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Diffstat (limited to 'libxml2-2.9.10/parser.c')
| -rw-r--r-- | libxml2-2.9.10/parser.c | 15605 |
1 files changed, 15605 insertions, 0 deletions
diff --git a/libxml2-2.9.10/parser.c b/libxml2-2.9.10/parser.c new file mode 100644 index 0000000..d1c3196 --- /dev/null +++ b/libxml2-2.9.10/parser.c @@ -0,0 +1,15605 @@ +/* + * parser.c : an XML 1.0 parser, namespaces and validity support are mostly + * implemented on top of the SAX interfaces + * + * References: + * The XML specification: + * http://www.w3.org/TR/REC-xml + * Original 1.0 version: + * http://www.w3.org/TR/1998/REC-xml-19980210 + * XML second edition working draft + * http://www.w3.org/TR/2000/WD-xml-2e-20000814 + * + * Okay this is a big file, the parser core is around 7000 lines, then it + * is followed by the progressive parser top routines, then the various + * high level APIs to call the parser and a few miscellaneous functions. + * A number of helper functions and deprecated ones have been moved to + * parserInternals.c to reduce this file size. + * As much as possible the functions are associated with their relative + * production in the XML specification. A few productions defining the + * different ranges of character are actually implanted either in + * parserInternals.h or parserInternals.c + * The DOM tree build is realized from the default SAX callbacks in + * the module SAX.c. + * The routines doing the validation checks are in valid.c and called either + * from the SAX callbacks or as standalone functions using a preparsed + * document. + * + * See Copyright for the status of this software. + * + * daniel@veillard.com + */ + +/* To avoid EBCDIC trouble when parsing on zOS */ +#if defined(__MVS__) +#pragma convert("ISO8859-1") +#endif + +#define IN_LIBXML +#include "libxml.h" + +#if defined(_WIN32) && !defined (__CYGWIN__) +#define XML_DIR_SEP '\\' +#else +#define XML_DIR_SEP '/' +#endif + +#include <stdlib.h> +#include <limits.h> +#include <string.h> +#include <stdarg.h> +#include <stddef.h> +#include <libxml/xmlmemory.h> +#include <libxml/threads.h> +#include <libxml/globals.h> +#include <libxml/tree.h> +#include <libxml/parser.h> +#include <libxml/parserInternals.h> +#include <libxml/valid.h> +#include <libxml/entities.h> +#include <libxml/xmlerror.h> +#include <libxml/encoding.h> +#include <libxml/xmlIO.h> +#include <libxml/uri.h> +#ifdef LIBXML_CATALOG_ENABLED +#include <libxml/catalog.h> +#endif +#ifdef LIBXML_SCHEMAS_ENABLED +#include <libxml/xmlschemastypes.h> +#include <libxml/relaxng.h> +#endif +#ifdef HAVE_CTYPE_H +#include <ctype.h> +#endif +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif +#ifdef HAVE_SYS_STAT_H +#include <sys/stat.h> +#endif +#ifdef HAVE_FCNTL_H +#include <fcntl.h> +#endif +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +#include "buf.h" +#include "enc.h" + +static void +xmlFatalErr(xmlParserCtxtPtr ctxt, xmlParserErrors error, const char *info); + +static xmlParserCtxtPtr +xmlCreateEntityParserCtxtInternal(const xmlChar *URL, const xmlChar *ID, + const xmlChar *base, xmlParserCtxtPtr pctx); + +static void xmlHaltParser(xmlParserCtxtPtr ctxt); + +static int +xmlParseElementStart(xmlParserCtxtPtr ctxt); + +static void +xmlParseElementEnd(xmlParserCtxtPtr ctxt); + +/************************************************************************ + * * + * Arbitrary limits set in the parser. See XML_PARSE_HUGE * + * * + ************************************************************************/ + +#define XML_PARSER_BIG_ENTITY 1000 +#define XML_PARSER_LOT_ENTITY 5000 + +/* + * XML_PARSER_NON_LINEAR is the threshold where the ratio of parsed entity + * replacement over the size in byte of the input indicates that you have + * and exponential behaviour. A value of 10 correspond to at least 3 entity + * replacement per byte of input. + */ +#define XML_PARSER_NON_LINEAR 10 + +/* + * xmlParserEntityCheck + * + * Function to check non-linear entity expansion behaviour + * This is here to detect and stop exponential linear entity expansion + * This is not a limitation of the parser but a safety + * boundary feature. It can be disabled with the XML_PARSE_HUGE + * parser option. + */ +static int +xmlParserEntityCheck(xmlParserCtxtPtr ctxt, size_t size, + xmlEntityPtr ent, size_t replacement) +{ + size_t consumed = 0; + + if ((ctxt == NULL) || (ctxt->options & XML_PARSE_HUGE)) + return (0); + if (ctxt->lastError.code == XML_ERR_ENTITY_LOOP) + return (1); + + /* + * This may look absurd but is needed to detect + * entities problems + */ + if ((ent != NULL) && (ent->etype != XML_INTERNAL_PREDEFINED_ENTITY) && + (ent->content != NULL) && (ent->checked == 0) && + (ctxt->errNo != XML_ERR_ENTITY_LOOP)) { + unsigned long oldnbent = ctxt->nbentities, diff; + xmlChar *rep; + + ent->checked = 1; + + ++ctxt->depth; + rep = xmlStringDecodeEntities(ctxt, ent->content, + XML_SUBSTITUTE_REF, 0, 0, 0); + --ctxt->depth; + if ((rep == NULL) || (ctxt->errNo == XML_ERR_ENTITY_LOOP)) { + ent->content[0] = 0; + } + + diff = ctxt->nbentities - oldnbent + 1; + if (diff > INT_MAX / 2) + diff = INT_MAX / 2; + ent->checked = diff * 2; + if (rep != NULL) { + if (xmlStrchr(rep, '<')) + ent->checked |= 1; + xmlFree(rep); + rep = NULL; + } + } + if (replacement != 0) { + if (replacement < XML_MAX_TEXT_LENGTH) + return(0); + + /* + * If the volume of entity copy reaches 10 times the + * amount of parsed data and over the large text threshold + * then that's very likely to be an abuse. + */ + if (ctxt->input != NULL) { + consumed = ctxt->input->consumed + + (ctxt->input->cur - ctxt->input->base); + } + consumed += ctxt->sizeentities; + + if (replacement < XML_PARSER_NON_LINEAR * consumed) + return(0); + } else if (size != 0) { + /* + * Do the check based on the replacement size of the entity + */ + if (size < XML_PARSER_BIG_ENTITY) + return(0); + + /* + * A limit on the amount of text data reasonably used + */ + if (ctxt->input != NULL) { + consumed = ctxt->input->consumed + + (ctxt->input->cur - ctxt->input->base); + } + consumed += ctxt->sizeentities; + + if ((size < XML_PARSER_NON_LINEAR * consumed) && + (ctxt->nbentities * 3 < XML_PARSER_NON_LINEAR * consumed)) + return (0); + } else if (ent != NULL) { + /* + * use the number of parsed entities in the replacement + */ + size = ent->checked / 2; + + /* + * The amount of data parsed counting entities size only once + */ + if (ctxt->input != NULL) { + consumed = ctxt->input->consumed + + (ctxt->input->cur - ctxt->input->base); + } + consumed += ctxt->sizeentities; + + /* + * Check the density of entities for the amount of data + * knowing an entity reference will take at least 3 bytes + */ + if (size * 3 < consumed * XML_PARSER_NON_LINEAR) + return (0); + } else { + /* + * strange we got no data for checking + */ + if (((ctxt->lastError.code != XML_ERR_UNDECLARED_ENTITY) && + (ctxt->lastError.code != XML_WAR_UNDECLARED_ENTITY)) || + (ctxt->nbentities <= 10000)) + return (0); + } + xmlFatalErr(ctxt, XML_ERR_ENTITY_LOOP, NULL); + return (1); +} + +/** + * xmlParserMaxDepth: + * + * arbitrary depth limit for the XML documents that we allow to + * process. This is not a limitation of the parser but a safety + * boundary feature. It can be disabled with the XML_PARSE_HUGE + * parser option. + */ +unsigned int xmlParserMaxDepth = 256; + + + +#define SAX2 1 +#define XML_PARSER_BIG_BUFFER_SIZE 300 +#define XML_PARSER_BUFFER_SIZE 100 +#define SAX_COMPAT_MODE BAD_CAST "SAX compatibility mode document" + +/** + * XML_PARSER_CHUNK_SIZE + * + * When calling GROW that's the minimal amount of data + * the parser expected to have received. It is not a hard + * limit but an optimization when reading strings like Names + * It is not strictly needed as long as inputs available characters + * are followed by 0, which should be provided by the I/O level + */ +#define XML_PARSER_CHUNK_SIZE 100 + +/* + * List of XML prefixed PI allowed by W3C specs + */ + +static const char *xmlW3CPIs[] = { + "xml-stylesheet", + "xml-model", + NULL +}; + + +/* DEPR void xmlParserHandleReference(xmlParserCtxtPtr ctxt); */ +static xmlEntityPtr xmlParseStringPEReference(xmlParserCtxtPtr ctxt, + const xmlChar **str); + +static xmlParserErrors +xmlParseExternalEntityPrivate(xmlDocPtr doc, xmlParserCtxtPtr oldctxt, + xmlSAXHandlerPtr sax, + void *user_data, int depth, const xmlChar *URL, + const xmlChar *ID, xmlNodePtr *list); + +static int +xmlCtxtUseOptionsInternal(xmlParserCtxtPtr ctxt, int options, + const char *encoding); +#ifdef LIBXML_LEGACY_ENABLED +static void +xmlAddEntityReference(xmlEntityPtr ent, xmlNodePtr firstNode, + xmlNodePtr lastNode); +#endif /* LIBXML_LEGACY_ENABLED */ + +static xmlParserErrors +xmlParseBalancedChunkMemoryInternal(xmlParserCtxtPtr oldctxt, + const xmlChar *string, void *user_data, xmlNodePtr *lst); + +static int +xmlLoadEntityContent(xmlParserCtxtPtr ctxt, xmlEntityPtr entity); + +/************************************************************************ + * * + * Some factorized error routines * + * * + ************************************************************************/ + +/** + * xmlErrAttributeDup: + * @ctxt: an XML parser context + * @prefix: the attribute prefix + * @localname: the attribute localname + * + * Handle a redefinition of attribute error + */ +static void +xmlErrAttributeDup(xmlParserCtxtPtr ctxt, const xmlChar * prefix, + const xmlChar * localname) +{ + if ((ctxt != NULL) && (ctxt->disableSAX != 0) && + (ctxt->instate == XML_PARSER_EOF)) + return; + if (ctxt != NULL) + ctxt->errNo = XML_ERR_ATTRIBUTE_REDEFINED; + + if (prefix == NULL) + __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER, + XML_ERR_ATTRIBUTE_REDEFINED, XML_ERR_FATAL, NULL, 0, + (const char *) localname, NULL, NULL, 0, 0, + "Attribute %s redefined\n", localname); + else + __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER, + XML_ERR_ATTRIBUTE_REDEFINED, XML_ERR_FATAL, NULL, 0, + (const char *) prefix, (const char *) localname, + NULL, 0, 0, "Attribute %s:%s redefined\n", prefix, + localname); + if (ctxt != NULL) { + ctxt->wellFormed = 0; + if (ctxt->recovery == 0) + ctxt->disableSAX = 1; + } +} + +/** + * xmlFatalErr: + * @ctxt: an XML parser context + * @error: the error number + * @extra: extra information string + * + * Handle a fatal parser error, i.e. violating Well-Formedness constraints + */ +static void +xmlFatalErr(xmlParserCtxtPtr ctxt, xmlParserErrors error, const char *info) +{ + const char *errmsg; + + if ((ctxt != NULL) && (ctxt->disableSAX != 0) && + (ctxt->instate == XML_PARSER_EOF)) + return; + switch (error) { + case XML_ERR_INVALID_HEX_CHARREF: + errmsg = "CharRef: invalid hexadecimal value"; + break; + case XML_ERR_INVALID_DEC_CHARREF: + errmsg = "CharRef: invalid decimal value"; + break; + case XML_ERR_INVALID_CHARREF: + errmsg = "CharRef: invalid value"; + break; + case XML_ERR_INTERNAL_ERROR: + errmsg = "internal error"; + break; + case XML_ERR_PEREF_AT_EOF: + errmsg = "PEReference at end of document"; + break; + case XML_ERR_PEREF_IN_PROLOG: + errmsg = "PEReference in prolog"; + break; + case XML_ERR_PEREF_IN_EPILOG: + errmsg = "PEReference in epilog"; + break; + case XML_ERR_PEREF_NO_NAME: + errmsg = "PEReference: no name"; + break; + case XML_ERR_PEREF_SEMICOL_MISSING: + errmsg = "PEReference: expecting ';'"; + break; + case XML_ERR_ENTITY_LOOP: + errmsg = "Detected an entity reference loop"; + break; + case XML_ERR_ENTITY_NOT_STARTED: + errmsg = "EntityValue: \" or ' expected"; + break; + case XML_ERR_ENTITY_PE_INTERNAL: + errmsg = "PEReferences forbidden in internal subset"; + break; + case XML_ERR_ENTITY_NOT_FINISHED: + errmsg = "EntityValue: \" or ' expected"; + break; + case XML_ERR_ATTRIBUTE_NOT_STARTED: + errmsg = "AttValue: \" or ' expected"; + break; + case XML_ERR_LT_IN_ATTRIBUTE: + errmsg = "Unescaped '<' not allowed in attributes values"; + break; + case XML_ERR_LITERAL_NOT_STARTED: + errmsg = "SystemLiteral \" or ' expected"; + break; + case XML_ERR_LITERAL_NOT_FINISHED: + errmsg = "Unfinished System or Public ID \" or ' expected"; + break; + case XML_ERR_MISPLACED_CDATA_END: + errmsg = "Sequence ']]>' not allowed in content"; + break; + case XML_ERR_URI_REQUIRED: + errmsg = "SYSTEM or PUBLIC, the URI is missing"; + break; + case XML_ERR_PUBID_REQUIRED: + errmsg = "PUBLIC, the Public Identifier is missing"; + break; + case XML_ERR_HYPHEN_IN_COMMENT: + errmsg = "Comment must not contain '--' (double-hyphen)"; + break; + case XML_ERR_PI_NOT_STARTED: + errmsg = "xmlParsePI : no target name"; + break; + case XML_ERR_RESERVED_XML_NAME: + errmsg = "Invalid PI name"; + break; + case XML_ERR_NOTATION_NOT_STARTED: + errmsg = "NOTATION: Name expected here"; + break; + case XML_ERR_NOTATION_NOT_FINISHED: + errmsg = "'>' required to close NOTATION declaration"; + break; + case XML_ERR_VALUE_REQUIRED: + errmsg = "Entity value required"; + break; + case XML_ERR_URI_FRAGMENT: + errmsg = "Fragment not allowed"; + break; + case XML_ERR_ATTLIST_NOT_STARTED: + errmsg = "'(' required to start ATTLIST enumeration"; + break; + case XML_ERR_NMTOKEN_REQUIRED: + errmsg = "NmToken expected in ATTLIST enumeration"; + break; + case XML_ERR_ATTLIST_NOT_FINISHED: + errmsg = "')' required to finish ATTLIST enumeration"; + break; + case XML_ERR_MIXED_NOT_STARTED: + errmsg = "MixedContentDecl : '|' or ')*' expected"; + break; + case XML_ERR_PCDATA_REQUIRED: + errmsg = "MixedContentDecl : '#PCDATA' expected"; + break; + case XML_ERR_ELEMCONTENT_NOT_STARTED: + errmsg = "ContentDecl : Name or '(' expected"; + break; + case XML_ERR_ELEMCONTENT_NOT_FINISHED: + errmsg = "ContentDecl : ',' '|' or ')' expected"; + break; + case XML_ERR_PEREF_IN_INT_SUBSET: + errmsg = + "PEReference: forbidden within markup decl in internal subset"; + break; + case XML_ERR_GT_REQUIRED: + errmsg = "expected '>'"; + break; + case XML_ERR_CONDSEC_INVALID: + errmsg = "XML conditional section '[' expected"; + break; + case XML_ERR_EXT_SUBSET_NOT_FINISHED: + errmsg = "Content error in the external subset"; + break; + case XML_ERR_CONDSEC_INVALID_KEYWORD: + errmsg = + "conditional section INCLUDE or IGNORE keyword expected"; + break; + case XML_ERR_CONDSEC_NOT_FINISHED: + errmsg = "XML conditional section not closed"; + break; + case XML_ERR_XMLDECL_NOT_STARTED: + errmsg = "Text declaration '<?xml' required"; + break; + case XML_ERR_XMLDECL_NOT_FINISHED: + errmsg = "parsing XML declaration: '?>' expected"; + break; + case XML_ERR_EXT_ENTITY_STANDALONE: + errmsg = "external parsed entities cannot be standalone"; + break; + case XML_ERR_ENTITYREF_SEMICOL_MISSING: + errmsg = "EntityRef: expecting ';'"; + break; + case XML_ERR_DOCTYPE_NOT_FINISHED: + errmsg = "DOCTYPE improperly terminated"; + break; + case XML_ERR_LTSLASH_REQUIRED: + errmsg = "EndTag: '</' not found"; + break; + case XML_ERR_EQUAL_REQUIRED: + errmsg = "expected '='"; + break; + case XML_ERR_STRING_NOT_CLOSED: + errmsg = "String not closed expecting \" or '"; + break; + case XML_ERR_STRING_NOT_STARTED: + errmsg = "String not started expecting ' or \""; + break; + case XML_ERR_ENCODING_NAME: + errmsg = "Invalid XML encoding name"; + break; + case XML_ERR_STANDALONE_VALUE: + errmsg = "standalone accepts only 'yes' or 'no'"; + break; + case XML_ERR_DOCUMENT_EMPTY: + errmsg = "Document is empty"; + break; + case XML_ERR_DOCUMENT_END: + errmsg = "Extra content at the end of the document"; + break; + case XML_ERR_NOT_WELL_BALANCED: + errmsg = "chunk is not well balanced"; + break; + case XML_ERR_EXTRA_CONTENT: + errmsg = "extra content at the end of well balanced chunk"; + break; + case XML_ERR_VERSION_MISSING: + errmsg = "Malformed declaration expecting version"; + break; + case XML_ERR_NAME_TOO_LONG: + errmsg = "Name too long use XML_PARSE_HUGE option"; + break; +#if 0 + case: + errmsg = ""; + break; +#endif + default: + errmsg = "Unregistered error message"; + } + if (ctxt != NULL) + ctxt->errNo = error; + if (info == NULL) { + __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER, error, + XML_ERR_FATAL, NULL, 0, info, NULL, NULL, 0, 0, "%s\n", + errmsg); + } else { + __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER, error, + XML_ERR_FATAL, NULL, 0, info, NULL, NULL, 0, 0, "%s: %s\n", + errmsg, info); + } + if (ctxt != NULL) { + ctxt->wellFormed = 0; + if (ctxt->recovery == 0) + ctxt->disableSAX = 1; + } +} + +/** + * xmlFatalErrMsg: + * @ctxt: an XML parser context + * @error: the error number + * @msg: the error message + * + * Handle a fatal parser error, i.e. violating Well-Formedness constraints + */ +static void LIBXML_ATTR_FORMAT(3,0) +xmlFatalErrMsg(xmlParserCtxtPtr ctxt, xmlParserErrors error, + const char *msg) +{ + if ((ctxt != NULL) && (ctxt->disableSAX != 0) && + (ctxt->instate == XML_PARSER_EOF)) + return; + if (ctxt != NULL) + ctxt->errNo = error; + __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER, error, + XML_ERR_FATAL, NULL, 0, NULL, NULL, NULL, 0, 0, "%s", msg); + if (ctxt != NULL) { + ctxt->wellFormed = 0; + if (ctxt->recovery == 0) + ctxt->disableSAX = 1; + } +} + +/** + * xmlWarningMsg: + * @ctxt: an XML parser context + * @error: the error number + * @msg: the error message + * @str1: extra data + * @str2: extra data + * + * Handle a warning. + */ +static void LIBXML_ATTR_FORMAT(3,0) +xmlWarningMsg(xmlParserCtxtPtr ctxt, xmlParserErrors error, + const char *msg, const xmlChar *str1, const xmlChar *str2) +{ + xmlStructuredErrorFunc schannel = NULL; + + if ((ctxt != NULL) && (ctxt->disableSAX != 0) && + (ctxt->instate == XML_PARSER_EOF)) + return; + if ((ctxt != NULL) && (ctxt->sax != NULL) && + (ctxt->sax->initialized == XML_SAX2_MAGIC)) + schannel = ctxt->sax->serror; + if (ctxt != NULL) { + __xmlRaiseError(schannel, + (ctxt->sax) ? ctxt->sax->warning : NULL, + ctxt->userData, + ctxt, NULL, XML_FROM_PARSER, error, + XML_ERR_WARNING, NULL, 0, + (const char *) str1, (const char *) str2, NULL, 0, 0, + msg, (const char *) str1, (const char *) str2); + } else { + __xmlRaiseError(schannel, NULL, NULL, + ctxt, NULL, XML_FROM_PARSER, error, + XML_ERR_WARNING, NULL, 0, + (const char *) str1, (const char *) str2, NULL, 0, 0, + msg, (const char *) str1, (const char *) str2); + } +} + +/** + * xmlValidityError: + * @ctxt: an XML parser context + * @error: the error number + * @msg: the error message + * @str1: extra data + * + * Handle a validity error. + */ +static void LIBXML_ATTR_FORMAT(3,0) +xmlValidityError(xmlParserCtxtPtr ctxt, xmlParserErrors error, + const char *msg, const xmlChar *str1, const xmlChar *str2) +{ + xmlStructuredErrorFunc schannel = NULL; + + if ((ctxt != NULL) && (ctxt->disableSAX != 0) && + (ctxt->instate == XML_PARSER_EOF)) + return; + if (ctxt != NULL) { + ctxt->errNo = error; + if ((ctxt->sax != NULL) && (ctxt->sax->initialized == XML_SAX2_MAGIC)) + schannel = ctxt->sax->serror; + } + if (ctxt != NULL) { + __xmlRaiseError(schannel, + ctxt->vctxt.error, ctxt->vctxt.userData, + ctxt, NULL, XML_FROM_DTD, error, + XML_ERR_ERROR, NULL, 0, (const char *) str1, + (const char *) str2, NULL, 0, 0, + msg, (const char *) str1, (const char *) str2); + ctxt->valid = 0; + } else { + __xmlRaiseError(schannel, NULL, NULL, + ctxt, NULL, XML_FROM_DTD, error, + XML_ERR_ERROR, NULL, 0, (const char *) str1, + (const char *) str2, NULL, 0, 0, + msg, (const char *) str1, (const char *) str2); + } +} + +/** + * xmlFatalErrMsgInt: + * @ctxt: an XML parser context + * @error: the error number + * @msg: the error message + * @val: an integer value + * + * Handle a fatal parser error, i.e. violating Well-Formedness constraints + */ +static void LIBXML_ATTR_FORMAT(3,0) +xmlFatalErrMsgInt(xmlParserCtxtPtr ctxt, xmlParserErrors error, + const char *msg, int val) +{ + if ((ctxt != NULL) && (ctxt->disableSAX != 0) && + (ctxt->instate == XML_PARSER_EOF)) + return; + if (ctxt != NULL) + ctxt->errNo = error; + __xmlRaiseError(NULL, NULL, NULL, + ctxt, NULL, XML_FROM_PARSER, error, XML_ERR_FATAL, + NULL, 0, NULL, NULL, NULL, val, 0, msg, val); + if (ctxt != NULL) { + ctxt->wellFormed = 0; + if (ctxt->recovery == 0) + ctxt->disableSAX = 1; + } +} + +/** + * xmlFatalErrMsgStrIntStr: + * @ctxt: an XML parser context + * @error: the error number + * @msg: the error message + * @str1: an string info + * @val: an integer value + * @str2: an string info + * + * Handle a fatal parser error, i.e. violating Well-Formedness constraints + */ +static void LIBXML_ATTR_FORMAT(3,0) +xmlFatalErrMsgStrIntStr(xmlParserCtxtPtr ctxt, xmlParserErrors error, + const char *msg, const xmlChar *str1, int val, + const xmlChar *str2) +{ + if ((ctxt != NULL) && (ctxt->disableSAX != 0) && + (ctxt->instate == XML_PARSER_EOF)) + return; + if (ctxt != NULL) + ctxt->errNo = error; + __xmlRaiseError(NULL, NULL, NULL, + ctxt, NULL, XML_FROM_PARSER, error, XML_ERR_FATAL, + NULL, 0, (const char *) str1, (const char *) str2, + NULL, val, 0, msg, str1, val, str2); + if (ctxt != NULL) { + ctxt->wellFormed = 0; + if (ctxt->recovery == 0) + ctxt->disableSAX = 1; + } +} + +/** + * xmlFatalErrMsgStr: + * @ctxt: an XML parser context + * @error: the error number + * @msg: the error message + * @val: a string value + * + * Handle a fatal parser error, i.e. violating Well-Formedness constraints + */ +static void LIBXML_ATTR_FORMAT(3,0) +xmlFatalErrMsgStr(xmlParserCtxtPtr ctxt, xmlParserErrors error, + const char *msg, const xmlChar * val) +{ + if ((ctxt != NULL) && (ctxt->disableSAX != 0) && + (ctxt->instate == XML_PARSER_EOF)) + return; + if (ctxt != NULL) + ctxt->errNo = error; + __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, + XML_FROM_PARSER, error, XML_ERR_FATAL, + NULL, 0, (const char *) val, NULL, NULL, 0, 0, msg, + val); + if (ctxt != NULL) { + ctxt->wellFormed = 0; + if (ctxt->recovery == 0) + ctxt->disableSAX = 1; + } +} + +/** + * xmlErrMsgStr: + * @ctxt: an XML parser context + * @error: the error number + * @msg: the error message + * @val: a string value + * + * Handle a non fatal parser error + */ +static void LIBXML_ATTR_FORMAT(3,0) +xmlErrMsgStr(xmlParserCtxtPtr ctxt, xmlParserErrors error, + const char *msg, const xmlChar * val) +{ + if ((ctxt != NULL) && (ctxt->disableSAX != 0) && + (ctxt->instate == XML_PARSER_EOF)) + return; + if (ctxt != NULL) + ctxt->errNo = error; + __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, + XML_FROM_PARSER, error, XML_ERR_ERROR, + NULL, 0, (const char *) val, NULL, NULL, 0, 0, msg, + val); +} + +/** + * xmlNsErr: + * @ctxt: an XML parser context + * @error: the error number + * @msg: the message + * @info1: extra information string + * @info2: extra information string + * + * Handle a fatal parser error, i.e. violating Well-Formedness constraints + */ +static void LIBXML_ATTR_FORMAT(3,0) +xmlNsErr(xmlParserCtxtPtr ctxt, xmlParserErrors error, + const char *msg, + const xmlChar * info1, const xmlChar * info2, + const xmlChar * info3) +{ + if ((ctxt != NULL) && (ctxt->disableSAX != 0) && + (ctxt->instate == XML_PARSER_EOF)) + return; + if (ctxt != NULL) + ctxt->errNo = error; + __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_NAMESPACE, error, + XML_ERR_ERROR, NULL, 0, (const char *) info1, + (const char *) info2, (const char *) info3, 0, 0, msg, + info1, info2, info3); + if (ctxt != NULL) + ctxt->nsWellFormed = 0; +} + +/** + * xmlNsWarn + * @ctxt: an XML parser context + * @error: the error number + * @msg: the message + * @info1: extra information string + * @info2: extra information string + * + * Handle a namespace warning error + */ +static void LIBXML_ATTR_FORMAT(3,0) +xmlNsWarn(xmlParserCtxtPtr ctxt, xmlParserErrors error, + const char *msg, + const xmlChar * info1, const xmlChar * info2, + const xmlChar * info3) +{ + if ((ctxt != NULL) && (ctxt->disableSAX != 0) && + (ctxt->instate == XML_PARSER_EOF)) + return; + __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_NAMESPACE, error, + XML_ERR_WARNING, NULL, 0, (const char *) info1, + (const char *) info2, (const char *) info3, 0, 0, msg, + info1, info2, info3); +} + +/************************************************************************ + * * + * Library wide options * + * * + ************************************************************************/ + +/** + * xmlHasFeature: + * @feature: the feature to be examined + * + * Examines if the library has been compiled with a given feature. + * + * Returns a non-zero value if the feature exist, otherwise zero. + * Returns zero (0) if the feature does not exist or an unknown + * unknown feature is requested, non-zero otherwise. + */ +int +xmlHasFeature(xmlFeature feature) +{ + switch (feature) { + case XML_WITH_THREAD: +#ifdef LIBXML_THREAD_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_TREE: +#ifdef LIBXML_TREE_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_OUTPUT: +#ifdef LIBXML_OUTPUT_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_PUSH: +#ifdef LIBXML_PUSH_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_READER: +#ifdef LIBXML_READER_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_PATTERN: +#ifdef LIBXML_PATTERN_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_WRITER: +#ifdef LIBXML_WRITER_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_SAX1: +#ifdef LIBXML_SAX1_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_FTP: +#ifdef LIBXML_FTP_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_HTTP: +#ifdef LIBXML_HTTP_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_VALID: +#ifdef LIBXML_VALID_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_HTML: +#ifdef LIBXML_HTML_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_LEGACY: +#ifdef LIBXML_LEGACY_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_C14N: +#ifdef LIBXML_C14N_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_CATALOG: +#ifdef LIBXML_CATALOG_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_XPATH: +#ifdef LIBXML_XPATH_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_XPTR: +#ifdef LIBXML_XPTR_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_XINCLUDE: +#ifdef LIBXML_XINCLUDE_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_ICONV: +#ifdef LIBXML_ICONV_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_ISO8859X: +#ifdef LIBXML_ISO8859X_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_UNICODE: +#ifdef LIBXML_UNICODE_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_REGEXP: +#ifdef LIBXML_REGEXP_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_AUTOMATA: +#ifdef LIBXML_AUTOMATA_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_EXPR: +#ifdef LIBXML_EXPR_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_SCHEMAS: +#ifdef LIBXML_SCHEMAS_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_SCHEMATRON: +#ifdef LIBXML_SCHEMATRON_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_MODULES: +#ifdef LIBXML_MODULES_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_DEBUG: +#ifdef LIBXML_DEBUG_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_DEBUG_MEM: +#ifdef DEBUG_MEMORY_LOCATION + return(1); +#else + return(0); +#endif + case XML_WITH_DEBUG_RUN: +#ifdef LIBXML_DEBUG_RUNTIME + return(1); +#else + return(0); +#endif + case XML_WITH_ZLIB: +#ifdef LIBXML_ZLIB_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_LZMA: +#ifdef LIBXML_LZMA_ENABLED + return(1); +#else + return(0); +#endif + case XML_WITH_ICU: +#ifdef LIBXML_ICU_ENABLED + return(1); +#else + return(0); +#endif + default: + break; + } + return(0); +} + +/************************************************************************ + * * + * SAX2 defaulted attributes handling * + * * + ************************************************************************/ + +/** + * xmlDetectSAX2: + * @ctxt: an XML parser context + * + * Do the SAX2 detection and specific initialization + */ +static void +xmlDetectSAX2(xmlParserCtxtPtr ctxt) { + if (ctxt == NULL) return; +#ifdef LIBXML_SAX1_ENABLED + if ((ctxt->sax) && (ctxt->sax->initialized == XML_SAX2_MAGIC) && + ((ctxt->sax->startElementNs != NULL) || + (ctxt->sax->endElementNs != NULL))) ctxt->sax2 = 1; +#else + ctxt->sax2 = 1; +#endif /* LIBXML_SAX1_ENABLED */ + + ctxt->str_xml = xmlDictLookup(ctxt->dict, BAD_CAST "xml", 3); + ctxt->str_xmlns = xmlDictLookup(ctxt->dict, BAD_CAST "xmlns", 5); + ctxt->str_xml_ns = xmlDictLookup(ctxt->dict, XML_XML_NAMESPACE, 36); + if ((ctxt->str_xml==NULL) || (ctxt->str_xmlns==NULL) || + (ctxt->str_xml_ns == NULL)) { + xmlErrMemory(ctxt, NULL); + } +} + +typedef struct _xmlDefAttrs xmlDefAttrs; +typedef xmlDefAttrs *xmlDefAttrsPtr; +struct _xmlDefAttrs { + int nbAttrs; /* number of defaulted attributes on that element */ + int maxAttrs; /* the size of the array */ +#if __STDC_VERSION__ >= 199901L + /* Using a C99 flexible array member avoids UBSan errors. */ + const xmlChar *values[]; /* array of localname/prefix/values/external */ +#else + const xmlChar *values[5]; +#endif +}; + +/** + * xmlAttrNormalizeSpace: + * @src: the source string + * @dst: the target string + * + * Normalize the space in non CDATA attribute values: + * If the attribute type is not CDATA, then the XML processor MUST further + * process the normalized attribute value by discarding any leading and + * trailing space (#x20) characters, and by replacing sequences of space + * (#x20) characters by a single space (#x20) character. + * Note that the size of dst need to be at least src, and if one doesn't need + * to preserve dst (and it doesn't come from a dictionary or read-only) then + * passing src as dst is just fine. + * + * Returns a pointer to the normalized value (dst) or NULL if no conversion + * is needed. + */ +static xmlChar * +xmlAttrNormalizeSpace(const xmlChar *src, xmlChar *dst) +{ + if ((src == NULL) || (dst == NULL)) + return(NULL); + + while (*src == 0x20) src++; + while (*src != 0) { + if (*src == 0x20) { + while (*src == 0x20) src++; + if (*src != 0) + *dst++ = 0x20; + } else { + *dst++ = *src++; + } + } + *dst = 0; + if (dst == src) + return(NULL); + return(dst); +} + +/** + * xmlAttrNormalizeSpace2: + * @src: the source string + * + * Normalize the space in non CDATA attribute values, a slightly more complex + * front end to avoid allocation problems when running on attribute values + * coming from the input. + * + * Returns a pointer to the normalized value (dst) or NULL if no conversion + * is needed. + */ +static const xmlChar * +xmlAttrNormalizeSpace2(xmlParserCtxtPtr ctxt, xmlChar *src, int *len) +{ + int i; + int remove_head = 0; + int need_realloc = 0; + const xmlChar *cur; + + if ((ctxt == NULL) || (src == NULL) || (len == NULL)) + return(NULL); + i = *len; + if (i <= 0) + return(NULL); + + cur = src; + while (*cur == 0x20) { + cur++; + remove_head++; + } + while (*cur != 0) { + if (*cur == 0x20) { + cur++; + if ((*cur == 0x20) || (*cur == 0)) { + need_realloc = 1; + break; + } + } else + cur++; + } + if (need_realloc) { + xmlChar *ret; + + ret = xmlStrndup(src + remove_head, i - remove_head + 1); + if (ret == NULL) { + xmlErrMemory(ctxt, NULL); + return(NULL); + } + xmlAttrNormalizeSpace(ret, ret); + *len = (int) strlen((const char *)ret); + return(ret); + } else if (remove_head) { + *len -= remove_head; + memmove(src, src + remove_head, 1 + *len); + return(src); + } + return(NULL); +} + +/** + * xmlAddDefAttrs: + * @ctxt: an XML parser context + * @fullname: the element fullname + * @fullattr: the attribute fullname + * @value: the attribute value + * + * Add a defaulted attribute for an element + */ +static void +xmlAddDefAttrs(xmlParserCtxtPtr ctxt, + const xmlChar *fullname, + const xmlChar *fullattr, + const xmlChar *value) { + xmlDefAttrsPtr defaults; + int len; + const xmlChar *name; + const xmlChar *prefix; + + /* + * Allows to detect attribute redefinitions + */ + if (ctxt->attsSpecial != NULL) { + if (xmlHashLookup2(ctxt->attsSpecial, fullname, fullattr) != NULL) + return; + } + + if (ctxt->attsDefault == NULL) { + ctxt->attsDefault = xmlHashCreateDict(10, ctxt->dict); + if (ctxt->attsDefault == NULL) + goto mem_error; + } + + /* + * split the element name into prefix:localname , the string found + * are within the DTD and then not associated to namespace names. + */ + name = xmlSplitQName3(fullname, &len); + if (name == NULL) { + name = xmlDictLookup(ctxt->dict, fullname, -1); + prefix = NULL; + } else { + name = xmlDictLookup(ctxt->dict, name, -1); + prefix = xmlDictLookup(ctxt->dict, fullname, len); + } + + /* + * make sure there is some storage + */ + defaults = xmlHashLookup2(ctxt->attsDefault, name, prefix); + if (defaults == NULL) { + defaults = (xmlDefAttrsPtr) xmlMalloc(sizeof(xmlDefAttrs) + + (4 * 5) * sizeof(const xmlChar *)); + if (defaults == NULL) + goto mem_error; + defaults->nbAttrs = 0; + defaults->maxAttrs = 4; + if (xmlHashUpdateEntry2(ctxt->attsDefault, name, prefix, + defaults, NULL) < 0) { + xmlFree(defaults); + goto mem_error; + } + } else if (defaults->nbAttrs >= defaults->maxAttrs) { + xmlDefAttrsPtr temp; + + temp = (xmlDefAttrsPtr) xmlRealloc(defaults, sizeof(xmlDefAttrs) + + (2 * defaults->maxAttrs * 5) * sizeof(const xmlChar *)); + if (temp == NULL) + goto mem_error; + defaults = temp; + defaults->maxAttrs *= 2; + if (xmlHashUpdateEntry2(ctxt->attsDefault, name, prefix, + defaults, NULL) < 0) { + xmlFree(defaults); + goto mem_error; + } + } + + /* + * Split the element name into prefix:localname , the string found + * are within the DTD and hen not associated to namespace names. + */ + name = xmlSplitQName3(fullattr, &len); + if (name == NULL) { + name = xmlDictLookup(ctxt->dict, fullattr, -1); + prefix = NULL; + } else { + name = xmlDictLookup(ctxt->dict, name, -1); + prefix = xmlDictLookup(ctxt->dict, fullattr, len); + } + + defaults->values[5 * defaults->nbAttrs] = name; + defaults->values[5 * defaults->nbAttrs + 1] = prefix; + /* intern the string and precompute the end */ + len = xmlStrlen(value); + value = xmlDictLookup(ctxt->dict, value, len); + defaults->values[5 * defaults->nbAttrs + 2] = value; + defaults->values[5 * defaults->nbAttrs + 3] = value + len; + if (ctxt->external) + defaults->values[5 * defaults->nbAttrs + 4] = BAD_CAST "external"; + else + defaults->values[5 * defaults->nbAttrs + 4] = NULL; + defaults->nbAttrs++; + + return; + +mem_error: + xmlErrMemory(ctxt, NULL); + return; +} + +/** + * xmlAddSpecialAttr: + * @ctxt: an XML parser context + * @fullname: the element fullname + * @fullattr: the attribute fullname + * @type: the attribute type + * + * Register this attribute type + */ +static void +xmlAddSpecialAttr(xmlParserCtxtPtr ctxt, + const xmlChar *fullname, + const xmlChar *fullattr, + int type) +{ + if (ctxt->attsSpecial == NULL) { + ctxt->attsSpecial = xmlHashCreateDict(10, ctxt->dict); + if (ctxt->attsSpecial == NULL) + goto mem_error; + } + + if (xmlHashLookup2(ctxt->attsSpecial, fullname, fullattr) != NULL) + return; + + xmlHashAddEntry2(ctxt->attsSpecial, fullname, fullattr, + (void *) (ptrdiff_t) type); + return; + +mem_error: + xmlErrMemory(ctxt, NULL); + return; +} + +/** + * xmlCleanSpecialAttrCallback: + * + * Removes CDATA attributes from the special attribute table + */ +static void +xmlCleanSpecialAttrCallback(void *payload, void *data, + const xmlChar *fullname, const xmlChar *fullattr, + const xmlChar *unused ATTRIBUTE_UNUSED) { + xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) data; + + if (((ptrdiff_t) payload) == XML_ATTRIBUTE_CDATA) { + xmlHashRemoveEntry2(ctxt->attsSpecial, fullname, fullattr, NULL); + } +} + +/** + * xmlCleanSpecialAttr: + * @ctxt: an XML parser context + * + * Trim the list of attributes defined to remove all those of type + * CDATA as they are not special. This call should be done when finishing + * to parse the DTD and before starting to parse the document root. + */ +static void +xmlCleanSpecialAttr(xmlParserCtxtPtr ctxt) +{ + if (ctxt->attsSpecial == NULL) + return; + + xmlHashScanFull(ctxt->attsSpecial, xmlCleanSpecialAttrCallback, ctxt); + + if (xmlHashSize(ctxt->attsSpecial) == 0) { + xmlHashFree(ctxt->attsSpecial, NULL); + ctxt->attsSpecial = NULL; + } + return; +} + +/** + * xmlCheckLanguageID: + * @lang: pointer to the string value + * + * Checks that the value conforms to the LanguageID production: + * + * NOTE: this is somewhat deprecated, those productions were removed from + * the XML Second edition. + * + * [33] LanguageID ::= Langcode ('-' Subcode)* + * [34] Langcode ::= ISO639Code | IanaCode | UserCode + * [35] ISO639Code ::= ([a-z] | [A-Z]) ([a-z] | [A-Z]) + * [36] IanaCode ::= ('i' | 'I') '-' ([a-z] | [A-Z])+ + * [37] UserCode ::= ('x' | 'X') '-' ([a-z] | [A-Z])+ + * [38] Subcode ::= ([a-z] | [A-Z])+ + * + * The current REC reference the successors of RFC 1766, currently 5646 + * + * http://www.rfc-editor.org/rfc/rfc5646.txt + * langtag = language + * ["-" script] + * ["-" region] + * *("-" variant) + * *("-" extension) + * ["-" privateuse] + * language = 2*3ALPHA ; shortest ISO 639 code + * ["-" extlang] ; sometimes followed by + * ; extended language subtags + * / 4ALPHA ; or reserved for future use + * / 5*8ALPHA ; or registered language subtag + * + * extlang = 3ALPHA ; selected ISO 639 codes + * *2("-" 3ALPHA) ; permanently reserved + * + * script = 4ALPHA ; ISO 15924 code + * + * region = 2ALPHA ; ISO 3166-1 code + * / 3DIGIT ; UN M.49 code + * + * variant = 5*8alphanum ; registered variants + * / (DIGIT 3alphanum) + * + * extension = singleton 1*("-" (2*8alphanum)) + * + * ; Single alphanumerics + * ; "x" reserved for private use + * singleton = DIGIT ; 0 - 9 + * / %x41-57 ; A - W + * / %x59-5A ; Y - Z + * / %x61-77 ; a - w + * / %x79-7A ; y - z + * + * it sounds right to still allow Irregular i-xxx IANA and user codes too + * The parser below doesn't try to cope with extension or privateuse + * that could be added but that's not interoperable anyway + * + * Returns 1 if correct 0 otherwise + **/ +int +xmlCheckLanguageID(const xmlChar * lang) +{ + const xmlChar *cur = lang, *nxt; + + if (cur == NULL) + return (0); + if (((cur[0] == 'i') && (cur[1] == '-')) || + ((cur[0] == 'I') && (cur[1] == '-')) || + ((cur[0] == 'x') && (cur[1] == '-')) || + ((cur[0] == 'X') && (cur[1] == '-'))) { + /* + * Still allow IANA code and user code which were coming + * from the previous version of the XML-1.0 specification + * it's deprecated but we should not fail + */ + cur += 2; + while (((cur[0] >= 'A') && (cur[0] <= 'Z')) || + ((cur[0] >= 'a') && (cur[0] <= 'z'))) + cur++; + return(cur[0] == 0); + } + nxt = cur; + while (((nxt[0] >= 'A') && (nxt[0] <= 'Z')) || + ((nxt[0] >= 'a') && (nxt[0] <= 'z'))) + nxt++; + if (nxt - cur >= 4) { + /* + * Reserved + */ + if ((nxt - cur > 8) || (nxt[0] != 0)) + return(0); + return(1); + } + if (nxt - cur < 2) + return(0); + /* we got an ISO 639 code */ + if (nxt[0] == 0) + return(1); + if (nxt[0] != '-') + return(0); + + nxt++; + cur = nxt; + /* now we can have extlang or script or region or variant */ + if ((nxt[0] >= '0') && (nxt[0] <= '9')) + goto region_m49; + + while (((nxt[0] >= 'A') && (nxt[0] <= 'Z')) || + ((nxt[0] >= 'a') && (nxt[0] <= 'z'))) + nxt++; + if (nxt - cur == 4) + goto script; + if (nxt - cur == 2) + goto region; + if ((nxt - cur >= 5) && (nxt - cur <= 8)) + goto variant; + if (nxt - cur != 3) + return(0); + /* we parsed an extlang */ + if (nxt[0] == 0) + return(1); + if (nxt[0] != '-') + return(0); + + nxt++; + cur = nxt; + /* now we can have script or region or variant */ + if ((nxt[0] >= '0') && (nxt[0] <= '9')) + goto region_m49; + + while (((nxt[0] >= 'A') && (nxt[0] <= 'Z')) || + ((nxt[0] >= 'a') && (nxt[0] <= 'z'))) + nxt++; + if (nxt - cur == 2) + goto region; + if ((nxt - cur >= 5) && (nxt - cur <= 8)) + goto variant; + if (nxt - cur != 4) + return(0); + /* we parsed a script */ +script: + if (nxt[0] == 0) + return(1); + if (nxt[0] != '-') + return(0); + + nxt++; + cur = nxt; + /* now we can have region or variant */ + if ((nxt[0] >= '0') && (nxt[0] <= '9')) + goto region_m49; + + while (((nxt[0] >= 'A') && (nxt[0] <= 'Z')) || + ((nxt[0] >= 'a') && (nxt[0] <= 'z'))) + nxt++; + + if ((nxt - cur >= 5) && (nxt - cur <= 8)) + goto variant; + if (nxt - cur != 2) + return(0); + /* we parsed a region */ +region: + if (nxt[0] == 0) + return(1); + if (nxt[0] != '-') + return(0); + + nxt++; + cur = nxt; + /* now we can just have a variant */ + while (((nxt[0] >= 'A') && (nxt[0] <= 'Z')) || + ((nxt[0] >= 'a') && (nxt[0] <= 'z'))) + nxt++; + + if ((nxt - cur < 5) || (nxt - cur > 8)) + return(0); + + /* we parsed a variant */ +variant: + if (nxt[0] == 0) + return(1); + if (nxt[0] != '-') + return(0); + /* extensions and private use subtags not checked */ + return (1); + +region_m49: + if (((nxt[1] >= '0') && (nxt[1] <= '9')) && + ((nxt[2] >= '0') && (nxt[2] <= '9'))) { + nxt += 3; + goto region; + } + return(0); +} + +/************************************************************************ + * * + * Parser stacks related functions and macros * + * * + ************************************************************************/ + +static xmlEntityPtr xmlParseStringEntityRef(xmlParserCtxtPtr ctxt, + const xmlChar ** str); + +#ifdef SAX2 +/** + * nsPush: + * @ctxt: an XML parser context + * @prefix: the namespace prefix or NULL + * @URL: the namespace name + * + * Pushes a new parser namespace on top of the ns stack + * + * Returns -1 in case of error, -2 if the namespace should be discarded + * and the index in the stack otherwise. + */ +static int +nsPush(xmlParserCtxtPtr ctxt, const xmlChar *prefix, const xmlChar *URL) +{ + if (ctxt->options & XML_PARSE_NSCLEAN) { + int i; + for (i = ctxt->nsNr - 2;i >= 0;i -= 2) { + if (ctxt->nsTab[i] == prefix) { + /* in scope */ + if (ctxt->nsTab[i + 1] == URL) + return(-2); + /* out of scope keep it */ + break; + } + } + } + if ((ctxt->nsMax == 0) || (ctxt->nsTab == NULL)) { + ctxt->nsMax = 10; + ctxt->nsNr = 0; + ctxt->nsTab = (const xmlChar **) + xmlMalloc(ctxt->nsMax * sizeof(xmlChar *)); + if (ctxt->nsTab == NULL) { + xmlErrMemory(ctxt, NULL); + ctxt->nsMax = 0; + return (-1); + } + } else if (ctxt->nsNr >= ctxt->nsMax) { + const xmlChar ** tmp; + ctxt->nsMax *= 2; + tmp = (const xmlChar **) xmlRealloc((char *) ctxt->nsTab, + ctxt->nsMax * sizeof(ctxt->nsTab[0])); + if (tmp == NULL) { + xmlErrMemory(ctxt, NULL); + ctxt->nsMax /= 2; + return (-1); + } + ctxt->nsTab = tmp; + } + ctxt->nsTab[ctxt->nsNr++] = prefix; + ctxt->nsTab[ctxt->nsNr++] = URL; + return (ctxt->nsNr); +} +/** + * nsPop: + * @ctxt: an XML parser context + * @nr: the number to pop + * + * Pops the top @nr parser prefix/namespace from the ns stack + * + * Returns the number of namespaces removed + */ +static int +nsPop(xmlParserCtxtPtr ctxt, int nr) +{ + int i; + + if (ctxt->nsTab == NULL) return(0); + if (ctxt->nsNr < nr) { + xmlGenericError(xmlGenericErrorContext, "Pbm popping %d NS\n", nr); + nr = ctxt->nsNr; + } + if (ctxt->nsNr <= 0) + return (0); + + for (i = 0;i < nr;i++) { + ctxt->nsNr--; + ctxt->nsTab[ctxt->nsNr] = NULL; + } + return(nr); +} +#endif + +static int +xmlCtxtGrowAttrs(xmlParserCtxtPtr ctxt, int nr) { + const xmlChar **atts; + int *attallocs; + int maxatts; + + if (ctxt->atts == NULL) { + maxatts = 55; /* allow for 10 attrs by default */ + atts = (const xmlChar **) + xmlMalloc(maxatts * sizeof(xmlChar *)); + if (atts == NULL) goto mem_error; + ctxt->atts = atts; + attallocs = (int *) xmlMalloc((maxatts / 5) * sizeof(int)); + if (attallocs == NULL) goto mem_error; + ctxt->attallocs = attallocs; + ctxt->maxatts = maxatts; + } else if (nr + 5 > ctxt->maxatts) { + maxatts = (nr + 5) * 2; + atts = (const xmlChar **) xmlRealloc((void *) ctxt->atts, + maxatts * sizeof(const xmlChar *)); + if (atts == NULL) goto mem_error; + ctxt->atts = atts; + attallocs = (int *) xmlRealloc((void *) ctxt->attallocs, + (maxatts / 5) * sizeof(int)); + if (attallocs == NULL) goto mem_error; + ctxt->attallocs = attallocs; + ctxt->maxatts = maxatts; + } + return(ctxt->maxatts); +mem_error: + xmlErrMemory(ctxt, NULL); + return(-1); +} + +/** + * inputPush: + * @ctxt: an XML parser context + * @value: the parser input + * + * Pushes a new parser input on top of the input stack + * + * Returns -1 in case of error, the index in the stack otherwise + */ +int +inputPush(xmlParserCtxtPtr ctxt, xmlParserInputPtr value) +{ + if ((ctxt == NULL) || (value == NULL)) + return(-1); + if (ctxt->inputNr >= ctxt->inputMax) { + ctxt->inputMax *= 2; + ctxt->inputTab = + (xmlParserInputPtr *) xmlRealloc(ctxt->inputTab, + ctxt->inputMax * + sizeof(ctxt->inputTab[0])); + if (ctxt->inputTab == NULL) { + xmlErrMemory(ctxt, NULL); + xmlFreeInputStream(value); + ctxt->inputMax /= 2; + value = NULL; + return (-1); + } + } + ctxt->inputTab[ctxt->inputNr] = value; + ctxt->input = value; + return (ctxt->inputNr++); +} +/** + * inputPop: + * @ctxt: an XML parser context + * + * Pops the top parser input from the input stack + * + * Returns the input just removed + */ +xmlParserInputPtr +inputPop(xmlParserCtxtPtr ctxt) +{ + xmlParserInputPtr ret; + + if (ctxt == NULL) + return(NULL); + if (ctxt->inputNr <= 0) + return (NULL); + ctxt->inputNr--; + if (ctxt->inputNr > 0) + ctxt->input = ctxt->inputTab[ctxt->inputNr - 1]; + else + ctxt->input = NULL; + ret = ctxt->inputTab[ctxt->inputNr]; + ctxt->inputTab[ctxt->inputNr] = NULL; + return (ret); +} +/** + * nodePush: + * @ctxt: an XML parser context + * @value: the element node + * + * Pushes a new element node on top of the node stack + * + * Returns -1 in case of error, the index in the stack otherwise + */ +int +nodePush(xmlParserCtxtPtr ctxt, xmlNodePtr value) +{ + if (ctxt == NULL) return(0); + if (ctxt->nodeNr >= ctxt->nodeMax) { + xmlNodePtr *tmp; + + tmp = (xmlNodePtr *) xmlRealloc(ctxt->nodeTab, + ctxt->nodeMax * 2 * + sizeof(ctxt->nodeTab[0])); + if (tmp == NULL) { + xmlErrMemory(ctxt, NULL); + return (-1); + } + ctxt->nodeTab = tmp; + ctxt->nodeMax *= 2; + } + if ((((unsigned int) ctxt->nodeNr) > xmlParserMaxDepth) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErrMsgInt(ctxt, XML_ERR_INTERNAL_ERROR, + "Excessive depth in document: %d use XML_PARSE_HUGE option\n", + xmlParserMaxDepth); + xmlHaltParser(ctxt); + return(-1); + } + ctxt->nodeTab[ctxt->nodeNr] = value; + ctxt->node = value; + return (ctxt->nodeNr++); +} + +/** + * nodePop: + * @ctxt: an XML parser context + * + * Pops the top element node from the node stack + * + * Returns the node just removed + */ +xmlNodePtr +nodePop(xmlParserCtxtPtr ctxt) +{ + xmlNodePtr ret; + + if (ctxt == NULL) return(NULL); + if (ctxt->nodeNr <= 0) + return (NULL); + ctxt->nodeNr--; + if (ctxt->nodeNr > 0) + ctxt->node = ctxt->nodeTab[ctxt->nodeNr - 1]; + else + ctxt->node = NULL; + ret = ctxt->nodeTab[ctxt->nodeNr]; + ctxt->nodeTab[ctxt->nodeNr] = NULL; + return (ret); +} + +/** + * nameNsPush: + * @ctxt: an XML parser context + * @value: the element name + * @prefix: the element prefix + * @URI: the element namespace name + * + * Pushes a new element name/prefix/URL on top of the name stack + * + * Returns -1 in case of error, the index in the stack otherwise + */ +static int +nameNsPush(xmlParserCtxtPtr ctxt, const xmlChar * value, + const xmlChar *prefix, const xmlChar *URI, int nsNr) +{ + if (ctxt->nameNr >= ctxt->nameMax) { + const xmlChar * *tmp; + void **tmp2; + ctxt->nameMax *= 2; + tmp = (const xmlChar * *) xmlRealloc((xmlChar * *)ctxt->nameTab, + ctxt->nameMax * + sizeof(ctxt->nameTab[0])); + if (tmp == NULL) { + ctxt->nameMax /= 2; + goto mem_error; + } + ctxt->nameTab = tmp; + tmp2 = (void **) xmlRealloc((void * *)ctxt->pushTab, + ctxt->nameMax * 3 * + sizeof(ctxt->pushTab[0])); + if (tmp2 == NULL) { + ctxt->nameMax /= 2; + goto mem_error; + } + ctxt->pushTab = tmp2; + } else if (ctxt->pushTab == NULL) { + ctxt->pushTab = (void **) xmlMalloc(ctxt->nameMax * 3 * + sizeof(ctxt->pushTab[0])); + if (ctxt->pushTab == NULL) + goto mem_error; + } + ctxt->nameTab[ctxt->nameNr] = value; + ctxt->name = value; + ctxt->pushTab[ctxt->nameNr * 3] = (void *) prefix; + ctxt->pushTab[ctxt->nameNr * 3 + 1] = (void *) URI; + ctxt->pushTab[ctxt->nameNr * 3 + 2] = (void *) (ptrdiff_t) nsNr; + return (ctxt->nameNr++); +mem_error: + xmlErrMemory(ctxt, NULL); + return (-1); +} +#ifdef LIBXML_PUSH_ENABLED +/** + * nameNsPop: + * @ctxt: an XML parser context + * + * Pops the top element/prefix/URI name from the name stack + * + * Returns the name just removed + */ +static const xmlChar * +nameNsPop(xmlParserCtxtPtr ctxt) +{ + const xmlChar *ret; + + if (ctxt->nameNr <= 0) + return (NULL); + ctxt->nameNr--; + if (ctxt->nameNr > 0) + ctxt->name = ctxt->nameTab[ctxt->nameNr - 1]; + else + ctxt->name = NULL; + ret = ctxt->nameTab[ctxt->nameNr]; + ctxt->nameTab[ctxt->nameNr] = NULL; + return (ret); +} +#endif /* LIBXML_PUSH_ENABLED */ + +/** + * namePush: + * @ctxt: an XML parser context + * @value: the element name + * + * Pushes a new element name on top of the name stack + * + * Returns -1 in case of error, the index in the stack otherwise + */ +int +namePush(xmlParserCtxtPtr ctxt, const xmlChar * value) +{ + if (ctxt == NULL) return (-1); + + if (ctxt->nameNr >= ctxt->nameMax) { + const xmlChar * *tmp; + tmp = (const xmlChar * *) xmlRealloc((xmlChar * *)ctxt->nameTab, + ctxt->nameMax * 2 * + sizeof(ctxt->nameTab[0])); + if (tmp == NULL) { + goto mem_error; + } + ctxt->nameTab = tmp; + ctxt->nameMax *= 2; + } + ctxt->nameTab[ctxt->nameNr] = value; + ctxt->name = value; + return (ctxt->nameNr++); +mem_error: + xmlErrMemory(ctxt, NULL); + return (-1); +} +/** + * namePop: + * @ctxt: an XML parser context + * + * Pops the top element name from the name stack + * + * Returns the name just removed + */ +const xmlChar * +namePop(xmlParserCtxtPtr ctxt) +{ + const xmlChar *ret; + + if ((ctxt == NULL) || (ctxt->nameNr <= 0)) + return (NULL); + ctxt->nameNr--; + if (ctxt->nameNr > 0) + ctxt->name = ctxt->nameTab[ctxt->nameNr - 1]; + else + ctxt->name = NULL; + ret = ctxt->nameTab[ctxt->nameNr]; + ctxt->nameTab[ctxt->nameNr] = NULL; + return (ret); +} + +static int spacePush(xmlParserCtxtPtr ctxt, int val) { + if (ctxt->spaceNr >= ctxt->spaceMax) { + int *tmp; + + ctxt->spaceMax *= 2; + tmp = (int *) xmlRealloc(ctxt->spaceTab, + ctxt->spaceMax * sizeof(ctxt->spaceTab[0])); + if (tmp == NULL) { + xmlErrMemory(ctxt, NULL); + ctxt->spaceMax /=2; + return(-1); + } + ctxt->spaceTab = tmp; + } + ctxt->spaceTab[ctxt->spaceNr] = val; + ctxt->space = &ctxt->spaceTab[ctxt->spaceNr]; + return(ctxt->spaceNr++); +} + +static int spacePop(xmlParserCtxtPtr ctxt) { + int ret; + if (ctxt->spaceNr <= 0) return(0); + ctxt->spaceNr--; + if (ctxt->spaceNr > 0) + ctxt->space = &ctxt->spaceTab[ctxt->spaceNr - 1]; + else + ctxt->space = &ctxt->spaceTab[0]; + ret = ctxt->spaceTab[ctxt->spaceNr]; + ctxt->spaceTab[ctxt->spaceNr] = -1; + return(ret); +} + +/* + * Macros for accessing the content. Those should be used only by the parser, + * and not exported. + * + * Dirty macros, i.e. one often need to make assumption on the context to + * use them + * + * CUR_PTR return the current pointer to the xmlChar to be parsed. + * To be used with extreme caution since operations consuming + * characters may move the input buffer to a different location ! + * CUR returns the current xmlChar value, i.e. a 8 bit value if compiled + * This should be used internally by the parser + * only to compare to ASCII values otherwise it would break when + * running with UTF-8 encoding. + * RAW same as CUR but in the input buffer, bypass any token + * extraction that may have been done + * NXT(n) returns the n'th next xmlChar. Same as CUR is should be used only + * to compare on ASCII based substring. + * SKIP(n) Skip n xmlChar, and must also be used only to skip ASCII defined + * strings without newlines within the parser. + * NEXT1(l) Skip 1 xmlChar, and must also be used only to skip 1 non-newline ASCII + * defined char within the parser. + * Clean macros, not dependent of an ASCII context, expect UTF-8 encoding + * + * NEXT Skip to the next character, this does the proper decoding + * in UTF-8 mode. It also pop-up unfinished entities on the fly. + * NEXTL(l) Skip the current unicode character of l xmlChars long. + * CUR_CHAR(l) returns the current unicode character (int), set l + * to the number of xmlChars used for the encoding [0-5]. + * CUR_SCHAR same but operate on a string instead of the context + * COPY_BUF copy the current unicode char to the target buffer, increment + * the index + * GROW, SHRINK handling of input buffers + */ + +#define RAW (*ctxt->input->cur) +#define CUR (*ctxt->input->cur) +#define NXT(val) ctxt->input->cur[(val)] +#define CUR_PTR ctxt->input->cur +#define BASE_PTR ctxt->input->base + +#define CMP4( s, c1, c2, c3, c4 ) \ + ( ((unsigned char *) s)[ 0 ] == c1 && ((unsigned char *) s)[ 1 ] == c2 && \ + ((unsigned char *) s)[ 2 ] == c3 && ((unsigned char *) s)[ 3 ] == c4 ) +#define CMP5( s, c1, c2, c3, c4, c5 ) \ + ( CMP4( s, c1, c2, c3, c4 ) && ((unsigned char *) s)[ 4 ] == c5 ) +#define CMP6( s, c1, c2, c3, c4, c5, c6 ) \ + ( CMP5( s, c1, c2, c3, c4, c5 ) && ((unsigned char *) s)[ 5 ] == c6 ) +#define CMP7( s, c1, c2, c3, c4, c5, c6, c7 ) \ + ( CMP6( s, c1, c2, c3, c4, c5, c6 ) && ((unsigned char *) s)[ 6 ] == c7 ) +#define CMP8( s, c1, c2, c3, c4, c5, c6, c7, c8 ) \ + ( CMP7( s, c1, c2, c3, c4, c5, c6, c7 ) && ((unsigned char *) s)[ 7 ] == c8 ) +#define CMP9( s, c1, c2, c3, c4, c5, c6, c7, c8, c9 ) \ + ( CMP8( s, c1, c2, c3, c4, c5, c6, c7, c8 ) && \ + ((unsigned char *) s)[ 8 ] == c9 ) +#define CMP10( s, c1, c2, c3, c4, c5, c6, c7, c8, c9, c10 ) \ + ( CMP9( s, c1, c2, c3, c4, c5, c6, c7, c8, c9 ) && \ + ((unsigned char *) s)[ 9 ] == c10 ) + +#define SKIP(val) do { \ + ctxt->nbChars += (val),ctxt->input->cur += (val),ctxt->input->col+=(val); \ + if (*ctxt->input->cur == 0) \ + xmlParserInputGrow(ctxt->input, INPUT_CHUNK); \ + } while (0) + +#define SKIPL(val) do { \ + int skipl; \ + for(skipl=0; skipl<val; skipl++) { \ + if (*(ctxt->input->cur) == '\n') { \ + ctxt->input->line++; ctxt->input->col = 1; \ + } else ctxt->input->col++; \ + ctxt->nbChars++; \ + ctxt->input->cur++; \ + } \ + if (*ctxt->input->cur == 0) \ + xmlParserInputGrow(ctxt->input, INPUT_CHUNK); \ + } while (0) + +#define SHRINK if ((ctxt->progressive == 0) && \ + (ctxt->input->cur - ctxt->input->base > 2 * INPUT_CHUNK) && \ + (ctxt->input->end - ctxt->input->cur < 2 * INPUT_CHUNK)) \ + xmlSHRINK (ctxt); + +static void xmlSHRINK (xmlParserCtxtPtr ctxt) { + xmlParserInputShrink(ctxt->input); + if (*ctxt->input->cur == 0) + xmlParserInputGrow(ctxt->input, INPUT_CHUNK); +} + +#define GROW if ((ctxt->progressive == 0) && \ + (ctxt->input->end - ctxt->input->cur < INPUT_CHUNK)) \ + xmlGROW (ctxt); + +static void xmlGROW (xmlParserCtxtPtr ctxt) { + ptrdiff_t curEnd = ctxt->input->end - ctxt->input->cur; + ptrdiff_t curBase = ctxt->input->cur - ctxt->input->base; + + if (((curEnd > XML_MAX_LOOKUP_LIMIT) || + (curBase > XML_MAX_LOOKUP_LIMIT)) && + ((ctxt->input->buf) && + (ctxt->input->buf->readcallback != xmlInputReadCallbackNop)) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR, "Huge input lookup"); + xmlHaltParser(ctxt); + return; + } + xmlParserInputGrow(ctxt->input, INPUT_CHUNK); + if ((ctxt->input->cur > ctxt->input->end) || + (ctxt->input->cur < ctxt->input->base)) { + xmlHaltParser(ctxt); + xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR, "cur index out of bound"); + return; + } + if ((ctxt->input->cur != NULL) && (*ctxt->input->cur == 0)) + xmlParserInputGrow(ctxt->input, INPUT_CHUNK); +} + +#define SKIP_BLANKS xmlSkipBlankChars(ctxt) + +#define NEXT xmlNextChar(ctxt) + +#define NEXT1 { \ + ctxt->input->col++; \ + ctxt->input->cur++; \ + ctxt->nbChars++; \ + if (*ctxt->input->cur == 0) \ + xmlParserInputGrow(ctxt->input, INPUT_CHUNK); \ + } + +#define NEXTL(l) do { \ + if (*(ctxt->input->cur) == '\n') { \ + ctxt->input->line++; ctxt->input->col = 1; \ + } else ctxt->input->col++; \ + ctxt->input->cur += l; \ + } while (0) + +#define CUR_CHAR(l) xmlCurrentChar(ctxt, &l) +#define CUR_SCHAR(s, l) xmlStringCurrentChar(ctxt, s, &l) + +#define COPY_BUF(l,b,i,v) \ + if (l == 1) b[i++] = (xmlChar) v; \ + else i += xmlCopyCharMultiByte(&b[i],v) + +/** + * xmlSkipBlankChars: + * @ctxt: the XML parser context + * + * skip all blanks character found at that point in the input streams. + * It pops up finished entities in the process if allowable at that point. + * + * Returns the number of space chars skipped + */ + +int +xmlSkipBlankChars(xmlParserCtxtPtr ctxt) { + int res = 0; + + /* + * It's Okay to use CUR/NEXT here since all the blanks are on + * the ASCII range. + */ + if ((ctxt->inputNr == 1) && (ctxt->instate != XML_PARSER_DTD)) { + const xmlChar *cur; + /* + * if we are in the document content, go really fast + */ + cur = ctxt->input->cur; + while (IS_BLANK_CH(*cur)) { + if (*cur == '\n') { + ctxt->input->line++; ctxt->input->col = 1; + } else { + ctxt->input->col++; + } + cur++; + res++; + if (*cur == 0) { + ctxt->input->cur = cur; + xmlParserInputGrow(ctxt->input, INPUT_CHUNK); + cur = ctxt->input->cur; + } + } + ctxt->input->cur = cur; + } else { + int expandPE = ((ctxt->external != 0) || (ctxt->inputNr != 1)); + + while (1) { + if (IS_BLANK_CH(CUR)) { /* CHECKED tstblanks.xml */ + NEXT; + } else if (CUR == '%') { + /* + * Need to handle support of entities branching here + */ + if ((expandPE == 0) || (IS_BLANK_CH(NXT(1))) || (NXT(1) == 0)) + break; + xmlParsePEReference(ctxt); + } else if (CUR == 0) { + if (ctxt->inputNr <= 1) + break; + xmlPopInput(ctxt); + } else { + break; + } + + /* + * Also increase the counter when entering or exiting a PERef. + * The spec says: "When a parameter-entity reference is recognized + * in the DTD and included, its replacement text MUST be enlarged + * by the attachment of one leading and one following space (#x20) + * character." + */ + res++; + } + } + return(res); +} + +/************************************************************************ + * * + * Commodity functions to handle entities * + * * + ************************************************************************/ + +/** + * xmlPopInput: + * @ctxt: an XML parser context + * + * xmlPopInput: the current input pointed by ctxt->input came to an end + * pop it and return the next char. + * + * Returns the current xmlChar in the parser context + */ +xmlChar +xmlPopInput(xmlParserCtxtPtr ctxt) { + if ((ctxt == NULL) || (ctxt->inputNr <= 1)) return(0); + if (xmlParserDebugEntities) + xmlGenericError(xmlGenericErrorContext, + "Popping input %d\n", ctxt->inputNr); + if ((ctxt->inputNr > 1) && (ctxt->inSubset == 0) && + (ctxt->instate != XML_PARSER_EOF)) + xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR, + "Unfinished entity outside the DTD"); + xmlFreeInputStream(inputPop(ctxt)); + if (*ctxt->input->cur == 0) + xmlParserInputGrow(ctxt->input, INPUT_CHUNK); + return(CUR); +} + +/** + * xmlPushInput: + * @ctxt: an XML parser context + * @input: an XML parser input fragment (entity, XML fragment ...). + * + * xmlPushInput: switch to a new input stream which is stacked on top + * of the previous one(s). + * Returns -1 in case of error or the index in the input stack + */ +int +xmlPushInput(xmlParserCtxtPtr ctxt, xmlParserInputPtr input) { + int ret; + if (input == NULL) return(-1); + + if (xmlParserDebugEntities) { + if ((ctxt->input != NULL) && (ctxt->input->filename)) + xmlGenericError(xmlGenericErrorContext, + "%s(%d): ", ctxt->input->filename, + ctxt->input->line); + xmlGenericError(xmlGenericErrorContext, + "Pushing input %d : %.30s\n", ctxt->inputNr+1, input->cur); + } + if (((ctxt->inputNr > 40) && ((ctxt->options & XML_PARSE_HUGE) == 0)) || + (ctxt->inputNr > 1024)) { + xmlFatalErr(ctxt, XML_ERR_ENTITY_LOOP, NULL); + while (ctxt->inputNr > 1) + xmlFreeInputStream(inputPop(ctxt)); + return(-1); + } + ret = inputPush(ctxt, input); + if (ctxt->instate == XML_PARSER_EOF) + return(-1); + GROW; + return(ret); +} + +/** + * xmlParseCharRef: + * @ctxt: an XML parser context + * + * parse Reference declarations + * + * [66] CharRef ::= '&#' [0-9]+ ';' | + * '&#x' [0-9a-fA-F]+ ';' + * + * [ WFC: Legal Character ] + * Characters referred to using character references must match the + * production for Char. + * + * Returns the value parsed (as an int), 0 in case of error + */ +int +xmlParseCharRef(xmlParserCtxtPtr ctxt) { + int val = 0; + int count = 0; + + /* + * Using RAW/CUR/NEXT is okay since we are working on ASCII range here + */ + if ((RAW == '&') && (NXT(1) == '#') && + (NXT(2) == 'x')) { + SKIP(3); + GROW; + while (RAW != ';') { /* loop blocked by count */ + if (count++ > 20) { + count = 0; + GROW; + if (ctxt->instate == XML_PARSER_EOF) + return(0); + } + if ((RAW >= '0') && (RAW <= '9')) + val = val * 16 + (CUR - '0'); + else if ((RAW >= 'a') && (RAW <= 'f') && (count < 20)) + val = val * 16 + (CUR - 'a') + 10; + else if ((RAW >= 'A') && (RAW <= 'F') && (count < 20)) + val = val * 16 + (CUR - 'A') + 10; + else { + xmlFatalErr(ctxt, XML_ERR_INVALID_HEX_CHARREF, NULL); + val = 0; + break; + } + if (val > 0x110000) + val = 0x110000; + + NEXT; + count++; + } + if (RAW == ';') { + /* on purpose to avoid reentrancy problems with NEXT and SKIP */ + ctxt->input->col++; + ctxt->nbChars ++; + ctxt->input->cur++; + } + } else if ((RAW == '&') && (NXT(1) == '#')) { + SKIP(2); + GROW; + while (RAW != ';') { /* loop blocked by count */ + if (count++ > 20) { + count = 0; + GROW; + if (ctxt->instate == XML_PARSER_EOF) + return(0); + } + if ((RAW >= '0') && (RAW <= '9')) + val = val * 10 + (CUR - '0'); + else { + xmlFatalErr(ctxt, XML_ERR_INVALID_DEC_CHARREF, NULL); + val = 0; + break; + } + if (val > 0x110000) + val = 0x110000; + + NEXT; + count++; + } + if (RAW == ';') { + /* on purpose to avoid reentrancy problems with NEXT and SKIP */ + ctxt->input->col++; + ctxt->nbChars ++; + ctxt->input->cur++; + } + } else { + xmlFatalErr(ctxt, XML_ERR_INVALID_CHARREF, NULL); + } + + /* + * [ WFC: Legal Character ] + * Characters referred to using character references must match the + * production for Char. + */ + if (val >= 0x110000) { + xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR, + "xmlParseCharRef: character reference out of bounds\n", + val); + } else if (IS_CHAR(val)) { + return(val); + } else { + xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR, + "xmlParseCharRef: invalid xmlChar value %d\n", + val); + } + return(0); +} + +/** + * xmlParseStringCharRef: + * @ctxt: an XML parser context + * @str: a pointer to an index in the string + * + * parse Reference declarations, variant parsing from a string rather + * than an an input flow. + * + * [66] CharRef ::= '&#' [0-9]+ ';' | + * '&#x' [0-9a-fA-F]+ ';' + * + * [ WFC: Legal Character ] + * Characters referred to using character references must match the + * production for Char. + * + * Returns the value parsed (as an int), 0 in case of error, str will be + * updated to the current value of the index + */ +static int +xmlParseStringCharRef(xmlParserCtxtPtr ctxt, const xmlChar **str) { + const xmlChar *ptr; + xmlChar cur; + int val = 0; + + if ((str == NULL) || (*str == NULL)) return(0); + ptr = *str; + cur = *ptr; + if ((cur == '&') && (ptr[1] == '#') && (ptr[2] == 'x')) { + ptr += 3; + cur = *ptr; + while (cur != ';') { /* Non input consuming loop */ + if ((cur >= '0') && (cur <= '9')) + val = val * 16 + (cur - '0'); + else if ((cur >= 'a') && (cur <= 'f')) + val = val * 16 + (cur - 'a') + 10; + else if ((cur >= 'A') && (cur <= 'F')) + val = val * 16 + (cur - 'A') + 10; + else { + xmlFatalErr(ctxt, XML_ERR_INVALID_HEX_CHARREF, NULL); + val = 0; + break; + } + if (val > 0x110000) + val = 0x110000; + + ptr++; + cur = *ptr; + } + if (cur == ';') + ptr++; + } else if ((cur == '&') && (ptr[1] == '#')){ + ptr += 2; + cur = *ptr; + while (cur != ';') { /* Non input consuming loops */ + if ((cur >= '0') && (cur <= '9')) + val = val * 10 + (cur - '0'); + else { + xmlFatalErr(ctxt, XML_ERR_INVALID_DEC_CHARREF, NULL); + val = 0; + break; + } + if (val > 0x110000) + val = 0x110000; + + ptr++; + cur = *ptr; + } + if (cur == ';') + ptr++; + } else { + xmlFatalErr(ctxt, XML_ERR_INVALID_CHARREF, NULL); + return(0); + } + *str = ptr; + + /* + * [ WFC: Legal Character ] + * Characters referred to using character references must match the + * production for Char. + */ + if (val >= 0x110000) { + xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR, + "xmlParseStringCharRef: character reference out of bounds\n", + val); + } else if (IS_CHAR(val)) { + return(val); + } else { + xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR, + "xmlParseStringCharRef: invalid xmlChar value %d\n", + val); + } + return(0); +} + +/** + * xmlParserHandlePEReference: + * @ctxt: the parser context + * + * [69] PEReference ::= '%' Name ';' + * + * [ WFC: No Recursion ] + * A parsed entity must not contain a recursive + * reference to itself, either directly or indirectly. + * + * [ WFC: Entity Declared ] + * In a document without any DTD, a document with only an internal DTD + * subset which contains no parameter entity references, or a document + * with "standalone='yes'", ... ... The declaration of a parameter + * entity must precede any reference to it... + * + * [ VC: Entity Declared ] + * In a document with an external subset or external parameter entities + * with "standalone='no'", ... ... The declaration of a parameter entity + * must precede any reference to it... + * + * [ WFC: In DTD ] + * Parameter-entity references may only appear in the DTD. + * NOTE: misleading but this is handled. + * + * A PEReference may have been detected in the current input stream + * the handling is done accordingly to + * http://www.w3.org/TR/REC-xml#entproc + * i.e. + * - Included in literal in entity values + * - Included as Parameter Entity reference within DTDs + */ +void +xmlParserHandlePEReference(xmlParserCtxtPtr ctxt) { + switch(ctxt->instate) { + case XML_PARSER_CDATA_SECTION: + return; + case XML_PARSER_COMMENT: + return; + case XML_PARSER_START_TAG: + return; + case XML_PARSER_END_TAG: + return; + case XML_PARSER_EOF: + xmlFatalErr(ctxt, XML_ERR_PEREF_AT_EOF, NULL); + return; + case XML_PARSER_PROLOG: + case XML_PARSER_START: + case XML_PARSER_MISC: + xmlFatalErr(ctxt, XML_ERR_PEREF_IN_PROLOG, NULL); + return; + case XML_PARSER_ENTITY_DECL: + case XML_PARSER_CONTENT: + case XML_PARSER_ATTRIBUTE_VALUE: + case XML_PARSER_PI: + case XML_PARSER_SYSTEM_LITERAL: + case XML_PARSER_PUBLIC_LITERAL: + /* we just ignore it there */ + return; + case XML_PARSER_EPILOG: + xmlFatalErr(ctxt, XML_ERR_PEREF_IN_EPILOG, NULL); + return; + case XML_PARSER_ENTITY_VALUE: + /* + * NOTE: in the case of entity values, we don't do the + * substitution here since we need the literal + * entity value to be able to save the internal + * subset of the document. + * This will be handled by xmlStringDecodeEntities + */ + return; + case XML_PARSER_DTD: + /* + * [WFC: Well-Formedness Constraint: PEs in Internal Subset] + * In the internal DTD subset, parameter-entity references + * can occur only where markup declarations can occur, not + * within markup declarations. + * In that case this is handled in xmlParseMarkupDecl + */ + if ((ctxt->external == 0) && (ctxt->inputNr == 1)) + return; + if (IS_BLANK_CH(NXT(1)) || NXT(1) == 0) + return; + break; + case XML_PARSER_IGNORE: + return; + } + + xmlParsePEReference(ctxt); +} + +/* + * Macro used to grow the current buffer. + * buffer##_size is expected to be a size_t + * mem_error: is expected to handle memory allocation failures + */ +#define growBuffer(buffer, n) { \ + xmlChar *tmp; \ + size_t new_size = buffer##_size * 2 + n; \ + if (new_size < buffer##_size) goto mem_error; \ + tmp = (xmlChar *) xmlRealloc(buffer, new_size); \ + if (tmp == NULL) goto mem_error; \ + buffer = tmp; \ + buffer##_size = new_size; \ +} + +/** + * xmlStringLenDecodeEntities: + * @ctxt: the parser context + * @str: the input string + * @len: the string length + * @what: combination of XML_SUBSTITUTE_REF and XML_SUBSTITUTE_PEREF + * @end: an end marker xmlChar, 0 if none + * @end2: an end marker xmlChar, 0 if none + * @end3: an end marker xmlChar, 0 if none + * + * Takes a entity string content and process to do the adequate substitutions. + * + * [67] Reference ::= EntityRef | CharRef + * + * [69] PEReference ::= '%' Name ';' + * + * Returns A newly allocated string with the substitution done. The caller + * must deallocate it ! + */ +xmlChar * +xmlStringLenDecodeEntities(xmlParserCtxtPtr ctxt, const xmlChar *str, int len, + int what, xmlChar end, xmlChar end2, xmlChar end3) { + xmlChar *buffer = NULL; + size_t buffer_size = 0; + size_t nbchars = 0; + + xmlChar *current = NULL; + xmlChar *rep = NULL; + const xmlChar *last; + xmlEntityPtr ent; + int c,l; + + if ((ctxt == NULL) || (str == NULL) || (len < 0)) + return(NULL); + last = str + len; + + if (((ctxt->depth > 40) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) || + (ctxt->depth > 1024)) { + xmlFatalErr(ctxt, XML_ERR_ENTITY_LOOP, NULL); + return(NULL); + } + + /* + * allocate a translation buffer. + */ + buffer_size = XML_PARSER_BIG_BUFFER_SIZE; + buffer = (xmlChar *) xmlMallocAtomic(buffer_size); + if (buffer == NULL) goto mem_error; + + /* + * OK loop until we reach one of the ending char or a size limit. + * we are operating on already parsed values. + */ + if (str < last) + c = CUR_SCHAR(str, l); + else + c = 0; + while ((c != 0) && (c != end) && /* non input consuming loop */ + (c != end2) && (c != end3)) { + + if (c == 0) break; + if ((c == '&') && (str[1] == '#')) { + int val = xmlParseStringCharRef(ctxt, &str); + if (val == 0) + goto int_error; + COPY_BUF(0,buffer,nbchars,val); + if (nbchars + XML_PARSER_BUFFER_SIZE > buffer_size) { + growBuffer(buffer, XML_PARSER_BUFFER_SIZE); + } + } else if ((c == '&') && (what & XML_SUBSTITUTE_REF)) { + if (xmlParserDebugEntities) + xmlGenericError(xmlGenericErrorContext, + "String decoding Entity Reference: %.30s\n", + str); + ent = xmlParseStringEntityRef(ctxt, &str); + xmlParserEntityCheck(ctxt, 0, ent, 0); + if (ent != NULL) + ctxt->nbentities += ent->checked / 2; + if ((ent != NULL) && + (ent->etype == XML_INTERNAL_PREDEFINED_ENTITY)) { + if (ent->content != NULL) { + COPY_BUF(0,buffer,nbchars,ent->content[0]); + if (nbchars + XML_PARSER_BUFFER_SIZE > buffer_size) { + growBuffer(buffer, XML_PARSER_BUFFER_SIZE); + } + } else { + xmlFatalErrMsg(ctxt, XML_ERR_INTERNAL_ERROR, + "predefined entity has no content\n"); + goto int_error; + } + } else if ((ent != NULL) && (ent->content != NULL)) { + ctxt->depth++; + rep = xmlStringDecodeEntities(ctxt, ent->content, what, + 0, 0, 0); + ctxt->depth--; + if (rep == NULL) + goto int_error; + + current = rep; + while (*current != 0) { /* non input consuming loop */ + buffer[nbchars++] = *current++; + if (nbchars + XML_PARSER_BUFFER_SIZE > buffer_size) { + if (xmlParserEntityCheck(ctxt, nbchars, ent, 0)) + goto int_error; + growBuffer(buffer, XML_PARSER_BUFFER_SIZE); + } + } + xmlFree(rep); + rep = NULL; + } else if (ent != NULL) { + int i = xmlStrlen(ent->name); + const xmlChar *cur = ent->name; + + buffer[nbchars++] = '&'; + if (nbchars + i + XML_PARSER_BUFFER_SIZE > buffer_size) { + growBuffer(buffer, i + XML_PARSER_BUFFER_SIZE); + } + for (;i > 0;i--) + buffer[nbchars++] = *cur++; + buffer[nbchars++] = ';'; + } + } else if (c == '%' && (what & XML_SUBSTITUTE_PEREF)) { + if (xmlParserDebugEntities) + xmlGenericError(xmlGenericErrorContext, + "String decoding PE Reference: %.30s\n", str); + ent = xmlParseStringPEReference(ctxt, &str); + xmlParserEntityCheck(ctxt, 0, ent, 0); + if (ent != NULL) + ctxt->nbentities += ent->checked / 2; + if (ent != NULL) { + if (ent->content == NULL) { + /* + * Note: external parsed entities will not be loaded, + * it is not required for a non-validating parser to + * complete external PEReferences coming from the + * internal subset + */ + if (((ctxt->options & XML_PARSE_NOENT) != 0) || + ((ctxt->options & XML_PARSE_DTDVALID) != 0) || + (ctxt->validate != 0)) { + xmlLoadEntityContent(ctxt, ent); + } else { + xmlWarningMsg(ctxt, XML_ERR_ENTITY_PROCESSING, + "not validating will not read content for PE entity %s\n", + ent->name, NULL); + } + } + ctxt->depth++; + rep = xmlStringDecodeEntities(ctxt, ent->content, what, + 0, 0, 0); + ctxt->depth--; + if (rep == NULL) + goto int_error; + current = rep; + while (*current != 0) { /* non input consuming loop */ + buffer[nbchars++] = *current++; + if (nbchars + XML_PARSER_BUFFER_SIZE > buffer_size) { + if (xmlParserEntityCheck(ctxt, nbchars, ent, 0)) + goto int_error; + growBuffer(buffer, XML_PARSER_BUFFER_SIZE); + } + } + xmlFree(rep); + rep = NULL; + } + } else { + COPY_BUF(l,buffer,nbchars,c); + str += l; + if (nbchars + XML_PARSER_BUFFER_SIZE > buffer_size) { + growBuffer(buffer, XML_PARSER_BUFFER_SIZE); + } + } + if (str < last) + c = CUR_SCHAR(str, l); + else + c = 0; + } + buffer[nbchars] = 0; + return(buffer); + +mem_error: + xmlErrMemory(ctxt, NULL); +int_error: + if (rep != NULL) + xmlFree(rep); + if (buffer != NULL) + xmlFree(buffer); + return(NULL); +} + +/** + * xmlStringDecodeEntities: + * @ctxt: the parser context + * @str: the input string + * @what: combination of XML_SUBSTITUTE_REF and XML_SUBSTITUTE_PEREF + * @end: an end marker xmlChar, 0 if none + * @end2: an end marker xmlChar, 0 if none + * @end3: an end marker xmlChar, 0 if none + * + * Takes a entity string content and process to do the adequate substitutions. + * + * [67] Reference ::= EntityRef | CharRef + * + * [69] PEReference ::= '%' Name ';' + * + * Returns A newly allocated string with the substitution done. The caller + * must deallocate it ! + */ +xmlChar * +xmlStringDecodeEntities(xmlParserCtxtPtr ctxt, const xmlChar *str, int what, + xmlChar end, xmlChar end2, xmlChar end3) { + if ((ctxt == NULL) || (str == NULL)) return(NULL); + return(xmlStringLenDecodeEntities(ctxt, str, xmlStrlen(str), what, + end, end2, end3)); +} + +/************************************************************************ + * * + * Commodity functions, cleanup needed ? * + * * + ************************************************************************/ + +/** + * areBlanks: + * @ctxt: an XML parser context + * @str: a xmlChar * + * @len: the size of @str + * @blank_chars: we know the chars are blanks + * + * Is this a sequence of blank chars that one can ignore ? + * + * Returns 1 if ignorable 0 otherwise. + */ + +static int areBlanks(xmlParserCtxtPtr ctxt, const xmlChar *str, int len, + int blank_chars) { + int i, ret; + xmlNodePtr lastChild; + + /* + * Don't spend time trying to differentiate them, the same callback is + * used ! + */ + if (ctxt->sax->ignorableWhitespace == ctxt->sax->characters) + return(0); + + /* + * Check for xml:space value. + */ + if ((ctxt->space == NULL) || (*(ctxt->space) == 1) || + (*(ctxt->space) == -2)) + return(0); + + /* + * Check that the string is made of blanks + */ + if (blank_chars == 0) { + for (i = 0;i < len;i++) + if (!(IS_BLANK_CH(str[i]))) return(0); + } + + /* + * Look if the element is mixed content in the DTD if available + */ + if (ctxt->node == NULL) return(0); + if (ctxt->myDoc != NULL) { + ret = xmlIsMixedElement(ctxt->myDoc, ctxt->node->name); + if (ret == 0) return(1); + if (ret == 1) return(0); + } + + /* + * Otherwise, heuristic :-\ + */ + if ((RAW != '<') && (RAW != 0xD)) return(0); + if ((ctxt->node->children == NULL) && + (RAW == '<') && (NXT(1) == '/')) return(0); + + lastChild = xmlGetLastChild(ctxt->node); + if (lastChild == NULL) { + if ((ctxt->node->type != XML_ELEMENT_NODE) && + (ctxt->node->content != NULL)) return(0); + } else if (xmlNodeIsText(lastChild)) + return(0); + else if ((ctxt->node->children != NULL) && + (xmlNodeIsText(ctxt->node->children))) + return(0); + return(1); +} + +/************************************************************************ + * * + * Extra stuff for namespace support * + * Relates to http://www.w3.org/TR/WD-xml-names * + * * + ************************************************************************/ + +/** + * xmlSplitQName: + * @ctxt: an XML parser context + * @name: an XML parser context + * @prefix: a xmlChar ** + * + * parse an UTF8 encoded XML qualified name string + * + * [NS 5] QName ::= (Prefix ':')? LocalPart + * + * [NS 6] Prefix ::= NCName + * + * [NS 7] LocalPart ::= NCName + * + * Returns the local part, and prefix is updated + * to get the Prefix if any. + */ + +xmlChar * +xmlSplitQName(xmlParserCtxtPtr ctxt, const xmlChar *name, xmlChar **prefix) { + xmlChar buf[XML_MAX_NAMELEN + 5]; + xmlChar *buffer = NULL; + int len = 0; + int max = XML_MAX_NAMELEN; + xmlChar *ret = NULL; + const xmlChar *cur = name; + int c; + + if (prefix == NULL) return(NULL); + *prefix = NULL; + + if (cur == NULL) return(NULL); + +#ifndef XML_XML_NAMESPACE + /* xml: prefix is not really a namespace */ + if ((cur[0] == 'x') && (cur[1] == 'm') && + (cur[2] == 'l') && (cur[3] == ':')) + return(xmlStrdup(name)); +#endif + + /* nasty but well=formed */ + if (cur[0] == ':') + return(xmlStrdup(name)); + + c = *cur++; + while ((c != 0) && (c != ':') && (len < max)) { /* tested bigname.xml */ + buf[len++] = c; + c = *cur++; + } + if (len >= max) { + /* + * Okay someone managed to make a huge name, so he's ready to pay + * for the processing speed. + */ + max = len * 2; + + buffer = (xmlChar *) xmlMallocAtomic(max * sizeof(xmlChar)); + if (buffer == NULL) { + xmlErrMemory(ctxt, NULL); + return(NULL); + } + memcpy(buffer, buf, len); + while ((c != 0) && (c != ':')) { /* tested bigname.xml */ + if (len + 10 > max) { + xmlChar *tmp; + + max *= 2; + tmp = (xmlChar *) xmlRealloc(buffer, + max * sizeof(xmlChar)); + if (tmp == NULL) { + xmlFree(buffer); + xmlErrMemory(ctxt, NULL); + return(NULL); + } + buffer = tmp; + } + buffer[len++] = c; + c = *cur++; + } + buffer[len] = 0; + } + + if ((c == ':') && (*cur == 0)) { + if (buffer != NULL) + xmlFree(buffer); + *prefix = NULL; + return(xmlStrdup(name)); + } + + if (buffer == NULL) + ret = xmlStrndup(buf, len); + else { + ret = buffer; + buffer = NULL; + max = XML_MAX_NAMELEN; + } + + + if (c == ':') { + c = *cur; + *prefix = ret; + if (c == 0) { + return(xmlStrndup(BAD_CAST "", 0)); + } + len = 0; + + /* + * Check that the first character is proper to start + * a new name + */ + if (!(((c >= 0x61) && (c <= 0x7A)) || + ((c >= 0x41) && (c <= 0x5A)) || + (c == '_') || (c == ':'))) { + int l; + int first = CUR_SCHAR(cur, l); + + if (!IS_LETTER(first) && (first != '_')) { + xmlFatalErrMsgStr(ctxt, XML_NS_ERR_QNAME, + "Name %s is not XML Namespace compliant\n", + name); + } + } + cur++; + + while ((c != 0) && (len < max)) { /* tested bigname2.xml */ + buf[len++] = c; + c = *cur++; + } + if (len >= max) { + /* + * Okay someone managed to make a huge name, so he's ready to pay + * for the processing speed. + */ + max = len * 2; + + buffer = (xmlChar *) xmlMallocAtomic(max * sizeof(xmlChar)); + if (buffer == NULL) { + xmlErrMemory(ctxt, NULL); + return(NULL); + } + memcpy(buffer, buf, len); + while (c != 0) { /* tested bigname2.xml */ + if (len + 10 > max) { + xmlChar *tmp; + + max *= 2; + tmp = (xmlChar *) xmlRealloc(buffer, + max * sizeof(xmlChar)); + if (tmp == NULL) { + xmlErrMemory(ctxt, NULL); + xmlFree(buffer); + return(NULL); + } + buffer = tmp; + } + buffer[len++] = c; + c = *cur++; + } + buffer[len] = 0; + } + + if (buffer == NULL) + ret = xmlStrndup(buf, len); + else { + ret = buffer; + } + } + + return(ret); +} + +/************************************************************************ + * * + * The parser itself * + * Relates to http://www.w3.org/TR/REC-xml * + * * + ************************************************************************/ + +/************************************************************************ + * * + * Routines to parse Name, NCName and NmToken * + * * + ************************************************************************/ +#ifdef DEBUG +static unsigned long nbParseName = 0; +static unsigned long nbParseNmToken = 0; +static unsigned long nbParseNCName = 0; +static unsigned long nbParseNCNameComplex = 0; +static unsigned long nbParseNameComplex = 0; +static unsigned long nbParseStringName = 0; +#endif + +/* + * The two following functions are related to the change of accepted + * characters for Name and NmToken in the Revision 5 of XML-1.0 + * They correspond to the modified production [4] and the new production [4a] + * changes in that revision. Also note that the macros used for the + * productions Letter, Digit, CombiningChar and Extender are not needed + * anymore. + * We still keep compatibility to pre-revision5 parsing semantic if the + * new XML_PARSE_OLD10 option is given to the parser. + */ +static int +xmlIsNameStartChar(xmlParserCtxtPtr ctxt, int c) { + if ((ctxt->options & XML_PARSE_OLD10) == 0) { + /* + * Use the new checks of production [4] [4a] amd [5] of the + * Update 5 of XML-1.0 + */ + if ((c != ' ') && (c != '>') && (c != '/') && /* accelerators */ + (((c >= 'a') && (c <= 'z')) || + ((c >= 'A') && (c <= 'Z')) || + (c == '_') || (c == ':') || + ((c >= 0xC0) && (c <= 0xD6)) || + ((c >= 0xD8) && (c <= 0xF6)) || + ((c >= 0xF8) && (c <= 0x2FF)) || + ((c >= 0x370) && (c <= 0x37D)) || + ((c >= 0x37F) && (c <= 0x1FFF)) || + ((c >= 0x200C) && (c <= 0x200D)) || + ((c >= 0x2070) && (c <= 0x218F)) || + ((c >= 0x2C00) && (c <= 0x2FEF)) || + ((c >= 0x3001) && (c <= 0xD7FF)) || + ((c >= 0xF900) && (c <= 0xFDCF)) || + ((c >= 0xFDF0) && (c <= 0xFFFD)) || + ((c >= 0x10000) && (c <= 0xEFFFF)))) + return(1); + } else { + if (IS_LETTER(c) || (c == '_') || (c == ':')) + return(1); + } + return(0); +} + +static int +xmlIsNameChar(xmlParserCtxtPtr ctxt, int c) { + if ((ctxt->options & XML_PARSE_OLD10) == 0) { + /* + * Use the new checks of production [4] [4a] amd [5] of the + * Update 5 of XML-1.0 + */ + if ((c != ' ') && (c != '>') && (c != '/') && /* accelerators */ + (((c >= 'a') && (c <= 'z')) || + ((c >= 'A') && (c <= 'Z')) || + ((c >= '0') && (c <= '9')) || /* !start */ + (c == '_') || (c == ':') || + (c == '-') || (c == '.') || (c == 0xB7) || /* !start */ + ((c >= 0xC0) && (c <= 0xD6)) || + ((c >= 0xD8) && (c <= 0xF6)) || + ((c >= 0xF8) && (c <= 0x2FF)) || + ((c >= 0x300) && (c <= 0x36F)) || /* !start */ + ((c >= 0x370) && (c <= 0x37D)) || + ((c >= 0x37F) && (c <= 0x1FFF)) || + ((c >= 0x200C) && (c <= 0x200D)) || + ((c >= 0x203F) && (c <= 0x2040)) || /* !start */ + ((c >= 0x2070) && (c <= 0x218F)) || + ((c >= 0x2C00) && (c <= 0x2FEF)) || + ((c >= 0x3001) && (c <= 0xD7FF)) || + ((c >= 0xF900) && (c <= 0xFDCF)) || + ((c >= 0xFDF0) && (c <= 0xFFFD)) || + ((c >= 0x10000) && (c <= 0xEFFFF)))) + return(1); + } else { + if ((IS_LETTER(c)) || (IS_DIGIT(c)) || + (c == '.') || (c == '-') || + (c == '_') || (c == ':') || + (IS_COMBINING(c)) || + (IS_EXTENDER(c))) + return(1); + } + return(0); +} + +static xmlChar * xmlParseAttValueInternal(xmlParserCtxtPtr ctxt, + int *len, int *alloc, int normalize); + +static const xmlChar * +xmlParseNameComplex(xmlParserCtxtPtr ctxt) { + int len = 0, l; + int c; + int count = 0; + +#ifdef DEBUG + nbParseNameComplex++; +#endif + + /* + * Handler for more complex cases + */ + GROW; + if (ctxt->instate == XML_PARSER_EOF) + return(NULL); + c = CUR_CHAR(l); + if ((ctxt->options & XML_PARSE_OLD10) == 0) { + /* + * Use the new checks of production [4] [4a] amd [5] of the + * Update 5 of XML-1.0 + */ + if ((c == ' ') || (c == '>') || (c == '/') || /* accelerators */ + (!(((c >= 'a') && (c <= 'z')) || + ((c >= 'A') && (c <= 'Z')) || + (c == '_') || (c == ':') || + ((c >= 0xC0) && (c <= 0xD6)) || + ((c >= 0xD8) && (c <= 0xF6)) || + ((c >= 0xF8) && (c <= 0x2FF)) || + ((c >= 0x370) && (c <= 0x37D)) || + ((c >= 0x37F) && (c <= 0x1FFF)) || + ((c >= 0x200C) && (c <= 0x200D)) || + ((c >= 0x2070) && (c <= 0x218F)) || + ((c >= 0x2C00) && (c <= 0x2FEF)) || + ((c >= 0x3001) && (c <= 0xD7FF)) || + ((c >= 0xF900) && (c <= 0xFDCF)) || + ((c >= 0xFDF0) && (c <= 0xFFFD)) || + ((c >= 0x10000) && (c <= 0xEFFFF))))) { + return(NULL); + } + len += l; + NEXTL(l); + c = CUR_CHAR(l); + while ((c != ' ') && (c != '>') && (c != '/') && /* accelerators */ + (((c >= 'a') && (c <= 'z')) || + ((c >= 'A') && (c <= 'Z')) || + ((c >= '0') && (c <= '9')) || /* !start */ + (c == '_') || (c == ':') || + (c == '-') || (c == '.') || (c == 0xB7) || /* !start */ + ((c >= 0xC0) && (c <= 0xD6)) || + ((c >= 0xD8) && (c <= 0xF6)) || + ((c >= 0xF8) && (c <= 0x2FF)) || + ((c >= 0x300) && (c <= 0x36F)) || /* !start */ + ((c >= 0x370) && (c <= 0x37D)) || + ((c >= 0x37F) && (c <= 0x1FFF)) || + ((c >= 0x200C) && (c <= 0x200D)) || + ((c >= 0x203F) && (c <= 0x2040)) || /* !start */ + ((c >= 0x2070) && (c <= 0x218F)) || + ((c >= 0x2C00) && (c <= 0x2FEF)) || + ((c >= 0x3001) && (c <= 0xD7FF)) || + ((c >= 0xF900) && (c <= 0xFDCF)) || + ((c >= 0xFDF0) && (c <= 0xFFFD)) || + ((c >= 0x10000) && (c <= 0xEFFFF)) + )) { + if (count++ > XML_PARSER_CHUNK_SIZE) { + count = 0; + GROW; + if (ctxt->instate == XML_PARSER_EOF) + return(NULL); + } + len += l; + NEXTL(l); + c = CUR_CHAR(l); + } + } else { + if ((c == ' ') || (c == '>') || (c == '/') || /* accelerators */ + (!IS_LETTER(c) && (c != '_') && + (c != ':'))) { + return(NULL); + } + len += l; + NEXTL(l); + c = CUR_CHAR(l); + + while ((c != ' ') && (c != '>') && (c != '/') && /* test bigname.xml */ + ((IS_LETTER(c)) || (IS_DIGIT(c)) || + (c == '.') || (c == '-') || + (c == '_') || (c == ':') || + (IS_COMBINING(c)) || + (IS_EXTENDER(c)))) { + if (count++ > XML_PARSER_CHUNK_SIZE) { + count = 0; + GROW; + if (ctxt->instate == XML_PARSER_EOF) + return(NULL); + } + len += l; + NEXTL(l); + c = CUR_CHAR(l); + } + } + if ((len > XML_MAX_NAME_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "Name"); + return(NULL); + } + if (ctxt->input->cur - ctxt->input->base < len) { + /* + * There were a couple of bugs where PERefs lead to to a change + * of the buffer. Check the buffer size to avoid passing an invalid + * pointer to xmlDictLookup. + */ + xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR, + "unexpected change of input buffer"); + return (NULL); + } + if ((*ctxt->input->cur == '\n') && (ctxt->input->cur[-1] == '\r')) + return(xmlDictLookup(ctxt->dict, ctxt->input->cur - (len + 1), len)); + return(xmlDictLookup(ctxt->dict, ctxt->input->cur - len, len)); +} + +/** + * xmlParseName: + * @ctxt: an XML parser context + * + * parse an XML name. + * + * [4] NameChar ::= Letter | Digit | '.' | '-' | '_' | ':' | + * CombiningChar | Extender + * + * [5] Name ::= (Letter | '_' | ':') (NameChar)* + * + * [6] Names ::= Name (#x20 Name)* + * + * Returns the Name parsed or NULL + */ + +const xmlChar * +xmlParseName(xmlParserCtxtPtr ctxt) { + const xmlChar *in; + const xmlChar *ret; + int count = 0; + + GROW; + +#ifdef DEBUG + nbParseName++; +#endif + + /* + * Accelerator for simple ASCII names + */ + in = ctxt->input->cur; + if (((*in >= 0x61) && (*in <= 0x7A)) || + ((*in >= 0x41) && (*in <= 0x5A)) || + (*in == '_') || (*in == ':')) { + in++; + while (((*in >= 0x61) && (*in <= 0x7A)) || + ((*in >= 0x41) && (*in <= 0x5A)) || + ((*in >= 0x30) && (*in <= 0x39)) || + (*in == '_') || (*in == '-') || + (*in == ':') || (*in == '.')) + in++; + if ((*in > 0) && (*in < 0x80)) { + count = in - ctxt->input->cur; + if ((count > XML_MAX_NAME_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "Name"); + return(NULL); + } + ret = xmlDictLookup(ctxt->dict, ctxt->input->cur, count); + ctxt->input->cur = in; + ctxt->nbChars += count; + ctxt->input->col += count; + if (ret == NULL) + xmlErrMemory(ctxt, NULL); + return(ret); + } + } + /* accelerator for special cases */ + return(xmlParseNameComplex(ctxt)); +} + +static const xmlChar * +xmlParseNCNameComplex(xmlParserCtxtPtr ctxt) { + int len = 0, l; + int c; + int count = 0; + size_t startPosition = 0; + +#ifdef DEBUG + nbParseNCNameComplex++; +#endif + + /* + * Handler for more complex cases + */ + GROW; + startPosition = CUR_PTR - BASE_PTR; + c = CUR_CHAR(l); + if ((c == ' ') || (c == '>') || (c == '/') || /* accelerators */ + (!xmlIsNameStartChar(ctxt, c) || (c == ':'))) { + return(NULL); + } + + while ((c != ' ') && (c != '>') && (c != '/') && /* test bigname.xml */ + (xmlIsNameChar(ctxt, c) && (c != ':'))) { + if (count++ > XML_PARSER_CHUNK_SIZE) { + if ((len > XML_MAX_NAME_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName"); + return(NULL); + } + count = 0; + GROW; + if (ctxt->instate == XML_PARSER_EOF) + return(NULL); + } + len += l; + NEXTL(l); + c = CUR_CHAR(l); + if (c == 0) { + count = 0; + /* + * when shrinking to extend the buffer we really need to preserve + * the part of the name we already parsed. Hence rolling back + * by current length. + */ + ctxt->input->cur -= l; + GROW; + if (ctxt->instate == XML_PARSER_EOF) + return(NULL); + ctxt->input->cur += l; + c = CUR_CHAR(l); + } + } + if ((len > XML_MAX_NAME_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName"); + return(NULL); + } + return(xmlDictLookup(ctxt->dict, (BASE_PTR + startPosition), len)); +} + +/** + * xmlParseNCName: + * @ctxt: an XML parser context + * @len: length of the string parsed + * + * parse an XML name. + * + * [4NS] NCNameChar ::= Letter | Digit | '.' | '-' | '_' | + * CombiningChar | Extender + * + * [5NS] NCName ::= (Letter | '_') (NCNameChar)* + * + * Returns the Name parsed or NULL + */ + +static const xmlChar * +xmlParseNCName(xmlParserCtxtPtr ctxt) { + const xmlChar *in, *e; + const xmlChar *ret; + int count = 0; + +#ifdef DEBUG + nbParseNCName++; +#endif + + /* + * Accelerator for simple ASCII names + */ + in = ctxt->input->cur; + e = ctxt->input->end; + if ((((*in >= 0x61) && (*in <= 0x7A)) || + ((*in >= 0x41) && (*in <= 0x5A)) || + (*in == '_')) && (in < e)) { + in++; + while ((((*in >= 0x61) && (*in <= 0x7A)) || + ((*in >= 0x41) && (*in <= 0x5A)) || + ((*in >= 0x30) && (*in <= 0x39)) || + (*in == '_') || (*in == '-') || + (*in == '.')) && (in < e)) + in++; + if (in >= e) + goto complex; + if ((*in > 0) && (*in < 0x80)) { + count = in - ctxt->input->cur; + if ((count > XML_MAX_NAME_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName"); + return(NULL); + } + ret = xmlDictLookup(ctxt->dict, ctxt->input->cur, count); + ctxt->input->cur = in; + ctxt->nbChars += count; + ctxt->input->col += count; + if (ret == NULL) { + xmlErrMemory(ctxt, NULL); + } + return(ret); + } + } +complex: + return(xmlParseNCNameComplex(ctxt)); +} + +/** + * xmlParseNameAndCompare: + * @ctxt: an XML parser context + * + * parse an XML name and compares for match + * (specialized for endtag parsing) + * + * Returns NULL for an illegal name, (xmlChar*) 1 for success + * and the name for mismatch + */ + +static const xmlChar * +xmlParseNameAndCompare(xmlParserCtxtPtr ctxt, xmlChar const *other) { + register const xmlChar *cmp = other; + register const xmlChar *in; + const xmlChar *ret; + + GROW; + if (ctxt->instate == XML_PARSER_EOF) + return(NULL); + + in = ctxt->input->cur; + while (*in != 0 && *in == *cmp) { + ++in; + ++cmp; + ctxt->input->col++; + } + if (*cmp == 0 && (*in == '>' || IS_BLANK_CH (*in))) { + /* success */ + ctxt->input->cur = in; + return (const xmlChar*) 1; + } + /* failure (or end of input buffer), check with full function */ + ret = xmlParseName (ctxt); + /* strings coming from the dictionary direct compare possible */ + if (ret == other) { + return (const xmlChar*) 1; + } + return ret; +} + +/** + * xmlParseStringName: + * @ctxt: an XML parser context + * @str: a pointer to the string pointer (IN/OUT) + * + * parse an XML name. + * + * [4] NameChar ::= Letter | Digit | '.' | '-' | '_' | ':' | + * CombiningChar | Extender + * + * [5] Name ::= (Letter | '_' | ':') (NameChar)* + * + * [6] Names ::= Name (#x20 Name)* + * + * Returns the Name parsed or NULL. The @str pointer + * is updated to the current location in the string. + */ + +static xmlChar * +xmlParseStringName(xmlParserCtxtPtr ctxt, const xmlChar** str) { + xmlChar buf[XML_MAX_NAMELEN + 5]; + const xmlChar *cur = *str; + int len = 0, l; + int c; + +#ifdef DEBUG + nbParseStringName++; +#endif + + c = CUR_SCHAR(cur, l); + if (!xmlIsNameStartChar(ctxt, c)) { + return(NULL); + } + + COPY_BUF(l,buf,len,c); + cur += l; + c = CUR_SCHAR(cur, l); + while (xmlIsNameChar(ctxt, c)) { + COPY_BUF(l,buf,len,c); + cur += l; + c = CUR_SCHAR(cur, l); + if (len >= XML_MAX_NAMELEN) { /* test bigentname.xml */ + /* + * Okay someone managed to make a huge name, so he's ready to pay + * for the processing speed. + */ + xmlChar *buffer; + int max = len * 2; + + buffer = (xmlChar *) xmlMallocAtomic(max * sizeof(xmlChar)); + if (buffer == NULL) { + xmlErrMemory(ctxt, NULL); + return(NULL); + } + memcpy(buffer, buf, len); + while (xmlIsNameChar(ctxt, c)) { + if (len + 10 > max) { + xmlChar *tmp; + + if ((len > XML_MAX_NAME_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName"); + xmlFree(buffer); + return(NULL); + } + max *= 2; + tmp = (xmlChar *) xmlRealloc(buffer, + max * sizeof(xmlChar)); + if (tmp == NULL) { + xmlErrMemory(ctxt, NULL); + xmlFree(buffer); + return(NULL); + } + buffer = tmp; + } + COPY_BUF(l,buffer,len,c); + cur += l; + c = CUR_SCHAR(cur, l); + } + buffer[len] = 0; + *str = cur; + return(buffer); + } + } + if ((len > XML_MAX_NAME_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName"); + return(NULL); + } + *str = cur; + return(xmlStrndup(buf, len)); +} + +/** + * xmlParseNmtoken: + * @ctxt: an XML parser context + * + * parse an XML Nmtoken. + * + * [7] Nmtoken ::= (NameChar)+ + * + * [8] Nmtokens ::= Nmtoken (#x20 Nmtoken)* + * + * Returns the Nmtoken parsed or NULL + */ + +xmlChar * +xmlParseNmtoken(xmlParserCtxtPtr ctxt) { + xmlChar buf[XML_MAX_NAMELEN + 5]; + int len = 0, l; + int c; + int count = 0; + +#ifdef DEBUG + nbParseNmToken++; +#endif + + GROW; + if (ctxt->instate == XML_PARSER_EOF) + return(NULL); + c = CUR_CHAR(l); + + while (xmlIsNameChar(ctxt, c)) { + if (count++ > XML_PARSER_CHUNK_SIZE) { + count = 0; + GROW; + } + COPY_BUF(l,buf,len,c); + NEXTL(l); + c = CUR_CHAR(l); + if (c == 0) { + count = 0; + GROW; + if (ctxt->instate == XML_PARSER_EOF) + return(NULL); + c = CUR_CHAR(l); + } + if (len >= XML_MAX_NAMELEN) { + /* + * Okay someone managed to make a huge token, so he's ready to pay + * for the processing speed. + */ + xmlChar *buffer; + int max = len * 2; + + buffer = (xmlChar *) xmlMallocAtomic(max * sizeof(xmlChar)); + if (buffer == NULL) { + xmlErrMemory(ctxt, NULL); + return(NULL); + } + memcpy(buffer, buf, len); + while (xmlIsNameChar(ctxt, c)) { + if (count++ > XML_PARSER_CHUNK_SIZE) { + count = 0; + GROW; + if (ctxt->instate == XML_PARSER_EOF) { + xmlFree(buffer); + return(NULL); + } + } + if (len + 10 > max) { + xmlChar *tmp; + + if ((max > XML_MAX_NAME_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NmToken"); + xmlFree(buffer); + return(NULL); + } + max *= 2; + tmp = (xmlChar *) xmlRealloc(buffer, + max * sizeof(xmlChar)); + if (tmp == NULL) { + xmlErrMemory(ctxt, NULL); + xmlFree(buffer); + return(NULL); + } + buffer = tmp; + } + COPY_BUF(l,buffer,len,c); + NEXTL(l); + c = CUR_CHAR(l); + } + buffer[len] = 0; + return(buffer); + } + } + if (len == 0) + return(NULL); + if ((len > XML_MAX_NAME_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NmToken"); + return(NULL); + } + return(xmlStrndup(buf, len)); +} + +/** + * xmlParseEntityValue: + * @ctxt: an XML parser context + * @orig: if non-NULL store a copy of the original entity value + * + * parse a value for ENTITY declarations + * + * [9] EntityValue ::= '"' ([^%&"] | PEReference | Reference)* '"' | + * "'" ([^%&'] | PEReference | Reference)* "'" + * + * Returns the EntityValue parsed with reference substituted or NULL + */ + +xmlChar * +xmlParseEntityValue(xmlParserCtxtPtr ctxt, xmlChar **orig) { + xmlChar *buf = NULL; + int len = 0; + int size = XML_PARSER_BUFFER_SIZE; + int c, l; + xmlChar stop; + xmlChar *ret = NULL; + const xmlChar *cur = NULL; + xmlParserInputPtr input; + + if (RAW == '"') stop = '"'; + else if (RAW == '\'') stop = '\''; + else { + xmlFatalErr(ctxt, XML_ERR_ENTITY_NOT_STARTED, NULL); + return(NULL); + } + buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar)); + if (buf == NULL) { + xmlErrMemory(ctxt, NULL); + return(NULL); + } + + /* + * The content of the entity definition is copied in a buffer. + */ + + ctxt->instate = XML_PARSER_ENTITY_VALUE; + input = ctxt->input; + GROW; + if (ctxt->instate == XML_PARSER_EOF) + goto error; + NEXT; + c = CUR_CHAR(l); + /* + * NOTE: 4.4.5 Included in Literal + * When a parameter entity reference appears in a literal entity + * value, ... a single or double quote character in the replacement + * text is always treated as a normal data character and will not + * terminate the literal. + * In practice it means we stop the loop only when back at parsing + * the initial entity and the quote is found + */ + while (((IS_CHAR(c)) && ((c != stop) || /* checked */ + (ctxt->input != input))) && (ctxt->instate != XML_PARSER_EOF)) { + if (len + 5 >= size) { + xmlChar *tmp; + + size *= 2; + tmp = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar)); + if (tmp == NULL) { + xmlErrMemory(ctxt, NULL); + goto error; + } + buf = tmp; + } + COPY_BUF(l,buf,len,c); + NEXTL(l); + + GROW; + c = CUR_CHAR(l); + if (c == 0) { + GROW; + c = CUR_CHAR(l); + } + } + buf[len] = 0; + if (ctxt->instate == XML_PARSER_EOF) + goto error; + if (c != stop) { + xmlFatalErr(ctxt, XML_ERR_ENTITY_NOT_FINISHED, NULL); + goto error; + } + NEXT; + + /* + * Raise problem w.r.t. '&' and '%' being used in non-entities + * reference constructs. Note Charref will be handled in + * xmlStringDecodeEntities() + */ + cur = buf; + while (*cur != 0) { /* non input consuming */ + if ((*cur == '%') || ((*cur == '&') && (cur[1] != '#'))) { + xmlChar *name; + xmlChar tmp = *cur; + int nameOk = 0; + + cur++; + name = xmlParseStringName(ctxt, &cur); + if (name != NULL) { + nameOk = 1; + xmlFree(name); + } + if ((nameOk == 0) || (*cur != ';')) { + xmlFatalErrMsgInt(ctxt, XML_ERR_ENTITY_CHAR_ERROR, + "EntityValue: '%c' forbidden except for entities references\n", + tmp); + goto error; + } + if ((tmp == '%') && (ctxt->inSubset == 1) && + (ctxt->inputNr == 1)) { + xmlFatalErr(ctxt, XML_ERR_ENTITY_PE_INTERNAL, NULL); + goto error; + } + if (*cur == 0) + break; + } + cur++; + } + + /* + * Then PEReference entities are substituted. + * + * NOTE: 4.4.7 Bypassed + * When a general entity reference appears in the EntityValue in + * an entity declaration, it is bypassed and left as is. + * so XML_SUBSTITUTE_REF is not set here. + */ + ++ctxt->depth; + ret = xmlStringDecodeEntities(ctxt, buf, XML_SUBSTITUTE_PEREF, + 0, 0, 0); + --ctxt->depth; + if (orig != NULL) { + *orig = buf; + buf = NULL; + } + +error: + if (buf != NULL) + xmlFree(buf); + return(ret); +} + +/** + * xmlParseAttValueComplex: + * @ctxt: an XML parser context + * @len: the resulting attribute len + * @normalize: whether to apply the inner normalization + * + * parse a value for an attribute, this is the fallback function + * of xmlParseAttValue() when the attribute parsing requires handling + * of non-ASCII characters, or normalization compaction. + * + * Returns the AttValue parsed or NULL. The value has to be freed by the caller. + */ +static xmlChar * +xmlParseAttValueComplex(xmlParserCtxtPtr ctxt, int *attlen, int normalize) { + xmlChar limit = 0; + xmlChar *buf = NULL; + xmlChar *rep = NULL; + size_t len = 0; + size_t buf_size = 0; + int c, l, in_space = 0; + xmlChar *current = NULL; + xmlEntityPtr ent; + + if (NXT(0) == '"') { + ctxt->instate = XML_PARSER_ATTRIBUTE_VALUE; + limit = '"'; + NEXT; + } else if (NXT(0) == '\'') { + limit = '\''; + ctxt->instate = XML_PARSER_ATTRIBUTE_VALUE; + NEXT; + } else { + xmlFatalErr(ctxt, XML_ERR_ATTRIBUTE_NOT_STARTED, NULL); + return(NULL); + } + + /* + * allocate a translation buffer. + */ + buf_size = XML_PARSER_BUFFER_SIZE; + buf = (xmlChar *) xmlMallocAtomic(buf_size); + if (buf == NULL) goto mem_error; + + /* + * OK loop until we reach one of the ending char or a size limit. + */ + c = CUR_CHAR(l); + while (((NXT(0) != limit) && /* checked */ + (IS_CHAR(c)) && (c != '<')) && + (ctxt->instate != XML_PARSER_EOF)) { + /* + * Impose a reasonable limit on attribute size, unless XML_PARSE_HUGE + * special option is given + */ + if ((len > XML_MAX_TEXT_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED, + "AttValue length too long\n"); + goto mem_error; + } + if (c == 0) break; + if (c == '&') { + in_space = 0; + if (NXT(1) == '#') { + int val = xmlParseCharRef(ctxt); + + if (val == '&') { + if (ctxt->replaceEntities) { + if (len + 10 > buf_size) { + growBuffer(buf, 10); + } + buf[len++] = '&'; + } else { + /* + * The reparsing will be done in xmlStringGetNodeList() + * called by the attribute() function in SAX.c + */ + if (len + 10 > buf_size) { + growBuffer(buf, 10); + } + buf[len++] = '&'; + buf[len++] = '#'; + buf[len++] = '3'; + buf[len++] = '8'; + buf[len++] = ';'; + } + } else if (val != 0) { + if (len + 10 > buf_size) { + growBuffer(buf, 10); + } + len += xmlCopyChar(0, &buf[len], val); + } + } else { + ent = xmlParseEntityRef(ctxt); + ctxt->nbentities++; + if (ent != NULL) + ctxt->nbentities += ent->owner; + if ((ent != NULL) && + (ent->etype == XML_INTERNAL_PREDEFINED_ENTITY)) { + if (len + 10 > buf_size) { + growBuffer(buf, 10); + } + if ((ctxt->replaceEntities == 0) && + (ent->content[0] == '&')) { + buf[len++] = '&'; + buf[len++] = '#'; + buf[len++] = '3'; + buf[len++] = '8'; + buf[len++] = ';'; + } else { + buf[len++] = ent->content[0]; + } + } else if ((ent != NULL) && + (ctxt->replaceEntities != 0)) { + if (ent->etype != XML_INTERNAL_PREDEFINED_ENTITY) { + ++ctxt->depth; + rep = xmlStringDecodeEntities(ctxt, ent->content, + XML_SUBSTITUTE_REF, + 0, 0, 0); + --ctxt->depth; + if (rep != NULL) { + current = rep; + while (*current != 0) { /* non input consuming */ + if ((*current == 0xD) || (*current == 0xA) || + (*current == 0x9)) { + buf[len++] = 0x20; + current++; + } else + buf[len++] = *current++; + if (len + 10 > buf_size) { + growBuffer(buf, 10); + } + } + xmlFree(rep); + rep = NULL; + } + } else { + if (len + 10 > buf_size) { + growBuffer(buf, 10); + } + if (ent->content != NULL) + buf[len++] = ent->content[0]; + } + } else if (ent != NULL) { + int i = xmlStrlen(ent->name); + const xmlChar *cur = ent->name; + + /* + * This may look absurd but is needed to detect + * entities problems + */ + if ((ent->etype != XML_INTERNAL_PREDEFINED_ENTITY) && + (ent->content != NULL) && (ent->checked == 0)) { + unsigned long oldnbent = ctxt->nbentities, diff; + + ++ctxt->depth; + rep = xmlStringDecodeEntities(ctxt, ent->content, + XML_SUBSTITUTE_REF, 0, 0, 0); + --ctxt->depth; + + diff = ctxt->nbentities - oldnbent + 1; + if (diff > INT_MAX / 2) + diff = INT_MAX / 2; + ent->checked = diff * 2; + if (rep != NULL) { + if (xmlStrchr(rep, '<')) + ent->checked |= 1; + xmlFree(rep); + rep = NULL; + } else { + ent->content[0] = 0; + } + } + + /* + * Just output the reference + */ + buf[len++] = '&'; + while (len + i + 10 > buf_size) { + growBuffer(buf, i + 10); + } + for (;i > 0;i--) + buf[len++] = *cur++; + buf[len++] = ';'; + } + } + } else { + if ((c == 0x20) || (c == 0xD) || (c == 0xA) || (c == 0x9)) { + if ((len != 0) || (!normalize)) { + if ((!normalize) || (!in_space)) { + COPY_BUF(l,buf,len,0x20); + while (len + 10 > buf_size) { + growBuffer(buf, 10); + } + } + in_space = 1; + } + } else { + in_space = 0; + COPY_BUF(l,buf,len,c); + if (len + 10 > buf_size) { + growBuffer(buf, 10); + } + } + NEXTL(l); + } + GROW; + c = CUR_CHAR(l); + } + if (ctxt->instate == XML_PARSER_EOF) + goto error; + + if ((in_space) && (normalize)) { + while ((len > 0) && (buf[len - 1] == 0x20)) len--; + } + buf[len] = 0; + if (RAW == '<') { + xmlFatalErr(ctxt, XML_ERR_LT_IN_ATTRIBUTE, NULL); + } else if (RAW != limit) { + if ((c != 0) && (!IS_CHAR(c))) { + xmlFatalErrMsg(ctxt, XML_ERR_INVALID_CHAR, + "invalid character in attribute value\n"); + } else { + xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED, + "AttValue: ' expected\n"); + } + } else + NEXT; + + /* + * There we potentially risk an overflow, don't allow attribute value of + * length more than INT_MAX it is a very reasonable assumption ! + */ + if (len >= INT_MAX) { + xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED, + "AttValue length too long\n"); + goto mem_error; + } + + if (attlen != NULL) *attlen = (int) len; + return(buf); + +mem_error: + xmlErrMemory(ctxt, NULL); +error: + if (buf != NULL) + xmlFree(buf); + if (rep != NULL) + xmlFree(rep); + return(NULL); +} + +/** + * xmlParseAttValue: + * @ctxt: an XML parser context + * + * parse a value for an attribute + * Note: the parser won't do substitution of entities here, this + * will be handled later in xmlStringGetNodeList + * + * [10] AttValue ::= '"' ([^<&"] | Reference)* '"' | + * "'" ([^<&'] | Reference)* "'" + * + * 3.3.3 Attribute-Value Normalization: + * Before the value of an attribute is passed to the application or + * checked for validity, the XML processor must normalize it as follows: + * - a character reference is processed by appending the referenced + * character to the attribute value + * - an entity reference is processed by recursively processing the + * replacement text of the entity + * - a whitespace character (#x20, #xD, #xA, #x9) is processed by + * appending #x20 to the normalized value, except that only a single + * #x20 is appended for a "#xD#xA" sequence that is part of an external + * parsed entity or the literal entity value of an internal parsed entity + * - other characters are processed by appending them to the normalized value + * If the declared value is not CDATA, then the XML processor must further + * process the normalized attribute value by discarding any leading and + * trailing space (#x20) characters, and by replacing sequences of space + * (#x20) characters by a single space (#x20) character. + * All attributes for which no declaration has been read should be treated + * by a non-validating parser as if declared CDATA. + * + * Returns the AttValue parsed or NULL. The value has to be freed by the caller. + */ + + +xmlChar * +xmlParseAttValue(xmlParserCtxtPtr ctxt) { + if ((ctxt == NULL) || (ctxt->input == NULL)) return(NULL); + return(xmlParseAttValueInternal(ctxt, NULL, NULL, 0)); +} + +/** + * xmlParseSystemLiteral: + * @ctxt: an XML parser context + * + * parse an XML Literal + * + * [11] SystemLiteral ::= ('"' [^"]* '"') | ("'" [^']* "'") + * + * Returns the SystemLiteral parsed or NULL + */ + +xmlChar * +xmlParseSystemLiteral(xmlParserCtxtPtr ctxt) { + xmlChar *buf = NULL; + int len = 0; + int size = XML_PARSER_BUFFER_SIZE; + int cur, l; + xmlChar stop; + int state = ctxt->instate; + int count = 0; + + SHRINK; + if (RAW == '"') { + NEXT; + stop = '"'; + } else if (RAW == '\'') { + NEXT; + stop = '\''; + } else { + xmlFatalErr(ctxt, XML_ERR_LITERAL_NOT_STARTED, NULL); + return(NULL); + } + + buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar)); + if (buf == NULL) { + xmlErrMemory(ctxt, NULL); + return(NULL); + } + ctxt->instate = XML_PARSER_SYSTEM_LITERAL; + cur = CUR_CHAR(l); + while ((IS_CHAR(cur)) && (cur != stop)) { /* checked */ + if (len + 5 >= size) { + xmlChar *tmp; + + if ((size > XML_MAX_NAME_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "SystemLiteral"); + xmlFree(buf); + ctxt->instate = (xmlParserInputState) state; + return(NULL); + } + size *= 2; + tmp = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar)); + if (tmp == NULL) { + xmlFree(buf); + xmlErrMemory(ctxt, NULL); + ctxt->instate = (xmlParserInputState) state; + return(NULL); + } + buf = tmp; + } + count++; + if (count > 50) { + GROW; + count = 0; + if (ctxt->instate == XML_PARSER_EOF) { + xmlFree(buf); + return(NULL); + } + } + COPY_BUF(l,buf,len,cur); + NEXTL(l); + cur = CUR_CHAR(l); + if (cur == 0) { + GROW; + SHRINK; + cur = CUR_CHAR(l); + } + } + buf[len] = 0; + ctxt->instate = (xmlParserInputState) state; + if (!IS_CHAR(cur)) { + xmlFatalErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED, NULL); + } else { + NEXT; + } + return(buf); +} + +/** + * xmlParsePubidLiteral: + * @ctxt: an XML parser context + * + * parse an XML public literal + * + * [12] PubidLiteral ::= '"' PubidChar* '"' | "'" (PubidChar - "'")* "'" + * + * Returns the PubidLiteral parsed or NULL. + */ + +xmlChar * +xmlParsePubidLiteral(xmlParserCtxtPtr ctxt) { + xmlChar *buf = NULL; + int len = 0; + int size = XML_PARSER_BUFFER_SIZE; + xmlChar cur; + xmlChar stop; + int count = 0; + xmlParserInputState oldstate = ctxt->instate; + + SHRINK; + if (RAW == '"') { + NEXT; + stop = '"'; + } else if (RAW == '\'') { + NEXT; + stop = '\''; + } else { + xmlFatalErr(ctxt, XML_ERR_LITERAL_NOT_STARTED, NULL); + return(NULL); + } + buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar)); + if (buf == NULL) { + xmlErrMemory(ctxt, NULL); + return(NULL); + } + ctxt->instate = XML_PARSER_PUBLIC_LITERAL; + cur = CUR; + while ((IS_PUBIDCHAR_CH(cur)) && (cur != stop)) { /* checked */ + if (len + 1 >= size) { + xmlChar *tmp; + + if ((size > XML_MAX_NAME_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "Public ID"); + xmlFree(buf); + return(NULL); + } + size *= 2; + tmp = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar)); + if (tmp == NULL) { + xmlErrMemory(ctxt, NULL); + xmlFree(buf); + return(NULL); + } + buf = tmp; + } + buf[len++] = cur; + count++; + if (count > 50) { + GROW; + count = 0; + if (ctxt->instate == XML_PARSER_EOF) { + xmlFree(buf); + return(NULL); + } + } + NEXT; + cur = CUR; + if (cur == 0) { + GROW; + SHRINK; + cur = CUR; + } + } + buf[len] = 0; + if (cur != stop) { + xmlFatalErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED, NULL); + } else { + NEXT; + } + ctxt->instate = oldstate; + return(buf); +} + +static void xmlParseCharDataComplex(xmlParserCtxtPtr ctxt, int cdata); + +/* + * used for the test in the inner loop of the char data testing + */ +static const unsigned char test_char_data[256] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x9, CR/LF separated */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x00, 0x27, /* & */ + 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, + 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, + 0x38, 0x39, 0x3A, 0x3B, 0x00, 0x3D, 0x3E, 0x3F, /* < */ + 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, + 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, + 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, + 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x00, 0x5E, 0x5F, /* ] */ + 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, + 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, + 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, + 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* non-ascii */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 +}; + +/** + * xmlParseCharData: + * @ctxt: an XML parser context + * @cdata: int indicating whether we are within a CDATA section + * + * parse a CharData section. + * if we are within a CDATA section ']]>' marks an end of section. + * + * The right angle bracket (>) may be represented using the string ">", + * and must, for compatibility, be escaped using ">" or a character + * reference when it appears in the string "]]>" in content, when that + * string is not marking the end of a CDATA section. + * + * [14] CharData ::= [^<&]* - ([^<&]* ']]>' [^<&]*) + */ + +void +xmlParseCharData(xmlParserCtxtPtr ctxt, int cdata) { + const xmlChar *in; + int nbchar = 0; + int line = ctxt->input->line; + int col = ctxt->input->col; + int ccol; + + SHRINK; + GROW; + /* + * Accelerated common case where input don't need to be + * modified before passing it to the handler. + */ + if (!cdata) { + in = ctxt->input->cur; + do { +get_more_space: + while (*in == 0x20) { in++; ctxt->input->col++; } + if (*in == 0xA) { + do { + ctxt->input->line++; ctxt->input->col = 1; + in++; + } while (*in == 0xA); + goto get_more_space; + } + if (*in == '<') { + nbchar = in - ctxt->input->cur; + if (nbchar > 0) { + const xmlChar *tmp = ctxt->input->cur; + ctxt->input->cur = in; + + if ((ctxt->sax != NULL) && + (ctxt->sax->ignorableWhitespace != + ctxt->sax->characters)) { + if (areBlanks(ctxt, tmp, nbchar, 1)) { + if (ctxt->sax->ignorableWhitespace != NULL) + ctxt->sax->ignorableWhitespace(ctxt->userData, + tmp, nbchar); + } else { + if (ctxt->sax->characters != NULL) + ctxt->sax->characters(ctxt->userData, + tmp, nbchar); + if (*ctxt->space == -1) + *ctxt->space = -2; + } + } else if ((ctxt->sax != NULL) && + (ctxt->sax->characters != NULL)) { + ctxt->sax->characters(ctxt->userData, + tmp, nbchar); + } + } + return; + } + +get_more: + ccol = ctxt->input->col; + while (test_char_data[*in]) { + in++; + ccol++; + } + ctxt->input->col = ccol; + if (*in == 0xA) { + do { + ctxt->input->line++; ctxt->input->col = 1; + in++; + } while (*in == 0xA); + goto get_more; + } + if (*in == ']') { + if ((in[1] == ']') && (in[2] == '>')) { + xmlFatalErr(ctxt, XML_ERR_MISPLACED_CDATA_END, NULL); + ctxt->input->cur = in + 1; + return; + } + in++; + ctxt->input->col++; + goto get_more; + } + nbchar = in - ctxt->input->cur; + if (nbchar > 0) { + if ((ctxt->sax != NULL) && + (ctxt->sax->ignorableWhitespace != + ctxt->sax->characters) && + (IS_BLANK_CH(*ctxt->input->cur))) { + const xmlChar *tmp = ctxt->input->cur; + ctxt->input->cur = in; + + if (areBlanks(ctxt, tmp, nbchar, 0)) { + if (ctxt->sax->ignorableWhitespace != NULL) + ctxt->sax->ignorableWhitespace(ctxt->userData, + tmp, nbchar); + } else { + if (ctxt->sax->characters != NULL) + ctxt->sax->characters(ctxt->userData, + tmp, nbchar); + if (*ctxt->space == -1) + *ctxt->space = -2; + } + line = ctxt->input->line; + col = ctxt->input->col; + } else if (ctxt->sax != NULL) { + if (ctxt->sax->characters != NULL) + ctxt->sax->characters(ctxt->userData, + ctxt->input->cur, nbchar); + line = ctxt->input->line; + col = ctxt->input->col; + } + /* something really bad happened in the SAX callback */ + if (ctxt->instate != XML_PARSER_CONTENT) + return; + } + ctxt->input->cur = in; + if (*in == 0xD) { + in++; + if (*in == 0xA) { + ctxt->input->cur = in; + in++; + ctxt->input->line++; ctxt->input->col = 1; + continue; /* while */ + } + in--; + } + if (*in == '<') { + return; + } + if (*in == '&') { + return; + } + SHRINK; + GROW; + if (ctxt->instate == XML_PARSER_EOF) + return; + in = ctxt->input->cur; + } while (((*in >= 0x20) && (*in <= 0x7F)) || (*in == 0x09)); + nbchar = 0; + } + ctxt->input->line = line; + ctxt->input->col = col; + xmlParseCharDataComplex(ctxt, cdata); +} + +/** + * xmlParseCharDataComplex: + * @ctxt: an XML parser context + * @cdata: int indicating whether we are within a CDATA section + * + * parse a CharData section.this is the fallback function + * of xmlParseCharData() when the parsing requires handling + * of non-ASCII characters. + */ +static void +xmlParseCharDataComplex(xmlParserCtxtPtr ctxt, int cdata) { + xmlChar buf[XML_PARSER_BIG_BUFFER_SIZE + 5]; + int nbchar = 0; + int cur, l; + int count = 0; + + SHRINK; + GROW; + cur = CUR_CHAR(l); + while ((cur != '<') && /* checked */ + (cur != '&') && + (IS_CHAR(cur))) /* test also done in xmlCurrentChar() */ { + if ((cur == ']') && (NXT(1) == ']') && + (NXT(2) == '>')) { + if (cdata) break; + else { + xmlFatalErr(ctxt, XML_ERR_MISPLACED_CDATA_END, NULL); + } + } + COPY_BUF(l,buf,nbchar,cur); + if (nbchar >= XML_PARSER_BIG_BUFFER_SIZE) { + buf[nbchar] = 0; + + /* + * OK the segment is to be consumed as chars. + */ + if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) { + if (areBlanks(ctxt, buf, nbchar, 0)) { + if (ctxt->sax->ignorableWhitespace != NULL) + ctxt->sax->ignorableWhitespace(ctxt->userData, + buf, nbchar); + } else { + if (ctxt->sax->characters != NULL) + ctxt->sax->characters(ctxt->userData, buf, nbchar); + if ((ctxt->sax->characters != + ctxt->sax->ignorableWhitespace) && + (*ctxt->space == -1)) + *ctxt->space = -2; + } + } + nbchar = 0; + /* something really bad happened in the SAX callback */ + if (ctxt->instate != XML_PARSER_CONTENT) + return; + } + count++; + if (count > 50) { + GROW; + count = 0; + if (ctxt->instate == XML_PARSER_EOF) + return; + } + NEXTL(l); + cur = CUR_CHAR(l); + } + if (nbchar != 0) { + buf[nbchar] = 0; + /* + * OK the segment is to be consumed as chars. + */ + if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) { + if (areBlanks(ctxt, buf, nbchar, 0)) { + if (ctxt->sax->ignorableWhitespace != NULL) + ctxt->sax->ignorableWhitespace(ctxt->userData, buf, nbchar); + } else { + if (ctxt->sax->characters != NULL) + ctxt->sax->characters(ctxt->userData, buf, nbchar); + if ((ctxt->sax->characters != ctxt->sax->ignorableWhitespace) && + (*ctxt->space == -1)) + *ctxt->space = -2; + } + } + } + if ((cur != 0) && (!IS_CHAR(cur))) { + /* Generate the error and skip the offending character */ + xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR, + "PCDATA invalid Char value %d\n", + cur); + NEXTL(l); + } +} + +/** + * xmlParseExternalID: + * @ctxt: an XML parser context + * @publicID: a xmlChar** receiving PubidLiteral + * @strict: indicate whether we should restrict parsing to only + * production [75], see NOTE below + * + * Parse an External ID or a Public ID + * + * NOTE: Productions [75] and [83] interact badly since [75] can generate + * 'PUBLIC' S PubidLiteral S SystemLiteral + * + * [75] ExternalID ::= 'SYSTEM' S SystemLiteral + * | 'PUBLIC' S PubidLiteral S SystemLiteral + * + * [83] PublicID ::= 'PUBLIC' S PubidLiteral + * + * Returns the function returns SystemLiteral and in the second + * case publicID receives PubidLiteral, is strict is off + * it is possible to return NULL and have publicID set. + */ + +xmlChar * +xmlParseExternalID(xmlParserCtxtPtr ctxt, xmlChar **publicID, int strict) { + xmlChar *URI = NULL; + + SHRINK; + + *publicID = NULL; + if (CMP6(CUR_PTR, 'S', 'Y', 'S', 'T', 'E', 'M')) { + SKIP(6); + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space required after 'SYSTEM'\n"); + } + URI = xmlParseSystemLiteral(ctxt); + if (URI == NULL) { + xmlFatalErr(ctxt, XML_ERR_URI_REQUIRED, NULL); + } + } else if (CMP6(CUR_PTR, 'P', 'U', 'B', 'L', 'I', 'C')) { + SKIP(6); + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space required after 'PUBLIC'\n"); + } + *publicID = xmlParsePubidLiteral(ctxt); + if (*publicID == NULL) { + xmlFatalErr(ctxt, XML_ERR_PUBID_REQUIRED, NULL); + } + if (strict) { + /* + * We don't handle [83] so "S SystemLiteral" is required. + */ + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space required after the Public Identifier\n"); + } + } else { + /* + * We handle [83] so we return immediately, if + * "S SystemLiteral" is not detected. We skip blanks if no + * system literal was found, but this is harmless since we must + * be at the end of a NotationDecl. + */ + if (SKIP_BLANKS == 0) return(NULL); + if ((CUR != '\'') && (CUR != '"')) return(NULL); + } + URI = xmlParseSystemLiteral(ctxt); + if (URI == NULL) { + xmlFatalErr(ctxt, XML_ERR_URI_REQUIRED, NULL); + } + } + return(URI); +} + +/** + * xmlParseCommentComplex: + * @ctxt: an XML parser context + * @buf: the already parsed part of the buffer + * @len: number of bytes in the buffer + * @size: allocated size of the buffer + * + * Skip an XML (SGML) comment <!-- .... --> + * The spec says that "For compatibility, the string "--" (double-hyphen) + * must not occur within comments. " + * This is the slow routine in case the accelerator for ascii didn't work + * + * [15] Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->' + */ +static void +xmlParseCommentComplex(xmlParserCtxtPtr ctxt, xmlChar *buf, + size_t len, size_t size) { + int q, ql; + int r, rl; + int cur, l; + size_t count = 0; + int inputid; + + inputid = ctxt->input->id; + + if (buf == NULL) { + len = 0; + size = XML_PARSER_BUFFER_SIZE; + buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar)); + if (buf == NULL) { + xmlErrMemory(ctxt, NULL); + return; + } + } + GROW; /* Assure there's enough input data */ + q = CUR_CHAR(ql); + if (q == 0) + goto not_terminated; + if (!IS_CHAR(q)) { + xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR, + "xmlParseComment: invalid xmlChar value %d\n", + q); + xmlFree (buf); + return; + } + NEXTL(ql); + r = CUR_CHAR(rl); + if (r == 0) + goto not_terminated; + if (!IS_CHAR(r)) { + xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR, + "xmlParseComment: invalid xmlChar value %d\n", + q); + xmlFree (buf); + return; + } + NEXTL(rl); + cur = CUR_CHAR(l); + if (cur == 0) + goto not_terminated; + while (IS_CHAR(cur) && /* checked */ + ((cur != '>') || + (r != '-') || (q != '-'))) { + if ((r == '-') && (q == '-')) { + xmlFatalErr(ctxt, XML_ERR_HYPHEN_IN_COMMENT, NULL); + } + if ((len > XML_MAX_TEXT_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErrMsgStr(ctxt, XML_ERR_COMMENT_NOT_FINISHED, + "Comment too big found", NULL); + xmlFree (buf); + return; + } + if (len + 5 >= size) { + xmlChar *new_buf; + size_t new_size; + + new_size = size * 2; + new_buf = (xmlChar *) xmlRealloc(buf, new_size); + if (new_buf == NULL) { + xmlFree (buf); + xmlErrMemory(ctxt, NULL); + return; + } + buf = new_buf; + size = new_size; + } + COPY_BUF(ql,buf,len,q); + q = r; + ql = rl; + r = cur; + rl = l; + + count++; + if (count > 50) { + GROW; + count = 0; + if (ctxt->instate == XML_PARSER_EOF) { + xmlFree(buf); + return; + } + } + NEXTL(l); + cur = CUR_CHAR(l); + if (cur == 0) { + SHRINK; + GROW; + cur = CUR_CHAR(l); + } + } + buf[len] = 0; + if (cur == 0) { + xmlFatalErrMsgStr(ctxt, XML_ERR_COMMENT_NOT_FINISHED, + "Comment not terminated \n<!--%.50s\n", buf); + } else if (!IS_CHAR(cur)) { + xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR, + "xmlParseComment: invalid xmlChar value %d\n", + cur); + } else { + if (inputid != ctxt->input->id) { + xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY, + "Comment doesn't start and stop in the same" + " entity\n"); + } + NEXT; + if ((ctxt->sax != NULL) && (ctxt->sax->comment != NULL) && + (!ctxt->disableSAX)) + ctxt->sax->comment(ctxt->userData, buf); + } + xmlFree(buf); + return; +not_terminated: + xmlFatalErrMsgStr(ctxt, XML_ERR_COMMENT_NOT_FINISHED, + "Comment not terminated\n", NULL); + xmlFree(buf); + return; +} + +/** + * xmlParseComment: + * @ctxt: an XML parser context + * + * Skip an XML (SGML) comment <!-- .... --> + * The spec says that "For compatibility, the string "--" (double-hyphen) + * must not occur within comments. " + * + * [15] Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->' + */ +void +xmlParseComment(xmlParserCtxtPtr ctxt) { + xmlChar *buf = NULL; + size_t size = XML_PARSER_BUFFER_SIZE; + size_t len = 0; + xmlParserInputState state; + const xmlChar *in; + size_t nbchar = 0; + int ccol; + int inputid; + + /* + * Check that there is a comment right here. + */ + if ((RAW != '<') || (NXT(1) != '!') || + (NXT(2) != '-') || (NXT(3) != '-')) return; + state = ctxt->instate; + ctxt->instate = XML_PARSER_COMMENT; + inputid = ctxt->input->id; + SKIP(4); + SHRINK; + GROW; + + /* + * Accelerated common case where input don't need to be + * modified before passing it to the handler. + */ + in = ctxt->input->cur; + do { + if (*in == 0xA) { + do { + ctxt->input->line++; ctxt->input->col = 1; + in++; + } while (*in == 0xA); + } +get_more: + ccol = ctxt->input->col; + while (((*in > '-') && (*in <= 0x7F)) || + ((*in >= 0x20) && (*in < '-')) || + (*in == 0x09)) { + in++; + ccol++; + } + ctxt->input->col = ccol; + if (*in == 0xA) { + do { + ctxt->input->line++; ctxt->input->col = 1; + in++; + } while (*in == 0xA); + goto get_more; + } + nbchar = in - ctxt->input->cur; + /* + * save current set of data + */ + if (nbchar > 0) { + if ((ctxt->sax != NULL) && + (ctxt->sax->comment != NULL)) { + if (buf == NULL) { + if ((*in == '-') && (in[1] == '-')) + size = nbchar + 1; + else + size = XML_PARSER_BUFFER_SIZE + nbchar; + buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar)); + if (buf == NULL) { + xmlErrMemory(ctxt, NULL); + ctxt->instate = state; + return; + } + len = 0; + } else if (len + nbchar + 1 >= size) { + xmlChar *new_buf; + size += len + nbchar + XML_PARSER_BUFFER_SIZE; + new_buf = (xmlChar *) xmlRealloc(buf, + size * sizeof(xmlChar)); + if (new_buf == NULL) { + xmlFree (buf); + xmlErrMemory(ctxt, NULL); + ctxt->instate = state; + return; + } + buf = new_buf; + } + memcpy(&buf[len], ctxt->input->cur, nbchar); + len += nbchar; + buf[len] = 0; + } + } + if ((len > XML_MAX_TEXT_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErrMsgStr(ctxt, XML_ERR_COMMENT_NOT_FINISHED, + "Comment too big found", NULL); + xmlFree (buf); + return; + } + ctxt->input->cur = in; + if (*in == 0xA) { + in++; + ctxt->input->line++; ctxt->input->col = 1; + } + if (*in == 0xD) { + in++; + if (*in == 0xA) { + ctxt->input->cur = in; + in++; + ctxt->input->line++; ctxt->input->col = 1; + continue; /* while */ + } + in--; + } + SHRINK; + GROW; + if (ctxt->instate == XML_PARSER_EOF) { + xmlFree(buf); + return; + } + in = ctxt->input->cur; + if (*in == '-') { + if (in[1] == '-') { + if (in[2] == '>') { + if (ctxt->input->id != inputid) { + xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY, + "comment doesn't start and stop in the" + " same entity\n"); + } + SKIP(3); + if ((ctxt->sax != NULL) && (ctxt->sax->comment != NULL) && + (!ctxt->disableSAX)) { + if (buf != NULL) + ctxt->sax->comment(ctxt->userData, buf); + else + ctxt->sax->comment(ctxt->userData, BAD_CAST ""); + } + if (buf != NULL) + xmlFree(buf); + if (ctxt->instate != XML_PARSER_EOF) + ctxt->instate = state; + return; + } + if (buf != NULL) { + xmlFatalErrMsgStr(ctxt, XML_ERR_HYPHEN_IN_COMMENT, + "Double hyphen within comment: " + "<!--%.50s\n", + buf); + } else + xmlFatalErrMsgStr(ctxt, XML_ERR_HYPHEN_IN_COMMENT, + "Double hyphen within comment\n", NULL); + if (ctxt->instate == XML_PARSER_EOF) { + xmlFree(buf); + return; + } + in++; + ctxt->input->col++; + } + in++; + ctxt->input->col++; + goto get_more; + } + } while (((*in >= 0x20) && (*in <= 0x7F)) || (*in == 0x09)); + xmlParseCommentComplex(ctxt, buf, len, size); + ctxt->instate = state; + return; +} + + +/** + * xmlParsePITarget: + * @ctxt: an XML parser context + * + * parse the name of a PI + * + * [17] PITarget ::= Name - (('X' | 'x') ('M' | 'm') ('L' | 'l')) + * + * Returns the PITarget name or NULL + */ + +const xmlChar * +xmlParsePITarget(xmlParserCtxtPtr ctxt) { + const xmlChar *name; + + name = xmlParseName(ctxt); + if ((name != NULL) && + ((name[0] == 'x') || (name[0] == 'X')) && + ((name[1] == 'm') || (name[1] == 'M')) && + ((name[2] == 'l') || (name[2] == 'L'))) { + int i; + if ((name[0] == 'x') && (name[1] == 'm') && + (name[2] == 'l') && (name[3] == 0)) { + xmlFatalErrMsg(ctxt, XML_ERR_RESERVED_XML_NAME, + "XML declaration allowed only at the start of the document\n"); + return(name); + } else if (name[3] == 0) { + xmlFatalErr(ctxt, XML_ERR_RESERVED_XML_NAME, NULL); + return(name); + } + for (i = 0;;i++) { + if (xmlW3CPIs[i] == NULL) break; + if (xmlStrEqual(name, (const xmlChar *)xmlW3CPIs[i])) + return(name); + } + xmlWarningMsg(ctxt, XML_ERR_RESERVED_XML_NAME, + "xmlParsePITarget: invalid name prefix 'xml'\n", + NULL, NULL); + } + if ((name != NULL) && (xmlStrchr(name, ':') != NULL)) { + xmlNsErr(ctxt, XML_NS_ERR_COLON, + "colons are forbidden from PI names '%s'\n", name, NULL, NULL); + } + return(name); +} + +#ifdef LIBXML_CATALOG_ENABLED +/** + * xmlParseCatalogPI: + * @ctxt: an XML parser context + * @catalog: the PI value string + * + * parse an XML Catalog Processing Instruction. + * + * <?oasis-xml-catalog catalog="http://example.com/catalog.xml"?> + * + * Occurs only if allowed by the user and if happening in the Misc + * part of the document before any doctype informations + * This will add the given catalog to the parsing context in order + * to be used if there is a resolution need further down in the document + */ + +static void +xmlParseCatalogPI(xmlParserCtxtPtr ctxt, const xmlChar *catalog) { + xmlChar *URL = NULL; + const xmlChar *tmp, *base; + xmlChar marker; + + tmp = catalog; + while (IS_BLANK_CH(*tmp)) tmp++; + if (xmlStrncmp(tmp, BAD_CAST"catalog", 7)) + goto error; + tmp += 7; + while (IS_BLANK_CH(*tmp)) tmp++; + if (*tmp != '=') { + return; + } + tmp++; + while (IS_BLANK_CH(*tmp)) tmp++; + marker = *tmp; + if ((marker != '\'') && (marker != '"')) + goto error; + tmp++; + base = tmp; + while ((*tmp != 0) && (*tmp != marker)) tmp++; + if (*tmp == 0) + goto error; + URL = xmlStrndup(base, tmp - base); + tmp++; + while (IS_BLANK_CH(*tmp)) tmp++; + if (*tmp != 0) + goto error; + + if (URL != NULL) { + ctxt->catalogs = xmlCatalogAddLocal(ctxt->catalogs, URL); + xmlFree(URL); + } + return; + +error: + xmlWarningMsg(ctxt, XML_WAR_CATALOG_PI, + "Catalog PI syntax error: %s\n", + catalog, NULL); + if (URL != NULL) + xmlFree(URL); +} +#endif + +/** + * xmlParsePI: + * @ctxt: an XML parser context + * + * parse an XML Processing Instruction. + * + * [16] PI ::= '<?' PITarget (S (Char* - (Char* '?>' Char*)))? '?>' + * + * The processing is transferred to SAX once parsed. + */ + +void +xmlParsePI(xmlParserCtxtPtr ctxt) { + xmlChar *buf = NULL; + size_t len = 0; + size_t size = XML_PARSER_BUFFER_SIZE; + int cur, l; + const xmlChar *target; + xmlParserInputState state; + int count = 0; + + if ((RAW == '<') && (NXT(1) == '?')) { + int inputid = ctxt->input->id; + state = ctxt->instate; + ctxt->instate = XML_PARSER_PI; + /* + * this is a Processing Instruction. + */ + SKIP(2); + SHRINK; + + /* + * Parse the target name and check for special support like + * namespace. + */ + target = xmlParsePITarget(ctxt); + if (target != NULL) { + if ((RAW == '?') && (NXT(1) == '>')) { + if (inputid != ctxt->input->id) { + xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY, + "PI declaration doesn't start and stop in" + " the same entity\n"); + } + SKIP(2); + + /* + * SAX: PI detected. + */ + if ((ctxt->sax) && (!ctxt->disableSAX) && + (ctxt->sax->processingInstruction != NULL)) + ctxt->sax->processingInstruction(ctxt->userData, + target, NULL); + if (ctxt->instate != XML_PARSER_EOF) + ctxt->instate = state; + return; + } + buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar)); + if (buf == NULL) { + xmlErrMemory(ctxt, NULL); + ctxt->instate = state; + return; + } + if (SKIP_BLANKS == 0) { + xmlFatalErrMsgStr(ctxt, XML_ERR_SPACE_REQUIRED, + "ParsePI: PI %s space expected\n", target); + } + cur = CUR_CHAR(l); + while (IS_CHAR(cur) && /* checked */ + ((cur != '?') || (NXT(1) != '>'))) { + if (len + 5 >= size) { + xmlChar *tmp; + size_t new_size = size * 2; + tmp = (xmlChar *) xmlRealloc(buf, new_size); + if (tmp == NULL) { + xmlErrMemory(ctxt, NULL); + xmlFree(buf); + ctxt->instate = state; + return; + } + buf = tmp; + size = new_size; + } + count++; + if (count > 50) { + GROW; + if (ctxt->instate == XML_PARSER_EOF) { + xmlFree(buf); + return; + } + count = 0; + if ((len > XML_MAX_TEXT_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErrMsgStr(ctxt, XML_ERR_PI_NOT_FINISHED, + "PI %s too big found", target); + xmlFree(buf); + ctxt->instate = state; + return; + } + } + COPY_BUF(l,buf,len,cur); + NEXTL(l); + cur = CUR_CHAR(l); + if (cur == 0) { + SHRINK; + GROW; + cur = CUR_CHAR(l); + } + } + if ((len > XML_MAX_TEXT_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErrMsgStr(ctxt, XML_ERR_PI_NOT_FINISHED, + "PI %s too big found", target); + xmlFree(buf); + ctxt->instate = state; + return; + } + buf[len] = 0; + if (cur != '?') { + xmlFatalErrMsgStr(ctxt, XML_ERR_PI_NOT_FINISHED, + "ParsePI: PI %s never end ...\n", target); + } else { + if (inputid != ctxt->input->id) { + xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY, + "PI declaration doesn't start and stop in" + " the same entity\n"); + } + SKIP(2); + +#ifdef LIBXML_CATALOG_ENABLED + if (((state == XML_PARSER_MISC) || + (state == XML_PARSER_START)) && + (xmlStrEqual(target, XML_CATALOG_PI))) { + xmlCatalogAllow allow = xmlCatalogGetDefaults(); + if ((allow == XML_CATA_ALLOW_DOCUMENT) || + (allow == XML_CATA_ALLOW_ALL)) + xmlParseCatalogPI(ctxt, buf); + } +#endif + + + /* + * SAX: PI detected. + */ + if ((ctxt->sax) && (!ctxt->disableSAX) && + (ctxt->sax->processingInstruction != NULL)) + ctxt->sax->processingInstruction(ctxt->userData, + target, buf); + } + xmlFree(buf); + } else { + xmlFatalErr(ctxt, XML_ERR_PI_NOT_STARTED, NULL); + } + if (ctxt->instate != XML_PARSER_EOF) + ctxt->instate = state; + } +} + +/** + * xmlParseNotationDecl: + * @ctxt: an XML parser context + * + * parse a notation declaration + * + * [82] NotationDecl ::= '<!NOTATION' S Name S (ExternalID | PublicID) S? '>' + * + * Hence there is actually 3 choices: + * 'PUBLIC' S PubidLiteral + * 'PUBLIC' S PubidLiteral S SystemLiteral + * and 'SYSTEM' S SystemLiteral + * + * See the NOTE on xmlParseExternalID(). + */ + +void +xmlParseNotationDecl(xmlParserCtxtPtr ctxt) { + const xmlChar *name; + xmlChar *Pubid; + xmlChar *Systemid; + + if (CMP10(CUR_PTR, '<', '!', 'N', 'O', 'T', 'A', 'T', 'I', 'O', 'N')) { + int inputid = ctxt->input->id; + SHRINK; + SKIP(10); + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space required after '<!NOTATION'\n"); + return; + } + + name = xmlParseName(ctxt); + if (name == NULL) { + xmlFatalErr(ctxt, XML_ERR_NOTATION_NOT_STARTED, NULL); + return; + } + if (xmlStrchr(name, ':') != NULL) { + xmlNsErr(ctxt, XML_NS_ERR_COLON, + "colons are forbidden from notation names '%s'\n", + name, NULL, NULL); + } + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space required after the NOTATION name'\n"); + return; + } + + /* + * Parse the IDs. + */ + Systemid = xmlParseExternalID(ctxt, &Pubid, 0); + SKIP_BLANKS; + + if (RAW == '>') { + if (inputid != ctxt->input->id) { + xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY, + "Notation declaration doesn't start and stop" + " in the same entity\n"); + } + NEXT; + if ((ctxt->sax != NULL) && (!ctxt->disableSAX) && + (ctxt->sax->notationDecl != NULL)) + ctxt->sax->notationDecl(ctxt->userData, name, Pubid, Systemid); + } else { + xmlFatalErr(ctxt, XML_ERR_NOTATION_NOT_FINISHED, NULL); + } + if (Systemid != NULL) xmlFree(Systemid); + if (Pubid != NULL) xmlFree(Pubid); + } +} + +/** + * xmlParseEntityDecl: + * @ctxt: an XML parser context + * + * parse <!ENTITY declarations + * + * [70] EntityDecl ::= GEDecl | PEDecl + * + * [71] GEDecl ::= '<!ENTITY' S Name S EntityDef S? '>' + * + * [72] PEDecl ::= '<!ENTITY' S '%' S Name S PEDef S? '>' + * + * [73] EntityDef ::= EntityValue | (ExternalID NDataDecl?) + * + * [74] PEDef ::= EntityValue | ExternalID + * + * [76] NDataDecl ::= S 'NDATA' S Name + * + * [ VC: Notation Declared ] + * The Name must match the declared name of a notation. + */ + +void +xmlParseEntityDecl(xmlParserCtxtPtr ctxt) { + const xmlChar *name = NULL; + xmlChar *value = NULL; + xmlChar *URI = NULL, *literal = NULL; + const xmlChar *ndata = NULL; + int isParameter = 0; + xmlChar *orig = NULL; + + /* GROW; done in the caller */ + if (CMP8(CUR_PTR, '<', '!', 'E', 'N', 'T', 'I', 'T', 'Y')) { + int inputid = ctxt->input->id; + SHRINK; + SKIP(8); + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space required after '<!ENTITY'\n"); + } + + if (RAW == '%') { + NEXT; + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space required after '%%'\n"); + } + isParameter = 1; + } + + name = xmlParseName(ctxt); + if (name == NULL) { + xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED, + "xmlParseEntityDecl: no name\n"); + return; + } + if (xmlStrchr(name, ':') != NULL) { + xmlNsErr(ctxt, XML_NS_ERR_COLON, + "colons are forbidden from entities names '%s'\n", + name, NULL, NULL); + } + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space required after the entity name\n"); + } + + ctxt->instate = XML_PARSER_ENTITY_DECL; + /* + * handle the various case of definitions... + */ + if (isParameter) { + if ((RAW == '"') || (RAW == '\'')) { + value = xmlParseEntityValue(ctxt, &orig); + if (value) { + if ((ctxt->sax != NULL) && + (!ctxt->disableSAX) && (ctxt->sax->entityDecl != NULL)) + ctxt->sax->entityDecl(ctxt->userData, name, + XML_INTERNAL_PARAMETER_ENTITY, + NULL, NULL, value); + } + } else { + URI = xmlParseExternalID(ctxt, &literal, 1); + if ((URI == NULL) && (literal == NULL)) { + xmlFatalErr(ctxt, XML_ERR_VALUE_REQUIRED, NULL); + } + if (URI) { + xmlURIPtr uri; + + uri = xmlParseURI((const char *) URI); + if (uri == NULL) { + xmlErrMsgStr(ctxt, XML_ERR_INVALID_URI, + "Invalid URI: %s\n", URI); + /* + * This really ought to be a well formedness error + * but the XML Core WG decided otherwise c.f. issue + * E26 of the XML erratas. + */ + } else { + if (uri->fragment != NULL) { + /* + * Okay this is foolish to block those but not + * invalid URIs. + */ + xmlFatalErr(ctxt, XML_ERR_URI_FRAGMENT, NULL); + } else { + if ((ctxt->sax != NULL) && + (!ctxt->disableSAX) && + (ctxt->sax->entityDecl != NULL)) + ctxt->sax->entityDecl(ctxt->userData, name, + XML_EXTERNAL_PARAMETER_ENTITY, + literal, URI, NULL); + } + xmlFreeURI(uri); + } + } + } + } else { + if ((RAW == '"') || (RAW == '\'')) { + value = xmlParseEntityValue(ctxt, &orig); + if ((ctxt->sax != NULL) && + (!ctxt->disableSAX) && (ctxt->sax->entityDecl != NULL)) + ctxt->sax->entityDecl(ctxt->userData, name, + XML_INTERNAL_GENERAL_ENTITY, + NULL, NULL, value); + /* + * For expat compatibility in SAX mode. + */ + if ((ctxt->myDoc == NULL) || + (xmlStrEqual(ctxt->myDoc->version, SAX_COMPAT_MODE))) { + if (ctxt->myDoc == NULL) { + ctxt->myDoc = xmlNewDoc(SAX_COMPAT_MODE); + if (ctxt->myDoc == NULL) { + xmlErrMemory(ctxt, "New Doc failed"); + return; + } + ctxt->myDoc->properties = XML_DOC_INTERNAL; + } + if (ctxt->myDoc->intSubset == NULL) + ctxt->myDoc->intSubset = xmlNewDtd(ctxt->myDoc, + BAD_CAST "fake", NULL, NULL); + + xmlSAX2EntityDecl(ctxt, name, XML_INTERNAL_GENERAL_ENTITY, + NULL, NULL, value); + } + } else { + URI = xmlParseExternalID(ctxt, &literal, 1); + if ((URI == NULL) && (literal == NULL)) { + xmlFatalErr(ctxt, XML_ERR_VALUE_REQUIRED, NULL); + } + if (URI) { + xmlURIPtr uri; + + uri = xmlParseURI((const char *)URI); + if (uri == NULL) { + xmlErrMsgStr(ctxt, XML_ERR_INVALID_URI, + "Invalid URI: %s\n", URI); + /* + * This really ought to be a well formedness error + * but the XML Core WG decided otherwise c.f. issue + * E26 of the XML erratas. + */ + } else { + if (uri->fragment != NULL) { + /* + * Okay this is foolish to block those but not + * invalid URIs. + */ + xmlFatalErr(ctxt, XML_ERR_URI_FRAGMENT, NULL); + } + xmlFreeURI(uri); + } + } + if ((RAW != '>') && (SKIP_BLANKS == 0)) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space required before 'NDATA'\n"); + } + if (CMP5(CUR_PTR, 'N', 'D', 'A', 'T', 'A')) { + SKIP(5); + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space required after 'NDATA'\n"); + } + ndata = xmlParseName(ctxt); + if ((ctxt->sax != NULL) && (!ctxt->disableSAX) && + (ctxt->sax->unparsedEntityDecl != NULL)) + ctxt->sax->unparsedEntityDecl(ctxt->userData, name, + literal, URI, ndata); + } else { + if ((ctxt->sax != NULL) && + (!ctxt->disableSAX) && (ctxt->sax->entityDecl != NULL)) + ctxt->sax->entityDecl(ctxt->userData, name, + XML_EXTERNAL_GENERAL_PARSED_ENTITY, + literal, URI, NULL); + /* + * For expat compatibility in SAX mode. + * assuming the entity replacement was asked for + */ + if ((ctxt->replaceEntities != 0) && + ((ctxt->myDoc == NULL) || + (xmlStrEqual(ctxt->myDoc->version, SAX_COMPAT_MODE)))) { + if (ctxt->myDoc == NULL) { + ctxt->myDoc = xmlNewDoc(SAX_COMPAT_MODE); + if (ctxt->myDoc == NULL) { + xmlErrMemory(ctxt, "New Doc failed"); + return; + } + ctxt->myDoc->properties = XML_DOC_INTERNAL; + } + + if (ctxt->myDoc->intSubset == NULL) + ctxt->myDoc->intSubset = xmlNewDtd(ctxt->myDoc, + BAD_CAST "fake", NULL, NULL); + xmlSAX2EntityDecl(ctxt, name, + XML_EXTERNAL_GENERAL_PARSED_ENTITY, + literal, URI, NULL); + } + } + } + } + if (ctxt->instate == XML_PARSER_EOF) + goto done; + SKIP_BLANKS; + if (RAW != '>') { + xmlFatalErrMsgStr(ctxt, XML_ERR_ENTITY_NOT_FINISHED, + "xmlParseEntityDecl: entity %s not terminated\n", name); + xmlHaltParser(ctxt); + } else { + if (inputid != ctxt->input->id) { + xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY, + "Entity declaration doesn't start and stop in" + " the same entity\n"); + } + NEXT; + } + if (orig != NULL) { + /* + * Ugly mechanism to save the raw entity value. + */ + xmlEntityPtr cur = NULL; + + if (isParameter) { + if ((ctxt->sax != NULL) && + (ctxt->sax->getParameterEntity != NULL)) + cur = ctxt->sax->getParameterEntity(ctxt->userData, name); + } else { + if ((ctxt->sax != NULL) && + (ctxt->sax->getEntity != NULL)) + cur = ctxt->sax->getEntity(ctxt->userData, name); + if ((cur == NULL) && (ctxt->userData==ctxt)) { + cur = xmlSAX2GetEntity(ctxt, name); + } + } + if ((cur != NULL) && (cur->orig == NULL)) { + cur->orig = orig; + orig = NULL; + } + } + +done: + if (value != NULL) xmlFree(value); + if (URI != NULL) xmlFree(URI); + if (literal != NULL) xmlFree(literal); + if (orig != NULL) xmlFree(orig); + } +} + +/** + * xmlParseDefaultDecl: + * @ctxt: an XML parser context + * @value: Receive a possible fixed default value for the attribute + * + * Parse an attribute default declaration + * + * [60] DefaultDecl ::= '#REQUIRED' | '#IMPLIED' | (('#FIXED' S)? AttValue) + * + * [ VC: Required Attribute ] + * if the default declaration is the keyword #REQUIRED, then the + * attribute must be specified for all elements of the type in the + * attribute-list declaration. + * + * [ VC: Attribute Default Legal ] + * The declared default value must meet the lexical constraints of + * the declared attribute type c.f. xmlValidateAttributeDecl() + * + * [ VC: Fixed Attribute Default ] + * if an attribute has a default value declared with the #FIXED + * keyword, instances of that attribute must match the default value. + * + * [ WFC: No < in Attribute Values ] + * handled in xmlParseAttValue() + * + * returns: XML_ATTRIBUTE_NONE, XML_ATTRIBUTE_REQUIRED, XML_ATTRIBUTE_IMPLIED + * or XML_ATTRIBUTE_FIXED. + */ + +int +xmlParseDefaultDecl(xmlParserCtxtPtr ctxt, xmlChar **value) { + int val; + xmlChar *ret; + + *value = NULL; + if (CMP9(CUR_PTR, '#', 'R', 'E', 'Q', 'U', 'I', 'R', 'E', 'D')) { + SKIP(9); + return(XML_ATTRIBUTE_REQUIRED); + } + if (CMP8(CUR_PTR, '#', 'I', 'M', 'P', 'L', 'I', 'E', 'D')) { + SKIP(8); + return(XML_ATTRIBUTE_IMPLIED); + } + val = XML_ATTRIBUTE_NONE; + if (CMP6(CUR_PTR, '#', 'F', 'I', 'X', 'E', 'D')) { + SKIP(6); + val = XML_ATTRIBUTE_FIXED; + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space required after '#FIXED'\n"); + } + } + ret = xmlParseAttValue(ctxt); + ctxt->instate = XML_PARSER_DTD; + if (ret == NULL) { + xmlFatalErrMsg(ctxt, (xmlParserErrors)ctxt->errNo, + "Attribute default value declaration error\n"); + } else + *value = ret; + return(val); +} + +/** + * xmlParseNotationType: + * @ctxt: an XML parser context + * + * parse an Notation attribute type. + * + * Note: the leading 'NOTATION' S part has already being parsed... + * + * [58] NotationType ::= 'NOTATION' S '(' S? Name (S? '|' S? Name)* S? ')' + * + * [ VC: Notation Attributes ] + * Values of this type must match one of the notation names included + * in the declaration; all notation names in the declaration must be declared. + * + * Returns: the notation attribute tree built while parsing + */ + +xmlEnumerationPtr +xmlParseNotationType(xmlParserCtxtPtr ctxt) { + const xmlChar *name; + xmlEnumerationPtr ret = NULL, last = NULL, cur, tmp; + + if (RAW != '(') { + xmlFatalErr(ctxt, XML_ERR_NOTATION_NOT_STARTED, NULL); + return(NULL); + } + SHRINK; + do { + NEXT; + SKIP_BLANKS; + name = xmlParseName(ctxt); + if (name == NULL) { + xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED, + "Name expected in NOTATION declaration\n"); + xmlFreeEnumeration(ret); + return(NULL); + } + tmp = ret; + while (tmp != NULL) { + if (xmlStrEqual(name, tmp->name)) { + xmlValidityError(ctxt, XML_DTD_DUP_TOKEN, + "standalone: attribute notation value token %s duplicated\n", + name, NULL); + if (!xmlDictOwns(ctxt->dict, name)) + xmlFree((xmlChar *) name); + break; + } + tmp = tmp->next; + } + if (tmp == NULL) { + cur = xmlCreateEnumeration(name); + if (cur == NULL) { + xmlFreeEnumeration(ret); + return(NULL); + } + if (last == NULL) ret = last = cur; + else { + last->next = cur; + last = cur; + } + } + SKIP_BLANKS; + } while (RAW == '|'); + if (RAW != ')') { + xmlFatalErr(ctxt, XML_ERR_NOTATION_NOT_FINISHED, NULL); + xmlFreeEnumeration(ret); + return(NULL); + } + NEXT; + return(ret); +} + +/** + * xmlParseEnumerationType: + * @ctxt: an XML parser context + * + * parse an Enumeration attribute type. + * + * [59] Enumeration ::= '(' S? Nmtoken (S? '|' S? Nmtoken)* S? ')' + * + * [ VC: Enumeration ] + * Values of this type must match one of the Nmtoken tokens in + * the declaration + * + * Returns: the enumeration attribute tree built while parsing + */ + +xmlEnumerationPtr +xmlParseEnumerationType(xmlParserCtxtPtr ctxt) { + xmlChar *name; + xmlEnumerationPtr ret = NULL, last = NULL, cur, tmp; + + if (RAW != '(') { + xmlFatalErr(ctxt, XML_ERR_ATTLIST_NOT_STARTED, NULL); + return(NULL); + } + SHRINK; + do { + NEXT; + SKIP_BLANKS; + name = xmlParseNmtoken(ctxt); + if (name == NULL) { + xmlFatalErr(ctxt, XML_ERR_NMTOKEN_REQUIRED, NULL); + return(ret); + } + tmp = ret; + while (tmp != NULL) { + if (xmlStrEqual(name, tmp->name)) { + xmlValidityError(ctxt, XML_DTD_DUP_TOKEN, + "standalone: attribute enumeration value token %s duplicated\n", + name, NULL); + if (!xmlDictOwns(ctxt->dict, name)) + xmlFree(name); + break; + } + tmp = tmp->next; + } + if (tmp == NULL) { + cur = xmlCreateEnumeration(name); + if (!xmlDictOwns(ctxt->dict, name)) + xmlFree(name); + if (cur == NULL) { + xmlFreeEnumeration(ret); + return(NULL); + } + if (last == NULL) ret = last = cur; + else { + last->next = cur; + last = cur; + } + } + SKIP_BLANKS; + } while (RAW == '|'); + if (RAW != ')') { + xmlFatalErr(ctxt, XML_ERR_ATTLIST_NOT_FINISHED, NULL); + return(ret); + } + NEXT; + return(ret); +} + +/** + * xmlParseEnumeratedType: + * @ctxt: an XML parser context + * @tree: the enumeration tree built while parsing + * + * parse an Enumerated attribute type. + * + * [57] EnumeratedType ::= NotationType | Enumeration + * + * [58] NotationType ::= 'NOTATION' S '(' S? Name (S? '|' S? Name)* S? ')' + * + * + * Returns: XML_ATTRIBUTE_ENUMERATION or XML_ATTRIBUTE_NOTATION + */ + +int +xmlParseEnumeratedType(xmlParserCtxtPtr ctxt, xmlEnumerationPtr *tree) { + if (CMP8(CUR_PTR, 'N', 'O', 'T', 'A', 'T', 'I', 'O', 'N')) { + SKIP(8); + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space required after 'NOTATION'\n"); + return(0); + } + *tree = xmlParseNotationType(ctxt); + if (*tree == NULL) return(0); + return(XML_ATTRIBUTE_NOTATION); + } + *tree = xmlParseEnumerationType(ctxt); + if (*tree == NULL) return(0); + return(XML_ATTRIBUTE_ENUMERATION); +} + +/** + * xmlParseAttributeType: + * @ctxt: an XML parser context + * @tree: the enumeration tree built while parsing + * + * parse the Attribute list def for an element + * + * [54] AttType ::= StringType | TokenizedType | EnumeratedType + * + * [55] StringType ::= 'CDATA' + * + * [56] TokenizedType ::= 'ID' | 'IDREF' | 'IDREFS' | 'ENTITY' | + * 'ENTITIES' | 'NMTOKEN' | 'NMTOKENS' + * + * Validity constraints for attribute values syntax are checked in + * xmlValidateAttributeValue() + * + * [ VC: ID ] + * Values of type ID must match the Name production. A name must not + * appear more than once in an XML document as a value of this type; + * i.e., ID values must uniquely identify the elements which bear them. + * + * [ VC: One ID per Element Type ] + * No element type may have more than one ID attribute specified. + * + * [ VC: ID Attribute Default ] + * An ID attribute must have a declared default of #IMPLIED or #REQUIRED. + * + * [ VC: IDREF ] + * Values of type IDREF must match the Name production, and values + * of type IDREFS must match Names; each IDREF Name must match the value + * of an ID attribute on some element in the XML document; i.e. IDREF + * values must match the value of some ID attribute. + * + * [ VC: Entity Name ] + * Values of type ENTITY must match the Name production, values + * of type ENTITIES must match Names; each Entity Name must match the + * name of an unparsed entity declared in the DTD. + * + * [ VC: Name Token ] + * Values of type NMTOKEN must match the Nmtoken production; values + * of type NMTOKENS must match Nmtokens. + * + * Returns the attribute type + */ +int +xmlParseAttributeType(xmlParserCtxtPtr ctxt, xmlEnumerationPtr *tree) { + SHRINK; + if (CMP5(CUR_PTR, 'C', 'D', 'A', 'T', 'A')) { + SKIP(5); + return(XML_ATTRIBUTE_CDATA); + } else if (CMP6(CUR_PTR, 'I', 'D', 'R', 'E', 'F', 'S')) { + SKIP(6); + return(XML_ATTRIBUTE_IDREFS); + } else if (CMP5(CUR_PTR, 'I', 'D', 'R', 'E', 'F')) { + SKIP(5); + return(XML_ATTRIBUTE_IDREF); + } else if ((RAW == 'I') && (NXT(1) == 'D')) { + SKIP(2); + return(XML_ATTRIBUTE_ID); + } else if (CMP6(CUR_PTR, 'E', 'N', 'T', 'I', 'T', 'Y')) { + SKIP(6); + return(XML_ATTRIBUTE_ENTITY); + } else if (CMP8(CUR_PTR, 'E', 'N', 'T', 'I', 'T', 'I', 'E', 'S')) { + SKIP(8); + return(XML_ATTRIBUTE_ENTITIES); + } else if (CMP8(CUR_PTR, 'N', 'M', 'T', 'O', 'K', 'E', 'N', 'S')) { + SKIP(8); + return(XML_ATTRIBUTE_NMTOKENS); + } else if (CMP7(CUR_PTR, 'N', 'M', 'T', 'O', 'K', 'E', 'N')) { + SKIP(7); + return(XML_ATTRIBUTE_NMTOKEN); + } + return(xmlParseEnumeratedType(ctxt, tree)); +} + +/** + * xmlParseAttributeListDecl: + * @ctxt: an XML parser context + * + * : parse the Attribute list def for an element + * + * [52] AttlistDecl ::= '<!ATTLIST' S Name AttDef* S? '>' + * + * [53] AttDef ::= S Name S AttType S DefaultDecl + * + */ +void +xmlParseAttributeListDecl(xmlParserCtxtPtr ctxt) { + const xmlChar *elemName; + const xmlChar *attrName; + xmlEnumerationPtr tree; + + if (CMP9(CUR_PTR, '<', '!', 'A', 'T', 'T', 'L', 'I', 'S', 'T')) { + int inputid = ctxt->input->id; + + SKIP(9); + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space required after '<!ATTLIST'\n"); + } + elemName = xmlParseName(ctxt); + if (elemName == NULL) { + xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED, + "ATTLIST: no name for Element\n"); + return; + } + SKIP_BLANKS; + GROW; + while ((RAW != '>') && (ctxt->instate != XML_PARSER_EOF)) { + int type; + int def; + xmlChar *defaultValue = NULL; + + GROW; + tree = NULL; + attrName = xmlParseName(ctxt); + if (attrName == NULL) { + xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED, + "ATTLIST: no name for Attribute\n"); + break; + } + GROW; + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space required after the attribute name\n"); + break; + } + + type = xmlParseAttributeType(ctxt, &tree); + if (type <= 0) { + break; + } + + GROW; + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space required after the attribute type\n"); + if (tree != NULL) + xmlFreeEnumeration(tree); + break; + } + + def = xmlParseDefaultDecl(ctxt, &defaultValue); + if (def <= 0) { + if (defaultValue != NULL) + xmlFree(defaultValue); + if (tree != NULL) + xmlFreeEnumeration(tree); + break; + } + if ((type != XML_ATTRIBUTE_CDATA) && (defaultValue != NULL)) + xmlAttrNormalizeSpace(defaultValue, defaultValue); + + GROW; + if (RAW != '>') { + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space required after the attribute default value\n"); + if (defaultValue != NULL) + xmlFree(defaultValue); + if (tree != NULL) + xmlFreeEnumeration(tree); + break; + } + } + if ((ctxt->sax != NULL) && (!ctxt->disableSAX) && + (ctxt->sax->attributeDecl != NULL)) + ctxt->sax->attributeDecl(ctxt->userData, elemName, attrName, + type, def, defaultValue, tree); + else if (tree != NULL) + xmlFreeEnumeration(tree); + + if ((ctxt->sax2) && (defaultValue != NULL) && + (def != XML_ATTRIBUTE_IMPLIED) && + (def != XML_ATTRIBUTE_REQUIRED)) { + xmlAddDefAttrs(ctxt, elemName, attrName, defaultValue); + } + if (ctxt->sax2) { + xmlAddSpecialAttr(ctxt, elemName, attrName, type); + } + if (defaultValue != NULL) + xmlFree(defaultValue); + GROW; + } + if (RAW == '>') { + if (inputid != ctxt->input->id) { + xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY, + "Attribute list declaration doesn't start and" + " stop in the same entity\n"); + } + NEXT; + } + } +} + +/** + * xmlParseElementMixedContentDecl: + * @ctxt: an XML parser context + * @inputchk: the input used for the current entity, needed for boundary checks + * + * parse the declaration for a Mixed Element content + * The leading '(' and spaces have been skipped in xmlParseElementContentDecl + * + * [51] Mixed ::= '(' S? '#PCDATA' (S? '|' S? Name)* S? ')*' | + * '(' S? '#PCDATA' S? ')' + * + * [ VC: Proper Group/PE Nesting ] applies to [51] too (see [49]) + * + * [ VC: No Duplicate Types ] + * The same name must not appear more than once in a single + * mixed-content declaration. + * + * returns: the list of the xmlElementContentPtr describing the element choices + */ +xmlElementContentPtr +xmlParseElementMixedContentDecl(xmlParserCtxtPtr ctxt, int inputchk) { + xmlElementContentPtr ret = NULL, cur = NULL, n; + const xmlChar *elem = NULL; + + GROW; + if (CMP7(CUR_PTR, '#', 'P', 'C', 'D', 'A', 'T', 'A')) { + SKIP(7); + SKIP_BLANKS; + SHRINK; + if (RAW == ')') { + if (ctxt->input->id != inputchk) { + xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY, + "Element content declaration doesn't start and" + " stop in the same entity\n"); + } + NEXT; + ret = xmlNewDocElementContent(ctxt->myDoc, NULL, XML_ELEMENT_CONTENT_PCDATA); + if (ret == NULL) + return(NULL); + if (RAW == '*') { + ret->ocur = XML_ELEMENT_CONTENT_MULT; + NEXT; + } + return(ret); + } + if ((RAW == '(') || (RAW == '|')) { + ret = cur = xmlNewDocElementContent(ctxt->myDoc, NULL, XML_ELEMENT_CONTENT_PCDATA); + if (ret == NULL) return(NULL); + } + while ((RAW == '|') && (ctxt->instate != XML_PARSER_EOF)) { + NEXT; + if (elem == NULL) { + ret = xmlNewDocElementContent(ctxt->myDoc, NULL, XML_ELEMENT_CONTENT_OR); + if (ret == NULL) return(NULL); + ret->c1 = cur; + if (cur != NULL) + cur->parent = ret; + cur = ret; + } else { + n = xmlNewDocElementContent(ctxt->myDoc, NULL, XML_ELEMENT_CONTENT_OR); + if (n == NULL) return(NULL); + n->c1 = xmlNewDocElementContent(ctxt->myDoc, elem, XML_ELEMENT_CONTENT_ELEMENT); + if (n->c1 != NULL) + n->c1->parent = n; + cur->c2 = n; + if (n != NULL) + n->parent = cur; + cur = n; + } + SKIP_BLANKS; + elem = xmlParseName(ctxt); + if (elem == NULL) { + xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED, + "xmlParseElementMixedContentDecl : Name expected\n"); + xmlFreeDocElementContent(ctxt->myDoc, ret); + return(NULL); + } + SKIP_BLANKS; + GROW; + } + if ((RAW == ')') && (NXT(1) == '*')) { + if (elem != NULL) { + cur->c2 = xmlNewDocElementContent(ctxt->myDoc, elem, + XML_ELEMENT_CONTENT_ELEMENT); + if (cur->c2 != NULL) + cur->c2->parent = cur; + } + if (ret != NULL) + ret->ocur = XML_ELEMENT_CONTENT_MULT; + if (ctxt->input->id != inputchk) { + xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY, + "Element content declaration doesn't start and" + " stop in the same entity\n"); + } + SKIP(2); + } else { + xmlFreeDocElementContent(ctxt->myDoc, ret); + xmlFatalErr(ctxt, XML_ERR_MIXED_NOT_STARTED, NULL); + return(NULL); + } + + } else { + xmlFatalErr(ctxt, XML_ERR_PCDATA_REQUIRED, NULL); + } + return(ret); +} + +/** + * xmlParseElementChildrenContentDeclPriv: + * @ctxt: an XML parser context + * @inputchk: the input used for the current entity, needed for boundary checks + * @depth: the level of recursion + * + * parse the declaration for a Mixed Element content + * The leading '(' and spaces have been skipped in xmlParseElementContentDecl + * + * + * [47] children ::= (choice | seq) ('?' | '*' | '+')? + * + * [48] cp ::= (Name | choice | seq) ('?' | '*' | '+')? + * + * [49] choice ::= '(' S? cp ( S? '|' S? cp )* S? ')' + * + * [50] seq ::= '(' S? cp ( S? ',' S? cp )* S? ')' + * + * [ VC: Proper Group/PE Nesting ] applies to [49] and [50] + * TODO Parameter-entity replacement text must be properly nested + * with parenthesized groups. That is to say, if either of the + * opening or closing parentheses in a choice, seq, or Mixed + * construct is contained in the replacement text for a parameter + * entity, both must be contained in the same replacement text. For + * interoperability, if a parameter-entity reference appears in a + * choice, seq, or Mixed construct, its replacement text should not + * be empty, and neither the first nor last non-blank character of + * the replacement text should be a connector (| or ,). + * + * Returns the tree of xmlElementContentPtr describing the element + * hierarchy. + */ +static xmlElementContentPtr +xmlParseElementChildrenContentDeclPriv(xmlParserCtxtPtr ctxt, int inputchk, + int depth) { + xmlElementContentPtr ret = NULL, cur = NULL, last = NULL, op = NULL; + const xmlChar *elem; + xmlChar type = 0; + + if (((depth > 128) && ((ctxt->options & XML_PARSE_HUGE) == 0)) || + (depth > 2048)) { + xmlFatalErrMsgInt(ctxt, XML_ERR_ELEMCONTENT_NOT_FINISHED, +"xmlParseElementChildrenContentDecl : depth %d too deep, use XML_PARSE_HUGE\n", + depth); + return(NULL); + } + SKIP_BLANKS; + GROW; + if (RAW == '(') { + int inputid = ctxt->input->id; + + /* Recurse on first child */ + NEXT; + SKIP_BLANKS; + cur = ret = xmlParseElementChildrenContentDeclPriv(ctxt, inputid, + depth + 1); + SKIP_BLANKS; + GROW; + } else { + elem = xmlParseName(ctxt); + if (elem == NULL) { + xmlFatalErr(ctxt, XML_ERR_ELEMCONTENT_NOT_STARTED, NULL); + return(NULL); + } + cur = ret = xmlNewDocElementContent(ctxt->myDoc, elem, XML_ELEMENT_CONTENT_ELEMENT); + if (cur == NULL) { + xmlErrMemory(ctxt, NULL); + return(NULL); + } + GROW; + if (RAW == '?') { + cur->ocur = XML_ELEMENT_CONTENT_OPT; + NEXT; + } else if (RAW == '*') { + cur->ocur = XML_ELEMENT_CONTENT_MULT; + NEXT; + } else if (RAW == '+') { + cur->ocur = XML_ELEMENT_CONTENT_PLUS; + NEXT; + } else { + cur->ocur = XML_ELEMENT_CONTENT_ONCE; + } + GROW; + } + SKIP_BLANKS; + SHRINK; + while ((RAW != ')') && (ctxt->instate != XML_PARSER_EOF)) { + /* + * Each loop we parse one separator and one element. + */ + if (RAW == ',') { + if (type == 0) type = CUR; + + /* + * Detect "Name | Name , Name" error + */ + else if (type != CUR) { + xmlFatalErrMsgInt(ctxt, XML_ERR_SEPARATOR_REQUIRED, + "xmlParseElementChildrenContentDecl : '%c' expected\n", + type); + if ((last != NULL) && (last != ret)) + xmlFreeDocElementContent(ctxt->myDoc, last); + if (ret != NULL) + xmlFreeDocElementContent(ctxt->myDoc, ret); + return(NULL); + } + NEXT; + + op = xmlNewDocElementContent(ctxt->myDoc, NULL, XML_ELEMENT_CONTENT_SEQ); + if (op == NULL) { + if ((last != NULL) && (last != ret)) + xmlFreeDocElementContent(ctxt->myDoc, last); + xmlFreeDocElementContent(ctxt->myDoc, ret); + return(NULL); + } + if (last == NULL) { + op->c1 = ret; + if (ret != NULL) + ret->parent = op; + ret = cur = op; + } else { + cur->c2 = op; + if (op != NULL) + op->parent = cur; + op->c1 = last; + if (last != NULL) + last->parent = op; + cur =op; + last = NULL; + } + } else if (RAW == '|') { + if (type == 0) type = CUR; + + /* + * Detect "Name , Name | Name" error + */ + else if (type != CUR) { + xmlFatalErrMsgInt(ctxt, XML_ERR_SEPARATOR_REQUIRED, + "xmlParseElementChildrenContentDecl : '%c' expected\n", + type); + if ((last != NULL) && (last != ret)) + xmlFreeDocElementContent(ctxt->myDoc, last); + if (ret != NULL) + xmlFreeDocElementContent(ctxt->myDoc, ret); + return(NULL); + } + NEXT; + + op = xmlNewDocElementContent(ctxt->myDoc, NULL, XML_ELEMENT_CONTENT_OR); + if (op == NULL) { + if ((last != NULL) && (last != ret)) + xmlFreeDocElementContent(ctxt->myDoc, last); + if (ret != NULL) + xmlFreeDocElementContent(ctxt->myDoc, ret); + return(NULL); + } + if (last == NULL) { + op->c1 = ret; + if (ret != NULL) + ret->parent = op; + ret = cur = op; + } else { + cur->c2 = op; + if (op != NULL) + op->parent = cur; + op->c1 = last; + if (last != NULL) + last->parent = op; + cur =op; + last = NULL; + } + } else { + xmlFatalErr(ctxt, XML_ERR_ELEMCONTENT_NOT_FINISHED, NULL); + if ((last != NULL) && (last != ret)) + xmlFreeDocElementContent(ctxt->myDoc, last); + if (ret != NULL) + xmlFreeDocElementContent(ctxt->myDoc, ret); + return(NULL); + } + GROW; + SKIP_BLANKS; + GROW; + if (RAW == '(') { + int inputid = ctxt->input->id; + /* Recurse on second child */ + NEXT; + SKIP_BLANKS; + last = xmlParseElementChildrenContentDeclPriv(ctxt, inputid, + depth + 1); + SKIP_BLANKS; + } else { + elem = xmlParseName(ctxt); + if (elem == NULL) { + xmlFatalErr(ctxt, XML_ERR_ELEMCONTENT_NOT_STARTED, NULL); + if (ret != NULL) + xmlFreeDocElementContent(ctxt->myDoc, ret); + return(NULL); + } + last = xmlNewDocElementContent(ctxt->myDoc, elem, XML_ELEMENT_CONTENT_ELEMENT); + if (last == NULL) { + if (ret != NULL) + xmlFreeDocElementContent(ctxt->myDoc, ret); + return(NULL); + } + if (RAW == '?') { + last->ocur = XML_ELEMENT_CONTENT_OPT; + NEXT; + } else if (RAW == '*') { + last->ocur = XML_ELEMENT_CONTENT_MULT; + NEXT; + } else if (RAW == '+') { + last->ocur = XML_ELEMENT_CONTENT_PLUS; + NEXT; + } else { + last->ocur = XML_ELEMENT_CONTENT_ONCE; + } + } + SKIP_BLANKS; + GROW; + } + if ((cur != NULL) && (last != NULL)) { + cur->c2 = last; + if (last != NULL) + last->parent = cur; + } + if (ctxt->input->id != inputchk) { + xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY, + "Element content declaration doesn't start and stop in" + " the same entity\n"); + } + NEXT; + if (RAW == '?') { + if (ret != NULL) { + if ((ret->ocur == XML_ELEMENT_CONTENT_PLUS) || + (ret->ocur == XML_ELEMENT_CONTENT_MULT)) + ret->ocur = XML_ELEMENT_CONTENT_MULT; + else + ret->ocur = XML_ELEMENT_CONTENT_OPT; + } + NEXT; + } else if (RAW == '*') { + if (ret != NULL) { + ret->ocur = XML_ELEMENT_CONTENT_MULT; + cur = ret; + /* + * Some normalization: + * (a | b* | c?)* == (a | b | c)* + */ + while ((cur != NULL) && (cur->type == XML_ELEMENT_CONTENT_OR)) { + if ((cur->c1 != NULL) && + ((cur->c1->ocur == XML_ELEMENT_CONTENT_OPT) || + (cur->c1->ocur == XML_ELEMENT_CONTENT_MULT))) + cur->c1->ocur = XML_ELEMENT_CONTENT_ONCE; + if ((cur->c2 != NULL) && + ((cur->c2->ocur == XML_ELEMENT_CONTENT_OPT) || + (cur->c2->ocur == XML_ELEMENT_CONTENT_MULT))) + cur->c2->ocur = XML_ELEMENT_CONTENT_ONCE; + cur = cur->c2; + } + } + NEXT; + } else if (RAW == '+') { + if (ret != NULL) { + int found = 0; + + if ((ret->ocur == XML_ELEMENT_CONTENT_OPT) || + (ret->ocur == XML_ELEMENT_CONTENT_MULT)) + ret->ocur = XML_ELEMENT_CONTENT_MULT; + else + ret->ocur = XML_ELEMENT_CONTENT_PLUS; + /* + * Some normalization: + * (a | b*)+ == (a | b)* + * (a | b?)+ == (a | b)* + */ + while ((cur != NULL) && (cur->type == XML_ELEMENT_CONTENT_OR)) { + if ((cur->c1 != NULL) && + ((cur->c1->ocur == XML_ELEMENT_CONTENT_OPT) || + (cur->c1->ocur == XML_ELEMENT_CONTENT_MULT))) { + cur->c1->ocur = XML_ELEMENT_CONTENT_ONCE; + found = 1; + } + if ((cur->c2 != NULL) && + ((cur->c2->ocur == XML_ELEMENT_CONTENT_OPT) || + (cur->c2->ocur == XML_ELEMENT_CONTENT_MULT))) { + cur->c2->ocur = XML_ELEMENT_CONTENT_ONCE; + found = 1; + } + cur = cur->c2; + } + if (found) + ret->ocur = XML_ELEMENT_CONTENT_MULT; + } + NEXT; + } + return(ret); +} + +/** + * xmlParseElementChildrenContentDecl: + * @ctxt: an XML parser context + * @inputchk: the input used for the current entity, needed for boundary checks + * + * parse the declaration for a Mixed Element content + * The leading '(' and spaces have been skipped in xmlParseElementContentDecl + * + * [47] children ::= (choice | seq) ('?' | '*' | '+')? + * + * [48] cp ::= (Name | choice | seq) ('?' | '*' | '+')? + * + * [49] choice ::= '(' S? cp ( S? '|' S? cp )* S? ')' + * + * [50] seq ::= '(' S? cp ( S? ',' S? cp )* S? ')' + * + * [ VC: Proper Group/PE Nesting ] applies to [49] and [50] + * TODO Parameter-entity replacement text must be properly nested + * with parenthesized groups. That is to say, if either of the + * opening or closing parentheses in a choice, seq, or Mixed + * construct is contained in the replacement text for a parameter + * entity, both must be contained in the same replacement text. For + * interoperability, if a parameter-entity reference appears in a + * choice, seq, or Mixed construct, its replacement text should not + * be empty, and neither the first nor last non-blank character of + * the replacement text should be a connector (| or ,). + * + * Returns the tree of xmlElementContentPtr describing the element + * hierarchy. + */ +xmlElementContentPtr +xmlParseElementChildrenContentDecl(xmlParserCtxtPtr ctxt, int inputchk) { + /* stub left for API/ABI compat */ + return(xmlParseElementChildrenContentDeclPriv(ctxt, inputchk, 1)); +} + +/** + * xmlParseElementContentDecl: + * @ctxt: an XML parser context + * @name: the name of the element being defined. + * @result: the Element Content pointer will be stored here if any + * + * parse the declaration for an Element content either Mixed or Children, + * the cases EMPTY and ANY are handled directly in xmlParseElementDecl + * + * [46] contentspec ::= 'EMPTY' | 'ANY' | Mixed | children + * + * returns: the type of element content XML_ELEMENT_TYPE_xxx + */ + +int +xmlParseElementContentDecl(xmlParserCtxtPtr ctxt, const xmlChar *name, + xmlElementContentPtr *result) { + + xmlElementContentPtr tree = NULL; + int inputid = ctxt->input->id; + int res; + + *result = NULL; + + if (RAW != '(') { + xmlFatalErrMsgStr(ctxt, XML_ERR_ELEMCONTENT_NOT_STARTED, + "xmlParseElementContentDecl : %s '(' expected\n", name); + return(-1); + } + NEXT; + GROW; + if (ctxt->instate == XML_PARSER_EOF) + return(-1); + SKIP_BLANKS; + if (CMP7(CUR_PTR, '#', 'P', 'C', 'D', 'A', 'T', 'A')) { + tree = xmlParseElementMixedContentDecl(ctxt, inputid); + res = XML_ELEMENT_TYPE_MIXED; + } else { + tree = xmlParseElementChildrenContentDeclPriv(ctxt, inputid, 1); + res = XML_ELEMENT_TYPE_ELEMENT; + } + SKIP_BLANKS; + *result = tree; + return(res); +} + +/** + * xmlParseElementDecl: + * @ctxt: an XML parser context + * + * parse an Element declaration. + * + * [45] elementdecl ::= '<!ELEMENT' S Name S contentspec S? '>' + * + * [ VC: Unique Element Type Declaration ] + * No element type may be declared more than once + * + * Returns the type of the element, or -1 in case of error + */ +int +xmlParseElementDecl(xmlParserCtxtPtr ctxt) { + const xmlChar *name; + int ret = -1; + xmlElementContentPtr content = NULL; + + /* GROW; done in the caller */ + if (CMP9(CUR_PTR, '<', '!', 'E', 'L', 'E', 'M', 'E', 'N', 'T')) { + int inputid = ctxt->input->id; + + SKIP(9); + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space required after 'ELEMENT'\n"); + return(-1); + } + name = xmlParseName(ctxt); + if (name == NULL) { + xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED, + "xmlParseElementDecl: no name for Element\n"); + return(-1); + } + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space required after the element name\n"); + } + if (CMP5(CUR_PTR, 'E', 'M', 'P', 'T', 'Y')) { + SKIP(5); + /* + * Element must always be empty. + */ + ret = XML_ELEMENT_TYPE_EMPTY; + } else if ((RAW == 'A') && (NXT(1) == 'N') && + (NXT(2) == 'Y')) { + SKIP(3); + /* + * Element is a generic container. + */ + ret = XML_ELEMENT_TYPE_ANY; + } else if (RAW == '(') { + ret = xmlParseElementContentDecl(ctxt, name, &content); + } else { + /* + * [ WFC: PEs in Internal Subset ] error handling. + */ + if ((RAW == '%') && (ctxt->external == 0) && + (ctxt->inputNr == 1)) { + xmlFatalErrMsg(ctxt, XML_ERR_PEREF_IN_INT_SUBSET, + "PEReference: forbidden within markup decl in internal subset\n"); + } else { + xmlFatalErrMsg(ctxt, XML_ERR_ELEMCONTENT_NOT_STARTED, + "xmlParseElementDecl: 'EMPTY', 'ANY' or '(' expected\n"); + } + return(-1); + } + + SKIP_BLANKS; + + if (RAW != '>') { + xmlFatalErr(ctxt, XML_ERR_GT_REQUIRED, NULL); + if (content != NULL) { + xmlFreeDocElementContent(ctxt->myDoc, content); + } + } else { + if (inputid != ctxt->input->id) { + xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY, + "Element declaration doesn't start and stop in" + " the same entity\n"); + } + + NEXT; + if ((ctxt->sax != NULL) && (!ctxt->disableSAX) && + (ctxt->sax->elementDecl != NULL)) { + if (content != NULL) + content->parent = NULL; + ctxt->sax->elementDecl(ctxt->userData, name, ret, + content); + if ((content != NULL) && (content->parent == NULL)) { + /* + * this is a trick: if xmlAddElementDecl is called, + * instead of copying the full tree it is plugged directly + * if called from the parser. Avoid duplicating the + * interfaces or change the API/ABI + */ + xmlFreeDocElementContent(ctxt->myDoc, content); + } + } else if (content != NULL) { + xmlFreeDocElementContent(ctxt->myDoc, content); + } + } + } + return(ret); +} + +/** + * xmlParseConditionalSections + * @ctxt: an XML parser context + * + * [61] conditionalSect ::= includeSect | ignoreSect + * [62] includeSect ::= '<![' S? 'INCLUDE' S? '[' extSubsetDecl ']]>' + * [63] ignoreSect ::= '<![' S? 'IGNORE' S? '[' ignoreSectContents* ']]>' + * [64] ignoreSectContents ::= Ignore ('<![' ignoreSectContents ']]>' Ignore)* + * [65] Ignore ::= Char* - (Char* ('<![' | ']]>') Char*) + */ + +static void +xmlParseConditionalSections(xmlParserCtxtPtr ctxt) { + int *inputIds = NULL; + size_t inputIdsSize = 0; + size_t depth = 0; + + while (ctxt->instate != XML_PARSER_EOF) { + if ((RAW == '<') && (NXT(1) == '!') && (NXT(2) == '[')) { + int id = ctxt->input->id; + + SKIP(3); + SKIP_BLANKS; + + if (CMP7(CUR_PTR, 'I', 'N', 'C', 'L', 'U', 'D', 'E')) { + SKIP(7); + SKIP_BLANKS; + if (RAW != '[') { + xmlFatalErr(ctxt, XML_ERR_CONDSEC_INVALID, NULL); + xmlHaltParser(ctxt); + goto error; + } + if (ctxt->input->id != id) { + xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY, + "All markup of the conditional section is" + " not in the same entity\n"); + } + NEXT; + + if (inputIdsSize <= depth) { + int *tmp; + + inputIdsSize = (inputIdsSize == 0 ? 4 : inputIdsSize * 2); + tmp = (int *) xmlRealloc(inputIds, + inputIdsSize * sizeof(int)); + if (tmp == NULL) { + xmlErrMemory(ctxt, NULL); + goto error; + } + inputIds = tmp; + } + inputIds[depth] = id; + depth++; + } else if (CMP6(CUR_PTR, 'I', 'G', 'N', 'O', 'R', 'E')) { + int state; + xmlParserInputState instate; + size_t ignoreDepth = 0; + + SKIP(6); + SKIP_BLANKS; + if (RAW != '[') { + xmlFatalErr(ctxt, XML_ERR_CONDSEC_INVALID, NULL); + xmlHaltParser(ctxt); + goto error; + } + if (ctxt->input->id != id) { + xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY, + "All markup of the conditional section is" + " not in the same entity\n"); + } + NEXT; + + /* + * Parse up to the end of the conditional section but disable + * SAX event generating DTD building in the meantime + */ + state = ctxt->disableSAX; + instate = ctxt->instate; + if (ctxt->recovery == 0) ctxt->disableSAX = 1; + ctxt->instate = XML_PARSER_IGNORE; + + while (RAW != 0) { + if ((RAW == '<') && (NXT(1) == '!') && (NXT(2) == '[')) { + SKIP(3); + ignoreDepth++; + /* Check for integer overflow */ + if (ignoreDepth == 0) { + xmlErrMemory(ctxt, NULL); + goto error; + } + } else if ((RAW == ']') && (NXT(1) == ']') && + (NXT(2) == '>')) { + if (ignoreDepth == 0) + break; + SKIP(3); + ignoreDepth--; + } else { + NEXT; + } + } + + ctxt->disableSAX = state; + ctxt->instate = instate; + + if (RAW == 0) { + xmlFatalErr(ctxt, XML_ERR_CONDSEC_NOT_FINISHED, NULL); + goto error; + } + if (ctxt->input->id != id) { + xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY, + "All markup of the conditional section is" + " not in the same entity\n"); + } + SKIP(3); + } else { + xmlFatalErr(ctxt, XML_ERR_CONDSEC_INVALID_KEYWORD, NULL); + xmlHaltParser(ctxt); + goto error; + } + } else if ((depth > 0) && + (RAW == ']') && (NXT(1) == ']') && (NXT(2) == '>')) { + depth--; + if (ctxt->input->id != inputIds[depth]) { + xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY, + "All markup of the conditional section is not" + " in the same entity\n"); + } + SKIP(3); + } else { + const xmlChar *check = CUR_PTR; + unsigned int cons = ctxt->input->consumed; + + xmlParseMarkupDecl(ctxt); + + if ((CUR_PTR == check) && (cons == ctxt->input->consumed)) { + xmlFatalErr(ctxt, XML_ERR_EXT_SUBSET_NOT_FINISHED, NULL); + xmlHaltParser(ctxt); + goto error; + } + } + + if (depth == 0) + break; + + SKIP_BLANKS; + GROW; + } + +error: + xmlFree(inputIds); +} + +/** + * xmlParseMarkupDecl: + * @ctxt: an XML parser context + * + * parse Markup declarations + * + * [29] markupdecl ::= elementdecl | AttlistDecl | EntityDecl | + * NotationDecl | PI | Comment + * + * [ VC: Proper Declaration/PE Nesting ] + * Parameter-entity replacement text must be properly nested with + * markup declarations. That is to say, if either the first character + * or the last character of a markup declaration (markupdecl above) is + * contained in the replacement text for a parameter-entity reference, + * both must be contained in the same replacement text. + * + * [ WFC: PEs in Internal Subset ] + * In the internal DTD subset, parameter-entity references can occur + * only where markup declarations can occur, not within markup declarations. + * (This does not apply to references that occur in external parameter + * entities or to the external subset.) + */ +void +xmlParseMarkupDecl(xmlParserCtxtPtr ctxt) { + GROW; + if (CUR == '<') { + if (NXT(1) == '!') { + switch (NXT(2)) { + case 'E': + if (NXT(3) == 'L') + xmlParseElementDecl(ctxt); + else if (NXT(3) == 'N') + xmlParseEntityDecl(ctxt); + break; + case 'A': + xmlParseAttributeListDecl(ctxt); + break; + case 'N': + xmlParseNotationDecl(ctxt); + break; + case '-': + xmlParseComment(ctxt); + break; + default: + /* there is an error but it will be detected later */ + break; + } + } else if (NXT(1) == '?') { + xmlParsePI(ctxt); + } + } + + /* + * detect requirement to exit there and act accordingly + * and avoid having instate overridden later on + */ + if (ctxt->instate == XML_PARSER_EOF) + return; + + ctxt->instate = XML_PARSER_DTD; +} + +/** + * xmlParseTextDecl: + * @ctxt: an XML parser context + * + * parse an XML declaration header for external entities + * + * [77] TextDecl ::= '<?xml' VersionInfo? EncodingDecl S? '?>' + */ + +void +xmlParseTextDecl(xmlParserCtxtPtr ctxt) { + xmlChar *version; + const xmlChar *encoding; + + /* + * We know that '<?xml' is here. + */ + if ((CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) && (IS_BLANK_CH(NXT(5)))) { + SKIP(5); + } else { + xmlFatalErr(ctxt, XML_ERR_XMLDECL_NOT_STARTED, NULL); + return; + } + + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space needed after '<?xml'\n"); + } + + /* + * We may have the VersionInfo here. + */ + version = xmlParseVersionInfo(ctxt); + if (version == NULL) + version = xmlCharStrdup(XML_DEFAULT_VERSION); + else { + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Space needed here\n"); + } + } + ctxt->input->version = version; + + /* + * We must have the encoding declaration + */ + encoding = xmlParseEncodingDecl(ctxt); + if (ctxt->errNo == XML_ERR_UNSUPPORTED_ENCODING) { + /* + * The XML REC instructs us to stop parsing right here + */ + return; + } + if ((encoding == NULL) && (ctxt->errNo == XML_ERR_OK)) { + xmlFatalErrMsg(ctxt, XML_ERR_MISSING_ENCODING, + "Missing encoding in text declaration\n"); + } + + SKIP_BLANKS; + if ((RAW == '?') && (NXT(1) == '>')) { + SKIP(2); + } else if (RAW == '>') { + /* Deprecated old WD ... */ + xmlFatalErr(ctxt, XML_ERR_XMLDECL_NOT_FINISHED, NULL); + NEXT; + } else { + xmlFatalErr(ctxt, XML_ERR_XMLDECL_NOT_FINISHED, NULL); + MOVETO_ENDTAG(CUR_PTR); + NEXT; + } +} + +/** + * xmlParseExternalSubset: + * @ctxt: an XML parser context + * @ExternalID: the external identifier + * @SystemID: the system identifier (or URL) + * + * parse Markup declarations from an external subset + * + * [30] extSubset ::= textDecl? extSubsetDecl + * + * [31] extSubsetDecl ::= (markupdecl | conditionalSect | PEReference | S) * + */ +void +xmlParseExternalSubset(xmlParserCtxtPtr ctxt, const xmlChar *ExternalID, + const xmlChar *SystemID) { + xmlDetectSAX2(ctxt); + GROW; + + if ((ctxt->encoding == NULL) && + (ctxt->input->end - ctxt->input->cur >= 4)) { + xmlChar start[4]; + xmlCharEncoding enc; + + start[0] = RAW; + start[1] = NXT(1); + start[2] = NXT(2); + start[3] = NXT(3); + enc = xmlDetectCharEncoding(start, 4); + if (enc != XML_CHAR_ENCODING_NONE) + xmlSwitchEncoding(ctxt, enc); + } + + if (CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) { + xmlParseTextDecl(ctxt); + if (ctxt->errNo == XML_ERR_UNSUPPORTED_ENCODING) { + /* + * The XML REC instructs us to stop parsing right here + */ + xmlHaltParser(ctxt); + return; + } + } + if (ctxt->myDoc == NULL) { + ctxt->myDoc = xmlNewDoc(BAD_CAST "1.0"); + if (ctxt->myDoc == NULL) { + xmlErrMemory(ctxt, "New Doc failed"); + return; + } + ctxt->myDoc->properties = XML_DOC_INTERNAL; + } + if ((ctxt->myDoc != NULL) && (ctxt->myDoc->intSubset == NULL)) + xmlCreateIntSubset(ctxt->myDoc, NULL, ExternalID, SystemID); + + ctxt->instate = XML_PARSER_DTD; + ctxt->external = 1; + SKIP_BLANKS; + while (((RAW == '<') && (NXT(1) == '?')) || + ((RAW == '<') && (NXT(1) == '!')) || + (RAW == '%')) { + const xmlChar *check = CUR_PTR; + unsigned int cons = ctxt->input->consumed; + + GROW; + if ((RAW == '<') && (NXT(1) == '!') && (NXT(2) == '[')) { + xmlParseConditionalSections(ctxt); + } else + xmlParseMarkupDecl(ctxt); + SKIP_BLANKS; + + if ((CUR_PTR == check) && (cons == ctxt->input->consumed)) { + xmlFatalErr(ctxt, XML_ERR_EXT_SUBSET_NOT_FINISHED, NULL); + break; + } + } + + if (RAW != 0) { + xmlFatalErr(ctxt, XML_ERR_EXT_SUBSET_NOT_FINISHED, NULL); + } + +} + +/** + * xmlParseReference: + * @ctxt: an XML parser context + * + * parse and handle entity references in content, depending on the SAX + * interface, this may end-up in a call to character() if this is a + * CharRef, a predefined entity, if there is no reference() callback. + * or if the parser was asked to switch to that mode. + * + * [67] Reference ::= EntityRef | CharRef + */ +void +xmlParseReference(xmlParserCtxtPtr ctxt) { + xmlEntityPtr ent; + xmlChar *val; + int was_checked; + xmlNodePtr list = NULL; + xmlParserErrors ret = XML_ERR_OK; + + + if (RAW != '&') + return; + + /* + * Simple case of a CharRef + */ + if (NXT(1) == '#') { + int i = 0; + xmlChar out[16]; + int hex = NXT(2); + int value = xmlParseCharRef(ctxt); + + if (value == 0) + return; + if (ctxt->charset != XML_CHAR_ENCODING_UTF8) { + /* + * So we are using non-UTF-8 buffers + * Check that the char fit on 8bits, if not + * generate a CharRef. + */ + if (value <= 0xFF) { + out[0] = value; + out[1] = 0; + if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL) && + (!ctxt->disableSAX)) + ctxt->sax->characters(ctxt->userData, out, 1); + } else { + if ((hex == 'x') || (hex == 'X')) + snprintf((char *)out, sizeof(out), "#x%X", value); + else + snprintf((char *)out, sizeof(out), "#%d", value); + if ((ctxt->sax != NULL) && (ctxt->sax->reference != NULL) && + (!ctxt->disableSAX)) + ctxt->sax->reference(ctxt->userData, out); + } + } else { + /* + * Just encode the value in UTF-8 + */ + COPY_BUF(0 ,out, i, value); + out[i] = 0; + if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL) && + (!ctxt->disableSAX)) + ctxt->sax->characters(ctxt->userData, out, i); + } + return; + } + + /* + * We are seeing an entity reference + */ + ent = xmlParseEntityRef(ctxt); + if (ent == NULL) return; + if (!ctxt->wellFormed) + return; + was_checked = ent->checked; + + /* special case of predefined entities */ + if ((ent->name == NULL) || + (ent->etype == XML_INTERNAL_PREDEFINED_ENTITY)) { + val = ent->content; + if (val == NULL) return; + /* + * inline the entity. + */ + if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL) && + (!ctxt->disableSAX)) + ctxt->sax->characters(ctxt->userData, val, xmlStrlen(val)); + return; + } + + /* + * The first reference to the entity trigger a parsing phase + * where the ent->children is filled with the result from + * the parsing. + * Note: external parsed entities will not be loaded, it is not + * required for a non-validating parser, unless the parsing option + * of validating, or substituting entities were given. Doing so is + * far more secure as the parser will only process data coming from + * the document entity by default. + */ + if (((ent->checked == 0) || + ((ent->children == NULL) && (ctxt->options & XML_PARSE_NOENT))) && + ((ent->etype != XML_EXTERNAL_GENERAL_PARSED_ENTITY) || + (ctxt->options & (XML_PARSE_NOENT | XML_PARSE_DTDVALID)))) { + unsigned long oldnbent = ctxt->nbentities, diff; + + /* + * This is a bit hackish but this seems the best + * way to make sure both SAX and DOM entity support + * behaves okay. + */ + void *user_data; + if (ctxt->userData == ctxt) + user_data = NULL; + else + user_data = ctxt->userData; + + /* + * Check that this entity is well formed + * 4.3.2: An internal general parsed entity is well-formed + * if its replacement text matches the production labeled + * content. + */ + if (ent->etype == XML_INTERNAL_GENERAL_ENTITY) { + ctxt->depth++; + ret = xmlParseBalancedChunkMemoryInternal(ctxt, ent->content, + user_data, &list); + ctxt->depth--; + + } else if (ent->etype == XML_EXTERNAL_GENERAL_PARSED_ENTITY) { + ctxt->depth++; + ret = xmlParseExternalEntityPrivate(ctxt->myDoc, ctxt, ctxt->sax, + user_data, ctxt->depth, ent->URI, + ent->ExternalID, &list); + ctxt->depth--; + } else { + ret = XML_ERR_ENTITY_PE_INTERNAL; + xmlErrMsgStr(ctxt, XML_ERR_INTERNAL_ERROR, + "invalid entity type found\n", NULL); + } + + /* + * Store the number of entities needing parsing for this entity + * content and do checkings + */ + diff = ctxt->nbentities - oldnbent + 1; + if (diff > INT_MAX / 2) + diff = INT_MAX / 2; + ent->checked = diff * 2; + if ((ent->content != NULL) && (xmlStrchr(ent->content, '<'))) + ent->checked |= 1; + if (ret == XML_ERR_ENTITY_LOOP) { + xmlFatalErr(ctxt, XML_ERR_ENTITY_LOOP, NULL); + xmlFreeNodeList(list); + return; + } + if (xmlParserEntityCheck(ctxt, 0, ent, 0)) { + xmlFreeNodeList(list); + return; + } + + if ((ret == XML_ERR_OK) && (list != NULL)) { + if (((ent->etype == XML_INTERNAL_GENERAL_ENTITY) || + (ent->etype == XML_EXTERNAL_GENERAL_PARSED_ENTITY))&& + (ent->children == NULL)) { + ent->children = list; + if (ctxt->replaceEntities) { + /* + * Prune it directly in the generated document + * except for single text nodes. + */ + if (((list->type == XML_TEXT_NODE) && + (list->next == NULL)) || + (ctxt->parseMode == XML_PARSE_READER)) { + list->parent = (xmlNodePtr) ent; + list = NULL; + ent->owner = 1; + } else { + ent->owner = 0; + while (list != NULL) { + list->parent = (xmlNodePtr) ctxt->node; + list->doc = ctxt->myDoc; + if (list->next == NULL) + ent->last = list; + list = list->next; + } + list = ent->children; +#ifdef LIBXML_LEGACY_ENABLED + if (ent->etype == XML_EXTERNAL_GENERAL_PARSED_ENTITY) + xmlAddEntityReference(ent, list, NULL); +#endif /* LIBXML_LEGACY_ENABLED */ + } + } else { + ent->owner = 1; + while (list != NULL) { + list->parent = (xmlNodePtr) ent; + xmlSetTreeDoc(list, ent->doc); + if (list->next == NULL) + ent->last = list; + list = list->next; + } + } + } else { + xmlFreeNodeList(list); + list = NULL; + } + } else if ((ret != XML_ERR_OK) && + (ret != XML_WAR_UNDECLARED_ENTITY)) { + xmlFatalErrMsgStr(ctxt, XML_ERR_UNDECLARED_ENTITY, + "Entity '%s' failed to parse\n", ent->name); + if (ent->content != NULL) + ent->content[0] = 0; + xmlParserEntityCheck(ctxt, 0, ent, 0); + } else if (list != NULL) { + xmlFreeNodeList(list); + list = NULL; + } + if (ent->checked == 0) + ent->checked = 2; + + /* Prevent entity from being parsed and expanded twice (Bug 760367). */ + was_checked = 0; + } else if (ent->checked != 1) { + ctxt->nbentities += ent->checked / 2; + } + + /* + * Now that the entity content has been gathered + * provide it to the application, this can take different forms based + * on the parsing modes. + */ + if (ent->children == NULL) { + /* + * Probably running in SAX mode and the callbacks don't + * build the entity content. So unless we already went + * though parsing for first checking go though the entity + * content to generate callbacks associated to the entity + */ + if (was_checked != 0) { + void *user_data; + /* + * This is a bit hackish but this seems the best + * way to make sure both SAX and DOM entity support + * behaves okay. + */ + if (ctxt->userData == ctxt) + user_data = NULL; + else + user_data = ctxt->userData; + + if (ent->etype == XML_INTERNAL_GENERAL_ENTITY) { + ctxt->depth++; + ret = xmlParseBalancedChunkMemoryInternal(ctxt, + ent->content, user_data, NULL); + ctxt->depth--; + } else if (ent->etype == + XML_EXTERNAL_GENERAL_PARSED_ENTITY) { + ctxt->depth++; + ret = xmlParseExternalEntityPrivate(ctxt->myDoc, ctxt, + ctxt->sax, user_data, ctxt->depth, + ent->URI, ent->ExternalID, NULL); + ctxt->depth--; + } else { + ret = XML_ERR_ENTITY_PE_INTERNAL; + xmlErrMsgStr(ctxt, XML_ERR_INTERNAL_ERROR, + "invalid entity type found\n", NULL); + } + if (ret == XML_ERR_ENTITY_LOOP) { + xmlFatalErr(ctxt, XML_ERR_ENTITY_LOOP, NULL); + return; + } + } + if ((ctxt->sax != NULL) && (ctxt->sax->reference != NULL) && + (ctxt->replaceEntities == 0) && (!ctxt->disableSAX)) { + /* + * Entity reference callback comes second, it's somewhat + * superfluous but a compatibility to historical behaviour + */ + ctxt->sax->reference(ctxt->userData, ent->name); + } + return; + } + + /* + * If we didn't get any children for the entity being built + */ + if ((ctxt->sax != NULL) && (ctxt->sax->reference != NULL) && + (ctxt->replaceEntities == 0) && (!ctxt->disableSAX)) { + /* + * Create a node. + */ + ctxt->sax->reference(ctxt->userData, ent->name); + return; + } + + if ((ctxt->replaceEntities) || (ent->children == NULL)) { + /* + * There is a problem on the handling of _private for entities + * (bug 155816): Should we copy the content of the field from + * the entity (possibly overwriting some value set by the user + * when a copy is created), should we leave it alone, or should + * we try to take care of different situations? The problem + * is exacerbated by the usage of this field by the xmlReader. + * To fix this bug, we look at _private on the created node + * and, if it's NULL, we copy in whatever was in the entity. + * If it's not NULL we leave it alone. This is somewhat of a + * hack - maybe we should have further tests to determine + * what to do. + */ + if ((ctxt->node != NULL) && (ent->children != NULL)) { + /* + * Seems we are generating the DOM content, do + * a simple tree copy for all references except the first + * In the first occurrence list contains the replacement. + */ + if (((list == NULL) && (ent->owner == 0)) || + (ctxt->parseMode == XML_PARSE_READER)) { + xmlNodePtr nw = NULL, cur, firstChild = NULL; + + /* + * We are copying here, make sure there is no abuse + */ + ctxt->sizeentcopy += ent->length + 5; + if (xmlParserEntityCheck(ctxt, 0, ent, ctxt->sizeentcopy)) + return; + + /* + * when operating on a reader, the entities definitions + * are always owning the entities subtree. + if (ctxt->parseMode == XML_PARSE_READER) + ent->owner = 1; + */ + + cur = ent->children; + while (cur != NULL) { + nw = xmlDocCopyNode(cur, ctxt->myDoc, 1); + if (nw != NULL) { + if (nw->_private == NULL) + nw->_private = cur->_private; + if (firstChild == NULL){ + firstChild = nw; + } + nw = xmlAddChild(ctxt->node, nw); + } + if (cur == ent->last) { + /* + * needed to detect some strange empty + * node cases in the reader tests + */ + if ((ctxt->parseMode == XML_PARSE_READER) && + (nw != NULL) && + (nw->type == XML_ELEMENT_NODE) && + (nw->children == NULL)) + nw->extra = 1; + + break; + } + cur = cur->next; + } +#ifdef LIBXML_LEGACY_ENABLED + if (ent->etype == XML_EXTERNAL_GENERAL_PARSED_ENTITY) + xmlAddEntityReference(ent, firstChild, nw); +#endif /* LIBXML_LEGACY_ENABLED */ + } else if ((list == NULL) || (ctxt->inputNr > 0)) { + xmlNodePtr nw = NULL, cur, next, last, + firstChild = NULL; + + /* + * We are copying here, make sure there is no abuse + */ + ctxt->sizeentcopy += ent->length + 5; + if (xmlParserEntityCheck(ctxt, 0, ent, ctxt->sizeentcopy)) + return; + + /* + * Copy the entity child list and make it the new + * entity child list. The goal is to make sure any + * ID or REF referenced will be the one from the + * document content and not the entity copy. + */ + cur = ent->children; + ent->children = NULL; + last = ent->last; + ent->last = NULL; + while (cur != NULL) { + next = cur->next; + cur->next = NULL; + cur->parent = NULL; + nw = xmlDocCopyNode(cur, ctxt->myDoc, 1); + if (nw != NULL) { + if (nw->_private == NULL) + nw->_private = cur->_private; + if (firstChild == NULL){ + firstChild = cur; + } + xmlAddChild((xmlNodePtr) ent, nw); + xmlAddChild(ctxt->node, cur); + } + if (cur == last) + break; + cur = next; + } + if (ent->owner == 0) + ent->owner = 1; +#ifdef LIBXML_LEGACY_ENABLED + if (ent->etype == XML_EXTERNAL_GENERAL_PARSED_ENTITY) + xmlAddEntityReference(ent, firstChild, nw); +#endif /* LIBXML_LEGACY_ENABLED */ + } else { + const xmlChar *nbktext; + + /* + * the name change is to avoid coalescing of the + * node with a possible previous text one which + * would make ent->children a dangling pointer + */ + nbktext = xmlDictLookup(ctxt->dict, BAD_CAST "nbktext", + -1); + if (ent->children->type == XML_TEXT_NODE) + ent->children->name = nbktext; + if ((ent->last != ent->children) && + (ent->last->type == XML_TEXT_NODE)) + ent->last->name = nbktext; + xmlAddChildList(ctxt->node, ent->children); + } + + /* + * This is to avoid a nasty side effect, see + * characters() in SAX.c + */ + ctxt->nodemem = 0; + ctxt->nodelen = 0; + return; + } + } +} + +/** + * xmlParseEntityRef: + * @ctxt: an XML parser context + * + * parse ENTITY references declarations + * + * [68] EntityRef ::= '&' Name ';' + * + * [ WFC: Entity Declared ] + * In a document without any DTD, a document with only an internal DTD + * subset which contains no parameter entity references, or a document + * with "standalone='yes'", the Name given in the entity reference + * must match that in an entity declaration, except that well-formed + * documents need not declare any of the following entities: amp, lt, + * gt, apos, quot. The declaration of a parameter entity must precede + * any reference to it. Similarly, the declaration of a general entity + * must precede any reference to it which appears in a default value in an + * attribute-list declaration. Note that if entities are declared in the + * external subset or in external parameter entities, a non-validating + * processor is not obligated to read and process their declarations; + * for such documents, the rule that an entity must be declared is a + * well-formedness constraint only if standalone='yes'. + * + * [ WFC: Parsed Entity ] + * An entity reference must not contain the name of an unparsed entity + * + * Returns the xmlEntityPtr if found, or NULL otherwise. + */ +xmlEntityPtr +xmlParseEntityRef(xmlParserCtxtPtr ctxt) { + const xmlChar *name; + xmlEntityPtr ent = NULL; + + GROW; + if (ctxt->instate == XML_PARSER_EOF) + return(NULL); + + if (RAW != '&') + return(NULL); + NEXT; + name = xmlParseName(ctxt); + if (name == NULL) { + xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED, + "xmlParseEntityRef: no name\n"); + return(NULL); + } + if (RAW != ';') { + xmlFatalErr(ctxt, XML_ERR_ENTITYREF_SEMICOL_MISSING, NULL); + return(NULL); + } + NEXT; + + /* + * Predefined entities override any extra definition + */ + if ((ctxt->options & XML_PARSE_OLDSAX) == 0) { + ent = xmlGetPredefinedEntity(name); + if (ent != NULL) + return(ent); + } + + /* + * Increase the number of entity references parsed + */ + ctxt->nbentities++; + + /* + * Ask first SAX for entity resolution, otherwise try the + * entities which may have stored in the parser context. + */ + if (ctxt->sax != NULL) { + if (ctxt->sax->getEntity != NULL) + ent = ctxt->sax->getEntity(ctxt->userData, name); + if ((ctxt->wellFormed == 1 ) && (ent == NULL) && + (ctxt->options & XML_PARSE_OLDSAX)) + ent = xmlGetPredefinedEntity(name); + if ((ctxt->wellFormed == 1 ) && (ent == NULL) && + (ctxt->userData==ctxt)) { + ent = xmlSAX2GetEntity(ctxt, name); + } + } + if (ctxt->instate == XML_PARSER_EOF) + return(NULL); + /* + * [ WFC: Entity Declared ] + * In a document without any DTD, a document with only an + * internal DTD subset which contains no parameter entity + * references, or a document with "standalone='yes'", the + * Name given in the entity reference must match that in an + * entity declaration, except that well-formed documents + * need not declare any of the following entities: amp, lt, + * gt, apos, quot. + * The declaration of a parameter entity must precede any + * reference to it. + * Similarly, the declaration of a general entity must + * precede any reference to it which appears in a default + * value in an attribute-list declaration. Note that if + * entities are declared in the external subset or in + * external parameter entities, a non-validating processor + * is not obligated to read and process their declarations; + * for such documents, the rule that an entity must be + * declared is a well-formedness constraint only if + * standalone='yes'. + */ + if (ent == NULL) { + if ((ctxt->standalone == 1) || + ((ctxt->hasExternalSubset == 0) && + (ctxt->hasPErefs == 0))) { + xmlFatalErrMsgStr(ctxt, XML_ERR_UNDECLARED_ENTITY, + "Entity '%s' not defined\n", name); + } else { + xmlErrMsgStr(ctxt, XML_WAR_UNDECLARED_ENTITY, + "Entity '%s' not defined\n", name); + if ((ctxt->inSubset == 0) && + (ctxt->sax != NULL) && + (ctxt->sax->reference != NULL)) { + ctxt->sax->reference(ctxt->userData, name); + } + } + xmlParserEntityCheck(ctxt, 0, ent, 0); + ctxt->valid = 0; + } + + /* + * [ WFC: Parsed Entity ] + * An entity reference must not contain the name of an + * unparsed entity + */ + else if (ent->etype == XML_EXTERNAL_GENERAL_UNPARSED_ENTITY) { + xmlFatalErrMsgStr(ctxt, XML_ERR_UNPARSED_ENTITY, + "Entity reference to unparsed entity %s\n", name); + } + + /* + * [ WFC: No External Entity References ] + * Attribute values cannot contain direct or indirect + * entity references to external entities. + */ + else if ((ctxt->instate == XML_PARSER_ATTRIBUTE_VALUE) && + (ent->etype == XML_EXTERNAL_GENERAL_PARSED_ENTITY)) { + xmlFatalErrMsgStr(ctxt, XML_ERR_ENTITY_IS_EXTERNAL, + "Attribute references external entity '%s'\n", name); + } + /* + * [ WFC: No < in Attribute Values ] + * The replacement text of any entity referred to directly or + * indirectly in an attribute value (other than "<") must + * not contain a <. + */ + else if ((ctxt->instate == XML_PARSER_ATTRIBUTE_VALUE) && + (ent != NULL) && + (ent->etype != XML_INTERNAL_PREDEFINED_ENTITY)) { + if (((ent->checked & 1) || (ent->checked == 0)) && + (ent->content != NULL) && (xmlStrchr(ent->content, '<'))) { + xmlFatalErrMsgStr(ctxt, XML_ERR_LT_IN_ATTRIBUTE, + "'<' in entity '%s' is not allowed in attributes values\n", name); + } + } + + /* + * Internal check, no parameter entities here ... + */ + else { + switch (ent->etype) { + case XML_INTERNAL_PARAMETER_ENTITY: + case XML_EXTERNAL_PARAMETER_ENTITY: + xmlFatalErrMsgStr(ctxt, XML_ERR_ENTITY_IS_PARAMETER, + "Attempt to reference the parameter entity '%s'\n", + name); + break; + default: + break; + } + } + + /* + * [ WFC: No Recursion ] + * A parsed entity must not contain a recursive reference + * to itself, either directly or indirectly. + * Done somewhere else + */ + return(ent); +} + +/** + * xmlParseStringEntityRef: + * @ctxt: an XML parser context + * @str: a pointer to an index in the string + * + * parse ENTITY references declarations, but this version parses it from + * a string value. + * + * [68] EntityRef ::= '&' Name ';' + * + * [ WFC: Entity Declared ] + * In a document without any DTD, a document with only an internal DTD + * subset which contains no parameter entity references, or a document + * with "standalone='yes'", the Name given in the entity reference + * must match that in an entity declaration, except that well-formed + * documents need not declare any of the following entities: amp, lt, + * gt, apos, quot. The declaration of a parameter entity must precede + * any reference to it. Similarly, the declaration of a general entity + * must precede any reference to it which appears in a default value in an + * attribute-list declaration. Note that if entities are declared in the + * external subset or in external parameter entities, a non-validating + * processor is not obligated to read and process their declarations; + * for such documents, the rule that an entity must be declared is a + * well-formedness constraint only if standalone='yes'. + * + * [ WFC: Parsed Entity ] + * An entity reference must not contain the name of an unparsed entity + * + * Returns the xmlEntityPtr if found, or NULL otherwise. The str pointer + * is updated to the current location in the string. + */ +static xmlEntityPtr +xmlParseStringEntityRef(xmlParserCtxtPtr ctxt, const xmlChar ** str) { + xmlChar *name; + const xmlChar *ptr; + xmlChar cur; + xmlEntityPtr ent = NULL; + + if ((str == NULL) || (*str == NULL)) + return(NULL); + ptr = *str; + cur = *ptr; + if (cur != '&') + return(NULL); + + ptr++; + name = xmlParseStringName(ctxt, &ptr); + if (name == NULL) { + xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED, + "xmlParseStringEntityRef: no name\n"); + *str = ptr; + return(NULL); + } + if (*ptr != ';') { + xmlFatalErr(ctxt, XML_ERR_ENTITYREF_SEMICOL_MISSING, NULL); + xmlFree(name); + *str = ptr; + return(NULL); + } + ptr++; + + + /* + * Predefined entities override any extra definition + */ + if ((ctxt->options & XML_PARSE_OLDSAX) == 0) { + ent = xmlGetPredefinedEntity(name); + if (ent != NULL) { + xmlFree(name); + *str = ptr; + return(ent); + } + } + + /* + * Increase the number of entity references parsed + */ + ctxt->nbentities++; + + /* + * Ask first SAX for entity resolution, otherwise try the + * entities which may have stored in the parser context. + */ + if (ctxt->sax != NULL) { + if (ctxt->sax->getEntity != NULL) + ent = ctxt->sax->getEntity(ctxt->userData, name); + if ((ent == NULL) && (ctxt->options & XML_PARSE_OLDSAX)) + ent = xmlGetPredefinedEntity(name); + if ((ent == NULL) && (ctxt->userData==ctxt)) { + ent = xmlSAX2GetEntity(ctxt, name); + } + } + if (ctxt->instate == XML_PARSER_EOF) { + xmlFree(name); + return(NULL); + } + + /* + * [ WFC: Entity Declared ] + * In a document without any DTD, a document with only an + * internal DTD subset which contains no parameter entity + * references, or a document with "standalone='yes'", the + * Name given in the entity reference must match that in an + * entity declaration, except that well-formed documents + * need not declare any of the following entities: amp, lt, + * gt, apos, quot. + * The declaration of a parameter entity must precede any + * reference to it. + * Similarly, the declaration of a general entity must + * precede any reference to it which appears in a default + * value in an attribute-list declaration. Note that if + * entities are declared in the external subset or in + * external parameter entities, a non-validating processor + * is not obligated to read and process their declarations; + * for such documents, the rule that an entity must be + * declared is a well-formedness constraint only if + * standalone='yes'. + */ + if (ent == NULL) { + if ((ctxt->standalone == 1) || + ((ctxt->hasExternalSubset == 0) && + (ctxt->hasPErefs == 0))) { + xmlFatalErrMsgStr(ctxt, XML_ERR_UNDECLARED_ENTITY, + "Entity '%s' not defined\n", name); + } else { + xmlErrMsgStr(ctxt, XML_WAR_UNDECLARED_ENTITY, + "Entity '%s' not defined\n", + name); + } + xmlParserEntityCheck(ctxt, 0, ent, 0); + /* TODO ? check regressions ctxt->valid = 0; */ + } + + /* + * [ WFC: Parsed Entity ] + * An entity reference must not contain the name of an + * unparsed entity + */ + else if (ent->etype == XML_EXTERNAL_GENERAL_UNPARSED_ENTITY) { + xmlFatalErrMsgStr(ctxt, XML_ERR_UNPARSED_ENTITY, + "Entity reference to unparsed entity %s\n", name); + } + + /* + * [ WFC: No External Entity References ] + * Attribute values cannot contain direct or indirect + * entity references to external entities. + */ + else if ((ctxt->instate == XML_PARSER_ATTRIBUTE_VALUE) && + (ent->etype == XML_EXTERNAL_GENERAL_PARSED_ENTITY)) { + xmlFatalErrMsgStr(ctxt, XML_ERR_ENTITY_IS_EXTERNAL, + "Attribute references external entity '%s'\n", name); + } + /* + * [ WFC: No < in Attribute Values ] + * The replacement text of any entity referred to directly or + * indirectly in an attribute value (other than "<") must + * not contain a <. + */ + else if ((ctxt->instate == XML_PARSER_ATTRIBUTE_VALUE) && + (ent != NULL) && (ent->content != NULL) && + (ent->etype != XML_INTERNAL_PREDEFINED_ENTITY) && + (xmlStrchr(ent->content, '<'))) { + xmlFatalErrMsgStr(ctxt, XML_ERR_LT_IN_ATTRIBUTE, + "'<' in entity '%s' is not allowed in attributes values\n", + name); + } + + /* + * Internal check, no parameter entities here ... + */ + else { + switch (ent->etype) { + case XML_INTERNAL_PARAMETER_ENTITY: + case XML_EXTERNAL_PARAMETER_ENTITY: + xmlFatalErrMsgStr(ctxt, XML_ERR_ENTITY_IS_PARAMETER, + "Attempt to reference the parameter entity '%s'\n", + name); + break; + default: + break; + } + } + + /* + * [ WFC: No Recursion ] + * A parsed entity must not contain a recursive reference + * to itself, either directly or indirectly. + * Done somewhere else + */ + + xmlFree(name); + *str = ptr; + return(ent); +} + +/** + * xmlParsePEReference: + * @ctxt: an XML parser context + * + * parse PEReference declarations + * The entity content is handled directly by pushing it's content as + * a new input stream. + * + * [69] PEReference ::= '%' Name ';' + * + * [ WFC: No Recursion ] + * A parsed entity must not contain a recursive + * reference to itself, either directly or indirectly. + * + * [ WFC: Entity Declared ] + * In a document without any DTD, a document with only an internal DTD + * subset which contains no parameter entity references, or a document + * with "standalone='yes'", ... ... The declaration of a parameter + * entity must precede any reference to it... + * + * [ VC: Entity Declared ] + * In a document with an external subset or external parameter entities + * with "standalone='no'", ... ... The declaration of a parameter entity + * must precede any reference to it... + * + * [ WFC: In DTD ] + * Parameter-entity references may only appear in the DTD. + * NOTE: misleading but this is handled. + */ +void +xmlParsePEReference(xmlParserCtxtPtr ctxt) +{ + const xmlChar *name; + xmlEntityPtr entity = NULL; + xmlParserInputPtr input; + + if (RAW != '%') + return; + NEXT; + name = xmlParseName(ctxt); + if (name == NULL) { + xmlFatalErrMsg(ctxt, XML_ERR_PEREF_NO_NAME, "PEReference: no name\n"); + return; + } + if (xmlParserDebugEntities) + xmlGenericError(xmlGenericErrorContext, + "PEReference: %s\n", name); + if (RAW != ';') { + xmlFatalErr(ctxt, XML_ERR_PEREF_SEMICOL_MISSING, NULL); + return; + } + + NEXT; + + /* + * Increase the number of entity references parsed + */ + ctxt->nbentities++; + + /* + * Request the entity from SAX + */ + if ((ctxt->sax != NULL) && + (ctxt->sax->getParameterEntity != NULL)) + entity = ctxt->sax->getParameterEntity(ctxt->userData, name); + if (ctxt->instate == XML_PARSER_EOF) + return; + if (entity == NULL) { + /* + * [ WFC: Entity Declared ] + * In a document without any DTD, a document with only an + * internal DTD subset which contains no parameter entity + * references, or a document with "standalone='yes'", ... + * ... The declaration of a parameter entity must precede + * any reference to it... + */ + if ((ctxt->standalone == 1) || + ((ctxt->hasExternalSubset == 0) && + (ctxt->hasPErefs == 0))) { + xmlFatalErrMsgStr(ctxt, XML_ERR_UNDECLARED_ENTITY, + "PEReference: %%%s; not found\n", + name); + } else { + /* + * [ VC: Entity Declared ] + * In a document with an external subset or external + * parameter entities with "standalone='no'", ... + * ... The declaration of a parameter entity must + * precede any reference to it... + */ + if ((ctxt->validate) && (ctxt->vctxt.error != NULL)) { + xmlValidityError(ctxt, XML_WAR_UNDECLARED_ENTITY, + "PEReference: %%%s; not found\n", + name, NULL); + } else + xmlWarningMsg(ctxt, XML_WAR_UNDECLARED_ENTITY, + "PEReference: %%%s; not found\n", + name, NULL); + ctxt->valid = 0; + } + xmlParserEntityCheck(ctxt, 0, NULL, 0); + } else { + /* + * Internal checking in case the entity quest barfed + */ + if ((entity->etype != XML_INTERNAL_PARAMETER_ENTITY) && + (entity->etype != XML_EXTERNAL_PARAMETER_ENTITY)) { + xmlWarningMsg(ctxt, XML_WAR_UNDECLARED_ENTITY, + "Internal: %%%s; is not a parameter entity\n", + name, NULL); + } else { + xmlChar start[4]; + xmlCharEncoding enc; + + if ((entity->etype == XML_EXTERNAL_PARAMETER_ENTITY) && + ((ctxt->options & XML_PARSE_NOENT) == 0) && + ((ctxt->options & XML_PARSE_DTDVALID) == 0) && + ((ctxt->options & XML_PARSE_DTDLOAD) == 0) && + ((ctxt->options & XML_PARSE_DTDATTR) == 0) && + (ctxt->replaceEntities == 0) && + (ctxt->validate == 0)) + return; + + input = xmlNewEntityInputStream(ctxt, entity); + if (xmlPushInput(ctxt, input) < 0) { + xmlFreeInputStream(input); + return; + } + + if (entity->etype == XML_EXTERNAL_PARAMETER_ENTITY) { + /* + * Get the 4 first bytes and decode the charset + * if enc != XML_CHAR_ENCODING_NONE + * plug some encoding conversion routines. + * Note that, since we may have some non-UTF8 + * encoding (like UTF16, bug 135229), the 'length' + * is not known, but we can calculate based upon + * the amount of data in the buffer. + */ + GROW + if (ctxt->instate == XML_PARSER_EOF) + return; + if ((ctxt->input->end - ctxt->input->cur)>=4) { + start[0] = RAW; + start[1] = NXT(1); + start[2] = NXT(2); + start[3] = NXT(3); + enc = xmlDetectCharEncoding(start, 4); + if (enc != XML_CHAR_ENCODING_NONE) { + xmlSwitchEncoding(ctxt, enc); + } + } + + if ((CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) && + (IS_BLANK_CH(NXT(5)))) { + xmlParseTextDecl(ctxt); + } + } + } + } + ctxt->hasPErefs = 1; +} + +/** + * xmlLoadEntityContent: + * @ctxt: an XML parser context + * @entity: an unloaded system entity + * + * Load the original content of the given system entity from the + * ExternalID/SystemID given. This is to be used for Included in Literal + * http://www.w3.org/TR/REC-xml/#inliteral processing of entities references + * + * Returns 0 in case of success and -1 in case of failure + */ +static int +xmlLoadEntityContent(xmlParserCtxtPtr ctxt, xmlEntityPtr entity) { + xmlParserInputPtr input; + xmlBufferPtr buf; + int l, c; + int count = 0; + + if ((ctxt == NULL) || (entity == NULL) || + ((entity->etype != XML_EXTERNAL_PARAMETER_ENTITY) && + (entity->etype != XML_EXTERNAL_GENERAL_PARSED_ENTITY)) || + (entity->content != NULL)) { + xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR, + "xmlLoadEntityContent parameter error"); + return(-1); + } + + if (xmlParserDebugEntities) + xmlGenericError(xmlGenericErrorContext, + "Reading %s entity content input\n", entity->name); + + buf = xmlBufferCreate(); + if (buf == NULL) { + xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR, + "xmlLoadEntityContent parameter error"); + return(-1); + } + + input = xmlNewEntityInputStream(ctxt, entity); + if (input == NULL) { + xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR, + "xmlLoadEntityContent input error"); + xmlBufferFree(buf); + return(-1); + } + + /* + * Push the entity as the current input, read char by char + * saving to the buffer until the end of the entity or an error + */ + if (xmlPushInput(ctxt, input) < 0) { + xmlBufferFree(buf); + return(-1); + } + + GROW; + c = CUR_CHAR(l); + while ((ctxt->input == input) && (ctxt->input->cur < ctxt->input->end) && + (IS_CHAR(c))) { + xmlBufferAdd(buf, ctxt->input->cur, l); + if (count++ > XML_PARSER_CHUNK_SIZE) { + count = 0; + GROW; + if (ctxt->instate == XML_PARSER_EOF) { + xmlBufferFree(buf); + return(-1); + } + } + NEXTL(l); + c = CUR_CHAR(l); + if (c == 0) { + count = 0; + GROW; + if (ctxt->instate == XML_PARSER_EOF) { + xmlBufferFree(buf); + return(-1); + } + c = CUR_CHAR(l); + } + } + + if ((ctxt->input == input) && (ctxt->input->cur >= ctxt->input->end)) { + xmlPopInput(ctxt); + } else if (!IS_CHAR(c)) { + xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR, + "xmlLoadEntityContent: invalid char value %d\n", + c); + xmlBufferFree(buf); + return(-1); + } + entity->content = buf->content; + buf->content = NULL; + xmlBufferFree(buf); + + return(0); +} + +/** + * xmlParseStringPEReference: + * @ctxt: an XML parser context + * @str: a pointer to an index in the string + * + * parse PEReference declarations + * + * [69] PEReference ::= '%' Name ';' + * + * [ WFC: No Recursion ] + * A parsed entity must not contain a recursive + * reference to itself, either directly or indirectly. + * + * [ WFC: Entity Declared ] + * In a document without any DTD, a document with only an internal DTD + * subset which contains no parameter entity references, or a document + * with "standalone='yes'", ... ... The declaration of a parameter + * entity must precede any reference to it... + * + * [ VC: Entity Declared ] + * In a document with an external subset or external parameter entities + * with "standalone='no'", ... ... The declaration of a parameter entity + * must precede any reference to it... + * + * [ WFC: In DTD ] + * Parameter-entity references may only appear in the DTD. + * NOTE: misleading but this is handled. + * + * Returns the string of the entity content. + * str is updated to the current value of the index + */ +static xmlEntityPtr +xmlParseStringPEReference(xmlParserCtxtPtr ctxt, const xmlChar **str) { + const xmlChar *ptr; + xmlChar cur; + xmlChar *name; + xmlEntityPtr entity = NULL; + + if ((str == NULL) || (*str == NULL)) return(NULL); + ptr = *str; + cur = *ptr; + if (cur != '%') + return(NULL); + ptr++; + name = xmlParseStringName(ctxt, &ptr); + if (name == NULL) { + xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED, + "xmlParseStringPEReference: no name\n"); + *str = ptr; + return(NULL); + } + cur = *ptr; + if (cur != ';') { + xmlFatalErr(ctxt, XML_ERR_ENTITYREF_SEMICOL_MISSING, NULL); + xmlFree(name); + *str = ptr; + return(NULL); + } + ptr++; + + /* + * Increase the number of entity references parsed + */ + ctxt->nbentities++; + + /* + * Request the entity from SAX + */ + if ((ctxt->sax != NULL) && + (ctxt->sax->getParameterEntity != NULL)) + entity = ctxt->sax->getParameterEntity(ctxt->userData, name); + if (ctxt->instate == XML_PARSER_EOF) { + xmlFree(name); + *str = ptr; + return(NULL); + } + if (entity == NULL) { + /* + * [ WFC: Entity Declared ] + * In a document without any DTD, a document with only an + * internal DTD subset which contains no parameter entity + * references, or a document with "standalone='yes'", ... + * ... The declaration of a parameter entity must precede + * any reference to it... + */ + if ((ctxt->standalone == 1) || + ((ctxt->hasExternalSubset == 0) && (ctxt->hasPErefs == 0))) { + xmlFatalErrMsgStr(ctxt, XML_ERR_UNDECLARED_ENTITY, + "PEReference: %%%s; not found\n", name); + } else { + /* + * [ VC: Entity Declared ] + * In a document with an external subset or external + * parameter entities with "standalone='no'", ... + * ... The declaration of a parameter entity must + * precede any reference to it... + */ + xmlWarningMsg(ctxt, XML_WAR_UNDECLARED_ENTITY, + "PEReference: %%%s; not found\n", + name, NULL); + ctxt->valid = 0; + } + xmlParserEntityCheck(ctxt, 0, NULL, 0); + } else { + /* + * Internal checking in case the entity quest barfed + */ + if ((entity->etype != XML_INTERNAL_PARAMETER_ENTITY) && + (entity->etype != XML_EXTERNAL_PARAMETER_ENTITY)) { + xmlWarningMsg(ctxt, XML_WAR_UNDECLARED_ENTITY, + "%%%s; is not a parameter entity\n", + name, NULL); + } + } + ctxt->hasPErefs = 1; + xmlFree(name); + *str = ptr; + return(entity); +} + +/** + * xmlParseDocTypeDecl: + * @ctxt: an XML parser context + * + * parse a DOCTYPE declaration + * + * [28] doctypedecl ::= '<!DOCTYPE' S Name (S ExternalID)? S? + * ('[' (markupdecl | PEReference | S)* ']' S?)? '>' + * + * [ VC: Root Element Type ] + * The Name in the document type declaration must match the element + * type of the root element. + */ + +void +xmlParseDocTypeDecl(xmlParserCtxtPtr ctxt) { + const xmlChar *name = NULL; + xmlChar *ExternalID = NULL; + xmlChar *URI = NULL; + + /* + * We know that '<!DOCTYPE' has been detected. + */ + SKIP(9); + + SKIP_BLANKS; + + /* + * Parse the DOCTYPE name. + */ + name = xmlParseName(ctxt); + if (name == NULL) { + xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED, + "xmlParseDocTypeDecl : no DOCTYPE name !\n"); + } + ctxt->intSubName = name; + + SKIP_BLANKS; + + /* + * Check for SystemID and ExternalID + */ + URI = xmlParseExternalID(ctxt, &ExternalID, 1); + + if ((URI != NULL) || (ExternalID != NULL)) { + ctxt->hasExternalSubset = 1; + } + ctxt->extSubURI = URI; + ctxt->extSubSystem = ExternalID; + + SKIP_BLANKS; + + /* + * Create and update the internal subset. + */ + if ((ctxt->sax != NULL) && (ctxt->sax->internalSubset != NULL) && + (!ctxt->disableSAX)) + ctxt->sax->internalSubset(ctxt->userData, name, ExternalID, URI); + if (ctxt->instate == XML_PARSER_EOF) + return; + + /* + * Is there any internal subset declarations ? + * they are handled separately in xmlParseInternalSubset() + */ + if (RAW == '[') + return; + + /* + * We should be at the end of the DOCTYPE declaration. + */ + if (RAW != '>') { + xmlFatalErr(ctxt, XML_ERR_DOCTYPE_NOT_FINISHED, NULL); + } + NEXT; +} + +/** + * xmlParseInternalSubset: + * @ctxt: an XML parser context + * + * parse the internal subset declaration + * + * [28 end] ('[' (markupdecl | PEReference | S)* ']' S?)? '>' + */ + +static void +xmlParseInternalSubset(xmlParserCtxtPtr ctxt) { + /* + * Is there any DTD definition ? + */ + if (RAW == '[') { + int baseInputNr = ctxt->inputNr; + ctxt->instate = XML_PARSER_DTD; + NEXT; + /* + * Parse the succession of Markup declarations and + * PEReferences. + * Subsequence (markupdecl | PEReference | S)* + */ + while (((RAW != ']') || (ctxt->inputNr > baseInputNr)) && + (ctxt->instate != XML_PARSER_EOF)) { + const xmlChar *check = CUR_PTR; + unsigned int cons = ctxt->input->consumed; + + SKIP_BLANKS; + xmlParseMarkupDecl(ctxt); + xmlParsePEReference(ctxt); + + /* + * Conditional sections are allowed from external entities included + * by PE References in the internal subset. + */ + if ((ctxt->inputNr > 1) && (ctxt->input->filename != NULL) && + (RAW == '<') && (NXT(1) == '!') && (NXT(2) == '[')) { + xmlParseConditionalSections(ctxt); + } + + if ((CUR_PTR == check) && (cons == ctxt->input->consumed)) { + xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR, + "xmlParseInternalSubset: error detected in Markup declaration\n"); + if (ctxt->inputNr > baseInputNr) + xmlPopInput(ctxt); + else + break; + } + } + if (RAW == ']') { + NEXT; + SKIP_BLANKS; + } + } + + /* + * We should be at the end of the DOCTYPE declaration. + */ + if (RAW != '>') { + xmlFatalErr(ctxt, XML_ERR_DOCTYPE_NOT_FINISHED, NULL); + return; + } + NEXT; +} + +#ifdef LIBXML_SAX1_ENABLED +/** + * xmlParseAttribute: + * @ctxt: an XML parser context + * @value: a xmlChar ** used to store the value of the attribute + * + * parse an attribute + * + * [41] Attribute ::= Name Eq AttValue + * + * [ WFC: No External Entity References ] + * Attribute values cannot contain direct or indirect entity references + * to external entities. + * + * [ WFC: No < in Attribute Values ] + * The replacement text of any entity referred to directly or indirectly in + * an attribute value (other than "<") must not contain a <. + * + * [ VC: Attribute Value Type ] + * The attribute must have been declared; the value must be of the type + * declared for it. + * + * [25] Eq ::= S? '=' S? + * + * With namespace: + * + * [NS 11] Attribute ::= QName Eq AttValue + * + * Also the case QName == xmlns:??? is handled independently as a namespace + * definition. + * + * Returns the attribute name, and the value in *value. + */ + +const xmlChar * +xmlParseAttribute(xmlParserCtxtPtr ctxt, xmlChar **value) { + const xmlChar *name; + xmlChar *val; + + *value = NULL; + GROW; + name = xmlParseName(ctxt); + if (name == NULL) { + xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED, + "error parsing attribute name\n"); + return(NULL); + } + + /* + * read the value + */ + SKIP_BLANKS; + if (RAW == '=') { + NEXT; + SKIP_BLANKS; + val = xmlParseAttValue(ctxt); + ctxt->instate = XML_PARSER_CONTENT; + } else { + xmlFatalErrMsgStr(ctxt, XML_ERR_ATTRIBUTE_WITHOUT_VALUE, + "Specification mandates value for attribute %s\n", name); + return(NULL); + } + + /* + * Check that xml:lang conforms to the specification + * No more registered as an error, just generate a warning now + * since this was deprecated in XML second edition + */ + if ((ctxt->pedantic) && (xmlStrEqual(name, BAD_CAST "xml:lang"))) { + if (!xmlCheckLanguageID(val)) { + xmlWarningMsg(ctxt, XML_WAR_LANG_VALUE, + "Malformed value for xml:lang : %s\n", + val, NULL); + } + } + + /* + * Check that xml:space conforms to the specification + */ + if (xmlStrEqual(name, BAD_CAST "xml:space")) { + if (xmlStrEqual(val, BAD_CAST "default")) + *(ctxt->space) = 0; + else if (xmlStrEqual(val, BAD_CAST "preserve")) + *(ctxt->space) = 1; + else { + xmlWarningMsg(ctxt, XML_WAR_SPACE_VALUE, +"Invalid value \"%s\" for xml:space : \"default\" or \"preserve\" expected\n", + val, NULL); + } + } + + *value = val; + return(name); +} + +/** + * xmlParseStartTag: + * @ctxt: an XML parser context + * + * parse a start of tag either for rule element or + * EmptyElement. In both case we don't parse the tag closing chars. + * + * [40] STag ::= '<' Name (S Attribute)* S? '>' + * + * [ WFC: Unique Att Spec ] + * No attribute name may appear more than once in the same start-tag or + * empty-element tag. + * + * [44] EmptyElemTag ::= '<' Name (S Attribute)* S? '/>' + * + * [ WFC: Unique Att Spec ] + * No attribute name may appear more than once in the same start-tag or + * empty-element tag. + * + * With namespace: + * + * [NS 8] STag ::= '<' QName (S Attribute)* S? '>' + * + * [NS 10] EmptyElement ::= '<' QName (S Attribute)* S? '/>' + * + * Returns the element name parsed + */ + +const xmlChar * +xmlParseStartTag(xmlParserCtxtPtr ctxt) { + const xmlChar *name; + const xmlChar *attname; + xmlChar *attvalue; + const xmlChar **atts = ctxt->atts; + int nbatts = 0; + int maxatts = ctxt->maxatts; + int i; + + if (RAW != '<') return(NULL); + NEXT1; + + name = xmlParseName(ctxt); + if (name == NULL) { + xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED, + "xmlParseStartTag: invalid element name\n"); + return(NULL); + } + + /* + * Now parse the attributes, it ends up with the ending + * + * (S Attribute)* S? + */ + SKIP_BLANKS; + GROW; + + while (((RAW != '>') && + ((RAW != '/') || (NXT(1) != '>')) && + (IS_BYTE_CHAR(RAW))) && (ctxt->instate != XML_PARSER_EOF)) { + const xmlChar *q = CUR_PTR; + unsigned int cons = ctxt->input->consumed; + + attname = xmlParseAttribute(ctxt, &attvalue); + if ((attname != NULL) && (attvalue != NULL)) { + /* + * [ WFC: Unique Att Spec ] + * No attribute name may appear more than once in the same + * start-tag or empty-element tag. + */ + for (i = 0; i < nbatts;i += 2) { + if (xmlStrEqual(atts[i], attname)) { + xmlErrAttributeDup(ctxt, NULL, attname); + xmlFree(attvalue); + goto failed; + } + } + /* + * Add the pair to atts + */ + if (atts == NULL) { + maxatts = 22; /* allow for 10 attrs by default */ + atts = (const xmlChar **) + xmlMalloc(maxatts * sizeof(xmlChar *)); + if (atts == NULL) { + xmlErrMemory(ctxt, NULL); + if (attvalue != NULL) + xmlFree(attvalue); + goto failed; + } + ctxt->atts = atts; + ctxt->maxatts = maxatts; + } else if (nbatts + 4 > maxatts) { + const xmlChar **n; + + maxatts *= 2; + n = (const xmlChar **) xmlRealloc((void *) atts, + maxatts * sizeof(const xmlChar *)); + if (n == NULL) { + xmlErrMemory(ctxt, NULL); + if (attvalue != NULL) + xmlFree(attvalue); + goto failed; + } + atts = n; + ctxt->atts = atts; + ctxt->maxatts = maxatts; + } + atts[nbatts++] = attname; + atts[nbatts++] = attvalue; + atts[nbatts] = NULL; + atts[nbatts + 1] = NULL; + } else { + if (attvalue != NULL) + xmlFree(attvalue); + } + +failed: + + GROW + if ((RAW == '>') || (((RAW == '/') && (NXT(1) == '>')))) + break; + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "attributes construct error\n"); + } + if ((cons == ctxt->input->consumed) && (q == CUR_PTR) && + (attname == NULL) && (attvalue == NULL)) { + xmlFatalErrMsg(ctxt, XML_ERR_INTERNAL_ERROR, + "xmlParseStartTag: problem parsing attributes\n"); + break; + } + SHRINK; + GROW; + } + + /* + * SAX: Start of Element ! + */ + if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL) && + (!ctxt->disableSAX)) { + if (nbatts > 0) + ctxt->sax->startElement(ctxt->userData, name, atts); + else + ctxt->sax->startElement(ctxt->userData, name, NULL); + } + + if (atts != NULL) { + /* Free only the content strings */ + for (i = 1;i < nbatts;i+=2) + if (atts[i] != NULL) + xmlFree((xmlChar *) atts[i]); + } + return(name); +} + +/** + * xmlParseEndTag1: + * @ctxt: an XML parser context + * @line: line of the start tag + * @nsNr: number of namespaces on the start tag + * + * parse an end of tag + * + * [42] ETag ::= '</' Name S? '>' + * + * With namespace + * + * [NS 9] ETag ::= '</' QName S? '>' + */ + +static void +xmlParseEndTag1(xmlParserCtxtPtr ctxt, int line) { + const xmlChar *name; + + GROW; + if ((RAW != '<') || (NXT(1) != '/')) { + xmlFatalErrMsg(ctxt, XML_ERR_LTSLASH_REQUIRED, + "xmlParseEndTag: '</' not found\n"); + return; + } + SKIP(2); + + name = xmlParseNameAndCompare(ctxt,ctxt->name); + + /* + * We should definitely be at the ending "S? '>'" part + */ + GROW; + SKIP_BLANKS; + if ((!IS_BYTE_CHAR(RAW)) || (RAW != '>')) { + xmlFatalErr(ctxt, XML_ERR_GT_REQUIRED, NULL); + } else + NEXT1; + + /* + * [ WFC: Element Type Match ] + * The Name in an element's end-tag must match the element type in the + * start-tag. + * + */ + if (name != (xmlChar*)1) { + if (name == NULL) name = BAD_CAST "unparseable"; + xmlFatalErrMsgStrIntStr(ctxt, XML_ERR_TAG_NAME_MISMATCH, + "Opening and ending tag mismatch: %s line %d and %s\n", + ctxt->name, line, name); + } + + /* + * SAX: End of Tag + */ + if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL) && + (!ctxt->disableSAX)) + ctxt->sax->endElement(ctxt->userData, ctxt->name); + + namePop(ctxt); + spacePop(ctxt); + return; +} + +/** + * xmlParseEndTag: + * @ctxt: an XML parser context + * + * parse an end of tag + * + * [42] ETag ::= '</' Name S? '>' + * + * With namespace + * + * [NS 9] ETag ::= '</' QName S? '>' + */ + +void +xmlParseEndTag(xmlParserCtxtPtr ctxt) { + xmlParseEndTag1(ctxt, 0); +} +#endif /* LIBXML_SAX1_ENABLED */ + +/************************************************************************ + * * + * SAX 2 specific operations * + * * + ************************************************************************/ + +/* + * xmlGetNamespace: + * @ctxt: an XML parser context + * @prefix: the prefix to lookup + * + * Lookup the namespace name for the @prefix (which ca be NULL) + * The prefix must come from the @ctxt->dict dictionary + * + * Returns the namespace name or NULL if not bound + */ +static const xmlChar * +xmlGetNamespace(xmlParserCtxtPtr ctxt, const xmlChar *prefix) { + int i; + + if (prefix == ctxt->str_xml) return(ctxt->str_xml_ns); + for (i = ctxt->nsNr - 2;i >= 0;i-=2) + if (ctxt->nsTab[i] == prefix) { + if ((prefix == NULL) && (*ctxt->nsTab[i + 1] == 0)) + return(NULL); + return(ctxt->nsTab[i + 1]); + } + return(NULL); +} + +/** + * xmlParseQName: + * @ctxt: an XML parser context + * @prefix: pointer to store the prefix part + * + * parse an XML Namespace QName + * + * [6] QName ::= (Prefix ':')? LocalPart + * [7] Prefix ::= NCName + * [8] LocalPart ::= NCName + * + * Returns the Name parsed or NULL + */ + +static const xmlChar * +xmlParseQName(xmlParserCtxtPtr ctxt, const xmlChar **prefix) { + const xmlChar *l, *p; + + GROW; + + l = xmlParseNCName(ctxt); + if (l == NULL) { + if (CUR == ':') { + l = xmlParseName(ctxt); + if (l != NULL) { + xmlNsErr(ctxt, XML_NS_ERR_QNAME, + "Failed to parse QName '%s'\n", l, NULL, NULL); + *prefix = NULL; + return(l); + } + } + return(NULL); + } + if (CUR == ':') { + NEXT; + p = l; + l = xmlParseNCName(ctxt); + if (l == NULL) { + xmlChar *tmp; + + if (ctxt->instate == XML_PARSER_EOF) + return(NULL); + xmlNsErr(ctxt, XML_NS_ERR_QNAME, + "Failed to parse QName '%s:'\n", p, NULL, NULL); + l = xmlParseNmtoken(ctxt); + if (l == NULL) { + if (ctxt->instate == XML_PARSER_EOF) + return(NULL); + tmp = xmlBuildQName(BAD_CAST "", p, NULL, 0); + } else { + tmp = xmlBuildQName(l, p, NULL, 0); + xmlFree((char *)l); + } + p = xmlDictLookup(ctxt->dict, tmp, -1); + if (tmp != NULL) xmlFree(tmp); + *prefix = NULL; + return(p); + } + if (CUR == ':') { + xmlChar *tmp; + + xmlNsErr(ctxt, XML_NS_ERR_QNAME, + "Failed to parse QName '%s:%s:'\n", p, l, NULL); + NEXT; + tmp = (xmlChar *) xmlParseName(ctxt); + if (tmp != NULL) { + tmp = xmlBuildQName(tmp, l, NULL, 0); + l = xmlDictLookup(ctxt->dict, tmp, -1); + if (tmp != NULL) xmlFree(tmp); + *prefix = p; + return(l); + } + if (ctxt->instate == XML_PARSER_EOF) + return(NULL); + tmp = xmlBuildQName(BAD_CAST "", l, NULL, 0); + l = xmlDictLookup(ctxt->dict, tmp, -1); + if (tmp != NULL) xmlFree(tmp); + *prefix = p; + return(l); + } + *prefix = p; + } else + *prefix = NULL; + return(l); +} + +/** + * xmlParseQNameAndCompare: + * @ctxt: an XML parser context + * @name: the localname + * @prefix: the prefix, if any. + * + * parse an XML name and compares for match + * (specialized for endtag parsing) + * + * Returns NULL for an illegal name, (xmlChar*) 1 for success + * and the name for mismatch + */ + +static const xmlChar * +xmlParseQNameAndCompare(xmlParserCtxtPtr ctxt, xmlChar const *name, + xmlChar const *prefix) { + const xmlChar *cmp; + const xmlChar *in; + const xmlChar *ret; + const xmlChar *prefix2; + + if (prefix == NULL) return(xmlParseNameAndCompare(ctxt, name)); + + GROW; + in = ctxt->input->cur; + + cmp = prefix; + while (*in != 0 && *in == *cmp) { + ++in; + ++cmp; + } + if ((*cmp == 0) && (*in == ':')) { + in++; + cmp = name; + while (*in != 0 && *in == *cmp) { + ++in; + ++cmp; + } + if (*cmp == 0 && (*in == '>' || IS_BLANK_CH (*in))) { + /* success */ + ctxt->input->cur = in; + return((const xmlChar*) 1); + } + } + /* + * all strings coms from the dictionary, equality can be done directly + */ + ret = xmlParseQName (ctxt, &prefix2); + if ((ret == name) && (prefix == prefix2)) + return((const xmlChar*) 1); + return ret; +} + +/** + * xmlParseAttValueInternal: + * @ctxt: an XML parser context + * @len: attribute len result + * @alloc: whether the attribute was reallocated as a new string + * @normalize: if 1 then further non-CDATA normalization must be done + * + * parse a value for an attribute. + * NOTE: if no normalization is needed, the routine will return pointers + * directly from the data buffer. + * + * 3.3.3 Attribute-Value Normalization: + * Before the value of an attribute is passed to the application or + * checked for validity, the XML processor must normalize it as follows: + * - a character reference is processed by appending the referenced + * character to the attribute value + * - an entity reference is processed by recursively processing the + * replacement text of the entity + * - a whitespace character (#x20, #xD, #xA, #x9) is processed by + * appending #x20 to the normalized value, except that only a single + * #x20 is appended for a "#xD#xA" sequence that is part of an external + * parsed entity or the literal entity value of an internal parsed entity + * - other characters are processed by appending them to the normalized value + * If the declared value is not CDATA, then the XML processor must further + * process the normalized attribute value by discarding any leading and + * trailing space (#x20) characters, and by replacing sequences of space + * (#x20) characters by a single space (#x20) character. + * All attributes for which no declaration has been read should be treated + * by a non-validating parser as if declared CDATA. + * + * Returns the AttValue parsed or NULL. The value has to be freed by the + * caller if it was copied, this can be detected by val[*len] == 0. + */ + +#define GROW_PARSE_ATT_VALUE_INTERNAL(ctxt, in, start, end) \ + const xmlChar *oldbase = ctxt->input->base;\ + GROW;\ + if (ctxt->instate == XML_PARSER_EOF)\ + return(NULL);\ + if (oldbase != ctxt->input->base) {\ + ptrdiff_t delta = ctxt->input->base - oldbase;\ + start = start + delta;\ + in = in + delta;\ + }\ + end = ctxt->input->end; + +static xmlChar * +xmlParseAttValueInternal(xmlParserCtxtPtr ctxt, int *len, int *alloc, + int normalize) +{ + xmlChar limit = 0; + const xmlChar *in = NULL, *start, *end, *last; + xmlChar *ret = NULL; + int line, col; + + GROW; + in = (xmlChar *) CUR_PTR; + line = ctxt->input->line; + col = ctxt->input->col; + if (*in != '"' && *in != '\'') { + xmlFatalErr(ctxt, XML_ERR_ATTRIBUTE_NOT_STARTED, NULL); + return (NULL); + } + ctxt->instate = XML_PARSER_ATTRIBUTE_VALUE; + + /* + * try to handle in this routine the most common case where no + * allocation of a new string is required and where content is + * pure ASCII. + */ + limit = *in++; + col++; + end = ctxt->input->end; + start = in; + if (in >= end) { + GROW_PARSE_ATT_VALUE_INTERNAL(ctxt, in, start, end) + } + if (normalize) { + /* + * Skip any leading spaces + */ + while ((in < end) && (*in != limit) && + ((*in == 0x20) || (*in == 0x9) || + (*in == 0xA) || (*in == 0xD))) { + if (*in == 0xA) { + line++; col = 1; + } else { + col++; + } + in++; + start = in; + if (in >= end) { + GROW_PARSE_ATT_VALUE_INTERNAL(ctxt, in, start, end) + if (((in - start) > XML_MAX_TEXT_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED, + "AttValue length too long\n"); + return(NULL); + } + } + } + while ((in < end) && (*in != limit) && (*in >= 0x20) && + (*in <= 0x7f) && (*in != '&') && (*in != '<')) { + col++; + if ((*in++ == 0x20) && (*in == 0x20)) break; + if (in >= end) { + GROW_PARSE_ATT_VALUE_INTERNAL(ctxt, in, start, end) + if (((in - start) > XML_MAX_TEXT_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED, + "AttValue length too long\n"); + return(NULL); + } + } + } + last = in; + /* + * skip the trailing blanks + */ + while ((last[-1] == 0x20) && (last > start)) last--; + while ((in < end) && (*in != limit) && + ((*in == 0x20) || (*in == 0x9) || + (*in == 0xA) || (*in == 0xD))) { + if (*in == 0xA) { + line++, col = 1; + } else { + col++; + } + in++; + if (in >= end) { + const xmlChar *oldbase = ctxt->input->base; + GROW; + if (ctxt->instate == XML_PARSER_EOF) + return(NULL); + if (oldbase != ctxt->input->base) { + ptrdiff_t delta = ctxt->input->base - oldbase; + start = start + delta; + in = in + delta; + last = last + delta; + } + end = ctxt->input->end; + if (((in - start) > XML_MAX_TEXT_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED, + "AttValue length too long\n"); + return(NULL); + } + } + } + if (((in - start) > XML_MAX_TEXT_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED, + "AttValue length too long\n"); + return(NULL); + } + if (*in != limit) goto need_complex; + } else { + while ((in < end) && (*in != limit) && (*in >= 0x20) && + (*in <= 0x7f) && (*in != '&') && (*in != '<')) { + in++; + col++; + if (in >= end) { + GROW_PARSE_ATT_VALUE_INTERNAL(ctxt, in, start, end) + if (((in - start) > XML_MAX_TEXT_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED, + "AttValue length too long\n"); + return(NULL); + } + } + } + last = in; + if (((in - start) > XML_MAX_TEXT_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED, + "AttValue length too long\n"); + return(NULL); + } + if (*in != limit) goto need_complex; + } + in++; + col++; + if (len != NULL) { + *len = last - start; + ret = (xmlChar *) start; + } else { + if (alloc) *alloc = 1; + ret = xmlStrndup(start, last - start); + } + CUR_PTR = in; + ctxt->input->line = line; + ctxt->input->col = col; + if (alloc) *alloc = 0; + return ret; +need_complex: + if (alloc) *alloc = 1; + return xmlParseAttValueComplex(ctxt, len, normalize); +} + +/** + * xmlParseAttribute2: + * @ctxt: an XML parser context + * @pref: the element prefix + * @elem: the element name + * @prefix: a xmlChar ** used to store the value of the attribute prefix + * @value: a xmlChar ** used to store the value of the attribute + * @len: an int * to save the length of the attribute + * @alloc: an int * to indicate if the attribute was allocated + * + * parse an attribute in the new SAX2 framework. + * + * Returns the attribute name, and the value in *value, . + */ + +static const xmlChar * +xmlParseAttribute2(xmlParserCtxtPtr ctxt, + const xmlChar * pref, const xmlChar * elem, + const xmlChar ** prefix, xmlChar ** value, + int *len, int *alloc) +{ + const xmlChar *name; + xmlChar *val, *internal_val = NULL; + int normalize = 0; + + *value = NULL; + GROW; + name = xmlParseQName(ctxt, prefix); + if (name == NULL) { + xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED, + "error parsing attribute name\n"); + return (NULL); + } + + /* + * get the type if needed + */ + if (ctxt->attsSpecial != NULL) { + int type; + + type = (int) (ptrdiff_t) xmlHashQLookup2(ctxt->attsSpecial, + pref, elem, *prefix, name); + if (type != 0) + normalize = 1; + } + + /* + * read the value + */ + SKIP_BLANKS; + if (RAW == '=') { + NEXT; + SKIP_BLANKS; + val = xmlParseAttValueInternal(ctxt, len, alloc, normalize); + if (normalize) { + /* + * Sometimes a second normalisation pass for spaces is needed + * but that only happens if charrefs or entities references + * have been used in the attribute value, i.e. the attribute + * value have been extracted in an allocated string already. + */ + if (*alloc) { + const xmlChar *val2; + + val2 = xmlAttrNormalizeSpace2(ctxt, val, len); + if ((val2 != NULL) && (val2 != val)) { + xmlFree(val); + val = (xmlChar *) val2; + } + } + } + ctxt->instate = XML_PARSER_CONTENT; + } else { + xmlFatalErrMsgStr(ctxt, XML_ERR_ATTRIBUTE_WITHOUT_VALUE, + "Specification mandates value for attribute %s\n", + name); + return (NULL); + } + + if (*prefix == ctxt->str_xml) { + /* + * Check that xml:lang conforms to the specification + * No more registered as an error, just generate a warning now + * since this was deprecated in XML second edition + */ + if ((ctxt->pedantic) && (xmlStrEqual(name, BAD_CAST "lang"))) { + internal_val = xmlStrndup(val, *len); + if (!xmlCheckLanguageID(internal_val)) { + xmlWarningMsg(ctxt, XML_WAR_LANG_VALUE, + "Malformed value for xml:lang : %s\n", + internal_val, NULL); + } + } + + /* + * Check that xml:space conforms to the specification + */ + if (xmlStrEqual(name, BAD_CAST "space")) { + internal_val = xmlStrndup(val, *len); + if (xmlStrEqual(internal_val, BAD_CAST "default")) + *(ctxt->space) = 0; + else if (xmlStrEqual(internal_val, BAD_CAST "preserve")) + *(ctxt->space) = 1; + else { + xmlWarningMsg(ctxt, XML_WAR_SPACE_VALUE, + "Invalid value \"%s\" for xml:space : \"default\" or \"preserve\" expected\n", + internal_val, NULL); + } + } + if (internal_val) { + xmlFree(internal_val); + } + } + + *value = val; + return (name); +} +/** + * xmlParseStartTag2: + * @ctxt: an XML parser context + * + * parse a start of tag either for rule element or + * EmptyElement. In both case we don't parse the tag closing chars. + * This routine is called when running SAX2 parsing + * + * [40] STag ::= '<' Name (S Attribute)* S? '>' + * + * [ WFC: Unique Att Spec ] + * No attribute name may appear more than once in the same start-tag or + * empty-element tag. + * + * [44] EmptyElemTag ::= '<' Name (S Attribute)* S? '/>' + * + * [ WFC: Unique Att Spec ] + * No attribute name may appear more than once in the same start-tag or + * empty-element tag. + * + * With namespace: + * + * [NS 8] STag ::= '<' QName (S Attribute)* S? '>' + * + * [NS 10] EmptyElement ::= '<' QName (S Attribute)* S? '/>' + * + * Returns the element name parsed + */ + +static const xmlChar * +xmlParseStartTag2(xmlParserCtxtPtr ctxt, const xmlChar **pref, + const xmlChar **URI, int *tlen) { + const xmlChar *localname; + const xmlChar *prefix; + const xmlChar *attname; + const xmlChar *aprefix; + const xmlChar *nsname; + xmlChar *attvalue; + const xmlChar **atts = ctxt->atts; + int maxatts = ctxt->maxatts; + int nratts, nbatts, nbdef, inputid; + int i, j, nbNs, attval; + unsigned long cur; + int nsNr = ctxt->nsNr; + + if (RAW != '<') return(NULL); + NEXT1; + + /* + * NOTE: it is crucial with the SAX2 API to never call SHRINK beyond that + * point since the attribute values may be stored as pointers to + * the buffer and calling SHRINK would destroy them ! + * The Shrinking is only possible once the full set of attribute + * callbacks have been done. + */ + SHRINK; + cur = ctxt->input->cur - ctxt->input->base; + inputid = ctxt->input->id; + nbatts = 0; + nratts = 0; + nbdef = 0; + nbNs = 0; + attval = 0; + /* Forget any namespaces added during an earlier parse of this element. */ + ctxt->nsNr = nsNr; + + localname = xmlParseQName(ctxt, &prefix); + if (localname == NULL) { + xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED, + "StartTag: invalid element name\n"); + return(NULL); + } + *tlen = ctxt->input->cur - ctxt->input->base - cur; + + /* + * Now parse the attributes, it ends up with the ending + * + * (S Attribute)* S? + */ + SKIP_BLANKS; + GROW; + + while (((RAW != '>') && + ((RAW != '/') || (NXT(1) != '>')) && + (IS_BYTE_CHAR(RAW))) && (ctxt->instate != XML_PARSER_EOF)) { + const xmlChar *q = CUR_PTR; + unsigned int cons = ctxt->input->consumed; + int len = -1, alloc = 0; + + attname = xmlParseAttribute2(ctxt, prefix, localname, + &aprefix, &attvalue, &len, &alloc); + if ((attname == NULL) || (attvalue == NULL)) + goto next_attr; + if (len < 0) len = xmlStrlen(attvalue); + + if ((attname == ctxt->str_xmlns) && (aprefix == NULL)) { + const xmlChar *URL = xmlDictLookup(ctxt->dict, attvalue, len); + xmlURIPtr uri; + + if (URL == NULL) { + xmlErrMemory(ctxt, "dictionary allocation failure"); + if ((attvalue != NULL) && (alloc != 0)) + xmlFree(attvalue); + localname = NULL; + goto done; + } + if (*URL != 0) { + uri = xmlParseURI((const char *) URL); + if (uri == NULL) { + xmlNsErr(ctxt, XML_WAR_NS_URI, + "xmlns: '%s' is not a valid URI\n", + URL, NULL, NULL); + } else { + if (uri->scheme == NULL) { + xmlNsWarn(ctxt, XML_WAR_NS_URI_RELATIVE, + "xmlns: URI %s is not absolute\n", + URL, NULL, NULL); + } + xmlFreeURI(uri); + } + if (URL == ctxt->str_xml_ns) { + if (attname != ctxt->str_xml) { + xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE, + "xml namespace URI cannot be the default namespace\n", + NULL, NULL, NULL); + } + goto next_attr; + } + if ((len == 29) && + (xmlStrEqual(URL, + BAD_CAST "http://www.w3.org/2000/xmlns/"))) { + xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE, + "reuse of the xmlns namespace name is forbidden\n", + NULL, NULL, NULL); + goto next_attr; + } + } + /* + * check that it's not a defined namespace + */ + for (j = 1;j <= nbNs;j++) + if (ctxt->nsTab[ctxt->nsNr - 2 * j] == NULL) + break; + if (j <= nbNs) + xmlErrAttributeDup(ctxt, NULL, attname); + else + if (nsPush(ctxt, NULL, URL) > 0) nbNs++; + + } else if (aprefix == ctxt->str_xmlns) { + const xmlChar *URL = xmlDictLookup(ctxt->dict, attvalue, len); + xmlURIPtr uri; + + if (attname == ctxt->str_xml) { + if (URL != ctxt->str_xml_ns) { + xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE, + "xml namespace prefix mapped to wrong URI\n", + NULL, NULL, NULL); + } + /* + * Do not keep a namespace definition node + */ + goto next_attr; + } + if (URL == ctxt->str_xml_ns) { + if (attname != ctxt->str_xml) { + xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE, + "xml namespace URI mapped to wrong prefix\n", + NULL, NULL, NULL); + } + goto next_attr; + } + if (attname == ctxt->str_xmlns) { + xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE, + "redefinition of the xmlns prefix is forbidden\n", + NULL, NULL, NULL); + goto next_attr; + } + if ((len == 29) && + (xmlStrEqual(URL, + BAD_CAST "http://www.w3.org/2000/xmlns/"))) { + xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE, + "reuse of the xmlns namespace name is forbidden\n", + NULL, NULL, NULL); + goto next_attr; + } + if ((URL == NULL) || (URL[0] == 0)) { + xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE, + "xmlns:%s: Empty XML namespace is not allowed\n", + attname, NULL, NULL); + goto next_attr; + } else { + uri = xmlParseURI((const char *) URL); + if (uri == NULL) { + xmlNsErr(ctxt, XML_WAR_NS_URI, + "xmlns:%s: '%s' is not a valid URI\n", + attname, URL, NULL); + } else { + if ((ctxt->pedantic) && (uri->scheme == NULL)) { + xmlNsWarn(ctxt, XML_WAR_NS_URI_RELATIVE, + "xmlns:%s: URI %s is not absolute\n", + attname, URL, NULL); + } + xmlFreeURI(uri); + } + } + + /* + * check that it's not a defined namespace + */ + for (j = 1;j <= nbNs;j++) + if (ctxt->nsTab[ctxt->nsNr - 2 * j] == attname) + break; + if (j <= nbNs) + xmlErrAttributeDup(ctxt, aprefix, attname); + else + if (nsPush(ctxt, attname, URL) > 0) nbNs++; + + } else { + /* + * Add the pair to atts + */ + if ((atts == NULL) || (nbatts + 5 > maxatts)) { + if (xmlCtxtGrowAttrs(ctxt, nbatts + 5) < 0) { + goto next_attr; + } + maxatts = ctxt->maxatts; + atts = ctxt->atts; + } + ctxt->attallocs[nratts++] = alloc; + atts[nbatts++] = attname; + atts[nbatts++] = aprefix; + /* + * The namespace URI field is used temporarily to point at the + * base of the current input buffer for non-alloced attributes. + * When the input buffer is reallocated, all the pointers become + * invalid, but they can be reconstructed later. + */ + if (alloc) + atts[nbatts++] = NULL; + else + atts[nbatts++] = ctxt->input->base; + atts[nbatts++] = attvalue; + attvalue += len; + atts[nbatts++] = attvalue; + /* + * tag if some deallocation is needed + */ + if (alloc != 0) attval = 1; + attvalue = NULL; /* moved into atts */ + } + +next_attr: + if ((attvalue != NULL) && (alloc != 0)) { + xmlFree(attvalue); + attvalue = NULL; + } + + GROW + if (ctxt->instate == XML_PARSER_EOF) + break; + if ((RAW == '>') || (((RAW == '/') && (NXT(1) == '>')))) + break; + if (SKIP_BLANKS == 0) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "attributes construct error\n"); + break; + } + if ((cons == ctxt->input->consumed) && (q == CUR_PTR) && + (attname == NULL) && (attvalue == NULL)) { + xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR, + "xmlParseStartTag: problem parsing attributes\n"); + break; + } + GROW; + } + + if (ctxt->input->id != inputid) { + xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR, + "Unexpected change of input\n"); + localname = NULL; + goto done; + } + + /* Reconstruct attribute value pointers. */ + for (i = 0, j = 0; j < nratts; i += 5, j++) { + if (atts[i+2] != NULL) { + /* + * Arithmetic on dangling pointers is technically undefined + * behavior, but well... + */ + ptrdiff_t offset = ctxt->input->base - atts[i+2]; + atts[i+2] = NULL; /* Reset repurposed namespace URI */ + atts[i+3] += offset; /* value */ + atts[i+4] += offset; /* valuend */ + } + } + + /* + * The attributes defaulting + */ + if (ctxt->attsDefault != NULL) { + xmlDefAttrsPtr defaults; + + defaults = xmlHashLookup2(ctxt->attsDefault, localname, prefix); + if (defaults != NULL) { + for (i = 0;i < defaults->nbAttrs;i++) { + attname = defaults->values[5 * i]; + aprefix = defaults->values[5 * i + 1]; + + /* + * special work for namespaces defaulted defs + */ + if ((attname == ctxt->str_xmlns) && (aprefix == NULL)) { + /* + * check that it's not a defined namespace + */ + for (j = 1;j <= nbNs;j++) + if (ctxt->nsTab[ctxt->nsNr - 2 * j] == NULL) + break; + if (j <= nbNs) continue; + + nsname = xmlGetNamespace(ctxt, NULL); + if (nsname != defaults->values[5 * i + 2]) { + if (nsPush(ctxt, NULL, + defaults->values[5 * i + 2]) > 0) + nbNs++; + } + } else if (aprefix == ctxt->str_xmlns) { + /* + * check that it's not a defined namespace + */ + for (j = 1;j <= nbNs;j++) + if (ctxt->nsTab[ctxt->nsNr - 2 * j] == attname) + break; + if (j <= nbNs) continue; + + nsname = xmlGetNamespace(ctxt, attname); + if (nsname != defaults->values[2]) { + if (nsPush(ctxt, attname, + defaults->values[5 * i + 2]) > 0) + nbNs++; + } + } else { + /* + * check that it's not a defined attribute + */ + for (j = 0;j < nbatts;j+=5) { + if ((attname == atts[j]) && (aprefix == atts[j+1])) + break; + } + if (j < nbatts) continue; + + if ((atts == NULL) || (nbatts + 5 > maxatts)) { + if (xmlCtxtGrowAttrs(ctxt, nbatts + 5) < 0) { + localname = NULL; + goto done; + } + maxatts = ctxt->maxatts; + atts = ctxt->atts; + } + atts[nbatts++] = attname; + atts[nbatts++] = aprefix; + if (aprefix == NULL) + atts[nbatts++] = NULL; + else + atts[nbatts++] = xmlGetNamespace(ctxt, aprefix); + atts[nbatts++] = defaults->values[5 * i + 2]; + atts[nbatts++] = defaults->values[5 * i + 3]; + if ((ctxt->standalone == 1) && + (defaults->values[5 * i + 4] != NULL)) { + xmlValidityError(ctxt, XML_DTD_STANDALONE_DEFAULTED, + "standalone: attribute %s on %s defaulted from external subset\n", + attname, localname); + } + nbdef++; + } + } + } + } + + /* + * The attributes checkings + */ + for (i = 0; i < nbatts;i += 5) { + /* + * The default namespace does not apply to attribute names. + */ + if (atts[i + 1] != NULL) { + nsname = xmlGetNamespace(ctxt, atts[i + 1]); + if (nsname == NULL) { + xmlNsErr(ctxt, XML_NS_ERR_UNDEFINED_NAMESPACE, + "Namespace prefix %s for %s on %s is not defined\n", + atts[i + 1], atts[i], localname); + } + atts[i + 2] = nsname; + } else + nsname = NULL; + /* + * [ WFC: Unique Att Spec ] + * No attribute name may appear more than once in the same + * start-tag or empty-element tag. + * As extended by the Namespace in XML REC. + */ + for (j = 0; j < i;j += 5) { + if (atts[i] == atts[j]) { + if (atts[i+1] == atts[j+1]) { + xmlErrAttributeDup(ctxt, atts[i+1], atts[i]); + break; + } + if ((nsname != NULL) && (atts[j + 2] == nsname)) { + xmlNsErr(ctxt, XML_NS_ERR_ATTRIBUTE_REDEFINED, + "Namespaced Attribute %s in '%s' redefined\n", + atts[i], nsname, NULL); + break; + } + } + } + } + + nsname = xmlGetNamespace(ctxt, prefix); + if ((prefix != NULL) && (nsname == NULL)) { + xmlNsErr(ctxt, XML_NS_ERR_UNDEFINED_NAMESPACE, + "Namespace prefix %s on %s is not defined\n", + prefix, localname, NULL); + } + *pref = prefix; + *URI = nsname; + + /* + * SAX: Start of Element ! + */ + if ((ctxt->sax != NULL) && (ctxt->sax->startElementNs != NULL) && + (!ctxt->disableSAX)) { + if (nbNs > 0) + ctxt->sax->startElementNs(ctxt->userData, localname, prefix, + nsname, nbNs, &ctxt->nsTab[ctxt->nsNr - 2 * nbNs], + nbatts / 5, nbdef, atts); + else + ctxt->sax->startElementNs(ctxt->userData, localname, prefix, + nsname, 0, NULL, nbatts / 5, nbdef, atts); + } + +done: + /* + * Free up attribute allocated strings if needed + */ + if (attval != 0) { + for (i = 3,j = 0; j < nratts;i += 5,j++) + if ((ctxt->attallocs[j] != 0) && (atts[i] != NULL)) + xmlFree((xmlChar *) atts[i]); + } + + return(localname); +} + +/** + * xmlParseEndTag2: + * @ctxt: an XML parser context + * @line: line of the start tag + * @nsNr: number of namespaces on the start tag + * + * parse an end of tag + * + * [42] ETag ::= '</' Name S? '>' + * + * With namespace + * + * [NS 9] ETag ::= '</' QName S? '>' + */ + +static void +xmlParseEndTag2(xmlParserCtxtPtr ctxt, const xmlChar *prefix, + const xmlChar *URI, int line, int nsNr, int tlen) { + const xmlChar *name; + size_t curLength; + + GROW; + if ((RAW != '<') || (NXT(1) != '/')) { + xmlFatalErr(ctxt, XML_ERR_LTSLASH_REQUIRED, NULL); + return; + } + SKIP(2); + + curLength = ctxt->input->end - ctxt->input->cur; + if ((tlen > 0) && (curLength >= (size_t)tlen) && + (xmlStrncmp(ctxt->input->cur, ctxt->name, tlen) == 0)) { + if ((curLength >= (size_t)(tlen + 1)) && + (ctxt->input->cur[tlen] == '>')) { + ctxt->input->cur += tlen + 1; + ctxt->input->col += tlen + 1; + goto done; + } + ctxt->input->cur += tlen; + ctxt->input->col += tlen; + name = (xmlChar*)1; + } else { + if (prefix == NULL) + name = xmlParseNameAndCompare(ctxt, ctxt->name); + else + name = xmlParseQNameAndCompare(ctxt, ctxt->name, prefix); + } + + /* + * We should definitely be at the ending "S? '>'" part + */ + GROW; + if (ctxt->instate == XML_PARSER_EOF) + return; + SKIP_BLANKS; + if ((!IS_BYTE_CHAR(RAW)) || (RAW != '>')) { + xmlFatalErr(ctxt, XML_ERR_GT_REQUIRED, NULL); + } else + NEXT1; + + /* + * [ WFC: Element Type Match ] + * The Name in an element's end-tag must match the element type in the + * start-tag. + * + */ + if (name != (xmlChar*)1) { + if (name == NULL) name = BAD_CAST "unparseable"; + if ((line == 0) && (ctxt->node != NULL)) + line = ctxt->node->line; + xmlFatalErrMsgStrIntStr(ctxt, XML_ERR_TAG_NAME_MISMATCH, + "Opening and ending tag mismatch: %s line %d and %s\n", + ctxt->name, line, name); + } + + /* + * SAX: End of Tag + */ +done: + if ((ctxt->sax != NULL) && (ctxt->sax->endElementNs != NULL) && + (!ctxt->disableSAX)) + ctxt->sax->endElementNs(ctxt->userData, ctxt->name, prefix, URI); + + spacePop(ctxt); + if (nsNr != 0) + nsPop(ctxt, nsNr); + return; +} + +/** + * xmlParseCDSect: + * @ctxt: an XML parser context + * + * Parse escaped pure raw content. + * + * [18] CDSect ::= CDStart CData CDEnd + * + * [19] CDStart ::= '<![CDATA[' + * + * [20] Data ::= (Char* - (Char* ']]>' Char*)) + * + * [21] CDEnd ::= ']]>' + */ +void +xmlParseCDSect(xmlParserCtxtPtr ctxt) { + xmlChar *buf = NULL; + int len = 0; + int size = XML_PARSER_BUFFER_SIZE; + int r, rl; + int s, sl; + int cur, l; + int count = 0; + + /* Check 2.6.0 was NXT(0) not RAW */ + if (CMP9(CUR_PTR, '<', '!', '[', 'C', 'D', 'A', 'T', 'A', '[')) { + SKIP(9); + } else + return; + + ctxt->instate = XML_PARSER_CDATA_SECTION; + r = CUR_CHAR(rl); + if (!IS_CHAR(r)) { + xmlFatalErr(ctxt, XML_ERR_CDATA_NOT_FINISHED, NULL); + ctxt->instate = XML_PARSER_CONTENT; + return; + } + NEXTL(rl); + s = CUR_CHAR(sl); + if (!IS_CHAR(s)) { + xmlFatalErr(ctxt, XML_ERR_CDATA_NOT_FINISHED, NULL); + ctxt->instate = XML_PARSER_CONTENT; + return; + } + NEXTL(sl); + cur = CUR_CHAR(l); + buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar)); + if (buf == NULL) { + xmlErrMemory(ctxt, NULL); + return; + } + while (IS_CHAR(cur) && + ((r != ']') || (s != ']') || (cur != '>'))) { + if (len + 5 >= size) { + xmlChar *tmp; + + if ((size > XML_MAX_TEXT_LENGTH) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErrMsgStr(ctxt, XML_ERR_CDATA_NOT_FINISHED, + "CData section too big found", NULL); + xmlFree (buf); + return; + } + tmp = (xmlChar *) xmlRealloc(buf, size * 2 * sizeof(xmlChar)); + if (tmp == NULL) { + xmlFree(buf); + xmlErrMemory(ctxt, NULL); + return; + } + buf = tmp; + size *= 2; + } + COPY_BUF(rl,buf,len,r); + r = s; + rl = sl; + s = cur; + sl = l; + count++; + if (count > 50) { + GROW; + if (ctxt->instate == XML_PARSER_EOF) { + xmlFree(buf); + return; + } + count = 0; + } + NEXTL(l); + cur = CUR_CHAR(l); + } + buf[len] = 0; + ctxt->instate = XML_PARSER_CONTENT; + if (cur != '>') { + xmlFatalErrMsgStr(ctxt, XML_ERR_CDATA_NOT_FINISHED, + "CData section not finished\n%.50s\n", buf); + xmlFree(buf); + return; + } + NEXTL(l); + + /* + * OK the buffer is to be consumed as cdata. + */ + if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) { + if (ctxt->sax->cdataBlock != NULL) + ctxt->sax->cdataBlock(ctxt->userData, buf, len); + else if (ctxt->sax->characters != NULL) + ctxt->sax->characters(ctxt->userData, buf, len); + } + xmlFree(buf); +} + +/** + * xmlParseContent: + * @ctxt: an XML parser context + * + * Parse a content: + * + * [43] content ::= (element | CharData | Reference | CDSect | PI | Comment)* + */ + +void +xmlParseContent(xmlParserCtxtPtr ctxt) { + int nameNr = ctxt->nameNr; + + GROW; + while ((RAW != 0) && + (ctxt->instate != XML_PARSER_EOF)) { + const xmlChar *test = CUR_PTR; + unsigned int cons = ctxt->input->consumed; + const xmlChar *cur = ctxt->input->cur; + + /* + * First case : a Processing Instruction. + */ + if ((*cur == '<') && (cur[1] == '?')) { + xmlParsePI(ctxt); + } + + /* + * Second case : a CDSection + */ + /* 2.6.0 test was *cur not RAW */ + else if (CMP9(CUR_PTR, '<', '!', '[', 'C', 'D', 'A', 'T', 'A', '[')) { + xmlParseCDSect(ctxt); + } + + /* + * Third case : a comment + */ + else if ((*cur == '<') && (NXT(1) == '!') && + (NXT(2) == '-') && (NXT(3) == '-')) { + xmlParseComment(ctxt); + ctxt->instate = XML_PARSER_CONTENT; + } + + /* + * Fourth case : a sub-element. + */ + else if (*cur == '<') { + if (NXT(1) == '/') { + if (ctxt->nameNr <= nameNr) + break; + xmlParseElementEnd(ctxt); + } else { + xmlParseElementStart(ctxt); + } + } + + /* + * Fifth case : a reference. If if has not been resolved, + * parsing returns it's Name, create the node + */ + + else if (*cur == '&') { + xmlParseReference(ctxt); + } + + /* + * Last case, text. Note that References are handled directly. + */ + else { + xmlParseCharData(ctxt, 0); + } + + GROW; + SHRINK; + + if ((cons == ctxt->input->consumed) && (test == CUR_PTR)) { + xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR, + "detected an error in element content\n"); + xmlHaltParser(ctxt); + break; + } + } +} + +/** + * xmlParseElement: + * @ctxt: an XML parser context + * + * parse an XML element + * + * [39] element ::= EmptyElemTag | STag content ETag + * + * [ WFC: Element Type Match ] + * The Name in an element's end-tag must match the element type in the + * start-tag. + * + */ + +void +xmlParseElement(xmlParserCtxtPtr ctxt) { + if (xmlParseElementStart(ctxt) != 0) + return; + xmlParseContent(ctxt); + if (ctxt->instate == XML_PARSER_EOF) + return; + xmlParseElementEnd(ctxt); +} + +/** + * xmlParseElementStart: + * @ctxt: an XML parser context + * + * Parse the start of an XML element. Returns -1 in case of error, 0 if an + * opening tag was parsed, 1 if an empty element was parsed. + */ +static int +xmlParseElementStart(xmlParserCtxtPtr ctxt) { + const xmlChar *name; + const xmlChar *prefix = NULL; + const xmlChar *URI = NULL; + xmlParserNodeInfo node_info; + int line, tlen = 0; + xmlNodePtr ret; + int nsNr = ctxt->nsNr; + + if (((unsigned int) ctxt->nameNr > xmlParserMaxDepth) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErrMsgInt(ctxt, XML_ERR_INTERNAL_ERROR, + "Excessive depth in document: %d use XML_PARSE_HUGE option\n", + xmlParserMaxDepth); + xmlHaltParser(ctxt); + return(-1); + } + + /* Capture start position */ + if (ctxt->record_info) { + node_info.begin_pos = ctxt->input->consumed + + (CUR_PTR - ctxt->input->base); + node_info.begin_line = ctxt->input->line; + } + + if (ctxt->spaceNr == 0) + spacePush(ctxt, -1); + else if (*ctxt->space == -2) + spacePush(ctxt, -1); + else + spacePush(ctxt, *ctxt->space); + + line = ctxt->input->line; +#ifdef LIBXML_SAX1_ENABLED + if (ctxt->sax2) +#endif /* LIBXML_SAX1_ENABLED */ + name = xmlParseStartTag2(ctxt, &prefix, &URI, &tlen); +#ifdef LIBXML_SAX1_ENABLED + else + name = xmlParseStartTag(ctxt); +#endif /* LIBXML_SAX1_ENABLED */ + if (ctxt->instate == XML_PARSER_EOF) + return(-1); + if (name == NULL) { + spacePop(ctxt); + return(-1); + } + if (ctxt->sax2) + nameNsPush(ctxt, name, prefix, URI, ctxt->nsNr - nsNr); +#ifdef LIBXML_SAX1_ENABLED + else + namePush(ctxt, name); +#endif /* LIBXML_SAX1_ENABLED */ + ret = ctxt->node; + +#ifdef LIBXML_VALID_ENABLED + /* + * [ VC: Root Element Type ] + * The Name in the document type declaration must match the element + * type of the root element. + */ + if (ctxt->validate && ctxt->wellFormed && ctxt->myDoc && + ctxt->node && (ctxt->node == ctxt->myDoc->children)) + ctxt->valid &= xmlValidateRoot(&ctxt->vctxt, ctxt->myDoc); +#endif /* LIBXML_VALID_ENABLED */ + + /* + * Check for an Empty Element. + */ + if ((RAW == '/') && (NXT(1) == '>')) { + SKIP(2); + if (ctxt->sax2) { + if ((ctxt->sax != NULL) && (ctxt->sax->endElementNs != NULL) && + (!ctxt->disableSAX)) + ctxt->sax->endElementNs(ctxt->userData, name, prefix, URI); +#ifdef LIBXML_SAX1_ENABLED + } else { + if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL) && + (!ctxt->disableSAX)) + ctxt->sax->endElement(ctxt->userData, name); +#endif /* LIBXML_SAX1_ENABLED */ + } + namePop(ctxt); + spacePop(ctxt); + if (nsNr != ctxt->nsNr) + nsPop(ctxt, ctxt->nsNr - nsNr); + if ( ret != NULL && ctxt->record_info ) { + node_info.end_pos = ctxt->input->consumed + + (CUR_PTR - ctxt->input->base); + node_info.end_line = ctxt->input->line; + node_info.node = ret; + xmlParserAddNodeInfo(ctxt, &node_info); + } + return(1); + } + if (RAW == '>') { + NEXT1; + } else { + xmlFatalErrMsgStrIntStr(ctxt, XML_ERR_GT_REQUIRED, + "Couldn't find end of Start Tag %s line %d\n", + name, line, NULL); + + /* + * end of parsing of this node. + */ + nodePop(ctxt); + namePop(ctxt); + spacePop(ctxt); + if (nsNr != ctxt->nsNr) + nsPop(ctxt, ctxt->nsNr - nsNr); + + /* + * Capture end position and add node + */ + if ( ret != NULL && ctxt->record_info ) { + node_info.end_pos = ctxt->input->consumed + + (CUR_PTR - ctxt->input->base); + node_info.end_line = ctxt->input->line; + node_info.node = ret; + xmlParserAddNodeInfo(ctxt, &node_info); + } + return(-1); + } + + return(0); +} + +/** + * xmlParseElementEnd: + * @ctxt: an XML parser context + * + * Parse the end of an XML element. + */ +static void +xmlParseElementEnd(xmlParserCtxtPtr ctxt) { + xmlParserNodeInfo node_info; + xmlNodePtr ret = ctxt->node; + + if (ctxt->nameNr <= 0) + return; + + /* + * parse the end of tag: '</' should be here. + */ + if (ctxt->sax2) { + const xmlChar *prefix = ctxt->pushTab[ctxt->nameNr * 3 - 3]; + const xmlChar *URI = ctxt->pushTab[ctxt->nameNr * 3 - 2]; + int nsNr = (ptrdiff_t) ctxt->pushTab[ctxt->nameNr * 3 - 1]; + xmlParseEndTag2(ctxt, prefix, URI, 0, nsNr, 0); + namePop(ctxt); + } +#ifdef LIBXML_SAX1_ENABLED + else + xmlParseEndTag1(ctxt, 0); +#endif /* LIBXML_SAX1_ENABLED */ + + /* + * Capture end position and add node + */ + if ( ret != NULL && ctxt->record_info ) { + node_info.end_pos = ctxt->input->consumed + + (CUR_PTR - ctxt->input->base); + node_info.end_line = ctxt->input->line; + node_info.node = ret; + xmlParserAddNodeInfo(ctxt, &node_info); + } +} + +/** + * xmlParseVersionNum: + * @ctxt: an XML parser context + * + * parse the XML version value. + * + * [26] VersionNum ::= '1.' [0-9]+ + * + * In practice allow [0-9].[0-9]+ at that level + * + * Returns the string giving the XML version number, or NULL + */ +xmlChar * +xmlParseVersionNum(xmlParserCtxtPtr ctxt) { + xmlChar *buf = NULL; + int len = 0; + int size = 10; + xmlChar cur; + + buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar)); + if (buf == NULL) { + xmlErrMemory(ctxt, NULL); + return(NULL); + } + cur = CUR; + if (!((cur >= '0') && (cur <= '9'))) { + xmlFree(buf); + return(NULL); + } + buf[len++] = cur; + NEXT; + cur=CUR; + if (cur != '.') { + xmlFree(buf); + return(NULL); + } + buf[len++] = cur; + NEXT; + cur=CUR; + while ((cur >= '0') && (cur <= '9')) { + if (len + 1 >= size) { + xmlChar *tmp; + + size *= 2; + tmp = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar)); + if (tmp == NULL) { + xmlFree(buf); + xmlErrMemory(ctxt, NULL); + return(NULL); + } + buf = tmp; + } + buf[len++] = cur; + NEXT; + cur=CUR; + } + buf[len] = 0; + return(buf); +} + +/** + * xmlParseVersionInfo: + * @ctxt: an XML parser context + * + * parse the XML version. + * + * [24] VersionInfo ::= S 'version' Eq (' VersionNum ' | " VersionNum ") + * + * [25] Eq ::= S? '=' S? + * + * Returns the version string, e.g. "1.0" + */ + +xmlChar * +xmlParseVersionInfo(xmlParserCtxtPtr ctxt) { + xmlChar *version = NULL; + + if (CMP7(CUR_PTR, 'v', 'e', 'r', 's', 'i', 'o', 'n')) { + SKIP(7); + SKIP_BLANKS; + if (RAW != '=') { + xmlFatalErr(ctxt, XML_ERR_EQUAL_REQUIRED, NULL); + return(NULL); + } + NEXT; + SKIP_BLANKS; + if (RAW == '"') { + NEXT; + version = xmlParseVersionNum(ctxt); + if (RAW != '"') { + xmlFatalErr(ctxt, XML_ERR_STRING_NOT_CLOSED, NULL); + } else + NEXT; + } else if (RAW == '\''){ + NEXT; + version = xmlParseVersionNum(ctxt); + if (RAW != '\'') { + xmlFatalErr(ctxt, XML_ERR_STRING_NOT_CLOSED, NULL); + } else + NEXT; + } else { + xmlFatalErr(ctxt, XML_ERR_STRING_NOT_STARTED, NULL); + } + } + return(version); +} + +/** + * xmlParseEncName: + * @ctxt: an XML parser context + * + * parse the XML encoding name + * + * [81] EncName ::= [A-Za-z] ([A-Za-z0-9._] | '-')* + * + * Returns the encoding name value or NULL + */ +xmlChar * +xmlParseEncName(xmlParserCtxtPtr ctxt) { + xmlChar *buf = NULL; + int len = 0; + int size = 10; + xmlChar cur; + + cur = CUR; + if (((cur >= 'a') && (cur <= 'z')) || + ((cur >= 'A') && (cur <= 'Z'))) { + buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar)); + if (buf == NULL) { + xmlErrMemory(ctxt, NULL); + return(NULL); + } + + buf[len++] = cur; + NEXT; + cur = CUR; + while (((cur >= 'a') && (cur <= 'z')) || + ((cur >= 'A') && (cur <= 'Z')) || + ((cur >= '0') && (cur <= '9')) || + (cur == '.') || (cur == '_') || + (cur == '-')) { + if (len + 1 >= size) { + xmlChar *tmp; + + size *= 2; + tmp = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar)); + if (tmp == NULL) { + xmlErrMemory(ctxt, NULL); + xmlFree(buf); + return(NULL); + } + buf = tmp; + } + buf[len++] = cur; + NEXT; + cur = CUR; + if (cur == 0) { + SHRINK; + GROW; + cur = CUR; + } + } + buf[len] = 0; + } else { + xmlFatalErr(ctxt, XML_ERR_ENCODING_NAME, NULL); + } + return(buf); +} + +/** + * xmlParseEncodingDecl: + * @ctxt: an XML parser context + * + * parse the XML encoding declaration + * + * [80] EncodingDecl ::= S 'encoding' Eq ('"' EncName '"' | "'" EncName "'") + * + * this setups the conversion filters. + * + * Returns the encoding value or NULL + */ + +const xmlChar * +xmlParseEncodingDecl(xmlParserCtxtPtr ctxt) { + xmlChar *encoding = NULL; + + SKIP_BLANKS; + if (CMP8(CUR_PTR, 'e', 'n', 'c', 'o', 'd', 'i', 'n', 'g')) { + SKIP(8); + SKIP_BLANKS; + if (RAW != '=') { + xmlFatalErr(ctxt, XML_ERR_EQUAL_REQUIRED, NULL); + return(NULL); + } + NEXT; + SKIP_BLANKS; + if (RAW == '"') { + NEXT; + encoding = xmlParseEncName(ctxt); + if (RAW != '"') { + xmlFatalErr(ctxt, XML_ERR_STRING_NOT_CLOSED, NULL); + xmlFree((xmlChar *) encoding); + return(NULL); + } else + NEXT; + } else if (RAW == '\''){ + NEXT; + encoding = xmlParseEncName(ctxt); + if (RAW != '\'') { + xmlFatalErr(ctxt, XML_ERR_STRING_NOT_CLOSED, NULL); + xmlFree((xmlChar *) encoding); + return(NULL); + } else + NEXT; + } else { + xmlFatalErr(ctxt, XML_ERR_STRING_NOT_STARTED, NULL); + } + + /* + * Non standard parsing, allowing the user to ignore encoding + */ + if (ctxt->options & XML_PARSE_IGNORE_ENC) { + xmlFree((xmlChar *) encoding); + return(NULL); + } + + /* + * UTF-16 encoding switch has already taken place at this stage, + * more over the little-endian/big-endian selection is already done + */ + if ((encoding != NULL) && + ((!xmlStrcasecmp(encoding, BAD_CAST "UTF-16")) || + (!xmlStrcasecmp(encoding, BAD_CAST "UTF16")))) { + /* + * If no encoding was passed to the parser, that we are + * using UTF-16 and no decoder is present i.e. the + * document is apparently UTF-8 compatible, then raise an + * encoding mismatch fatal error + */ + if ((ctxt->encoding == NULL) && + (ctxt->input->buf != NULL) && + (ctxt->input->buf->encoder == NULL)) { + xmlFatalErrMsg(ctxt, XML_ERR_INVALID_ENCODING, + "Document labelled UTF-16 but has UTF-8 content\n"); + } + if (ctxt->encoding != NULL) + xmlFree((xmlChar *) ctxt->encoding); + ctxt->encoding = encoding; + } + /* + * UTF-8 encoding is handled natively + */ + else if ((encoding != NULL) && + ((!xmlStrcasecmp(encoding, BAD_CAST "UTF-8")) || + (!xmlStrcasecmp(encoding, BAD_CAST "UTF8")))) { + if (ctxt->encoding != NULL) + xmlFree((xmlChar *) ctxt->encoding); + ctxt->encoding = encoding; + } + else if (encoding != NULL) { + xmlCharEncodingHandlerPtr handler; + + if (ctxt->input->encoding != NULL) + xmlFree((xmlChar *) ctxt->input->encoding); + ctxt->input->encoding = encoding; + + handler = xmlFindCharEncodingHandler((const char *) encoding); + if (handler != NULL) { + if (xmlSwitchToEncoding(ctxt, handler) < 0) { + /* failed to convert */ + ctxt->errNo = XML_ERR_UNSUPPORTED_ENCODING; + return(NULL); + } + } else { + xmlFatalErrMsgStr(ctxt, XML_ERR_UNSUPPORTED_ENCODING, + "Unsupported encoding %s\n", encoding); + return(NULL); + } + } + } + return(encoding); +} + +/** + * xmlParseSDDecl: + * @ctxt: an XML parser context + * + * parse the XML standalone declaration + * + * [32] SDDecl ::= S 'standalone' Eq + * (("'" ('yes' | 'no') "'") | ('"' ('yes' | 'no')'"')) + * + * [ VC: Standalone Document Declaration ] + * TODO The standalone document declaration must have the value "no" + * if any external markup declarations contain declarations of: + * - attributes with default values, if elements to which these + * attributes apply appear in the document without specifications + * of values for these attributes, or + * - entities (other than amp, lt, gt, apos, quot), if references + * to those entities appear in the document, or + * - attributes with values subject to normalization, where the + * attribute appears in the document with a value which will change + * as a result of normalization, or + * - element types with element content, if white space occurs directly + * within any instance of those types. + * + * Returns: + * 1 if standalone="yes" + * 0 if standalone="no" + * -2 if standalone attribute is missing or invalid + * (A standalone value of -2 means that the XML declaration was found, + * but no value was specified for the standalone attribute). + */ + +int +xmlParseSDDecl(xmlParserCtxtPtr ctxt) { + int standalone = -2; + + SKIP_BLANKS; + if (CMP10(CUR_PTR, 's', 't', 'a', 'n', 'd', 'a', 'l', 'o', 'n', 'e')) { + SKIP(10); + SKIP_BLANKS; + if (RAW != '=') { + xmlFatalErr(ctxt, XML_ERR_EQUAL_REQUIRED, NULL); + return(standalone); + } + NEXT; + SKIP_BLANKS; + if (RAW == '\''){ + NEXT; + if ((RAW == 'n') && (NXT(1) == 'o')) { + standalone = 0; + SKIP(2); + } else if ((RAW == 'y') && (NXT(1) == 'e') && + (NXT(2) == 's')) { + standalone = 1; + SKIP(3); + } else { + xmlFatalErr(ctxt, XML_ERR_STANDALONE_VALUE, NULL); + } + if (RAW != '\'') { + xmlFatalErr(ctxt, XML_ERR_STRING_NOT_CLOSED, NULL); + } else + NEXT; + } else if (RAW == '"'){ + NEXT; + if ((RAW == 'n') && (NXT(1) == 'o')) { + standalone = 0; + SKIP(2); + } else if ((RAW == 'y') && (NXT(1) == 'e') && + (NXT(2) == 's')) { + standalone = 1; + SKIP(3); + } else { + xmlFatalErr(ctxt, XML_ERR_STANDALONE_VALUE, NULL); + } + if (RAW != '"') { + xmlFatalErr(ctxt, XML_ERR_STRING_NOT_CLOSED, NULL); + } else + NEXT; + } else { + xmlFatalErr(ctxt, XML_ERR_STRING_NOT_STARTED, NULL); + } + } + return(standalone); +} + +/** + * xmlParseXMLDecl: + * @ctxt: an XML parser context + * + * parse an XML declaration header + * + * [23] XMLDecl ::= '<?xml' VersionInfo EncodingDecl? SDDecl? S? '?>' + */ + +void +xmlParseXMLDecl(xmlParserCtxtPtr ctxt) { + xmlChar *version; + + /* + * This value for standalone indicates that the document has an + * XML declaration but it does not have a standalone attribute. + * It will be overwritten later if a standalone attribute is found. + */ + ctxt->input->standalone = -2; + + /* + * We know that '<?xml' is here. + */ + SKIP(5); + + if (!IS_BLANK_CH(RAW)) { + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, + "Blank needed after '<?xml'\n"); + } + SKIP_BLANKS; + + /* + * We must have the VersionInfo here. + */ + version = xmlParseVersionInfo(ctxt); + if (version == NULL) { + xmlFatalErr(ctxt, XML_ERR_VERSION_MISSING, NULL); + } else { + if (!xmlStrEqual(version, (const xmlChar *) XML_DEFAULT_VERSION)) { + /* + * Changed here for XML-1.0 5th edition + */ + if (ctxt->options & XML_PARSE_OLD10) { + xmlFatalErrMsgStr(ctxt, XML_ERR_UNKNOWN_VERSION, + "Unsupported version '%s'\n", + version); + } else { + if ((version[0] == '1') && ((version[1] == '.'))) { + xmlWarningMsg(ctxt, XML_WAR_UNKNOWN_VERSION, + "Unsupported version '%s'\n", + version, NULL); + } else { + xmlFatalErrMsgStr(ctxt, XML_ERR_UNKNOWN_VERSION, + "Unsupported version '%s'\n", + version); + } + } + } + if (ctxt->version != NULL) + xmlFree((void *) ctxt->version); + ctxt->version = version; + } + + /* + * We may have the encoding declaration + */ + if (!IS_BLANK_CH(RAW)) { + if ((RAW == '?') && (NXT(1) == '>')) { + SKIP(2); + return; + } + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, "Blank needed here\n"); + } + xmlParseEncodingDecl(ctxt); + if ((ctxt->errNo == XML_ERR_UNSUPPORTED_ENCODING) || + (ctxt->instate == XML_PARSER_EOF)) { + /* + * The XML REC instructs us to stop parsing right here + */ + return; + } + + /* + * We may have the standalone status. + */ + if ((ctxt->input->encoding != NULL) && (!IS_BLANK_CH(RAW))) { + if ((RAW == '?') && (NXT(1) == '>')) { + SKIP(2); + return; + } + xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, "Blank needed here\n"); + } + + /* + * We can grow the input buffer freely at that point + */ + GROW; + + SKIP_BLANKS; + ctxt->input->standalone = xmlParseSDDecl(ctxt); + + SKIP_BLANKS; + if ((RAW == '?') && (NXT(1) == '>')) { + SKIP(2); + } else if (RAW == '>') { + /* Deprecated old WD ... */ + xmlFatalErr(ctxt, XML_ERR_XMLDECL_NOT_FINISHED, NULL); + NEXT; + } else { + xmlFatalErr(ctxt, XML_ERR_XMLDECL_NOT_FINISHED, NULL); + MOVETO_ENDTAG(CUR_PTR); + NEXT; + } +} + +/** + * xmlParseMisc: + * @ctxt: an XML parser context + * + * parse an XML Misc* optional field. + * + * [27] Misc ::= Comment | PI | S + */ + +void +xmlParseMisc(xmlParserCtxtPtr ctxt) { + while ((ctxt->instate != XML_PARSER_EOF) && + (((RAW == '<') && (NXT(1) == '?')) || + (CMP4(CUR_PTR, '<', '!', '-', '-')) || + IS_BLANK_CH(CUR))) { + if ((RAW == '<') && (NXT(1) == '?')) { + xmlParsePI(ctxt); + } else if (IS_BLANK_CH(CUR)) { + NEXT; + } else + xmlParseComment(ctxt); + } +} + +/** + * xmlParseDocument: + * @ctxt: an XML parser context + * + * parse an XML document (and build a tree if using the standard SAX + * interface). + * + * [1] document ::= prolog element Misc* + * + * [22] prolog ::= XMLDecl? Misc* (doctypedecl Misc*)? + * + * Returns 0, -1 in case of error. the parser context is augmented + * as a result of the parsing. + */ + +int +xmlParseDocument(xmlParserCtxtPtr ctxt) { + xmlChar start[4]; + xmlCharEncoding enc; + + xmlInitParser(); + + if ((ctxt == NULL) || (ctxt->input == NULL)) + return(-1); + + GROW; + + /* + * SAX: detecting the level. + */ + xmlDetectSAX2(ctxt); + + /* + * SAX: beginning of the document processing. + */ + if ((ctxt->sax) && (ctxt->sax->setDocumentLocator)) + ctxt->sax->setDocumentLocator(ctxt->userData, &xmlDefaultSAXLocator); + if (ctxt->instate == XML_PARSER_EOF) + return(-1); + + if ((ctxt->encoding == NULL) && + ((ctxt->input->end - ctxt->input->cur) >= 4)) { + /* + * Get the 4 first bytes and decode the charset + * if enc != XML_CHAR_ENCODING_NONE + * plug some encoding conversion routines. + */ + start[0] = RAW; + start[1] = NXT(1); + start[2] = NXT(2); + start[3] = NXT(3); + enc = xmlDetectCharEncoding(&start[0], 4); + if (enc != XML_CHAR_ENCODING_NONE) { + xmlSwitchEncoding(ctxt, enc); + } + } + + + if (CUR == 0) { + xmlFatalErr(ctxt, XML_ERR_DOCUMENT_EMPTY, NULL); + return(-1); + } + + /* + * Check for the XMLDecl in the Prolog. + * do not GROW here to avoid the detected encoder to decode more + * than just the first line, unless the amount of data is really + * too small to hold "<?xml version="1.0" encoding="foo" + */ + if ((ctxt->input->end - ctxt->input->cur) < 35) { + GROW; + } + if ((CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) && (IS_BLANK_CH(NXT(5)))) { + + /* + * Note that we will switch encoding on the fly. + */ + xmlParseXMLDecl(ctxt); + if ((ctxt->errNo == XML_ERR_UNSUPPORTED_ENCODING) || + (ctxt->instate == XML_PARSER_EOF)) { + /* + * The XML REC instructs us to stop parsing right here + */ + return(-1); + } + ctxt->standalone = ctxt->input->standalone; + SKIP_BLANKS; + } else { + ctxt->version = xmlCharStrdup(XML_DEFAULT_VERSION); + } + if ((ctxt->sax) && (ctxt->sax->startDocument) && (!ctxt->disableSAX)) + ctxt->sax->startDocument(ctxt->userData); + if (ctxt->instate == XML_PARSER_EOF) + return(-1); + if ((ctxt->myDoc != NULL) && (ctxt->input != NULL) && + (ctxt->input->buf != NULL) && (ctxt->input->buf->compressed >= 0)) { + ctxt->myDoc->compression = ctxt->input->buf->compressed; + } + + /* + * The Misc part of the Prolog + */ + GROW; + xmlParseMisc(ctxt); + + /* + * Then possibly doc type declaration(s) and more Misc + * (doctypedecl Misc*)? + */ + GROW; + if (CMP9(CUR_PTR, '<', '!', 'D', 'O', 'C', 'T', 'Y', 'P', 'E')) { + + ctxt->inSubset = 1; + xmlParseDocTypeDecl(ctxt); + if (RAW == '[') { + ctxt->instate = XML_PARSER_DTD; + xmlParseInternalSubset(ctxt); + if (ctxt->instate == XML_PARSER_EOF) + return(-1); + } + + /* + * Create and update the external subset. + */ + ctxt->inSubset = 2; + if ((ctxt->sax != NULL) && (ctxt->sax->externalSubset != NULL) && + (!ctxt->disableSAX)) + ctxt->sax->externalSubset(ctxt->userData, ctxt->intSubName, + ctxt->extSubSystem, ctxt->extSubURI); + if (ctxt->instate == XML_PARSER_EOF) + return(-1); + ctxt->inSubset = 0; + + xmlCleanSpecialAttr(ctxt); + + ctxt->instate = XML_PARSER_PROLOG; + xmlParseMisc(ctxt); + } + + /* + * Time to start parsing the tree itself + */ + GROW; + if (RAW != '<') { + xmlFatalErrMsg(ctxt, XML_ERR_DOCUMENT_EMPTY, + "Start tag expected, '<' not found\n"); + } else { + ctxt->instate = XML_PARSER_CONTENT; + xmlParseElement(ctxt); + ctxt->instate = XML_PARSER_EPILOG; + + + /* + * The Misc part at the end + */ + xmlParseMisc(ctxt); + + if (RAW != 0) { + xmlFatalErr(ctxt, XML_ERR_DOCUMENT_END, NULL); + } + ctxt->instate = XML_PARSER_EOF; + } + + /* + * SAX: end of the document processing. + */ + if ((ctxt->sax) && (ctxt->sax->endDocument != NULL)) + ctxt->sax->endDocument(ctxt->userData); + + /* + * Remove locally kept entity definitions if the tree was not built + */ + if ((ctxt->myDoc != NULL) && + (xmlStrEqual(ctxt->myDoc->version, SAX_COMPAT_MODE))) { + xmlFreeDoc(ctxt->myDoc); + ctxt->myDoc = NULL; + } + + if ((ctxt->wellFormed) && (ctxt->myDoc != NULL)) { + ctxt->myDoc->properties |= XML_DOC_WELLFORMED; + if (ctxt->valid) + ctxt->myDoc->properties |= XML_DOC_DTDVALID; + if (ctxt->nsWellFormed) + ctxt->myDoc->properties |= XML_DOC_NSVALID; + if (ctxt->options & XML_PARSE_OLD10) + ctxt->myDoc->properties |= XML_DOC_OLD10; + } + if (! ctxt->wellFormed) { + ctxt->valid = 0; + return(-1); + } + return(0); +} + +/** + * xmlParseExtParsedEnt: + * @ctxt: an XML parser context + * + * parse a general parsed entity + * An external general parsed entity is well-formed if it matches the + * production labeled extParsedEnt. + * + * [78] extParsedEnt ::= TextDecl? content + * + * Returns 0, -1 in case of error. the parser context is augmented + * as a result of the parsing. + */ + +int +xmlParseExtParsedEnt(xmlParserCtxtPtr ctxt) { + xmlChar start[4]; + xmlCharEncoding enc; + + if ((ctxt == NULL) || (ctxt->input == NULL)) + return(-1); + + xmlDefaultSAXHandlerInit(); + + xmlDetectSAX2(ctxt); + + GROW; + + /* + * SAX: beginning of the document processing. + */ + if ((ctxt->sax) && (ctxt->sax->setDocumentLocator)) + ctxt->sax->setDocumentLocator(ctxt->userData, &xmlDefaultSAXLocator); + + /* + * Get the 4 first bytes and decode the charset + * if enc != XML_CHAR_ENCODING_NONE + * plug some encoding conversion routines. + */ + if ((ctxt->input->end - ctxt->input->cur) >= 4) { + start[0] = RAW; + start[1] = NXT(1); + start[2] = NXT(2); + start[3] = NXT(3); + enc = xmlDetectCharEncoding(start, 4); + if (enc != XML_CHAR_ENCODING_NONE) { + xmlSwitchEncoding(ctxt, enc); + } + } + + + if (CUR == 0) { + xmlFatalErr(ctxt, XML_ERR_DOCUMENT_EMPTY, NULL); + } + + /* + * Check for the XMLDecl in the Prolog. + */ + GROW; + if ((CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) && (IS_BLANK_CH(NXT(5)))) { + + /* + * Note that we will switch encoding on the fly. + */ + xmlParseXMLDecl(ctxt); + if (ctxt->errNo == XML_ERR_UNSUPPORTED_ENCODING) { + /* + * The XML REC instructs us to stop parsing right here + */ + return(-1); + } + SKIP_BLANKS; + } else { + ctxt->version = xmlCharStrdup(XML_DEFAULT_VERSION); + } + if ((ctxt->sax) && (ctxt->sax->startDocument) && (!ctxt->disableSAX)) + ctxt->sax->startDocument(ctxt->userData); + if (ctxt->instate == XML_PARSER_EOF) + return(-1); + + /* + * Doing validity checking on chunk doesn't make sense + */ + ctxt->instate = XML_PARSER_CONTENT; + ctxt->validate = 0; + ctxt->loadsubset = 0; + ctxt->depth = 0; + + xmlParseContent(ctxt); + if (ctxt->instate == XML_PARSER_EOF) + return(-1); + + if ((RAW == '<') && (NXT(1) == '/')) { + xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL); + } else if (RAW != 0) { + xmlFatalErr(ctxt, XML_ERR_EXTRA_CONTENT, NULL); + } + + /* + * SAX: end of the document processing. + */ + if ((ctxt->sax) && (ctxt->sax->endDocument != NULL)) + ctxt->sax->endDocument(ctxt->userData); + + if (! ctxt->wellFormed) return(-1); + return(0); +} + +#ifdef LIBXML_PUSH_ENABLED +/************************************************************************ + * * + * Progressive parsing interfaces * + * * + ************************************************************************/ + +/** + * xmlParseLookupSequence: + * @ctxt: an XML parser context + * @first: the first char to lookup + * @next: the next char to lookup or zero + * @third: the next char to lookup or zero + * + * Try to find if a sequence (first, next, third) or just (first next) or + * (first) is available in the input stream. + * This function has a side effect of (possibly) incrementing ctxt->checkIndex + * to avoid rescanning sequences of bytes, it DOES change the state of the + * parser, do not use liberally. + * + * Returns the index to the current parsing point if the full sequence + * is available, -1 otherwise. + */ +static int +xmlParseLookupSequence(xmlParserCtxtPtr ctxt, xmlChar first, + xmlChar next, xmlChar third) { + int base, len; + xmlParserInputPtr in; + const xmlChar *buf; + + in = ctxt->input; + if (in == NULL) return(-1); + base = in->cur - in->base; + if (base < 0) return(-1); + if (ctxt->checkIndex > base) + base = ctxt->checkIndex; + if (in->buf == NULL) { + buf = in->base; + len = in->length; + } else { + buf = xmlBufContent(in->buf->buffer); + len = xmlBufUse(in->buf->buffer); + } + /* take into account the sequence length */ + if (third) len -= 2; + else if (next) len --; + for (;base < len;base++) { + if (buf[base] == first) { + if (third != 0) { + if ((buf[base + 1] != next) || + (buf[base + 2] != third)) continue; + } else if (next != 0) { + if (buf[base + 1] != next) continue; + } + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + if (next == 0) + xmlGenericError(xmlGenericErrorContext, + "PP: lookup '%c' found at %d\n", + first, base); + else if (third == 0) + xmlGenericError(xmlGenericErrorContext, + "PP: lookup '%c%c' found at %d\n", + first, next, base); + else + xmlGenericError(xmlGenericErrorContext, + "PP: lookup '%c%c%c' found at %d\n", + first, next, third, base); +#endif + return(base - (in->cur - in->base)); + } + } + ctxt->checkIndex = base; +#ifdef DEBUG_PUSH + if (next == 0) + xmlGenericError(xmlGenericErrorContext, + "PP: lookup '%c' failed\n", first); + else if (third == 0) + xmlGenericError(xmlGenericErrorContext, + "PP: lookup '%c%c' failed\n", first, next); + else + xmlGenericError(xmlGenericErrorContext, + "PP: lookup '%c%c%c' failed\n", first, next, third); +#endif + return(-1); +} + +/** + * xmlParseGetLasts: + * @ctxt: an XML parser context + * @lastlt: pointer to store the last '<' from the input + * @lastgt: pointer to store the last '>' from the input + * + * Lookup the last < and > in the current chunk + */ +static void +xmlParseGetLasts(xmlParserCtxtPtr ctxt, const xmlChar **lastlt, + const xmlChar **lastgt) { + const xmlChar *tmp; + + if ((ctxt == NULL) || (lastlt == NULL) || (lastgt == NULL)) { + xmlGenericError(xmlGenericErrorContext, + "Internal error: xmlParseGetLasts\n"); + return; + } + if ((ctxt->progressive != 0) && (ctxt->inputNr == 1)) { + tmp = ctxt->input->end; + tmp--; + while ((tmp >= ctxt->input->base) && (*tmp != '<')) tmp--; + if (tmp < ctxt->input->base) { + *lastlt = NULL; + *lastgt = NULL; + } else { + *lastlt = tmp; + tmp++; + while ((tmp < ctxt->input->end) && (*tmp != '>')) { + if (*tmp == '\'') { + tmp++; + while ((tmp < ctxt->input->end) && (*tmp != '\'')) tmp++; + if (tmp < ctxt->input->end) tmp++; + } else if (*tmp == '"') { + tmp++; + while ((tmp < ctxt->input->end) && (*tmp != '"')) tmp++; + if (tmp < ctxt->input->end) tmp++; + } else + tmp++; + } + if (tmp < ctxt->input->end) + *lastgt = tmp; + else { + tmp = *lastlt; + tmp--; + while ((tmp >= ctxt->input->base) && (*tmp != '>')) tmp--; + if (tmp >= ctxt->input->base) + *lastgt = tmp; + else + *lastgt = NULL; + } + } + } else { + *lastlt = NULL; + *lastgt = NULL; + } +} +/** + * xmlCheckCdataPush: + * @cur: pointer to the block of characters + * @len: length of the block in bytes + * @complete: 1 if complete CDATA block is passed in, 0 if partial block + * + * Check that the block of characters is okay as SCdata content [20] + * + * Returns the number of bytes to pass if okay, a negative index where an + * UTF-8 error occurred otherwise + */ +static int +xmlCheckCdataPush(const xmlChar *utf, int len, int complete) { + int ix; + unsigned char c; + int codepoint; + + if ((utf == NULL) || (len <= 0)) + return(0); + + for (ix = 0; ix < len;) { /* string is 0-terminated */ + c = utf[ix]; + if ((c & 0x80) == 0x00) { /* 1-byte code, starts with 10 */ + if (c >= 0x20) + ix++; + else if ((c == 0xA) || (c == 0xD) || (c == 0x9)) + ix++; + else + return(-ix); + } else if ((c & 0xe0) == 0xc0) {/* 2-byte code, starts with 110 */ + if (ix + 2 > len) return(complete ? -ix : ix); + if ((utf[ix+1] & 0xc0 ) != 0x80) + return(-ix); + codepoint = (utf[ix] & 0x1f) << 6; + codepoint |= utf[ix+1] & 0x3f; + if (!xmlIsCharQ(codepoint)) + return(-ix); + ix += 2; + } else if ((c & 0xf0) == 0xe0) {/* 3-byte code, starts with 1110 */ + if (ix + 3 > len) return(complete ? -ix : ix); + if (((utf[ix+1] & 0xc0) != 0x80) || + ((utf[ix+2] & 0xc0) != 0x80)) + return(-ix); + codepoint = (utf[ix] & 0xf) << 12; + codepoint |= (utf[ix+1] & 0x3f) << 6; + codepoint |= utf[ix+2] & 0x3f; + if (!xmlIsCharQ(codepoint)) + return(-ix); + ix += 3; + } else if ((c & 0xf8) == 0xf0) {/* 4-byte code, starts with 11110 */ + if (ix + 4 > len) return(complete ? -ix : ix); + if (((utf[ix+1] & 0xc0) != 0x80) || + ((utf[ix+2] & 0xc0) != 0x80) || + ((utf[ix+3] & 0xc0) != 0x80)) + return(-ix); + codepoint = (utf[ix] & 0x7) << 18; + codepoint |= (utf[ix+1] & 0x3f) << 12; + codepoint |= (utf[ix+2] & 0x3f) << 6; + codepoint |= utf[ix+3] & 0x3f; + if (!xmlIsCharQ(codepoint)) + return(-ix); + ix += 4; + } else /* unknown encoding */ + return(-ix); + } + return(ix); +} + +/** + * xmlParseTryOrFinish: + * @ctxt: an XML parser context + * @terminate: last chunk indicator + * + * Try to progress on parsing + * + * Returns zero if no parsing was possible + */ +static int +xmlParseTryOrFinish(xmlParserCtxtPtr ctxt, int terminate) { + int ret = 0; + int avail, tlen; + xmlChar cur, next; + const xmlChar *lastlt, *lastgt; + + if (ctxt->input == NULL) + return(0); + +#ifdef DEBUG_PUSH + switch (ctxt->instate) { + case XML_PARSER_EOF: + xmlGenericError(xmlGenericErrorContext, + "PP: try EOF\n"); break; + case XML_PARSER_START: + xmlGenericError(xmlGenericErrorContext, + "PP: try START\n"); break; + case XML_PARSER_MISC: + xmlGenericError(xmlGenericErrorContext, + "PP: try MISC\n");break; + case XML_PARSER_COMMENT: + xmlGenericError(xmlGenericErrorContext, + "PP: try COMMENT\n");break; + case XML_PARSER_PROLOG: + xmlGenericError(xmlGenericErrorContext, + "PP: try PROLOG\n");break; + case XML_PARSER_START_TAG: + xmlGenericError(xmlGenericErrorContext, + "PP: try START_TAG\n");break; + case XML_PARSER_CONTENT: + xmlGenericError(xmlGenericErrorContext, + "PP: try CONTENT\n");break; + case XML_PARSER_CDATA_SECTION: + xmlGenericError(xmlGenericErrorContext, + "PP: try CDATA_SECTION\n");break; + case XML_PARSER_END_TAG: + xmlGenericError(xmlGenericErrorContext, + "PP: try END_TAG\n");break; + case XML_PARSER_ENTITY_DECL: + xmlGenericError(xmlGenericErrorContext, + "PP: try ENTITY_DECL\n");break; + case XML_PARSER_ENTITY_VALUE: + xmlGenericError(xmlGenericErrorContext, + "PP: try ENTITY_VALUE\n");break; + case XML_PARSER_ATTRIBUTE_VALUE: + xmlGenericError(xmlGenericErrorContext, + "PP: try ATTRIBUTE_VALUE\n");break; + case XML_PARSER_DTD: + xmlGenericError(xmlGenericErrorContext, + "PP: try DTD\n");break; + case XML_PARSER_EPILOG: + xmlGenericError(xmlGenericErrorContext, + "PP: try EPILOG\n");break; + case XML_PARSER_PI: + xmlGenericError(xmlGenericErrorContext, + "PP: try PI\n");break; + case XML_PARSER_IGNORE: + xmlGenericError(xmlGenericErrorContext, + "PP: try IGNORE\n");break; + } +#endif + + if ((ctxt->input != NULL) && + (ctxt->input->cur - ctxt->input->base > 4096)) { + xmlSHRINK(ctxt); + ctxt->checkIndex = 0; + } + xmlParseGetLasts(ctxt, &lastlt, &lastgt); + + while (ctxt->instate != XML_PARSER_EOF) { + if ((ctxt->errNo != XML_ERR_OK) && (ctxt->disableSAX == 1)) + return(0); + + if (ctxt->input == NULL) break; + if (ctxt->input->buf == NULL) + avail = ctxt->input->length - + (ctxt->input->cur - ctxt->input->base); + else { + /* + * If we are operating on converted input, try to flush + * remaining chars to avoid them stalling in the non-converted + * buffer. But do not do this in document start where + * encoding="..." may not have been read and we work on a + * guessed encoding. + */ + if ((ctxt->instate != XML_PARSER_START) && + (ctxt->input->buf->raw != NULL) && + (xmlBufIsEmpty(ctxt->input->buf->raw) == 0)) { + size_t base = xmlBufGetInputBase(ctxt->input->buf->buffer, + ctxt->input); + size_t current = ctxt->input->cur - ctxt->input->base; + + xmlParserInputBufferPush(ctxt->input->buf, 0, ""); + xmlBufSetInputBaseCur(ctxt->input->buf->buffer, ctxt->input, + base, current); + } + avail = xmlBufUse(ctxt->input->buf->buffer) - + (ctxt->input->cur - ctxt->input->base); + } + if (avail < 1) + goto done; + switch (ctxt->instate) { + case XML_PARSER_EOF: + /* + * Document parsing is done ! + */ + goto done; + case XML_PARSER_START: + if (ctxt->charset == XML_CHAR_ENCODING_NONE) { + xmlChar start[4]; + xmlCharEncoding enc; + + /* + * Very first chars read from the document flow. + */ + if (avail < 4) + goto done; + + /* + * Get the 4 first bytes and decode the charset + * if enc != XML_CHAR_ENCODING_NONE + * plug some encoding conversion routines, + * else xmlSwitchEncoding will set to (default) + * UTF8. + */ + start[0] = RAW; + start[1] = NXT(1); + start[2] = NXT(2); + start[3] = NXT(3); + enc = xmlDetectCharEncoding(start, 4); + xmlSwitchEncoding(ctxt, enc); + break; + } + + if (avail < 2) + goto done; + cur = ctxt->input->cur[0]; + next = ctxt->input->cur[1]; + if (cur == 0) { + if ((ctxt->sax) && (ctxt->sax->setDocumentLocator)) + ctxt->sax->setDocumentLocator(ctxt->userData, + &xmlDefaultSAXLocator); + xmlFatalErr(ctxt, XML_ERR_DOCUMENT_EMPTY, NULL); + xmlHaltParser(ctxt); +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering EOF\n"); +#endif + if ((ctxt->sax) && (ctxt->sax->endDocument != NULL)) + ctxt->sax->endDocument(ctxt->userData); + goto done; + } + if ((cur == '<') && (next == '?')) { + /* PI or XML decl */ + if (avail < 5) return(ret); + if ((!terminate) && + (xmlParseLookupSequence(ctxt, '?', '>', 0) < 0)) + return(ret); + if ((ctxt->sax) && (ctxt->sax->setDocumentLocator)) + ctxt->sax->setDocumentLocator(ctxt->userData, + &xmlDefaultSAXLocator); + if ((ctxt->input->cur[2] == 'x') && + (ctxt->input->cur[3] == 'm') && + (ctxt->input->cur[4] == 'l') && + (IS_BLANK_CH(ctxt->input->cur[5]))) { + ret += 5; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: Parsing XML Decl\n"); +#endif + xmlParseXMLDecl(ctxt); + if (ctxt->errNo == XML_ERR_UNSUPPORTED_ENCODING) { + /* + * The XML REC instructs us to stop parsing right + * here + */ + xmlHaltParser(ctxt); + return(0); + } + ctxt->standalone = ctxt->input->standalone; + if ((ctxt->encoding == NULL) && + (ctxt->input->encoding != NULL)) + ctxt->encoding = xmlStrdup(ctxt->input->encoding); + if ((ctxt->sax) && (ctxt->sax->startDocument) && + (!ctxt->disableSAX)) + ctxt->sax->startDocument(ctxt->userData); + ctxt->instate = XML_PARSER_MISC; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering MISC\n"); +#endif + } else { + ctxt->version = xmlCharStrdup(XML_DEFAULT_VERSION); + if ((ctxt->sax) && (ctxt->sax->startDocument) && + (!ctxt->disableSAX)) + ctxt->sax->startDocument(ctxt->userData); + ctxt->instate = XML_PARSER_MISC; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering MISC\n"); +#endif + } + } else { + if ((ctxt->sax) && (ctxt->sax->setDocumentLocator)) + ctxt->sax->setDocumentLocator(ctxt->userData, + &xmlDefaultSAXLocator); + ctxt->version = xmlCharStrdup(XML_DEFAULT_VERSION); + if (ctxt->version == NULL) { + xmlErrMemory(ctxt, NULL); + break; + } + if ((ctxt->sax) && (ctxt->sax->startDocument) && + (!ctxt->disableSAX)) + ctxt->sax->startDocument(ctxt->userData); + ctxt->instate = XML_PARSER_MISC; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering MISC\n"); +#endif + } + break; + case XML_PARSER_START_TAG: { + const xmlChar *name; + const xmlChar *prefix = NULL; + const xmlChar *URI = NULL; + int nsNr = ctxt->nsNr; + + if ((avail < 2) && (ctxt->inputNr == 1)) + goto done; + cur = ctxt->input->cur[0]; + if (cur != '<') { + xmlFatalErr(ctxt, XML_ERR_DOCUMENT_EMPTY, NULL); + xmlHaltParser(ctxt); + if ((ctxt->sax) && (ctxt->sax->endDocument != NULL)) + ctxt->sax->endDocument(ctxt->userData); + goto done; + } + if (!terminate) { + if (ctxt->progressive) { + /* > can be found unescaped in attribute values */ + if ((lastgt == NULL) || (ctxt->input->cur >= lastgt)) + goto done; + } else if (xmlParseLookupSequence(ctxt, '>', 0, 0) < 0) { + goto done; + } + } + if (ctxt->spaceNr == 0) + spacePush(ctxt, -1); + else if (*ctxt->space == -2) + spacePush(ctxt, -1); + else + spacePush(ctxt, *ctxt->space); +#ifdef LIBXML_SAX1_ENABLED + if (ctxt->sax2) +#endif /* LIBXML_SAX1_ENABLED */ + name = xmlParseStartTag2(ctxt, &prefix, &URI, &tlen); +#ifdef LIBXML_SAX1_ENABLED + else + name = xmlParseStartTag(ctxt); +#endif /* LIBXML_SAX1_ENABLED */ + if (ctxt->instate == XML_PARSER_EOF) + goto done; + if (name == NULL) { + spacePop(ctxt); + xmlHaltParser(ctxt); + if ((ctxt->sax) && (ctxt->sax->endDocument != NULL)) + ctxt->sax->endDocument(ctxt->userData); + goto done; + } +#ifdef LIBXML_VALID_ENABLED + /* + * [ VC: Root Element Type ] + * The Name in the document type declaration must match + * the element type of the root element. + */ + if (ctxt->validate && ctxt->wellFormed && ctxt->myDoc && + ctxt->node && (ctxt->node == ctxt->myDoc->children)) + ctxt->valid &= xmlValidateRoot(&ctxt->vctxt, ctxt->myDoc); +#endif /* LIBXML_VALID_ENABLED */ + + /* + * Check for an Empty Element. + */ + if ((RAW == '/') && (NXT(1) == '>')) { + SKIP(2); + + if (ctxt->sax2) { + if ((ctxt->sax != NULL) && + (ctxt->sax->endElementNs != NULL) && + (!ctxt->disableSAX)) + ctxt->sax->endElementNs(ctxt->userData, name, + prefix, URI); + if (ctxt->nsNr - nsNr > 0) + nsPop(ctxt, ctxt->nsNr - nsNr); +#ifdef LIBXML_SAX1_ENABLED + } else { + if ((ctxt->sax != NULL) && + (ctxt->sax->endElement != NULL) && + (!ctxt->disableSAX)) + ctxt->sax->endElement(ctxt->userData, name); +#endif /* LIBXML_SAX1_ENABLED */ + } + if (ctxt->instate == XML_PARSER_EOF) + goto done; + spacePop(ctxt); + if (ctxt->nameNr == 0) { + ctxt->instate = XML_PARSER_EPILOG; + } else { + ctxt->instate = XML_PARSER_CONTENT; + } + ctxt->progressive = 1; + break; + } + if (RAW == '>') { + NEXT; + } else { + xmlFatalErrMsgStr(ctxt, XML_ERR_GT_REQUIRED, + "Couldn't find end of Start Tag %s\n", + name); + nodePop(ctxt); + spacePop(ctxt); + } + if (ctxt->sax2) + nameNsPush(ctxt, name, prefix, URI, ctxt->nsNr - nsNr); +#ifdef LIBXML_SAX1_ENABLED + else + namePush(ctxt, name); +#endif /* LIBXML_SAX1_ENABLED */ + + ctxt->instate = XML_PARSER_CONTENT; + ctxt->progressive = 1; + break; + } + case XML_PARSER_CONTENT: { + const xmlChar *test; + unsigned int cons; + if ((avail < 2) && (ctxt->inputNr == 1)) + goto done; + cur = ctxt->input->cur[0]; + next = ctxt->input->cur[1]; + + test = CUR_PTR; + cons = ctxt->input->consumed; + if ((cur == '<') && (next == '/')) { + ctxt->instate = XML_PARSER_END_TAG; + break; + } else if ((cur == '<') && (next == '?')) { + if ((!terminate) && + (xmlParseLookupSequence(ctxt, '?', '>', 0) < 0)) { + ctxt->progressive = XML_PARSER_PI; + goto done; + } + xmlParsePI(ctxt); + ctxt->instate = XML_PARSER_CONTENT; + ctxt->progressive = 1; + } else if ((cur == '<') && (next != '!')) { + ctxt->instate = XML_PARSER_START_TAG; + break; + } else if ((cur == '<') && (next == '!') && + (ctxt->input->cur[2] == '-') && + (ctxt->input->cur[3] == '-')) { + int term; + + if (avail < 4) + goto done; + ctxt->input->cur += 4; + term = xmlParseLookupSequence(ctxt, '-', '-', '>'); + ctxt->input->cur -= 4; + if ((!terminate) && (term < 0)) { + ctxt->progressive = XML_PARSER_COMMENT; + goto done; + } + xmlParseComment(ctxt); + ctxt->instate = XML_PARSER_CONTENT; + ctxt->progressive = 1; + } else if ((cur == '<') && (ctxt->input->cur[1] == '!') && + (ctxt->input->cur[2] == '[') && + (ctxt->input->cur[3] == 'C') && + (ctxt->input->cur[4] == 'D') && + (ctxt->input->cur[5] == 'A') && + (ctxt->input->cur[6] == 'T') && + (ctxt->input->cur[7] == 'A') && + (ctxt->input->cur[8] == '[')) { + SKIP(9); + ctxt->instate = XML_PARSER_CDATA_SECTION; + break; + } else if ((cur == '<') && (next == '!') && + (avail < 9)) { + goto done; + } else if (cur == '&') { + if ((!terminate) && + (xmlParseLookupSequence(ctxt, ';', 0, 0) < 0)) + goto done; + xmlParseReference(ctxt); + } else { + /* TODO Avoid the extra copy, handle directly !!! */ + /* + * Goal of the following test is: + * - minimize calls to the SAX 'character' callback + * when they are mergeable + * - handle an problem for isBlank when we only parse + * a sequence of blank chars and the next one is + * not available to check against '<' presence. + * - tries to homogenize the differences in SAX + * callbacks between the push and pull versions + * of the parser. + */ + if ((ctxt->inputNr == 1) && + (avail < XML_PARSER_BIG_BUFFER_SIZE)) { + if (!terminate) { + if (ctxt->progressive) { + if ((lastlt == NULL) || + (ctxt->input->cur > lastlt)) + goto done; + } else if (xmlParseLookupSequence(ctxt, + '<', 0, 0) < 0) { + goto done; + } + } + } + ctxt->checkIndex = 0; + xmlParseCharData(ctxt, 0); + } + if ((cons == ctxt->input->consumed) && (test == CUR_PTR)) { + xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR, + "detected an error in element content\n"); + xmlHaltParser(ctxt); + break; + } + break; + } + case XML_PARSER_END_TAG: + if (avail < 2) + goto done; + if (!terminate) { + if (ctxt->progressive) { + /* > can be found unescaped in attribute values */ + if ((lastgt == NULL) || (ctxt->input->cur >= lastgt)) + goto done; + } else if (xmlParseLookupSequence(ctxt, '>', 0, 0) < 0) { + goto done; + } + } + if (ctxt->sax2) { + xmlParseEndTag2(ctxt, + (void *) ctxt->pushTab[ctxt->nameNr * 3 - 3], + (void *) ctxt->pushTab[ctxt->nameNr * 3 - 2], 0, + (int) (ptrdiff_t) + ctxt->pushTab[ctxt->nameNr * 3 - 1], 0); + nameNsPop(ctxt); + } +#ifdef LIBXML_SAX1_ENABLED + else + xmlParseEndTag1(ctxt, 0); +#endif /* LIBXML_SAX1_ENABLED */ + if (ctxt->instate == XML_PARSER_EOF) { + /* Nothing */ + } else if (ctxt->nameNr == 0) { + ctxt->instate = XML_PARSER_EPILOG; + } else { + ctxt->instate = XML_PARSER_CONTENT; + } + break; + case XML_PARSER_CDATA_SECTION: { + /* + * The Push mode need to have the SAX callback for + * cdataBlock merge back contiguous callbacks. + */ + int base; + + base = xmlParseLookupSequence(ctxt, ']', ']', '>'); + if (base < 0) { + if (avail >= XML_PARSER_BIG_BUFFER_SIZE + 2) { + int tmp; + + tmp = xmlCheckCdataPush(ctxt->input->cur, + XML_PARSER_BIG_BUFFER_SIZE, 0); + if (tmp < 0) { + tmp = -tmp; + ctxt->input->cur += tmp; + goto encoding_error; + } + if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) { + if (ctxt->sax->cdataBlock != NULL) + ctxt->sax->cdataBlock(ctxt->userData, + ctxt->input->cur, tmp); + else if (ctxt->sax->characters != NULL) + ctxt->sax->characters(ctxt->userData, + ctxt->input->cur, tmp); + } + if (ctxt->instate == XML_PARSER_EOF) + goto done; + SKIPL(tmp); + ctxt->checkIndex = 0; + } + goto done; + } else { + int tmp; + + tmp = xmlCheckCdataPush(ctxt->input->cur, base, 1); + if ((tmp < 0) || (tmp != base)) { + tmp = -tmp; + ctxt->input->cur += tmp; + goto encoding_error; + } + if ((ctxt->sax != NULL) && (base == 0) && + (ctxt->sax->cdataBlock != NULL) && + (!ctxt->disableSAX)) { + /* + * Special case to provide identical behaviour + * between pull and push parsers on enpty CDATA + * sections + */ + if ((ctxt->input->cur - ctxt->input->base >= 9) && + (!strncmp((const char *)&ctxt->input->cur[-9], + "<![CDATA[", 9))) + ctxt->sax->cdataBlock(ctxt->userData, + BAD_CAST "", 0); + } else if ((ctxt->sax != NULL) && (base > 0) && + (!ctxt->disableSAX)) { + if (ctxt->sax->cdataBlock != NULL) + ctxt->sax->cdataBlock(ctxt->userData, + ctxt->input->cur, base); + else if (ctxt->sax->characters != NULL) + ctxt->sax->characters(ctxt->userData, + ctxt->input->cur, base); + } + if (ctxt->instate == XML_PARSER_EOF) + goto done; + SKIPL(base + 3); + ctxt->checkIndex = 0; + ctxt->instate = XML_PARSER_CONTENT; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering CONTENT\n"); +#endif + } + break; + } + case XML_PARSER_MISC: + SKIP_BLANKS; + if (ctxt->input->buf == NULL) + avail = ctxt->input->length - + (ctxt->input->cur - ctxt->input->base); + else + avail = xmlBufUse(ctxt->input->buf->buffer) - + (ctxt->input->cur - ctxt->input->base); + if (avail < 2) + goto done; + cur = ctxt->input->cur[0]; + next = ctxt->input->cur[1]; + if ((cur == '<') && (next == '?')) { + if ((!terminate) && + (xmlParseLookupSequence(ctxt, '?', '>', 0) < 0)) { + ctxt->progressive = XML_PARSER_PI; + goto done; + } +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: Parsing PI\n"); +#endif + xmlParsePI(ctxt); + if (ctxt->instate == XML_PARSER_EOF) + goto done; + ctxt->instate = XML_PARSER_MISC; + ctxt->progressive = 1; + ctxt->checkIndex = 0; + } else if ((cur == '<') && (next == '!') && + (ctxt->input->cur[2] == '-') && + (ctxt->input->cur[3] == '-')) { + if ((!terminate) && + (xmlParseLookupSequence(ctxt, '-', '-', '>') < 0)) { + ctxt->progressive = XML_PARSER_COMMENT; + goto done; + } +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: Parsing Comment\n"); +#endif + xmlParseComment(ctxt); + if (ctxt->instate == XML_PARSER_EOF) + goto done; + ctxt->instate = XML_PARSER_MISC; + ctxt->progressive = 1; + ctxt->checkIndex = 0; + } else if ((cur == '<') && (next == '!') && + (ctxt->input->cur[2] == 'D') && + (ctxt->input->cur[3] == 'O') && + (ctxt->input->cur[4] == 'C') && + (ctxt->input->cur[5] == 'T') && + (ctxt->input->cur[6] == 'Y') && + (ctxt->input->cur[7] == 'P') && + (ctxt->input->cur[8] == 'E')) { + if ((!terminate) && + (xmlParseLookupSequence(ctxt, '>', 0, 0) < 0)) { + ctxt->progressive = XML_PARSER_DTD; + goto done; + } +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: Parsing internal subset\n"); +#endif + ctxt->inSubset = 1; + ctxt->progressive = 0; + ctxt->checkIndex = 0; + xmlParseDocTypeDecl(ctxt); + if (ctxt->instate == XML_PARSER_EOF) + goto done; + if (RAW == '[') { + ctxt->instate = XML_PARSER_DTD; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering DTD\n"); +#endif + } else { + /* + * Create and update the external subset. + */ + ctxt->inSubset = 2; + if ((ctxt->sax != NULL) && (!ctxt->disableSAX) && + (ctxt->sax->externalSubset != NULL)) + ctxt->sax->externalSubset(ctxt->userData, + ctxt->intSubName, ctxt->extSubSystem, + ctxt->extSubURI); + ctxt->inSubset = 0; + xmlCleanSpecialAttr(ctxt); + ctxt->instate = XML_PARSER_PROLOG; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering PROLOG\n"); +#endif + } + } else if ((cur == '<') && (next == '!') && + (avail < 9)) { + goto done; + } else { + ctxt->instate = XML_PARSER_START_TAG; + ctxt->progressive = XML_PARSER_START_TAG; + xmlParseGetLasts(ctxt, &lastlt, &lastgt); +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering START_TAG\n"); +#endif + } + break; + case XML_PARSER_PROLOG: + SKIP_BLANKS; + if (ctxt->input->buf == NULL) + avail = ctxt->input->length - (ctxt->input->cur - ctxt->input->base); + else + avail = xmlBufUse(ctxt->input->buf->buffer) - + (ctxt->input->cur - ctxt->input->base); + if (avail < 2) + goto done; + cur = ctxt->input->cur[0]; + next = ctxt->input->cur[1]; + if ((cur == '<') && (next == '?')) { + if ((!terminate) && + (xmlParseLookupSequence(ctxt, '?', '>', 0) < 0)) { + ctxt->progressive = XML_PARSER_PI; + goto done; + } +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: Parsing PI\n"); +#endif + xmlParsePI(ctxt); + if (ctxt->instate == XML_PARSER_EOF) + goto done; + ctxt->instate = XML_PARSER_PROLOG; + ctxt->progressive = 1; + } else if ((cur == '<') && (next == '!') && + (ctxt->input->cur[2] == '-') && (ctxt->input->cur[3] == '-')) { + if ((!terminate) && + (xmlParseLookupSequence(ctxt, '-', '-', '>') < 0)) { + ctxt->progressive = XML_PARSER_COMMENT; + goto done; + } +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: Parsing Comment\n"); +#endif + xmlParseComment(ctxt); + if (ctxt->instate == XML_PARSER_EOF) + goto done; + ctxt->instate = XML_PARSER_PROLOG; + ctxt->progressive = 1; + } else if ((cur == '<') && (next == '!') && + (avail < 4)) { + goto done; + } else { + ctxt->instate = XML_PARSER_START_TAG; + if (ctxt->progressive == 0) + ctxt->progressive = XML_PARSER_START_TAG; + xmlParseGetLasts(ctxt, &lastlt, &lastgt); +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering START_TAG\n"); +#endif + } + break; + case XML_PARSER_EPILOG: + SKIP_BLANKS; + if (ctxt->input->buf == NULL) + avail = ctxt->input->length - (ctxt->input->cur - ctxt->input->base); + else + avail = xmlBufUse(ctxt->input->buf->buffer) - + (ctxt->input->cur - ctxt->input->base); + if (avail < 2) + goto done; + cur = ctxt->input->cur[0]; + next = ctxt->input->cur[1]; + if ((cur == '<') && (next == '?')) { + if ((!terminate) && + (xmlParseLookupSequence(ctxt, '?', '>', 0) < 0)) { + ctxt->progressive = XML_PARSER_PI; + goto done; + } +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: Parsing PI\n"); +#endif + xmlParsePI(ctxt); + if (ctxt->instate == XML_PARSER_EOF) + goto done; + ctxt->instate = XML_PARSER_EPILOG; + ctxt->progressive = 1; + } else if ((cur == '<') && (next == '!') && + (ctxt->input->cur[2] == '-') && (ctxt->input->cur[3] == '-')) { + if ((!terminate) && + (xmlParseLookupSequence(ctxt, '-', '-', '>') < 0)) { + ctxt->progressive = XML_PARSER_COMMENT; + goto done; + } +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: Parsing Comment\n"); +#endif + xmlParseComment(ctxt); + if (ctxt->instate == XML_PARSER_EOF) + goto done; + ctxt->instate = XML_PARSER_EPILOG; + ctxt->progressive = 1; + } else if ((cur == '<') && (next == '!') && + (avail < 4)) { + goto done; + } else { + xmlFatalErr(ctxt, XML_ERR_DOCUMENT_END, NULL); + xmlHaltParser(ctxt); +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering EOF\n"); +#endif + if ((ctxt->sax) && (ctxt->sax->endDocument != NULL)) + ctxt->sax->endDocument(ctxt->userData); + goto done; + } + break; + case XML_PARSER_DTD: { + /* + * Sorry but progressive parsing of the internal subset + * is not expected to be supported. We first check that + * the full content of the internal subset is available and + * the parsing is launched only at that point. + * Internal subset ends up with "']' S? '>'" in an unescaped + * section and not in a ']]>' sequence which are conditional + * sections (whoever argued to keep that crap in XML deserve + * a place in hell !). + */ + int base, i; + xmlChar *buf; + xmlChar quote = 0; + size_t use; + + base = ctxt->input->cur - ctxt->input->base; + if (base < 0) return(0); + if (ctxt->checkIndex > base) + base = ctxt->checkIndex; + buf = xmlBufContent(ctxt->input->buf->buffer); + use = xmlBufUse(ctxt->input->buf->buffer); + for (;(unsigned int) base < use; base++) { + if (quote != 0) { + if (buf[base] == quote) + quote = 0; + continue; + } + if ((quote == 0) && (buf[base] == '<')) { + int found = 0; + /* special handling of comments */ + if (((unsigned int) base + 4 < use) && + (buf[base + 1] == '!') && + (buf[base + 2] == '-') && + (buf[base + 3] == '-')) { + for (;(unsigned int) base + 3 < use; base++) { + if ((buf[base] == '-') && + (buf[base + 1] == '-') && + (buf[base + 2] == '>')) { + found = 1; + base += 2; + break; + } + } + if (!found) { +#if 0 + fprintf(stderr, "unfinished comment\n"); +#endif + break; /* for */ + } + continue; + } + } + if (buf[base] == '"') { + quote = '"'; + continue; + } + if (buf[base] == '\'') { + quote = '\''; + continue; + } + if (buf[base] == ']') { +#if 0 + fprintf(stderr, "%c%c%c%c: ", buf[base], + buf[base + 1], buf[base + 2], buf[base + 3]); +#endif + if ((unsigned int) base +1 >= use) + break; + if (buf[base + 1] == ']') { + /* conditional crap, skip both ']' ! */ + base++; + continue; + } + for (i = 1; (unsigned int) base + i < use; i++) { + if (buf[base + i] == '>') { +#if 0 + fprintf(stderr, "found\n"); +#endif + goto found_end_int_subset; + } + if (!IS_BLANK_CH(buf[base + i])) { +#if 0 + fprintf(stderr, "not found\n"); +#endif + goto not_end_of_int_subset; + } + } +#if 0 + fprintf(stderr, "end of stream\n"); +#endif + break; + + } +not_end_of_int_subset: + continue; /* for */ + } + /* + * We didn't found the end of the Internal subset + */ + if (quote == 0) + ctxt->checkIndex = base; + else + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + if (next == 0) + xmlGenericError(xmlGenericErrorContext, + "PP: lookup of int subset end filed\n"); +#endif + goto done; + +found_end_int_subset: + ctxt->checkIndex = 0; + xmlParseInternalSubset(ctxt); + if (ctxt->instate == XML_PARSER_EOF) + goto done; + ctxt->inSubset = 2; + if ((ctxt->sax != NULL) && (!ctxt->disableSAX) && + (ctxt->sax->externalSubset != NULL)) + ctxt->sax->externalSubset(ctxt->userData, ctxt->intSubName, + ctxt->extSubSystem, ctxt->extSubURI); + ctxt->inSubset = 0; + xmlCleanSpecialAttr(ctxt); + if (ctxt->instate == XML_PARSER_EOF) + goto done; + ctxt->instate = XML_PARSER_PROLOG; + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering PROLOG\n"); +#endif + break; + } + case XML_PARSER_COMMENT: + xmlGenericError(xmlGenericErrorContext, + "PP: internal error, state == COMMENT\n"); + ctxt->instate = XML_PARSER_CONTENT; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering CONTENT\n"); +#endif + break; + case XML_PARSER_IGNORE: + xmlGenericError(xmlGenericErrorContext, + "PP: internal error, state == IGNORE"); + ctxt->instate = XML_PARSER_DTD; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering DTD\n"); +#endif + break; + case XML_PARSER_PI: + xmlGenericError(xmlGenericErrorContext, + "PP: internal error, state == PI\n"); + ctxt->instate = XML_PARSER_CONTENT; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering CONTENT\n"); +#endif + break; + case XML_PARSER_ENTITY_DECL: + xmlGenericError(xmlGenericErrorContext, + "PP: internal error, state == ENTITY_DECL\n"); + ctxt->instate = XML_PARSER_DTD; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering DTD\n"); +#endif + break; + case XML_PARSER_ENTITY_VALUE: + xmlGenericError(xmlGenericErrorContext, + "PP: internal error, state == ENTITY_VALUE\n"); + ctxt->instate = XML_PARSER_CONTENT; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering DTD\n"); +#endif + break; + case XML_PARSER_ATTRIBUTE_VALUE: + xmlGenericError(xmlGenericErrorContext, + "PP: internal error, state == ATTRIBUTE_VALUE\n"); + ctxt->instate = XML_PARSER_START_TAG; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering START_TAG\n"); +#endif + break; + case XML_PARSER_SYSTEM_LITERAL: + xmlGenericError(xmlGenericErrorContext, + "PP: internal error, state == SYSTEM_LITERAL\n"); + ctxt->instate = XML_PARSER_START_TAG; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering START_TAG\n"); +#endif + break; + case XML_PARSER_PUBLIC_LITERAL: + xmlGenericError(xmlGenericErrorContext, + "PP: internal error, state == PUBLIC_LITERAL\n"); + ctxt->instate = XML_PARSER_START_TAG; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "PP: entering START_TAG\n"); +#endif + break; + } + } +done: +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, "PP: done %d\n", ret); +#endif + return(ret); +encoding_error: + { + char buffer[150]; + + snprintf(buffer, 149, "Bytes: 0x%02X 0x%02X 0x%02X 0x%02X\n", + ctxt->input->cur[0], ctxt->input->cur[1], + ctxt->input->cur[2], ctxt->input->cur[3]); + __xmlErrEncoding(ctxt, XML_ERR_INVALID_CHAR, + "Input is not proper UTF-8, indicate encoding !\n%s", + BAD_CAST buffer, NULL); + } + return(0); +} + +/** + * xmlParseCheckTransition: + * @ctxt: an XML parser context + * @chunk: a char array + * @size: the size in byte of the chunk + * + * Check depending on the current parser state if the chunk given must be + * processed immediately or one need more data to advance on parsing. + * + * Returns -1 in case of error, 0 if the push is not needed and 1 if needed + */ +static int +xmlParseCheckTransition(xmlParserCtxtPtr ctxt, const char *chunk, int size) { + if ((ctxt == NULL) || (chunk == NULL) || (size < 0)) + return(-1); + if (ctxt->instate == XML_PARSER_START_TAG) { + if (memchr(chunk, '>', size) != NULL) + return(1); + return(0); + } + if (ctxt->progressive == XML_PARSER_COMMENT) { + if (memchr(chunk, '>', size) != NULL) + return(1); + return(0); + } + if (ctxt->instate == XML_PARSER_CDATA_SECTION) { + if (memchr(chunk, '>', size) != NULL) + return(1); + return(0); + } + if (ctxt->progressive == XML_PARSER_PI) { + if (memchr(chunk, '>', size) != NULL) + return(1); + return(0); + } + if (ctxt->instate == XML_PARSER_END_TAG) { + if (memchr(chunk, '>', size) != NULL) + return(1); + return(0); + } + if ((ctxt->progressive == XML_PARSER_DTD) || + (ctxt->instate == XML_PARSER_DTD)) { + if (memchr(chunk, '>', size) != NULL) + return(1); + return(0); + } + return(1); +} + +/** + * xmlParseChunk: + * @ctxt: an XML parser context + * @chunk: an char array + * @size: the size in byte of the chunk + * @terminate: last chunk indicator + * + * Parse a Chunk of memory + * + * Returns zero if no error, the xmlParserErrors otherwise. + */ +int +xmlParseChunk(xmlParserCtxtPtr ctxt, const char *chunk, int size, + int terminate) { + int end_in_lf = 0; + int remain = 0; + size_t old_avail = 0; + size_t avail = 0; + + if (ctxt == NULL) + return(XML_ERR_INTERNAL_ERROR); + if ((ctxt->errNo != XML_ERR_OK) && (ctxt->disableSAX == 1)) + return(ctxt->errNo); + if (ctxt->instate == XML_PARSER_EOF) + return(-1); + if (ctxt->instate == XML_PARSER_START) + xmlDetectSAX2(ctxt); + if ((size > 0) && (chunk != NULL) && (!terminate) && + (chunk[size - 1] == '\r')) { + end_in_lf = 1; + size--; + } + +xmldecl_done: + + if ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) && + (ctxt->input->buf != NULL) && (ctxt->instate != XML_PARSER_EOF)) { + size_t base = xmlBufGetInputBase(ctxt->input->buf->buffer, ctxt->input); + size_t cur = ctxt->input->cur - ctxt->input->base; + int res; + + old_avail = xmlBufUse(ctxt->input->buf->buffer); + /* + * Specific handling if we autodetected an encoding, we should not + * push more than the first line ... which depend on the encoding + * And only push the rest once the final encoding was detected + */ + if ((ctxt->instate == XML_PARSER_START) && (ctxt->input != NULL) && + (ctxt->input->buf != NULL) && (ctxt->input->buf->encoder != NULL)) { + unsigned int len = 45; + + if ((xmlStrcasestr(BAD_CAST ctxt->input->buf->encoder->name, + BAD_CAST "UTF-16")) || + (xmlStrcasestr(BAD_CAST ctxt->input->buf->encoder->name, + BAD_CAST "UTF16"))) + len = 90; + else if ((xmlStrcasestr(BAD_CAST ctxt->input->buf->encoder->name, + BAD_CAST "UCS-4")) || + (xmlStrcasestr(BAD_CAST ctxt->input->buf->encoder->name, + BAD_CAST "UCS4"))) + len = 180; + + if (ctxt->input->buf->rawconsumed < len) + len -= ctxt->input->buf->rawconsumed; + + /* + * Change size for reading the initial declaration only + * if size is greater than len. Otherwise, memmove in xmlBufferAdd + * will blindly copy extra bytes from memory. + */ + if ((unsigned int) size > len) { + remain = size - len; + size = len; + } else { + remain = 0; + } + } + res = xmlParserInputBufferPush(ctxt->input->buf, size, chunk); + if (res < 0) { + ctxt->errNo = XML_PARSER_EOF; + xmlHaltParser(ctxt); + return (XML_PARSER_EOF); + } + xmlBufSetInputBaseCur(ctxt->input->buf->buffer, ctxt->input, base, cur); +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, "PP: pushed %d\n", size); +#endif + + } else if (ctxt->instate != XML_PARSER_EOF) { + if ((ctxt->input != NULL) && ctxt->input->buf != NULL) { + xmlParserInputBufferPtr in = ctxt->input->buf; + if ((in->encoder != NULL) && (in->buffer != NULL) && + (in->raw != NULL)) { + int nbchars; + size_t base = xmlBufGetInputBase(in->buffer, ctxt->input); + size_t current = ctxt->input->cur - ctxt->input->base; + + nbchars = xmlCharEncInput(in, terminate); + if (nbchars < 0) { + /* TODO 2.6.0 */ + xmlGenericError(xmlGenericErrorContext, + "xmlParseChunk: encoder error\n"); + xmlHaltParser(ctxt); + return(XML_ERR_INVALID_ENCODING); + } + xmlBufSetInputBaseCur(in->buffer, ctxt->input, base, current); + } + } + } + if (remain != 0) { + xmlParseTryOrFinish(ctxt, 0); + } else { + if ((ctxt->input != NULL) && (ctxt->input->buf != NULL)) + avail = xmlBufUse(ctxt->input->buf->buffer); + /* + * Depending on the current state it may not be such + * a good idea to try parsing if there is nothing in the chunk + * which would be worth doing a parser state transition and we + * need to wait for more data + */ + if ((terminate) || (avail > XML_MAX_TEXT_LENGTH) || + (old_avail == 0) || (avail == 0) || + (xmlParseCheckTransition(ctxt, + (const char *)&ctxt->input->base[old_avail], + avail - old_avail))) + xmlParseTryOrFinish(ctxt, terminate); + } + if (ctxt->instate == XML_PARSER_EOF) + return(ctxt->errNo); + + if ((ctxt->input != NULL) && + (((ctxt->input->end - ctxt->input->cur) > XML_MAX_LOOKUP_LIMIT) || + ((ctxt->input->cur - ctxt->input->base) > XML_MAX_LOOKUP_LIMIT)) && + ((ctxt->options & XML_PARSE_HUGE) == 0)) { + xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR, "Huge input lookup"); + xmlHaltParser(ctxt); + } + if ((ctxt->errNo != XML_ERR_OK) && (ctxt->disableSAX == 1)) + return(ctxt->errNo); + + if (remain != 0) { + chunk += size; + size = remain; + remain = 0; + goto xmldecl_done; + } + if ((end_in_lf == 1) && (ctxt->input != NULL) && + (ctxt->input->buf != NULL)) { + size_t base = xmlBufGetInputBase(ctxt->input->buf->buffer, + ctxt->input); + size_t current = ctxt->input->cur - ctxt->input->base; + + xmlParserInputBufferPush(ctxt->input->buf, 1, "\r"); + + xmlBufSetInputBaseCur(ctxt->input->buf->buffer, ctxt->input, + base, current); + } + if (terminate) { + /* + * Check for termination + */ + int cur_avail = 0; + + if (ctxt->input != NULL) { + if (ctxt->input->buf == NULL) + cur_avail = ctxt->input->length - + (ctxt->input->cur - ctxt->input->base); + else + cur_avail = xmlBufUse(ctxt->input->buf->buffer) - + (ctxt->input->cur - ctxt->input->base); + } + + if ((ctxt->instate != XML_PARSER_EOF) && + (ctxt->instate != XML_PARSER_EPILOG)) { + xmlFatalErr(ctxt, XML_ERR_DOCUMENT_END, NULL); + } + if ((ctxt->instate == XML_PARSER_EPILOG) && (cur_avail > 0)) { + xmlFatalErr(ctxt, XML_ERR_DOCUMENT_END, NULL); + } + if (ctxt->instate != XML_PARSER_EOF) { + if ((ctxt->sax) && (ctxt->sax->endDocument != NULL)) + ctxt->sax->endDocument(ctxt->userData); + } + ctxt->instate = XML_PARSER_EOF; + } + if (ctxt->wellFormed == 0) + return((xmlParserErrors) ctxt->errNo); + else + return(0); +} + +/************************************************************************ + * * + * I/O front end functions to the parser * + * * + ************************************************************************/ + +/** + * xmlCreatePushParserCtxt: + * @sax: a SAX handler + * @user_data: The user data returned on SAX callbacks + * @chunk: a pointer to an array of chars + * @size: number of chars in the array + * @filename: an optional file name or URI + * + * Create a parser context for using the XML parser in push mode. + * If @buffer and @size are non-NULL, the data is used to detect + * the encoding. The remaining characters will be parsed so they + * don't need to be fed in again through xmlParseChunk. + * To allow content encoding detection, @size should be >= 4 + * The value of @filename is used for fetching external entities + * and error/warning reports. + * + * Returns the new parser context or NULL + */ + +xmlParserCtxtPtr +xmlCreatePushParserCtxt(xmlSAXHandlerPtr sax, void *user_data, + const char *chunk, int size, const char *filename) { + xmlParserCtxtPtr ctxt; + xmlParserInputPtr inputStream; + xmlParserInputBufferPtr buf; + xmlCharEncoding enc = XML_CHAR_ENCODING_NONE; + + /* + * plug some encoding conversion routines + */ + if ((chunk != NULL) && (size >= 4)) + enc = xmlDetectCharEncoding((const xmlChar *) chunk, size); + + buf = xmlAllocParserInputBuffer(enc); + if (buf == NULL) return(NULL); + + ctxt = xmlNewParserCtxt(); + if (ctxt == NULL) { + xmlErrMemory(NULL, "creating parser: out of memory\n"); + xmlFreeParserInputBuffer(buf); + return(NULL); + } + ctxt->dictNames = 1; + if (sax != NULL) { +#ifdef LIBXML_SAX1_ENABLED + if (ctxt->sax != (xmlSAXHandlerPtr) &xmlDefaultSAXHandler) +#endif /* LIBXML_SAX1_ENABLED */ + xmlFree(ctxt->sax); + ctxt->sax = (xmlSAXHandlerPtr) xmlMalloc(sizeof(xmlSAXHandler)); + if (ctxt->sax == NULL) { + xmlErrMemory(ctxt, NULL); + xmlFreeParserInputBuffer(buf); + xmlFreeParserCtxt(ctxt); + return(NULL); + } + memset(ctxt->sax, 0, sizeof(xmlSAXHandler)); + if (sax->initialized == XML_SAX2_MAGIC) + memcpy(ctxt->sax, sax, sizeof(xmlSAXHandler)); + else + memcpy(ctxt->sax, sax, sizeof(xmlSAXHandlerV1)); + if (user_data != NULL) + ctxt->userData = user_data; + } + if (filename == NULL) { + ctxt->directory = NULL; + } else { + ctxt->directory = xmlParserGetDirectory(filename); + } + + inputStream = xmlNewInputStream(ctxt); + if (inputStream == NULL) { + xmlFreeParserCtxt(ctxt); + xmlFreeParserInputBuffer(buf); + return(NULL); + } + + if (filename == NULL) + inputStream->filename = NULL; + else { + inputStream->filename = (char *) + xmlCanonicPath((const xmlChar *) filename); + if (inputStream->filename == NULL) { + xmlFreeParserCtxt(ctxt); + xmlFreeParserInputBuffer(buf); + return(NULL); + } + } + inputStream->buf = buf; + xmlBufResetInput(inputStream->buf->buffer, inputStream); + inputPush(ctxt, inputStream); + + /* + * If the caller didn't provide an initial 'chunk' for determining + * the encoding, we set the context to XML_CHAR_ENCODING_NONE so + * that it can be automatically determined later + */ + if ((size == 0) || (chunk == NULL)) { + ctxt->charset = XML_CHAR_ENCODING_NONE; + } else if ((ctxt->input != NULL) && (ctxt->input->buf != NULL)) { + size_t base = xmlBufGetInputBase(ctxt->input->buf->buffer, ctxt->input); + size_t cur = ctxt->input->cur - ctxt->input->base; + + xmlParserInputBufferPush(ctxt->input->buf, size, chunk); + + xmlBufSetInputBaseCur(ctxt->input->buf->buffer, ctxt->input, base, cur); +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, "PP: pushed %d\n", size); +#endif + } + + if (enc != XML_CHAR_ENCODING_NONE) { + xmlSwitchEncoding(ctxt, enc); + } + + return(ctxt); +} +#endif /* LIBXML_PUSH_ENABLED */ + +/** + * xmlHaltParser: + * @ctxt: an XML parser context + * + * Blocks further parser processing don't override error + * for internal use + */ +static void +xmlHaltParser(xmlParserCtxtPtr ctxt) { + if (ctxt == NULL) + return; + ctxt->instate = XML_PARSER_EOF; + ctxt->disableSAX = 1; + while (ctxt->inputNr > 1) + xmlFreeInputStream(inputPop(ctxt)); + if (ctxt->input != NULL) { + /* + * in case there was a specific allocation deallocate before + * overriding base + */ + if (ctxt->input->free != NULL) { + ctxt->input->free((xmlChar *) ctxt->input->base); + ctxt->input->free = NULL; + } + if (ctxt->input->buf != NULL) { + xmlFreeParserInputBuffer(ctxt->input->buf); + ctxt->input->buf = NULL; + } + ctxt->input->cur = BAD_CAST""; + ctxt->input->length = 0; + ctxt->input->base = ctxt->input->cur; + ctxt->input->end = ctxt->input->cur; + } +} + +/** + * xmlStopParser: + * @ctxt: an XML parser context + * + * Blocks further parser processing + */ +void +xmlStopParser(xmlParserCtxtPtr ctxt) { + if (ctxt == NULL) + return; + xmlHaltParser(ctxt); + ctxt->errNo = XML_ERR_USER_STOP; +} + +/** + * xmlCreateIOParserCtxt: + * @sax: a SAX handler + * @user_data: The user data returned on SAX callbacks + * @ioread: an I/O read function + * @ioclose: an I/O close function + * @ioctx: an I/O handler + * @enc: the charset encoding if known + * + * Create a parser context for using the XML parser with an existing + * I/O stream + * + * Returns the new parser context or NULL + */ +xmlParserCtxtPtr +xmlCreateIOParserCtxt(xmlSAXHandlerPtr sax, void *user_data, + xmlInputReadCallback ioread, xmlInputCloseCallback ioclose, + void *ioctx, xmlCharEncoding enc) { + xmlParserCtxtPtr ctxt; + xmlParserInputPtr inputStream; + xmlParserInputBufferPtr buf; + + if (ioread == NULL) return(NULL); + + buf = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx, enc); + if (buf == NULL) { + if (ioclose != NULL) + ioclose(ioctx); + return (NULL); + } + + ctxt = xmlNewParserCtxt(); + if (ctxt == NULL) { + xmlFreeParserInputBuffer(buf); + return(NULL); + } + if (sax != NULL) { +#ifdef LIBXML_SAX1_ENABLED + if (ctxt->sax != (xmlSAXHandlerPtr) &xmlDefaultSAXHandler) +#endif /* LIBXML_SAX1_ENABLED */ + xmlFree(ctxt->sax); + ctxt->sax = (xmlSAXHandlerPtr) xmlMalloc(sizeof(xmlSAXHandler)); + if (ctxt->sax == NULL) { + xmlErrMemory(ctxt, NULL); + xmlFreeParserCtxt(ctxt); + return(NULL); + } + memset(ctxt->sax, 0, sizeof(xmlSAXHandler)); + if (sax->initialized == XML_SAX2_MAGIC) + memcpy(ctxt->sax, sax, sizeof(xmlSAXHandler)); + else + memcpy(ctxt->sax, sax, sizeof(xmlSAXHandlerV1)); + if (user_data != NULL) + ctxt->userData = user_data; + } + + inputStream = xmlNewIOInputStream(ctxt, buf, enc); + if (inputStream == NULL) { + xmlFreeParserCtxt(ctxt); + return(NULL); + } + inputPush(ctxt, inputStream); + + return(ctxt); +} + +#ifdef LIBXML_VALID_ENABLED +/************************************************************************ + * * + * Front ends when parsing a DTD * + * * + ************************************************************************/ + +/** + * xmlIOParseDTD: + * @sax: the SAX handler block or NULL + * @input: an Input Buffer + * @enc: the charset encoding if known + * + * Load and parse a DTD + * + * Returns the resulting xmlDtdPtr or NULL in case of error. + * @input will be freed by the function in any case. + */ + +xmlDtdPtr +xmlIOParseDTD(xmlSAXHandlerPtr sax, xmlParserInputBufferPtr input, + xmlCharEncoding enc) { + xmlDtdPtr ret = NULL; + xmlParserCtxtPtr ctxt; + xmlParserInputPtr pinput = NULL; + xmlChar start[4]; + + if (input == NULL) + return(NULL); + + ctxt = xmlNewParserCtxt(); + if (ctxt == NULL) { + xmlFreeParserInputBuffer(input); + return(NULL); + } + + /* We are loading a DTD */ + ctxt->options |= XML_PARSE_DTDLOAD; + + /* + * Set-up the SAX context + */ + if (sax != NULL) { + if (ctxt->sax != NULL) + xmlFree(ctxt->sax); + ctxt->sax = sax; + ctxt->userData = ctxt; + } + xmlDetectSAX2(ctxt); + + /* + * generate a parser input from the I/O handler + */ + + pinput = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE); + if (pinput == NULL) { + if (sax != NULL) ctxt->sax = NULL; + xmlFreeParserInputBuffer(input); + xmlFreeParserCtxt(ctxt); + return(NULL); + } + + /* + * plug some encoding conversion routines here. + */ + if (xmlPushInput(ctxt, pinput) < 0) { + if (sax != NULL) ctxt->sax = NULL; + xmlFreeParserCtxt(ctxt); + return(NULL); + } + if (enc != XML_CHAR_ENCODING_NONE) { + xmlSwitchEncoding(ctxt, enc); + } + + pinput->filename = NULL; + pinput->line = 1; + pinput->col = 1; + pinput->base = ctxt->input->cur; + pinput->cur = ctxt->input->cur; + pinput->free = NULL; + + /* + * let's parse that entity knowing it's an external subset. + */ + ctxt->inSubset = 2; + ctxt->myDoc = xmlNewDoc(BAD_CAST "1.0"); + if (ctxt->myDoc == NULL) { + xmlErrMemory(ctxt, "New Doc failed"); + return(NULL); + } + ctxt->myDoc->properties = XML_DOC_INTERNAL; + ctxt->myDoc->extSubset = xmlNewDtd(ctxt->myDoc, BAD_CAST "none", + BAD_CAST "none", BAD_CAST "none"); + + if ((enc == XML_CHAR_ENCODING_NONE) && + ((ctxt->input->end - ctxt->input->cur) >= 4)) { + /* + * Get the 4 first bytes and decode the charset + * if enc != XML_CHAR_ENCODING_NONE + * plug some encoding conversion routines. + */ + start[0] = RAW; + start[1] = NXT(1); + start[2] = NXT(2); + start[3] = NXT(3); + enc = xmlDetectCharEncoding(start, 4); + if (enc != XML_CHAR_ENCODING_NONE) { + xmlSwitchEncoding(ctxt, enc); + } + } + + xmlParseExternalSubset(ctxt, BAD_CAST "none", BAD_CAST "none"); + + if (ctxt->myDoc != NULL) { + if (ctxt->wellFormed) { + ret = ctxt->myDoc->extSubset; + ctxt->myDoc->extSubset = NULL; + if (ret != NULL) { + xmlNodePtr tmp; + + ret->doc = NULL; + tmp = ret->children; + while (tmp != NULL) { + tmp->doc = NULL; + tmp = tmp->next; + } + } + } else { + ret = NULL; + } + xmlFreeDoc(ctxt->myDoc); + ctxt->myDoc = NULL; + } + if (sax != NULL) ctxt->sax = NULL; + xmlFreeParserCtxt(ctxt); + + return(ret); +} + +/** + * xmlSAXParseDTD: + * @sax: the SAX handler block + * @ExternalID: a NAME* containing the External ID of the DTD + * @SystemID: a NAME* containing the URL to the DTD + * + * Load and parse an external subset. + * + * Returns the resulting xmlDtdPtr or NULL in case of error. + */ + +xmlDtdPtr +xmlSAXParseDTD(xmlSAXHandlerPtr sax, const xmlChar *ExternalID, + const xmlChar *SystemID) { + xmlDtdPtr ret = NULL; + xmlParserCtxtPtr ctxt; + xmlParserInputPtr input = NULL; + xmlCharEncoding enc; + xmlChar* systemIdCanonic; + + if ((ExternalID == NULL) && (SystemID == NULL)) return(NULL); + + ctxt = xmlNewParserCtxt(); + if (ctxt == NULL) { + return(NULL); + } + + /* We are loading a DTD */ + ctxt->options |= XML_PARSE_DTDLOAD; + + /* + * Set-up the SAX context + */ + if (sax != NULL) { + if (ctxt->sax != NULL) + xmlFree(ctxt->sax); + ctxt->sax = sax; + ctxt->userData = ctxt; + } + + /* + * Canonicalise the system ID + */ + systemIdCanonic = xmlCanonicPath(SystemID); + if ((SystemID != NULL) && (systemIdCanonic == NULL)) { + xmlFreeParserCtxt(ctxt); + return(NULL); + } + + /* + * Ask the Entity resolver to load the damn thing + */ + + if ((ctxt->sax != NULL) && (ctxt->sax->resolveEntity != NULL)) + input = ctxt->sax->resolveEntity(ctxt->userData, ExternalID, + systemIdCanonic); + if (input == NULL) { + if (sax != NULL) ctxt->sax = NULL; + xmlFreeParserCtxt(ctxt); + if (systemIdCanonic != NULL) + xmlFree(systemIdCanonic); + return(NULL); + } + + /* + * plug some encoding conversion routines here. + */ + if (xmlPushInput(ctxt, input) < 0) { + if (sax != NULL) ctxt->sax = NULL; + xmlFreeParserCtxt(ctxt); + if (systemIdCanonic != NULL) + xmlFree(systemIdCanonic); + return(NULL); + } + if ((ctxt->input->end - ctxt->input->cur) >= 4) { + enc = xmlDetectCharEncoding(ctxt->input->cur, 4); + xmlSwitchEncoding(ctxt, enc); + } + + if (input->filename == NULL) + input->filename = (char *) systemIdCanonic; + else + xmlFree(systemIdCanonic); + input->line = 1; + input->col = 1; + input->base = ctxt->input->cur; + input->cur = ctxt->input->cur; + input->free = NULL; + + /* + * let's parse that entity knowing it's an external subset. + */ + ctxt->inSubset = 2; + ctxt->myDoc = xmlNewDoc(BAD_CAST "1.0"); + if (ctxt->myDoc == NULL) { + xmlErrMemory(ctxt, "New Doc failed"); + if (sax != NULL) ctxt->sax = NULL; + xmlFreeParserCtxt(ctxt); + return(NULL); + } + ctxt->myDoc->properties = XML_DOC_INTERNAL; + ctxt->myDoc->extSubset = xmlNewDtd(ctxt->myDoc, BAD_CAST "none", + ExternalID, SystemID); + xmlParseExternalSubset(ctxt, ExternalID, SystemID); + + if (ctxt->myDoc != NULL) { + if (ctxt->wellFormed) { + ret = ctxt->myDoc->extSubset; + ctxt->myDoc->extSubset = NULL; + if (ret != NULL) { + xmlNodePtr tmp; + + ret->doc = NULL; + tmp = ret->children; + while (tmp != NULL) { + tmp->doc = NULL; + tmp = tmp->next; + } + } + } else { + ret = NULL; + } + xmlFreeDoc(ctxt->myDoc); + ctxt->myDoc = NULL; + } + if (sax != NULL) ctxt->sax = NULL; + xmlFreeParserCtxt(ctxt); + + return(ret); +} + + +/** + * xmlParseDTD: + * @ExternalID: a NAME* containing the External ID of the DTD + * @SystemID: a NAME* containing the URL to the DTD + * + * Load and parse an external subset. + * + * Returns the resulting xmlDtdPtr or NULL in case of error. + */ + +xmlDtdPtr +xmlParseDTD(const xmlChar *ExternalID, const xmlChar *SystemID) { + return(xmlSAXParseDTD(NULL, ExternalID, SystemID)); +} +#endif /* LIBXML_VALID_ENABLED */ + +/************************************************************************ + * * + * Front ends when parsing an Entity * + * * + ************************************************************************/ + +/** + * xmlParseCtxtExternalEntity: + * @ctx: the existing parsing context + * @URL: the URL for the entity to load + * @ID: the System ID for the entity to load + * @lst: the return value for the set of parsed nodes + * + * Parse an external general entity within an existing parsing context + * An external general parsed entity is well-formed if it matches the + * production labeled extParsedEnt. + * + * [78] extParsedEnt ::= TextDecl? content + * + * Returns 0 if the entity is well formed, -1 in case of args problem and + * the parser error code otherwise + */ + +int +xmlParseCtxtExternalEntity(xmlParserCtxtPtr ctx, const xmlChar *URL, + const xmlChar *ID, xmlNodePtr *lst) { + xmlParserCtxtPtr ctxt; + xmlDocPtr newDoc; + xmlNodePtr newRoot; + xmlSAXHandlerPtr oldsax = NULL; + int ret = 0; + xmlChar start[4]; + xmlCharEncoding enc; + + if (ctx == NULL) return(-1); + + if (((ctx->depth > 40) && ((ctx->options & XML_PARSE_HUGE) == 0)) || + (ctx->depth > 1024)) { + return(XML_ERR_ENTITY_LOOP); + } + + if (lst != NULL) + *lst = NULL; + if ((URL == NULL) && (ID == NULL)) + return(-1); + if (ctx->myDoc == NULL) /* @@ relax but check for dereferences */ + return(-1); + + ctxt = xmlCreateEntityParserCtxtInternal(URL, ID, NULL, ctx); + if (ctxt == NULL) { + return(-1); + } + + oldsax = ctxt->sax; + ctxt->sax = ctx->sax; + xmlDetectSAX2(ctxt); + newDoc = xmlNewDoc(BAD_CAST "1.0"); + if (newDoc == NULL) { + xmlFreeParserCtxt(ctxt); + return(-1); + } + newDoc->properties = XML_DOC_INTERNAL; + if (ctx->myDoc->dict) { + newDoc->dict = ctx->myDoc->dict; + xmlDictReference(newDoc->dict); + } + if (ctx->myDoc != NULL) { + newDoc->intSubset = ctx->myDoc->intSubset; + newDoc->extSubset = ctx->myDoc->extSubset; + } + if (ctx->myDoc->URL != NULL) { + newDoc->URL = xmlStrdup(ctx->myDoc->URL); + } + newRoot = xmlNewDocNode(newDoc, NULL, BAD_CAST "pseudoroot", NULL); + if (newRoot == NULL) { + ctxt->sax = oldsax; + xmlFreeParserCtxt(ctxt); + newDoc->intSubset = NULL; + newDoc->extSubset = NULL; + xmlFreeDoc(newDoc); + return(-1); + } + xmlAddChild((xmlNodePtr) newDoc, newRoot); + nodePush(ctxt, newDoc->children); + if (ctx->myDoc == NULL) { + ctxt->myDoc = newDoc; + } else { + ctxt->myDoc = ctx->myDoc; + newDoc->children->doc = ctx->myDoc; + } + + /* + * Get the 4 first bytes and decode the charset + * if enc != XML_CHAR_ENCODING_NONE + * plug some encoding conversion routines. + */ + GROW + if ((ctxt->input->end - ctxt->input->cur) >= 4) { + start[0] = RAW; + start[1] = NXT(1); + start[2] = NXT(2); + start[3] = NXT(3); + enc = xmlDetectCharEncoding(start, 4); + if (enc != XML_CHAR_ENCODING_NONE) { + xmlSwitchEncoding(ctxt, enc); + } + } + + /* + * Parse a possible text declaration first + */ + if ((CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) && (IS_BLANK_CH(NXT(5)))) { + xmlParseTextDecl(ctxt); + /* + * An XML-1.0 document can't reference an entity not XML-1.0 + */ + if ((xmlStrEqual(ctx->version, BAD_CAST "1.0")) && + (!xmlStrEqual(ctxt->input->version, BAD_CAST "1.0"))) { + xmlFatalErrMsg(ctxt, XML_ERR_VERSION_MISMATCH, + "Version mismatch between document and entity\n"); + } + } + + /* + * If the user provided its own SAX callbacks then reuse the + * useData callback field, otherwise the expected setup in a + * DOM builder is to have userData == ctxt + */ + if (ctx->userData == ctx) + ctxt->userData = ctxt; + else + ctxt->userData = ctx->userData; + + /* + * Doing validity checking on chunk doesn't make sense + */ + ctxt->instate = XML_PARSER_CONTENT; + ctxt->validate = ctx->validate; + ctxt->valid = ctx->valid; + ctxt->loadsubset = ctx->loadsubset; + ctxt->depth = ctx->depth + 1; + ctxt->replaceEntities = ctx->replaceEntities; + if (ctxt->validate) { + ctxt->vctxt.error = ctx->vctxt.error; + ctxt->vctxt.warning = ctx->vctxt.warning; + } else { + ctxt->vctxt.error = NULL; + ctxt->vctxt.warning = NULL; + } + ctxt->vctxt.nodeTab = NULL; + ctxt->vctxt.nodeNr = 0; + ctxt->vctxt.nodeMax = 0; + ctxt->vctxt.node = NULL; + if (ctxt->dict != NULL) xmlDictFree(ctxt->dict); + ctxt->dict = ctx->dict; + ctxt->str_xml = xmlDictLookup(ctxt->dict, BAD_CAST "xml", 3); + ctxt->str_xmlns = xmlDictLookup(ctxt->dict, BAD_CAST "xmlns", 5); + ctxt->str_xml_ns = xmlDictLookup(ctxt->dict, XML_XML_NAMESPACE, 36); + ctxt->dictNames = ctx->dictNames; + ctxt->attsDefault = ctx->attsDefault; + ctxt->attsSpecial = ctx->attsSpecial; + ctxt->linenumbers = ctx->linenumbers; + + xmlParseContent(ctxt); + + ctx->validate = ctxt->validate; + ctx->valid = ctxt->valid; + if ((RAW == '<') && (NXT(1) == '/')) { + xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL); + } else if (RAW != 0) { + xmlFatalErr(ctxt, XML_ERR_EXTRA_CONTENT, NULL); + } + if (ctxt->node != newDoc->children) { + xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL); + } + + if (!ctxt->wellFormed) { + if (ctxt->errNo == 0) + ret = 1; + else + ret = ctxt->errNo; + } else { + if (lst != NULL) { + xmlNodePtr cur; + + /* + * Return the newly created nodeset after unlinking it from + * they pseudo parent. + */ + cur = newDoc->children->children; + *lst = cur; + while (cur != NULL) { + cur->parent = NULL; + cur = cur->next; + } + newDoc->children->children = NULL; + } + ret = 0; + } + ctxt->sax = oldsax; + ctxt->dict = NULL; + ctxt->attsDefault = NULL; + ctxt->attsSpecial = NULL; + xmlFreeParserCtxt(ctxt); + newDoc->intSubset = NULL; + newDoc->extSubset = NULL; + xmlFreeDoc(newDoc); + + return(ret); +} + +/** + * xmlParseExternalEntityPrivate: + * @doc: the document the chunk pertains to + * @oldctxt: the previous parser context if available + * @sax: the SAX handler bloc (possibly NULL) + * @user_data: The user data returned on SAX callbacks (possibly NULL) + * @depth: Used for loop detection, use 0 + * @URL: the URL for the entity to load + * @ID: the System ID for the entity to load + * @list: the return value for the set of parsed nodes + * + * Private version of xmlParseExternalEntity() + * + * Returns 0 if the entity is well formed, -1 in case of args problem and + * the parser error code otherwise + */ + +static xmlParserErrors +xmlParseExternalEntityPrivate(xmlDocPtr doc, xmlParserCtxtPtr oldctxt, + xmlSAXHandlerPtr sax, + void *user_data, int depth, const xmlChar *URL, + const xmlChar *ID, xmlNodePtr *list) { + xmlParserCtxtPtr ctxt; + xmlDocPtr newDoc; + xmlNodePtr newRoot; + xmlSAXHandlerPtr oldsax = NULL; + xmlParserErrors ret = XML_ERR_OK; + xmlChar start[4]; + xmlCharEncoding enc; + + if (((depth > 40) && + ((oldctxt == NULL) || (oldctxt->options & XML_PARSE_HUGE) == 0)) || + (depth > 1024)) { + return(XML_ERR_ENTITY_LOOP); + } + + if (list != NULL) + *list = NULL; + if ((URL == NULL) && (ID == NULL)) + return(XML_ERR_INTERNAL_ERROR); + if (doc == NULL) + return(XML_ERR_INTERNAL_ERROR); + + + ctxt = xmlCreateEntityParserCtxtInternal(URL, ID, NULL, oldctxt); + if (ctxt == NULL) return(XML_WAR_UNDECLARED_ENTITY); + ctxt->userData = ctxt; + if (oldctxt != NULL) { + ctxt->_private = oldctxt->_private; + ctxt->loadsubset = oldctxt->loadsubset; + ctxt->validate = oldctxt->validate; + ctxt->external = oldctxt->external; + ctxt->record_info = oldctxt->record_info; + ctxt->node_seq.maximum = oldctxt->node_seq.maximum; + ctxt->node_seq.length = oldctxt->node_seq.length; + ctxt->node_seq.buffer = oldctxt->node_seq.buffer; + } else { + /* + * Doing validity checking on chunk without context + * doesn't make sense + */ + ctxt->_private = NULL; + ctxt->validate = 0; + ctxt->external = 2; + ctxt->loadsubset = 0; + } + if (sax != NULL) { + oldsax = ctxt->sax; + ctxt->sax = sax; + if (user_data != NULL) + ctxt->userData = user_data; + } + xmlDetectSAX2(ctxt); + newDoc = xmlNewDoc(BAD_CAST "1.0"); + if (newDoc == NULL) { + ctxt->node_seq.maximum = 0; + ctxt->node_seq.length = 0; + ctxt->node_seq.buffer = NULL; + xmlFreeParserCtxt(ctxt); + return(XML_ERR_INTERNAL_ERROR); + } + newDoc->properties = XML_DOC_INTERNAL; + newDoc->intSubset = doc->intSubset; + newDoc->extSubset = doc->extSubset; + newDoc->dict = doc->dict; + xmlDictReference(newDoc->dict); + + if (doc->URL != NULL) { + newDoc->URL = xmlStrdup(doc->URL); + } + newRoot = xmlNewDocNode(newDoc, NULL, BAD_CAST "pseudoroot", NULL); + if (newRoot == NULL) { + if (sax != NULL) + ctxt->sax = oldsax; + ctxt->node_seq.maximum = 0; + ctxt->node_seq.length = 0; + ctxt->node_seq.buffer = NULL; + xmlFreeParserCtxt(ctxt); + newDoc->intSubset = NULL; + newDoc->extSubset = NULL; + xmlFreeDoc(newDoc); + return(XML_ERR_INTERNAL_ERROR); + } + xmlAddChild((xmlNodePtr) newDoc, newRoot); + nodePush(ctxt, newDoc->children); + ctxt->myDoc = doc; + newRoot->doc = doc; + + /* + * Get the 4 first bytes and decode the charset + * if enc != XML_CHAR_ENCODING_NONE + * plug some encoding conversion routines. + */ + GROW; + if ((ctxt->input->end - ctxt->input->cur) >= 4) { + start[0] = RAW; + start[1] = NXT(1); + start[2] = NXT(2); + start[3] = NXT(3); + enc = xmlDetectCharEncoding(start, 4); + if (enc != XML_CHAR_ENCODING_NONE) { + xmlSwitchEncoding(ctxt, enc); + } + } + + /* + * Parse a possible text declaration first + */ + if ((CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) && (IS_BLANK_CH(NXT(5)))) { + xmlParseTextDecl(ctxt); + } + + ctxt->instate = XML_PARSER_CONTENT; + ctxt->depth = depth; + + xmlParseContent(ctxt); + + if ((RAW == '<') && (NXT(1) == '/')) { + xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL); + } else if (RAW != 0) { + xmlFatalErr(ctxt, XML_ERR_EXTRA_CONTENT, NULL); + } + if (ctxt->node != newDoc->children) { + xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL); + } + + if (!ctxt->wellFormed) { + if (ctxt->errNo == 0) + ret = XML_ERR_INTERNAL_ERROR; + else + ret = (xmlParserErrors)ctxt->errNo; + } else { + if (list != NULL) { + xmlNodePtr cur; + + /* + * Return the newly created nodeset after unlinking it from + * they pseudo parent. + */ + cur = newDoc->children->children; + *list = cur; + while (cur != NULL) { + cur->parent = NULL; + cur = cur->next; + } + newDoc->children->children = NULL; + } + ret = XML_ERR_OK; + } + + /* + * Record in the parent context the number of entities replacement + * done when parsing that reference. + */ + if (oldctxt != NULL) + oldctxt->nbentities += ctxt->nbentities; + + /* + * Also record the size of the entity parsed + */ + if (ctxt->input != NULL && oldctxt != NULL) { + oldctxt->sizeentities += ctxt->input->consumed; + oldctxt->sizeentities += (ctxt->input->cur - ctxt->input->base); + } + /* + * And record the last error if any + */ + if ((oldctxt != NULL) && (ctxt->lastError.code != XML_ERR_OK)) + xmlCopyError(&ctxt->lastError, &oldctxt->lastError); + + if (sax != NULL) + ctxt->sax = oldsax; + if (oldctxt != NULL) { + oldctxt->node_seq.maximum = ctxt->node_seq.maximum; + oldctxt->node_seq.length = ctxt->node_seq.length; + oldctxt->node_seq.buffer = ctxt->node_seq.buffer; + } + ctxt->node_seq.maximum = 0; + ctxt->node_seq.length = 0; + ctxt->node_seq.buffer = NULL; + xmlFreeParserCtxt(ctxt); + newDoc->intSubset = NULL; + newDoc->extSubset = NULL; + xmlFreeDoc(newDoc); + + return(ret); +} + +#ifdef LIBXML_SAX1_ENABLED +/** + * xmlParseExternalEntity: + * @doc: the document the chunk pertains to + * @sax: the SAX handler bloc (possibly NULL) + * @user_data: The user data returned on SAX callbacks (possibly NULL) + * @depth: Used for loop detection, use 0 + * @URL: the URL for the entity to load + * @ID: the System ID for the entity to load + * @lst: the return value for the set of parsed nodes + * + * Parse an external general entity + * An external general parsed entity is well-formed if it matches the + * production labeled extParsedEnt. + * + * [78] extParsedEnt ::= TextDecl? content + * + * Returns 0 if the entity is well formed, -1 in case of args problem and + * the parser error code otherwise + */ + +int +xmlParseExternalEntity(xmlDocPtr doc, xmlSAXHandlerPtr sax, void *user_data, + int depth, const xmlChar *URL, const xmlChar *ID, xmlNodePtr *lst) { + return(xmlParseExternalEntityPrivate(doc, NULL, sax, user_data, depth, URL, + ID, lst)); +} + +/** + * xmlParseBalancedChunkMemory: + * @doc: the document the chunk pertains to + * @sax: the SAX handler bloc (possibly NULL) + * @user_data: The user data returned on SAX callbacks (possibly NULL) + * @depth: Used for loop detection, use 0 + * @string: the input string in UTF8 or ISO-Latin (zero terminated) + * @lst: the return value for the set of parsed nodes + * + * Parse a well-balanced chunk of an XML document + * called by the parser + * The allowed sequence for the Well Balanced Chunk is the one defined by + * the content production in the XML grammar: + * + * [43] content ::= (element | CharData | Reference | CDSect | PI | Comment)* + * + * Returns 0 if the chunk is well balanced, -1 in case of args problem and + * the parser error code otherwise + */ + +int +xmlParseBalancedChunkMemory(xmlDocPtr doc, xmlSAXHandlerPtr sax, + void *user_data, int depth, const xmlChar *string, xmlNodePtr *lst) { + return xmlParseBalancedChunkMemoryRecover( doc, sax, user_data, + depth, string, lst, 0 ); +} +#endif /* LIBXML_SAX1_ENABLED */ + +/** + * xmlParseBalancedChunkMemoryInternal: + * @oldctxt: the existing parsing context + * @string: the input string in UTF8 or ISO-Latin (zero terminated) + * @user_data: the user data field for the parser context + * @lst: the return value for the set of parsed nodes + * + * + * Parse a well-balanced chunk of an XML document + * called by the parser + * The allowed sequence for the Well Balanced Chunk is the one defined by + * the content production in the XML grammar: + * + * [43] content ::= (element | CharData | Reference | CDSect | PI | Comment)* + * + * Returns XML_ERR_OK if the chunk is well balanced, and the parser + * error code otherwise + * + * In case recover is set to 1, the nodelist will not be empty even if + * the parsed chunk is not well balanced. + */ +static xmlParserErrors +xmlParseBalancedChunkMemoryInternal(xmlParserCtxtPtr oldctxt, + const xmlChar *string, void *user_data, xmlNodePtr *lst) { + xmlParserCtxtPtr ctxt; + xmlDocPtr newDoc = NULL; + xmlNodePtr newRoot; + xmlSAXHandlerPtr oldsax = NULL; + xmlNodePtr content = NULL; + xmlNodePtr last = NULL; + int size; + xmlParserErrors ret = XML_ERR_OK; +#ifdef SAX2 + int i; +#endif + + if (((oldctxt->depth > 40) && ((oldctxt->options & XML_PARSE_HUGE) == 0)) || + (oldctxt->depth > 1024)) { + return(XML_ERR_ENTITY_LOOP); + } + + + if (lst != NULL) + *lst = NULL; + if (string == NULL) + return(XML_ERR_INTERNAL_ERROR); + + size = xmlStrlen(string); + + ctxt = xmlCreateMemoryParserCtxt((char *) string, size); + if (ctxt == NULL) return(XML_WAR_UNDECLARED_ENTITY); + if (user_data != NULL) + ctxt->userData = user_data; + else + ctxt->userData = ctxt; + if (ctxt->dict != NULL) xmlDictFree(ctxt->dict); + ctxt->dict = oldctxt->dict; + ctxt->input_id = oldctxt->input_id + 1; + ctxt->str_xml = xmlDictLookup(ctxt->dict, BAD_CAST "xml", 3); + ctxt->str_xmlns = xmlDictLookup(ctxt->dict, BAD_CAST "xmlns", 5); + ctxt->str_xml_ns = xmlDictLookup(ctxt->dict, XML_XML_NAMESPACE, 36); + +#ifdef SAX2 + /* propagate namespaces down the entity */ + for (i = 0;i < oldctxt->nsNr;i += 2) { + nsPush(ctxt, oldctxt->nsTab[i], oldctxt->nsTab[i+1]); + } +#endif + + oldsax = ctxt->sax; + ctxt->sax = oldctxt->sax; + xmlDetectSAX2(ctxt); + ctxt->replaceEntities = oldctxt->replaceEntities; + ctxt->options = oldctxt->options; + + ctxt->_private = oldctxt->_private; + if (oldctxt->myDoc == NULL) { + newDoc = xmlNewDoc(BAD_CAST "1.0"); + if (newDoc == NULL) { + ctxt->sax = oldsax; + ctxt->dict = NULL; + xmlFreeParserCtxt(ctxt); + return(XML_ERR_INTERNAL_ERROR); + } + newDoc->properties = XML_DOC_INTERNAL; + newDoc->dict = ctxt->dict; + xmlDictReference(newDoc->dict); + ctxt->myDoc = newDoc; + } else { + ctxt->myDoc = oldctxt->myDoc; + content = ctxt->myDoc->children; + last = ctxt->myDoc->last; + } + newRoot = xmlNewDocNode(ctxt->myDoc, NULL, BAD_CAST "pseudoroot", NULL); + if (newRoot == NULL) { + ctxt->sax = oldsax; + ctxt->dict = NULL; + xmlFreeParserCtxt(ctxt); + if (newDoc != NULL) { + xmlFreeDoc(newDoc); + } + return(XML_ERR_INTERNAL_ERROR); + } + ctxt->myDoc->children = NULL; + ctxt->myDoc->last = NULL; + xmlAddChild((xmlNodePtr) ctxt->myDoc, newRoot); + nodePush(ctxt, ctxt->myDoc->children); + ctxt->instate = XML_PARSER_CONTENT; + ctxt->depth = oldctxt->depth + 1; + + ctxt->validate = 0; + ctxt->loadsubset = oldctxt->loadsubset; + if ((oldctxt->validate) || (oldctxt->replaceEntities != 0)) { + /* + * ID/IDREF registration will be done in xmlValidateElement below + */ + ctxt->loadsubset |= XML_SKIP_IDS; + } + ctxt->dictNames = oldctxt->dictNames; + ctxt->attsDefault = oldctxt->attsDefault; + ctxt->attsSpecial = oldctxt->attsSpecial; + + xmlParseContent(ctxt); + if ((RAW == '<') && (NXT(1) == '/')) { + xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL); + } else if (RAW != 0) { + xmlFatalErr(ctxt, XML_ERR_EXTRA_CONTENT, NULL); + } + if (ctxt->node != ctxt->myDoc->children) { + xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL); + } + + if (!ctxt->wellFormed) { + if (ctxt->errNo == 0) + ret = XML_ERR_INTERNAL_ERROR; + else + ret = (xmlParserErrors)ctxt->errNo; + } else { + ret = XML_ERR_OK; + } + + if ((lst != NULL) && (ret == XML_ERR_OK)) { + xmlNodePtr cur; + + /* + * Return the newly created nodeset after unlinking it from + * they pseudo parent. + */ + cur = ctxt->myDoc->children->children; + *lst = cur; + while (cur != NULL) { +#ifdef LIBXML_VALID_ENABLED + if ((oldctxt->validate) && (oldctxt->wellFormed) && + (oldctxt->myDoc) && (oldctxt->myDoc->intSubset) && + (cur->type == XML_ELEMENT_NODE)) { + oldctxt->valid &= xmlValidateElement(&oldctxt->vctxt, + oldctxt->myDoc, cur); + } +#endif /* LIBXML_VALID_ENABLED */ + cur->parent = NULL; + cur = cur->next; + } + ctxt->myDoc->children->children = NULL; + } + if (ctxt->myDoc != NULL) { + xmlFreeNode(ctxt->myDoc->children); + ctxt->myDoc->children = content; + ctxt->myDoc->last = last; + } + + /* + * Record in the parent context the number of entities replacement + * done when parsing that reference. + */ + if (oldctxt != NULL) + oldctxt->nbentities += ctxt->nbentities; + + /* + * Also record the last error if any + */ + if (ctxt->lastError.code != XML_ERR_OK) + xmlCopyError(&ctxt->lastError, &oldctxt->lastError); + + ctxt->sax = oldsax; + ctxt->dict = NULL; + ctxt->attsDefault = NULL; + ctxt->attsSpecial = NULL; + xmlFreeParserCtxt(ctxt); + if (newDoc != NULL) { + xmlFreeDoc(newDoc); + } + + return(ret); +} + +/** + * xmlParseInNodeContext: + * @node: the context node + * @data: the input string + * @datalen: the input string length in bytes + * @options: a combination of xmlParserOption + * @lst: the return value for the set of parsed nodes + * + * Parse a well-balanced chunk of an XML document + * within the context (DTD, namespaces, etc ...) of the given node. + * + * The allowed sequence for the data is a Well Balanced Chunk defined by + * the content production in the XML grammar: + * + * [43] content ::= (element | CharData | Reference | CDSect | PI | Comment)* + * + * Returns XML_ERR_OK if the chunk is well balanced, and the parser + * error code otherwise + */ +xmlParserErrors +xmlParseInNodeContext(xmlNodePtr node, const char *data, int datalen, + int options, xmlNodePtr *lst) { +#ifdef SAX2 + xmlParserCtxtPtr ctxt; + xmlDocPtr doc = NULL; + xmlNodePtr fake, cur; + int nsnr = 0; + + xmlParserErrors ret = XML_ERR_OK; + + /* + * check all input parameters, grab the document + */ + if ((lst == NULL) || (node == NULL) || (data == NULL) || (datalen < 0)) + return(XML_ERR_INTERNAL_ERROR); + switch (node->type) { + case XML_ELEMENT_NODE: + case XML_ATTRIBUTE_NODE: + case XML_TEXT_NODE: + case XML_CDATA_SECTION_NODE: + case XML_ENTITY_REF_NODE: + case XML_PI_NODE: + case XML_COMMENT_NODE: + case XML_DOCUMENT_NODE: + case XML_HTML_DOCUMENT_NODE: + break; + default: + return(XML_ERR_INTERNAL_ERROR); + + } + while ((node != NULL) && (node->type != XML_ELEMENT_NODE) && + (node->type != XML_DOCUMENT_NODE) && + (node->type != XML_HTML_DOCUMENT_NODE)) + node = node->parent; + if (node == NULL) + return(XML_ERR_INTERNAL_ERROR); + if (node->type == XML_ELEMENT_NODE) + doc = node->doc; + else + doc = (xmlDocPtr) node; + if (doc == NULL) + return(XML_ERR_INTERNAL_ERROR); + + /* + * allocate a context and set-up everything not related to the + * node position in the tree + */ + if (doc->type == XML_DOCUMENT_NODE) + ctxt = xmlCreateMemoryParserCtxt((char *) data, datalen); +#ifdef LIBXML_HTML_ENABLED + else if (doc->type == XML_HTML_DOCUMENT_NODE) { + ctxt = htmlCreateMemoryParserCtxt((char *) data, datalen); + /* + * When parsing in context, it makes no sense to add implied + * elements like html/body/etc... + */ + options |= HTML_PARSE_NOIMPLIED; + } +#endif + else + return(XML_ERR_INTERNAL_ERROR); + + if (ctxt == NULL) + return(XML_ERR_NO_MEMORY); + + /* + * Use input doc's dict if present, else assure XML_PARSE_NODICT is set. + * We need a dictionary for xmlDetectSAX2, so if there's no doc dict + * we must wait until the last moment to free the original one. + */ + if (doc->dict != NULL) { + if (ctxt->dict != NULL) + xmlDictFree(ctxt->dict); + ctxt->dict = doc->dict; + } else + options |= XML_PARSE_NODICT; + + if (doc->encoding != NULL) { + xmlCharEncodingHandlerPtr hdlr; + + if (ctxt->encoding != NULL) + xmlFree((xmlChar *) ctxt->encoding); + ctxt->encoding = xmlStrdup((const xmlChar *) doc->encoding); + + hdlr = xmlFindCharEncodingHandler((const char *) doc->encoding); + if (hdlr != NULL) { + xmlSwitchToEncoding(ctxt, hdlr); + } else { + return(XML_ERR_UNSUPPORTED_ENCODING); + } + } + + xmlCtxtUseOptionsInternal(ctxt, options, NULL); + xmlDetectSAX2(ctxt); + ctxt->myDoc = doc; + /* parsing in context, i.e. as within existing content */ + ctxt->input_id = 2; + ctxt->instate = XML_PARSER_CONTENT; + + fake = xmlNewComment(NULL); + if (fake == NULL) { + xmlFreeParserCtxt(ctxt); + return(XML_ERR_NO_MEMORY); + } + xmlAddChild(node, fake); + + if (node->type == XML_ELEMENT_NODE) { + nodePush(ctxt, node); + /* + * initialize the SAX2 namespaces stack + */ + cur = node; + while ((cur != NULL) && (cur->type == XML_ELEMENT_NODE)) { + xmlNsPtr ns = cur->nsDef; + const xmlChar *iprefix, *ihref; + + while (ns != NULL) { + if (ctxt->dict) { + iprefix = xmlDictLookup(ctxt->dict, ns->prefix, -1); + ihref = xmlDictLookup(ctxt->dict, ns->href, -1); + } else { + iprefix = ns->prefix; + ihref = ns->href; + } + + if (xmlGetNamespace(ctxt, iprefix) == NULL) { + nsPush(ctxt, iprefix, ihref); + nsnr++; + } + ns = ns->next; + } + cur = cur->parent; + } + } + + if ((ctxt->validate) || (ctxt->replaceEntities != 0)) { + /* + * ID/IDREF registration will be done in xmlValidateElement below + */ + ctxt->loadsubset |= XML_SKIP_IDS; + } + +#ifdef LIBXML_HTML_ENABLED + if (doc->type == XML_HTML_DOCUMENT_NODE) + __htmlParseContent(ctxt); + else +#endif + xmlParseContent(ctxt); + + nsPop(ctxt, nsnr); + if ((RAW == '<') && (NXT(1) == '/')) { + xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL); + } else if (RAW != 0) { + xmlFatalErr(ctxt, XML_ERR_EXTRA_CONTENT, NULL); + } + if ((ctxt->node != NULL) && (ctxt->node != node)) { + xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL); + ctxt->wellFormed = 0; + } + + if (!ctxt->wellFormed) { + if (ctxt->errNo == 0) + ret = XML_ERR_INTERNAL_ERROR; + else + ret = (xmlParserErrors)ctxt->errNo; + } else { + ret = XML_ERR_OK; + } + + /* + * Return the newly created nodeset after unlinking it from + * the pseudo sibling. + */ + + cur = fake->next; + fake->next = NULL; + node->last = fake; + + if (cur != NULL) { + cur->prev = NULL; + } + + *lst = cur; + + while (cur != NULL) { + cur->parent = NULL; + cur = cur->next; + } + + xmlUnlinkNode(fake); + xmlFreeNode(fake); + + + if (ret != XML_ERR_OK) { + xmlFreeNodeList(*lst); + *lst = NULL; + } + + if (doc->dict != NULL) + ctxt->dict = NULL; + xmlFreeParserCtxt(ctxt); + + return(ret); +#else /* !SAX2 */ + return(XML_ERR_INTERNAL_ERROR); +#endif +} + +#ifdef LIBXML_SAX1_ENABLED +/** + * xmlParseBalancedChunkMemoryRecover: + * @doc: the document the chunk pertains to + * @sax: the SAX handler bloc (possibly NULL) + * @user_data: The user data returned on SAX callbacks (possibly NULL) + * @depth: Used for loop detection, use 0 + * @string: the input string in UTF8 or ISO-Latin (zero terminated) + * @lst: the return value for the set of parsed nodes + * @recover: return nodes even if the data is broken (use 0) + * + * + * Parse a well-balanced chunk of an XML document + * called by the parser + * The allowed sequence for the Well Balanced Chunk is the one defined by + * the content production in the XML grammar: + * + * [43] content ::= (element | CharData | Reference | CDSect | PI | Comment)* + * + * Returns 0 if the chunk is well balanced, -1 in case of args problem and + * the parser error code otherwise + * + * In case recover is set to 1, the nodelist will not be empty even if + * the parsed chunk is not well balanced, assuming the parsing succeeded to + * some extent. + */ +int +xmlParseBalancedChunkMemoryRecover(xmlDocPtr doc, xmlSAXHandlerPtr sax, + void *user_data, int depth, const xmlChar *string, xmlNodePtr *lst, + int recover) { + xmlParserCtxtPtr ctxt; + xmlDocPtr newDoc; + xmlSAXHandlerPtr oldsax = NULL; + xmlNodePtr content, newRoot; + int size; + int ret = 0; + + if (depth > 40) { + return(XML_ERR_ENTITY_LOOP); + } + + + if (lst != NULL) + *lst = NULL; + if (string == NULL) + return(-1); + + size = xmlStrlen(string); + + ctxt = xmlCreateMemoryParserCtxt((char *) string, size); + if (ctxt == NULL) return(-1); + ctxt->userData = ctxt; + if (sax != NULL) { + oldsax = ctxt->sax; + ctxt->sax = sax; + if (user_data != NULL) + ctxt->userData = user_data; + } + newDoc = xmlNewDoc(BAD_CAST "1.0"); + if (newDoc == NULL) { + xmlFreeParserCtxt(ctxt); + return(-1); + } + newDoc->properties = XML_DOC_INTERNAL; + if ((doc != NULL) && (doc->dict != NULL)) { + xmlDictFree(ctxt->dict); + ctxt->dict = doc->dict; + xmlDictReference(ctxt->dict); + ctxt->str_xml = xmlDictLookup(ctxt->dict, BAD_CAST "xml", 3); + ctxt->str_xmlns = xmlDictLookup(ctxt->dict, BAD_CAST "xmlns", 5); + ctxt->str_xml_ns = xmlDictLookup(ctxt->dict, XML_XML_NAMESPACE, 36); + ctxt->dictNames = 1; + } else { + xmlCtxtUseOptionsInternal(ctxt, XML_PARSE_NODICT, NULL); + } + if (doc != NULL) { + newDoc->intSubset = doc->intSubset; + newDoc->extSubset = doc->extSubset; + } + newRoot = xmlNewDocNode(newDoc, NULL, BAD_CAST "pseudoroot", NULL); + if (newRoot == NULL) { + if (sax != NULL) + ctxt->sax = oldsax; + xmlFreeParserCtxt(ctxt); + newDoc->intSubset = NULL; + newDoc->extSubset = NULL; + xmlFreeDoc(newDoc); + return(-1); + } + xmlAddChild((xmlNodePtr) newDoc, newRoot); + nodePush(ctxt, newRoot); + if (doc == NULL) { + ctxt->myDoc = newDoc; + } else { + ctxt->myDoc = newDoc; + newDoc->children->doc = doc; + /* Ensure that doc has XML spec namespace */ + xmlSearchNsByHref(doc, (xmlNodePtr)doc, XML_XML_NAMESPACE); + newDoc->oldNs = doc->oldNs; + } + ctxt->instate = XML_PARSER_CONTENT; + ctxt->input_id = 2; + ctxt->depth = depth; + + /* + * Doing validity checking on chunk doesn't make sense + */ + ctxt->validate = 0; + ctxt->loadsubset = 0; + xmlDetectSAX2(ctxt); + + if ( doc != NULL ){ + content = doc->children; + doc->children = NULL; + xmlParseContent(ctxt); + doc->children = content; + } + else { + xmlParseContent(ctxt); + } + if ((RAW == '<') && (NXT(1) == '/')) { + xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL); + } else if (RAW != 0) { + xmlFatalErr(ctxt, XML_ERR_EXTRA_CONTENT, NULL); + } + if (ctxt->node != newDoc->children) { + xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL); + } + + if (!ctxt->wellFormed) { + if (ctxt->errNo == 0) + ret = 1; + else + ret = ctxt->errNo; + } else { + ret = 0; + } + + if ((lst != NULL) && ((ret == 0) || (recover == 1))) { + xmlNodePtr cur; + + /* + * Return the newly created nodeset after unlinking it from + * they pseudo parent. + */ + cur = newDoc->children->children; + *lst = cur; + while (cur != NULL) { + xmlSetTreeDoc(cur, doc); + cur->parent = NULL; + cur = cur->next; + } + newDoc->children->children = NULL; + } + + if (sax != NULL) + ctxt->sax = oldsax; + xmlFreeParserCtxt(ctxt); + newDoc->intSubset = NULL; + newDoc->extSubset = NULL; + if(doc != NULL) + newDoc->oldNs = NULL; + xmlFreeDoc(newDoc); + + return(ret); +} + +/** + * xmlSAXParseEntity: + * @sax: the SAX handler block + * @filename: the filename + * + * parse an XML external entity out of context and build a tree. + * It use the given SAX function block to handle the parsing callback. + * If sax is NULL, fallback to the default DOM tree building routines. + * + * [78] extParsedEnt ::= TextDecl? content + * + * This correspond to a "Well Balanced" chunk + * + * Returns the resulting document tree + */ + +xmlDocPtr +xmlSAXParseEntity(xmlSAXHandlerPtr sax, const char *filename) { + xmlDocPtr ret; + xmlParserCtxtPtr ctxt; + + ctxt = xmlCreateFileParserCtxt(filename); + if (ctxt == NULL) { + return(NULL); + } + if (sax != NULL) { + if (ctxt->sax != NULL) + xmlFree(ctxt->sax); + ctxt->sax = sax; + ctxt->userData = NULL; + } + + xmlParseExtParsedEnt(ctxt); + + if (ctxt->wellFormed) + ret = ctxt->myDoc; + else { + ret = NULL; + xmlFreeDoc(ctxt->myDoc); + ctxt->myDoc = NULL; + } + if (sax != NULL) + ctxt->sax = NULL; + xmlFreeParserCtxt(ctxt); + + return(ret); +} + +/** + * xmlParseEntity: + * @filename: the filename + * + * parse an XML external entity out of context and build a tree. + * + * [78] extParsedEnt ::= TextDecl? content + * + * This correspond to a "Well Balanced" chunk + * + * Returns the resulting document tree + */ + +xmlDocPtr +xmlParseEntity(const char *filename) { + return(xmlSAXParseEntity(NULL, filename)); +} +#endif /* LIBXML_SAX1_ENABLED */ + +/** + * xmlCreateEntityParserCtxtInternal: + * @URL: the entity URL + * @ID: the entity PUBLIC ID + * @base: a possible base for the target URI + * @pctx: parser context used to set options on new context + * + * Create a parser context for an external entity + * Automatic support for ZLIB/Compress compressed document is provided + * by default if found at compile-time. + * + * Returns the new parser context or NULL + */ +static xmlParserCtxtPtr +xmlCreateEntityParserCtxtInternal(const xmlChar *URL, const xmlChar *ID, + const xmlChar *base, xmlParserCtxtPtr pctx) { + xmlParserCtxtPtr ctxt; + xmlParserInputPtr inputStream; + char *directory = NULL; + xmlChar *uri; + + ctxt = xmlNewParserCtxt(); + if (ctxt == NULL) { + return(NULL); + } + + if (pctx != NULL) { + ctxt->options = pctx->options; + ctxt->_private = pctx->_private; + /* + * this is a subparser of pctx, so the input_id should be + * incremented to distinguish from main entity + */ + ctxt->input_id = pctx->input_id + 1; + } + + /* Don't read from stdin. */ + if (xmlStrcmp(URL, BAD_CAST "-") == 0) + URL = BAD_CAST "./-"; + + uri = xmlBuildURI(URL, base); + + if (uri == NULL) { + inputStream = xmlLoadExternalEntity((char *)URL, (char *)ID, ctxt); + if (inputStream == NULL) { + xmlFreeParserCtxt(ctxt); + return(NULL); + } + + inputPush(ctxt, inputStream); + + if ((ctxt->directory == NULL) && (directory == NULL)) + directory = xmlParserGetDirectory((char *)URL); + if ((ctxt->directory == NULL) && (directory != NULL)) + ctxt->directory = directory; + } else { + inputStream = xmlLoadExternalEntity((char *)uri, (char *)ID, ctxt); + if (inputStream == NULL) { + xmlFree(uri); + xmlFreeParserCtxt(ctxt); + return(NULL); + } + + inputPush(ctxt, inputStream); + + if ((ctxt->directory == NULL) && (directory == NULL)) + directory = xmlParserGetDirectory((char *)uri); + if ((ctxt->directory == NULL) && (directory != NULL)) + ctxt->directory = directory; + xmlFree(uri); + } + return(ctxt); +} + +/** + * xmlCreateEntityParserCtxt: + * @URL: the entity URL + * @ID: the entity PUBLIC ID + * @base: a possible base for the target URI + * + * Create a parser context for an external entity + * Automatic support for ZLIB/Compress compressed document is provided + * by default if found at compile-time. + * + * Returns the new parser context or NULL + */ +xmlParserCtxtPtr +xmlCreateEntityParserCtxt(const xmlChar *URL, const xmlChar *ID, + const xmlChar *base) { + return xmlCreateEntityParserCtxtInternal(URL, ID, base, NULL); + +} + +/************************************************************************ + * * + * Front ends when parsing from a file * + * * + ************************************************************************/ + +/** + * xmlCreateURLParserCtxt: + * @filename: the filename or URL + * @options: a combination of xmlParserOption + * + * Create a parser context for a file or URL content. + * Automatic support for ZLIB/Compress compressed document is provided + * by default if found at compile-time and for file accesses + * + * Returns the new parser context or NULL + */ +xmlParserCtxtPtr +xmlCreateURLParserCtxt(const char *filename, int options) +{ + xmlParserCtxtPtr ctxt; + xmlParserInputPtr inputStream; + char *directory = NULL; + + ctxt = xmlNewParserCtxt(); + if (ctxt == NULL) { + xmlErrMemory(NULL, "cannot allocate parser context"); + return(NULL); + } + + if (options) + xmlCtxtUseOptionsInternal(ctxt, options, NULL); + ctxt->linenumbers = 1; + + inputStream = xmlLoadExternalEntity(filename, NULL, ctxt); + if (inputStream == NULL) { + xmlFreeParserCtxt(ctxt); + return(NULL); + } + + inputPush(ctxt, inputStream); + if ((ctxt->directory == NULL) && (directory == NULL)) + directory = xmlParserGetDirectory(filename); + if ((ctxt->directory == NULL) && (directory != NULL)) + ctxt->directory = directory; + + return(ctxt); +} + +/** + * xmlCreateFileParserCtxt: + * @filename: the filename + * + * Create a parser context for a file content. + * Automatic support for ZLIB/Compress compressed document is provided + * by default if found at compile-time. + * + * Returns the new parser context or NULL + */ +xmlParserCtxtPtr +xmlCreateFileParserCtxt(const char *filename) +{ + return(xmlCreateURLParserCtxt(filename, 0)); +} + +#ifdef LIBXML_SAX1_ENABLED +/** + * xmlSAXParseFileWithData: + * @sax: the SAX handler block + * @filename: the filename + * @recovery: work in recovery mode, i.e. tries to read no Well Formed + * documents + * @data: the userdata + * + * parse an XML file and build a tree. Automatic support for ZLIB/Compress + * compressed document is provided by default if found at compile-time. + * It use the given SAX function block to handle the parsing callback. + * If sax is NULL, fallback to the default DOM tree building routines. + * + * User data (void *) is stored within the parser context in the + * context's _private member, so it is available nearly everywhere in libxml + * + * Returns the resulting document tree + */ + +xmlDocPtr +xmlSAXParseFileWithData(xmlSAXHandlerPtr sax, const char *filename, + int recovery, void *data) { + xmlDocPtr ret; + xmlParserCtxtPtr ctxt; + + xmlInitParser(); + + ctxt = xmlCreateFileParserCtxt(filename); + if (ctxt == NULL) { + return(NULL); + } + if (sax != NULL) { + if (ctxt->sax != NULL) + xmlFree(ctxt->sax); + ctxt->sax = sax; + } + xmlDetectSAX2(ctxt); + if (data!=NULL) { + ctxt->_private = data; + } + + if (ctxt->directory == NULL) + ctxt->directory = xmlParserGetDirectory(filename); + + ctxt->recovery = recovery; + + xmlParseDocument(ctxt); + + if ((ctxt->wellFormed) || recovery) { + ret = ctxt->myDoc; + if (ret != NULL) { + if (ctxt->input->buf->compressed > 0) + ret->compression = 9; + else + ret->compression = ctxt->input->buf->compressed; + } + } + else { + ret = NULL; + xmlFreeDoc(ctxt->myDoc); + ctxt->myDoc = NULL; + } + if (sax != NULL) + ctxt->sax = NULL; + xmlFreeParserCtxt(ctxt); + + return(ret); +} + +/** + * xmlSAXParseFile: + * @sax: the SAX handler block + * @filename: the filename + * @recovery: work in recovery mode, i.e. tries to read no Well Formed + * documents + * + * parse an XML file and build a tree. Automatic support for ZLIB/Compress + * compressed document is provided by default if found at compile-time. + * It use the given SAX function block to handle the parsing callback. + * If sax is NULL, fallback to the default DOM tree building routines. + * + * Returns the resulting document tree + */ + +xmlDocPtr +xmlSAXParseFile(xmlSAXHandlerPtr sax, const char *filename, + int recovery) { + return(xmlSAXParseFileWithData(sax,filename,recovery,NULL)); +} + +/** + * xmlRecoverDoc: + * @cur: a pointer to an array of xmlChar + * + * parse an XML in-memory document and build a tree. + * In the case the document is not Well Formed, a attempt to build a + * tree is tried anyway + * + * Returns the resulting document tree or NULL in case of failure + */ + +xmlDocPtr +xmlRecoverDoc(const xmlChar *cur) { + return(xmlSAXParseDoc(NULL, cur, 1)); +} + +/** + * xmlParseFile: + * @filename: the filename + * + * parse an XML file and build a tree. Automatic support for ZLIB/Compress + * compressed document is provided by default if found at compile-time. + * + * Returns the resulting document tree if the file was wellformed, + * NULL otherwise. + */ + +xmlDocPtr +xmlParseFile(const char *filename) { + return(xmlSAXParseFile(NULL, filename, 0)); +} + +/** + * xmlRecoverFile: + * @filename: the filename + * + * parse an XML file and build a tree. Automatic support for ZLIB/Compress + * compressed document is provided by default if found at compile-time. + * In the case the document is not Well Formed, it attempts to build + * a tree anyway + * + * Returns the resulting document tree or NULL in case of failure + */ + +xmlDocPtr +xmlRecoverFile(const char *filename) { + return(xmlSAXParseFile(NULL, filename, 1)); +} + + +/** + * xmlSetupParserForBuffer: + * @ctxt: an XML parser context + * @buffer: a xmlChar * buffer + * @filename: a file name + * + * Setup the parser context to parse a new buffer; Clears any prior + * contents from the parser context. The buffer parameter must not be + * NULL, but the filename parameter can be + */ +void +xmlSetupParserForBuffer(xmlParserCtxtPtr ctxt, const xmlChar* buffer, + const char* filename) +{ + xmlParserInputPtr input; + + if ((ctxt == NULL) || (buffer == NULL)) + return; + + input = xmlNewInputStream(ctxt); + if (input == NULL) { + xmlErrMemory(NULL, "parsing new buffer: out of memory\n"); + xmlClearParserCtxt(ctxt); + return; + } + + xmlClearParserCtxt(ctxt); + if (filename != NULL) + input->filename = (char *) xmlCanonicPath((const xmlChar *)filename); + input->base = buffer; + input->cur = buffer; + input->end = &buffer[xmlStrlen(buffer)]; + inputPush(ctxt, input); +} + +/** + * xmlSAXUserParseFile: + * @sax: a SAX handler + * @user_data: The user data returned on SAX callbacks + * @filename: a file name + * + * parse an XML file and call the given SAX handler routines. + * Automatic support for ZLIB/Compress compressed document is provided + * + * Returns 0 in case of success or a error number otherwise + */ +int +xmlSAXUserParseFile(xmlSAXHandlerPtr sax, void *user_data, + const char *filename) { + int ret = 0; + xmlParserCtxtPtr ctxt; + + ctxt = xmlCreateFileParserCtxt(filename); + if (ctxt == NULL) return -1; + if (ctxt->sax != (xmlSAXHandlerPtr) &xmlDefaultSAXHandler) + xmlFree(ctxt->sax); + ctxt->sax = sax; + xmlDetectSAX2(ctxt); + + if (user_data != NULL) + ctxt->userData = user_data; + + xmlParseDocument(ctxt); + + if (ctxt->wellFormed) + ret = 0; + else { + if (ctxt->errNo != 0) + ret = ctxt->errNo; + else + ret = -1; + } + if (sax != NULL) + ctxt->sax = NULL; + if (ctxt->myDoc != NULL) { + xmlFreeDoc(ctxt->myDoc); + ctxt->myDoc = NULL; + } + xmlFreeParserCtxt(ctxt); + + return ret; +} +#endif /* LIBXML_SAX1_ENABLED */ + +/************************************************************************ + * * + * Front ends when parsing from memory * + * * + ************************************************************************/ + +/** + * xmlCreateMemoryParserCtxt: + * @buffer: a pointer to a char array + * @size: the size of the array + * + * Create a parser context for an XML in-memory document. + * + * Returns the new parser context or NULL + */ +xmlParserCtxtPtr +xmlCreateMemoryParserCtxt(const char *buffer, int size) { + xmlParserCtxtPtr ctxt; + xmlParserInputPtr input; + xmlParserInputBufferPtr buf; + + if (buffer == NULL) + return(NULL); + if (size <= 0) + return(NULL); + + ctxt = xmlNewParserCtxt(); + if (ctxt == NULL) + return(NULL); + + /* TODO: xmlParserInputBufferCreateStatic, requires some serious changes */ + buf = xmlParserInputBufferCreateMem(buffer, size, XML_CHAR_ENCODING_NONE); + if (buf == NULL) { + xmlFreeParserCtxt(ctxt); + return(NULL); + } + + input = xmlNewInputStream(ctxt); + if (input == NULL) { + xmlFreeParserInputBuffer(buf); + xmlFreeParserCtxt(ctxt); + return(NULL); + } + + input->filename = NULL; + input->buf = buf; + xmlBufResetInput(input->buf->buffer, input); + + inputPush(ctxt, input); + return(ctxt); +} + +#ifdef LIBXML_SAX1_ENABLED +/** + * xmlSAXParseMemoryWithData: + * @sax: the SAX handler block + * @buffer: an pointer to a char array + * @size: the size of the array + * @recovery: work in recovery mode, i.e. tries to read no Well Formed + * documents + * @data: the userdata + * + * parse an XML in-memory block and use the given SAX function block + * to handle the parsing callback. If sax is NULL, fallback to the default + * DOM tree building routines. + * + * User data (void *) is stored within the parser context in the + * context's _private member, so it is available nearly everywhere in libxml + * + * Returns the resulting document tree + */ + +xmlDocPtr +xmlSAXParseMemoryWithData(xmlSAXHandlerPtr sax, const char *buffer, + int size, int recovery, void *data) { + xmlDocPtr ret; + xmlParserCtxtPtr ctxt; + + xmlInitParser(); + + ctxt = xmlCreateMemoryParserCtxt(buffer, size); + if (ctxt == NULL) return(NULL); + if (sax != NULL) { + if (ctxt->sax != NULL) + xmlFree(ctxt->sax); + ctxt->sax = sax; + } + xmlDetectSAX2(ctxt); + if (data!=NULL) { + ctxt->_private=data; + } + + ctxt->recovery = recovery; + + xmlParseDocument(ctxt); + + if ((ctxt->wellFormed) || recovery) ret = ctxt->myDoc; + else { + ret = NULL; + xmlFreeDoc(ctxt->myDoc); + ctxt->myDoc = NULL; + } + if (sax != NULL) + ctxt->sax = NULL; + xmlFreeParserCtxt(ctxt); + + return(ret); +} + +/** + * xmlSAXParseMemory: + * @sax: the SAX handler block + * @buffer: an pointer to a char array + * @size: the size of the array + * @recovery: work in recovery mode, i.e. tries to read not Well Formed + * documents + * + * parse an XML in-memory block and use the given SAX function block + * to handle the parsing callback. If sax is NULL, fallback to the default + * DOM tree building routines. + * + * Returns the resulting document tree + */ +xmlDocPtr +xmlSAXParseMemory(xmlSAXHandlerPtr sax, const char *buffer, + int size, int recovery) { + return xmlSAXParseMemoryWithData(sax, buffer, size, recovery, NULL); +} + +/** + * xmlParseMemory: + * @buffer: an pointer to a char array + * @size: the size of the array + * + * parse an XML in-memory block and build a tree. + * + * Returns the resulting document tree + */ + +xmlDocPtr xmlParseMemory(const char *buffer, int size) { + return(xmlSAXParseMemory(NULL, buffer, size, 0)); +} + +/** + * xmlRecoverMemory: + * @buffer: an pointer to a char array + * @size: the size of the array + * + * parse an XML in-memory block and build a tree. + * In the case the document is not Well Formed, an attempt to + * build a tree is tried anyway + * + * Returns the resulting document tree or NULL in case of error + */ + +xmlDocPtr xmlRecoverMemory(const char *buffer, int size) { + return(xmlSAXParseMemory(NULL, buffer, size, 1)); +} + +/** + * xmlSAXUserParseMemory: + * @sax: a SAX handler + * @user_data: The user data returned on SAX callbacks + * @buffer: an in-memory XML document input + * @size: the length of the XML document in bytes + * + * A better SAX parsing routine. + * parse an XML in-memory buffer and call the given SAX handler routines. + * + * Returns 0 in case of success or a error number otherwise + */ +int xmlSAXUserParseMemory(xmlSAXHandlerPtr sax, void *user_data, + const char *buffer, int size) { + int ret = 0; + xmlParserCtxtPtr ctxt; + + xmlInitParser(); + + ctxt = xmlCreateMemoryParserCtxt(buffer, size); + if (ctxt == NULL) return -1; + if (ctxt->sax != (xmlSAXHandlerPtr) &xmlDefaultSAXHandler) + xmlFree(ctxt->sax); + ctxt->sax = sax; + xmlDetectSAX2(ctxt); + + if (user_data != NULL) + ctxt->userData = user_data; + + xmlParseDocument(ctxt); + + if (ctxt->wellFormed) + ret = 0; + else { + if (ctxt->errNo != 0) + ret = ctxt->errNo; + else + ret = -1; + } + if (sax != NULL) + ctxt->sax = NULL; + if (ctxt->myDoc != NULL) { + xmlFreeDoc(ctxt->myDoc); + ctxt->myDoc = NULL; + } + xmlFreeParserCtxt(ctxt); + + return ret; +} +#endif /* LIBXML_SAX1_ENABLED */ + +/** + * xmlCreateDocParserCtxt: + * @cur: a pointer to an array of xmlChar + * + * Creates a parser context for an XML in-memory document. + * + * Returns the new parser context or NULL + */ +xmlParserCtxtPtr +xmlCreateDocParserCtxt(const xmlChar *cur) { + int len; + + if (cur == NULL) + return(NULL); + len = xmlStrlen(cur); + return(xmlCreateMemoryParserCtxt((const char *)cur, len)); +} + +#ifdef LIBXML_SAX1_ENABLED +/** + * xmlSAXParseDoc: + * @sax: the SAX handler block + * @cur: a pointer to an array of xmlChar + * @recovery: work in recovery mode, i.e. tries to read no Well Formed + * documents + * + * parse an XML in-memory document and build a tree. + * It use the given SAX function block to handle the parsing callback. + * If sax is NULL, fallback to the default DOM tree building routines. + * + * Returns the resulting document tree + */ + +xmlDocPtr +xmlSAXParseDoc(xmlSAXHandlerPtr sax, const xmlChar *cur, int recovery) { + xmlDocPtr ret; + xmlParserCtxtPtr ctxt; + xmlSAXHandlerPtr oldsax = NULL; + + if (cur == NULL) return(NULL); + + + ctxt = xmlCreateDocParserCtxt(cur); + if (ctxt == NULL) return(NULL); + if (sax != NULL) { + oldsax = ctxt->sax; + ctxt->sax = sax; + ctxt->userData = NULL; + } + xmlDetectSAX2(ctxt); + + xmlParseDocument(ctxt); + if ((ctxt->wellFormed) || recovery) ret = ctxt->myDoc; + else { + ret = NULL; + xmlFreeDoc(ctxt->myDoc); + ctxt->myDoc = NULL; + } + if (sax != NULL) + ctxt->sax = oldsax; + xmlFreeParserCtxt(ctxt); + + return(ret); +} + +/** + * xmlParseDoc: + * @cur: a pointer to an array of xmlChar + * + * parse an XML in-memory document and build a tree. + * + * Returns the resulting document tree + */ + +xmlDocPtr +xmlParseDoc(const xmlChar *cur) { + return(xmlSAXParseDoc(NULL, cur, 0)); +} +#endif /* LIBXML_SAX1_ENABLED */ + +#ifdef LIBXML_LEGACY_ENABLED +/************************************************************************ + * * + * Specific function to keep track of entities references * + * and used by the XSLT debugger * + * * + ************************************************************************/ + +static xmlEntityReferenceFunc xmlEntityRefFunc = NULL; + +/** + * xmlAddEntityReference: + * @ent : A valid entity + * @firstNode : A valid first node for children of entity + * @lastNode : A valid last node of children entity + * + * Notify of a reference to an entity of type XML_EXTERNAL_GENERAL_PARSED_ENTITY + */ +static void +xmlAddEntityReference(xmlEntityPtr ent, xmlNodePtr firstNode, + xmlNodePtr lastNode) +{ + if (xmlEntityRefFunc != NULL) { + (*xmlEntityRefFunc) (ent, firstNode, lastNode); + } +} + + +/** + * xmlSetEntityReferenceFunc: + * @func: A valid function + * + * Set the function to call call back when a xml reference has been made + */ +void +xmlSetEntityReferenceFunc(xmlEntityReferenceFunc func) +{ + xmlEntityRefFunc = func; +} +#endif /* LIBXML_LEGACY_ENABLED */ + +/************************************************************************ + * * + * Miscellaneous * + * * + ************************************************************************/ + +#ifdef LIBXML_XPATH_ENABLED +#include <libxml/xpath.h> +#endif + +extern void XMLCDECL xmlGenericErrorDefaultFunc(void *ctx, const char *msg, ...); +static int xmlParserInitialized = 0; + +/** + * xmlInitParser: + * + * Initialization function for the XML parser. + * This is not reentrant. Call once before processing in case of + * use in multithreaded programs. + */ + +void +xmlInitParser(void) { + if (xmlParserInitialized != 0) + return; + +#ifdef LIBXML_THREAD_ENABLED + __xmlGlobalInitMutexLock(); + if (xmlParserInitialized == 0) { +#endif + xmlInitThreads(); + xmlInitGlobals(); + if ((xmlGenericError == xmlGenericErrorDefaultFunc) || + (xmlGenericError == NULL)) + initGenericErrorDefaultFunc(NULL); + xmlInitMemory(); + xmlInitializeDict(); + xmlInitCharEncodingHandlers(); + xmlDefaultSAXHandlerInit(); + xmlRegisterDefaultInputCallbacks(); +#ifdef LIBXML_OUTPUT_ENABLED + xmlRegisterDefaultOutputCallbacks(); +#endif /* LIBXML_OUTPUT_ENABLED */ +#ifdef LIBXML_HTML_ENABLED + htmlInitAutoClose(); + htmlDefaultSAXHandlerInit(); +#endif +#ifdef LIBXML_XPATH_ENABLED + xmlXPathInit(); +#endif + xmlParserInitialized = 1; +#ifdef LIBXML_THREAD_ENABLED + } + __xmlGlobalInitMutexUnlock(); +#endif +} + +/** + * xmlCleanupParser: + * + * This function name is somewhat misleading. It does not clean up + * parser state, it cleans up memory allocated by the library itself. + * It is a cleanup function for the XML library. It tries to reclaim all + * related global memory allocated for the library processing. + * It doesn't deallocate any document related memory. One should + * call xmlCleanupParser() only when the process has finished using + * the library and all XML/HTML documents built with it. + * See also xmlInitParser() which has the opposite function of preparing + * the library for operations. + * + * WARNING: if your application is multithreaded or has plugin support + * calling this may crash the application if another thread or + * a plugin is still using libxml2. It's sometimes very hard to + * guess if libxml2 is in use in the application, some libraries + * or plugins may use it without notice. In case of doubt abstain + * from calling this function or do it just before calling exit() + * to avoid leak reports from valgrind ! + */ + +void +xmlCleanupParser(void) { + if (!xmlParserInitialized) + return; + + xmlCleanupCharEncodingHandlers(); +#ifdef LIBXML_CATALOG_ENABLED + xmlCatalogCleanup(); +#endif + xmlDictCleanup(); + xmlCleanupInputCallbacks(); +#ifdef LIBXML_OUTPUT_ENABLED + xmlCleanupOutputCallbacks(); +#endif +#ifdef LIBXML_SCHEMAS_ENABLED + xmlSchemaCleanupTypes(); + xmlRelaxNGCleanupTypes(); +#endif + xmlResetLastError(); + xmlCleanupGlobals(); + xmlCleanupThreads(); /* must be last if called not from the main thread */ + xmlCleanupMemory(); + xmlParserInitialized = 0; +} + +/************************************************************************ + * * + * New set (2.6.0) of simpler and more flexible APIs * + * * + ************************************************************************/ + +/** + * DICT_FREE: + * @str: a string + * + * Free a string if it is not owned by the "dict" dictionary in the + * current scope + */ +#define DICT_FREE(str) \ + if ((str) && ((!dict) || \ + (xmlDictOwns(dict, (const xmlChar *)(str)) == 0))) \ + xmlFree((char *)(str)); + +/** + * xmlCtxtReset: + * @ctxt: an XML parser context + * + * Reset a parser context + */ +void +xmlCtxtReset(xmlParserCtxtPtr ctxt) +{ + xmlParserInputPtr input; + xmlDictPtr dict; + + if (ctxt == NULL) + return; + + dict = ctxt->dict; + + while ((input = inputPop(ctxt)) != NULL) { /* Non consuming */ + xmlFreeInputStream(input); + } + ctxt->inputNr = 0; + ctxt->input = NULL; + + ctxt->spaceNr = 0; + if (ctxt->spaceTab != NULL) { + ctxt->spaceTab[0] = -1; + ctxt->space = &ctxt->spaceTab[0]; + } else { + ctxt->space = NULL; + } + + + ctxt->nodeNr = 0; + ctxt->node = NULL; + + ctxt->nameNr = 0; + ctxt->name = NULL; + + DICT_FREE(ctxt->version); + ctxt->version = NULL; + DICT_FREE(ctxt->encoding); + ctxt->encoding = NULL; + DICT_FREE(ctxt->directory); + ctxt->directory = NULL; + DICT_FREE(ctxt->extSubURI); + ctxt->extSubURI = NULL; + DICT_FREE(ctxt->extSubSystem); + ctxt->extSubSystem = NULL; + if (ctxt->myDoc != NULL) + xmlFreeDoc(ctxt->myDoc); + ctxt->myDoc = NULL; + + ctxt->standalone = -1; + ctxt->hasExternalSubset = 0; + ctxt->hasPErefs = 0; + ctxt->html = 0; + ctxt->external = 0; + ctxt->instate = XML_PARSER_START; + ctxt->token = 0; + + ctxt->wellFormed = 1; + ctxt->nsWellFormed = 1; + ctxt->disableSAX = 0; + ctxt->valid = 1; +#if 0 + ctxt->vctxt.userData = ctxt; + ctxt->vctxt.error = xmlParserValidityError; + ctxt->vctxt.warning = xmlParserValidityWarning; +#endif + ctxt->record_info = 0; + ctxt->nbChars = 0; + ctxt->checkIndex = 0; + ctxt->inSubset = 0; + ctxt->errNo = XML_ERR_OK; + ctxt->depth = 0; + ctxt->charset = XML_CHAR_ENCODING_UTF8; + ctxt->catalogs = NULL; + ctxt->nbentities = 0; + ctxt->sizeentities = 0; + ctxt->sizeentcopy = 0; + xmlInitNodeInfoSeq(&ctxt->node_seq); + + if (ctxt->attsDefault != NULL) { + xmlHashFree(ctxt->attsDefault, xmlHashDefaultDeallocator); + ctxt->attsDefault = NULL; + } + if (ctxt->attsSpecial != NULL) { + xmlHashFree(ctxt->attsSpecial, NULL); + ctxt->attsSpecial = NULL; + } + +#ifdef LIBXML_CATALOG_ENABLED + if (ctxt->catalogs != NULL) + xmlCatalogFreeLocal(ctxt->catalogs); +#endif + if (ctxt->lastError.code != XML_ERR_OK) + xmlResetError(&ctxt->lastError); +} + +/** + * xmlCtxtResetPush: + * @ctxt: an XML parser context + * @chunk: a pointer to an array of chars + * @size: number of chars in the array + * @filename: an optional file name or URI + * @encoding: the document encoding, or NULL + * + * Reset a push parser context + * + * Returns 0 in case of success and 1 in case of error + */ +int +xmlCtxtResetPush(xmlParserCtxtPtr ctxt, const char *chunk, + int size, const char *filename, const char *encoding) +{ + xmlParserInputPtr inputStream; + xmlParserInputBufferPtr buf; + xmlCharEncoding enc = XML_CHAR_ENCODING_NONE; + + if (ctxt == NULL) + return(1); + + if ((encoding == NULL) && (chunk != NULL) && (size >= 4)) + enc = xmlDetectCharEncoding((const xmlChar *) chunk, size); + + buf = xmlAllocParserInputBuffer(enc); + if (buf == NULL) + return(1); + + if (ctxt == NULL) { + xmlFreeParserInputBuffer(buf); + return(1); + } + + xmlCtxtReset(ctxt); + + if (filename == NULL) { + ctxt->directory = NULL; + } else { + ctxt->directory = xmlParserGetDirectory(filename); + } + + inputStream = xmlNewInputStream(ctxt); + if (inputStream == NULL) { + xmlFreeParserInputBuffer(buf); + return(1); + } + + if (filename == NULL) + inputStream->filename = NULL; + else + inputStream->filename = (char *) + xmlCanonicPath((const xmlChar *) filename); + inputStream->buf = buf; + xmlBufResetInput(buf->buffer, inputStream); + + inputPush(ctxt, inputStream); + + if ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) && + (ctxt->input->buf != NULL)) { + size_t base = xmlBufGetInputBase(ctxt->input->buf->buffer, ctxt->input); + size_t cur = ctxt->input->cur - ctxt->input->base; + + xmlParserInputBufferPush(ctxt->input->buf, size, chunk); + + xmlBufSetInputBaseCur(ctxt->input->buf->buffer, ctxt->input, base, cur); +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, "PP: pushed %d\n", size); +#endif + } + + if (encoding != NULL) { + xmlCharEncodingHandlerPtr hdlr; + + if (ctxt->encoding != NULL) + xmlFree((xmlChar *) ctxt->encoding); + ctxt->encoding = xmlStrdup((const xmlChar *) encoding); + + hdlr = xmlFindCharEncodingHandler(encoding); + if (hdlr != NULL) { + xmlSwitchToEncoding(ctxt, hdlr); + } else { + xmlFatalErrMsgStr(ctxt, XML_ERR_UNSUPPORTED_ENCODING, + "Unsupported encoding %s\n", BAD_CAST encoding); + } + } else if (enc != XML_CHAR_ENCODING_NONE) { + xmlSwitchEncoding(ctxt, enc); + } + + return(0); +} + + +/** + * xmlCtxtUseOptionsInternal: + * @ctxt: an XML parser context + * @options: a combination of xmlParserOption + * @encoding: the user provided encoding to use + * + * Applies the options to the parser context + * + * Returns 0 in case of success, the set of unknown or unimplemented options + * in case of error. + */ +static int +xmlCtxtUseOptionsInternal(xmlParserCtxtPtr ctxt, int options, const char *encoding) +{ + if (ctxt == NULL) + return(-1); + if (encoding != NULL) { + if (ctxt->encoding != NULL) + xmlFree((xmlChar *) ctxt->encoding); + ctxt->encoding = xmlStrdup((const xmlChar *) encoding); + } + if (options & XML_PARSE_RECOVER) { + ctxt->recovery = 1; + options -= XML_PARSE_RECOVER; + ctxt->options |= XML_PARSE_RECOVER; + } else + ctxt->recovery = 0; + if (options & XML_PARSE_DTDLOAD) { + ctxt->loadsubset = XML_DETECT_IDS; + options -= XML_PARSE_DTDLOAD; + ctxt->options |= XML_PARSE_DTDLOAD; + } else + ctxt->loadsubset = 0; + if (options & XML_PARSE_DTDATTR) { + ctxt->loadsubset |= XML_COMPLETE_ATTRS; + options -= XML_PARSE_DTDATTR; + ctxt->options |= XML_PARSE_DTDATTR; + } + if (options & XML_PARSE_NOENT) { + ctxt->replaceEntities = 1; + /* ctxt->loadsubset |= XML_DETECT_IDS; */ + options -= XML_PARSE_NOENT; + ctxt->options |= XML_PARSE_NOENT; + } else + ctxt->replaceEntities = 0; + if (options & XML_PARSE_PEDANTIC) { + ctxt->pedantic = 1; + options -= XML_PARSE_PEDANTIC; + ctxt->options |= XML_PARSE_PEDANTIC; + } else + ctxt->pedantic = 0; + if (options & XML_PARSE_NOBLANKS) { + ctxt->keepBlanks = 0; + ctxt->sax->ignorableWhitespace = xmlSAX2IgnorableWhitespace; + options -= XML_PARSE_NOBLANKS; + ctxt->options |= XML_PARSE_NOBLANKS; + } else + ctxt->keepBlanks = 1; + if (options & XML_PARSE_DTDVALID) { + ctxt->validate = 1; + if (options & XML_PARSE_NOWARNING) + ctxt->vctxt.warning = NULL; + if (options & XML_PARSE_NOERROR) + ctxt->vctxt.error = NULL; + options -= XML_PARSE_DTDVALID; + ctxt->options |= XML_PARSE_DTDVALID; + } else + ctxt->validate = 0; + if (options & XML_PARSE_NOWARNING) { + ctxt->sax->warning = NULL; + options -= XML_PARSE_NOWARNING; + } + if (options & XML_PARSE_NOERROR) { + ctxt->sax->error = NULL; + ctxt->sax->fatalError = NULL; + options -= XML_PARSE_NOERROR; + } +#ifdef LIBXML_SAX1_ENABLED + if (options & XML_PARSE_SAX1) { + ctxt->sax->startElement = xmlSAX2StartElement; + ctxt->sax->endElement = xmlSAX2EndElement; + ctxt->sax->startElementNs = NULL; + ctxt->sax->endElementNs = NULL; + ctxt->sax->initialized = 1; + options -= XML_PARSE_SAX1; + ctxt->options |= XML_PARSE_SAX1; + } +#endif /* LIBXML_SAX1_ENABLED */ + if (options & XML_PARSE_NODICT) { + ctxt->dictNames = 0; + options -= XML_PARSE_NODICT; + ctxt->options |= XML_PARSE_NODICT; + } else { + ctxt->dictNames = 1; + } + if (options & XML_PARSE_NOCDATA) { + ctxt->sax->cdataBlock = NULL; + options -= XML_PARSE_NOCDATA; + ctxt->options |= XML_PARSE_NOCDATA; + } + if (options & XML_PARSE_NSCLEAN) { + ctxt->options |= XML_PARSE_NSCLEAN; + options -= XML_PARSE_NSCLEAN; + } + if (options & XML_PARSE_NONET) { + ctxt->options |= XML_PARSE_NONET; + options -= XML_PARSE_NONET; + } + if (options & XML_PARSE_COMPACT) { + ctxt->options |= XML_PARSE_COMPACT; + options -= XML_PARSE_COMPACT; + } + if (options & XML_PARSE_OLD10) { + ctxt->options |= XML_PARSE_OLD10; + options -= XML_PARSE_OLD10; + } + if (options & XML_PARSE_NOBASEFIX) { + ctxt->options |= XML_PARSE_NOBASEFIX; + options -= XML_PARSE_NOBASEFIX; + } + if (options & XML_PARSE_HUGE) { + ctxt->options |= XML_PARSE_HUGE; + options -= XML_PARSE_HUGE; + if (ctxt->dict != NULL) + xmlDictSetLimit(ctxt->dict, 0); + } + if (options & XML_PARSE_OLDSAX) { + ctxt->options |= XML_PARSE_OLDSAX; + options -= XML_PARSE_OLDSAX; + } + if (options & XML_PARSE_IGNORE_ENC) { + ctxt->options |= XML_PARSE_IGNORE_ENC; + options -= XML_PARSE_IGNORE_ENC; + } + if (options & XML_PARSE_BIG_LINES) { + ctxt->options |= XML_PARSE_BIG_LINES; + options -= XML_PARSE_BIG_LINES; + } + ctxt->linenumbers = 1; + return (options); +} + +/** + * xmlCtxtUseOptions: + * @ctxt: an XML parser context + * @options: a combination of xmlParserOption + * + * Applies the options to the parser context + * + * Returns 0 in case of success, the set of unknown or unimplemented options + * in case of error. + */ +int +xmlCtxtUseOptions(xmlParserCtxtPtr ctxt, int options) +{ + return(xmlCtxtUseOptionsInternal(ctxt, options, NULL)); +} + +/** + * xmlDoRead: + * @ctxt: an XML parser context + * @URL: the base URL to use for the document + * @encoding: the document encoding, or NULL + * @options: a combination of xmlParserOption + * @reuse: keep the context for reuse + * + * Common front-end for the xmlRead functions + * + * Returns the resulting document tree or NULL + */ +static xmlDocPtr +xmlDoRead(xmlParserCtxtPtr ctxt, const char *URL, const char *encoding, + int options, int reuse) +{ + xmlDocPtr ret; + + xmlCtxtUseOptionsInternal(ctxt, options, encoding); + if (encoding != NULL) { + xmlCharEncodingHandlerPtr hdlr; + + hdlr = xmlFindCharEncodingHandler(encoding); + if (hdlr != NULL) + xmlSwitchToEncoding(ctxt, hdlr); + } + if ((URL != NULL) && (ctxt->input != NULL) && + (ctxt->input->filename == NULL)) + ctxt->input->filename = (char *) xmlStrdup((const xmlChar *) URL); + xmlParseDocument(ctxt); + if ((ctxt->wellFormed) || ctxt->recovery) + ret = ctxt->myDoc; + else { + ret = NULL; + if (ctxt->myDoc != NULL) { + xmlFreeDoc(ctxt->myDoc); + } + } + ctxt->myDoc = NULL; + if (!reuse) { + xmlFreeParserCtxt(ctxt); + } + + return (ret); +} + +/** + * xmlReadDoc: + * @cur: a pointer to a zero terminated string + * @URL: the base URL to use for the document + * @encoding: the document encoding, or NULL + * @options: a combination of xmlParserOption + * + * parse an XML in-memory document and build a tree. + * + * Returns the resulting document tree + */ +xmlDocPtr +xmlReadDoc(const xmlChar * cur, const char *URL, const char *encoding, int options) +{ + xmlParserCtxtPtr ctxt; + + if (cur == NULL) + return (NULL); + xmlInitParser(); + + ctxt = xmlCreateDocParserCtxt(cur); + if (ctxt == NULL) + return (NULL); + return (xmlDoRead(ctxt, URL, encoding, options, 0)); +} + +/** + * xmlReadFile: + * @filename: a file or URL + * @encoding: the document encoding, or NULL + * @options: a combination of xmlParserOption + * + * parse an XML file from the filesystem or the network. + * + * Returns the resulting document tree + */ +xmlDocPtr +xmlReadFile(const char *filename, const char *encoding, int options) +{ + xmlParserCtxtPtr ctxt; + + xmlInitParser(); + ctxt = xmlCreateURLParserCtxt(filename, options); + if (ctxt == NULL) + return (NULL); + return (xmlDoRead(ctxt, NULL, encoding, options, 0)); +} + +/** + * xmlReadMemory: + * @buffer: a pointer to a char array + * @size: the size of the array + * @URL: the base URL to use for the document + * @encoding: the document encoding, or NULL + * @options: a combination of xmlParserOption + * + * parse an XML in-memory document and build a tree. + * + * Returns the resulting document tree + */ +xmlDocPtr +xmlReadMemory(const char *buffer, int size, const char *URL, const char *encoding, int options) +{ + xmlParserCtxtPtr ctxt; + + xmlInitParser(); + ctxt = xmlCreateMemoryParserCtxt(buffer, size); + if (ctxt == NULL) + return (NULL); + return (xmlDoRead(ctxt, URL, encoding, options, 0)); +} + +/** + * xmlReadFd: + * @fd: an open file descriptor + * @URL: the base URL to use for the document + * @encoding: the document encoding, or NULL + * @options: a combination of xmlParserOption + * + * parse an XML from a file descriptor and build a tree. + * NOTE that the file descriptor will not be closed when the + * reader is closed or reset. + * + * Returns the resulting document tree + */ +xmlDocPtr +xmlReadFd(int fd, const char *URL, const char *encoding, int options) +{ + xmlParserCtxtPtr ctxt; + xmlParserInputBufferPtr input; + xmlParserInputPtr stream; + + if (fd < 0) + return (NULL); + xmlInitParser(); + + input = xmlParserInputBufferCreateFd(fd, XML_CHAR_ENCODING_NONE); + if (input == NULL) + return (NULL); + input->closecallback = NULL; + ctxt = xmlNewParserCtxt(); + if (ctxt == NULL) { + xmlFreeParserInputBuffer(input); + return (NULL); + } + stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE); + if (stream == NULL) { + xmlFreeParserInputBuffer(input); + xmlFreeParserCtxt(ctxt); + return (NULL); + } + inputPush(ctxt, stream); + return (xmlDoRead(ctxt, URL, encoding, options, 0)); +} + +/** + * xmlReadIO: + * @ioread: an I/O read function + * @ioclose: an I/O close function + * @ioctx: an I/O handler + * @URL: the base URL to use for the document + * @encoding: the document encoding, or NULL + * @options: a combination of xmlParserOption + * + * parse an XML document from I/O functions and source and build a tree. + * + * Returns the resulting document tree + */ +xmlDocPtr +xmlReadIO(xmlInputReadCallback ioread, xmlInputCloseCallback ioclose, + void *ioctx, const char *URL, const char *encoding, int options) +{ + xmlParserCtxtPtr ctxt; + xmlParserInputBufferPtr input; + xmlParserInputPtr stream; + + if (ioread == NULL) + return (NULL); + xmlInitParser(); + + input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx, + XML_CHAR_ENCODING_NONE); + if (input == NULL) { + if (ioclose != NULL) + ioclose(ioctx); + return (NULL); + } + ctxt = xmlNewParserCtxt(); + if (ctxt == NULL) { + xmlFreeParserInputBuffer(input); + return (NULL); + } + stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE); + if (stream == NULL) { + xmlFreeParserInputBuffer(input); + xmlFreeParserCtxt(ctxt); + return (NULL); + } + inputPush(ctxt, stream); + return (xmlDoRead(ctxt, URL, encoding, options, 0)); +} + +/** + * xmlCtxtReadDoc: + * @ctxt: an XML parser context + * @cur: a pointer to a zero terminated string + * @URL: the base URL to use for the document + * @encoding: the document encoding, or NULL + * @options: a combination of xmlParserOption + * + * parse an XML in-memory document and build a tree. + * This reuses the existing @ctxt parser context + * + * Returns the resulting document tree + */ +xmlDocPtr +xmlCtxtReadDoc(xmlParserCtxtPtr ctxt, const xmlChar * cur, + const char *URL, const char *encoding, int options) +{ + xmlParserInputPtr stream; + + if (cur == NULL) + return (NULL); + if (ctxt == NULL) + return (NULL); + xmlInitParser(); + + xmlCtxtReset(ctxt); + + stream = xmlNewStringInputStream(ctxt, cur); + if (stream == NULL) { + return (NULL); + } + inputPush(ctxt, stream); + return (xmlDoRead(ctxt, URL, encoding, options, 1)); +} + +/** + * xmlCtxtReadFile: + * @ctxt: an XML parser context + * @filename: a file or URL + * @encoding: the document encoding, or NULL + * @options: a combination of xmlParserOption + * + * parse an XML file from the filesystem or the network. + * This reuses the existing @ctxt parser context + * + * Returns the resulting document tree + */ +xmlDocPtr +xmlCtxtReadFile(xmlParserCtxtPtr ctxt, const char *filename, + const char *encoding, int options) +{ + xmlParserInputPtr stream; + + if (filename == NULL) + return (NULL); + if (ctxt == NULL) + return (NULL); + xmlInitParser(); + + xmlCtxtReset(ctxt); + + stream = xmlLoadExternalEntity(filename, NULL, ctxt); + if (stream == NULL) { + return (NULL); + } + inputPush(ctxt, stream); + return (xmlDoRead(ctxt, NULL, encoding, options, 1)); +} + +/** + * xmlCtxtReadMemory: + * @ctxt: an XML parser context + * @buffer: a pointer to a char array + * @size: the size of the array + * @URL: the base URL to use for the document + * @encoding: the document encoding, or NULL + * @options: a combination of xmlParserOption + * + * parse an XML in-memory document and build a tree. + * This reuses the existing @ctxt parser context + * + * Returns the resulting document tree + */ +xmlDocPtr +xmlCtxtReadMemory(xmlParserCtxtPtr ctxt, const char *buffer, int size, + const char *URL, const char *encoding, int options) +{ + xmlParserInputBufferPtr input; + xmlParserInputPtr stream; + + if (ctxt == NULL) + return (NULL); + if (buffer == NULL) + return (NULL); + xmlInitParser(); + + xmlCtxtReset(ctxt); + + input = xmlParserInputBufferCreateMem(buffer, size, XML_CHAR_ENCODING_NONE); + if (input == NULL) { + return(NULL); + } + + stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE); + if (stream == NULL) { + xmlFreeParserInputBuffer(input); + return(NULL); + } + + inputPush(ctxt, stream); + return (xmlDoRead(ctxt, URL, encoding, options, 1)); +} + +/** + * xmlCtxtReadFd: + * @ctxt: an XML parser context + * @fd: an open file descriptor + * @URL: the base URL to use for the document + * @encoding: the document encoding, or NULL + * @options: a combination of xmlParserOption + * + * parse an XML from a file descriptor and build a tree. + * This reuses the existing @ctxt parser context + * NOTE that the file descriptor will not be closed when the + * reader is closed or reset. + * + * Returns the resulting document tree + */ +xmlDocPtr +xmlCtxtReadFd(xmlParserCtxtPtr ctxt, int fd, + const char *URL, const char *encoding, int options) +{ + xmlParserInputBufferPtr input; + xmlParserInputPtr stream; + + if (fd < 0) + return (NULL); + if (ctxt == NULL) + return (NULL); + xmlInitParser(); + + xmlCtxtReset(ctxt); + + + input = xmlParserInputBufferCreateFd(fd, XML_CHAR_ENCODING_NONE); + if (input == NULL) + return (NULL); + input->closecallback = NULL; + stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE); + if (stream == NULL) { + xmlFreeParserInputBuffer(input); + return (NULL); + } + inputPush(ctxt, stream); + return (xmlDoRead(ctxt, URL, encoding, options, 1)); +} + +/** + * xmlCtxtReadIO: + * @ctxt: an XML parser context + * @ioread: an I/O read function + * @ioclose: an I/O close function + * @ioctx: an I/O handler + * @URL: the base URL to use for the document + * @encoding: the document encoding, or NULL + * @options: a combination of xmlParserOption + * + * parse an XML document from I/O functions and source and build a tree. + * This reuses the existing @ctxt parser context + * + * Returns the resulting document tree + */ +xmlDocPtr +xmlCtxtReadIO(xmlParserCtxtPtr ctxt, xmlInputReadCallback ioread, + xmlInputCloseCallback ioclose, void *ioctx, + const char *URL, + const char *encoding, int options) +{ + xmlParserInputBufferPtr input; + xmlParserInputPtr stream; + + if (ioread == NULL) + return (NULL); + if (ctxt == NULL) + return (NULL); + xmlInitParser(); + + xmlCtxtReset(ctxt); + + input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx, + XML_CHAR_ENCODING_NONE); + if (input == NULL) { + if (ioclose != NULL) + ioclose(ioctx); + return (NULL); + } + stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE); + if (stream == NULL) { + xmlFreeParserInputBuffer(input); + return (NULL); + } + inputPush(ctxt, stream); + return (xmlDoRead(ctxt, URL, encoding, options, 1)); +} + +#define bottom_parser +#include "elfgcchack.h" |