diff options
Diffstat (limited to 'openssl-1.1.0h/crypto/x509v3/v3_conf.c')
| -rw-r--r-- | openssl-1.1.0h/crypto/x509v3/v3_conf.c | 511 |
1 files changed, 511 insertions, 0 deletions
diff --git a/openssl-1.1.0h/crypto/x509v3/v3_conf.c b/openssl-1.1.0h/crypto/x509v3/v3_conf.c new file mode 100644 index 0000000..3cc5b14 --- /dev/null +++ b/openssl-1.1.0h/crypto/x509v3/v3_conf.c @@ -0,0 +1,511 @@ +/* + * Copyright 1999-2018 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +/* extension creation utilities */ + +#include <stdio.h> +#include <ctype.h> +#include "internal/cryptlib.h" +#include <openssl/conf.h> +#include <openssl/x509.h> +#include "internal/x509_int.h" +#include <openssl/x509v3.h> + +static int v3_check_critical(const char **value); +static int v3_check_generic(const char **value); +static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid, + int crit, const char *value); +static X509_EXTENSION *v3_generic_extension(const char *ext, const char *value, + int crit, int type, + X509V3_CTX *ctx); +static char *conf_lhash_get_string(void *db, const char *section, const char *value); +static STACK_OF(CONF_VALUE) *conf_lhash_get_section(void *db, const char *section); +static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method, + int ext_nid, int crit, void *ext_struc); +static unsigned char *generic_asn1(const char *value, X509V3_CTX *ctx, + long *ext_len); +/* CONF *conf: Config file */ +/* char *name: Name */ +/* char *value: Value */ +X509_EXTENSION *X509V3_EXT_nconf(CONF *conf, X509V3_CTX *ctx, const char *name, + const char *value) +{ + int crit; + int ext_type; + X509_EXTENSION *ret; + crit = v3_check_critical(&value); + if ((ext_type = v3_check_generic(&value))) + return v3_generic_extension(name, value, crit, ext_type, ctx); + ret = do_ext_nconf(conf, ctx, OBJ_sn2nid(name), crit, value); + if (!ret) { + X509V3err(X509V3_F_X509V3_EXT_NCONF, X509V3_R_ERROR_IN_EXTENSION); + ERR_add_error_data(4, "name=", name, ", value=", value); + } + return ret; +} + +/* CONF *conf: Config file */ +/* char *value: Value */ +X509_EXTENSION *X509V3_EXT_nconf_nid(CONF *conf, X509V3_CTX *ctx, int ext_nid, + const char *value) +{ + int crit; + int ext_type; + crit = v3_check_critical(&value); + if ((ext_type = v3_check_generic(&value))) + return v3_generic_extension(OBJ_nid2sn(ext_nid), + value, crit, ext_type, ctx); + return do_ext_nconf(conf, ctx, ext_nid, crit, value); +} + +/* CONF *conf: Config file */ +/* char *value: Value */ +static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid, + int crit, const char *value) +{ + const X509V3_EXT_METHOD *method; + X509_EXTENSION *ext; + STACK_OF(CONF_VALUE) *nval; + void *ext_struc; + + if (ext_nid == NID_undef) { + X509V3err(X509V3_F_DO_EXT_NCONF, X509V3_R_UNKNOWN_EXTENSION_NAME); + return NULL; + } + if ((method = X509V3_EXT_get_nid(ext_nid)) == NULL) { + X509V3err(X509V3_F_DO_EXT_NCONF, X509V3_R_UNKNOWN_EXTENSION); + return NULL; + } + /* Now get internal extension representation based on type */ + if (method->v2i) { + if (*value == '@') + nval = NCONF_get_section(conf, value + 1); + else + nval = X509V3_parse_list(value); + if (nval == NULL || sk_CONF_VALUE_num(nval) <= 0) { + X509V3err(X509V3_F_DO_EXT_NCONF, + X509V3_R_INVALID_EXTENSION_STRING); + ERR_add_error_data(4, "name=", OBJ_nid2sn(ext_nid), ",section=", + value); + if (*value != '@') + sk_CONF_VALUE_pop_free(nval, X509V3_conf_free); + return NULL; + } + ext_struc = method->v2i(method, ctx, nval); + if (*value != '@') + sk_CONF_VALUE_pop_free(nval, X509V3_conf_free); + if (!ext_struc) + return NULL; + } else if (method->s2i) { + if ((ext_struc = method->s2i(method, ctx, value)) == NULL) + return NULL; + } else if (method->r2i) { + if (!ctx->db || !ctx->db_meth) { + X509V3err(X509V3_F_DO_EXT_NCONF, X509V3_R_NO_CONFIG_DATABASE); + return NULL; + } + if ((ext_struc = method->r2i(method, ctx, value)) == NULL) + return NULL; + } else { + X509V3err(X509V3_F_DO_EXT_NCONF, + X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED); + ERR_add_error_data(2, "name=", OBJ_nid2sn(ext_nid)); + return NULL; + } + + ext = do_ext_i2d(method, ext_nid, crit, ext_struc); + if (method->it) + ASN1_item_free(ext_struc, ASN1_ITEM_ptr(method->it)); + else + method->ext_free(ext_struc); + return ext; + +} + +static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method, + int ext_nid, int crit, void *ext_struc) +{ + unsigned char *ext_der = NULL; + int ext_len; + ASN1_OCTET_STRING *ext_oct = NULL; + X509_EXTENSION *ext; + /* Convert internal representation to DER */ + if (method->it) { + ext_der = NULL; + ext_len = + ASN1_item_i2d(ext_struc, &ext_der, ASN1_ITEM_ptr(method->it)); + if (ext_len < 0) + goto merr; + } else { + unsigned char *p; + + ext_len = method->i2d(ext_struc, NULL); + if ((ext_der = OPENSSL_malloc(ext_len)) == NULL) + goto merr; + p = ext_der; + method->i2d(ext_struc, &p); + } + if ((ext_oct = ASN1_OCTET_STRING_new()) == NULL) + goto merr; + ext_oct->data = ext_der; + ext_der = NULL; + ext_oct->length = ext_len; + + ext = X509_EXTENSION_create_by_NID(NULL, ext_nid, crit, ext_oct); + if (!ext) + goto merr; + ASN1_OCTET_STRING_free(ext_oct); + + return ext; + + merr: + X509V3err(X509V3_F_DO_EXT_I2D, ERR_R_MALLOC_FAILURE); + OPENSSL_free(ext_der); + ASN1_OCTET_STRING_free(ext_oct); + return NULL; + +} + +/* Given an internal structure, nid and critical flag create an extension */ + +X509_EXTENSION *X509V3_EXT_i2d(int ext_nid, int crit, void *ext_struc) +{ + const X509V3_EXT_METHOD *method; + + if ((method = X509V3_EXT_get_nid(ext_nid)) == NULL) { + X509V3err(X509V3_F_X509V3_EXT_I2D, X509V3_R_UNKNOWN_EXTENSION); + return NULL; + } + return do_ext_i2d(method, ext_nid, crit, ext_struc); +} + +/* Check the extension string for critical flag */ +static int v3_check_critical(const char **value) +{ + const char *p = *value; + if ((strlen(p) < 9) || strncmp(p, "critical,", 9)) + return 0; + p += 9; + while (isspace((unsigned char)*p)) + p++; + *value = p; + return 1; +} + +/* Check extension string for generic extension and return the type */ +static int v3_check_generic(const char **value) +{ + int gen_type = 0; + const char *p = *value; + if ((strlen(p) >= 4) && strncmp(p, "DER:", 4) == 0) { + p += 4; + gen_type = 1; + } else if ((strlen(p) >= 5) && strncmp(p, "ASN1:", 5) == 0) { + p += 5; + gen_type = 2; + } else + return 0; + + while (isspace((unsigned char)*p)) + p++; + *value = p; + return gen_type; +} + +/* Create a generic extension: for now just handle DER type */ +static X509_EXTENSION *v3_generic_extension(const char *ext, const char *value, + int crit, int gen_type, + X509V3_CTX *ctx) +{ + unsigned char *ext_der = NULL; + long ext_len = 0; + ASN1_OBJECT *obj = NULL; + ASN1_OCTET_STRING *oct = NULL; + X509_EXTENSION *extension = NULL; + + if ((obj = OBJ_txt2obj(ext, 0)) == NULL) { + X509V3err(X509V3_F_V3_GENERIC_EXTENSION, + X509V3_R_EXTENSION_NAME_ERROR); + ERR_add_error_data(2, "name=", ext); + goto err; + } + + if (gen_type == 1) + ext_der = OPENSSL_hexstr2buf(value, &ext_len); + else if (gen_type == 2) + ext_der = generic_asn1(value, ctx, &ext_len); + + if (ext_der == NULL) { + X509V3err(X509V3_F_V3_GENERIC_EXTENSION, + X509V3_R_EXTENSION_VALUE_ERROR); + ERR_add_error_data(2, "value=", value); + goto err; + } + + if ((oct = ASN1_OCTET_STRING_new()) == NULL) { + X509V3err(X509V3_F_V3_GENERIC_EXTENSION, ERR_R_MALLOC_FAILURE); + goto err; + } + + oct->data = ext_der; + oct->length = ext_len; + ext_der = NULL; + + extension = X509_EXTENSION_create_by_OBJ(NULL, obj, crit, oct); + + err: + ASN1_OBJECT_free(obj); + ASN1_OCTET_STRING_free(oct); + OPENSSL_free(ext_der); + return extension; + +} + +static unsigned char *generic_asn1(const char *value, X509V3_CTX *ctx, + long *ext_len) +{ + ASN1_TYPE *typ; + unsigned char *ext_der = NULL; + typ = ASN1_generate_v3(value, ctx); + if (typ == NULL) + return NULL; + *ext_len = i2d_ASN1_TYPE(typ, &ext_der); + ASN1_TYPE_free(typ); + return ext_der; +} + +static void delete_ext(STACK_OF(X509_EXTENSION) *sk, X509_EXTENSION *dext) +{ + int idx; + ASN1_OBJECT *obj; + obj = X509_EXTENSION_get_object(dext); + while ((idx = X509v3_get_ext_by_OBJ(sk, obj, -1)) >= 0) { + X509_EXTENSION *tmpext = X509v3_get_ext(sk, idx); + X509v3_delete_ext(sk, idx); + X509_EXTENSION_free(tmpext); + } +} + +/* + * This is the main function: add a bunch of extensions based on a config + * file section to an extension STACK. + */ + +int X509V3_EXT_add_nconf_sk(CONF *conf, X509V3_CTX *ctx, const char *section, + STACK_OF(X509_EXTENSION) **sk) +{ + X509_EXTENSION *ext; + STACK_OF(CONF_VALUE) *nval; + CONF_VALUE *val; + int i; + + if ((nval = NCONF_get_section(conf, section)) == NULL) + return 0; + for (i = 0; i < sk_CONF_VALUE_num(nval); i++) { + val = sk_CONF_VALUE_value(nval, i); + if ((ext = X509V3_EXT_nconf(conf, ctx, val->name, val->value)) == NULL) + return 0; + if (ctx->flags == X509V3_CTX_REPLACE) + delete_ext(*sk, ext); + if (sk != NULL) { + if (X509v3_add_ext(sk, ext, -1) == NULL) { + X509_EXTENSION_free(ext); + return 0; + } + } + X509_EXTENSION_free(ext); + } + return 1; +} + +/* + * Convenience functions to add extensions to a certificate, CRL and request + */ + +int X509V3_EXT_add_nconf(CONF *conf, X509V3_CTX *ctx, const char *section, + X509 *cert) +{ + STACK_OF(X509_EXTENSION) **sk = NULL; + if (cert) + sk = &cert->cert_info.extensions; + return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk); +} + +/* Same as above but for a CRL */ + +int X509V3_EXT_CRL_add_nconf(CONF *conf, X509V3_CTX *ctx, const char *section, + X509_CRL *crl) +{ + STACK_OF(X509_EXTENSION) **sk = NULL; + if (crl) + sk = &crl->crl.extensions; + return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk); +} + +/* Add extensions to certificate request */ + +int X509V3_EXT_REQ_add_nconf(CONF *conf, X509V3_CTX *ctx, const char *section, + X509_REQ *req) +{ + STACK_OF(X509_EXTENSION) *extlist = NULL, **sk = NULL; + int i; + if (req) + sk = &extlist; + i = X509V3_EXT_add_nconf_sk(conf, ctx, section, sk); + if (!i || !sk) + return i; + i = X509_REQ_add_extensions(req, extlist); + sk_X509_EXTENSION_pop_free(extlist, X509_EXTENSION_free); + return i; +} + +/* Config database functions */ + +char *X509V3_get_string(X509V3_CTX *ctx, const char *name, const char *section) +{ + if (!ctx->db || !ctx->db_meth || !ctx->db_meth->get_string) { + X509V3err(X509V3_F_X509V3_GET_STRING, X509V3_R_OPERATION_NOT_DEFINED); + return NULL; + } + if (ctx->db_meth->get_string) + return ctx->db_meth->get_string(ctx->db, name, section); + return NULL; +} + +STACK_OF(CONF_VALUE) *X509V3_get_section(X509V3_CTX *ctx, const char *section) +{ + if (!ctx->db || !ctx->db_meth || !ctx->db_meth->get_section) { + X509V3err(X509V3_F_X509V3_GET_SECTION, + X509V3_R_OPERATION_NOT_DEFINED); + return NULL; + } + if (ctx->db_meth->get_section) + return ctx->db_meth->get_section(ctx->db, section); + return NULL; +} + +void X509V3_string_free(X509V3_CTX *ctx, char *str) +{ + if (!str) + return; + if (ctx->db_meth->free_string) + ctx->db_meth->free_string(ctx->db, str); +} + +void X509V3_section_free(X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *section) +{ + if (!section) + return; + if (ctx->db_meth->free_section) + ctx->db_meth->free_section(ctx->db, section); +} + +static char *nconf_get_string(void *db, const char *section, const char *value) +{ + return NCONF_get_string(db, section, value); +} + +static STACK_OF(CONF_VALUE) *nconf_get_section(void *db, const char *section) +{ + return NCONF_get_section(db, section); +} + +static X509V3_CONF_METHOD nconf_method = { + nconf_get_string, + nconf_get_section, + NULL, + NULL +}; + +void X509V3_set_nconf(X509V3_CTX *ctx, CONF *conf) +{ + ctx->db_meth = &nconf_method; + ctx->db = conf; +} + +void X509V3_set_ctx(X509V3_CTX *ctx, X509 *issuer, X509 *subj, X509_REQ *req, + X509_CRL *crl, int flags) +{ + ctx->issuer_cert = issuer; + ctx->subject_cert = subj; + ctx->crl = crl; + ctx->subject_req = req; + ctx->flags = flags; +} + +/* Old conf compatibility functions */ + +X509_EXTENSION *X509V3_EXT_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx, + const char *name, const char *value) +{ + CONF ctmp; + CONF_set_nconf(&ctmp, conf); + return X509V3_EXT_nconf(&ctmp, ctx, name, value); +} + +/* LHASH *conf: Config file */ +/* char *value: Value */ +X509_EXTENSION *X509V3_EXT_conf_nid(LHASH_OF(CONF_VALUE) *conf, + X509V3_CTX *ctx, int ext_nid, const char *value) +{ + CONF ctmp; + CONF_set_nconf(&ctmp, conf); + return X509V3_EXT_nconf_nid(&ctmp, ctx, ext_nid, value); +} + +static char *conf_lhash_get_string(void *db, const char *section, const char *value) +{ + return CONF_get_string(db, section, value); +} + +static STACK_OF(CONF_VALUE) *conf_lhash_get_section(void *db, const char *section) +{ + return CONF_get_section(db, section); +} + +static X509V3_CONF_METHOD conf_lhash_method = { + conf_lhash_get_string, + conf_lhash_get_section, + NULL, + NULL +}; + +void X509V3_set_conf_lhash(X509V3_CTX *ctx, LHASH_OF(CONF_VALUE) *lhash) +{ + ctx->db_meth = &conf_lhash_method; + ctx->db = lhash; +} + +int X509V3_EXT_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx, + const char *section, X509 *cert) +{ + CONF ctmp; + CONF_set_nconf(&ctmp, conf); + return X509V3_EXT_add_nconf(&ctmp, ctx, section, cert); +} + +/* Same as above but for a CRL */ + +int X509V3_EXT_CRL_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx, + const char *section, X509_CRL *crl) +{ + CONF ctmp; + CONF_set_nconf(&ctmp, conf); + return X509V3_EXT_CRL_add_nconf(&ctmp, ctx, section, crl); +} + +/* Add extensions to certificate request */ + +int X509V3_EXT_REQ_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx, + const char *section, X509_REQ *req) +{ + CONF ctmp; + CONF_set_nconf(&ctmp, conf); + return X509V3_EXT_REQ_add_nconf(&ctmp, ctx, section, req); +} |