initial/final commitHEADmaster

1 files changed, 605 insertions, 0 deletions

diff --git a/openssl-1.1.0h/crypto/asn1/tasn_enc.c b/openssl-1.1.0h/crypto/asn1/tasn_enc.c
new file mode 100644
index 0000000..caa4869
--- /dev/null
+++ b/openssl-1.1.0h/crypto/asn1/tasn_enc.c
@@ -0,0 +1,605 @@
+/*
+ * Copyright 2000-2016 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
+ */
+
+#include <stddef.h>
+#include <string.h>
+#include "internal/cryptlib.h"
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/objects.h>
+#include "internal/asn1_int.h"
+#include "asn1_locl.h"
+
+static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out,
+                                 const ASN1_ITEM *it, int tag, int aclass);
+static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out,
+                            int skcontlen, const ASN1_ITEM *item,
+                            int do_sort, int iclass);
+static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
+                                const ASN1_TEMPLATE *tt, int tag, int aclass);
+static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out,
+                               const ASN1_ITEM *it, int flags);
+static int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype,
+                       const ASN1_ITEM *it);
+
+/*
+ * Top level i2d equivalents: the 'ndef' variant instructs the encoder to use
+ * indefinite length constructed encoding, where appropriate
+ */
+
+int ASN1_item_ndef_i2d(ASN1_VALUE *val, unsigned char **out,
+                       const ASN1_ITEM *it)
+{
+    return asn1_item_flags_i2d(val, out, it, ASN1_TFLG_NDEF);
+}
+
+int ASN1_item_i2d(ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it)
+{
+    return asn1_item_flags_i2d(val, out, it, 0);
+}
+
+/*
+ * Encode an ASN1 item, this is use by the standard 'i2d' function. 'out'
+ * points to a buffer to output the data to. The new i2d has one additional
+ * feature. If the output buffer is NULL (i.e. *out == NULL) then a buffer is
+ * allocated and populated with the encoding.
+ */
+
+static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out,
+                               const ASN1_ITEM *it, int flags)
+{
+    if (out && !*out) {
+        unsigned char *p, *buf;
+        int len;
+        len = ASN1_item_ex_i2d(&val, NULL, it, -1, flags);
+        if (len <= 0)
+            return len;
+        buf = OPENSSL_malloc(len);
+        if (buf == NULL)
+            return -1;
+        p = buf;
+        ASN1_item_ex_i2d(&val, &p, it, -1, flags);
+        *out = buf;
+        return len;
+    }
+
+    return ASN1_item_ex_i2d(&val, out, it, -1, flags);
+}
+
+/*
+ * Encode an item, taking care of IMPLICIT tagging (if any). This function
+ * performs the normal item handling: it can be used in external types.
+ */
+
+int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
+                     const ASN1_ITEM *it, int tag, int aclass)
+{
+    const ASN1_TEMPLATE *tt = NULL;
+    int i, seqcontlen, seqlen, ndef = 1;
+    const ASN1_EXTERN_FUNCS *ef;
+    const ASN1_AUX *aux = it->funcs;
+    ASN1_aux_cb *asn1_cb = 0;
+
+    if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval)
+        return 0;
+
+    if (aux && aux->asn1_cb)
+        asn1_cb = aux->asn1_cb;
+
+    switch (it->itype) {
+
+    case ASN1_ITYPE_PRIMITIVE:
+        if (it->templates)
+            return asn1_template_ex_i2d(pval, out, it->templates,
+                                        tag, aclass);
+        return asn1_i2d_ex_primitive(pval, out, it, tag, aclass);
+
+    case ASN1_ITYPE_MSTRING:
+        return asn1_i2d_ex_primitive(pval, out, it, -1, aclass);
+
+    case ASN1_ITYPE_CHOICE:
+        if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))
+            return 0;
+        i = asn1_get_choice_selector(pval, it);
+        if ((i >= 0) && (i < it->tcount)) {
+            ASN1_VALUE **pchval;
+            const ASN1_TEMPLATE *chtt;
+            chtt = it->templates + i;
+            pchval = asn1_get_field_ptr(pval, chtt);
+            return asn1_template_ex_i2d(pchval, out, chtt, -1, aclass);
+        }
+        /* Fixme: error condition if selector out of range */
+        if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL))
+            return 0;
+        break;
+
+    case ASN1_ITYPE_EXTERN:
+        /* If new style i2d it does all the work */
+        ef = it->funcs;
+        return ef->asn1_ex_i2d(pval, out, it, tag, aclass);
+
+    case ASN1_ITYPE_NDEF_SEQUENCE:
+        /* Use indefinite length constructed if requested */
+        if (aclass & ASN1_TFLG_NDEF)
+            ndef = 2;
+        /* fall through */
+
+    case ASN1_ITYPE_SEQUENCE:
+        i = asn1_enc_restore(&seqcontlen, out, pval, it);
+        /* An error occurred */
+        if (i < 0)
+            return 0;
+        /* We have a valid cached encoding... */
+        if (i > 0)
+            return seqcontlen;
+        /* Otherwise carry on */
+        seqcontlen = 0;
+        /* If no IMPLICIT tagging set to SEQUENCE, UNIVERSAL */
+        if (tag == -1) {
+            tag = V_ASN1_SEQUENCE;
+            /* Retain any other flags in aclass */
+            aclass = (aclass & ~ASN1_TFLG_TAG_CLASS)
+                | V_ASN1_UNIVERSAL;
+        }
+        if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))
+            return 0;
+        /* First work out sequence content length */
+        for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
+            const ASN1_TEMPLATE *seqtt;
+            ASN1_VALUE **pseqval;
+            int tmplen;
+            seqtt = asn1_do_adb(pval, tt, 1);
+            if (!seqtt)
+                return 0;
+            pseqval = asn1_get_field_ptr(pval, seqtt);
+            tmplen = asn1_template_ex_i2d(pseqval, NULL, seqtt, -1, aclass);
+            if (tmplen == -1 || (tmplen > INT_MAX - seqcontlen))
+                return -1;
+            seqcontlen += tmplen;
+        }
+
+        seqlen = ASN1_object_size(ndef, seqcontlen, tag);
+        if (!out || seqlen == -1)
+            return seqlen;
+        /* Output SEQUENCE header */
+        ASN1_put_object(out, ndef, seqcontlen, tag, aclass);
+        for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
+            const ASN1_TEMPLATE *seqtt;
+            ASN1_VALUE **pseqval;
+            seqtt = asn1_do_adb(pval, tt, 1);
+            if (!seqtt)
+                return 0;
+            pseqval = asn1_get_field_ptr(pval, seqtt);
+            /* FIXME: check for errors in enhanced version */
+            asn1_template_ex_i2d(pseqval, out, seqtt, -1, aclass);
+        }
+        if (ndef == 2)
+            ASN1_put_eoc(out);
+        if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL))
+            return 0;
+        return seqlen;
+
+    default:
+        return 0;
+
+    }
+    return 0;
+}
+
+static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
+                                const ASN1_TEMPLATE *tt, int tag, int iclass)
+{
+    int i, ret, flags, ttag, tclass, ndef;
+    ASN1_VALUE *tval;
+    flags = tt->flags;
+
+    /*
+     * If field is embedded then val needs fixing so it is a pointer to
+     * a pointer to a field.
+     */
+    if (flags & ASN1_TFLG_EMBED) {
+        tval = (ASN1_VALUE *)pval;
+        pval = &tval;
+    }
+    /*
+     * Work out tag and class to use: tagging may come either from the
+     * template or the arguments, not both because this would create
+     * ambiguity. Additionally the iclass argument may contain some
+     * additional flags which should be noted and passed down to other
+     * levels.
+     */
+    if (flags & ASN1_TFLG_TAG_MASK) {
+        /* Error if argument and template tagging */
+        if (tag != -1)
+            /* FIXME: error code here */
+            return -1;
+        /* Get tagging from template */
+        ttag = tt->tag;
+        tclass = flags & ASN1_TFLG_TAG_CLASS;
+    } else if (tag != -1) {
+        /* No template tagging, get from arguments */
+        ttag = tag;
+        tclass = iclass & ASN1_TFLG_TAG_CLASS;
+    } else {
+        ttag = -1;
+        tclass = 0;
+    }
+    /*
+     * Remove any class mask from iflag.
+     */
+    iclass &= ~ASN1_TFLG_TAG_CLASS;
+
+    /*
+     * At this point 'ttag' contains the outer tag to use, 'tclass' is the
+     * class and iclass is any flags passed to this function.
+     */
+
+    /* if template and arguments require ndef, use it */
+    if ((flags & ASN1_TFLG_NDEF) && (iclass & ASN1_TFLG_NDEF))
+        ndef = 2;
+    else
+        ndef = 1;
+
+    if (flags & ASN1_TFLG_SK_MASK) {
+        /* SET OF, SEQUENCE OF */
+        STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval;
+        int isset, sktag, skaclass;
+        int skcontlen, sklen;
+        ASN1_VALUE *skitem;
+
+        if (!*pval)
+            return 0;
+
+        if (flags & ASN1_TFLG_SET_OF) {
+            isset = 1;
+            /* 2 means we reorder */
+            if (flags & ASN1_TFLG_SEQUENCE_OF)
+                isset = 2;
+        } else
+            isset = 0;
+
+        /*
+         * Work out inner tag value: if EXPLICIT or no tagging use underlying
+         * type.
+         */
+        if ((ttag != -1) && !(flags & ASN1_TFLG_EXPTAG)) {
+            sktag = ttag;
+            skaclass = tclass;
+        } else {
+            skaclass = V_ASN1_UNIVERSAL;
+            if (isset)
+                sktag = V_ASN1_SET;
+            else
+                sktag = V_ASN1_SEQUENCE;
+        }
+
+        /* Determine total length of items */
+        skcontlen = 0;
+        for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) {
+            int tmplen;
+            skitem = sk_ASN1_VALUE_value(sk, i);
+            tmplen = ASN1_item_ex_i2d(&skitem, NULL, ASN1_ITEM_ptr(tt->item),
+                                      -1, iclass);
+            if (tmplen == -1 || (skcontlen > INT_MAX - tmplen))
+                return -1;
+            skcontlen += tmplen;
+        }
+        sklen = ASN1_object_size(ndef, skcontlen, sktag);
+        if (sklen == -1)
+            return -1;
+        /* If EXPLICIT need length of surrounding tag */
+        if (flags & ASN1_TFLG_EXPTAG)
+            ret = ASN1_object_size(ndef, sklen, ttag);
+        else
+            ret = sklen;
+
+        if (!out || ret == -1)
+            return ret;
+
+        /* Now encode this lot... */
+        /* EXPLICIT tag */
+        if (flags & ASN1_TFLG_EXPTAG)
+            ASN1_put_object(out, ndef, sklen, ttag, tclass);
+        /* SET or SEQUENCE and IMPLICIT tag */
+        ASN1_put_object(out, ndef, skcontlen, sktag, skaclass);
+        /* And the stuff itself */
+        asn1_set_seq_out(sk, out, skcontlen, ASN1_ITEM_ptr(tt->item),
+                         isset, iclass);
+        if (ndef == 2) {
+            ASN1_put_eoc(out);
+            if (flags & ASN1_TFLG_EXPTAG)
+                ASN1_put_eoc(out);
+        }
+
+        return ret;
+    }
+
+    if (flags & ASN1_TFLG_EXPTAG) {
+        /* EXPLICIT tagging */
+        /* Find length of tagged item */
+        i = ASN1_item_ex_i2d(pval, NULL, ASN1_ITEM_ptr(tt->item), -1, iclass);
+        if (!i)
+            return 0;
+        /* Find length of EXPLICIT tag */
+        ret = ASN1_object_size(ndef, i, ttag);
+        if (out && ret != -1) {
+            /* Output tag and item */
+            ASN1_put_object(out, ndef, i, ttag, tclass);
+            ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item), -1, iclass);
+            if (ndef == 2)
+                ASN1_put_eoc(out);
+        }
+        return ret;
+    }
+
+    /* Either normal or IMPLICIT tagging: combine class and flags */
+    return ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item),
+                            ttag, tclass | iclass);
+
+}
+
+/* Temporary structure used to hold DER encoding of items for SET OF */
+
+typedef struct {
+    unsigned char *data;
+    int length;
+    ASN1_VALUE *field;
+} DER_ENC;
+
+static int der_cmp(const void *a, const void *b)
+{
+    const DER_ENC *d1 = a, *d2 = b;
+    int cmplen, i;
+    cmplen = (d1->length < d2->length) ? d1->length : d2->length;
+    i = memcmp(d1->data, d2->data, cmplen);
+    if (i)
+        return i;
+    return d1->length - d2->length;
+}
+
+/* Output the content octets of SET OF or SEQUENCE OF */
+
+static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out,
+                            int skcontlen, const ASN1_ITEM *item,
+                            int do_sort, int iclass)
+{
+    int i;
+    ASN1_VALUE *skitem;
+    unsigned char *tmpdat = NULL, *p = NULL;
+    DER_ENC *derlst = NULL, *tder;
+    if (do_sort) {
+        /* Don't need to sort less than 2 items */
+        if (sk_ASN1_VALUE_num(sk) < 2)
+            do_sort = 0;
+        else {
+            derlst = OPENSSL_malloc(sk_ASN1_VALUE_num(sk)
+                                    * sizeof(*derlst));
+            if (derlst == NULL)
+                return 0;
+            tmpdat = OPENSSL_malloc(skcontlen);
+            if (tmpdat == NULL) {
+                OPENSSL_free(derlst);
+                return 0;
+            }
+        }
+    }
+    /* If not sorting just output each item */
+    if (!do_sort) {
+        for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) {
+            skitem = sk_ASN1_VALUE_value(sk, i);
+            ASN1_item_ex_i2d(&skitem, out, item, -1, iclass);
+        }
+        return 1;
+    }
+    p = tmpdat;
+
+    /* Doing sort: build up a list of each member's DER encoding */
+    for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) {
+        skitem = sk_ASN1_VALUE_value(sk, i);
+        tder->data = p;
+        tder->length = ASN1_item_ex_i2d(&skitem, &p, item, -1, iclass);
+        tder->field = skitem;
+    }
+
+    /* Now sort them */
+    qsort(derlst, sk_ASN1_VALUE_num(sk), sizeof(*derlst), der_cmp);
+    /* Output sorted DER encoding */
+    p = *out;
+    for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) {
+        memcpy(p, tder->data, tder->length);
+        p += tder->length;
+    }
+    *out = p;
+    /* If do_sort is 2 then reorder the STACK */
+    if (do_sort == 2) {
+        for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++)
+            (void)sk_ASN1_VALUE_set(sk, i, tder->field);
+    }
+    OPENSSL_free(derlst);
+    OPENSSL_free(tmpdat);
+    return 1;
+}
+
+static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out,
+                                 const ASN1_ITEM *it, int tag, int aclass)
+{
+    int len;
+    int utype;
+    int usetag;
+    int ndef = 0;
+
+    utype = it->utype;
+
+    /*
+     * Get length of content octets and maybe find out the underlying type.
+     */
+
+    len = asn1_ex_i2c(pval, NULL, &utype, it);
+
+    /*
+     * If SEQUENCE, SET or OTHER then header is included in pseudo content
+     * octets so don't include tag+length. We need to check here because the
+     * call to asn1_ex_i2c() could change utype.
+     */
+    if ((utype == V_ASN1_SEQUENCE) || (utype == V_ASN1_SET) ||
+        (utype == V_ASN1_OTHER))
+        usetag = 0;
+    else
+        usetag = 1;
+
+    /* -1 means omit type */
+
+    if (len == -1)
+        return 0;
+
+    /* -2 return is special meaning use ndef */
+    if (len == -2) {
+        ndef = 2;
+        len = 0;
+    }
+
+    /* If not implicitly tagged get tag from underlying type */
+    if (tag == -1)
+        tag = utype;
+
+    /* Output tag+length followed by content octets */
+    if (out) {
+        if (usetag)
+            ASN1_put_object(out, ndef, len, tag, aclass);
+        asn1_ex_i2c(pval, *out, &utype, it);
+        if (ndef)
+            ASN1_put_eoc(out);
+        else
+            *out += len;
+    }
+
+    if (usetag)
+        return ASN1_object_size(ndef, len, tag);
+    return len;
+}
+
+/* Produce content octets from a structure */
+
+static int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype,
+                       const ASN1_ITEM *it)
+{
+    ASN1_BOOLEAN *tbool = NULL;
+    ASN1_STRING *strtmp;
+    ASN1_OBJECT *otmp;
+    int utype;
+    const unsigned char *cont;
+    unsigned char c;
+    int len;
+    const ASN1_PRIMITIVE_FUNCS *pf;
+    pf = it->funcs;
+    if (pf && pf->prim_i2c)
+        return pf->prim_i2c(pval, cout, putype, it);
+
+    /* Should type be omitted? */
+    if ((it->itype != ASN1_ITYPE_PRIMITIVE)
+        || (it->utype != V_ASN1_BOOLEAN)) {
+        if (!*pval)
+            return -1;
+    }
+
+    if (it->itype == ASN1_ITYPE_MSTRING) {
+        /* If MSTRING type set the underlying type */
+        strtmp = (ASN1_STRING *)*pval;
+        utype = strtmp->type;
+        *putype = utype;
+    } else if (it->utype == V_ASN1_ANY) {
+        /* If ANY set type and pointer to value */
+        ASN1_TYPE *typ;
+        typ = (ASN1_TYPE *)*pval;
+        utype = typ->type;
+        *putype = utype;
+        pval = &typ->value.asn1_value;
+    } else
+        utype = *putype;
+
+    switch (utype) {
+    case V_ASN1_OBJECT:
+        otmp = (ASN1_OBJECT *)*pval;
+        cont = otmp->data;
+        len = otmp->length;
+        break;
+
+    case V_ASN1_NULL:
+        cont = NULL;
+        len = 0;
+        break;
+
+    case V_ASN1_BOOLEAN:
+        tbool = (ASN1_BOOLEAN *)pval;
+        if (*tbool == -1)
+            return -1;
+        if (it->utype != V_ASN1_ANY) {
+            /*
+             * Default handling if value == size field then omit
+             */
+            if (*tbool && (it->size > 0))
+                return -1;
+            if (!*tbool && !it->size)
+                return -1;
+        }
+        c = (unsigned char)*tbool;
+        cont = &c;
+        len = 1;
+        break;
+
+    case V_ASN1_BIT_STRING:
+        return i2c_ASN1_BIT_STRING((ASN1_BIT_STRING *)*pval,
+                                   cout ? &cout : NULL);
+
+    case V_ASN1_INTEGER:
+    case V_ASN1_ENUMERATED:
+        /*
+         * These are all have the same content format as ASN1_INTEGER
+         */
+        return i2c_ASN1_INTEGER((ASN1_INTEGER *)*pval, cout ? &cout : NULL);
+
+    case V_ASN1_OCTET_STRING:
+    case V_ASN1_NUMERICSTRING:
+    case V_ASN1_PRINTABLESTRING:
+    case V_ASN1_T61STRING:
+    case V_ASN1_VIDEOTEXSTRING:
+    case V_ASN1_IA5STRING:
+    case V_ASN1_UTCTIME:
+    case V_ASN1_GENERALIZEDTIME:
+    case V_ASN1_GRAPHICSTRING:
+    case V_ASN1_VISIBLESTRING:
+    case V_ASN1_GENERALSTRING:
+    case V_ASN1_UNIVERSALSTRING:
+    case V_ASN1_BMPSTRING:
+    case V_ASN1_UTF8STRING:
+    case V_ASN1_SEQUENCE:
+    case V_ASN1_SET:
+    default:
+        /* All based on ASN1_STRING and handled the same */
+        strtmp = (ASN1_STRING *)*pval;
+        /* Special handling for NDEF */
+        if ((it->size == ASN1_TFLG_NDEF)
+            && (strtmp->flags & ASN1_STRING_FLAG_NDEF)) {
+            if (cout) {
+                strtmp->data = cout;
+                strtmp->length = 0;
+            }
+            /* Special return code */
+            return -2;
+        }
+        cont = strtmp->data;
+        len = strtmp->length;
+
+        break;
+
+    }
+    if (cout && len)
+        memcpy(cout, cont, len);
+    return len;
+}