--- /dev/null
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/mem.h>
+
+#include "../internal.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);
+
+/*
+ * 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)
+ 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;
+ unsigned char *p = NULL;
+ int i, seqcontlen, seqlen, ndef = 1;
+ const ASN1_COMPAT_FUNCS *cf;
+ 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);
+ break;
+
+ 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_COMPAT:
+ /* old style hackery... */
+ cf = it->funcs;
+ if (out)
+ p = *out;
+ i = cf->asn1_i2d(*pval, out);
+ /*
+ * Fixup for IMPLICIT tag: note this messes up for tags > 30, but so
+ * did the old code. Tags > 30 are very rare anyway.
+ */
+ if (out && (tag != -1))
+ *p = aclass | tag | (*p & V_ASN1_CONSTRUCTED);
+ return i;
+
+ 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;
+ size_t j;
+ flags = tt->flags;
+ /*
+ * 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 (j = 0; j < sk_ASN1_VALUE_num(sk); j++) {
+ int tmplen;
+ skitem = sk_ASN1_VALUE_value(sk, j);
+ 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 = OPENSSL_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)
+{
+ size_t 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)
+ return 0;
+ tmpdat = OPENSSL_malloc(skcontlen);
+ if (!tmpdat) {
+ 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++) {
+ OPENSSL_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 */
+
+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);
+ break;
+
+ 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);
+ break;
+
+ 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)
+ OPENSSL_memcpy(cout, cont, len);
+ return len;
+}
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