--- /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 <string.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+
+#include "asn1_locl.h"
+#include "../internal.h"
+
+
+static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
+ int combine);
+static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
+static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
+static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
+
+ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it)
+{
+ ASN1_VALUE *ret = NULL;
+ if (ASN1_item_ex_new(&ret, it) > 0)
+ return ret;
+ return NULL;
+}
+
+/* Allocate an ASN1 structure */
+
+int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+ return asn1_item_ex_combine_new(pval, it, 0);
+}
+
+static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
+ int combine)
+{
+ const ASN1_TEMPLATE *tt = NULL;
+ const ASN1_COMPAT_FUNCS *cf;
+ const ASN1_EXTERN_FUNCS *ef;
+ const ASN1_AUX *aux = it->funcs;
+ ASN1_aux_cb *asn1_cb;
+ ASN1_VALUE **pseqval;
+ int i;
+ if (aux && aux->asn1_cb)
+ asn1_cb = aux->asn1_cb;
+ else
+ asn1_cb = 0;
+
+#ifdef CRYPTO_MDEBUG
+ if (it->sname)
+ CRYPTO_push_info(it->sname);
+#endif
+
+ switch (it->itype) {
+
+ case ASN1_ITYPE_EXTERN:
+ ef = it->funcs;
+ if (ef && ef->asn1_ex_new) {
+ if (!ef->asn1_ex_new(pval, it))
+ goto memerr;
+ }
+ break;
+
+ case ASN1_ITYPE_COMPAT:
+ cf = it->funcs;
+ if (cf && cf->asn1_new) {
+ *pval = cf->asn1_new();
+ if (!*pval)
+ goto memerr;
+ }
+ break;
+
+ case ASN1_ITYPE_PRIMITIVE:
+ if (it->templates) {
+ if (!ASN1_template_new(pval, it->templates))
+ goto memerr;
+ } else if (!ASN1_primitive_new(pval, it))
+ goto memerr;
+ break;
+
+ case ASN1_ITYPE_MSTRING:
+ if (!ASN1_primitive_new(pval, it))
+ goto memerr;
+ break;
+
+ case ASN1_ITYPE_CHOICE:
+ if (asn1_cb) {
+ i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
+ if (!i)
+ goto auxerr;
+ if (i == 2) {
+#ifdef CRYPTO_MDEBUG
+ if (it->sname)
+ CRYPTO_pop_info();
+#endif
+ return 1;
+ }
+ }
+ if (!combine) {
+ *pval = OPENSSL_malloc(it->size);
+ if (!*pval)
+ goto memerr;
+ OPENSSL_memset(*pval, 0, it->size);
+ }
+ asn1_set_choice_selector(pval, -1, it);
+ if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
+ goto auxerr2;
+ break;
+
+ case ASN1_ITYPE_NDEF_SEQUENCE:
+ case ASN1_ITYPE_SEQUENCE:
+ if (asn1_cb) {
+ i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
+ if (!i)
+ goto auxerr;
+ if (i == 2) {
+#ifdef CRYPTO_MDEBUG
+ if (it->sname)
+ CRYPTO_pop_info();
+#endif
+ return 1;
+ }
+ }
+ if (!combine) {
+ *pval = OPENSSL_malloc(it->size);
+ if (!*pval)
+ goto memerr;
+ OPENSSL_memset(*pval, 0, it->size);
+ asn1_refcount_set_one(pval, it);
+ asn1_enc_init(pval, it);
+ }
+ for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
+ pseqval = asn1_get_field_ptr(pval, tt);
+ if (!ASN1_template_new(pseqval, tt))
+ goto memerr2;
+ }
+ if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
+ goto auxerr2;
+ break;
+ }
+#ifdef CRYPTO_MDEBUG
+ if (it->sname)
+ CRYPTO_pop_info();
+#endif
+ return 1;
+
+ memerr2:
+ asn1_item_combine_free(pval, it, combine);
+ memerr:
+ OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+#ifdef CRYPTO_MDEBUG
+ if (it->sname)
+ CRYPTO_pop_info();
+#endif
+ return 0;
+
+ auxerr2:
+ asn1_item_combine_free(pval, it, combine);
+ auxerr:
+ OPENSSL_PUT_ERROR(ASN1, ASN1_R_AUX_ERROR);
+#ifdef CRYPTO_MDEBUG
+ if (it->sname)
+ CRYPTO_pop_info();
+#endif
+ return 0;
+
+}
+
+static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+ const ASN1_EXTERN_FUNCS *ef;
+
+ switch (it->itype) {
+
+ case ASN1_ITYPE_EXTERN:
+ ef = it->funcs;
+ if (ef && ef->asn1_ex_clear)
+ ef->asn1_ex_clear(pval, it);
+ else
+ *pval = NULL;
+ break;
+
+ case ASN1_ITYPE_PRIMITIVE:
+ if (it->templates)
+ asn1_template_clear(pval, it->templates);
+ else
+ asn1_primitive_clear(pval, it);
+ break;
+
+ case ASN1_ITYPE_MSTRING:
+ asn1_primitive_clear(pval, it);
+ break;
+
+ case ASN1_ITYPE_COMPAT:
+ case ASN1_ITYPE_CHOICE:
+ case ASN1_ITYPE_SEQUENCE:
+ case ASN1_ITYPE_NDEF_SEQUENCE:
+ *pval = NULL;
+ break;
+ }
+}
+
+int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
+{
+ const ASN1_ITEM *it = ASN1_ITEM_ptr(tt->item);
+ int ret;
+ if (tt->flags & ASN1_TFLG_OPTIONAL) {
+ asn1_template_clear(pval, tt);
+ return 1;
+ }
+ /* If ANY DEFINED BY nothing to do */
+
+ if (tt->flags & ASN1_TFLG_ADB_MASK) {
+ *pval = NULL;
+ return 1;
+ }
+#ifdef CRYPTO_MDEBUG
+ if (tt->field_name)
+ CRYPTO_push_info(tt->field_name);
+#endif
+ /* If SET OF or SEQUENCE OF, its a STACK */
+ if (tt->flags & ASN1_TFLG_SK_MASK) {
+ STACK_OF(ASN1_VALUE) *skval;
+ skval = sk_ASN1_VALUE_new_null();
+ if (!skval) {
+ OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+ ret = 0;
+ goto done;
+ }
+ *pval = (ASN1_VALUE *)skval;
+ ret = 1;
+ goto done;
+ }
+ /* Otherwise pass it back to the item routine */
+ ret = asn1_item_ex_combine_new(pval, it, tt->flags & ASN1_TFLG_COMBINE);
+ done:
+#ifdef CRYPTO_MDEBUG
+ if (it->sname)
+ CRYPTO_pop_info();
+#endif
+ return ret;
+}
+
+static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
+{
+ /* If ADB or STACK just NULL the field */
+ if (tt->flags & (ASN1_TFLG_ADB_MASK | ASN1_TFLG_SK_MASK))
+ *pval = NULL;
+ else
+ asn1_item_clear(pval, ASN1_ITEM_ptr(tt->item));
+}
+
+/*
+ * NB: could probably combine most of the real XXX_new() behaviour and junk
+ * all the old functions.
+ */
+
+int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+ ASN1_TYPE *typ;
+ ASN1_STRING *str;
+ int utype;
+
+ if (!it)
+ return 0;
+
+ if (it->funcs) {
+ const ASN1_PRIMITIVE_FUNCS *pf = it->funcs;
+ if (pf->prim_new)
+ return pf->prim_new(pval, it);
+ }
+
+ if (it->itype == ASN1_ITYPE_MSTRING)
+ utype = -1;
+ else
+ utype = it->utype;
+ switch (utype) {
+ case V_ASN1_OBJECT:
+ *pval = (ASN1_VALUE *)OBJ_nid2obj(NID_undef);
+ return 1;
+
+ case V_ASN1_BOOLEAN:
+ *(ASN1_BOOLEAN *)pval = it->size;
+ return 1;
+
+ case V_ASN1_NULL:
+ *pval = (ASN1_VALUE *)1;
+ return 1;
+
+ case V_ASN1_ANY:
+ typ = OPENSSL_malloc(sizeof(ASN1_TYPE));
+ if (!typ)
+ return 0;
+ typ->value.ptr = NULL;
+ typ->type = -1;
+ *pval = (ASN1_VALUE *)typ;
+ break;
+
+ default:
+ str = ASN1_STRING_type_new(utype);
+ if (it->itype == ASN1_ITYPE_MSTRING && str)
+ str->flags |= ASN1_STRING_FLAG_MSTRING;
+ *pval = (ASN1_VALUE *)str;
+ break;
+ }
+ if (*pval)
+ return 1;
+ return 0;
+}
+
+static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+ int utype;
+ if (it && it->funcs) {
+ const ASN1_PRIMITIVE_FUNCS *pf = it->funcs;
+ if (pf->prim_clear)
+ pf->prim_clear(pval, it);
+ else
+ *pval = NULL;
+ return;
+ }
+ if (!it || (it->itype == ASN1_ITYPE_MSTRING))
+ utype = -1;
+ else
+ utype = it->utype;
+ if (utype == V_ASN1_BOOLEAN)
+ *(ASN1_BOOLEAN *)pval = it->size;
+ else
+ *pval = NULL;
+}
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