2 * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include <openssl/asn1.h>
12 #include <openssl/objects.h>
13 #include <openssl/err.h>
14 #include <openssl/asn1t.h>
16 #include "asn1_locl.h"
18 static int asn1_item_embed_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
20 static int asn1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
22 static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
23 static int asn1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
24 static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
25 static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
27 ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it)
29 ASN1_VALUE *ret = NULL;
30 if (ASN1_item_ex_new(&ret, it) > 0)
35 /* Allocate an ASN1 structure */
37 int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
39 return asn1_item_embed_new(pval, it, 0);
42 int asn1_item_embed_new(ASN1_VALUE **pval, const ASN1_ITEM *it, int embed)
44 const ASN1_TEMPLATE *tt = NULL;
45 const ASN1_EXTERN_FUNCS *ef;
46 const ASN1_AUX *aux = it->funcs;
50 if (aux && aux->asn1_cb)
51 asn1_cb = aux->asn1_cb;
55 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
56 OPENSSL_mem_debug_push(it->sname ? it->sname : "asn1_item_embed_new");
61 case ASN1_ITYPE_EXTERN:
63 if (ef && ef->asn1_ex_new) {
64 if (!ef->asn1_ex_new(pval, it))
69 case ASN1_ITYPE_PRIMITIVE:
71 if (!asn1_template_new(pval, it->templates))
73 } else if (!asn1_primitive_new(pval, it, embed))
77 case ASN1_ITYPE_MSTRING:
78 if (!asn1_primitive_new(pval, it, embed))
82 case ASN1_ITYPE_CHOICE:
84 i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
88 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
89 OPENSSL_mem_debug_pop();
95 memset(*pval, 0, it->size);
97 *pval = OPENSSL_zalloc(it->size);
101 asn1_set_choice_selector(pval, -1, it);
102 if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
106 case ASN1_ITYPE_NDEF_SEQUENCE:
107 case ASN1_ITYPE_SEQUENCE:
109 i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
113 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
114 OPENSSL_mem_debug_pop();
120 memset(*pval, 0, it->size);
122 *pval = OPENSSL_zalloc(it->size);
126 asn1_do_lock(pval, 0, it);
127 asn1_enc_init(pval, it);
128 for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
129 pseqval = asn1_get_field_ptr(pval, tt);
130 if (!asn1_template_new(pseqval, tt))
133 if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
137 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
138 OPENSSL_mem_debug_pop();
143 ASN1err(ASN1_F_ASN1_ITEM_EMBED_NEW, ERR_R_MALLOC_FAILURE);
144 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
145 OPENSSL_mem_debug_pop();
150 ASN1err(ASN1_F_ASN1_ITEM_EMBED_NEW, ASN1_R_AUX_ERROR);
151 ASN1_item_ex_free(pval, it);
152 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
153 OPENSSL_mem_debug_pop();
159 static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
161 const ASN1_EXTERN_FUNCS *ef;
165 case ASN1_ITYPE_EXTERN:
167 if (ef && ef->asn1_ex_clear)
168 ef->asn1_ex_clear(pval, it);
173 case ASN1_ITYPE_PRIMITIVE:
175 asn1_template_clear(pval, it->templates);
177 asn1_primitive_clear(pval, it);
180 case ASN1_ITYPE_MSTRING:
181 asn1_primitive_clear(pval, it);
184 case ASN1_ITYPE_CHOICE:
185 case ASN1_ITYPE_SEQUENCE:
186 case ASN1_ITYPE_NDEF_SEQUENCE:
192 static int asn1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
194 const ASN1_ITEM *it = ASN1_ITEM_ptr(tt->item);
195 int embed = tt->flags & ASN1_TFLG_EMBED;
199 tval = (ASN1_VALUE *)pval;
202 if (tt->flags & ASN1_TFLG_OPTIONAL) {
203 asn1_template_clear(pval, tt);
206 /* If ANY DEFINED BY nothing to do */
208 if (tt->flags & ASN1_TFLG_ADB_MASK) {
212 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
213 OPENSSL_mem_debug_push(tt->field_name
214 ? tt->field_name : "asn1_template_new");
216 /* If SET OF or SEQUENCE OF, its a STACK */
217 if (tt->flags & ASN1_TFLG_SK_MASK) {
218 STACK_OF(ASN1_VALUE) *skval;
219 skval = sk_ASN1_VALUE_new_null();
221 ASN1err(ASN1_F_ASN1_TEMPLATE_NEW, ERR_R_MALLOC_FAILURE);
225 *pval = (ASN1_VALUE *)skval;
229 /* Otherwise pass it back to the item routine */
230 ret = asn1_item_embed_new(pval, it, embed);
232 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
233 OPENSSL_mem_debug_pop();
238 static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
240 /* If ADB or STACK just NULL the field */
241 if (tt->flags & (ASN1_TFLG_ADB_MASK | ASN1_TFLG_SK_MASK))
244 asn1_item_clear(pval, ASN1_ITEM_ptr(tt->item));
248 * NB: could probably combine most of the real XXX_new() behaviour and junk
249 * all the old functions.
252 static int asn1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
263 const ASN1_PRIMITIVE_FUNCS *pf = it->funcs;
265 return pf->prim_new(pval, it);
268 if (it->itype == ASN1_ITYPE_MSTRING)
274 *pval = (ASN1_VALUE *)OBJ_nid2obj(NID_undef);
278 *(ASN1_BOOLEAN *)pval = it->size;
282 *pval = (ASN1_VALUE *)1;
286 typ = OPENSSL_malloc(sizeof(*typ));
289 typ->value.ptr = NULL;
291 *pval = (ASN1_VALUE *)typ;
296 str = *(ASN1_STRING **)pval;
297 memset(str, 0, sizeof(*str));
299 str->flags = ASN1_STRING_FLAG_EMBED;
301 str = ASN1_STRING_type_new(utype);
302 *pval = (ASN1_VALUE *)str;
304 if (it->itype == ASN1_ITYPE_MSTRING && str)
305 str->flags |= ASN1_STRING_FLAG_MSTRING;
313 static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
316 if (it && it->funcs) {
317 const ASN1_PRIMITIVE_FUNCS *pf = it->funcs;
319 pf->prim_clear(pval, it);
324 if (!it || (it->itype == ASN1_ITYPE_MSTRING))
328 if (utype == V_ASN1_BOOLEAN)
329 *(ASN1_BOOLEAN *)pval = it->size;