1 /* tasn_new.c */
2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
3 * project 2000.
4 */
5 /* ====================================================================
6 * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59
60 #include <stddef.h>
61 #include <openssl/asn1.h>
62 #include <openssl/objects.h>
63 #include <openssl/err.h>
64 #include <openssl/asn1t.h>
65 #include <string.h>
66
67 static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it, int combine);
68 static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
69 static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
70 void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
71
72 ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it)
73 109759 {
74 109759 ASN1_VALUE *ret = NULL;
75 109759 if(ASN1_item_ex_new(&ret, it) > 0) return ret;
76 0 return NULL;
77 }
78
79 /* Allocate an ASN1 structure */
80
81 int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
82 534932 {
83 534932 return asn1_item_ex_combine_new(pval, it, 0);
84 }
85
86 static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it, int combine)
87 1782449 {
88 1782449 const ASN1_TEMPLATE *tt = NULL;
89 const ASN1_COMPAT_FUNCS *cf;
90 const ASN1_EXTERN_FUNCS *ef;
91 1782449 const ASN1_AUX *aux = it->funcs;
92 ASN1_aux_cb *asn1_cb;
93 ASN1_VALUE **pseqval;
94 int i;
95 1782449 if(aux && aux->asn1_cb) asn1_cb = aux->asn1_cb;
96 1715088 else asn1_cb = 0;
97
98 1782449 if(!combine) *pval = NULL;
99
100 #ifdef CRYPTO_MDEBUG
101 if(it->sname) CRYPTO_push_info(it->sname);
102 #endif
103
104 1782449 switch(it->itype) {
105
106 case ASN1_ITYPE_EXTERN:
107 57387 ef = it->funcs;
108 57387 if(ef && ef->asn1_ex_new) {
109 57387 if(!ef->asn1_ex_new(pval, it))
110 goto memerr;
111 }
112 break;
113
114 case ASN1_ITYPE_COMPAT:
115 0 cf = it->funcs;
116 0 if(cf && cf->asn1_new) {
117 0 *pval = cf->asn1_new();
118 0 if(!*pval) goto memerr;
119 }
120 break;
121
122 case ASN1_ITYPE_PRIMITIVE:
123 713723 if(it->templates) {
124 0 if(!ASN1_template_new(pval, it->templates))
125 goto memerr;
126 } else {
127 713723 if(!ASN1_primitive_new(pval, it))
128 goto memerr;
129 }
130 break;
131
132 case ASN1_ITYPE_MSTRING:
133 401127 if(!ASN1_primitive_new(pval, it))
134 goto memerr;
135 break;
136
137 case ASN1_ITYPE_CHOICE:
138 14 if(asn1_cb) {
139 0 i = asn1_cb(ASN1_OP_NEW_PRE, pval, it);
140 0 if(!i) goto auxerr;
141 0 if(i==2) {
142 #ifdef CRYPTO_MDEBUG
143 if(it->sname) CRYPTO_pop_info();
144 #endif
145 0 return 1;
146 }
147 }
148 14 if(!combine) {
149 0 *pval = OPENSSL_malloc(it->size);
150 0 if(!*pval) goto memerr;
151 0 memset(*pval, 0, it->size);
152 }
153 14 asn1_set_choice_selector(pval, -1, it);
154 14 if(asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it))
155 goto auxerr;
156 break;
157
158 case ASN1_ITYPE_SEQUENCE:
159 610198 if(asn1_cb) {
160 67361 i = asn1_cb(ASN1_OP_NEW_PRE, pval, it);
161 67361 if(!i) goto auxerr;
162 67361 if(i==2) {
163 #ifdef CRYPTO_MDEBUG
164 if(it->sname) CRYPTO_pop_info();
165 #endif
166 8525 return 1;
167 }
168 }
169 601673 if(!combine) {
170 601673 *pval = OPENSSL_malloc(it->size);
171 601673 if(!*pval) goto memerr;
172 601673 memset(*pval, 0, it->size);
173 601673 asn1_do_lock(pval, 0, it);
174 601673 asn1_enc_init(pval, it);
175 }
176 2102302 for(i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
177 1500629 pseqval = asn1_get_field_ptr(pval, tt);
178 1500629 if(!ASN1_template_new(pseqval, tt)) goto memerr;
179 }
180 601673 if(asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it))
181 1773924 goto auxerr;
182 break;
183 }
184 #ifdef CRYPTO_MDEBUG
185 if(it->sname) CRYPTO_pop_info();
186 #endif
187 1773924 return 1;
188
189 0 memerr:
190 0 ASN1err(ASN1_F_ASN1_ITEM_NEW, ERR_R_MALLOC_FAILURE);
191 #ifdef CRYPTO_MDEBUG
192 if(it->sname) CRYPTO_pop_info();
193 #endif
194 0 return 0;
195
196 0 auxerr:
197 0 ASN1err(ASN1_F_ASN1_ITEM_NEW, ASN1_R_AUX_ERROR);
198 0 ASN1_item_ex_free(pval, it);
199 #ifdef CRYPTO_MDEBUG
200 if(it->sname) CRYPTO_pop_info();
201 #endif
202 0 return 0;
203
204 }
205
206 static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
207 223708 {
208 const ASN1_EXTERN_FUNCS *ef;
209
210 223708 switch(it->itype) {
211
212 case ASN1_ITYPE_EXTERN:
213 0 ef = it->funcs;
214 0 if(ef && ef->asn1_ex_clear)
215 0 ef->asn1_ex_clear(pval, it);
216 0 else *pval = NULL;
217 break;
218
219
220 case ASN1_ITYPE_PRIMITIVE:
221 223708 if(it->templates)
222 0 asn1_template_clear(pval, it->templates);
223 else
224 223708 asn1_primitive_clear(pval, it);
225 break;
226
227 case ASN1_ITYPE_MSTRING:
228 0 asn1_primitive_clear(pval, it);
229 0 break;
230
231 case ASN1_ITYPE_COMPAT:
232 case ASN1_ITYPE_CHOICE:
233 case ASN1_ITYPE_SEQUENCE:
234 0 *pval = NULL;
235 break;
236 }
237 }
238
239
240 int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
241 1500629 {
242 1500629 const ASN1_ITEM *it = ASN1_ITEM_ptr(tt->item);
243 int ret;
244 1500629 if(tt->flags & ASN1_TFLG_OPTIONAL) {
245 253112 asn1_template_clear(pval, tt);
246 253112 return 1;
247 }
248 /* If ANY DEFINED BY nothing to do */
249
250 1247517 if(tt->flags & ASN1_TFLG_ADB_MASK) {
251 0 *pval = NULL;
252 0 return 1;
253 }
254 #ifdef CRYPTO_MDEBUG
255 if(tt->field_name) CRYPTO_push_info(tt->field_name);
256 #endif
257 /* If SET OF or SEQUENCE OF, its a STACK */
258 1247517 if(tt->flags & ASN1_TFLG_SK_MASK) {
259 STACK_OF(ASN1_VALUE) *skval;
260 0 skval = sk_ASN1_VALUE_new_null();
261 0 if(!skval) {
262 0 ASN1err(ASN1_F_ASN1_TEMPLATE_NEW, ERR_R_MALLOC_FAILURE);
263 0 ret = 0;
264 0 goto done;
265 }
266 0 *pval = (ASN1_VALUE *)skval;
267 0 ret = 1;
268 0 goto done;
269 }
270 /* Otherwise pass it back to the item routine */
271 1247517 ret = asn1_item_ex_combine_new(pval, it, tt->flags & ASN1_TFLG_COMBINE);
272 1247517 done:
273 #ifdef CRYPTO_MDEBUG
274 if(it->sname) CRYPTO_pop_info();
275 #endif
276 1247517 return ret;
277 }
278
279 static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
280 253112 {
281 /* If ADB or STACK just NULL the field */
282 253112 if(tt->flags & (ASN1_TFLG_ADB_MASK|ASN1_TFLG_SK_MASK))
283 29404 *pval = NULL;
284 else
285 223708 asn1_item_clear(pval, ASN1_ITEM_ptr(tt->item));
286 }
287
288
289 /* NB: could probably combine most of the real XXX_new() behaviour and junk all the old
290 * functions.
291 */
292
293 int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
294 1114850 {
295 ASN1_TYPE *typ;
296 int utype;
297 const ASN1_PRIMITIVE_FUNCS *pf;
298 1114850 pf = it->funcs;
299 1114850 if(pf && pf->prim_new) return pf->prim_new(pval, it);
300 1114850 if(!it || (it->itype == ASN1_ITYPE_MSTRING)) utype = -1;
301 713723 else utype = it->utype;
302 1114850 switch(utype) {
303 case V_ASN1_OBJECT:
304 477459 *pval = (ASN1_VALUE *)OBJ_nid2obj(NID_undef);
305 477459 return 1;
306
307 case V_ASN1_BOOLEAN:
308 0 if (it)
309 0 *(ASN1_BOOLEAN *)pval = it->size;
310 else
311 0 *(ASN1_BOOLEAN *)pval = -1;
312 0 return 1;
313
314 case V_ASN1_NULL:
315 0 *pval = (ASN1_VALUE *)1;
316 0 return 1;
317
318 case V_ASN1_ANY:
319 101124 typ = OPENSSL_malloc(sizeof(ASN1_TYPE));
320 101124 if(!typ) return 0;
321 101124 typ->value.ptr = NULL;
322 101124 typ->type = -1;
323 101124 *pval = (ASN1_VALUE *)typ;
324 101124 break;
325
326 default:
327 536267 *pval = (ASN1_VALUE *)ASN1_STRING_type_new(utype);
328 break;
329 }
330 637391 if(*pval) return 1;
331 0 return 0;
332 }
333
334 void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
335 223708 {
336 int utype;
337 const ASN1_PRIMITIVE_FUNCS *pf;
338 223708 pf = it->funcs;
339 223708 if(pf) {
340 0 if(pf->prim_clear)
341 0 pf->prim_clear(pval, it);
342 else
343 0 *pval = NULL;
344 return;
345 }
346 223708 if(!it || (it->itype == ASN1_ITYPE_MSTRING)) utype = -1;
347 223708 else utype = it->utype;
348 223708 if(utype == V_ASN1_BOOLEAN)
349 44970 *(ASN1_BOOLEAN *)pval = it->size;
350 178738 else *pval = NULL;