/src/openssl111/crypto/asn1/tasn_new.c
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1 | | /* |
2 | | * Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved. |
3 | | * |
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 |
8 | | */ |
9 | | |
10 | | #include <stddef.h> |
11 | | #include <openssl/asn1.h> |
12 | | #include <openssl/objects.h> |
13 | | #include <openssl/err.h> |
14 | | #include <openssl/asn1t.h> |
15 | | #include <string.h> |
16 | | #include "asn1_local.h" |
17 | | |
18 | | static int asn1_item_embed_new(ASN1_VALUE **pval, const ASN1_ITEM *it, |
19 | | int embed); |
20 | | static int asn1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it, |
21 | | int embed); |
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); |
26 | | |
27 | | ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it) |
28 | 2.33M | { |
29 | 2.33M | ASN1_VALUE *ret = NULL; |
30 | 2.33M | if (ASN1_item_ex_new(&ret, it) > 0) |
31 | 2.33M | return ret; |
32 | 0 | return NULL; |
33 | 2.33M | } |
34 | | |
35 | | /* Allocate an ASN1 structure */ |
36 | | |
37 | | int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it) |
38 | 5.70M | { |
39 | 5.70M | return asn1_item_embed_new(pval, it, 0); |
40 | 5.70M | } |
41 | | |
42 | | int asn1_item_embed_new(ASN1_VALUE **pval, const ASN1_ITEM *it, int embed) |
43 | 12.0M | { |
44 | 12.0M | const ASN1_TEMPLATE *tt = NULL; |
45 | 12.0M | const ASN1_EXTERN_FUNCS *ef; |
46 | 12.0M | const ASN1_AUX *aux = it->funcs; |
47 | 12.0M | ASN1_aux_cb *asn1_cb; |
48 | 12.0M | ASN1_VALUE **pseqval; |
49 | 12.0M | int i; |
50 | 12.0M | if (aux && aux->asn1_cb) |
51 | 742k | asn1_cb = aux->asn1_cb; |
52 | 11.3M | else |
53 | 11.3M | asn1_cb = 0; |
54 | | |
55 | | #ifndef OPENSSL_NO_CRYPTO_MDEBUG |
56 | | OPENSSL_mem_debug_push(it->sname ? it->sname : "asn1_item_embed_new"); |
57 | | #endif |
58 | | |
59 | 12.0M | switch (it->itype) { |
60 | | |
61 | 214k | case ASN1_ITYPE_EXTERN: |
62 | 214k | ef = it->funcs; |
63 | 214k | if (ef && ef->asn1_ex_new) { |
64 | 214k | if (!ef->asn1_ex_new(pval, it)) |
65 | 0 | goto memerr; |
66 | 214k | } |
67 | 214k | break; |
68 | | |
69 | 5.27M | case ASN1_ITYPE_PRIMITIVE: |
70 | 5.27M | if (it->templates) { |
71 | 0 | if (!asn1_template_new(pval, it->templates)) |
72 | 0 | goto memerr; |
73 | 5.27M | } else if (!asn1_primitive_new(pval, it, embed)) |
74 | 0 | goto memerr; |
75 | 5.27M | break; |
76 | | |
77 | 5.27M | case ASN1_ITYPE_MSTRING: |
78 | 1.40M | if (!asn1_primitive_new(pval, it, embed)) |
79 | 0 | goto memerr; |
80 | 1.40M | break; |
81 | | |
82 | 1.64M | case ASN1_ITYPE_CHOICE: |
83 | 1.64M | if (asn1_cb) { |
84 | 29.8k | i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL); |
85 | 29.8k | if (!i) |
86 | 0 | goto auxerr; |
87 | 29.8k | if (i == 2) { |
88 | | #ifndef OPENSSL_NO_CRYPTO_MDEBUG |
89 | | OPENSSL_mem_debug_pop(); |
90 | | #endif |
91 | 0 | return 1; |
92 | 0 | } |
93 | 29.8k | } |
94 | 1.64M | if (embed) { |
95 | 19.6k | memset(*pval, 0, it->size); |
96 | 1.62M | } else { |
97 | 1.62M | *pval = OPENSSL_zalloc(it->size); |
98 | 1.62M | if (*pval == NULL) |
99 | 0 | goto memerr; |
100 | 1.62M | } |
101 | 1.64M | asn1_set_choice_selector(pval, -1, it); |
102 | 1.64M | if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL)) |
103 | 0 | goto auxerr2; |
104 | 1.64M | break; |
105 | | |
106 | 1.64M | case ASN1_ITYPE_NDEF_SEQUENCE: |
107 | 3.53M | case ASN1_ITYPE_SEQUENCE: |
108 | 3.53M | if (asn1_cb) { |
109 | 486k | i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL); |
110 | 486k | if (!i) |
111 | 0 | goto auxerr; |
112 | 486k | if (i == 2) { |
113 | | #ifndef OPENSSL_NO_CRYPTO_MDEBUG |
114 | | OPENSSL_mem_debug_pop(); |
115 | | #endif |
116 | 97.6k | return 1; |
117 | 97.6k | } |
118 | 486k | } |
119 | 3.43M | if (embed) { |
120 | 399k | memset(*pval, 0, it->size); |
121 | 3.03M | } else { |
122 | 3.03M | *pval = OPENSSL_zalloc(it->size); |
123 | 3.03M | if (*pval == NULL) |
124 | 0 | goto memerr; |
125 | 3.03M | } |
126 | | /* 0 : init. lock */ |
127 | 3.43M | if (asn1_do_lock(pval, 0, it) < 0) { |
128 | 0 | if (!embed) { |
129 | 0 | OPENSSL_free(*pval); |
130 | 0 | *pval = NULL; |
131 | 0 | } |
132 | 0 | goto memerr; |
133 | 0 | } |
134 | 3.43M | asn1_enc_init(pval, it); |
135 | 12.6M | for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) { |
136 | 9.20M | pseqval = asn1_get_field_ptr(pval, tt); |
137 | 9.20M | if (!asn1_template_new(pseqval, tt)) |
138 | 0 | goto memerr2; |
139 | 9.20M | } |
140 | 3.43M | if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL)) |
141 | 0 | goto auxerr2; |
142 | 3.43M | break; |
143 | 12.0M | } |
144 | | #ifndef OPENSSL_NO_CRYPTO_MDEBUG |
145 | | OPENSSL_mem_debug_pop(); |
146 | | #endif |
147 | 11.9M | return 1; |
148 | | |
149 | 0 | memerr2: |
150 | 0 | asn1_item_embed_free(pval, it, embed); |
151 | 0 | memerr: |
152 | 0 | ASN1err(ASN1_F_ASN1_ITEM_EMBED_NEW, ERR_R_MALLOC_FAILURE); |
153 | | #ifndef OPENSSL_NO_CRYPTO_MDEBUG |
154 | | OPENSSL_mem_debug_pop(); |
155 | | #endif |
156 | 0 | return 0; |
157 | | |
158 | 0 | auxerr2: |
159 | 0 | asn1_item_embed_free(pval, it, embed); |
160 | 0 | auxerr: |
161 | 0 | ASN1err(ASN1_F_ASN1_ITEM_EMBED_NEW, ASN1_R_AUX_ERROR); |
162 | | #ifndef OPENSSL_NO_CRYPTO_MDEBUG |
163 | | OPENSSL_mem_debug_pop(); |
164 | | #endif |
165 | 0 | return 0; |
166 | |
|
167 | 0 | } |
168 | | |
169 | | static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it) |
170 | 2.00M | { |
171 | 2.00M | const ASN1_EXTERN_FUNCS *ef; |
172 | | |
173 | 2.00M | switch (it->itype) { |
174 | | |
175 | 0 | case ASN1_ITYPE_EXTERN: |
176 | 0 | ef = it->funcs; |
177 | 0 | if (ef && ef->asn1_ex_clear) |
178 | 0 | ef->asn1_ex_clear(pval, it); |
179 | 0 | else |
180 | 0 | *pval = NULL; |
181 | 0 | break; |
182 | | |
183 | 1.68M | case ASN1_ITYPE_PRIMITIVE: |
184 | 1.68M | if (it->templates) |
185 | 0 | asn1_template_clear(pval, it->templates); |
186 | 1.68M | else |
187 | 1.68M | asn1_primitive_clear(pval, it); |
188 | 1.68M | break; |
189 | | |
190 | 58.8k | case ASN1_ITYPE_MSTRING: |
191 | 58.8k | asn1_primitive_clear(pval, it); |
192 | 58.8k | break; |
193 | | |
194 | 102k | case ASN1_ITYPE_CHOICE: |
195 | 250k | case ASN1_ITYPE_SEQUENCE: |
196 | 260k | case ASN1_ITYPE_NDEF_SEQUENCE: |
197 | 260k | *pval = NULL; |
198 | 260k | break; |
199 | 2.00M | } |
200 | 2.00M | } |
201 | | |
202 | | static int asn1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt) |
203 | 9.20M | { |
204 | 9.20M | const ASN1_ITEM *it = ASN1_ITEM_ptr(tt->item); |
205 | 9.20M | int embed = tt->flags & ASN1_TFLG_EMBED; |
206 | 9.20M | ASN1_VALUE *tval; |
207 | 9.20M | int ret; |
208 | 9.20M | if (embed) { |
209 | 880k | tval = (ASN1_VALUE *)pval; |
210 | 880k | pval = &tval; |
211 | 880k | } |
212 | 9.20M | if (tt->flags & ASN1_TFLG_OPTIONAL) { |
213 | 2.53M | asn1_template_clear(pval, tt); |
214 | 2.53M | return 1; |
215 | 2.53M | } |
216 | | /* If ANY DEFINED BY nothing to do */ |
217 | | |
218 | 6.67M | if (tt->flags & ASN1_TFLG_ADB_MASK) { |
219 | 133k | *pval = NULL; |
220 | 133k | return 1; |
221 | 133k | } |
222 | | #ifndef OPENSSL_NO_CRYPTO_MDEBUG |
223 | | OPENSSL_mem_debug_push(tt->field_name |
224 | | ? tt->field_name : "asn1_template_new"); |
225 | | #endif |
226 | | /* If SET OF or SEQUENCE OF, its a STACK */ |
227 | 6.54M | if (tt->flags & ASN1_TFLG_SK_MASK) { |
228 | 166k | STACK_OF(ASN1_VALUE) *skval; |
229 | 166k | skval = sk_ASN1_VALUE_new_null(); |
230 | 166k | if (!skval) { |
231 | 0 | ASN1err(ASN1_F_ASN1_TEMPLATE_NEW, ERR_R_MALLOC_FAILURE); |
232 | 0 | ret = 0; |
233 | 0 | goto done; |
234 | 0 | } |
235 | 166k | *pval = (ASN1_VALUE *)skval; |
236 | 166k | ret = 1; |
237 | 166k | goto done; |
238 | 166k | } |
239 | | /* Otherwise pass it back to the item routine */ |
240 | 6.37M | ret = asn1_item_embed_new(pval, it, embed); |
241 | 6.54M | done: |
242 | | #ifndef OPENSSL_NO_CRYPTO_MDEBUG |
243 | | OPENSSL_mem_debug_pop(); |
244 | | #endif |
245 | 6.54M | return ret; |
246 | 6.37M | } |
247 | | |
248 | | static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt) |
249 | 2.53M | { |
250 | | /* If ADB or STACK just NULL the field */ |
251 | 2.53M | if (tt->flags & (ASN1_TFLG_ADB_MASK | ASN1_TFLG_SK_MASK)) |
252 | 527k | *pval = NULL; |
253 | 2.00M | else |
254 | 2.00M | asn1_item_clear(pval, ASN1_ITEM_ptr(tt->item)); |
255 | 2.53M | } |
256 | | |
257 | | /* |
258 | | * NB: could probably combine most of the real XXX_new() behaviour and junk |
259 | | * all the old functions. |
260 | | */ |
261 | | |
262 | | static int asn1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it, |
263 | | int embed) |
264 | 6.68M | { |
265 | 6.68M | ASN1_TYPE *typ; |
266 | 6.68M | ASN1_STRING *str; |
267 | 6.68M | int utype; |
268 | | |
269 | 6.68M | if (!it) |
270 | 0 | return 0; |
271 | | |
272 | 6.68M | if (it->funcs) { |
273 | 226k | const ASN1_PRIMITIVE_FUNCS *pf = it->funcs; |
274 | 226k | if (embed) { |
275 | 82.7k | if (pf->prim_clear) { |
276 | 82.7k | pf->prim_clear(pval, it); |
277 | 82.7k | return 1; |
278 | 82.7k | } |
279 | 143k | } else if (pf->prim_new) { |
280 | 143k | return pf->prim_new(pval, it); |
281 | 143k | } |
282 | 226k | } |
283 | | |
284 | 6.45M | if (it->itype == ASN1_ITYPE_MSTRING) |
285 | 1.40M | utype = -1; |
286 | 5.05M | else |
287 | 5.05M | utype = it->utype; |
288 | 6.45M | switch (utype) { |
289 | 2.11M | case V_ASN1_OBJECT: |
290 | 2.11M | *pval = (ASN1_VALUE *)OBJ_nid2obj(NID_undef); |
291 | 2.11M | return 1; |
292 | | |
293 | 0 | case V_ASN1_BOOLEAN: |
294 | 0 | *(ASN1_BOOLEAN *)pval = it->size; |
295 | 0 | return 1; |
296 | | |
297 | 0 | case V_ASN1_NULL: |
298 | 0 | *pval = (ASN1_VALUE *)1; |
299 | 0 | return 1; |
300 | | |
301 | 1.66M | case V_ASN1_ANY: |
302 | 1.66M | if ((typ = OPENSSL_malloc(sizeof(*typ))) == NULL) { |
303 | 0 | ASN1err(ASN1_F_ASN1_PRIMITIVE_NEW, ERR_R_MALLOC_FAILURE); |
304 | 0 | return 0; |
305 | 0 | } |
306 | 1.66M | typ->value.ptr = NULL; |
307 | 1.66M | typ->type = -1; |
308 | 1.66M | *pval = (ASN1_VALUE *)typ; |
309 | 1.66M | break; |
310 | | |
311 | 2.68M | default: |
312 | 2.68M | if (embed) { |
313 | 299k | str = *(ASN1_STRING **)pval; |
314 | 299k | memset(str, 0, sizeof(*str)); |
315 | 299k | str->type = utype; |
316 | 299k | str->flags = ASN1_STRING_FLAG_EMBED; |
317 | 2.38M | } else { |
318 | 2.38M | str = ASN1_STRING_type_new(utype); |
319 | 2.38M | *pval = (ASN1_VALUE *)str; |
320 | 2.38M | } |
321 | 2.68M | if (it->itype == ASN1_ITYPE_MSTRING && str) |
322 | 1.40M | str->flags |= ASN1_STRING_FLAG_MSTRING; |
323 | 2.68M | break; |
324 | 6.45M | } |
325 | 4.34M | if (*pval) |
326 | 4.34M | return 1; |
327 | 0 | return 0; |
328 | 4.34M | } |
329 | | |
330 | | static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it) |
331 | 1.74M | { |
332 | 1.74M | int utype; |
333 | 1.74M | if (it && it->funcs) { |
334 | 91.5k | const ASN1_PRIMITIVE_FUNCS *pf = it->funcs; |
335 | 91.5k | if (pf->prim_clear) |
336 | 78.7k | pf->prim_clear(pval, it); |
337 | 12.8k | else |
338 | 12.8k | *pval = NULL; |
339 | 91.5k | return; |
340 | 91.5k | } |
341 | 1.65M | if (!it || (it->itype == ASN1_ITYPE_MSTRING)) |
342 | 58.8k | utype = -1; |
343 | 1.59M | else |
344 | 1.59M | utype = it->utype; |
345 | 1.65M | if (utype == V_ASN1_BOOLEAN) |
346 | 189k | *(ASN1_BOOLEAN *)pval = it->size; |
347 | 1.46M | else |
348 | 1.46M | *pval = NULL; |
349 | 1.65M | } |