/src/openssl/crypto/asn1/tasn_new.c
Line | Count | Source (jump to first uncovered line) |
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_locl.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 | 1.21M | { |
29 | 1.21M | ASN1_VALUE *ret = NULL; |
30 | 1.21M | if (ASN1_item_ex_new(&ret, it) > 0) |
31 | 1.21M | return ret; |
32 | 0 | return NULL; |
33 | 0 | } |
34 | | |
35 | | /* Allocate an ASN1 structure */ |
36 | | |
37 | | int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it) |
38 | 1.73M | { |
39 | 1.73M | return asn1_item_embed_new(pval, it, 0); |
40 | 1.73M | } |
41 | | |
42 | | int asn1_item_embed_new(ASN1_VALUE **pval, const ASN1_ITEM *it, int embed) |
43 | 2.46M | { |
44 | 2.46M | const ASN1_TEMPLATE *tt = NULL; |
45 | 2.46M | const ASN1_EXTERN_FUNCS *ef; |
46 | 2.46M | const ASN1_AUX *aux = it->funcs; |
47 | 2.46M | ASN1_aux_cb *asn1_cb; |
48 | 2.46M | ASN1_VALUE **pseqval; |
49 | 2.46M | int i; |
50 | 2.46M | if (aux && aux->asn1_cb) |
51 | 753k | asn1_cb = aux->asn1_cb; |
52 | 1.70M | else |
53 | 1.70M | asn1_cb = 0; |
54 | 2.46M | |
55 | | #ifndef OPENSSL_NO_CRYPTO_MDEBUG |
56 | | OPENSSL_mem_debug_push(it->sname ? it->sname : "asn1_item_embed_new"); |
57 | | #endif |
58 | | |
59 | 2.46M | switch (it->itype) { |
60 | 2.46M | |
61 | 2.46M | case ASN1_ITYPE_EXTERN: |
62 | 0 | ef = it->funcs; |
63 | 0 | if (ef && ef->asn1_ex_new) { |
64 | 0 | if (!ef->asn1_ex_new(pval, it)) |
65 | 0 | goto memerr; |
66 | 0 | } |
67 | 0 | break; |
68 | 0 |
|
69 | 1.89M | case ASN1_ITYPE_PRIMITIVE: |
70 | 1.89M | if (it->templates) { |
71 | 0 | if (!asn1_template_new(pval, it->templates)) |
72 | 0 | goto memerr; |
73 | 1.89M | } else if (!asn1_primitive_new(pval, it, embed)) |
74 | 0 | goto memerr; |
75 | 1.89M | break; |
76 | 1.89M | |
77 | 1.89M | case ASN1_ITYPE_MSTRING: |
78 | 0 | if (!asn1_primitive_new(pval, it, embed)) |
79 | 0 | goto memerr; |
80 | 0 | break; |
81 | 0 |
|
82 | 0 | case ASN1_ITYPE_CHOICE: |
83 | 0 | if (asn1_cb) { |
84 | 0 | i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL); |
85 | 0 | if (!i) |
86 | 0 | goto auxerr; |
87 | 0 | if (i == 2) { |
88 | | #ifndef OPENSSL_NO_CRYPTO_MDEBUG |
89 | | OPENSSL_mem_debug_pop(); |
90 | | #endif |
91 | | return 1; |
92 | 0 | } |
93 | 0 | } |
94 | 0 | if (embed) { |
95 | 0 | memset(*pval, 0, it->size); |
96 | 0 | } else { |
97 | 0 | *pval = OPENSSL_zalloc(it->size); |
98 | 0 | if (*pval == NULL) |
99 | 0 | goto memerr; |
100 | 0 | } |
101 | 0 | asn1_set_choice_selector(pval, -1, it); |
102 | 0 | if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL)) |
103 | 0 | goto auxerr2; |
104 | 0 | break; |
105 | 0 |
|
106 | 571k | case ASN1_ITYPE_NDEF_SEQUENCE: |
107 | 571k | case ASN1_ITYPE_SEQUENCE: |
108 | 571k | if (asn1_cb) { |
109 | 313k | i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL); |
110 | 313k | if (!i) |
111 | 0 | goto auxerr; |
112 | 313k | if (i == 2) { |
113 | | #ifndef OPENSSL_NO_CRYPTO_MDEBUG |
114 | | OPENSSL_mem_debug_pop(); |
115 | | #endif |
116 | | return 1; |
117 | 253k | } |
118 | 318k | } |
119 | 318k | if (embed) { |
120 | 0 | memset(*pval, 0, it->size); |
121 | 318k | } else { |
122 | 318k | *pval = OPENSSL_zalloc(it->size); |
123 | 318k | if (*pval == NULL) |
124 | 318k | goto memerr; |
125 | 318k | } |
126 | 318k | /* 0 : init. lock */ |
127 | 318k | 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 | 318k | asn1_enc_init(pval, it); |
135 | 1.22M | for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) { |
136 | 902k | pseqval = asn1_get_field_ptr(pval, tt); |
137 | 902k | if (!asn1_template_new(pseqval, tt)) |
138 | 0 | goto memerr2; |
139 | 902k | } |
140 | 318k | if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL)) |
141 | 0 | goto auxerr2; |
142 | 318k | break; |
143 | 2.20M | } |
144 | | #ifndef OPENSSL_NO_CRYPTO_MDEBUG |
145 | | OPENSSL_mem_debug_pop(); |
146 | | #endif |
147 | 2.20M | return 1; |
148 | 0 | |
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 | | return 0; |
157 | 0 |
|
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 | | return 0; |
166 | 0 |
|
167 | 0 | } |
168 | | |
169 | | static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it) |
170 | 59.7k | { |
171 | 59.7k | const ASN1_EXTERN_FUNCS *ef; |
172 | 59.7k | |
173 | 59.7k | switch (it->itype) { |
174 | 59.7k | |
175 | 59.7k | 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 | 59.7k | |
183 | 59.7k | case ASN1_ITYPE_PRIMITIVE: |
184 | 59.7k | if (it->templates) |
185 | 0 | asn1_template_clear(pval, it->templates); |
186 | 59.7k | else |
187 | 59.7k | asn1_primitive_clear(pval, it); |
188 | 59.7k | break; |
189 | 59.7k | |
190 | 59.7k | case ASN1_ITYPE_MSTRING: |
191 | 0 | asn1_primitive_clear(pval, it); |
192 | 0 | break; |
193 | 59.7k | |
194 | 59.7k | case ASN1_ITYPE_CHOICE: |
195 | 0 | case ASN1_ITYPE_SEQUENCE: |
196 | 0 | case ASN1_ITYPE_NDEF_SEQUENCE: |
197 | 0 | *pval = NULL; |
198 | 0 | break; |
199 | 59.7k | } |
200 | 59.7k | } |
201 | | |
202 | | static int asn1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt) |
203 | 902k | { |
204 | 902k | const ASN1_ITEM *it = ASN1_ITEM_ptr(tt->item); |
205 | 902k | int embed = tt->flags & ASN1_TFLG_EMBED; |
206 | 902k | ASN1_VALUE *tval; |
207 | 902k | int ret; |
208 | 902k | if (embed) { |
209 | 0 | tval = (ASN1_VALUE *)pval; |
210 | 0 | pval = &tval; |
211 | 0 | } |
212 | 902k | if (tt->flags & ASN1_TFLG_OPTIONAL) { |
213 | 119k | asn1_template_clear(pval, tt); |
214 | 119k | return 1; |
215 | 119k | } |
216 | 783k | /* If ANY DEFINED BY nothing to do */ |
217 | 783k | |
218 | 783k | if (tt->flags & ASN1_TFLG_ADB_MASK) { |
219 | 0 | *pval = NULL; |
220 | 0 | return 1; |
221 | 0 | } |
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 | 783k | if (tt->flags & ASN1_TFLG_SK_MASK) { |
228 | 52.0k | STACK_OF(ASN1_VALUE) *skval; |
229 | 52.0k | skval = sk_ASN1_VALUE_new_null(); |
230 | 52.0k | 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 | 52.0k | *pval = (ASN1_VALUE *)skval; |
236 | 52.0k | ret = 1; |
237 | 52.0k | goto done; |
238 | 52.0k | } |
239 | 731k | /* Otherwise pass it back to the item routine */ |
240 | 731k | ret = asn1_item_embed_new(pval, it, embed); |
241 | 783k | done: |
242 | | #ifndef OPENSSL_NO_CRYPTO_MDEBUG |
243 | | OPENSSL_mem_debug_pop(); |
244 | | #endif |
245 | | return ret; |
246 | 731k | } |
247 | | |
248 | | static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt) |
249 | 119k | { |
250 | 119k | /* If ADB or STACK just NULL the field */ |
251 | 119k | if (tt->flags & (ASN1_TFLG_ADB_MASK | ASN1_TFLG_SK_MASK)) |
252 | 59.7k | *pval = NULL; |
253 | 119k | else |
254 | 119k | asn1_item_clear(pval, ASN1_ITEM_ptr(tt->item)); |
255 | 119k | } |
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 | 1.89M | { |
265 | 1.89M | ASN1_TYPE *typ; |
266 | 1.89M | ASN1_STRING *str; |
267 | 1.89M | int utype; |
268 | 1.89M | |
269 | 1.89M | if (!it) |
270 | 0 | return 0; |
271 | 1.89M | |
272 | 1.89M | if (it->funcs) { |
273 | 440k | const ASN1_PRIMITIVE_FUNCS *pf = it->funcs; |
274 | 440k | if (embed) { |
275 | 0 | if (pf->prim_clear) { |
276 | 0 | pf->prim_clear(pval, it); |
277 | 0 | return 1; |
278 | 0 | } |
279 | 440k | } else if (pf->prim_new) { |
280 | 440k | return pf->prim_new(pval, it); |
281 | 440k | } |
282 | 1.45M | } |
283 | 1.45M | |
284 | 1.45M | if (it->itype == ASN1_ITYPE_MSTRING) |
285 | 1.45M | utype = -1; |
286 | 1.45M | else |
287 | 1.45M | utype = it->utype; |
288 | 1.45M | switch (utype) { |
289 | 1.45M | case V_ASN1_OBJECT: |
290 | 111k | *pval = (ASN1_VALUE *)OBJ_nid2obj(NID_undef); |
291 | 111k | return 1; |
292 | 1.45M | |
293 | 1.45M | case V_ASN1_BOOLEAN: |
294 | 0 | *(ASN1_BOOLEAN *)pval = it->size; |
295 | 0 | return 1; |
296 | 1.45M | |
297 | 1.45M | case V_ASN1_NULL: |
298 | 0 | *pval = (ASN1_VALUE *)1; |
299 | 0 | return 1; |
300 | 1.45M | |
301 | 1.45M | case V_ASN1_ANY: |
302 | 1.21M | 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 | 1.21M | typ->value.ptr = NULL; |
307 | 1.21M | typ->type = -1; |
308 | 1.21M | *pval = (ASN1_VALUE *)typ; |
309 | 1.21M | break; |
310 | 1.21M | |
311 | 1.21M | default: |
312 | 119k | if (embed) { |
313 | 0 | str = *(ASN1_STRING **)pval; |
314 | 0 | memset(str, 0, sizeof(*str)); |
315 | 0 | str->type = utype; |
316 | 0 | str->flags = ASN1_STRING_FLAG_EMBED; |
317 | 119k | } else { |
318 | 119k | str = ASN1_STRING_type_new(utype); |
319 | 119k | *pval = (ASN1_VALUE *)str; |
320 | 119k | } |
321 | 119k | if (it->itype == ASN1_ITYPE_MSTRING && str) |
322 | 0 | str->flags |= ASN1_STRING_FLAG_MSTRING; |
323 | 119k | break; |
324 | 1.33M | } |
325 | 1.33M | if (*pval) |
326 | 1.33M | return 1; |
327 | 0 | return 0; |
328 | 0 | } |
329 | | |
330 | | static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it) |
331 | 59.7k | { |
332 | 59.7k | int utype; |
333 | 59.7k | if (it && it->funcs) { |
334 | 0 | const ASN1_PRIMITIVE_FUNCS *pf = it->funcs; |
335 | 0 | if (pf->prim_clear) |
336 | 0 | pf->prim_clear(pval, it); |
337 | 0 | else |
338 | 0 | *pval = NULL; |
339 | 0 | return; |
340 | 0 | } |
341 | 59.7k | if (!it || (it->itype == ASN1_ITYPE_MSTRING)) |
342 | 0 | utype = -1; |
343 | 59.7k | else |
344 | 59.7k | utype = it->utype; |
345 | 59.7k | if (utype == V_ASN1_BOOLEAN) |
346 | 59.7k | *(ASN1_BOOLEAN *)pval = it->size; |
347 | 59.7k | else |
348 | 59.7k | *pval = NULL; |
349 | 59.7k | } |