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diff --git a/src/lib/libcrypto/x509/x509_vpm.c b/src/lib/libcrypto/x509/x509_vpm.c
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1/* x509_vpm.c */
2/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 2004.
4 */
5/* ====================================================================
6 * Copyright (c) 2004 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#include <stdio.h>
60
61#include "cryptlib.h"
62#include <openssl/crypto.h>
63#include <openssl/lhash.h>
64#include <openssl/buffer.h>
65#include <openssl/x509.h>
66#include <openssl/x509v3.h>
67
68/* X509_VERIFY_PARAM functions */
69
70static void x509_verify_param_zero(X509_VERIFY_PARAM *param)
71 {
72 if (!param)
73 return;
74 param->name = NULL;
75 param->purpose = 0;
76 param->trust = 0;
77 /*param->inh_flags = X509_VP_FLAG_DEFAULT;*/
78 param->inh_flags = 0;
79 param->flags = 0;
80 param->depth = -1;
81 if (param->policies)
82 {
83 sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
84 param->policies = NULL;
85 }
86 }
87
88X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void)
89 {
90 X509_VERIFY_PARAM *param;
91 param = OPENSSL_malloc(sizeof(X509_VERIFY_PARAM));
92 memset(param, 0, sizeof(X509_VERIFY_PARAM));
93 x509_verify_param_zero(param);
94 return param;
95 }
96
97void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param)
98 {
99 x509_verify_param_zero(param);
100 OPENSSL_free(param);
101 }
102
103/* This function determines how parameters are "inherited" from one structure
104 * to another. There are several different ways this can happen.
105 *
106 * 1. If a child structure needs to have its values initialized from a parent
107 * they are simply copied across. For example SSL_CTX copied to SSL.
108 * 2. If the structure should take on values only if they are currently unset.
109 * For example the values in an SSL structure will take appropriate value
110 * for SSL servers or clients but only if the application has not set new
111 * ones.
112 *
113 * The "inh_flags" field determines how this function behaves.
114 *
115 * Normally any values which are set in the default are not copied from the
116 * destination and verify flags are ORed together.
117 *
118 * If X509_VP_FLAG_DEFAULT is set then anything set in the source is copied
119 * to the destination. Effectively the values in "to" become default values
120 * which will be used only if nothing new is set in "from".
121 *
122 * If X509_VP_FLAG_OVERWRITE is set then all value are copied across whether
123 * they are set or not. Flags is still Ored though.
124 *
125 * If X509_VP_FLAG_RESET_FLAGS is set then the flags value is copied instead
126 * of ORed.
127 *
128 * If X509_VP_FLAG_LOCKED is set then no values are copied.
129 *
130 * If X509_VP_FLAG_ONCE is set then the current inh_flags setting is zeroed
131 * after the next call.
132 */
133
134/* Macro to test if a field should be copied from src to dest */
135
136#define test_x509_verify_param_copy(field, def) \
137 (to_overwrite || \
138 ((src->field != def) && (to_default || (dest->field == def))))
139
140/* Macro to test and copy a field if necessary */
141
142#define x509_verify_param_copy(field, def) \
143 if (test_x509_verify_param_copy(field, def)) \
144 dest->field = src->field
145
146
147int X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM *dest,
148 const X509_VERIFY_PARAM *src)
149 {
150 unsigned long inh_flags;
151 int to_default, to_overwrite;
152 if (!src)
153 return 1;
154 inh_flags = dest->inh_flags | src->inh_flags;
155
156 if (inh_flags & X509_VP_FLAG_ONCE)
157 dest->inh_flags = 0;
158
159 if (inh_flags & X509_VP_FLAG_LOCKED)
160 return 1;
161
162 if (inh_flags & X509_VP_FLAG_DEFAULT)
163 to_default = 1;
164 else
165 to_default = 0;
166
167 if (inh_flags & X509_VP_FLAG_OVERWRITE)
168 to_overwrite = 1;
169 else
170 to_overwrite = 0;
171
172 x509_verify_param_copy(purpose, 0);
173 x509_verify_param_copy(trust, 0);
174 x509_verify_param_copy(depth, -1);
175
176 /* If overwrite or check time not set, copy across */
177
178 if (to_overwrite || !(dest->flags & X509_V_FLAG_USE_CHECK_TIME))
179 {
180 dest->check_time = src->check_time;
181 dest->flags &= ~X509_V_FLAG_USE_CHECK_TIME;
182 /* Don't need to copy flag: that is done below */
183 }
184
185 if (inh_flags & X509_VP_FLAG_RESET_FLAGS)
186 dest->flags = 0;
187
188 dest->flags |= src->flags;
189
190 if (test_x509_verify_param_copy(policies, NULL))
191 {
192 if (!X509_VERIFY_PARAM_set1_policies(dest, src->policies))
193 return 0;
194 }
195
196 return 1;
197 }
198
199int X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM *to,
200 const X509_VERIFY_PARAM *from)
201 {
202 unsigned long save_flags = to->inh_flags;
203 int ret;
204 to->inh_flags |= X509_VP_FLAG_DEFAULT;
205 ret = X509_VERIFY_PARAM_inherit(to, from);
206 to->inh_flags = save_flags;
207 return ret;
208 }
209
210int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM *param, const char *name)
211 {
212 if (param->name)
213 OPENSSL_free(param->name);
214 param->name = BUF_strdup(name);
215 if (param->name)
216 return 1;
217 return 0;
218 }
219
220int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param, unsigned long flags)
221 {
222 param->flags |= flags;
223 if (flags & X509_V_FLAG_POLICY_MASK)
224 param->flags |= X509_V_FLAG_POLICY_CHECK;
225 return 1;
226 }
227
228int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param, unsigned long flags)
229 {
230 param->flags &= ~flags;
231 return 1;
232 }
233
234unsigned long X509_VERIFY_PARAM_get_flags(X509_VERIFY_PARAM *param)
235 {
236 return param->flags;
237 }
238
239int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param, int purpose)
240 {
241 return X509_PURPOSE_set(&param->purpose, purpose);
242 }
243
244int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param, int trust)
245 {
246 return X509_TRUST_set(&param->trust, trust);
247 }
248
249void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth)
250 {
251 param->depth = depth;
252 }
253
254void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param, time_t t)
255 {
256 param->check_time = t;
257 param->flags |= X509_V_FLAG_USE_CHECK_TIME;
258 }
259
260int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param, ASN1_OBJECT *policy)
261 {
262 if (!param->policies)
263 {
264 param->policies = sk_ASN1_OBJECT_new_null();
265 if (!param->policies)
266 return 0;
267 }
268 if (!sk_ASN1_OBJECT_push(param->policies, policy))
269 return 0;
270 return 1;
271 }
272
273int X509_VERIFY_PARAM_set1_policies(X509_VERIFY_PARAM *param,
274 STACK_OF(ASN1_OBJECT) *policies)
275 {
276 int i;
277 ASN1_OBJECT *oid, *doid;
278 if (!param)
279 return 0;
280 if (param->policies)
281 sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
282
283 if (!policies)
284 {
285 param->policies = NULL;
286 return 1;
287 }
288
289 param->policies = sk_ASN1_OBJECT_new_null();
290 if (!param->policies)
291 return 0;
292
293 for (i = 0; i < sk_ASN1_OBJECT_num(policies); i++)
294 {
295 oid = sk_ASN1_OBJECT_value(policies, i);
296 doid = OBJ_dup(oid);
297 if (!doid)
298 return 0;
299 if (!sk_ASN1_OBJECT_push(param->policies, doid))
300 {
301 ASN1_OBJECT_free(doid);
302 return 0;
303 }
304 }
305 param->flags |= X509_V_FLAG_POLICY_CHECK;
306 return 1;
307 }
308
309int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param)
310 {
311 return param->depth;
312 }
313
314/* Default verify parameters: these are used for various
315 * applications and can be overridden by the user specified table.
316 * NB: the 'name' field *must* be in alphabetical order because it
317 * will be searched using OBJ_search.
318 */
319
320static const X509_VERIFY_PARAM default_table[] = {
321 {
322 "default", /* X509 default parameters */
323 0, /* Check time */
324 0, /* internal flags */
325 0, /* flags */
326 0, /* purpose */
327 0, /* trust */
328 100, /* depth */
329 NULL /* policies */
330 },
331 {
332 "pkcs7", /* S/MIME sign parameters */
333 0, /* Check time */
334 0, /* internal flags */
335 0, /* flags */
336 X509_PURPOSE_SMIME_SIGN, /* purpose */
337 X509_TRUST_EMAIL, /* trust */
338 -1, /* depth */
339 NULL /* policies */
340 },
341 {
342 "smime_sign", /* S/MIME sign parameters */
343 0, /* Check time */
344 0, /* internal flags */
345 0, /* flags */
346 X509_PURPOSE_SMIME_SIGN, /* purpose */
347 X509_TRUST_EMAIL, /* trust */
348 -1, /* depth */
349 NULL /* policies */
350 },
351 {
352 "ssl_client", /* SSL/TLS client parameters */
353 0, /* Check time */
354 0, /* internal flags */
355 0, /* flags */
356 X509_PURPOSE_SSL_CLIENT, /* purpose */
357 X509_TRUST_SSL_CLIENT, /* trust */
358 -1, /* depth */
359 NULL /* policies */
360 },
361 {
362 "ssl_server", /* SSL/TLS server parameters */
363 0, /* Check time */
364 0, /* internal flags */
365 0, /* flags */
366 X509_PURPOSE_SSL_SERVER, /* purpose */
367 X509_TRUST_SSL_SERVER, /* trust */
368 -1, /* depth */
369 NULL /* policies */
370 }};
371
372static STACK_OF(X509_VERIFY_PARAM) *param_table = NULL;
373
374static int table_cmp(const X509_VERIFY_PARAM *a, const X509_VERIFY_PARAM *b)
375
376 {
377 return strcmp(a->name, b->name);
378 }
379
380DECLARE_OBJ_BSEARCH_CMP_FN(X509_VERIFY_PARAM, X509_VERIFY_PARAM,
381 table);
382IMPLEMENT_OBJ_BSEARCH_CMP_FN(X509_VERIFY_PARAM, X509_VERIFY_PARAM,
383 table);
384
385static int param_cmp(const X509_VERIFY_PARAM * const *a,
386 const X509_VERIFY_PARAM * const *b)
387 {
388 return strcmp((*a)->name, (*b)->name);
389 }
390
391int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param)
392 {
393 int idx;
394 X509_VERIFY_PARAM *ptmp;
395 if (!param_table)
396 {
397 param_table = sk_X509_VERIFY_PARAM_new(param_cmp);
398 if (!param_table)
399 return 0;
400 }
401 else
402 {
403 idx = sk_X509_VERIFY_PARAM_find(param_table, param);
404 if (idx != -1)
405 {
406 ptmp = sk_X509_VERIFY_PARAM_value(param_table, idx);
407 X509_VERIFY_PARAM_free(ptmp);
408 (void)sk_X509_VERIFY_PARAM_delete(param_table, idx);
409 }
410 }
411 if (!sk_X509_VERIFY_PARAM_push(param_table, param))
412 return 0;
413 return 1;
414 }
415
416const X509_VERIFY_PARAM *X509_VERIFY_PARAM_lookup(const char *name)
417 {
418 int idx;
419 X509_VERIFY_PARAM pm;
420
421 pm.name = (char *)name;
422 if (param_table)
423 {
424 idx = sk_X509_VERIFY_PARAM_find(param_table, &pm);
425 if (idx != -1)
426 return sk_X509_VERIFY_PARAM_value(param_table, idx);
427 }
428 return OBJ_bsearch_table(&pm, default_table,
429 sizeof(default_table)/sizeof(X509_VERIFY_PARAM));
430 }
431
432void X509_VERIFY_PARAM_table_cleanup(void)
433 {
434 if (param_table)
435 sk_X509_VERIFY_PARAM_pop_free(param_table,
436 X509_VERIFY_PARAM_free);
437 param_table = NULL;
438 }
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