GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/crypto/../../libssl/src/crypto/x509/x509_vpm.c Lines: 50 127 39.4 %
Date: 2016-12-06 Branches: 29 94 30.9 %

Line Branch Exec Source
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/* $OpenBSD: x509_vpm.c,v 1.11 2014/09/29 04:16:49 miod Exp $ */
2
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
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 * project 2004.
4
 */
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/* ====================================================================
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 * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 *
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in
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 *    the documentation and/or other materials provided with the
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 *    distribution.
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 *
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 * 3. All advertising materials mentioning features or use of this
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 *    software must display the following acknowledgment:
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 *    "This product includes software developed by the OpenSSL Project
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 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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 *
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 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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 *    endorse or promote products derived from this software without
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 *    prior written permission. For written permission, please contact
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 *    licensing@OpenSSL.org.
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 *
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 * 5. Products derived from this software may not be called "OpenSSL"
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 *    nor may "OpenSSL" appear in their names without prior written
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 *    permission of the OpenSSL Project.
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 *
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 * 6. Redistributions of any form whatsoever must retain the following
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 *    acknowledgment:
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 *    "This product includes software developed by the OpenSSL Project
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 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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 * OF THE POSSIBILITY OF SUCH DAMAGE.
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 * ====================================================================
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 *
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 * This product includes cryptographic software written by Eric Young
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 * (eay@cryptsoft.com).  This product includes software written by Tim
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 * Hudson (tjh@cryptsoft.com).
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 *
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 */
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59
#include <stdio.h>
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#include <string.h>
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62
#include <openssl/buffer.h>
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#include <openssl/crypto.h>
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#include <openssl/lhash.h>
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#include <openssl/x509.h>
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#include <openssl/x509v3.h>
67
68
/* X509_VERIFY_PARAM functions */
69
70
static void
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x509_verify_param_zero(X509_VERIFY_PARAM *param)
72
19
{
73
19
	if (!param)
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		return;
75
19
	param->name = NULL;
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19
	param->purpose = 0;
77
19
	param->trust = 0;
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	/*param->inh_flags = X509_VP_FLAG_DEFAULT;*/
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19
	param->inh_flags = 0;
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19
	param->flags = 0;
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19
	param->depth = -1;
82
19
	if (param->policies) {
83
		sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
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		param->policies = NULL;
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	}
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}
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88
X509_VERIFY_PARAM *
89
X509_VERIFY_PARAM_new(void)
90
13
{
91
	X509_VERIFY_PARAM *param;
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93
13
	param = calloc(1, sizeof(X509_VERIFY_PARAM));
94
13
	x509_verify_param_zero(param);
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13
	return param;
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}
97
98
void
99
X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param)
100
6
{
101
6
	x509_verify_param_zero(param);
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6
	free(param);
103
6
}
104
105
/* This function determines how parameters are "inherited" from one structure
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 * to another. There are several different ways this can happen.
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 *
108
 * 1. If a child structure needs to have its values initialized from a parent
109
 *    they are simply copied across. For example SSL_CTX copied to SSL.
110
 * 2. If the structure should take on values only if they are currently unset.
111
 *    For example the values in an SSL structure will take appropriate value
112
 *    for SSL servers or clients but only if the application has not set new
113
 *    ones.
114
 *
115
 * The "inh_flags" field determines how this function behaves.
116
 *
117
 * Normally any values which are set in the default are not copied from the
118
 * destination and verify flags are ORed together.
119
 *
120
 * If X509_VP_FLAG_DEFAULT is set then anything set in the source is copied
121
 * to the destination. Effectively the values in "to" become default values
122
 * which will be used only if nothing new is set in "from".
123
 *
124
 * If X509_VP_FLAG_OVERWRITE is set then all value are copied across whether
125
 * they are set or not. Flags is still Ored though.
126
 *
127
 * If X509_VP_FLAG_RESET_FLAGS is set then the flags value is copied instead
128
 * of ORed.
129
 *
130
 * If X509_VP_FLAG_LOCKED is set then no values are copied.
131
 *
132
 * If X509_VP_FLAG_ONCE is set then the current inh_flags setting is zeroed
133
 * after the next call.
134
 */
135
136
/* Macro to test if a field should be copied from src to dest */
137
138
#define test_x509_verify_param_copy(field, def) \
139
	(to_overwrite || \
140
		((src->field != def) && (to_default || (dest->field == def))))
141
142
/* Macro to test and copy a field if necessary */
143
144
#define x509_verify_param_copy(field, def) \
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	if (test_x509_verify_param_copy(field, def)) \
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		dest->field = src->field
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148
149
int
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X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM *dest, const X509_VERIFY_PARAM *src)
151
20
{
152
	unsigned long inh_flags;
153
	int to_default, to_overwrite;
154
155
20
	if (!src)
156
		return 1;
157
20
	inh_flags = dest->inh_flags | src->inh_flags;
158
159
20
	if (inh_flags & X509_VP_FLAG_ONCE)
160
		dest->inh_flags = 0;
161
162
20
	if (inh_flags & X509_VP_FLAG_LOCKED)
163
		return 1;
164
165
20
	if (inh_flags & X509_VP_FLAG_DEFAULT)
166
2
		to_default = 1;
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	else
168
18
		to_default = 0;
169
170
20
	if (inh_flags & X509_VP_FLAG_OVERWRITE)
171
		to_overwrite = 1;
172
	else
173
20
		to_overwrite = 0;
174
175


20
	x509_verify_param_copy(purpose, 0);
176


20
	x509_verify_param_copy(trust, 0);
177


20
	x509_verify_param_copy(depth, -1);
178
179
	/* If overwrite or check time not set, copy across */
180
181

20
	if (to_overwrite || !(dest->flags & X509_V_FLAG_USE_CHECK_TIME)) {
182
20
		dest->check_time = src->check_time;
183
20
		dest->flags &= ~X509_V_FLAG_USE_CHECK_TIME;
184
		/* Don't need to copy flag: that is done below */
185
	}
186
187
20
	if (inh_flags & X509_VP_FLAG_RESET_FLAGS)
188
		dest->flags = 0;
189
190
20
	dest->flags |= src->flags;
191
192


20
	if (test_x509_verify_param_copy(policies, NULL)) {
193
		if (!X509_VERIFY_PARAM_set1_policies(dest, src->policies))
194
			return 0;
195
	}
196
197
20
	return 1;
198
}
199
200
int
201
X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM *to, const X509_VERIFY_PARAM *from)
202
2
{
203
2
	unsigned long save_flags = to->inh_flags;
204
	int ret;
205
206
2
	to->inh_flags |= X509_VP_FLAG_DEFAULT;
207
2
	ret = X509_VERIFY_PARAM_inherit(to, from);
208
2
	to->inh_flags = save_flags;
209
2
	return ret;
210
}
211
212
int
213
X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM *param, const char *name)
214
{
215
	free(param->name);
216
	param->name = NULL;
217
	if (name == NULL)
218
		return 1;
219
	param->name = strdup(name);
220
	if (param->name)
221
		return 1;
222
	return 0;
223
}
224
225
int
226
X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param, unsigned long flags)
227
{
228
	param->flags |= flags;
229
	if (flags & X509_V_FLAG_POLICY_MASK)
230
		param->flags |= X509_V_FLAG_POLICY_CHECK;
231
	return 1;
232
}
233
234
int
235
X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param, unsigned long flags)
236
{
237
	param->flags &= ~flags;
238
	return 1;
239
}
240
241
unsigned long
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X509_VERIFY_PARAM_get_flags(X509_VERIFY_PARAM *param)
243
{
244
	return param->flags;
245
}
246
247
int
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X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param, int purpose)
249
{
250
	return X509_PURPOSE_set(&param->purpose, purpose);
251
}
252
253
int
254
X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param, int trust)
255
{
256
	return X509_TRUST_set(&param->trust, trust);
257
}
258
259
void
260
X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth)
261
{
262
	param->depth = depth;
263
}
264
265
void
266
X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param, time_t t)
267
{
268
	param->check_time = t;
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	param->flags |= X509_V_FLAG_USE_CHECK_TIME;
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}
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272
int
273
X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param, ASN1_OBJECT *policy)
274
{
275
	if (!param->policies) {
276
		param->policies = sk_ASN1_OBJECT_new_null();
277
		if (!param->policies)
278
			return 0;
279
	}
280
	if (!sk_ASN1_OBJECT_push(param->policies, policy))
281
		return 0;
282
	return 1;
283
}
284
285
int
286
X509_VERIFY_PARAM_set1_policies(X509_VERIFY_PARAM *param,
287
    STACK_OF(ASN1_OBJECT) *policies)
288
{
289
	int i;
290
	ASN1_OBJECT *oid, *doid;
291
292
	if (!param)
293
		return 0;
294
	if (param->policies)
295
		sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
296
297
	if (!policies) {
298
		param->policies = NULL;
299
		return 1;
300
	}
301
302
	param->policies = sk_ASN1_OBJECT_new_null();
303
	if (!param->policies)
304
		return 0;
305
306
	for (i = 0; i < sk_ASN1_OBJECT_num(policies); i++) {
307
		oid = sk_ASN1_OBJECT_value(policies, i);
308
		doid = OBJ_dup(oid);
309
		if (!doid)
310
			return 0;
311
		if (!sk_ASN1_OBJECT_push(param->policies, doid)) {
312
			ASN1_OBJECT_free(doid);
313
			return 0;
314
		}
315
	}
316
	param->flags |= X509_V_FLAG_POLICY_CHECK;
317
	return 1;
318
}
319
320
int
321
X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param)
322
{
323
	return param->depth;
324
}
325
326
/* Default verify parameters: these are used for various
327
 * applications and can be overridden by the user specified table.
328
 * NB: the 'name' field *must* be in alphabetical order because it
329
 * will be searched using OBJ_search.
330
 */
331
332
static const X509_VERIFY_PARAM default_table[] = {
333
	{
334
		"default",			/* X509 default parameters */
335
		0,				/* Check time */
336
		0,				/* internal flags */
337
		0,				/* flags */
338
		0,				/* purpose */
339
		0,				/* trust */
340
		100,				/* depth */
341
		NULL				/* policies */
342
	},
343
	{
344
		"pkcs7",			/* S/MIME sign parameters */
345
		0,				/* Check time */
346
		0,				/* internal flags */
347
		0,				/* flags */
348
		X509_PURPOSE_SMIME_SIGN,	/* purpose */
349
		X509_TRUST_EMAIL,		/* trust */
350
		-1,				/* depth */
351
		NULL				/* policies */
352
	},
353
	{
354
		"smime_sign",			/* S/MIME sign parameters */
355
		0,				/* Check time */
356
		0,				/* internal flags */
357
		0,				/* flags */
358
		X509_PURPOSE_SMIME_SIGN,	/* purpose */
359
		X509_TRUST_EMAIL,		/* trust */
360
		-1,				/* depth */
361
		NULL				/* policies */
362
	},
363
	{
364
		"ssl_client",			/* SSL/TLS client parameters */
365
		0,				/* Check time */
366
		0,				/* internal flags */
367
		0,				/* flags */
368
		X509_PURPOSE_SSL_CLIENT,	/* purpose */
369
		X509_TRUST_SSL_CLIENT,		/* trust */
370
		-1,				/* depth */
371
		NULL				/* policies */
372
	},
373
	{
374
		"ssl_server",			/* SSL/TLS server parameters */
375
		0,				/* Check time */
376
		0,				/* internal flags */
377
		0,				/* flags */
378
		X509_PURPOSE_SSL_SERVER,	/* purpose */
379
		X509_TRUST_SSL_SERVER,		/* trust */
380
		-1,				/* depth */
381
		NULL				/* policies */
382
	}
383
};
384
385
static STACK_OF(X509_VERIFY_PARAM) *param_table = NULL;
386
387
static int
388
table_cmp(const X509_VERIFY_PARAM *a, const X509_VERIFY_PARAM *b)
389
24
{
390
24
	return strcmp(a->name, b->name);
391
}
392
393
DECLARE_OBJ_BSEARCH_CMP_FN(X509_VERIFY_PARAM, X509_VERIFY_PARAM, table);
394
34
IMPLEMENT_OBJ_BSEARCH_CMP_FN(X509_VERIFY_PARAM, X509_VERIFY_PARAM, table);
395
396
static int
397
param_cmp(const X509_VERIFY_PARAM * const *a,
398
    const X509_VERIFY_PARAM * const *b)
399
{
400
	return strcmp((*a)->name, (*b)->name);
401
}
402
403
int
404
X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param)
405
{
406
	int idx;
407
	X509_VERIFY_PARAM *ptmp;
408
409
	if (!param_table) {
410
		param_table = sk_X509_VERIFY_PARAM_new(param_cmp);
411
		if (!param_table)
412
			return 0;
413
	} else {
414
		idx = sk_X509_VERIFY_PARAM_find(param_table, param);
415
		if (idx != -1) {
416
			ptmp = sk_X509_VERIFY_PARAM_value(param_table, idx);
417
			X509_VERIFY_PARAM_free(ptmp);
418
			(void)sk_X509_VERIFY_PARAM_delete(param_table, idx);
419
		}
420
	}
421
	if (!sk_X509_VERIFY_PARAM_push(param_table, param))
422
		return 0;
423
	return 1;
424
}
425
426
const X509_VERIFY_PARAM *
427
X509_VERIFY_PARAM_lookup(const char *name)
428
10
{
429
	int idx;
430
	X509_VERIFY_PARAM pm;
431
432
10
	pm.name = (char *)name;
433
10
	if (param_table) {
434
		idx = sk_X509_VERIFY_PARAM_find(param_table, &pm);
435
		if (idx != -1)
436
			return sk_X509_VERIFY_PARAM_value(param_table, idx);
437
	}
438
10
	return OBJ_bsearch_table(&pm, default_table,
439
	    sizeof(default_table)/sizeof(X509_VERIFY_PARAM));
440
}
441
442
void
443
X509_VERIFY_PARAM_table_cleanup(void)
444
{
445
	if (param_table)
446
		sk_X509_VERIFY_PARAM_pop_free(param_table,
447
		    X509_VERIFY_PARAM_free);
448
	param_table = NULL;
449
}