• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /* crypto/x509/x509_lu.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3  * All rights reserved.
4  *
5  * This package is an SSL implementation written
6  * by Eric Young (eay@cryptsoft.com).
7  * The implementation was written so as to conform with Netscapes SSL.
8  *
9  * This library is free for commercial and non-commercial use as long as
10  * the following conditions are aheared to.  The following conditions
11  * apply to all code found in this distribution, be it the RC4, RSA,
12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
13  * included with this distribution is covered by the same copyright terms
14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15  *
16  * Copyright remains Eric Young's, and as such any Copyright notices in
17  * the code are not to be removed.
18  * If this package is used in a product, Eric Young should be given attribution
19  * as the author of the parts of the library used.
20  * This can be in the form of a textual message at program startup or
21  * in documentation (online or textual) provided with the package.
22  *
23  * Redistribution and use in source and binary forms, with or without
24  * modification, are permitted provided that the following conditions
25  * are met:
26  * 1. Redistributions of source code must retain the copyright
27  *    notice, this list of conditions and the following disclaimer.
28  * 2. Redistributions in binary form must reproduce the above copyright
29  *    notice, this list of conditions and the following disclaimer in the
30  *    documentation and/or other materials provided with the distribution.
31  * 3. All advertising materials mentioning features or use of this software
32  *    must display the following acknowledgement:
33  *    "This product includes cryptographic software written by
34  *     Eric Young (eay@cryptsoft.com)"
35  *    The word 'cryptographic' can be left out if the rouines from the library
36  *    being used are not cryptographic related :-).
37  * 4. If you include any Windows specific code (or a derivative thereof) from
38  *    the apps directory (application code) you must include an acknowledgement:
39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40  *
41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51  * SUCH DAMAGE.
52  *
53  * The licence and distribution terms for any publically available version or
54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
55  * copied and put under another distribution licence
56  * [including the GNU Public Licence.] */
57 
58 #include <openssl/err.h>
59 #include <openssl/lhash.h>
60 #include <openssl/mem.h>
61 #include <openssl/x509.h>
62 #include <openssl/x509v3.h>
63 
64 
X509_LOOKUP_new(X509_LOOKUP_METHOD * method)65 X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method)
66 	{
67 	X509_LOOKUP *ret;
68 
69 	ret=(X509_LOOKUP *)OPENSSL_malloc(sizeof(X509_LOOKUP));
70 	if (ret == NULL) return NULL;
71 
72 	ret->init=0;
73 	ret->skip=0;
74 	ret->method=method;
75 	ret->method_data=NULL;
76 	ret->store_ctx=NULL;
77 	if ((method->new_item != NULL) && !method->new_item(ret))
78 		{
79 		OPENSSL_free(ret);
80 		return NULL;
81 		}
82 	return ret;
83 	}
84 
X509_LOOKUP_free(X509_LOOKUP * ctx)85 void X509_LOOKUP_free(X509_LOOKUP *ctx)
86 	{
87 	if (ctx == NULL) return;
88 	if (	(ctx->method != NULL) &&
89 		(ctx->method->free != NULL))
90 		(*ctx->method->free)(ctx);
91 	OPENSSL_free(ctx);
92 	}
93 
X509_LOOKUP_init(X509_LOOKUP * ctx)94 int X509_LOOKUP_init(X509_LOOKUP *ctx)
95 	{
96 	if (ctx->method == NULL) return 0;
97 	if (ctx->method->init != NULL)
98 		return ctx->method->init(ctx);
99 	else
100 		return 1;
101 	}
102 
X509_LOOKUP_shutdown(X509_LOOKUP * ctx)103 int X509_LOOKUP_shutdown(X509_LOOKUP *ctx)
104 	{
105 	if (ctx->method == NULL) return 0;
106 	if (ctx->method->shutdown != NULL)
107 		return ctx->method->shutdown(ctx);
108 	else
109 		return 1;
110 	}
111 
X509_LOOKUP_ctrl(X509_LOOKUP * ctx,int cmd,const char * argc,long argl,char ** ret)112 int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc, long argl,
113 	     char **ret)
114 	{
115 	if (ctx->method == NULL) return -1;
116 	if (ctx->method->ctrl != NULL)
117 		return ctx->method->ctrl(ctx,cmd,argc,argl,ret);
118 	else
119 		return 1;
120 	}
121 
X509_LOOKUP_by_subject(X509_LOOKUP * ctx,int type,X509_NAME * name,X509_OBJECT * ret)122 int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int type, X509_NAME *name,
123 	     X509_OBJECT *ret)
124 	{
125 	if ((ctx->method == NULL) || (ctx->method->get_by_subject == NULL))
126 		return X509_LU_FAIL;
127 	if (ctx->skip) return 0;
128 	return ctx->method->get_by_subject(ctx,type,name,ret);
129 	}
130 
X509_LOOKUP_by_issuer_serial(X509_LOOKUP * ctx,int type,X509_NAME * name,ASN1_INTEGER * serial,X509_OBJECT * ret)131 int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, int type, X509_NAME *name,
132 	     ASN1_INTEGER *serial, X509_OBJECT *ret)
133 	{
134 	if ((ctx->method == NULL) ||
135 		(ctx->method->get_by_issuer_serial == NULL))
136 		return X509_LU_FAIL;
137 	return ctx->method->get_by_issuer_serial(ctx,type,name,serial,ret);
138 	}
139 
X509_LOOKUP_by_fingerprint(X509_LOOKUP * ctx,int type,unsigned char * bytes,int len,X509_OBJECT * ret)140 int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, int type,
141 	     unsigned char *bytes, int len, X509_OBJECT *ret)
142 	{
143 	if ((ctx->method == NULL) || (ctx->method->get_by_fingerprint == NULL))
144 		return X509_LU_FAIL;
145 	return ctx->method->get_by_fingerprint(ctx,type,bytes,len,ret);
146 	}
147 
X509_LOOKUP_by_alias(X509_LOOKUP * ctx,int type,char * str,int len,X509_OBJECT * ret)148 int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, int type, char *str, int len,
149 	     X509_OBJECT *ret)
150 	{
151 	if ((ctx->method == NULL) || (ctx->method->get_by_alias == NULL))
152 		return X509_LU_FAIL;
153 	return ctx->method->get_by_alias(ctx,type,str,len,ret);
154 	}
155 
156 
x509_object_cmp(const X509_OBJECT ** a,const X509_OBJECT ** b)157 static int x509_object_cmp(const X509_OBJECT **a, const X509_OBJECT **b)
158   	{
159  	int ret;
160 
161  	ret=((*a)->type - (*b)->type);
162  	if (ret) return ret;
163  	switch ((*a)->type)
164  		{
165  	case X509_LU_X509:
166  		ret=X509_subject_name_cmp((*a)->data.x509,(*b)->data.x509);
167  		break;
168  	case X509_LU_CRL:
169  		ret=X509_CRL_cmp((*a)->data.crl,(*b)->data.crl);
170  		break;
171 	default:
172 		/* abort(); */
173 		return 0;
174 		}
175 	return ret;
176 	}
177 
X509_STORE_new(void)178 X509_STORE *X509_STORE_new(void)
179 	{
180 	X509_STORE *ret;
181 
182 	if ((ret=(X509_STORE *)OPENSSL_malloc(sizeof(X509_STORE))) == NULL)
183 		return NULL;
184 	memset(ret, 0, sizeof(*ret));
185 	ret->objs = sk_X509_OBJECT_new(x509_object_cmp);
186 	ret->cache = 1;
187 	ret->get_cert_methods = sk_X509_LOOKUP_new_null();
188 
189 	if ((ret->param = X509_VERIFY_PARAM_new()) == NULL)
190 		goto err;
191 
192 	if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509_STORE, ret, &ret->ex_data))
193 		goto err;
194 
195 	ret->references = 1;
196 	return ret;
197 err:
198 	if (ret)
199 		{
200 		if (ret->param)
201 			X509_VERIFY_PARAM_free(ret->param);
202 		if (ret->get_cert_methods)
203 			sk_X509_LOOKUP_free(ret->get_cert_methods);
204 		if (ret->objs)
205 			sk_X509_OBJECT_free(ret->objs);
206 		OPENSSL_free(ret);
207 		}
208 	return NULL;
209 	}
210 
cleanup(X509_OBJECT * a)211 static void cleanup(X509_OBJECT *a)
212 	{
213 	if (a->type == X509_LU_X509)
214 		{
215 		X509_free(a->data.x509);
216 		}
217 	else if (a->type == X509_LU_CRL)
218 		{
219 		X509_CRL_free(a->data.crl);
220 		}
221 	else
222 		{
223 		/* abort(); */
224 		}
225 
226 	OPENSSL_free(a);
227 	}
228 
X509_STORE_free(X509_STORE * vfy)229 void X509_STORE_free(X509_STORE *vfy)
230 	{
231 	int i;
232 	size_t j;
233 	STACK_OF(X509_LOOKUP) *sk;
234 	X509_LOOKUP *lu;
235 
236 	if (vfy == NULL)
237 	    return;
238 
239 	i=CRYPTO_add(&vfy->references,-1,CRYPTO_LOCK_X509_STORE);
240 #ifdef REF_PRINT
241 	REF_PRINT("X509_STORE",vfy);
242 #endif
243 	if (i > 0) return;
244 #ifdef REF_CHECK
245 	if (i < 0)
246 		{
247 		fprintf(stderr,"X509_STORE_free, bad reference count\n");
248 		abort(); /* ok */
249 		}
250 #endif
251 
252 	sk=vfy->get_cert_methods;
253 	for (j=0; j<sk_X509_LOOKUP_num(sk); j++)
254 		{
255 		lu=sk_X509_LOOKUP_value(sk,j);
256 		X509_LOOKUP_shutdown(lu);
257 		X509_LOOKUP_free(lu);
258 		}
259 	sk_X509_LOOKUP_free(sk);
260 	sk_X509_OBJECT_pop_free(vfy->objs, cleanup);
261 
262 	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509_STORE, vfy, &vfy->ex_data);
263 	if (vfy->param)
264 		X509_VERIFY_PARAM_free(vfy->param);
265 	OPENSSL_free(vfy);
266 	}
267 
X509_STORE_add_lookup(X509_STORE * v,X509_LOOKUP_METHOD * m)268 X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v, X509_LOOKUP_METHOD *m)
269 	{
270 	size_t i;
271 	STACK_OF(X509_LOOKUP) *sk;
272 	X509_LOOKUP *lu;
273 
274 	sk=v->get_cert_methods;
275 	for (i=0; i<sk_X509_LOOKUP_num(sk); i++)
276 		{
277 		lu=sk_X509_LOOKUP_value(sk,i);
278 		if (m == lu->method)
279 			{
280 			return lu;
281 			}
282 		}
283 	/* a new one */
284 	lu=X509_LOOKUP_new(m);
285 	if (lu == NULL)
286 		return NULL;
287 	else
288 		{
289 		lu->store_ctx=v;
290 		if (sk_X509_LOOKUP_push(v->get_cert_methods,lu))
291 			return lu;
292 		else
293 			{
294 			X509_LOOKUP_free(lu);
295 			return NULL;
296 			}
297 		}
298 	}
299 
X509_STORE_get_by_subject(X509_STORE_CTX * vs,int type,X509_NAME * name,X509_OBJECT * ret)300 int X509_STORE_get_by_subject(X509_STORE_CTX *vs, int type, X509_NAME *name,
301 	     X509_OBJECT *ret)
302 	{
303 	X509_STORE *ctx=vs->ctx;
304 	X509_LOOKUP *lu;
305 	X509_OBJECT stmp,*tmp;
306 	int i,j;
307 
308 	CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
309 	tmp=X509_OBJECT_retrieve_by_subject(ctx->objs,type,name);
310 	CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
311 
312 	if (tmp == NULL || type == X509_LU_CRL)
313 		{
314 		for (i=vs->current_method; i<(int)sk_X509_LOOKUP_num(ctx->get_cert_methods); i++)
315 			{
316 			lu=sk_X509_LOOKUP_value(ctx->get_cert_methods,i);
317 			j=X509_LOOKUP_by_subject(lu,type,name,&stmp);
318 			if (j < 0)
319 				{
320 				vs->current_method=j;
321 				return j;
322 				}
323 			else if (j)
324 				{
325 				tmp= &stmp;
326 				break;
327 				}
328 			}
329 		vs->current_method=0;
330 		if (tmp == NULL)
331 			return 0;
332 		}
333 
334 /*	if (ret->data.ptr != NULL)
335 		X509_OBJECT_free_contents(ret); */
336 
337 	ret->type=tmp->type;
338 	ret->data.ptr=tmp->data.ptr;
339 
340 	X509_OBJECT_up_ref_count(ret);
341 
342 	return 1;
343 	}
344 
X509_STORE_add_cert(X509_STORE * ctx,X509 * x)345 int X509_STORE_add_cert(X509_STORE *ctx, X509 *x)
346 	{
347 	X509_OBJECT *obj;
348 	int ret=1;
349 
350 	if (x == NULL) return 0;
351 	obj=(X509_OBJECT *)OPENSSL_malloc(sizeof(X509_OBJECT));
352 	if (obj == NULL)
353 		{
354 		OPENSSL_PUT_ERROR(X509, X509_STORE_add_cert, ERR_R_MALLOC_FAILURE);
355 		return 0;
356 		}
357 	obj->type=X509_LU_X509;
358 	obj->data.x509=x;
359 
360 	CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
361 
362 	X509_OBJECT_up_ref_count(obj);
363 
364 	if (X509_OBJECT_retrieve_match(ctx->objs, obj))
365 		{
366 		X509_OBJECT_free_contents(obj);
367 		OPENSSL_free(obj);
368 		OPENSSL_PUT_ERROR(X509, X509_STORE_add_cert, X509_R_CERT_ALREADY_IN_HASH_TABLE);
369 		ret=0;
370 		}
371 	else sk_X509_OBJECT_push(ctx->objs, obj);
372 
373 	CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
374 
375 	return ret;
376 	}
377 
X509_STORE_add_crl(X509_STORE * ctx,X509_CRL * x)378 int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x)
379 	{
380 	X509_OBJECT *obj;
381 	int ret=1;
382 
383 	if (x == NULL) return 0;
384 	obj=(X509_OBJECT *)OPENSSL_malloc(sizeof(X509_OBJECT));
385 	if (obj == NULL)
386 		{
387 		OPENSSL_PUT_ERROR(X509, X509_STORE_add_crl, ERR_R_MALLOC_FAILURE);
388 		return 0;
389 		}
390 	obj->type=X509_LU_CRL;
391 	obj->data.crl=x;
392 
393 	CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
394 
395 	X509_OBJECT_up_ref_count(obj);
396 
397 	if (X509_OBJECT_retrieve_match(ctx->objs, obj))
398 		{
399 		X509_OBJECT_free_contents(obj);
400 		OPENSSL_free(obj);
401 		OPENSSL_PUT_ERROR(X509, X509_STORE_add_crl, X509_R_CERT_ALREADY_IN_HASH_TABLE);
402 		ret=0;
403 		}
404 	else sk_X509_OBJECT_push(ctx->objs, obj);
405 
406 	CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
407 
408 	return ret;
409 	}
410 
X509_OBJECT_up_ref_count(X509_OBJECT * a)411 void X509_OBJECT_up_ref_count(X509_OBJECT *a)
412 	{
413 	switch (a->type)
414 		{
415 	case X509_LU_X509:
416 		X509_up_ref(a->data.x509);
417 		break;
418 	case X509_LU_CRL:
419 		CRYPTO_add(&a->data.crl->references,1,CRYPTO_LOCK_X509_CRL);
420 		break;
421 		}
422 	}
423 
X509_OBJECT_free_contents(X509_OBJECT * a)424 void X509_OBJECT_free_contents(X509_OBJECT *a)
425 	{
426 	switch (a->type)
427 		{
428 	case X509_LU_X509:
429 		X509_free(a->data.x509);
430 		break;
431 	case X509_LU_CRL:
432 		X509_CRL_free(a->data.crl);
433 		break;
434 		}
435 	}
436 
x509_object_idx_cnt(STACK_OF (X509_OBJECT)* h,int type,X509_NAME * name,int * pnmatch)437 static int x509_object_idx_cnt(STACK_OF(X509_OBJECT) *h, int type,
438 	     X509_NAME *name, int *pnmatch)
439 	{
440 	X509_OBJECT stmp;
441 	X509 x509_s;
442 	X509_CINF cinf_s;
443 	X509_CRL crl_s;
444 	X509_CRL_INFO crl_info_s;
445 	size_t idx;
446 
447 	stmp.type=type;
448 	switch (type)
449 		{
450 	case X509_LU_X509:
451 		stmp.data.x509= &x509_s;
452 		x509_s.cert_info= &cinf_s;
453 		cinf_s.subject=name;
454 		break;
455 	case X509_LU_CRL:
456 		stmp.data.crl= &crl_s;
457 		crl_s.crl= &crl_info_s;
458 		crl_info_s.issuer=name;
459 		break;
460 	default:
461 		/* abort(); */
462 		return -1;
463 		}
464 
465 	idx = -1;
466 	if (sk_X509_OBJECT_find(h, &idx, &stmp) && pnmatch)
467 		{
468 		int tidx;
469 		const X509_OBJECT *tobj, *pstmp;
470 		*pnmatch = 1;
471 		pstmp = &stmp;
472 		for (tidx = idx + 1; tidx < (int)sk_X509_OBJECT_num(h); tidx++)
473 			{
474 			tobj = sk_X509_OBJECT_value(h, tidx);
475 			if (x509_object_cmp(&tobj, &pstmp))
476 				break;
477 			(*pnmatch)++;
478 			}
479 		}
480 
481 	return idx;
482 	}
483 
484 
X509_OBJECT_idx_by_subject(STACK_OF (X509_OBJECT)* h,int type,X509_NAME * name)485 int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, int type,
486 	     X509_NAME *name)
487 	{
488 	return x509_object_idx_cnt(h, type, name, NULL);
489 	}
490 
X509_OBJECT_retrieve_by_subject(STACK_OF (X509_OBJECT)* h,int type,X509_NAME * name)491 X509_OBJECT *X509_OBJECT_retrieve_by_subject(STACK_OF(X509_OBJECT) *h, int type,
492 	     X509_NAME *name)
493 	{
494 	int idx;
495 	idx = X509_OBJECT_idx_by_subject(h, type, name);
496 	if (idx==-1) return NULL;
497 	return sk_X509_OBJECT_value(h, idx);
498 	}
499 
STACK_OF(X509)500 STACK_OF(X509)* X509_STORE_get1_certs(X509_STORE_CTX *ctx, X509_NAME *nm)
501 	{
502 	int i, idx, cnt;
503 	STACK_OF(X509) *sk;
504 	X509 *x;
505 	X509_OBJECT *obj;
506 	sk = sk_X509_new_null();
507 	CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
508 	idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
509 	if (idx < 0)
510 		{
511 		/* Nothing found in cache: do lookup to possibly add new
512 		 * objects to cache
513 		 */
514 		X509_OBJECT xobj;
515 		CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
516 		if (!X509_STORE_get_by_subject(ctx, X509_LU_X509, nm, &xobj))
517 			{
518 			sk_X509_free(sk);
519 			return NULL;
520 			}
521 		X509_OBJECT_free_contents(&xobj);
522 		CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
523 		idx = x509_object_idx_cnt(ctx->ctx->objs,X509_LU_X509,nm, &cnt);
524 		if (idx < 0)
525 			{
526 			CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
527 			sk_X509_free(sk);
528 			return NULL;
529 			}
530 		}
531 	for (i = 0; i < cnt; i++, idx++)
532 		{
533 		obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
534 		x = obj->data.x509;
535 		if (!sk_X509_push(sk, X509_up_ref(x)))
536 			{
537 			CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
538 			X509_free(x);
539 			sk_X509_pop_free(sk, X509_free);
540 			return NULL;
541 			}
542 		}
543 	CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
544 	return sk;
545 
546 	}
547 
STACK_OF(X509_CRL)548 STACK_OF(X509_CRL)* X509_STORE_get1_crls(X509_STORE_CTX *ctx, X509_NAME *nm)
549 	{
550 	int i, idx, cnt;
551 	STACK_OF(X509_CRL) *sk;
552 	X509_CRL *x;
553 	X509_OBJECT *obj, xobj;
554 	sk = sk_X509_CRL_new_null();
555 	CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
556 	/* Check cache first */
557 	idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_CRL, nm, &cnt);
558 
559 	/* Always do lookup to possibly add new CRLs to cache
560 	 */
561 	CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
562 	if (!X509_STORE_get_by_subject(ctx, X509_LU_CRL, nm, &xobj))
563 		{
564 		sk_X509_CRL_free(sk);
565 		return NULL;
566 		}
567 	X509_OBJECT_free_contents(&xobj);
568 	CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
569 	idx = x509_object_idx_cnt(ctx->ctx->objs,X509_LU_CRL, nm, &cnt);
570 	if (idx < 0)
571 		{
572 		CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
573 		sk_X509_CRL_free(sk);
574 		return NULL;
575 		}
576 
577 	for (i = 0; i < cnt; i++, idx++)
578 		{
579 		obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
580 		x = obj->data.crl;
581 		CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509_CRL);
582 		if (!sk_X509_CRL_push(sk, x))
583 			{
584 			CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
585 			X509_CRL_free(x);
586 			sk_X509_CRL_pop_free(sk, X509_CRL_free);
587 			return NULL;
588 			}
589 		}
590 	CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
591 	return sk;
592 	}
593 
X509_OBJECT_retrieve_match(STACK_OF (X509_OBJECT)* h,X509_OBJECT * x)594 X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h, X509_OBJECT *x)
595 	{
596 	size_t idx, i;
597 	X509_OBJECT *obj;
598 
599 	if (!sk_X509_OBJECT_find(h, &idx, x)) {
600 		return NULL;
601 	}
602 	if ((x->type != X509_LU_X509) && (x->type != X509_LU_CRL))
603 		return sk_X509_OBJECT_value(h, idx);
604 	for (i = idx; i < sk_X509_OBJECT_num(h); i++)
605 		{
606 		obj = sk_X509_OBJECT_value(h, i);
607 		if (x509_object_cmp((const X509_OBJECT **)&obj, (const X509_OBJECT **)&x))
608 			return NULL;
609 		if (x->type == X509_LU_X509)
610 			{
611 			if (!X509_cmp(obj->data.x509, x->data.x509))
612 				return obj;
613 			}
614 		else if (x->type == X509_LU_CRL)
615 			{
616 			if (!X509_CRL_match(obj->data.crl, x->data.crl))
617 				return obj;
618 			}
619 		else
620 			return obj;
621 		}
622 	return NULL;
623 	}
624 
625 
626 /* Try to get issuer certificate from store. Due to limitations
627  * of the API this can only retrieve a single certificate matching
628  * a given subject name. However it will fill the cache with all
629  * matching certificates, so we can examine the cache for all
630  * matches.
631  *
632  * Return values are:
633  *  1 lookup successful.
634  *  0 certificate not found.
635  * -1 some other error.
636  */
X509_STORE_CTX_get1_issuer(X509 ** issuer,X509_STORE_CTX * ctx,X509 * x)637 int X509_STORE_CTX_get1_issuer(X509 **issuer, X509_STORE_CTX *ctx, X509 *x)
638 	{
639 	X509_NAME *xn;
640 	X509_OBJECT obj, *pobj;
641 	int ok, idx, ret;
642 	size_t i;
643 	xn=X509_get_issuer_name(x);
644 	ok=X509_STORE_get_by_subject(ctx,X509_LU_X509,xn,&obj);
645 	if (ok != X509_LU_X509)
646 		{
647 		if (ok == X509_LU_RETRY)
648 			{
649 			X509_OBJECT_free_contents(&obj);
650 			OPENSSL_PUT_ERROR(X509, X509_STORE_CTX_get1_issuer, X509_R_SHOULD_RETRY);
651 			return -1;
652 			}
653 		else if (ok != X509_LU_FAIL)
654 			{
655 			X509_OBJECT_free_contents(&obj);
656 			/* not good :-(, break anyway */
657 			return -1;
658 			}
659 		return 0;
660 		}
661 	/* If certificate matches all OK */
662 	if (ctx->check_issued(ctx, x, obj.data.x509))
663 		{
664 		*issuer = obj.data.x509;
665 		return 1;
666 		}
667 	X509_OBJECT_free_contents(&obj);
668 
669 	/* Else find index of first cert accepted by 'check_issued' */
670 	ret = 0;
671 	CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
672 	idx = X509_OBJECT_idx_by_subject(ctx->ctx->objs, X509_LU_X509, xn);
673 	if (idx != -1) /* should be true as we've had at least one match */
674 		{
675 		/* Look through all matching certs for suitable issuer */
676 		for (i = idx; i < sk_X509_OBJECT_num(ctx->ctx->objs); i++)
677 			{
678 			pobj = sk_X509_OBJECT_value(ctx->ctx->objs, i);
679 			/* See if we've run past the matches */
680 			if (pobj->type != X509_LU_X509)
681 				break;
682 			if (X509_NAME_cmp(xn, X509_get_subject_name(pobj->data.x509)))
683 				break;
684 			if (ctx->check_issued(ctx, x, pobj->data.x509))
685 				{
686 				*issuer = pobj->data.x509;
687 				X509_OBJECT_up_ref_count(pobj);
688 				ret = 1;
689 				break;
690 				}
691 			}
692 		}
693 	CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
694 	return ret;
695 	}
696 
X509_STORE_set_flags(X509_STORE * ctx,unsigned long flags)697 int X509_STORE_set_flags(X509_STORE *ctx, unsigned long flags)
698 	{
699 	return X509_VERIFY_PARAM_set_flags(ctx->param, flags);
700 	}
701 
X509_STORE_set_depth(X509_STORE * ctx,int depth)702 int X509_STORE_set_depth(X509_STORE *ctx, int depth)
703 	{
704 	X509_VERIFY_PARAM_set_depth(ctx->param, depth);
705 	return 1;
706 	}
707 
X509_STORE_set_purpose(X509_STORE * ctx,int purpose)708 int X509_STORE_set_purpose(X509_STORE *ctx, int purpose)
709 	{
710 	return X509_VERIFY_PARAM_set_purpose(ctx->param, purpose);
711 	}
712 
X509_STORE_set_trust(X509_STORE * ctx,int trust)713 int X509_STORE_set_trust(X509_STORE *ctx, int trust)
714 	{
715 	return X509_VERIFY_PARAM_set_trust(ctx->param, trust);
716 	}
717 
X509_STORE_set1_param(X509_STORE * ctx,X509_VERIFY_PARAM * param)718 int X509_STORE_set1_param(X509_STORE *ctx, X509_VERIFY_PARAM *param)
719 	{
720 	return X509_VERIFY_PARAM_set1(ctx->param, param);
721 	}
722 
X509_STORE_set_verify_cb(X509_STORE * ctx,int (* verify_cb)(int,X509_STORE_CTX *))723 void X509_STORE_set_verify_cb(X509_STORE *ctx,
724 				  int (*verify_cb)(int, X509_STORE_CTX *))
725 	{
726 	ctx->verify_cb = verify_cb;
727 	}
728 
X509_STORE_set_lookup_crls_cb(X509_STORE * ctx,STACK_OF (X509_CRL)* (* cb)(X509_STORE_CTX * ctx,X509_NAME * nm))729 void X509_STORE_set_lookup_crls_cb(X509_STORE *ctx,
730 		STACK_OF(X509_CRL)* (*cb)(X509_STORE_CTX *ctx, X509_NAME *nm))
731 	{
732 	ctx->lookup_crls = cb;
733 	}
734 
X509_STORE_CTX_get0_store(X509_STORE_CTX * ctx)735 X509_STORE *X509_STORE_CTX_get0_store(X509_STORE_CTX *ctx)
736 	{
737 	return ctx->ctx;
738 	}
739