Don't ignore (\!) reference count in X509_STORE_free
[openssl.git] / crypto / x509 / x509_lu.c
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
59 #include <stdio.h>
60 #include "cryptlib.h"
61 #include <openssl/lhash.h>
62 #include <openssl/x509.h>
63 #include <openssl/x509v3.h>
64
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
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
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
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
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
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
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
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
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   
157 static int x509_object_cmp(const X509_OBJECT * const *a, const X509_OBJECT * const *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
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         ret->objs = sk_X509_OBJECT_new(x509_object_cmp);
185         ret->cache=1;
186         ret->get_cert_methods=sk_X509_LOOKUP_new_null();
187         ret->verify=0;
188         ret->verify_cb=0;
189
190         if ((ret->param = X509_VERIFY_PARAM_new()) == NULL)
191                 return NULL;
192
193         ret->get_issuer = 0;
194         ret->check_issued = 0;
195         ret->check_revocation = 0;
196         ret->get_crl = 0;
197         ret->check_crl = 0;
198         ret->cert_crl = 0;
199         ret->lookup_certs = 0;
200         ret->lookup_crls = 0;
201         ret->cleanup = 0;
202
203         if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509_STORE, ret, &ret->ex_data))
204                 {
205                 sk_X509_OBJECT_free(ret->objs);
206                 OPENSSL_free(ret);
207                 return NULL;
208                 }
209
210         ret->references=1;
211         return ret;
212         }
213
214 static void cleanup(X509_OBJECT *a)
215         {
216         if (a->type == X509_LU_X509)
217                 {
218                 X509_free(a->data.x509);
219                 }
220         else if (a->type == X509_LU_CRL)
221                 {
222                 X509_CRL_free(a->data.crl);
223                 }
224         else
225                 {
226                 /* abort(); */
227                 }
228
229         OPENSSL_free(a);
230         }
231
232 void X509_STORE_free(X509_STORE *vfy)
233         {
234         int i;
235         STACK_OF(X509_LOOKUP) *sk;
236         X509_LOOKUP *lu;
237
238         if (vfy == NULL)
239             return;
240
241         i=CRYPTO_add(&vfy->references,-1,CRYPTO_LOCK_X509_STORE);
242 #ifdef REF_PRINT
243         REF_PRINT("X509_STORE",vfy);
244 #endif
245         if (i > 0) return;
246 #ifdef REF_CHECK
247         if (i < 0)
248                 {
249                 fprintf(stderr,"X509_STORE_free, bad reference count\n");
250                 abort(); /* ok */
251                 }
252 #endif
253
254         sk=vfy->get_cert_methods;
255         for (i=0; i<sk_X509_LOOKUP_num(sk); i++)
256                 {
257                 lu=sk_X509_LOOKUP_value(sk,i);
258                 X509_LOOKUP_shutdown(lu);
259                 X509_LOOKUP_free(lu);
260                 }
261         sk_X509_LOOKUP_free(sk);
262         sk_X509_OBJECT_pop_free(vfy->objs, cleanup);
263
264         CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509_STORE, vfy, &vfy->ex_data);
265         if (vfy->param)
266                 X509_VERIFY_PARAM_free(vfy->param);
267         OPENSSL_free(vfy);
268         }
269
270 X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v, X509_LOOKUP_METHOD *m)
271         {
272         int i;
273         STACK_OF(X509_LOOKUP) *sk;
274         X509_LOOKUP *lu;
275
276         sk=v->get_cert_methods;
277         for (i=0; i<sk_X509_LOOKUP_num(sk); i++)
278                 {
279                 lu=sk_X509_LOOKUP_value(sk,i);
280                 if (m == lu->method)
281                         {
282                         return lu;
283                         }
284                 }
285         /* a new one */
286         lu=X509_LOOKUP_new(m);
287         if (lu == NULL)
288                 return NULL;
289         else
290                 {
291                 lu->store_ctx=v;
292                 if (sk_X509_LOOKUP_push(v->get_cert_methods,lu))
293                         return lu;
294                 else
295                         {
296                         X509_LOOKUP_free(lu);
297                         return NULL;
298                         }
299                 }
300         }
301
302 int X509_STORE_get_by_subject(X509_STORE_CTX *vs, int type, X509_NAME *name,
303              X509_OBJECT *ret)
304         {
305         X509_STORE *ctx=vs->ctx;
306         X509_LOOKUP *lu;
307         X509_OBJECT stmp,*tmp;
308         int i,j;
309
310         CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
311         tmp=X509_OBJECT_retrieve_by_subject(ctx->objs,type,name);
312         CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
313
314         if (tmp == NULL || type == X509_LU_CRL)
315                 {
316                 for (i=vs->current_method; i<sk_X509_LOOKUP_num(ctx->get_cert_methods); i++)
317                         {
318                         lu=sk_X509_LOOKUP_value(ctx->get_cert_methods,i);
319                         j=X509_LOOKUP_by_subject(lu,type,name,&stmp);
320                         if (j < 0)
321                                 {
322                                 vs->current_method=j;
323                                 return j;
324                                 }
325                         else if (j)
326                                 {
327                                 tmp= &stmp;
328                                 break;
329                                 }
330                         }
331                 vs->current_method=0;
332                 if (tmp == NULL)
333                         return 0;
334                 }
335
336 /*      if (ret->data.ptr != NULL)
337                 X509_OBJECT_free_contents(ret); */
338
339         ret->type=tmp->type;
340         ret->data.ptr=tmp->data.ptr;
341
342         X509_OBJECT_up_ref_count(ret);
343
344         return 1;
345         }
346
347 int X509_STORE_add_cert(X509_STORE *ctx, X509 *x)
348         {
349         X509_OBJECT *obj;
350         int ret=1;
351
352         if (x == NULL) return 0;
353         obj=(X509_OBJECT *)OPENSSL_malloc(sizeof(X509_OBJECT));
354         if (obj == NULL)
355                 {
356                 X509err(X509_F_X509_STORE_ADD_CERT,ERR_R_MALLOC_FAILURE);
357                 return 0;
358                 }
359         obj->type=X509_LU_X509;
360         obj->data.x509=x;
361
362         CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
363
364         X509_OBJECT_up_ref_count(obj);
365
366         if (X509_OBJECT_retrieve_match(ctx->objs, obj))
367                 {
368                 X509_OBJECT_free_contents(obj);
369                 OPENSSL_free(obj);
370                 X509err(X509_F_X509_STORE_ADD_CERT,X509_R_CERT_ALREADY_IN_HASH_TABLE);
371                 ret=0;
372                 } 
373         else sk_X509_OBJECT_push(ctx->objs, obj);
374
375         CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
376
377         return ret;
378         }
379
380 int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x)
381         {
382         X509_OBJECT *obj;
383         int ret=1;
384
385         if (x == NULL) return 0;
386         obj=(X509_OBJECT *)OPENSSL_malloc(sizeof(X509_OBJECT));
387         if (obj == NULL)
388                 {
389                 X509err(X509_F_X509_STORE_ADD_CRL,ERR_R_MALLOC_FAILURE);
390                 return 0;
391                 }
392         obj->type=X509_LU_CRL;
393         obj->data.crl=x;
394
395         CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
396
397         X509_OBJECT_up_ref_count(obj);
398
399         if (X509_OBJECT_retrieve_match(ctx->objs, obj))
400                 {
401                 X509_OBJECT_free_contents(obj);
402                 OPENSSL_free(obj);
403                 X509err(X509_F_X509_STORE_ADD_CRL,X509_R_CERT_ALREADY_IN_HASH_TABLE);
404                 ret=0;
405                 }
406         else sk_X509_OBJECT_push(ctx->objs, obj);
407
408         CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
409
410         return ret;
411         }
412
413 void X509_OBJECT_up_ref_count(X509_OBJECT *a)
414         {
415         switch (a->type)
416                 {
417         case X509_LU_X509:
418                 CRYPTO_add(&a->data.x509->references,1,CRYPTO_LOCK_X509);
419                 break;
420         case X509_LU_CRL:
421                 CRYPTO_add(&a->data.crl->references,1,CRYPTO_LOCK_X509_CRL);
422                 break;
423                 }
424         }
425
426 void X509_OBJECT_free_contents(X509_OBJECT *a)
427         {
428         switch (a->type)
429                 {
430         case X509_LU_X509:
431                 X509_free(a->data.x509);
432                 break;
433         case X509_LU_CRL:
434                 X509_CRL_free(a->data.crl);
435                 break;
436                 }
437         }
438
439 static int x509_object_idx_cnt(STACK_OF(X509_OBJECT) *h, int type,
440              X509_NAME *name, int *pnmatch)
441         {
442         X509_OBJECT stmp;
443         X509 x509_s;
444         X509_CINF cinf_s;
445         X509_CRL crl_s;
446         X509_CRL_INFO crl_info_s;
447         int idx;
448
449         stmp.type=type;
450         switch (type)
451                 {
452         case X509_LU_X509:
453                 stmp.data.x509= &x509_s;
454                 x509_s.cert_info= &cinf_s;
455                 cinf_s.subject=name;
456                 break;
457         case X509_LU_CRL:
458                 stmp.data.crl= &crl_s;
459                 crl_s.crl= &crl_info_s;
460                 crl_info_s.issuer=name;
461                 break;
462         default:
463                 /* abort(); */
464                 return -1;
465                 }
466
467         idx = sk_X509_OBJECT_find(h,&stmp);
468         if (idx >= 0 && pnmatch)
469                 {
470                 int tidx;
471                 const X509_OBJECT *tobj, *pstmp;
472                 *pnmatch = 1;
473                 pstmp = &stmp;
474                 for (tidx = idx + 1; tidx < sk_X509_OBJECT_num(h); tidx++)
475                         {
476                         tobj = sk_X509_OBJECT_value(h, tidx);
477                         if (x509_object_cmp(&tobj, &pstmp))
478                                 break;
479                         (*pnmatch)++;
480                         }
481                 }
482         return idx;
483         }
484
485
486 int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, int type,
487              X509_NAME *name)
488         {
489         return x509_object_idx_cnt(h, type, name, NULL);
490         }
491
492 X509_OBJECT *X509_OBJECT_retrieve_by_subject(STACK_OF(X509_OBJECT) *h, int type,
493              X509_NAME *name)
494         {
495         int idx;
496         idx = X509_OBJECT_idx_by_subject(h, type, name);
497         if (idx==-1) return NULL;
498         return sk_X509_OBJECT_value(h, idx);
499         }
500
501 STACK_OF(X509)* X509_STORE_get1_certs(X509_STORE_CTX *ctx, X509_NAME *nm)
502         {
503         int i, idx, cnt;
504         STACK_OF(X509) *sk;
505         X509 *x;
506         X509_OBJECT *obj;
507         sk = sk_X509_new_null();
508         CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
509         idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
510         if (idx < 0)
511                 {
512                 /* Nothing found in cache: do lookup to possibly add new
513                  * objects to cache
514                  */
515                 X509_OBJECT xobj;
516                 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
517                 if (!X509_STORE_get_by_subject(ctx, X509_LU_X509, nm, &xobj))
518                         {
519                         sk_X509_free(sk);
520                         return NULL;
521                         }
522                 X509_OBJECT_free_contents(&xobj);
523                 CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
524                 idx = x509_object_idx_cnt(ctx->ctx->objs,X509_LU_X509,nm, &cnt);
525                 if (idx < 0)
526                         {
527                         CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
528                         sk_X509_free(sk);
529                         return NULL;
530                         }
531                 }
532         for (i = 0; i < cnt; i++, idx++)
533                 {
534                 obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
535                 x = obj->data.x509;
536                 CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
537                 if (!sk_X509_push(sk, x))
538                         {
539                         CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
540                         X509_free(x);
541                         sk_X509_pop_free(sk, X509_free);
542                         return NULL;
543                         }
544                 }
545         CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
546         return sk;
547
548         }
549
550 STACK_OF(X509_CRL)* X509_STORE_get1_crls(X509_STORE_CTX *ctx, X509_NAME *nm)
551         {
552         int i, idx, cnt;
553         STACK_OF(X509_CRL) *sk;
554         X509_CRL *x;
555         X509_OBJECT *obj, xobj;
556         sk = sk_X509_CRL_new_null();
557         CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
558         /* Check cache first */
559         idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_CRL, nm, &cnt);
560
561         /* Always do lookup to possibly add new CRLs to cache
562          */
563         CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
564         if (!X509_STORE_get_by_subject(ctx, X509_LU_CRL, nm, &xobj))
565                 {
566                 sk_X509_CRL_free(sk);
567                 return NULL;
568                 }
569         X509_OBJECT_free_contents(&xobj);
570         CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
571         idx = x509_object_idx_cnt(ctx->ctx->objs,X509_LU_CRL, nm, &cnt);
572         if (idx < 0)
573                 {
574                 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
575                 sk_X509_CRL_free(sk);
576                 return NULL;
577                 }
578
579         for (i = 0; i < cnt; i++, idx++)
580                 {
581                 obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
582                 x = obj->data.crl;
583                 CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509_CRL);
584                 if (!sk_X509_CRL_push(sk, x))
585                         {
586                         CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
587                         X509_CRL_free(x);
588                         sk_X509_CRL_pop_free(sk, X509_CRL_free);
589                         return NULL;
590                         }
591                 }
592         CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
593         return sk;
594         }
595
596 X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h, X509_OBJECT *x)
597         {
598         int idx, i;
599         X509_OBJECT *obj;
600         idx = sk_X509_OBJECT_find(h, x);
601         if (idx == -1) return NULL;
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  */
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 i, ok, idx, ret;
642         xn=X509_get_issuer_name(x);
643         ok=X509_STORE_get_by_subject(ctx,X509_LU_X509,xn,&obj);
644         if (ok != X509_LU_X509)
645                 {
646                 if (ok == X509_LU_RETRY)
647                         {
648                         X509_OBJECT_free_contents(&obj);
649                         X509err(X509_F_X509_STORE_CTX_GET1_ISSUER,X509_R_SHOULD_RETRY);
650                         return -1;
651                         }
652                 else if (ok != X509_LU_FAIL)
653                         {
654                         X509_OBJECT_free_contents(&obj);
655                         /* not good :-(, break anyway */
656                         return -1;
657                         }
658                 return 0;
659                 }
660         /* If certificate matches all OK */
661         if (ctx->check_issued(ctx, x, obj.data.x509))
662                 {
663                 *issuer = obj.data.x509;
664                 return 1;
665                 }
666         X509_OBJECT_free_contents(&obj);
667
668         /* Else find index of first cert accepted by 'check_issued' */
669         ret = 0;
670         CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
671         idx = X509_OBJECT_idx_by_subject(ctx->ctx->objs, X509_LU_X509, xn);
672         if (idx != -1) /* should be true as we've had at least one match */
673                 {
674                 /* Look through all matching certs for suitable issuer */
675                 for (i = idx; i < sk_X509_OBJECT_num(ctx->ctx->objs); i++)
676                         {
677                         pobj = sk_X509_OBJECT_value(ctx->ctx->objs, i);
678                         /* See if we've run past the matches */
679                         if (pobj->type != X509_LU_X509)
680                                 break;
681                         if (X509_NAME_cmp(xn, X509_get_subject_name(pobj->data.x509)))
682                                 break;
683                         if (ctx->check_issued(ctx, x, pobj->data.x509))
684                                 {
685                                 *issuer = pobj->data.x509;
686                                 X509_OBJECT_up_ref_count(pobj);
687                                 ret = 1;
688                                 break;
689                                 }
690                         }
691                 }
692         CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
693         return ret;
694         }
695
696 int X509_STORE_set_flags(X509_STORE *ctx, unsigned long flags)
697         {
698         return X509_VERIFY_PARAM_set_flags(ctx->param, flags);
699         }
700
701 int X509_STORE_set_depth(X509_STORE *ctx, int depth)
702         {
703         X509_VERIFY_PARAM_set_depth(ctx->param, depth);
704         return 1;
705         }
706
707 int X509_STORE_set_purpose(X509_STORE *ctx, int purpose)
708         {
709         return X509_VERIFY_PARAM_set_purpose(ctx->param, purpose);
710         }
711
712 int X509_STORE_set_trust(X509_STORE *ctx, int trust)
713         {
714         return X509_VERIFY_PARAM_set_trust(ctx->param, trust);
715         }
716
717 int X509_STORE_set1_param(X509_STORE *ctx, X509_VERIFY_PARAM *param)
718         {
719         return X509_VERIFY_PARAM_set1(ctx->param, param);
720         }
721
722 void X509_STORE_set_verify_cb(X509_STORE *ctx,
723                                   int (*verify_cb)(int, X509_STORE_CTX *))
724         {
725         ctx->verify_cb = verify_cb;
726         }
727
728 IMPLEMENT_STACK_OF(X509_LOOKUP)
729 IMPLEMENT_STACK_OF(X509_OBJECT)