75ab96e506ee3b8888c669f3e264034fd687e92a
[openssl.git] / crypto / x509 / x509_vfy.c
1 /* crypto/x509/x509_vfy.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 <time.h>
61 #include <errno.h>
62
63 #include "cryptlib.h"
64 #include <openssl/crypto.h>
65 #include <openssl/lhash.h>
66 #include <openssl/buffer.h>
67 #include <openssl/evp.h>
68 #include <openssl/asn1.h>
69 #include <openssl/x509.h>
70 #include <openssl/x509v3.h>
71 #include <openssl/objects.h>
72
73 static int null_callback(int ok,X509_STORE_CTX *e);
74 static int check_chain_purpose(X509_STORE_CTX *ctx);
75 static int check_trust(X509_STORE_CTX *ctx);
76 static int internal_verify(X509_STORE_CTX *ctx);
77 const char *X509_version="X.509" OPENSSL_VERSION_PTEXT;
78
79 static STACK *x509_store_ctx_method=NULL;
80 static int x509_store_ctx_num=0;
81 #if 0
82 static int x509_store_num=1;
83 static STACK *x509_store_method=NULL;
84 #endif
85
86 static int null_callback(int ok, X509_STORE_CTX *e)
87         {
88         return(ok);
89         }
90
91 #if 0
92 static int x509_subject_cmp(X509 **a, X509 **b)
93         {
94         return(X509_subject_name_cmp(*a,*b));
95         }
96 #endif
97
98 int X509_verify_cert(X509_STORE_CTX *ctx)
99         {
100         X509 *x,*xtmp,*chain_ss=NULL;
101         X509_NAME *xn;
102         X509_OBJECT obj;
103         int depth,i,ok=0;
104         int num;
105         int (*cb)();
106         STACK_OF(X509) *sktmp=NULL;
107
108         if (ctx->cert == NULL)
109                 {
110                 X509err(X509_F_X509_VERIFY_CERT,X509_R_NO_CERT_SET_FOR_US_TO_VERIFY);
111                 return(-1);
112                 }
113
114         cb=ctx->ctx->verify_cb;
115         if (cb == NULL) cb=null_callback;
116
117         /* first we make sure the chain we are going to build is
118          * present and that the first entry is in place */
119         if (ctx->chain == NULL)
120                 {
121                 if (    ((ctx->chain=sk_X509_new_null()) == NULL) ||
122                         (!sk_X509_push(ctx->chain,ctx->cert)))
123                         {
124                         X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
125                         goto end;
126                         }
127                 CRYPTO_add(&ctx->cert->references,1,CRYPTO_LOCK_X509);
128                 ctx->last_untrusted=1;
129                 }
130
131         /* We use a temporary STACK so we can chop and hack at it */
132         if (ctx->untrusted != NULL
133             && (sktmp=sk_X509_dup(ctx->untrusted)) == NULL)
134                 {
135                 X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
136                 goto end;
137                 }
138
139         num=sk_X509_num(ctx->chain);
140         x=sk_X509_value(ctx->chain,num-1);
141         depth=ctx->depth;
142
143
144         for (;;)
145                 {
146                 /* If we have enough, we break */
147                 if (depth < num) break; /* FIXME: If this happens, we should take
148                                          * note of it and, if appropriate, use the
149                                          * X509_V_ERR_CERT_CHAIN_TOO_LONG error
150                                          * code later.
151                                          */
152
153                 /* If we are self signed, we break */
154                 xn=X509_get_issuer_name(x);
155                 if (X509_NAME_cmp(X509_get_subject_name(x),xn) == 0)
156                         break;
157
158                 /* If we were passed a cert chain, use it first */
159                 if (ctx->untrusted != NULL)
160                         {
161                         xtmp=X509_find_by_subject(sktmp,xn);
162                         if (xtmp != NULL)
163                                 {
164                                 if (!sk_X509_push(ctx->chain,xtmp))
165                                         {
166                                         X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
167                                         goto end;
168                                         }
169                                 CRYPTO_add(&xtmp->references,1,CRYPTO_LOCK_X509);
170                                 sk_X509_delete_ptr(sktmp,xtmp);
171                                 ctx->last_untrusted++;
172                                 x=xtmp;
173                                 num++;
174                                 /* reparse the full chain for
175                                  * the next one */
176                                 continue;
177                                 }
178                         }
179                 break;
180                 }
181
182         /* at this point, chain should contain a list of untrusted
183          * certificates.  We now need to add at least one trusted one,
184          * if possible, otherwise we complain. */
185
186         i=sk_X509_num(ctx->chain);
187         x=sk_X509_value(ctx->chain,i-1);
188         xn = X509_get_subject_name(x);
189         if (X509_NAME_cmp(xn,X509_get_issuer_name(x))
190                 == 0)
191                 {
192                 /* we have a self signed certificate */
193                 if (sk_X509_num(ctx->chain) == 1)
194                         {
195                         /* We have a single self signed certificate: see if
196                          * we can find it in the store. We must have an exact
197                          * match to avoid possible impersonation.
198                          */
199                         ok=X509_STORE_get_by_subject(ctx,X509_LU_X509,xn,&obj);
200                         if ((ok != X509_LU_X509) || X509_cmp(x, obj.data.x509)) 
201                                 {
202                                 ctx->error=X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT;
203                                 ctx->current_cert=x;
204                                 ctx->error_depth=i-1;
205                                 if(ok == X509_LU_X509) X509_OBJECT_free_contents(&obj);
206                                 ok=cb(0,ctx);
207                                 if (!ok) goto end;
208                                 }
209                         else 
210                                 {
211                                 /* We have a match: replace certificate with store version
212                                  * so we get any trust settings.
213                                  */
214                                 X509_free(x);
215                                 x = obj.data.x509;
216                                 sk_X509_set(ctx->chain, i - 1, x);
217                                 ctx->last_untrusted=0;
218                                 }
219                         }
220                 else
221                         {
222                         /* worry more about this one elsewhere */
223                         chain_ss=sk_X509_pop(ctx->chain);
224                         ctx->last_untrusted--;
225                         num--;
226                         x=sk_X509_value(ctx->chain,num-1);
227                         }
228                 }
229
230         /* We now lookup certs from the certificate store */
231         for (;;)
232                 {
233                 /* If we have enough, we break */
234                 if (depth < num) break;
235
236                 /* If we are self signed, we break */
237                 xn=X509_get_issuer_name(x);
238                 if (X509_NAME_cmp(X509_get_subject_name(x),xn) == 0)
239                         break;
240
241                 ok=X509_STORE_get_by_subject(ctx,X509_LU_X509,xn,&obj);
242                 if (ok != X509_LU_X509)
243                         {
244                         if (ok == X509_LU_RETRY)
245                                 {
246                                 X509_OBJECT_free_contents(&obj);
247                                 X509err(X509_F_X509_VERIFY_CERT,X509_R_SHOULD_RETRY);
248                                 return(ok);
249                                 }
250                         else if (ok != X509_LU_FAIL)
251                                 {
252                                 X509_OBJECT_free_contents(&obj);
253                                 /* not good :-(, break anyway */
254                                 return(ok);
255                                 }
256                         break;
257                         }
258                 x=obj.data.x509;
259                 if (!sk_X509_push(ctx->chain,obj.data.x509))
260                         {
261                         X509_OBJECT_free_contents(&obj);
262                         X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
263                         return(0);
264                         }
265                 num++;
266                 }
267
268         /* we now have our chain, lets check it... */
269         xn=X509_get_issuer_name(x);
270         if (X509_NAME_cmp(X509_get_subject_name(x),xn) != 0)
271                 {
272                 if ((chain_ss == NULL) || (X509_NAME_cmp(X509_get_subject_name(chain_ss),xn) != 0))
273                         {
274                         if (ctx->last_untrusted >= num)
275                                 ctx->error=X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY;
276                         else
277                                 ctx->error=X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT;
278                         ctx->current_cert=x;
279                         }
280                 else
281                         {
282
283                         sk_X509_push(ctx->chain,chain_ss);
284                         num++;
285                         ctx->last_untrusted=num;
286                         ctx->current_cert=chain_ss;
287                         ctx->error=X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN;
288                         chain_ss=NULL;
289                         }
290
291                 ctx->error_depth=num-1;
292                 ok=cb(0,ctx);
293                 if (!ok) goto end;
294                 }
295
296         /* We have the chain complete: now we need to check its purpose */
297         if(ctx->chain_purpose > 0) ok = check_chain_purpose(ctx);
298
299         if(!ok) goto end;
300
301         /* The chain extensions are OK: check trust */
302
303         if(ctx->trust_purpose > 0) ok = check_trust(ctx);
304
305         if(!ok) goto end;
306
307         /* We may as well copy down any DSA parameters that are required */
308         X509_get_pubkey_parameters(NULL,ctx->chain);
309
310         /* At this point, we have a chain and just need to verify it */
311         if (ctx->ctx->verify != NULL)
312                 ok=ctx->ctx->verify(ctx);
313         else
314                 ok=internal_verify(ctx);
315         if (0)
316                 {
317 end:
318                 X509_get_pubkey_parameters(NULL,ctx->chain);
319                 }
320         if (sktmp != NULL) sk_X509_free(sktmp);
321         if (chain_ss != NULL) X509_free(chain_ss);
322         return(ok);
323         }
324
325 /* Check a certificate chains extensions for consistency
326  * with the supplied purpose
327  */
328
329 static int check_chain_purpose(X509_STORE_CTX *ctx)
330 {
331 #ifdef NO_CHAIN_VERIFY
332         return 1;
333 #else
334         int i, ok=0;
335         X509 *x;
336         int (*cb)();
337         cb=ctx->ctx->verify_cb;
338         if (cb == NULL) cb=null_callback;
339         /* Check all untrusted certificates */
340         for(i = 0; i < ctx->last_untrusted; i++) {
341                 x = sk_X509_value(ctx->chain, i);
342                 if(!X509_check_purpose(x, ctx->chain_purpose, i)) {
343                         if(i) ctx->error = X509_V_ERR_INVALID_CA;
344                         else ctx->error = X509_V_ERR_INVALID_PURPOSE;
345                         ctx->error_depth = i;
346                         ctx->current_cert = x;
347                         ok=cb(0,ctx);
348                         if(!ok) goto end;
349                 }
350                 /* Check pathlen */
351                 if((i > 1) && (x->ex_pathlen != -1)
352                                         && (i > (x->ex_pathlen + 1))) {
353                         ctx->error = X509_V_ERR_PATH_LENGTH_EXCEEDED;
354                         ctx->error_depth = i;
355                         ctx->current_cert = x;
356                         ok=cb(0,ctx);
357                         if(!ok) goto end;
358                 }
359         }
360         ok = 1;
361         end:
362         return(ok);
363 #endif
364 }
365
366 static int check_trust(X509_STORE_CTX *ctx)
367 {
368 #ifdef NO_CHAIN_VERIFY
369         return 1;
370 #else
371         int i, ok;
372         X509 *x;
373         int (*cb)();
374         cb=ctx->ctx->verify_cb;
375         if (cb == NULL) cb=null_callback;
376 /* For now just check the last certificate in the chain */
377         i = sk_X509_num(ctx->chain) - 1;
378         x = sk_X509_value(ctx->chain, i);
379         ok = X509_check_trust(x, ctx->trust_purpose, 0);
380         if(ok == X509_TRUST_TRUSTED) return 1;
381         ctx->error_depth = sk_X509_num(ctx->chain) - 1;
382         ctx->current_cert = x;
383         if(ok == X509_TRUST_REJECTED) ctx->error = X509_V_ERR_CERT_REJECTED;
384         else ctx->error = X509_V_ERR_CERT_UNTRUSTED;
385         ok = cb(0, ctx);
386         return(ok);
387 #endif
388 }
389
390 static int internal_verify(X509_STORE_CTX *ctx)
391         {
392         int i,ok=0,n;
393         X509 *xs,*xi;
394         EVP_PKEY *pkey=NULL;
395         int (*cb)();
396
397         cb=ctx->ctx->verify_cb;
398         if (cb == NULL) cb=null_callback;
399
400         n=sk_X509_num(ctx->chain);
401         ctx->error_depth=n-1;
402         n--;
403         xi=sk_X509_value(ctx->chain,n);
404         if (X509_NAME_cmp(X509_get_subject_name(xi),
405                 X509_get_issuer_name(xi)) == 0)
406                 xs=xi;
407         else
408                 {
409                 if (n <= 0)
410                         {
411                         ctx->error=X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE;
412                         ctx->current_cert=xi;
413                         ok=cb(0,ctx);
414                         goto end;
415                         }
416                 else
417                         {
418                         n--;
419                         ctx->error_depth=n;
420                         xs=sk_X509_value(ctx->chain,n);
421                         }
422                 }
423
424 /*      ctx->error=0;  not needed */
425         while (n >= 0)
426                 {
427                 ctx->error_depth=n;
428                 if (!xs->valid)
429                         {
430                         if ((pkey=X509_get_pubkey(xi)) == NULL)
431                                 {
432                                 ctx->error=X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY;
433                                 ctx->current_cert=xi;
434                                 ok=(*cb)(0,ctx);
435                                 if (!ok) goto end;
436                                 }
437                         if (X509_verify(xs,pkey) <= 0)
438                                 {
439                                 EVP_PKEY_free(pkey);
440                                 ctx->error=X509_V_ERR_CERT_SIGNATURE_FAILURE;
441                                 ctx->current_cert=xs;
442                                 ok=(*cb)(0,ctx);
443                                 if (!ok) goto end;
444                                 }
445                         EVP_PKEY_free(pkey);
446                         pkey=NULL;
447
448                         i=X509_cmp_current_time(X509_get_notBefore(xs));
449                         if (i == 0)
450                                 {
451                                 ctx->error=X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD;
452                                 ctx->current_cert=xs;
453                                 ok=(*cb)(0,ctx);
454                                 if (!ok) goto end;
455                                 }
456                         if (i > 0)
457                                 {
458                                 ctx->error=X509_V_ERR_CERT_NOT_YET_VALID;
459                                 ctx->current_cert=xs;
460                                 ok=(*cb)(0,ctx);
461                                 if (!ok) goto end;
462                                 }
463                         xs->valid=1;
464                         }
465
466                 i=X509_cmp_current_time(X509_get_notAfter(xs));
467                 if (i == 0)
468                         {
469                         ctx->error=X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD;
470                         ctx->current_cert=xs;
471                         ok=(*cb)(0,ctx);
472                         if (!ok) goto end;
473                         }
474
475                 if (i < 0)
476                         {
477                         ctx->error=X509_V_ERR_CERT_HAS_EXPIRED;
478                         ctx->current_cert=xs;
479                         ok=(*cb)(0,ctx);
480                         if (!ok) goto end;
481                         }
482
483                 /* CRL CHECK */
484
485                 /* The last error (if any) is still in the error value */
486                 ctx->current_cert=xs;
487                 ok=(*cb)(1,ctx);
488                 if (!ok) goto end;
489
490                 n--;
491                 if (n >= 0)
492                         {
493                         xi=xs;
494                         xs=sk_X509_value(ctx->chain,n);
495                         }
496                 }
497         ok=1;
498 end:
499         return(ok);
500         }
501
502 int X509_cmp_current_time(ASN1_UTCTIME *ctm)
503         {
504         char *str;
505         ASN1_UTCTIME atm;
506         time_t offset;
507         char buff1[24],buff2[24],*p;
508         int i,j;
509
510         p=buff1;
511         i=ctm->length;
512         str=(char *)ctm->data;
513         if ((i < 11) || (i > 17)) return(0);
514         memcpy(p,str,10);
515         p+=10;
516         str+=10;
517
518         if ((*str == 'Z') || (*str == '-') || (*str == '+'))
519                 { *(p++)='0'; *(p++)='0'; }
520         else    { *(p++)= *(str++); *(p++)= *(str++); }
521         *(p++)='Z';
522         *(p++)='\0';
523
524         if (*str == 'Z')
525                 offset=0;
526         else
527                 {
528                 if ((*str != '+') && (str[5] != '-'))
529                         return(0);
530                 offset=((str[1]-'0')*10+(str[2]-'0'))*60;
531                 offset+=(str[3]-'0')*10+(str[4]-'0');
532                 if (*str == '-')
533                         offset= -offset;
534                 }
535         atm.type=V_ASN1_UTCTIME;
536         atm.length=sizeof(buff2);
537         atm.data=(unsigned char *)buff2;
538
539         X509_gmtime_adj(&atm,-offset);
540
541         i=(buff1[0]-'0')*10+(buff1[1]-'0');
542         if (i < 50) i+=100; /* cf. RFC 2459 */
543         j=(buff2[0]-'0')*10+(buff2[1]-'0');
544         if (j < 50) j+=100;
545
546         if (i < j) return (-1);
547         if (i > j) return (1);
548         i=strcmp(buff1,buff2);
549         if (i == 0) /* wait a second then return younger :-) */
550                 return(-1);
551         else
552                 return(i);
553         }
554
555 ASN1_UTCTIME *X509_gmtime_adj(ASN1_UTCTIME *s, long adj)
556         {
557         time_t t;
558
559         time(&t);
560         t+=adj;
561         return(ASN1_UTCTIME_set(s,t));
562         }
563
564 int X509_get_pubkey_parameters(EVP_PKEY *pkey, STACK_OF(X509) *chain)
565         {
566         EVP_PKEY *ktmp=NULL,*ktmp2;
567         int i,j;
568
569         if ((pkey != NULL) && !EVP_PKEY_missing_parameters(pkey)) return(1);
570
571         for (i=0; i<sk_X509_num(chain); i++)
572                 {
573                 ktmp=X509_get_pubkey(sk_X509_value(chain,i));
574                 if (ktmp == NULL)
575                         {
576                         X509err(X509_F_X509_GET_PUBKEY_PARAMETERS,X509_R_UNABLE_TO_GET_CERTS_PUBLIC_KEY);
577                         return(0);
578                         }
579                 if (!EVP_PKEY_missing_parameters(ktmp))
580                         break;
581                 else
582                         {
583                         EVP_PKEY_free(ktmp);
584                         ktmp=NULL;
585                         }
586                 }
587         if (ktmp == NULL)
588                 {
589                 X509err(X509_F_X509_GET_PUBKEY_PARAMETERS,X509_R_UNABLE_TO_FIND_PARAMETERS_IN_CHAIN);
590                 return(0);
591                 }
592
593         /* first, populate the other certs */
594         for (j=i-1; j >= 0; j--)
595                 {
596                 ktmp2=X509_get_pubkey(sk_X509_value(chain,j));
597                 EVP_PKEY_copy_parameters(ktmp2,ktmp);
598                 EVP_PKEY_free(ktmp2);
599                 }
600         
601         if (pkey != NULL) EVP_PKEY_copy_parameters(pkey,ktmp);
602         EVP_PKEY_free(ktmp);
603         return(1);
604         }
605
606 int X509_STORE_add_cert(X509_STORE *ctx, X509 *x)
607         {
608         X509_OBJECT *obj,*r;
609         int ret=1;
610
611         if (x == NULL) return(0);
612         obj=(X509_OBJECT *)Malloc(sizeof(X509_OBJECT));
613         if (obj == NULL)
614                 {
615                 X509err(X509_F_X509_STORE_ADD_CERT,ERR_R_MALLOC_FAILURE);
616                 return(0);
617                 }
618         obj->type=X509_LU_X509;
619         obj->data.x509=x;
620
621         CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
622
623         X509_OBJECT_up_ref_count(obj);
624
625         r=(X509_OBJECT *)lh_insert(ctx->certs,(char *)obj);
626         if (r != NULL)
627                 { /* oops, put it back */
628                 lh_delete(ctx->certs,(char *)obj);
629                 X509_OBJECT_free_contents(obj);
630                 Free(obj);
631                 lh_insert(ctx->certs,(char *)r);
632                 X509err(X509_F_X509_STORE_ADD_CERT,X509_R_CERT_ALREADY_IN_HASH_TABLE);
633                 ret=0;
634                 }
635
636         CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
637
638         return(ret);    
639         }
640
641 int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x)
642         {
643         X509_OBJECT *obj,*r;
644         int ret=1;
645
646         if (x == NULL) return(0);
647         obj=(X509_OBJECT *)Malloc(sizeof(X509_OBJECT));
648         if (obj == NULL)
649                 {
650                 X509err(X509_F_X509_STORE_ADD_CRL,ERR_R_MALLOC_FAILURE);
651                 return(0);
652                 }
653         obj->type=X509_LU_CRL;
654         obj->data.crl=x;
655
656         CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
657
658         X509_OBJECT_up_ref_count(obj);
659
660         r=(X509_OBJECT *)lh_insert(ctx->certs,(char *)obj);
661         if (r != NULL)
662                 { /* oops, put it back */
663                 lh_delete(ctx->certs,(char *)obj);
664                 X509_OBJECT_free_contents(obj);
665                 Free(obj);
666                 lh_insert(ctx->certs,(char *)r);
667                 X509err(X509_F_X509_STORE_ADD_CRL,X509_R_CERT_ALREADY_IN_HASH_TABLE);
668                 ret=0;
669                 }
670
671         CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
672
673         return(ret);    
674         }
675
676 int X509_STORE_CTX_get_ex_new_index(long argl, char *argp, int (*new_func)(),
677              int (*dup_func)(), void (*free_func)())
678         {
679         x509_store_ctx_num++;
680         return(CRYPTO_get_ex_new_index(x509_store_ctx_num-1,
681                 &x509_store_ctx_method,
682                 argl,argp,new_func,dup_func,free_func));
683         }
684
685 int X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx, int idx, void *data)
686         {
687         return(CRYPTO_set_ex_data(&ctx->ex_data,idx,data));
688         }
689
690 void *X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx, int idx)
691         {
692         return(CRYPTO_get_ex_data(&ctx->ex_data,idx));
693         }
694
695 int X509_STORE_CTX_get_error(X509_STORE_CTX *ctx)
696         {
697         return(ctx->error);
698         }
699
700 void X509_STORE_CTX_set_error(X509_STORE_CTX *ctx, int err)
701         {
702         ctx->error=err;
703         }
704
705 int X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx)
706         {
707         return(ctx->error_depth);
708         }
709
710 X509 *X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx)
711         {
712         return(ctx->current_cert);
713         }
714
715 STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx)
716         {
717         return(ctx->chain);
718         }
719
720 void X509_STORE_CTX_set_cert(X509_STORE_CTX *ctx, X509 *x)
721         {
722         ctx->cert=x;
723         }
724
725 void X509_STORE_CTX_set_chain(X509_STORE_CTX *ctx, STACK_OF(X509) *sk)
726         {
727         ctx->untrusted=sk;
728         }
729
730 int X509_STORE_CTX_chain_purpose(X509_STORE_CTX *ctx, int purpose)
731         {
732                 return X509_set_purpose_and_trust(purpose,
733                                 &ctx->chain_purpose, &ctx->trust_purpose);
734         }
735
736 void X509_STORE_CTX_trust_purpose(X509_STORE_CTX *ctx, int purpose)
737         {
738         ctx->trust_purpose = purpose;
739         }
740
741 int X509_set_purpose_and_trust(int id, int *purp, int *trust)
742 {
743         X509_PURPOSE *ptmp;
744         int idx;
745         idx = X509_PURPOSE_get_by_id(id);
746         if(idx == -1) {
747                 X509err(X509_F_X509_SET_PURPOSE_AND_TRUST,
748                                         X509_R_UNKNOWN_TRUST_ID);
749                 return 0;
750         }
751         ptmp = X509_PURPOSE_iget(idx);
752         if(purp) *purp = id;
753         if(trust) *trust = ptmp->trust_id;
754         return 1;
755 }
756
757 IMPLEMENT_STACK_OF(X509)
758 IMPLEMENT_ASN1_SET_OF(X509)
759
760 IMPLEMENT_STACK_OF(X509_NAME)
761
762 IMPLEMENT_STACK_OF(X509_ATTRIBUTE)
763 IMPLEMENT_ASN1_SET_OF(X509_ATTRIBUTE)