3d1b38a0194c99b0b43da00523656cf39559e2b1
[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 internal_verify(X509_STORE_CTX *ctx);
76 const char *X509_version="X.509" OPENSSL_VERSION_PTEXT;
77
78 static STACK *x509_store_ctx_method=NULL;
79 static int x509_store_ctx_num=0;
80 #if 0
81 static int x509_store_num=1;
82 static STACK *x509_store_method=NULL;
83 #endif
84
85 static int null_callback(int ok, X509_STORE_CTX *e)
86         {
87         return(ok);
88         }
89
90 #if 0
91 static int x509_subject_cmp(X509 **a, X509 **b)
92         {
93         return(X509_subject_name_cmp(*a,*b));
94         }
95 #endif
96
97 int X509_verify_cert(X509_STORE_CTX *ctx)
98         {
99         X509 *x,*xtmp,*chain_ss=NULL;
100         X509_NAME *xn;
101         X509_OBJECT obj;
102         int depth,i,ok=0;
103         int num;
104         int (*cb)();
105         STACK_OF(X509) *sktmp=NULL;
106
107         if (ctx->cert == NULL)
108                 {
109                 X509err(X509_F_X509_VERIFY_CERT,X509_R_NO_CERT_SET_FOR_US_TO_VERIFY);
110                 return(-1);
111                 }
112
113         cb=ctx->ctx->verify_cb;
114         if (cb == NULL) cb=null_callback;
115
116         /* first we make sure the chain we are going to build is
117          * present and that the first entry is in place */
118         if (ctx->chain == NULL)
119                 {
120                 if (    ((ctx->chain=sk_X509_new_null()) == NULL) ||
121                         (!sk_X509_push(ctx->chain,ctx->cert)))
122                         {
123                         X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
124                         goto end;
125                         }
126                 CRYPTO_add(&ctx->cert->references,1,CRYPTO_LOCK_X509);
127                 ctx->last_untrusted=1;
128                 }
129
130         /* We use a temporary STACK so we can chop and hack at it */
131         if (ctx->untrusted != NULL
132             && (sktmp=sk_X509_dup(ctx->untrusted)) == NULL)
133                 {
134                 X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
135                 goto end;
136                 }
137
138         num=sk_X509_num(ctx->chain);
139         x=sk_X509_value(ctx->chain,num-1);
140         depth=ctx->depth;
141
142
143         for (;;)
144                 {
145                 /* If we have enough, we break */
146                 if (depth < num) break; /* FIXME: If this happens, we should take
147                                          * note of it and, if appropriate, use the
148                                          * X509_V_ERR_CERT_CHAIN_TOO_LONG error
149                                          * code later.
150                                          */
151
152                 /* If we are self signed, we break */
153                 xn=X509_get_issuer_name(x);
154                 if (X509_NAME_cmp(X509_get_subject_name(x),xn) == 0)
155                         break;
156
157                 /* If we were passed a cert chain, use it first */
158                 if (ctx->untrusted != NULL)
159                         {
160                         xtmp=X509_find_by_subject(sktmp,xn);
161                         if (xtmp != NULL)
162                                 {
163                                 if (!sk_X509_push(ctx->chain,xtmp))
164                                         {
165                                         X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
166                                         goto end;
167                                         }
168                                 CRYPTO_add(&xtmp->references,1,CRYPTO_LOCK_X509);
169                                 sk_X509_delete_ptr(sktmp,xtmp);
170                                 ctx->last_untrusted++;
171                                 x=xtmp;
172                                 num++;
173                                 /* reparse the full chain for
174                                  * the next one */
175                                 continue;
176                                 }
177                         }
178                 break;
179                 }
180
181         /* at this point, chain should contain a list of untrusted
182          * certificates.  We now need to add at least one trusted one,
183          * if possible, otherwise we complain. */
184
185         i=sk_X509_num(ctx->chain);
186         x=sk_X509_value(ctx->chain,i-1);
187         xn = X509_get_subject_name(x);
188         if (X509_NAME_cmp(xn,X509_get_issuer_name(x))
189                 == 0)
190                 {
191                 /* we have a self signed certificate */
192                 if (sk_X509_num(ctx->chain) == 1)
193                         {
194                         /* We have a single self signed certificate: see if
195                          * we can find it in the store. We must have an exact
196                          * match to avoid possible impersonation.
197                          */
198                         ok=X509_STORE_get_by_subject(ctx,X509_LU_X509,xn,&obj);
199                         if ((ok != X509_LU_X509) || X509_cmp(x, obj.data.x509)) 
200                                 {
201                                 ctx->error=X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT;
202                                 ctx->current_cert=x;
203                                 ctx->error_depth=i-1;
204                                 if(ok == X509_LU_X509) X509_OBJECT_free_contents(&obj);
205                                 ok=cb(0,ctx);
206                                 if (!ok) goto end;
207                                 }
208                         else 
209                                 {
210                                 /* We have a match: replace certificate with store version
211                                  * so we get any trust settings.
212                                  */
213                                 X509_free(x);
214                                 x = obj.data.x509;
215                                 sk_X509_set(ctx->chain, i - 1, x);
216                                 ctx->last_untrusted=0;
217                                 }
218                         }
219                 else
220                         {
221                         /* worry more about this one elsewhere */
222                         chain_ss=sk_X509_pop(ctx->chain);
223                         ctx->last_untrusted--;
224                         num--;
225                         x=sk_X509_value(ctx->chain,num-1);
226                         }
227                 }
228
229         /* We now lookup certs from the certificate store */
230         for (;;)
231                 {
232                 /* If we have enough, we break */
233                 if (depth < num) break;
234
235                 /* If we are self signed, we break */
236                 xn=X509_get_issuer_name(x);
237                 if (X509_NAME_cmp(X509_get_subject_name(x),xn) == 0)
238                         break;
239
240                 ok=X509_STORE_get_by_subject(ctx,X509_LU_X509,xn,&obj);
241                 if (ok != X509_LU_X509)
242                         {
243                         if (ok == X509_LU_RETRY)
244                                 {
245                                 X509_OBJECT_free_contents(&obj);
246                                 X509err(X509_F_X509_VERIFY_CERT,X509_R_SHOULD_RETRY);
247                                 return(ok);
248                                 }
249                         else if (ok != X509_LU_FAIL)
250                                 {
251                                 X509_OBJECT_free_contents(&obj);
252                                 /* not good :-(, break anyway */
253                                 return(ok);
254                                 }
255                         break;
256                         }
257                 x=obj.data.x509;
258                 if (!sk_X509_push(ctx->chain,obj.data.x509))
259                         {
260                         X509_OBJECT_free_contents(&obj);
261                         X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
262                         return(0);
263                         }
264                 num++;
265                 }
266
267         /* we now have our chain, lets check it... */
268         xn=X509_get_issuer_name(x);
269         if (X509_NAME_cmp(X509_get_subject_name(x),xn) != 0)
270                 {
271                 if ((chain_ss == NULL) || (X509_NAME_cmp(X509_get_subject_name(chain_ss),xn) != 0))
272                         {
273                         if (ctx->last_untrusted >= num)
274                                 ctx->error=X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY;
275                         else
276                                 ctx->error=X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT;
277                         ctx->current_cert=x;
278                         }
279                 else
280                         {
281
282                         sk_X509_push(ctx->chain,chain_ss);
283                         num++;
284                         ctx->last_untrusted=num;
285                         ctx->current_cert=chain_ss;
286                         ctx->error=X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN;
287                         chain_ss=NULL;
288                         }
289
290                 ctx->error_depth=num-1;
291                 ok=cb(0,ctx);
292                 if (!ok) goto end;
293                 }
294
295         /* We have the chain complete: now we need to check its purpose */
296         if(ctx->chain_purpose > 0) ok = check_chain_purpose(ctx);
297
298         if(!ok) goto end;
299
300         /* We may as well copy down any DSA parameters that are required */
301         X509_get_pubkey_parameters(NULL,ctx->chain);
302
303         /* At this point, we have a chain and just need to verify it */
304         if (ctx->ctx->verify != NULL)
305                 ok=ctx->ctx->verify(ctx);
306         else
307                 ok=internal_verify(ctx);
308         if (0)
309                 {
310 end:
311                 X509_get_pubkey_parameters(NULL,ctx->chain);
312                 }
313         if (sktmp != NULL) sk_X509_free(sktmp);
314         if (chain_ss != NULL) X509_free(chain_ss);
315         return(ok);
316         }
317
318 /* Check a certificate chains extensions for consistency
319  * with the supplied purpose
320  */
321
322 static int check_chain_purpose(X509_STORE_CTX *ctx)
323 {
324 #ifdef NO_CHAIN_VERIFY
325         return 1;
326 #else
327         int i, ok=0;
328         X509 *x;
329         int (*cb)();
330         cb=ctx->ctx->verify_cb;
331         if (cb == NULL) cb=null_callback;
332         /* Check all untrusted certificates */
333         for(i = 0; i < ctx->last_untrusted; i++) {
334                 x = sk_X509_value(ctx->chain, i);
335                 if(!X509_check_purpose(x, ctx->chain_purpose, i)) {
336                         if(i) ctx->error = X509_V_ERR_INVALID_CA;
337                         else ctx->error = X509_V_ERR_INVALID_PURPOSE;
338                         ctx->error_depth = i;
339                         ctx->current_cert = x;
340                         ok=cb(0,ctx);
341                         if(!ok) goto end;
342                 }
343                 /* Check pathlen */
344                 if((i > 1) && (x->ex_pathlen != -1)
345                                         && (i > (x->ex_pathlen + 1))) {
346                         ctx->error = X509_V_ERR_PATH_LENGTH_EXCEEDED;
347                         ctx->error_depth = i;
348                         ctx->current_cert = x;
349                         ok=cb(0,ctx);
350                         if(!ok) goto end;
351                 }
352         }
353         ok = 1;
354         end:
355         return(ok);
356 #endif
357 }
358
359 static int internal_verify(X509_STORE_CTX *ctx)
360         {
361         int i,ok=0,n;
362         X509 *xs,*xi;
363         EVP_PKEY *pkey=NULL;
364         int (*cb)();
365
366         cb=ctx->ctx->verify_cb;
367         if (cb == NULL) cb=null_callback;
368
369         n=sk_X509_num(ctx->chain);
370         ctx->error_depth=n-1;
371         n--;
372         xi=sk_X509_value(ctx->chain,n);
373         if (X509_NAME_cmp(X509_get_subject_name(xi),
374                 X509_get_issuer_name(xi)) == 0)
375                 xs=xi;
376         else
377                 {
378                 if (n <= 0)
379                         {
380                         ctx->error=X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE;
381                         ctx->current_cert=xi;
382                         ok=cb(0,ctx);
383                         goto end;
384                         }
385                 else
386                         {
387                         n--;
388                         ctx->error_depth=n;
389                         xs=sk_X509_value(ctx->chain,n);
390                         }
391                 }
392
393 /*      ctx->error=0;  not needed */
394         while (n >= 0)
395                 {
396                 ctx->error_depth=n;
397                 if (!xs->valid)
398                         {
399                         if ((pkey=X509_get_pubkey(xi)) == NULL)
400                                 {
401                                 ctx->error=X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY;
402                                 ctx->current_cert=xi;
403                                 ok=(*cb)(0,ctx);
404                                 if (!ok) goto end;
405                                 }
406                         if (X509_verify(xs,pkey) <= 0)
407                                 {
408                                 EVP_PKEY_free(pkey);
409                                 ctx->error=X509_V_ERR_CERT_SIGNATURE_FAILURE;
410                                 ctx->current_cert=xs;
411                                 ok=(*cb)(0,ctx);
412                                 if (!ok) goto end;
413                                 }
414                         EVP_PKEY_free(pkey);
415                         pkey=NULL;
416
417                         i=X509_cmp_current_time(X509_get_notBefore(xs));
418                         if (i == 0)
419                                 {
420                                 ctx->error=X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD;
421                                 ctx->current_cert=xs;
422                                 ok=(*cb)(0,ctx);
423                                 if (!ok) goto end;
424                                 }
425                         if (i > 0)
426                                 {
427                                 ctx->error=X509_V_ERR_CERT_NOT_YET_VALID;
428                                 ctx->current_cert=xs;
429                                 ok=(*cb)(0,ctx);
430                                 if (!ok) goto end;
431                                 }
432                         xs->valid=1;
433                         }
434
435                 i=X509_cmp_current_time(X509_get_notAfter(xs));
436                 if (i == 0)
437                         {
438                         ctx->error=X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD;
439                         ctx->current_cert=xs;
440                         ok=(*cb)(0,ctx);
441                         if (!ok) goto end;
442                         }
443
444                 if (i < 0)
445                         {
446                         ctx->error=X509_V_ERR_CERT_HAS_EXPIRED;
447                         ctx->current_cert=xs;
448                         ok=(*cb)(0,ctx);
449                         if (!ok) goto end;
450                         }
451
452                 /* CRL CHECK */
453
454                 /* The last error (if any) is still in the error value */
455                 ctx->current_cert=xs;
456                 ok=(*cb)(1,ctx);
457                 if (!ok) goto end;
458
459                 n--;
460                 if (n >= 0)
461                         {
462                         xi=xs;
463                         xs=sk_X509_value(ctx->chain,n);
464                         }
465                 }
466         ok=1;
467 end:
468         return(ok);
469         }
470
471 int X509_cmp_current_time(ASN1_UTCTIME *ctm)
472         {
473         char *str;
474         ASN1_UTCTIME atm;
475         time_t offset;
476         char buff1[24],buff2[24],*p;
477         int i,j;
478
479         p=buff1;
480         i=ctm->length;
481         str=(char *)ctm->data;
482         if ((i < 11) || (i > 17)) return(0);
483         memcpy(p,str,10);
484         p+=10;
485         str+=10;
486
487         if ((*str == 'Z') || (*str == '-') || (*str == '+'))
488                 { *(p++)='0'; *(p++)='0'; }
489         else    { *(p++)= *(str++); *(p++)= *(str++); }
490         *(p++)='Z';
491         *(p++)='\0';
492
493         if (*str == 'Z')
494                 offset=0;
495         else
496                 {
497                 if ((*str != '+') && (str[5] != '-'))
498                         return(0);
499                 offset=((str[1]-'0')*10+(str[2]-'0'))*60;
500                 offset+=(str[3]-'0')*10+(str[4]-'0');
501                 if (*str == '-')
502                         offset= -offset;
503                 }
504         atm.type=V_ASN1_UTCTIME;
505         atm.length=sizeof(buff2);
506         atm.data=(unsigned char *)buff2;
507
508         X509_gmtime_adj(&atm,-offset);
509
510         i=(buff1[0]-'0')*10+(buff1[1]-'0');
511         if (i < 50) i+=100; /* cf. RFC 2459 */
512         j=(buff2[0]-'0')*10+(buff2[1]-'0');
513         if (j < 50) j+=100;
514
515         if (i < j) return (-1);
516         if (i > j) return (1);
517         i=strcmp(buff1,buff2);
518         if (i == 0) /* wait a second then return younger :-) */
519                 return(-1);
520         else
521                 return(i);
522         }
523
524 ASN1_UTCTIME *X509_gmtime_adj(ASN1_UTCTIME *s, long adj)
525         {
526         time_t t;
527
528         time(&t);
529         t+=adj;
530         return(ASN1_UTCTIME_set(s,t));
531         }
532
533 int X509_get_pubkey_parameters(EVP_PKEY *pkey, STACK_OF(X509) *chain)
534         {
535         EVP_PKEY *ktmp=NULL,*ktmp2;
536         int i,j;
537
538         if ((pkey != NULL) && !EVP_PKEY_missing_parameters(pkey)) return(1);
539
540         for (i=0; i<sk_X509_num(chain); i++)
541                 {
542                 ktmp=X509_get_pubkey(sk_X509_value(chain,i));
543                 if (ktmp == NULL)
544                         {
545                         X509err(X509_F_X509_GET_PUBKEY_PARAMETERS,X509_R_UNABLE_TO_GET_CERTS_PUBLIC_KEY);
546                         return(0);
547                         }
548                 if (!EVP_PKEY_missing_parameters(ktmp))
549                         break;
550                 else
551                         {
552                         EVP_PKEY_free(ktmp);
553                         ktmp=NULL;
554                         }
555                 }
556         if (ktmp == NULL)
557                 {
558                 X509err(X509_F_X509_GET_PUBKEY_PARAMETERS,X509_R_UNABLE_TO_FIND_PARAMETERS_IN_CHAIN);
559                 return(0);
560                 }
561
562         /* first, populate the other certs */
563         for (j=i-1; j >= 0; j--)
564                 {
565                 ktmp2=X509_get_pubkey(sk_X509_value(chain,j));
566                 EVP_PKEY_copy_parameters(ktmp2,ktmp);
567                 EVP_PKEY_free(ktmp2);
568                 }
569         
570         if (pkey != NULL) EVP_PKEY_copy_parameters(pkey,ktmp);
571         EVP_PKEY_free(ktmp);
572         return(1);
573         }
574
575 int X509_STORE_add_cert(X509_STORE *ctx, X509 *x)
576         {
577         X509_OBJECT *obj,*r;
578         int ret=1;
579
580         if (x == NULL) return(0);
581         obj=(X509_OBJECT *)Malloc(sizeof(X509_OBJECT));
582         if (obj == NULL)
583                 {
584                 X509err(X509_F_X509_STORE_ADD_CERT,ERR_R_MALLOC_FAILURE);
585                 return(0);
586                 }
587         obj->type=X509_LU_X509;
588         obj->data.x509=x;
589
590         CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
591
592         X509_OBJECT_up_ref_count(obj);
593
594         r=(X509_OBJECT *)lh_insert(ctx->certs,(char *)obj);
595         if (r != NULL)
596                 { /* oops, put it back */
597                 lh_delete(ctx->certs,(char *)obj);
598                 X509_OBJECT_free_contents(obj);
599                 Free(obj);
600                 lh_insert(ctx->certs,(char *)r);
601                 X509err(X509_F_X509_STORE_ADD_CERT,X509_R_CERT_ALREADY_IN_HASH_TABLE);
602                 ret=0;
603                 }
604
605         CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
606
607         return(ret);    
608         }
609
610 int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x)
611         {
612         X509_OBJECT *obj,*r;
613         int ret=1;
614
615         if (x == NULL) return(0);
616         obj=(X509_OBJECT *)Malloc(sizeof(X509_OBJECT));
617         if (obj == NULL)
618                 {
619                 X509err(X509_F_X509_STORE_ADD_CRL,ERR_R_MALLOC_FAILURE);
620                 return(0);
621                 }
622         obj->type=X509_LU_CRL;
623         obj->data.crl=x;
624
625         CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
626
627         X509_OBJECT_up_ref_count(obj);
628
629         r=(X509_OBJECT *)lh_insert(ctx->certs,(char *)obj);
630         if (r != NULL)
631                 { /* oops, put it back */
632                 lh_delete(ctx->certs,(char *)obj);
633                 X509_OBJECT_free_contents(obj);
634                 Free(obj);
635                 lh_insert(ctx->certs,(char *)r);
636                 X509err(X509_F_X509_STORE_ADD_CRL,X509_R_CERT_ALREADY_IN_HASH_TABLE);
637                 ret=0;
638                 }
639
640         CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
641
642         return(ret);    
643         }
644
645 int X509_STORE_CTX_get_ex_new_index(long argl, char *argp, int (*new_func)(),
646              int (*dup_func)(), void (*free_func)())
647         {
648         x509_store_ctx_num++;
649         return(CRYPTO_get_ex_new_index(x509_store_ctx_num-1,
650                 &x509_store_ctx_method,
651                 argl,argp,new_func,dup_func,free_func));
652         }
653
654 int X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx, int idx, void *data)
655         {
656         return(CRYPTO_set_ex_data(&ctx->ex_data,idx,data));
657         }
658
659 void *X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx, int idx)
660         {
661         return(CRYPTO_get_ex_data(&ctx->ex_data,idx));
662         }
663
664 int X509_STORE_CTX_get_error(X509_STORE_CTX *ctx)
665         {
666         return(ctx->error);
667         }
668
669 void X509_STORE_CTX_set_error(X509_STORE_CTX *ctx, int err)
670         {
671         ctx->error=err;
672         }
673
674 int X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx)
675         {
676         return(ctx->error_depth);
677         }
678
679 X509 *X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx)
680         {
681         return(ctx->current_cert);
682         }
683
684 STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx)
685         {
686         return(ctx->chain);
687         }
688
689 void X509_STORE_CTX_set_cert(X509_STORE_CTX *ctx, X509 *x)
690         {
691         ctx->cert=x;
692         }
693
694 void X509_STORE_CTX_set_chain(X509_STORE_CTX *ctx, STACK_OF(X509) *sk)
695         {
696         ctx->untrusted=sk;
697         }
698
699 void X509_STORE_CTX_chain_purpose(X509_STORE_CTX *ctx, int purpose)
700         {
701         ctx->chain_purpose = purpose;
702         }
703
704 void X509_STORE_CTX_trust_purpose(X509_STORE_CTX *ctx, int purpose)
705         {
706         ctx->trust_purpose = purpose;
707         }
708
709 IMPLEMENT_STACK_OF(X509)
710 IMPLEMENT_ASN1_SET_OF(X509)
711
712 IMPLEMENT_STACK_OF(X509_NAME)
713
714 IMPLEMENT_STACK_OF(X509_ATTRIBUTE)
715 IMPLEMENT_ASN1_SET_OF(X509_ATTRIBUTE)