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