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)