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_OF(CRYPTO_EX_DATA_FUNCS) *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->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 > 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->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, 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                                 ctx->error=X509_V_ERR_CERT_SIGNATURE_FAILURE;
 440                                 ctx->current_cert=xs;
 441                                 ok=(*cb)(0,ctx);
 442                                 if (!ok)
 443                                         {
 444                                         EVP_PKEY_free(pkey);
 445                                         goto end;
 446                                         }
 447                                 }
 448                         EVP_PKEY_free(pkey);
 449                         pkey=NULL;
 450
 451                         i=X509_cmp_current_time(X509_get_notBefore(xs));
 452                         if (i == 0)
 453                                 {
 454                                 ctx->error=X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD;
 455                                 ctx->current_cert=xs;
 456                                 ok=(*cb)(0,ctx);
 457                                 if (!ok) goto end;
 458                                 }
 459                         if (i > 0)
 460                                 {
 461                                 ctx->error=X509_V_ERR_CERT_NOT_YET_VALID;
 462                                 ctx->current_cert=xs;
 463                                 ok=(*cb)(0,ctx);
 464                                 if (!ok) goto end;
 465                                 }
 466                         xs->valid=1;
 467                         }
 468
 469                 i=X509_cmp_current_time(X509_get_notAfter(xs));
 470                 if (i == 0)
 471                         {
 472                         ctx->error=X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD;
 473                         ctx->current_cert=xs;
 474                         ok=(*cb)(0,ctx);
 475                         if (!ok) goto end;
 476                         }
 477
 478                 if (i < 0)
 479                         {
 480                         ctx->error=X509_V_ERR_CERT_HAS_EXPIRED;
 481                         ctx->current_cert=xs;
 482                         ok=(*cb)(0,ctx);
 483                         if (!ok) goto end;
 484                         }
 485
 486                 /* CRL CHECK */
 487
 488                 /* The last error (if any) is still in the error value */
 489                 ctx->current_cert=xs;
 490                 ok=(*cb)(1,ctx);
 491                 if (!ok) goto end;
 492
 493                 n--;
 494                 if (n >= 0)
 495                         {
 496                         xi=xs;
 497                         xs=sk_X509_value(ctx->chain,n);
 498                         }
 499                 }
 500         ok=1;
 501 end:
 502         return(ok);
 503         }
 504
 505 int X509_cmp_current_time(ASN1_TIME *ctm)
 506         {
 507         char *str;
 508         ASN1_TIME atm;
 509         time_t offset;
 510         char buff1[24],buff2[24],*p;
 511         int i,j;
 512
 513         p=buff1;
 514         i=ctm->length;
 515         str=(char *)ctm->data;
 516         if(ctm->type == V_ASN1_UTCTIME) {
 517                 if ((i < 11) || (i > 17)) return(0);
 518                 memcpy(p,str,10);
 519                 p+=10;
 520                 str+=10;
 521         } else {
 522                 if(i < 13) return 0;
 523                 memcpy(p,str,12);
 524                 p+=12;
 525                 str+=12;
 526         }
 527
 528         if ((*str == 'Z') || (*str == '-') || (*str == '+'))
 529                 { *(p++)='0'; *(p++)='0'; }
 530         else
 531                 {
 532                 *(p++)= *(str++);
 533                 *(p++)= *(str++);
 534                 /* Skip any fractional seconds... */
 535                 if(*str == '.')
 536                         {
 537                         str++;
 538                         while((*str >= '0') && (*str <= '9')) str++;
 539                         }
 540
 541         }
 542         *(p++)='Z';
 543         *(p++)='\0';
 544
 545         if (*str == 'Z')
 546                 offset=0;
 547         else
 548                 {
 549                 if ((*str != '+') && (str[5] != '-'))
 550                         return(0);
 551                 offset=((str[1]-'0')*10+(str[2]-'0'))*60;
 552                 offset+=(str[3]-'0')*10+(str[4]-'0');
 553                 if (*str == '-')
 554                         offset= -offset;
 555                 }
 556         atm.type=ctm->type;
 557         atm.length=sizeof(buff2);
 558         atm.data=(unsigned char *)buff2;
 559
 560         X509_gmtime_adj(&atm,-offset*60);
 561
 562         if(ctm->type == V_ASN1_UTCTIME)
 563                 {
 564                 i=(buff1[0]-'0')*10+(buff1[1]-'0');
 565                 if (i < 50) i+=100; /* cf. RFC 2459 */
 566                 j=(buff2[0]-'0')*10+(buff2[1]-'0');
 567                 if (j < 50) j+=100;
 568
 569                 if (i < j) return (-1);
 570                 if (i > j) return (1);
 571                 }
 572         i=strcmp(buff1,buff2);
 573         if (i == 0) /* wait a second then return younger :-) */
 574                 return(-1);
 575         else
 576                 return(i);
 577         }
 578
 579 ASN1_TIME *X509_gmtime_adj(ASN1_TIME *s, long adj)
 580         {
 581         time_t t;
 582
 583         time(&t);
 584         t+=adj;
 585         if(!s) return ASN1_TIME_set(s, t);
 586         if(s->type == V_ASN1_UTCTIME) return(ASN1_UTCTIME_set(s,t));
 587         return ASN1_GENERALIZEDTIME_set(s, t);
 588         }
 589
 590 int X509_get_pubkey_parameters(EVP_PKEY *pkey, STACK_OF(X509) *chain)
 591         {
 592         EVP_PKEY *ktmp=NULL,*ktmp2;
 593         int i,j;
 594
 595         if ((pkey != NULL) && !EVP_PKEY_missing_parameters(pkey)) return(1);
 596
 597         for (i=0; i<sk_X509_num(chain); i++)
 598                 {
 599                 ktmp=X509_get_pubkey(sk_X509_value(chain,i));
 600                 if (ktmp == NULL)
 601                         {
 602                         X509err(X509_F_X509_GET_PUBKEY_PARAMETERS,X509_R_UNABLE_TO_GET_CERTS_PUBLIC_KEY);
 603                         return(0);
 604                         }
 605                 if (!EVP_PKEY_missing_parameters(ktmp))
 606                         break;
 607                 else
 608                         {
 609                         EVP_PKEY_free(ktmp);
 610                         ktmp=NULL;
 611                         }
 612                 }
 613         if (ktmp == NULL)
 614                 {
 615                 X509err(X509_F_X509_GET_PUBKEY_PARAMETERS,X509_R_UNABLE_TO_FIND_PARAMETERS_IN_CHAIN);
 616                 return(0);
 617                 }
 618
 619         /* first, populate the other certs */
 620         for (j=i-1; j >= 0; j--)
 621                 {
 622                 ktmp2=X509_get_pubkey(sk_X509_value(chain,j));
 623                 EVP_PKEY_copy_parameters(ktmp2,ktmp);
 624                 EVP_PKEY_free(ktmp2);
 625                 }
 626
 627         if (pkey != NULL) EVP_PKEY_copy_parameters(pkey,ktmp);
 628         EVP_PKEY_free(ktmp);
 629         return(1);
 630         }
 631
 632 int X509_STORE_add_cert(X509_STORE *ctx, X509 *x)
 633         {
 634         X509_OBJECT *obj,*r;
 635         int ret=1;
 636
 637         if (x == NULL) return(0);
 638         obj=(X509_OBJECT *)OPENSSL_malloc(sizeof(X509_OBJECT));
 639         if (obj == NULL)
 640                 {
 641                 X509err(X509_F_X509_STORE_ADD_CERT,ERR_R_MALLOC_FAILURE);
 642                 return(0);
 643                 }
 644         obj->type=X509_LU_X509;
 645         obj->data.x509=x;
 646
 647         CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
 648
 649         X509_OBJECT_up_ref_count(obj);
 650
 651         r=(X509_OBJECT *)lh_insert(ctx->certs,obj);
 652         if (r != NULL)
 653                 { /* oops, put it back */
 654                 lh_delete(ctx->certs,obj);
 655                 X509_OBJECT_free_contents(obj);
 656                 OPENSSL_free(obj);
 657                 lh_insert(ctx->certs,r);
 658                 X509err(X509_F_X509_STORE_ADD_CERT,X509_R_CERT_ALREADY_IN_HASH_TABLE);
 659                 ret=0;
 660                 }
 661
 662         CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
 663
 664         return(ret);
 665         }
 666
 667 int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x)
 668         {
 669         X509_OBJECT *obj,*r;
 670         int ret=1;
 671
 672         if (x == NULL) return(0);
 673         obj=(X509_OBJECT *)OPENSSL_malloc(sizeof(X509_OBJECT));
 674         if (obj == NULL)
 675                 {
 676                 X509err(X509_F_X509_STORE_ADD_CRL,ERR_R_MALLOC_FAILURE);
 677                 return(0);
 678                 }
 679         obj->type=X509_LU_CRL;
 680         obj->data.crl=x;
 681
 682         CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
 683
 684         X509_OBJECT_up_ref_count(obj);
 685
 686         r=(X509_OBJECT *)lh_insert(ctx->certs,obj);
 687         if (r != NULL)
 688                 { /* oops, put it back */
 689                 lh_delete(ctx->certs,obj);
 690                 X509_OBJECT_free_contents(obj);
 691                 OPENSSL_free(obj);
 692                 lh_insert(ctx->certs,r);
 693                 X509err(X509_F_X509_STORE_ADD_CRL,X509_R_CERT_ALREADY_IN_HASH_TABLE);
 694                 ret=0;
 695                 }
 696
 697         CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
 698
 699         return(ret);
 700         }
 701
 702 int X509_STORE_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
 703              CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
 704         {
 705         x509_store_ctx_num++;
 706         return(CRYPTO_get_ex_new_index(x509_store_ctx_num-1,
 707                 &x509_store_ctx_method,
 708                 argl,argp,new_func,dup_func,free_func));
 709         }
 710
 711 int X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx, int idx, void *data)
 712         {
 713         return(CRYPTO_set_ex_data(&ctx->ex_data,idx,data));
 714         }
 715
 716 void *X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx, int idx)
 717         {
 718         return(CRYPTO_get_ex_data(&ctx->ex_data,idx));
 719         }
 720
 721 int X509_STORE_CTX_get_error(X509_STORE_CTX *ctx)
 722         {
 723         return(ctx->error);
 724         }
 725
 726 void X509_STORE_CTX_set_error(X509_STORE_CTX *ctx, int err)
 727         {
 728         ctx->error=err;
 729         }
 730
 731 int X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx)
 732         {
 733         return(ctx->error_depth);
 734         }
 735
 736 X509 *X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx)
 737         {
 738         return(ctx->current_cert);
 739         }
 740
 741 STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx)
 742         {
 743         return(ctx->chain);
 744         }
 745
 746 STACK_OF(X509) *X509_STORE_CTX_get1_chain(X509_STORE_CTX *ctx)
 747         {
 748         int i;
 749         X509 *x;
 750         STACK_OF(X509) *chain;
 751         if(!ctx->chain || !(chain = sk_X509_dup(ctx->chain))) return NULL;
 752         for(i = 0; i < sk_X509_num(chain); i++) {
 753                 x = sk_X509_value(chain, i);
 754                 CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
 755         }
 756         return(chain);
 757         }
 758
 759 void X509_STORE_CTX_set_cert(X509_STORE_CTX *ctx, X509 *x)
 760         {
 761         ctx->cert=x;
 762         }
 763
 764 void X509_STORE_CTX_set_chain(X509_STORE_CTX *ctx, STACK_OF(X509) *sk)
 765         {
 766         ctx->untrusted=sk;
 767         }
 768
 769 int X509_STORE_CTX_set_purpose(X509_STORE_CTX *ctx, int purpose)
 770         {
 771         return X509_STORE_CTX_purpose_inherit(ctx, 0, purpose, 0);
 772         }
 773
 774 int X509_STORE_CTX_set_trust(X509_STORE_CTX *ctx, int trust)
 775         {
 776         return X509_STORE_CTX_purpose_inherit(ctx, 0, 0, trust);
 777         }
 778
 779 /* This function is used to set the X509_STORE_CTX purpose and trust
 780  * values. This is intended to be used when another structure has its
 781  * own trust and purpose values which (if set) will be inherited by
 782  * the ctx. If they aren't set then we will usually have a default
 783  * purpose in mind which should then be used to set the trust value.
 784  * An example of this is SSL use: an SSL structure will have its own
 785  * purpose and trust settings which the application can set: if they
 786  * aren't set then we use the default of SSL client/server.
 787  */
 788
 789 int X509_STORE_CTX_purpose_inherit(X509_STORE_CTX *ctx, int def_purpose,
 790                                 int purpose, int trust)
 791 {
 792         int idx;
 793         /* If purpose not set use default */
 794         if(!purpose) purpose = def_purpose;
 795         /* If we have a purpose then check it is valid */
 796         if(purpose) {
 797                 X509_PURPOSE *ptmp;
 798                 idx = X509_PURPOSE_get_by_id(purpose);
 799                 if(idx == -1) {
 800                         X509err(X509_F_X509_STORE_CTX_PURPOSE_INHERIT,
 801                                                 X509_R_UNKNOWN_PURPOSE_ID);
 802                         return 0;
 803                 }
 804                 ptmp = X509_PURPOSE_get0(idx);
 805                 if(ptmp->trust == X509_TRUST_DEFAULT) {
 806                         idx = X509_PURPOSE_get_by_id(def_purpose);
 807                         if(idx == -1) {
 808                                 X509err(X509_F_X509_STORE_CTX_PURPOSE_INHERIT,
 809                                                 X509_R_UNKNOWN_PURPOSE_ID);
 810                                 return 0;
 811                         }
 812                         ptmp = X509_PURPOSE_get0(idx);
 813                 }
 814                 /* If trust not set then get from purpose default */
 815                 if(!trust) trust = ptmp->trust;
 816         }
 817         if(trust) {
 818                 idx = X509_TRUST_get_by_id(trust);
 819                 if(idx == -1) {
 820                         X509err(X509_F_X509_STORE_CTX_PURPOSE_INHERIT,
 821                                                 X509_R_UNKNOWN_TRUST_ID);
 822                         return 0;
 823                 }
 824         }
 825
 826         if(purpose) ctx->purpose = purpose;
 827         if(trust) ctx->trust = trust;
 828         return 1;
 829 }
 830
 831
 832 IMPLEMENT_STACK_OF(X509)
 833 IMPLEMENT_ASN1_SET_OF(X509)
 834
 835 IMPLEMENT_STACK_OF(X509_NAME)
 836
 837 IMPLEMENT_STACK_OF(X509_ATTRIBUTE)
 838 IMPLEMENT_ASN1_SET_OF(X509_ATTRIBUTE)