crypto/x509v3/v3_crld.c

   1 /* v3_crld.c */
   2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
   3  * project 1999.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1999, 2005 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58
  59 #include <stdio.h>
  60 #include "cryptlib.h"
  61 #include <openssl/conf.h>
  62 #include <openssl/asn1.h>
  63 #include <openssl/asn1t.h>
  64 #include <openssl/x509v3.h>
  65
  66 static void *v2i_crld(X509V3_EXT_METHOD *method,
  67                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
  68 static int i2r_crldp(X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
  69                                                                 int indent);
  70
  71 X509V3_EXT_METHOD v3_crld =
  72         {
  73         NID_crl_distribution_points, 0, ASN1_ITEM_ref(CRL_DIST_POINTS),
  74         0,0,0,0,
  75         0,0,
  76         0,
  77         v2i_crld,
  78         i2r_crldp,0,
  79         NULL
  80         };
  81
  82 static STACK_OF(GENERAL_NAME) *gnames_from_sectname(X509V3_CTX *ctx, char *sect)
  83         {
  84         STACK_OF(CONF_VALUE) *gnsect;
  85         STACK_OF(GENERAL_NAME) *gens;
  86         if (*sect == '@')
  87                 gnsect = X509V3_get_section(ctx, sect + 1);
  88         else
  89                 gnsect = X509V3_parse_list(sect);
  90         if (!gnsect)
  91                 {
  92                 X509V3err(X509V3_F_GNAMES_FROM_SECTNAME,
  93                                                 X509V3_R_SECTION_NOT_FOUND);
  94                 return NULL;
  95                 }
  96         gens = v2i_GENERAL_NAMES(NULL, ctx, gnsect);
  97         if (*sect == '@')
  98                 X509V3_section_free(ctx, gnsect);
  99         else
 100                 sk_CONF_VALUE_pop_free(gnsect, X509V3_conf_free);
 101         return gens;
 102         }
 103
 104 static int get_dist_point_name(DIST_POINT_NAME **pdp, X509V3_CTX *ctx,
 105                                                         CONF_VALUE *cnf)
 106         {
 107         STACK_OF(GENERAL_NAME) *fnm = NULL;
 108         STACK_OF(X509_NAME_ENTRY) *rnm = NULL;
 109         if (!strncmp(cnf->name, "fullname", 9))
 110                 {
 111                 fnm = gnames_from_sectname(ctx, cnf->value);
 112                 if (!fnm)
 113                         goto err;
 114                 }
 115         else if (!strcmp(cnf->name, "relativename"))
 116                 {
 117                 int ret;
 118                 STACK_OF(CONF_VALUE) *dnsect;
 119                 X509_NAME *nm;
 120                 nm = X509_NAME_new();
 121                 if (!nm)
 122                         return -1;
 123                 dnsect = X509V3_get_section(ctx, cnf->value);
 124                 if (!dnsect)
 125                         {
 126                         X509V3err(X509V3_F_GET_DIST_POINT_NAME,
 127                                                 X509V3_R_SECTION_NOT_FOUND);
 128                         return -1;
 129                         }
 130                 ret = X509V3_NAME_from_section(nm, dnsect, MBSTRING_ASC);
 131                 X509V3_section_free(ctx, dnsect);
 132                 rnm = nm->entries;
 133                 nm->entries = NULL;
 134                 X509_NAME_free(nm);
 135                 if (!ret || sk_X509_NAME_ENTRY_num(rnm) <= 0)
 136                         goto err;
 137                 /* Since its a name fragment can't have more than one
 138                  * RDNSequence
 139                  */
 140                 if (sk_X509_NAME_ENTRY_value(rnm,
 141                                 sk_X509_NAME_ENTRY_num(rnm) - 1)->set)
 142                         {
 143                         X509V3err(X509V3_F_GET_DIST_POINT_NAME,
 144                                                 X509V3_R_INVAID_MULTIPLE_RDNS);
 145                         goto err;
 146                         }
 147                 }
 148         else
 149                 return 0;
 150
 151         if (*pdp)
 152                 {
 153                 X509V3err(X509V3_F_GET_DIST_POINT_NAME,
 154                                                 X509V3_R_DISTPOINT_ALREADY_SET);
 155                 goto err;
 156                 }
 157
 158         *pdp = DIST_POINT_NAME_new();
 159         if (!*pdp)
 160                 goto err;
 161         if (fnm)
 162                 {
 163                 (*pdp)->type = 0;
 164                 (*pdp)->name.fullname = fnm;
 165                 }
 166         else
 167                 {
 168                 (*pdp)->type = 1;
 169                 (*pdp)->name.relativename = rnm;
 170                 }
 171
 172         return 1;
 173
 174         err:
 175         if (fnm)
 176                 sk_GENERAL_NAME_pop_free(fnm, GENERAL_NAME_free);
 177         if (rnm)
 178                 sk_X509_NAME_ENTRY_pop_free(rnm, X509_NAME_ENTRY_free);
 179         return -1;
 180         }
 181
 182
 183 static const BIT_STRING_BITNAME reason_flags[] = {
 184 {1, "Key Compromise", "keyCompromise"},
 185 {2, "CA Compromise", "CACompromise"},
 186 {3, "Affiliation Changed", "affiliationChanged"},
 187 {4, "Superseded", "superseded"},
 188 {5, "Cessation Of Operation", "cessationOfOperation"},
 189 {6, "Certificate Hold", "certificateHold"},
 190 {7, "Privilege Withdrawn", "privilegeWithdrawn"},
 191 {8, "AA Compromise", "AACompromise"},
 192 {-1, NULL, NULL}
 193 };
 194
 195 static int set_reasons(ASN1_BIT_STRING **preas, char *value)
 196         {
 197         STACK_OF(CONF_VALUE) *rsk = NULL;
 198         const BIT_STRING_BITNAME *pbn;
 199         const char *bnam;
 200         int i, ret = 0;
 201         rsk = X509V3_parse_list(value);
 202         if (!rsk)
 203                 return 0;
 204         if (*preas)
 205                 return 0;
 206         for (i = 0; i < sk_CONF_VALUE_num(rsk); i++)
 207                 {
 208                 bnam = sk_CONF_VALUE_value(rsk, i)->name;
 209                 if (!*preas)
 210                         {
 211                         *preas = ASN1_BIT_STRING_new();
 212                         if (!*preas)
 213                                 goto err;
 214                         }
 215                 for (pbn = reason_flags; pbn->lname; pbn++)
 216                         {
 217                         if (!strcmp(pbn->sname, bnam))
 218                                 {
 219                                 if (!ASN1_BIT_STRING_set_bit(*preas,
 220                                                         pbn->bitnum, 1))
 221                                         goto err;
 222                                 break;
 223                                 }
 224                         }
 225                 if (!pbn->lname)
 226                         goto err;
 227                 }
 228         ret = 1;
 229
 230         err:
 231         sk_CONF_VALUE_pop_free(rsk, X509V3_conf_free);
 232         return ret;
 233         }
 234
 235 static int print_reasons(BIO *out, const char *rname,
 236                         ASN1_BIT_STRING *rflags, int indent)
 237         {
 238         int first = 1;
 239         const BIT_STRING_BITNAME *pbn;
 240         BIO_printf(out, "%*s%s:\n%*s", indent, "", rname, indent + 2, "");
 241         for (pbn = reason_flags; pbn->lname; pbn++)
 242                 {
 243                 if (ASN1_BIT_STRING_get_bit(rflags, pbn->bitnum))
 244                         {
 245                         if (first)
 246                                 first = 0;
 247                         else
 248                                 BIO_puts(out, ", ");
 249                         BIO_puts(out, pbn->lname);
 250                         }
 251                 }
 252         if (first)
 253                 BIO_puts(out, "<EMPTY>\n");
 254         else
 255                 BIO_puts(out, "\n");
 256         return 1;
 257         }
 258
 259 static DIST_POINT *crldp_from_section(X509V3_CTX *ctx,
 260                                                 STACK_OF(CONF_VALUE) *nval)
 261         {
 262         int i;
 263         CONF_VALUE *cnf;
 264         DIST_POINT *point = NULL;
 265         point = DIST_POINT_new();
 266         if (!point)
 267                 goto err;
 268         for(i = 0; i < sk_CONF_VALUE_num(nval); i++)
 269                 {
 270                 int ret;
 271                 cnf = sk_CONF_VALUE_value(nval, i);
 272                 ret = get_dist_point_name(&point->distpoint, ctx, cnf);
 273                 if (ret > 0)
 274                         continue;
 275                 if (ret < 0)
 276                         goto err;
 277                 if (!strcmp(cnf->name, "reasons"))
 278                         {
 279                         if (!set_reasons(&point->reasons, cnf->value))
 280                                 goto err;
 281                         }
 282                 else if (!strcmp(cnf->name, "CRLissuer"))
 283                         {
 284                         point->CRLissuer =
 285                                 gnames_from_sectname(ctx, cnf->value);
 286                         if (!point->CRLissuer)
 287                                 goto err;
 288                         }
 289                 }
 290
 291         return point;
 292
 293
 294         err:
 295         if (point)
 296                 DIST_POINT_free(point);
 297         return NULL;
 298         }
 299
 300 static void *v2i_crld(X509V3_EXT_METHOD *method,
 301                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
 302         {
 303         STACK_OF(DIST_POINT) *crld = NULL;
 304         GENERAL_NAMES *gens = NULL;
 305         GENERAL_NAME *gen = NULL;
 306         CONF_VALUE *cnf;
 307         int i;
 308         if(!(crld = sk_DIST_POINT_new_null())) goto merr;
 309         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 310                 DIST_POINT *point;
 311                 cnf = sk_CONF_VALUE_value(nval, i);
 312                 if (!cnf->value)
 313                         {
 314                         STACK_OF(CONF_VALUE) *dpsect;
 315                         dpsect = X509V3_get_section(ctx, cnf->name);
 316                         if (!dpsect)
 317                                 goto err;
 318                         point = crldp_from_section(ctx, dpsect);
 319                         X509V3_section_free(ctx, dpsect);
 320                         if (!point)
 321                                 goto err;
 322                         if(!sk_DIST_POINT_push(crld, point))
 323                                 {
 324                                 DIST_POINT_free(point);
 325                                 goto merr;
 326                                 }
 327                         }
 328                 else
 329                         {
 330                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
 331                                 goto err;
 332                         if(!(gens = GENERAL_NAMES_new()))
 333                                 goto merr;
 334                         if(!sk_GENERAL_NAME_push(gens, gen))
 335                                 goto merr;
 336                         gen = NULL;
 337                         if(!(point = DIST_POINT_new()))
 338                                 goto merr;
 339                         if(!sk_DIST_POINT_push(crld, point))
 340                                 {
 341                                 DIST_POINT_free(point);
 342                                 goto merr;
 343                                 }
 344                         if(!(point->distpoint = DIST_POINT_NAME_new()))
 345                                 goto merr;
 346                         point->distpoint->name.fullname = gens;
 347                         point->distpoint->type = 0;
 348                         gens = NULL;
 349                         }
 350         }
 351         return crld;
 352
 353         merr:
 354         X509V3err(X509V3_F_V2I_CRLD,ERR_R_MALLOC_FAILURE);
 355         err:
 356         GENERAL_NAME_free(gen);
 357         GENERAL_NAMES_free(gens);
 358         sk_DIST_POINT_pop_free(crld, DIST_POINT_free);
 359         return NULL;
 360 }
 361
 362 IMPLEMENT_STACK_OF(DIST_POINT)
 363 IMPLEMENT_ASN1_SET_OF(DIST_POINT)
 364
 365
 366 ASN1_CHOICE(DIST_POINT_NAME) = {
 367         ASN1_IMP_SEQUENCE_OF(DIST_POINT_NAME, name.fullname, GENERAL_NAME, 0),
 368         ASN1_IMP_SET_OF(DIST_POINT_NAME, name.relativename, X509_NAME_ENTRY, 1)
 369 } ASN1_CHOICE_END(DIST_POINT_NAME)
 370
 371 IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT_NAME)
 372
 373 ASN1_SEQUENCE(DIST_POINT) = {
 374         ASN1_EXP_OPT(DIST_POINT, distpoint, DIST_POINT_NAME, 0),
 375         ASN1_IMP_OPT(DIST_POINT, reasons, ASN1_BIT_STRING, 1),
 376         ASN1_IMP_SEQUENCE_OF_OPT(DIST_POINT, CRLissuer, GENERAL_NAME, 2)
 377 } ASN1_SEQUENCE_END(DIST_POINT)
 378
 379 IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT)
 380
 381 ASN1_ITEM_TEMPLATE(CRL_DIST_POINTS) =
 382         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, CRLDistributionPoints, DIST_POINT)
 383 ASN1_ITEM_TEMPLATE_END(CRL_DIST_POINTS)
 384
 385 IMPLEMENT_ASN1_FUNCTIONS(CRL_DIST_POINTS)
 386
 387 ASN1_SEQUENCE(ISSUING_DIST_POINT) = {
 388         ASN1_EXP_OPT(ISSUING_DIST_POINT, distpoint, DIST_POINT_NAME, 0),
 389         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyuser, ASN1_FBOOLEAN, 1),
 390         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyCA, ASN1_FBOOLEAN, 2),
 391         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlysomereasons, ASN1_BIT_STRING, 3),
 392         ASN1_IMP_OPT(ISSUING_DIST_POINT, indirectCRL, ASN1_FBOOLEAN, 4),
 393         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyattr, ASN1_FBOOLEAN, 5)
 394 } ASN1_SEQUENCE_END(ISSUING_DIST_POINT)
 395
 396 static int i2r_idp(X509V3_EXT_METHOD *method,
 397              void *pidp, BIO *out, int indent);
 398
 399 X509V3_EXT_METHOD v3_idp =
 400         {
 401         NID_issuing_distribution_point, X509V3_EXT_MULTILINE,
 402         ASN1_ITEM_ref(ISSUING_DIST_POINT),
 403         0,0,0,0,
 404         0,0,
 405         0,0,
 406         i2r_idp,0,
 407         NULL
 408         };
 409
 410 static int print_gens(BIO *out, STACK_OF(GENERAL_NAME) *gens, int indent)
 411         {
 412         int i;
 413         for (i = 0; i < sk_GENERAL_NAME_num(gens); i++)
 414                 {
 415                 BIO_printf(out, "%*s", indent + 2, "");
 416                 GENERAL_NAME_print(out, sk_GENERAL_NAME_value(gens, i));
 417                 BIO_puts(out, "\n");
 418                 }
 419         return 1;
 420         }
 421
 422 static int print_distpoint(BIO *out, DIST_POINT_NAME *dpn, int indent)
 423         {
 424         if (dpn->type == 0)
 425                 {
 426                 BIO_printf(out, "%*sFull Name:\n", indent, "");
 427                 print_gens(out, dpn->name.fullname, indent);
 428                 }
 429         else
 430                 {
 431                 X509_NAME ntmp;
 432                 ntmp.entries = dpn->name.relativename;
 433                 BIO_printf(out, "%*sRelative Name:\n%*s",
 434                                                 indent, "", indent + 2, "");
 435                 X509_NAME_print_ex(out, &ntmp, 0, XN_FLAG_ONELINE);
 436                 BIO_puts(out, "\n");
 437                 }
 438         return 1;
 439         }
 440
 441 static int i2r_idp(X509V3_EXT_METHOD *method, void *pidp, BIO *out, int indent)
 442         {
 443         ISSUING_DIST_POINT *idp = pidp;
 444         if (idp->distpoint)
 445                 print_distpoint(out, idp->distpoint, indent);
 446         if (idp->onlyuser > 0)
 447                 BIO_printf(out, "%*sOnly User Certificates\n", indent, "");
 448         if (idp->onlyCA > 0)
 449                 BIO_printf(out, "%*sOnly CA Certificates\n", indent, "");
 450         if (idp->indirectCRL > 0)
 451                 BIO_printf(out, "%*sIndirect CRL\n", indent, "");
 452         if (idp->onlysomereasons)
 453                 print_reasons(out, "Only Some Reasons",
 454                                 idp->onlysomereasons, indent);
 455         if (idp->onlyattr > 0)
 456                 BIO_printf(out, "%*sOnly Attribute Certificates\n", indent, "");
 457         if (!idp->distpoint && (idp->onlyuser <= 0) && (idp->onlyCA <= 0)
 458                 && (idp->indirectCRL <= 0) && !idp->onlysomereasons
 459                 && (idp->onlyattr <= 0))
 460                 BIO_printf(out, "%*s<EMPTY>\n", indent, "");
 461
 462         return 1;
 463         }
 464
 465 static int i2r_crldp(X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
 466                                                                 int indent)
 467         {
 468         STACK_OF(DIST_POINT) *crld = pcrldp;
 469         DIST_POINT *point;
 470         int i;
 471         for(i = 0; i < sk_DIST_POINT_num(crld); i++)
 472                 {
 473                 BIO_puts(out, "\n");
 474                 point = sk_DIST_POINT_value(crld, i);
 475                 if(point->distpoint)
 476                         print_distpoint(out, point->distpoint, indent);
 477                 if(point->reasons)
 478                         print_reasons(out, "Reasons", point->reasons,
 479                                                                 indent);
 480                 if(point->CRLissuer)
 481                         {
 482                         BIO_printf(out, "%*sCRL Issuer:\n", indent, "");
 483                         print_gens(out, point->CRLissuer, indent);
 484                         }
 485                 }
 486         return 1;
 487         }