v3_alt.c revision 167613
1/* v3_alt.c */ 2/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL 3 * project. 4 */ 5/* ==================================================================== 6 * Copyright (c) 1999-2003 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/x509v3.h> 63 64static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval); 65static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval); 66static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p); 67static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens); 68static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx); 69static int do_dirname(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx); 70 71const X509V3_EXT_METHOD v3_alt[] = { 72{ NID_subject_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES), 730,0,0,0, 740,0, 75(X509V3_EXT_I2V)i2v_GENERAL_NAMES, 76(X509V3_EXT_V2I)v2i_subject_alt, 77NULL, NULL, NULL}, 78 79{ NID_issuer_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES), 800,0,0,0, 810,0, 82(X509V3_EXT_I2V)i2v_GENERAL_NAMES, 83(X509V3_EXT_V2I)v2i_issuer_alt, 84NULL, NULL, NULL}, 85}; 86 87STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method, 88 GENERAL_NAMES *gens, STACK_OF(CONF_VALUE) *ret) 89{ 90 int i; 91 GENERAL_NAME *gen; 92 for(i = 0; i < sk_GENERAL_NAME_num(gens); i++) { 93 gen = sk_GENERAL_NAME_value(gens, i); 94 ret = i2v_GENERAL_NAME(method, gen, ret); 95 } 96 if(!ret) return sk_CONF_VALUE_new_null(); 97 return ret; 98} 99 100STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method, 101 GENERAL_NAME *gen, STACK_OF(CONF_VALUE) *ret) 102{ 103 unsigned char *p; 104 char oline[256], htmp[5]; 105 int i; 106 switch (gen->type) 107 { 108 case GEN_OTHERNAME: 109 X509V3_add_value("othername","<unsupported>", &ret); 110 break; 111 112 case GEN_X400: 113 X509V3_add_value("X400Name","<unsupported>", &ret); 114 break; 115 116 case GEN_EDIPARTY: 117 X509V3_add_value("EdiPartyName","<unsupported>", &ret); 118 break; 119 120 case GEN_EMAIL: 121 X509V3_add_value_uchar("email",gen->d.ia5->data, &ret); 122 break; 123 124 case GEN_DNS: 125 X509V3_add_value_uchar("DNS",gen->d.ia5->data, &ret); 126 break; 127 128 case GEN_URI: 129 X509V3_add_value_uchar("URI",gen->d.ia5->data, &ret); 130 break; 131 132 case GEN_DIRNAME: 133 X509_NAME_oneline(gen->d.dirn, oline, 256); 134 X509V3_add_value("DirName",oline, &ret); 135 break; 136 137 case GEN_IPADD: 138 p = gen->d.ip->data; 139 if(gen->d.ip->length == 4) 140 BIO_snprintf(oline, sizeof oline, 141 "%d.%d.%d.%d", p[0], p[1], p[2], p[3]); 142 else if(gen->d.ip->length == 16) 143 { 144 oline[0] = 0; 145 for (i = 0; i < 8; i++) 146 { 147 BIO_snprintf(htmp, sizeof htmp, 148 "%X", p[0] << 8 | p[1]); 149 p += 2; 150 strcat(oline, htmp); 151 if (i != 7) 152 strcat(oline, ":"); 153 } 154 } 155 else 156 { 157 X509V3_add_value("IP Address","<invalid>", &ret); 158 break; 159 } 160 X509V3_add_value("IP Address",oline, &ret); 161 break; 162 163 case GEN_RID: 164 i2t_ASN1_OBJECT(oline, 256, gen->d.rid); 165 X509V3_add_value("Registered ID",oline, &ret); 166 break; 167 } 168 return ret; 169} 170 171int GENERAL_NAME_print(BIO *out, GENERAL_NAME *gen) 172{ 173 unsigned char *p; 174 int i; 175 switch (gen->type) 176 { 177 case GEN_OTHERNAME: 178 BIO_printf(out, "othername:<unsupported>"); 179 break; 180 181 case GEN_X400: 182 BIO_printf(out, "X400Name:<unsupported>"); 183 break; 184 185 case GEN_EDIPARTY: 186 /* Maybe fix this: it is supported now */ 187 BIO_printf(out, "EdiPartyName:<unsupported>"); 188 break; 189 190 case GEN_EMAIL: 191 BIO_printf(out, "email:%s",gen->d.ia5->data); 192 break; 193 194 case GEN_DNS: 195 BIO_printf(out, "DNS:%s",gen->d.ia5->data); 196 break; 197 198 case GEN_URI: 199 BIO_printf(out, "URI:%s",gen->d.ia5->data); 200 break; 201 202 case GEN_DIRNAME: 203 BIO_printf(out, "DirName: "); 204 X509_NAME_print_ex(out, gen->d.dirn, 0, XN_FLAG_ONELINE); 205 break; 206 207 case GEN_IPADD: 208 p = gen->d.ip->data; 209 if(gen->d.ip->length == 4) 210 BIO_printf(out, "IP Address:%d.%d.%d.%d", 211 p[0], p[1], p[2], p[3]); 212 else if(gen->d.ip->length == 16) 213 { 214 BIO_printf(out, "IP Address"); 215 for (i = 0; i < 8; i++) 216 { 217 BIO_printf(out, ":%X", p[0] << 8 | p[1]); 218 p += 2; 219 } 220 BIO_puts(out, "\n"); 221 } 222 else 223 { 224 BIO_printf(out,"IP Address:<invalid>"); 225 break; 226 } 227 break; 228 229 case GEN_RID: 230 BIO_printf(out, "Registered ID"); 231 i2a_ASN1_OBJECT(out, gen->d.rid); 232 break; 233 } 234 return 1; 235} 236 237static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method, 238 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval) 239{ 240 GENERAL_NAMES *gens = NULL; 241 CONF_VALUE *cnf; 242 int i; 243 if(!(gens = sk_GENERAL_NAME_new_null())) { 244 X509V3err(X509V3_F_V2I_ISSUER_ALT,ERR_R_MALLOC_FAILURE); 245 return NULL; 246 } 247 for(i = 0; i < sk_CONF_VALUE_num(nval); i++) { 248 cnf = sk_CONF_VALUE_value(nval, i); 249 if(!name_cmp(cnf->name, "issuer") && cnf->value && 250 !strcmp(cnf->value, "copy")) { 251 if(!copy_issuer(ctx, gens)) goto err; 252 } else { 253 GENERAL_NAME *gen; 254 if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) 255 goto err; 256 sk_GENERAL_NAME_push(gens, gen); 257 } 258 } 259 return gens; 260 err: 261 sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); 262 return NULL; 263} 264 265/* Append subject altname of issuer to issuer alt name of subject */ 266 267static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens) 268{ 269 GENERAL_NAMES *ialt; 270 GENERAL_NAME *gen; 271 X509_EXTENSION *ext; 272 int i; 273 if(ctx && (ctx->flags == CTX_TEST)) return 1; 274 if(!ctx || !ctx->issuer_cert) { 275 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_NO_ISSUER_DETAILS); 276 goto err; 277 } 278 i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1); 279 if(i < 0) return 1; 280 if(!(ext = X509_get_ext(ctx->issuer_cert, i)) || 281 !(ialt = X509V3_EXT_d2i(ext)) ) { 282 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_ISSUER_DECODE_ERROR); 283 goto err; 284 } 285 286 for(i = 0; i < sk_GENERAL_NAME_num(ialt); i++) { 287 gen = sk_GENERAL_NAME_value(ialt, i); 288 if(!sk_GENERAL_NAME_push(gens, gen)) { 289 X509V3err(X509V3_F_COPY_ISSUER,ERR_R_MALLOC_FAILURE); 290 goto err; 291 } 292 } 293 sk_GENERAL_NAME_free(ialt); 294 295 return 1; 296 297 err: 298 return 0; 299 300} 301 302static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method, 303 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval) 304{ 305 GENERAL_NAMES *gens = NULL; 306 CONF_VALUE *cnf; 307 int i; 308 if(!(gens = sk_GENERAL_NAME_new_null())) { 309 X509V3err(X509V3_F_V2I_SUBJECT_ALT,ERR_R_MALLOC_FAILURE); 310 return NULL; 311 } 312 for(i = 0; i < sk_CONF_VALUE_num(nval); i++) { 313 cnf = sk_CONF_VALUE_value(nval, i); 314 if(!name_cmp(cnf->name, "email") && cnf->value && 315 !strcmp(cnf->value, "copy")) { 316 if(!copy_email(ctx, gens, 0)) goto err; 317 } else if(!name_cmp(cnf->name, "email") && cnf->value && 318 !strcmp(cnf->value, "move")) { 319 if(!copy_email(ctx, gens, 1)) goto err; 320 } else { 321 GENERAL_NAME *gen; 322 if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) 323 goto err; 324 sk_GENERAL_NAME_push(gens, gen); 325 } 326 } 327 return gens; 328 err: 329 sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); 330 return NULL; 331} 332 333/* Copy any email addresses in a certificate or request to 334 * GENERAL_NAMES 335 */ 336 337static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p) 338{ 339 X509_NAME *nm; 340 ASN1_IA5STRING *email = NULL; 341 X509_NAME_ENTRY *ne; 342 GENERAL_NAME *gen = NULL; 343 int i; 344 if(ctx != NULL && ctx->flags == CTX_TEST) 345 return 1; 346 if(!ctx || (!ctx->subject_cert && !ctx->subject_req)) { 347 X509V3err(X509V3_F_COPY_EMAIL,X509V3_R_NO_SUBJECT_DETAILS); 348 goto err; 349 } 350 /* Find the subject name */ 351 if(ctx->subject_cert) nm = X509_get_subject_name(ctx->subject_cert); 352 else nm = X509_REQ_get_subject_name(ctx->subject_req); 353 354 /* Now add any email address(es) to STACK */ 355 i = -1; 356 while((i = X509_NAME_get_index_by_NID(nm, 357 NID_pkcs9_emailAddress, i)) >= 0) { 358 ne = X509_NAME_get_entry(nm, i); 359 email = M_ASN1_IA5STRING_dup(X509_NAME_ENTRY_get_data(ne)); 360 if (move_p) 361 { 362 X509_NAME_delete_entry(nm, i); 363 i--; 364 } 365 if(!email || !(gen = GENERAL_NAME_new())) { 366 X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE); 367 goto err; 368 } 369 gen->d.ia5 = email; 370 email = NULL; 371 gen->type = GEN_EMAIL; 372 if(!sk_GENERAL_NAME_push(gens, gen)) { 373 X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE); 374 goto err; 375 } 376 gen = NULL; 377 } 378 379 380 return 1; 381 382 err: 383 GENERAL_NAME_free(gen); 384 M_ASN1_IA5STRING_free(email); 385 return 0; 386 387} 388 389GENERAL_NAMES *v2i_GENERAL_NAMES(X509V3_EXT_METHOD *method, 390 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval) 391{ 392 GENERAL_NAME *gen; 393 GENERAL_NAMES *gens = NULL; 394 CONF_VALUE *cnf; 395 int i; 396 if(!(gens = sk_GENERAL_NAME_new_null())) { 397 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE); 398 return NULL; 399 } 400 for(i = 0; i < sk_CONF_VALUE_num(nval); i++) { 401 cnf = sk_CONF_VALUE_value(nval, i); 402 if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) goto err; 403 sk_GENERAL_NAME_push(gens, gen); 404 } 405 return gens; 406 err: 407 sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); 408 return NULL; 409} 410 411GENERAL_NAME *v2i_GENERAL_NAME(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, 412 CONF_VALUE *cnf) 413 { 414 return v2i_GENERAL_NAME_ex(NULL, method, ctx, cnf, 0); 415 } 416 417GENERAL_NAME *v2i_GENERAL_NAME_ex(GENERAL_NAME *out, 418 X509V3_EXT_METHOD *method, X509V3_CTX *ctx, 419 CONF_VALUE *cnf, int is_nc) 420 { 421 char is_string = 0; 422 int type; 423 GENERAL_NAME *gen = NULL; 424 425 char *name, *value; 426 427 name = cnf->name; 428 value = cnf->value; 429 430 if(!value) 431 { 432 X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_MISSING_VALUE); 433 return NULL; 434 } 435 436 if (out) 437 gen = out; 438 else 439 { 440 gen = GENERAL_NAME_new(); 441 if(gen == NULL) 442 { 443 X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,ERR_R_MALLOC_FAILURE); 444 return NULL; 445 } 446 } 447 448 if(!name_cmp(name, "email")) 449 { 450 is_string = 1; 451 type = GEN_EMAIL; 452 } 453 else if(!name_cmp(name, "URI")) 454 { 455 is_string = 1; 456 type = GEN_URI; 457 } 458 else if(!name_cmp(name, "DNS")) 459 { 460 is_string = 1; 461 type = GEN_DNS; 462 } 463 else if(!name_cmp(name, "RID")) 464 { 465 ASN1_OBJECT *obj; 466 if(!(obj = OBJ_txt2obj(value,0))) 467 { 468 X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_BAD_OBJECT); 469 ERR_add_error_data(2, "value=", value); 470 goto err; 471 } 472 gen->d.rid = obj; 473 type = GEN_RID; 474 } 475 else if(!name_cmp(name, "IP")) 476 { 477 if (is_nc) 478 gen->d.ip = a2i_IPADDRESS_NC(value); 479 else 480 gen->d.ip = a2i_IPADDRESS(value); 481 if(gen->d.ip == NULL) 482 { 483 X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_BAD_IP_ADDRESS); 484 ERR_add_error_data(2, "value=", value); 485 goto err; 486 } 487 type = GEN_IPADD; 488 } 489 else if(!name_cmp(name, "dirName")) 490 { 491 type = GEN_DIRNAME; 492 if (!do_dirname(gen, value, ctx)) 493 { 494 X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_DIRNAME_ERROR); 495 goto err; 496 } 497 } 498 else if(!name_cmp(name, "otherName")) 499 { 500 if (!do_othername(gen, value, ctx)) 501 { 502 X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_OTHERNAME_ERROR); 503 goto err; 504 } 505 type = GEN_OTHERNAME; 506 } 507 else 508 { 509 X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_UNSUPPORTED_OPTION); 510 ERR_add_error_data(2, "name=", name); 511 goto err; 512 } 513 514 if(is_string) 515 { 516 if(!(gen->d.ia5 = M_ASN1_IA5STRING_new()) || 517 !ASN1_STRING_set(gen->d.ia5, (unsigned char*)value, 518 strlen(value))) 519 { 520 X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,ERR_R_MALLOC_FAILURE); 521 goto err; 522 } 523 } 524 525 gen->type = type; 526 527 return gen; 528 529 err: 530 GENERAL_NAME_free(gen); 531 return NULL; 532 } 533 534static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx) 535 { 536 char *objtmp = NULL, *p; 537 int objlen; 538 if (!(p = strchr(value, ';'))) 539 return 0; 540 if (!(gen->d.otherName = OTHERNAME_new())) 541 return 0; 542 /* Free this up because we will overwrite it. 543 * no need to free type_id because it is static 544 */ 545 ASN1_TYPE_free(gen->d.otherName->value); 546 if (!(gen->d.otherName->value = ASN1_generate_v3(p + 1, ctx))) 547 return 0; 548 objlen = p - value; 549 objtmp = OPENSSL_malloc(objlen + 1); 550 strncpy(objtmp, value, objlen); 551 objtmp[objlen] = 0; 552 gen->d.otherName->type_id = OBJ_txt2obj(objtmp, 0); 553 OPENSSL_free(objtmp); 554 if (!gen->d.otherName->type_id) 555 return 0; 556 return 1; 557 } 558 559static int do_dirname(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx) 560 { 561 int ret; 562 STACK_OF(CONF_VALUE) *sk; 563 X509_NAME *nm; 564 if (!(nm = X509_NAME_new())) 565 return 0; 566 sk = X509V3_get_section(ctx, value); 567 if (!sk) 568 { 569 X509V3err(X509V3_F_DO_DIRNAME,X509V3_R_SECTION_NOT_FOUND); 570 ERR_add_error_data(2, "section=", value); 571 X509_NAME_free(nm); 572 return 0; 573 } 574 /* FIXME: should allow other character types... */ 575 ret = X509V3_NAME_from_section(nm, sk, MBSTRING_ASC); 576 if (!ret) 577 X509_NAME_free(nm); 578 gen->d.dirn = nm; 579 580 return ret; 581 } 582