1/* v3_alt.c */ 2/* Written by Dr Stephen N Henson (steve@openssl.org) 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 <openssl/local/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{ NID_certificate_issuer, 0, ASN1_ITEM_ref(GENERAL_NAMES), 870,0,0,0, 880,0, 89(X509V3_EXT_I2V)i2v_GENERAL_NAMES, 90NULL, NULL, NULL, NULL}, 91}; 92 93STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method, 94 GENERAL_NAMES *gens, STACK_OF(CONF_VALUE) *ret) 95{ 96 int i; 97 GENERAL_NAME *gen; 98 for(i = 0; i < sk_GENERAL_NAME_num(gens); i++) { 99 gen = sk_GENERAL_NAME_value(gens, i); 100 ret = i2v_GENERAL_NAME(method, gen, ret); 101 } 102 if(!ret) return sk_CONF_VALUE_new_null(); 103 return ret; 104} 105 106STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method, 107 GENERAL_NAME *gen, STACK_OF(CONF_VALUE) *ret) 108{ 109 unsigned char *p; 110 char oline[256], htmp[5]; 111 int i; 112 switch (gen->type) 113 { 114 case GEN_OTHERNAME: 115 X509V3_add_value("othername","<unsupported>", &ret); 116 break; 117 118 case GEN_X400: 119 X509V3_add_value("X400Name","<unsupported>", &ret); 120 break; 121 122 case GEN_EDIPARTY: 123 X509V3_add_value("EdiPartyName","<unsupported>", &ret); 124 break; 125 126 case GEN_EMAIL: 127 X509V3_add_value_uchar("email",gen->d.ia5->data, &ret); 128 break; 129 130 case GEN_DNS: 131 X509V3_add_value_uchar("DNS",gen->d.ia5->data, &ret); 132 break; 133 134 case GEN_URI: 135 X509V3_add_value_uchar("URI",gen->d.ia5->data, &ret); 136 break; 137 138 case GEN_DIRNAME: 139 X509_NAME_oneline(gen->d.dirn, oline, 256); 140 X509V3_add_value("DirName",oline, &ret); 141 break; 142 143 case GEN_IPADD: 144 p = gen->d.ip->data; 145 if(gen->d.ip->length == 4) 146 BIO_snprintf(oline, sizeof oline, 147 "%d.%d.%d.%d", p[0], p[1], p[2], p[3]); 148 else if(gen->d.ip->length == 16) 149 { 150 oline[0] = 0; 151 for (i = 0; i < 8; i++) 152 { 153 BIO_snprintf(htmp, sizeof htmp, 154 "%X", p[0] << 8 | p[1]); 155 p += 2; 156 strcat(oline, htmp); 157 if (i != 7) 158 strcat(oline, ":"); 159 } 160 } 161 else 162 { 163 X509V3_add_value("IP Address","<invalid>", &ret); 164 break; 165 } 166 X509V3_add_value("IP Address",oline, &ret); 167 break; 168 169 case GEN_RID: 170 i2t_ASN1_OBJECT(oline, 256, gen->d.rid); 171 X509V3_add_value("Registered ID",oline, &ret); 172 break; 173 } 174 return ret; 175} 176 177int GENERAL_NAME_print(BIO *out, GENERAL_NAME *gen) 178{ 179 unsigned char *p; 180 int i; 181 switch (gen->type) 182 { 183 case GEN_OTHERNAME: 184 BIO_printf(out, "othername:<unsupported>"); 185 break; 186 187 case GEN_X400: 188 BIO_printf(out, "X400Name:<unsupported>"); 189 break; 190 191 case GEN_EDIPARTY: 192 /* Maybe fix this: it is supported now */ 193 BIO_printf(out, "EdiPartyName:<unsupported>"); 194 break; 195 196 case GEN_EMAIL: 197 BIO_printf(out, "email:%s",gen->d.ia5->data); 198 break; 199 200 case GEN_DNS: 201 BIO_printf(out, "DNS:%s",gen->d.ia5->data); 202 break; 203 204 case GEN_URI: 205 BIO_printf(out, "URI:%s",gen->d.ia5->data); 206 break; 207 208 case GEN_DIRNAME: 209 BIO_printf(out, "DirName: "); 210 X509_NAME_print_ex(out, gen->d.dirn, 0, XN_FLAG_ONELINE); 211 break; 212 213 case GEN_IPADD: 214 p = gen->d.ip->data; 215 if(gen->d.ip->length == 4) 216 BIO_printf(out, "IP Address:%d.%d.%d.%d", 217 p[0], p[1], p[2], p[3]); 218 else if(gen->d.ip->length == 16) 219 { 220 BIO_printf(out, "IP Address"); 221 for (i = 0; i < 8; i++) 222 { 223 BIO_printf(out, ":%X", p[0] << 8 | p[1]); 224 p += 2; 225 } 226 BIO_puts(out, "\n"); 227 } 228 else 229 { 230 BIO_printf(out,"IP Address:<invalid>"); 231 break; 232 } 233 break; 234 235 case GEN_RID: 236 BIO_printf(out, "Registered ID"); 237 i2a_ASN1_OBJECT(out, gen->d.rid); 238 break; 239 } 240 return 1; 241} 242 243static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method, 244 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval) 245{ 246 GENERAL_NAMES *gens = NULL; 247 CONF_VALUE *cnf; 248 int i; 249 if(!(gens = sk_GENERAL_NAME_new_null())) { 250 X509V3err(X509V3_F_V2I_ISSUER_ALT,ERR_R_MALLOC_FAILURE); 251 return NULL; 252 } 253 for(i = 0; i < sk_CONF_VALUE_num(nval); i++) { 254 cnf = sk_CONF_VALUE_value(nval, i); 255 if(!name_cmp(cnf->name, "issuer") && cnf->value && 256 !strcmp(cnf->value, "copy")) { 257 if(!copy_issuer(ctx, gens)) goto err; 258 } else { 259 GENERAL_NAME *gen; 260 if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) 261 goto err; 262 sk_GENERAL_NAME_push(gens, gen); 263 } 264 } 265 return gens; 266 err: 267 sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); 268 return NULL; 269} 270 271/* Append subject altname of issuer to issuer alt name of subject */ 272 273static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens) 274{ 275 GENERAL_NAMES *ialt; 276 GENERAL_NAME *gen; 277 X509_EXTENSION *ext; 278 int i; 279 if(ctx && (ctx->flags == CTX_TEST)) return 1; 280 if(!ctx || !ctx->issuer_cert) { 281 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_NO_ISSUER_DETAILS); 282 goto err; 283 } 284 i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1); 285 if(i < 0) return 1; 286 if(!(ext = X509_get_ext(ctx->issuer_cert, i)) || 287 !(ialt = X509V3_EXT_d2i(ext)) ) { 288 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_ISSUER_DECODE_ERROR); 289 goto err; 290 } 291 292 for(i = 0; i < sk_GENERAL_NAME_num(ialt); i++) { 293 gen = sk_GENERAL_NAME_value(ialt, i); 294 if(!sk_GENERAL_NAME_push(gens, gen)) { 295 X509V3err(X509V3_F_COPY_ISSUER,ERR_R_MALLOC_FAILURE); 296 goto err; 297 } 298 } 299 sk_GENERAL_NAME_free(ialt); 300 301 return 1; 302 303 err: 304 return 0; 305 306} 307 308static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method, 309 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval) 310{ 311 GENERAL_NAMES *gens = NULL; 312 CONF_VALUE *cnf; 313 int i; 314 if(!(gens = sk_GENERAL_NAME_new_null())) { 315 X509V3err(X509V3_F_V2I_SUBJECT_ALT,ERR_R_MALLOC_FAILURE); 316 return NULL; 317 } 318 for(i = 0; i < sk_CONF_VALUE_num(nval); i++) { 319 cnf = sk_CONF_VALUE_value(nval, i); 320 if(!name_cmp(cnf->name, "email") && cnf->value && 321 !strcmp(cnf->value, "copy")) { 322 if(!copy_email(ctx, gens, 0)) goto err; 323 } else if(!name_cmp(cnf->name, "email") && cnf->value && 324 !strcmp(cnf->value, "move")) { 325 if(!copy_email(ctx, gens, 1)) goto err; 326 } else { 327 GENERAL_NAME *gen; 328 if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) 329 goto err; 330 sk_GENERAL_NAME_push(gens, gen); 331 } 332 } 333 return gens; 334 err: 335 sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); 336 return NULL; 337} 338 339/* Copy any email addresses in a certificate or request to 340 * GENERAL_NAMES 341 */ 342 343static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p) 344{ 345 X509_NAME *nm; 346 ASN1_IA5STRING *email = NULL; 347 X509_NAME_ENTRY *ne; 348 GENERAL_NAME *gen = NULL; 349 int i; 350 if(ctx != NULL && ctx->flags == CTX_TEST) 351 return 1; 352 if(!ctx || (!ctx->subject_cert && !ctx->subject_req)) { 353 X509V3err(X509V3_F_COPY_EMAIL,X509V3_R_NO_SUBJECT_DETAILS); 354 goto err; 355 } 356 /* Find the subject name */ 357 if(ctx->subject_cert) nm = X509_get_subject_name(ctx->subject_cert); 358 else nm = X509_REQ_get_subject_name(ctx->subject_req); 359 360 /* Now add any email address(es) to STACK */ 361 i = -1; 362 while((i = X509_NAME_get_index_by_NID(nm, 363 NID_pkcs9_emailAddress, i)) >= 0) { 364 ne = X509_NAME_get_entry(nm, i); 365 email = M_ASN1_IA5STRING_dup(X509_NAME_ENTRY_get_data(ne)); 366 if (move_p) 367 { 368 X509_NAME_delete_entry(nm, i); 369 X509_NAME_ENTRY_free(ne); 370 i--; 371 } 372 if(!email || !(gen = GENERAL_NAME_new())) { 373 X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE); 374 goto err; 375 } 376 gen->d.ia5 = email; 377 email = NULL; 378 gen->type = GEN_EMAIL; 379 if(!sk_GENERAL_NAME_push(gens, gen)) { 380 X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE); 381 goto err; 382 } 383 gen = NULL; 384 } 385 386 387 return 1; 388 389 err: 390 GENERAL_NAME_free(gen); 391 M_ASN1_IA5STRING_free(email); 392 return 0; 393 394} 395 396GENERAL_NAMES *v2i_GENERAL_NAMES(const X509V3_EXT_METHOD *method, 397 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval) 398{ 399 GENERAL_NAME *gen; 400 GENERAL_NAMES *gens = NULL; 401 CONF_VALUE *cnf; 402 int i; 403 if(!(gens = sk_GENERAL_NAME_new_null())) { 404 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE); 405 return NULL; 406 } 407 for(i = 0; i < sk_CONF_VALUE_num(nval); i++) { 408 cnf = sk_CONF_VALUE_value(nval, i); 409 if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) goto err; 410 sk_GENERAL_NAME_push(gens, gen); 411 } 412 return gens; 413 err: 414 sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); 415 return NULL; 416} 417 418GENERAL_NAME *v2i_GENERAL_NAME(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx, 419 CONF_VALUE *cnf) 420 { 421 return v2i_GENERAL_NAME_ex(NULL, method, ctx, cnf, 0); 422 } 423 424GENERAL_NAME *a2i_GENERAL_NAME(GENERAL_NAME *out, 425 const X509V3_EXT_METHOD *method, X509V3_CTX *ctx, 426 int gen_type, char *value, int is_nc) 427 { 428 char is_string = 0; 429 GENERAL_NAME *gen = NULL; 430 431 if(!value) 432 { 433 X509V3err(X509V3_F_A2I_GENERAL_NAME,X509V3_R_MISSING_VALUE); 434 return NULL; 435 } 436 437 if (out) 438 gen = out; 439 else 440 { 441 gen = GENERAL_NAME_new(); 442 if(gen == NULL) 443 { 444 X509V3err(X509V3_F_A2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE); 445 return NULL; 446 } 447 } 448 449 switch (gen_type) 450 { 451 case GEN_URI: 452 case GEN_EMAIL: 453 case GEN_DNS: 454 is_string = 1; 455 break; 456 457 case GEN_RID: 458 { 459 ASN1_OBJECT *obj; 460 if(!(obj = OBJ_txt2obj(value,0))) 461 { 462 X509V3err(X509V3_F_A2I_GENERAL_NAME,X509V3_R_BAD_OBJECT); 463 ERR_add_error_data(2, "value=", value); 464 goto err; 465 } 466 gen->d.rid = obj; 467 } 468 break; 469 470 case GEN_IPADD: 471 if (is_nc) 472 gen->d.ip = a2i_IPADDRESS_NC(value); 473 else 474 gen->d.ip = a2i_IPADDRESS(value); 475 if(gen->d.ip == NULL) 476 { 477 X509V3err(X509V3_F_A2I_GENERAL_NAME,X509V3_R_BAD_IP_ADDRESS); 478 ERR_add_error_data(2, "value=", value); 479 goto err; 480 } 481 break; 482 483 case GEN_DIRNAME: 484 if (!do_dirname(gen, value, ctx)) 485 { 486 X509V3err(X509V3_F_A2I_GENERAL_NAME,X509V3_R_DIRNAME_ERROR); 487 goto err; 488 } 489 break; 490 491 case GEN_OTHERNAME: 492 if (!do_othername(gen, value, ctx)) 493 { 494 X509V3err(X509V3_F_A2I_GENERAL_NAME,X509V3_R_OTHERNAME_ERROR); 495 goto err; 496 } 497 break; 498 default: 499 X509V3err(X509V3_F_A2I_GENERAL_NAME,X509V3_R_UNSUPPORTED_TYPE); 500 goto err; 501 } 502 503 if(is_string) 504 { 505 if(!(gen->d.ia5 = M_ASN1_IA5STRING_new()) || 506 !ASN1_STRING_set(gen->d.ia5, (unsigned char*)value, 507 strlen(value))) 508 { 509 X509V3err(X509V3_F_A2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE); 510 goto err; 511 } 512 } 513 514 gen->type = gen_type; 515 516 return gen; 517 518 err: 519 if (!out) 520 GENERAL_NAME_free(gen); 521 return NULL; 522 } 523 524GENERAL_NAME *v2i_GENERAL_NAME_ex(GENERAL_NAME *out, 525 const X509V3_EXT_METHOD *method, 526 X509V3_CTX *ctx, CONF_VALUE *cnf, int is_nc) 527 { 528 int type; 529 530 char *name, *value; 531 532 name = cnf->name; 533 value = cnf->value; 534 535 if(!value) 536 { 537 X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_MISSING_VALUE); 538 return NULL; 539 } 540 541 if(!name_cmp(name, "email")) 542 type = GEN_EMAIL; 543 else if(!name_cmp(name, "URI")) 544 type = GEN_URI; 545 else if(!name_cmp(name, "DNS")) 546 type = GEN_DNS; 547 else if(!name_cmp(name, "RID")) 548 type = GEN_RID; 549 else if(!name_cmp(name, "IP")) 550 type = GEN_IPADD; 551 else if(!name_cmp(name, "dirName")) 552 type = GEN_DIRNAME; 553 else if(!name_cmp(name, "otherName")) 554 type = GEN_OTHERNAME; 555 else 556 { 557 X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_UNSUPPORTED_OPTION); 558 ERR_add_error_data(2, "name=", name); 559 return NULL; 560 } 561 562 return a2i_GENERAL_NAME(out, method, ctx, type, value, is_nc); 563 564 } 565 566static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx) 567 { 568 char *objtmp = NULL, *p; 569 int objlen; 570 if (!(p = strchr(value, ';'))) 571 return 0; 572 if (!(gen->d.otherName = OTHERNAME_new())) 573 return 0; 574 /* Free this up because we will overwrite it. 575 * no need to free type_id because it is static 576 */ 577 ASN1_TYPE_free(gen->d.otherName->value); 578 if (!(gen->d.otherName->value = ASN1_generate_v3(p + 1, ctx))) 579 return 0; 580 objlen = p - value; 581 objtmp = OPENSSL_malloc(objlen + 1); 582 strncpy(objtmp, value, objlen); 583 objtmp[objlen] = 0; 584 gen->d.otherName->type_id = OBJ_txt2obj(objtmp, 0); 585 OPENSSL_free(objtmp); 586 if (!gen->d.otherName->type_id) 587 return 0; 588 return 1; 589 } 590 591static int do_dirname(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx) 592 { 593 int ret; 594 STACK_OF(CONF_VALUE) *sk; 595 X509_NAME *nm; 596 if (!(nm = X509_NAME_new())) 597 return 0; 598 sk = X509V3_get_section(ctx, value); 599 if (!sk) 600 { 601 X509V3err(X509V3_F_DO_DIRNAME,X509V3_R_SECTION_NOT_FOUND); 602 ERR_add_error_data(2, "section=", value); 603 X509_NAME_free(nm); 604 return 0; 605 } 606 /* FIXME: should allow other character types... */ 607 ret = X509V3_NAME_from_section(nm, sk, MBSTRING_ASC); 608 if (!ret) 609 X509_NAME_free(nm); 610 gen->d.dirn = nm; 611 X509V3_section_free(ctx, sk); 612 613 return ret; 614 } 615