Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* v3_utl.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 | /* X509 v3 extension utilities */ |
| 59 | |
| 60 | |
| 61 | #include <stdio.h> |
| 62 | #include <ctype.h> |
| 63 | #include "cryptlib.h" |
| 64 | #include <openssl/conf.h> |
| 65 | #include <openssl/x509v3.h> |
| 66 | #include <openssl/bn.h> |
| 67 | |
| 68 | static char *strip_spaces(char *name); |
| 69 | static int sk_strcmp(const char * const *a, const char * const *b); |
| 70 | static STACK_OF(OPENSSL_STRING) *get_email(X509_NAME *name, GENERAL_NAMES *gens); |
| 71 | static void str_free(OPENSSL_STRING str); |
| 72 | static int append_ia5(STACK_OF(OPENSSL_STRING) **sk, ASN1_IA5STRING *email); |
| 73 | |
| 74 | static int ipv4_from_asc(unsigned char *v4, const char *in); |
| 75 | static int ipv6_from_asc(unsigned char *v6, const char *in); |
| 76 | static int ipv6_cb(const char *elem, int len, void *usr); |
| 77 | static int ipv6_hex(unsigned char *out, const char *in, int inlen); |
| 78 | |
| 79 | /* Add a CONF_VALUE name value pair to stack */ |
| 80 | |
| 81 | int X509V3_add_value(const char *name, const char *value, |
| 82 | STACK_OF(CONF_VALUE) **extlist) |
| 83 | { |
| 84 | CONF_VALUE *vtmp = NULL; |
| 85 | char *tname = NULL, *tvalue = NULL; |
| 86 | if(name && !(tname = BUF_strdup(name))) goto err; |
| 87 | if(value && !(tvalue = BUF_strdup(value))) goto err; |
| 88 | if(!(vtmp = (CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE)))) goto err; |
| 89 | if(!*extlist && !(*extlist = sk_CONF_VALUE_new_null())) goto err; |
| 90 | vtmp->section = NULL; |
| 91 | vtmp->name = tname; |
| 92 | vtmp->value = tvalue; |
| 93 | if(!sk_CONF_VALUE_push(*extlist, vtmp)) goto err; |
| 94 | return 1; |
| 95 | err: |
| 96 | X509V3err(X509V3_F_X509V3_ADD_VALUE,ERR_R_MALLOC_FAILURE); |
| 97 | if(vtmp) OPENSSL_free(vtmp); |
| 98 | if(tname) OPENSSL_free(tname); |
| 99 | if(tvalue) OPENSSL_free(tvalue); |
| 100 | return 0; |
| 101 | } |
| 102 | |
| 103 | int X509V3_add_value_uchar(const char *name, const unsigned char *value, |
| 104 | STACK_OF(CONF_VALUE) **extlist) |
| 105 | { |
| 106 | return X509V3_add_value(name,(const char *)value,extlist); |
| 107 | } |
| 108 | |
| 109 | /* Free function for STACK_OF(CONF_VALUE) */ |
| 110 | |
| 111 | void X509V3_conf_free(CONF_VALUE *conf) |
| 112 | { |
| 113 | if(!conf) return; |
| 114 | if(conf->name) OPENSSL_free(conf->name); |
| 115 | if(conf->value) OPENSSL_free(conf->value); |
| 116 | if(conf->section) OPENSSL_free(conf->section); |
| 117 | OPENSSL_free(conf); |
| 118 | } |
| 119 | |
| 120 | int X509V3_add_value_bool(const char *name, int asn1_bool, |
| 121 | STACK_OF(CONF_VALUE) **extlist) |
| 122 | { |
| 123 | if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist); |
| 124 | return X509V3_add_value(name, "FALSE", extlist); |
| 125 | } |
| 126 | |
| 127 | int X509V3_add_value_bool_nf(char *name, int asn1_bool, |
| 128 | STACK_OF(CONF_VALUE) **extlist) |
| 129 | { |
| 130 | if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist); |
| 131 | return 1; |
| 132 | } |
| 133 | |
| 134 | |
| 135 | char *i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *method, ASN1_ENUMERATED *a) |
| 136 | { |
| 137 | BIGNUM *bntmp = NULL; |
| 138 | char *strtmp = NULL; |
| 139 | if(!a) return NULL; |
| 140 | if(!(bntmp = ASN1_ENUMERATED_to_BN(a, NULL)) || |
| 141 | !(strtmp = BN_bn2dec(bntmp)) ) |
| 142 | X509V3err(X509V3_F_I2S_ASN1_ENUMERATED,ERR_R_MALLOC_FAILURE); |
| 143 | BN_free(bntmp); |
| 144 | return strtmp; |
| 145 | } |
| 146 | |
| 147 | char *i2s_ASN1_INTEGER(X509V3_EXT_METHOD *method, ASN1_INTEGER *a) |
| 148 | { |
| 149 | BIGNUM *bntmp = NULL; |
| 150 | char *strtmp = NULL; |
| 151 | if(!a) return NULL; |
| 152 | if(!(bntmp = ASN1_INTEGER_to_BN(a, NULL)) || |
| 153 | !(strtmp = BN_bn2dec(bntmp)) ) |
| 154 | X509V3err(X509V3_F_I2S_ASN1_INTEGER,ERR_R_MALLOC_FAILURE); |
| 155 | BN_free(bntmp); |
| 156 | return strtmp; |
| 157 | } |
| 158 | |
| 159 | ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value) |
| 160 | { |
| 161 | BIGNUM *bn = NULL; |
| 162 | ASN1_INTEGER *aint; |
| 163 | int isneg, ishex; |
| 164 | int ret; |
| 165 | if (!value) { |
| 166 | X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_INVALID_NULL_VALUE); |
| 167 | return 0; |
| 168 | } |
| 169 | bn = BN_new(); |
| 170 | if (value[0] == '-') { |
| 171 | value++; |
| 172 | isneg = 1; |
| 173 | } else isneg = 0; |
| 174 | |
| 175 | if (value[0] == '0' && ((value[1] == 'x') || (value[1] == 'X'))) { |
| 176 | value += 2; |
| 177 | ishex = 1; |
| 178 | } else ishex = 0; |
| 179 | |
| 180 | if (ishex) ret = BN_hex2bn(&bn, value); |
| 181 | else ret = BN_dec2bn(&bn, value); |
| 182 | |
| 183 | if (!ret || value[ret]) { |
| 184 | BN_free(bn); |
| 185 | X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_DEC2BN_ERROR); |
| 186 | return 0; |
| 187 | } |
| 188 | |
| 189 | if (isneg && BN_is_zero(bn)) isneg = 0; |
| 190 | |
| 191 | aint = BN_to_ASN1_INTEGER(bn, NULL); |
| 192 | BN_free(bn); |
| 193 | if (!aint) { |
| 194 | X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_TO_ASN1_INTEGER_ERROR); |
| 195 | return 0; |
| 196 | } |
| 197 | if (isneg) aint->type |= V_ASN1_NEG; |
| 198 | return aint; |
| 199 | } |
| 200 | |
| 201 | int X509V3_add_value_int(const char *name, ASN1_INTEGER *aint, |
| 202 | STACK_OF(CONF_VALUE) **extlist) |
| 203 | { |
| 204 | char *strtmp; |
| 205 | int ret; |
| 206 | if(!aint) return 1; |
| 207 | if(!(strtmp = i2s_ASN1_INTEGER(NULL, aint))) return 0; |
| 208 | ret = X509V3_add_value(name, strtmp, extlist); |
| 209 | OPENSSL_free(strtmp); |
| 210 | return ret; |
| 211 | } |
| 212 | |
| 213 | int X509V3_get_value_bool(CONF_VALUE *value, int *asn1_bool) |
| 214 | { |
| 215 | char *btmp; |
| 216 | if(!(btmp = value->value)) goto err; |
| 217 | if(!strcmp(btmp, "TRUE") || !strcmp(btmp, "true") |
| 218 | || !strcmp(btmp, "Y") || !strcmp(btmp, "y") |
| 219 | || !strcmp(btmp, "YES") || !strcmp(btmp, "yes")) { |
| 220 | *asn1_bool = 0xff; |
| 221 | return 1; |
| 222 | } else if(!strcmp(btmp, "FALSE") || !strcmp(btmp, "false") |
| 223 | || !strcmp(btmp, "N") || !strcmp(btmp, "n") |
| 224 | || !strcmp(btmp, "NO") || !strcmp(btmp, "no")) { |
| 225 | *asn1_bool = 0; |
| 226 | return 1; |
| 227 | } |
| 228 | err: |
| 229 | X509V3err(X509V3_F_X509V3_GET_VALUE_BOOL,X509V3_R_INVALID_BOOLEAN_STRING); |
| 230 | X509V3_conf_err(value); |
| 231 | return 0; |
| 232 | } |
| 233 | |
| 234 | int X509V3_get_value_int(CONF_VALUE *value, ASN1_INTEGER **aint) |
| 235 | { |
| 236 | ASN1_INTEGER *itmp; |
| 237 | if(!(itmp = s2i_ASN1_INTEGER(NULL, value->value))) { |
| 238 | X509V3_conf_err(value); |
| 239 | return 0; |
| 240 | } |
| 241 | *aint = itmp; |
| 242 | return 1; |
| 243 | } |
| 244 | |
| 245 | #define HDR_NAME 1 |
| 246 | #define HDR_VALUE 2 |
| 247 | |
| 248 | /*#define DEBUG*/ |
| 249 | |
| 250 | STACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line) |
| 251 | { |
| 252 | char *p, *q, c; |
| 253 | char *ntmp, *vtmp; |
| 254 | STACK_OF(CONF_VALUE) *values = NULL; |
| 255 | char *linebuf; |
| 256 | int state; |
| 257 | /* We are going to modify the line so copy it first */ |
| 258 | linebuf = BUF_strdup(line); |
| 259 | state = HDR_NAME; |
| 260 | ntmp = NULL; |
| 261 | /* Go through all characters */ |
| 262 | for(p = linebuf, q = linebuf; (c = *p) && (c!='\r') && (c!='\n'); p++) { |
| 263 | |
| 264 | switch(state) { |
| 265 | case HDR_NAME: |
| 266 | if(c == ':') { |
| 267 | state = HDR_VALUE; |
| 268 | *p = 0; |
| 269 | ntmp = strip_spaces(q); |
| 270 | if(!ntmp) { |
| 271 | X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME); |
| 272 | goto err; |
| 273 | } |
| 274 | q = p + 1; |
| 275 | } else if(c == ',') { |
| 276 | *p = 0; |
| 277 | ntmp = strip_spaces(q); |
| 278 | q = p + 1; |
| 279 | #if 0 |
| 280 | printf("%s\n", ntmp); |
| 281 | #endif |
| 282 | if(!ntmp) { |
| 283 | X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME); |
| 284 | goto err; |
| 285 | } |
| 286 | X509V3_add_value(ntmp, NULL, &values); |
| 287 | } |
| 288 | break ; |
| 289 | |
| 290 | case HDR_VALUE: |
| 291 | if(c == ',') { |
| 292 | state = HDR_NAME; |
| 293 | *p = 0; |
| 294 | vtmp = strip_spaces(q); |
| 295 | #if 0 |
| 296 | printf("%s\n", ntmp); |
| 297 | #endif |
| 298 | if(!vtmp) { |
| 299 | X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE); |
| 300 | goto err; |
| 301 | } |
| 302 | X509V3_add_value(ntmp, vtmp, &values); |
| 303 | ntmp = NULL; |
| 304 | q = p + 1; |
| 305 | } |
| 306 | |
| 307 | } |
| 308 | } |
| 309 | |
| 310 | if(state == HDR_VALUE) { |
| 311 | vtmp = strip_spaces(q); |
| 312 | #if 0 |
| 313 | printf("%s=%s\n", ntmp, vtmp); |
| 314 | #endif |
| 315 | if(!vtmp) { |
| 316 | X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE); |
| 317 | goto err; |
| 318 | } |
| 319 | X509V3_add_value(ntmp, vtmp, &values); |
| 320 | } else { |
| 321 | ntmp = strip_spaces(q); |
| 322 | #if 0 |
| 323 | printf("%s\n", ntmp); |
| 324 | #endif |
| 325 | if(!ntmp) { |
| 326 | X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME); |
| 327 | goto err; |
| 328 | } |
| 329 | X509V3_add_value(ntmp, NULL, &values); |
| 330 | } |
| 331 | OPENSSL_free(linebuf); |
| 332 | return values; |
| 333 | |
| 334 | err: |
| 335 | OPENSSL_free(linebuf); |
| 336 | sk_CONF_VALUE_pop_free(values, X509V3_conf_free); |
| 337 | return NULL; |
| 338 | |
| 339 | } |
| 340 | |
| 341 | /* Delete leading and trailing spaces from a string */ |
| 342 | static char *strip_spaces(char *name) |
| 343 | { |
| 344 | char *p, *q; |
| 345 | /* Skip over leading spaces */ |
| 346 | p = name; |
| 347 | while(*p && isspace((unsigned char)*p)) p++; |
| 348 | if(!*p) return NULL; |
| 349 | q = p + strlen(p) - 1; |
| 350 | while((q != p) && isspace((unsigned char)*q)) q--; |
| 351 | if(p != q) q[1] = 0; |
| 352 | if(!*p) return NULL; |
| 353 | return p; |
| 354 | } |
| 355 | |
| 356 | /* hex string utilities */ |
| 357 | |
| 358 | /* Given a buffer of length 'len' return a OPENSSL_malloc'ed string with its |
| 359 | * hex representation |
| 360 | * @@@ (Contents of buffer are always kept in ASCII, also on EBCDIC machines) |
| 361 | */ |
| 362 | |
| 363 | char *hex_to_string(const unsigned char *buffer, long len) |
| 364 | { |
| 365 | char *tmp, *q; |
| 366 | const unsigned char *p; |
| 367 | int i; |
| 368 | const static char hexdig[] = "0123456789ABCDEF"; |
| 369 | if(!buffer || !len) return NULL; |
| 370 | if(!(tmp = OPENSSL_malloc(len * 3 + 1))) { |
| 371 | X509V3err(X509V3_F_HEX_TO_STRING,ERR_R_MALLOC_FAILURE); |
| 372 | return NULL; |
| 373 | } |
| 374 | q = tmp; |
| 375 | for(i = 0, p = buffer; i < len; i++,p++) { |
| 376 | *q++ = hexdig[(*p >> 4) & 0xf]; |
| 377 | *q++ = hexdig[*p & 0xf]; |
| 378 | *q++ = ':'; |
| 379 | } |
| 380 | q[-1] = 0; |
| 381 | #ifdef CHARSET_EBCDIC |
| 382 | ebcdic2ascii(tmp, tmp, q - tmp - 1); |
| 383 | #endif |
| 384 | |
| 385 | return tmp; |
| 386 | } |
| 387 | |
| 388 | /* Give a string of hex digits convert to |
| 389 | * a buffer |
| 390 | */ |
| 391 | |
| 392 | unsigned char *string_to_hex(const char *str, long *len) |
| 393 | { |
| 394 | unsigned char *hexbuf, *q; |
| 395 | unsigned char ch, cl, *p; |
| 396 | if(!str) { |
| 397 | X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_INVALID_NULL_ARGUMENT); |
| 398 | return NULL; |
| 399 | } |
| 400 | if(!(hexbuf = OPENSSL_malloc(strlen(str) >> 1))) goto err; |
| 401 | for(p = (unsigned char *)str, q = hexbuf; *p;) { |
| 402 | ch = *p++; |
| 403 | #ifdef CHARSET_EBCDIC |
| 404 | ch = os_toebcdic[ch]; |
| 405 | #endif |
| 406 | if(ch == ':') continue; |
| 407 | cl = *p++; |
| 408 | #ifdef CHARSET_EBCDIC |
| 409 | cl = os_toebcdic[cl]; |
| 410 | #endif |
| 411 | if(!cl) { |
| 412 | X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ODD_NUMBER_OF_DIGITS); |
| 413 | OPENSSL_free(hexbuf); |
| 414 | return NULL; |
| 415 | } |
| 416 | if(isupper(ch)) ch = tolower(ch); |
| 417 | if(isupper(cl)) cl = tolower(cl); |
| 418 | |
| 419 | if((ch >= '0') && (ch <= '9')) ch -= '0'; |
| 420 | else if ((ch >= 'a') && (ch <= 'f')) ch -= 'a' - 10; |
| 421 | else goto badhex; |
| 422 | |
| 423 | if((cl >= '0') && (cl <= '9')) cl -= '0'; |
| 424 | else if ((cl >= 'a') && (cl <= 'f')) cl -= 'a' - 10; |
| 425 | else goto badhex; |
| 426 | |
| 427 | *q++ = (ch << 4) | cl; |
| 428 | } |
| 429 | |
| 430 | if(len) *len = q - hexbuf; |
| 431 | |
| 432 | return hexbuf; |
| 433 | |
| 434 | err: |
| 435 | if(hexbuf) OPENSSL_free(hexbuf); |
| 436 | X509V3err(X509V3_F_STRING_TO_HEX,ERR_R_MALLOC_FAILURE); |
| 437 | return NULL; |
| 438 | |
| 439 | badhex: |
| 440 | OPENSSL_free(hexbuf); |
| 441 | X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ILLEGAL_HEX_DIGIT); |
| 442 | return NULL; |
| 443 | |
| 444 | } |
| 445 | |
| 446 | /* V2I name comparison function: returns zero if 'name' matches |
| 447 | * cmp or cmp.* |
| 448 | */ |
| 449 | |
| 450 | int name_cmp(const char *name, const char *cmp) |
| 451 | { |
| 452 | int len, ret; |
| 453 | char c; |
| 454 | len = strlen(cmp); |
| 455 | if((ret = strncmp(name, cmp, len))) return ret; |
| 456 | c = name[len]; |
| 457 | if(!c || (c=='.')) return 0; |
| 458 | return 1; |
| 459 | } |
| 460 | |
| 461 | static int sk_strcmp(const char * const *a, const char * const *b) |
| 462 | { |
| 463 | return strcmp(*a, *b); |
| 464 | } |
| 465 | |
| 466 | STACK_OF(OPENSSL_STRING) *X509_get1_email(X509 *x) |
| 467 | { |
| 468 | GENERAL_NAMES *gens; |
| 469 | STACK_OF(OPENSSL_STRING) *ret; |
| 470 | |
| 471 | gens = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL); |
| 472 | ret = get_email(X509_get_subject_name(x), gens); |
| 473 | sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); |
| 474 | return ret; |
| 475 | } |
| 476 | |
| 477 | STACK_OF(OPENSSL_STRING) *X509_get1_ocsp(X509 *x) |
| 478 | { |
| 479 | AUTHORITY_INFO_ACCESS *info; |
| 480 | STACK_OF(OPENSSL_STRING) *ret = NULL; |
| 481 | int i; |
| 482 | |
| 483 | info = X509_get_ext_d2i(x, NID_info_access, NULL, NULL); |
| 484 | if (!info) |
| 485 | return NULL; |
| 486 | for (i = 0; i < sk_ACCESS_DESCRIPTION_num(info); i++) |
| 487 | { |
| 488 | ACCESS_DESCRIPTION *ad = sk_ACCESS_DESCRIPTION_value(info, i); |
| 489 | if (OBJ_obj2nid(ad->method) == NID_ad_OCSP) |
| 490 | { |
| 491 | if (ad->location->type == GEN_URI) |
| 492 | { |
| 493 | if (!append_ia5(&ret, ad->location->d.uniformResourceIdentifier)) |
| 494 | break; |
| 495 | } |
| 496 | } |
| 497 | } |
| 498 | AUTHORITY_INFO_ACCESS_free(info); |
| 499 | return ret; |
| 500 | } |
| 501 | |
| 502 | STACK_OF(OPENSSL_STRING) *X509_REQ_get1_email(X509_REQ *x) |
| 503 | { |
| 504 | GENERAL_NAMES *gens; |
| 505 | STACK_OF(X509_EXTENSION) *exts; |
| 506 | STACK_OF(OPENSSL_STRING) *ret; |
| 507 | |
| 508 | exts = X509_REQ_get_extensions(x); |
| 509 | gens = X509V3_get_d2i(exts, NID_subject_alt_name, NULL, NULL); |
| 510 | ret = get_email(X509_REQ_get_subject_name(x), gens); |
| 511 | sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); |
| 512 | sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free); |
| 513 | return ret; |
| 514 | } |
| 515 | |
| 516 | |
| 517 | static STACK_OF(OPENSSL_STRING) *get_email(X509_NAME *name, GENERAL_NAMES *gens) |
| 518 | { |
| 519 | STACK_OF(OPENSSL_STRING) *ret = NULL; |
| 520 | X509_NAME_ENTRY *ne; |
| 521 | ASN1_IA5STRING *email; |
| 522 | GENERAL_NAME *gen; |
| 523 | int i; |
| 524 | /* Now add any email address(es) to STACK */ |
| 525 | i = -1; |
| 526 | /* First supplied X509_NAME */ |
| 527 | while((i = X509_NAME_get_index_by_NID(name, |
| 528 | NID_pkcs9_emailAddress, i)) >= 0) { |
| 529 | ne = X509_NAME_get_entry(name, i); |
| 530 | email = X509_NAME_ENTRY_get_data(ne); |
| 531 | if(!append_ia5(&ret, email)) return NULL; |
| 532 | } |
| 533 | for(i = 0; i < sk_GENERAL_NAME_num(gens); i++) |
| 534 | { |
| 535 | gen = sk_GENERAL_NAME_value(gens, i); |
| 536 | if(gen->type != GEN_EMAIL) continue; |
| 537 | if(!append_ia5(&ret, gen->d.ia5)) return NULL; |
| 538 | } |
| 539 | return ret; |
| 540 | } |
| 541 | |
| 542 | static void str_free(OPENSSL_STRING str) |
| 543 | { |
| 544 | OPENSSL_free(str); |
| 545 | } |
| 546 | |
| 547 | static int append_ia5(STACK_OF(OPENSSL_STRING) **sk, ASN1_IA5STRING *email) |
| 548 | { |
| 549 | char *emtmp; |
| 550 | /* First some sanity checks */ |
| 551 | if(email->type != V_ASN1_IA5STRING) return 1; |
| 552 | if(!email->data || !email->length) return 1; |
| 553 | if(!*sk) *sk = sk_OPENSSL_STRING_new(sk_strcmp); |
| 554 | if(!*sk) return 0; |
| 555 | /* Don't add duplicates */ |
| 556 | if(sk_OPENSSL_STRING_find(*sk, (char *)email->data) != -1) return 1; |
| 557 | emtmp = BUF_strdup((char *)email->data); |
| 558 | if(!emtmp || !sk_OPENSSL_STRING_push(*sk, emtmp)) { |
| 559 | X509_email_free(*sk); |
| 560 | *sk = NULL; |
| 561 | return 0; |
| 562 | } |
| 563 | return 1; |
| 564 | } |
| 565 | |
| 566 | void X509_email_free(STACK_OF(OPENSSL_STRING) *sk) |
| 567 | { |
| 568 | sk_OPENSSL_STRING_pop_free(sk, str_free); |
| 569 | } |
| 570 | |
| 571 | /* Convert IP addresses both IPv4 and IPv6 into an |
| 572 | * OCTET STRING compatible with RFC3280. |
| 573 | */ |
| 574 | |
| 575 | ASN1_OCTET_STRING *a2i_IPADDRESS(const char *ipasc) |
| 576 | { |
| 577 | unsigned char ipout[16]; |
| 578 | ASN1_OCTET_STRING *ret; |
| 579 | int iplen; |
| 580 | |
| 581 | /* If string contains a ':' assume IPv6 */ |
| 582 | |
| 583 | iplen = a2i_ipadd(ipout, ipasc); |
| 584 | |
| 585 | if (!iplen) |
| 586 | return NULL; |
| 587 | |
| 588 | ret = ASN1_OCTET_STRING_new(); |
| 589 | if (!ret) |
| 590 | return NULL; |
| 591 | if (!ASN1_OCTET_STRING_set(ret, ipout, iplen)) |
| 592 | { |
| 593 | ASN1_OCTET_STRING_free(ret); |
| 594 | return NULL; |
| 595 | } |
| 596 | return ret; |
| 597 | } |
| 598 | |
| 599 | ASN1_OCTET_STRING *a2i_IPADDRESS_NC(const char *ipasc) |
| 600 | { |
| 601 | ASN1_OCTET_STRING *ret = NULL; |
| 602 | unsigned char ipout[32]; |
| 603 | char *iptmp = NULL, *p; |
| 604 | int iplen1, iplen2; |
| 605 | p = strchr(ipasc,'/'); |
| 606 | if (!p) |
| 607 | return NULL; |
| 608 | iptmp = BUF_strdup(ipasc); |
| 609 | if (!iptmp) |
| 610 | return NULL; |
| 611 | p = iptmp + (p - ipasc); |
| 612 | *p++ = 0; |
| 613 | |
| 614 | iplen1 = a2i_ipadd(ipout, iptmp); |
| 615 | |
| 616 | if (!iplen1) |
| 617 | goto err; |
| 618 | |
| 619 | iplen2 = a2i_ipadd(ipout + iplen1, p); |
| 620 | |
| 621 | OPENSSL_free(iptmp); |
| 622 | iptmp = NULL; |
| 623 | |
| 624 | if (!iplen2 || (iplen1 != iplen2)) |
| 625 | goto err; |
| 626 | |
| 627 | ret = ASN1_OCTET_STRING_new(); |
| 628 | if (!ret) |
| 629 | goto err; |
| 630 | if (!ASN1_OCTET_STRING_set(ret, ipout, iplen1 + iplen2)) |
| 631 | goto err; |
| 632 | |
| 633 | return ret; |
| 634 | |
| 635 | err: |
| 636 | if (iptmp) |
| 637 | OPENSSL_free(iptmp); |
| 638 | if (ret) |
| 639 | ASN1_OCTET_STRING_free(ret); |
| 640 | return NULL; |
| 641 | } |
| 642 | |
| 643 | |
| 644 | int a2i_ipadd(unsigned char *ipout, const char *ipasc) |
| 645 | { |
| 646 | /* If string contains a ':' assume IPv6 */ |
| 647 | |
| 648 | if (strchr(ipasc, ':')) |
| 649 | { |
| 650 | if (!ipv6_from_asc(ipout, ipasc)) |
| 651 | return 0; |
| 652 | return 16; |
| 653 | } |
| 654 | else |
| 655 | { |
| 656 | if (!ipv4_from_asc(ipout, ipasc)) |
| 657 | return 0; |
| 658 | return 4; |
| 659 | } |
| 660 | } |
| 661 | |
| 662 | static int ipv4_from_asc(unsigned char *v4, const char *in) |
| 663 | { |
| 664 | int a0, a1, a2, a3; |
| 665 | if (sscanf(in, "%d.%d.%d.%d", &a0, &a1, &a2, &a3) != 4) |
| 666 | return 0; |
| 667 | if ((a0 < 0) || (a0 > 255) || (a1 < 0) || (a1 > 255) |
| 668 | || (a2 < 0) || (a2 > 255) || (a3 < 0) || (a3 > 255)) |
| 669 | return 0; |
| 670 | v4[0] = a0; |
| 671 | v4[1] = a1; |
| 672 | v4[2] = a2; |
| 673 | v4[3] = a3; |
| 674 | return 1; |
| 675 | } |
| 676 | |
| 677 | typedef struct { |
| 678 | /* Temporary store for IPV6 output */ |
| 679 | unsigned char tmp[16]; |
| 680 | /* Total number of bytes in tmp */ |
| 681 | int total; |
| 682 | /* The position of a zero (corresponding to '::') */ |
| 683 | int zero_pos; |
| 684 | /* Number of zeroes */ |
| 685 | int zero_cnt; |
| 686 | } IPV6_STAT; |
| 687 | |
| 688 | |
| 689 | static int ipv6_from_asc(unsigned char *v6, const char *in) |
| 690 | { |
| 691 | IPV6_STAT v6stat; |
| 692 | v6stat.total = 0; |
| 693 | v6stat.zero_pos = -1; |
| 694 | v6stat.zero_cnt = 0; |
| 695 | /* Treat the IPv6 representation as a list of values |
| 696 | * separated by ':'. The presence of a '::' will parse |
| 697 | * as one, two or three zero length elements. |
| 698 | */ |
| 699 | if (!CONF_parse_list(in, ':', 0, ipv6_cb, &v6stat)) |
| 700 | return 0; |
| 701 | |
| 702 | /* Now for some sanity checks */ |
| 703 | |
| 704 | if (v6stat.zero_pos == -1) |
| 705 | { |
| 706 | /* If no '::' must have exactly 16 bytes */ |
| 707 | if (v6stat.total != 16) |
| 708 | return 0; |
| 709 | } |
| 710 | else |
| 711 | { |
| 712 | /* If '::' must have less than 16 bytes */ |
| 713 | if (v6stat.total == 16) |
| 714 | return 0; |
| 715 | /* More than three zeroes is an error */ |
| 716 | if (v6stat.zero_cnt > 3) |
| 717 | return 0; |
| 718 | /* Can only have three zeroes if nothing else present */ |
| 719 | else if (v6stat.zero_cnt == 3) |
| 720 | { |
| 721 | if (v6stat.total > 0) |
| 722 | return 0; |
| 723 | } |
| 724 | /* Can only have two zeroes if at start or end */ |
| 725 | else if (v6stat.zero_cnt == 2) |
| 726 | { |
| 727 | if ((v6stat.zero_pos != 0) |
| 728 | && (v6stat.zero_pos != v6stat.total)) |
| 729 | return 0; |
| 730 | } |
| 731 | else |
| 732 | /* Can only have one zero if *not* start or end */ |
| 733 | { |
| 734 | if ((v6stat.zero_pos == 0) |
| 735 | || (v6stat.zero_pos == v6stat.total)) |
| 736 | return 0; |
| 737 | } |
| 738 | } |
| 739 | |
| 740 | /* Format result */ |
| 741 | |
| 742 | if (v6stat.zero_pos >= 0) |
| 743 | { |
| 744 | /* Copy initial part */ |
| 745 | memcpy(v6, v6stat.tmp, v6stat.zero_pos); |
| 746 | /* Zero middle */ |
| 747 | memset(v6 + v6stat.zero_pos, 0, 16 - v6stat.total); |
| 748 | /* Copy final part */ |
| 749 | if (v6stat.total != v6stat.zero_pos) |
| 750 | memcpy(v6 + v6stat.zero_pos + 16 - v6stat.total, |
| 751 | v6stat.tmp + v6stat.zero_pos, |
| 752 | v6stat.total - v6stat.zero_pos); |
| 753 | } |
| 754 | else |
| 755 | memcpy(v6, v6stat.tmp, 16); |
| 756 | |
| 757 | return 1; |
| 758 | } |
| 759 | |
| 760 | static int ipv6_cb(const char *elem, int len, void *usr) |
| 761 | { |
| 762 | IPV6_STAT *s = usr; |
| 763 | /* Error if 16 bytes written */ |
| 764 | if (s->total == 16) |
| 765 | return 0; |
| 766 | if (len == 0) |
| 767 | { |
| 768 | /* Zero length element, corresponds to '::' */ |
| 769 | if (s->zero_pos == -1) |
| 770 | s->zero_pos = s->total; |
| 771 | /* If we've already got a :: its an error */ |
| 772 | else if (s->zero_pos != s->total) |
| 773 | return 0; |
| 774 | s->zero_cnt++; |
| 775 | } |
| 776 | else |
| 777 | { |
| 778 | /* If more than 4 characters could be final a.b.c.d form */ |
| 779 | if (len > 4) |
| 780 | { |
| 781 | /* Need at least 4 bytes left */ |
| 782 | if (s->total > 12) |
| 783 | return 0; |
| 784 | /* Must be end of string */ |
| 785 | if (elem[len]) |
| 786 | return 0; |
| 787 | if (!ipv4_from_asc(s->tmp + s->total, elem)) |
| 788 | return 0; |
| 789 | s->total += 4; |
| 790 | } |
| 791 | else |
| 792 | { |
| 793 | if (!ipv6_hex(s->tmp + s->total, elem, len)) |
| 794 | return 0; |
| 795 | s->total += 2; |
| 796 | } |
| 797 | } |
| 798 | return 1; |
| 799 | } |
| 800 | |
| 801 | /* Convert a string of up to 4 hex digits into the corresponding |
| 802 | * IPv6 form. |
| 803 | */ |
| 804 | |
| 805 | static int ipv6_hex(unsigned char *out, const char *in, int inlen) |
| 806 | { |
| 807 | unsigned char c; |
| 808 | unsigned int num = 0; |
| 809 | if (inlen > 4) |
| 810 | return 0; |
| 811 | while(inlen--) |
| 812 | { |
| 813 | c = *in++; |
| 814 | num <<= 4; |
| 815 | if ((c >= '0') && (c <= '9')) |
| 816 | num |= c - '0'; |
| 817 | else if ((c >= 'A') && (c <= 'F')) |
| 818 | num |= c - 'A' + 10; |
| 819 | else if ((c >= 'a') && (c <= 'f')) |
| 820 | num |= c - 'a' + 10; |
| 821 | else |
| 822 | return 0; |
| 823 | } |
| 824 | out[0] = num >> 8; |
| 825 | out[1] = num & 0xff; |
| 826 | return 1; |
| 827 | } |
| 828 | |
| 829 | |
| 830 | int X509V3_NAME_from_section(X509_NAME *nm, STACK_OF(CONF_VALUE)*dn_sk, |
| 831 | unsigned long chtype) |
| 832 | { |
| 833 | CONF_VALUE *v; |
| 834 | int i, mval; |
| 835 | char *p, *type; |
| 836 | if (!nm) |
| 837 | return 0; |
| 838 | |
| 839 | for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++) |
| 840 | { |
| 841 | v=sk_CONF_VALUE_value(dn_sk,i); |
| 842 | type=v->name; |
| 843 | /* Skip past any leading X. X: X, etc to allow for |
| 844 | * multiple instances |
| 845 | */ |
| 846 | for(p = type; *p ; p++) |
| 847 | #ifndef CHARSET_EBCDIC |
| 848 | if ((*p == ':') || (*p == ',') || (*p == '.')) |
| 849 | #else |
| 850 | if ((*p == os_toascii[':']) || (*p == os_toascii[',']) || (*p == os_toascii['.'])) |
| 851 | #endif |
| 852 | { |
| 853 | p++; |
| 854 | if(*p) type = p; |
| 855 | break; |
| 856 | } |
| 857 | #ifndef CHARSET_EBCDIC |
| 858 | if (*type == '+') |
| 859 | #else |
| 860 | if (*type == os_toascii['+']) |
| 861 | #endif |
| 862 | { |
| 863 | mval = -1; |
| 864 | type++; |
| 865 | } |
| 866 | else |
| 867 | mval = 0; |
| 868 | if (!X509_NAME_add_entry_by_txt(nm,type, chtype, |
| 869 | (unsigned char *) v->value,-1,-1,mval)) |
| 870 | return 0; |
| 871 | |
| 872 | } |
| 873 | return 1; |
| 874 | } |