1 /* $OpenBSD: x509_v3.c,v 1.20 2022/11/26 16:08:55 tb Exp $ */ 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 61 #include <openssl/asn1.h> 62 #include <openssl/err.h> 63 #include <openssl/evp.h> 64 #include <openssl/objects.h> 65 #include <openssl/stack.h> 66 #include <openssl/x509.h> 67 #include <openssl/x509v3.h> 68 69 #include "x509_local.h" 70 71 int 72 X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x) 73 { 74 if (x == NULL) 75 return (0); 76 return (sk_X509_EXTENSION_num(x)); 77 } 78 LCRYPTO_ALIAS(X509v3_get_ext_count) 79 80 int 81 X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *x, int nid, int lastpos) 82 { 83 ASN1_OBJECT *obj; 84 85 obj = OBJ_nid2obj(nid); 86 if (obj == NULL) 87 return (-2); 88 return (X509v3_get_ext_by_OBJ(x, obj, lastpos)); 89 } 90 LCRYPTO_ALIAS(X509v3_get_ext_by_NID) 91 92 int 93 X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *sk, 94 const ASN1_OBJECT *obj, int lastpos) 95 { 96 int n; 97 X509_EXTENSION *ex; 98 99 if (sk == NULL) 100 return (-1); 101 lastpos++; 102 if (lastpos < 0) 103 lastpos = 0; 104 n = sk_X509_EXTENSION_num(sk); 105 for (; lastpos < n; lastpos++) { 106 ex = sk_X509_EXTENSION_value(sk, lastpos); 107 if (OBJ_cmp(ex->object, obj) == 0) 108 return (lastpos); 109 } 110 return (-1); 111 } 112 LCRYPTO_ALIAS(X509v3_get_ext_by_OBJ) 113 114 int 115 X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *sk, int crit, 116 int lastpos) 117 { 118 int n; 119 X509_EXTENSION *ex; 120 121 if (sk == NULL) 122 return (-1); 123 lastpos++; 124 if (lastpos < 0) 125 lastpos = 0; 126 n = sk_X509_EXTENSION_num(sk); 127 for (; lastpos < n; lastpos++) { 128 ex = sk_X509_EXTENSION_value(sk, lastpos); 129 if (((ex->critical > 0) && crit) || 130 ((ex->critical <= 0) && !crit)) 131 return (lastpos); 132 } 133 return (-1); 134 } 135 LCRYPTO_ALIAS(X509v3_get_ext_by_critical) 136 137 X509_EXTENSION * 138 X509v3_get_ext(const STACK_OF(X509_EXTENSION) *x, int loc) 139 { 140 if (x == NULL || sk_X509_EXTENSION_num(x) <= loc || loc < 0) 141 return NULL; 142 else 143 return sk_X509_EXTENSION_value(x, loc); 144 } 145 LCRYPTO_ALIAS(X509v3_get_ext) 146 147 X509_EXTENSION * 148 X509v3_delete_ext(STACK_OF(X509_EXTENSION) *x, int loc) 149 { 150 X509_EXTENSION *ret; 151 152 if (x == NULL || sk_X509_EXTENSION_num(x) <= loc || loc < 0) 153 return (NULL); 154 ret = sk_X509_EXTENSION_delete(x, loc); 155 return (ret); 156 } 157 LCRYPTO_ALIAS(X509v3_delete_ext) 158 159 STACK_OF(X509_EXTENSION) * 160 X509v3_add_ext(STACK_OF(X509_EXTENSION) **x, X509_EXTENSION *ex, int loc) 161 { 162 X509_EXTENSION *new_ex = NULL; 163 int n; 164 STACK_OF(X509_EXTENSION) *sk = NULL; 165 166 if (x == NULL) { 167 X509error(ERR_R_PASSED_NULL_PARAMETER); 168 goto err2; 169 } 170 171 if (*x == NULL) { 172 if ((sk = sk_X509_EXTENSION_new_null()) == NULL) 173 goto err; 174 } else 175 sk= *x; 176 177 n = sk_X509_EXTENSION_num(sk); 178 if (loc > n) 179 loc = n; 180 else if (loc < 0) 181 loc = n; 182 183 if ((new_ex = X509_EXTENSION_dup(ex)) == NULL) 184 goto err2; 185 if (!sk_X509_EXTENSION_insert(sk, new_ex, loc)) 186 goto err; 187 if (*x == NULL) 188 *x = sk; 189 return (sk); 190 191 err: 192 X509error(ERR_R_MALLOC_FAILURE); 193 err2: 194 if (new_ex != NULL) 195 X509_EXTENSION_free(new_ex); 196 if (sk != NULL && (x != NULL && sk != *x)) 197 sk_X509_EXTENSION_free(sk); 198 return (NULL); 199 } 200 LCRYPTO_ALIAS(X509v3_add_ext) 201 202 X509_EXTENSION * 203 X509_EXTENSION_create_by_NID(X509_EXTENSION **ex, int nid, int crit, 204 ASN1_OCTET_STRING *data) 205 { 206 ASN1_OBJECT *obj; 207 X509_EXTENSION *ret; 208 209 obj = OBJ_nid2obj(nid); 210 if (obj == NULL) { 211 X509error(X509_R_UNKNOWN_NID); 212 return (NULL); 213 } 214 ret = X509_EXTENSION_create_by_OBJ(ex, obj, crit, data); 215 if (ret == NULL) 216 ASN1_OBJECT_free(obj); 217 return (ret); 218 } 219 LCRYPTO_ALIAS(X509_EXTENSION_create_by_NID) 220 221 X509_EXTENSION * 222 X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex, const ASN1_OBJECT *obj, 223 int crit, ASN1_OCTET_STRING *data) 224 { 225 X509_EXTENSION *ret; 226 227 if ((ex == NULL) || (*ex == NULL)) { 228 if ((ret = X509_EXTENSION_new()) == NULL) { 229 X509error(ERR_R_MALLOC_FAILURE); 230 return (NULL); 231 } 232 } else 233 ret= *ex; 234 235 if (!X509_EXTENSION_set_object(ret, obj)) 236 goto err; 237 if (!X509_EXTENSION_set_critical(ret, crit)) 238 goto err; 239 if (!X509_EXTENSION_set_data(ret, data)) 240 goto err; 241 242 if ((ex != NULL) && (*ex == NULL)) 243 *ex = ret; 244 return (ret); 245 246 err: 247 if ((ex == NULL) || (ret != *ex)) 248 X509_EXTENSION_free(ret); 249 return (NULL); 250 } 251 LCRYPTO_ALIAS(X509_EXTENSION_create_by_OBJ) 252 253 int 254 X509_EXTENSION_set_object(X509_EXTENSION *ex, const ASN1_OBJECT *obj) 255 { 256 if ((ex == NULL) || (obj == NULL)) 257 return (0); 258 ASN1_OBJECT_free(ex->object); 259 ex->object = OBJ_dup(obj); 260 return ex->object != NULL; 261 } 262 LCRYPTO_ALIAS(X509_EXTENSION_set_object) 263 264 int 265 X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit) 266 { 267 if (ex == NULL) 268 return (0); 269 ex->critical = (crit) ? 0xFF : -1; 270 return (1); 271 } 272 LCRYPTO_ALIAS(X509_EXTENSION_set_critical) 273 274 int 275 X509_EXTENSION_set_data(X509_EXTENSION *ex, ASN1_OCTET_STRING *data) 276 { 277 int i; 278 279 if (ex == NULL) 280 return (0); 281 i = ASN1_STRING_set(ex->value, data->data, data->length); 282 if (!i) 283 return (0); 284 return (1); 285 } 286 LCRYPTO_ALIAS(X509_EXTENSION_set_data) 287 288 ASN1_OBJECT * 289 X509_EXTENSION_get_object(X509_EXTENSION *ex) 290 { 291 if (ex == NULL) 292 return (NULL); 293 return (ex->object); 294 } 295 LCRYPTO_ALIAS(X509_EXTENSION_get_object) 296 297 ASN1_OCTET_STRING * 298 X509_EXTENSION_get_data(X509_EXTENSION *ex) 299 { 300 if (ex == NULL) 301 return (NULL); 302 return (ex->value); 303 } 304 LCRYPTO_ALIAS(X509_EXTENSION_get_data) 305 306 int 307 X509_EXTENSION_get_critical(const X509_EXTENSION *ex) 308 { 309 if (ex == NULL) 310 return (0); 311 if (ex->critical > 0) 312 return 1; 313 return 0; 314 } 315 LCRYPTO_ALIAS(X509_EXTENSION_get_critical) 316