x509_v3.c revision 296341
1/* crypto/x509/x509_v3.c */ 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#include <openssl/stack.h> 61#include "cryptlib.h" 62#include <openssl/asn1.h> 63#include <openssl/objects.h> 64#include <openssl/evp.h> 65#include <openssl/x509.h> 66#include <openssl/x509v3.h> 67 68int X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x) 69{ 70 if (x == NULL) 71 return (0); 72 return (sk_X509_EXTENSION_num(x)); 73} 74 75int X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *x, int nid, 76 int lastpos) 77{ 78 ASN1_OBJECT *obj; 79 80 obj = OBJ_nid2obj(nid); 81 if (obj == NULL) 82 return (-2); 83 return (X509v3_get_ext_by_OBJ(x, obj, lastpos)); 84} 85 86int X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *sk, 87 ASN1_OBJECT *obj, int lastpos) 88{ 89 int n; 90 X509_EXTENSION *ex; 91 92 if (sk == NULL) 93 return (-1); 94 lastpos++; 95 if (lastpos < 0) 96 lastpos = 0; 97 n = sk_X509_EXTENSION_num(sk); 98 for (; lastpos < n; lastpos++) { 99 ex = sk_X509_EXTENSION_value(sk, lastpos); 100 if (OBJ_cmp(ex->object, obj) == 0) 101 return (lastpos); 102 } 103 return (-1); 104} 105 106int X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *sk, int crit, 107 int lastpos) 108{ 109 int n; 110 X509_EXTENSION *ex; 111 112 if (sk == NULL) 113 return (-1); 114 lastpos++; 115 if (lastpos < 0) 116 lastpos = 0; 117 n = sk_X509_EXTENSION_num(sk); 118 for (; lastpos < n; lastpos++) { 119 ex = sk_X509_EXTENSION_value(sk, lastpos); 120 if (((ex->critical > 0) && crit) || ((ex->critical <= 0) && !crit)) 121 return (lastpos); 122 } 123 return (-1); 124} 125 126X509_EXTENSION *X509v3_get_ext(const STACK_OF(X509_EXTENSION) *x, int loc) 127{ 128 if (x == NULL || sk_X509_EXTENSION_num(x) <= loc || loc < 0) 129 return NULL; 130 else 131 return sk_X509_EXTENSION_value(x, loc); 132} 133 134X509_EXTENSION *X509v3_delete_ext(STACK_OF(X509_EXTENSION) *x, int loc) 135{ 136 X509_EXTENSION *ret; 137 138 if (x == NULL || sk_X509_EXTENSION_num(x) <= loc || loc < 0) 139 return (NULL); 140 ret = sk_X509_EXTENSION_delete(x, loc); 141 return (ret); 142} 143 144STACK_OF(X509_EXTENSION) *X509v3_add_ext(STACK_OF(X509_EXTENSION) **x, 145 X509_EXTENSION *ex, int loc) 146{ 147 X509_EXTENSION *new_ex = NULL; 148 int n; 149 STACK_OF(X509_EXTENSION) *sk = NULL; 150 151 if (x == NULL) { 152 X509err(X509_F_X509V3_ADD_EXT, ERR_R_PASSED_NULL_PARAMETER); 153 goto err2; 154 } 155 156 if (*x == NULL) { 157 if ((sk = sk_X509_EXTENSION_new_null()) == NULL) 158 goto err; 159 } else 160 sk = *x; 161 162 n = sk_X509_EXTENSION_num(sk); 163 if (loc > n) 164 loc = n; 165 else if (loc < 0) 166 loc = n; 167 168 if ((new_ex = X509_EXTENSION_dup(ex)) == NULL) 169 goto err2; 170 if (!sk_X509_EXTENSION_insert(sk, new_ex, loc)) 171 goto err; 172 if (*x == NULL) 173 *x = sk; 174 return (sk); 175 err: 176 X509err(X509_F_X509V3_ADD_EXT, ERR_R_MALLOC_FAILURE); 177 err2: 178 if (new_ex != NULL) 179 X509_EXTENSION_free(new_ex); 180 if (sk != NULL) 181 sk_X509_EXTENSION_free(sk); 182 return (NULL); 183} 184 185X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex, int nid, 186 int crit, 187 ASN1_OCTET_STRING *data) 188{ 189 ASN1_OBJECT *obj; 190 X509_EXTENSION *ret; 191 192 obj = OBJ_nid2obj(nid); 193 if (obj == NULL) { 194 X509err(X509_F_X509_EXTENSION_CREATE_BY_NID, X509_R_UNKNOWN_NID); 195 return (NULL); 196 } 197 ret = X509_EXTENSION_create_by_OBJ(ex, obj, crit, data); 198 if (ret == NULL) 199 ASN1_OBJECT_free(obj); 200 return (ret); 201} 202 203X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex, 204 ASN1_OBJECT *obj, int crit, 205 ASN1_OCTET_STRING *data) 206{ 207 X509_EXTENSION *ret; 208 209 if ((ex == NULL) || (*ex == NULL)) { 210 if ((ret = X509_EXTENSION_new()) == NULL) { 211 X509err(X509_F_X509_EXTENSION_CREATE_BY_OBJ, 212 ERR_R_MALLOC_FAILURE); 213 return (NULL); 214 } 215 } else 216 ret = *ex; 217 218 if (!X509_EXTENSION_set_object(ret, obj)) 219 goto err; 220 if (!X509_EXTENSION_set_critical(ret, crit)) 221 goto err; 222 if (!X509_EXTENSION_set_data(ret, data)) 223 goto err; 224 225 if ((ex != NULL) && (*ex == NULL)) 226 *ex = ret; 227 return (ret); 228 err: 229 if ((ex == NULL) || (ret != *ex)) 230 X509_EXTENSION_free(ret); 231 return (NULL); 232} 233 234int X509_EXTENSION_set_object(X509_EXTENSION *ex, ASN1_OBJECT *obj) 235{ 236 if ((ex == NULL) || (obj == NULL)) 237 return (0); 238 ASN1_OBJECT_free(ex->object); 239 ex->object = OBJ_dup(obj); 240 return (1); 241} 242 243int X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit) 244{ 245 if (ex == NULL) 246 return (0); 247 ex->critical = (crit) ? 0xFF : -1; 248 return (1); 249} 250 251int X509_EXTENSION_set_data(X509_EXTENSION *ex, ASN1_OCTET_STRING *data) 252{ 253 int i; 254 255 if (ex == NULL) 256 return (0); 257 i = M_ASN1_OCTET_STRING_set(ex->value, data->data, data->length); 258 if (!i) 259 return (0); 260 return (1); 261} 262 263ASN1_OBJECT *X509_EXTENSION_get_object(X509_EXTENSION *ex) 264{ 265 if (ex == NULL) 266 return (NULL); 267 return (ex->object); 268} 269 270ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ex) 271{ 272 if (ex == NULL) 273 return (NULL); 274 return (ex->value); 275} 276 277int X509_EXTENSION_get_critical(X509_EXTENSION *ex) 278{ 279 if (ex == NULL) 280 return (0); 281 if (ex->critical > 0) 282 return 1; 283 return 0; 284} 285