x509_v3.c revision 55714
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 67int X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x) 68 { 69 if (x == NULL) return(0); 70 return(sk_X509_EXTENSION_num(x)); 71 } 72 73int X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *x, int nid, 74 int lastpos) 75 { 76 ASN1_OBJECT *obj; 77 78 obj=OBJ_nid2obj(nid); 79 if (obj == NULL) return(-2); 80 return(X509v3_get_ext_by_OBJ(x,obj,lastpos)); 81 } 82 83int X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *sk, ASN1_OBJECT *obj, 84 int lastpos) 85 { 86 int n; 87 X509_EXTENSION *ex; 88 89 if (sk == NULL) return(-1); 90 lastpos++; 91 if (lastpos < 0) 92 lastpos=0; 93 n=sk_X509_EXTENSION_num(sk); 94 for ( ; lastpos < n; lastpos++) 95 { 96 ex=sk_X509_EXTENSION_value(sk,lastpos); 97 if (OBJ_cmp(ex->object,obj) == 0) 98 return(lastpos); 99 } 100 return(-1); 101 } 102 103int X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *sk, int crit, 104 int lastpos) 105 { 106 int n; 107 X509_EXTENSION *ex; 108 109 if (sk == NULL) return(-1); 110 lastpos++; 111 if (lastpos < 0) 112 lastpos=0; 113 n=sk_X509_EXTENSION_num(sk); 114 for ( ; lastpos < n; lastpos++) 115 { 116 ex=sk_X509_EXTENSION_value(sk,lastpos); 117 if ( (ex->critical && crit) || 118 (!ex->critical && !crit)) 119 return(lastpos); 120 } 121 return(-1); 122 } 123 124X509_EXTENSION *X509v3_get_ext(const STACK_OF(X509_EXTENSION) *x, int loc) 125 { 126 if (x == NULL || sk_X509_EXTENSION_num(x) <= loc || loc < 0) 127 return NULL; 128 else 129 return sk_X509_EXTENSION_value(x,loc); 130 } 131 132X509_EXTENSION *X509v3_delete_ext(STACK_OF(X509_EXTENSION) *x, int loc) 133 { 134 X509_EXTENSION *ret; 135 136 if (x == NULL || sk_X509_EXTENSION_num(x) <= loc || loc < 0) 137 return(NULL); 138 ret=sk_X509_EXTENSION_delete(x,loc); 139 return(ret); 140 } 141 142STACK_OF(X509_EXTENSION) *X509v3_add_ext(STACK_OF(X509_EXTENSION) **x, 143 X509_EXTENSION *ex, int loc) 144 { 145 X509_EXTENSION *new_ex=NULL; 146 int n; 147 STACK_OF(X509_EXTENSION) *sk=NULL; 148 149 if ((x != NULL) && (*x == NULL)) 150 { 151 if ((sk=sk_X509_EXTENSION_new_null()) == NULL) 152 goto err; 153 } 154 else 155 sk= *x; 156 157 n=sk_X509_EXTENSION_num(sk); 158 if (loc > n) loc=n; 159 else if (loc < 0) loc=n; 160 161 if ((new_ex=X509_EXTENSION_dup(ex)) == NULL) 162 goto err2; 163 if (!sk_X509_EXTENSION_insert(sk,new_ex,loc)) 164 goto err; 165 if ((x != NULL) && (*x == NULL)) 166 *x=sk; 167 return(sk); 168err: 169 X509err(X509_F_X509V3_ADD_EXT,ERR_R_MALLOC_FAILURE); 170err2: 171 if (new_ex != NULL) X509_EXTENSION_free(new_ex); 172 if (sk != NULL) sk_X509_EXTENSION_free(sk); 173 return(NULL); 174 } 175 176X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex, int nid, 177 int crit, ASN1_OCTET_STRING *data) 178 { 179 ASN1_OBJECT *obj; 180 X509_EXTENSION *ret; 181 182 obj=OBJ_nid2obj(nid); 183 if (obj == NULL) 184 { 185 X509err(X509_F_X509_EXTENSION_CREATE_BY_NID,X509_R_UNKNOWN_NID); 186 return(NULL); 187 } 188 ret=X509_EXTENSION_create_by_OBJ(ex,obj,crit,data); 189 if (ret == NULL) ASN1_OBJECT_free(obj); 190 return(ret); 191 } 192 193X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex, 194 ASN1_OBJECT *obj, int crit, ASN1_OCTET_STRING *data) 195 { 196 X509_EXTENSION *ret; 197 198 if ((ex == NULL) || (*ex == NULL)) 199 { 200 if ((ret=X509_EXTENSION_new()) == NULL) 201 { 202 X509err(X509_F_X509_EXTENSION_CREATE_BY_OBJ,ERR_R_MALLOC_FAILURE); 203 return(NULL); 204 } 205 } 206 else 207 ret= *ex; 208 209 if (!X509_EXTENSION_set_object(ret,obj)) 210 goto err; 211 if (!X509_EXTENSION_set_critical(ret,crit)) 212 goto err; 213 if (!X509_EXTENSION_set_data(ret,data)) 214 goto err; 215 216 if ((ex != NULL) && (*ex == NULL)) *ex=ret; 217 return(ret); 218err: 219 if ((ex == NULL) || (ret != *ex)) 220 X509_EXTENSION_free(ret); 221 return(NULL); 222 } 223 224int X509_EXTENSION_set_object(X509_EXTENSION *ex, ASN1_OBJECT *obj) 225 { 226 if ((ex == NULL) || (obj == NULL)) 227 return(0); 228 ASN1_OBJECT_free(ex->object); 229 ex->object=OBJ_dup(obj); 230 return(1); 231 } 232 233int X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit) 234 { 235 if (ex == NULL) return(0); 236 ex->critical=(crit)?0xFF:0; 237 return(1); 238 } 239 240int X509_EXTENSION_set_data(X509_EXTENSION *ex, ASN1_OCTET_STRING *data) 241 { 242 int i; 243 244 if (ex == NULL) return(0); 245 i=ASN1_OCTET_STRING_set(ex->value,data->data,data->length); 246 if (!i) return(0); 247 return(1); 248 } 249 250ASN1_OBJECT *X509_EXTENSION_get_object(X509_EXTENSION *ex) 251 { 252 if (ex == NULL) return(NULL); 253 return(ex->object); 254 } 255 256ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ex) 257 { 258 if (ex == NULL) return(NULL); 259 return(ex->value); 260 } 261 262int X509_EXTENSION_get_critical(X509_EXTENSION *ex) 263 { 264 if (ex == NULL) return(0); 265 return(ex->critical); 266 } 267