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