1/* crypto/x509/x509_att.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 X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x) 69{ 70 if (!x) return 0; 71 return(sk_X509_ATTRIBUTE_num(x)); 72} 73 74int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *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(X509at_get_attr_by_OBJ(x,obj,lastpos)); 82} 83 84int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk, ASN1_OBJECT *obj, 85 int lastpos) 86{ 87 int n; 88 X509_ATTRIBUTE *ex; 89 90 if (sk == NULL) return(-1); 91 lastpos++; 92 if (lastpos < 0) 93 lastpos=0; 94 n=sk_X509_ATTRIBUTE_num(sk); 95 for ( ; lastpos < n; lastpos++) 96 { 97 ex=sk_X509_ATTRIBUTE_value(sk,lastpos); 98 if (OBJ_cmp(ex->object,obj) == 0) 99 return(lastpos); 100 } 101 return(-1); 102} 103 104X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc) 105{ 106 if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0) 107 return NULL; 108 else 109 return sk_X509_ATTRIBUTE_value(x,loc); 110} 111 112X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc) 113{ 114 X509_ATTRIBUTE *ret; 115 116 if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0) 117 return(NULL); 118 ret=sk_X509_ATTRIBUTE_delete(x,loc); 119 return(ret); 120} 121 122STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x, 123 X509_ATTRIBUTE *attr) 124{ 125 X509_ATTRIBUTE *new_attr=NULL; 126 STACK_OF(X509_ATTRIBUTE) *sk=NULL; 127 128 if (x == NULL) 129 { 130 X509err(X509_F_X509AT_ADD1_ATTR, ERR_R_PASSED_NULL_PARAMETER); 131 goto err2; 132 } 133 134 if (*x == NULL) 135 { 136 if ((sk=sk_X509_ATTRIBUTE_new_null()) == NULL) 137 goto err; 138 } 139 else 140 sk= *x; 141 142 if ((new_attr=X509_ATTRIBUTE_dup(attr)) == NULL) 143 goto err2; 144 if (!sk_X509_ATTRIBUTE_push(sk,new_attr)) 145 goto err; 146 if (*x == NULL) 147 *x=sk; 148 return(sk); 149err: 150 X509err(X509_F_X509AT_ADD1_ATTR,ERR_R_MALLOC_FAILURE); 151err2: 152 if (new_attr != NULL) X509_ATTRIBUTE_free(new_attr); 153 if (sk != NULL) sk_X509_ATTRIBUTE_free(sk); 154 return(NULL); 155} 156 157STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE) **x, 158 const ASN1_OBJECT *obj, int type, 159 const unsigned char *bytes, int len) 160{ 161 X509_ATTRIBUTE *attr; 162 STACK_OF(X509_ATTRIBUTE) *ret; 163 attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len); 164 if(!attr) return 0; 165 ret = X509at_add1_attr(x, attr); 166 X509_ATTRIBUTE_free(attr); 167 return ret; 168} 169 170STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE) **x, 171 int nid, int type, 172 const unsigned char *bytes, int len) 173{ 174 X509_ATTRIBUTE *attr; 175 STACK_OF(X509_ATTRIBUTE) *ret; 176 attr = X509_ATTRIBUTE_create_by_NID(NULL, nid, type, bytes, len); 177 if(!attr) return 0; 178 ret = X509at_add1_attr(x, attr); 179 X509_ATTRIBUTE_free(attr); 180 return ret; 181} 182 183STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE) **x, 184 const char *attrname, int type, 185 const unsigned char *bytes, int len) 186{ 187 X509_ATTRIBUTE *attr; 188 STACK_OF(X509_ATTRIBUTE) *ret; 189 attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len); 190 if(!attr) return 0; 191 ret = X509at_add1_attr(x, attr); 192 X509_ATTRIBUTE_free(attr); 193 return ret; 194} 195 196X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid, 197 int atrtype, const void *data, int len) 198{ 199 ASN1_OBJECT *obj; 200 X509_ATTRIBUTE *ret; 201 202 obj=OBJ_nid2obj(nid); 203 if (obj == NULL) 204 { 205 X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_NID,X509_R_UNKNOWN_NID); 206 return(NULL); 207 } 208 ret=X509_ATTRIBUTE_create_by_OBJ(attr,obj,atrtype,data,len); 209 if (ret == NULL) ASN1_OBJECT_free(obj); 210 return(ret); 211} 212 213X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr, 214 const ASN1_OBJECT *obj, int atrtype, const void *data, int len) 215{ 216 X509_ATTRIBUTE *ret; 217 218 if ((attr == NULL) || (*attr == NULL)) 219 { 220 if ((ret=X509_ATTRIBUTE_new()) == NULL) 221 { 222 X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_OBJ,ERR_R_MALLOC_FAILURE); 223 return(NULL); 224 } 225 } 226 else 227 ret= *attr; 228 229 if (!X509_ATTRIBUTE_set1_object(ret,obj)) 230 goto err; 231 if (!X509_ATTRIBUTE_set1_data(ret,atrtype,data,len)) 232 goto err; 233 234 if ((attr != NULL) && (*attr == NULL)) *attr=ret; 235 return(ret); 236err: 237 if ((attr == NULL) || (ret != *attr)) 238 X509_ATTRIBUTE_free(ret); 239 return(NULL); 240} 241 242X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr, 243 const char *atrname, int type, const unsigned char *bytes, int len) 244 { 245 ASN1_OBJECT *obj; 246 X509_ATTRIBUTE *nattr; 247 248 obj=OBJ_txt2obj(atrname, 0); 249 if (obj == NULL) 250 { 251 X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_TXT, 252 X509_R_INVALID_FIELD_NAME); 253 ERR_add_error_data(2, "name=", atrname); 254 return(NULL); 255 } 256 nattr = X509_ATTRIBUTE_create_by_OBJ(attr,obj,type,bytes,len); 257 ASN1_OBJECT_free(obj); 258 return nattr; 259 } 260 261int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj) 262{ 263 if ((attr == NULL) || (obj == NULL)) 264 return(0); 265 ASN1_OBJECT_free(attr->object); 266 attr->object=OBJ_dup(obj); 267 return(1); 268} 269 270int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype, const void *data, int len) 271{ 272 ASN1_TYPE *ttmp; 273 ASN1_STRING *stmp; 274 int atype; 275 if (!attr) return 0; 276 if(attrtype & MBSTRING_FLAG) { 277 stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype, 278 OBJ_obj2nid(attr->object)); 279 if(!stmp) { 280 X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_ASN1_LIB); 281 return 0; 282 } 283 atype = stmp->type; 284 } else { 285 if(!(stmp = ASN1_STRING_type_new(attrtype))) goto err; 286 if(!ASN1_STRING_set(stmp, data, len)) goto err; 287 atype = attrtype; 288 } 289 if(!(attr->value.set = sk_ASN1_TYPE_new_null())) goto err; 290 if(!(ttmp = ASN1_TYPE_new())) goto err; 291 if(!sk_ASN1_TYPE_push(attr->value.set, ttmp)) goto err; 292 attr->single = 0; 293 ASN1_TYPE_set(ttmp, atype, stmp); 294 return 1; 295 err: 296 X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_MALLOC_FAILURE); 297 return 0; 298} 299 300int X509_ATTRIBUTE_count(X509_ATTRIBUTE *attr) 301{ 302 if(!attr->single) return sk_ASN1_TYPE_num(attr->value.set); 303 if(attr->value.single) return 1; 304 return 0; 305} 306 307ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr) 308{ 309 if (attr == NULL) return(NULL); 310 return(attr->object); 311} 312 313void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx, 314 int atrtype, void *data) 315{ 316 ASN1_TYPE *ttmp; 317 ttmp = X509_ATTRIBUTE_get0_type(attr, idx); 318 if(!ttmp) return NULL; 319 if(atrtype != ASN1_TYPE_get(ttmp)){ 320 X509err(X509_F_X509_ATTRIBUTE_GET0_DATA, X509_R_WRONG_TYPE); 321 return NULL; 322 } 323 return ttmp->value.ptr; 324} 325 326ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx) 327{ 328 if (attr == NULL) return(NULL); 329 if(idx >= X509_ATTRIBUTE_count(attr)) return NULL; 330 if(!attr->single) return sk_ASN1_TYPE_value(attr->value.set, idx); 331 else return attr->value.single; 332} 333