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 68 int 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 74 int 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 84 int 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 } 103 104 X509_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 } 111 112 X509_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 } 121 122 STACK_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) && (*x == NULL)) 129 { 130 if ((sk=sk_X509_ATTRIBUTE_new_null()) == NULL) 131 goto err; 132 } 133 else 134 sk= *x; 135 136 if ((new_attr=X509_ATTRIBUTE_dup(attr)) == NULL) 137 goto err2; 138 if (!sk_X509_ATTRIBUTE_push(sk,new_attr)) 139 goto err; 140 if ((x != NULL) && (*x == NULL)) 141 *x=sk; 142 return(sk); 143 err: 144 X509err(X509_F_X509_ADD_ATTR,ERR_R_MALLOC_FAILURE); 145 err2: 146 if (new_attr != NULL) X509_ATTRIBUTE_free(new_attr); 147 if (sk != NULL) sk_X509_ATTRIBUTE_free(sk); 148 return(NULL); 149 } 150 151 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE) **x, 152 ASN1_OBJECT *obj, int type, 153 unsigned char *bytes, int len) 154 { 155 X509_ATTRIBUTE *attr; 156 STACK_OF(X509_ATTRIBUTE) *ret; 157 attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len); 158 if(!attr) return 0; 159 ret = X509at_add1_attr(x, attr); 160 X509_ATTRIBUTE_free(attr); 161 return ret; 162 } 163 164 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE) **x, 165 int nid, int type, 166 unsigned char *bytes, int len) 167 { 168 X509_ATTRIBUTE *attr; 169 STACK_OF(X509_ATTRIBUTE) *ret; 170 attr = X509_ATTRIBUTE_create_by_NID(NULL, nid, type, bytes, len); 171 if(!attr) return 0; 172 ret = X509at_add1_attr(x, attr); 173 X509_ATTRIBUTE_free(attr); 174 return ret; 175 } 176 177 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE) **x, 178 char *attrname, int type, 179 unsigned char *bytes, int len) 180 { 181 X509_ATTRIBUTE *attr; 182 STACK_OF(X509_ATTRIBUTE) *ret; 183 attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len); 184 if(!attr) return 0; 185 ret = X509at_add1_attr(x, attr); 186 X509_ATTRIBUTE_free(attr); 187 return ret; 188 } 189 190 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid, 191 int atrtype, void *data, int len) 192 { 193 ASN1_OBJECT *obj; 194 X509_ATTRIBUTE *ret; 195 196 obj=OBJ_nid2obj(nid); 197 if (obj == NULL) 198 { 199 X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_NID,X509_R_UNKNOWN_NID); 200 return(NULL); 201 } 202 ret=X509_ATTRIBUTE_create_by_OBJ(attr,obj,atrtype,data,len); 203 if (ret == NULL) ASN1_OBJECT_free(obj); 204 return(ret); 205 } 206 207 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr, 208 ASN1_OBJECT *obj, int atrtype, void *data, int len) 209 { 210 X509_ATTRIBUTE *ret; 211 212 if ((attr == NULL) || (*attr == NULL)) 213 { 214 if ((ret=X509_ATTRIBUTE_new()) == NULL) 215 { 216 X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_OBJ,ERR_R_MALLOC_FAILURE); 217 return(NULL); 218 } 219 } 220 else 221 ret= *attr; 222 223 if (!X509_ATTRIBUTE_set1_object(ret,obj)) 224 goto err; 225 if (!X509_ATTRIBUTE_set1_data(ret,atrtype,data,len)) 226 goto err; 227 228 if ((attr != NULL) && (*attr == NULL)) *attr=ret; 229 return(ret); 230 err: 231 if ((attr == NULL) || (ret != *attr)) 232 X509_ATTRIBUTE_free(ret); 233 return(NULL); 234 } 235 236 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr, 237 char *atrname, int type, unsigned char *bytes, int len) 238 { 239 ASN1_OBJECT *obj; 240 X509_ATTRIBUTE *nattr; 241 242 obj=OBJ_txt2obj(atrname, 0); 243 if (obj == NULL) 244 { 245 X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_TXT, 246 X509_R_INVALID_FIELD_NAME); 247 ERR_add_error_data(2, "name=", atrname); 248 return(NULL); 249 } 250 nattr = X509_ATTRIBUTE_create_by_OBJ(attr,obj,type,bytes,len); 251 ASN1_OBJECT_free(obj); 252 return nattr; 253 } 254 255 int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, ASN1_OBJECT *obj) 256 { 257 if ((attr == NULL) || (obj == NULL)) 258 return(0); 259 ASN1_OBJECT_free(attr->object); 260 attr->object=OBJ_dup(obj); 261 return(1); 262 } 263 264 int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype, void *data, int len) 265 { 266 ASN1_TYPE *ttmp; 267 ASN1_STRING *stmp; 268 int atype; 269 if (!attr) return 0; 270 if(attrtype & MBSTRING_FLAG) { 271 stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype, 272 OBJ_obj2nid(attr->object)); 273 if(!stmp) { 274 X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_ASN1_LIB); 275 return 0; 276 } 277 atype = stmp->type; 278 } else { 279 if(!(stmp = ASN1_STRING_type_new(attrtype))) goto err; 280 if(!ASN1_STRING_set(stmp, data, len)) goto err; 281 atype = attrtype; 282 } 283 if(!(attr->value.set = sk_ASN1_TYPE_new_null())) goto err; 284 if(!(ttmp = ASN1_TYPE_new())) goto err; 285 if(!sk_ASN1_TYPE_push(attr->value.set, ttmp)) goto err; 286 attr->set = 1; 287 ASN1_TYPE_set(ttmp, atype, stmp); 288 return 1; 289 err: 290 X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_MALLOC_FAILURE); 291 return 0; 292 } 293 294 int X509_ATTRIBUTE_count(X509_ATTRIBUTE *attr) 295 { 296 if(attr->set) return sk_ASN1_TYPE_num(attr->value.set); 297 if(attr->value.single) return 1; 298 return 0; 299 } 300 301 ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr) 302 { 303 if (attr == NULL) return(NULL); 304 return(attr->object); 305 } 306 307 void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx, 308 int atrtype, void *data) 309 { 310 ASN1_TYPE *ttmp; 311 ttmp = X509_ATTRIBUTE_get0_type(attr, idx); 312 if(!ttmp) return NULL; 313 if(atrtype != ASN1_TYPE_get(ttmp)){ 314 X509err(X509_F_X509_ATTRIBUTE_GET0_DATA, X509_R_WRONG_TYPE); 315 return NULL; 316 } 317 return ttmp->value.ptr; 318 } 319 320 ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx) 321 { 322 if (attr == NULL) return(NULL); 323 if(idx >= X509_ATTRIBUTE_count(attr)) return NULL; 324 if(attr->set) return sk_ASN1_TYPE_value(attr->value.set, idx); 325 else return attr->value.single; 326 } 327