1 /* crypto/x509/x509_att.c */ 2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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 return sk_X509_ATTRIBUTE_num(x); 71 } 72 73 int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *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(X509at_get_attr_by_OBJ(x,obj,lastpos)); 81 } 82 83 int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk, ASN1_OBJECT *obj, 84 int lastpos) 85 { 86 int n; 87 X509_ATTRIBUTE *ex; 88 89 if (sk == NULL) return(-1); 90 lastpos++; 91 if (lastpos < 0) 92 lastpos=0; 93 n=sk_X509_ATTRIBUTE_num(sk); 94 for ( ; lastpos < n; lastpos++) 95 { 96 ex=sk_X509_ATTRIBUTE_value(sk,lastpos); 97 if (OBJ_cmp(ex->object,obj) == 0) 98 return(lastpos); 99 } 100 return(-1); 101 } 102 103 X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc) 104 { 105 if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0) 106 return NULL; 107 else 108 return sk_X509_ATTRIBUTE_value(x,loc); 109 } 110 111 X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc) 112 { 113 X509_ATTRIBUTE *ret; 114 115 if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0) 116 return(NULL); 117 ret=sk_X509_ATTRIBUTE_delete(x,loc); 118 return(ret); 119 } 120 121 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x, 122 X509_ATTRIBUTE *attr) 123 { 124 X509_ATTRIBUTE *new_attr=NULL; 125 STACK_OF(X509_ATTRIBUTE) *sk=NULL; 126 127 if (x == NULL) 128 { 129 X509err(X509_F_X509AT_ADD1_ATTR, ERR_R_PASSED_NULL_PARAMETER); 130 goto err2; 131 } 132 133 if (*x == NULL) 134 { 135 if ((sk=sk_X509_ATTRIBUTE_new_null()) == NULL) 136 goto err; 137 } 138 else 139 sk= *x; 140 141 if ((new_attr=X509_ATTRIBUTE_dup(attr)) == NULL) 142 goto err2; 143 if (!sk_X509_ATTRIBUTE_push(sk,new_attr)) 144 goto err; 145 if (*x == NULL) 146 *x=sk; 147 return(sk); 148 err: 149 X509err(X509_F_X509AT_ADD1_ATTR,ERR_R_MALLOC_FAILURE); 150 err2: 151 if (new_attr != NULL) X509_ATTRIBUTE_free(new_attr); 152 if (sk != NULL) sk_X509_ATTRIBUTE_free(sk); 153 return(NULL); 154 } 155 156 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE) **x, 157 const ASN1_OBJECT *obj, int type, 158 const unsigned char *bytes, int len) 159 { 160 X509_ATTRIBUTE *attr; 161 STACK_OF(X509_ATTRIBUTE) *ret; 162 attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len); 163 if(!attr) return 0; 164 ret = X509at_add1_attr(x, attr); 165 X509_ATTRIBUTE_free(attr); 166 return ret; 167 } 168 169 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE) **x, 170 int nid, int type, 171 const unsigned char *bytes, int len) 172 { 173 X509_ATTRIBUTE *attr; 174 STACK_OF(X509_ATTRIBUTE) *ret; 175 attr = X509_ATTRIBUTE_create_by_NID(NULL, nid, type, bytes, len); 176 if(!attr) return 0; 177 ret = X509at_add1_attr(x, attr); 178 X509_ATTRIBUTE_free(attr); 179 return ret; 180 } 181 182 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE) **x, 183 const char *attrname, int type, 184 const unsigned char *bytes, int len) 185 { 186 X509_ATTRIBUTE *attr; 187 STACK_OF(X509_ATTRIBUTE) *ret; 188 attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len); 189 if(!attr) return 0; 190 ret = X509at_add1_attr(x, attr); 191 X509_ATTRIBUTE_free(attr); 192 return ret; 193 } 194 195 void *X509at_get0_data_by_OBJ(STACK_OF(X509_ATTRIBUTE) *x, 196 ASN1_OBJECT *obj, int lastpos, int type) 197 { 198 int i; 199 X509_ATTRIBUTE *at; 200 i = X509at_get_attr_by_OBJ(x, obj, lastpos); 201 if (i == -1) 202 return NULL; 203 if ((lastpos <= -2) && (X509at_get_attr_by_OBJ(x, obj, i) != -1)) 204 return NULL; 205 at = X509at_get_attr(x, i); 206 if (lastpos <= -3 && (X509_ATTRIBUTE_count(at) != 1)) 207 return NULL; 208 return X509_ATTRIBUTE_get0_data(at, 0, type, NULL); 209 } 210 211 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid, 212 int atrtype, const void *data, int len) 213 { 214 ASN1_OBJECT *obj; 215 X509_ATTRIBUTE *ret; 216 217 obj=OBJ_nid2obj(nid); 218 if (obj == NULL) 219 { 220 X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_NID,X509_R_UNKNOWN_NID); 221 return(NULL); 222 } 223 ret=X509_ATTRIBUTE_create_by_OBJ(attr,obj,atrtype,data,len); 224 if (ret == NULL) ASN1_OBJECT_free(obj); 225 return(ret); 226 } 227 228 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr, 229 const ASN1_OBJECT *obj, int atrtype, const void *data, int len) 230 { 231 X509_ATTRIBUTE *ret; 232 233 if ((attr == NULL) || (*attr == NULL)) 234 { 235 if ((ret=X509_ATTRIBUTE_new()) == NULL) 236 { 237 X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_OBJ,ERR_R_MALLOC_FAILURE); 238 return(NULL); 239 } 240 } 241 else 242 ret= *attr; 243 244 if (!X509_ATTRIBUTE_set1_object(ret,obj)) 245 goto err; 246 if (!X509_ATTRIBUTE_set1_data(ret,atrtype,data,len)) 247 goto err; 248 249 if ((attr != NULL) && (*attr == NULL)) *attr=ret; 250 return(ret); 251 err: 252 if ((attr == NULL) || (ret != *attr)) 253 X509_ATTRIBUTE_free(ret); 254 return(NULL); 255 } 256 257 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr, 258 const char *atrname, int type, const unsigned char *bytes, int len) 259 { 260 ASN1_OBJECT *obj; 261 X509_ATTRIBUTE *nattr; 262 263 obj=OBJ_txt2obj(atrname, 0); 264 if (obj == NULL) 265 { 266 X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_TXT, 267 X509_R_INVALID_FIELD_NAME); 268 ERR_add_error_data(2, "name=", atrname); 269 return(NULL); 270 } 271 nattr = X509_ATTRIBUTE_create_by_OBJ(attr,obj,type,bytes,len); 272 ASN1_OBJECT_free(obj); 273 return nattr; 274 } 275 276 int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj) 277 { 278 if ((attr == NULL) || (obj == NULL)) 279 return(0); 280 ASN1_OBJECT_free(attr->object); 281 attr->object=OBJ_dup(obj); 282 return(1); 283 } 284 285 int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype, const void *data, int len) 286 { 287 ASN1_TYPE *ttmp; 288 ASN1_STRING *stmp = NULL; 289 int atype = 0; 290 if (!attr) return 0; 291 if(attrtype & MBSTRING_FLAG) { 292 stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype, 293 OBJ_obj2nid(attr->object)); 294 if(!stmp) { 295 X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_ASN1_LIB); 296 return 0; 297 } 298 atype = stmp->type; 299 } else if (len != -1){ 300 if(!(stmp = ASN1_STRING_type_new(attrtype))) goto err; 301 if(!ASN1_STRING_set(stmp, data, len)) goto err; 302 atype = attrtype; 303 } 304 if(!(attr->value.set = sk_ASN1_TYPE_new_null())) goto err; 305 attr->single = 0; 306 /* This is a bit naughty because the attribute should really have 307 * at least one value but some types use and zero length SET and 308 * require this. 309 */ 310 if (attrtype == 0) 311 return 1; 312 if(!(ttmp = ASN1_TYPE_new())) goto err; 313 if ((len == -1) && !(attrtype & MBSTRING_FLAG)) 314 { 315 if (!ASN1_TYPE_set1(ttmp, attrtype, data)) 316 goto err; 317 } 318 else 319 ASN1_TYPE_set(ttmp, atype, stmp); 320 if(!sk_ASN1_TYPE_push(attr->value.set, ttmp)) goto err; 321 return 1; 322 err: 323 X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_MALLOC_FAILURE); 324 return 0; 325 } 326 327 int X509_ATTRIBUTE_count(X509_ATTRIBUTE *attr) 328 { 329 if(!attr->single) return sk_ASN1_TYPE_num(attr->value.set); 330 if(attr->value.single) return 1; 331 return 0; 332 } 333 334 ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr) 335 { 336 if (attr == NULL) return(NULL); 337 return(attr->object); 338 } 339 340 void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx, 341 int atrtype, void *data) 342 { 343 ASN1_TYPE *ttmp; 344 ttmp = X509_ATTRIBUTE_get0_type(attr, idx); 345 if(!ttmp) return NULL; 346 if(atrtype != ASN1_TYPE_get(ttmp)){ 347 X509err(X509_F_X509_ATTRIBUTE_GET0_DATA, X509_R_WRONG_TYPE); 348 return NULL; 349 } 350 return ttmp->value.ptr; 351 } 352 353 ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx) 354 { 355 if (attr == NULL) return(NULL); 356 if(idx >= X509_ATTRIBUTE_count(attr)) return NULL; 357 if(!attr->single) return sk_ASN1_TYPE_value(attr->value.set, idx); 358 else return attr->value.single; 359 } 360
