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 #include <openssl/asn1.h> 59 #include <openssl/err.h> 60 #include <openssl/evp.h> 61 #include <openssl/obj.h> 62 #include <openssl/stack.h> 63 #include <openssl/x509.h> 64 65 66 int X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x) 67 { 68 return sk_X509_ATTRIBUTE_num(x); 69 } 70 71 int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid, 72 int lastpos) 73 { 74 const ASN1_OBJECT *obj; 75 76 obj=OBJ_nid2obj(nid); 77 if (obj == NULL) return(-2); 78 return(X509at_get_attr_by_OBJ(x,obj,lastpos)); 79 } 80 81 int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk, const ASN1_OBJECT *obj, 82 int lastpos) 83 { 84 int n; 85 X509_ATTRIBUTE *ex; 86 87 if (sk == NULL) return(-1); 88 lastpos++; 89 if (lastpos < 0) 90 lastpos=0; 91 n=sk_X509_ATTRIBUTE_num(sk); 92 for ( ; lastpos < n; lastpos++) 93 { 94 ex=sk_X509_ATTRIBUTE_value(sk,lastpos); 95 if (OBJ_cmp(ex->object,obj) == 0) 96 return(lastpos); 97 } 98 return(-1); 99 } 100 101 X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc) 102 { 103 if (x == NULL || loc < 0 || sk_X509_ATTRIBUTE_num(x) <= (size_t) loc) 104 return NULL; 105 else 106 return sk_X509_ATTRIBUTE_value(x,loc); 107 } 108 109 X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc) 110 { 111 X509_ATTRIBUTE *ret; 112 113 if (x == NULL || loc < 0 || sk_X509_ATTRIBUTE_num(x) <= (size_t) loc) 114 return(NULL); 115 ret=sk_X509_ATTRIBUTE_delete(x,loc); 116 return(ret); 117 } 118 119 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x, 120 X509_ATTRIBUTE *attr) 121 { 122 X509_ATTRIBUTE *new_attr=NULL; 123 STACK_OF(X509_ATTRIBUTE) *sk=NULL; 124 125 if (x == NULL) 126 { 127 OPENSSL_PUT_ERROR(X509, ERR_R_PASSED_NULL_PARAMETER); 128 goto err2; 129 } 130 131 if (*x == NULL) 132 { 133 if ((sk=sk_X509_ATTRIBUTE_new_null()) == NULL) 134 goto err; 135 } 136 else 137 sk= *x; 138 139 if ((new_attr=X509_ATTRIBUTE_dup(attr)) == NULL) 140 goto err2; 141 if (!sk_X509_ATTRIBUTE_push(sk,new_attr)) 142 goto err; 143 if (*x == NULL) 144 *x=sk; 145 return(sk); 146 err: 147 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE); 148 err2: 149 if (new_attr != NULL) X509_ATTRIBUTE_free(new_attr); 150 if (sk != NULL) sk_X509_ATTRIBUTE_free(sk); 151 return(NULL); 152 } 153 154 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE) **x, 155 const ASN1_OBJECT *obj, int type, 156 const unsigned char *bytes, int len) 157 { 158 X509_ATTRIBUTE *attr; 159 STACK_OF(X509_ATTRIBUTE) *ret; 160 attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len); 161 if(!attr) return 0; 162 ret = X509at_add1_attr(x, attr); 163 X509_ATTRIBUTE_free(attr); 164 return ret; 165 } 166 167 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE) **x, 168 int nid, int type, 169 const unsigned char *bytes, int len) 170 { 171 X509_ATTRIBUTE *attr; 172 STACK_OF(X509_ATTRIBUTE) *ret; 173 attr = X509_ATTRIBUTE_create_by_NID(NULL, nid, type, bytes, len); 174 if(!attr) return 0; 175 ret = X509at_add1_attr(x, attr); 176 X509_ATTRIBUTE_free(attr); 177 return ret; 178 } 179 180 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE) **x, 181 const char *attrname, int type, 182 const unsigned char *bytes, int len) 183 { 184 X509_ATTRIBUTE *attr; 185 STACK_OF(X509_ATTRIBUTE) *ret; 186 attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len); 187 if(!attr) return 0; 188 ret = X509at_add1_attr(x, attr); 189 X509_ATTRIBUTE_free(attr); 190 return ret; 191 } 192 193 void *X509at_get0_data_by_OBJ(STACK_OF(X509_ATTRIBUTE) *x, 194 ASN1_OBJECT *obj, int lastpos, int type) 195 { 196 int i; 197 X509_ATTRIBUTE *at; 198 i = X509at_get_attr_by_OBJ(x, obj, lastpos); 199 if (i == -1) 200 return NULL; 201 if ((lastpos <= -2) && (X509at_get_attr_by_OBJ(x, obj, i) != -1)) 202 return NULL; 203 at = X509at_get_attr(x, i); 204 if (lastpos <= -3 && (X509_ATTRIBUTE_count(at) != 1)) 205 return NULL; 206 return X509_ATTRIBUTE_get0_data(at, 0, type, NULL); 207 } 208 209 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid, 210 int atrtype, const void *data, int len) 211 { 212 const ASN1_OBJECT *obj; 213 214 obj=OBJ_nid2obj(nid); 215 if (obj == NULL) 216 { 217 OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_NID); 218 return(NULL); 219 } 220 return X509_ATTRIBUTE_create_by_OBJ(attr,obj,atrtype,data,len); 221 } 222 223 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr, 224 const ASN1_OBJECT *obj, int atrtype, const void *data, int len) 225 { 226 X509_ATTRIBUTE *ret; 227 228 if ((attr == NULL) || (*attr == NULL)) 229 { 230 if ((ret=X509_ATTRIBUTE_new()) == NULL) 231 { 232 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE); 233 return(NULL); 234 } 235 } 236 else 237 ret= *attr; 238 239 if (!X509_ATTRIBUTE_set1_object(ret,obj)) 240 goto err; 241 if (!X509_ATTRIBUTE_set1_data(ret,atrtype,data,len)) 242 goto err; 243 244 if ((attr != NULL) && (*attr == NULL)) *attr=ret; 245 return(ret); 246 err: 247 if ((attr == NULL) || (ret != *attr)) 248 X509_ATTRIBUTE_free(ret); 249 return(NULL); 250 } 251 252 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr, 253 const char *atrname, int type, const unsigned char *bytes, int len) 254 { 255 ASN1_OBJECT *obj; 256 X509_ATTRIBUTE *nattr; 257 258 obj=OBJ_txt2obj(atrname, 0); 259 if (obj == NULL) 260 { 261 OPENSSL_PUT_ERROR(X509, X509_R_INVALID_FIELD_NAME); 262 ERR_add_error_data(2, "name=", atrname); 263 return(NULL); 264 } 265 nattr = X509_ATTRIBUTE_create_by_OBJ(attr,obj,type,bytes,len); 266 ASN1_OBJECT_free(obj); 267 return nattr; 268 } 269 270 int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj) 271 { 272 if ((attr == NULL) || (obj == NULL)) 273 return(0); 274 ASN1_OBJECT_free(attr->object); 275 attr->object=OBJ_dup(obj); 276 return attr->object != NULL; 277 } 278 279 int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype, const void *data, int len) 280 { 281 ASN1_TYPE *ttmp; 282 ASN1_STRING *stmp = NULL; 283 int atype = 0; 284 if (!attr) return 0; 285 if(attrtype & MBSTRING_FLAG) { 286 stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype, 287 OBJ_obj2nid(attr->object)); 288 if(!stmp) { 289 OPENSSL_PUT_ERROR(X509, ERR_R_ASN1_LIB); 290 return 0; 291 } 292 atype = stmp->type; 293 } else if (len != -1){ 294 if(!(stmp = ASN1_STRING_type_new(attrtype))) goto err; 295 if(!ASN1_STRING_set(stmp, data, len)) goto err; 296 atype = attrtype; 297 } 298 if(!(attr->value.set = sk_ASN1_TYPE_new_null())) goto err; 299 attr->single = 0; 300 /* This is a bit naughty because the attribute should really have 301 * at least one value but some types use and zero length SET and 302 * require this. 303 */ 304 if (attrtype == 0) 305 return 1; 306 if(!(ttmp = ASN1_TYPE_new())) goto err; 307 if ((len == -1) && !(attrtype & MBSTRING_FLAG)) 308 { 309 if (!ASN1_TYPE_set1(ttmp, attrtype, data)) 310 goto err; 311 } 312 else 313 ASN1_TYPE_set(ttmp, atype, stmp); 314 if(!sk_ASN1_TYPE_push(attr->value.set, ttmp)) goto err; 315 return 1; 316 err: 317 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE); 318 return 0; 319 } 320 321 int X509_ATTRIBUTE_count(X509_ATTRIBUTE *attr) 322 { 323 if(!attr->single) return sk_ASN1_TYPE_num(attr->value.set); 324 if(attr->value.single) return 1; 325 return 0; 326 } 327 328 ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr) 329 { 330 if (attr == NULL) return(NULL); 331 return(attr->object); 332 } 333 334 void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx, 335 int atrtype, void *data) 336 { 337 ASN1_TYPE *ttmp; 338 ttmp = X509_ATTRIBUTE_get0_type(attr, idx); 339 if(!ttmp) return NULL; 340 if(atrtype != ASN1_TYPE_get(ttmp)){ 341 OPENSSL_PUT_ERROR(X509, X509_R_WRONG_TYPE); 342 return NULL; 343 } 344 return ttmp->value.ptr; 345 } 346 347 ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx) 348 { 349 if (attr == NULL) return(NULL); 350 if(idx >= X509_ATTRIBUTE_count(attr)) return NULL; 351 if(!attr->single) return sk_ASN1_TYPE_value(attr->value.set, idx); 352 else return attr->value.single; 353 } 354
