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 int X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x) 66 { 67 return sk_X509_ATTRIBUTE_num(x); 68 } 69 70 int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid, 71 int lastpos) 72 { 73 const ASN1_OBJECT *obj; 74 75 obj = OBJ_nid2obj(nid); 76 if (obj == NULL) 77 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, 82 const ASN1_OBJECT *obj, int lastpos) 83 { 84 int n; 85 X509_ATTRIBUTE *ex; 86 87 if (sk == NULL) 88 return (-1); 89 lastpos++; 90 if (lastpos < 0) 91 lastpos = 0; 92 n = sk_X509_ATTRIBUTE_num(sk); 93 for (; lastpos < n; lastpos++) { 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 OPENSSL_PUT_ERROR(X509, ERR_R_PASSED_NULL_PARAMETER); 127 goto err2; 128 } 129 130 if (*x == NULL) { 131 if ((sk = sk_X509_ATTRIBUTE_new_null()) == NULL) 132 goto err; 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) 141 *x = sk; 142 return (sk); 143 err: 144 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE); 145 err2: 146 if (new_attr != NULL) 147 X509_ATTRIBUTE_free(new_attr); 148 if (sk != NULL) 149 sk_X509_ATTRIBUTE_free(sk); 150 return (NULL); 151 } 152 153 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE) 154 **x, const ASN1_OBJECT *obj, 155 int type, 156 const unsigned char *bytes, 157 int len) 158 { 159 X509_ATTRIBUTE *attr; 160 STACK_OF(X509_ATTRIBUTE) *ret; 161 attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len); 162 if (!attr) 163 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) 170 **x, int nid, int type, 171 const unsigned char *bytes, 172 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) 178 return 0; 179 ret = X509at_add1_attr(x, attr); 180 X509_ATTRIBUTE_free(attr); 181 return ret; 182 } 183 184 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE) 185 **x, const char *attrname, 186 int type, 187 const unsigned char *bytes, 188 int len) 189 { 190 X509_ATTRIBUTE *attr; 191 STACK_OF(X509_ATTRIBUTE) *ret; 192 attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len); 193 if (!attr) 194 return 0; 195 ret = X509at_add1_attr(x, attr); 196 X509_ATTRIBUTE_free(attr); 197 return ret; 198 } 199 200 void *X509at_get0_data_by_OBJ(STACK_OF(X509_ATTRIBUTE) *x, 201 ASN1_OBJECT *obj, int lastpos, int type) 202 { 203 int i; 204 X509_ATTRIBUTE *at; 205 i = X509at_get_attr_by_OBJ(x, obj, lastpos); 206 if (i == -1) 207 return NULL; 208 if ((lastpos <= -2) && (X509at_get_attr_by_OBJ(x, obj, i) != -1)) 209 return NULL; 210 at = X509at_get_attr(x, i); 211 if (lastpos <= -3 && (X509_ATTRIBUTE_count(at) != 1)) 212 return NULL; 213 return X509_ATTRIBUTE_get0_data(at, 0, type, NULL); 214 } 215 216 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid, 217 int atrtype, const void *data, 218 int len) 219 { 220 const ASN1_OBJECT *obj; 221 222 obj = OBJ_nid2obj(nid); 223 if (obj == NULL) { 224 OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_NID); 225 return (NULL); 226 } 227 return X509_ATTRIBUTE_create_by_OBJ(attr, obj, atrtype, data, len); 228 } 229 230 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr, 231 const ASN1_OBJECT *obj, 232 int atrtype, const void *data, 233 int len) 234 { 235 X509_ATTRIBUTE *ret; 236 237 if ((attr == NULL) || (*attr == NULL)) { 238 if ((ret = X509_ATTRIBUTE_new()) == NULL) { 239 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE); 240 return (NULL); 241 } 242 } else 243 ret = *attr; 244 245 if (!X509_ATTRIBUTE_set1_object(ret, obj)) 246 goto err; 247 if (!X509_ATTRIBUTE_set1_data(ret, atrtype, data, len)) 248 goto err; 249 250 if ((attr != NULL) && (*attr == NULL)) 251 *attr = ret; 252 return (ret); 253 err: 254 if ((attr == NULL) || (ret != *attr)) 255 X509_ATTRIBUTE_free(ret); 256 return (NULL); 257 } 258 259 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr, 260 const char *atrname, int type, 261 const unsigned char *bytes, 262 int len) 263 { 264 ASN1_OBJECT *obj; 265 X509_ATTRIBUTE *nattr; 266 267 obj = OBJ_txt2obj(atrname, 0); 268 if (obj == NULL) { 269 OPENSSL_PUT_ERROR(X509, X509_R_INVALID_FIELD_NAME); 270 ERR_add_error_data(2, "name=", atrname); 271 return (NULL); 272 } 273 nattr = X509_ATTRIBUTE_create_by_OBJ(attr, obj, type, bytes, len); 274 ASN1_OBJECT_free(obj); 275 return nattr; 276 } 277 278 int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj) 279 { 280 if ((attr == NULL) || (obj == NULL)) 281 return (0); 282 ASN1_OBJECT_free(attr->object); 283 attr->object = OBJ_dup(obj); 284 return attr->object != NULL; 285 } 286 287 int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype, 288 const void *data, int len) 289 { 290 ASN1_TYPE *ttmp = NULL; 291 ASN1_STRING *stmp = NULL; 292 int atype = 0; 293 if (!attr) 294 return 0; 295 if (attrtype & MBSTRING_FLAG) { 296 stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype, 297 OBJ_obj2nid(attr->object)); 298 if (!stmp) { 299 OPENSSL_PUT_ERROR(X509, ERR_R_ASN1_LIB); 300 return 0; 301 } 302 atype = stmp->type; 303 } else if (len != -1) { 304 if (!(stmp = ASN1_STRING_type_new(attrtype))) 305 goto err; 306 if (!ASN1_STRING_set(stmp, data, len)) 307 goto err; 308 atype = attrtype; 309 } 310 if (!(attr->value.set = sk_ASN1_TYPE_new_null())) 311 goto err; 312 attr->single = 0; 313 /* 314 * This is a bit naughty because the attribute should really have at 315 * least one value but some types use and zero length SET and require 316 * this. 317 */ 318 if (attrtype == 0) { 319 ASN1_STRING_free(stmp); 320 return 1; 321 } 322 if (!(ttmp = ASN1_TYPE_new())) 323 goto err; 324 if ((len == -1) && !(attrtype & MBSTRING_FLAG)) { 325 if (!ASN1_TYPE_set1(ttmp, attrtype, data)) 326 goto err; 327 } else { 328 ASN1_TYPE_set(ttmp, atype, stmp); 329 stmp = NULL; 330 } 331 if (!sk_ASN1_TYPE_push(attr->value.set, ttmp)) 332 goto err; 333 return 1; 334 err: 335 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE); 336 ASN1_TYPE_free(ttmp); 337 ASN1_STRING_free(stmp); 338 return 0; 339 } 340 341 int X509_ATTRIBUTE_count(X509_ATTRIBUTE *attr) 342 { 343 if (!attr->single) 344 return sk_ASN1_TYPE_num(attr->value.set); 345 if (attr->value.single) 346 return 1; 347 return 0; 348 } 349 350 ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr) 351 { 352 if (attr == NULL) 353 return (NULL); 354 return (attr->object); 355 } 356 357 void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx, 358 int atrtype, void *data) 359 { 360 ASN1_TYPE *ttmp; 361 ttmp = X509_ATTRIBUTE_get0_type(attr, idx); 362 if (!ttmp) 363 return NULL; 364 if (atrtype != ASN1_TYPE_get(ttmp)) { 365 OPENSSL_PUT_ERROR(X509, X509_R_WRONG_TYPE); 366 return NULL; 367 } 368 return ttmp->value.ptr; 369 } 370 371 ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx) 372 { 373 if (attr == NULL) 374 return (NULL); 375 if (idx >= X509_ATTRIBUTE_count(attr)) 376 return NULL; 377 if (!attr->single) 378 return sk_ASN1_TYPE_value(attr->value.set, idx); 379 else 380 return attr->value.single; 381 } 382
