Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame^] | 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 | #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, X509at_add1_attr, 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, X509at_add1_attr, 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_ATTRIBUTE_create_by_NID, 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, X509_ATTRIBUTE_create_by_OBJ, 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_ATTRIBUTE_create_by_txt, 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(1); |
| 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, X509_ATTRIBUTE_set1_data, 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, X509_ATTRIBUTE_set1_data, 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_ATTRIBUTE_get0_data, 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 | } |