release/src/router/openssl/crypto/x509/x509_att.c

   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         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 }