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         if (!x) return 0;
  71         return(sk_X509_ATTRIBUTE_num(x));
  72 }
  73
  74 int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid,
  75                           int lastpos)
  76 {
  77         ASN1_OBJECT *obj;
  78
  79         obj=OBJ_nid2obj(nid);
  80         if (obj == NULL) return(-2);
  81         return(X509at_get_attr_by_OBJ(x,obj,lastpos));
  82 }
  83
  84 int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk, ASN1_OBJECT *obj,
  85                           int lastpos)
  86 {
  87         int n;
  88         X509_ATTRIBUTE *ex;
  89
  90         if (sk == NULL) return(-1);
  91         lastpos++;
  92         if (lastpos < 0)
  93                 lastpos=0;
  94         n=sk_X509_ATTRIBUTE_num(sk);
  95         for ( ; lastpos < n; lastpos++)
  96                 {
  97                 ex=sk_X509_ATTRIBUTE_value(sk,lastpos);
  98                 if (OBJ_cmp(ex->object,obj) == 0)
  99                         return(lastpos);
 100                 }
 101         return(-1);
 102 }
 103
 104 X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc)
 105 {
 106         if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)
 107                 return NULL;
 108         else
 109                 return sk_X509_ATTRIBUTE_value(x,loc);
 110 }
 111
 112 X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc)
 113 {
 114         X509_ATTRIBUTE *ret;
 115
 116         if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)
 117                 return(NULL);
 118         ret=sk_X509_ATTRIBUTE_delete(x,loc);
 119         return(ret);
 120 }
 121
 122 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x,
 123                                          X509_ATTRIBUTE *attr)
 124 {
 125         X509_ATTRIBUTE *new_attr=NULL;
 126         STACK_OF(X509_ATTRIBUTE) *sk=NULL;
 127
 128         if (x == NULL)
 129                 {
 130                 X509err(X509_F_X509AT_ADD1_ATTR, ERR_R_PASSED_NULL_PARAMETER);
 131                 goto err2;
 132                 }
 133
 134         if (*x == NULL)
 135                 {
 136                 if ((sk=sk_X509_ATTRIBUTE_new_null()) == NULL)
 137                         goto err;
 138                 }
 139         else
 140                 sk= *x;
 141
 142         if ((new_attr=X509_ATTRIBUTE_dup(attr)) == NULL)
 143                 goto err2;
 144         if (!sk_X509_ATTRIBUTE_push(sk,new_attr))
 145                 goto err;
 146         if (*x == NULL)
 147                 *x=sk;
 148         return(sk);
 149 err:
 150         X509err(X509_F_X509AT_ADD1_ATTR,ERR_R_MALLOC_FAILURE);
 151 err2:
 152         if (new_attr != NULL) X509_ATTRIBUTE_free(new_attr);
 153         if (sk != NULL) sk_X509_ATTRIBUTE_free(sk);
 154         return(NULL);
 155 }
 156
 157 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE) **x,
 158                         const ASN1_OBJECT *obj, int type,
 159                         const unsigned char *bytes, int len)
 160 {
 161         X509_ATTRIBUTE *attr;
 162         STACK_OF(X509_ATTRIBUTE) *ret;
 163         attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len);
 164         if(!attr) return 0;
 165         ret = X509at_add1_attr(x, attr);
 166         X509_ATTRIBUTE_free(attr);
 167         return ret;
 168 }
 169
 170 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE) **x,
 171                         int nid, int type,
 172                         const unsigned char *bytes, 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) return 0;
 178         ret = X509at_add1_attr(x, attr);
 179         X509_ATTRIBUTE_free(attr);
 180         return ret;
 181 }
 182
 183 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE) **x,
 184                         const char *attrname, int type,
 185                         const unsigned char *bytes, int len)
 186 {
 187         X509_ATTRIBUTE *attr;
 188         STACK_OF(X509_ATTRIBUTE) *ret;
 189         attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len);
 190         if(!attr) return 0;
 191         ret = X509at_add1_attr(x, attr);
 192         X509_ATTRIBUTE_free(attr);
 193         return ret;
 194 }
 195
 196 void *X509at_get0_data_by_OBJ(STACK_OF(X509_ATTRIBUTE) *x,
 197                                 ASN1_OBJECT *obj, int lastpos, int type)
 198 {
 199         int i;
 200         X509_ATTRIBUTE *at;
 201         i = X509at_get_attr_by_OBJ(x, obj, lastpos);
 202         if (i == -1)
 203                 return NULL;
 204         if ((lastpos <= -2) && (X509at_get_attr_by_OBJ(x, obj, i) != -1))
 205                 return NULL;
 206         at = X509at_get_attr(x, i);
 207         if (lastpos <= -3 && (X509_ATTRIBUTE_count(at) != 1))
 208                 return NULL;
 209         return X509_ATTRIBUTE_get0_data(at, 0, type, NULL);
 210 }
 211
 212 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,
 213              int atrtype, const void *data, int len)
 214 {
 215         ASN1_OBJECT *obj;
 216         X509_ATTRIBUTE *ret;
 217
 218         obj=OBJ_nid2obj(nid);
 219         if (obj == NULL)
 220                 {
 221                 X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_NID,X509_R_UNKNOWN_NID);
 222                 return(NULL);
 223                 }
 224         ret=X509_ATTRIBUTE_create_by_OBJ(attr,obj,atrtype,data,len);
 225         if (ret == NULL) ASN1_OBJECT_free(obj);
 226         return(ret);
 227 }
 228
 229 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr,
 230              const ASN1_OBJECT *obj, int atrtype, const void *data, int len)
 231 {
 232         X509_ATTRIBUTE *ret;
 233
 234         if ((attr == NULL) || (*attr == NULL))
 235                 {
 236                 if ((ret=X509_ATTRIBUTE_new()) == NULL)
 237                         {
 238                         X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_OBJ,ERR_R_MALLOC_FAILURE);
 239                         return(NULL);
 240                         }
 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)) *attr=ret;
 251         return(ret);
 252 err:
 253         if ((attr == NULL) || (ret != *attr))
 254                 X509_ATTRIBUTE_free(ret);
 255         return(NULL);
 256 }
 257
 258 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr,
 259                 const char *atrname, int type, const unsigned char *bytes, int len)
 260         {
 261         ASN1_OBJECT *obj;
 262         X509_ATTRIBUTE *nattr;
 263
 264         obj=OBJ_txt2obj(atrname, 0);
 265         if (obj == NULL)
 266                 {
 267                 X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_TXT,
 268                                                 X509_R_INVALID_FIELD_NAME);
 269                 ERR_add_error_data(2, "name=", atrname);
 270                 return(NULL);
 271                 }
 272         nattr = X509_ATTRIBUTE_create_by_OBJ(attr,obj,type,bytes,len);
 273         ASN1_OBJECT_free(obj);
 274         return nattr;
 275         }
 276
 277 int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj)
 278 {
 279         if ((attr == NULL) || (obj == NULL))
 280                 return(0);
 281         ASN1_OBJECT_free(attr->object);
 282         attr->object=OBJ_dup(obj);
 283         return(1);
 284 }
 285
 286 int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype, const void *data, int len)
 287 {
 288         ASN1_TYPE *ttmp;
 289         ASN1_STRING *stmp;
 290         int atype;
 291         if (!attr) return 0;
 292         if(attrtype & MBSTRING_FLAG) {
 293                 stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype,
 294                                                 OBJ_obj2nid(attr->object));
 295                 if(!stmp) {
 296                         X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_ASN1_LIB);
 297                         return 0;
 298                 }
 299                 atype = stmp->type;
 300         } else if (len != -1){
 301                 if(!(stmp = ASN1_STRING_type_new(attrtype))) goto err;
 302                 if(!ASN1_STRING_set(stmp, data, len)) goto err;
 303                 atype = attrtype;
 304         }
 305         if(!(attr->value.set = sk_ASN1_TYPE_new_null())) goto err;
 306         if(!(ttmp = ASN1_TYPE_new())) goto err;
 307         if (len == -1)
 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         attr->single = 0;
 316         return 1;
 317         err:
 318         X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_MALLOC_FAILURE);
 319         return 0;
 320 }
 321
 322 int X509_ATTRIBUTE_count(X509_ATTRIBUTE *attr)
 323 {
 324         if(!attr->single) return sk_ASN1_TYPE_num(attr->value.set);
 325         if(attr->value.single) return 1;
 326         return 0;
 327 }
 328
 329 ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr)
 330 {
 331         if (attr == NULL) return(NULL);
 332         return(attr->object);
 333 }
 334
 335 void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx,
 336                                         int atrtype, void *data)
 337 {
 338         ASN1_TYPE *ttmp;
 339         ttmp = X509_ATTRIBUTE_get0_type(attr, idx);
 340         if(!ttmp) return NULL;
 341         if(atrtype != ASN1_TYPE_get(ttmp)){
 342                 X509err(X509_F_X509_ATTRIBUTE_GET0_DATA, X509_R_WRONG_TYPE);
 343                 return NULL;
 344         }
 345         return ttmp->value.ptr;
 346 }
 347
 348 ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx)
 349 {
 350         if (attr == NULL) return(NULL);
 351         if(idx >= X509_ATTRIBUTE_count(attr)) return NULL;
 352         if(!attr->single) return sk_ASN1_TYPE_value(attr->value.set, idx);
 353         else return attr->value.single;
 354 }