crypto/x509/x509name.c

   1 /* crypto/x509/x509name.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 "internal/cryptlib.h"
  62 #include <openssl/asn1.h>
  63 #include <openssl/objects.h>
  64 #include <openssl/evp.h>
  65 #include <openssl/x509.h>
  66 #include "internal/x509_int.h"
  67
  68 int X509_NAME_get_text_by_NID(X509_NAME *name, int nid, char *buf, int len)
  69 {
  70     ASN1_OBJECT *obj;
  71
  72     obj = OBJ_nid2obj(nid);
  73     if (obj == NULL)
  74         return (-1);
  75     return (X509_NAME_get_text_by_OBJ(name, obj, buf, len));
  76 }
  77
  78 int X509_NAME_get_text_by_OBJ(X509_NAME *name, ASN1_OBJECT *obj, char *buf,
  79                               int len)
  80 {
  81     int i;
  82     ASN1_STRING *data;
  83
  84     i = X509_NAME_get_index_by_OBJ(name, obj, -1);
  85     if (i < 0)
  86         return (-1);
  87     data = X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name, i));
  88     i = (data->length > (len - 1)) ? (len - 1) : data->length;
  89     if (buf == NULL)
  90         return (data->length);
  91     memcpy(buf, data->data, i);
  92     buf[i] = '\0';
  93     return (i);
  94 }
  95
  96 int X509_NAME_entry_count(X509_NAME *name)
  97 {
  98     if (name == NULL)
  99         return (0);
 100     return (sk_X509_NAME_ENTRY_num(name->entries));
 101 }
 102
 103 int X509_NAME_get_index_by_NID(X509_NAME *name, int nid, int lastpos)
 104 {
 105     ASN1_OBJECT *obj;
 106
 107     obj = OBJ_nid2obj(nid);
 108     if (obj == NULL)
 109         return (-2);
 110     return (X509_NAME_get_index_by_OBJ(name, obj, lastpos));
 111 }
 112
 113 /* NOTE: you should be passsing -1, not 0 as lastpos */
 114 int X509_NAME_get_index_by_OBJ(X509_NAME *name, ASN1_OBJECT *obj, int lastpos)
 115 {
 116     int n;
 117     X509_NAME_ENTRY *ne;
 118     STACK_OF(X509_NAME_ENTRY) *sk;
 119
 120     if (name == NULL)
 121         return (-1);
 122     if (lastpos < 0)
 123         lastpos = -1;
 124     sk = name->entries;
 125     n = sk_X509_NAME_ENTRY_num(sk);
 126     for (lastpos++; lastpos < n; lastpos++) {
 127         ne = sk_X509_NAME_ENTRY_value(sk, lastpos);
 128         if (OBJ_cmp(ne->object, obj) == 0)
 129             return (lastpos);
 130     }
 131     return (-1);
 132 }
 133
 134 X509_NAME_ENTRY *X509_NAME_get_entry(X509_NAME *name, int loc)
 135 {
 136     if (name == NULL || sk_X509_NAME_ENTRY_num(name->entries) <= loc
 137         || loc < 0)
 138         return (NULL);
 139     else
 140         return (sk_X509_NAME_ENTRY_value(name->entries, loc));
 141 }
 142
 143 X509_NAME_ENTRY *X509_NAME_delete_entry(X509_NAME *name, int loc)
 144 {
 145     X509_NAME_ENTRY *ret;
 146     int i, n, set_prev, set_next;
 147     STACK_OF(X509_NAME_ENTRY) *sk;
 148
 149     if (name == NULL || sk_X509_NAME_ENTRY_num(name->entries) <= loc
 150         || loc < 0)
 151         return (NULL);
 152     sk = name->entries;
 153     ret = sk_X509_NAME_ENTRY_delete(sk, loc);
 154     n = sk_X509_NAME_ENTRY_num(sk);
 155     name->modified = 1;
 156     if (loc == n)
 157         return (ret);
 158
 159     /* else we need to fixup the set field */
 160     if (loc != 0)
 161         set_prev = (sk_X509_NAME_ENTRY_value(sk, loc - 1))->set;
 162     else
 163         set_prev = ret->set - 1;
 164     set_next = sk_X509_NAME_ENTRY_value(sk, loc)->set;
 165
 166     /*-
 167      * set_prev is the previous set
 168      * set is the current set
 169      * set_next is the following
 170      * prev  1 1    1 1     1 1     1 1
 171      * set   1      1       2       2
 172      * next  1 1    2 2     2 2     3 2
 173      * so basically only if prev and next differ by 2, then
 174      * re-number down by 1
 175      */
 176     if (set_prev + 1 < set_next)
 177         for (i = loc; i < n; i++)
 178             sk_X509_NAME_ENTRY_value(sk, i)->set--;
 179     return (ret);
 180 }
 181
 182 int X509_NAME_add_entry_by_OBJ(X509_NAME *name, ASN1_OBJECT *obj, int type,
 183                                unsigned char *bytes, int len, int loc,
 184                                int set)
 185 {
 186     X509_NAME_ENTRY *ne;
 187     int ret;
 188     ne = X509_NAME_ENTRY_create_by_OBJ(NULL, obj, type, bytes, len);
 189     if (!ne)
 190         return 0;
 191     ret = X509_NAME_add_entry(name, ne, loc, set);
 192     X509_NAME_ENTRY_free(ne);
 193     return ret;
 194 }
 195
 196 int X509_NAME_add_entry_by_NID(X509_NAME *name, int nid, int type,
 197                                unsigned char *bytes, int len, int loc,
 198                                int set)
 199 {
 200     X509_NAME_ENTRY *ne;
 201     int ret;
 202     ne = X509_NAME_ENTRY_create_by_NID(NULL, nid, type, bytes, len);
 203     if (!ne)
 204         return 0;
 205     ret = X509_NAME_add_entry(name, ne, loc, set);
 206     X509_NAME_ENTRY_free(ne);
 207     return ret;
 208 }
 209
 210 int X509_NAME_add_entry_by_txt(X509_NAME *name, const char *field, int type,
 211                                const unsigned char *bytes, int len, int loc,
 212                                int set)
 213 {
 214     X509_NAME_ENTRY *ne;
 215     int ret;
 216     ne = X509_NAME_ENTRY_create_by_txt(NULL, field, type, bytes, len);
 217     if (!ne)
 218         return 0;
 219     ret = X509_NAME_add_entry(name, ne, loc, set);
 220     X509_NAME_ENTRY_free(ne);
 221     return ret;
 222 }
 223
 224 /*
 225  * if set is -1, append to previous set, 0 'a new one', and 1, prepend to the
 226  * guy we are about to stomp on.
 227  */
 228 int X509_NAME_add_entry(X509_NAME *name, X509_NAME_ENTRY *ne, int loc,
 229                         int set)
 230 {
 231     X509_NAME_ENTRY *new_name = NULL;
 232     int n, i, inc;
 233     STACK_OF(X509_NAME_ENTRY) *sk;
 234
 235     if (name == NULL)
 236         return (0);
 237     sk = name->entries;
 238     n = sk_X509_NAME_ENTRY_num(sk);
 239     if (loc > n)
 240         loc = n;
 241     else if (loc < 0)
 242         loc = n;
 243
 244     name->modified = 1;
 245
 246     if (set == -1) {
 247         if (loc == 0) {
 248             set = 0;
 249             inc = 1;
 250         } else {
 251             set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set;
 252             inc = 0;
 253         }
 254     } else {                    /* if (set >= 0) */
 255
 256         if (loc >= n) {
 257             if (loc != 0)
 258                 set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set + 1;
 259             else
 260                 set = 0;
 261         } else
 262             set = sk_X509_NAME_ENTRY_value(sk, loc)->set;
 263         inc = (set == 0) ? 1 : 0;
 264     }
 265
 266     if ((new_name = X509_NAME_ENTRY_dup(ne)) == NULL)
 267         goto err;
 268     new_name->set = set;
 269     if (!sk_X509_NAME_ENTRY_insert(sk, new_name, loc)) {
 270         X509err(X509_F_X509_NAME_ADD_ENTRY, ERR_R_MALLOC_FAILURE);
 271         goto err;
 272     }
 273     if (inc) {
 274         n = sk_X509_NAME_ENTRY_num(sk);
 275         for (i = loc + 1; i < n; i++)
 276             sk_X509_NAME_ENTRY_value(sk, i - 1)->set += 1;
 277     }
 278     return (1);
 279  err:
 280     X509_NAME_ENTRY_free(new_name);
 281     return (0);
 282 }
 283
 284 X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY **ne,
 285                                                const char *field, int type,
 286                                                const unsigned char *bytes,
 287                                                int len)
 288 {
 289     ASN1_OBJECT *obj;
 290     X509_NAME_ENTRY *nentry;
 291
 292     obj = OBJ_txt2obj(field, 0);
 293     if (obj == NULL) {
 294         X509err(X509_F_X509_NAME_ENTRY_CREATE_BY_TXT,
 295                 X509_R_INVALID_FIELD_NAME);
 296         ERR_add_error_data(2, "name=", field);
 297         return (NULL);
 298     }
 299     nentry = X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
 300     ASN1_OBJECT_free(obj);
 301     return nentry;
 302 }
 303
 304 X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY **ne, int nid,
 305                                                int type, unsigned char *bytes,
 306                                                int len)
 307 {
 308     ASN1_OBJECT *obj;
 309     X509_NAME_ENTRY *nentry;
 310
 311     obj = OBJ_nid2obj(nid);
 312     if (obj == NULL) {
 313         X509err(X509_F_X509_NAME_ENTRY_CREATE_BY_NID, X509_R_UNKNOWN_NID);
 314         return (NULL);
 315     }
 316     nentry = X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
 317     ASN1_OBJECT_free(obj);
 318     return nentry;
 319 }
 320
 321 X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY **ne,
 322                                                ASN1_OBJECT *obj, int type,
 323                                                const unsigned char *bytes,
 324                                                int len)
 325 {
 326     X509_NAME_ENTRY *ret;
 327
 328     if ((ne == NULL) || (*ne == NULL)) {
 329         if ((ret = X509_NAME_ENTRY_new()) == NULL)
 330             return (NULL);
 331     } else
 332         ret = *ne;
 333
 334     if (!X509_NAME_ENTRY_set_object(ret, obj))
 335         goto err;
 336     if (!X509_NAME_ENTRY_set_data(ret, type, bytes, len))
 337         goto err;
 338
 339     if ((ne != NULL) && (*ne == NULL))
 340         *ne = ret;
 341     return (ret);
 342  err:
 343     if ((ne == NULL) || (ret != *ne))
 344         X509_NAME_ENTRY_free(ret);
 345     return (NULL);
 346 }
 347
 348 int X509_NAME_ENTRY_set_object(X509_NAME_ENTRY *ne, ASN1_OBJECT *obj)
 349 {
 350     if ((ne == NULL) || (obj == NULL)) {
 351         X509err(X509_F_X509_NAME_ENTRY_SET_OBJECT,
 352                 ERR_R_PASSED_NULL_PARAMETER);
 353         return (0);
 354     }
 355     ASN1_OBJECT_free(ne->object);
 356     ne->object = OBJ_dup(obj);
 357     return ((ne->object == NULL) ? 0 : 1);
 358 }
 359
 360 int X509_NAME_ENTRY_set_data(X509_NAME_ENTRY *ne, int type,
 361                              const unsigned char *bytes, int len)
 362 {
 363     int i;
 364
 365     if ((ne == NULL) || ((bytes == NULL) && (len != 0)))
 366         return (0);
 367     if ((type > 0) && (type & MBSTRING_FLAG))
 368         return ASN1_STRING_set_by_NID(&ne->value, bytes,
 369                                       len, type,
 370                                       OBJ_obj2nid(ne->object)) ? 1 : 0;
 371     if (len < 0)
 372         len = strlen((const char *)bytes);
 373     i = ASN1_STRING_set(ne->value, bytes, len);
 374     if (!i)
 375         return (0);
 376     if (type != V_ASN1_UNDEF) {
 377         if (type == V_ASN1_APP_CHOOSE)
 378             ne->value->type = ASN1_PRINTABLE_type(bytes, len);
 379         else
 380             ne->value->type = type;
 381     }
 382     return (1);
 383 }
 384
 385 ASN1_OBJECT *X509_NAME_ENTRY_get_object(X509_NAME_ENTRY *ne)
 386 {
 387     if (ne == NULL)
 388         return (NULL);
 389     return (ne->object);
 390 }
 391
 392 ASN1_STRING *X509_NAME_ENTRY_get_data(X509_NAME_ENTRY *ne)
 393 {
 394     if (ne == NULL)
 395         return (NULL);
 396     return (ne->value);
 397 }
 398
 399 int X509_NAME_ENTRY_set(const X509_NAME_ENTRY *ne)
 400 {
 401     return ne->set;
 402 }