crypto/external/bsd/heimdal/dist/lib/krb5/copy_host_realm.c

   1 /*      $NetBSD: copy_host_realm.c,v 1.1.1.1 2011/04/13 18:15:32 elric Exp $    */
   2
   3 /*
   4  * Copyright (c) 1999 - 2001 Kungliga Tekniska Högskolan
   5  * (Royal Institute of Technology, Stockholm, Sweden).
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * 3. Neither the name of the Institute nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include "krb5_locl.h"
  37
  38 /**
  39  * Copy the list of realms from `from' to `to'.
  40  *
  41  * @param context Kerberos 5 context.
  42  * @param from list of realms to copy from.
  43  * @param to list of realms to copy to, free list of krb5_free_host_realm().
  44  *
  45  * @return Returns 0 to indicate success. Otherwise an kerberos et
  46  * error code is returned, see krb5_get_error_message().
  47  *
  48  * @ingroup krb5
  49  */
  50
  51 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
  52 krb5_copy_host_realm(krb5_context context,
  53                      const krb5_realm *from,
  54                      krb5_realm **to)
  55 {
  56     unsigned int n, i;
  57     const krb5_realm *p;
  58
  59     for (n = 1, p = from; *p != NULL; ++p)
  60         ++n;
  61
  62     *to = calloc (n, sizeof(**to));
  63     if (*to == NULL) {
  64         krb5_set_error_message (context, ENOMEM,
  65                                 N_("malloc: out of memory", ""));
  66         return ENOMEM;
  67     }
  68
  69     for (i = 0, p = from; *p != NULL; ++p, ++i) {
  70         (*to)[i] = strdup(*p);
  71         if ((*to)[i] == NULL) {
  72             krb5_free_host_realm (context, *to);
  73             krb5_set_error_message (context, ENOMEM,
  74                                     N_("malloc: out of memory", ""));
  75             return ENOMEM;
  76         }
  77     }
  78     return 0;
  79 }