Line data    Source code

       1             : /*
       2             :  * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
       3             :  * (Royal Institute of Technology, Stockholm, Sweden).
       4             :  * All rights reserved.
       5             :  *
       6             :  * Redistribution and use in source and binary forms, with or without
       7             :  * modification, are permitted provided that the following conditions
       8             :  * are met:
       9             :  *
      10             :  * 1. Redistributions of source code must retain the above copyright
      11             :  *    notice, this list of conditions and the following disclaimer.
      12             :  *
      13             :  * 2. Redistributions in binary form must reproduce the above copyright
      14             :  *    notice, this list of conditions and the following disclaimer in the
      15             :  *    documentation and/or other materials provided with the distribution.
      16             :  *
      17             :  * 3. Neither the name of the Institute nor the names of its contributors
      18             :  *    may be used to endorse or promote products derived from this software
      19             :  *    without specific prior written permission.
      20             :  *
      21             :  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
      22             :  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
      23             :  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
      24             :  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
      25             :  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
      26             :  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
      27             :  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
      28             :  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
      29             :  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
      30             :  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
      31             :  * SUCH DAMAGE.
      32             :  */
      33             : 
      34             : #include "krb5_locl.h"
      35             : 
      36             : /*
      37             :  * Convert the simple string `s' into a NULL-terminated and freshly allocated
      38             :  * list in `list'.  Return an error code.
      39             :  */
      40             : 
      41             : static krb5_error_code
      42      643291 : string_to_list (krb5_context context, const char *s, krb5_realm **list)
      43             : {
      44             : 
      45      643291 :     *list = malloc (2 * sizeof(**list));
      46      643291 :     if (*list == NULL)
      47           0 :         return krb5_enomem(context);
      48      643291 :     (*list)[0] = strdup (s);
      49      643291 :     if ((*list)[0] == NULL) {
      50           0 :         free (*list);
      51           0 :         return krb5_enomem(context);
      52             :     }
      53      643291 :     (*list)[1] = NULL;
      54      643291 :     return 0;
      55             : }
      56             : 
      57             : /*
      58             :  * Set the knowledge of the default realm(s) in `context'.
      59             :  * If realm != NULL, that's the new default realm.
      60             :  * Otherwise, the realm(s) are figured out from configuration or DNS.
      61             :  */
      62             : 
      63             : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
      64      663491 : krb5_set_default_realm(krb5_context context,
      65             :                        const char *realm)
      66             : {
      67      663491 :     krb5_error_code ret = 0;
      68      663491 :     krb5_realm *realms = NULL;
      69             : 
      70      663491 :     if (realm == NULL) {
      71       20200 :         realms = krb5_config_get_strings (context, NULL,
      72             :                                           "libdefaults",
      73             :                                           "default_realm",
      74             :                                           NULL);
      75       20200 :         if (realms == NULL)
      76           0 :             ret = krb5_get_host_realm(context, NULL, &realms);
      77             :     } else {
      78      643291 :         ret = string_to_list (context, realm, &realms);
      79             :     }
      80      662456 :     if (ret)
      81           0 :         return ret;
      82      663491 :     krb5_free_host_realm (context, context->default_realms);
      83      663491 :     context->default_realms = realms;
      84      663491 :     return 0;
      85             : }