1 /* $NetBSD: set_default_realm.c,v 1.1.1.1 2011/04/13 18:15:38 elric Exp $ */ 2 3 /* 4 * Copyright (c) 1997 - 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 * Convert the simple string `s' into a NULL-terminated and freshly allocated 40 * list in `list'. Return an error code. 41 */ 42 43 static krb5_error_code 44 string_to_list (krb5_context context, const char *s, krb5_realm **list) 45 { 46 47 *list = malloc (2 * sizeof(**list)); 48 if (*list == NULL) { 49 krb5_set_error_message(context, ENOMEM, 50 N_("malloc: out of memory", "")); 51 return ENOMEM; 52 } 53 (*list)[0] = strdup (s); 54 if ((*list)[0] == NULL) { 55 free (*list); 56 krb5_set_error_message(context, ENOMEM, 57 N_("malloc: out of memory", "")); 58 return ENOMEM; 59 } 60 (*list)[1] = NULL; 61 return 0; 62 } 63 64 /* 65 * Set the knowledge of the default realm(s) in `context'. 66 * If realm != NULL, that's the new default realm. 67 * Otherwise, the realm(s) are figured out from configuration or DNS. 68 */ 69 70 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL 71 krb5_set_default_realm(krb5_context context, 72 const char *realm) 73 { 74 krb5_error_code ret = 0; 75 krb5_realm *realms = NULL; 76 77 if (realm == NULL) { 78 realms = krb5_config_get_strings (context, NULL, 79 "libdefaults", 80 "default_realm", 81 NULL); 82 if (realms == NULL) 83 ret = krb5_get_host_realm(context, NULL, &realms); 84 } else { 85 ret = string_to_list (context, realm, &realms); 86 } 87 if (ret) 88 return ret; 89 krb5_free_host_realm (context, context->default_realms); 90 context->default_realms = realms; 91 return 0; 92 } 93