1/* $NetBSD: set_default_realm.c,v 1.2 2017/01/28 21:31:49 christos Exp $ */ 2 3/* 4 * Copyright (c) 1997 - 2001 Kungliga Tekniska H��gskolan 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 43static krb5_error_code 44string_to_list (krb5_context context, const char *s, krb5_realm **list) 45{ 46 47 *list = malloc (2 * sizeof(**list)); 48 if (*list == NULL) 49 return krb5_enomem(context); 50 (*list)[0] = strdup (s); 51 if ((*list)[0] == NULL) { 52 free (*list); 53 return krb5_enomem(context); 54 } 55 (*list)[1] = NULL; 56 return 0; 57} 58 59/* 60 * Set the knowledge of the default realm(s) in `context'. 61 * If realm != NULL, that's the new default realm. 62 * Otherwise, the realm(s) are figured out from configuration or DNS. 63 */ 64 65KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL 66krb5_set_default_realm(krb5_context context, 67 const char *realm) 68{ 69 krb5_error_code ret = 0; 70 krb5_realm *realms = NULL; 71 72 if (realm == NULL) { 73 realms = krb5_config_get_strings (context, NULL, 74 "libdefaults", 75 "default_realm", 76 NULL); 77 if (realms == NULL) 78 ret = krb5_get_host_realm(context, NULL, &realms); 79 } else { 80 ret = string_to_list (context, realm, &realms); 81 } 82 if (ret) 83 return ret; 84 krb5_free_host_realm (context, context->default_realms); 85 context->default_realms = realms; 86 return 0; 87} 88