1/*	$NetBSD: copy_host_realm.c,v 1.2 2017/01/28 21:31:49 christos Exp $	*/
2
3/*
4 * Copyright (c) 1999 - 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 * 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
51KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
52krb5_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	return krb5_enomem(context);
65
66    for (i = 0, p = from; *p != NULL; ++p, ++i) {
67	(*to)[i] = strdup(*p);
68	if ((*to)[i] == NULL) {
69	    krb5_free_host_realm (context, *to);
70	    return krb5_enomem(context);
71	}
72    }
73    return 0;
74}
75