1/*
2 * Copyright (c) 1999 - 2001 Kungliga Tekniska H�gskolan
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
36RCSID("$Id: copy_host_realm.c 22057 2007-11-11 15:13:13Z lha $");
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_error_code KRB5_LIB_FUNCTION
52krb5_copy_host_realm(krb5_context context,
53		     const krb5_realm *from,
54		     krb5_realm **to)
55{
56    int n, i;
57    const krb5_realm *p;
58
59    for (n = 0, p = from; *p != NULL; ++p)
60	++n;
61    ++n;
62    *to = malloc (n * sizeof(**to));
63    if (*to == NULL) {
64	krb5_set_error_string (context, "malloc: out of memory");
65	return ENOMEM;
66    }
67    for (i = 0; i < n; ++i)
68	(*to)[i] = NULL;
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_string (context, "malloc: out of memory");
74	    return ENOMEM;
75	}
76    }
77    return 0;
78}
79