1/*
2 * Copyright (c) 1999 - 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 * Copy the list of realms from `from' to `to'.
38 *
39 * @param context Kerberos 5 context.
40 * @param from list of realms to copy from.
41 * @param to list of realms to copy to, free list of krb5_free_host_realm().
42 *
43 * @return Returns 0 to indicate success. Otherwise an kerberos et
44 * error code is returned, see krb5_get_error_message().
45 *
46 * @ingroup krb5
47 */
48
49KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
50krb5_copy_host_realm(krb5_context context,
51		     const krb5_realm *from,
52		     krb5_realm **to)
53{
54    unsigned int n, i;
55    const krb5_realm *p;
56
57    for (n = 1, p = from; *p != NULL; ++p)
58	++n;
59
60    *to = calloc (n, sizeof(**to));
61    if (*to == NULL) {
62	krb5_set_error_message (context, ENOMEM,
63				N_("malloc: out of memory", ""));
64	return ENOMEM;
65    }
66
67    for (i = 0, p = from; *p != NULL; ++p, ++i) {
68	(*to)[i] = strdup(*p);
69	if ((*to)[i] == NULL) {
70	    krb5_free_host_realm (context, *to);
71	    krb5_set_error_message (context, ENOMEM,
72				    N_("malloc: out of memory", ""));
73	    return ENOMEM;
74	}
75    }
76    return 0;
77}
78