1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
5 * Authors: Doug Rabson <dfr@rabson.org>
6 * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
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 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include <sys/param.h>
31#include <sys/kernel.h>
32#include <sys/kobj.h>
33#include <sys/lock.h>
34#include <sys/malloc.h>
35#include <sys/mutex.h>
36
37#include <kgssapi/gssapi.h>
38#include <kgssapi/gssapi_impl.h>
39
40#include "gssd.h"
41
42OM_uint32
43gss_ip_to_dns(OM_uint32 *minor_status,
44    char *ip_addr,
45    char *dns_name)
46{
47	struct ip_to_dns_res res;
48	struct ip_to_dns_args args;
49	enum clnt_stat stat;
50	CLIENT *cl;
51
52	*minor_status = 0;
53	cl = kgss_gssd_client();
54	if (cl == NULL)
55		return (GSS_S_FAILURE);
56
57	args.ip_addr.ip_addr_len = strlen(ip_addr);
58	args.ip_addr.ip_addr_val = mem_alloc(args.ip_addr.ip_addr_len);
59	memcpy(args.ip_addr.ip_addr_val, ip_addr, args.ip_addr.ip_addr_len);
60
61	bzero(&res, sizeof(res));
62	stat = gssd_ip_to_dns_1(&args, &res, cl);
63	CLNT_RELEASE(cl);
64	if (stat != RPC_SUCCESS) {
65		*minor_status = stat;
66		return (GSS_S_FAILURE);
67	}
68
69	if (res.major_status != GSS_S_COMPLETE) {
70		*minor_status = res.minor_status;
71		return (res.major_status);
72	}
73
74	if (res.dns_name.dns_name_len == 0 ||
75	    res.dns_name.dns_name_len >= NI_MAXHOST) {
76		*minor_status = 0;
77		return (GSS_S_FAILURE);
78	}
79
80	memcpy(dns_name, res.dns_name.dns_name_val, res.dns_name.dns_name_len);
81	dns_name[res.dns_name.dns_name_len] = '\0';
82
83	return (GSS_S_COMPLETE);
84}
85