1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22
23/*
24 * Copyright (c) 2018 Peter Tribble.
25 * Copyright (c) 1994-1996, by Sun Microsystems, Inc.
26 * All rights reserved.
27 */
28
29#include <stdio.h>
30#include <stdlib.h>
31#include <string.h>
32#include <sys/types.h>
33#include <sys/socket.h>
34#include <netinet/in.h>
35#include <arpa/inet.h>
36#include <netdb.h>
37#include <libsocket_priv.h>
38#include "getent.h"
39
40extern char *inet_nettoa(struct in_addr in);
41
42static int
43putnetmask(const struct in_addr key, const struct in_addr netmask, FILE *fp)
44{
45	int rc = 0;
46	struct in_addr net;
47
48	net.s_addr = ntohl(key.s_addr);
49	if (fprintf(fp, "%-20s", inet_nettoa(net)) == EOF)
50		rc = 1;
51	if (fprintf(fp, " %s", inet_ntoa(netmask)) == EOF)
52		rc = 1;
53	if (putc('\n', fp) == EOF)
54		rc = 1;
55	return (rc);
56}
57
58/*
59 * getnetmaskbyaddr - get entries from network database
60 */
61int
62dogetnetmask(const char **list)
63{
64	int rc = EXC_SUCCESS;
65	struct in_addr addr, netmask;
66
67	if (list == NULL || *list == NULL)
68		return (EXC_ENUM_NOT_SUPPORTED);
69
70	for (; *list != NULL; list++) {
71		addr.s_addr = htonl(inet_network(*list));
72		if (addr.s_addr != -1) {
73			if (getnetmaskbyaddr(addr, &netmask) == 0) {
74				(void) putnetmask(addr, netmask, stdout);
75			} else {
76				rc = EXC_NAME_NOT_FOUND;
77			}
78		} else {
79			rc = EXC_NAME_NOT_FOUND;
80		}
81	}
82
83	return (rc);
84}
85