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
40 extern char *inet_nettoa(struct in_addr in);
41
42 static int
putnetmask(const struct in_addr key,const struct in_addr netmask,FILE * fp)43 putnetmask(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 */
61 int
dogetnetmask(const char ** list)62 dogetnetmask(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