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#ident	"%Z%%M%	%I%	%E% SMI"
23
24/*
25 * Copyright (c) 1994, 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 "getent.h"
38
39/*
40 * Print a network number such as 129.144
41 */
42char *
43inet_nettoa(struct in_addr in)
44{
45	u_long addr = htonl(in.s_addr);
46	u_char *up = (u_char *)&addr;
47	static char result[256];
48
49	/* Omit leading zeros */
50	if (up[0]) {
51		(void) sprintf(result, "%d.%d.%d.%d",
52		    up[0], up[1], up[2], up[3]);
53	} else if (up[1]) {
54		(void) sprintf(result, "%d.%d.%d", up[1], up[2], up[3]);
55	} else if (up[2]) {
56		(void) sprintf(result, "%d.%d", up[2], up[3]);
57	} else {
58		(void) sprintf(result, "%d", up[3]);
59	}
60	return (result);
61}
62
63static int
64putnetent(const struct netent *np, FILE *fp)
65{
66	char **p;
67	int rc = 0;
68	struct in_addr in;
69
70	if (np == NULL) {
71		return (1);
72	}
73
74	in.s_addr = np->n_net;
75	if (fprintf(fp, "%-20s %s",
76		    np->n_name, inet_nettoa(in)) == EOF)
77		rc = 1;
78	for (p = np->n_aliases; *p != 0; p++) {
79		if (fprintf(fp, " %s", *p) == EOF)
80			rc = 1;
81	}
82	if (putc('\n', fp) == EOF)
83		rc = 1;
84	return (rc);
85}
86
87/*
88 * getnetbyname/addr - get entries from network database
89 */
90int
91dogetnet(const char **list)
92{
93	struct netent *np;
94	int rc = EXC_SUCCESS;
95
96	if (list == NULL || *list == NULL) {
97		while ((np = getnetent()) != NULL)
98			(void) putnetent(np, stdout);
99	} else {
100		for (; *list != NULL; list++) {
101			long addr = inet_network(*list);
102			if (addr != -1)
103				np = getnetbyaddr(addr, AF_INET);
104			else
105				np = getnetbyname(*list);
106			if (np == NULL)
107				rc = EXC_NAME_NOT_FOUND;
108			else
109				(void) putnetent(np, stdout);
110		}
111	}
112
113	return (rc);
114}
115