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#pragma ident	"%Z%%M%	%I%	%E% SMI"
23
24/*
25 * Copyright (c) 1994-2000 by Sun Microsystems, Inc.
26 * All rights reserved.
27 */
28
29#include <stdio.h>
30#include <stdlib.h>
31#include <sys/types.h>
32#include <sys/socket.h>
33#include <netinet/in.h>
34#include <arpa/inet.h>
35#include <string.h>
36#include <netdb.h>
37#include "getent.h"
38
39static int
40puthostent(const struct hostent *hp, FILE *fp)
41{
42	char **p;
43	int rc = 0;
44
45	if (hp == NULL) {
46		return (1);
47	}
48
49	for (p = hp->h_addr_list; *p != 0; p++) {
50		struct in_addr in;
51		char **q;
52
53		(void) memcpy((char *)&in.s_addr, *p, sizeof (in));
54		if (fprintf(fp, "%s\t%s",
55			inet_ntoa(in), hp->h_name) == EOF)
56			rc = 1;
57		for (q = hp->h_aliases; *q != 0; q++) {
58			if (fprintf(fp, " %s", *q) == EOF)
59				rc = 1;
60		}
61		if (putc('\n', fp) == EOF)
62			rc = 1;
63	}
64	return (rc);
65}
66
67/*
68 * gethostbyname/addr - get entries from hosts database
69 */
70int
71dogethost(const char **list)
72{
73	struct hostent *hp;
74	int rc = EXC_SUCCESS;
75
76	if (list == NULL || *list == NULL) {
77		while ((hp = gethostent()) != NULL)
78			(void) puthostent(hp, stdout);
79	} else {
80		for (; *list != NULL; list++) {
81			struct in_addr addr;
82			addr.s_addr = inet_addr(*list);
83			if (addr.s_addr != (in_addr_t)-1)
84				hp = gethostbyaddr((char *)&addr,
85					sizeof (addr), AF_INET);
86			else
87				hp = gethostbyname(*list);
88			if (hp == NULL)
89				rc = EXC_NAME_NOT_FOUND;
90			else
91				(void) puthostent(hp, stdout);
92		}
93	}
94
95	return (rc);
96}
97