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