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
39 static int
puthostent(const struct hostent * hp,FILE * fp)40 puthostent(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 */
70 int
dogethost(const char ** list)71 dogethost(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