xref: /illumos-gate/usr/src/cmd/getent/dogethost.c (revision 2a8bcb4e)
1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate 
23*7c478bd9Sstevel@tonic-gate /*
24*7c478bd9Sstevel@tonic-gate  * Copyright (c) 1994-2000 by Sun Microsystems, Inc.
25*7c478bd9Sstevel@tonic-gate  * All rights reserved.
26*7c478bd9Sstevel@tonic-gate  */
27*7c478bd9Sstevel@tonic-gate 
28*7c478bd9Sstevel@tonic-gate #include <stdio.h>
29*7c478bd9Sstevel@tonic-gate #include <stdlib.h>
30*7c478bd9Sstevel@tonic-gate #include <sys/types.h>
31*7c478bd9Sstevel@tonic-gate #include <sys/socket.h>
32*7c478bd9Sstevel@tonic-gate #include <netinet/in.h>
33*7c478bd9Sstevel@tonic-gate #include <arpa/inet.h>
34*7c478bd9Sstevel@tonic-gate #include <string.h>
35*7c478bd9Sstevel@tonic-gate #include <netdb.h>
36*7c478bd9Sstevel@tonic-gate #include "getent.h"
37*7c478bd9Sstevel@tonic-gate 
38*7c478bd9Sstevel@tonic-gate static int
puthostent(const struct hostent * hp,FILE * fp)39*7c478bd9Sstevel@tonic-gate puthostent(const struct hostent *hp, FILE *fp)
40*7c478bd9Sstevel@tonic-gate {
41*7c478bd9Sstevel@tonic-gate 	char **p;
42*7c478bd9Sstevel@tonic-gate 	int rc = 0;
43*7c478bd9Sstevel@tonic-gate 
44*7c478bd9Sstevel@tonic-gate 	if (hp == NULL) {
45*7c478bd9Sstevel@tonic-gate 		return (1);
46*7c478bd9Sstevel@tonic-gate 	}
47*7c478bd9Sstevel@tonic-gate 
48*7c478bd9Sstevel@tonic-gate 	for (p = hp->h_addr_list; *p != 0; p++) {
49*7c478bd9Sstevel@tonic-gate 		struct in_addr in;
50*7c478bd9Sstevel@tonic-gate 		char **q;
51*7c478bd9Sstevel@tonic-gate 
52*7c478bd9Sstevel@tonic-gate 		(void) memcpy((char *)&in.s_addr, *p, sizeof (in));
53*7c478bd9Sstevel@tonic-gate 		if (fprintf(fp, "%s\t%s",
54*7c478bd9Sstevel@tonic-gate 			inet_ntoa(in), hp->h_name) == EOF)
55*7c478bd9Sstevel@tonic-gate 			rc = 1;
56*7c478bd9Sstevel@tonic-gate 		for (q = hp->h_aliases; *q != 0; q++) {
57*7c478bd9Sstevel@tonic-gate 			if (fprintf(fp, " %s", *q) == EOF)
58*7c478bd9Sstevel@tonic-gate 				rc = 1;
59*7c478bd9Sstevel@tonic-gate 		}
60*7c478bd9Sstevel@tonic-gate 		if (putc('\n', fp) == EOF)
61*7c478bd9Sstevel@tonic-gate 			rc = 1;
62*7c478bd9Sstevel@tonic-gate 	}
63*7c478bd9Sstevel@tonic-gate 	return (rc);
64*7c478bd9Sstevel@tonic-gate }
65*7c478bd9Sstevel@tonic-gate 
66*7c478bd9Sstevel@tonic-gate /*
67*7c478bd9Sstevel@tonic-gate  * gethostbyname/addr - get entries from hosts database
68*7c478bd9Sstevel@tonic-gate  */
69*7c478bd9Sstevel@tonic-gate int
dogethost(const char ** list)70*7c478bd9Sstevel@tonic-gate dogethost(const char **list)
71*7c478bd9Sstevel@tonic-gate {
72*7c478bd9Sstevel@tonic-gate 	struct hostent *hp;
73*7c478bd9Sstevel@tonic-gate 	int rc = EXC_SUCCESS;
74*7c478bd9Sstevel@tonic-gate 
75*7c478bd9Sstevel@tonic-gate 	if (list == NULL || *list == NULL) {
76*7c478bd9Sstevel@tonic-gate 		while ((hp = gethostent()) != NULL)
77*7c478bd9Sstevel@tonic-gate 			(void) puthostent(hp, stdout);
78*7c478bd9Sstevel@tonic-gate 	} else {
79*7c478bd9Sstevel@tonic-gate 		for (; *list != NULL; list++) {
80*7c478bd9Sstevel@tonic-gate 			struct in_addr addr;
81*7c478bd9Sstevel@tonic-gate 			addr.s_addr = inet_addr(*list);
82*7c478bd9Sstevel@tonic-gate 			if (addr.s_addr != (in_addr_t)-1)
83*7c478bd9Sstevel@tonic-gate 				hp = gethostbyaddr((char *)&addr,
84*7c478bd9Sstevel@tonic-gate 					sizeof (addr), AF_INET);
85*7c478bd9Sstevel@tonic-gate 			else
86*7c478bd9Sstevel@tonic-gate 				hp = gethostbyname(*list);
87*7c478bd9Sstevel@tonic-gate 			if (hp == NULL)
88*7c478bd9Sstevel@tonic-gate 				rc = EXC_NAME_NOT_FOUND;
89*7c478bd9Sstevel@tonic-gate 			else
90*7c478bd9Sstevel@tonic-gate 				(void) puthostent(hp, stdout);
91*7c478bd9Sstevel@tonic-gate 		}
92*7c478bd9Sstevel@tonic-gate 	}
93*7c478bd9Sstevel@tonic-gate 
94*7c478bd9Sstevel@tonic-gate 	return (rc);
95*7c478bd9Sstevel@tonic-gate }
96