1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate  *	files/ether_addr.c -- "files" backend for nsswitch "ethers" database
24*0Sstevel@tonic-gate  *
25*0Sstevel@tonic-gate  * Copyright 1988-1995,2002 Sun Microsystems, Inc.  All rights reserved.
26*0Sstevel@tonic-gate  * Use is subject to license terms.
27*0Sstevel@tonic-gate  */
28*0Sstevel@tonic-gate 
29*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
30*0Sstevel@tonic-gate 
31*0Sstevel@tonic-gate /*
32*0Sstevel@tonic-gate  * All routines necessary to deal with the file /etc/ethers.  The file
33*0Sstevel@tonic-gate  * contains mappings from 48 bit ethernet addresses to their corresponding
34*0Sstevel@tonic-gate  * hosts names.  The addresses have an ascii representation of the form
35*0Sstevel@tonic-gate  * "x:x:x:x:x:x" where x is a hex number between 0x00 and 0xff;  the
36*0Sstevel@tonic-gate  * bytes are always in network order.
37*0Sstevel@tonic-gate  */
38*0Sstevel@tonic-gate 
39*0Sstevel@tonic-gate #include <sys/types.h>
40*0Sstevel@tonic-gate #include <sys/socket.h>
41*0Sstevel@tonic-gate #include <net/if.h>
42*0Sstevel@tonic-gate #include <netinet/in.h>
43*0Sstevel@tonic-gate #include <netinet/if_ether.h>
44*0Sstevel@tonic-gate #include <nss_dbdefs.h>
45*0Sstevel@tonic-gate #include "files_common.h"
46*0Sstevel@tonic-gate #include <strings.h>
47*0Sstevel@tonic-gate 
48*0Sstevel@tonic-gate #define	_PATH_ETHERS	"/etc/ethers"
49*0Sstevel@tonic-gate 
50*0Sstevel@tonic-gate static int
51*0Sstevel@tonic-gate check_host(args)
52*0Sstevel@tonic-gate 	nss_XbyY_args_t		*args;
53*0Sstevel@tonic-gate {
54*0Sstevel@tonic-gate 	return (strcmp(args->buf.buffer, args->key.name) == 0);
55*0Sstevel@tonic-gate }
56*0Sstevel@tonic-gate 
57*0Sstevel@tonic-gate static nss_status_t
58*0Sstevel@tonic-gate getbyhost(be, a)
59*0Sstevel@tonic-gate 	files_backend_ptr_t	be;
60*0Sstevel@tonic-gate 	void			*a;
61*0Sstevel@tonic-gate {
62*0Sstevel@tonic-gate 	nss_XbyY_args_t		*argp = (nss_XbyY_args_t *)a;
63*0Sstevel@tonic-gate 	char	hostname[MAXHOSTNAMELEN];
64*0Sstevel@tonic-gate 	nss_status_t		res;
65*0Sstevel@tonic-gate 
66*0Sstevel@tonic-gate 	argp->buf.buffer = hostname;
67*0Sstevel@tonic-gate 	argp->buf.buflen = MAXHOSTNAMELEN;
68*0Sstevel@tonic-gate 
69*0Sstevel@tonic-gate 	res = _nss_files_XY_all(be, argp, 0, argp->key.name, check_host);
70*0Sstevel@tonic-gate 
71*0Sstevel@tonic-gate 	argp->buf.buffer = NULL;
72*0Sstevel@tonic-gate 	argp->buf.buflen = 0;
73*0Sstevel@tonic-gate 	return (res);
74*0Sstevel@tonic-gate }
75*0Sstevel@tonic-gate 
76*0Sstevel@tonic-gate static int
77*0Sstevel@tonic-gate check_ether(args)
78*0Sstevel@tonic-gate 	nss_XbyY_args_t		*args;
79*0Sstevel@tonic-gate {
80*0Sstevel@tonic-gate 	return (ether_cmp(args->buf.result, args->key.ether) == 0);
81*0Sstevel@tonic-gate }
82*0Sstevel@tonic-gate 
83*0Sstevel@tonic-gate static nss_status_t
84*0Sstevel@tonic-gate getbyether(be, a)
85*0Sstevel@tonic-gate 	files_backend_ptr_t	be;
86*0Sstevel@tonic-gate 	void			*a;
87*0Sstevel@tonic-gate {
88*0Sstevel@tonic-gate 	nss_XbyY_args_t		*argp = (nss_XbyY_args_t *)a;
89*0Sstevel@tonic-gate 	struct ether_addr	etheraddr;
90*0Sstevel@tonic-gate 	nss_status_t		res;
91*0Sstevel@tonic-gate 
92*0Sstevel@tonic-gate 	argp->buf.result	= &etheraddr;
93*0Sstevel@tonic-gate 
94*0Sstevel@tonic-gate 	res = _nss_files_XY_all(be, argp, 0, NULL, check_ether);
95*0Sstevel@tonic-gate 
96*0Sstevel@tonic-gate 	argp->buf.result	= NULL;
97*0Sstevel@tonic-gate 	return (res);
98*0Sstevel@tonic-gate }
99*0Sstevel@tonic-gate 
100*0Sstevel@tonic-gate static files_backend_op_t ethers_ops[] = {
101*0Sstevel@tonic-gate 	_nss_files_destr,
102*0Sstevel@tonic-gate 	getbyhost,
103*0Sstevel@tonic-gate 	getbyether
104*0Sstevel@tonic-gate };
105*0Sstevel@tonic-gate 
106*0Sstevel@tonic-gate /*ARGSUSED*/
107*0Sstevel@tonic-gate nss_backend_t *
108*0Sstevel@tonic-gate _nss_files_ethers_constr(dummy1, dummy2, dummy3)
109*0Sstevel@tonic-gate 	const char	*dummy1, *dummy2, *dummy3;
110*0Sstevel@tonic-gate {
111*0Sstevel@tonic-gate 	return (_nss_files_constr(ethers_ops,
112*0Sstevel@tonic-gate 				sizeof (ethers_ops) / sizeof (ethers_ops[0]),
113*0Sstevel@tonic-gate 				_PATH_ETHERS,
114*0Sstevel@tonic-gate 				NSS_LINELEN_ETHERS,
115*0Sstevel@tonic-gate 				NULL));
116*0Sstevel@tonic-gate }
117