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 * files/netmasks.c -- "files" backend for nsswitch "netmasks" database 24 * 25 * Copyright (c) 1996 Sun Microsystems Inc 26 * All Rights Reserved. 27 */ 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 /* 32 * All routines necessary to deal with the file /etc/inet/netmasks. The file 33 * contains mappings from 32 bit network internet addresses to their 34 * corresponding 32 bit mask internet addresses. The addresses are in dotted 35 * internet address form. 36 */ 37 38 #include "files_common.h" 39 #include <string.h> 40 #include <sys/types.h> 41 #include <sys/socket.h> 42 #include <net/if.h> 43 #include <netinet/in.h> 44 #include <arpa/inet.h> 45 #include <nss_dbdefs.h> 46 47 /* 48 * Validate 'files' netmasks entry. The comparison objects are in IPv4 49 * internet address format. 50 */ 51 static int 52 check_addr(args) 53 nss_XbyY_args_t *args; 54 { 55 struct in_addr tmp; 56 57 tmp.s_addr = inet_addr(args->key.name); 58 return (memcmp(args->buf.buffer, (char *)&tmp, 59 sizeof (struct in_addr)) == 0); 60 } 61 62 static nss_status_t 63 getbynet(be, a) 64 files_backend_ptr_t be; 65 void *a; 66 { 67 nss_XbyY_args_t *argp = (nss_XbyY_args_t *) a; 68 nss_status_t res; 69 char tmpbuf[NSS_LINELEN_NETMASKS]; 70 71 argp->buf.buffer = tmpbuf; 72 argp->buf.buflen = NSS_LINELEN_NETMASKS; 73 res = _nss_files_XY_all(be, argp, 0, argp->key.name, check_addr); 74 argp->buf.buffer = NULL; 75 argp->buf.buflen = 0; 76 77 return (res); 78 } 79 80 static files_backend_op_t netmasks_ops[] = { 81 _nss_files_destr, 82 getbynet 83 }; 84 85 /*ARGSUSED*/ 86 nss_backend_t * 87 _nss_files_netmasks_constr(dummy1, dummy2, dummy3) 88 const char *dummy1, *dummy2, *dummy3; 89 { 90 return (_nss_files_constr(netmasks_ops, 91 sizeof (netmasks_ops) / sizeof (netmasks_ops[0]), 92 _PATH_NETMASKS, NSS_LINELEN_NETMASKS, NULL)); 93 } 94