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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 * 25 * files/getnetent.c -- "files" backend for nsswitch "networks" database 26 */ 27 28 #pragma ident "%Z%%M% %I% %E% SMI" 29 30 31 #include <sys/types.h> 32 #include <sys/socket.h> 33 #include <netinet/in.h> 34 #include <arpa/inet.h> 35 #include <netdb.h> 36 #include "files_common.h" 37 #include <strings.h> 38 #include <ctype.h> 39 40 static nss_status_t 41 getbyname(be, a) 42 files_backend_ptr_t be; 43 void *a; 44 { 45 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a; 46 47 return (_nss_files_XY_all(be, argp, 1, argp->key.name, 48 _nss_files_check_name_aliases)); 49 } 50 51 static int 52 check_addr(nss_XbyY_args_t *argp, const char *line, int linelen) 53 { 54 55 const char *limit, *linep, *addrstart; 56 int addrlen; 57 char addrbuf[NSS_LINELEN_NETWORKS]; 58 in_addr_t linenet; 59 60 linep = line; 61 limit = line + linelen; 62 63 /* skip network name */ 64 while (linep < limit && !isspace(*linep)) 65 linep++; 66 /* skip the delimiting spaces */ 67 while (linep < limit && isspace(*linep)) 68 linep++; 69 if (linep == limit) 70 return (0); 71 72 addrstart = linep; 73 while (linep < limit && !isspace(*linep)) 74 linep++; 75 addrlen = linep - addrstart; 76 if (addrlen < sizeof (addrbuf)) { 77 (void) memcpy(addrbuf, addrstart, addrlen); 78 addrbuf[addrlen] = '\0'; 79 if ((linenet = inet_network(addrbuf)) == 80 (in_addr_t)0xffffffffU) 81 return (0); 82 return (AF_INET == argp->key.netaddr.type && 83 linenet == argp->key.netaddr.net); 84 } 85 return (0); 86 } 87 88 static nss_status_t 89 getbyaddr(be, a) 90 files_backend_ptr_t be; 91 void *a; 92 { 93 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a; 94 95 return (_nss_files_XY_all(be, argp, 1, 0, check_addr)); 96 } 97 98 static files_backend_op_t net_ops[] = { 99 _nss_files_destr, 100 _nss_files_endent, 101 _nss_files_setent, 102 _nss_files_getent_netdb, 103 getbyname, 104 getbyaddr 105 }; 106 107 /*ARGSUSED*/ 108 nss_backend_t * 109 _nss_files_networks_constr(dummy1, dummy2, dummy3) 110 const char *dummy1, *dummy2, *dummy3; 111 { 112 return (_nss_files_constr(net_ops, 113 sizeof (net_ops) / sizeof (net_ops[0]), 114 _PATH_NETWORKS, 115 NSS_LINELEN_NETWORKS, 116 NULL)); 117 } 118