17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5cb5caa98Sdjl * Common Development and Distribution License (the "License"). 6cb5caa98Sdjl * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate /* 22*767b0abfSmichen * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23cb5caa98Sdjl * Use is subject to license terms. 247c478bd9Sstevel@tonic-gate * 25cb5caa98Sdjl * files/netmasks.c -- "files" backend for nsswitch "netmasks" database 267c478bd9Sstevel@tonic-gate */ 277c478bd9Sstevel@tonic-gate 287c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 297c478bd9Sstevel@tonic-gate 307c478bd9Sstevel@tonic-gate /* 317c478bd9Sstevel@tonic-gate * All routines necessary to deal with the file /etc/inet/netmasks. The file 327c478bd9Sstevel@tonic-gate * contains mappings from 32 bit network internet addresses to their 337c478bd9Sstevel@tonic-gate * corresponding 32 bit mask internet addresses. The addresses are in dotted 347c478bd9Sstevel@tonic-gate * internet address form. 357c478bd9Sstevel@tonic-gate */ 367c478bd9Sstevel@tonic-gate 377c478bd9Sstevel@tonic-gate #include "files_common.h" 387c478bd9Sstevel@tonic-gate #include <string.h> 397c478bd9Sstevel@tonic-gate #include <sys/types.h> 407c478bd9Sstevel@tonic-gate #include <sys/socket.h> 417c478bd9Sstevel@tonic-gate #include <net/if.h> 427c478bd9Sstevel@tonic-gate #include <netinet/in.h> 437c478bd9Sstevel@tonic-gate #include <arpa/inet.h> 447c478bd9Sstevel@tonic-gate #include <nss_dbdefs.h> 45cb5caa98Sdjl #include <ctype.h> 467c478bd9Sstevel@tonic-gate 477c478bd9Sstevel@tonic-gate /* 487c478bd9Sstevel@tonic-gate * Validate 'files' netmasks entry. The comparison objects are in IPv4 497c478bd9Sstevel@tonic-gate * internet address format. 507c478bd9Sstevel@tonic-gate */ 517c478bd9Sstevel@tonic-gate static int 52cb5caa98Sdjl check_addr(nss_XbyY_args_t *argp, const char *line, int linelen) 537c478bd9Sstevel@tonic-gate { 54cb5caa98Sdjl const char *limit, *linep, *addrstart; 55cb5caa98Sdjl int addrlen; 56cb5caa98Sdjl char addrbuf[NSS_LINELEN_NETMASKS]; 57cb5caa98Sdjl struct in_addr lineaddr, argsaddr; 587c478bd9Sstevel@tonic-gate 59cb5caa98Sdjl linep = line; 60cb5caa98Sdjl limit = line + linelen; 61cb5caa98Sdjl 62cb5caa98Sdjl /* skip leading spaces */ 63cb5caa98Sdjl while (linep < limit && isspace(*linep)) 64cb5caa98Sdjl linep++; 65cb5caa98Sdjl 66cb5caa98Sdjl addrstart = linep; 67cb5caa98Sdjl while (linep < limit && !isspace(*linep)) 68cb5caa98Sdjl linep++; 69cb5caa98Sdjl if (linep == limit) 70cb5caa98Sdjl return (0); 71cb5caa98Sdjl addrlen = linep - addrstart; 72cb5caa98Sdjl if (addrlen < sizeof (addrbuf)) { 73cb5caa98Sdjl (void) memcpy(addrbuf, addrstart, addrlen); 74cb5caa98Sdjl addrbuf[addrlen] = '\0'; 75cb5caa98Sdjl if ((lineaddr.s_addr = inet_addr(addrbuf)) == 76cb5caa98Sdjl (in_addr_t)0xffffffffU) 77cb5caa98Sdjl return (0); 78cb5caa98Sdjl if ((argsaddr.s_addr = inet_addr(argp->key.name)) 79cb5caa98Sdjl == (in_addr_t)0xffffffffU) 80cb5caa98Sdjl return (0); 81cb5caa98Sdjl return (lineaddr.s_addr == argsaddr.s_addr); 82cb5caa98Sdjl } 83cb5caa98Sdjl return (0); 847c478bd9Sstevel@tonic-gate } 857c478bd9Sstevel@tonic-gate 867c478bd9Sstevel@tonic-gate static nss_status_t 877c478bd9Sstevel@tonic-gate getbynet(be, a) 887c478bd9Sstevel@tonic-gate files_backend_ptr_t be; 897c478bd9Sstevel@tonic-gate void *a; 907c478bd9Sstevel@tonic-gate { 917c478bd9Sstevel@tonic-gate nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a; 927c478bd9Sstevel@tonic-gate nss_status_t res; 937c478bd9Sstevel@tonic-gate char tmpbuf[NSS_LINELEN_NETMASKS]; 947c478bd9Sstevel@tonic-gate 95cb5caa98Sdjl /* 96cb5caa98Sdjl * use the buffer passed in if result is to be returned 97cb5caa98Sdjl * in /etc file format 98cb5caa98Sdjl */ 99cb5caa98Sdjl if (argp->buf.result != NULL) { 1007c478bd9Sstevel@tonic-gate argp->buf.buffer = tmpbuf; 1017c478bd9Sstevel@tonic-gate argp->buf.buflen = NSS_LINELEN_NETMASKS; 102cb5caa98Sdjl } 103*767b0abfSmichen res = _nss_files_XY_all(be, argp, 1, argp->key.name, check_addr); 104cb5caa98Sdjl if (argp->buf.result != NULL) { 1057c478bd9Sstevel@tonic-gate argp->buf.buffer = NULL; 1067c478bd9Sstevel@tonic-gate argp->buf.buflen = 0; 107cb5caa98Sdjl } else { 108cb5caa98Sdjl /* the frontend expects the netmask data only */ 109cb5caa98Sdjl if (res == NSS_SUCCESS) { 110cb5caa98Sdjl char *m; 111cb5caa98Sdjl char *s = (char *)argp->returnval; 112cb5caa98Sdjl int l = 0; 113cb5caa98Sdjl 114cb5caa98Sdjl m = s + argp->returnlen - 1; 115cb5caa98Sdjl 116cb5caa98Sdjl /* skip trailing spaces */ 117cb5caa98Sdjl while (s < m && isspace(*m)) 118cb5caa98Sdjl m--; 119cb5caa98Sdjl 120cb5caa98Sdjl for (; s <= m; m--) { 121cb5caa98Sdjl if (isspace(*m)) 122cb5caa98Sdjl break; 123cb5caa98Sdjl l++; 124cb5caa98Sdjl } 125cb5caa98Sdjl m++; 126cb5caa98Sdjl (void) memmove(argp->returnval, m, l); 127cb5caa98Sdjl argp->returnlen = l; 128cb5caa98Sdjl *(s + l) = '\0'; 129cb5caa98Sdjl } 130cb5caa98Sdjl } 1317c478bd9Sstevel@tonic-gate 1327c478bd9Sstevel@tonic-gate return (res); 1337c478bd9Sstevel@tonic-gate } 1347c478bd9Sstevel@tonic-gate 1357c478bd9Sstevel@tonic-gate static files_backend_op_t netmasks_ops[] = { 1367c478bd9Sstevel@tonic-gate _nss_files_destr, 1377c478bd9Sstevel@tonic-gate getbynet 1387c478bd9Sstevel@tonic-gate }; 1397c478bd9Sstevel@tonic-gate 1407c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 1417c478bd9Sstevel@tonic-gate nss_backend_t * 1427c478bd9Sstevel@tonic-gate _nss_files_netmasks_constr(dummy1, dummy2, dummy3) 1437c478bd9Sstevel@tonic-gate const char *dummy1, *dummy2, *dummy3; 1447c478bd9Sstevel@tonic-gate { 1457c478bd9Sstevel@tonic-gate return (_nss_files_constr(netmasks_ops, 1467c478bd9Sstevel@tonic-gate sizeof (netmasks_ops) / sizeof (netmasks_ops[0]), 1477c478bd9Sstevel@tonic-gate _PATH_NETMASKS, NSS_LINELEN_NETMASKS, NULL)); 1487c478bd9Sstevel@tonic-gate } 149