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 * nis/getnetent.c -- "nis" backend for nsswitch "networks" database 24*0Sstevel@tonic-gate * 25*0Sstevel@tonic-gate * Copyright (c) 1988-1992 Sun Microsystems Inc 26*0Sstevel@tonic-gate * All Rights Reserved. 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 #include "nis_common.h" 32*0Sstevel@tonic-gate #include <synch.h> 33*0Sstevel@tonic-gate #include <netdb.h> 34*0Sstevel@tonic-gate #include <sys/socket.h> 35*0Sstevel@tonic-gate #include <netinet/in.h> 36*0Sstevel@tonic-gate #include <arpa/inet.h> 37*0Sstevel@tonic-gate #include <string.h> 38*0Sstevel@tonic-gate 39*0Sstevel@tonic-gate static int nettoa(int anet, char *buf, int buflen); 40*0Sstevel@tonic-gate 41*0Sstevel@tonic-gate static nss_status_t 42*0Sstevel@tonic-gate getbyname(be, a) 43*0Sstevel@tonic-gate nis_backend_ptr_t be; 44*0Sstevel@tonic-gate void *a; 45*0Sstevel@tonic-gate { 46*0Sstevel@tonic-gate nss_XbyY_args_t *argp = (nss_XbyY_args_t *) a; 47*0Sstevel@tonic-gate 48*0Sstevel@tonic-gate return (_nss_nis_lookup(be, argp, 1, "networks.byname", 49*0Sstevel@tonic-gate argp->key.name, 0)); 50*0Sstevel@tonic-gate } 51*0Sstevel@tonic-gate 52*0Sstevel@tonic-gate static nss_status_t 53*0Sstevel@tonic-gate getbyaddr(be, a) 54*0Sstevel@tonic-gate nis_backend_ptr_t be; 55*0Sstevel@tonic-gate void *a; 56*0Sstevel@tonic-gate { 57*0Sstevel@tonic-gate nss_XbyY_args_t *argp = (nss_XbyY_args_t *) a; 58*0Sstevel@tonic-gate char addrstr[16]; 59*0Sstevel@tonic-gate 60*0Sstevel@tonic-gate if (nettoa((int) argp->key.netaddr.net, addrstr, 16) != 0) 61*0Sstevel@tonic-gate return (NSS_UNAVAIL); /* it's really ENOMEM */ 62*0Sstevel@tonic-gate return (_nss_nis_lookup(be, argp, 1, "networks.byaddr", addrstr, 0)); 63*0Sstevel@tonic-gate } 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate static nis_backend_op_t net_ops[] = { 66*0Sstevel@tonic-gate _nss_nis_destr, 67*0Sstevel@tonic-gate _nss_nis_endent, 68*0Sstevel@tonic-gate _nss_nis_setent, 69*0Sstevel@tonic-gate _nss_nis_getent_netdb, 70*0Sstevel@tonic-gate getbyname, 71*0Sstevel@tonic-gate getbyaddr 72*0Sstevel@tonic-gate }; 73*0Sstevel@tonic-gate 74*0Sstevel@tonic-gate /*ARGSUSED*/ 75*0Sstevel@tonic-gate nss_backend_t * 76*0Sstevel@tonic-gate _nss_nis_networks_constr(dummy1, dummy2, dummy3) 77*0Sstevel@tonic-gate const char *dummy1, *dummy2, *dummy3; 78*0Sstevel@tonic-gate { 79*0Sstevel@tonic-gate return (_nss_nis_constr(net_ops, 80*0Sstevel@tonic-gate sizeof (net_ops) / sizeof (net_ops[0]), 81*0Sstevel@tonic-gate "networks.byaddr")); 82*0Sstevel@tonic-gate } 83*0Sstevel@tonic-gate 84*0Sstevel@tonic-gate /* 85*0Sstevel@tonic-gate * Takes an unsigned integer in host order, and returns a printable 86*0Sstevel@tonic-gate * string for it as a network number. To allow for the possibility of 87*0Sstevel@tonic-gate * naming subnets, only trailing dot-zeros are truncated. 88*0Sstevel@tonic-gate */ 89*0Sstevel@tonic-gate static int 90*0Sstevel@tonic-gate nettoa(anet, buf, buflen) 91*0Sstevel@tonic-gate int anet; 92*0Sstevel@tonic-gate char *buf; 93*0Sstevel@tonic-gate int buflen; 94*0Sstevel@tonic-gate { 95*0Sstevel@tonic-gate char *p; 96*0Sstevel@tonic-gate struct in_addr in; 97*0Sstevel@tonic-gate int addr; 98*0Sstevel@tonic-gate 99*0Sstevel@tonic-gate if (buf == 0) 100*0Sstevel@tonic-gate return (1); 101*0Sstevel@tonic-gate in = inet_makeaddr(anet, INADDR_ANY); 102*0Sstevel@tonic-gate addr = in.s_addr; 103*0Sstevel@tonic-gate (void) strncpy(buf, inet_ntoa(in), buflen); 104*0Sstevel@tonic-gate if ((IN_CLASSA_HOST & htonl(addr)) == 0) { 105*0Sstevel@tonic-gate p = strchr(buf, '.'); 106*0Sstevel@tonic-gate if (p == NULL) 107*0Sstevel@tonic-gate return (1); 108*0Sstevel@tonic-gate *p = 0; 109*0Sstevel@tonic-gate } else if ((IN_CLASSB_HOST & htonl(addr)) == 0) { 110*0Sstevel@tonic-gate p = strchr(buf, '.'); 111*0Sstevel@tonic-gate if (p == NULL) 112*0Sstevel@tonic-gate return (1); 113*0Sstevel@tonic-gate p = strchr(p+1, '.'); 114*0Sstevel@tonic-gate if (p == NULL) 115*0Sstevel@tonic-gate return (1); 116*0Sstevel@tonic-gate *p = 0; 117*0Sstevel@tonic-gate } else if ((IN_CLASSC_HOST & htonl(addr)) == 0) { 118*0Sstevel@tonic-gate p = strrchr(buf, '.'); 119*0Sstevel@tonic-gate if (p == NULL) 120*0Sstevel@tonic-gate return (1); 121*0Sstevel@tonic-gate *p = 0; 122*0Sstevel@tonic-gate } 123*0Sstevel@tonic-gate return (0); 124*0Sstevel@tonic-gate } 125