1 /*- 2 * Copyright (c) 1994, Garrett Wollman 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 */ 25 26 #include <sys/cdefs.h> 27 __FBSDID("$FreeBSD$"); 28 29 #include "namespace.h" 30 #include <sys/param.h> 31 #include <sys/socket.h> 32 #include <netinet/in.h> 33 #include <arpa/inet.h> 34 #include <netdb.h> 35 #include <stdio.h> 36 #include <ctype.h> 37 #include <string.h> 38 #include <stdarg.h> 39 #include <nsswitch.h> 40 #include "un-namespace.h" 41 42 extern int _ht_getnetbyname(void *, void *, va_list); 43 extern int _dns_getnetbyname(void *, void *, va_list); 44 extern int _nis_getnetbyname(void *, void *, va_list); 45 extern int _ht_getnetbyaddr(void *, void *, va_list); 46 extern int _dns_getnetbyaddr(void *, void *, va_list); 47 extern int _nis_getnetbyaddr(void *, void *, va_list); 48 49 /* Network lookup order if nsswitch.conf is broken or nonexistant */ 50 static const ns_src default_src[] = { 51 { NSSRC_FILES, NS_SUCCESS }, 52 { NSSRC_DNS, NS_SUCCESS }, 53 { 0 } 54 }; 55 56 struct netent * 57 getnetbyname(const char *name) 58 { 59 struct netent *hp = 0; 60 int rval; 61 62 63 static const ns_dtab dtab[] = { 64 NS_FILES_CB(_ht_getnetbyname, NULL) 65 { NSSRC_DNS, _dns_getnetbyname, NULL }, 66 NS_NIS_CB(_nis_getnetbyname, NULL) /* force -DHESIOD */ 67 { 0 } 68 }; 69 70 rval = _nsdispatch((void *)&hp, dtab, NSDB_NETWORKS, "getnetbyname", 71 default_src, name); 72 73 if (rval != NS_SUCCESS) 74 return NULL; 75 else 76 return hp; 77 } 78 79 struct netent * 80 getnetbyaddr(u_long addr, int af) 81 { 82 struct netent *hp = 0; 83 int rval; 84 85 static const ns_dtab dtab[] = { 86 NS_FILES_CB(_ht_getnetbyaddr, NULL) 87 { NSSRC_DNS, _dns_getnetbyaddr, NULL }, 88 NS_NIS_CB(_nis_getnetbyaddr, NULL) /* force -DHESIOD */ 89 { 0 } 90 }; 91 92 rval = _nsdispatch((void *)&hp, dtab, NSDB_NETWORKS, "getnetbyaddr", 93 default_src, addr, af); 94 95 if (rval != NS_SUCCESS) 96 return NULL; 97 else 98 return hp; 99 } 100 101 void 102 setnetent(stayopen) 103 int stayopen; 104 { 105 _setnethtent(stayopen); 106 _setnetdnsent(stayopen); 107 } 108 109 void 110 endnetent() 111 { 112 _endnethtent(); 113 _endnetdnsent(); 114 } 115