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 <sys/param.h> 30 #include <sys/socket.h> 31 #include <netinet/in.h> 32 #include <arpa/inet.h> 33 #include <netdb.h> 34 #include <stdio.h> 35 #include <ctype.h> 36 #include <string.h> 37 #include <stdarg.h> 38 #include <nsswitch.h> 39 40 extern int _ht_getnetbyname(void *, void *, va_list); 41 extern int _dns_getnetbyname(void *, void *, va_list); 42 extern int _nis_getnetbyname(void *, void *, va_list); 43 extern int _ht_getnetbyaddr(void *, void *, va_list); 44 extern int _dns_getnetbyaddr(void *, void *, va_list); 45 extern int _nis_getnetbyaddr(void *, void *, va_list); 46 47 /* Network lookup order if nsswitch.conf is broken or nonexistant */ 48 static const ns_src default_src[] = { 49 { NSSRC_FILES, NS_SUCCESS }, 50 { NSSRC_DNS, NS_SUCCESS }, 51 { 0 } 52 }; 53 54 struct netent * 55 getnetbyname(const char *name) 56 { 57 struct netent *hp = 0; 58 int rval; 59 60 61 static const ns_dtab dtab[] = { 62 NS_FILES_CB(_ht_getnetbyname, NULL) 63 { NSSRC_DNS, _dns_getnetbyname, NULL }, 64 NS_NIS_CB(_nis_getnetbyname, NULL) /* force -DHESIOD */ 65 { 0 } 66 }; 67 68 rval = nsdispatch((void *)&hp, dtab, NSDB_NETWORKS, "getnetbyname", 69 default_src, name); 70 71 if (rval != NS_SUCCESS) 72 return NULL; 73 else 74 return hp; 75 } 76 77 struct netent * 78 getnetbyaddr(u_long addr, int af) 79 { 80 struct netent *hp = 0; 81 int rval; 82 83 static const ns_dtab dtab[] = { 84 NS_FILES_CB(_ht_getnetbyaddr, NULL) 85 { NSSRC_DNS, _dns_getnetbyaddr, NULL }, 86 NS_NIS_CB(_nis_getnetbyaddr, NULL) /* force -DHESIOD */ 87 { 0 } 88 }; 89 90 rval = nsdispatch((void *)&hp, dtab, NSDB_NETWORKS, "getnetbyaddr", 91 default_src, addr, af); 92 93 if (rval != NS_SUCCESS) 94 return NULL; 95 else 96 return hp; 97 } 98 99 void 100 setnetent(stayopen) 101 int stayopen; 102 { 103 _setnethtent(stayopen); 104 _setnetdnsent(stayopen); 105 } 106 107 void 108 endnetent() 109 { 110 _endnethtent(); 111 _endnetdnsent(); 112 } 113