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 #if defined(LIBC_SCCS) && !defined(lint) 27 static char rcsid[] = "$FreeBSD$"; 28 #endif /* LIBC_SCCS and not lint */ 29 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 41 extern int _ht_getnetbyname(void *, void *, va_list); 42 extern int _dns_getnetbyname(void *, void *, va_list); 43 extern int _nis_getnetbyname(void *, void *, va_list); 44 extern int _ht_getnetbyaddr(void *, void *, va_list); 45 extern int _dns_getnetbyaddr(void *, void *, va_list); 46 extern int _nis_getnetbyaddr(void *, void *, va_list); 47 48 /* Network lookup order if nsswitch.conf is broken or nonexistant */ 49 static const ns_src default_src[] = { 50 { NSSRC_FILES, NS_SUCCESS }, 51 { NSSRC_DNS, NS_SUCCESS }, 52 { 0 } 53 }; 54 55 struct netent * 56 getnetbyname(const char *name) 57 { 58 struct netent *hp = 0; 59 int rval; 60 61 62 static const ns_dtab dtab[] = { 63 NS_FILES_CB(_ht_getnetbyname, NULL) 64 { NSSRC_DNS, _dns_getnetbyname, NULL }, 65 NS_NIS_CB(_nis_getnetbyname, NULL) /* force -DHESIOD */ 66 { 0 } 67 }; 68 69 rval = nsdispatch((void *)&hp, dtab, NSDB_NETWORKS, "getnetbyname", 70 default_src, name); 71 72 if (rval != NS_SUCCESS) 73 return NULL; 74 else 75 return hp; 76 } 77 78 struct netent * 79 getnetbyaddr(u_long addr, int af) 80 { 81 struct netent *hp = 0; 82 int rval; 83 84 static const ns_dtab dtab[] = { 85 NS_FILES_CB(_ht_getnetbyaddr, NULL) 86 { NSSRC_DNS, _dns_getnetbyaddr, NULL }, 87 NS_NIS_CB(_nis_getnetbyaddr, NULL) /* force -DHESIOD */ 88 { 0 } 89 }; 90 91 rval = nsdispatch((void *)&hp, dtab, NSDB_NETWORKS, "getnetbyaddr", 92 default_src, addr, af); 93 94 if (rval != NS_SUCCESS) 95 return NULL; 96 else 97 return hp; 98 } 99 100 void 101 setnetent(stayopen) 102 int stayopen; 103 { 104 _setnethtent(stayopen); 105 _setnetdnsent(stayopen); 106 } 107 108 void 109 endnetent() 110 { 111 _endnethtent(); 112 _endnetdnsent(); 113 } 114