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 sccsid[] = "@(#)$Id: getnetbynis.c,v 1.3 1995/05/30 05:40:47 rgrimes Exp $"; 28 static char rcsid[] = "$Id: getnetbynis.c,v 1.3 1995/05/30 05:40:47 rgrimes Exp $"; 29 #endif /* LIBC_SCCS and not lint */ 30 31 #include <sys/param.h> 32 #include <sys/socket.h> 33 #include <netinet/in.h> 34 #include <arpa/inet.h> 35 #include <netdb.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <ctype.h> 39 #include <errno.h> 40 #include <string.h> 41 42 #define MAXALIASES 35 43 #define MAXADDRS 35 44 45 #ifdef YP 46 static char *host_aliases[MAXALIASES]; 47 #endif /* YP */ 48 49 static struct netent * 50 _getnetbynis(name, map) 51 char *name, *map; 52 { 53 #ifdef YP 54 register char *cp, **q; 55 static char *result; 56 int resultlen; 57 static struct netent h; 58 static char *domain = (char *)NULL; 59 60 if (domain == (char *)NULL) 61 if (yp_get_default_domain (&domain)) 62 return (NULL); 63 64 if (result) { 65 free(result); 66 result = 0; 67 } 68 69 if (yp_match(domain, map, name, strlen(name), &result, &resultlen)) 70 return (NULL); 71 72 if ((cp = index(result, '\n'))) 73 *cp = '\0'; 74 75 cp = strpbrk(result, " \t"); 76 *cp++ = '\0'; 77 h.n_name = result; 78 79 while (*cp == ' ' || *cp == '\t') 80 cp++; 81 82 h.n_net = inet_network(cp); 83 h.n_addrtype = AF_INET; 84 85 q = h.n_aliases = host_aliases; 86 cp = strpbrk(cp, " \t"); 87 if (cp != NULL) 88 *cp++ = '\0'; 89 while (cp && *cp) { 90 if (*cp == ' ' || *cp == '\t') { 91 cp++; 92 continue; 93 } 94 if (q < &host_aliases[MAXALIASES - 1]) 95 *q++ = cp; 96 cp = strpbrk(cp, " \t"); 97 if (cp != NULL) 98 *cp++ = '\0'; 99 } 100 *q = NULL; 101 return (&h); 102 #else 103 return (NULL); 104 #endif 105 } 106 107 struct netent * 108 _getnetbynisname(name) 109 char *name; 110 { 111 return _getnetbynis(name, "networks.byname"); 112 } 113 114 struct netent * 115 _getnetbynisaddr(addr, type) 116 long addr; 117 int type; 118 { 119 struct in_addr in; 120 char *str, *cp; 121 122 if (type != AF_INET) 123 return (NULL); 124 125 in.s_addr = addr; 126 str = inet_ntoa(in); 127 cp = str + strlen(str) - 2; 128 while(!strcmp(cp, ".0")) { 129 *cp = '\0'; 130 cp = str + strlen(str) - 2; 131 } 132 133 return _getnetbynis(str, "networks.byaddr"); 134 } 135