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 1.1 1994/09/25 02:12:26 pst Exp $"; 28 static char rcsid[] = "$Id: getnetbynis.c,v 1.1 1994/09/25 02:12:26 pst 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 <ctype.h> 38 #include <errno.h> 39 #include <string.h> 40 41 #define MAXALIASES 35 42 #define MAXADDRS 35 43 44 #ifdef YP 45 static char *host_aliases[MAXALIASES]; 46 #endif /* YP */ 47 48 static struct netent * 49 _getnetbynis(name, map) 50 char *name, *map; 51 { 52 #ifdef YP 53 register char *cp, **q; 54 static char *result; 55 int resultlen; 56 static struct netent h; 57 static char *domain = (char *)NULL; 58 59 if (domain == (char *)NULL) 60 if (yp_get_default_domain (&domain)) 61 return (NULL); 62 63 if (result) { 64 free(result); 65 result = 0; 66 } 67 68 if (yp_match(domain, map, name, strlen(name), &result, &resultlen)) 69 return (NULL); 70 71 if ((cp = index(result, '\n'))) 72 *cp = '\0'; 73 74 cp = strpbrk(result, " \t"); 75 *cp++ = '\0'; 76 h.n_name = result; 77 78 while (*cp == ' ' || *cp == '\t') 79 cp++; 80 81 h.n_net = inet_network(cp); 82 h.n_addrtype = AF_INET; 83 84 q = h.n_aliases = host_aliases; 85 cp = strpbrk(cp, " \t"); 86 if (cp != NULL) 87 *cp++ = '\0'; 88 while (cp && *cp) { 89 if (*cp == ' ' || *cp == '\t') { 90 cp++; 91 continue; 92 } 93 if (q < &host_aliases[MAXALIASES - 1]) 94 *q++ = cp; 95 cp = strpbrk(cp, " \t"); 96 if (cp != NULL) 97 *cp++ = '\0'; 98 } 99 *q = NULL; 100 return (&h); 101 #else 102 return (NULL); 103 #endif 104 } 105 106 struct netent * 107 _getnetbynisname(name) 108 char *name; 109 { 110 return _getnetbynis(name, "networks.byname"); 111 } 112 113 struct netent * 114 _getnetbynisaddr(addr, type) 115 long addr; 116 int type; 117 { 118 struct in_addr in; 119 char *str, *cp; 120 struct netent *np; 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