1 /* 2 * Copyright (c) 1992, 1993 Theo de Raadt <deraadt@fsa.ca> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Theo de Raadt. 16 * 4. The name of the author may not be used to endorse or promote 17 * products derived from this software without specific prior written 18 * permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 21 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 24 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #ifndef LINT 34 static char rcsid[] = "$Id: ypwhich.c,v 1.3 1994/05/25 09:55:02 deraadt Exp $"; 35 #endif 36 37 #include <sys/param.h> 38 #include <sys/types.h> 39 #include <sys/socket.h> 40 #include <stdio.h> 41 #include <ctype.h> 42 #include <netdb.h> 43 #include <rpc/rpc.h> 44 #include <rpc/xdr.h> 45 #include <rpcsvc/yp_prot.h> 46 #include <rpcsvc/ypclnt.h> 47 48 extern bool_t xdr_domainname(); 49 50 struct ypalias { 51 char *alias, *name; 52 } ypaliases[] = { 53 { "passwd", "passwd.byname" }, 54 { "group", "group.byname" }, 55 { "networks", "networks.byaddr" }, 56 { "hosts", "hosts.byaddr" }, 57 { "protocols", "protocols.bynumber" }, 58 { "services", "services.byname" }, 59 { "aliases", "mail.aliases" }, 60 { "ethers", "ethers.byname" }, 61 }; 62 63 usage() 64 { 65 fprintf(stderr, "Usage:\n"); 66 fprintf(stderr, "\typwhich [-d domain] [[-t] -m [mname] | host]\n"); 67 fprintf(stderr, "\typwhich -x\n"); 68 exit(1); 69 } 70 71 72 /* 73 * Like yp_bind except can query a specific host 74 */ 75 bind_host(dom, sin) 76 char *dom; 77 struct sockaddr_in *sin; 78 { 79 struct hostent *hent = NULL; 80 struct ypbind_resp ypbr; 81 struct dom_binding *ysd; 82 struct timeval tv; 83 CLIENT *client; 84 int sock, r; 85 u_long ss_addr; 86 87 sock = RPC_ANYSOCK; 88 tv.tv_sec = 15; 89 tv.tv_usec = 0; 90 client = clntudp_create(sin, YPBINDPROG, YPBINDVERS, tv, &sock); 91 if(client==NULL) { 92 fprintf(stderr, "can't clntudp_create: %s\n", 93 yperr_string(YPERR_YPBIND)); 94 return YPERR_YPBIND; 95 } 96 97 tv.tv_sec = 5; 98 tv.tv_usec = 0; 99 r = clnt_call(client, YPBINDPROC_DOMAIN, 100 xdr_domainname, dom, xdr_ypbind_resp, &ypbr, tv); 101 if( r != RPC_SUCCESS) { 102 fprintf(stderr, "can't clnt_call: %s\n", 103 yperr_string(YPERR_YPBIND)); 104 clnt_destroy(client); 105 return YPERR_YPBIND; 106 } else { 107 if (ypbr.ypbind_status != YPBIND_SUCC_VAL) { 108 fprintf(stderr, "can't yp_bind: Reason: %s\n", 109 yperr_string(ypbr.ypbind_status)); 110 clnt_destroy(client); 111 return r; 112 } 113 } 114 clnt_destroy(client); 115 116 ss_addr = ypbr.ypbind_respbody.ypbind_bindinfo.ypbind_binding_addr.s_addr; 117 /*printf("%08x\n", ss_addr);*/ 118 hent = gethostbyaddr((char *)&ss_addr, sizeof(ss_addr), AF_INET); 119 if (hent) 120 printf("%s\n", hent->h_name); 121 else 122 printf("%s\n", inet_ntoa(ss_addr)); 123 return 0; 124 } 125 126 int 127 main(argc, argv) 128 char **argv; 129 { 130 char *domainname, *master, *map; 131 struct ypmaplist *ypml, *y; 132 extern char *optarg; 133 extern int optind; 134 struct hostent *hent; 135 struct sockaddr_in sin; 136 int notrans, mode, getmap; 137 int c, r, i; 138 139 yp_get_default_domain(&domainname); 140 141 map = NULL; 142 getmap = notrans = mode = 0; 143 while( (c=getopt(argc, argv, "xd:mt")) != -1) 144 switch(c) { 145 case 'x': 146 for(i=0; i<sizeof ypaliases/sizeof ypaliases[0]; i++) 147 printf("Use \"%s\" for \"%s\"\n", 148 ypaliases[i].alias, 149 ypaliases[i].name); 150 exit(0); 151 case 'd': 152 domainname = optarg; 153 break; 154 case 't': 155 notrans++; 156 break; 157 case 'm': 158 mode++; 159 break; 160 default: 161 usage(); 162 } 163 164 if(mode==0) { 165 switch(argc-optind) { 166 case 0: 167 bzero(&sin, sizeof sin); 168 sin.sin_family = AF_INET; 169 sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 170 171 if(bind_host(domainname, &sin)) 172 exit(1); 173 break; 174 case 1: 175 bzero(&sin, sizeof sin); 176 sin.sin_family = AF_INET; 177 if( (sin.sin_addr.s_addr=inet_addr(argv[optind]))==-1) { 178 hent = gethostbyname(argv[optind]); 179 if(!hent) { 180 fprintf(stderr, "ypwhich: host %s unknown\n", 181 argv[optind]); 182 exit(1); 183 } 184 bcopy((char *)hent->h_addr_list[0], 185 (char *)&sin.sin_addr, sizeof sin.sin_addr); 186 } 187 if(bind_host(domainname, &sin)) 188 exit(1); 189 break; 190 default: 191 usage(); 192 } 193 exit(0); 194 } 195 196 if( argc-optind > 1) 197 usage(); 198 199 if(argv[optind]) { 200 map = argv[optind]; 201 for(i=0; (!notrans) && i<sizeof ypaliases/sizeof ypaliases[0]; i++) 202 if( strcmp(map, ypaliases[i].alias) == 0) 203 map = ypaliases[i].name; 204 r = yp_master(domainname, map, &master); 205 switch(r) { 206 case 0: 207 printf("%s\n", master); 208 free(master); 209 break; 210 case YPERR_YPBIND: 211 fprintf(stderr, "ypwhich: not running ypbind\n"); 212 exit(1); 213 default: 214 fprintf(stderr, "Can't find master for map %s. Reason: %s\n", 215 map, yperr_string(r)); 216 exit(1); 217 } 218 exit(0); 219 } 220 221 ypml = NULL; 222 r = yp_maplist(domainname, &ypml); 223 switch(r) { 224 case 0: 225 for(y=ypml; y; ) { 226 ypml = y; 227 r = yp_master(domainname, ypml->ypml_name, &master); 228 switch(r) { 229 case 0: 230 printf("%s %s\n", ypml->ypml_name, master); 231 free(master); 232 break; 233 default: 234 fprintf(stderr, 235 "YP: can't find the master of %s: Reason: %s\n", 236 ypml->ypml_name, yperr_string(r)); 237 break; 238 } 239 y = ypml->ypml_next; 240 free(ypml); 241 } 242 break; 243 case YPERR_YPBIND: 244 fprintf(stderr, "ypwhich: not running ypbind\n"); 245 exit(1); 246 default: 247 fprintf(stderr, "Can't get map list for domain %s. Reason: %s\n", 248 domainname, yperr_string(r)); 249 exit(1); 250 } 251 exit(0); 252 } 253