ypwhich.c revision 1930
1/* 2 * Copyright (c) 1992/3 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. The name of the author may not be used to endorse or promote 14 * products derived from this software without specific prior written 15 * permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 18 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#ifndef LINT 31static char rcsid[] = "ypwhich.c,v 1.2 1993/05/16 02:49:10 deraadt Exp"; 32#endif 33 34#include <sys/param.h> 35#include <sys/types.h> 36#include <sys/socket.h> 37#include <stdio.h> 38#include <ctype.h> 39#include <netdb.h> 40#include <rpc/rpc.h> 41#include <rpc/xdr.h> 42#include <rpcsvc/yp_prot.h> 43#include <rpcsvc/ypclnt.h> 44 45extern bool_t xdr_domainname(); 46 47struct ypalias { 48 char *alias, *name; 49} ypaliases[] = { 50 { "passwd", "passwd.byname" }, 51 { "group", "group.byname" }, 52 { "networks", "networks.byaddr" }, 53 { "hosts", "hosts.byaddr" }, 54 { "protocols", "protocols.bynumber" }, 55 { "services", "services.byname" }, 56 { "aliases", "mail.aliases" }, 57 { "ethers", "ethers.byname" }, 58}; 59 60usage() 61{ 62 fprintf(stderr, "Usage:\n"); 63 fprintf(stderr, "\typwhich [-d domain] [[-t] -m [mname] | host]\n"); 64 fprintf(stderr, "\typwhich -x\n"); 65 exit(1); 66} 67 68 69/* 70 * Like yp_bind except can query a specific host 71 */ 72bind_host(dom, sin) 73char *dom; 74struct sockaddr_in *sin; 75{ 76 struct hostent *hent = NULL; 77 struct ypbind_resp ypbr; 78 struct dom_binding *ysd; 79 struct timeval tv; 80 CLIENT *client; 81 int sock, r; 82 u_long ss_addr; 83 84 sock = RPC_ANYSOCK; 85 tv.tv_sec = 15; 86 tv.tv_usec = 0; 87 client = clntudp_create(sin, YPBINDPROG, YPBINDVERS, tv, &sock); 88 if(client==NULL) { 89 fprintf(stderr, "can't clntudp_create: %s\n", 90 yperr_string(YPERR_YPBIND)); 91 return YPERR_YPBIND; 92 } 93 94 tv.tv_sec = 5; 95 tv.tv_usec = 0; 96 r = clnt_call(client, YPBINDPROC_DOMAIN, 97 xdr_domainname, dom, xdr_ypbind_resp, &ypbr, tv); 98 if( r != RPC_SUCCESS) { 99 fprintf(stderr, "can't clnt_call: %s\n", 100 yperr_string(YPERR_YPBIND)); 101 clnt_destroy(client); 102 return YPERR_YPBIND; 103 } else { 104 if (ypbr.ypbind_status != YPBIND_SUCC_VAL) { 105 fprintf(stderr, "can't yp_bind: Reason: %s\n", 106 yperr_string(ypbr.ypbind_status)); 107 clnt_destroy(client); 108 return r; 109 } 110 } 111 clnt_destroy(client); 112 113 ss_addr = ypbr.ypbind_respbody.ypbind_bindinfo.ypbind_binding_addr.s_addr; 114 /*printf("%08x\n", ss_addr);*/ 115 hent = gethostbyaddr((char *)&ss_addr, sizeof(ss_addr), AF_INET); 116 if (hent) 117 printf("%s\n", hent->h_name); 118 else 119 printf("%s\n", inet_ntoa(ss_addr)); 120 return 0; 121} 122 123int 124main(argc, argv) 125char **argv; 126{ 127 char *domainname, *master, *map; 128 struct ypmaplist *ypml, *y; 129 extern char *optarg; 130 extern int optind; 131 struct hostent *hent; 132 struct sockaddr_in sin; 133 int notrans, mode, getmap; 134 int c, r, i; 135 136 yp_get_default_domain(&domainname); 137 138 map = NULL; 139 getmap = notrans = mode = 0; 140 while( (c=getopt(argc, argv, "xd:mt")) != -1) 141 switch(c) { 142 case 'x': 143 for(i=0; i<sizeof ypaliases/sizeof ypaliases[0]; i++) 144 printf("Use \"%s\" for \"%s\"\n", 145 ypaliases[i].alias, 146 ypaliases[i].name); 147 exit(0); 148 case 'd': 149 domainname = optarg; 150 break; 151 case 't': 152 notrans++; 153 break; 154 case 'm': 155 mode++; 156 break; 157 default: 158 usage(); 159 } 160 161 if(mode==0) { 162 switch(argc-optind) { 163 case 0: 164 bzero(&sin, sizeof sin); 165 sin.sin_family = AF_INET; 166 sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 167 168 if(bind_host(domainname, &sin)) 169 exit(1); 170 break; 171 case 1: 172 bzero(&sin, sizeof sin); 173 sin.sin_family = AF_INET; 174 if( (sin.sin_addr.s_addr=inet_addr(argv[optind]))==-1) { 175 hent = gethostbyname(argv[optind]); 176 if(!hent) { 177 fprintf(stderr, "ypwhich: host %s unknown\n", 178 argv[optind]); 179 exit(1); 180 } 181 bcopy((char *)hent->h_addr_list[0], 182 (char *)&sin.sin_addr, sizeof sin.sin_addr); 183 } 184 if(bind_host(domainname, &sin)) 185 exit(1); 186 break; 187 default: 188 usage(); 189 } 190 exit(0); 191 } 192 193 if( argc-optind > 1) 194 usage(); 195 196 if(argv[optind]) { 197 map = argv[optind]; 198 for(i=0; (!notrans) && i<sizeof ypaliases/sizeof ypaliases[0]; i++) 199 if( strcmp(map, ypaliases[i].alias) == 0) 200 map = ypaliases[i].name; 201 r = yp_master(domainname, map, &master); 202 switch(r) { 203 case 0: 204 printf("%s\n", master); 205 free(master); 206 break; 207 case YPERR_YPBIND: 208 fprintf(stderr, "ypwhich: not running ypbind\n"); 209 exit(1); 210 default: 211 fprintf(stderr, "Can't find master for map %s. Reason: %s\n", 212 map, yperr_string(r)); 213 exit(1); 214 } 215 exit(0); 216 } 217 218 ypml = NULL; 219 r = yp_maplist(domainname, &ypml); 220 switch(r) { 221 case 0: 222 for(y=ypml; y; ) { 223 ypml = y; 224 r = yp_master(domainname, ypml->ypml_name, &master); 225 switch(r) { 226 case 0: 227 printf("%s %s\n", ypml->ypml_name, master); 228 free(master); 229 break; 230 default: 231 fprintf(stderr, 232 "YP: can't find the master of %s: Reason: %s\n", 233 ypml->ypml_name, yperr_string(r)); 234 break; 235 } 236 y = ypml->ypml_next; 237 free(ypml); 238 } 239 break; 240 case YPERR_YPBIND: 241 fprintf(stderr, "ypwhich: not running ypbind\n"); 242 exit(1); 243 default: 244 fprintf(stderr, "Can't get map list for domain %s. Reason: %s\n", 245 domainname, yperr_string(r)); 246 exit(1); 247 } 248 exit(0); 249} 250