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 * $FreeBSD: src/usr.bin/ypwhich/ypwhich.c,v 1.11.2.1 2002/02/15 00:46:56 des Exp $ 30 * $DragonFly: src/usr.bin/ypwhich/ypwhich.c,v 1.3 2003/10/04 20:36:55 hmp Exp $ 31 */ 32 33 #include <sys/param.h> 34 #include <sys/types.h> 35 #include <sys/socket.h> 36 #include <netinet/in.h> 37 #include <arpa/inet.h> 38 #include <ctype.h> 39 #include <err.h> 40 #include <netdb.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <unistd.h> 45 #include <rpc/rpc.h> 46 #include <rpc/xdr.h> 47 #include <rpcsvc/yp.h> 48 struct dom_binding{}; 49 #include <rpcsvc/ypclnt.h> 50 51 #define ERR_USAGE 1 /* bad arguments - display 'usage' message */ 52 #define ERR_NOSUCHHOST 2 /* no such host */ 53 #define ERR_NOBINDING 3 /* error from ypbind -- domain not bound */ 54 #define ERR_NOYPBIND 4 /* ypbind not running */ 55 #define ERR_NOMASTER 5 /* could not find master server */ 56 57 extern bool_t xdr_domainname(); 58 59 struct ypalias { 60 char *alias, *name; 61 } ypaliases[] = { 62 { "passwd", "passwd.byname" }, 63 { "master.passwd", "master.passwd.byname" }, 64 { "group", "group.byname" }, 65 { "networks", "networks.byaddr" }, 66 { "hosts", "hosts.byaddr" }, 67 { "protocols", "protocols.bynumber" }, 68 { "services", "services.byname" }, 69 { "aliases", "mail.aliases" }, 70 { "ethers", "ethers.byname" }, 71 }; 72 73 static void 74 usage(void) 75 { 76 fprintf(stderr, "%s\n%s\n", 77 "usage: ypwhich [-d domain] [[-t] -m [mname] | host]", 78 " ypwhich -x"); 79 exit(ERR_USAGE); 80 } 81 82 83 /* 84 * Like yp_bind except can query a specific host 85 */ 86 int 87 bind_host(char *dom, struct sockaddr_in *sin) 88 { 89 struct hostent *hent = NULL; 90 struct ypbind_resp ypbr; 91 struct timeval tv; 92 CLIENT *client; 93 int sock, r; 94 struct in_addr ss_addr; 95 96 sock = RPC_ANYSOCK; 97 tv.tv_sec = 15; 98 tv.tv_usec = 0; 99 client = clntudp_create(sin, YPBINDPROG, YPBINDVERS, tv, &sock); 100 if (client == NULL) { 101 warnx("can't clntudp_create: %s", yperr_string(YPERR_YPBIND)); 102 return (YPERR_YPBIND); 103 } 104 105 tv.tv_sec = 5; 106 tv.tv_usec = 0; 107 r = clnt_call(client, YPBINDPROC_DOMAIN, 108 xdr_domainname, &dom, xdr_ypbind_resp, &ypbr, tv); 109 if (r != RPC_SUCCESS) { 110 warnx("can't clnt_call: %s", yperr_string(YPERR_YPBIND)); 111 clnt_destroy(client); 112 return (YPERR_YPBIND); 113 } else { 114 if (ypbr.ypbind_status != YPBIND_SUCC_VAL) { 115 warnx("can't yp_bind: reason: %s", 116 ypbinderr_string(ypbr.ypbind_resp_u.ypbind_error)); 117 clnt_destroy(client); 118 return (r); 119 } 120 } 121 clnt_destroy(client); 122 123 ss_addr = *(struct in_addr *)ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_addr; 124 /*printf("%08x\n", ss_addr);*/ 125 hent = gethostbyaddr((char *)&ss_addr, sizeof(ss_addr), AF_INET); 126 if (hent) 127 printf("%s\n", hent->h_name); 128 else 129 printf("%s\n", inet_ntoa(ss_addr)); 130 return (0); 131 } 132 133 int 134 main(int argc, char **argv) 135 { 136 char *domainname = NULL, *master, *map = NULL; 137 struct ypmaplist *ypml, *y; 138 struct hostent *hent; 139 struct sockaddr_in sin; 140 int notrans, mode, getmap; 141 int c, r, i; 142 143 getmap = notrans = mode = 0; 144 while ((c = getopt(argc, argv, "xd:mt")) != -1) 145 switch (c) { 146 case 'x': 147 for (i = 0; i<sizeof ypaliases/sizeof ypaliases[0]; i++) 148 printf("\"%s\" is an alias for \"%s\"\n", 149 ypaliases[i].alias, 150 ypaliases[i].name); 151 exit(0); 152 case 'd': 153 domainname = optarg; 154 break; 155 case 't': 156 notrans++; 157 break; 158 case 'm': 159 mode++; 160 break; 161 default: 162 usage(); 163 } 164 165 if (!domainname) 166 yp_get_default_domain(&domainname); 167 168 if (mode == 0) { 169 switch (argc-optind) { 170 case 0: 171 bzero(&sin, sizeof sin); 172 sin.sin_family = AF_INET; 173 sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 174 175 if (bind_host(domainname, &sin)) 176 exit(ERR_NOBINDING); 177 break; 178 case 1: 179 bzero(&sin, sizeof sin); 180 sin.sin_family = AF_INET; 181 if ((sin.sin_addr.s_addr = inet_addr(argv[optind])) == -1) { 182 hent = gethostbyname(argv[optind]); 183 if (!hent) 184 errx(ERR_NOSUCHHOST, "host %s unknown", argv[optind]); 185 bcopy((char *)hent->h_addr_list[0], 186 (char *)&sin.sin_addr, sizeof sin.sin_addr); 187 } 188 if (bind_host(domainname, &sin)) 189 exit(ERR_NOBINDING); 190 break; 191 default: 192 usage(); 193 } 194 exit(0); 195 } 196 197 if (argc-optind > 1) 198 usage(); 199 200 if (argv[optind]) { 201 map = argv[optind]; 202 for (i = 0; (!notrans) && i<sizeof ypaliases/sizeof ypaliases[0]; i++) 203 if (strcmp(map, ypaliases[i].alias) == 0) 204 map = ypaliases[i].name; 205 r = yp_master(domainname, map, &master); 206 switch (r) { 207 case 0: 208 printf("%s\n", master); 209 free(master); 210 break; 211 case YPERR_YPBIND: 212 errx(ERR_NOYPBIND, "not running ypbind"); 213 default: 214 errx(ERR_NOMASTER, "can't find master for map %s. reason: %s", 215 map, yperr_string(r)); 216 } 217 exit(0); 218 } 219 220 ypml = NULL; 221 r = yp_maplist(domainname, &ypml); 222 switch (r) { 223 case 0: 224 for (y = ypml; y;) { 225 ypml = y; 226 r = yp_master(domainname, ypml->map, &master); 227 switch (r) { 228 case 0: 229 printf("%s %s\n", ypml->map, master); 230 free(master); 231 break; 232 default: 233 warnx("can't find the master of %s: reason: %s", 234 ypml->map, yperr_string(r)); 235 break; 236 } 237 y = ypml->next; 238 free(ypml); 239 } 240 break; 241 case YPERR_YPBIND: 242 errx(ERR_NOYPBIND, "not running ypbind"); 243 default: 244 errx(ERR_NOMASTER, "can't get map list for domain %s. reason: %s", 245 domainname, yperr_string(r)); 246 } 247 exit(0); 248 } 249