256 lines
6.5 KiB
C
256 lines
6.5 KiB
C
/*
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* Copyright (c) 1992/3 Theo de Raadt <deraadt@fsa.ca>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef LINT
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static char rcsid[] = "ypwhich.c,v 1.2 1993/05/16 02:49:10 deraadt Exp";
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#endif
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <netdb.h>
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#include <rpc/rpc.h>
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#include <rpc/xdr.h>
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#include <rpcsvc/yp_prot.h>
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#include <rpcsvc/ypclnt.h>
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#define ERR_USAGE 1 /* bad arguments - display 'usage' message */
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#define ERR_NOSUCHHOST 2 /* no such host */
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#define ERR_NOBINDING 3 /* error from ypbind -- domain not bound */
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#define ERR_NOYPBIND 4 /* ypbind not running */
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#define ERR_NOMASTER 5 /* could not find master server */
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extern bool_t xdr_domainname();
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struct ypalias {
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char *alias, *name;
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} ypaliases[] = {
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{ "passwd", "passwd.byname" },
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{ "group", "group.byname" },
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{ "networks", "networks.byaddr" },
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{ "hosts", "hosts.byaddr" },
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{ "protocols", "protocols.bynumber" },
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{ "services", "services.byname" },
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{ "aliases", "mail.aliases" },
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{ "ethers", "ethers.byname" },
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};
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usage()
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{
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fprintf(stderr, "Usage:\n");
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fprintf(stderr, "\typwhich [-d domain] [[-t] -m [mname] | host]\n");
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fprintf(stderr, "\typwhich -x\n");
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exit(ERR_USAGE);
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}
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/*
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* Like yp_bind except can query a specific host
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*/
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bind_host(dom, sin)
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char *dom;
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struct sockaddr_in *sin;
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{
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struct hostent *hent = NULL;
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struct ypbind_resp ypbr;
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struct dom_binding *ysd;
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struct timeval tv;
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CLIENT *client;
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int sock, r;
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u_long ss_addr;
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sock = RPC_ANYSOCK;
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tv.tv_sec = 15;
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tv.tv_usec = 0;
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client = clntudp_create(sin, YPBINDPROG, YPBINDVERS, tv, &sock);
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if(client==NULL) {
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fprintf(stderr, "can't clntudp_create: %s\n",
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yperr_string(YPERR_YPBIND));
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return YPERR_YPBIND;
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}
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tv.tv_sec = 5;
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tv.tv_usec = 0;
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r = clnt_call(client, YPBINDPROC_DOMAIN,
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xdr_domainname, dom, xdr_ypbind_resp, &ypbr, tv);
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if( r != RPC_SUCCESS) {
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fprintf(stderr, "can't clnt_call: %s\n",
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yperr_string(YPERR_YPBIND));
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clnt_destroy(client);
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return YPERR_YPBIND;
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} else {
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if (ypbr.ypbind_status != YPBIND_SUCC_VAL) {
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fprintf(stderr, "can't yp_bind: Reason: %s\n",
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ypbinderr_string(ypbr.ypbind_respbody.ypbind_error));
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clnt_destroy(client);
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return r;
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}
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}
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clnt_destroy(client);
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ss_addr = ypbr.ypbind_respbody.ypbind_bindinfo.ypbind_binding_addr.s_addr;
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/*printf("%08x\n", ss_addr);*/
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hent = gethostbyaddr((char *)&ss_addr, sizeof(ss_addr), AF_INET);
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if (hent)
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printf("%s\n", hent->h_name);
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else
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printf("%s\n", inet_ntoa(ss_addr));
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return 0;
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}
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int
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main(argc, argv)
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char **argv;
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{
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char *domainname, *master, *map;
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struct ypmaplist *ypml, *y;
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extern char *optarg;
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extern int optind;
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struct hostent *hent;
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struct sockaddr_in sin;
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int notrans, mode, getmap;
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int c, r, i;
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yp_get_default_domain(&domainname);
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map = NULL;
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getmap = notrans = mode = 0;
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while( (c=getopt(argc, argv, "xd:mt")) != -1)
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switch(c) {
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case 'x':
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for(i=0; i<sizeof ypaliases/sizeof ypaliases[0]; i++)
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printf("\"%s\" is an alias for \"%s\"\n",
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ypaliases[i].alias,
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ypaliases[i].name);
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exit(0);
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case 'd':
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domainname = optarg;
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break;
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case 't':
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notrans++;
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break;
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case 'm':
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mode++;
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break;
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default:
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usage();
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}
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if(mode==0) {
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switch(argc-optind) {
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case 0:
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bzero(&sin, sizeof sin);
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sin.sin_family = AF_INET;
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sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
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if(bind_host(domainname, &sin))
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exit(ERR_NOBINDING);
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break;
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case 1:
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bzero(&sin, sizeof sin);
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sin.sin_family = AF_INET;
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if( (sin.sin_addr.s_addr=inet_addr(argv[optind]))==-1) {
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hent = gethostbyname(argv[optind]);
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if(!hent) {
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fprintf(stderr, "ypwhich: host %s unknown\n",
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argv[optind]);
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exit(ERR_NOSUCHHOST);
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}
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bcopy((char *)hent->h_addr_list[0],
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(char *)&sin.sin_addr, sizeof sin.sin_addr);
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}
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if(bind_host(domainname, &sin))
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exit(ERR_NOBINDING);
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break;
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default:
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usage();
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}
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exit(0);
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}
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if( argc-optind > 1)
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usage();
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if(argv[optind]) {
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map = argv[optind];
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for(i=0; (!notrans) && i<sizeof ypaliases/sizeof ypaliases[0]; i++)
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if( strcmp(map, ypaliases[i].alias) == 0)
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map = ypaliases[i].name;
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r = yp_master(domainname, map, &master);
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switch(r) {
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case 0:
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printf("%s\n", master);
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free(master);
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break;
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case YPERR_YPBIND:
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fprintf(stderr, "ypwhich: not running ypbind\n");
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exit(ERR_NOYPBIND);
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default:
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fprintf(stderr, "Can't find master for map %s. Reason: %s\n",
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map, yperr_string(r));
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exit(ERR_NOMASTER);
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}
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exit(0);
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}
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ypml = NULL;
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r = yp_maplist(domainname, &ypml);
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switch(r) {
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case 0:
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for(y=ypml; y; ) {
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ypml = y;
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r = yp_master(domainname, ypml->ypml_name, &master);
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switch(r) {
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case 0:
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printf("%s %s\n", ypml->ypml_name, master);
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free(master);
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break;
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default:
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fprintf(stderr,
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"YP: can't find the master of %s: Reason: %s\n",
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ypml->ypml_name, yperr_string(r));
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break;
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}
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y = ypml->ypml_next;
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free(ypml);
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}
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break;
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case YPERR_YPBIND:
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fprintf(stderr, "ypwhich: not running ypbind\n");
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exit(ERR_NOYPBIND);
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default:
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fprintf(stderr, "Can't get map list for domain %s. Reason: %s\n",
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domainname, yperr_string(r));
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exit(ERR_NOMASTER);
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}
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exit(0);
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}
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