033af09de1
more readable. No functional change. Differential Revision: D3166 Reviewed by: kib Sponsored by: gandi.net
256 lines
6.4 KiB
C
256 lines
6.4 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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 <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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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <ctype.h>
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#include <err.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.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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const struct ypalias {
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char *alias, *name;
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} static ypaliases[] = {
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{ "passwd", "passwd.byname" },
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{ "master.passwd", "master.passwd.byname" },
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{ "shadow", "shadow.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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static void
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usage(void)
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{
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fprintf(stderr, "%s\n%s\n",
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"usage: ypwhich [-d domain] [[-t] -m [mname] | host]",
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" ypwhich -x");
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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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static int
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bind_host(char *dom, struct sockaddr_in *lsin)
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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 timeval tv;
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CLIENT *client;
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int sock, r;
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struct in_addr 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(lsin, YPBINDPROG, YPBINDVERS, tv, &sock);
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if (client == NULL) {
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warnx("can't clntudp_create: %s", 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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(xdrproc_t)xdr_domainname, &dom,
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(xdrproc_t)xdr_ypbind_resp, &ypbr, tv);
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if (r != RPC_SUCCESS) {
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warnx("can't clnt_call: %s", 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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warnx("can't yp_bind: reason: %s",
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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;
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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(int argc, char *argv[])
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{
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char *domnam = NULL, *master;
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char *map = NULL;
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struct ypmaplist *ypml, *y;
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struct hostent *hent;
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struct sockaddr_in lsin;
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int notrans, mode;
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int c, r;
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u_int i;
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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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domnam = 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 (!domnam)
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yp_get_default_domain(&domnam);
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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(&lsin, sizeof lsin);
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lsin.sin_family = AF_INET;
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lsin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
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if (bind_host(domnam, &lsin))
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exit(ERR_NOBINDING);
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break;
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case 1:
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bzero(&lsin, sizeof lsin);
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lsin.sin_family = AF_INET;
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if ((lsin.sin_addr.s_addr = inet_addr(argv[optind])) == INADDR_NONE) {
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hent = gethostbyname(argv[optind]);
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if (!hent)
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errx(ERR_NOSUCHHOST, "host %s unknown", argv[optind]);
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bcopy((char *)hent->h_addr_list[0],
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(char *)&lsin.sin_addr, sizeof lsin.sin_addr);
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}
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if (bind_host(domnam, &lsin))
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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(domnam, 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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errx(ERR_NOYPBIND, "not running ypbind");
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default:
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errx(ERR_NOMASTER, "can't find master for map %s: reason: %s",
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map, yperr_string(r));
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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(domnam, &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(domnam, 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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warnx("can't find the master of %s: reason: %s",
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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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errx(ERR_NOYPBIND, "not running ypbind");
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default:
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errx(ERR_NOMASTER, "can't get map list for domain %s: reason: %s",
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domnam, yperr_string(r));
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}
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exit(0);
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}
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