/* $OpenBSD: ypwhich.c,v 1.23 2015/02/08 23:40:35 deraadt Exp $ */ /* $NetBSD: ypwhich.c,v 1.6 1996/05/13 02:43:48 thorpej Exp $ */ /*- * SPDX-License-Identifier: BSD-2-Clause-NetBSD * * Copyright (c) 1992, 1993 Theo de Raadt * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "yplib_host.h" static const struct ypalias { char *alias, *name; } ypaliases[] = { { "passwd", "passwd.byname" }, { "master.passwd", "master.passwd.byname" }, { "shadow", "shadow.byname" }, { "group", "group.byname" }, { "networks", "networks.byaddr" }, { "hosts", "hosts.byaddr" }, { "protocols", "protocols.bynumber" }, { "services", "services.byname" }, { "aliases", "mail.aliases" }, { "ethers", "ethers.byname" }, }; static void usage(void) { fprintf(stderr, "usage: ypwhich [-t] [-d domain] [[-h] host]\n" " ypwhich [-t] [-d domain] [-h host] -m [mname]\n" " ypwhich -x\n"); exit(1); } /* * Like yp_bind except can query a specific host */ static int bind_host(char *dom, struct sockaddr_in *sin) { struct hostent *hent = NULL; struct ypbind_resp ypbr; struct in_addr ss_addr; struct timeval tv; CLIENT *client; int sock, r; sock = RPC_ANYSOCK; tv.tv_sec = 15; tv.tv_usec = 0; client = clntudp_create(sin, YPBINDPROG, YPBINDVERS, tv, &sock); if (client == NULL) { warnx("host is not bound to a ypmaster"); return (YPERR_YPBIND); } tv.tv_sec = 5; tv.tv_usec = 0; r = clnt_call(client, YPBINDPROC_DOMAIN, (xdrproc_t)xdr_domainname, &dom, (xdrproc_t)xdr_ypbind_resp, &ypbr, tv); if (r != RPC_SUCCESS) { warnx("can't clnt_call: %s", yperr_string(YPERR_YPBIND)); clnt_destroy(client); return (YPERR_YPBIND); } else { if (ypbr.ypbind_status != YPBIND_SUCC_VAL) { warnx("can't yp_bind: reason: %s", yperr_string(ypbr.ypbind_status)); clnt_destroy(client); return (r); } } clnt_destroy(client); memmove(&ss_addr.s_addr, &ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_addr, sizeof (ss_addr)); hent = gethostbyaddr((char *)&ss_addr.s_addr, sizeof(ss_addr.s_addr), AF_INET); if (hent != NULL) printf("%s\n", hent->h_name); else printf("%s\n", inet_ntoa(ss_addr)); return (0); } int main(int argc, char *argv[]) { char *domain, *master, *map = NULL, *host = NULL; int notrans = 0, mode = 0, c, r, i; struct ypmaplist *ypml, *y; struct sockaddr_in sin; struct hostent *hent; CLIENT *client = NULL; yp_get_default_domain(&domain); if (domain == NULL) errx(1, "YP domain name not set"); while ((c = getopt(argc, argv, "xd:h:mt")) != -1) switch (c) { case 'x': for (i = 0; i < nitems(ypaliases); i++) printf("\"%s\" is an alias for \"%s\"\n", ypaliases[i].alias, ypaliases[i].name); exit(0); case 'h': host = optarg; break; case 'd': domain = optarg; break; case 't': notrans = 1; break; case 'm': mode = 1; break; default: usage(); } argc -= optind; argv += optind; if (mode == 0) { switch (argc) { case 0: memset(&sin, 0, sizeof sin); sin.sin_family = AF_INET; sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); if (bind_host(domain, &sin)) exit(1); break; case 1: bzero(&sin, sizeof sin); sin.sin_family = AF_INET; if (inet_aton(argv[0], &sin.sin_addr) == 0) { hent = gethostbyname(argv[0]); if (!hent) { errx(1, "host %s unknown", argv[0]); } } if (bind_host(domain, &sin)) exit(1); break; default: usage(); } exit(0); } if (argc > 1) usage(); if (host != NULL) client = yp_bind_host(host, YPPROG, YPVERS, 0, 1); if (argv[0]) { map = argv[0]; if (notrans == 0) { for (i = 0; i < nitems(ypaliases); i++) if (strcmp(map, ypaliases[i].alias) == 0) map = ypaliases[i].name; } if (host != NULL) r = yp_master_host(client, domain, map, &master); else r = yp_master(domain, map, &master); switch (r) { case 0: printf("%s\n", master); free(master); break; case YPERR_YPBIND: errx(1, "not running ypbind"); default: errx(1, "can't find master for map %s: reason: %s", map, yperr_string(r)); } exit(0); } ypml = NULL; if (host != NULL) r = yp_maplist_host(client, domain, &ypml); else r = yp_maplist(domain, &ypml); r = 0; switch (r) { case 0: for (y = ypml; y; ) { ypml = y; if (host != NULL) { r = yp_master_host(client, domain, ypml->map, &master); } else { r = yp_master(domain, ypml->map, &master); } switch (r) { case 0: printf("%s %s\n", ypml->map, master); free(master); break; default: warnx("can't find the master of %s: reason: %s", ypml->map, yperr_string(r)); break; } y = ypml->next; free(ypml); } break; case YPERR_YPBIND: errx(1, "not running ypbind"); default: errx(1, "can't get map list for domain %s: reason: %s", domain, yperr_string(r)); } exit(0); }