usr.sbin/ypset/ypset.c

   1 /*      $NetBSD: ypset.c,v 1.15 2003/12/10 12:06:26 agc Exp $   */
   2
   3 /*
   4  * Copyright (c) 1992, 1993 Theo de Raadt <deraadt@fsa.ca>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  17  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  18  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  20  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 #ifndef lint
  31 __RCSID("$NetBSD: ypset.c,v 1.15 2003/12/10 12:06:26 agc 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 <string.h>
  39 #include <stdlib.h>
  40 #include <unistd.h>
  41 #include <err.h>
  42 #include <netdb.h>
  43
  44 #include <rpc/rpc.h>
  45 #include <rpc/xdr.h>
  46 #include <rpcsvc/yp_prot.h>
  47 #include <rpcsvc/ypclnt.h>
  48 #include <arpa/inet.h>
  49
  50 int     main __P((int, char *[]));
  51 static void usage __P((void));
  52 static void gethostaddr __P((const char *, struct in_addr *));
  53 static int bind_tohost __P((struct sockaddr_in *, char *, char *));
  54
  55 int
  56 main(argc, argv)
  57         int argc;
  58         char *argv[];
  59 {
  60         struct sockaddr_in sin;
  61         char *domainname;
  62         int c;
  63
  64         yp_get_default_domain(&domainname);
  65
  66         (void) memset(&sin, 0, sizeof sin);
  67         sin.sin_family = AF_INET;
  68         sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
  69
  70         while ((c = getopt(argc, argv, "h:d:")) != -1) {
  71                 switch(c) {
  72                 case 'd':
  73                         domainname = optarg;
  74                         break;
  75
  76                 case 'h':
  77                         gethostaddr(optarg, &sin.sin_addr);
  78                         break;
  79
  80                 default:
  81                         usage();
  82                 }
  83         }
  84
  85         if (domainname == NULL)
  86                 errx(1, "YP domain name not set");
  87
  88         argc -= optind;
  89         argv += optind;
  90
  91         if (argc != 1)
  92                 usage();
  93
  94         return bind_tohost(&sin, domainname, argv[0]) != 0;
  95 }
  96
  97 static void
  98 gethostaddr(host, ia)
  99         const char *host;
 100         struct in_addr *ia;
 101 {
 102         struct hostent *hp;
 103
 104         if (inet_aton(host, ia) != 0)
 105                 return;
 106
 107         hp = gethostbyname(host);
 108         if (hp == NULL)
 109                 errx(1, "Cannot get host address for %s: %s", host,
 110                     hstrerror(h_errno));
 111         (void) memcpy(ia, hp->h_addr, sizeof(*ia));
 112 }
 113
 114 static int
 115 bind_tohost(sin, dom, server)
 116         struct sockaddr_in *sin;
 117         char *dom, *server;
 118 {
 119         struct ypbind_setdom ypsd;
 120         struct timeval tv;
 121         CLIENT *client;
 122         int sock, port;
 123         int r;
 124
 125         port = htons(getrpcport(server, YPPROG, YPPROC_NULL, IPPROTO_UDP));
 126         if (port == 0)
 127                 errx(1, "%s not running ypserv.", server);
 128
 129         (void) memset(&ypsd, 0, sizeof ypsd);
 130
 131         gethostaddr(server, &ypsd.ypsetdom_addr);
 132
 133         (void) strlcpy(ypsd.ypsetdom_domain, dom, sizeof ypsd.ypsetdom_domain);
 134         ypsd.ypsetdom_port = port;
 135         ypsd.ypsetdom_vers = YPVERS;
 136
 137         tv.tv_sec = 15;
 138         tv.tv_usec = 0;
 139         sock = RPC_ANYSOCK;
 140
 141         client = clntudp_create(sin, YPBINDPROG, YPBINDVERS, tv, &sock);
 142         if (client == NULL) {
 143                 warnx("Can't yp_bind: Reason: %s", yperr_string(YPERR_YPBIND));
 144                 return YPERR_YPBIND;
 145         }
 146         client->cl_auth = authunix_create_default();
 147
 148         r = clnt_call(client, YPBINDPROC_SETDOM,
 149             xdr_ypbind_setdom, &ypsd, xdr_void, NULL, tv);
 150         if (r) {
 151                 warnx("Cannot ypset for domain %s on host %s: %s.",
 152                     dom, server, clnt_sperrno(r));
 153                 clnt_destroy(client);
 154                 return YPERR_YPBIND;
 155         }
 156         clnt_destroy(client);
 157         return 0;
 158 }
 159
 160 static void
 161 usage()
 162 {
 163         (void) fprintf(stderr, "usage: %s [-h host ] [-d domain] server\n",
 164             getprogname());
 165         exit(1);
 166 }