usr.sbin/ypset/ypset.c

   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.sbin/ypset/ypset.c,v 1.5.2.2 2002/02/15 00:47:00 des Exp $
  30  * $DragonFly: src/usr.sbin/ypset/ypset.c,v 1.3 2005/11/24 23:23:03 swildner Exp $
  31  */
  32
  33 #include <err.h>
  34 #include <netdb.h>
  35 #include <stdio.h>
  36 #include <string.h>
  37 #include <unistd.h>
  38 #include <sys/param.h>
  39 #include <sys/types.h>
  40 #include <sys/socket.h>
  41 #include <rpc/rpc.h>
  42 #include <rpc/xdr.h>
  43 #include <rpcsvc/yp.h>
  44 struct dom_binding{};
  45 #include <rpcsvc/ypclnt.h>
  46 #include <arpa/inet.h>
  47
  48 extern bool_t xdr_domainname();
  49
  50 static void
  51 usage(void)
  52 {
  53         fprintf(stderr, "usage: ypset [-h host] [-d domain] server\n");
  54         exit(1);
  55 }
  56
  57 int
  58 bind_tohost(struct sockaddr_in *sin, char *dom, char *server)
  59 {
  60         struct ypbind_setdom ypsd;
  61         struct timeval tv;
  62         struct hostent *hp;
  63         CLIENT *client;
  64         int sock, port;
  65         int r;
  66         unsigned long server_addr;
  67
  68         if ((port = htons(getrpcport(server, YPPROG, YPPROC_NULL, IPPROTO_UDP))) == 0)
  69                 errx(1, "%s not running ypserv", server);
  70
  71         bzero(&ypsd, sizeof ypsd);
  72
  73         if ((hp = gethostbyname (server)) != NULL) {
  74                 /* is this the most compatible way?? */
  75                 bcopy (hp->h_addr_list[0],
  76                        (u_long *)&ypsd.ypsetdom_binding.ypbind_binding_addr,
  77                        sizeof (unsigned long));
  78         } else if ((long)(server_addr = inet_addr (server)) == -1) {
  79                 errx(1, "can't find address for %s", server);
  80         } else
  81                 bcopy (&server_addr,
  82                        (u_long *)&ypsd.ypsetdom_binding.ypbind_binding_addr,
  83                        sizeof (server_addr));
  84
  85 /*      strncpy(ypsd.ypsetdom_domain, dom, sizeof ypsd.ypsetdom_domain); */
  86         ypsd.ypsetdom_domain = dom;
  87         *(u_long *)&ypsd.ypsetdom_binding.ypbind_binding_port = port;
  88         ypsd.ypsetdom_vers = YPVERS;
  89
  90         tv.tv_sec = 15;
  91         tv.tv_usec = 0;
  92         sock = RPC_ANYSOCK;
  93         client = clntudp_create(sin, YPBINDPROG, YPBINDVERS, tv, &sock);
  94         if (client == NULL) {
  95                 warnx("can't yp_bind, reason: %s", yperr_string(YPERR_YPBIND));
  96                 return (YPERR_YPBIND);
  97         }
  98         client->cl_auth = authunix_create_default();
  99
 100         r = clnt_call(client, YPBINDPROC_SETDOM,
 101                 xdr_ypbind_setdom, &ypsd, xdr_void, NULL, tv);
 102         if (r) {
 103                 warnx("sorry, cannot ypset for domain %s on host", dom);
 104                 clnt_destroy(client);
 105                 return (YPERR_YPBIND);
 106         }
 107         clnt_destroy(client);
 108         return (0);
 109 }
 110
 111 int
 112 main(int argc, char **argv)
 113 {
 114         struct sockaddr_in sin;
 115         struct hostent *hent;
 116         extern char *optarg;
 117         extern int optind;
 118         char *domainname;
 119         int c;
 120
 121         yp_get_default_domain(&domainname);
 122
 123         bzero(&sin, sizeof sin);
 124         sin.sin_family = AF_INET;
 125         sin.sin_addr.s_addr = htonl(0x7f000001);
 126
 127         while ((c = getopt(argc, argv, "h:d:")) != -1)
 128                 switch (c) {
 129                 case 'd':
 130                         domainname = optarg;
 131                         break;
 132                 case 'h':
 133                         if ((sin.sin_addr.s_addr = inet_addr(optarg)) == -1) {
 134                                 hent = gethostbyname(optarg);
 135                                 if (hent == NULL)
 136                                         errx(1, "host %s unknown", optarg);
 137                                 bcopy(&hent->h_addr_list[0], &sin.sin_addr,
 138                                         sizeof sin.sin_addr);
 139                         }
 140                         break;
 141                 default:
 142                         usage();
 143                 }
 144
 145         if (optind + 1 != argc)
 146                 usage();
 147
 148         if (bind_tohost(&sin, domainname, argv[optind]))
 149                 exit(1);
 150         exit(0);
 151 }