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 1.4 2007/11/25 01:28:24 swildner Exp $
  31  */
  32
  33 #include <err.h>
  34 #include <netdb.h>
  35 #include <stdio.h>
  36 #include <stdlib.h>
  37 #include <string.h>
  38 #include <unistd.h>
  39 #include <sys/param.h>
  40 #include <sys/types.h>
  41 #include <sys/socket.h>
  42 #include <rpc/rpc.h>
  43 #include <rpc/xdr.h>
  44 #include <rpcsvc/yp.h>
  45 struct dom_binding{};
  46 #include <rpcsvc/ypclnt.h>
  47 #include <arpa/inet.h>
  48
  49 extern bool_t xdr_domainname();
  50
  51 static void
  52 usage(void)
  53 {
  54         fprintf(stderr, "usage: ypset [-h host] [-d domain] server\n");
  55         exit(1);
  56 }
  57
  58 int
  59 bind_tohost(struct sockaddr_in *sin, char *dom, char *server)
  60 {
  61         struct ypbind_setdom ypsd;
  62         struct timeval tv;
  63         struct hostent *hp;
  64         CLIENT *client;
  65         int sock, port;
  66         int r;
  67         unsigned long server_addr;
  68
  69         if ((port = htons(getrpcport(server, YPPROG, YPPROC_NULL, IPPROTO_UDP))) == 0)
  70                 errx(1, "%s not running ypserv", server);
  71
  72         bzero(&ypsd, sizeof ypsd);
  73
  74         if ((hp = gethostbyname (server)) != NULL) {
  75                 /* is this the most compatible way?? */
  76                 bcopy (hp->h_addr_list[0],
  77                        (u_long *)&ypsd.ypsetdom_binding.ypbind_binding_addr,
  78                        sizeof (unsigned long));
  79         } else if ((long)(server_addr = inet_addr (server)) == -1) {
  80                 errx(1, "can't find address for %s", server);
  81         } else
  82                 bcopy (&server_addr,
  83                        (u_long *)&ypsd.ypsetdom_binding.ypbind_binding_addr,
  84                        sizeof (server_addr));
  85
  86 /*      strncpy(ypsd.ypsetdom_domain, dom, sizeof ypsd.ypsetdom_domain); */
  87         ypsd.ypsetdom_domain = dom;
  88         *(u_long *)&ypsd.ypsetdom_binding.ypbind_binding_port = port;
  89         ypsd.ypsetdom_vers = YPVERS;
  90
  91         tv.tv_sec = 15;
  92         tv.tv_usec = 0;
  93         sock = RPC_ANYSOCK;
  94         client = clntudp_create(sin, YPBINDPROG, YPBINDVERS, tv, &sock);
  95         if (client == NULL) {
  96                 warnx("can't yp_bind, reason: %s", yperr_string(YPERR_YPBIND));
  97                 return (YPERR_YPBIND);
  98         }
  99         client->cl_auth = authunix_create_default();
 100
 101         r = clnt_call(client, YPBINDPROC_SETDOM,
 102                 xdr_ypbind_setdom, &ypsd, xdr_void, NULL, tv);
 103         if (r) {
 104                 warnx("sorry, cannot ypset for domain %s on host", dom);
 105                 clnt_destroy(client);
 106                 return (YPERR_YPBIND);
 107         }
 108         clnt_destroy(client);
 109         return (0);
 110 }
 111
 112 int
 113 main(int argc, char **argv)
 114 {
 115         struct sockaddr_in sin;
 116         struct hostent *hent;
 117         extern char *optarg;
 118         extern int optind;
 119         char *domainname;
 120         int c;
 121
 122         yp_get_default_domain(&domainname);
 123
 124         bzero(&sin, sizeof sin);
 125         sin.sin_family = AF_INET;
 126         sin.sin_addr.s_addr = htonl(0x7f000001);
 127
 128         while ((c = getopt(argc, argv, "h:d:")) != -1)
 129                 switch (c) {
 130                 case 'd':
 131                         domainname = optarg;
 132                         break;
 133                 case 'h':
 134                         if ((sin.sin_addr.s_addr = inet_addr(optarg)) == -1) {
 135                                 hent = gethostbyname(optarg);
 136                                 if (hent == NULL)
 137                                         errx(1, "host %s unknown", optarg);
 138                                 bcopy(&hent->h_addr_list[0], &sin.sin_addr,
 139                                         sizeof sin.sin_addr);
 140                         }
 141                         break;
 142                 default:
 143                         usage();
 144                 }
 145
 146         if (optind + 1 != argc)
 147                 usage();
 148
 149         if (bind_tohost(&sin, domainname, argv[optind]))
 150                 exit(1);
 151         exit(0);
 152 }