sunrpc/pm_getmaps.c

   1 /*
   2  * pmap_getmap.c
   3  * Client interface to pmap rpc service.
   4  * contains pmap_getmaps, which is only tcp service involved
   5  *
   6  * Copyright (c) 2010, Oracle America, Inc.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions are
  10  * met:
  11  *
  12  *     * Redistributions of source code must retain the above copyright
  13  *       notice, this list of conditions and the following disclaimer.
  14  *     * Redistributions in binary form must reproduce the above
  15  *       copyright notice, this list of conditions and the following
  16  *       disclaimer in the documentation and/or other materials
  17  *       provided with the distribution.
  18  *     * Neither the name of the "Oracle America, Inc." nor the names of its
  19  *       contributors may be used to endorse or promote products derived
  20  *       from this software without specific prior written permission.
  21  *
  22  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  23  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  24  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  25  *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  26  *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  27  *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  29  *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  30  *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  31  *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  32  *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  33  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  34  */
  35
  36 #include <rpc/rpc.h>
  37 #include <rpc/pmap_prot.h>
  38 #include <rpc/pmap_clnt.h>
  39 #include <sys/socket.h>
  40 #include <netdb.h>
  41 #include <stdbool.h>
  42 #include <stdio.h>
  43 #include <errno.h>
  44 #include <libintl.h>
  45 #include <unistd.h>
  46 #include <not-cancel.h>
  47
  48
  49 /*
  50  * Get a copy of the current port maps.
  51  * Calls the pmap service remotely to do get the maps.
  52  */
  53 struct pmaplist *
  54 pmap_getmaps (struct sockaddr_in *address)
  55 {
  56   struct pmaplist *head = (struct pmaplist *) NULL;
  57   struct timeval minutetimeout;
  58   CLIENT *client;
  59   bool closeit = false;
  60
  61   minutetimeout.tv_sec = 60;
  62   minutetimeout.tv_usec = 0;
  63   address->sin_port = htons (PMAPPORT);
  64
  65   /* Don't need a reserved port to get ports from the portmapper.  */
  66   int socket = __get_socket (address);
  67   if (socket != -1)
  68     closeit = true;
  69
  70   client = clnttcp_create (address, PMAPPROG, PMAPVERS, &socket, 50, 500);
  71   if (client != (CLIENT *) NULL)
  72     {
  73       if (CLNT_CALL (client, PMAPPROC_DUMP, (xdrproc_t)xdr_void, NULL,
  74                      (xdrproc_t)xdr_pmaplist, (caddr_t)&head,
  75                      minutetimeout) != RPC_SUCCESS)
  76         {
  77           clnt_perror (client, _("pmap_getmaps.c: rpc problem"));
  78         }
  79       CLNT_DESTROY (client);
  80     }
  81   /* We only need to close the socket here if we opened  it.  */
  82   if (closeit)
  83     close_not_cancel (socket);
  84   address->sin_port = 0;
  85   return head;
  86 }
  87 libc_hidden_nolink (pmap_getmaps, GLIBC_2_0)