sunrpc/pm_getport.c

   1 /* @(#)pmap_getport.c   2.2 88/08/01 4.0 RPCSRC */
   2 /*
   3  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   4  * unrestricted use provided that this legend is included on all tape
   5  * media and as a part of the software program in whole or part.  Users
   6  * may copy or modify Sun RPC without charge, but are not authorized
   7  * to license or distribute it to anyone else except as part of a product or
   8  * program developed by the user.
   9  *
  10  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  11  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  12  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  13  *
  14  * Sun RPC is provided with no support and without any obligation on the
  15  * part of Sun Microsystems, Inc. to assist in its use, correction,
  16  * modification or enhancement.
  17  *
  18  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  19  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  20  * OR ANY PART THEREOF.
  21  *
  22  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  23  * or profits or other special, indirect and consequential damages, even if
  24  * Sun has been advised of the possibility of such damages.
  25  *
  26  * Sun Microsystems, Inc.
  27  * 2550 Garcia Avenue
  28  * Mountain View, California  94043
  29  */
  30 #if !defined(lint) && defined(SCCSIDS)
  31 static char sccsid[] = "@(#)pmap_getport.c 1.9 87/08/11 Copyr 1984 Sun Micro";
  32 #endif
  33
  34 /*
  35  * pmap_getport.c
  36  * Client interface to pmap rpc service.
  37  *
  38  * Copyright (C) 1984, Sun Microsystems, Inc.
  39  */
  40
  41 #include <rpc/rpc.h>
  42 #include <rpc/pmap_prot.h>
  43 #include <rpc/pmap_clnt.h>
  44 #include <sys/socket.h>
  45
  46 #if 0   /* these seem to be gratuitous --roland@gnu */
  47 #include <net/if.h>
  48 #endif
  49
  50 static struct timeval timeout = { 5, 0 };
  51 static struct timeval tottimeout = { 60, 0 };
  52
  53 /*
  54  * Find the mapped port for program,version.
  55  * Calls the pmap service remotely to do the lookup.
  56  * Returns 0 if no map exists.
  57  */
  58 u_short
  59 pmap_getport(address, program, version, protocol)
  60         struct sockaddr_in *address;
  61         u_long program;
  62         u_long version;
  63         u_int protocol;
  64 {
  65         u_short port = 0;
  66         int socket = -1;
  67         register CLIENT *client;
  68         struct pmap parms;
  69
  70         address->sin_port = htons(PMAPPORT);
  71         client = clntudp_bufcreate(address, PMAPPROG,
  72             PMAPVERS, timeout, &socket, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
  73         if (client != (CLIENT *)NULL) {
  74                 parms.pm_prog = program;
  75                 parms.pm_vers = version;
  76                 parms.pm_prot = protocol;
  77                 parms.pm_port = 0;  /* not needed or used */
  78                 if (CLNT_CALL(client, PMAPPROC_GETPORT, xdr_pmap, &parms,
  79                     xdr_u_short, &port, tottimeout) != RPC_SUCCESS){
  80                         rpc_createerr.cf_stat = RPC_PMAPFAILURE;
  81                         clnt_geterr(client, &rpc_createerr.cf_error);
  82                 } else if (port == 0) {
  83                         rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
  84                 }
  85                 CLNT_DESTROY(client);
  86         }
  87         (void)close(socket);
  88         address->sin_port = 0;
  89         return (port);
  90 }