rpc.subproj/pmap_getport.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
  27  * unrestricted use provided that this legend is included on all tape
  28  * media and as a part of the software program in whole or part.  Users
  29  * may copy or modify Sun RPC without charge, but are not authorized
  30  * to license or distribute it to anyone else except as part of a product or
  31  * program developed by the user.
  32  *
  33  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  34  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  35  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  36  *
  37  * Sun RPC is provided with no support and without any obligation on the
  38  * part of Sun Microsystems, Inc. to assist in its use, correction,
  39  * modification or enhancement.
  40  *
  41  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  42  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  43  * OR ANY PART THEREOF.
  44  *
  45  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  46  * or profits or other special, indirect and consequential damages, even if
  47  * Sun has been advised of the possibility of such damages.
  48  *
  49  * Sun Microsystems, Inc.
  50  * 2550 Garcia Avenue
  51  * Mountain View, California  94043
  52  */
  53
  54 #if defined(LIBC_SCCS) && !defined(lint)
  55 /*static char *sccsid = "from: @(#)pmap_getport.c 1.9 87/08/11 Copyr 1984 Sun Micro";*/
  56 /*static char *sccsid = "from: @(#)pmap_getport.c       2.2 88/08/01 4.0 RPCSRC";*/
  57 static char *rcsid = "$Id: pmap_getport.c,v 1.3 2002/02/19 20:36:24 epeyton Exp $";
  58 #endif
  59
  60 /*
  61  * pmap_getport.c
  62  * Client interface to pmap rpc service.
  63  *
  64  * Copyright (C) 1984, Sun Microsystems, Inc.
  65  */
  66
  67 #include <unistd.h>
  68 #include <rpc/rpc.h>
  69 #include <rpc/pmap_prot.h>
  70 #include <rpc/pmap_clnt.h>
  71 #include <sys/socket.h>
  72 #include <net/if.h>
  73
  74 static struct timeval timeout = { 5, 0 };
  75 static struct timeval tottimeout = { 60, 0 };
  76
  77 /*
  78  * Find the mapped port for program,version.
  79  * Calls the pmap service remotely to do the lookup.
  80  * Returns 0 if no map exists.
  81  */
  82 u_short
  83 pmap_getport(address, program, version, protocol)
  84         struct sockaddr_in *address;
  85         u_long program;
  86         u_long version;
  87         u_int protocol;
  88 {
  89         u_short port = 0;
  90         int socket = -1;
  91         register CLIENT *client;
  92         struct pmap parms;
  93
  94         address->sin_port = htons(PMAPPORT);
  95         client = clntudp_bufcreate(address, PMAPPROG,
  96             PMAPVERS, timeout, &socket, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
  97         if (client != (CLIENT *)NULL) {
  98                 parms.pm_prog = program;
  99                 parms.pm_vers = version;
 100                 parms.pm_prot = protocol;
 101                 parms.pm_port = 0;  /* not needed or used */
 102                 if (CLNT_CALL(client, PMAPPROC_GETPORT, xdr_pmap, &parms,
 103                     xdr_u_short, &port, tottimeout) != RPC_SUCCESS){
 104                         rpc_createerr.cf_stat = RPC_PMAPFAILURE;
 105                         clnt_geterr(client, &rpc_createerr.cf_error);
 106                 } else if (port == 0) {
 107                         rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
 108                 }
 109                 CLNT_DESTROY(client);
 110         }
 111         (void)close(socket);
 112         address->sin_port = 0;
 113         return (port);
 114 }