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pmap_getport.c revision 1.1 
      1 /*
      2  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
      3  * unrestricted use provided that this legend is included on all tape
      4  * media and as a part of the software program in whole or part.  Users
      5  * may copy or modify Sun RPC without charge, but are not authorized
      6  * to license or distribute it to anyone else except as part of a product or
      7  * program developed by the user.
      8  *
      9  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
     10  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
     11  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
     12  *
     13  * Sun RPC is provided with no support and without any obligation on the
     14  * part of Sun Microsystems, Inc. to assist in its use, correction,
     15  * modification or enhancement.
     16  *
     17  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
     18  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
     19  * OR ANY PART THEREOF.
     20  *
     21  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
     22  * or profits or other special, indirect and consequential damages, even if
     23  * Sun has been advised of the possibility of such damages.
     24  *
     25  * Sun Microsystems, Inc.
     26  * 2550 Garcia Avenue
     27  * Mountain View, California  94043
     28  */
     29 
     30 #if defined(LIBC_SCCS) && !defined(lint)
     31 /*static char *sccsid = "from: @(#)pmap_getport.c 1.9 87/08/11 Copyr 1984 Sun Micro";*/
     32 /*static char *sccsid = "from: @(#)pmap_getport.c	2.2 88/08/01 4.0 RPCSRC";*/
     33 static char *rcsid = "$Id: pmap_getport.c,v 1.1 1993/10/07 07:29:59 cgd Exp $";
     34 #endif
     35 
     36 /*
     37  * pmap_getport.c
     38  * Client interface to pmap rpc service.
     39  *
     40  * Copyright (C) 1984, Sun Microsystems, Inc.
     41  */
     42 
     43 #include <rpc/rpc.h>
     44 #include <rpc/pmap_prot.h>
     45 #include <rpc/pmap_clnt.h>
     46 #include <sys/socket.h>
     47 #include <net/if.h>
     48 
     49 static struct timeval timeout = { 5, 0 };
     50 static struct timeval tottimeout = { 60, 0 };
     51 
     52 /*
     53  * Find the mapped port for program,version.
     54  * Calls the pmap service remotely to do the lookup.
     55  * Returns 0 if no map exists.
     56  */
     57 u_short
     58 pmap_getport(address, program, version, protocol)
     59 	struct sockaddr_in *address;
     60 	u_long program;
     61 	u_long version;
     62 	u_int protocol;
     63 {
     64 	u_short port = 0;
     65 	int socket = -1;
     66 	register CLIENT *client;
     67 	struct pmap parms;
     68 
     69 	address->sin_port = htons(PMAPPORT);
     70 	client = clntudp_bufcreate(address, PMAPPROG,
     71 	    PMAPVERS, timeout, &socket, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
     72 	if (client != (CLIENT *)NULL) {
     73 		parms.pm_prog = program;
     74 		parms.pm_vers = version;
     75 		parms.pm_prot = protocol;
     76 		parms.pm_port = 0;  /* not needed or used */
     77 		if (CLNT_CALL(client, PMAPPROC_GETPORT, xdr_pmap, &parms,
     78 		    xdr_u_short, &port, tottimeout) != RPC_SUCCESS){
     79 			rpc_createerr.cf_stat = RPC_PMAPFAILURE;
     80 			clnt_geterr(client, &rpc_createerr.cf_error);
     81 		} else if (port == 0) {
     82 			rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
     83 		}
     84 		CLNT_DESTROY(client);
     85 	}
     86 	(void)close(socket);
     87 	address->sin_port = 0;
     88 	return (port);
     89 }
     90