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pmap_getport.c revision 1.5 
      1 /*	$NetBSD: pmap_getport.c,v 1.5 1998/02/10 04:54:40 lukem Exp $	*/
      2 
      3 /*
      4  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
      5  * unrestricted use provided that this legend is included on all tape
      6  * media and as a part of the software program in whole or part.  Users
      7  * may copy or modify Sun RPC without charge, but are not authorized
      8  * to license or distribute it to anyone else except as part of a product or
      9  * program developed by the user.
     10  *
     11  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
     12  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
     13  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
     14  *
     15  * Sun RPC is provided with no support and without any obligation on the
     16  * part of Sun Microsystems, Inc. to assist in its use, correction,
     17  * modification or enhancement.
     18  *
     19  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
     20  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
     21  * OR ANY PART THEREOF.
     22  *
     23  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
     24  * or profits or other special, indirect and consequential damages, even if
     25  * Sun has been advised of the possibility of such damages.
     26  *
     27  * Sun Microsystems, Inc.
     28  * 2550 Garcia Avenue
     29  * Mountain View, California  94043
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #if defined(LIBC_SCCS) && !defined(lint)
     34 #if 0
     35 static char *sccsid = "@(#)pmap_getport.c 1.9 87/08/11 Copyr 1984 Sun Micro";
     36 static char *sccsid = "@(#)pmap_getport.c	2.2 88/08/01 4.0 RPCSRC";
     37 #else
     38 __RCSID("$NetBSD: pmap_getport.c,v 1.5 1998/02/10 04:54:40 lukem Exp $");
     39 #endif
     40 #endif
     41 
     42 /*
     43  * pmap_getport.c
     44  * Client interface to pmap rpc service.
     45  *
     46  * Copyright (C) 1984, Sun Microsystems, Inc.
     47  */
     48 
     49 #include "namespace.h"
     50 
     51 #include <sys/types.h>
     52 #include <sys/socket.h>
     53 
     54 #include <net/if.h>
     55 
     56 #include <unistd.h>
     57 
     58 #include <rpc/rpc.h>
     59 #include <rpc/pmap_prot.h>
     60 #include <rpc/pmap_clnt.h>
     61 
     62 #ifdef __weak_alias
     63 __weak_alias(pmap_getport,_pmap_getport);
     64 #endif
     65 
     66 static struct timeval timeout = { 5, 0 };
     67 static struct timeval tottimeout = { 60, 0 };
     68 
     69 /*
     70  * Find the mapped port for program,version.
     71  * Calls the pmap service remotely to do the lookup.
     72  * Returns 0 if no map exists.
     73  */
     74 in_port_t
     75 pmap_getport(address, program, version, protocol)
     76 	struct sockaddr_in *address;
     77 	u_int32_t program;
     78 	u_int32_t version;
     79 	u_int protocol;
     80 {
     81 	in_port_t port = 0;
     82 	int socket = -1;
     83 	CLIENT *client;
     84 	struct pmap parms;
     85 
     86 	address->sin_port = htons(PMAPPORT);
     87 	client = clntudp_bufcreate(address, PMAPPROG,
     88 	    PMAPVERS, timeout, &socket, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
     89 	if (client != (CLIENT *)NULL) {
     90 		parms.pm_prog = program;
     91 		parms.pm_vers = version;
     92 		parms.pm_prot = protocol;
     93 		parms.pm_port = 0;  /* not needed or used */
     94 		if (CLNT_CALL(client, PMAPPROC_GETPORT, xdr_pmap, &parms,
     95 		    xdr_u_int16_t, &port, tottimeout) != RPC_SUCCESS){
     96 			rpc_createerr.cf_stat = RPC_PMAPFAILURE;
     97 			clnt_geterr(client, &rpc_createerr.cf_error);
     98 		} else if (port == 0) {
     99 			rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
    100 		}
    101 		CLNT_DESTROY(client);
    102 	}
    103 	(void)close(socket);
    104 	address->sin_port = 0;
    105 	return (port);
    106 }
    107