pmap_clnt.c revision 9ff75ade7518b5023d90c864a4c081dba319589e
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Portions of this source code were derived from Berkeley
* 4.3 BSD under license from the Regents of the University of
* California.
*/
#ifdef PORTMAP
/*
* interface to pmap rpc service.
*/
#include "mt.h"
#include "rpc_mt.h"
#include <rpc/rpc.h>
#include <rpc/nettype.h>
#include <netdir.h>
#include <rpc/pmap_prot.h>
#include <rpc/pmap_clnt.h>
#include <rpc/pmap_rmt.h>
#include <string.h>
#include <syslog.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <unistd.h>
int use_portmapper = 0;
static const struct timeval timeout = { 5, 0 };
static const struct timeval tottimeout = { 60, 0 };
static const struct timeval rmttimeout = { 3, 0 };
/*
* Set a mapping between program, version and port.
* Calls the pmap service remotely to do the mapping.
*/
bool_t
pmap_set(rpcprog_t program, rpcvers_t version, rpcprot_t protocol,
ushort_t port)
{
bool_t rslt;
struct netbuf *na;
struct netconfig *nconf;
char buf[32];
if ((protocol != IPPROTO_UDP) && (protocol != IPPROTO_TCP))
return (FALSE);
nconf = __rpc_getconfip(protocol == IPPROTO_UDP ? "udp" : "tcp");
if (!nconf)
return (FALSE);
(void) sprintf(buf, "0.0.0.0.%d.%d", port >> 8 & 0xff, port & 0xff);
na = uaddr2taddr(nconf, buf);
if (!na) {
freenetconfigent(nconf);
return (FALSE);
}
rslt = rpcb_set(program, version, nconf, na);
netdir_free((char *)na, ND_ADDR);
freenetconfigent(nconf);
return (rslt);
}
/*
* Remove the mapping between program, version and port.
* Calls the pmap service remotely to do the un-mapping.
*/
bool_t
pmap_unset(rpcprog_t program, rpcvers_t version)
{
struct netconfig *nconf;
bool_t udp_rslt = FALSE;
bool_t tcp_rslt = FALSE;
nconf = __rpc_getconfip("udp");
if (nconf) {
udp_rslt = rpcb_unset(program, version, nconf);
freenetconfigent(nconf);
}
nconf = __rpc_getconfip("tcp");
if (nconf) {
tcp_rslt = rpcb_unset(program, version, nconf);
freenetconfigent(nconf);
}
/*
* XXX: The call may still succeed even if only one of the
* calls succeeded. This was the best that could be
* done for backward compatibility.
*/
return (tcp_rslt || udp_rslt);
}
/*
* Find the mapped port for program, version.
* Calls the pmap service remotely to do the lookup.
* Returns 0 if no map exists.
*
* XXX: It talks only to the portmapper and not to the rpcbind
* service. There may be implementations out there which do not
* run portmapper as a part of rpcbind.
*/
ushort_t
pmap_getport(struct sockaddr_in *address, rpcprog_t program,
rpcvers_t version, rpcprot_t protocol)
{
ushort_t port = 0;
int fd = RPC_ANYFD;
CLIENT *client;
struct pmap parms;
address->sin_port = htons(PMAPPORT);
client = clntudp_bufcreate(address, PMAPPROG, PMAPVERS, timeout,
&fd, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
if (client != NULL) {
parms.pm_prog = program;
parms.pm_vers = version;
parms.pm_prot = protocol;
parms.pm_port = 0; /* not needed or used */
if (CLNT_CALL(client, PMAPPROC_GETPORT, (xdrproc_t)xdr_pmap,
(caddr_t)&parms, (xdrproc_t)xdr_u_short,
(caddr_t)&port, tottimeout) != RPC_SUCCESS) {
rpc_createerr.cf_stat = RPC_PMAPFAILURE;
clnt_geterr(client, &rpc_createerr.cf_error);
} else if (port == 0) {
rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
}
CLNT_DESTROY(client);
}
address->sin_port = 0;
return (port);
}
/*
* Get a copy of the current port maps.
* Calls the pmap service remotely to do get the maps.
*/
struct pmaplist *
pmap_getmaps(struct sockaddr_in *address)
{
pmaplist_ptr head = NULL;
int fd = RPC_ANYFD;
struct timeval minutetimeout;
CLIENT *client;
minutetimeout.tv_sec = 60;
minutetimeout.tv_usec = 0;
address->sin_port = htons(PMAPPORT);
client = clnttcp_create(address, PMAPPROG, PMAPVERS, &fd, 50, 500);
if (client != NULL) {
if (CLNT_CALL(client, PMAPPROC_DUMP, (xdrproc_t)xdr_void,
NULL, (xdrproc_t)xdr_pmaplist_ptr,
(caddr_t)&head, minutetimeout) != RPC_SUCCESS) {
(void) syslog(LOG_ERR, "%s",
clnt_sperror(client, "pmap_getmaps rpc problem"));
}
CLNT_DESTROY(client);
}
address->sin_port = 0;
return ((struct pmaplist *)head);
}
/*
* pmapper remote-call-service interface.
* This routine is used to call the pmapper remote call service
* which will look up a service program in the port maps, and then
* remotely call that routine with the given parameters. This allows
* programs to do a lookup and call in one step.
*/
enum clnt_stat
pmap_rmtcall(struct sockaddr_in *addr, rpcprog_t prog, rpcvers_t vers,
rpcproc_t proc, xdrproc_t xdrargs, caddr_t argsp, xdrproc_t xdrres,
caddr_t resp, struct timeval tout, rpcport_t *port_ptr)
{
int fd = RPC_ANYFD;
CLIENT *client;
struct p_rmtcallargs a;
struct p_rmtcallres r;
enum clnt_stat stat;
short tmp = addr->sin_port;
addr->sin_port = htons(PMAPPORT);
client = clntudp_create(addr, PMAPPROG, PMAPVERS, rmttimeout, &fd);
if (client != NULL) {
a.prog = prog;
a.vers = vers;
a.proc = proc;
a.args.args_val = argsp;
a.xdr_args = xdrargs;
r.res.res_val = resp;
r.xdr_res = xdrres;
stat = CLNT_CALL(client, PMAPPROC_CALLIT,
(xdrproc_t)xdr_rmtcallargs,
(caddr_t)&a, (xdrproc_t)xdr_rmtcallres,
(caddr_t)&r, tout);
CLNT_DESTROY(client);
} else {
stat = RPC_FAILED;
}
addr->sin_port = tmp;
*port_ptr = r.port;
return (stat);
}
#endif /* PORTMAP */