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/*
* Copyright (c) 2009, Sun Microsystems, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of Sun Microsystems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* pmap_rmt.c
* Client interface to pmap rpc service.
* remote call and broadcast service
*
* Copyright (C) 1984, Sun Microsystems, Inc.
*/
#include <sys/types.h>
#include <sys/ioctl.h>
#include <poll.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <assert.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <rpc/rpc.h>
#include <rpc/pmap_prot.h>
#include <rpc/pmap_clnt.h>
#include <rpc/pmap_rmt.h>
// For the clnttcp_create function
//#include <clnt_soc.h>
static const struct timeval timeout = { 3, 0 };
/*
* 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(addr, prog, vers, proc, xdrargs, argsp, xdrres, resp, tout,
port_ptr)
struct sockaddr_in *addr;
u_long prog, vers, proc;
xdrproc_t xdrargs, xdrres;
caddr_t argsp, resp;
struct timeval tout;
u_long *port_ptr;
{
int sock = -1;
CLIENT *client;
struct rmtcallargs a;
struct rmtcallres r;
enum clnt_stat stat;
assert(addr != NULL);
assert(port_ptr != NULL);
addr->sin_port = htons(PMAPPORT);
client = clntudp_create(addr, PMAPPROG, PMAPVERS, timeout, &sock);
if (client != NULL) {
a.prog = prog;
a.vers = vers;
a.proc = proc;
a.args_ptr = argsp;
a.xdr_args = xdrargs;
r.port_ptr = port_ptr;
r.results_ptr = resp;
r.xdr_results = xdrres;
stat = CLNT_CALL(client, (rpcproc_t)PMAPPROC_CALLIT,
(xdrproc_t)xdr_rmtcall_args, &a, (xdrproc_t)xdr_rmtcallres,
&r, tout);
CLNT_DESTROY(client);
} else {
stat = RPC_FAILED;
}
addr->sin_port = 0;
return (stat);
}
/*
* XDR remote call arguments
* written for XDR_ENCODE direction only
*/
bool_t
xdr_rmtcall_args(xdrs, cap)
XDR *xdrs;
struct rmtcallargs *cap;
{
u_int lenposition, argposition, position;
assert(xdrs != NULL);
assert(cap != NULL);
if (xdr_u_long(xdrs, &(cap->prog)) &&
xdr_u_long(xdrs, &(cap->vers)) &&
xdr_u_long(xdrs, &(cap->proc))) {
lenposition = XDR_GETPOS(xdrs);
if (! xdr_u_long(xdrs, &(cap->arglen)))
return (FALSE);
argposition = XDR_GETPOS(xdrs);
if (! (*(cap->xdr_args))(xdrs, cap->args_ptr))
return (FALSE);
position = XDR_GETPOS(xdrs);
cap->arglen = (u_long)position - (u_long)argposition;
XDR_SETPOS(xdrs, lenposition);
if (! xdr_u_long(xdrs, &(cap->arglen)))
return (FALSE);
XDR_SETPOS(xdrs, position);
return (TRUE);
}
return (FALSE);
}
/*
* XDR remote call results
* written for XDR_DECODE direction only
*/
bool_t
xdr_rmtcallres(xdrs, crp)
XDR *xdrs;
struct rmtcallres *crp;
{
caddr_t port_ptr;
assert(xdrs != NULL);
assert(crp != NULL);
port_ptr = (caddr_t)(void *)crp->port_ptr;
if (xdr_reference(xdrs, &port_ptr, sizeof (u_long),
(xdrproc_t)xdr_u_long) && xdr_u_long(xdrs, &crp->resultslen)) {
crp->port_ptr = (u_long *)(void *)port_ptr;
return ((*(crp->xdr_results))(xdrs, crp->results_ptr));
}
return (FALSE);
}
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