pmap_rmt.c

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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 <wintirpc.h>
#include <sys/types.h>
//#include <sys/ioctl.h>
//#include <sys/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);
}