/*      $OpenBSD: pmap_clnt.c,v 1.19 2015/09/13 15:36:56 guenther Exp $ */

/*
 * Copyright (c) 2010, Oracle America, Inc.
 *
 * 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 the "Oracle America, 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_clnt.c
 * Client interface to pmap rpc service.
 */

#include <unistd.h>
#include <errno.h>
#include <rpc/rpc.h>
#include <rpc/pmap_prot.h>
#include <rpc/pmap_clnt.h>

static struct timeval timeout = { 5, 0 };
static struct timeval tottimeout = { 60, 0 };

/*
 * Set a mapping between program,version and port.
 * Calls the pmap service remotely to do the mapping.
 */
bool_t
pmap_set(u_long program, u_long version, u_int protocol, int iport)
{
        struct sockaddr_in myaddress;
        int sock = -1;
        CLIENT *client;
        struct pmap parms;
        bool_t rslt;
        int save_errno;
        u_short port = iport;

        if (get_myaddress(&myaddress) != 0)
                return (FALSE);
        myaddress.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
        client = clntudp_bufcreate(&myaddress, PMAPPROG, PMAPVERS,
            timeout, &sock, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
        if (client == NULL)
                return (FALSE);
        parms.pm_prog = program;
        parms.pm_vers = version;
        parms.pm_prot = protocol;
        parms.pm_port = port;
        if (CLNT_CALL(client, PMAPPROC_SET, xdr_pmap, &parms, xdr_bool, &rslt,
            tottimeout) != RPC_SUCCESS) {
                save_errno = errno;
                rslt = FALSE;
        } else
                save_errno = errno;
        CLNT_DESTROY(client);
        errno = save_errno;
        return (rslt);
}
DEF_WEAK(pmap_set);

/*
 * Remove the mapping between program,version and port.
 * Calls the pmap service remotely to do the un-mapping.
 */
bool_t
pmap_unset(u_long program, u_long version)
{
        struct sockaddr_in myaddress;
        int sock = -1;
        CLIENT *client;
        struct pmap parms;
        bool_t rslt;

        if (get_myaddress(&myaddress) != 0)
                return (FALSE);
        myaddress.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
        client = clntudp_bufcreate(&myaddress, PMAPPROG, PMAPVERS,
            timeout, &sock, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
        if (client == NULL)
                return (FALSE);
        parms.pm_prog = program;
        parms.pm_vers = version;
        parms.pm_port = parms.pm_prot = 0;
        CLNT_CALL(client, PMAPPROC_UNSET, xdr_pmap, &parms, xdr_bool, &rslt,
            tottimeout);
        CLNT_DESTROY(client);
        return (rslt);
}
DEF_WEAK(pmap_unset);