/*
 * Xephyr - A kdrive X server thats runs in a host X window.
 *          Authored by Matthew Allum <mallum@openedhand.com>
 * 
 * Copyright © 2007 OpenedHand Ltd 
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of OpenedHand Ltd not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission. OpenedHand Ltd makes no
 * representations about the suitability of this software for any purpose.  It
 * is provided "as is" without express or implied warranty.
 *
 * OpenedHand Ltd DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL OpenedHand Ltd BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 *
 * Authors:
 *    Dodji Seketeli <dodji@openedhand.com>
 */

#ifdef HAVE_CONFIG_H
#include <kdrive-config.h>
#endif

#include <X11/Xlibint.h>
#define _HAVE_XALLOC_DECLS
#include "ephyrlog.h"
#include "ephyrhostproxy.h"
#include "hostx.h"

/* byte swap a short */
#define swaps(x, n) { \
    n = ((char *) (x))[0];\
    ((char *) (x))[0] = ((char *) (x))[1];\
    ((char *) (x))[1] = n; }

#define GetXReq(req) \
    WORD64ALIGN ;\
    if ((dpy->bufptr + SIZEOF(xReq)) > dpy->bufmax)\
            _XFlush(dpy);\
    req = (xReq *)(dpy->last_req = dpy->bufptr);\
    dpy->bufptr += SIZEOF(xReq);\
    dpy->request++


Bool
ephyrHostProxyDoForward (pointer a_request_buffer,
                         struct XReply *a_reply,
                         Bool a_do_swap)
{
    Bool is_ok = FALSE ;
    int n=0 ;
    Display *dpy=hostx_get_display () ;
    xReq *in_req = (xReq*) a_request_buffer ;
    xReq *forward_req=NULL ;
    struct XReply reply ;

    EPHYR_RETURN_VAL_IF_FAIL (in_req && dpy, FALSE) ;

    EPHYR_LOG ("enter\n") ;

    if (a_do_swap) {
        swaps (&in_req->length, n) ;
    }
    EPHYR_LOG ("Req {type:%d, data:%d, length:%d}\n",
               in_req->reqType, in_req->data, in_req->length) ;
    GetXReq (forward_req) ;
    memmove (forward_req, in_req, 4) ;

    if (!_XReply (dpy, (xReply*) &reply, 0, FALSE)) {
        EPHYR_LOG_ERROR ("failed to get reply\n") ;
        goto out;
    }
    EPHYR_LOG ("XReply{type:%d, foo:%d, seqnum:%d, length:%d}\n",
               reply.type, reply.foo, reply.sequence_number, reply.length) ;

    if (a_reply) {
        memmove (a_reply, &reply, sizeof (reply)) ;
    }
    is_ok = TRUE ;

out:
    EPHYR_LOG ("leave\n") ;
    return is_ok ;
}