/*
 * $XConsortium: Whead.c,v 1.3 91/01/23 22:14:45 gildea Exp $
 *
 * Copyright 1989 Massachusetts Institute of Technology
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose and without fee is hereby granted, 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 M.I.T. not be used in advertising
 * or publicity pertaining to distribution of the software without specific,
 * written prior permission.  M.I.T. makes no representations about the
 * suitability of this software for any purpose.  It is provided "as is"
 * without express or implied warranty.
 *
 * M.I.T. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL M.I.T.
 * 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.
 *
 * Author:  Keith Packard, MIT X Consortium
 */

#include <X11/Xos.h>
#include <X11/X.h>
#include <X11/Xmd.h>
#include <X11/Xdmcp.h>

int
XdmcpWriteHeader (buffer, header)
    XdmcpBufferPtr  buffer;
    XdmcpHeaderPtr  header;
{
    BYTE    *newData;

    if ((int)buffer->size < 6 + (int)header->length)
    {
	newData = (BYTE *) Xalloc (XDM_MAX_MSGLEN * sizeof (BYTE));
	if (!newData)
	    return FALSE;
	Xfree (buffer->data);
	buffer->data = newData;
	buffer->size = XDM_MAX_MSGLEN;
    }
    buffer->pointer = 0;
    if (!XdmcpWriteCARD16 (buffer, header->version))
	return FALSE;
    if (!XdmcpWriteCARD16 (buffer, header->opcode))
	return FALSE;
    if (!XdmcpWriteCARD16 (buffer, header->length))
	return FALSE;
    return TRUE;
}