/*

Copyright 1989, 1998  The Open Group

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.

The above copyright notice and this permission notice shall be included in

all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE

OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of The Open Group shall not be

used in advertising or otherwise to promote the sale, use or other dealings

in this Software without prior written authorization from The Open Group.

 *

 * Author:  Keith Packard, MIT X Consortium

 */

#ifdef HAVE_CONFIG_H

#include <config.h>

#endif

#include <X11/Xos.h>

#include <X11/X.h>

#include <X11/Xmd.h>

#include <X11/Xdmcp.h>

#include <stdlib.h>

int

XdmcpWriteHeader (

    XdmcpBufferPtr  buffer,

    const XdmcpHeaderPtr  header)

{

    BYTE    *newData;

    if ((int)buffer->size < 6 + (int)header->length)

    {

	newData = (BYTE *) malloc(XDM_MAX_MSGLEN * sizeof (BYTE));

	if (!newData)

	    return FALSE;

	free((unsigned long *)(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;

}

int

XdmcpWriteARRAY8 (XdmcpBufferPtr buffer, const ARRAY8Ptr array)

{

    int	i;

    if (!XdmcpWriteCARD16 (buffer, array->length))

	return FALSE;

    for (i = 0; i < (int)array->length; i++)

	if (!XdmcpWriteCARD8 (buffer, array->data[i]))

	    return FALSE;

    return TRUE;

}

int

XdmcpWriteARRAY16 (XdmcpBufferPtr buffer, const ARRAY16Ptr array)

{

    int	i;

    if (!XdmcpWriteCARD8 (buffer, array->length))

	return FALSE;

    for (i = 0; i < (int)array->length; i++)

	if (!XdmcpWriteCARD16 (buffer, array->data[i]))

	    return FALSE;

    return TRUE;

}

int

XdmcpWriteARRAY32 (XdmcpBufferPtr buffer, const ARRAY32Ptr array)

{

    int	i;

    if (!XdmcpWriteCARD8 (buffer, array->length))

	return FALSE;

    for (i = 0; i < (int)array->length; i++)

	if (!XdmcpWriteCARD32 (buffer, array->data[i]))

	    return FALSE;

    return TRUE;

}

int

XdmcpWriteARRAYofARRAY8 (XdmcpBufferPtr buffer, ARRAYofARRAY8Ptr array)

{

    int	i;

    if (!XdmcpWriteCARD8 (buffer, array->length))

	return FALSE;

    for (i = 0; i < (int)array->length; i++)

	if (!XdmcpWriteARRAY8 (buffer, &array->data[i]))

	    return FALSE;

    return TRUE;

}

int

XdmcpWriteCARD8 (

    XdmcpBufferPtr  buffer,

    unsigned	    value)

{

    if (buffer->pointer >= buffer->size)

	return FALSE;

    buffer->data[buffer->pointer++] = (BYTE) value;

    return TRUE;

}

int

XdmcpWriteCARD16 (

    XdmcpBufferPtr  buffer,

    unsigned	    value)

{

    if (!XdmcpWriteCARD8 (buffer, value >> 8))

	return FALSE;

    if (!XdmcpWriteCARD8 (buffer, value & 0xff))

	return FALSE;

    return TRUE;

}

int

XdmcpWriteCARD32 (

    XdmcpBufferPtr  buffer,

    unsigned	    value)

{

    if (!XdmcpWriteCARD8 (buffer, value >> 24))

	return FALSE;

    if (!XdmcpWriteCARD8 (buffer, (value >> 16) & 0xff))

	return FALSE;

    if (!XdmcpWriteCARD8 (buffer, (value >> 8) & 0xff))

	return FALSE;

    if (!XdmcpWriteCARD8 (buffer, value & 0xff))

	return FALSE;

    return TRUE;

}