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/* -*- c-basic-offset: 8 -*-
rdesktop: A Remote Desktop Protocol client.
Protocol services - Clipboard functions
Copyright (C) Erik Forsberg <forsberg@cendio.se> 2003
Copyright (C) Matthew Chapman 2003-2007
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "rdesktop.h"
#define CLIPRDR_CONNECT 1
#define CLIPRDR_FORMAT_ANNOUNCE 2
#define CLIPRDR_FORMAT_ACK 3
#define CLIPRDR_DATA_REQUEST 4
#define CLIPRDR_DATA_RESPONSE 5
#define CLIPRDR_REQUEST 0
#define CLIPRDR_RESPONSE 1
#define CLIPRDR_ERROR 2
static VCHANNEL *cliprdr_channel;
static uint8 *last_formats = NULL;
static uint32 last_formats_length = 0;
static void
cliprdr_send_packet(uint16 type, uint16 status, uint8 * data, uint32 length)
{
STREAM s;
DEBUG_CLIPBOARD(("CLIPRDR send: type=%d, status=%d, length=%d\n", type, status, length));
s = channel_init(cliprdr_channel, length + 12);
out_uint16_le(s, type);
out_uint16_le(s, status);
out_uint32_le(s, length);
out_uint8p(s, data, length);
out_uint32(s, 0); /* pad? */
s_mark_end(s);
channel_send(s, cliprdr_channel);
}
/* Helper which announces our readiness to supply clipboard data
in a single format (such as CF_TEXT) to the RDP side.
To announce more than one format at a time, use
cliprdr_send_native_format_announce.
*/
void
cliprdr_send_simple_native_format_announce(uint32 format)
{
uint8 buffer[36];
DEBUG_CLIPBOARD(("cliprdr_send_simple_native_format_announce\n"));
buf_out_uint32(buffer, format);
memset(buffer + 4, 0, sizeof(buffer) - 4); /* description */
cliprdr_send_native_format_announce(buffer, sizeof(buffer));
}
/* Announces our readiness to supply clipboard data in multiple
formats, each denoted by a 36-byte format descriptor of
[ uint32 format + 32-byte description ].
*/
void
cliprdr_send_native_format_announce(uint8 * formats_data, uint32 formats_data_length)
{
DEBUG_CLIPBOARD(("cliprdr_send_native_format_announce\n"));
cliprdr_send_packet(CLIPRDR_FORMAT_ANNOUNCE, CLIPRDR_REQUEST, formats_data,
formats_data_length);
if (formats_data != last_formats)
{
if (last_formats)
xfree(last_formats);
last_formats = xmalloc(formats_data_length);
memcpy(last_formats, formats_data, formats_data_length);
last_formats_length = formats_data_length;
}
}
void
cliprdr_send_data_request(uint32 format)
{
uint8 buffer[4];
DEBUG_CLIPBOARD(("cliprdr_send_data_request\n"));
buf_out_uint32(buffer, format);
cliprdr_send_packet(CLIPRDR_DATA_REQUEST, CLIPRDR_REQUEST, buffer, sizeof(buffer));
}
void
cliprdr_send_data(uint8 * data, uint32 length)
{
DEBUG_CLIPBOARD(("cliprdr_send_data\n"));
cliprdr_send_packet(CLIPRDR_DATA_RESPONSE, CLIPRDR_RESPONSE, data, length);
}
static void
cliprdr_process(STREAM s)
{
uint16 type, status;
uint32 length, format;
uint8 *data;
in_uint16_le(s, type);
in_uint16_le(s, status);
in_uint32_le(s, length);
data = s->p;
DEBUG_CLIPBOARD(("CLIPRDR recv: type=%d, status=%d, length=%d\n", type, status, length));
if (status == CLIPRDR_ERROR)
{
switch (type)
{
case CLIPRDR_FORMAT_ACK:
/* FIXME: We seem to get this when we send an announce while the server is
still processing a paste. Try sending another announce. */
cliprdr_send_native_format_announce(last_formats,
last_formats_length);
break;
case CLIPRDR_DATA_RESPONSE:
ui_clip_request_failed();
break;
default:
DEBUG_CLIPBOARD(("CLIPRDR error (type=%d)\n", type));
}
return;
}
switch (type)
{
case CLIPRDR_CONNECT:
ui_clip_sync();
break;
case CLIPRDR_FORMAT_ANNOUNCE:
ui_clip_format_announce(data, length);
cliprdr_send_packet(CLIPRDR_FORMAT_ACK, CLIPRDR_RESPONSE, NULL, 0);
return;
case CLIPRDR_FORMAT_ACK:
break;
case CLIPRDR_DATA_REQUEST:
in_uint32_le(s, format);
ui_clip_request_data(format);
break;
case CLIPRDR_DATA_RESPONSE:
ui_clip_handle_data(data, length);
break;
case 7: /* TODO: W2K3 SP1 sends this on connect with a value of 1 */
break;
default:
unimpl("CLIPRDR packet type %d\n", type);
}
}
void
cliprdr_set_mode(const char *optarg)
{
ui_clip_set_mode(optarg);
}
RD_BOOL
cliprdr_init(void)
{
cliprdr_channel =
channel_register("cliprdr",
CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP |
CHANNEL_OPTION_COMPRESS_RDP | CHANNEL_OPTION_SHOW_PROTOCOL,
cliprdr_process);
return (cliprdr_channel != NULL);
}
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