reactos/modules/rosapps/applications/net/tsclient/rdesktop/rdp5.c

129 lines
3 KiB
C

/* -*- c-basic-offset: 8 -*-
rdesktop: A Remote Desktop Protocol client.
Protocol services - RDP5 short form PDU processing
Copyright (C) Matthew Chapman 1999-2005
Copyright (C) Erik Forsberg 2003
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.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "rdesktop.h"
BOOL
rdp5_process(RDPCLIENT * This, STREAM s)
{
uint16 length, count, x, y;
uint8 type, ctype;
uint8 *next;
uint32 roff, rlen;
struct stream *ns = &(This->mppc_dict.ns);
struct stream *ts;
#if 0
printf("RDP5 data:\n");
hexdump(s->p, s->end - s->p);
#endif
ui_begin_update(This);
while (s->p < s->end)
{
in_uint8(s, type);
if (type & RDP5_COMPRESSED)
{
in_uint8(s, ctype);
in_uint16_le(s, length);
type ^= RDP5_COMPRESSED;
}
else
{
ctype = 0;
in_uint16_le(s, length);
}
This->next_packet = next = s->p + length;
if (ctype & RDP_MPPC_COMPRESSED)
{
void * p;
if (mppc_expand(This, s->p, length, ctype, &roff, &rlen) == -1)
error("error while decompressing packet\n");
/* allocate memory and copy the uncompressed data into the temporary stream */
p = realloc(ns->data, rlen);
if(p == NULL)
{
This->disconnect_reason = 262;
return False;
}
ns->data = (uint8 *) p;
memcpy((ns->data), (unsigned char *) (This->mppc_dict.hist + roff), rlen);
ns->size = rlen;
ns->end = (ns->data + ns->size);
ns->p = ns->data;
ns->rdp_hdr = ns->p;
ts = ns;
}
else
ts = s;
switch (type)
{
case 0: /* update orders */
in_uint16_le(ts, count);
process_orders(This, ts, count);
break;
case 1: /* update bitmap */
in_uint8s(ts, 2); /* part length */
process_bitmap_updates(This, ts);
break;
case 2: /* update palette */
in_uint8s(ts, 2); /* uint16 = 2 */
process_palette(This, ts);
break;
case 3: /* update synchronize */
break;
case 5: /* null pointer */
ui_set_null_cursor(This);
break;
case 6: /* default pointer */
break;
case 8: /* pointer position */
in_uint16_le(ts, x);
in_uint16_le(ts, y);
if (s_check(ts))
ui_move_pointer(This, x, y);
break;
case 9: /* color pointer */
process_colour_pointer_pdu(This, ts);
break;
case 10: /* cached pointer */
process_cached_pointer_pdu(This, ts);
break;
default:
unimpl("RDP5 opcode %d\n", type);
}
s->p = next;
}
ui_end_update(This);
return True;
}