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/* -*- c-basic-offset: 8 -*-
rdesktop: A Remote Desktop Protocol client.
Protocol services - RDP5 short form PDU processing
Copyright (C) Matthew Chapman <matthewc.unsw.edu.au> 1999-2008
Copyright 2003-2008 Erik Forsberg <forsberg@cendio.se> for Cendio AB
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "rdesktop.h"
extern size_t g_next_packet;
extern RDPCOMP g_mppc_dict;
void
rdp5_process(STREAM s)
{
uint16 length, count, x, y;
uint8 type, ctype;
size_t next;
uint8 *buf;
uint32 roff, rlen;
struct stream *ns = &(g_mppc_dict.ns);
struct stream *ts;
#if 0
printf("RDP5 data:\n");
hexdump(s->p, s_remaining(s));
#endif
ui_begin_update();
while (!s_check_end(s))
{
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);
}
g_next_packet = next = s_tell(s) + length;
if (ctype & RDP_MPPC_COMPRESSED)
{
in_uint8p(s, buf, length);
if (mppc_expand(buf, length, ctype, &roff, &rlen) == -1)
error("error while decompressing packet\n");
/* allocate memory and copy the uncompressed data into the temporary stream */
s_realloc(ns, rlen);
s_reset(ns);
out_uint8a(ns, (unsigned char *) (g_mppc_dict.hist + roff), rlen);
s_mark_end(ns);
s_seek(ns, 0);
s_push_layer(ns, rdp_hdr, 0);
ts = ns;
}
else
ts = s;
switch (type)
{
case 0: /* update orders */
in_uint16_le(ts, count);
process_orders(ts, count);
break;
case 1: /* update bitmap */
in_uint8s(ts, 2); /* part length */
process_bitmap_updates(ts);
break;
case 2: /* update palette */
in_uint8s(ts, 2); /* uint16 = 2 */
process_palette(ts);
break;
case 3: /* update synchronize */
break;
case 5: /* null pointer */
ui_set_null_cursor();
break;
case 6: /* default pointer */
break;
case 8: /* pointer position */
in_uint16_le(ts, x);
in_uint16_le(ts, y);
ui_move_pointer(x, y);
break;
case 9: /* color pointer */
process_colour_pointer_pdu(ts);
break;
case 10: /* cached pointer */
process_cached_pointer_pdu(ts);
break;
case 11:
process_new_pointer_pdu(ts);
break;
default:
unimpl("RDP5 opcode %d\n", type);
}
s_seek(s, next);
}
ui_end_update();
}
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