/* Process data PDU */
static void
process_data_pdu(STREAM s)
{
uint8 data_pdu_type;
in_uint8s(s, 8); /* shareid, pad, streamid, length */
in_uint8(s, data_pdu_type);
in_uint8s(s, 3); /* compress_type, compress_len */
switch (data_pdu_type)
{
case RDP_DATA_PDU_UPDATE:
process_update_pdu(s);
break;
case RDP_DATA_PDU_POINTER:
process_pointer_pdu(s);
break;
case RDP_DATA_PDU_BELL:
ui_bell();
break;
case RDP_DATA_PDU_LOGON:
DEBUG(("Received Logon PDU\n"));
/* User logged on */
break;
case RDP_DATA_PDU_DISCONNECT:
/* Normally received when user logs out or disconnects from a
console session on Windows XP and 2003 Server */
DEBUG(("Received disconnect PDU\n"));
break;
default:
unimpl("data PDU %d\n", data_pdu_type);
}
}
/* Process data PDU */
static RD_BOOL
process_data_pdu(STREAM s, uint32 * ext_disc_reason)
{
uint8 data_pdu_type;
uint8 ctype;
uint16 clen;
uint32 len;
uint32 roff, rlen;
struct stream *ns = &(g_mppc_dict.ns);
in_uint8s(s, 6); /* shareid, pad, streamid */
in_uint16_le(s, len);
in_uint8(s, data_pdu_type);
in_uint8(s, ctype);
in_uint16_le(s, clen);
clen -= 18;
if (ctype & RDP_MPPC_COMPRESSED)
{
if (len > RDP_MPPC_DICT_SIZE)
error("error decompressed packet size exceeds max\n");
if (mppc_expand(s->p, clen, ctype, &roff, &rlen) == -1)
error("error while decompressing packet\n");
/* len -= 18; */
/* allocate memory and copy the uncompressed data into the temporary stream */
ns->data = (uint8 *) xrealloc(ns->data, rlen);
memcpy((ns->data), (unsigned char *) (g_mppc_dict.hist + roff), rlen);
ns->size = rlen;
ns->end = (ns->data + ns->size);
ns->p = ns->data;
ns->rdp_hdr = ns->p;
s = ns;
}
switch (data_pdu_type)
{
case RDP_DATA_PDU_UPDATE:
process_update_pdu(s);
break;
case RDP_DATA_PDU_CONTROL:
DEBUG(("Received Control PDU\n"));
break;
case RDP_DATA_PDU_SYNCHRONISE:
DEBUG(("Received Sync PDU\n"));
break;
case RDP_DATA_PDU_POINTER:
process_pointer_pdu(s);
break;
case RDP_DATA_PDU_BELL:
ui_bell();
break;
case RDP_DATA_PDU_LOGON:
DEBUG(("Received Logon PDU\n"));
/* User logged on */
process_pdu_logon(s);
break;
case RDP_DATA_PDU_DISCONNECT:
process_disconnect_pdu(s, ext_disc_reason);
/* We used to return true and disconnect immediately here, but
* Windows Vista sends a disconnect PDU with reason 0 when
* reconnecting to a disconnected session, and MSTSC doesn't
* drop the connection. I think we should just save the status.
*/
break;
case RDP_DATA_PDU_AUTORECONNECT_STATUS:
warning("Automatic reconnect using cookie, failed.\n");
break;
default:
unimpl("data PDU %d\n", data_pdu_type);
}
return False;
}
/* Process data PDU */
static BOOL
process_data_pdu(STREAM s, uint32 * ext_disc_reason)
{
uint8 data_pdu_type;
uint8 ctype;
uint16 clen;
uint32 len;
uint32 roff, rlen;
struct stream *ns = &(g_mppc_dict.ns);
in_uint8s(s, 6); /* shareid, pad, streamid */
in_uint16(s, len);
in_uint8(s, data_pdu_type);
in_uint8(s, ctype);
in_uint16(s, clen);
clen -= 18;
if (ctype & RDP_MPPC_COMPRESSED)
{
if (len > RDP_MPPC_DICT_SIZE)
error("error decompressed packet size exceeds max\n");
if (mppc_expand(s->p, clen, ctype, &roff, &rlen) == -1)
error("error while decompressing packet\n");
/* len -= 18; */
/* allocate memory and copy the uncompressed data into the temporary stream */
ns->data = (uint8 *) xrealloc(ns->data, rlen);
memcpy((ns->data), (unsigned char *) (g_mppc_dict.hist + roff), rlen);
ns->size = rlen;
ns->end = (ns->data + ns->size);
ns->p = ns->data;
ns->rdp_hdr = ns->p;
s = ns;
}
switch (data_pdu_type)
{
case RDP_DATA_PDU_UPDATE:
process_update_pdu(s);
break;
case RDP_DATA_PDU_CONTROL:
DEBUG(("Received Control PDU\n"));
break;
case RDP_DATA_PDU_SYNCHRONISE:
DEBUG(("Received Sync PDU\n"));
break;
case RDP_DATA_PDU_POINTER:
process_pointer_pdu(s);
break;
case RDP_DATA_PDU_BELL:
ui_bell();
break;
case RDP_DATA_PDU_LOGON:
DEBUG(("Received Logon PDU\n"));
/* User logged on */
break;
case RDP_DATA_PDU_DISCONNECT:
process_disconnect_pdu(s, ext_disc_reason);
return True;
default:
unimpl("data PDU %d\n", data_pdu_type);
}
return False;
}
