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xrdp-proprietary
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xrdp-proprietary/xrdp/xrdp_rdp.c

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/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2004
rdp layer
*/
#include "xrdp.h"
char unknown1[172] =
{ 0xff, 0x02, 0xb6, 0x00, 0x28, 0x00, 0x00, 0x00,
0x27, 0x00, 0x27, 0x00, 0x03, 0x00, 0x04, 0x00,
0x00, 0x00, 0x26, 0x00, 0x01, 0x00, 0x1e, 0x00,
0x02, 0x00, 0x1f, 0x00, 0x03, 0x00, 0x1d, 0x00,
0x04, 0x00, 0x27, 0x00, 0x05, 0x00, 0x0b, 0x00,
0x06, 0x00, 0x28, 0x00, 0x08, 0x00, 0x21, 0x00,
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0x0b, 0x00, 0x25, 0x00, 0x0c, 0x00, 0x24, 0x00,
0x0d, 0x00, 0x23, 0x00, 0x0e, 0x00, 0x19, 0x00,
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0x11, 0x00, 0x1c, 0x00, 0x12, 0x00, 0x1b, 0x00,
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0x21, 0x00, 0x0a, 0x00, 0x22, 0x00, 0x06, 0x00,
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0x29, 0x00, 0x01, 0x00, 0x2a, 0x00, 0x05, 0x00,
0x2b, 0x00, 0x2a, 0x00 };
/*****************************************************************************/
struct xrdp_rdp* xrdp_rdp_create(struct xrdp_process* owner)
{
struct xrdp_rdp* self;
self = (struct xrdp_rdp*)g_malloc(sizeof(struct xrdp_rdp), 1);
self->pro_layer = owner;
self->share_id = 66538;
self->sec_layer = xrdp_sec_create(self);
return self;
}
/*****************************************************************************/
void xrdp_rdp_delete(struct xrdp_rdp* self)
{
if (self == 0)
return;
xrdp_sec_delete(self->sec_layer);
g_free(self);
}
/*****************************************************************************/
int xrdp_rdp_init(struct xrdp_rdp* self, struct stream* s)
{
if (xrdp_sec_init(self->sec_layer, s) != 0)
return 1;
s_push_layer(s, rdp_hdr, 6);
return 0;
}
/*****************************************************************************/
int xrdp_rdp_init_data(struct xrdp_rdp* self, struct stream* s)
{
if (xrdp_sec_init(self->sec_layer, s) != 0)
return 1;
s_push_layer(s, rdp_hdr, 18);
return 0;
}
/*****************************************************************************/
int xrdp_rdp_recv(struct xrdp_rdp* self, struct stream* s, int* code)
{
int error;
int len;
int pdu_code;
int chan;
if (s->next_packet == 0 || s->next_packet >= s->end)
{
chan = 0;
error = xrdp_sec_recv(self->sec_layer, s, &chan);
if (error == -1) /* special code for send demand active */
{
s->next_packet = 0;
*code = -1;
return 0;
}
if (chan != MCS_GLOBAL_CHANNEL && chan > 0)
{
s->next_packet = 0;
*code = 0;
return 0;
}
if (error != 0)
return 1;
s->next_packet = s->p;
}
else
s->p = s->next_packet;
in_uint16_le(s, len);
if (len == 0x8000)
{
s->next_packet += 8;
*code = 0;
return 0;
}
in_uint16_le(s, pdu_code);
*code = pdu_code & 0xf;
in_uint8s(s, 2); /* mcs user id */
s->next_packet += len;
return 0;
}
/*****************************************************************************/
int xrdp_rdp_send(struct xrdp_rdp* self, struct stream* s, int pdu_type)
{
int len;
DEBUG(("in xrdp_rdp_send\n\r"));
s_pop_layer(s, rdp_hdr);
len = s->end - s->p;
out_uint16_le(s, len);
out_uint16_le(s, 0x10 | pdu_type);
out_uint16_le(s, self->mcs_channel);
if (xrdp_sec_send(self->sec_layer, s, 0) != 0)
return 1;
DEBUG(("out xrdp_rdp_send\n\r"));
return 0;
}
/*****************************************************************************/
int xrdp_rdp_send_data(struct xrdp_rdp* self, struct stream* s,
int data_pdu_type)
{
int len;
DEBUG(("in xrdp_rdp_send_data\n\r"));
s_pop_layer(s, rdp_hdr);
len = s->end - s->p;
out_uint16_le(s, len);
out_uint16_le(s, 0x10 | RDP_PDU_DATA);
out_uint16_le(s, self->mcs_channel);
out_uint32_le(s, self->share_id);
out_uint8(s, 0);
out_uint8(s, 1);
out_uint16_le(s, len - 14);
out_uint8(s, data_pdu_type);
out_uint8(s, 0);
out_uint16_le(s, 0);
if (xrdp_sec_send(self->sec_layer, s, 0) != 0)
return 1;
DEBUG(("out xrdp_rdp_send_data\n\r"));
return 0;
}
/*****************************************************************************/
int xrdp_rdp_parse_client_mcs_data(struct xrdp_rdp* self)
{
struct stream* p;
int i;
p = &self->sec_layer->client_mcs_data;
p->p = p->data;
in_uint8s(p, 31);
in_uint16_le(p, self->width);
in_uint16_le(p, self->height);
in_uint8s(p, 120);
self->bpp = 8;
in_uint16_le(p, i);
switch (i)
{
case 0xca01:
in_uint8s(p, 6);
in_uint8(p, i);
if (i > 8)
self->bpp = i;
break;
case 0xca02:
self->bpp = 15;
break;
case 0xca03:
self->bpp = 16;
break;
case 0xca04:
self->bpp = 24;
break;
}
p->p = p->data;
DEBUG(("client width %d, client height %d bpp %d\n\r",
self->width, self->height, self->bpp));
return 0;
}
/*****************************************************************************/
int xrdp_rdp_incoming(struct xrdp_rdp* self)
{
DEBUG(("in xrdp_rdp_incoming\n"));
if (xrdp_sec_incoming(self->sec_layer) != 0)
return 1;
self->mcs_channel = self->sec_layer->mcs_layer->userid +
MCS_USERCHANNEL_BASE;
xrdp_rdp_parse_client_mcs_data(self);
DEBUG(("out xrdp_rdp_incoming mcs channel %d\n", self->mcs_channel));
return 0;
}
/*****************************************************************************/
int xrdp_rdp_send_demand_active(struct xrdp_rdp* self)
{
struct stream* s;
make_stream(s);
init_stream(s, 8192);
if (xrdp_rdp_init(self, s) != 0)
{
free_stream(s);
return 1;
}
out_uint32_le(s, self->share_id);
out_uint32_be(s, 0x04000401);
out_uint32_be(s, 0x524e5300);
out_uint32_be(s, 0x08000000);
out_uint32_be(s, 0x09000800);
out_uint16_le(s, self->mcs_channel);
out_uint16_be(s, 0xb5e2);
/* Output general capability set */
out_uint16_le(s, RDP_CAPSET_GENERAL); /* 1 */
out_uint16_le(s, RDP_CAPLEN_GENERAL); /* 24(0x18) */
out_uint16_le(s, 1); /* OS major type */
out_uint16_le(s, 3); /* OS minor type */
out_uint16_le(s, 0x200); /* Protocol version */
out_uint16_le(s, 0); /* pad */
out_uint16_le(s, 0); /* Compression types */
out_uint16_le(s, 0); /* pad */
out_uint16_le(s, 0); /* Update capability */
out_uint16_le(s, 0); /* Remote unshare capability */
out_uint16_le(s, 0); /* Compression level */
out_uint16_le(s, 0); /* Pad */
/* Output bitmap capability set */
out_uint16_le(s, RDP_CAPSET_BITMAP); /* 2 */
out_uint16_le(s, RDP_CAPLEN_BITMAP); /* 28(0x1c) */
out_uint16_le(s, self->bpp); /* Preferred BPP */
out_uint16_le(s, 1); /* Receive 1 BPP */
out_uint16_le(s, 1); /* Receive 4 BPP */
out_uint16_le(s, 1); /* Receive 8 BPP */
out_uint16_le(s, self->width); /* width */
out_uint16_le(s, self->height); /* height */
out_uint16_le(s, 0); /* Pad */
out_uint16_le(s, 1); /* Allow resize */
out_uint16_le(s, 1); /* bitmap compression */
out_uint16_le(s, 0); /* unknown */
out_uint16_le(s, 0); /* unknown */
out_uint16_le(s, 0); /* pad */
/* Output ? */
out_uint16_le(s, 14);
out_uint16_le(s, 4);
/* Output order capability set */
out_uint16_le(s, RDP_CAPSET_ORDER); /* 3 */
out_uint16_le(s, RDP_CAPLEN_ORDER); /* 88(0x58) */
out_uint8s(s, 16);
out_uint32_be(s, 0x40420f00);
out_uint16_le(s, 1); /* Cache X granularity */
out_uint16_le(s, 20); /* Cache Y granularity */
out_uint16_le(s, 0); /* Pad */
out_uint16_le(s, 1); /* Max order level */
out_uint16_le(s, 0x2f); /* Number of fonts */
out_uint16_le(s, 0x22); /* Capability flags */
/* caps */
out_uint8(s, 1); /* dest blt */
out_uint8(s, 1); /* pat blt */
out_uint8(s, 1); /* screen blt */
out_uint8(s, 1); /* memblt */
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 0);
out_uint8(s, 0);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 1);
out_uint8(s, 0);
out_uint8(s, 0);
out_uint8(s, 0);
out_uint16_le(s, 0x6a1);
out_uint8s(s, 6); /* ? */
out_uint32_le(s, 0x0f4240); /* desk save */
out_uint32_le(s, 0); /* ? */
out_uint32_le(s, 0); /* ? */
/* Output color cache capability set */
out_uint16_le(s, RDP_CAPSET_COLCACHE);
out_uint16_le(s, RDP_CAPLEN_COLCACHE);
out_uint16_le(s, 6); /* cache size */
out_uint16_le(s, 0); /* pad */
/* Output pointer capability set */
out_uint16_le(s, RDP_CAPSET_POINTER);
out_uint16_le(s, RDP_CAPLEN_POINTER);
out_uint16_le(s, 1); /* Colour pointer */
out_uint16_le(s, 0x19); /* Cache size */
/* Output ? */
out_uint16_le(s, 0xd);
out_uint16_le(s, 0x58); /* 88 */
out_uint8(s, 1);
out_uint8s(s, 83);
s_mark_end(s);
if (xrdp_rdp_send(self, s, RDP_PDU_DEMAND_ACTIVE) != 0)
{
free_stream(s);
return 1;
}
free_stream(s);
return 0;
}
/*****************************************************************************/
int xrdp_rdp_process_confirm_active(struct xrdp_rdp* self, struct stream* s)
{
return 0;
}
/*****************************************************************************/
int xrdp_rdp_process_data_pointer(struct xrdp_rdp* self, struct stream* s)
{
return 0;
}
/*****************************************************************************/
/* RDP_INPUT_SYNCHRONIZE */
int xrdp_rdp_process_input_sync(struct xrdp_rdp* self, int device_flags,
int key_flags)
{
DEBUG(("sync event flags %d key %d\n\r", device_flags, key_flags))
if (!self->up_and_running)
return 0;
return 0;
}
/*****************************************************************************/
/* RDP_INPUT_SCANCODE */
int xrdp_rdp_process_input_scancode(struct xrdp_rdp* self, int device_flags,
int scan_code)
{
DEBUG(("key event flags %d scan_code %d\n\r", device_flags, scan_code))
if (!self->up_and_running)
return 0;
return 0;
}
/*****************************************************************************/
/* RDP_INPUT_MOUSE */
int xrdp_rdp_process_input_mouse(struct xrdp_rdp* self, int device_flags,
int x, int y)
{
DEBUG(("mouse event flags %4.4x x - %d y - %d\n\r", device_flags, x, y));
if (!self->up_and_running)
return 0;
if (device_flags & MOUSE_FLAG_MOVE) /* 0x0800 */
xrdp_wm_mouse_move(self->pro_layer->wm, x, y);
if (device_flags & MOUSE_FLAG_BUTTON1) /* 0x1000 */
{
if (device_flags & MOUSE_FLAG_DOWN) /* 0x8000 */
xrdp_wm_mouse_click(self->pro_layer->wm, x, y, 1, 1);
else
xrdp_wm_mouse_click(self->pro_layer->wm, x, y, 1, 0);
}
if (device_flags & MOUSE_FLAG_BUTTON2) /* 0x2000 */
{
if (device_flags & MOUSE_FLAG_DOWN) /* 0x8000 */
xrdp_wm_mouse_click(self->pro_layer->wm, x, y, 2, 1);
else
xrdp_wm_mouse_click(self->pro_layer->wm, x, y, 2, 0);
}
return 0;
}
/*****************************************************************************/
/* RDP_DATA_PDU_INPUT */
int xrdp_rdp_process_data_input(struct xrdp_rdp* self, struct stream* s)
{
int num_events;
int index;
int msg_type;
int device_flags;
int param1;
int param2;
in_uint16_le(s, num_events);
in_uint8s(s, 2); /* pad */
DEBUG(("xrdp_rdp_process_data_input %d events\n\r", num_events))
for (index = 0; index < num_events; index++)
{
in_uint8s(s, 4); /* time */
in_uint16_le(s, msg_type);
in_uint16_le(s, device_flags);
in_sint16_le(s, param1);
in_sint16_le(s, param2);
switch (msg_type)
{
case RDP_INPUT_SYNCHRONIZE: /* 0 */
xrdp_rdp_process_input_sync(self, device_flags, param1);
break;
case RDP_INPUT_SCANCODE: /* 4 */
xrdp_rdp_process_input_scancode(self, device_flags, param1);
break;
case RDP_INPUT_MOUSE: /* 8001 */
xrdp_rdp_process_input_mouse(self, device_flags, param1, param2);
break;
default:
g_printf("unknown in xrdp_rdp_process_data_input\n\r");
break;
}
}
return 0;
}
/*****************************************************************************/
int xrdp_rdp_send_synchronise(struct xrdp_rdp* self)
{
struct stream* s;
make_stream(s);
init_stream(s, 8192);
if (xrdp_rdp_init_data(self, s) != 0)
{
free_stream(s);
return 1;
}
out_uint16_le(s, 1);
out_uint16_le(s, 1002);
s_mark_end(s);
if (xrdp_rdp_send_data(self, s, RDP_DATA_PDU_SYNCHRONISE) != 0)
{
free_stream(s);
return 1;
}
free_stream(s);
return 0;
}
/*****************************************************************************/
int xrdp_rdp_send_control(struct xrdp_rdp* self, int action)
{
struct stream* s;
make_stream(s);
init_stream(s, 8192);
if (xrdp_rdp_init_data(self, s) != 0)
{
free_stream(s);
return 1;
}
out_uint16_le(s, action);
out_uint16_le(s, 0); /* userid */
out_uint32_le(s, 1002); /* control id */
s_mark_end(s);
if (xrdp_rdp_send_data(self, s, RDP_DATA_PDU_CONTROL) != 0)
{
free_stream(s);
return 1;
}
free_stream(s);
return 0;
}
/*****************************************************************************/
int xrdp_rdp_process_data_control(struct xrdp_rdp* self, struct stream* s)
{
int action;
in_uint16_le(s, action);
in_uint8s(s, 2); /* user id */
in_uint8s(s, 4); /* control id */
if (action == RDP_CTL_REQUEST_CONTROL)
{
xrdp_rdp_send_synchronise(self);
xrdp_rdp_send_control(self, RDP_CTL_COOPERATE);
xrdp_rdp_send_control(self, RDP_CTL_GRANT_CONTROL);
}
return 0;
}
/*****************************************************************************/
int xrdp_rdp_process_data_sync(struct xrdp_rdp* self)
{
return 0;
}
/*****************************************************************************/
int xrdp_rdp_process_screen_update(struct xrdp_rdp* self, struct stream* s)
{
int op;
int left;
int top;
int right;
int bottom;
struct xrdp_rect rect;
in_uint32_le(s, op);
in_uint16_le(s, left);
in_uint16_le(s, top);
in_uint16_le(s, right);
in_uint16_le(s, bottom);
MAKERECT(rect, left, top, (right - left) + 1, (bottom - top) + 1);
if (self->up_and_running && self->pro_layer->wm != 0)
xrdp_bitmap_invalidate(self->pro_layer->wm->screen, &rect);
return 0;
}
/*****************************************************************************/
int xrdp_rdp_send_unknown1(struct xrdp_rdp* self)
{
struct stream* s;
make_stream(s);
init_stream(s, 8192);
if (xrdp_rdp_init_data(self, s) != 0)
{
free_stream(s);
return 1;
}
out_uint8a(s, unknown1, 172);
s_mark_end(s);
if (xrdp_rdp_send_data(self, s, 0x28) != 0)
{
free_stream(s);
return 1;
}
free_stream(s);
return 0;
}
/*****************************************************************************/
int xrdp_rdp_process_data_font(struct xrdp_rdp* self, struct stream* s)
{
int seq;
in_uint8s(s, 2); /* num of fonts */
in_uint8s(s, 2); // unknown
in_uint16_le(s, seq);
/* 419 client sends Seq 1, then 2 */
/* 2600 clients sends only Seq 3 */
if (seq == 2 || seq == 3) /* after second font message, we are up and */
{ /* running */
xrdp_rdp_send_unknown1(self);
self->up_and_running = 1;
}
return 0;
}
/*****************************************************************************/
/* RDP_PDU_DATA */
int xrdp_rdp_process_data(struct xrdp_rdp* self, struct stream* s)
{
int len;
int data_type;
int ctype;
int clen;
in_uint8s(s, 6);
in_uint16_le(s, len);
in_uint8(s, data_type);
in_uint8(s, ctype);
in_uint16_le(s, clen);
DEBUG(("xrdp_rdp_process_data code %d\n\r", data_type));
switch (data_type)
{
case RDP_DATA_PDU_POINTER: /* 27 */
xrdp_rdp_process_data_pointer(self, s);
break;
case RDP_DATA_PDU_INPUT: /* 28 */
xrdp_rdp_process_data_input(self, s);
break;
case RDP_DATA_PDU_CONTROL: /* 20 */
xrdp_rdp_process_data_control(self, s);
break;
case RDP_DATA_PDU_SYNCHRONISE: /* 31 */
xrdp_rdp_process_data_sync(self);
break;
case 33: /* 33 ?? */
xrdp_rdp_process_screen_update(self, s);
break;
//case 35: /* 35 ?? this comes when minimuzing a full screen mstsc.exe 2600 */
case 36: /* 36 ?? disconnect? */
return 1;
break;
case RDP_DATA_PDU_FONT2: /* 39 */
xrdp_rdp_process_data_font(self, s);
break;
default:
g_printf("unknown in xrdp_rdp_process_data %d\n\r", data_type);
break;
}
return 0;
}
/*****************************************************************************/
int xrdp_rdp_disconnect(struct xrdp_rdp* self)
{
return xrdp_sec_disconnect(self->sec_layer);
}
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