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xrdp-proprietary/sesman/chansrv/rail.c

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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2012
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
window manager info
http://www.freedesktop.org/wiki/Specifications/wm-spec
*/
#include <X11/Xlib.h>
#include "chansrv.h"
#include "rail.h"
#include "xcommon.h"
#include "log.h"
#include "os_calls.h"
#include "thread_calls.h"
extern int g_rail_chan_id; /* in chansrv.c */
extern int g_display_num; /* in chansrv.c */
extern char* g_exec_name; /* in chansrv.c */
extern tbus g_exec_event; /* in chansrv.c */
extern tbus g_exec_mutex; /* in chansrv.c */
extern tbus g_exec_sem; /* in chansrv.c */
extern Display* g_display; /* in xcommon.c */
extern Screen* g_screen; /* in xcommon.c */
extern Window g_root_window; /* in xcommon.c */
extern Atom g_wm_delete_window_atom; /* in xcommon.c */
extern Atom g_wm_protocols_atom; /* in xcommon.c */
int g_rail_up = 0;
/* for rail_is_another_wm_running */
static int g_rail_running = 1;
/* Indicates a Client Execute PDU from client to server. */
#define TS_RAIL_ORDER_EXEC 0x0001
/* Indicates a Client Activate PDU from client to server. */
#define TS_RAIL_ORDER_ACTIVATE 0x0002
/* Indicates a Client System Parameters Update PDU from client
to server or a Server System Parameters Update PDU
from server to client. */
#define TS_RAIL_ORDER_SYSPARAM 0x0003
/* Indicates a Client System Command PDU from client to server. */
#define TS_RAIL_ORDER_SYSCOMMAND 0x0004
/* Indicates a bi-directional Handshake PDU. */
#define TS_RAIL_ORDER_HANDSHAKE 0x0005
/* Indicates a Client Notify Event PDU from client to server. */
#define TS_RAIL_ORDER_NOTIFY_EVENT 0x0006
/* Indicates a Client Window Move PDU from client to server. */
#define TS_RAIL_ORDER_WINDOWMOVE 0x0008
/* Indicates a Server Move/Size Start PDU and a Server Move/Size
End PDU from server to client. */
#define TS_RAIL_ORDER_LOCALMOVESIZE 0x0009
/* Indicates a Server Min Max Info PDU from server to client. */
#define TS_RAIL_ORDER_MINMAXINFO 0x000a
/* Indicates a Client Information PDU from client to server. */
#define TS_RAIL_ORDER_CLIENTSTATUS 0x000b
/* Indicates a Client System Menu PDU from client to server. */
#define TS_RAIL_ORDER_SYSMENU 0x000c
/* Indicates a Server Language Bar Information PDU from server to
client, or a Client Language Bar Information PDU from client to server. */
#define TS_RAIL_ORDER_LANGBARINFO 0x000d
/* Indicates a Server Execute Result PDU from server to client. */
#define TS_RAIL_ORDER_EXEC_RESULT 0x0080
/* Indicates a Client Get Application ID PDU from client to server. */
#define TS_RAIL_ORDER_GET_APPID_REQ 0x000E
/* Indicates a Server Get Application ID Response PDU from
server to client. */
#define TS_RAIL_ORDER_GET_APPID_RESP 0x000F
/* Resize the window. */
#define SC_SIZE 0xF000
/* Move the window. */
#define SC_MOVE 0xF010
/* Minimize the window. */
#define SC_MINIMIZE 0xF020
/* Maximize the window. */
#define SC_MAXIMIZE 0xF030
/* Close the window. */
#define SC_CLOSE 0xF060
/* The ALT + SPACE key combination was pressed; display
the window's system menu. */
#define SC_KEYMENU 0xF100
/* Restore the window to its original shape and size. */
#define SC_RESTORE 0xF120
/* Perform the default action of the window's system menu. */
#define SC_DEFAULT 0xF160
/******************************************************************************/
static int APP_CC
is_window_valid_child_of_root(unsigned int window_id)
{
int found;
unsigned int i;
unsigned int nchild;
Window r;
Window p;
Window* children;
found = 0;
XQueryTree(g_display, g_root_window, &r, &p, &children, &nchild);
for (i = 0; i < nchild; i++)
{
if (window_id == children[i])
{
found = 1;
break;
}
}
XFree(children);
return found;
}
/*****************************************************************************/
static int APP_CC
rail_send_init(void)
{
struct stream* s;
int bytes;
char* size_ptr;
LOG(10, ("chansrv::rail_send_init:"));
make_stream(s);
init_stream(s, 8182);
out_uint16_le(s, TS_RAIL_ORDER_HANDSHAKE);
size_ptr = s->p;
out_uint16_le(s, 0); /* size, set later */
out_uint32_le(s, 1); /* build number */
s_mark_end(s);
bytes = (int)((s->end - s->data) - 4);
size_ptr[0] = bytes;
size_ptr[1] = bytes >> 8;
bytes = (int)(s->end - s->data);
send_channel_data(g_rail_chan_id, s->data, bytes);
free_stream(s);
return 0;
}
/******************************************************************************/
static int DEFAULT_CC
anotherWMRunning(Display* display, XErrorEvent* xe)
{
g_rail_running = 0;
return -1;
}
/******************************************************************************/
static int APP_CC
rail_is_another_wm_running(void)
{
XErrorHandler old;
g_rail_running = 1;
old = XSetErrorHandler((XErrorHandler)anotherWMRunning);
XSelectInput(g_display, g_root_window,
PropertyChangeMask | StructureNotifyMask |
SubstructureRedirectMask | ButtonPressMask |
SubstructureNotifyMask | FocusChangeMask |
EnterWindowMask | LeaveWindowMask);
XSync(g_display, 0);
XSetErrorHandler((XErrorHandler)old);
g_rail_up = g_rail_running;
if (!g_rail_up)
{
return 1;
}
return 0;
}
/*****************************************************************************/
int APP_CC
rail_init(void)
{
LOG(10, ("chansrv::rail_init:"));
xcommon_init();
if (rail_is_another_wm_running())
{
log_message(LOG_LEVEL_ERROR, "rail_init: another window manager "
"is running");
}
rail_send_init();
g_rail_up = 1;
return 0;
}
/*****************************************************************************/
int APP_CC
rail_deinit(void)
{
if (g_rail_up)
{
/* no longer window manager */
XSelectInput(g_display, g_root_window, 0);
g_rail_up = 0;
}
return 0;
}
/*****************************************************************************/
static char* APP_CC
read_uni(struct stream* s, int num_chars)
{
twchar* rchrs;
char* rv;
int index;
int lchars;
rchrs = 0;
rv = 0;
if (num_chars > 0)
{
rchrs = (twchar*)g_malloc((num_chars + 1) * sizeof(twchar), 0);
for (index = 0; index < num_chars; index++)
{
in_uint16_le(s, rchrs[index]);
}
rchrs[num_chars] = 0;
lchars = g_wcstombs(0, rchrs, 0);
if (lchars > 0)
{
rv = (char*)g_malloc((lchars + 1) * 4, 0);
g_wcstombs(rv, rchrs, lchars);
rv[lchars] = 0;
}
}
g_free(rchrs);
return rv;
}
/*****************************************************************************/
static int APP_CC
rail_process_exec(struct stream* s, int size)
{
int pid;
int flags;
int ExeOrFileLength;
int WorkingDirLength;
int ArgumentsLen;
char* ExeOrFile;
char* WorkingDir;
char* Arguments;
LOG(0, ("chansrv::rail_process_exec:"));
in_uint16_le(s, flags);
in_uint16_le(s, ExeOrFileLength);
in_uint16_le(s, WorkingDirLength);
in_uint16_le(s, ArgumentsLen);
ExeOrFile = read_uni(s, ExeOrFileLength);
WorkingDir = read_uni(s, WorkingDirLength);
Arguments = read_uni(s, ArgumentsLen);
LOG(10, (" flags 0x%8.8x ExeOrFileLength %d WorkingDirLength %d "
"ArgumentsLen %d ExeOrFile [%s] WorkingDir [%s] "
"Arguments [%s]", flags, ExeOrFileLength, WorkingDirLength,
ArgumentsLen, ExeOrFile, WorkingDir, Arguments));
if (g_strlen(ExeOrFile) > 0)
{
LOG(10, ("rail_process_exec: pre"));
/* ask main thread to fork */
tc_mutex_lock(g_exec_mutex);
g_exec_name = ExeOrFile;
g_set_wait_obj(g_exec_event);
tc_sem_dec(g_exec_sem);
tc_mutex_unlock(g_exec_mutex);
LOG(10, ("rail_process_exec: post"));
}
g_free(ExeOrFile);
g_free(WorkingDir);
g_free(Arguments);
return 0;
}
/*****************************************************************************/
static int APP_CC
rail_process_activate(struct stream* s, int size)
{
int window_id;
int enabled;
LOG(10, ("chansrv::rail_process_activate:"));
in_uint32_le(s, window_id);
in_uint8(s, enabled);
LOG(10, (" window_id 0x%8.8x enabled %d", window_id, enabled));
if (enabled)
{
LOG(10, ("chansrv::rail_process_activate: calling XRaiseWindow 0x%8.8x", window_id));
XRaiseWindow(g_display, window_id);
LOG(10, ("chansrv::rail_process_activate: calling XSetInputFocus 0x%8.8x", window_id));
XSetInputFocus(g_display, window_id, RevertToParent, CurrentTime);
}
return 0;
}
/*****************************************************************************/
static int APP_CC
rail_process_system_param(struct stream* s, int size)
{
int system_param;
LOG(10, ("chansrv::rail_process_system_param:"));
in_uint32_le(s, system_param);
LOG(10, (" system_param 0x%8.8x", system_param));
return 0;
}
/******************************************************************************/
static int APP_CC
rail_close_window(int window_id)
{
XEvent ce;
LOG(0, ("chansrv::rail_close_window:"));
g_memset(&ce, 0, sizeof(ce));
ce.xclient.type = ClientMessage;
ce.xclient.message_type = g_wm_protocols_atom;
ce.xclient.display = g_display;
ce.xclient.window = window_id;
ce.xclient.format = 32;
ce.xclient.data.l[0] = g_wm_delete_window_atom;
ce.xclient.data.l[1] = CurrentTime;
XSendEvent(g_display, window_id, False, NoEventMask, &ce);
return 0;
}
/*****************************************************************************/
static int APP_CC
rail_process_system_command(struct stream* s, int size)
{
int window_id;
int command;
LOG(10, ("chansrv::rail_process_system_command:"));
in_uint32_le(s, window_id);
in_uint16_le(s, command);
switch (command)
{
case SC_SIZE:
LOG(10, (" window_id 0x%8.8x SC_SIZE", window_id));
break;
case SC_MOVE:
LOG(10, (" window_id 0x%8.8x SC_MOVE", window_id));
break;
case SC_MINIMIZE:
LOG(10, (" window_id 0x%8.8x SC_MINIMIZE", window_id));
break;
case SC_MAXIMIZE:
LOG(10, (" window_id 0x%8.8x SC_MAXIMIZE", window_id));
break;
case SC_CLOSE:
LOG(10, (" window_id 0x%8.8x SC_CLOSE", window_id));
rail_close_window(window_id);
break;
case SC_KEYMENU:
LOG(10, (" window_id 0x%8.8x SC_KEYMENU", window_id));
break;
case SC_RESTORE:
LOG(10, (" window_id 0x%8.8x SC_RESTORE", window_id));
break;
case SC_DEFAULT:
LOG(10, (" window_id 0x%8.8x SC_DEFAULT", window_id));
break;
default:
LOG(10, (" window_id 0x%8.8x unknown command command %d",
window_id, command));
break;
}
return 0;
}
/*****************************************************************************/
static int APP_CC
rail_process_handshake(struct stream* s, int size)
{
int build_number;
LOG(10, ("chansrv::rail_process_handshake:"));
in_uint32_le(s, build_number);
LOG(10, (" build_number 0x%8.8x", build_number));
return 0;
}
/*****************************************************************************/
static int APP_CC
rail_process_notify_event(struct stream* s, int size)
{
int window_id;
int notify_id;
int message;
LOG(10, ("chansrv::rail_process_notify_event:"));
in_uint32_le(s, window_id);
in_uint32_le(s, notify_id);
in_uint32_le(s, message);
LOG(10, (" window_id 0x%8.8x notify_id 0x%8.8x message 0x%8.8x",
window_id, notify_id, message));
return 0;
}
/*****************************************************************************/
static int APP_CC
rail_process_window_move(struct stream* s, int size)
{
int window_id;
int left;
int top;
int right;
int bottom;
LOG(10, ("chansrv::rail_process_window_move:"));
in_uint32_le(s, window_id);
in_uint16_le(s, left);
in_uint16_le(s, top);
in_uint16_le(s, right);
in_uint16_le(s, bottom);
LOG(10, (" window_id 0x%8.8x left %d top %d right %d bottom %d width %d height %d",
window_id, left, top, right, bottom, right - left, bottom - top));
XMoveResizeWindow(g_display, window_id, left, top, right - left, bottom - top);
return 0;
}
/*****************************************************************************/
static int APP_CC
rail_process_local_move_size(struct stream* s, int size)
{
int window_id;
int is_move_size_start;
int move_size_type;
int pos_x;
int pos_y;
LOG(10, ("chansrv::rail_process_local_move_size:"));
in_uint32_le(s, window_id);
in_uint16_le(s, is_move_size_start);
in_uint16_le(s, move_size_type);
in_uint16_le(s, pos_x);
in_uint16_le(s, pos_y);
LOG(10, (" window_id 0x%8.8x is_move_size_start %d move_size_type %d "
"pos_x %d pos_y %d", window_id, is_move_size_start, move_size_type,
pos_x, pos_y));
return 0;
}
/*****************************************************************************/
/* server to client only */
static int APP_CC
rail_process_min_max_info(struct stream* s, int size)
{
LOG(10, ("chansrv::rail_process_min_max_info:"));
return 0;
}
/*****************************************************************************/
static int APP_CC
rail_process_client_status(struct stream* s, int size)
{
int flags;
LOG(10, ("chansrv::rail_process_client_status:"));
in_uint32_le(s, flags);
LOG(10, (" flags 0x%8.8x", flags));
return 0;
}
/*****************************************************************************/
static int APP_CC
rail_process_sys_menu(struct stream* s, int size)
{
int window_id;
int left;
int top;
LOG(10, ("chansrv::rail_process_sys_menu:"));
in_uint32_le(s, window_id);
in_uint16_le(s, left);
in_uint16_le(s, top);
LOG(10, (" window_id 0x%8.8x left %d top %d", window_id, left, top));
return 0;
}
/*****************************************************************************/
static int APP_CC
rail_process_lang_bar_info(struct stream* s, int size)
{
int language_bar_status;
LOG(10, ("chansrv::rail_process_lang_bar_info:"));
in_uint32_le(s, language_bar_status);
LOG(10, (" language_bar_status 0x%8.8x", language_bar_status));
return 0;
}
/*****************************************************************************/
static int APP_CC
rail_process_appid_req(struct stream* s, int size)
{
LOG(10, ("chansrv::rail_process_appid_req:"));
return 0;
}
/*****************************************************************************/
static int APP_CC
rail_process_appid_resp(struct stream* s, int size)
{
LOG(10, ("chansrv::rail_process_appid_resp:"));
return 0;
}
/*****************************************************************************/
/* server to client only */
static int APP_CC
rail_process_exec_result(struct stream* s, int size)
{
LOG(10, ("chansrv::rail_process_exec_result:"));
return 0;
}
/*****************************************************************************/
/* data in from client ( client -> xrdp -> chansrv ) */
int APP_CC
rail_data_in(struct stream* s, int chan_id, int chan_flags, int length,
int total_length)
{
int code;
int size;
LOG(10, ("chansrv::rail_data_in:"));
in_uint8(s, code);
in_uint8s(s, 1);
in_uint16_le(s, size);
switch (code)
{
case TS_RAIL_ORDER_EXEC: /* 1 */
rail_process_exec(s, size);
break;
case TS_RAIL_ORDER_ACTIVATE: /* 2 */
rail_process_activate(s, size);
break;
case TS_RAIL_ORDER_SYSPARAM: /* 3 */
rail_process_system_param(s, size);
break;
case TS_RAIL_ORDER_SYSCOMMAND: /* 4 */
rail_process_system_command(s, size);
break;
case TS_RAIL_ORDER_HANDSHAKE: /* 5 */
rail_process_handshake(s, size);
break;
case TS_RAIL_ORDER_NOTIFY_EVENT: /* 6 */
rail_process_notify_event(s, size);
break;
case TS_RAIL_ORDER_WINDOWMOVE: /* 8 */
rail_process_window_move(s, size);
break;
case TS_RAIL_ORDER_LOCALMOVESIZE: /* 9 */
rail_process_local_move_size(s, size);
break;
case TS_RAIL_ORDER_MINMAXINFO: /* 10 */
rail_process_min_max_info(s, size);
break;
case TS_RAIL_ORDER_CLIENTSTATUS: /* 11 */
rail_process_client_status(s, size);
break;
case TS_RAIL_ORDER_SYSMENU: /* 12 */
rail_process_sys_menu(s, size);
break;
case TS_RAIL_ORDER_LANGBARINFO: /* 13 */
rail_process_lang_bar_info(s, size);
break;
case TS_RAIL_ORDER_GET_APPID_REQ: /* 14 */
rail_process_appid_req(s, size);
break;
case TS_RAIL_ORDER_GET_APPID_RESP: /* 15 */
rail_process_appid_resp(s, size);
break;
case TS_RAIL_ORDER_EXEC_RESULT: /* 128 */
rail_process_exec_result(s, size);
break;
default:
LOG(10, ("rail_data_in: unknown code %d size %d", code, size));
break;
}
XFlush(g_display);
return 0;
}
/*****************************************************************************/
/* returns 0, event handled, 1 unhandled */
int APP_CC
rail_xevent(void* xevent)
{
XEvent* lxevent;
XWindowChanges xwc;
int rv;
int nchildren_return = 0;
Window root_return;
Window parent_return;
Window *children_return;
Window wreturn;
int revert_to;
XWindowAttributes wnd_attributes;
LOG(10, ("chansrv::rail_xevent:"));
if (!g_rail_up)
{
return 1;
}
rv = 1;
lxevent = (XEvent*)xevent;
switch (lxevent->type)
{
case ConfigureRequest:
LOG(10, (" got ConfigureRequest window_id 0x%8.8x", lxevent->xconfigurerequest.window));
g_memset(&xwc, 0, sizeof(xwc));
xwc.x = lxevent->xconfigurerequest.x;
xwc.y = lxevent->xconfigurerequest.y;
xwc.width = lxevent->xconfigurerequest.width;
xwc.height = lxevent->xconfigurerequest.height;
xwc.border_width = lxevent->xconfigurerequest.border_width;
xwc.sibling = lxevent->xconfigurerequest.above;
xwc.stack_mode = lxevent->xconfigurerequest.detail;
XConfigureWindow(g_display,
lxevent->xconfigurerequest.window,
lxevent->xconfigurerequest.value_mask,
&xwc);
rv = 0;
break;
case MapRequest:
LOG(10, (" got MapRequest"));
XMapWindow(g_display, lxevent->xmaprequest.window);
rv = 0;
break;
case MapNotify:
LOG(10, (" got MapNotify"));
break;
case UnmapNotify:
LOG(10, (" got UnmapNotify"));
break;
case ConfigureNotify:
LOG(10, (" got ConfigureNotify"));
break;
case FocusIn:
LOG(10, (" got FocusIn"));
break;
case ButtonPress:
LOG(10, (" got ButtonPress"));
break;
case EnterNotify:
LOG(10, (" got EnterNotify"));
break;
case LeaveNotify:
LOG(10, (" got LeaveNotify"));
break;
}
return rv;
}
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