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migrate k/m hook handlers from synwinhk to platform/MSWindowsHook and delete synwinhk.dll. for ever and ever.

This commit is contained in:
walker0643 2018-02-23 18:06:17 -05:00
parent a3ec43999f
commit be0fab1775
12 changed files with 706 additions and 1051 deletions
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4
src/lib/CMakeLists.txt
View File

@ -25,7 +25,3 @@ add_subdirectory(net)
add_subdirectory(platform) add_subdirectory(platform)
add_subdirectory(server) add_subdirectory(server)
add_subdirectory(barrier) add_subdirectory(barrier)
if (WIN32)
add_subdirectory(synwinhk)
endif()

2
src/lib/platform/CMakeLists.txt
View File

@ -15,7 +15,7 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>. # along with this program. If not, see <http://www.gnu.org/licenses/>.
if (WIN32) if (WIN32)
file(GLOB headers "MSWindows*.h" "ImmuneKeysReader.h") file(GLOB headers "MSWindows*.h" "ImmuneKeysReader.h" "synwinhk.h")
file(GLOB sources "MSWindows*.cpp" "ImmuneKeysReader.cpp") file(GLOB sources "MSWindows*.cpp" "ImmuneKeysReader.cpp")
elseif (APPLE) elseif (APPLE)
file(GLOB headers "OSX*.h" "IOSX*.h") file(GLOB headers "OSX*.h" "IOSX*.h")

52
src/lib/platform/MSWindowsDesks.cpp
View File

@ -1,5 +1,6 @@
/* /*
* barrier -- mouse and keyboard sharing utility * barrier -- mouse and keyboard sharing utility
* Copyright (C) 2018 Debauchee Open Source Group
* Copyright (C) 2012-2016 Symless Ltd. * Copyright (C) 2012-2016 Symless Ltd.
* Copyright (C) 2004 Chris Schoeneman * Copyright (C) 2004 Chris Schoeneman
* *
@ -18,7 +19,6 @@
#include "platform/MSWindowsDesks.h" #include "platform/MSWindowsDesks.h"
#include "synwinhk/synwinhk.h"
#include "platform/MSWindowsScreen.h" #include "platform/MSWindowsScreen.h"
#include "platform/ImmuneKeysReader.h" #include "platform/ImmuneKeysReader.h"
#include "barrier/IScreenSaver.h" #include "barrier/IScreenSaver.h"
@ -105,7 +105,7 @@ static std::vector<DWORD> immune_keys_list()
// //
MSWindowsDesks::MSWindowsDesks( MSWindowsDesks::MSWindowsDesks(
bool isPrimary, bool noHooks, HINSTANCE hookLibrary, bool isPrimary, bool noHooks,
const IScreenSaver* screensaver, IEventQueue* events, const IScreenSaver* screensaver, IEventQueue* events,
IJob* updateKeys, bool stopOnDeskSwitch) : IJob* updateKeys, bool stopOnDeskSwitch) :
m_isPrimary(isPrimary), m_isPrimary(isPrimary),
@ -128,9 +128,6 @@ MSWindowsDesks::MSWindowsDesks(
{ {
LOG((CLOG_DEBUG "Immune Keys Path: %s", ImmuneKeysPath.c_str())); LOG((CLOG_DEBUG "Immune Keys Path: %s", ImmuneKeysPath.c_str()));
if (hookLibrary != NULL)
queryHookLibrary(hookLibrary);
m_cursor = createBlankCursor(); m_cursor = createBlankCursor();
m_deskClass = createDeskWindowClass(m_isPrimary); m_deskClass = createDeskWindowClass(m_isPrimary);
m_keyLayout = GetKeyboardLayout(GetCurrentThreadId()); m_keyLayout = GetKeyboardLayout(GetCurrentThreadId());
@ -362,39 +359,6 @@ MSWindowsDesks::sendMessage(UINT msg, WPARAM wParam, LPARAM lParam) const
} }
} }
void
MSWindowsDesks::queryHookLibrary(HINSTANCE hookLibrary)
{
// look up functions
if (m_isPrimary && !m_noHooks) {
m_install = (InstallFunc)GetProcAddress(hookLibrary, "install");
m_uninstall = (UninstallFunc)GetProcAddress(hookLibrary, "uninstall");
//m_setImmuneKeys = (SetImmuneKeysFunc)GetProcAddress(hookLibrary, "setImmuneKeys");
m_installScreensaver =
(InstallScreenSaverFunc)GetProcAddress(
hookLibrary, "installScreenSaver");
m_uninstallScreensaver =
(UninstallScreenSaverFunc)GetProcAddress(
hookLibrary, "uninstallScreenSaver");
if (m_install == NULL ||
m_uninstall == NULL ||
//m_setImmuneKeys == NULL ||
m_installScreensaver == NULL ||
m_uninstallScreensaver == NULL) {
LOG((CLOG_ERR "Invalid hook library"));
throw XScreenOpenFailure();
}
}
else {
m_install = NULL;
m_uninstall = NULL;
//m_setImmuneKeys = NULL;
m_installScreensaver = NULL;
m_uninstallScreensaver = NULL;
}
}
HCURSOR HCURSOR
MSWindowsDesks::createBlankCursor() const MSWindowsDesks::createBlankCursor() const
{ {
@ -709,17 +673,17 @@ MSWindowsDesks::deskThread(void* vdesk)
case BARRIER_MSG_SWITCH: case BARRIER_MSG_SWITCH:
if (m_isPrimary && !m_noHooks) { if (m_isPrimary && !m_noHooks) {
m_uninstall(); MSWindowsHook::uninstall();
if (m_screensaverNotify) { if (m_screensaverNotify) {
m_uninstallScreensaver(); MSWindowsHook::uninstallScreenSaver();
m_installScreensaver(); MSWindowsHook::installScreenSaver();
} }
// populate immune keys list in the DLL's shared memory // populate immune keys list in the DLL's shared memory
// before the hooks are activated // before the hooks are activated
auto list = immune_keys_list(); auto list = immune_keys_list();
LOG((CLOG_DEBUG "Found %u immune keys", list.size())); LOG((CLOG_DEBUG "Found %u immune keys", list.size()));
//m_setImmuneKeys(list.data(), list.size()); //m_setImmuneKeys(list.data(), list.size());
switch (m_install()) { switch (MSWindowsHook::install()) {
case kHOOK_FAILED: case kHOOK_FAILED:
// we won't work on this desk // we won't work on this desk
desk->m_lowLevel = false; desk->m_lowLevel = false;
@ -795,10 +759,10 @@ MSWindowsDesks::deskThread(void* vdesk)
case BARRIER_MSG_SCREENSAVER: case BARRIER_MSG_SCREENSAVER:
if (!m_noHooks) { if (!m_noHooks) {
if (msg.wParam != 0) { if (msg.wParam != 0) {
m_installScreensaver(); MSWindowsHook::installScreenSaver();
} }
else { else {
m_uninstallScreensaver(); MSWindowsHook::uninstallScreenSaver();
} }
} }
break; break;

15
src/lib/platform/MSWindowsDesks.h
View File

@ -1,5 +1,6 @@
/* /*
* barrier -- mouse and keyboard sharing utility * barrier -- mouse and keyboard sharing utility
* Copyright (C) 2018 Debauchee Open Source Group
* Copyright (C) 2012-2016 Symless Ltd. * Copyright (C) 2012-2016 Symless Ltd.
* Copyright (C) 2004 Chris Schoeneman * Copyright (C) 2004 Chris Schoeneman
* *
@ -18,7 +19,7 @@
#pragma once #pragma once
#include "synwinhk/synwinhk.h" #include "platform/synwinhk.h"
#include "barrier/key_types.h" #include "barrier/key_types.h"
#include "barrier/mouse_types.h" #include "barrier/mouse_types.h"
#include "barrier/option_types.h" #include "barrier/option_types.h"
@ -65,7 +66,7 @@ public:
\p hookLibrary must be a handle to the hook library. \p hookLibrary must be a handle to the hook library.
*/ */
MSWindowsDesks( MSWindowsDesks(
bool isPrimary, bool noHooks, HINSTANCE hookLibrary, bool isPrimary, bool noHooks,
const IScreenSaver* screensaver, IEventQueue* events, const IScreenSaver* screensaver, IEventQueue* events,
IJob* updateKeys, bool stopOnDeskSwitch); IJob* updateKeys, bool stopOnDeskSwitch);
~MSWindowsDesks(); ~MSWindowsDesks();
@ -206,7 +207,6 @@ private:
typedef std::map<String, Desk*> Desks; typedef std::map<String, Desk*> Desks;
// initialization and shutdown operations // initialization and shutdown operations
void queryHookLibrary(HINSTANCE hookLibrary);
HCURSOR createBlankCursor() const; HCURSOR createBlankCursor() const;
void destroyCursor(HCURSOR cursor) const; void destroyCursor(HCURSOR cursor) const;
ATOM createDeskWindowClass(bool isPrimary) const; ATOM createDeskWindowClass(bool isPrimary) const;
@ -283,15 +283,6 @@ private:
CondVar<bool> m_deskReady; CondVar<bool> m_deskReady;
Desks m_desks; Desks m_desks;
// hook library stuff
InstallFunc m_install;
UninstallFunc m_uninstall;
//SetImmuneKeysFunc m_setImmuneKeys;
InstallScreenSaverFunc
m_installScreensaver;
UninstallScreenSaverFunc
m_uninstallScreensaver;
// keyboard stuff // keyboard stuff
IJob* m_updateKeys; IJob* m_updateKeys;
HKL m_keyLayout; HKL m_keyLayout;

740
src/lib/platform/MSWindowsHook.cpp
View File

@ -1,5 +1,6 @@
/* /*
* barrier -- mouse and keyboard sharing utility * barrier -- mouse and keyboard sharing utility
* Copyright (C) 2018 Debauchee Open Source Group
* Copyright (C) 2012-2016 Symless Ltd. * Copyright (C) 2012-2016 Symless Ltd.
* Copyright (C) 2011 Chris Schoeneman * Copyright (C) 2011 Chris Schoeneman
* *
@ -17,19 +18,43 @@
*/ */
#include "platform/MSWindowsHook.h" #include "platform/MSWindowsHook.h"
#include "barrier/protocol_types.h"
#include "barrier/XScreen.h" #include "barrier/XScreen.h"
#include "base/Log.h" #include "base/Log.h"
//
// debugging compile flag. when not zero the server doesn't grab
// the keyboard when the mouse leaves the server screen. this
// makes it possible to use the debugger (via the keyboard) when
// all user input would normally be caught by the hook procedures.
//
#define NO_GRAB_KEYBOARD 0
static const char* g_name = "synwinhk"; static const char* g_name = "synwinhk";
MSWindowsHook::MSWindowsHook() : static DWORD g_processID = 0;
m_initFunc(NULL), static DWORD g_threadID = 0;
m_cleanupFunc(NULL), static HHOOK g_getMessage = NULL;
m_setSidesFunc(NULL), static HHOOK g_keyboardLL = NULL;
m_setZoneFunc(NULL), static HHOOK g_mouseLL = NULL;
m_setModeFunc(NULL), static bool g_screenSaver = false;
m_instance(NULL) static EHookMode g_mode = kHOOK_DISABLE;
static UInt32 g_zoneSides = 0;
static SInt32 g_zoneSize = 0;
static SInt32 g_xScreen = 0;
static SInt32 g_yScreen = 0;
static SInt32 g_wScreen = 0;
static SInt32 g_hScreen = 0;
static WPARAM g_deadVirtKey = 0;
static WPARAM g_deadRelease = 0;
static LPARAM g_deadLParam = 0;
static BYTE g_deadKeyState[256] = { 0 };
static BYTE g_keyState[256] = { 0 };
static DWORD g_hookThread = 0;
static bool g_fakeServerInput = false;
static BOOL g_isPrimary = TRUE;
MSWindowsHook::MSWindowsHook()
{ {
} }
@ -37,92 +62,693 @@ MSWindowsHook::~MSWindowsHook()
{ {
cleanup(); cleanup();
if (m_instance != NULL) { if (g_processID == GetCurrentProcessId()) {
FreeLibrary(m_instance); uninstall();
uninstallScreenSaver();
g_processID = 0;
} }
} }
void void
MSWindowsHook::loadLibrary() MSWindowsHook::loadLibrary()
{ {
// load library if (g_processID == 0) {
m_instance = LoadLibrary(g_name); g_processID = GetCurrentProcessId();
if (m_instance == NULL) {
LOG((CLOG_ERR "failed to load hook library, %s.dll is missing or invalid", g_name));
throw XScreenOpenFailure();
} }
// look up functions
m_setSidesFunc = (SetSidesFunc)GetProcAddress(m_instance, "setSides");
m_setZoneFunc = (SetZoneFunc)GetProcAddress(m_instance, "setZone");
m_setModeFunc = (SetModeFunc)GetProcAddress(m_instance, "setMode");
m_initFunc = (InitFunc)GetProcAddress(m_instance, "init");
m_cleanupFunc = (CleanupFunc)GetProcAddress(m_instance, "cleanup");
if (m_setSidesFunc == NULL ||
m_setZoneFunc == NULL ||
m_setModeFunc == NULL ||
m_initFunc == NULL ||
m_cleanupFunc == NULL) {
LOG((CLOG_ERR "failed to load hook function, %s.dll could be out of date", g_name));
throw XScreenOpenFailure();
}
// initialize library
if (init(GetCurrentThreadId()) == 0) { if (init(GetCurrentThreadId()) == 0) {
LOG((CLOG_ERR "failed to init %s.dll, another program may be using it", g_name)); LOG((CLOG_ERR "failed to init hooks handler"));
LOG((CLOG_INFO "restarting your computer may solve this error"));
throw XScreenOpenFailure(); throw XScreenOpenFailure();
} }
} }
HINSTANCE
MSWindowsHook::getInstance() const
{
return m_instance;
}
int int
MSWindowsHook::init(DWORD threadID) MSWindowsHook::init(DWORD threadID)
{ {
if (m_initFunc == NULL) { // try to open process that last called init() to see if it's
return NULL; // still running or if it died without cleaning up.
if (g_processID != 0 && g_processID != GetCurrentProcessId()) {
HANDLE process = OpenProcess(STANDARD_RIGHTS_REQUIRED,
FALSE, g_processID);
if (process != NULL) {
// old process (probably) still exists so refuse to
// reinitialize this DLL (and thus steal it from the
// old process).
int result = CloseHandle(process);
if (result == false) {
return 0;
}
}
// clean up after old process. the system should've already
// removed the hooks so we just need to reset our state.
g_processID = GetCurrentProcessId();
g_threadID = 0;
g_getMessage = NULL;
g_keyboardLL = NULL;
g_mouseLL = NULL;
g_screenSaver = false;
} }
return m_initFunc(threadID);
// save thread id. we'll post messages to this thread's
// message queue.
g_threadID = threadID;
// set defaults
g_mode = kHOOK_DISABLE;
g_zoneSides = 0;
g_zoneSize = 0;
g_xScreen = 0;
g_yScreen = 0;
g_wScreen = 0;
g_hScreen = 0;
return 1;
} }
int int
MSWindowsHook::cleanup() MSWindowsHook::cleanup()
{ {
if (m_cleanupFunc == NULL) { if (g_processID == GetCurrentProcessId()) {
return NULL; g_threadID = 0;
} }
return m_cleanupFunc();
return 1;
} }
void void
MSWindowsHook::setSides(UInt32 sides) MSWindowsHook::setSides(UInt32 sides)
{ {
if (m_setSidesFunc == NULL) { g_zoneSides = sides;
return;
}
m_setSidesFunc(sides);
} }
void void
MSWindowsHook::setZone(SInt32 x, SInt32 y, SInt32 w, SInt32 h, SInt32 jumpZoneSize) MSWindowsHook::setZone(SInt32 x, SInt32 y, SInt32 w, SInt32 h, SInt32 jumpZoneSize)
{ {
if (m_setZoneFunc == NULL) { g_zoneSize = jumpZoneSize;
return; g_xScreen = x;
} g_yScreen = y;
m_setZoneFunc(x, y, w, h, jumpZoneSize); g_wScreen = w;
g_hScreen = h;
} }
void void
MSWindowsHook::setMode(EHookMode mode) MSWindowsHook::setMode(EHookMode mode)
{ {
if (m_setModeFunc == NULL) { g_mode = mode;
}
#if !NO_GRAB_KEYBOARD
static
void
keyboardGetState(BYTE keys[256], DWORD vkCode, bool kf_up)
{
// we have to use GetAsyncKeyState() rather than GetKeyState() because
// we don't pass through most keys so the event synchronous state
// doesn't get updated. we do that because certain modifier keys have
// side effects, like alt and the windows key.
if (vkCode < 0 || vkCode >= 256) {
return; return;
} }
m_setModeFunc(mode);
// Keep track of key state on our own in case GetAsyncKeyState() fails
g_keyState[vkCode] = kf_up ? 0 : 0x80;
g_keyState[VK_SHIFT] = g_keyState[VK_LSHIFT] | g_keyState[VK_RSHIFT];
SHORT key;
// Test whether GetAsyncKeyState() is being honest with us
key = GetAsyncKeyState(vkCode);
if (key & 0x80) {
// The only time we know for sure that GetAsyncKeyState() is working
// is when it tells us that the current key is down.
// In this case, update g_keyState to reflect what GetAsyncKeyState()
// is telling us, just in case we have gotten out of sync
for (int i = 0; i < 256; ++i) {
key = GetAsyncKeyState(i);
g_keyState[i] = (BYTE)((key < 0) ? 0x80u : 0);
}
}
// copy g_keyState to keys
for (int i = 0; i < 256; ++i) {
keys[i] = g_keyState[i];
}
key = GetKeyState(VK_CAPITAL);
keys[VK_CAPITAL] = (BYTE)(((key < 0) ? 0x80 : 0) | (key & 1));
} }
static
WPARAM
makeKeyMsg(UINT virtKey, char c, bool noAltGr)
{
return MAKEWPARAM(MAKEWORD(virtKey & 0xff, (BYTE)c), noAltGr ? 1 : 0);
}
static
bool
keyboardHookHandler(WPARAM wParam, LPARAM lParam)
{
DWORD vkCode = static_cast<DWORD>(wParam);
bool kf_up = (lParam & (KF_UP << 16)) != 0;
// check for special events indicating if we should start or stop
// passing events through and not report them to the server. this
// is used to allow the server to synthesize events locally but
// not pick them up as user events.
if (wParam == BARRIER_HOOK_FAKE_INPUT_VIRTUAL_KEY &&
((lParam >> 16) & 0xffu) == BARRIER_HOOK_FAKE_INPUT_SCANCODE) {
// update flag
g_fakeServerInput = ((lParam & 0x80000000u) == 0);
PostThreadMessage(g_threadID, BARRIER_MSG_DEBUG,
0xff000000u | wParam, lParam);
// discard event
return true;
}
// if we're expecting fake input then just pass the event through
// and do not forward to the server
if (g_fakeServerInput) {
PostThreadMessage(g_threadID, BARRIER_MSG_DEBUG,
0xfe000000u | wParam, lParam);
return false;
}
// VK_RSHIFT may be sent with an extended scan code but right shift
// is not an extended key so we reset that bit.
if (wParam == VK_RSHIFT) {
lParam &= ~0x01000000u;
}
// tell server about event
PostThreadMessage(g_threadID, BARRIER_MSG_DEBUG, wParam, lParam);
// ignore dead key release
if ((g_deadVirtKey == wParam || g_deadRelease == wParam) &&
(lParam & 0x80000000u) != 0) {
g_deadRelease = 0;
PostThreadMessage(g_threadID, BARRIER_MSG_DEBUG,
wParam | 0x04000000, lParam);
return false;
}
// we need the keyboard state for ToAscii()
BYTE keys[256];
keyboardGetState(keys, vkCode, kf_up);
// ToAscii() maps ctrl+letter to the corresponding control code
// and ctrl+backspace to delete. we don't want those translations
// so clear the control modifier state. however, if we want to
// simulate AltGr (which is ctrl+alt) then we must not clear it.
UINT control = keys[VK_CONTROL] | keys[VK_LCONTROL] | keys[VK_RCONTROL];
UINT menu = keys[VK_MENU] | keys[VK_LMENU] | keys[VK_RMENU];
if ((control & 0x80) == 0 || (menu & 0x80) == 0) {
keys[VK_LCONTROL] = 0;
keys[VK_RCONTROL] = 0;
keys[VK_CONTROL] = 0;
} else {
keys[VK_LCONTROL] = 0x80;
keys[VK_RCONTROL] = 0x80;
keys[VK_CONTROL] = 0x80;
keys[VK_LMENU] = 0x80;
keys[VK_RMENU] = 0x80;
keys[VK_MENU] = 0x80;
}
// ToAscii() needs to know if a menu is active for some reason.
// we don't know and there doesn't appear to be any way to find
// out. so we'll just assume a menu is active if the menu key
// is down.
// FIXME -- figure out some way to check if a menu is active
UINT flags = 0;
if ((menu & 0x80) != 0)
flags |= 1;
// if we're on the server screen then just pass numpad keys with alt
// key down as-is. we won't pick up the resulting character but the
// local app will. if on a client screen then grab keys as usual;
// if the client is a windows system it'll synthesize the expected
// character. if not then it'll probably just do nothing.
if (g_mode != kHOOK_RELAY_EVENTS) {
// we don't use virtual keys because we don't know what the
// state of the numlock key is. we'll hard code the scan codes
// instead. hopefully this works across all keyboards.
UINT sc = (lParam & 0x01ff0000u) >> 16;
if (menu &&
(sc >= 0x47u && sc <= 0x52u && sc != 0x4au && sc != 0x4eu)) {
return false;
}
}
WORD c = 0;
// map the key event to a character. we have to put the dead
// key back first and this has the side effect of removing it.
if (g_deadVirtKey != 0) {
if (ToAscii((UINT)g_deadVirtKey, (g_deadLParam & 0x10ff0000u) >> 16,
g_deadKeyState, &c, flags) == 2) {
// If ToAscii returned 2, it means that we accidentally removed
// a double dead key instead of restoring it. Thus, we call
// ToAscii again with the same parameters to restore the
// internal dead key state.
ToAscii((UINT)g_deadVirtKey, (g_deadLParam & 0x10ff0000u) >> 16,
g_deadKeyState, &c, flags);
// We need to keep track of this because g_deadVirtKey will be
// cleared later on; this would cause the dead key release to
// incorrectly restore the dead key state.
g_deadRelease = g_deadVirtKey;
}
}
UINT scanCode = ((lParam & 0x10ff0000u) >> 16);
int n = ToAscii((UINT)wParam, scanCode, keys, &c, flags);
// if mapping failed and ctrl and alt are pressed then try again
// with both not pressed. this handles the case where ctrl and
// alt are being used as individual modifiers rather than AltGr.
// we note that's the case in the message sent back to barrier
// because there's no simple way to deduce it after the fact.
// we have to put the dead key back first, if there was one.
bool noAltGr = false;
if (n == 0 && (control & 0x80) != 0 && (menu & 0x80) != 0) {
noAltGr = true;
PostThreadMessage(g_threadID, BARRIER_MSG_DEBUG,
wParam | 0x05000000, lParam);
if (g_deadVirtKey != 0) {
if (ToAscii((UINT)g_deadVirtKey, (g_deadLParam & 0x10ff0000u) >> 16,
g_deadKeyState, &c, flags) == 2) {
ToAscii((UINT)g_deadVirtKey, (g_deadLParam & 0x10ff0000u) >> 16,
g_deadKeyState, &c, flags);
g_deadRelease = g_deadVirtKey;
}
}
BYTE keys2[256];
for (size_t i = 0; i < sizeof(keys) / sizeof(keys[0]); ++i) {
keys2[i] = keys[i];
}
keys2[VK_LCONTROL] = 0;
keys2[VK_RCONTROL] = 0;
keys2[VK_CONTROL] = 0;
keys2[VK_LMENU] = 0;
keys2[VK_RMENU] = 0;
keys2[VK_MENU] = 0;
n = ToAscii((UINT)wParam, scanCode, keys2, &c, flags);
}
PostThreadMessage(g_threadID, BARRIER_MSG_DEBUG,
wParam | ((c & 0xff) << 8) |
((n & 0xff) << 16) | 0x06000000,
lParam);
WPARAM charAndVirtKey = 0;
bool clearDeadKey = false;
switch (n) {
default:
// key is a dead key
if (lParam & 0x80000000u)
// This handles the obscure situation where a key has been
// pressed which is both a dead key and a normal character
// depending on which modifiers have been pressed. We
// break here to prevent it from being considered a dead
// key.
break;
g_deadVirtKey = wParam;
g_deadLParam = lParam;
for (size_t i = 0; i < sizeof(keys) / sizeof(keys[0]); ++i) {
g_deadKeyState[i] = keys[i];
}
break;
case 0:
// key doesn't map to a character. this can happen if
// non-character keys are pressed after a dead key.
charAndVirtKey = makeKeyMsg((UINT)wParam, (char)0, noAltGr);
break;
case 1:
// key maps to a character composed with dead key
charAndVirtKey = makeKeyMsg((UINT)wParam, (char)LOBYTE(c), noAltGr);
clearDeadKey = true;
break;
case 2: {
// previous dead key not composed. send a fake key press
// and release for the dead key to our window.
WPARAM deadCharAndVirtKey =
makeKeyMsg((UINT)g_deadVirtKey, (char)LOBYTE(c), noAltGr);
PostThreadMessage(g_threadID, BARRIER_MSG_KEY,
deadCharAndVirtKey, g_deadLParam & 0x7fffffffu);
PostThreadMessage(g_threadID, BARRIER_MSG_KEY,
deadCharAndVirtKey, g_deadLParam | 0x80000000u);
// use uncomposed character
charAndVirtKey = makeKeyMsg((UINT)wParam, (char)HIBYTE(c), noAltGr);
clearDeadKey = true;
break;
}
}
// put back the dead key, if any, for the application to use
if (g_deadVirtKey != 0) {
ToAscii((UINT)g_deadVirtKey, (g_deadLParam & 0x10ff0000u) >> 16,
g_deadKeyState, &c, flags);
}
// clear out old dead key state
if (clearDeadKey) {
g_deadVirtKey = 0;
g_deadLParam = 0;
}
// forward message to our window. do this whether or not we're
// forwarding events to clients because this'll keep our thread's
// key state table up to date. that's important for querying
// the scroll lock toggle state.
// XXX -- with hot keys for actions we may only need to do this when
// forwarding.
if (charAndVirtKey != 0) {
PostThreadMessage(g_threadID, BARRIER_MSG_DEBUG,
charAndVirtKey | 0x07000000, lParam);
PostThreadMessage(g_threadID, BARRIER_MSG_KEY, charAndVirtKey, lParam);
}
if (g_mode == kHOOK_RELAY_EVENTS) {
// let certain keys pass through
switch (wParam) {
case VK_CAPITAL:
case VK_NUMLOCK:
case VK_SCROLL:
// pass event on. we want to let these through to
// the window proc because otherwise the keyboard
// lights may not stay synchronized.
break;
case VK_HANGUL:
// pass these modifiers if using a low level hook, discard
// them if not.
if (g_hookThread == 0) {
return true;
}
break;
default:
// discard
return true;
}
}
return false;
}
static
LRESULT CALLBACK
keyboardLLHook(int code, WPARAM wParam, LPARAM lParam)
{
if (code >= 0) {
// decode the message
KBDLLHOOKSTRUCT* info = reinterpret_cast<KBDLLHOOKSTRUCT*>(lParam);
WPARAM wParam = info->vkCode;
LPARAM lParam = 1; // repeat code
lParam |= (info->scanCode << 16); // scan code
if (info->flags & LLKHF_EXTENDED) {
lParam |= (1lu << 24); // extended key
}
if (info->flags & LLKHF_ALTDOWN) {
lParam |= (1lu << 29); // context code
}
if (info->flags & LLKHF_UP) {
lParam |= (1lu << 31); // transition
}
// FIXME -- bit 30 should be set if key was already down but
// we don't know that info. as a result we'll never generate
// key repeat events.
// handle the message
if (keyboardHookHandler(wParam, lParam)) {
return 1;
}
}
return CallNextHookEx(g_keyboardLL, code, wParam, lParam);
}
#endif // !NO_GRAB_KEYBOARD
static
bool
mouseHookHandler(WPARAM wParam, SInt32 x, SInt32 y, SInt32 data)
{
switch (wParam) {
case WM_LBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_XBUTTONDOWN:
case WM_LBUTTONDBLCLK:
case WM_MBUTTONDBLCLK:
case WM_RBUTTONDBLCLK:
case WM_XBUTTONDBLCLK:
case WM_LBUTTONUP:
case WM_MBUTTONUP:
case WM_RBUTTONUP:
case WM_XBUTTONUP:
case WM_NCLBUTTONDOWN:
case WM_NCMBUTTONDOWN:
case WM_NCRBUTTONDOWN:
case WM_NCXBUTTONDOWN:
case WM_NCLBUTTONDBLCLK:
case WM_NCMBUTTONDBLCLK:
case WM_NCRBUTTONDBLCLK:
case WM_NCXBUTTONDBLCLK:
case WM_NCLBUTTONUP:
case WM_NCMBUTTONUP:
case WM_NCRBUTTONUP:
case WM_NCXBUTTONUP:
// always relay the event. eat it if relaying.
PostThreadMessage(g_threadID, BARRIER_MSG_MOUSE_BUTTON, wParam, data);
return (g_mode == kHOOK_RELAY_EVENTS);
case WM_MOUSEWHEEL:
if (g_mode == kHOOK_RELAY_EVENTS) {
// relay event
PostThreadMessage(g_threadID, BARRIER_MSG_MOUSE_WHEEL, data, 0);
}
return (g_mode == kHOOK_RELAY_EVENTS);
case WM_NCMOUSEMOVE:
case WM_MOUSEMOVE:
if (g_mode == kHOOK_RELAY_EVENTS) {
// relay and eat event
PostThreadMessage(g_threadID, BARRIER_MSG_MOUSE_MOVE, x, y);
return true;
} else if (g_mode == kHOOK_WATCH_JUMP_ZONE) {
// low level hooks can report bogus mouse positions that are
// outside of the screen. jeez. naturally we end up getting
// fake motion in the other direction to get the position back
// on the screen, which plays havoc with switch on double tap.
// Server deals with that. we'll clamp positions onto the
// screen. also, if we discard events for positions outside
// of the screen then the mouse appears to get a bit jerky
// near the edge. we can either accept that or pass the bogus
// events. we'll try passing the events.
bool bogus = false;
if (x < g_xScreen) {
x = g_xScreen;
bogus = true;
} else if (x >= g_xScreen + g_wScreen) {
x = g_xScreen + g_wScreen - 1;
bogus = true;
}
if (y < g_yScreen) {
y = g_yScreen;
bogus = true;
} else if (y >= g_yScreen + g_hScreen) {
y = g_yScreen + g_hScreen - 1;
bogus = true;
}
// check for mouse inside jump zone
bool inside = false;
if (!inside && (g_zoneSides & kLeftMask) != 0) {
inside = (x < g_xScreen + g_zoneSize);
}
if (!inside && (g_zoneSides & kRightMask) != 0) {
inside = (x >= g_xScreen + g_wScreen - g_zoneSize);
}
if (!inside && (g_zoneSides & kTopMask) != 0) {
inside = (y < g_yScreen + g_zoneSize);
}
if (!inside && (g_zoneSides & kBottomMask) != 0) {
inside = (y >= g_yScreen + g_hScreen - g_zoneSize);
}
// relay the event
PostThreadMessage(g_threadID, BARRIER_MSG_MOUSE_MOVE, x, y);
// if inside and not bogus then eat the event
return inside && !bogus;
}
}
// pass the event
return false;
}
static
LRESULT CALLBACK
mouseLLHook(int code, WPARAM wParam, LPARAM lParam)
{
if (code >= 0) {
// decode the message
MSLLHOOKSTRUCT* info = reinterpret_cast<MSLLHOOKSTRUCT*>(lParam);
SInt32 x = static_cast<SInt32>(info->pt.x);
SInt32 y = static_cast<SInt32>(info->pt.y);
SInt32 w = static_cast<SInt16>(HIWORD(info->mouseData));
// handle the message
if (mouseHookHandler(wParam, x, y, w)) {
return 1;
}
}
return CallNextHookEx(g_mouseLL, code, wParam, lParam);
}
EHookResult
MSWindowsHook::install()
{
assert(g_getMessage == NULL || g_screenSaver);
// must be initialized
if (g_threadID == 0) {
return kHOOK_FAILED;
}
// discard old dead keys
g_deadVirtKey = 0;
g_deadLParam = 0;
// reset fake input flag
g_fakeServerInput = false;
// install low-level hooks. we require that they both get installed.
g_mouseLL = SetWindowsHookEx(WH_MOUSE_LL,
&mouseLLHook,
NULL,
0);
#if !NO_GRAB_KEYBOARD
g_keyboardLL = SetWindowsHookEx(WH_KEYBOARD_LL,
&keyboardLLHook,
NULL,
0);
if (g_mouseLL == NULL || g_keyboardLL == NULL) {
if (g_keyboardLL != NULL) {
UnhookWindowsHookEx(g_keyboardLL);
g_keyboardLL = NULL;
}
if (g_mouseLL != NULL) {
UnhookWindowsHookEx(g_mouseLL);
g_mouseLL = NULL;
}
}
#endif
// check that we got all the hooks we wanted
if ((g_mouseLL == NULL)
#if !NO_GRAB_KEYBOARD
|| (g_keyboardLL == NULL)
#endif
) {
uninstall();
return kHOOK_FAILED;
}
if (g_keyboardLL != NULL || g_mouseLL != NULL) {
g_hookThread = GetCurrentThreadId();
return kHOOK_OKAY_LL;
}
return kHOOK_OKAY;
}
int
MSWindowsHook::uninstall()
{
// discard old dead keys
g_deadVirtKey = 0;
g_deadLParam = 0;
// uninstall hooks
if (g_keyboardLL != NULL) {
UnhookWindowsHookEx(g_keyboardLL);
g_keyboardLL = NULL;
}
if (g_mouseLL != NULL) {
UnhookWindowsHookEx(g_mouseLL);
g_mouseLL = NULL;
}
if (g_getMessage != NULL && !g_screenSaver) {
UnhookWindowsHookEx(g_getMessage);
g_getMessage = NULL;
}
return 1;
}
static
LRESULT CALLBACK
getMessageHook(int code, WPARAM wParam, LPARAM lParam)
{
if (code >= 0) {
if (g_screenSaver) {
MSG* msg = reinterpret_cast<MSG*>(lParam);
if (msg->message == WM_SYSCOMMAND &&
msg->wParam == SC_SCREENSAVE) {
// broadcast screen saver started message
PostThreadMessage(g_threadID,
BARRIER_MSG_SCREEN_SAVER, TRUE, 0);
}
}
}
return CallNextHookEx(g_getMessage, code, wParam, lParam);
}
int
MSWindowsHook::installScreenSaver()
{
// must be initialized
if (g_threadID == 0) {
return 0;
}
// generate screen saver messages
g_screenSaver = true;
// install hook unless it's already installed
if (g_getMessage == NULL) {
g_getMessage = SetWindowsHookEx(WH_GETMESSAGE,
&getMessageHook,
NULL,
0);
}
return (g_getMessage != NULL) ? 1 : 0;
}
int
MSWindowsHook::uninstallScreenSaver()
{
// uninstall hook unless the mouse wheel hook is installed
if (g_getMessage != NULL) {
UnhookWindowsHookEx(g_getMessage);
g_getMessage = NULL;
}
// screen saver hook is no longer installed
g_screenSaver = false;
return 1;
}

15
src/lib/platform/MSWindowsHook.h
View File

@ -1,5 +1,6 @@
/* /*
* barrier -- mouse and keyboard sharing utility * barrier -- mouse and keyboard sharing utility
* Copyright (C) 2018 Debauchee Open Source Group
* Copyright (C) 2012-2016 Symless Ltd. * Copyright (C) 2012-2016 Symless Ltd.
* Copyright (C) 2011 Chris Schoeneman * Copyright (C) 2011 Chris Schoeneman
* *
@ -18,7 +19,7 @@
#pragma once #pragma once
#include "synwinhk/synwinhk.h" #include "platform/synwinhk.h"
#define WIN32_LEAN_AND_MEAN #define WIN32_LEAN_AND_MEAN
#include <Windows.h> #include <Windows.h>
@ -31,18 +32,14 @@ public:
virtual ~MSWindowsHook(); virtual ~MSWindowsHook();
void loadLibrary(); void loadLibrary();
HINSTANCE getInstance() const;
int init(DWORD threadID); int init(DWORD threadID);
int cleanup(); int cleanup();
void setSides(UInt32 sides); void setSides(UInt32 sides);
void setZone(SInt32 x, SInt32 y, SInt32 w, SInt32 h, SInt32 jumpZoneSize); void setZone(SInt32 x, SInt32 y, SInt32 w, SInt32 h, SInt32 jumpZoneSize);
void setMode(EHookMode mode); void setMode(EHookMode mode);
private: static EHookResult install();
InitFunc m_initFunc; static int uninstall();
CleanupFunc m_cleanupFunc; static int installScreenSaver();
SetSidesFunc m_setSidesFunc; static int uninstallScreenSaver();
SetZoneFunc m_setZoneFunc;
SetModeFunc m_setModeFunc;
HINSTANCE m_instance;
}; };

2
src/lib/platform/MSWindowsScreen.cpp
View File

@ -1,5 +1,6 @@
/* /*
* barrier -- mouse and keyboard sharing utility * barrier -- mouse and keyboard sharing utility
* Copyright (C) 2018 Debauchee Open Source Group
* Copyright (C) 2012-2016 Symless Ltd. * Copyright (C) 2012-2016 Symless Ltd.
* Copyright (C) 2002 Chris Schoeneman * Copyright (C) 2002 Chris Schoeneman
* *
@ -136,7 +137,6 @@ MSWindowsScreen::MSWindowsScreen(
m_desks = new MSWindowsDesks( m_desks = new MSWindowsDesks(
m_isPrimary, m_isPrimary,
m_noHooks, m_noHooks,
m_hook.getInstance(),
m_screensaver, m_screensaver,
m_events, m_events,
new TMethodJob<MSWindowsScreen>( new TMethodJob<MSWindowsScreen>(

3
src/lib/platform/MSWindowsScreen.h
View File

@ -1,5 +1,6 @@
/* /*
* barrier -- mouse and keyboard sharing utility * barrier -- mouse and keyboard sharing utility
* Copyright (C) 2018 Debauchee Open Source Group
* Copyright (C) 2012-2016 Symless Ltd. * Copyright (C) 2012-2016 Symless Ltd.
* Copyright (C) 2002 Chris Schoeneman * Copyright (C) 2002 Chris Schoeneman
* *
@ -21,7 +22,7 @@
#include "platform/MSWindowsHook.h" #include "platform/MSWindowsHook.h"
#include "barrier/PlatformScreen.h" #include "barrier/PlatformScreen.h"
#include "barrier/DragInformation.h" #include "barrier/DragInformation.h"
#include "synwinhk/synwinhk.h" #include "platform/synwinhk.h"
#include "mt/CondVar.h" #include "mt/CondVar.h"
#include "mt/Mutex.h" #include "mt/Mutex.h"
#include "base/String.h" #include "base/String.h"

22
src/lib/synwinhk/synwinhk.h → src/lib/platform/synwinhk.h
View File

@ -1,5 +1,6 @@
/* /*
* barrier -- mouse and keyboard sharing utility * barrier -- mouse and keyboard sharing utility
* Copyright (C) 2018 Debauchee Open Source Group
* Copyright (C) 2012-2016 Symless Ltd. * Copyright (C) 2012-2016 Symless Ltd.
* Copyright (C) 2002 Chris Schoeneman * Copyright (C) 2002 Chris Schoeneman
* *
@ -59,27 +60,6 @@ enum EHookMode {
kHOOK_RELAY_EVENTS kHOOK_RELAY_EVENTS
}; };
typedef int (*InitFunc)(DWORD targetQueueThreadID);
typedef int (*CleanupFunc)(void);
typedef EHookResult (*InstallFunc)(void);
typedef int (*UninstallFunc)(void);
typedef int (*InstallScreenSaverFunc)(void);
typedef int (*UninstallScreenSaverFunc)(void);
typedef void (*SetSidesFunc)(UInt32);
typedef void (*SetZoneFunc)(SInt32, SInt32, SInt32, SInt32, SInt32);
typedef void (*SetModeFunc)(int);
CBARRIERHOOK_API int init(DWORD);
CBARRIERHOOK_API int cleanup(void);
CBARRIERHOOK_API EHookResult install(void);
CBARRIERHOOK_API int uninstall(void);
CBARRIERHOOK_API int installScreenSaver(void);
CBARRIERHOOK_API int uninstallScreenSaver(void);
CBARRIERHOOK_API void setSides(UInt32 sides);
CBARRIERHOOK_API void setZone(SInt32 x, SInt32 y, SInt32 w, SInt32 h,
SInt32 jumpZoneSize);
CBARRIERHOOK_API void setMode(EHookMode mode);
/* REMOVED ImmuneKeys for migration of synwinhk out of DLL /* REMOVED ImmuneKeys for migration of synwinhk out of DLL
typedef void (*SetImmuneKeysFunc)(const DWORD*, std::size_t); typedef void (*SetImmuneKeysFunc)(const DWORD*, std::size_t);

27
src/lib/synwinhk/CMakeLists.txt
View File

@ -1,27 +0,0 @@
# barrier -- mouse and keyboard sharing utility
# Copyright (C) 2013-2016 Symless Ltd.
#
# This package is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# found in the file LICENSE that should have accompanied this file.
#
# This package 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/>.
file(GLOB headers "*.h")
file(GLOB sources "*.cpp")
if (BARRIER_ADD_HEADERS)
list(APPEND sources ${headers})
endif()
add_library(synwinhk SHARED ${sources})
if (NOT MSVC_VERSION VERSION_LESS 1900)
target_link_libraries(synwinhk libucrt)
endif()

873
src/lib/synwinhk/synwinhk.cpp
View File

@ -1,873 +0,0 @@
/*
* barrier -- mouse and keyboard sharing utility
* Copyright (C) 2012-2016 Symless Ltd.
* Copyright (C) 2002 Chris Schoeneman
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file LICENSE that should have accompanied this file.
*
* This package 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/>.
*/
/* REMOVED ImmuneKeys for migration of synwinhk out of DLL
// because all of our global data is shared between processes,
// allocating shared data on-the-fly is tricky. therefore let's
// store all of our immune keys in a pre-allocated array. the
// downside here is that we have to pick a maximum number of
// immune keys to store. who would ever want barrier to ignore
// more than 32 keys on their keyboard??
struct ImmuneKeys
{
static const std::size_t MaxKeys = 32;
DWORD list[MaxKeys];
std::size_t count;
};
static ImmuneKeys g_immuneKeys{ {0}, 0 };
inline static
bool is_immune_key(DWORD target)
{
for (std::size_t idx = 0; idx < g_immuneKeys.count; ++idx) {
if (g_immuneKeys.list[idx] == target)
return true;
}
return false;
}
// allow all immune keys to pass without filtering
if (is_immune_key(static_cast<DWORD>(wParam)))
return false;
// do not call this while the hooks are active!
void
setImmuneKeys(const DWORD *list, std::size_t size)
{
if (size > ImmuneKeys::MaxKeys)
size = ImmuneKeys::MaxKeys;
g_immuneKeys.count = size;
if (size > 0) {
for (std::size_t idx = 0; idx < size; ++idx)
g_immuneKeys.list[idx] = list[idx];
}
}
*/
#include "synwinhk/synwinhk.h"
#include "barrier/protocol_types.h"
#include <tchar.h>
#undef assert
#if _DEBUG
#define assert(_X_) if (!(_X_)) __debugbreak()
#else
#define assert(_X_) __noop()
#endif
//
// debugging compile flag. when not zero the server doesn't grab
// the keyboard when the mouse leaves the server screen. this
// makes it possible to use the debugger (via the keyboard) when
// all user input would normally be caught by the hook procedures.
//
#define NO_GRAB_KEYBOARD 0
//
// globals
//
#if defined(_MSC_VER)
#pragma comment(linker, "-section:shared,rws")
#pragma data_seg("shared")
#endif
// all data in this shared section *must* be initialized
static HINSTANCE g_hinstance = NULL;
static DWORD g_processID = 0;
static DWORD g_threadID = 0;
static HHOOK g_getMessage = NULL;
static HHOOK g_keyboardLL = NULL;
static HHOOK g_mouseLL = NULL;
static bool g_screenSaver = false;
static EHookMode g_mode = kHOOK_DISABLE;
static UInt32 g_zoneSides = 0;
static SInt32 g_zoneSize = 0;
static SInt32 g_xScreen = 0;
static SInt32 g_yScreen = 0;
static SInt32 g_wScreen = 0;
static SInt32 g_hScreen = 0;
static WPARAM g_deadVirtKey = 0;
static WPARAM g_deadRelease = 0;
static LPARAM g_deadLParam = 0;
static BYTE g_deadKeyState[256] = { 0 };
static BYTE g_keyState[256] = { 0 };
static DWORD g_hookThread = 0;
static bool g_fakeInput = false;
#if defined(_MSC_VER)
#pragma data_seg()
#endif
// keep linker quiet about floating point stuff. we don't use any
// floating point operations but our includes may define some
// (unused) floating point values.
#ifndef _DEBUG
extern "C" {
int _fltused=0;
}
#endif
#if !NO_GRAB_KEYBOARD
static
WPARAM
makeKeyMsg(UINT virtKey, char c, bool noAltGr)
{
return MAKEWPARAM(MAKEWORD(virtKey & 0xff, (BYTE)c), noAltGr ? 1 : 0);
}
static
void
keyboardGetState(BYTE keys[256], DWORD vkCode, bool kf_up)
{
// we have to use GetAsyncKeyState() rather than GetKeyState() because
// we don't pass through most keys so the event synchronous state
// doesn't get updated. we do that because certain modifier keys have
// side effects, like alt and the windows key.
if (vkCode < 0 || vkCode >= 256) {
return;
}
// Keep track of key state on our own in case GetAsyncKeyState() fails
g_keyState[vkCode] = kf_up ? 0 : 0x80;
g_keyState[VK_SHIFT] = g_keyState[VK_LSHIFT] | g_keyState[VK_RSHIFT];
SHORT key;
// Test whether GetAsyncKeyState() is being honest with us
key = GetAsyncKeyState(vkCode);
if (key & 0x80) {
// The only time we know for sure that GetAsyncKeyState() is working
// is when it tells us that the current key is down.
// In this case, update g_keyState to reflect what GetAsyncKeyState()
// is telling us, just in case we have gotten out of sync
for (int i = 0; i < 256; ++i) {
key = GetAsyncKeyState(i);
g_keyState[i] = (BYTE)((key < 0) ? 0x80u : 0);
}
}
// copy g_keyState to keys
for (int i = 0; i < 256; ++i) {
keys[i] = g_keyState[i];
}
key = GetKeyState(VK_CAPITAL);
keys[VK_CAPITAL] = (BYTE)(((key < 0) ? 0x80 : 0) | (key & 1));
}
static
bool
keyboardHookHandler(WPARAM wParam, LPARAM lParam)
{
DWORD vkCode = static_cast<DWORD>(wParam);
bool kf_up = (lParam & (KF_UP << 16)) != 0;
// check for special events indicating if we should start or stop
// passing events through and not report them to the server. this
// is used to allow the server to synthesize events locally but
// not pick them up as user events.
if (wParam == BARRIER_HOOK_FAKE_INPUT_VIRTUAL_KEY &&
((lParam >> 16) & 0xffu) == BARRIER_HOOK_FAKE_INPUT_SCANCODE) {
// update flag
g_fakeInput = ((lParam & 0x80000000u) == 0);
PostThreadMessage(g_threadID, BARRIER_MSG_DEBUG,
0xff000000u | wParam, lParam);
// discard event
return true;
}
// if we're expecting fake input then just pass the event through
// and do not forward to the server
if (g_fakeInput) {
PostThreadMessage(g_threadID, BARRIER_MSG_DEBUG,
0xfe000000u | wParam, lParam);
return false;
}
// VK_RSHIFT may be sent with an extended scan code but right shift
// is not an extended key so we reset that bit.
if (wParam == VK_RSHIFT) {
lParam &= ~0x01000000u;
}
// tell server about event
PostThreadMessage(g_threadID, BARRIER_MSG_DEBUG, wParam, lParam);
// ignore dead key release
if ((g_deadVirtKey == wParam || g_deadRelease == wParam) &&
(lParam & 0x80000000u) != 0) {
g_deadRelease = 0;
PostThreadMessage(g_threadID, BARRIER_MSG_DEBUG,
wParam | 0x04000000, lParam);
return false;
}
// we need the keyboard state for ToAscii()
BYTE keys[256];
keyboardGetState(keys, vkCode, kf_up);
// ToAscii() maps ctrl+letter to the corresponding control code
// and ctrl+backspace to delete. we don't want those translations
// so clear the control modifier state. however, if we want to
// simulate AltGr (which is ctrl+alt) then we must not clear it.
UINT control = keys[VK_CONTROL] | keys[VK_LCONTROL] | keys[VK_RCONTROL];
UINT menu = keys[VK_MENU] | keys[VK_LMENU] | keys[VK_RMENU];
if ((control & 0x80) == 0 || (menu & 0x80) == 0) {
keys[VK_LCONTROL] = 0;
keys[VK_RCONTROL] = 0;
keys[VK_CONTROL] = 0;
}
else {
keys[VK_LCONTROL] = 0x80;
keys[VK_RCONTROL] = 0x80;
keys[VK_CONTROL] = 0x80;
keys[VK_LMENU] = 0x80;
keys[VK_RMENU] = 0x80;
keys[VK_MENU] = 0x80;
}
// ToAscii() needs to know if a menu is active for some reason.
// we don't know and there doesn't appear to be any way to find
// out. so we'll just assume a menu is active if the menu key
// is down.
// FIXME -- figure out some way to check if a menu is active
UINT flags = 0;
if ((menu & 0x80) != 0)
flags |= 1;
// if we're on the server screen then just pass numpad keys with alt
// key down as-is. we won't pick up the resulting character but the
// local app will. if on a client screen then grab keys as usual;
// if the client is a windows system it'll synthesize the expected
// character. if not then it'll probably just do nothing.
if (g_mode != kHOOK_RELAY_EVENTS) {
// we don't use virtual keys because we don't know what the
// state of the numlock key is. we'll hard code the scan codes
// instead. hopefully this works across all keyboards.
UINT sc = (lParam & 0x01ff0000u) >> 16;
if (menu &&
(sc >= 0x47u && sc <= 0x52u && sc != 0x4au && sc != 0x4eu)) {
return false;
}
}
WORD c = 0;
// map the key event to a character. we have to put the dead
// key back first and this has the side effect of removing it.
if (g_deadVirtKey != 0) {
if (ToAscii((UINT)g_deadVirtKey, (g_deadLParam & 0x10ff0000u) >> 16,
g_deadKeyState, &c, flags) == 2)
{
// If ToAscii returned 2, it means that we accidentally removed
// a double dead key instead of restoring it. Thus, we call
// ToAscii again with the same parameters to restore the
// internal dead key state.
ToAscii((UINT)g_deadVirtKey, (g_deadLParam & 0x10ff0000u) >> 16,
g_deadKeyState, &c, flags);
// We need to keep track of this because g_deadVirtKey will be
// cleared later on; this would cause the dead key release to
// incorrectly restore the dead key state.
g_deadRelease = g_deadVirtKey;
}
}
UINT scanCode = ((lParam & 0x10ff0000u) >> 16);
int n = ToAscii((UINT)wParam, scanCode, keys, &c, flags);
// if mapping failed and ctrl and alt are pressed then try again
// with both not pressed. this handles the case where ctrl and
// alt are being used as individual modifiers rather than AltGr.
// we note that's the case in the message sent back to barrier
// because there's no simple way to deduce it after the fact.
// we have to put the dead key back first, if there was one.
bool noAltGr = false;
if (n == 0 && (control & 0x80) != 0 && (menu & 0x80) != 0) {
noAltGr = true;
PostThreadMessage(g_threadID, BARRIER_MSG_DEBUG,
wParam | 0x05000000, lParam);
if (g_deadVirtKey != 0) {
if (ToAscii((UINT)g_deadVirtKey, (g_deadLParam & 0x10ff0000u) >> 16,
g_deadKeyState, &c, flags) == 2)
{
ToAscii((UINT)g_deadVirtKey, (g_deadLParam & 0x10ff0000u) >> 16,
g_deadKeyState, &c, flags);
g_deadRelease = g_deadVirtKey;
}
}
BYTE keys2[256];
for (size_t i = 0; i < sizeof(keys) / sizeof(keys[0]); ++i) {
keys2[i] = keys[i];
}
keys2[VK_LCONTROL] = 0;
keys2[VK_RCONTROL] = 0;
keys2[VK_CONTROL] = 0;
keys2[VK_LMENU] = 0;
keys2[VK_RMENU] = 0;
keys2[VK_MENU] = 0;
n = ToAscii((UINT)wParam, scanCode, keys2, &c, flags);
}
PostThreadMessage(g_threadID, BARRIER_MSG_DEBUG,
wParam | ((c & 0xff) << 8) |
((n & 0xff) << 16) | 0x06000000,
lParam);
WPARAM charAndVirtKey = 0;
bool clearDeadKey = false;
switch (n) {
default:
// key is a dead key
if (lParam & 0x80000000u)
// This handles the obscure situation where a key has been
// pressed which is both a dead key and a normal character
// depending on which modifiers have been pressed. We
// break here to prevent it from being considered a dead
// key.
break;
g_deadVirtKey = wParam;
g_deadLParam = lParam;
for (size_t i = 0; i < sizeof(keys) / sizeof(keys[0]); ++i) {
g_deadKeyState[i] = keys[i];
}
break;
case 0:
// key doesn't map to a character. this can happen if
// non-character keys are pressed after a dead key.
charAndVirtKey = makeKeyMsg((UINT)wParam, (char)0, noAltGr);
break;
case 1:
// key maps to a character composed with dead key
charAndVirtKey = makeKeyMsg((UINT)wParam, (char)LOBYTE(c), noAltGr);
clearDeadKey = true;
break;
case 2: {
// previous dead key not composed. send a fake key press
// and release for the dead key to our window.
WPARAM deadCharAndVirtKey =
makeKeyMsg((UINT)g_deadVirtKey, (char)LOBYTE(c), noAltGr);
PostThreadMessage(g_threadID, BARRIER_MSG_KEY,
deadCharAndVirtKey, g_deadLParam & 0x7fffffffu);
PostThreadMessage(g_threadID, BARRIER_MSG_KEY,
deadCharAndVirtKey, g_deadLParam | 0x80000000u);
// use uncomposed character
charAndVirtKey = makeKeyMsg((UINT)wParam, (char)HIBYTE(c), noAltGr);
clearDeadKey = true;
break;
}
}
// put back the dead key, if any, for the application to use
if (g_deadVirtKey != 0) {
ToAscii((UINT)g_deadVirtKey, (g_deadLParam & 0x10ff0000u) >> 16,
g_deadKeyState, &c, flags);
}
// clear out old dead key state
if (clearDeadKey) {
g_deadVirtKey = 0;
g_deadLParam = 0;
}
// forward message to our window. do this whether or not we're
// forwarding events to clients because this'll keep our thread's
// key state table up to date. that's important for querying
// the scroll lock toggle state.
// XXX -- with hot keys for actions we may only need to do this when
// forwarding.
if (charAndVirtKey != 0) {
PostThreadMessage(g_threadID, BARRIER_MSG_DEBUG,
charAndVirtKey | 0x07000000, lParam);
PostThreadMessage(g_threadID, BARRIER_MSG_KEY, charAndVirtKey, lParam);
}
if (g_mode == kHOOK_RELAY_EVENTS) {
// let certain keys pass through
switch (wParam) {
case VK_CAPITAL:
case VK_NUMLOCK:
case VK_SCROLL:
// pass event on. we want to let these through to
// the window proc because otherwise the keyboard
// lights may not stay synchronized.
break;
case VK_HANGUL:
// pass these modifiers if using a low level hook, discard
// them if not.
if (g_hookThread == 0) {
return true;
}
break;
default:
// discard
return true;
}
}
return false;
}
#endif
static
bool
mouseHookHandler(WPARAM wParam, SInt32 x, SInt32 y, SInt32 data)
{
switch (wParam) {
case WM_LBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_XBUTTONDOWN:
case WM_LBUTTONDBLCLK:
case WM_MBUTTONDBLCLK:
case WM_RBUTTONDBLCLK:
case WM_XBUTTONDBLCLK:
case WM_LBUTTONUP:
case WM_MBUTTONUP:
case WM_RBUTTONUP:
case WM_XBUTTONUP:
case WM_NCLBUTTONDOWN:
case WM_NCMBUTTONDOWN:
case WM_NCRBUTTONDOWN:
case WM_NCXBUTTONDOWN:
case WM_NCLBUTTONDBLCLK:
case WM_NCMBUTTONDBLCLK:
case WM_NCRBUTTONDBLCLK:
case WM_NCXBUTTONDBLCLK:
case WM_NCLBUTTONUP:
case WM_NCMBUTTONUP:
case WM_NCRBUTTONUP:
case WM_NCXBUTTONUP:
// always relay the event. eat it if relaying.
PostThreadMessage(g_threadID, BARRIER_MSG_MOUSE_BUTTON, wParam, data);
return (g_mode == kHOOK_RELAY_EVENTS);
case WM_MOUSEWHEEL:
if (g_mode == kHOOK_RELAY_EVENTS) {
// relay event
PostThreadMessage(g_threadID, BARRIER_MSG_MOUSE_WHEEL, data, 0);
}
return (g_mode == kHOOK_RELAY_EVENTS);
case WM_NCMOUSEMOVE:
case WM_MOUSEMOVE:
if (g_mode == kHOOK_RELAY_EVENTS) {
// relay and eat event
PostThreadMessage(g_threadID, BARRIER_MSG_MOUSE_MOVE, x, y);
return true;
}
else if (g_mode == kHOOK_WATCH_JUMP_ZONE) {
// low level hooks can report bogus mouse positions that are
// outside of the screen. jeez. naturally we end up getting
// fake motion in the other direction to get the position back
// on the screen, which plays havoc with switch on double tap.
// Server deals with that. we'll clamp positions onto the
// screen. also, if we discard events for positions outside
// of the screen then the mouse appears to get a bit jerky
// near the edge. we can either accept that or pass the bogus
// events. we'll try passing the events.
bool bogus = false;
if (x < g_xScreen) {
x = g_xScreen;
bogus = true;
}
else if (x >= g_xScreen + g_wScreen) {
x = g_xScreen + g_wScreen - 1;
bogus = true;
}
if (y < g_yScreen) {
y = g_yScreen;
bogus = true;
}
else if (y >= g_yScreen + g_hScreen) {
y = g_yScreen + g_hScreen - 1;
bogus = true;
}
// check for mouse inside jump zone
bool inside = false;
if (!inside && (g_zoneSides & kLeftMask) != 0) {
inside = (x < g_xScreen + g_zoneSize);
}
if (!inside && (g_zoneSides & kRightMask) != 0) {
inside = (x >= g_xScreen + g_wScreen - g_zoneSize);
}
if (!inside && (g_zoneSides & kTopMask) != 0) {
inside = (y < g_yScreen + g_zoneSize);
}
if (!inside && (g_zoneSides & kBottomMask) != 0) {
inside = (y >= g_yScreen + g_hScreen - g_zoneSize);
}
// relay the event
PostThreadMessage(g_threadID, BARRIER_MSG_MOUSE_MOVE, x, y);
// if inside and not bogus then eat the event
return inside && !bogus;
}
}
// pass the event
return false;
}
static
LRESULT CALLBACK
getMessageHook(int code, WPARAM wParam, LPARAM lParam)
{
if (code >= 0) {
if (g_screenSaver) {
MSG* msg = reinterpret_cast<MSG*>(lParam);
if (msg->message == WM_SYSCOMMAND &&
msg->wParam == SC_SCREENSAVE) {
// broadcast screen saver started message
PostThreadMessage(g_threadID,
BARRIER_MSG_SCREEN_SAVER, TRUE, 0);
}
}
}
return CallNextHookEx(g_getMessage, code, wParam, lParam);
}
//
// low-level keyboard hook -- this allows us to capture and handle
// alt+tab, alt+esc, ctrl+esc, and windows key hot keys. on the down
// side, key repeats are not reported to us.
//
#if !NO_GRAB_KEYBOARD
static
LRESULT CALLBACK
keyboardLLHook(int code, WPARAM wParam, LPARAM lParam)
{
if (code >= 0) {
// decode the message
KBDLLHOOKSTRUCT* info = reinterpret_cast<KBDLLHOOKSTRUCT*>(lParam);
WPARAM wParam = info->vkCode;
LPARAM lParam = 1; // repeat code
lParam |= (info->scanCode << 16); // scan code
if (info->flags & LLKHF_EXTENDED) {
lParam |= (1lu << 24); // extended key
}
if (info->flags & LLKHF_ALTDOWN) {
lParam |= (1lu << 29); // context code
}
if (info->flags & LLKHF_UP) {
lParam |= (1lu << 31); // transition
}
// FIXME -- bit 30 should be set if key was already down but
// we don't know that info. as a result we'll never generate
// key repeat events.
// handle the message
if (keyboardHookHandler(wParam, lParam)) {
return 1;
}
}
return CallNextHookEx(g_keyboardLL, code, wParam, lParam);
}
#endif
//
// low-level mouse hook -- this allows us to capture and handle mouse
// events very early. the earlier the better.
//
static
LRESULT CALLBACK
mouseLLHook(int code, WPARAM wParam, LPARAM lParam)
{
if (code >= 0) {
// decode the message
MSLLHOOKSTRUCT* info = reinterpret_cast<MSLLHOOKSTRUCT*>(lParam);
SInt32 x = static_cast<SInt32>(info->pt.x);
SInt32 y = static_cast<SInt32>(info->pt.y);
SInt32 w = static_cast<SInt16>(HIWORD(info->mouseData));
// handle the message
if (mouseHookHandler(wParam, x, y, w)) {
return 1;
}
}
return CallNextHookEx(g_mouseLL, code, wParam, lParam);
}
//
// external functions
//
BOOL WINAPI
DllMain(HINSTANCE instance, DWORD reason, LPVOID)
{
if (reason == DLL_PROCESS_ATTACH) {
DisableThreadLibraryCalls(instance);
if (g_processID == 0) {
g_hinstance = instance;
g_processID = GetCurrentProcessId();
}
}
else if (reason == DLL_PROCESS_DETACH) {
if (g_processID == GetCurrentProcessId()) {
uninstall();
uninstallScreenSaver();
g_processID = 0;
g_hinstance = NULL;
}
}
return TRUE;
}
extern "C" {
BOOL WINAPI _DllMainCRTStartup(
HINSTANCE instance, DWORD reason, LPVOID lpreserved)
{
return DllMain(instance, reason, lpreserved);
}
int
init(DWORD threadID)
{
assert(g_hinstance != NULL);
// try to open process that last called init() to see if it's
// still running or if it died without cleaning up.
if (g_processID != 0 && g_processID != GetCurrentProcessId()) {
HANDLE process = OpenProcess(STANDARD_RIGHTS_REQUIRED,
FALSE, g_processID);
if (process != NULL) {
// old process (probably) still exists so refuse to
// reinitialize this DLL (and thus steal it from the
// old process).
int result = CloseHandle(process);
if (result == false) {
return 0;
}
}
// clean up after old process. the system should've already
// removed the hooks so we just need to reset our state.
g_hinstance = GetModuleHandle(_T("synwinhk"));
g_processID = GetCurrentProcessId();
g_threadID = 0;
g_getMessage = NULL;
g_keyboardLL = NULL;
g_mouseLL = NULL;
g_screenSaver = false;
}
// save thread id. we'll post messages to this thread's
// message queue.
g_threadID = threadID;
// set defaults
g_mode = kHOOK_DISABLE;
g_zoneSides = 0;
g_zoneSize = 0;
g_xScreen = 0;
g_yScreen = 0;
g_wScreen = 0;
g_hScreen = 0;
return 1;
}
int
cleanup(void)
{
assert(g_hinstance != NULL);
if (g_processID == GetCurrentProcessId()) {
g_threadID = 0;
}
return 1;
}
EHookResult
install()
{
assert(g_hinstance != NULL);
assert(g_getMessage == NULL || g_screenSaver);
// must be initialized
if (g_threadID == 0) {
return kHOOK_FAILED;
}
// discard old dead keys
g_deadVirtKey = 0;
g_deadLParam = 0;
// reset fake input flag
g_fakeInput = false;
// install low-level hooks. we require that they both get installed.
g_mouseLL = SetWindowsHookEx(WH_MOUSE_LL,
&mouseLLHook,
g_hinstance,
0);
#if !NO_GRAB_KEYBOARD
g_keyboardLL = SetWindowsHookEx(WH_KEYBOARD_LL,
&keyboardLLHook,
g_hinstance,
0);
if (g_mouseLL == NULL || g_keyboardLL == NULL) {
if (g_keyboardLL != NULL) {
UnhookWindowsHookEx(g_keyboardLL);
g_keyboardLL = NULL;
}
if (g_mouseLL != NULL) {
UnhookWindowsHookEx(g_mouseLL);
g_mouseLL = NULL;
}
}
#endif
// check that we got all the hooks we wanted
if ((g_mouseLL == NULL) ||
#if !NO_GRAB_KEYBOARD
(g_keyboardLL == NULL)
#endif
) {
uninstall();
return kHOOK_FAILED;
}
if (g_keyboardLL != NULL || g_mouseLL != NULL) {
g_hookThread = GetCurrentThreadId();
return kHOOK_OKAY_LL;
}
return kHOOK_OKAY;
}
int
uninstall(void)
{
assert(g_hinstance != NULL);
// discard old dead keys
g_deadVirtKey = 0;
g_deadLParam = 0;
// uninstall hooks
if (g_keyboardLL != NULL) {
UnhookWindowsHookEx(g_keyboardLL);
g_keyboardLL = NULL;
}
if (g_mouseLL != NULL) {
UnhookWindowsHookEx(g_mouseLL);
g_mouseLL = NULL;
}
if (g_getMessage != NULL && !g_screenSaver) {
UnhookWindowsHookEx(g_getMessage);
g_getMessage = NULL;
}
return 1;
}
int
installScreenSaver(void)
{
assert(g_hinstance != NULL);
// must be initialized
if (g_threadID == 0) {
return 0;
}
// generate screen saver messages
g_screenSaver = true;
// install hook unless it's already installed
if (g_getMessage == NULL) {
g_getMessage = SetWindowsHookEx(WH_GETMESSAGE,
&getMessageHook,
g_hinstance,
0);
}
return (g_getMessage != NULL) ? 1 : 0;
}
int
uninstallScreenSaver(void)
{
assert(g_hinstance != NULL);
// uninstall hook unless the mouse wheel hook is installed
if (g_getMessage != NULL) {
UnhookWindowsHookEx(g_getMessage);
g_getMessage = NULL;
}
// screen saver hook is no longer installed
g_screenSaver = false;
return 1;
}
void
setSides(UInt32 sides)
{
g_zoneSides = sides;
}
void
setZone(SInt32 x, SInt32 y, SInt32 w, SInt32 h, SInt32 jumpZoneSize)
{
g_zoneSize = jumpZoneSize;
g_xScreen = x;
g_yScreen = y;
g_wScreen = w;
g_hScreen = h;
}
void
setMode(EHookMode mode)
{
if (mode == g_mode) {
// no change
return;
}
g_mode = mode;
}
}

2
src/test/integtests/platform/MSWindowsKeyStateTests.cpp
View File

@ -52,7 +52,7 @@ protected:
MSWindowsDesks* newDesks(IEventQueue* eventQueue) MSWindowsDesks* newDesks(IEventQueue* eventQueue)
{ {
return new MSWindowsDesks( return new MSWindowsDesks(
true, false, m_hook.getInstance(), m_screensaver, eventQueue, true, false, m_screensaver, eventQueue,
new TMethodJob<MSWindowsKeyStateTests>( new TMethodJob<MSWindowsKeyStateTests>(
this, &MSWindowsKeyStateTests::updateKeysCB), false); this, &MSWindowsKeyStateTests::updateKeysCB), false);
} }