- Log out dragging file's directory in Synergy (using COM shell extension)

- Change shell extension dll Main.cpp to synwinxt.cpp

src/cmd/synergyc/CMakeLists.txt

@@ -48,6 +48,7 @@ set(inc
 	../../lib/platform
 	../../lib/synergy
 	../../lib/synwinhk
+	../../lib/synwinxt
 )
 
 if (UNIX)

src/cmd/synergyp/CMakeLists.txt

@@ -48,6 +48,7 @@ set(inc
 	../../lib/synergy
 	../../lib/server
 	../../lib/synwinhk
+	../../lib/synwinxt
 )
 
 if (UNIX)

src/cmd/synergys/CMakeLists.txt

@@ -48,6 +48,7 @@ set(inc
 	../../lib/synergy
 	../../lib/server
 	../../lib/synwinhk
+	../../lib/synwinxt
 )
 
 if (UNIX)

src/lib/platform/CMSWindowsHookLibraryLoader.cpp

@@ -25,7 +25,8 @@ CMSWindowsHookLibraryLoader::CMSWindowsHookLibraryLoader() :
 	m_cleanup(NULL),
 	m_setSides(NULL),
 	m_setZone(NULL),
-	m_setMode(NULL)
+	m_setMode(NULL),
+	m_getDraggingFileDir(NULL)
 {
 }
 
@@ -68,3 +69,24 @@ CMSWindowsHookLibraryLoader::openHookLibrary(const char* name)
 
 	return hookLibrary;
 }
+
+HINSTANCE
+CMSWindowsHookLibraryLoader::openShellLibrary(const char* name)
+{
+	// load the hook library
+	HINSTANCE shellLibrary = LoadLibrary(name);
+	if (shellLibrary == NULL) {
+		LOG((CLOG_ERR "failed to load shell library, %s.dll is missing or invalid", name));
+		throw XScreenOpenFailure();
+	}
+
+	// look up functions
+	m_getDraggingFileDir = (GetDraggingFileDir)GetProcAddress(shellLibrary, "getDraggingFileDir");
+
+	if (m_getDraggingFileDir == NULL) {
+			LOG((CLOG_ERR "invalid shell library, use a newer %s.dll", name));
+			throw XScreenOpenFailure();
+	}
+
+	return shellLibrary;
+}

src/lib/platform/CMSWindowsHookLibraryLoader.h

@@ -22,6 +22,7 @@
 #define WIN32_LEAN_AND_MEAN
 #include <Windows.h>
 #include "synwinhk.h"
+#include "synwinxt.h"
 
 //! Loads Windows hook DLLs.
 class CMSWindowsHookLibraryLoader
@@ -31,6 +32,7 @@ public:
 	virtual ~CMSWindowsHookLibraryLoader();
 
 	HINSTANCE			openHookLibrary(const char* name);
+	HINSTANCE			openShellLibrary(const char* name);
 
 	// TODO: either make these private or expose properly
 	InitFunc			m_init;
@@ -39,8 +41,7 @@ public:
 	SetZoneFunc			m_setZone;
 	SetModeFunc			m_setMode;
 
-private:
-	HINSTANCE			m_hookLibrary;
+	GetDraggingFileDir	m_getDraggingFileDir;
 };
 
 #endif

src/lib/platform/CMSWindowsScreen.cpp

@@ -110,9 +110,11 @@ CMSWindowsScreen::CMSWindowsScreen(
 	m_ownClipboard(false),
 	m_desks(NULL),
 	m_hookLibrary(NULL),
+	m_shellLibrary(NULL),
 	m_keyState(NULL),
 	m_hasMouse(GetSystemMetrics(SM_MOUSEPRESENT) != 0),
 	m_showingMouse(false),
+	m_startDragging(false),
 	m_events(events)
 {
 	assert(s_windowInstance != NULL);
@@ -122,6 +124,7 @@ CMSWindowsScreen::CMSWindowsScreen(
 	try {
 		if (m_isPrimary && !m_noHooks) {
 			m_hookLibrary = openHookLibrary("synwinhk");
+			m_shellLibrary = openShellLibrary("synwinxt");
 		}
 		m_screensaver = new CMSWindowsScreenSaver();
 		m_desks       = new CMSWindowsDesks(
@@ -149,6 +152,9 @@ CMSWindowsScreen::CMSWindowsScreen(
 		if (m_hookLibrary != NULL)
 			closeHookLibrary(m_hookLibrary);
 
+		if (m_shellLibrary != NULL)
+			closeHookLibrary(m_shellLibrary);
+
 		s_screen = NULL;
 		throw;
 	}
@@ -178,6 +184,9 @@ CMSWindowsScreen::~CMSWindowsScreen()
 	if (m_hookLibrary != NULL)
 		closeHookLibrary(m_hookLibrary);
 
+	if (m_shellLibrary != NULL)
+		closeHookLibrary(m_shellLibrary);
+
 	s_screen = NULL;
 }
 
@@ -751,6 +760,12 @@ CMSWindowsScreen::openHookLibrary(const char* name)
 	return m_hookLibraryLoader.openHookLibrary(name);
 }
 
+HINSTANCE
+CMSWindowsScreen::openShellLibrary(const char* name)
+{
+	return m_hookLibraryLoader.openShellLibrary(name);
+}
+
 void
 CMSWindowsScreen::closeHookLibrary(HINSTANCE hookLibrary) const
 {
@@ -1261,6 +1276,9 @@ CMSWindowsScreen::onMouseButton(WPARAM wParam, LPARAM lParam)
 		}
 		else {
 			m_buttons[button] = false;
+			if (m_startDragging && button == kButtonLeft) {
+				m_startDragging = false;
+			}
 		}
 	}
 
@@ -1321,6 +1339,15 @@ CMSWindowsScreen::onMouseMove(SInt32 mx, SInt32 my)
 		sendEvent(
 			m_events->forIPrimaryScreen().motionOnPrimary(),
 			CMotionInfo::alloc(m_xCursor, m_yCursor));
+
+		if (m_buttons[kButtonLeft] == true && m_startDragging == false) {
+			// temporarily log out dragging file directory
+			char dir[MAX_PATH];
+			m_hookLibraryLoader.m_getDraggingFileDir(dir);
+			LOG((CLOG_DEBUG "dragging file: %s", dir));
+
+			m_startDragging = true;
+		}
 	}
 	else 
 	{

src/lib/platform/CMSWindowsScreen.h

@@ -125,6 +125,7 @@ protected:
 private:
 	// initialization and shutdown operations
 	HINSTANCE			openHookLibrary(const char* name);
+	HINSTANCE			openShellLibrary(const char* name);
 	void				closeHookLibrary(HINSTANCE hookLibrary) const;
 	HCURSOR				createBlankCursor() const;
 	void				destroyCursor(HCURSOR cursor) const;
@@ -286,6 +287,7 @@ private:
 
 	// hook library stuff
 	HINSTANCE			m_hookLibrary;
+	HINSTANCE			m_shellLibrary;
 
 	// keyboard stuff
 	CMSWindowsKeyState*	m_keyState;
@@ -323,6 +325,8 @@ private:
 						s_screen;
 	
 	IEventQueue*		m_events;
+
+	bool				m_startDragging;
 };
 
 #endif

src/lib/platform/CMakeLists.txt

@@ -101,6 +101,7 @@ set(inc
 	../net
 	../io
 	../synwinhk
+	../synwinxt
 )
 
 if (UNIX)

src/lib/synergy/CMakeLists.txt

@@ -105,6 +105,7 @@ set(inc
 	../server
 	../synergy
 	../synwinhk
+	../synwinxt
 	../..
 	../../../tools
 )

src/lib/synwinxt/CDataHandlerExtension.cpp

@@ -21,6 +21,7 @@
 
 extern LONG g_refCount;
 extern GUID g_CLSID;
+extern void updateDraggingDir(char*);
 extern void outputDebugStringF(const char *str, ...);
 
 CDataHandlerExtension::CDataHandlerExtension()
@@ -64,8 +65,11 @@ CDataHandlerExtension::Release()
 HRESULT STDMETHODCALLTYPE
 CDataHandlerExtension::Load(__RPC__in LPCOLESTR pszFileName, DWORD dwMode)
 {
-	StringCchCopyW(m_selectedFileName, ARRAYSIZE(m_selectedFileName), pszFileName);
-	outputDebugStringF("DataHandlerDemo: CDataHandlerExtension::Load: m_selectedFileName=%ls", m_selectedFileName);
+	char selectedFileDir[MAX_PATH];
+	StringCchCopyW(m_selectedFileDir, ARRAYSIZE(m_selectedFileDir), pszFileName);
+	WideCharToMultiByte(CP_ACP, 0, m_selectedFileDir, -1, selectedFileDir, MAX_PATH, NULL, NULL);
+	updateDraggingDir(selectedFileDir);
+	
 	return S_OK;
 }
 

src/lib/synwinxt/CDataHandlerExtension.h

@@ -53,5 +53,5 @@ public:
 
 private:
 	LONG m_refCount;
-	WCHAR m_selectedFileName[MAX_PATH];
+	WCHAR m_selectedFileDir[MAX_PATH];
 };

src/lib/synwinxt/CMakeLists.txt

@@ -16,13 +16,14 @@
 set(inc
 	CClassFactory.h
 	CDataHandlerExtension.h
+	synwinxt.h
 )
 
 set(src
 	CClassFactory.cpp
 	CDataHandlerExtension.cpp
+	synwinxt.cpp
 	synwinxt.def
-	Main.cpp
 )
 
 list(APPEND src

src/lib/synwinxt/synwinxt.cpp

@@ -15,6 +15,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "synwinxt.h"
 #include "CClassFactory.h"
 #include "CArchMiscWindows.h"
 #include <strsafe.h>
@@ -22,6 +23,17 @@
 
 #pragma comment(lib, "Shlwapi.lib")
 
+#if defined(_MSC_VER)
+#pragma comment(linker, "-section:sharedData,rws")
+#pragma data_seg("sharedData")
+#endif
+
+static BYTE g_draggingFileDir[MAX_PATH] = { 0 };
+
+#if defined(_MSC_VER)
+#pragma data_seg()
+#endif
+
 // {1BE208B1-BC21-4E39-8BB6-A5DC3F51479E}
 GUID g_CLSID = {0x1be208b1, 0xbc21, 0x4e39, {0x8b, 0xb6, 0xa5, 0xdc, 0x3f, 0x51, 0x47, 0x9e}};
 LONG g_refCount = 0;
@@ -217,8 +229,7 @@ unregisterShellExtDataHandler(CHAR* fileType, const CLSID& clsid)
 	CHAR subkey[MAX_PATH];
 
 	// Remove the HKCR\<File Type>\shellex\DataHandler key.
-	hr = StringCchPrintf(subkey, ARRAYSIZE(subkey), 
-		"%s\\shellex\\DataHandler", fileType);
+	hr = StringCchPrintf(subkey, ARRAYSIZE(subkey), "%s\\shellex\\DataHandler", fileType);
 	if (SUCCEEDED(hr)) {
 		hr = HRESULT_FROM_WIN32(RegDeleteTree(HKEY_CLASSES_ROOT, subkey));
 	}
@@ -237,3 +248,16 @@ outputDebugStringF(const char *str, ...)
 
 	OutputDebugStringA(buf);
 }
+
+void
+updateDraggingDir(char* dir)
+{
+	memcpy(g_draggingFileDir, dir, MAX_PATH);
+	outputDebugStringF("draggingFileDir: %s", g_draggingFileDir);
+}
+
+void
+getDraggingFileDir(char* dir)
+{
+	memcpy(dir, g_draggingFileDir, MAX_PATH);
+}

src/lib/synwinxt/synwinxt.def

@@ -4,3 +4,4 @@ EXPORTS
 	DllCanUnloadNow		PRIVATE
 	DllRegisterServer	PRIVATE
 	DllUnregisterServer	PRIVATE
+	getDraggingFileDir	

src/lib/synwinxt/synwinxt.h

@@ -0,0 +1,30 @@
+/*
+ * synergy -- mouse and keyboard sharing utility
+ * Copyright (C) 2013 Bolton Software 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 COPYING 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/>.
+ */
+
+#pragma once
+
+#include <Windows.h>
+
+#if defined(synwinxt_EXPORTS)
+#define CSYNERGYSHELLEXE_API __declspec(dllexport)
+#else
+#define CSYNERGYSHELLEXE_API __declspec(dllimport)
+#endif
+
+typedef void (*GetDraggingFileDir)(CHAR*);
+
+CSYNERGYSHELLEXE_API void getDraggingFileDir(char*);

src/test/integtests/CMakeLists.txt

@@ -60,6 +60,7 @@ set(inc
 	../../lib/server
 	../../lib/synergy
 	../../lib/synwinhk
+	../../lib/synwinxt
 	../../../tools/gtest-1.6.0/include
 	../../../tools/gmock-1.6.0/include
 	../unittests