From bd6336c629841c6db3a6ca53a936d629d34db53b Mon Sep 17 00:00:00 2001 From: Daniel Wilhelm Date: Fri, 18 Apr 2014 17:15:16 +0200 Subject: 4.1 --- shared/notify_removal.cpp | 238 ---------------------------------------------- 1 file changed, 238 deletions(-) delete mode 100644 shared/notify_removal.cpp (limited to 'shared/notify_removal.cpp') diff --git a/shared/notify_removal.cpp b/shared/notify_removal.cpp deleted file mode 100644 index 3a9239db..00000000 --- a/shared/notify_removal.cpp +++ /dev/null @@ -1,238 +0,0 @@ -// ************************************************************************** -// * This file is part of the FreeFileSync project. It is distributed under * -// * GNU General Public License: http://www.gnu.org/licenses/gpl.html * -// * Copyright (C) 2008-2011 ZenJu (zhnmju123 AT gmx.de) * -// ************************************************************************** - -#include "notify_removal.h" -#include -#include "last_error.h" -#include "Loki/ScopeGuard.h" -#include -#include -#include - -using namespace zen; - - -/* -//convert bitmask into "real" drive-letter -Zstring getDriveFromMask(ULONG unitmask) -{ - for (int i = 0; i < 26; ++i) - { - if (unitmask & 0x1) - return Zstring() + static_cast(DefaultChar('A') + i) + DefaultStr(":\\"); - unitmask >>= 1; - } - return Zstring(); -} -*/ - -namespace -{ -bool messageProviderConstructed = false; -} - - -class MessageProvider //administrates a single dummy window to receive messages -{ -public: - static MessageProvider& instance() //throw (FileError) - { - static MessageProvider inst; - messageProviderConstructed = true; - return inst; - } - - class Listener - { - public: - virtual ~Listener() {} - virtual void onMessage(UINT message, WPARAM wParam, LPARAM lParam) = 0; //throw()! - }; - void registerListener(Listener& l) { listener.insert(&l); } - void unregisterListener(Listener& l) { listener.erase(&l); } //don't unregister objects with static lifetime - - HWND getWnd() const { return windowHandle; } //get handle in order to register additional notifications - -private: - MessageProvider(); - ~MessageProvider(); - MessageProvider(const MessageProvider&); - MessageProvider& operator=(const MessageProvider&); - - static const wchar_t WINDOW_NAME[]; - - friend LRESULT CALLBACK topWndProc(HWND, UINT, WPARAM, LPARAM); - void processMessage(UINT message, WPARAM wParam, LPARAM lParam); - - const HINSTANCE process; - HWND windowHandle; - - std::set listener; -}; - - -const wchar_t MessageProvider::WINDOW_NAME[] = L"E6AD5EB1-527B-4EEF-AC75-27883B233380"; //random name - - -LRESULT CALLBACK topWndProc( - HWND hwnd, //handle to window - UINT uMsg, //message identifier - WPARAM wParam, //first message parameter - LPARAM lParam) //second message parameter -{ - if (messageProviderConstructed) //attention: this callback is triggered in the middle of singleton construction! It is a bad idea to to call back at this time! - try - { - MessageProvider::instance().processMessage(uMsg, wParam, lParam); //not supposed to throw - } - catch (...) {} - - return ::DefWindowProc(hwnd, uMsg, wParam, lParam); -} - - -MessageProvider::MessageProvider() : - process(::GetModuleHandle(NULL)), //get program's module handle - windowHandle(NULL) -{ - if (process == NULL) - throw zen::FileError(std::wstring(L"Could not start monitoring window notifications:") + "\n\n" + getLastErrorFormatted() + " (GetModuleHandle)"); - - //register the main window class - WNDCLASS wc = {}; - wc.lpfnWndProc = topWndProc; - wc.hInstance = process; - wc.lpszClassName = WINDOW_NAME; - - if (::RegisterClass(&wc) == 0) - throw zen::FileError(std::wstring(L"Could not start monitoring window notifications:") + "\n\n" + getLastErrorFormatted() + " (RegisterClass)"); - - Loki::ScopeGuard guardClass = Loki::MakeGuard(::UnregisterClass, WINDOW_NAME, process); - - //create dummy-window - windowHandle = ::CreateWindow( - WINDOW_NAME, //LPCTSTR lpClassName OR ATOM in low-order word! - NULL, //LPCTSTR lpWindowName, - 0, //DWORD dwStyle, - 0, //int x, - 0, //int y, - 0, //int nWidth, - 0, //int nHeight, - 0, //note: we need a toplevel window to receive device arrival events, not a message-window (HWND_MESSAGE)! - NULL, //HMENU hMenu, - process, //HINSTANCE hInstance, - NULL); //LPVOID lpParam - if (windowHandle == NULL) - throw zen::FileError(std::wstring(L"Could not start monitoring window notifications:") + "\n\n" + getLastErrorFormatted() + " (CreateWindow)"); - - guardClass.Dismiss(); -} - - -MessageProvider::~MessageProvider() -{ - //clean-up in reverse order - ::DestroyWindow(windowHandle); - ::UnregisterClass(WINDOW_NAME, //LPCTSTR lpClassName OR ATOM in low-order word! - process); //HINSTANCE hInstance -} - - -void MessageProvider::processMessage(UINT message, WPARAM wParam, LPARAM lParam) -{ - std::for_each(listener.begin(), listener.end(), boost::bind(&Listener::onMessage, _1, message, wParam, lParam)); -} -//#################################################################################################### - - -class NotifyRequestDeviceRemoval::Pimpl : private MessageProvider::Listener -{ -public: - Pimpl(NotifyRequestDeviceRemoval& parent, HANDLE hDir) : //throw (FileError) - parent_(parent) - { - MessageProvider::instance().registerListener(*this); //throw (FileError) - - //register handles to receive notifications - DEV_BROADCAST_HANDLE filter = {}; - filter.dbch_size = sizeof(filter); - filter.dbch_devicetype = DBT_DEVTYP_HANDLE; - filter.dbch_handle = hDir; - - hNotification = ::RegisterDeviceNotification( - MessageProvider::instance().getWnd(), //__in HANDLE hRecipient, - &filter, //__in LPVOID NotificationFilter, - DEVICE_NOTIFY_WINDOW_HANDLE); //__in DWORD Flags - if (hNotification == NULL) - { - const DWORD lastError = ::GetLastError(); - if (lastError != ERROR_CALL_NOT_IMPLEMENTED && //fail on SAMBA share: this shouldn't be a showstopper! - lastError != ERROR_SERVICE_SPECIFIC_ERROR && //neither should be fail for "Pogoplug" mapped network drives - lastError != ERROR_INVALID_DATA) //this seems to happen for a NetDrive-mapped FTP server - throw zen::FileError(std::wstring(L"Could not register device removal notifications:") + "\n\n" + getLastErrorFormatted(lastError)); - } - } - - ~Pimpl() - { - ::UnregisterDeviceNotification(hNotification); - MessageProvider::instance().unregisterListener(*this); - } - -private: - Pimpl(Pimpl&); - Pimpl& operator=(Pimpl&); - - virtual void onMessage(UINT message, WPARAM wParam, LPARAM lParam) //throw()! - { - //DBT_DEVICEQUERYREMOVE example: http://msdn.microsoft.com/en-us/library/aa363427(v=VS.85).aspx - if (message == WM_DEVICECHANGE) - { - if ( wParam == DBT_DEVICEQUERYREMOVE || - wParam == DBT_DEVICEQUERYREMOVEFAILED || - wParam == DBT_DEVICEREMOVECOMPLETE) - { - PDEV_BROADCAST_HDR header = reinterpret_cast(lParam); - if (header->dbch_devicetype == DBT_DEVTYP_HANDLE) - { - PDEV_BROADCAST_HANDLE body = reinterpret_cast(lParam); - -#ifdef __MINGW32__ - const HDEVNOTIFY requestNotification = reinterpret_cast(body->dbch_hdevnotify); -#else - const HDEVNOTIFY requestNotification = body->dbch_hdevnotify; -#endif - if (requestNotification == hNotification) //is it for the notification we registered? - switch (wParam) - { - case DBT_DEVICEQUERYREMOVE: - parent_.onRequestRemoval(body->dbch_handle); - break; - case DBT_DEVICEQUERYREMOVEFAILED: - parent_.onRemovalFinished(body->dbch_handle, false); - break; - case DBT_DEVICEREMOVECOMPLETE: - parent_.onRemovalFinished(body->dbch_handle, true); - break; - } - } - } - } - } - - NotifyRequestDeviceRemoval& parent_; - HDEVNOTIFY hNotification; -}; -//#################################################################################################### - - -NotifyRequestDeviceRemoval::NotifyRequestDeviceRemoval(HANDLE hDir) -{ - pimpl.reset(new Pimpl(*this, hDir)); -} - - -NotifyRequestDeviceRemoval::~NotifyRequestDeviceRemoval() {} //make sure ~auto_ptr() works with complete type -- cgit