/////////////////////////////////////////////////////////////////////////////
-// Name: msw/dialup.cpp
+// Name: src/msw/dialup.cpp
// Purpose: MSW implementation of network/dialup classes and functions
// Author: Vadim Zeitlin
// Modified by:
#pragma hdrstop
#endif
-// these functions require Win32
-#if defined(__WIN16__) && wxUSE_DIALUP_MANAGER
- #undef wxUSE_DIALUP_MANAGER
- #define wxUSE_DIALUP_MANAGER 0
-#endif // wxUSE_DIALUP_MANAGER && Win16
-
#if wxUSE_DIALUP_MANAGER
+#include "wx/dialup.h"
+
#ifndef WX_PRECOMP
#include "wx/log.h"
#include "wx/intl.h"
#include "wx/event.h"
+ #include "wx/app.h"
+ #include "wx/timer.h"
+ #include "wx/module.h"
#endif
-#include "wx/timer.h"
-#include "wx/app.h"
#include "wx/generic/choicdgg.h"
#include "wx/dynlib.h"
-#include "wx/dialup.h"
DEFINE_EVENT_TYPE(wxEVT_DIALUP_CONNECTED)
DEFINE_EVENT_TYPE(wxEVT_DIALUP_DISCONNECTED)
#if (!defined(__BORLANDC__) || (__BORLANDC__>=0x550)) && \
(!defined(__GNUWIN32__) || wxCHECK_W32API_VERSION(0, 5)) && \
!defined(__GNUWIN32_OLD__) && \
- !defined(__WATCOMC__) && \
!defined(__WINE__) && \
(!defined(__VISUALC__) || (__VISUALC__ >= 1020))
#define INTERNET_CONNECTION_PROXY 4
#endif
+// implemented in utils.cpp
+extern "C" WXDLLIMPEXP_BASE HWND
+wxCreateHiddenWindow(LPCTSTR *pclassname, LPCTSTR classname, WNDPROC wndproc);
+
+static const wxChar *
+ wxMSWDIALUP_WNDCLASSNAME = wxT("_wxDialUpManager_Internal_Class");
+static const wxChar *gs_classForDialUpWindow = NULL;
+
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
wxRasThreadData()
{
hWnd = 0;
- hEventRas = hEventQuit = INVALID_HANDLE_VALUE;
+ hEventRas =
+ hEventQuit = 0;
dialUpManager = NULL;
}
+ ~wxRasThreadData()
+ {
+ if ( hWnd )
+ DestroyWindow(hWnd);
+
+ if ( hEventQuit )
+ CloseHandle(hEventQuit);
+
+ if ( hEventRas )
+ CloseHandle(hEventRas);
+ }
+
HWND hWnd; // window to send notifications to
- HANDLE hEventRas, // event which RAS signals when status changes
- hEventQuit; // event which we signal when we terminate
+ HANDLE hEventRas, // automatic event which RAS signals when status changes
+ hEventQuit; // manual event which we signal when we terminate
- class WXDLLEXPORT wxDialUpManagerMSW *dialUpManager; // the owner
+ class WXDLLIMPEXP_FWD_CORE wxDialUpManagerMSW *dialUpManager; // the owner
};
// ----------------------------------------------------------------------------
virtual bool HangUp();
virtual bool IsAlwaysOnline() const;
virtual bool IsOnline() const;
- virtual void SetOnlineStatus(bool isOnline = TRUE);
+ virtual void SetOnlineStatus(bool isOnline = true);
virtual bool EnableAutoCheckOnlineStatus(size_t nSeconds);
virtual void DisableAutoCheckOnlineStatus();
virtual void SetWellKnownHost(const wxString& hostname, int port);
// for wxRasDialFunc
static HWND GetRasWindow() { return ms_hwndRas; }
+ static void ResetRasWindow() { ms_hwndRas = NULL; }
static wxDialUpManagerMSW *GetDialer() { return ms_dialer; }
private:
static HRASCONN FindActiveConnection();
// notify the application about status change
- void NotifyApp(bool connected, bool fromOurselves = FALSE) const;
+ void NotifyApp(bool connected, bool fromOurselves = false) const;
// destroy the thread data and the thread itself
void CleanUpThreadData();
+ // number of times EnableAutoCheckOnlineStatus() had been called minus the
+ // number of times DisableAutoCheckOnlineStatus() had been called
+ int m_autoCheckLevel;
+
// timer used for polling RAS status
class WXDLLEXPORT RasTimer : public wxTimer
{
// data used by this thread and our hidden window to send messages between
// each other
- wxRasThreadData m_data;
+ wxRasThreadData *m_data;
// the handle of rasapi32.dll when it's loaded
wxDynamicLibrary m_dllRas;
DECLARE_NO_COPY_CLASS(wxDialUpManagerMSW)
};
+// module to destroy helper window created by wxDialUpManagerMSW
+class wxDialUpManagerModule : public wxModule
+{
+public:
+ bool OnInit() { return true; }
+ void OnExit()
+ {
+ HWND hwnd = wxDialUpManagerMSW::GetRasWindow();
+ if ( hwnd )
+ {
+ ::DestroyWindow(hwnd);
+ wxDialUpManagerMSW::ResetRasWindow();
+ }
+
+ if ( gs_classForDialUpWindow )
+ {
+ ::UnregisterClass(wxMSWDIALUP_WNDCLASSNAME, wxGetInstance());
+ gs_classForDialUpWindow = NULL;
+ }
+ }
+
+private:
+ DECLARE_DYNAMIC_CLASS(wxDialUpManagerModule)
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxDialUpManagerModule, wxModule)
+
// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------
m_dllRas(_T("RASAPI32"))
{
// initialize our data
+ m_autoCheckLevel = 0;
m_hThread = 0;
+ m_data = new wxRasThreadData;
if ( !m_dllRas.IsLoaded() )
{
exit:
if ( funcName )
{
- static const wxChar *msg = wxTRANSLATE(
-"The version of remote access service (RAS) installed on this machine is too\
-old, please upgrade (the following required function is missing: %s)."
- );
-
- wxLogError(wxGetTranslation(msg), funcName);
+ wxLogError(_("The version of remote access service (RAS) installed "
+ "on this machine is too old, please upgrade (the "
+ "following required function is missing: %s)."),
+ funcName);
m_dllRas.Unload();
return;
}
case 0:
// we want the error message to start from a lower case letter
- buffer[0] = wxTolower(buffer[0]);
+ buffer[0] = (wxChar)wxTolower(buffer[0]);
return wxString(buffer);
}
}
else
{
- // an error occured
+ // an error occurred
wxLogError(_("Cannot find active dialup connection: %s"),
GetErrorString(dwRet).c_str());
return 0;
{
if ( m_hThread )
{
- if ( !SetEvent(m_data.hEventQuit) )
+ if ( !SetEvent(m_data->hEventQuit) )
{
wxLogLastError(_T("SetEvent(RasThreadQuit)"));
}
+ else // sent quit request to the background thread
+ {
+ // the thread still needs m_data so we can't free it here, rather
+ // let the thread do it itself
+ m_data = NULL;
+ }
CloseHandle(m_hThread);
m_hThread = 0;
}
- if ( m_data.hWnd )
- {
- DestroyWindow(m_data.hWnd);
-
- m_data.hWnd = 0;
- }
-
- if ( m_data.hEventQuit )
+ if ( m_data )
{
- CloseHandle(m_data.hEventQuit);
-
- m_data.hEventQuit = 0;
- }
-
- if ( m_data.hEventRas )
- {
- CloseHandle(m_data.hEventRas);
-
- m_data.hEventRas = 0;
+ delete m_data;
+ m_data = NULL;
}
}
ms_dialer = NULL;
- NotifyApp(FALSE /* !connected */, TRUE /* we dialed ourselves */);
+ NotifyApp(false /* !connected */, true /* we dialed ourselves */);
}
else if ( rasconnstate == RASCS_Connected )
{
- ms_isConnected = TRUE;
+ ms_isConnected = true;
ms_dialer = NULL;
- NotifyApp(TRUE /* connected */, TRUE /* we dialed ourselves */);
+ NotifyApp(true /* connected */, true /* we dialed ourselves */);
}
}
if ( dwRet == ERROR_BUFFER_TOO_SMALL )
{
// reallocate the buffer
- rasEntries = (RASENTRYNAME *)realloc(rasEntries, size);
+ void *n = realloc(rasEntries, size);
+ if (n == NULL)
+ {
+ free(rasEntries);
+ return 0;
+ }
+ rasEntries = (RASENTRYNAME *)n;
}
else if ( dwRet != 0 )
{
bool async)
{
// check preconditions
- wxCHECK_MSG( IsOk(), FALSE, wxT("using uninitialized wxDialUpManager") );
+ wxCHECK_MSG( IsOk(), false, wxT("using uninitialized wxDialUpManager") );
if ( ms_hRasConnection )
{
wxFAIL_MSG(wxT("there is already an active connection"));
- return TRUE;
+ return true;
}
// get the default ISP if none given
// no known ISPs, abort
wxLogError(_("Failed to connect: no ISP to dial."));
- return FALSE;
+ return false;
case 1:
// only one ISP, choose it
if ( !entryName )
{
// cancelled by user
- return FALSE;
+ return false;
}
}
}
{
wxLogError(_("Failed to connect: missing username/password."));
- return FALSE;
+ return false;
}
}
else
if ( dwRet != 0 )
{
// can't pass a wxWCharBuffer through ( ... )
- wxLogError(_("Failed to %s dialup connection: %s"),
- wxString(async ? _("initiate") : _("establish")).c_str(),
- GetErrorString(dwRet).c_str());
+ if ( async )
+ wxLogError(_("Failed to initiate dialup connection: %s"),
+ GetErrorString(dwRet).c_str());
+ else
+ wxLogError(_("Failed to establish dialup connection: %s"),
+ GetErrorString(dwRet).c_str());
// we should still call RasHangUp() if we got a non 0 connection
if ( ms_hRasConnection )
ms_dialer = NULL;
- return FALSE;
+ return false;
}
// for async dialing, we're not yet connected
if ( !async )
{
- ms_isConnected = TRUE;
+ ms_isConnected = true;
}
- return TRUE;
+ return true;
}
bool wxDialUpManagerMSW::IsDialing() const
if ( !GetDialer() )
{
// silently ignore
- return FALSE;
+ return false;
}
wxASSERT_MSG( ms_hRasConnection, wxT("dialing but no connection?") );
bool wxDialUpManagerMSW::HangUp()
{
- wxCHECK_MSG( IsOk(), FALSE, wxT("using uninitialized wxDialUpManager") );
+ wxCHECK_MSG( IsOk(), false, wxT("using uninitialized wxDialUpManager") );
// we may terminate either the connection we initiated or another one which
// is active now
{
wxLogError(_("Cannot hang up - no active dialup connection."));
- return FALSE;
+ return false;
}
- DWORD dwRet = ms_pfnRasHangUp(hRasConn);
- if ( dwRet != 0 )
+ // note that it's not an error if the connection had been already
+ // terminated
+ const DWORD dwRet = ms_pfnRasHangUp(hRasConn);
+ if ( dwRet != 0 && dwRet != ERROR_NO_CONNECTION )
{
wxLogError(_("Failed to terminate the dialup connection: %s"),
GetErrorString(dwRet).c_str());
}
- ms_isConnected = FALSE;
+ ms_isConnected = false;
- return TRUE;
+ return true;
}
bool wxDialUpManagerMSW::IsAlwaysOnline() const
{
// assume no permanent connection by default
- bool isAlwaysOnline = FALSE;
+ bool isAlwaysOnline = false;
// try to use WinInet functions
bool wxDialUpManagerMSW::IsOnline() const
{
- wxCHECK_MSG( IsOk(), FALSE, wxT("using uninitialized wxDialUpManager") );
+ wxCHECK_MSG( IsOk(), false, wxT("using uninitialized wxDialUpManager") );
if ( IsAlwaysOnline() )
{
}
else
{
- // return TRUE if there is at least one active connection
+ // return true if there is at least one active connection
return FindActiveConnection() != 0;
}
}
bool wxDialUpManagerMSW::EnableAutoCheckOnlineStatus(size_t nSeconds)
{
- wxCHECK_MSG( IsOk(), FALSE, wxT("using uninitialized wxDialUpManager") );
+ wxCHECK_MSG( IsOk(), false, wxT("using uninitialized wxDialUpManager") );
+
+ if ( m_autoCheckLevel++ )
+ {
+ // already checking
+ return true;
+ }
bool ok = ms_pfnRasConnectionNotification != 0;
// first, see if we don't have this thread already running
if ( m_hThread != 0 )
{
- DWORD dwSuspendCount = 2;
- while ( dwSuspendCount > 1 )
- {
- dwSuspendCount = ResumeThread(m_hThread);
- if ( dwSuspendCount == (DWORD)-1 )
- {
- wxLogLastError(wxT("ResumeThread(RasThread)"));
+ if ( ::ResumeThread(m_hThread) != (DWORD)-1 )
+ return true;
- ok = FALSE;
- }
- }
+ // we're leaving a zombie thread... but what else can we do?
+ wxLogLastError(wxT("ResumeThread(RasThread)"));
- if ( ok )
- {
- return TRUE;
- }
+ ok = false;
}
}
if ( ok )
{
// first create an event to wait on
- m_data.hEventRas = CreateEvent
- (
+ m_data->hEventRas = ::CreateEvent
+ (
NULL, // security attribute (default)
- FALSE, // manual reset (not)
+ FALSE, // manual reset (no, it is automatic)
FALSE, // initial state (not signaled)
NULL // name (no)
- );
- if ( !m_data.hEventRas )
+ );
+ if ( !m_data->hEventRas )
{
wxLogLastError(wxT("CreateEvent(RasStatus)"));
- ok = FALSE;
+ ok = false;
}
}
if ( ok )
{
- // create the event we use to quit the thread
- m_data.hEventQuit = CreateEvent(NULL, FALSE, FALSE, NULL);
- if ( !m_data.hEventQuit )
+ // create the event we use to quit the thread: using a manual event
+ // here avoids problems with missing the event if wxDialUpManagerMSW
+ // is created and destroyed immediately, before wxRasStatusWindowProc
+ // starts waiting on the event
+ m_data->hEventQuit = ::CreateEvent
+ (
+ NULL, // default security
+ TRUE, // manual event
+ FALSE, // initially non signalled
+ NULL // nameless
+ );
+ if ( !m_data->hEventQuit )
{
wxLogLastError(wxT("CreateEvent(RasThreadQuit)"));
CleanUpThreadData();
- ok = FALSE;
+ ok = false;
}
}
{
// create a hidden window to receive notification about connections
// status change
- extern const wxChar *wxCanvasClassName;
- ms_hwndRas = ::CreateWindow(wxCanvasClassName, NULL,
- 0, 0, 0, 0,
- 0, NULL,
- (HMENU)NULL, wxGetInstance(), 0);
+ ms_hwndRas = wxCreateHiddenWindow
+ (
+ &gs_classForDialUpWindow,
+ wxMSWDIALUP_WNDCLASSNAME,
+ wxRasStatusWindowProc
+ );
if ( !ms_hwndRas )
{
wxLogLastError(wxT("CreateWindow(RasHiddenWindow)"));
CleanUpThreadData();
- ok = FALSE;
+ ok = false;
}
-
- // and subclass it
- wxSetWindowProc(ms_hwndRas, wxRasStatusWindowProc);
}
- m_data.hWnd = ms_hwndRas;
+ m_data->hWnd = ms_hwndRas;
if ( ok )
{
// start the secondary thread
- m_data.dialUpManager = this;
+ m_data->dialUpManager = this;
DWORD tid;
m_hThread = CreateThread
NULL,
0,
(LPTHREAD_START_ROUTINE)wxRasMonitorThread,
- (void *)&m_data,
+ (void *)m_data,
0,
&tid
);
DWORD dwRet = ms_pfnRasConnectionNotification
(
(HRASCONN)INVALID_HANDLE_VALUE,
- m_data.hEventRas,
+ m_data->hEventRas,
3 /* RASCN_Connection | RASCN_Disconnection */
);
}
else
{
- return TRUE;
+ return true;
}
}
}
m_timerStatusPolling.Start(nSeconds * 1000);
- return TRUE;
+ return true;
}
void wxDialUpManagerMSW::DisableAutoCheckOnlineStatus()
{
wxCHECK_RET( IsOk(), wxT("using uninitialized wxDialUpManager") );
+ if ( --m_autoCheckLevel != 0 )
+ {
+ // still checking
+ return;
+ }
+
if ( m_hThread )
{
// we have running secondary thread, it's just enough to suspend it
handles[0] = data->hEventRas;
handles[1] = data->hEventQuit;
- bool cont = TRUE;
+ bool cont = true;
while ( cont )
{
- DWORD dwRet = WaitForMultipleObjects(2, handles, FALSE, INFINITE);
+ DWORD dwRet = ::WaitForMultipleObjects(2, handles, FALSE, INFINITE);
switch ( dwRet )
{
break;
case WAIT_OBJECT_0 + 1:
- cont = FALSE;
+ cont = false;
break;
+ default:
+ wxFAIL_MSG( _T("unexpected return of WaitForMultipleObjects()") );
+ // fall through
+
case WAIT_FAILED:
- wxLogLastError(wxT("WaitForMultipleObjects(RasMonitor)"));
- break;
+#ifdef __WXDEBUG__
+ // using wxLogLastError() from here is dangerous: we risk to
+ // deadlock the main thread if wxLog sends output to GUI
+ DWORD err = GetLastError();
+ wxMessageOutputDebug dbg;
+ dbg.Printf
+ (
+ wxT("WaitForMultipleObjects(RasMonitor) failed: 0x%08lx (%s)"),
+ err,
+ wxSysErrorMsg(err)
+ );
+#endif // __WXDEBUG__
+
+ // no sense in continuing, who knows if the handles we're
+ // waiting for even exist yet...
+ return (DWORD)-1;
}
}
+ // we don't need it any more now and if this thread ran, it is our
+ // responsability to free the data
+ delete data;
+
return 0;
}
wxCHECK_RET( dialUpManager, wxT("who started to dial then?") );
- SendMessage(dialUpManager->GetRasWindow(), wxWM_RAS_DIALING_PROGRESS,
+ SendMessage(wxDialUpManagerMSW::GetRasWindow(), wxWM_RAS_DIALING_PROGRESS,
rasconnstate, dwError);
}
#endif // __BORLANDC__
#endif // wxUSE_DIALUP_MANAGER
-
projects / wxWidgets.git / blobdiff