// Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// f32\sfile\sf_main.cpp

// 

//

#include "sf_std.h"

#include "sf_plugin.h"

#include "sf_file_cache.h"	// for TClosedFileUtils

#include "sf_memory_man.h"

#ifdef __WINS__

#include <emulator.h>

#include <e32wins.h>

#endif

#include "d32btrace.h"

#ifdef __EPOC32__

_LIT(KStartupExeSysBinName,"Z:\\Sys\\Bin\\ESTART.EXE");

#else

_LIT(KStartupExeName,"E32STRT.EXE");

_LIT(KStartupExeSysBinName,"E32STRT.EXE");

#endif

//const TInt KSessionNotifyListGranularity=16; //-- not used anywhere

// patch ldds should specify this as their third uid

//const TInt KPatchLddUidValue=0x100000cc; //-- not used anywhere

_LIT(KFileServerName,"!FileServer");

void CServerFs::New()

//

// Create a new CServerFs.

//

	{

	TheFileServer=new CServerFs(EPriority);

	__ASSERT_ALWAYS(TheFileServer!=NULL,Fault(EMainCreateServer));

	TInt r = TheFileServer->iSessionQueueLock.CreateLocal();

	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainCreateServer));

	r=TheFileServer->Start(KFileServerName);

	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainStartServer));

	}

CServerFs::CServerFs(TInt aPriority)

//

//Constructor.

// 

	: CServer2(aPriority,EGlobalSharableSessions)

	{

	}

CServerFs::~CServerFs()

//

//Destructor.

// 

	{

	iSessionQueueLock.Close();

	}

void CServerFs::RunL()

// 

// calls CServer2::RunL

//

	{

	TInt fn = Message().Function();

	// CServer2::DoConnectL() manipulates iSessionQ & so does CSession2::~CSession2().

	// Unfortunately the session is deleted from a seperate thread (the disconnect 

	// thread) so we need a lock to protect it.

	if (fn == RMessage2::EConnect)

		{

		SessionQueueLockWait();		// lock

		CServer2::RunL();

		SessionQueueLockSignal();	// unlock

		}

	else

		{

		CServer2::RunL();

		}

	}

CSessionFs* CServerFs::operator[](TInt anIndex)

//

// Indexing operator used by DoFsListOpenFiles

//

	{

	__ASSERT_DEBUG(anIndex>=0,Fault(ESvrBadSessionIndex));

	iSessionIter.SetToFirst();

	while (anIndex--)

		iSessionIter++;

	CSessionFs* ses=(CSessionFs*)&(*iSessionIter);

	return(ses);

	}

_LIT(KPrivatePath,"?:\\Private\\");

CSession2* CServerFs::NewSessionL(const TVersion& aVersion,const RMessage2& aMessage) const

//

// Create a new client session for this server.

//

	{

	TVersion v(KF32MajorVersionNumber,KF32MinorVersionNumber,KF32BuildVersionNumber);

	TBool r=User::QueryVersionSupported(v,aVersion);

	if (!r)

		User::Leave(KErrNotSupported);

	__CALL(if(UserHeapAllocFailCount>=0){__UHEAP_FAILNEXT(10);}); // Create session must succeed

	CSessionFs* ses=CSessionFs::NewL();

	CleanupStack::PushL(ses);

	TUid aUid = aMessage.SecureId();

	TBuf<30> thePath = KPrivatePath();	

	thePath[0] = (TUint8) RFs::GetSystemDriveChar();

	thePath.AppendNumFixedWidth(aUid.iUid, EHex, 8);

	thePath.Append(KSlash);

	HBufC* pP=thePath.AllocL(); 

	ses->SetPath(pP);

	__CALL(if (UserHeapAllocFailCount>=0){__UHEAP_FAILNEXT(UserHeapAllocFailCount);});

	RThread idClient;

	User::LeaveIfError(aMessage.Client(idClient, EOwnerThread));

	ses->SetThreadId(idClient.Id());

	idClient.Close();

	CleanupStack::Pop(); //ses

	return(ses);

	}

void CSessionFs::ServiceL(const RMessage2& aMessage)

//

// Service this message for the server

//

	{

	__CALL( if (SimulateError(&aMessage)) { aMessage.Complete(ErrorCondition); return; } );

	const TInt ipcFunction = aMessage.Function() & KIpcFunctionMask;

	if((ipcFunction) >= EMaxClientOperations)

		{

		__THRD_PRINT1(_L("CSessionFs::DoServiceL() - func 0x%x KErrNotSupported"), ipcFunction);

		aMessage.Complete(KErrNotSupported);

		return;

		}

	const TOperation& oP = OperationArray[ipcFunction];

	CFsClientMessageRequest* pR = NULL;

	TInt r = RequestAllocator::GetMessageRequest(oP, aMessage, pR);

	if(r != KErrNone)

		{

		if(r == KErrBadHandle)

			{

			_LIT(KPanic,"Panic");

			aMessage.Panic(KPanic, r);

			return;

			}

		aMessage.Complete(r);

		return;

		}

	pR->Set(aMessage, oP, this);

	__PRINT4TEMP(_L("***** Received Message sess %08x req %08x func 0x%x - %S"), this, pR, ipcFunction, GetFunctionName(ipcFunction));

	pR->Dispatch();

	}

void CActiveSchedulerFs::New()

//

// Create and install the active scheduler.

//

	{

	CActiveSchedulerFs* pA=new CActiveSchedulerFs;

	__ASSERT_ALWAYS(pA!=NULL,Fault(EMainCreateScheduler));

	CActiveScheduler::Install(pA);

	}

void CActiveSchedulerFs::Error(TInt anError) const

//

// Called if any Run() method leaves, which should never happen.

//

	{

	__PRINT1(_L("FileSystemActiveScheduler Error %d"),anError);

	User::Panic(_L("FSRV-ERR"),anError);

	}

void createAllL()

//

// Create the initial objects

//

	{

//

// First we need to create all the containers.

//

	TheContainer=CFsObjectConIx::NewL();

	FileSystems=TheContainer->CreateL();

	Extensions=TheContainer->CreateL();

	ProxyDrives=TheContainer->CreateL();

	Files=TheContainer->CreateL();

	FileShares=TheContainer->CreateL();

	Dirs=TheContainer->CreateL();

	Formats=TheContainer->CreateL();

	RawDisks=TheContainer->CreateL();

	TClosedFileUtils::InitL();

//

// Initialize the drives

//

	for (TInt i=0;i<KMaxDrives;i++)

		TheDrives[i].CreateL(i);

//

// Next we need to create the ROM file system.

//

#if defined(__EPOC32__)

	InstallRomFileSystemL();

	CFileSystem* romFs=GetFileSystem(_L("Rom"));

//#ifndef __DATA_CAGING__	

	TheDefaultPath=_L("Z:\\"); // Temporarily set the default path to the ROM

//#endif

	TheDrives[EDriveZ].SetAtt(KDriveAttRom|KDriveAttInternal);

	TheDrives[EDriveZ].GetFSys()=romFs;

	TInt r=FsThreadManager::InitDrive(EDriveZ,ETrue);

	User::LeaveIfError(r);

#endif

	}

TInt InitializeLocalFileSystem(const TDesC& aName)

//

// Initialize the local file system

//

	{

    __PRINT(_L("InitializeLocalFileSystem"));

    CFileSystem* localFileSystem=GetFileSystem(aName);

	__ASSERT_DEBUG(localFileSystem!=NULL,Fault(EMainGetLocalFileSystem));

	if(localFileSystem == NULL)

		return KErrNotFound;

#if defined(__WINS__)

	TheDrives[EDriveZ].GetFSys()=localFileSystem;

	TheDrives[EDriveZ].SetAtt(KDriveAttRom|KDriveAttInternal);

	TInt r=FsThreadManager::InitDrive(EDriveZ,ETrue);

	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainInitialiseRomFs));

#endif

//

// Initialize the default path

//

//#ifndef __DATA_CAGING__

#if !defined(__WINS__)

	TInt r;

#endif

	r=localFileSystem->DefaultPath(TheDefaultPath);

	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainGetLocalDefaultPath));

//#endif

	LocalFileSystemInitialized=ETrue;

	return KErrNone;

	}

_LIT(KMediaLddName, "ELOCD");

TInt StartupThread(TAny*)

//

// The startup thread.

//

	{

    __PRINT(_L("StartupThread"));

	User::SetCritical(User::ESystemCritical);

	TInt r;

//

// Load the file system's device driver

//

	r=User::LoadLogicalDevice(KMediaLddName);

	__PRINT1(_L("User::LoadLogicalDevice(KMediaLddName) returns %d"),r);

	__ASSERT_ALWAYS(r==KErrNone || r==KErrAlreadyExists || r==KErrNotFound,Fault(EMainCreateResources6));

	#ifdef __WINS__

		// Load media drivers using Win32 functions.  It is not possible to directly

		// read the \epoc32\release\wins\udeb directory, and ELOCAL must be mounted

		// to access Win32 anyway.

		_LIT(KMDW1, "MED*.PDD");

		TBuf<9> KMDW(KMDW1);					// reserve space for \0

		TFileName *pfn = new TFileName;

		__ASSERT_ALWAYS(pfn != NULL, Fault(EMainScanMediaDriversMem1));

		TFileName &fn = *pfn;

		MapEmulatedFileName(fn, KMDW);

		__ASSERT_ALWAYS(fn.Length() < KMaxFileName, Fault(EMainScanMediaDriversLocation));

		WIN32_FIND_DATA ffd;

		HANDLE h = Emulator::FindFirstFile(fn.PtrZ(), &ffd);

		BOOL fF = (h != INVALID_HANDLE_VALUE);

		while (fF)

			{

			TPtrC mdNm(ffd.cFileName);			// null terminated wchar_t array

			// NB: parse Win32 file path with EPOC32 functionality.

			TParse *pprs = new TParse;

			__ASSERT_ALWAYS(pprs != NULL, Fault(EMainScanMediaDriversMem2));

			TParse &prs = *pprs;

			prs.Set(mdNm, NULL, NULL);

			r = User::LoadPhysicalDevice(prs.NameAndExt());

			__ASSERT_ALWAYS(r==KErrNone || r==KErrAlreadyExists || r==KErrNotFound,Fault(EMainLoadMediaDriver));

			fF = Emulator::FindNextFile(h, &ffd);

			delete pprs;

			}

		FindClose(h);							// Win32 direct

		delete pfn;

	#else

		// Load media drivers for EPOC32 using built-in rom file system.

		{

		RFs fsM;

		r = fsM.Connect();

		__ASSERT_ALWAYS(r==KErrNone,Fault(EMainScanMediaDriverConnect));

//#ifdef __EPOC32__

		_LIT(KMDSysBinHome, "Z:\\Sys\\Bin\\med*.pdd");

//#else

//		_LIT(KMDHome, "med*.pdd");

//#endif

		RDir d;

		r = d.Open(fsM, KMDSysBinHome, KEntryAttMaskSupported);

		__ASSERT_ALWAYS(r==KErrNone,Fault(EMainScanMediaDriverDirOpen));

		TBool done = EFalse;

		do

			{

			TEntryArray ea;

			r = d.Read(ea);

			__ASSERT_ALWAYS(r == KErrNone || r == KErrEof, Fault(EMainScanMediaDriverDirRead));

			done = (r == KErrEof);

			for (TInt i = 0; i < ea.Count(); ++i)

				{

				const TEntry &e = ea[i];

				if (!e.IsDir())

					{

					TParse *pprs = new TParse;

					__ASSERT_ALWAYS(pprs != NULL, Fault(EMainScanMediaDriversMem1));

					TParse &prs = *pprs;

					prs.Set(e.iName, NULL, NULL);

					TPtrC mdName(prs.NameAndExt());

					r = User::LoadPhysicalDevice(mdName);

					__PRINT1(_L("User::LoadPhysicalDevice(mdName) returns %d"),r);

					__ASSERT_ALWAYS(r==KErrNone || r==KErrAlreadyExists || r==KErrNotFound,Fault(EMainLoadMediaDriver));

					delete pprs;

					}

				}

			} while (! done);

		d.Close();

		fsM.Close();

		}

	#endif		// else __WINS__

#if defined(__WINS__)

//#ifndef __DATA_CAGING__	

		TheDefaultPath=_L("?:\\");

		TheDefaultPath[0] = (TUint8) RFs::GetSystemDriveChar();

//#endif

#endif

#if defined(__EPOC32__)

	TMachineStartupType reason;

	UserHal::StartupReason(reason);

#if defined(_DEBUG) || defined(_DEBUG_RELEASE)

	PrintStartUpReason(reason);

#endif

	OpenOnDriveZOnly = (reason==EStartupSafeReset);

#endif

//

// Now we must load estart from z:

//

	RProcess eStart;

#if defined(__WINS__)

	const char* eStartPath = NULL;

	UserSvr::HalFunction(EHalGroupEmulator,EEmulatorHalStringProperty,(TAny*)"EStart",&eStartPath);

	if (eStartPath == NULL)

		{

		r=eStart.Create(KStartupExeSysBinName,KNullDesC);

		}

	else

		{

		TPtrC8 temp((unsigned char *)eStartPath);

		TBuf16<KMaxFileName> buf;

		buf.Copy(temp);

		r=eStart.Create(buf,KNullDesC);

		}

#else

	r=eStart.Create(KStartupExeSysBinName,KNullDesC);

#endif

	if (r!=KErrNone)	// Whoops!

		Fault(EMainStartupNoEStart);

	eStart.Resume();	// Start the process going

	eStart.Close();		// Get rid of our handle

#if defined(_LOCKABLE_MEDIA)

	// Create a global semaphore for the asynchronous WriteToDisk() threads.

	RSemaphore s;

	r = s.CreateGlobal(_L("dwsem"), 1);			// only supp 1 thd at a time

	__ASSERT_ALWAYS(r == KErrNone, Fault(EMainStartupWriteToDiskSemaphore));

#endif

//

// Now we can just exit the startup thread as its no longer needed.

//

	return(KErrNone);

	}

void commonInitialize()

//

// Initialization common to all platforms.

//

	{

	__PRINT(_L("commonInitialize"));

#if defined(_DEBUG) || defined(_DEBUG_RELEASE)

	ErrorCondition=KErrNone;

	ErrorCount=0;

	UserHeapAllocFailCount=-1;

	KernHeapAllocFailCount=-1;

#endif

	TInt r = RequestAllocator::Initialise();

	__ASSERT_ALWAYS(r==KErrNone,Fault(EFsCacheLockFailure));

	r = OperationAllocator::Initialise();

	__ASSERT_ALWAYS(r==KErrNone,Fault(EFsCacheLockFailure));

	// initialise the TParse pool lock object

	r = TParsePool::Init();

	__ASSERT_ALWAYS(r==KErrNone,Fault(EFsParsePoolLockFailure));

	// Get local copies of capability sets

	TCapabilitySet caps;

	caps.SetAllSupported();

	AllCapabilities=*(SCapabilitySet*)∩︀

	caps.SetDisabled();

	DisabledCapabilities=*(SCapabilitySet*)∩︀

	FsThreadManager::SetMainThreadId();

	r=FsThreadManager::CreateDisconnectThread();

	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainDisconnectThread));

	//

	// Install a trap handler

	//

	CTrapCleanup* trapHandler=CTrapCleanup::New();

	__ASSERT_ALWAYS(trapHandler!=NULL,Fault(EMainCreateResources1));

	TRAP(r,createAllL())

	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainCreateResources1));

	CActiveSchedulerFs::New();

	CServerFs::New();

	TheKernEventNotifier = CKernEventNotifier::New();

    __ASSERT_ALWAYS(TheKernEventNotifier,Fault(EMainCreateResources5));

    CActiveSchedulerFs::Add(TheKernEventNotifier);

    TheKernEventNotifier->Start();

//

	__ASSERT_ALWAYS(InitLoader()==KErrNone,Fault(ELdrRestartInit));

//

	LocalFileSystemInitialized=EFalse;

	StartupInitCompleted=EFalse;

	RefreshZDriveCache=EFalse;

	CompFsMounted=EFalse;

	CompFsSync=ETrue;

	// initialise notification information

	FsNotify::Initialise();

	// initialise local drive specific information

	LocalDrives::Initialise();

	TRAP(r, FsPluginManager::InitialiseL());

	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainCreateStartupThread0));

	RThread t;

	r=t.Create(_L("StartupThread"),StartupThread,KDefaultStackSize,KHeapMinSize,KHeapMinSize,NULL);

	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainCreateStartupThread1));

	t.SetPriority(EPriorityLess);

	CLogon* pL=NULL;

	TRAP(r,pL=CLogon::NewL());

	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainCreateStartupThread2));

	// NOTE: This function only returns after the startup thread has exited

	r=pL->Logon(t);

	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainCreateStartupThread3));

	delete pL;

	// Make a proper process relative handle to the server

	r=TheServerThread.Duplicate(TheServerThread);

	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainCreateStartupThread4));

	ServerThreadAllocator = &User::Heap();

	}

TBool ServerIsRunning()

//

// Check whether or not the server already exists

//

	{

	TFullName serverName;

	TFindServer fileServer(KFileServerName);

	TInt result=fileServer.Next(serverName);

	if (result!=KErrNotFound)

		return(ETrue);