/*

* Copyright (c) 2005 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:  Implementation of class CUserAgent.

*

*/

// INCLUDE FILES

#include <e32std.h>

#include <f32file.h>

#include <eikenv.h>

#include <browser_platform_variant.hrh>

#include "webUtilsCommon.h"

#include <cuseragent.h>

#include "WebUtilsLogger.h"

#include <webutilsinternalcrkeys.h>

#define KPlaceHolderMozillaVer		_L("Mozilla/5.0")

#define KPlaceHolderComponent		_L("AppleWebKit/525 (KHTML, like Gecko) Version/3.0")

#define KPlaceHolderBrowserName		_L("BrowserNG")

#define KPlaceHolderSlash           _L("/")

#define KPlaceHolderSymbianOS       _L("SymbianOS")

#define KPlaceHolderSeries60        _L("Series60")

#define KPlaceHolderOpen            _L("(")

#define KPlaceHolderClose           _L(")")

#define KPlaceHolderSemiColon       _L(";")

#define KPlaceHolderPeriod          _L(".")

const TInt KMaxUserAgentStringLength = 256;

const TInt KMaxBrowserVersionStringLength = 20;

const TInt KMaxBrowserNameLength = 20;

// Space character.

LOCAL_D const TUint8 KSpaceChar = ' ';

// ================= MEMBER FUNCTIONS =======================

// ---------------------------------------------------------

// CUserAgent::CUserAgent()

// Constructor with parent

// ---------------------------------------------------------

//

CUserAgent::CUserAgent() 

    {

	LOG_CREATE

 	LOG_WRITE( "CUserAgent::CUserAgent" );

 	}

// ---------------------------------------------------------

// CUserAgent::~CUserAgent()

// Destructor

// ---------------------------------------------------------

//

CUserAgent::~CUserAgent()

    {

 	LOG_WRITE( "CUserAgent::~CUserAgent" );

 	delete iRepository;

 	delete iBrowserCenrepStr;

	delete iMMSCenrepStr;

	delete iUAProfURL;

	delete iUAProfURL3G;

	delete iBrowserVersionStr;

	delete iBrowserNameAndVersionStr;

	LOG_DELETE

    }

// ---------------------------------------------------------

// CUserAgent* CUserAgent::NewL()

// ---------------------------------------------------------

//

EXPORT_C CUserAgent* CUserAgent::NewL()

    {

	CUserAgent* self = new (ELeave) CUserAgent;

 	CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop();

    return self;

    }

// ---------------------------------------------------------

// CUserAgent::ConstructL()

// Symbian constructor

// ---------------------------------------------------------

//

void CUserAgent::ConstructL()

    {

    LOG_ENTERFN("CUserAgent::ConstructL()");

	iBrowserCenrepStr = iMMSCenrepStr = NULL;

	iUAProfURL = iUAProfURL3G = NULL;

	iRepository = NULL;

	iRepository = CRepository::NewL(KCRUidWebUtils);

	iUAStrQueried = iMMSUAStrQueried = iURLUAProfQueried = FALSE;

	GetBrowserVersionL();

	GetBrowserNameAndVersionL();

    LOG_LEAVEFN("CUserAgent::ConstructL()");

    }

// ---------------------------------------------------------

// CUserAgent::UserAgentL()

// Returns complete constructed user agent string.

// ---------------------------------------------------------

//

EXPORT_C HBufC8* CUserAgent::UserAgentL()

{

	LOG_ENTERFN("CUserAgent::UserAgent()");

    TRAPD( ErrorCode,ReadUserAgentStringL());

	if(ErrorCode != KErrNone)

	{

		LOG_WRITE_FORMAT("ERROR: ReadUserAgentStringL failed! (%d) Returning NULL",ErrorCode);

		LOG_LEAVEFN("CUserAgent::UserAgent()");

		return NULL;

	}

	HBufC8 *UAStringBuf = HBufC8::NewL(KMaxUserAgentStringLength);

	TPtr8 UAStringPtr = UAStringBuf->Des();

	UAStringPtr.Copy(iBrowserCenrepStr->Des());

	LOG_LEAVEFN("CUserAgent::UserAgent()");

	return UAStringBuf;

}

// ---------------------------------------------------------

// CUserAgent::MMSUserAgentL()

// Returns complete constructed MMS user agent string.

// ---------------------------------------------------------

EXPORT_C HBufC8* CUserAgent::MMSUserAgentL()

{

	LOG_ENTERFN("CUserAgent::MMSUserAgent()");

	TRAPD( ErrorCode,ReadMMSUserAgentStringL());

	if(ErrorCode != KErrNone)

	{

		LOG_WRITE_FORMAT("ERROR: ReadMMSUserAgentStringL failed! (%d) Returning NULL",ErrorCode);

		LOG_LEAVEFN("CUserAgent::MMSUserAgent()");

		return NULL;

	}

	HBufC8 *MMSUAStringBuf = HBufC8::NewL(KMaxUserAgentStringLength);

	TPtr8 UAStringPtr = MMSUAStringBuf->Des();

	UAStringPtr.Copy(iMMSCenrepStr->Des());

	LOG_LEAVEFN("CUserAgent::MMSUserAgent()");

	return MMSUAStringBuf;

}

// ---------------------------------------------------------

// CUserAgent::URLToUserAgentProfileL()

// Fetches URL to UA profile.

// ---------------------------------------------------------

EXPORT_C TInt CUserAgent::URLToUserAgentProfileL(TDes8 &aUAProfURL, TDes8 &aUAProfURL3G)

{

	LOG_ENTERFN("CUserAgent::URLToUserAgentProfileL()");

	TRAPD( ErrorCode,ReadURLUserAgentProfileL());

	if(ErrorCode != KErrNone)

	{

		LOG_WRITE_FORMAT("ERROR: ReadURLUserAgentProfileL failed! (%d) Returning NULL",ErrorCode);

		LOG_LEAVEFN("CUserAgent::URLToUserAgentProfileL()");

		return ErrorCode;

	}

	aUAProfURL.Copy(iUAProfURL->Des());

	aUAProfURL3G.Copy(iUAProfURL3G->Des());

	LOG_LEAVEFN("CUserAgent::URLToUserAgentProfileL()");

	return ErrorCode;

}

// ---------------------------------------------------------

// CUserAgent::ReadUserAgentStringL()

// Reads the UA string from cenrep

// ---------------------------------------------------------

void CUserAgent::ReadUserAgentStringL()

	{

	LOG_ENTERFN("CUserAgent::ReadUserAgentStringL()");

	TInt retCode (KErrNotReady);

	TBuf<64> ignoreConfig(0);

	// If the string queried already, dont read again

	if(iUAStrQueried)

		{

		LOG_WRITE("UA String already in cache. No read will be performed.");

		LOG_LEAVEFN("CUserAgent::ReadUserAgentDataL()");

		return;

		}

	if(!iRepository)

		{

		LOG_WRITE("Error: Repository doesn't exit or currupt!");

		LOG_LEAVEFN("CUserAgent::ReadUserAgentDataL()");

		User::Leave(KErrNotReady);

		}

	if(!iBrowserCenrepStr)

		{

		iBrowserCenrepStr = HBufC::NewL(KMaxUserAgentStringLength);	

		}

	TPtr tempPtr = iBrowserCenrepStr->Des();

	retCode = iRepository->Get(KWebUtilsIgnoreConfig, ignoreConfig);

	if(retCode != KErrNone || ignoreConfig == _L("0"))

		{/* ---------------- Read default UA string ---------------- */

			LOG_WRITE("Reading default UA string from cenrep.");

			retCode = iRepository->Get(EDefaultUserAgentString, tempPtr);

			if(retCode != KErrNone)

				{

				LOG_WRITE_FORMAT("Error: Reading default UA string from cenrep failed! (%d)",retCode);

				LOG_LEAVEFN("CUserAgent::ReadUserAgentDataL()");

				User::Leave(retCode);

				}

			if(!IsUAStringEmpty(tempPtr))

				{

				LOG_WRITE("Successfully read default UA string from cenrep, can use this as UA string");

				iUAStrQueried = TRUE;

				LOG_LEAVEFN("CUserAgent::ReadUserAgentDataL()");

				return;

				}

		}

	ReadAndCreateUAStringL(tempPtr);	

	LOG_WRITE("Successfully created a new UA string.");

	// Mark the flag to indicate successful read

	iUAStrQueried = TRUE;

    LOG_LEAVEFN("CUserAgent::ReadUserAgentDataL()");

    return;

	}

// ---------------------------------------------------------

// CUserAgent::IsUAStringEmpty()

// Checks if the UA string is empty or "NONE"

// ---------------------------------------------------------

bool CUserAgent::IsUAStringEmpty(const TPtr &aUAString)

	{

	return (aUAString.Compare(_L("NONE")) == 0 || aUAString.Length() == 0);

	}

// ---------------------------------------------------------

// CUserAgent::ReadMMSUserAgentStringL()

// Reads the MMS UA string from cenrep

// ---------------------------------------------------------

void CUserAgent::ReadMMSUserAgentStringL()

	{

	//  MMS UA Format: <HardwareType>; <Series60Version> <MIDP_CLDC Version>

	LOG_ENTERFN("CUserAgent::ReadMMSUserAgentStringL()");

	TInt retCode (KErrNotReady);

	// If the string queried already, dont read again

	if(iMMSUAStrQueried)

		{

		LOG_WRITE("MMS UA String already in cache. No read will be performed.");

		LOG_LEAVEFN("CUserAgent::ReadMMSUserAgentStringL()");

		return;

		}

	if(!iRepository)

		{

		LOG_WRITE("Error: Repository doesn't exit or currupt!");

		LOG_LEAVEFN("CUserAgent::ReadMMSUserAgentStringL()");

		User::Leave(KErrNotReady);// -1;	// Error code ?

		}

	/* ---------------- Read MMS default UA string ---------------- */

	if(!iMMSCenrepStr)

		{

		iMMSCenrepStr = HBufC::NewL(KMaxUserAgentStringLength);

		}

	LOG_WRITE("Default MMS UA string is to be read from cenrep");

	TPtr tempPtr = iMMSCenrepStr->Des();

	retCode = iRepository->Get(EDefaultMMSUserAgentString, tempPtr);

	if(retCode != KErrNone)

		{

		LOG_WRITE("Error: Reading default MMS UA string from cenrep failed!");

		LOG_LEAVEFN("CUserAgent::ReadMMSUserAgentStringL()");

		User::Leave(retCode);

		}

	if(!IsUAStringEmpty(tempPtr))

		{

		LOG_WRITE("Successfully read default MMS UA string from cenrep, can use this as MMS UA string");

		iMMSUAStrQueried = TRUE;

		LOG_LEAVEFN("CUserAgent::ReadMMSUserAgentStringL()");

		return;

		}

	/* ---------------- Read all variant fragments and build a UA string ---------------- */

	GetMMSFragmentsL();

			tempPtr.Append(iMMSHardwareType);

			tempPtr.Append(KSpaceChar);

			tempPtr.Append(iMMSS60Version);

			tempPtr.Append(KSpaceChar);

			tempPtr.Append(iMMSMIDPVersion);

			tempPtr.Append(KSpaceChar);

			tempPtr.Append(iMMSCLDCVersion);

	if(!IsUAStringEmpty(tempPtr))

		{	

			LOG_WRITE("Successfully created a new MMS UA string.");

		}

		else

		{

			LOG_WRITE("Failed to create a new MMS UA string...Exiting anyway");

		}

	iMMSUAStrQueried = TRUE;

  LOG_LEAVEFN("CUserAgent::ReadMMSUserAgentStringL()");

  return;

}

// ---------------------------------------------------------

// CUserAgent::GetFragmentsL()

// Gets all required fragments from CenRep

// ---------------------------------------------------------

TInt CUserAgent::GetCenRepFragment(TUserAgentStringKeys aFragmentType, TDes& fragmentValue)

	{

	TInt retCode(iRepository->Get(aFragmentType, fragmentValue));

	if(fragmentValue.Length() <= 0)

		{

		retCode = KErrNotReady;

		}

    return retCode;	

	}

// ---------------------------------------------------------

// CUserAgent::GetFragmentsL()

// Gets all required fragments from OSExt APIs/CenRep

// ---------------------------------------------------------

void CUserAgent::GetFragmentsL()

	{

	if(iSymbianVersion.Length() <= 0)

		{

		LOG_WRITE("Reading SymbianVersion from cenrep.");

		GetCenRepFragment(ESymbianOSVersion, iSymbianVersion);

		}

	if(iS60Version.Length() <= 0)

		{

		LOG_WRITE("Reading S60Version from cenrep.");

		GetCenRepFragment(ES60Version, iS60Version);

		}

	if(iHardwareType.Length() <= 0)

		{

		LOG_WRITE("Reading HardwareVersion from cenrep.");

		GetCenRepFragment(EHardwareType, iHardwareType);

		if(iHardwareType.Length() > 0)

			{ 		iHardwareType.Append(KPlaceHolderSemiColon); 

			}

		}

	if(iMIDPCLDCVersion.Length() <= 0)

		{

    	LOG_WRITE("Reading MIDPCLDCVersion from cenrep.");

    	GetCenRepFragment(EMIDP_CLDCVersion, iMIDPCLDCVersion);

		}

	//Only for 5.0 and above as 3.2 does not support OSExt APIs.

	#ifdef BRDO_BROWSER_50_FF

		if(iSymbianVersion.Length() <= 0 || iS60Version.Length() <= 0 || iHardwareType.Length() <= 0)

		{

			LOG_WRITE("Read from CenRep Failed... trying osext extended api");

			GetFragmentsFromOSExtL();

		}

	#endif

	}

// ---------------------------------------------------------

// CUserAgent::ReadAndCreateUAStringL()

// Reads verious fragments from OSExt APIs/CenRep and crates the UA string

// ---------------------------------------------------------

void CUserAgent::ReadAndCreateUAStringL(TPtr &aUAStringPtr)

	{

	GetFragmentsL();

	// Mozilla/5.0 (<Symbian Version> <Series60Version> <HardwareType> <MIDP_CLDC Version> ) AppleWebKit/413 (KHTML, like Gecko) BrowserName/Version

	aUAStringPtr.Copy(KPlaceHolderMozillaVer);

	aUAStringPtr.Append(KSpaceChar);

	if(iSymbianVersion.Length() > 0 || iS60Version.Length() > 0 || iHardwareType.Length() > 0 || iMIDPCLDCVersion.Length() > 0)

		{

			aUAStringPtr.Append(KPlaceHolderOpen);

			aUAStringPtr.Append(iSymbianVersion);

			aUAStringPtr.Append(KSpaceChar);

			aUAStringPtr.Append(iS60Version);

			aUAStringPtr.Append(KSpaceChar);

			aUAStringPtr.Append(iHardwareType);

			aUAStringPtr.Append(KSpaceChar);

			aUAStringPtr.Append(iMIDPCLDCVersion);

			aUAStringPtr.Append(KSpaceChar);

			aUAStringPtr.Append(KPlaceHolderClose);

		}

	aUAStringPtr.Append(KSpaceChar);

	aUAStringPtr.Append(KPlaceHolderComponent);	

	aUAStringPtr.Append(KSpaceChar);

	aUAStringPtr.Append(iBrowserNameAndVersionStr->Des());

	}

// ---------------------------------------------------------

// CUserAgent::ReadURLUserAgentProfileL()

// Reads the URL to UA profile from cenrep

// ---------------------------------------------------------

void CUserAgent::ReadURLUserAgentProfileL() 

{

    LOG_ENTERFN("CUserAgent::ReadURLUserAgentProfileL()");

	// If the string queried already, dont read again

	if(iURLUAProfQueried)

	{

		LOG_WRITE("URL to UA profile already in cache. No read will be performed.");

		LOG_LEAVEFN("CUserAgent::ReadURLUserAgentProfileL()");

		return;

	}

	if(!iRepository)

	{

		LOG_WRITE("Error: Repository doesn't exit or currupt!");

		LOG_LEAVEFN("CUserAgent::ReadURLUserAgentProfileL() - repository not instantiated");

		User::Leave(KErrNotReady);

	}

	/* ---------------- Read URL to 2G UA profile ---------------- */

	if(!iUAProfURL)

	{

		iUAProfURL = HBufC::NewL(KMaxUserAgentStringLength);

	}

	TPtr TempPtr2G = iUAProfURL->Des();

	TInt RetCode = iRepository->Get(EURLUAProfile, TempPtr2G);

	if(RetCode != KErrNone)

	{

		LOG_WRITE("Error: Reading URL to 2G UA profile from cenrep failed!");

		LOG_LEAVEFN("CUserAgent::ReadURLUserAgentProfileL()");

		User::Leave(RetCode);

	}

	/* ---------------- Read URL to 3G UA profile ---------------- */

	if(!iUAProfURL3G)

	{

		iUAProfURL3G = HBufC::NewL(KMaxUserAgentStringLength);

	}

	TPtr TempPtr3G = iUAProfURL3G->Des();

	RetCode = iRepository->Get(EURL3GUAProfile, TempPtr3G);

	if(RetCode != KErrNone)

	{

		delete iUAProfURL;

		iUAProfURL = NULL;

		LOG_WRITE("Error: Reading URL to 3G UA profile from cenrep failed!");

		LOG_LEAVEFN("CUserAgent::ReadURLUserAgentProfileL()");

		User::Leave(RetCode);

	}	

    iURLUAProfQueried = TRUE;

    LOG_LEAVEFN("CUserAgent::ReadURLUserAgentProfileL()");

    User::Leave(KErrNone);

}

#ifdef BRDO_BROWSER_50_FF

// ---------------------------------------------------------

// CUserAgent::GetFragmentsL()

// Gets all required fragments from OSExt

// ---------------------------------------------------------

void CUserAgent::GetFragmentsFromOSExtL()

	{

    RFs fs;

	CleanupClosePushL< RFs >( fs );

	User::LeaveIfError( fs.Connect() );

	if(iSymbianVersion.Length() <= 0)

		{

    	GetOSExtFragment(ESymbianOSVersion, iSymbianVersion, fs);

		}

	if(iS60Version.Length() <= 0)

		{

		GetOSExtFragment(ES60Version, iS60Version, fs);

		}