/*

* Copyright (c) 2009-2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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:  VoIP settings XML handler

*

*/

#include <e32base.h>

#include <GMXMLParser.h>

#include <GMXMLDocument.h>

#include <GMXMLNode.h>

#include <GMXMLElement.h>

#include <GMXMLText.h>

#include <e32cmn.h>

#include <e32def.h>

#include "voipxmlparser.h"

#include "voipxmlparamhandler.h"

#include "voipxmlprocessordefaults.h"

#include "voipxmlprocessorlogger.h"

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

// CVoipXmlParser::NewL

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

//

EXPORT_C CVoipXmlParser* CVoipXmlParser::NewL()

    {

    CVoipXmlParser* self = NewLC();

    CleanupStack::Pop( self );

    return self;

    }

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

// CVoipXmlParser::NewLC

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

//

EXPORT_C CVoipXmlParser* CVoipXmlParser::NewLC()

    {

    CVoipXmlParser* self = new ( ELeave ) CVoipXmlParser();

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

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

// CVoipXmlParser::ConstructL

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

//

void CVoipXmlParser::ConstructL()

    {

DBG_PRINT( "CVoipXmlParser::ConstructL begin" );

    iParser = CMDXMLParser::NewL( this );

    iParamHandler = CVoipXmlParamHandler::NewL();

    iDescription = HBufC::NewL( 0 );

    iBrandUrl = HBufC::NewL( 0 );

DBG_PRINT( "CVoipXmlParser::ConstructL end" );

    }

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

// CVoIPXmlHandler::~CVoIPXmlHandler()

// Destructor

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

//

CVoipXmlParser::~CVoipXmlParser()

    {

    delete iParser;

    delete iParamHandler;

    if ( iXmlDoc )

        {

        delete iXmlDoc;

        }

    if ( iDescription )

        {

        delete iDescription;

        }

    if( iBrandUrl )

        {

        delete iBrandUrl;

        }

    }

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

// CVoipXmlParser::CVoipXmlParser

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

//

CVoipXmlParser::CVoipXmlParser()

    {

    }

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

// CVoipXmlParser::ImportDocumentL

// Reads document.

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

//

EXPORT_C TInt CVoipXmlParser::ImportDocument( RFile& aFile, 

    TUint32& aServiceTabId )

    {

    DBG_PRINT( "CVoipXmlParser::ImportDocumentL - begin" );

    iParseDescription = EFalse;

    iParser->ParseFile( aFile );

    CActiveScheduler::Start();

    if ( KErrNone == iError )

        {

        iError = iParamHandler->StoreSettings();

        }

    if ( KErrNone == iError )

        {

        // Give other applications 2 seconds to react

        // to the newly created service.

        const TInt KTwoSeconds( 2000000 );

        User::After( KTwoSeconds );

        aServiceTabId = iParamHandler->ServiceTabId();

        }

    DBG_PRINT2( "CVoipXmlParser::ImportDocumentL - end (%d)", iError );

    return iError;

    }

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

// CVoipXmlParser::ReadDescription

// Reads document description.

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

//

EXPORT_C HBufC* CVoipXmlParser::ReadDescriptionLC( RFile& aFile, 

    TDes8& aBrandUrl )

    {

    DBG_PRINT( "CVoipXmlParser::ReadDescriptionLC begin" );

    iParseDescription = ETrue;

    iParser->ParseFile( aFile );

    CActiveScheduler::Start();

    if ( !iDescription )

        {

        iDescription = HBufC::NewL( 0 );

        }

    HBufC* buf = HBufC::NewLC( iDescription->Des().Length() );

    buf->Des().Copy( iDescription->Des() );

    if ( !iBrandUrl )

        {

        iBrandUrl = HBufC::NewL( 0 );

        }

    aBrandUrl.Copy( iBrandUrl->Des() );

    DBG_PRINT( "CVoipXmlParser::ReadDescriptionLC end" );

    return buf;

    }

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

// From base class MMDXMLParserObserver.

// CVoipXmlParser::ParseFileCompleteL

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

//

void CVoipXmlParser::ParseFileCompleteL()

    {

    DBG_PRINT( "CVoipXmlParser::ParseFileCompleteL - begin" );

    // We may have already received XML document from iParser since we

    // commit two parsing operations (first the description and then the

    // settings). Thus we need to delete iXmlDoc because iParser has given

    // its responsibility here.

    if ( iXmlDoc )

        {

        delete iXmlDoc;

        iXmlDoc = NULL;

        }

    iXmlDoc = iParser->DetachXMLDoc();

    CActiveScheduler::Stop();

    if ( !iXmlDoc )

        {

        iError = KErrCorrupt;

        return;

        }

    CMDXMLElement* xmlElement = iXmlDoc->DocumentElement();

    if ( !xmlElement )

        {

        iError = KErrCorrupt;

        DBG_PRINT( "CVoipXmlParser::ParseFileCompleteL - end KErrCorrupt" );

        return;

        }

    if ( iParseDescription )

        {

        ParseDescription( *xmlElement );

        }

    else

        {

        ParseRoot( *xmlElement );

        }

    DBG_PRINT( "CVoipXmlParser::ParseFileCompleteL - end" );

    }

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

// Parses description node.

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

//

void CVoipXmlParser::ParseDescription( CMDXMLElement& aXmlElement )

    {

    CMDXMLNode* node = aXmlElement.FirstChild();

    if ( !node )

        {

        iError = KErrCorrupt;

        return;

        }

    TBuf<KMaxNodeNameLength> nodeName;

    nodeName.Copy( node->NodeName() );

    nodeName.LowerCase();

    // <nokia-confdoc> is the root node; thus parse it first.

    while ( nodeName != KNodeNokiaConfDoc && node )

        {

        node = node->NextSibling();

        if ( !node )

            {

            DBG_PRINT( "CVoipXmlParser::ParseRoot - end KErrEof" );

            iError = KErrEof;

            return;

            }

        nodeName.Copy( node->NodeName() );

        nodeName.LowerCase();

        }

    // After <nokia-confdoc> has been found, search for <confdescription>

    // and <confbrandurl> from its children.

    node = node->FirstChild();

    while ( node )

        {

        nodeName.Copy( node->NodeName() );

        nodeName.LowerCase();

        CMDXMLNode* child = node->FirstChild();

        if ( KNodeConfDescription() == nodeName && child && 

            CMDXMLNode::ETextNode == child->NodeType() )

            {

            CMDXMLText* text = NULL;

            text = static_cast<CMDXMLText*>( child );

            delete iDescription;

            iDescription = NULL;

            TRAP_IGNORE( iDescription = text->Data().AllocL() );

            }

        else if ( KNodeConfBrandUrl() == nodeName && child && 

            CMDXMLNode::ETextNode == child->NodeType() )

            {

            CMDXMLText* text = NULL;

            text = static_cast<CMDXMLText*>( child );

            delete iBrandUrl;

            iBrandUrl = NULL;

            TRAP_IGNORE( iBrandUrl = text->Data().AllocL() );

            }

        node = node->NextSibling();

        }

    }

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

// CVoipXmlParser::ParseRoot

// Parses root node.

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

//

void CVoipXmlParser::ParseRoot( CMDXMLElement& aXmlElement )

    {

    DBG_PRINT( "CVoipXmlParser::ParseRoot - begin" );

    CMDXMLNode* node = aXmlElement.FirstChild();

    if ( !node )

        {

        iError = KErrCorrupt;

        return;

        }

    TBuf<KMaxNodeNameLength> nodeName;

    nodeName.Copy( node->NodeName() );

    nodeName.LowerCase();

    while ( nodeName != KNodeNokiaConfDoc )

        {

        node = node->NextSibling();

        if ( !node )

            {

            DBG_PRINT( "CVoipXmlParser::ParseRoot - end KErrEof" );

            iError = KErrEof;

            return;

            }

        nodeName.Copy( node->NodeName() );

        nodeName.LowerCase();

        }

    node = node->FirstChild();

    TInt settingsCount( 0 );

    while ( node )

        {

        nodeName.Copy( node->NodeName() );

        nodeName.LowerCase();

        // At this level in XML tree only 'settings' nodes are allowed.

        if ( nodeName == KNodeSettings )

            {

            ParseSettings( node );

            settingsCount++;

            }

        node = node->NextSibling();

        }

    if ( !settingsCount )

        {

        iError = KErrAbort;

        }

    DBG_PRINT( "CVoipXmlParser::ParseRoot - end" );

    }

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

// CVoipXmlParser::ParseSettingsL

// Parses 'settings' nodes.

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

//

void CVoipXmlParser::ParseSettings( CMDXMLNode* aXmlNode )

    {

    DBG_PRINT( "CVoipXmlParser::ParseSettings - begin" );

    if ( CMDXMLNode::EElementNode != aXmlNode->NodeType() )

        {

        DBG_PRINT( 

            "CVoipXmlParser::ParseSettings - node type not element, end" );

        iError = KErrBadHandle;

        return;

        }

    CMDXMLElement* element = NULL;

    element = static_cast<CMDXMLElement*>( aXmlNode );

    TPtrC attributeValue;

    element->GetAttribute( KAttributeType(), attributeValue );

    if ( !attributeValue.Length() )

        {

        DBG_PRINT( 

            "CVoipXmlParser::ParseSettings - attribute type not ok, end" );

        iError = KErrBadName;

        }

    iParamHandler->SettingsStart( attributeValue );

    CMDXMLNode* node = element->FirstChild();

    while ( node )

        {

        if ( node->NodeType() == CMDXMLNode::EElementNode )

            {

            TBuf<KMaxNodeNameLength> nodeName;

            nodeName.Copy( node->NodeName() );

            nodeName.LowerCase();

            element = NULL;

            element = static_cast<CMDXMLElement*>( node );

            if ( KNodeParam() == nodeName )

                {

                TPtrC nameVal;

                element->GetAttribute( KAttributeName(), nameVal );

                if ( nameVal.Length() )

                    {

                    TPtrC attVal;

                    element->GetAttribute( KAttributeValue(), attVal );

                        {

                        if ( attVal.Length() )

                            {

                            iParamHandler->HandleParameter( 

                                nameVal, attVal );

                            }

                        }

                    }

                }

            else if ( KNodeSettings() == nodeName )

                {

                ParseSettings( element );

                }

            }

        node = node->NextSibling();

        }

    iParamHandler->SettingsEnd();

    DBG_PRINT( "CVoipXmlParser::ParseSettings - end" );

    }

// End of file.