/*

* Copyright (c) 2006-2008 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:  provides uri parser methods for SVP 

*

*/

#include <uri8.h>

#include <sipstrings.h>    // For remote party data parsing

#include <sipfromheader.h> // For remote party data parsing

#include <sipaddress.h>    // For remote party data parsing

#include "svplogger.h"

#include "svpconsts.h"

#include "svpuriparser.h"

#include "svpcleanupresetanddestroy.h"

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

// CSVPUriParser::CSVPUriParser

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

//

CSVPUriParser::CSVPUriParser()

    {

    }

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

// CSVPUriParser::NewLC

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

//

CSVPUriParser* CSVPUriParser::NewLC()

    {

    CSVPUriParser* self = new ( ELeave ) CSVPUriParser;

    CleanupStack::PushL( self );

    return self;

    }

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

// CSVPUriParser::NewL

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

//

CSVPUriParser* CSVPUriParser::NewL()

    {

    CSVPUriParser* self = CSVPUriParser::NewLC();

    CleanupStack::Pop( self );

    return self;

    }

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

// CSVPUriParser::~CSVPUriParser

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

//

CSVPUriParser::~CSVPUriParser()

    {

    }

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

// CSVPUriParser::SetUserEqualsPhoneRequiredL

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

//

void CSVPUriParser::SetUserEqualsPhoneRequiredL( TBool aValue )

    {

    SVPDEBUG1( "CSVPUriParser::SetUserEqualsPhoneRequiredL" )

    iUserEqualsPhoneRequired = aValue;

    }

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

// CSVPUriParser::UserEqualsPhoneRequiredL

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

//

TBool CSVPUriParser::UserEqualsPhoneRequiredL() const

    {

    SVPDEBUG1( "CSVPUriParser::UserEqualsPhoneRequired In" )

    // check if user=phone is required

    SVPDEBUG2( "CSVPUriParser::UserEqualsPhoneRequired Out: %d",

           iUserEqualsPhoneRequired )

    return iUserEqualsPhoneRequired;    

    }

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

// CSVPUriParser::IsUriValidForUserEqualsPhoneL

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

//

TBool CSVPUriParser::IsUriValidForUserEqualsPhoneL( const TDesC8& aUri )

    {

    SVPDEBUG1( "CSVPUriParser::IsUriValidForUserEqualsPhoneL In" )

    /// flag to indicate if all checks are ok

    TBool userEqPhoneCheck = EFalse;    

    // Extract user info

    TUriParser8 uri8Parser;

    uri8Parser.Parse( aUri );

    CUri8* cUri8 = CUri8::NewLC( uri8Parser ); // CS:1

    const TUriC8& tempUri =  cUri8->Uri();

    const TDesC8& userInfo = tempUri.Extract( EUriUserinfo );

    TLex8 user( userInfo );

    TInt length = userInfo.Length();

    const TChar KSvpPlus( '+' );

    // Check if there is a preceeding plus

    if ( KSvpPlus == user.Peek() )

        {

        user.Inc();

        length--;

        }

    // Check the minimum length

    if ( KSVPMinUserInfoLength > length )

        {

        userEqPhoneCheck = EFalse;

        }

    else // Check that there is only digits

        {

        userEqPhoneCheck = ETrue;

        while ( !user.Eos() )

            {

            if ( !user.Peek().IsDigit() )

                {

                userEqPhoneCheck = EFalse;

                break;

                }

            user.Inc();

            }

        }

    CleanupStack::PopAndDestroy( cUri8 );

    SVPDEBUG2( "CSVPUriParser::IsUriValidForUserEqualsPhoneL Out: %d",

           userEqPhoneCheck )

    return userEqPhoneCheck;

    }

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

// CSVPUriParser::CompleteSipUriL

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

//

HBufC8* CSVPUriParser::CompleteSipUriL( 

    const TDesC8& aUri, const TDesC8& aAOR, TBool aIsEmergency ) const

    {

    SVPDEBUG1( "CSVPUriParser::CompleteSipUriL In" )

    // Copy the parameter to a new buffer.

    HBufC8* uri = aUri.AllocLC();

    // Trim ALL white space from URI, even if used as an user name

    uri->Des().TrimAll();

    if ( uri )

        {

        //First check is this tel-uri. Domain part is not allowed in tel-uri.

        if ( uri->Length() >= KTelPrefixLength &&

             KErrNotFound != uri->Des().Left( KTelPrefixLength ).Find( KTelPrefix ) &&

             KErrNotFound == uri->Des().Find( KSVPAt ) )

            {

            CleanupStack::Pop( uri );

            return uri;

            }

        // parse display name if exists

        while ( KErrNotFound != uri->Find( KSVPSipPrefix ) )

            {

            TInt index = uri->Find( KSVPSipPrefix );

            if ( 0 == index )

                {

                uri->Des().Delete( index, 4 );

                }

            else

                {

                uri->Des().Delete( 0, index );

                }

            }

        // Check "<" and remove it if exists

        if ( uri->Length() && CheckLeftBracket( *uri ) )

            {

            RemoveLeftBracket( uri );

            CleanupStack::Pop( 1 ); // uri, ReAlloc possible

            CleanupStack::PushL( uri );

            }

        // Check ">" and remove it if exists

        if ( uri->Length() && CheckRightBracket( *uri ) )

            {

            RemoveRightBracket( uri );

            CleanupStack::Pop( 1 ); // uri, ReAlloc possible

            CleanupStack::PushL( uri );

            }

        // Check "sips:" and remove it if exists

        if ( uri->Length() && CheckSipsPrefix( *uri ) )

            {

            RemoveSipsPrefixL( uri );

            CleanupStack::Pop( 1 ); // uri, ReAlloc possible

            CleanupStack::PushL( uri );

            }

        // Add "sip:" prefix, if it's missing.

        if ( !CheckSipPrefix( *uri ) )

            {

            AddSipPrefixL( uri );

            CleanupStack::Pop( 1 ); // uri, ReAlloc possible

            CleanupStack::PushL( uri );

            }

        // Add "@" character if it's missing

        if ( !CheckAt( *uri ) )

            {

            AddAtL( uri );

            CleanupStack::Pop( 1 ); // uri, ReAlloc possible

            CleanupStack::PushL( uri );

            }

        // Add domain, if it's missing

        if ( !CheckDomain( *uri ) )

            {

            AddDomainL( uri, aAOR );

            CleanupStack::Pop( 1 ); // uri, ReAlloc possible

            CleanupStack::PushL( uri );

            }

        EscapeEncodeSipUriL( uri, EscapeUtils::EEscapeNormal );

        CleanupStack::Pop( 1 ); // uri, ReAlloc possible

        CleanupStack::PushL( uri );

        // Emergency call has no knowledge of the service ID, therefore

        // user=phone parameter is omitted

        if ( !aIsEmergency &&

             IsUriValidForUserEqualsPhoneL( *uri ) && 

             UserEqualsPhoneRequiredL() )

            {

            AddUserEqualsPhoneL( uri );

            }

        }

    else

        {

        SVPDEBUG1( "    CSVPUriParser::CompleteSipUriL uri null" )

        }

    CleanupStack::Pop( 1 ); // uri

    SVPDEBUG1( "CSVPUriParser::CompleteSipUriL Out" )

    return uri;

    }

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

// CSVPUriParser::AddUserEqualsPhone

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

//

void CSVPUriParser::AddUserEqualsPhoneL( HBufC8*& aUri ) const

    {

    SVPDEBUG1( "CSVPUriParser::AddUserEqualsPhoneL In" )

    aUri = aUri->ReAllocL( aUri->Length() + 

                          KSVPUserEqualsPhoneLength + 

                          KSVPDoubleBracketLength ); 

    aUri->Des().Insert( 0, KSVPLeftBracketMark );

    aUri->Des().Append( KSVPUserEqualsPhone );

    aUri->Des().Append( KSVPRightBracketMark );

    SVPDEBUG1( "CSVPUriParser::AddUserEqualsPhoneL Out" )

    }

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

// CSVPUriParser::CompleteSecureSipUriL

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

//

HBufC8* CSVPUriParser::CompleteSecureSipUriL(

    const TDesC8& aUri, const TDesC8& aAOR ) const

    {

    SVPDEBUG1( "CSVPUriParser::CompleteSecureSipUriL In" )

    // Copy the parameter to a new buffer.

    HBufC8* uri = aUri.AllocLC();

    // Trim ALL white space from URI, even if used as an user name 

    uri->Des().TrimAll();

    if ( uri )

        {

        //First check is this tel-uri. Domain part is not allowed in tel-uri.

        if ( uri->Length() >= KTelPrefixLength &&

             KErrNotFound != uri->Des().Left( KTelPrefixLength ).Find( KTelPrefix ) &&

             KErrNotFound == uri->Des().Find( KSVPAt ) )

            {

            CleanupStack::Pop( uri );

            return uri;

            }

        // Check "<" and remove it if exists

        if ( uri->Length() && CheckLeftBracket( *uri ) )

            {

            RemoveLeftBracket( uri );

            CleanupStack::Pop( 1 ); // uri, ReAlloc possible

            CleanupStack::PushL( uri );

            }

        // Check ">" and remove it if exists

        if ( uri->Length() && CheckRightBracket( *uri ) )

            {

            RemoveRightBracket( uri );

            CleanupStack::Pop( 1 ); // uri, ReAlloc possible

            CleanupStack::PushL( uri );

            }

        // Check "sip:" and remove it if exists

        if ( uri->Length() && CheckSipPrefix( *uri ) )

            {

            RemoveSipPrefixL( uri );

            CleanupStack::Pop( 1 ); // uri, ReAlloc possible

            CleanupStack::PushL( uri );

            }

        // Add "sips:" prefix, if it's missing.

        if ( !CheckSipsPrefix( *uri ) )

            {

            AddSipsPrefixL( uri );

            CleanupStack::Pop( 1 ); // uri, ReAlloc possible

            CleanupStack::PushL( uri );

            }

        // Add "@" character if it's missing

        if ( !CheckAt( *uri ) )

            {

            AddAtL( uri );

            CleanupStack::Pop( 1 ); // uri, ReAlloc possible

            CleanupStack::PushL( uri );

            }

        // Add domain, if it's missing

        if ( !CheckDomain( *uri ) )

            {

            AddDomainL( uri, aAOR );

            CleanupStack::Pop( 1 ); // uri, ReAlloc possible

            CleanupStack::PushL( uri );

            }

        EscapeEncodeSipUriL( uri, EscapeUtils::EEscapeNormal );

        CleanupStack::Pop( 1 ); // uri, ReAlloc possible

        CleanupStack::PushL( uri );

        if ( UserEqualsPhoneRequiredL() &&

             IsUriValidForUserEqualsPhoneL( *uri ) )

            {

            AddUserEqualsPhoneL( uri );

            }

        }

    else

        {

        SVPDEBUG1( "    CSVPUriParser::CompleteSecureSipUriL uri null" )

        }

    CleanupStack::Pop( 1 ); // uri

    SVPDEBUG1( "CSVPUriParser::CompleteSecureSipUriL Out" )

    return uri;

    }

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

// CSVPUriParser::CompleteEventSipUriL

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

//

HBufC8* CSVPUriParser::CompleteEventSipUriL( const TDesC8& aUri ) const

    {

    SVPDEBUG1( "CSVPUriParser::CompleteEventSipUriL In" )

    // Copy the parameter to a new buffer.

    HBufC8* uri = aUri.AllocLC();

    // Add "sip:" prefix, if it's missing.

    if ( !CheckSipPrefix( *uri ) )

        {

        AddSipPrefixL( uri );

        }

    CleanupStack::Pop( 1 ); // uri

    SVPDEBUG1( "CSVPUriParser::CompleteEventSipUriL Out" )

    return uri;

    }

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

// CSVPUriParser::CheckSipPrefix

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

//

TBool CSVPUriParser::CheckSipPrefix( const TDesC8& aUri ) const

    {

    SVPDEBUG1( "CSVPUriParser::CheckSipPrefix" )

    // The "sip:" prefix is expected to be at the beginning of the URI.

    if ( KErrNotFound == aUri.Find( KSVPSipPrefix ) )

        {

        return EFalse;

        }

    else

        {

        return ETrue;    

        }

    }

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

// CSVPUriParser::CheckSipsPrefix

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

//

TBool CSVPUriParser::CheckSipsPrefix( const TDesC8& aUri ) const

    {

    SVPDEBUG1( "CSVPUriParser::CheckSipsPrefix" )

    // The "sip:" prefix is expected to be at the beginning of the URI.

    return ( 0 == aUri.Find( KSVPSipsPrefix ) );

    }

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

// CSVPUriParser::CheckAt

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

//

TBool CSVPUriParser::CheckAt( const TDesC8& aUri ) const

    {

    SVPDEBUG1( "CSVPUriParser::CheckAt" )

    // It is expected that there is atleast one character between 

    // "sip:" prefix and "@" character.

    return ( aUri.Find( KSVPAt ) >= KSVPSipPrefixLength );

    }

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

// CSVPUriParser::CheckDomain

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

//

TBool CSVPUriParser::CheckDomain( const TDesC8& aUri ) const

    {

    SVPDEBUG1( "CSVPUriParser::CheckDomain" )

    // Check whether the "@" chearacter is the last one.

    return ( aUri.Find( KSVPAt ) < aUri.Length() - 1 );

    }

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

// CSVPUriParser::DomainL

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

//

HBufC8* CSVPUriParser::DomainL( const TDesC8& aUri )

    {

    SVPDEBUG1( "CSVPUriParser::DomainL In" )

    HBufC8* ptr = NULL;

    // Check that URI is complete; it has domain part:

    if ( aUri.Find( KSVPAt ) < aUri.Length() - 1 )

        {

        TInt uriLength = aUri.Length();

        TInt atPos = aUri.Find( KSVPAt );

        //__ASSERT_ALWAYS( atPos != KErrNotFound, User::Leave( KErrArgument ) );

        TPtrC8 domainPart = aUri.Right( uriLength - atPos - 1 );

        ptr = domainPart.AllocL();

        }

    SVPDEBUG1( "CSVPUriParser::DomainL Out" )

    return ptr;

    }

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

// CSVPUriParser::AddSipPrefixL

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

//

void CSVPUriParser::AddSipPrefixL( HBufC8*& aUri ) const 

    {

    SVPDEBUG1( "CSVPUriParser::AddSipPrefixL In" )

    aUri = aUri->ReAllocL( aUri->Length() + KSVPSipPrefixLength );

    aUri->Des().Insert( 0, KSVPSipPrefix );

    SVPDEBUG1( "CSVPUriParser::AddSipPrefixL Out" )

    }

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

// CSVPUriParser::RemoveSipPrefixL

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

//

void CSVPUriParser::RemoveSipPrefixL( HBufC8*& aUri ) const 

    {

    SVPDEBUG1( "CSVPUriParser::RemoveSipPrefixL" )

    aUri->Des().Delete( 0, KSVPSipPrefixLength );

    }

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

// CSVPUriParser::AddSipsPrefixL

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

//

void CSVPUriParser::AddSipsPrefixL( HBufC8*& aUri ) const 

    {

    SVPDEBUG1( "CSVPUriParser::AddSipsPrefixL In" )

    aUri = aUri->ReAllocL( aUri->Length() + KSVPSipsPrefixLength );

    aUri->Des().Insert( 0, KSVPSipsPrefix );

    SVPDEBUG1( "CSVPUriParser::AddSipsPrefixL Out" )

    }

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

// CSVPUriParser::RemoveSipsPrefixL

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

//

void CSVPUriParser::RemoveSipsPrefixL( HBufC8*& aUri ) const 

    {

    SVPDEBUG1( "CSVPUriParser::RemoveSipsPrefixL" )

    aUri->Des().Delete( 0, KSVPSipsPrefixLength );

    }

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

// CSVPUriParser::AddAtL

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

//