--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/natplugins/natpnatfwsdpprovider/src/nsputil.cpp	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,290 @@
+/*
+* Copyright (c) 2007 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:  Utility class implementation.
+*
+*/
+
+#include <sdpcodecstringpool.h>
+#include <sdpcodecstringconstants.h>
+#include <sdpdocument.h>
+#include <sdpconnectionfield.h>
+#include <sdporiginfield.h>
+#include <sdpmediafield.h>
+#include "natfwcandidate.h"
+#include "nsputil.h"
+#include "nspdefs.h"
+#include "nspmediastream.h"
+
+const TUint KMaxLengthOfFQDN = 255;
+const TUint KRejectPort = 0;
+
+// ======== MEMBER FUNCTIONS ========
+// ---------------------------------------------------------------------------
+// NSPUtil::FindMediaStream
+// ---------------------------------------------------------------------------
+//
+CNSPMediaStream* NSPUtil::FindMediaStream( const CSdpMediaField& aMediaField,
+        RPointerArray<CNSPMediaStream>& aMediaStreams )
+    {
+    const TInt mediastreamscount( aMediaStreams.Count() );
+    for ( TInt index = 0; index < mediastreamscount; index++ )
+        {
+        if ( aMediaStreams[index]->MediaField().Media() == aMediaField.Media() )
+            {
+            return aMediaStreams[index];
+            }
+        }
+    
+    return NULL;
+    }
+
+
+// ---------------------------------------------------------------------------
+// NSPUtil::FindMediaStream
+// ---------------------------------------------------------------------------
+//
+CNSPMediaStream* NSPUtil::FindMediaStream(
+        const CNSPMediaStream& aMediaStream,
+        RPointerArray<CNSPMediaStream>& aMediaStreams )
+    {
+    const TInt mediastreamscount( aMediaStreams.Count() );
+    for ( TInt index = 0; index < mediastreamscount; index++ )
+        {
+        if ( aMediaStreams[index]->MediaField().Media() ==
+             aMediaStream.MediaField().Media() )
+            {
+            return aMediaStreams[index];
+            }
+        }
+    
+    return NULL;
+    }
+
+
+// ---------------------------------------------------------------------------
+// NSPUtil::FindMediaField
+// ---------------------------------------------------------------------------
+//
+CSdpMediaField* NSPUtil::FindMediaField( const CNSPMediaStream& aMediaStream,
+        RPointerArray<CSdpMediaField>& aMediaFields )
+    {
+    const TInt mediafieldscount( aMediaFields.Count() );
+    for ( TInt index = 0; index < mediafieldscount; index++ )
+        {
+        if ( aMediaFields[index]->Media() == aMediaStream.MediaField().Media() )
+            {
+            return aMediaFields[index];
+            }
+        }
+    
+    return NULL;
+    }
+
+
+// ---------------------------------------------------------------------------
+// NSPUtil::FindMediaField
+// ---------------------------------------------------------------------------
+//
+CSdpMediaField* NSPUtil::FindMediaField( const CSdpMediaField& aMediaField,
+        RPointerArray<CSdpMediaField>& aMediaFields )
+    {
+    const TInt mediafieldscount( aMediaFields.Count() );
+    for ( TInt index = 0; index < mediafieldscount; index++ )
+        {
+        if ( aMediaFields[index]->Media() == aMediaField.Media() )
+            {
+            return aMediaFields[index];
+            }
+        }
+    
+    return NULL;
+    }
+
+
+// ---------------------------------------------------------------------------
+// NSPUtil::SortCandidatesL
+// ---------------------------------------------------------------------------
+//
+void NSPUtil::SortCandidatesL( RPointerArray<CNATFWCandidate>& aLocalCands )
+    {
+    __ASSERT_ALWAYS( &aLocalCands, User::Leave( KErrArgument ) );
+    __ASSERT_ALWAYS( aLocalCands.Count(), User::Leave( KErrArgument ) );
+    
+    TLinearOrder<CNATFWCandidate> order( CNATFWCandidate::PriorityOrder );
+    aLocalCands.Sort( order );
+    }
+
+
+// ---------------------------------------------------------------------------
+// NSPUtil::UpdateConnectionFieldL
+// ---------------------------------------------------------------------------
+//
+void NSPUtil::UpdateConnectionFieldL(
+        CSdpConnectionField& aField, const TDesC8& aAddress )
+    {
+    __ASSERT_ALWAYS( &aField, User::Leave( KErrArgument ) );
+    __ASSERT_ALWAYS( &aAddress != NULL, User::Leave( KErrArgument ) );
+    
+    TBool unspecf( EFalse );
+    RStringF netType = aField.NetType();
+    RStringF addressType = aField.AddressType();
+    const TDesC8& address = aField.Address();
+    
+    TInetAddr addr;
+    HBufC* addrBuf = HBufC::NewLC( KMaxLengthOfFQDN );
+    TPtr addrPtr( addrBuf->Des() );
+    addrPtr.Copy( address );
+    
+    if ( !addr.Input( addrBuf->Des() ) ) // valid IP
+        {
+        unspecf = addr.IsUnspecified();
+        addrPtr.Copy( aAddress );
+        
+        if ( !unspecf && !addr.Input( addrBuf->Des() ) )
+            {
+            CSdpConnectionField* field = CSdpConnectionField::NewL( addr );
+            addressType = field->AddressType();
+            delete field;
+            }
+        }
+    
+    if ( !unspecf )
+        {
+        aField.SetAddressL( netType, addressType, aAddress );
+        }
+    
+    CleanupStack::PopAndDestroy( addrBuf );
+    }
+
+
+// ---------------------------------------------------------------------------
+// NSPUtil::UpdateOriginFieldL
+// ---------------------------------------------------------------------------
+//
+void NSPUtil::UpdateOriginFieldL(
+        CSdpOriginField& aField, const TDesC8& aAddress )
+    {
+    __ASSERT_ALWAYS( &aField, User::Leave( KErrArgument ) );
+    __ASSERT_ALWAYS( &aAddress != NULL, User::Leave( KErrArgument ) );
+    
+    TBool unspecf( EFalse );
+    RStringF netType = aField.NetType();
+    RStringF addressType = aField.AddressType();
+    const TDesC8& address = aField.Address();
+    
+    TInetAddr addr;
+    HBufC* addrBuf = HBufC::NewLC( KMaxLengthOfFQDN );
+    TPtr addrPtr( addrBuf->Des() );
+    addrPtr.Copy( address );
+    
+    if ( !addr.Input( addrBuf->Des() ) ) // valid IP
+        {
+        unspecf = addr.IsUnspecified();
+        addrPtr.Copy( aAddress );
+        
+        if ( !unspecf && !addr.Input( addrBuf->Des() ) )
+            {
+            CSdpConnectionField* field = CSdpConnectionField::NewL( addr );
+            addressType = field->AddressType();
+            delete field;
+            }
+        }
+    
+    if ( !unspecf )
+        {
+        aField.SetAddressL( aAddress, netType, addressType );
+        }
+    
+    CleanupStack::PopAndDestroy( addrBuf );    
+    }
+
+
+// ---------------------------------------------------------------------------
+// NSPUtil::RejectL
+// ---------------------------------------------------------------------------
+//
+void NSPUtil::RejectL( CSdpMediaField& aField )
+    {
+    __ASSERT_ALWAYS( &aField, User::Leave( KErrArgument ) );
+    aField.SetPortL( KRejectPort );
+    }
+
+
+// ---------------------------------------------------------------------------
+// NSPUtil::IsReject
+// ---------------------------------------------------------------------------
+//
+TBool NSPUtil::IsReject( const CSdpMediaField& aField )
+    {
+    if ( &aField )
+        {
+        return ( KRejectPort == aField.Port() );
+        }
+    else
+        {
+        return EFalse;
+        }
+    }
+
+
+// ---------------------------------------------------------------------------
+// NSPUtil::IsDuplicate
+// ---------------------------------------------------------------------------
+//
+TBool NSPUtil::IsDuplicate( const CNATFWCandidate& aCand,
+        const RPointerArray<CNATFWCandidate>& aCandidates )
+    {
+    const TUint candidatecount( aCandidates.Count() );
+    for ( TUint index = 0; index < candidatecount; index++ )
+        {
+        if ( aCand == *aCandidates[index] )
+            {
+            return ETrue;
+            }
+        }
+    
+    return EFalse;
+    }
+
+
+// ---------------------------------------------------------------------------
+// NSPUtil::IsUnspecifiedL
+// ---------------------------------------------------------------------------
+//
+TBool NSPUtil::IsUnspecifiedL( const TDesC8& aAddress, TUint aPort )
+	{
+	TInetAddr addr;
+	TRAPD( error, addr = ConvertTDesC8ToTInetAddrL( aAddress, aPort ) );
+	User::LeaveIfError( KErrNoMemory == error ? KErrNoMemory : KErrNone );
+	return ( KErrNone == error ? addr.IsUnspecified() : EFalse );
+	}
+
+
+// ---------------------------------------------------------------------------
+// NSPUtil::CleanupArrayItem
+// ---------------------------------------------------------------------------
+//
+void NSPUtil::CleanupArrayItem( TAny* anArray )
+    {
+    if ( anArray )
+        {
+        reinterpret_cast< RPointerArray<CNATFWCandidate>* >( anArray )->
+            ResetAndDestroy();
+        reinterpret_cast< RPointerArray<CNATFWCandidate>* >( anArray )->
+            Close();
+        }
+    }
+
+
+// end of file