--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/natfw/natfwunsaf_protocols/unsaf_codec/src/natfwunsaffingerprintattribute.cpp	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,209 @@
+/*
+* Copyright (c) 2006-2007 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:   
+*
+*/
+
+
+
+
+#include "natfwunsaffingerprintattribute.h"
+#include "natfwunsafmessage.h"
+#include "natfwunsafutils.h"
+#include "natfwunsaflog.h"
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFFingerprintAttribute::DecodeL
+// -----------------------------------------------------------------------------
+//
+CNATFWUNSAFFingerprintAttribute*
+CNATFWUNSAFFingerprintAttribute::DecodeL(const TDesC8& aValue)
+    {
+    CNATFWUNSAFFingerprintAttribute* self =
+        new (ELeave) CNATFWUNSAFFingerprintAttribute();
+    CleanupStack::PushL(self);
+    self->DecodeValueL(aValue);
+    CleanupStack::Pop(self);
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFFingerprintAttribute::NewL
+// -----------------------------------------------------------------------------
+//
+CNATFWUNSAFFingerprintAttribute*
+CNATFWUNSAFFingerprintAttribute::NewL(CBufBase& aNATFWUNSAFMessage)
+    {
+    CNATFWUNSAFFingerprintAttribute* self =
+        CNATFWUNSAFFingerprintAttribute::NewLC(aNATFWUNSAFMessage);
+    CleanupStack::Pop(self);
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFFingerprintAttribute::NewLC
+// -----------------------------------------------------------------------------
+//
+CNATFWUNSAFFingerprintAttribute*
+CNATFWUNSAFFingerprintAttribute::NewLC(CBufBase& aNATFWUNSAFMessage)
+    {
+    CNATFWUNSAFFingerprintAttribute* self =
+        new (ELeave) CNATFWUNSAFFingerprintAttribute();
+    CleanupStack::PushL(self);
+    self->ConstructL(aNATFWUNSAFMessage);
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFFingerprintAttribute::DecodeAttributeL
+// -----------------------------------------------------------------------------
+//
+CNATFWUNSAFAttribute*
+CNATFWUNSAFFingerprintAttribute::DecodeAttributeL(
+    const TDesC8& aByteStream)
+    {
+    CheckLengthL(aByteStream);
+
+    return DecodeL(aByteStream.Mid(EValueOffset));
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFFingerprintAttribute::CNATFWUNSAFFingerprintAttribute
+// -----------------------------------------------------------------------------
+//
+CNATFWUNSAFFingerprintAttribute::CNATFWUNSAFFingerprintAttribute()
+    {
+
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFFingerprintAttribute::ConstructL
+// Update message header's length field to include the FINGERPRINT before
+// computing the CRC-32.
+// -----------------------------------------------------------------------------
+//
+void CNATFWUNSAFFingerprintAttribute::ConstructL(CBufBase& aNATFWUNSAFMessage)
+    {
+    __ASSERT_ALWAYS(aNATFWUNSAFMessage.Size(), User::Leave(KErrArgument));
+    TInt length = CNATFWUNSAFMessage::MessageLength(aNATFWUNSAFMessage.Ptr(0));
+    CNATFWUNSAFMessage::SetMessageLength(aNATFWUNSAFMessage,
+        length + EValueOffset + EAttributeValueSize);
+
+    ComputeCRC32(aNATFWUNSAFMessage, iCRC);
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFFingerprintAttribute::~CNATFWUNSAFFingerprintAttribute
+// -----------------------------------------------------------------------------
+//
+CNATFWUNSAFFingerprintAttribute::~CNATFWUNSAFFingerprintAttribute()
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFFingerprintAttribute::Type
+// -----------------------------------------------------------------------------
+//
+CNATFWUNSAFAttribute::TType CNATFWUNSAFFingerprintAttribute::Type() const
+    {
+    return EFingerprint;
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFFingerprintAttribute::EncodeValueL
+// -----------------------------------------------------------------------------
+//
+HBufC8* CNATFWUNSAFFingerprintAttribute::EncodeValueL() const
+    {
+    HBufC8* encodedValue = HBufC8::NewLC(EAttributeValueSize);
+
+    TPtr8 ptr = encodedValue->Des();
+    ptr.FillZ(EAttributeValueSize);
+
+    TUint32 value(iCRC);
+    NATFWUNSAFUtils::WriteNetworkOrder32L(ptr, 0, value);
+
+    CleanupStack::Pop(encodedValue);
+    return encodedValue;
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFFingerprintAttribute::CheckLengthL
+// This attribute has a fixed length
+// -----------------------------------------------------------------------------
+//
+void CNATFWUNSAFFingerprintAttribute::CheckLengthL(
+    const TDesC8& aByteStream)
+    {
+    __ASSERT_ALWAYS(ParseLengthL(aByteStream) == EAttributeValueSize,
+                    User::Leave(KErrCorrupt));
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFFingerprintAttribute::CheckFingerprintL
+// Exclude FINGERPRINT attribute from CRC-32 computing. It is located at the
+// end of the message.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C TBool CNATFWUNSAFFingerprintAttribute::CheckFingerprintL(
+    const TDesC8& aNATFWUNSAFMessage) const
+    {
+    TInt KFingerprintSize = static_cast<TInt>(EValueOffset) +
+        static_cast<TInt>(EAttributeValueSize);
+    //Check there is enough data
+    __ASSERT_ALWAYS(aNATFWUNSAFMessage.Length() >= KFingerprintSize,
+                    User::Leave(KErrArgument));
+
+    CBufBase* message = CBufFlat::NewL(
+        aNATFWUNSAFMessage.Length() - KFingerprintSize);
+    CleanupStack::PushL(message);
+    message->InsertL(0,
+                     aNATFWUNSAFMessage,
+                     aNATFWUNSAFMessage.Length() - KFingerprintSize);
+
+    TUint32 crc(0);
+    ComputeCRC32(*message, crc);
+
+    TBool match = (crc == iCRC);
+    NATFWUNSAF_INTLOG("Checking FINGERPRINT, match", match)
+
+    CleanupStack::PopAndDestroy(message);
+    return match;
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFFingerprintAttribute::DecodeValueL
+// -----------------------------------------------------------------------------
+//
+void CNATFWUNSAFFingerprintAttribute::DecodeValueL(const TDesC8& aValue)
+    {
+    __ASSERT_ALWAYS(aValue.Length() == EAttributeValueSize,
+        User::Leave(KErrCorrupt));
+    iCRC = BigEndian::Get32(aValue.Ptr());
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFFingerprintAttribute::ComputeCRC32
+// -----------------------------------------------------------------------------
+//
+void CNATFWUNSAFFingerprintAttribute::ComputeCRC32(
+    CBufBase& aNATFWUNSAFMessage,
+    TUint32& aCRC) const
+    {
+    // Perform the CCITT CRC-32 checksum on the message
+    Mem::Crc32(aCRC, aNATFWUNSAFMessage.Ptr(0).Ptr(),
+        sizeof(aNATFWUNSAFMessage));
+    // XOR according to RFC3489-bis05
+    aCRC ^= EXORedValue;
+    }