--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/email/imap4mtm/imapsession/inc/cimapauthhelpers.h	Thu Dec 17 08:44:11 2009 +0200
@@ -0,0 +1,145 @@
+// Copyright (c) 2008-2009 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:
+// IMAPAUTHHELPERS.H
+// This file specifies the "helper" classes that generate the Client responses 
+// for a particular Imap Auth mechanism. The last Server message is required 
+// to generate the Client response
+// 
+//
+
+#if !defined(_IMAPAUTHHELPERS_H__)
+#define _IMAPAUTHHELPERS_H__
+
+#include <imcvcodc.h>
+#include <imapset.h>
+#include "cimapsettings.h"
+#include <hash.h>				//hashing functions for Cramm Md5
+#include <imcvcodc.h>
+#include <timrfc822datefield.h>
+#include "cimapcommand.h"
+
+#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS  
+#include "timrfc822datefield.h"	
+#endif
+
+class MOutputStream;
+
+/**
+CImapAuthMechanismHelper is the base class for IMAP4 AUTH command.
+Using this class SASL (Simple Authentication and Security Layer) mechanisms 
+can be exteneded.
+Right now CRAM-MD5, PLAIN and LOGIN authentication mechanisms are supported.
+
+@internalComponent
+@prototype
+*/
+NONSHARABLE_CLASS ( CImapAuthMechanismHelper) : public CImapCommandEx
+{
+public:
+	enum TImapAuthProfileFlag
+		{
+		ENoProfile=0x00,
+		EPlain=0x01,
+		ELogin=0x02,
+		ECramMD5=0x04,
+		EUndefined=0x08, // must be last flag
+		};
+protected:
+	CImapAuthMechanismHelper(const CImapSettings& aSettings,CImapFolderInfo* aSelectedFolderData, TInt aLogId);
+	const CImapSettings& iSettings;
+	TBuf8<KImMailMaxBufferSize> iNextClientMessage;
+	};
+
+/**
+CImapAuthPlainMechanismHelper class is extended to support the AUTH command as 
+specified in RFC2195, to indicate PLAIN authentication mechanism to the server.
+
+@internalComponent
+@prototype
+*/
+NONSHARABLE_CLASS ( CImapAuthPlainMechanismHelper) : public CImapAuthMechanismHelper
+
+	{
+public:
+	static CImapAuthPlainMechanismHelper* NewL(const CImapSettings& aSettings,CImapFolderInfo* aSelectedFolderData, TInt aLogId);
+public:
+	void SendMessageL(TInt aTagId, MOutputStream& aStream);
+	void ParseContinuationResponseL();
+private:
+	CImapAuthPlainMechanismHelper(const  CImapSettings& aSettings,CImapFolderInfo* aSelectedFolderData, TInt aLogId);
+	void ConstructL();
+	TImCodecB64 iEncoder;
+	MOutputStream* iStream;
+	};
+
+/**
+CImapAuthLoginMechanismHelper class is extended to support the AUTH command as 
+specified in RFC2195, to indicate LOGIN authentication mechanism to the server.
+
+@internalComponent
+@prototype
+*/
+NONSHARABLE_CLASS (CImapAuthLoginMechanismHelper) : public CImapAuthMechanismHelper
+
+	{
+public:
+	static CImapAuthLoginMechanismHelper* NewL(const CImapSettings& aSettings,CImapFolderInfo* aSelectedFolderData, TInt aLogId);
+	~CImapAuthLoginMechanismHelper();
+public:
+	void SendMessageL(TInt aTagId, MOutputStream& aStream);
+	void ParseContinuationResponseL();
+private:
+	CImapAuthLoginMechanismHelper(const  CImapSettings& aSettings,CImapFolderInfo* aSelectedFolderData, TInt aLogId);
+	void ConstructL();
+	
+private:
+	enum TLoginState
+		{
+		ESendingLoginName=0,
+		ESendingPassword,
+		};
+	TLoginState iState;
+	TImCodecB64 iEncoder;
+	HBufC8* iBase64LoginName;
+	HBufC8* iBase64Password;
+	MOutputStream* iStream;
+	};
+
+/**
+CImapAuthCramMd5MechanismHelper class is extended to support the AUTH command as 
+specified in RFC2195, to indicate CRAM-MD5 authentication mechanism to the server.
+
+@internalComponent
+@prototype
+*/
+NONSHARABLE_CLASS ( CImapAuthCramMd5MechanismHelper) : public CImapAuthMechanismHelper
+{
+public:
+	static CImapAuthCramMd5MechanismHelper* NewL(const CImapSettings& aSettings,CImapFolderInfo* aSelectedFolderData, TInt aLogId);
+	~CImapAuthCramMd5MechanismHelper();
+public:
+	void SendMessageL(TInt aTagId, MOutputStream& aStream);
+	void ParseContinuationResponseL();
+private:
+	CImapAuthCramMd5MechanismHelper(const CImapSettings& aSettings,CImapFolderInfo* aSelectedFolderData, TInt aLogId);
+	void ConstructL();
+private:
+	TPtr8 FormSharedSecret(TPtr8 aPassword);
+private:
+	TImCodecB64 iEncoder;
+	CMD5* iMd5Hash;
+	MOutputStream* iStream;
+	};
+#endif
+