mtpfws/mtpfw/daemon/server/src/cmtpserversession.cpp
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     1 // Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description:
       
    14 //
       
    15 
       
    16 /**
       
    17  @file
       
    18  @internalTechnology
       
    19 */
       
    20 
       
    21 #include "cmtpconnectionmgr.h"
       
    22 #include "cmtpserversession.h"
       
    23 #include "rmtpframework.h"
       
    24 #include "cmtpframeworkconfig.h"
       
    25 #include "cmtpdataprovidercontroller.h"
       
    26 #include "cmtpparserrouter.h"
       
    27 #include "e32def.h"
       
    28 __FLOG_STMT(_LIT8(KComponent,"ServerSession");)
       
    29 
       
    30 
       
    31 /**
       
    32 Constructor.
       
    33 */
       
    34 CMTPServerSession::CMTPServerSession()
       
    35     {
       
    36     __FLOG_OPEN(KMTPSubsystem, KComponent);
       
    37     __FLOG(_L8("CMTPServerSession - Entry"));
       
    38     __FLOG(_L8("CMTPServerSession - Exit"));
       
    39     }
       
    40     
       
    41 /**
       
    42 Destructor.
       
    43 */
       
    44 CMTPServerSession::~CMTPServerSession()
       
    45     {
       
    46     __FLOG(_L8("~CMTPServerSession - Entry"));
       
    47     static_cast<CMTPServer*>(const_cast<CServer2*>(CSession2::Server()))->DropSession();
       
    48     iSingletons.Close();
       
    49     __FLOG(_L8("~CMTPServerSession - Exit"));
       
    50     __FLOG_CLOSE;
       
    51     }
       
    52     
       
    53 void CMTPServerSession::CreateL()
       
    54     {
       
    55     __FLOG(_L8("CreateL - Entry"));
       
    56     iSingletons.OpenL();
       
    57     static_cast<CMTPServer*>(const_cast<CServer2*>(CSession2::Server()))->AddSession();
       
    58     __FLOG(_L8("CreateL - Exit"));
       
    59     }
       
    60 
       
    61 void CMTPServerSession::ServiceL(const RMessage2& aMessage)
       
    62     {
       
    63     __FLOG(_L8("ServiceL - Entry"));
       
    64     switch (aMessage.Function())
       
    65         {
       
    66     case EMTPClientStartTransport:
       
    67         __FLOG(_L8("StartTransport message received"));        
       
    68         DoStartTransportL(aMessage);
       
    69         break;
       
    70     case EMTPClientStopTransport:
       
    71         __FLOG(_L8("StopTransport message received"));
       
    72         DoStopTransport(aMessage);
       
    73         break;
       
    74      case EMTPClientIsAvailable :
       
    75         __FLOG(_L8("IsAvailable message received"));
       
    76         DoIsAvailableL(aMessage);
       
    77      
       
    78         break;
       
    79     default:
       
    80         __FLOG(_L8("Unrecognised message received"));
       
    81         break;        
       
    82         }
       
    83     __FLOG(_L8("ServiceL - Exit"));
       
    84     }
       
    85 TBool CMTPServerSession::CheckIsAvailableL(TUid aNewUID,TUid aCurUID)
       
    86 {
       
    87 
       
    88 	    TInt SwitchEnabled;
       
    89 	    iSingletons.FrameworkConfig().GetValueL(CMTPFrameworkConfig::ETransportSwitchEnabled, SwitchEnabled);	    
       
    90 	    if(!SwitchEnabled )
       
    91 		    {		    
       
    92 		    return EFalse;
       
    93 		    }
       
    94        TBuf<30> value;
       
    95        iSingletons.FrameworkConfig().GetValueL(CMTPFrameworkConfig::ETransportHighPriorityUID,value);	    	    
       
    96 	   TUint HighUID;	    
       
    97 	   TLex lex(value);	    
       
    98 	   TInt conErr = lex.Val(HighUID,EHex);
       
    99 	   if(aCurUID.iUid == HighUID)
       
   100 		    {
       
   101 		    return EFalse;	
       
   102 
       
   103 		    }
       
   104 	   else if(aNewUID.iUid ==HighUID)
       
   105 		    {
       
   106 	    	return ETrue;
       
   107 		    }
       
   108 	   return EFalse;	
       
   109 }
       
   110 /**
       
   111 Starts up the specified MTP transport protocol.
       
   112 @param aTransport The implementation UID of the transport protocol implemetation.
       
   113 @leave One of the system wide error codes, if a processing error occurs.
       
   114 */
       
   115 void CMTPServerSession::DoStartTransportL(const RMessage2& aMessage)
       
   116     {
       
   117     __FLOG(_L8("DoStartTransportL - Entry"));
       
   118     TUid newUID = TUid::Uid(aMessage.Int0()); 
       
   119     TUid curUID = iSingletons.ConnectionMgr().TransportUid();
       
   120     if(curUID !=(KNullUid))  // Another Transport is already running
       
   121 		{
       
   122     	if(!CheckIsAvailableL(newUID,curUID))
       
   123     		{
       
   124     		aMessage.Complete(KErrServerBusy);
       
   125     		iSingletons.ConnectionMgr().QueueTransportL( newUID, NULL );
       
   126     		return;
       
   127     		}
       
   128 	    iSingletons.ConnectionMgr().StopTransport(curUID);
       
   129     	}
       
   130     
       
   131     TUid secureid=aMessage.SecureId();    
       
   132     iSingletons.ConnectionMgr().SetClientSId(secureid);
       
   133     
       
   134     TInt length = aMessage.GetDesLength( 1 );
       
   135     
       
   136     if((!CheckIsBlueToothTransport(newUID) || (length!=0)) && (iSingletons.DpController().Count()==0))
       
   137     	{
       
   138     	iSingletons.DpController().LoadDataProvidersL();
       
   139     	iSingletons.Router().ConfigureL();
       
   140     	}
       
   141    
       
   142     if (length > 0)
       
   143     	{
       
   144     	HBufC8* paramHbuf = HBufC8::NewLC(length);
       
   145     	TPtr8 bufptr = paramHbuf->Des();
       
   146     	aMessage.ReadL( 1, bufptr, 0);
       
   147     	TRAPD(err, iSingletons.ConnectionMgr().StartTransportL( newUID, static_cast<TAny*>(paramHbuf) ));
       
   148     	if ( KErrArgument == err )
       
   149     		{
       
   150     		PanicClient( aMessage, EPanicErrArgument );
       
   151     		}
       
   152     	else if ( KErrNone == err )
       
   153     		{
       
   154     		aMessage.Complete(KErrNone);
       
   155     		}
       
   156     	else 
       
   157     		{
       
   158     		User::LeaveIfError( err );
       
   159     		}
       
   160     	CleanupStack::PopAndDestroy(paramHbuf);
       
   161     	}
       
   162     else
       
   163     	{
       
   164     	iSingletons.ConnectionMgr().StartTransportL(newUID, NULL);
       
   165     	aMessage.Complete(KErrNone);
       
   166     	}
       
   167     
       
   168     
       
   169     __FLOG(_L8("DoStartTransportL - Exit"));
       
   170     }  
       
   171 
       
   172 
       
   173 /**
       
   174 Shuts down the specified MTP transport protocol.
       
   175 @param aTransport The implementation UID of the transport protocol implemetation.
       
   176 */  
       
   177 void CMTPServerSession::DoStopTransport(const RMessage2& aMessage)
       
   178     {
       
   179     __FLOG(_L8("DoStopTransport - Entry"));
       
   180    iSingletons.ConnectionMgr().StopTransport( TUid::Uid( aMessage.Int0() ), ETrue );
       
   181     aMessage.Complete(KErrNone);
       
   182     __FLOG(_L8("DoStopTransport - Exit"));
       
   183     }
       
   184 
       
   185 /**
       
   186 Checks whether MTP Framework shall allow the StartTransport Command for given transport.
       
   187 @param aTransport The implementation UID of the transport protocol implementation.
       
   188 @leave One of the system wide error codes, if a processing error occurs.
       
   189 */  
       
   190 void CMTPServerSession::DoIsAvailableL(const RMessage2& aMessage)
       
   191     {
       
   192     __FLOG(_L8("DoStopTransport - Entry"));
       
   193    
       
   194    TUid newUID = TUid::Uid(aMessage.Int0()); 
       
   195    TUid curUID = iSingletons.ConnectionMgr().TransportUid();
       
   196    
       
   197    if(curUID !=(KNullUid))  // Another Transport is already running
       
   198 		{
       
   199 		if(curUID== newUID)
       
   200 			{
       
   201     		aMessage.Complete(KErrAlreadyExists); 	
       
   202     		return;				
       
   203 			}
       
   204     	else if(!CheckIsAvailableL(newUID,curUID))
       
   205     		{
       
   206     		aMessage.Complete(KErrServerBusy); 	
       
   207     		return;
       
   208     		}	    
       
   209     	}
       
   210 
       
   211     aMessage.Complete(KErrNone);
       
   212     __FLOG(_L8("DoStopTransport - Exit"));
       
   213     }
       
   214 
       
   215 TBool CMTPServerSession::CheckIsBlueToothTransport(TUid aNewUid)
       
   216 	{
       
   217 	TInt32 bluetoothUid = 0x10286FCB;
       
   218 	return aNewUid.iUid == bluetoothUid;
       
   219 	}