sl@0: /*
sl@0: * Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of the License "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description: 
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: #include <e32debug.h>
sl@0: #include <ecom/ecom.h>
sl@0: 
sl@0: #include "resolver.h"
sl@0: #include <caf/agentfactory.h>
sl@0: #include <caf/agentinterface.h>
sl@0: #include "agentinfo.h"
sl@0: #include <caf/agent.h>
sl@0: #include <caf/cafpanic.h>
sl@0: #include <caf/caferr.h>
sl@0: #include <caf/patchdata.h>
sl@0: 
sl@0: 
sl@0: using namespace ContentAccess;
sl@0: 
sl@0: // Constants for the F32 agent
sl@0: _LIT(KF32Agent,"F32 CA Agent");
sl@0: 
sl@0: 
sl@0: _LIT(KParentDir, "..\\");
sl@0: _LIT(KPrivateDir, "\\private\\");
sl@0: const TInt KPrivateDirLength = 9;   // "\\private\\"
sl@0: const TInt KPrivateDirAndDriveLength = 11;   // "x:\\private\\"
sl@0: const TInt KPrivateDirOffset = 2; // "x:\\"
sl@0: 
sl@0: 
sl@0: EXPORT_C CAgentResolver* CAgentResolver::NewLC(const TBool aDynamicAgentUpdate)
sl@0: 	{
sl@0: 	CAgentResolver* self = new (ELeave) CAgentResolver(aDynamicAgentUpdate);
sl@0: 	CleanupStack::PushL(self);
sl@0: 	self->ConstructL();
sl@0: 	return self;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C CAgentResolver* CAgentResolver::NewL(const TBool aDynamicAgentUpdate)
sl@0: 	{
sl@0: 	CAgentResolver* self = CAgentResolver::NewLC(aDynamicAgentUpdate);
sl@0: 	CleanupStack::Pop(self);
sl@0: 	return self;
sl@0: 	}
sl@0: 
sl@0: CAgentResolver::CAgentResolver(const TBool aDynamicAgentUpdate) : CActive(EPriorityStandard), iDynamicAgentUpdate(aDynamicAgentUpdate)
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: CAgentResolver::~CAgentResolver()
sl@0: 	{
sl@0: 	// remove ourselves from the ActiveScheduler
sl@0: 	if(IsAdded())
sl@0: 		{
sl@0: 		Deque();
sl@0: 		}
sl@0: 	
sl@0: 	// Unload all the agents
sl@0: 	DestroyListOfAgents();
sl@0: 	
sl@0: 	// Close our ECOM session
sl@0: 	if(iEcomSession)
sl@0: 		{
sl@0: 		if(iDynamicAgentUpdate)
sl@0: 			{
sl@0: 			iEcomSession->CancelNotifyOnChange(iStatus);
sl@0: 			}
sl@0: 		iEcomSession->Close();
sl@0: 		REComSession::FinalClose();
sl@0: 		}
sl@0: 
sl@0: 	iSupplierMimeTypes.Close();
sl@0: 	iConsumerMimeTypes.Close();
sl@0: 	iAgentInfos.Close();
sl@0: 	}
sl@0: 
sl@0: void CAgentResolver::ConstructL()
sl@0: 	{
sl@0: 	if(iDynamicAgentUpdate)
sl@0: 		{
sl@0: 		// Add ourselves to the current active scheduler so we can get dynamic 
sl@0: 		// updates when agents are removed or new agents are added
sl@0: 		CActiveScheduler::Add(this);
sl@0: 		}
sl@0: 
sl@0: 	iEcomSession = &REComSession::OpenL();
sl@0: 	
sl@0: 	// find all the agents
sl@0: 	BuildListOfAgentsL();
sl@0: 
sl@0: 	if(iDynamicAgentUpdate)
sl@0: 		{
sl@0: 		// register for ECOM update notifications in case a new agent appears
sl@0: 		SetActive();
sl@0: 		iEcomSession->NotifyOnChange(iStatus);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void CAgentResolver::BuildListOfAgentsL()
sl@0: 	{
sl@0: 	TInt err = KErrNone;
sl@0: 
sl@0: 	// Get all plugins which implement the agent interface
sl@0: 	RImplInfoPtrArray implArray;
sl@0: 	CleanupStack::PushL(TCleanupItem(CleanImplArray, &implArray));
sl@0: 	REComSession::ListImplementationsL(KCAAgentInterfaceUid, implArray);
sl@0: 
sl@0: 	for (TInt i = 0; i < implArray.Count(); ++i)
sl@0: 		{
sl@0: #ifdef __EPOC32__
sl@0: 		// On hardware - to load agents from sources other than ROM the patch 
sl@0: 		// data KCafLoadPostProductionAgents must be set to True (non-zero).
sl@0: 		// Default SymbianOS behavior is to only load agents from ROM
sl@0: 		if ((KCafLoadPostProductionAgents == 0) &&
sl@0:             !implArray[i]->RomBased())
sl@0: 			{
sl@0: 			// If the agent is not in ROM, don't load it because it might
sl@0: 			// be a security risk.
sl@0: 			continue;
sl@0: 			}
sl@0: #endif
sl@0: 
sl@0: 		// Construct all the agent infos from these implementations
sl@0: 		TRAP(err, AddAgentL(*implArray[i]));
sl@0: 
sl@0: 		// If we ran out of memory proagate the leave to the caller
sl@0: 		// otherwise don't let a dodgy agent affect the construction of the other
sl@0: 		// agents
sl@0: 		if(err == KErrNoMemory)
sl@0: 			{
sl@0: 			User::Leave(KErrNoMemory);
sl@0: 			}
sl@0: 		}
sl@0: 	CleanupStack::PopAndDestroy(&implArray);  
sl@0: 
sl@0: 
sl@0: 	if (!iDefaultAgent)
sl@0: 		{
sl@0: 		// If we didn't find a default agent, we have a big problem so panic
sl@0: 		User::Panic(KCafPanicString, ECafPanicNoF32Agent);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void CAgentResolver::AddAgentL(const CImplementationInformation& aImplInfo)
sl@0: 	{
sl@0: 	// Create a CAgentInfo instance
sl@0: 	CAgentInfo* agentInfo = CAgentInfo::NewLC(aImplInfo);
sl@0: 
sl@0: 
sl@0: 	if(IsF32Agent(*agentInfo))
sl@0: 		{
sl@0: 		// It's the F32 Agent
sl@0: 		if(iDefaultAgent)
sl@0: 			{
sl@0: 			// If we already have a default agent something is seriously wrong
sl@0: 			User::Panic(KCafPanicString, ECafPanicDuplicateF32Agent);
sl@0: 			}
sl@0: 
sl@0: 		// Note that the default agent is NOT stored in the agents list, it is a special case
sl@0: 		iDefaultAgent = agentInfo;
sl@0: 		CleanupStack::Pop(agentInfo);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		// All other agents go in the agent list
sl@0: 		User::LeaveIfError(iAgentInfos.Append(agentInfo));
sl@0: 		CleanupStack::Pop(agentInfo);
sl@0: 
sl@0: 		TInt mimeIndex=0;
sl@0: 
sl@0: 		// Update our list of all supplier mime types supported by CAF
sl@0: 		for(mimeIndex=0;mimeIndex < agentInfo->SupplierMimeTypes().Count(); mimeIndex++) 
sl@0: 			{
sl@0: 			User::LeaveIfError(iSupplierMimeTypes.Append(*agentInfo->SupplierMimeTypes()[mimeIndex]));
sl@0: 			}
sl@0: 
sl@0: 		// Update our list of all consumer mime types supported by CAF
sl@0: 		for(mimeIndex=0;mimeIndex < agentInfo->ConsumerMimeTypes().Count(); mimeIndex++) 
sl@0: 			{
sl@0: 			User::LeaveIfError(iConsumerMimeTypes.Append(*agentInfo->ConsumerMimeTypes()[mimeIndex]));
sl@0: 			}
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void CAgentResolver::DestroyListOfAgents()
sl@0: 	{
sl@0: 	iSupplierMimeTypes.Reset();
sl@0: 	iConsumerMimeTypes.Reset();
sl@0: 
sl@0: 	// cant forget to delete the default agent
sl@0: 	delete iDefaultAgent;
sl@0: 	iDefaultAgent = NULL;
sl@0: 
sl@0: 	// Free memory assocated with the iAgentInfos array 
sl@0: 	iAgentInfos.ResetAndDestroy();
sl@0: 	}
sl@0: 
sl@0: void CAgentResolver::DoCancel()
sl@0: 	{
sl@0: 	// Abort any update notification 
sl@0: 	iEcomSession->CancelNotifyOnChange(iStatus);
sl@0: 	}
sl@0: 
sl@0: void CAgentResolver::RunL()
sl@0: 	{
sl@0: 	// Called by the ECOM framework if a new agent appears
sl@0: 
sl@0: 	// remove the existing list of agents and build a new one
sl@0: 	DestroyListOfAgents();
sl@0: 	BuildListOfAgentsL();
sl@0: 
sl@0: 	// request notification of any further changes
sl@0: 	iEcomSession->NotifyOnChange(iStatus);
sl@0: 	SetActive();
sl@0: 	}	
sl@0: 
sl@0: TBool CAgentResolver::IsF32Agent(CAgentInfo& aAgentInfo)
sl@0: 	{
sl@0: 	// Check if the agent has no consumer or supplier mime types
sl@0: 	// and that it has the correct name and Uid
sl@0: 	if (aAgentInfo.Agent().ImplementationUid() == KF32AgentImplUid
sl@0: 		&& aAgentInfo.Agent().Name().Compare(KF32Agent()) == 0 
sl@0: 		&& aAgentInfo.ConsumerMimeTypes().Count() == 0 
sl@0: 		&& aAgentInfo.SupplierMimeTypes().Count() == 0)
sl@0: 		{
sl@0: 		return ETrue;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		return EFalse;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: CAgentInfo& CAgentResolver::ResolveSupplierMimeL(const TDesC8& aMimeType) const
sl@0: 	{
sl@0: 	// Go through all the agents and return the one which supports the
sl@0: 	// required supplier mime type
sl@0: 	CAgentInfo* retVal=NULL;
sl@0: 
sl@0: 	for (TInt i = 0; i < iAgentInfos.Count(); ++i)
sl@0: 		{
sl@0: 		if (iAgentInfos[i]->IsSupportedSupplier(aMimeType))
sl@0: 			{
sl@0: 			retVal = iAgentInfos[i];
sl@0: 			break;
sl@0: 			}
sl@0: 		}
sl@0: 	
sl@0: 	if (!retVal)
sl@0: 		{
sl@0: 		User::Leave(KErrCANoAgent);
sl@0: 		}
sl@0: 	return *retVal;
sl@0: 	}
sl@0: 
sl@0: CAgentInfo& CAgentResolver::ResolveConsumerMime(const TDesC8& aMimeType) const
sl@0: 	{
sl@0: 	// By default, set the return value to be the default agent. If we find
sl@0: 	// anything better, then we change it
sl@0: 	CAgentInfo* retVal = iDefaultAgent;
sl@0: 
sl@0: 	for (TInt i = 0; i < iAgentInfos.Count(); ++i)
sl@0: 		{
sl@0: 		if (iAgentInfos[i]->IsSupportedConsumer(aMimeType))
sl@0: 			{
sl@0: 			retVal = iAgentInfos[i];
sl@0: 			break;
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	ASSERT(retVal);
sl@0: 	return *retVal;
sl@0: 	}
sl@0: 
sl@0: CAgentInfo& CAgentResolver::ResolveFileL(const TDesC& aURI, TDes& aActualUri, TContentShareMode aShareMode) const
sl@0: 	{
sl@0: 	// Go through all the agents and return the one which supports the file at the given URI	
sl@0: 	TBool thePrivateDir = EFalse;	
sl@0: 	TUid agentUid = ResolveDirectory(aURI, aActualUri, thePrivateDir);
sl@0: 	
sl@0: 	if(agentUid != iDefaultAgent->Agent().ImplementationUid())
sl@0: 		{
sl@0: 		// this file must be living in a private server directory
sl@0: 		// return the agent who owns the directory
sl@0: 		return AgentInfoL(agentUid);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		TInt agentsCount(iAgentInfos.Count());
sl@0: 		CAgentManager* agentManager = NULL;
sl@0: 		for (TInt i = 0; i < agentsCount; ++i)
sl@0: 			{
sl@0: 			TRAPD(result, agentManager = &iAgentInfos[i]->AgentManagerL());
sl@0: 			if(result != KErrNone)
sl@0: 				{
sl@0: 				if(KErrNoMemory == result)
sl@0: 					{
sl@0: 					User::Leave(result);
sl@0: 					}
sl@0: 				else
sl@0: 					{
sl@0: 					continue;	
sl@0: 					}
sl@0: 				}
sl@0: 			if (agentManager->IsRecognizedL(aURI, aShareMode))
sl@0: 				{
sl@0: 				return *iAgentInfos[i];
sl@0: 				}
sl@0: 			}
sl@0: 		}
sl@0: 	return *iDefaultAgent;
sl@0: 	}
sl@0: 
sl@0: CAgentInfo& CAgentResolver::ResolveFileL(RFile& aFile) const
sl@0: 	{
sl@0: 	// Go through all the agents and return the one which supports the file
sl@0: 
sl@0: 	TInt agentsCount(iAgentInfos.Count());
sl@0: 	CAgentManager* agentManager = NULL;
sl@0: 	for (TInt i = 0; i < agentsCount; ++i)
sl@0: 		{
sl@0: 		TRAPD(result, agentManager = &iAgentInfos[i]->AgentManagerL());
sl@0: 		if(result != KErrNone)
sl@0: 			{
sl@0: 			if(KErrNoMemory == result)
sl@0: 				{
sl@0: 				User::Leave(result);
sl@0: 				}
sl@0: 			else
sl@0: 				{
sl@0: 				continue;	
sl@0: 				}
sl@0: 			}
sl@0: 		if (agentManager->IsRecognizedL(aFile))
sl@0: 			{
sl@0: 			return *iAgentInfos[i];
sl@0: 			}
sl@0: 		}
sl@0: 	return *iDefaultAgent;
sl@0: 	}
sl@0: 
sl@0: #ifdef SYMBIAN_ENABLE_SDP_WMDRM_SUPPORT
sl@0: 
sl@0: CAgentInfo& CAgentResolver::ResolveFileL(const TDesC8& aHeaderData)
sl@0: 	{
sl@0: 	// Go through all the agents and return the one which supports the given WMDRM content.
sl@0: 	
sl@0: 	TInt agentsCount(iAgentInfos.Count());
sl@0: 	CAgentManager* agentManager = NULL;
sl@0: 	
sl@0: 	for (TInt i = 0; i < agentsCount; ++i)
sl@0: 		{
sl@0: 		TRAPD(result, agentManager = &iAgentInfos[i]->AgentManagerL());
sl@0: 		if(result != KErrNone)
sl@0: 			{
sl@0: 			if(KErrNoMemory == result)
sl@0: 				{
sl@0: 				User::Leave(result);
sl@0: 				}
sl@0: 			else
sl@0: 				{
sl@0: 				continue;	
sl@0: 				}
sl@0: 			}
sl@0: 			
sl@0: 		if (agentManager->IsRecognizedL(aHeaderData))
sl@0: 			{
sl@0: 			return *iAgentInfos[i];
sl@0: 			}
sl@0: 		}
sl@0: 		
sl@0:     // will never reach here	
sl@0: 	return *iDefaultAgent;
sl@0: 	}
sl@0: 	
sl@0: 	
sl@0: EXPORT_C TBool CAgentResolver::DoRecognizeL(const TDesC8& aHeader, TDes8& aFileMimeType, TDes8& aContentMimeType)
sl@0: 	{
sl@0: 	// Go through all the agents and return the one which supports the given WMDRM content.
sl@0: 	TInt agentsCount(iAgentInfos.Count());
sl@0: 	CAgentManager* agentManager = NULL;
sl@0: 	for (TInt i = 0; i < agentsCount; ++i)
sl@0: 		{
sl@0: 		TRAPD(result, agentManager = &iAgentInfos[i]->AgentManagerL());
sl@0: 		if(result != KErrNone)
sl@0: 			{
sl@0: 			if(KErrNoMemory == result)
sl@0: 				{
sl@0: 				User::Leave(result);
sl@0: 				}
sl@0: 			else
sl@0: 				{
sl@0: 				continue;	
sl@0: 				}
sl@0: 			}
sl@0: 			
sl@0: 		if (agentManager->RecognizeContentL(aHeader, aFileMimeType, aContentMimeType))
sl@0: 			{
sl@0: 			// force to lower case to ensure that chosen lower case scheme for mime types is maintained
sl@0: 			aFileMimeType.LowerCase();
sl@0: 			aContentMimeType.LowerCase();			
sl@0: 			return ETrue;
sl@0: 			}
sl@0: 		}
sl@0: 		
sl@0: 	return EFalse;
sl@0: 	}
sl@0: 	
sl@0: #endif //#ifdef SYMBIAN_ENABLE_SDP_WMDRM_SUPPORT
sl@0: 	
sl@0: TUid CAgentResolver::ResolveDirectory(const TDesC& aPath, TDes& aActualPath, TBool& aThePrivateDir) const
sl@0: 	{
sl@0: 	TInt i = 0;
sl@0: 	TInt pathLength = 0;
sl@0: 	TBuf <KPrivateDirAndDriveLength> pathLowerCase;
sl@0: 	
sl@0: 	// Assume it's a publicly accessable path
sl@0: 	aThePrivateDir = EFalse;
sl@0: 	
sl@0: 	// Find the length of the path and private directory
sl@0: 	pathLength = aPath.Length();
sl@0: 
sl@0: 	// Check that the path is long enough to be within a private directory
sl@0: 	// and does not include "..\\".The  "..\\" sequence could be a security risk
sl@0: 	if(aPath.Find(KParentDir()) == KErrNotFound && pathLength >= KPrivateDirAndDriveLength)
sl@0: 		{
sl@0: 		// Create a lower case copy of the left hand side of the path
sl@0: 		TPtrC lowerCasePtr = aPath.Mid(KPrivateDirOffset, KPrivateDirLength);
sl@0: 		pathLowerCase.Copy(lowerCasePtr);
sl@0: 		pathLowerCase.LowerCase();
sl@0: 	
sl@0: 		// Compare the first directory in the path to \\private\\ 
sl@0: 		if(KPrivateDir() == pathLowerCase)
sl@0: 			{
sl@0: 			// It is a private directory of some sort
sl@0: 			if(pathLength > KPrivateDirAndDriveLength)
sl@0: 				{
sl@0: 				// It must be a server private directory data cage
sl@0: 				TPtrC serverDirectoryPath = aPath.Right(pathLength - KPrivateDirAndDriveLength);
sl@0: 				for(i = 0; i < AgentInfoCount(); i++)
sl@0: 					{
sl@0: 					// See if the part after \\private\\ matches the agent name
sl@0: 					TPtrC privateDirectoryName = AgentInfo(i).PrivateDirectoryName();
sl@0: 					TPtrC agentName = AgentInfo(i).Agent().Name();
sl@0: 					if(privateDirectoryName.Length() && agentName.Length() && agentName == serverDirectoryPath.Left(agentName.Length()))
sl@0: 						{
sl@0: 						// It must be this agent's private directory
sl@0: 						// Convert \\private\\agentName\\... to \\private\\SID\\...
sl@0: 						aActualPath.Copy(aPath.Left(KPrivateDirAndDriveLength));
sl@0: 						aActualPath.Append(privateDirectoryName);
sl@0: 						aActualPath.Append(aPath.Right(pathLength - KPrivateDirAndDriveLength - agentName.Length()));
sl@0: 						return AgentInfo(i).Agent().ImplementationUid();
sl@0: 						}
sl@0: 					}
sl@0: 				}
sl@0: 			else
sl@0: 				{
sl@0: 				// It's just the c:\\private\\ directory
sl@0: 				// Use the default agent, any calls will just fail
sl@0: 				aThePrivateDir = ETrue;
sl@0: 				}
sl@0: 			}
sl@0: 		}
sl@0: 	
sl@0: 	// Not an agent private directory so just return the default agent
sl@0: 	aActualPath.Copy(aPath);
sl@0: 	return iDefaultAgent->Agent().ImplementationUid();
sl@0: 	}
sl@0: 
sl@0: HBufC* CAgentResolver::ConvertAgentFileNameL(const TDesC& aFileName) const
sl@0: 	{
sl@0: 	TInt i = 0;
sl@0: 	TInt fileNameLength = 0;
sl@0: 	TBuf <KPrivateDirAndDriveLength> pathLowerCase;
sl@0: 	
sl@0: 	fileNameLength = aFileName.Length();
sl@0: 	
sl@0: 	// If the path is shorter than the x:\\private\\ it must be a F32 file
sl@0: 	if(fileNameLength  > KPrivateDirAndDriveLength)
sl@0: 		{
sl@0: 		// Create a lower case copy of the left hand side of the path
sl@0: 		TPtrC lowerCasePtr = aFileName.Mid(KPrivateDirOffset, KPrivateDirLength);
sl@0: 		pathLowerCase.Copy(lowerCasePtr);
sl@0: 		pathLowerCase.LowerCase();
sl@0: 	
sl@0: 		// Compare the first directory in the path to \\private\\ 
sl@0: 		if(KPrivateDir() == pathLowerCase)
sl@0: 			{
sl@0: 			// It is a private directory of some sort
sl@0: 			if(fileNameLength > KPrivateDirAndDriveLength)
sl@0: 				{
sl@0: 				// It must be a server private directory data cage
sl@0: 				TPtrC serverDirectoryPath = aFileName.Right(fileNameLength - KPrivateDirAndDriveLength);
sl@0: 				for(i = 0; i < AgentInfoCount(); i++)
sl@0: 					{
sl@0: 					// See if the part after \\private\\ matches the agent name
sl@0: 					TPtrC privateDirectoryName = AgentInfo(i).PrivateDirectoryName();
sl@0: 					TPtrC agentName = AgentInfo(i).Agent().Name();
sl@0: 					if(privateDirectoryName.Length() && agentName.Length() && privateDirectoryName == serverDirectoryPath.Left(privateDirectoryName.Length()))
sl@0: 						{
sl@0: 						// It is this agent's private directory
sl@0: 						// Convert \\private\\SID\\... \\private\\agentName\\... 
sl@0: 						HBufC* buffer = HBufC::NewL(fileNameLength - privateDirectoryName.Length() + agentName.Length());
sl@0: 						TPtr ptr = buffer->Des();
sl@0: 						ptr.Copy(aFileName.Left(KPrivateDirAndDriveLength));
sl@0: 						ptr.Append(agentName);
sl@0: 						ptr.Append(aFileName.Right(fileNameLength - KPrivateDirAndDriveLength - privateDirectoryName.Length()));
sl@0: 						return buffer;
sl@0: 						}
sl@0: 					}
sl@0: 				}
sl@0: 			}
sl@0: 		}
sl@0: 	return aFileName.AllocL();
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TBool CAgentResolver::DoRecognizeL(const TDesC& aName, const TDesC8& aBuffer, TDes8& aFileMimeType, TDes8& aContentMimeType)
sl@0: 	{
sl@0: 
sl@0: 	// Given the filename and buffer from apparc, ask the agents in turn if they recognize the file
sl@0: 	// Note this will not call the DefaultAgent (F32) because it won't be able to recognize anything
sl@0: 
sl@0: 	TInt agentsCount(iAgentInfos.Count());
sl@0: 	CAgentManager* agentManager = NULL;
sl@0: 	for (TInt i = 0; i < agentsCount; ++i)
sl@0: 		{
sl@0: 		TRAPD(result, agentManager = &iAgentInfos[i]->AgentManagerL());
sl@0: 		if(result != KErrNone)
sl@0: 			{
sl@0: 			if(KErrNoMemory == result)
sl@0: 				{
sl@0: 				User::Leave(result);
sl@0: 				}
sl@0: 			else
sl@0: 				{
sl@0: 				continue;	
sl@0: 				}
sl@0: 			}
sl@0: 		if (agentManager->RecognizeFileL(aName, aBuffer, aFileMimeType, aContentMimeType))
sl@0: 			{
sl@0: 			// force to lower case to ensure that chosen lower case scheme for mime types is maintained
sl@0: 			aFileMimeType.LowerCase();
sl@0: 			aContentMimeType.LowerCase();			
sl@0: 			return ETrue;
sl@0: 			}
sl@0: 		}
sl@0: 	return EFalse;
sl@0: 	}
sl@0: 	
sl@0: 
sl@0: void CAgentResolver::CleanImplArray(TAny* aArray)
sl@0: 	{
sl@0: 	static_cast<RImplInfoPtrArray*>(aArray)->ResetAndDestroy();
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt CAgentResolver::PreferredBufferSize()
sl@0: 	{
sl@0: 	TInt size=0;
sl@0: 
sl@0: 	if(iDefaultAgent != NULL)
sl@0: 		{
sl@0: 		size = iDefaultAgent->PreferredBufferSize();
sl@0: 		}
sl@0: 
sl@0: 	// Find out the maximum buffer requested by any agent
sl@0: 	for (TInt i = 0; i < iAgentInfos.Count(); ++i)
sl@0: 			{
sl@0: 			if(iAgentInfos[i]->PreferredBufferSize() > size)
sl@0: 				{
sl@0: 				size = iAgentInfos[i]->PreferredBufferSize();
sl@0: 				}
sl@0: 			}
sl@0: 	return size;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: EXPORT_C const RArray<TPtrC8>& CAgentResolver::ConsumerMimeTypes() const
sl@0: 	{
sl@0: 	return iConsumerMimeTypes;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: EXPORT_C const RArray<TPtrC8>& CAgentResolver::SupplierMimeTypes() const
sl@0: 	{
sl@0: 	return iSupplierMimeTypes;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: CAgentInfo& CAgentResolver::AgentInfoL(const TDesC& aAgentName) const
sl@0: 	{
sl@0: 	TBool found = EFalse;
sl@0: 	TInt i = 0;
sl@0: 	for(i = 0; i < iAgentInfos.Count(); i++)
sl@0: 		{
sl@0: 		if(iAgentInfos[i]->Agent().Name() == aAgentName)
sl@0: 			{
sl@0: 			found = ETrue;
sl@0: 			break;
sl@0: 			}
sl@0: 		}
sl@0: 	
sl@0: 	if(!found)
sl@0: 		{
sl@0: 		// Can't find the agent so leave
sl@0: 		User::Leave(KErrNotFound);
sl@0: 		}
sl@0: 	
sl@0: 	return *iAgentInfos[i];
sl@0: 	}
sl@0: 
sl@0: CAgentInfo& CAgentResolver::AgentInfoL(const TUid& aUid) const
sl@0: 	{
sl@0: 	TInt i = 0;
sl@0: 	TBool found = EFalse;
sl@0: 	
sl@0: 	// See if it's the F32 agent
sl@0: 	if(aUid == DefaultAgentUid())
sl@0: 		{
sl@0: 		return *iDefaultAgent;
sl@0: 		}
sl@0: 	
sl@0: 	for(i = 0; i < iAgentInfos.Count(); i++)
sl@0: 		{
sl@0: 		if(iAgentInfos[i]->Agent().ImplementationUid() == aUid)
sl@0: 			{
sl@0: 			found = ETrue;
sl@0: 			break;			
sl@0: 			}
sl@0: 		}
sl@0: 	
sl@0: 	if(!found)
sl@0: 		{
sl@0: 		// couldn't find the agent so leave
sl@0: 		User::Leave(KErrNotFound);
sl@0: 		}
sl@0: 	
sl@0: 	return *iAgentInfos[i];
sl@0: 	}
sl@0: 
sl@0: CAgentInfo& CAgentResolver::AgentInfo(TInt aIndex) const
sl@0: 		{
sl@0: 		return *iAgentInfos[aIndex];		
sl@0: 		}
sl@0: 
sl@0: TInt CAgentResolver::AgentInfoCount() const
sl@0: 	{
sl@0: 	return iAgentInfos.Count();	
sl@0: 	}
sl@0: 
sl@0: TUid CAgentResolver::DefaultAgentUid() const
sl@0: 	{
sl@0: 	return iDefaultAgent->Agent().ImplementationUid();
sl@0: 	}