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// MmPluginUtils.cpp
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// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#include <mm/mmpluginutils.h>
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#include <mm/mmcleanup.h>
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//
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// MmPluginUtils
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//
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/**
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Find a plugin with the requested interfaceUid and whose match string matches
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the default data field. Where there are more than one plugin, choose that
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with highest version no.
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*/
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EXPORT_C TAny* MmPluginUtils::CreateImplementationL(TUid aInterfaceUid,
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TInt32 aKeyOffset,
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const TDesC8& aDefaultData,
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TUid aResolverUid)
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{
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RImplInfoPtrArray pluginArray;
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CleanupResetAndDestroyPushL(pluginArray);
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FindImplementationsL(aInterfaceUid, pluginArray, aDefaultData, aResolverUid);
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// Get higher version implementation
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TAny* higherversionplugin = GetHigherVersionImplementationKeyOffsetL(pluginArray,aKeyOffset);
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CleanupStack::PopAndDestroy(&pluginArray);
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return higherversionplugin;
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}
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/**
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Find a plugin with the requested interfaceUid and whose match string matches
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the default data field. Where there are more than one plugin, choose that
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with highest version no.
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*/
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EXPORT_C TAny* MmPluginUtils::CreateImplementationL(TUid aInterfaceUid,
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TInt32 aKeyOffset,
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const TDesC8& aDefaultData)
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{
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RImplInfoPtrArray pluginArray;
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CleanupResetAndDestroyPushL(pluginArray);
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FindImplementationsL(aInterfaceUid, pluginArray, aDefaultData);
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// Get higher version implementation
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TAny* higherversionplugin = GetHigherVersionImplementationKeyOffsetL(pluginArray,aKeyOffset);
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CleanupStack::PopAndDestroy(&pluginArray);
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return higherversionplugin;
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}
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/**
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Find a plugin with the requested interfaceUid and whose match string matches
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the default data field. Where there are more than one plugin, choose that
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with highest version no.
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*/
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EXPORT_C TAny* MmPluginUtils::CreateImplementationL(TUid aInterfaceUid,
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TInt32 aKeyOffset)
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{
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RImplInfoPtrArray pluginArray;
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CleanupResetAndDestroyPushL(pluginArray);
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FindImplementationsL(aInterfaceUid, pluginArray);
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// Get higher version implementation
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TAny* higherversionplugin = GetHigherVersionImplementationKeyOffsetL(pluginArray,aKeyOffset);
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CleanupStack::PopAndDestroy(&pluginArray);
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return higherversionplugin;
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}
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/**
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Get the higher version of plugin passing keyoffset
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*/
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TAny* MmPluginUtils::GetHigherVersionImplementationKeyOffsetL(RImplInfoPtrArray& pluginArray, TInt32 aKeyOffset)
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{
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TAny* self = NULL;
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if (pluginArray.Count() == 0)
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{
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User::Leave(KErrNotSupported);
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}
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else if (pluginArray.Count() == 1)
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{
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self = REComSession::CreateImplementationL(pluginArray[0]->ImplementationUid(), aKeyOffset);
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}
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else
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{
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// create each in turn, starting with the highest version, which is the start element
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for (TInt index = 0; index < pluginArray.Count(); index++)
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{
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TInt err=KErrNone;
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self = NULL;
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TRAP(err, self = REComSession::CreateImplementationL(pluginArray[index]->ImplementationUid(), aKeyOffset))
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if (err == KErrNone)
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{
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break;
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}
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if (err != KErrNotSupported)
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{
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User::Leave(err);
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}
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}
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if (!self)
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{
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User::Leave(KErrNotSupported);
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}
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}
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return self;
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}
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/*
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Similar but return destructor key via reference
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*/
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EXPORT_C TAny* MmPluginUtils::CreateImplementationL(TUid aInterfaceUid,
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TUid& aDestructorKey,
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const TDesC8& aDefaultData,
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TUid aResolverUid)
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{
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RImplInfoPtrArray pluginArray;
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CleanupResetAndDestroyPushL(pluginArray);
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FindImplementationsL(aInterfaceUid, pluginArray, aDefaultData, aResolverUid);
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// Get higher version implementation
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TAny* higherversionplugin = GetHigherVersionImplementationaDestructorKeyL(pluginArray, aDestructorKey);
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CleanupStack::PopAndDestroy(&pluginArray);
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return higherversionplugin;
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}
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/*
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Similar but return destructor key via reference
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*/
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EXPORT_C TAny* MmPluginUtils::CreateImplementationL(TUid aInterfaceUid,
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TUid& aDestructorKey,
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const TDesC8& aDefaultData)
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{
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RImplInfoPtrArray pluginArray;
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CleanupResetAndDestroyPushL(pluginArray);
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FindImplementationsL(aInterfaceUid, pluginArray, aDefaultData);
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// Get higher version implementation
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TAny* higherversionplugin = GetHigherVersionImplementationaDestructorKeyL(pluginArray, aDestructorKey);
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CleanupStack::PopAndDestroy(&pluginArray);
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return higherversionplugin;
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}
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/*
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Similar but return destructor key via reference
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*/
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EXPORT_C TAny* MmPluginUtils::CreateImplementationL(TUid aInterfaceUid,
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TUid& aDestructorKey)
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{
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RImplInfoPtrArray pluginArray;
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CleanupResetAndDestroyPushL(pluginArray);
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FindImplementationsL(aInterfaceUid, pluginArray);
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// Get higher version implementation
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TAny* higherversionplugin = GetHigherVersionImplementationaDestructorKeyL(pluginArray, aDestructorKey);
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CleanupStack::PopAndDestroy(&pluginArray);
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return higherversionplugin;
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}
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/**
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Get the higher version of plugin passing destructorkey
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*/
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TAny* MmPluginUtils::GetHigherVersionImplementationaDestructorKeyL(RImplInfoPtrArray& pluginArray, TUid& aDestructorKey)
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{
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TAny* self = NULL;
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if (pluginArray.Count() == 0)
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{
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User::Leave(KErrNotSupported);
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}
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else if (pluginArray.Count() == 1)
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{
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self = REComSession::CreateImplementationL(pluginArray[0]->ImplementationUid(), aDestructorKey);
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}
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else
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{
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// create each in turn, starting with the highest version, which is the start element
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for (TInt index = 0; index < pluginArray.Count(); index++)
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{
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TInt err = KErrNone;
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self = NULL;
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TRAP(err, self = REComSession::CreateImplementationL(pluginArray[index]->ImplementationUid(), aDestructorKey))
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if (err == KErrNone)
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{
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break;
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}
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if (err != KErrNotSupported)
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{
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User::Leave(err);
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}
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}
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if (!self)
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{
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User::Leave(KErrNotSupported);
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}
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}
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return self;
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}
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/*
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The function is an implementation of the templated TLinearOrder so it can order implementation information
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in an increasing version number.
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*/
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TInt VersionLinearOrderFunction(const CImplementationInformation& pluginA,
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const CImplementationInformation& pluginB)
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{
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if (pluginA.Version() == pluginB.Version())
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{
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return 0;
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}
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return (pluginA.Version() < pluginB.Version())? 1: -1;
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}
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EXPORT_C void MmPluginUtils::FindImplementationsL(TUid aInterfaceUid,
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RImplInfoPtrArray& aPluginArray)
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{
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REComSession::ListImplementationsL(aInterfaceUid, aPluginArray);
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CheckAndSortL(aPluginArray);
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}
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EXPORT_C void MmPluginUtils::FindImplementationsL(TUid aInterfaceUid,
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RImplInfoPtrArray& aPluginArray,
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const TDesC8& aDefaultData,
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TUid aResolverUid)
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{
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TEComResolverParams resolverParams;
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resolverParams.SetDataType(aDefaultData);
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FindImplementationsL(aInterfaceUid, aPluginArray, resolverParams, aResolverUid);
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}
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EXPORT_C void MmPluginUtils::FindImplementationsL(TUid aInterfaceUid,
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RImplInfoPtrArray& aPluginArray,
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const TDesC8& aDefaultData)
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{
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TEComResolverParams resolverParams;
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resolverParams.SetDataType(aDefaultData);
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FindImplementationsL(aInterfaceUid, aPluginArray, resolverParams);
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}
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void MmPluginUtils::FindImplementationsL(TUid aInterfaceUid,
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RImplInfoPtrArray& aPluginArray,
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TEComResolverParams& aResolverParams)
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{
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REComSession::ListImplementationsL(aInterfaceUid, aResolverParams, aPluginArray);
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CheckAndSortL(aPluginArray);
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}
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void MmPluginUtils::FindImplementationsL(TUid aInterfaceUid,
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RImplInfoPtrArray& aPluginArray,
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TEComResolverParams& aResolverParams,
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TUid aResolverUid)
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{
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REComSession::ListImplementationsL(aInterfaceUid, aResolverParams, aResolverUid, aPluginArray);
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CheckAndSortL(aPluginArray);
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}
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void MmPluginUtils::CheckAndSortL(RImplInfoPtrArray& aPluginArray)
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{
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// there must be at least one implementation
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if (aPluginArray.Count() > 0)
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{
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if (aPluginArray.Count() > 1)
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{
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aPluginArray.Sort(VersionLinearOrderFunction);
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}
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// if the highest version is zero there is no need to linger -- it should not be supported
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// and we will leave
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if (aPluginArray[0]->Version() == 0)
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{
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// plugins were found to be malformed, with 0 version numbers
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User::Leave(KErrNotSupported);
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}
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}
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|
307 |
}
|