persistentstorage/dbms/security/SC_PolicySpace.cpp
changeset 0 08ec8eefde2f
child 55 44f437012c90
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/persistentstorage/dbms/security/SC_PolicySpace.cpp	Fri Jan 22 11:06:30 2010 +0200
@@ -0,0 +1,211 @@
+// Copyright (c) 2004-2009 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:
+// CPolicySpace class
+// 
+//
+
+#include <s32file.h>
+#include "D32Strings.h"
+#include "D32Map.h"
+#include "SC_Policy.h"
+#include "SC_StrmIn.h"
+#include "SC_PassAllPolicy.h"
+#include "SC_DomainLoader.h"
+#include "SC_PolicySpace.h"
+
+namespace DBSC
+{
+
+/**
+*/
+inline CPolicySpace::CPolicySpace() :
+	iPDCollection(TLinearOrder< TPair<TInt, CPolicyDomain*> > (&Compare<TInt, CPolicyDomain*>))
+	{
+	}
+
+/**
+Standard phase-one CPolicySpace factory method
+@param aFs A reference to a file server session object
+@param aPrivatePath A reference to the DBMS server private directory.
+@return A pointer to just created CPolicySpace instance.
+@leave System-wide error codes, including KErrNoMemory
+*/
+CPolicySpace* CPolicySpace::NewL(RFs& aFs, const TDesC& aPrivatePath)
+	{
+	CPolicySpace* self = new (ELeave) CPolicySpace;
+	CleanupReleasePushL(*self);
+	self->ConstructL(aFs, aPrivatePath);
+	CleanupStack::Pop(self);
+	return self;
+	}
+
+/**
+Standard phase-two CPolicySpace construction method
+@param aFs A reference to a file server session object
+@param aPrivatePath A reference to the DBMS server private directory.
+@leave System-wide error codes, including KErrNoMemory
+*/
+void CPolicySpace::ConstructL(RFs& aFs, const TDesC& aPrivatePath)
+	{
+	iPassAllDbPolicy = new (ELeave) CPassAllPolicy(EPOTDatabase);
+	iPassAllTblPolicy = new (ELeave) CPassAllPolicy(EPOTTable);
+	TBuf<KMaxPath>* policyDir = new (ELeave) TFileName;
+	CleanupStack::PushL(policyDir);
+	policyDir->Copy(aPrivatePath);
+	policyDir->Append(KSecurityPolicyDir);
+	TRAPD(err, LoadPolicyDomainsL(aFs, *policyDir));
+	if(err != KErrNone && err != KErrNotFound) //it's not an error, if there are no policy files
+		{
+		__LEAVE(err);
+		}
+	CleanupStack::PopAndDestroy(policyDir);
+	}
+
+/**
+The method creates a policy domain object for each binary policy file found in the system.
+The created objects will be added to iPDCollection collection of policy domain objects.
+@param aFs A reference to a file server session object
+@param aPrivatePath A reference to the DBMS server private directory.
+@leave System-wide error codes, including KErrNoMemory
+*/
+void CPolicySpace::LoadPolicyDomainsL(RFs& aFs, const TDesC& aPolicyDir)
+	{
+	CPolicyDomainLoader* loader = CPolicyDomainLoader::NewLC(aFs, aPolicyDir, iPDCollection);
+	loader->RunL();
+	CleanupStack::PopAndDestroy(loader);
+	}
+
+/**
+The method returns the related with aDomainUid parameter CPolicyDomain object.
+@param aDomainUid Domain UID
+@return A pointer to the related with aDomainUid parameter CPolicyDomain object.
+*/
+CPolicyDomain* CPolicySpace::PolicyDomain(TUid aDomainUid) const
+	{
+	__ASSERT(aDomainUid != KNullUid);
+	CPolicyDomain* domain = NULL;
+	if(iPDCollection.Find(aDomainUid.iUid, domain) == KErrNone)
+		{
+		__ASSERT(domain);
+		__ASSERT(domain->Uid() == aDomainUid);
+		}
+	return domain;
+	}
+
+/**
+*/
+CPolicySpace::~CPolicySpace()
+	{
+	TMapIterator<TInt, CPolicyDomain*> it(iPDCollection);
+	TPair<TInt, CPolicyDomain*> pair;
+	while(it.Next(pair))
+		{
+		delete pair.iData;
+		}
+	iPDCollection.Close();
+	delete iPassAllTblPolicy;
+	delete iPassAllDbPolicy;
+	}
+
+/**
+Implements MPolicySpace::Release().
+Use this method when want to destroy particular CPolicySpace object.
+*/
+void CPolicySpace::Release()
+	{
+	delete this;
+	}
+
+/**
+Implements MPolicySpace::DbPolicyL().
+@param aDbPolicyRequest Request params: request type (secure/non-secure) and domain UID
+@return A const pointer to the related with the request UID policy object.
+*/
+const MPolicy* CPolicySpace::DbPolicyL(const TDbPolicyRequest& aDbPolicyRequest) const
+	{
+	const MPolicy* policy = NULL;
+	if(aDbPolicyRequest.iAccessType == EATNonSecure)
+		{
+		policy = iPassAllDbPolicy;
+		}
+	else//Secure shared database access
+		{
+		__ASSERT(aDbPolicyRequest.iUid != KNullUid);
+		CPolicyDomain* domain = PolicyDomain(aDbPolicyRequest.iUid);
+		if(domain)
+			{
+			policy = domain->DbPolicy();
+			}
+		}
+	if(aDbPolicyRequest.iAccessType == EATSecure && !policy)
+		{//there is no security policy associated with the supplied uid.
+		__LEAVE(KErrArgument);
+		}
+	__ASSERT(policy);
+	return policy;
+	}
+
+/**
+Implements MPolicySpace::TblPolicyL().
+@param aDbPolicyRequest Request params: request type (secure/non-secure) and domain UID
+@param aTblName Database table name
+@return A const pointer to the related with the request table policy object.
+*/
+const MPolicy* CPolicySpace::TblPolicyL(const TDbPolicyRequest& aDbPolicyRequest, 
+										const TDesC& aTblName) const
+	{
+	const MPolicy* policy = NULL;
+	if(aDbPolicyRequest.iAccessType == EATNonSecure)
+		{
+		policy = iPassAllTblPolicy;
+		}
+	else//Secure shared database access
+		{
+		CPolicyDomain* domain = PolicyDomain(aDbPolicyRequest.iUid);
+		if(domain)
+			{
+			policy = domain->TblPolicy(aTblName);
+			if(!policy)
+				{
+				policy = domain->DbPolicy();
+				}
+			}
+		}
+	if(aDbPolicyRequest.iAccessType == EATSecure && !policy)
+		{//there is no security policy associated with the supplied uid.
+		__LEAVE(KErrArgument);
+		}
+	__ASSERT(policy);
+	return policy;
+	}
+
+/**
+Implements MPolicySpace::BackupSIDL().
+Returns backup&restore SID for the databases, the access to which is controlled by the
+security policy, identified by aDbUid parameter.
+@param aDbUid Domain UID
+@return Backup&restore SID for the supplied domain UID
+@leave KErrArgument if there is no security policy domain for the supplied UID.
+*/
+TSecureId CPolicySpace::BackupSIDL(TUid aDbUid) const
+	{
+	CPolicyDomain* domain = PolicyDomain(aDbUid);
+	if(!domain)
+		{
+		__LEAVE(KErrArgument);
+		}
+	return domain->BackupSID();
+	}
+	
+} //end of - namespace DBSC