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// Copyright (c) 2004-2009 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 the License "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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// \e32\kernel\ssecure.cpp
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//
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//
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#define __INCLUDE_CAPABILITY_NAMES__
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#define __INCLUDE_ALL_SUPPORTED_CAPABILITIES__
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#include <kernel/kern_priv.h>
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#include "execs.h"
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#include <e32cmn.h>
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#include <e32cmn_private.h>
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#ifndef __REMOVE_PLATSEC_DIAGNOSTICS__
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class DiagnosticMessage : private TBuf8<1024>
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{
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public:
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void Append(char aChar)
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{
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if((TUint)Length()<(TUint)iMaxLength)
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TDes8::Append((TChar)aChar);
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}
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void Append(const TUint8* aString,TInt aLength)
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{
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TInt len=iMaxLength-Length();
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if(len>aLength)
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len=aLength;
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TDes8::Append(aString, len);
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}
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void Append(const TDesC8& aString)
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{
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Append(aString.Ptr(), aString.Length());
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}
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void Append(const char* aString)
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{
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const char* end = aString;
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while(*end) ++end;
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Append((const TUint8*)aString, end-aString);
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}
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void AppendKU(const TUint8* aString,TInt aLength,TBool aCalledFromKernel)
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{
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if(aCalledFromKernel)
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{
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Append(aString,aLength);
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return;
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}
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TUint8* dPtr=iBuf;
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TInt dLen=Length();
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dPtr += dLen;
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TInt len = iMaxLength-dLen;
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if(len>aLength)
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len = aLength;
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SetLength(dLen+len);
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kumemget(dPtr,aString,len);
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}
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void AppendKU(const TDesC8& aSrc,TBool aCalledFromKernel)
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{
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if(aCalledFromKernel)
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{
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Append(aSrc);
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return;
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}
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TInt sLen,sMax;
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const TUint8* sPtr=Kern::KUDesInfo(aSrc, sLen, sMax);
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AppendKU(sPtr,sLen,aCalledFromKernel);
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}
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void AppendCapability(TCapability aCapability)
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{
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if (aCapability >= 0 && aCapability < ECapability_Limit)
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Append(CapabilityNames[aCapability]);
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else if (aCapability == ECapability_Denied)
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Append("(Denied)");
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else
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Append("(Unknown)");
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}
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void AppendCapabilities(const SCapabilitySet& aCaps)
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{
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for(TInt i=0; i<ECapability_Limit; i++)
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{
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if(aCaps[i>>5] & (1<<(i&31)))
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{
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Append(CapabilityNames[i]);
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Append(" ");
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}
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}
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}
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void AppendObject(DObject* aObject)
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{
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DServer* server = NULL;
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TObjectType type=(TObjectType)(aObject->iContainerID-1);
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if (type==ESession)
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{
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Append("A session on ");
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server = ((DSession*)aObject)->iServer;
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if (server!=NULL)
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{
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if (server->Open()==KErrNone)
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{
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type=EServer;
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aObject = server;
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}
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else
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server = NULL;
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}
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if (server==NULL)
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{
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Append("unknown server");
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return;
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}
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}
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TFullName name;
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if(!NKern::HeldFastMutex())
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aObject->AppendFullName(name);
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else
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aObject->TraceAppendFullName(name,ETrue);
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const char* typeName;
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switch(type)
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{
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case EThread: typeName="Thread "; break;
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case EProcess: typeName="Process "; break;
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case EServer: typeName="Server "; break;
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default: typeName="";
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}
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Append(typeName);
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Append(name);
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if (server)
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server->Close(NULL);
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}
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void AppendObject(TInt aHandle)
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{
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DObject* pO=NULL;
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TInt r=K::OpenObjectFromHandle(aHandle,pO); // Puts us in critical section if successful
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if (r!=KErrNone)
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K::PanicKernExec(EBadHandle);
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AppendObject(pO);
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pO->Close(NULL);
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NKern::ThreadLeaveCS();
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}
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void AppendHex(TUint aVal)
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{
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for(TInt e=8; e>0; --e)
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{
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TUint d=(aVal>>28);
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aVal <<= 4;
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if(d>9)
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d += 'a'-'9'-1;
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d += '0';
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Append((char)d);
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}
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}
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void AppendMessage(TInt aHandle)
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{
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NKern::LockSystem();
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RMessageK* pM = RMessageK::MessageK(aHandle);
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DThread* pT = pM->iClient;
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pT->Open();
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DServer* pS = pM->iSession->iServer;
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pS->Open();
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TInt fn=pM->iFunction;
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NKern::ThreadEnterCS();
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NKern::UnlockSystem();
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Append("A Message (function number=0x");
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AppendHex(fn);
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Append(") from ");
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AppendObject(pT);
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Append(", sent to ");
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AppendObject(pS);
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Append(",");
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pS->Close(NULL);
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pT->Close(NULL);
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NKern::ThreadLeaveCS();
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}
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void AppendMessageK(RMessageK* aMsg)
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{
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// Enter and leave with System Lock held
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DThread* pT = aMsg->iClient;
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DServer* pS = aMsg->iSession->iServer;
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TInt fn=aMsg->iFunction;
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Append("A Message (function number=0x");
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AppendHex(fn);
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Append(") from ");
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AppendObject(pT);
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Append(", sent to ");
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AppendObject(pS);
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Append(",");
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}
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void AppendFailed()
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{
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if(TheSuperPage().KernelConfigFlags() & EKernelConfigPlatSecEnforcement)
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Append("failed - ");
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else
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Append("would have failed - ");
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}
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void AppendCapabilityCheck()
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{
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Append("Capability check ");
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AppendFailed();
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}
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void AppendProcessIsolationCheck()
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{
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Append("Process Isolation check ");
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AppendFailed();
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}
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void AppendPolicyCheck(const TPlatSecDiagnostic& aDiagnostic)
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{
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if(aDiagnostic.iSecurityInfo.iSecureId|aDiagnostic.iSecurityInfo.iVendorId)
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{
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Append("Security Policy Check ");
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AppendFailed();
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}
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else
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AppendCapabilityCheck();
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}
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void AppendSecureIdCheck()
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{
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Append("Secure Id Check ");
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AppendFailed();
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}
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void Emit()
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{
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K::TextTrace(*this,EPlatSecTrace);
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Zero();
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}
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};
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void DoEmitDiagnostic(TPlatSecDiagnostic& aDiagnostic,TBool aCalledFromKernel)
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{
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DiagnosticMessage message;
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message.Append("*PlatSec* ");
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TUint32 flags = TheSuperPage().KernelConfigFlags();
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if(flags&EKernelConfigPlatSecEnforcement)
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message.Append("ERROR - ");
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else
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message.Append("WARNING - ");
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switch(aDiagnostic.iType)
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{
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case TPlatSecDiagnostic::ELoaderCapabilityViolation1:
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message.AppendCapabilityCheck();
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if(aDiagnostic.iArg1)
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message.AppendObject(aDiagnostic.iArg1);
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else
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message.Append("<global>, EKern or EFile");
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message.Append(" can't load ");
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message.AppendKU(*aDiagnostic.String2(),aCalledFromKernel);
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message.Append(" because the following capabilities are missing: ");
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message.AppendCapabilities(aDiagnostic.iSecurityInfo.iCaps);
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break;
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case TPlatSecDiagnostic::ELoaderCapabilityViolation2:
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message.AppendCapabilityCheck();
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message.Append("Can't load ");
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message.AppendKU(*aDiagnostic.String1(),aCalledFromKernel);
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message.Append(" because it links to ");
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message.AppendKU(*aDiagnostic.String2(),aCalledFromKernel);
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message.Append(" which has the following capabilities missing: ");
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message.AppendCapabilities(aDiagnostic.iSecurityInfo.iCaps);
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break;
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case TPlatSecDiagnostic::EThreadCapabilityCheckFail:
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message.AppendCapabilityCheck();
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message.AppendObject((DObject*)aDiagnostic.iArg1);
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message.Append(" attempted an operation");
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if((DObject*)aDiagnostic.iArg1!=TheCurrentThread)
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{
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message.Append(" which was checked by ");
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message.AppendObject(TheCurrentThread);
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}
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message.Append(" and was found to be missing the capability ");
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message.AppendCapability((TCapability)aDiagnostic.iArg2);
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break;
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case TPlatSecDiagnostic::EProcessCapabilityCheckFail:
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message.AppendCapabilityCheck();
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message.AppendObject((DObject*)aDiagnostic.iArg1);
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message.Append(" attempted an operation");
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if((DObject*)aDiagnostic.iArg1!=TheCurrentThread->iOwningProcess)
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{
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message.Append(" which was checked by ");
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message.AppendObject(TheCurrentThread->iOwningProcess);
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}
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message.Append(" and was found to be missing the capability ");
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message.AppendCapability((TCapability)aDiagnostic.iArg2);
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break;
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case TPlatSecDiagnostic::EKernelSecureIdCheckFail:
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message.AppendSecureIdCheck();
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message.AppendObject((DObject*)aDiagnostic.iArg1);
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message.Append(" attempted an operation requiring the secure id: ");
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message.AppendHex((TUint32)aDiagnostic.iArg2);
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message.Append(".");
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break;
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case TPlatSecDiagnostic::EKernelObjectPolicyCheckFail:
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message.AppendPolicyCheck(aDiagnostic);
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message.AppendObject((DObject*)aDiagnostic.iArg1);
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goto capabilityCheckFail;
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case TPlatSecDiagnostic::ECreatorCapabilityCheckFail:
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message.AppendPolicyCheck(aDiagnostic);
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message.Append("The creator of the current process");
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goto capabilityCheckFail;
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case TPlatSecDiagnostic::EHandleCapabilityCheckFail:
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message.AppendPolicyCheck(aDiagnostic);
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message.AppendObject(aDiagnostic.iArg1);
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goto capabilityCheckFail;
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case TPlatSecDiagnostic::EMessageCapabilityCheckFail:
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message.AppendPolicyCheck(aDiagnostic);
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message.AppendMessage(aDiagnostic.iArg1);
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goto capabilityCheckFail;
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case TPlatSecDiagnostic::ECreatorPolicyCheckFail:
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message.AppendPolicyCheck(aDiagnostic);
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message.Append("The creator of the current process");
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// fall through
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capabilityCheckFail:
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message.Append(" was checked by ");
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message.AppendObject(TheCurrentThread);
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message.Append(" and was found to be missing ");
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if(aDiagnostic.iSecurityInfo.iSecureId != 0)
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{
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message.Append("the SecureId: ");
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message.AppendHex(aDiagnostic.iSecurityInfo.iSecureId);
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if(aDiagnostic.iSecurityInfo.iCaps.NotEmpty())
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{
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message.Append(" and the capabilities: ");
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message.AppendCapabilities(aDiagnostic.iSecurityInfo.iCaps);
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}
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}
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else if(aDiagnostic.iSecurityInfo.iVendorId != 0)
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{
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message.Append("the VendorId: ");
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message.AppendHex(aDiagnostic.iSecurityInfo.iVendorId);
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if(aDiagnostic.iSecurityInfo.iCaps.NotEmpty())
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{
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message.Append(" and the capabilities: ");
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message.AppendCapabilities(aDiagnostic.iSecurityInfo.iCaps);
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}
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}
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else
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{
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|
375 |
if(aDiagnostic.iArg2 == ECapability_None)
|
|
|
376 |
{
|
|
|
377 |
if(aDiagnostic.iSecurityInfo.iCaps.NotEmpty())
|
|
|
378 |
{
|
|
|
379 |
message.Append("the capabilities: ");
|
|
|
380 |
message.AppendCapabilities(aDiagnostic.iSecurityInfo.iCaps);
|
|
|
381 |
}
|
|
|
382 |
else
|
|
|
383 |
message.Append("nothing. (An 'always fail' policy check)");
|
|
|
384 |
}
|
|
|
385 |
else
|
|
|
386 |
{
|
|
|
387 |
message.Append("the capability: ");
|
|
|
388 |
message.AppendCapability((TCapability)aDiagnostic.iArg2);
|
|
|
389 |
}
|
|
|
390 |
}
|
|
|
391 |
message.Append(".");
|
|
|
392 |
break;
|
|
|
393 |
|
|
|
394 |
case TPlatSecDiagnostic::EKernelProcessIsolationFail:
|
|
|
395 |
message.AppendProcessIsolationCheck();
|
|
|
396 |
message.AppendObject(&Kern::CurrentThread());
|
|
|
397 |
message.Append(" attempted an prohibited operation.");
|
|
|
398 |
break;
|
|
|
399 |
|
|
|
400 |
case TPlatSecDiagnostic::EKernelProcessIsolationIPCFail:
|
|
|
401 |
message.AppendProcessIsolationCheck();
|
|
|
402 |
message.AppendMessageK((RMessageK*)aDiagnostic.iArg1);
|
|
|
403 |
message.Append(" was used by ");
|
|
|
404 |
message.AppendObject(TheCurrentThread);
|
|
|
405 |
message.Append(" and found to have an invalid argument.");
|
|
|
406 |
break;
|
|
|
407 |
|
|
|
408 |
default:
|
|
|
409 |
break;
|
|
|
410 |
}
|
|
|
411 |
|
|
|
412 |
if(aDiagnostic.iContextText)
|
|
|
413 |
{
|
|
|
414 |
message.Append(" Additional diagnostic message: ");
|
|
|
415 |
message.AppendKU((const TUint8*)aDiagnostic.iContextText,aDiagnostic.iContextTextLength,aCalledFromKernel);
|
|
|
416 |
}
|
|
|
417 |
message.Emit();
|
|
|
418 |
}
|
|
|
419 |
|
|
|
420 |
TInt PlatSec::EmitDiagnostic(TPlatSecDiagnostic& aDiagnostic, const char* aContextText)
|
|
|
421 |
{
|
|
|
422 |
TUint32 flags = TheSuperPage().KernelConfigFlags();
|
|
|
423 |
TUint32 diag = flags & EKernelConfigPlatSecDiagnostics;
|
|
|
424 |
TUint32 latency_test = TEST_DEBUG_MASK_BIT(KTESTLATENCY);
|
|
|
425 |
if (diag && !latency_test && aContextText!=KSuppressPlatSecDiagnosticMagicValue)
|
|
|
426 |
{
|
|
|
427 |
aDiagnostic.iContextText = aContextText;
|
|
|
428 |
if(aContextText)
|
|
|
429 |
aDiagnostic.iContextTextLength=TPtrC8((const TUint8*)aContextText).Length();
|
|
|
430 |
DoEmitDiagnostic(aDiagnostic,ETrue);
|
|
|
431 |
}
|
|
|
432 |
return flags&EKernelConfigPlatSecEnforcement ? KErrPermissionDenied : KErrNone;
|
|
|
433 |
}
|
|
|
434 |
#endif // !__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
435 |
|
|
|
436 |
TInt PlatSec::EmitDiagnostic()
|
|
|
437 |
{
|
|
|
438 |
return (TheSuperPage().KernelConfigFlags() & EKernelConfigPlatSecEnforcement) ? KErrPermissionDenied : KErrNone;
|
|
|
439 |
}
|
|
|
440 |
|
|
|
441 |
#ifndef __REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
442 |
TInt ExecHandler::PlatSecDiagnostic(TPlatSecDiagnostic* aDiagnostic)
|
|
|
443 |
{
|
|
|
444 |
TUint32 flags = TheSuperPage().KernelConfigFlags();
|
|
|
445 |
TUint32 diag = flags & EKernelConfigPlatSecDiagnostics;
|
|
|
446 |
TUint32 latency_test = TEST_DEBUG_MASK_BIT(KTESTLATENCY);
|
|
|
447 |
if (diag && !latency_test && aDiagnostic)
|
|
|
448 |
{
|
|
|
449 |
TPlatSecDiagnostic d;
|
|
|
450 |
kumemget(&d,aDiagnostic,sizeof(d));
|
|
|
451 |
DoEmitDiagnostic(d,EFalse);
|
|
|
452 |
}
|
|
|
453 |
return flags&EKernelConfigPlatSecEnforcement ? KErrPermissionDenied : KErrNone;
|
|
|
454 |
}
|
|
|
455 |
#else //__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
456 |
TInt ExecHandler::PlatSecDiagnostic(TPlatSecDiagnostic* /*aDiagnostic*/)
|
|
|
457 |
{
|
|
|
458 |
return (TheSuperPage().KernelConfigFlags() & EKernelConfigPlatSecEnforcement) ? KErrPermissionDenied : KErrNone;
|
|
|
459 |
}
|
|
|
460 |
#endif // !__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
461 |
|
|
|
462 |
#ifndef __REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
463 |
EXPORT_C TBool DProcess::DoHasCapability(TCapability aCapability, const char* aContextText)
|
|
|
464 |
{
|
|
|
465 |
if (HasCapabilityNoDiagnostic(aCapability))
|
|
|
466 |
return ETrue;
|
|
|
467 |
return PlatSec::CapabilityCheckFail(this,aCapability,aContextText)==KErrNone;
|
|
|
468 |
}
|
|
|
469 |
#else //__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
470 |
EXPORT_C TBool DProcess::DoHasCapability(TCapability aCapability, const char* /*aContextText*/)
|
|
|
471 |
{
|
|
|
472 |
return DoHasCapability(aCapability);
|
|
|
473 |
}
|
|
|
474 |
#endif // !__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
475 |
|
|
|
476 |
EXPORT_C TBool DProcess::DoHasCapability(TCapability aCapability)
|
|
|
477 |
{
|
|
|
478 |
#ifndef __REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
479 |
return DoHasCapability(aCapability, NULL);
|
|
|
480 |
#else //__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
481 |
if (HasCapabilityNoDiagnostic(aCapability))
|
|
|
482 |
return ETrue;
|
|
|
483 |
return (PlatSec::EmitDiagnostic() == KErrNone);
|
|
|
484 |
#endif // !__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
485 |
}
|
|
|
486 |
|
|
|
487 |
#ifndef __REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
488 |
EXPORT_C TBool DThread::DoHasCapability(TCapability aCapability, const char* aContextText)
|
|
|
489 |
{
|
|
|
490 |
if(iOwningProcess->HasCapabilityNoDiagnostic(aCapability))
|
|
|
491 |
return ETrue;
|
|
|
492 |
return PlatSec::CapabilityCheckFail(this,aCapability,aContextText)==KErrNone;
|
|
|
493 |
}
|
|
|
494 |
#else //__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
495 |
EXPORT_C TBool DThread::DoHasCapability(TCapability aCapability, const char* /*aContextText*/)
|
|
|
496 |
{
|
|
|
497 |
return DoHasCapability(aCapability);
|
|
|
498 |
}
|
|
|
499 |
#endif // !__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
500 |
|
|
|
501 |
EXPORT_C TBool DThread::DoHasCapability(TCapability aCapability)
|
|
|
502 |
{
|
|
|
503 |
#ifndef __REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
504 |
return DoHasCapability(aCapability, NULL);
|
|
|
505 |
#else //__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
506 |
if (iOwningProcess->HasCapabilityNoDiagnostic(aCapability))
|
|
|
507 |
return ETrue;
|
|
|
508 |
return (PlatSec::EmitDiagnostic() == KErrNone);
|
|
|
509 |
#endif // !__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
510 |
}
|
|
|
511 |
|
|
|
512 |
|
|
|
513 |
#ifndef __REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
514 |
/**
|
|
|
515 |
Checks whether the process that owns the current thread has the specified capability.
|
|
|
516 |
|
|
|
517 |
When a check fails the action taken is determined by the system wide Platform Security
|
|
|
518 |
configuration. If PlatSecDiagnostics is ON, then a diagnostic message is emitted.
|
|
|
519 |
If PlatSecEnforcement is OFF, then this function will return True even though the
|
|
|
520 |
check failed.
|
|
|
521 |
|
|
|
522 |
@param aCapability The capability to be tested.
|
|
|
523 |
@param aContextText A string that will be emitted along with any diagnostic message
|
|
|
524 |
that may be issued if the test finds the capability is not present.
|
|
|
525 |
This string must be enclosed in the __PLATSEC_DIAGNOSTIC_STRING macro
|
|
|
526 |
which enables it to be easily removed from the system.
|
|
|
527 |
|
|
|
528 |
@return True if the current thread's process has the capability, False otherwise.
|
|
|
529 |
*/
|
|
|
530 |
EXPORT_C TBool Kern::DoCurrentThreadHasCapability(TCapability aCapability, const char* aContextText)
|
|
|
531 |
{
|
|
|
532 |
#ifndef __REMOVE_PLATSEC_DIAGNOSTIC_STRINGS__
|
|
|
533 |
return TheCurrentThread->HasCapability(aCapability, aContextText);
|
|
|
534 |
#else //__REMOVE_PLATSEC_DIAGNOSTIC_STRINGS__
|
|
|
535 |
return TheCurrentThread->DoHasCapability(aCapability, aContextText);
|
|
|
536 |
#endif // !__REMOVE_PLATSEC_DIAGNOSTIC_STRINGS__
|
|
|
537 |
}
|
|
|
538 |
#else //__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
539 |
/**
|
|
|
540 |
Checks whether the process that owns the current thread has the specified capability.
|
|
|
541 |
|
|
|
542 |
When a check fails the action taken is determined by the system wide Platform Security
|
|
|
543 |
configuration. If PlatSecDiagnostics is ON, then a diagnostic message is emitted.
|
|
|
544 |
If PlatSecEnforcement is OFF, then this function will return True even though the
|
|
|
545 |
check failed.
|
|
|
546 |
|
|
|
547 |
@param aCapability The capability to be tested.
|
|
|
548 |
|
|
|
549 |
@return True if the current thread's process has the capability, False otherwise.
|
|
|
550 |
*/
|
|
|
551 |
EXPORT_C TBool Kern::DoCurrentThreadHasCapability(TCapability aCapability, const char* /*aContextText*/)
|
|
|
552 |
{
|
|
|
553 |
return TheCurrentThread->HasCapability(aCapability);
|
|
|
554 |
}
|
|
|
555 |
#endif // !__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
556 |
|
|
|
557 |
/**
|
|
|
558 |
Checks whether the process that owns the current thread has the specified capability.
|
|
|
559 |
|
|
|
560 |
When a check fails the action taken is determined by the system wide Platform Security
|
|
|
561 |
configuration. If PlatSecDiagnostics is ON, then a diagnostic message is emitted.
|
|
|
562 |
If PlatSecEnforcement is OFF, then this function will return True even though the
|
|
|
563 |
check failed.
|
|
|
564 |
|
|
|
565 |
@param aCapability The capability to be tested.
|
|
|
566 |
@return True if the current thread's process has the capability, False otherwise.
|
|
|
567 |
*/
|
|
|
568 |
EXPORT_C TBool Kern::DoCurrentThreadHasCapability(TCapability aCapability)
|
|
|
569 |
{
|
|
|
570 |
return TheCurrentThread->HasCapability(aCapability);
|
|
|
571 |
}
|
|
|
572 |
|
|
|
573 |
void TCompiledSecurityPolicy::AddCapability(TCapability aCap)
|
|
|
574 |
{
|
|
|
575 |
if((TUint32)aCap<(TUint32)KCSPBitsFree)
|
|
|
576 |
{
|
|
|
577 |
TUint32 mask = 1<<(aCap);
|
|
|
578 |
iCaps |= mask&AllSupportedCapabilities[0];
|
|
|
579 |
}
|
|
|
580 |
}
|
|
|
581 |
|
|
|
582 |
//The inards of TCompiledSecurityPolicy assume this.
|
|
|
583 |
__ASSERT_COMPILE(ECapability_None == -1);
|
|
|
584 |
|
|
|
585 |
TInt TCompiledSecurityPolicy::Set(const TSecurityPolicy& aPolicy)
|
|
|
586 |
{
|
|
|
587 |
iSecureId = 0;
|
|
|
588 |
iCaps = 0;
|
|
|
589 |
__ASSERT_COMPILE(ETypeFail == 0);
|
|
|
590 |
//iCaps = 0 sets the type of the object to ETypeFail as well.
|
|
|
591 |
//This ensures that if the set fails, the object is in a ETypeFail case.
|
|
|
592 |
|
|
|
593 |
if(!aPolicy.Validate())
|
|
|
594 |
return KErrArgument;
|
|
|
595 |
|
|
|
596 |
switch (aPolicy.iType)
|
|
|
597 |
{
|
|
|
598 |
case TSecurityPolicy::ETypeFail:
|
|
|
599 |
SetETypeFail();
|
|
|
600 |
break;
|
|
|
601 |
|
|
|
602 |
case TSecurityPolicy::ETypePass:
|
|
|
603 |
SetETypePass();
|
|
|
604 |
break;
|
|
|
605 |
|
|
|
606 |
case TSecurityPolicy::ETypeC7:
|
|
|
607 |
AddCapability(TCapability(aPolicy.iExtraCaps[0]));
|
|
|
608 |
AddCapability(TCapability(aPolicy.iExtraCaps[1]));
|
|
|
609 |
AddCapability(TCapability(aPolicy.iExtraCaps[2]));
|
|
|
610 |
AddCapability(TCapability(aPolicy.iExtraCaps[3]));
|
|
|
611 |
// Fall through to 3 caps case...
|
|
|
612 |
case TSecurityPolicy::ETypeC3:
|
|
|
613 |
SetETypeCapsOnly();
|
|
|
614 |
AddCapability(TCapability(aPolicy.iCaps[0]));
|
|
|
615 |
AddCapability(TCapability(aPolicy.iCaps[1]));
|
|
|
616 |
AddCapability(TCapability(aPolicy.iCaps[2]));
|
|
|
617 |
break;
|
|
|
618 |
|
|
|
619 |
case TSecurityPolicy::ETypeS3:
|
|
|
620 |
SetETypeSecureId();
|
|
|
621 |
iSecureId = aPolicy.iSecureId;
|
|
|
622 |
AddCapability(TCapability(aPolicy.iCaps[0]));
|
|
|
623 |
AddCapability(TCapability(aPolicy.iCaps[1]));
|
|
|
624 |
AddCapability(TCapability(aPolicy.iCaps[2]));
|
|
|
625 |
break;
|
|
|
626 |
|
|
|
627 |
case TSecurityPolicy::ETypeV3:
|
|
|
628 |
SetETypeVendorId();
|
|
|
629 |
iVendorId = aPolicy.iVendorId;
|
|
|
630 |
AddCapability(TCapability(aPolicy.iCaps[0]));
|
|
|
631 |
AddCapability(TCapability(aPolicy.iCaps[1]));
|
|
|
632 |
AddCapability(TCapability(aPolicy.iCaps[2]));
|
|
|
633 |
break;
|
|
|
634 |
|
|
|
635 |
default:
|
|
|
636 |
// Can't get here because aPolicy.Validate() call would detect this
|
|
|
637 |
break;
|
|
|
638 |
}
|
|
|
639 |
return KErrNone;
|
|
|
640 |
}
|
|
|
641 |
|
|
|
642 |
/** Checks this policy against the supplied SSecurityInfo.
|
|
|
643 |
@param aSecInfo The SSecurityInfo object to check against this TCompiledSecurityPolicy.
|
|
|
644 |
@param aMissing Contains a list of the missing security attributes if the
|
|
|
645 |
policy check fails. This parameter is untouched if the policy check passes.
|
|
|
646 |
@return ETrue if all the requirements of this TSecurityPolicy are met, EFalse
|
|
|
647 |
otherwise.
|
|
|
648 |
*/
|
|
|
649 |
TBool TCompiledSecurityPolicy::CheckPolicy(const SSecurityInfo& aSecInfo, SSecurityInfo& aMissing) const
|
|
|
650 |
{
|
|
|
651 |
//In the pass case, checking only against capabilities. This function should
|
|
|
652 |
//be quite fast. Most of the code here is for the failure case when aMissing
|
|
|
653 |
//has to be filled in.
|
|
|
654 |
__ASSERT_COMPILE(SCapabilitySet::ENCapW == 2);
|
|
|
655 |
__ASSERT_COMPILE(ECapability_Limit <= KCSPBitsFree);
|
|
|
656 |
TUint32 requiredCaps = Caps() & ~aSecInfo.iCaps[0];
|
|
|
657 |
switch(Type())
|
|
|
658 |
{
|
|
|
659 |
case ETypeFail:
|
|
|
660 |
aMissing.iSecureId = 0;
|
|
|
661 |
aMissing.iVendorId = 0;
|
|
|
662 |
aMissing.iCaps[0] = 0;
|
|
|
663 |
aMissing.iCaps[1] = 0;
|
|
|
664 |
break;
|
|
|
665 |
|
|
|
666 |
case ETypeCapsOnly: //this case handles the pass always case
|
|
|
667 |
if(!requiredCaps)
|
|
|
668 |
return ETrue;
|
|
|
669 |
aMissing.iSecureId = 0;
|
|
|
670 |
aMissing.iVendorId = 0;
|
|
|
671 |
aMissing.iCaps[0] = requiredCaps;
|
|
|
672 |
aMissing.iCaps[1] = 0;
|
|
|
673 |
break;
|
|
|
674 |
|
|
|
675 |
case ETypeSecureId:
|
|
|
676 |
if(!requiredCaps && iSecureId == aSecInfo.iSecureId)
|
|
|
677 |
return ETrue;
|
|
|
678 |
aMissing.iSecureId = aSecInfo.iSecureId;
|
|
|
679 |
aMissing.iVendorId = 0;
|
|
|
680 |
aMissing.iCaps[0] = requiredCaps;
|
|
|
681 |
aMissing.iCaps[1] = 0;
|
|
|
682 |
break;
|
|
|
683 |
|
|
|
684 |
case ETypeVendorId:
|
|
|
685 |
if(!requiredCaps && iVendorId == aSecInfo.iVendorId)
|
|
|
686 |
return ETrue;
|
|
|
687 |
aMissing.iVendorId = aSecInfo.iVendorId;
|
|
|
688 |
aMissing.iSecureId = 0;
|
|
|
689 |
aMissing.iCaps[0] = requiredCaps;
|
|
|
690 |
aMissing.iCaps[1] = 0;
|
|
|
691 |
break;
|
|
|
692 |
|
|
|
693 |
default:
|
|
|
694 |
__ASSERT_COMPILE(sizeof(iCaps)*8 - KCSPBitsFree == 2);
|
|
|
695 |
//not possible. Type() only returns 2 bits
|
|
|
696 |
break;
|
|
|
697 |
}
|
|
|
698 |
return EFalse;
|
|
|
699 |
}
|
|
|
700 |
|
|
|
701 |
#ifndef __REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
702 |
/** Checks this policy against the platform security attributes of aProcess.
|
|
|
703 |
@param aProcess The RProcess object to check against this TSecurityPolicy.
|
|
|
704 |
@return ETrue if all the requirements of this TSecurityPolicy are met by the
|
|
|
705 |
platform security attributes of aProcess, EFalse otherwise.
|
|
|
706 |
*/
|
|
|
707 |
TBool TCompiledSecurityPolicy::DoCheckPolicy(DProcess* aProcess, const char* aDiagnostic) const
|
|
|
708 |
{
|
|
|
709 |
SSecurityInfo missing;
|
|
|
710 |
TBool pass = CheckPolicy(aProcess->iS, missing);
|
|
|
711 |
if(!pass)
|
|
|
712 |
pass = PlatSec::PolicyCheckFail(aProcess,missing,aDiagnostic)==KErrNone;
|
|
|
713 |
return pass;
|
|
|
714 |
}
|
|
|
715 |
#endif // !__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
716 |
|
|
|
717 |
/** Checks this policy against the platform security attributes of aProcess.
|
|
|
718 |
@param aProcess The RProcess object to check against this TSecurityPolicy.
|
|
|
719 |
@return ETrue if all the requirements of this TSecurityPolicy are met by the
|
|
|
720 |
platform security attributes of aProcess, EFalse otherwise.
|
|
|
721 |
*/
|
|
|
722 |
TBool TCompiledSecurityPolicy::DoCheckPolicy(DProcess* aProcess) const
|
|
|
723 |
{
|
|
|
724 |
#ifndef __REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
725 |
return DoCheckPolicy(aProcess, NULL);
|
|
|
726 |
#else //__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
727 |
SSecurityInfo missing;
|
|
|
728 |
TBool pass = CheckPolicy(aProcess->iS, missing);
|
|
|
729 |
if(!pass)
|
|
|
730 |
pass = (PlatSec::EmitDiagnostic() == KErrNone);
|
|
|
731 |
return pass;
|
|
|
732 |
#endif // !__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
733 |
}
|
|
|
734 |
|
|
|
735 |
#ifndef __REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
736 |
/** Checks this policy against the platform security attributes of the process
|
|
|
737 |
owning aThread.
|
|
|
738 |
@param aThread The thread whose owning process' platform security attributes
|
|
|
739 |
are to be checked against this TSecurityPolicy.
|
|
|
740 |
@return ETrue if all the requirements of this TSecurityPolicy are met by the
|
|
|
741 |
platform security parameters of the owning process of aThread, EFalse otherwise.
|
|
|
742 |
*/
|
|
|
743 |
TBool TCompiledSecurityPolicy::DoCheckPolicy(DThread* aThread, const char* aDiagnostic) const
|
|
|
744 |
{
|
|
|
745 |
SSecurityInfo missing;
|
|
|
746 |
TBool pass = CheckPolicy(aThread->iOwningProcess->iS, missing);
|
|
|
747 |
if(!pass)
|
|
|
748 |
pass = PlatSec::PolicyCheckFail(aThread,missing,aDiagnostic)==KErrNone;
|
|
|
749 |
return pass;
|
|
|
750 |
}
|
|
|
751 |
#endif // !__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
752 |
|
|
|
753 |
/** Checks this policy against the platform security attributes of the process
|
|
|
754 |
owning aThread.
|
|
|
755 |
@param aThread The thread whose owning process' platform security attributes
|
|
|
756 |
are to be checked against this TSecurityPolicy.
|
|
|
757 |
@return ETrue if all the requirements of this TSecurityPolicy are met by the
|
|
|
758 |
platform security parameters of the owning process of aThread, EFalse otherwise.
|
|
|
759 |
*/
|
|
|
760 |
TBool TCompiledSecurityPolicy::DoCheckPolicy(DThread* aThread) const
|
|
|
761 |
{
|
|
|
762 |
#ifndef __REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
763 |
return DoCheckPolicy(aThread, NULL);
|
|
|
764 |
#else //__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
765 |
SSecurityInfo missing;
|
|
|
766 |
TBool pass = CheckPolicy(aThread->iOwningProcess->iS, missing);
|
|
|
767 |
if(!pass)
|
|
|
768 |
pass = (PlatSec::EmitDiagnostic() == KErrNone);
|
|
|
769 |
return pass;
|
|
|
770 |
#endif // !__REMOVE_PLATSEC_DIAGNOSTICS__
|
|
|
771 |
}
|
|
|
772 |
|
|
|
773 |
|
|
|
774 |
/**
|
|
|
775 |
Get the Vendor ID for a thread's process.
|
|
|
776 |
|
|
|
777 |
If an intended use of this method is to check that the Vendor ID is
|
|
|
778 |
a given value, then the use of a TSecurityPolicy object should be
|
|
|
779 |
considered. This has the benefit that the TSecurityPolicy::CheckPolicy methods are
|
|
|
780 |
configured by the system wide Platform Security configuration. I.e. are
|
|
|
781 |
capable of emitting diagnostic messages when a check fails and/or the
|
|
|
782 |
check can be forced to always pass.
|
|
|
783 |
|
|
|
784 |
@param aThread Pointer to thread object.
|
|
|
785 |
|
|
|
786 |
@return The Vendor ID of the process to which \a aThread belongs.
|
|
|
787 |
*/
|
|
|
788 |
EXPORT_C TVendorId Kern::ThreadVendorId(DThread* aThread)
|
|
|
789 |
{
|
|
|
790 |
return aThread->iOwningProcess->iS.iVendorId;
|
|
|
791 |
}
|
|
|
792 |
|
|
|
793 |
/**
|
|
|
794 |
Get the Vendor ID for a process.
|
|
|
795 |
|
|
|
796 |
If an intended use of this method is to check that the Vendor ID is
|
|
|
797 |
a given value, then the use of a TSecurityPolicy object should be
|
|
|
798 |
considered. This has the benefit that the TSecurityPolicy::CheckPolicy methods are
|
|
|
799 |
configured by the system wide Platform Security configuration. I.e. are
|
|
|
800 |
capable of emitting diagnostic messages when a check fails and/or the
|
|
|
801 |
check can be forced to always pass.
|
|
|
802 |
|
|
|
803 |
@param aProcess Pointer to process object.
|
|
|
804 |
|
|
|
805 |
@return The Vendor ID of \a aProcess.
|
|
|
806 |
*/
|
|
|
807 |
EXPORT_C TVendorId Kern::ProcessVendorId(DProcess* aProcess)
|
|
|
808 |
{
|
|
|
809 |
return aProcess->iS.iVendorId;
|
|
|
810 |
}
|
|
|
811 |
|
|
|
812 |
/**
|
|
|
813 |
Get the Secure ID for a thread's process.
|
|
|
814 |
|
|
|
815 |
If an intended use of this method is to check that the Secure ID is
|
|
|
816 |
a given value, then the use of a TSecurityPolicy object should be
|
|
|
817 |
considered. This has the benefit that the TSecurityPolicy::CheckPolicy methods are
|
|
|
818 |
configured by the system wide Platform Security configuration. I.e. are
|
|
|
819 |
capable of emitting diagnostic messages when a check fails and/or the
|
|
|
820 |
check can be forced to always pass.
|
|
|
821 |
|
|
|
822 |
@param aThread Pointer to thread object.
|
|
|
823 |
|
|
|
824 |
@return The Secure ID of the process to which \a aThread belongs.
|
|
|
825 |
*/
|
|
|
826 |
EXPORT_C TSecureId Kern::ThreadSecureId(DThread* aThread)
|
|
|
827 |
{
|
|
|
828 |
return aThread->iOwningProcess->iS.iSecureId;
|
|
|
829 |
}
|
|
|
830 |
|
|
|
831 |
/**
|
|
|
832 |
Get the Secure ID for a process.
|
|
|
833 |
|
|
|
834 |
If an intended use of this method is to check that the Secure ID is
|
|
|
835 |
a given value, then the use of a TSecurityPolicy object should be
|
|
|
836 |
considered. This has the benefit that the TSecurityPolicy::CheckPolicy methods are
|
|
|
837 |
configured by the system wide Platform Security configuration. I.e. are
|
|
|
838 |
capable of emitting diagnostic messages when a check fails and/or the
|
|
|
839 |
check can be forced to always pass.
|
|
|
840 |
|
|
|
841 |
@param aProcess Pointer to process object.
|
|
|
842 |
|
|
|
843 |
@return The Secure ID of \a aProcess.
|
|
|
844 |
*/
|
|
|
845 |
EXPORT_C TSecureId Kern::ProcessSecureId(DProcess* aProcess)
|
|
|
846 |
{
|
|
|
847 |
return aProcess->iS.iSecureId;
|
|
|
848 |
}
|