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// Copyright (c) 2006-2010 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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// Provides the debug security server session implementation.
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//
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//
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// Needed so we get the text strings for capabilities
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#define __INCLUDE_CAPABILITY_NAMES__
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#include <e32std.h>
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#include <e32std_private.h>
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#include <d32btrace.h>
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#include <e32base.h>
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#include <e32base_private.h>
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#include <e32uid.h>
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#include <f32file.h>
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#include <e32capability.h>
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#include <rm_debug_api.h>
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// required for direct parsing of e32image/tromimage headers
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#include <f32image.h>
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#include <e32rom.h>
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//added for direct access to media driver
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#include <partitions.h>
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#include <ftlcontrolio.h>
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#include "c_security_svr_session.h"
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#include "c_security_svr_server.h"
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#include "c_security_svr_async.h"
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#include "rm_debug_logging.h"
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#ifdef _DEBUG
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#include "low_mem_requests.h"
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#endif
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using namespace Debug;
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CSecuritySvrSession::CSecuritySvrSession(const TProcessId& aDebugAgentProcessId)
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: iDebugAgentProcessId(aDebugAgentProcessId),
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iServerNotified(EFalse),
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iCrashConnected(EFalse)
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{
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// Ensure that this debug agent has no target capability override
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// by default
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iOEMDebugCapabilities.SetEmpty();
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}
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void CSecuritySvrSession::ServiceError(const RMessage2 &aMessage, TInt aError)
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{
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LOG_MSG2("CSecuritySvrSession::ServiceError(), aError: %d\n", aError);
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//insert ending heap markers
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HeapWatcher(aMessage.Function(), EFalse);
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aMessage.Complete(aError);
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}
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/**
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Called by the client/server framework as part of session creation.
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Notifies the server that a session is being created
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*/
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void CSecuritySvrSession::CreateL()
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{
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LOG_MSG("CSecuritySvrSession::CreateL()\n");
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//notify the server that the session has been opened
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Server().SessionOpened();
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iServerNotified = ETrue;
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}
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/**
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Returns a reference to the DSS
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@return a reference to the DSS
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*/
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CSecuritySvrServer& CSecuritySvrSession::Server() const
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{
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return *static_cast<CSecuritySvrServer*>(const_cast<CServer2*>(CSession2::Server()));
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}
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/**
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Session destructor. Performs necessary cleanup and notifies the server that the
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session is being closed
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*/
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CSecuritySvrSession::~CSecuritySvrSession()
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{
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LOG_MSG("CSecuritySvrSession::~CSecuritySvrSession!()\n");
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// Cancel any outstanding async objects.
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iAsyncHandlers.ResetAndDestroy();
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// Inform the device driver of the agent detach.
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Server().iKernelDriver.DetachAgent(iDebugAgentProcessId.Id());
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LOG_MSG( "CSecuritySvrSession::~CSecuritySvrSession() : -> securityServer.DetachAllProcesses()\n" );
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Server().DetachAllProcesses(iDebugAgentProcessId);
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//notify the server that the session has closed
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if(iServerNotified)
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{
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Server().SessionClosed();
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}
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}
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void CSecuritySvrSession::ConstructL()
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{
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// nothing to do
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}
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/**
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Used to insert heap checking markers.
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@param aFunction The function that heap markers should be added for
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@param aEntry if ETrue indicates that heap checking is starting, if EFalse
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that heap checking is ending.
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*/
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void CSecuritySvrSession::HeapWatcher(const TUint32 aFunction, const TBool aEntry) const
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{
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switch(aFunction)
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{
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case EDebugServAttachExecutable:
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return;
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case EDebugServDetachExecutable:
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return;
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case EDebugServSuspendThread:
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return;
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case EDebugServResumeThread:
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return;
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case EDebugServAttachAll:
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return;
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case EDebugServDetachAll:
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return;
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// used for out-of-memory testing in debug mode
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#ifdef _DEBUG
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// start heap marking in on entry, do nothing on exit
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case EDebugServMarkHeap:
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{
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if(aEntry)
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{
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__UHEAP_MARK;
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}
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return;
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}
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// stop heap marking on exit, do nothing on entry
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case EDebugServMarkEnd:
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{
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if(!aEntry)
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{
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__UHEAP_MARKEND;
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}
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return;
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}
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#endif
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default:
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if(aEntry)
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{
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__UHEAP_MARK;
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}
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else
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{
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__UHEAP_MARKEND;
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}
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return;
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}
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}
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void CSecuritySvrSession::ServiceL(const RMessage2& aMessage)
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//
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// Session service handler
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//
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{
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//insert starting heap markers
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HeapWatcher(aMessage.Function(), ETrue);
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switch(aMessage.Function())
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{
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case EDebugServResumeThread:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServResumeThread\n" );
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ResumeThreadL(aMessage);
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break;
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case EDebugServSuspendThread:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServSuspendThread\n" );
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SuspendThreadL(aMessage);
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break;
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case EDebugServReadMemory:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServReadMemory\n" );
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ReadMemoryL(aMessage);
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break;
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case EDebugServWriteMemory:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServWriteMemory\n" );
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WriteMemoryL(aMessage);
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break;
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case EDebugServSetBreak:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServSetBreak\n" );
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SetBreakL(aMessage);
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break;
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case EDebugServClearBreak:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServClearBreak\n" );
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ClearBreakL(aMessage);
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break;
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case EDebugServModifyBreak:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServModifyBreak\n" );
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ModifyBreakL(aMessage);
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break;
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case EDebugServModifyProcessBreak:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServModifyProcessBreak\n" );
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ModifyProcessBreakL(aMessage);
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break;
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case EDebugServBreakInfo:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServBreakInfo\n" );
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BreakInfoL(aMessage);
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break;
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case EDebugServReadRegisters:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServReadRegisters\n" );
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ReadRegistersL(aMessage);
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break;
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case EDebugServWriteRegisters:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServWriteRegisters\n" );
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WriteRegistersL(aMessage);
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break;
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case EDebugServGetEvent:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServGetEvent\n" );
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GetEventL(aMessage);
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break;
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case EDebugServCancelGetEvent:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServCancelGetEvent\n" );
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CancelGetEventL(aMessage);
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break;
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case EDebugServAttachExecutable:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServAttachExecutable\n" );
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AttachProcessL(aMessage);
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break;
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case EDebugServDetachExecutable:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServDetachExecutable\n" );
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DetachProcessL(aMessage);
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break;
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case EDebugServAttachAll:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServAttachAll\n" );
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AttachAllL(aMessage);
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break;
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case EDebugServDetachAll:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServDetachAll\n" );
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DetachAllL(aMessage);
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break;
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case EDebugServGetDebugFunctionalityBufSize:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServGetDebugFunctionalityBufSize\n" );
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GetDebugFunctionalityBufSizeL(aMessage);
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break;
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case EDebugServGetDebugFunctionality:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServGetDebugFunctionality\n" );
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GetDebugFunctionalityL(aMessage);
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break;
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case EDebugServSetEventAction:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServSetEventAction\n" );
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SetEventActionL(aMessage);
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break;
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case EDebugServGetList:
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LOG_MSG( "CSecuritySvrSession::ServiceL() EDebugServGetList\n" );
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GetListL(aMessage);
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break;
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case EDebugServStep:
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LOG_MSG("CSecuritySvrSession::ServiceL() EDebugServStep\n");
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StepL(aMessage);
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break;
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case EDebugServSetProcessBreak:
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LOG_MSG("CSecuritySvrSession::ServiceL() EDebugServSetProcessBreak\n");
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SetProcessBreakL(aMessage);
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break;
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case EDebugServProcessBreakInfo:
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LOG_MSG("CSecuritySvrSession::ServiceL() EDebugServProcessBreakInfo\n");
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ProcessBreakInfoL(aMessage);
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break;
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case EDebugServKillProcess:
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LOG_MSG("CSecuritySvrSession::ServiceL() EDebugServKillProcess\n");
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KillProcessL(aMessage);
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break;
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#ifdef _DEBUG
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case EDebugServMarkHeap:
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LOG_MSG("CSecuritySvrSession::ServiceL() EDebugServMarkHeap\n");
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// all taken care of in HeapWatcher
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aMessage.Complete(KErrNone);
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break;
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case EDebugServMarkEnd:
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LOG_MSG("CSecuritySvrSession::ServiceL() EDebugServMarkEnd\n");
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// all taken care of in HeapWatcher
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aMessage.Complete(KErrNone);
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break;
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case EDebugServFailAlloc:
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LOG_MSG("CSecuritySvrSession::ServiceL() EDebugServFailAlloc\n");
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DoFailAlloc(aMessage);
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break;
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#endif
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case EDebugServReadCrashFlash:
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ReadCrashLogL(aMessage);
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break;
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case EDebugServWriteCrashFlash:
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LOG_MSG("CSecuritySvrSession::ServiceL() EDebugServWriteCrashFlash\n");
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WriteCrashConfigL(aMessage);
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break;
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case EDebugServEraseCrashFlash:
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LOG_MSG("CSecuritySvrSession::ServiceL() EDebugServEraseCrashFlash\n");
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EraseCrashLogL(aMessage);
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break;
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case EDebugServEraseEntireCrashFlash:
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LOG_MSG("CSecuritySvrSession::ServiceL() EDebugServEraseEntireCrashFlash\n");
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EraseEntireCrashLogL(aMessage);
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break;
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default:
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LOG_MSG( "CSecuritySvrSession::ServiceL() Unknown request, calling User::Leave(KErrNotSupported);\n" );
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User::Leave(KErrNotSupported);
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break;
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}
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//insert ending heap markers
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HeapWatcher(aMessage.Function(), EFalse);
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LOG_EXIT();
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}
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#ifdef _DEBUG
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/**
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Used to control heap failure in debug mode.
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@param aMessage If aMessage.Int0 is non-zero then heap will be set to fail on that allocation.
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If aMessage.Int0 is zero then the heap failure count is reset
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*/
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void CSecuritySvrSession::DoFailAlloc(const RMessage2& aMessage)
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{
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TInt count = aMessage.Int0();
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if(count == 0)
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{
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371 |
__UHEAP_RESET;
|
|
|
372 |
}
|
|
|
373 |
else
|
|
|
374 |
{
|
|
|
375 |
__UHEAP_FAILNEXT(count);
|
|
|
376 |
}
|
|
|
377 |
aMessage.Complete(KErrNone);
|
|
|
378 |
}
|
|
|
379 |
#endif
|
|
|
380 |
|
|
|
381 |
/**
|
|
|
382 |
Suspends execution of the specified thread.
|
|
|
383 |
|
|
|
384 |
@param aMessage contains an integer representation of the target thread's
|
|
|
385 |
thread ID at offset 0.
|
|
|
386 |
|
|
|
387 |
@leave KErrPermissionDenied if security check fails or KErrArgument if the
|
|
|
388 |
thread does not exist
|
|
|
389 |
*/
|
|
|
390 |
void CSecuritySvrSession::SuspendThreadL(const RMessage2& aMessage)
|
|
|
391 |
{
|
|
|
392 |
|
|
|
393 |
LOG_MSG( "CSecuritySvrSession::SuspendThreadL()\n" );
|
|
|
394 |
|
|
|
395 |
//get thread ID
|
|
|
396 |
TThreadId threadId = ReadTThreadIdL(aMessage, 0);
|
|
|
397 |
//check attached
|
|
|
398 |
CheckAttachedL(threadId, aMessage, EFalse);
|
|
|
399 |
|
|
|
400 |
//security check passed so can perform actions
|
|
|
401 |
User::LeaveIfError(Server().iKernelDriver.SuspendThread(threadId));
|
|
|
402 |
|
|
|
403 |
aMessage.Complete(KErrNone);
|
|
|
404 |
}
|
|
|
405 |
|
|
|
406 |
/**
|
|
|
407 |
Resumes execution of the specified thread.
|
|
|
408 |
|
|
|
409 |
@param aMessage contains an integer representation of the target thread's
|
|
|
410 |
thread ID at offset 0.
|
|
|
411 |
|
|
|
412 |
@leave KErrPermissionDenied if security check fails or KErrArgument if the
|
|
|
413 |
thread does not exist
|
|
|
414 |
*/
|
|
|
415 |
void CSecuritySvrSession::ResumeThreadL(const RMessage2& aMessage)
|
|
|
416 |
{
|
|
|
417 |
LOG_MSG( "CSecuritySvrSession::ResumeThreadL()\n" );
|
|
|
418 |
|
|
|
419 |
//get thread ID
|
|
|
420 |
TThreadId threadId = ReadTThreadIdL(aMessage, 0);
|
|
|
421 |
|
|
|
422 |
//check attached
|
|
|
423 |
CheckAttachedL(threadId, aMessage, EFalse);
|
|
|
424 |
|
|
|
425 |
//security check passed so can perform actions
|
|
|
426 |
TInt err = Server().iKernelDriver.ResumeThread(threadId);
|
|
|
427 |
aMessage.Complete(err);
|
|
|
428 |
}
|
|
|
429 |
|
|
|
430 |
void CSecuritySvrSession::GetDebugFunctionalityBufSizeL(const RMessage2& aMessage)
|
|
|
431 |
//
|
|
|
432 |
// Retrieve size of functionality data buffer in bytes which must be allocated
|
|
|
433 |
// by the client
|
|
|
434 |
//
|
|
|
435 |
{
|
|
|
436 |
LOG_MSG( "CSecuritySvrSession::GetDebugFunctionalityBufSizeL()\n" );
|
|
|
437 |
|
|
|
438 |
TUint32 result = 0;
|
|
|
439 |
// Get Buffer size from the kernel driver
|
|
|
440 |
User::LeaveIfError(Server().iKernelDriver.GetDebugFunctionalityBufSize(result));
|
|
|
441 |
|
|
|
442 |
TPtr8 stuff((TUint8*)&result,4, 4);
|
|
|
443 |
|
|
|
444 |
aMessage.WriteL(0,stuff);
|
|
|
445 |
|
|
|
446 |
aMessage.Complete(KErrNone);
|
|
|
447 |
}
|
|
|
448 |
|
|
|
449 |
void CSecuritySvrSession::GetDebugFunctionalityL(const RMessage2& aMessage)
|
|
|
450 |
//
|
|
|
451 |
// Retrieve the functionality data and place it in a buffer
|
|
|
452 |
// allocated by the client.
|
|
|
453 |
//
|
|
|
454 |
{
|
|
|
455 |
LOG_MSG( "CSecuritySvrSession::GetDebugFunctionalityL()\n" );
|
|
|
456 |
|
|
|
457 |
TUint32 dfsize = 0;
|
|
|
458 |
|
|
|
459 |
// Get Buffer size from the kernel driver
|
|
|
460 |
User::LeaveIfError(Server().iKernelDriver.GetDebugFunctionalityBufSize(dfsize));
|
|
|
461 |
|
|
|
462 |
// Allocate space for the functionality data
|
|
|
463 |
HBufC8* dftext = HBufC8::NewLC(dfsize);
|
|
|
464 |
|
|
|
465 |
const TPtr8& dfPtr = dftext->Des();
|
|
|
466 |
|
|
|
467 |
// Extract said data from the device driver
|
|
|
468 |
User::LeaveIfError(Server().iKernelDriver.GetDebugFunctionality((TDes8&)dfPtr));
|
|
|
469 |
|
|
|
470 |
// Return data to client
|
|
|
471 |
aMessage.WriteL(0,dfPtr);
|
|
|
472 |
|
|
|
473 |
// Free buffer
|
|
|
474 |
CleanupStack::PopAndDestroy(dftext);
|
|
|
475 |
|
|
|
476 |
aMessage.Complete(KErrNone);
|
|
|
477 |
}
|
|
|
478 |
|
|
|
479 |
/**
|
|
|
480 |
Reads memory from a specified thread using the passed parameters. The user
|
|
|
481 |
should ensure that the TPtr8 that is passed in has size greater than or equal
|
|
|
482 |
to the size of the memory that is trying to be read.
|
|
|
483 |
|
|
|
484 |
@param aMessage The RMessage2 object should be constructed as follows:
|
|
|
485 |
* aMessage.Int0() is the thread ID of the target debug app
|
|
|
486 |
* aMessage.Ptr1() is a TMemoryInfo object which contains the following:
|
|
|
487 |
* the address of the memory to be read from the target debug thread
|
|
|
488 |
* the size of the memory block to be read from the target debug thread
|
|
|
489 |
* the access size to use
|
|
|
490 |
* the endianess to interpret the data as
|
|
|
491 |
* aMessage.Ptr2() is the address of the buffer in the debug agent thread
|
|
|
492 |
that the data from the target debug app should be written into
|
|
|
493 |
|
|
|
494 |
@leave KErrPermissionDenied if client is not attached to the target
|
|
|
495 |
thread's process,
|
|
|
496 |
KErrNoMemory if memory could not be allocated,
|
|
|
497 |
KErrArgument if there are problems with the aMessage object,
|
|
|
498 |
KErrBadHandle if the thread represented by aMessage.Ptr0() is invalid,
|
|
|
499 |
an error value from CSecuritySvrSession::ValidateMemoryInfo if checking
|
|
|
500 |
the memory attributes failed,
|
|
|
501 |
or another of the system wide error codes
|
|
|
502 |
*/
|
|
|
503 |
void CSecuritySvrSession::ReadMemoryL(const RMessage2& aMessage)
|
|
|
504 |
{
|
|
|
505 |
LOG_MSG( "CSecuritySvrSession::ReadMemoryL()\n" );
|
|
|
506 |
|
|
|
507 |
//get debug app thread ID
|
|
|
508 |
TThreadId threadId = ReadTThreadIdL(aMessage, 0);
|
|
|
509 |
|
|
|
510 |
CheckAttachedL(threadId, aMessage, ETrue);
|
|
|
511 |
|
|
|
512 |
//create and initialise the memory info object
|
|
|
513 |
TMemoryInfo targetMemory;
|
|
|
514 |
TPtr8 targetMemoryPtr( (TUint8 *)&targetMemory, sizeof(TMemoryInfo) );
|
|
|
515 |
|
|
|
516 |
aMessage.ReadL(1,targetMemoryPtr);
|
|
|
517 |
|
|
|
518 |
//check memory info is acceptable
|
|
|
519 |
ValidateMemoryInfoL(threadId, targetMemory, ETrue);
|
|
|
520 |
|
|
|
521 |
RBuf8 data;
|
|
|
522 |
data.CreateL(targetMemory.iSize);
|
|
|
523 |
data.CleanupClosePushL();
|
|
|
524 |
|
|
|
525 |
//fill buffer with data from target debug thread
|
|
|
526 |
User::LeaveIfError(Server().iKernelDriver.ReadMemory(threadId, targetMemory.iAddress, targetMemory.iSize, data));
|
|
|
527 |
|
|
|
528 |
//attempt to write the data from the target debug thread back to the agent
|
|
|
529 |
aMessage.WriteL(2, data);
|
|
|
530 |
|
|
|
531 |
//delete temporary buffer
|
|
|
532 |
CleanupStack::PopAndDestroy(&data);
|
|
|
533 |
|
|
|
534 |
aMessage.Complete(KErrNone);
|
|
|
535 |
}
|
|
|
536 |
|
|
|
537 |
/**
|
|
|
538 |
Writes memory to a specified thread using the passed parameters.
|
|
|
539 |
|
|
|
540 |
@param aMessage The RMessage2 object should be constructed as follows:
|
|
|
541 |
* aMessage.Ptr0() is the thread ID of the target debug app
|
|
|
542 |
* aMessage.Ptr1() is a TMemoryInfo object which contains the following:
|
|
|
543 |
* the address of the memory to be written to the target debug thread
|
|
|
544 |
* the size of the memory block to be written to the target debug thread
|
|
|
545 |
* the access size to use
|
|
|
546 |
* the endianess to interpret the data as
|
|
|
547 |
* aMessage.Ptr2() is the address of the buffer in the debug agent thread
|
|
|
548 |
that the data to write to the target debug app should be read from
|
|
|
549 |
|
|
|
550 |
@leave KErrPermissionDenied if client is not attached (actively) to the target
|
|
|
551 |
thread's process,
|
|
|
552 |
KErrNoMemory if memory could not be allocated,
|
|
|
553 |
KErrArgument if there are problems with the aMessage object,
|
|
|
554 |
KErrBadHandle if the thread represented by aMessage.Ptr0() is invalid,
|
|
|
555 |
an error value from CSecuritySvrSession::ValidateMemoryInfo if checking
|
|
|
556 |
the memory attributes failed,
|
|
|
557 |
or another of the system wide error codes
|
|
|
558 |
*/
|
|
|
559 |
void CSecuritySvrSession::WriteMemoryL(const RMessage2& aMessage)
|
|
|
560 |
{
|
|
|
561 |
LOG_MSG( "CSecuritySvrSession::WriteMemoryL()\n" );
|
|
|
562 |
|
|
|
563 |
//get debug app thread ID
|
|
|
564 |
TThreadId threadId = ReadTThreadIdL(aMessage, 0);
|
|
|
565 |
|
|
|
566 |
CheckAttachedL(threadId, aMessage, EFalse);
|
|
|
567 |
|
|
|
568 |
//create and initialise the memory info object
|
|
|
569 |
TMemoryInfo targetMemory;
|
|
|
570 |
TPtr8 targetMemoryPtr( (TUint8 *)&targetMemory, sizeof(TMemoryInfo) );
|
|
|
571 |
|
|
|
572 |
aMessage.ReadL(1,targetMemoryPtr);
|
|
|
573 |
|
|
|
574 |
//check memory info is acceptable
|
|
|
575 |
ValidateMemoryInfoL(threadId, targetMemory, EFalse);
|
|
|
576 |
|
|
|
577 |
//create temporary buffer and read data from client
|
|
|
578 |
RBuf8 data;
|
|
|
579 |
data.CreateL(targetMemory.iSize);
|
|
|
580 |
data.CleanupClosePushL();
|
|
|
581 |
|
|
|
582 |
aMessage.ReadL(2, data);
|
|
|
583 |
|
|
|
584 |
// what about telling the driver about endianess/access size?
|
|
|
585 |
User::LeaveIfError(Server().iKernelDriver.WriteMemory(threadId, targetMemory.iAddress, targetMemory.iSize, data));
|
|
|
586 |
|
|
|
587 |
//free temporary buffer
|
|
|
588 |
CleanupStack::PopAndDestroy(&data);
|
|
|
589 |
|
|
|
590 |
aMessage.Complete(KErrNone);
|
|
|
591 |
}
|
|
|
592 |
|
|
|
593 |
/**
|
|
|
594 |
|
|
|
595 |
Notes: This call is used to set a thread specific breakpoint. Its input arguments
|
|
|
596 |
are the thread id, address and architecture type of the breakpoint. It returns success
|
|
|
597 |
or failure, and if successful, it sets the TBreakId in the Debug Agent to the
|
|
|
598 |
breakpoint id by which it can be referenced in future calls to ModifyBreak,ClearBreak and
|
|
|
599 |
BreakInfo.
|
|
|
600 |
|
|
|
601 |
@param aMessage.Ptr0() - aThreadId is thread id of the target debug process
|
|
|
602 |
@param aMessage.Ptr1() - Address of a TBreakInfo in the Debug Agent
|
|
|
603 |
@param aMessage.Ptr2() - Address of a TBreakId in the Debug Agent
|
|
|
604 |
@leave KErrPermissionDenied if the security check fails.
|
|
|
605 |
KErrAlreadyExists if there is a breakpoint overlapping the desired address.
|
|
|
606 |
KErrNotSupported if the architecture type is unrecognised.
|
|
|
607 |
KErrNoMemory if there is no more memory to complete the operation.
|
|
|
608 |
KErrArgument if the breakpoint address alignment is unsuitable for the requested
|
|
|
609 |
breakpoint.
|
|
|
610 |
KErrOverflow if there are too many breakpoints set.
|
|
|
611 |
*/
|
|
|
612 |
void CSecuritySvrSession::SetBreakL(const RMessage2& aMessage)
|
|
|
613 |
{
|
|
|
614 |
LOG_MSG( "CSecuritySvrSession::SetBreakL!()\n" );
|
|
|
615 |
|
|
|
616 |
//get debug app thread ID
|
|
|
617 |
TThreadId threadId = ReadTThreadIdL(aMessage, 0);
|
|
|
618 |
|
|
|
619 |
//check that the agent has attached to the target process
|
|
|
620 |
CheckAttachedL(threadId, aMessage, EFalse);
|
|
|
621 |
|
|
|
622 |
//create and initialise the break info object
|
|
|
623 |
TBreakInfo breakInfo;
|
|
|
624 |
TPtr8 breakInfoPtr( (TUint8 *)&breakInfo, sizeof(TBreakInfo) );
|
|
|
625 |
|
|
|
626 |
aMessage.ReadL(1,breakInfoPtr);
|
|
|
627 |
|
|
|
628 |
LOG_MSG4( "CSecuritySvrSession::SetBreakL, threadId=0x%lx, addr=0x%x, mode=%d",
|
|
|
629 |
threadId.Id(), breakInfo.iAddress, breakInfo.iArchitectureMode);
|
|
|
630 |
|
|
|
631 |
//set break in target app
|
|
|
632 |
TBreakId breakId = 0;
|
|
|
633 |
User::LeaveIfError(Server().iKernelDriver.SetBreak(breakId, threadId, breakInfo.iAddress, breakInfo.iArchitectureMode));
|
|
|
634 |
|
|
|
635 |
//attempt to write the break id back to the debug agent
|
|
|
636 |
WriteDataL(aMessage, 2, &breakId, sizeof(breakId));
|
|
|
637 |
|
|
|
638 |
aMessage.Complete(KErrNone);
|
|
|
639 |
}
|
|
|
640 |
|
|
|
641 |
/**
|
|
|
642 |
Clears a breakpoint previously set by a SetBreak() call.
|
|
|
643 |
|
|
|
644 |
@param aMessage.Int0() - TBreakId of the breakpoint to be removed.
|
|
|
645 |
*/
|
|
|
646 |
void CSecuritySvrSession::ClearBreakL(const RMessage2& aMessage)
|
|
|
647 |
{
|
|
|
648 |
LOG_MSG( "CSecuritySvrSession::ClearBreakL()\n" );
|
|
|
649 |
|
|
|
650 |
const TInt breakId = aMessage.Int0();
|
|
|
651 |
|
|
|
652 |
// Check that the breakpoint exists
|
|
|
653 |
TUint64 objectId;
|
|
|
654 |
TUint32 address;
|
|
|
655 |
TArchitectureMode mode;
|
|
|
656 |
TBool threadSpecific = EFalse;
|
|
|
657 |
|
|
|
658 |
User::LeaveIfError(Server().iKernelDriver.BreakInfo(breakId,objectId,address,mode,threadSpecific));
|
|
|
659 |
|
|
|
660 |
if(threadSpecific)
|
|
|
661 |
{
|
|
|
662 |
// Check that the debug agent is attached to the thread for which the
|
|
|
663 |
// breakpoint is currently set.
|
|
|
664 |
LOG_MSG4( "CSecuritySvrSession::ClearBreakL( brkId=%d), addr=0x%x, tId=0x%x",
|
|
|
665 |
breakId, address, I64LOW(objectId) );
|
|
|
666 |
CheckAttachedL(TThreadId(objectId), aMessage, EFalse);
|
|
|
667 |
}
|
|
|
668 |
else
|
|
|
669 |
{
|
|
|
670 |
// Check that the debug agent is attached to the process for which the
|
|
|
671 |
// breakpoint is currently set.
|
|
|
672 |
LOG_MSG4( "CSecuritySvrSession::ClearBreakL( brkId=%d), addr=0x%x, pId=0x%x",
|
|
|
673 |
breakId, address, I64LOW(objectId) );
|
|
|
674 |
CheckAttachedL(TProcessId(objectId), aMessage, EFalse);
|
|
|
675 |
}
|
|
|
676 |
|
|
|
677 |
// Finally clear the breakpoint
|
|
|
678 |
User::LeaveIfError(Server().iKernelDriver.ClearBreak(breakId));
|
|
|
679 |
|
|
|
680 |
aMessage.Complete(KErrNone);
|
|
|
681 |
}
|
|
|
682 |
|
|
|
683 |
/**
|
|
|
684 |
@param aMessage.Int0() - Breakpoint Id of interest
|
|
|
685 |
@param aMessage.Ptr1() - Address in Debug Agent to place threadId of the breakpoint
|
|
|
686 |
@param aMessage.Ptr2() - Address in Debug Agent to place address of the breakpoint
|
|
|
687 |
@param aMessage.Ptr3() - Address in Debug Agent to place the architecture mode of the breakpoint
|
|
|
688 |
@leave Any error which may be returned by RSessionBase::SendReceive()
|
|
|
689 |
*/
|
|
|
690 |
void CSecuritySvrSession::BreakInfoL(const RMessage2& aMessage)
|
|
|
691 |
{
|
|
|
692 |
const TBreakId breakId = (TBreakId)aMessage.Int0();
|
|
|
693 |
|
|
|
694 |
TThreadId threadId;
|
|
|
695 |
TUint32 address;
|
|
|
696 |
TArchitectureMode mode;
|
|
|
697 |
TBool threadSpecific = ETrue;
|
|
|
698 |
|
|
|
699 |
TUint64 threadIdData;
|
|
|
700 |
User::LeaveIfError(Server().iKernelDriver.BreakInfo(breakId,threadIdData,address,mode,threadSpecific));
|
|
|
701 |
|
|
|
702 |
if(!threadSpecific)
|
|
|
703 |
{
|
|
|
704 |
User::Leave(KErrNotFound);
|
|
|
705 |
}
|
|
|
706 |
|
|
|
707 |
threadId = TThreadId(threadIdData);
|
|
|
708 |
|
|
|
709 |
//check that the agent has attached to the target process
|
|
|
710 |
CheckAttachedL(threadId, aMessage, EFalse);
|
|
|
711 |
|
|
|
712 |
// return the threadId
|
|
|
713 |
WriteDataL(aMessage, 1, &threadId, sizeof(threadId));
|
|
|
714 |
|
|
|
715 |
// return the address
|
|
|
716 |
WriteDataL(aMessage, 2, &address, sizeof(address));
|
|
|
717 |
|
|
|
718 |
// return the mode
|
|
|
719 |
WriteDataL(aMessage, 3, &mode, sizeof(mode));
|
|
|
720 |
|
|
|
721 |
aMessage.Complete(KErrNone);
|
|
|
722 |
}
|
|
|
723 |
|
|
|
724 |
/**
|
|
|
725 |
|
|
|
726 |
Modify a previously set breakpoint.
|
|
|
727 |
|
|
|
728 |
@param aMessage.Int0() - The breakpoint id of the breakpoint to modify
|
|
|
729 |
@param aMessage.Ptr1() - The new Thread Id for the breakpoint
|
|
|
730 |
@param aMessage.Int2() - The new virtual memory address for the breakpoint
|
|
|
731 |
@param aMessage.Int3() - The new architecture mode for the breakpoint
|
|
|
732 |
@return KErrNone if succesful. KErrPermissionDenied if the security check fails.
|
|
|
733 |
KErrAlreadyExists if there is a breakpoint overlapping the desired address.
|
|
|
734 |
KErrNotSupported if the architecture type is unrecognised.
|
|
|
735 |
KErrNoMemory if there is no more memory to complete the operation.
|
|
|
736 |
KErrArgument if the breakpoint address alignment is unsuitable for the requested
|
|
|
737 |
breakpoint.
|
|
|
738 |
KErrOverflow if there are too many breakpoints set.
|
|
|
739 |
*/
|
|
|
740 |
void CSecuritySvrSession::ModifyBreakL(const RMessage2& aMessage)
|
|
|
741 |
{
|
|
|
742 |
const TBreakId breakId = (TBreakId)aMessage.Int0();
|
|
|
743 |
const TThreadId threadId = ReadTThreadIdL(aMessage, 1);
|
|
|
744 |
const TUint32 address = aMessage.Int2();
|
|
|
745 |
const TArchitectureMode mode = (TArchitectureMode)aMessage.Int3();
|
|
|
746 |
|
|
|
747 |
// Get information on the breakpoint to check the security status
|
|
|
748 |
TUint64 checkThreadId;
|
|
|
749 |
TUint32 checkAddress;
|
|
|
750 |
TArchitectureMode checkMode;
|
|
|
751 |
TBool threadSpecific;
|
|
|
752 |
|
|
|
753 |
User::LeaveIfError(Server().iKernelDriver.BreakInfo(breakId,checkThreadId,checkAddress,checkMode,threadSpecific));
|
|
|
754 |
|
|
|
755 |
LOG_MSG4( "CSecuritySvrSession::ModifyBreakL(brkId=%d) tId=0x%x, addr=0x%x",
|
|
|
756 |
breakId, I64LOW(threadId.Id()), address );
|
|
|
757 |
|
|
|
758 |
// Security check that the thread Id is associated with the debug agent
|
|
|
759 |
|
|
|
760 |
//check that the agent has attached to the target process
|
|
|
761 |
CheckAttachedL(TThreadId(checkThreadId), aMessage, EFalse);
|
|
|
762 |
|
|
|
763 |
// now check that the thread Id which is being set is permitted
|
|
|
764 |
//check that the agent has attached to the target process
|
|
|
765 |
CheckAttachedL(threadId, aMessage, EFalse);
|
|
|
766 |
|
|
|
767 |
User::LeaveIfError(Server().iKernelDriver.ModifyBreak(breakId,threadId,address,mode));
|
|
|
768 |
|
|
|
769 |
aMessage.Complete(KErrNone);
|
|
|
770 |
}
|
|
|
771 |
|
|
|
772 |
/**
|
|
|
773 |
|
|
|
774 |
Notes: This call is used to set a process wide breakpoint. Its input arguments
|
|
|
775 |
are the process id, address and architecture type of the breakpoint. It returns success
|
|
|
776 |
or failure, and if successful, it sets the TBreakId in the Debug Agent to the
|
|
|
777 |
breakpoint id by which it can be referenced in future calls to ModifyBreak,ClearBreak and
|
|
|
778 |
BreakInfo.
|
|
|
779 |
|
|
|
780 |
@param aMessage.Ptr0() - aProcessId is process id of the target debug process
|
|
|
781 |
@param aMessage.Ptr1() - Address of a TBreakInfo in the Debug Agent
|
|
|
782 |
@param aMessage.Ptr2() - Address of a TBreakId in the Debug Agent
|
|
|
783 |
@leave KErrPermissionDenied if the security check fails.
|
|
|
784 |
KErrAlreadyExists if there is a breakpoint overlapping the desired address.
|
|
|
785 |
KErrNotSupported if the architecture type is unrecognised.
|
|
|
786 |
KErrNoMemory if there is no more memory to complete the operation.
|
|
|
787 |
KErrArgument if the breakpoint address alignment is unsuitable for the requested
|
|
|
788 |
breakpoint.
|
|
|
789 |
KErrOverflow if there are too many breakpoints set.
|
|
|
790 |
*/
|
|
|
791 |
void CSecuritySvrSession::SetProcessBreakL(const RMessage2& aMessage)
|
|
|
792 |
{
|
|
|
793 |
LOG_MSG( "CSecuritySvrSession::SetProcessBreakL()\n" );
|
|
|
794 |
|
|
|
795 |
//get debug app thread ID
|
|
|
796 |
TProcessId procId = ReadTProcessIdL(aMessage, 0);
|
|
|
797 |
|
|
|
798 |
//check that the agent has attached to the target process
|
|
|
799 |
CheckAttachedL(procId, aMessage, EFalse);
|
|
|
800 |
|
|
|
801 |
//create and initialise the memory info object
|
|
|
802 |
TBreakInfo breakInfo;
|
|
|
803 |
TPtr8 breakInfoPtr( (TUint8 *)&breakInfo, sizeof(TBreakInfo) );
|
|
|
804 |
|
|
|
805 |
aMessage.ReadL(1,breakInfoPtr);
|
|
|
806 |
|
|
|
807 |
LOG_MSG4( "CSecuritySvrSession::SetProcessBreakL pId=0x%x, addr=0x%x, mode=%d ",
|
|
|
808 |
I64LOW(procId.Id()), breakInfo.iAddress, breakInfo.iArchitectureMode );
|
|
|
809 |
|
|
|
810 |
//set break in target app
|
|
|
811 |
TBreakId breakId = 0;
|
|
|
812 |
User::LeaveIfError(Server().iKernelDriver.SetProcessBreak(breakId, procId, breakInfo.iAddress, breakInfo.iArchitectureMode));
|
|
|
813 |
|
|
|
814 |
//attempt to write the break id back to the debug agent
|
|
|
815 |
WriteDataL(aMessage, 2, &breakId, sizeof(breakId));
|
|
|
816 |
|
|
|
817 |
aMessage.Complete(KErrNone);
|
|
|
818 |
}
|
|
|
819 |
|
|
|
820 |
/**
|
|
|
821 |
|
|
|
822 |
Modify a previously set process breakpoint.
|
|
|
823 |
|
|
|
824 |
@param aMessage.Int0() - The breakpoint id of the breakpoint to modify
|
|
|
825 |
@param aMessage.Ptr1() - The new Process Id for the breakpoint
|
|
|
826 |
@param aMessage.Int2() - The new virtual memory address for the breakpoint
|
|
|
827 |
@param aMessage.Int3() - The new architecture mode for the breakpoint
|
|
|
828 |
@return KErrNone if succesful. KErrPermissionDenied if the security check fails.
|
|
|
829 |
KErrAlreadyExists if there is a breakpoint overlapping the desired address.
|
|
|
830 |
KErrNotSupported if the architecture type is unrecognised.
|
|
|
831 |
KErrNoMemory if there is no more memory to complete the operation.
|
|
|
832 |
KErrArgument if the breakpoint address alignment is unsuitable for the requested
|
|
|
833 |
breakpoint.
|
|
|
834 |
KErrOverflow if there are too many breakpoints set.
|
|
|
835 |
*/
|
|
|
836 |
void CSecuritySvrSession::ModifyProcessBreakL(const RMessage2& aMessage)
|
|
|
837 |
{
|
|
|
838 |
const TBreakId breakId = (TBreakId)aMessage.Int0();
|
|
|
839 |
const TProcessId processId = ReadTProcessIdL(aMessage, 1);
|
|
|
840 |
const TUint32 address = aMessage.Int2();
|
|
|
841 |
const TArchitectureMode mode = (TArchitectureMode)aMessage.Int3();
|
|
|
842 |
|
|
|
843 |
// Get information on the breakpoint to check the security status
|
|
|
844 |
TUint64 checkProcessId;
|
|
|
845 |
TUint32 checkAddress;
|
|
|
846 |
TArchitectureMode checkMode;
|
|
|
847 |
TBool threadSpecific;
|
|
|
848 |
|
|
|
849 |
User::LeaveIfError(Server().iKernelDriver.BreakInfo(breakId,checkProcessId,checkAddress,checkMode,threadSpecific));
|
|
|
850 |
|
|
|
851 |
LOG_MSG4( "CSecuritySvrSession::ModifyProcessBreakL(brkId=%d) pId=0x%x, addr=0x%x",
|
|
|
852 |
breakId, I64LOW(processId.Id()), address );
|
|
|
853 |
|
|
|
854 |
|
|
|
855 |
// Security check that the process Id is associated with the debug agent
|
|
|
856 |
|
|
|
857 |
//check that the agent has attached to the target process
|
|
|
858 |
CheckAttachedL(TProcessId(checkProcessId), aMessage, EFalse);
|
|
|
859 |
|
|
|
860 |
// now check that the process Id which is being set is permitted
|
|
|
861 |
//check that the agent has attached to the target process
|
|
|
862 |
CheckAttachedL(processId, aMessage, EFalse);
|
|
|
863 |
|
|
|
864 |
User::LeaveIfError(Server().iKernelDriver.ModifyProcessBreak(breakId,processId,address,mode));
|
|
|
865 |
|
|
|
866 |
aMessage.Complete(KErrNone);
|
|
|
867 |
}
|
|
|
868 |
|
|
|
869 |
/**
|
|
|
870 |
@param aMessage.Int0() - Breakpoint Id of interest
|
|
|
871 |
@param aMessage.Ptr1() - Address in Debug Agent to place process Id of the breakpoint
|
|
|
872 |
@param aMessage.Ptr2() - Address in Debug Agent to place address of the breakpoint
|
|
|
873 |
@param aMessage.Ptr3() - Address in Debug Agent to place the architecture mode of the breakpoint
|
|
|
874 |
@leave Any error which may be returned by RSessionBase::SendReceive()
|
|
|
875 |
*/
|
|
|
876 |
void CSecuritySvrSession::ProcessBreakInfoL(const RMessage2& aMessage)
|
|
|
877 |
{
|
|
|
878 |
const TBreakId breakId = (TBreakId)aMessage.Int0();
|
|
|
879 |
|
|
|
880 |
TProcessId procId;
|
|
|
881 |
TUint32 address;
|
|
|
882 |
TArchitectureMode mode;
|
|
|
883 |
TBool threadSpecific;
|
|
|
884 |
|
|
|
885 |
TUint64 procIdData;
|
|
|
886 |
User::LeaveIfError(Server().iKernelDriver.BreakInfo(breakId,procIdData,address,mode,threadSpecific));
|
|
|
887 |
if(threadSpecific)
|
|
|
888 |
{
|
|
|
889 |
User::Leave(KErrNotFound);
|
|
|
890 |
}
|
|
|
891 |
procId = TProcessId(procIdData);
|
|
|
892 |
|
|
|
893 |
//check that the agent has attached to the target process
|
|
|
894 |
CheckAttachedL(procId, aMessage, EFalse);
|
|
|
895 |
|
|
|
896 |
// return the processId
|
|
|
897 |
WriteDataL(aMessage, 1, &procId, sizeof(procId));
|
|
|
898 |
|
|
|
899 |
// return the address
|
|
|
900 |
WriteDataL(aMessage, 2, &address, sizeof(address));
|
|
|
901 |
|
|
|
902 |
// return the mode
|
|
|
903 |
WriteDataL(aMessage, 3, &mode, sizeof(mode));
|
|
|
904 |
|
|
|
905 |
aMessage.Complete(KErrNone);
|
|
|
906 |
}
|
|
|
907 |
|
|
|
908 |
/**
|
|
|
909 |
Read register values.
|
|
|
910 |
|
|
|
911 |
@param aMessage should contain:
|
|
|
912 |
* at offset 0 a pointer to the thread ID of the target thread
|
|
|
913 |
* at offset 1 a descriptor representing an array of TRegisterInfo
|
|
|
914 |
register IDs
|
|
|
915 |
* at offset 2 a descriptor representing an array into which TRegister
|
|
|
916 |
register values will be written
|
|
|
917 |
* at offset 3 a descriptor representing an array into which TUint8
|
|
|
918 |
register flags will be written
|
|
|
919 |
|
|
|
920 |
@leave KErrArgument if the max length of the array at offset 1 is not a
|
|
|
921 |
multiple of sizeof(TRegisterInfo), if the max length of the array
|
|
|
922 |
at offset 2 is not a multiple of sizeof(TRegister), if the max
|
|
|
923 |
length of the array at offset 3 is not a multiple of sizeof(TUint8), if
|
|
|
924 |
any of the descriptors have max length of 0, or if the three
|
|
|
925 |
descriptors do not represent the same number of registers,
|
|
|
926 |
KErrNoMemory if there is insufficient memory,
|
|
|
927 |
KErrDied, if the thread with thread ID aThreadId is dead
|
|
|
928 |
*/
|
|
|
929 |
void CSecuritySvrSession::ReadRegistersL(const RMessage2& aMessage)
|
|
|
930 |
{
|
|
|
931 |
LOG_MSG( "CSecuritySvrSession::ReadRegistersL()\n" );
|
|
|
932 |
|
|
|
933 |
const TThreadId threadId = ReadTThreadIdL(aMessage, 0);
|
|
|
934 |
|
|
|
935 |
//check the agent is attached to the thread
|
|
|
936 |
CheckAttachedL(threadId, aMessage, ETrue);
|
|
|
937 |
|
|
|
938 |
//number of registers being requested
|
|
|
939 |
TUint32 numberOfRegisters;
|
|
|
940 |
|
|
|
941 |
//check length of descriptors is acceptable
|
|
|
942 |
ValidateRegisterBuffersL(aMessage, numberOfRegisters);
|
|
|
943 |
|
|
|
944 |
// Passed data will be saved in this descriptor.
|
|
|
945 |
RBuf8 ids;
|
|
|
946 |
ids.CreateL(numberOfRegisters * sizeof(TRegisterInfo));
|
|
|
947 |
// Do the right cleanup if anything subsequently goes wrong
|
|
|
948 |
ids.CleanupClosePushL();
|
|
|
949 |
|
|
|
950 |
//read the data from the client thread
|
|
|
951 |
aMessage.ReadL(1, ids);
|
|
|
952 |
|
|
|
953 |
//create buffer to fill with data from target debug thread
|
|
|
954 |
HBufC8 *data = HBufC8::NewLC(aMessage.GetDesMaxLength(2));
|
|
|
955 |
TPtr8 values(data->Des());
|
|
|
956 |
|
|
|
957 |
HBufC8 *flagsData = HBufC8::NewLC(numberOfRegisters * sizeof(TUint8));
|
|
|
958 |
TPtr8 flags(flagsData->Des());
|
|
|
959 |
|
|
|
960 |
//get register info and return relevant parts back to agent
|
|
|
961 |
User::LeaveIfError(Server().iKernelDriver.ReadRegisters(threadId, ids, values, flags));
|
|
|
962 |
aMessage.WriteL(2, values);
|
|
|
963 |
aMessage.WriteL(3, flags);
|
|
|
964 |
|
|
|
965 |
//delete temporary buffers and return status
|
|
|
966 |
CleanupStack::PopAndDestroy(flagsData);
|
|
|
967 |
CleanupStack::PopAndDestroy(data);
|
|
|
968 |
CleanupStack::PopAndDestroy(&ids);
|
|
|
969 |
|
|
|
970 |
aMessage.Complete(KErrNone);
|
|
|
971 |
}
|
|
|
972 |
|
|
|
973 |
/**
|
|
|
974 |
Write register values.
|
|
|
975 |
|
|
|
976 |
@param aMessage should contain:
|
|
|
977 |
* at offset 0 a pointer to the thread ID of the target thread
|
|
|
978 |
* at offset 1 a descriptor representing an array of TRegisterInfo
|
|
|
979 |
register IDs
|
|
|
980 |
* at offset 2 a descriptor representing an array of TRegister register
|
|
|
981 |
values
|
|
|
982 |
* at offset 3 a descriptor representing an array into which TUint8
|
|
|
983 |
register flags will be written
|
|
|
984 |
|
|
|
985 |
@leave KErrArgument if the max length of the array at offset 1 is not a
|
|
|
986 |
multiple of sizeof(TRegisterInfo), if the max length of the array
|
|
|
987 |
at offset 2 is not a multiple of sizeof(TRegister), if the max
|
|
|
988 |
length of the array at offset 3 is not a multiple of sizeof(TUint8), if
|
|
|
989 |
any of the descriptors have max length of 0, or if the three
|
|
|
990 |
descriptors do not represent the same number of registers,
|
|
|
991 |
KErrNoMemory if there is insufficient memory,
|
|
|
992 |
KErrDied, if the thread with thread ID aThreadId is dead
|
|
|
993 |
*/
|
|
|
994 |
void CSecuritySvrSession::WriteRegistersL(const RMessage2& aMessage)
|
|
|
995 |
{
|
|
|
996 |
LOG_MSG( "CSecuritySvrSession::WriteRegistersL()\n" );
|
|
|
997 |
|
|
|
998 |
const TThreadId threadId = ReadTThreadIdL(aMessage, 0);
|
|
|
999 |
|
|
|
1000 |
CheckAttachedL(threadId, aMessage, EFalse);
|
|
|
1001 |
|
|
|
1002 |
//number of registers attempting to set
|
|
|
1003 |
TUint32 numberOfRegisters;
|
|
|
1004 |
|
|
|
1005 |
//check length of descriptors is acceptable
|
|
|
1006 |
ValidateRegisterBuffersL(aMessage, numberOfRegisters);
|
|
|
1007 |
|
|
|
1008 |
// Passed register ids will be saved in this descriptor.
|
|
|
1009 |
RBuf8 ids;
|
|
|
1010 |
|
|
|
1011 |
//allocate buffer
|
|
|
1012 |
ids.CreateL(numberOfRegisters * sizeof(TRegisterInfo));
|
|
|
1013 |
|
|
|
1014 |
// Do the right cleanup if anything subsequently goes wrong
|
|
|
1015 |
ids.CleanupClosePushL();
|
|
|
1016 |
|
|
|
1017 |
//read the data from the client thread
|
|
|
1018 |
aMessage.ReadL(1, ids);
|
|
|
1019 |
|
|
|
1020 |
// Passed register values will be saved in this descriptor.
|
|
|
1021 |
RBuf8 values;
|
|
|
1022 |
|
|
|
1023 |
//allocate buffer
|
|
|
1024 |
values.CreateL(aMessage.GetDesMaxLength(2));
|
|
|
1025 |
// Do the right cleanup if anything subsequently goes wrong
|
|
|
1026 |
values.CleanupClosePushL();
|
|
|
1027 |
//read the data from the client thread
|
|
|
1028 |
aMessage.ReadL(2,values);
|
|
|
1029 |
|
|
|
1030 |
HBufC8 *flagsData = HBufC8::NewLC(numberOfRegisters*sizeof(TUint8));
|
|
|
1031 |
TPtr8 flags(flagsData->Des());
|
|
|
1032 |
|
|
|
1033 |
//get register info and return relevant parts back to agent
|
|
|
1034 |
User::LeaveIfError(Server().iKernelDriver.WriteRegisters(threadId, ids, values, flags));
|
|
|
1035 |
|
|
|
1036 |
//write flags data back
|
|
|
1037 |
aMessage.WriteL(3, flags);
|
|
|
1038 |
|
|
|
1039 |
CleanupStack::PopAndDestroy(flagsData);
|
|
|
1040 |
CleanupStack::PopAndDestroy(&values);
|
|
|
1041 |
CleanupStack::PopAndDestroy(&ids);
|
|
|
1042 |
|
|
|
1043 |
aMessage.Complete(KErrNone);
|
|
|
1044 |
}
|
|
|
1045 |
|
|
|
1046 |
/**
|
|
|
1047 |
Processes an attach request from a debug agent. Gets the target debug
|
|
|
1048 |
processes' original FileName as an argument. The method sets completion
|
|
|
1049 |
status of the aMessage argument to KErrNone if successfully attached and to
|
|
|
1050 |
another of the system wide error codes if there were problems.
|
|
|
1051 |
|
|
|
1052 |
@param aMessage contains:
|
|
|
1053 |
* a boolean at offset 0 which indicates whether the agent wishes to
|
|
|
1054 |
attach passively
|
|
|
1055 |
* a buffer at offset 1 which contains the FileName
|
|
|
1056 |
of the target debug process.
|
|
|
1057 |
*/
|
|
|
1058 |
void CSecuritySvrSession::AttachProcessL(const RMessage2& aMessage)
|
|
|
1059 |
{
|
|
|
1060 |
LOG_MSG( "CSecuritySvrSession::AttachProcessL()\n" );
|
|
|
1061 |
|
|
|
1062 |
const TBool passive = aMessage.Int0();
|
|
|
1063 |
|
|
|
1064 |
TInt deslen = aMessage.GetDesLengthL(1);
|
|
|
1065 |
|
|
|
1066 |
// Passed data will be saved in this descriptor.
|
|
|
1067 |
RBuf processName;
|
|
|
1068 |
|
|
|
1069 |
// Max length set to the value of "deslen", but current length is zero
|
|
|
1070 |
processName.CreateL(deslen);
|
|
|
1071 |
|
|
|
1072 |
// Do the right cleanup if anything subsequently goes wrong
|
|
|
1073 |
processName.CleanupClosePushL();
|
|
|
1074 |
|
|
|
1075 |
// Copy the client's descriptor data into our buffer.
|
|
|
1076 |
aMessage.ReadL(1,processName);
|
|
|
1077 |
|
|
|
1078 |
//
|
|
|
1079 |
// Security Check
|
|
|
1080 |
//
|
|
|
1081 |
// It is not permitted to debug the debug security server!
|
|
|
1082 |
//
|
|
|
1083 |
// get the secure id of the executable
|
|
|
1084 |
TUid secureId(TUid::Null());
|
|
|
1085 |
GetSecureIdL(processName, secureId);
|
|
|
1086 |
if (KUidDebugSecurityServer.iUid == secureId.iUid)
|
|
|
1087 |
{
|
|
|
1088 |
// The debug agent has requested to debug the Debug Security Server
|
|
|
1089 |
// This is either an error, or an attempt to breach security. We
|
|
|
1090 |
// therefore refuse to agree to this request, and return KErrPermissionDenied
|
|
|
1091 |
LOG_MSG("Debug Agent attempted to debug the Debug Security Server");
|
|
|
1092 |
User::Leave(KErrPermissionDenied);
|
|
|
1093 |
}
|
|
|
1094 |
|
|
|
1095 |
// Check the OEM Debug token capabilities
|
|
|
1096 |
GetDebugAgentOEMTokenCapsL();
|
|
|
1097 |
|
|
|
1098 |
// Get the Security info via rlibrary::getinfo
|
|
|
1099 |
RLibrary::TInfo info;
|
|
|
1100 |
TPckg<RLibrary::TInfo> infoBuf(info);
|
|
|
1101 |
|
|
|
1102 |
TInt err = RLibrary::GetInfo(processName, infoBuf);
|
|
|
1103 |
if (err != KErrNone)
|
|
|
1104 |
{
|
|
|
1105 |
LOG_MSG2("Cannot parse the target executable header, err=%d", err);
|
|
|
1106 |
// Could not read the header for this executable :-(
|
|
|
1107 |
CleanupStack::PopAndDestroy(&processName);
|
|
|
1108 |
aMessage.Complete(err);
|
|
|
1109 |
return;
|
|
|
1110 |
}
|
|
|
1111 |
|
|
|
1112 |
// Special case for AllFiles - OEM Debug tokens MUST have
|
|
|
1113 |
// AllFiles, as this is what allows them to read contents
|
|
|
1114 |
// of other executables.
|
|
|
1115 |
TBool checkDebuggable = ETrue;
|
|
|
1116 |
|
|
|
1117 |
// Does an OEM Debug Token permit debug where it would normally not be
|
|
|
1118 |
// permitted?
|
|
|
1119 |
if ( Server().OEMTokenPermitsDebugL(iOEMDebugCapabilities, info.iSecurityInfo.iCaps) )
|
|
|
1120 |
{
|
|
|
1121 |
// OEM Debug token is valid and has sufficient capabilities
|
|
|
1122 |
LOG_MSG("CSecuritySvrSession::AttachProcessL() - Debug Agent has sufficient capabilites based on OEM Debug Token");
|
|
|
1123 |
|
|
|
1124 |
checkDebuggable = EFalse;
|
|
|
1125 |
}
|
|
|
1126 |
|
|
|
1127 |
if (checkDebuggable)
|
|
|
1128 |
{
|
|
|
1129 |
// OEM Debug token (if any), does not confer sufficient capabilities to
|
|
|
1130 |
// debug the specified target executable. Therefore debugging can only
|
|
|
1131 |
// be permitted if the target executable itself has been built as 'Debuggable'
|
|
|
1132 |
LOG_MSG("CSecuritySvrSession::AttachProcessL() - Debug Agent has insufficient capabilites based on OEM Debug Token");
|
|
|
1133 |
|
|
|
1134 |
IsDebuggableL(processName);
|
|
|
1135 |
}
|
|
|
1136 |
|
|
|
1137 |
User::LeaveIfError(Server().AttachProcessL(processName, iDebugAgentProcessId, passive));
|
|
|
1138 |
|
|
|
1139 |
// Inform the kernel driver about the attachment, so that it
|
|
|
1140 |
// can track per-agent data about the process.
|
|
|
1141 |
RBuf8 processName8;
|
|
|
1142 |
|
|
|
1143 |
processName8.CreateL(deslen);
|
|
|
1144 |
|
|
|
1145 |
processName8.CleanupClosePushL();
|
|
|
1146 |
|
|
|
1147 |
processName8.Copy(processName);
|
|
|
1148 |
|
|
|
1149 |
User::LeaveIfError(Server().iKernelDriver.AttachProcess(processName8, iDebugAgentProcessId.Id()));
|
|
|
1150 |
|
|
|
1151 |
// Create an Active Object to handle asynchronous calls to GetEvent
|
|
|
1152 |
CSecuritySvrAsync* handler = CSecuritySvrAsync::NewL(this,processName8,iDebugAgentProcessId);
|
|
|
1153 |
|
|
|
1154 |
err = iAsyncHandlers.Insert(handler,0);
|
|
|
1155 |
if (err != KErrNone)
|
|
|
1156 |
{
|
|
|
1157 |
// If we don't have an asynchronous handler, we should detach
|
|
|
1158 |
// the driver as well.
|
|
|
1159 |
Server().iKernelDriver.DetachProcess(processName8,iDebugAgentProcessId.Id());
|
|
|
1160 |
Server().DetachProcess(processName, iDebugAgentProcessId);
|
|
|
1161 |
// The DSS should NEVER panic itself. If the above calls fail, so be it we will attempt to limp on
|
|
|
1162 |
}
|
|
|
1163 |
|
|
|
1164 |
User::LeaveIfError(err);
|
|
|
1165 |
|
|
|
1166 |
CleanupStack::PopAndDestroy(&processName8);
|
|
|
1167 |
|
|
|
1168 |
CleanupStack::PopAndDestroy(&processName);
|
|
|
1169 |
|
|
|
1170 |
aMessage.Complete(KErrNone);
|
|
|
1171 |
}
|
|
|
1172 |
|
|
|
1173 |
|
|
|
1174 |
/**
|
|
|
1175 |
Processes an attach request from a debug agent from all processes.
|
|
|
1176 |
The method sets completion status of the aMessage argument to KErrNone
|
|
|
1177 |
if successfully attached and to another of the system wide error codes
|
|
|
1178 |
if there were problems.
|
|
|
1179 |
|
|
|
1180 |
@param aMessage contains no data
|
|
|
1181 |
*/
|
|
|
1182 |
void CSecuritySvrSession::AttachAllL(const RMessage2& aMessage)
|
|
|
1183 |
{
|
|
|
1184 |
LOG_MSG( "CSecuritySvrSession::AttachAllL()\n" );
|
|
|
1185 |
|
|
|
1186 |
|
|
|
1187 |
// Run the OEM Debug token, if run ok then sets iOEMDebugCapabilities
|
|
|
1188 |
GetDebugAgentOEMTokenCapsL();
|
|
|
1189 |
|
|
|
1190 |
// Debug token must have All caps to use AttachToAll
|
|
|
1191 |
TCapabilitySet allCaps;
|
|
|
1192 |
allCaps.SetAllSupported();
|
|
|
1193 |
if (!Server().OEMTokenPermitsDebugL(iOEMDebugCapabilities, allCaps))
|
|
|
1194 |
{
|
|
|
1195 |
LOG_MSG("Client's OEM token doesn't have capability ALL required for AttachAll()");
|
|
|
1196 |
User::Leave(KErrPermissionDenied);
|
|
|
1197 |
}
|
|
|
1198 |
|
|
|
1199 |
|
|
|
1200 |
User::LeaveIfError(Server().AttachProcessL(_L("*"), iDebugAgentProcessId, EFalse));
|
|
|
1201 |
|
|
|
1202 |
TBuf8<1> KStar8=_L8("*");
|
|
|
1203 |
|
|
|
1204 |
User::LeaveIfError(Server().iKernelDriver.AttachProcess(KStar8, iDebugAgentProcessId.Id()));
|
|
|
1205 |
|
|
|
1206 |
// Create an Active Object to handle asynchronous calls to GetAllEvent
|
|
|
1207 |
CSecuritySvrAsync* handler = CSecuritySvrAsync::NewL(this,KStar8,iDebugAgentProcessId);
|
|
|
1208 |
TInt err = iAsyncHandlers.Insert(handler,0);
|
|
|
1209 |
if (err != KErrNone)
|
|
|
1210 |
{
|
|
|
1211 |
// If we don't have an asynchronous handler, we should detach
|
|
|
1212 |
// the driver as well.
|
|
|
1213 |
Server().iKernelDriver.DetachProcess(KStar8,iDebugAgentProcessId.Id());
|
|
|
1214 |
Server().DetachProcess(_L("*"), iDebugAgentProcessId);
|
|
|
1215 |
}
|
|
|
1216 |
|
|
|
1217 |
User::LeaveIfError(err);
|
|
|
1218 |
|
|
|
1219 |
aMessage.Complete(KErrNone);
|
|
|
1220 |
}
|
|
|
1221 |
|
|
|
1222 |
|
|
|
1223 |
/**
|
|
|
1224 |
Reads the OEM Debug Token associated with the debug agent if any. The OEM Debug Token
|
|
|
1225 |
allows the Debug Agent to debug certain executables which have not been built as
|
|
|
1226 |
'Debuggable'.
|
|
|
1227 |
|
|
|
1228 |
This works as follows: The OEM Debug Token is an executable with a special name
|
|
|
1229 |
of the form "OEMDebug_<DA_SID>.exe" where <DA_SID> is the Secure ID of the Debug Agent
|
|
|
1230 |
in hexadecimal. For example: "OEMDebug_F123ABCD.exe" would be a valid name. This token executable
|
|
|
1231 |
must be signed with 'AllFiles' + X, where X is the set of PlatSec capabilities that are
|
|
|
1232 |
possessed by the target executable to be debugged.
|
|
|
1233 |
|
|
|
1234 |
This function reads the capabilities possessed by the token by creating a process based
|
|
|
1235 |
on the executable, and reading the TSecurityInfo associated with the process. This ensures
|
|
|
1236 |
that the loader has validated the token has not been tampered with and that the security
|
|
|
1237 |
information is valid.
|
|
|
1238 |
|
|
|
1239 |
The security information is then stored for future use as member data in iOEMDebugCapabilities.
|
|
|
1240 |
|
|
|
1241 |
Leaves if there is an error, otherwise simply fills in the capabilities
|
|
|
1242 |
in iOEMDebugCapabilities.
|
|
|
1243 |
|
|
|
1244 |
It is not an error for the OEM Debug token not to exist. In this case, the function simply returns.
|
|
|
1245 |
*/
|
|
|
1246 |
void CSecuritySvrSession::GetDebugAgentOEMTokenCapsL(void)
|
|
|
1247 |
{
|
|
|
1248 |
if (iOEMDebugCapabilities.HasCapability(ECapabilityAllFiles))
|
|
|
1249 |
{
|
|
|
1250 |
// Then we've already read the caps - wasteful to read them again
|
|
|
1251 |
return;
|
|
|
1252 |
}
|
|
|
1253 |
|
|
|
1254 |
// Obtain the security info about the debug agent process
|
|
|
1255 |
//get the debug agent's process
|
|
|
1256 |
RProcess debugAgentProcess;
|
|
|
1257 |
|
|
|
1258 |
CleanupClosePushL(debugAgentProcess);
|
|
|
1259 |
|
|
56
|
1260 |
User::LeaveIfError(debugAgentProcess.Open(iDebugAgentProcessId));
|
|
42
|
1261 |
|
|
|
1262 |
// We have now obtained a process handle based on the token executable, so we can check its security properties.
|
|
|
1263 |
TSecurityInfo secInfo(debugAgentProcess);
|
|
|
1264 |
|
|
|
1265 |
// Compute the name of the OEM debug token based on the SID of the debug agent
|
|
|
1266 |
_LIT(KDSSOEMDebugTokenPrefix,"OEMDebug_");
|
|
|
1267 |
_LIT(KDSSOEMDebugTokenAppendFmt,"%08X.exe");
|
|
|
1268 |
|
|
|
1269 |
RBuf agentTokenName;
|
|
|
1270 |
agentTokenName.CreateL(KDSSOEMDebugTokenPrefix().Size()+8+1); // allow space for SID+null terminator
|
|
|
1271 |
agentTokenName.CleanupClosePushL();
|
|
|
1272 |
|
|
|
1273 |
agentTokenName.SetLength(0);
|
|
|
1274 |
|
|
|
1275 |
// Add OEMDebug_
|
|
|
1276 |
agentTokenName.Append(KDSSOEMDebugTokenPrefix());
|
|
|
1277 |
|
|
|
1278 |
// Add debug agent Secure ID
|
|
|
1279 |
agentTokenName.AppendFormat(KDSSOEMDebugTokenAppendFmt,secInfo.iSecureId.iId);
|
|
|
1280 |
|
|
|
1281 |
// just log the token name for the moment.
|
|
|
1282 |
RBuf8 agentTokenName8;
|
|
|
1283 |
|
|
|
1284 |
agentTokenName8.CreateL(agentTokenName.Length()+1);
|
|
|
1285 |
|
|
|
1286 |
agentTokenName8.CleanupClosePushL();
|
|
|
1287 |
|
|
|
1288 |
agentTokenName8.Copy(agentTokenName);
|
|
|
1289 |
|
|
|
1290 |
agentTokenName8.Append(TChar(0));
|
|
|
1291 |
|
|
|
1292 |
LOG_MSG2("CSecuritySvrSession::GetDebugAgentOEMTokenCapsL() - OEM Debug Token Name is %s",agentTokenName8.Ptr());
|
|
|
1293 |
|
|
|
1294 |
// Cleanup
|
|
|
1295 |
CleanupStack::PopAndDestroy(&agentTokenName8);
|
|
|
1296 |
|
|
|
1297 |
// Now locate and start the executable...
|
|
|
1298 |
RProcess agentToken;
|
|
|
1299 |
TInt err = agentToken.Create(agentTokenName, KNullDesC);
|
|
|
1300 |
if (KErrNone != err)
|
|
|
1301 |
{
|
|
|
1302 |
// Failed to create a process based on the token, just give up
|
|
|
1303 |
LOG_MSG2("CSecuritySvrSession::GetDebugAgentOEMTokenCapsL() - Could not create process based on token due to err 0x%8x\n",err);
|
|
|
1304 |
|
|
|
1305 |
// Cleanup remaining items from the stack
|
|
|
1306 |
CleanupStack::PopAndDestroy(&agentTokenName);
|
|
|
1307 |
|
|
|
1308 |
CleanupStack::PopAndDestroy(&debugAgentProcess);
|
|
|
1309 |
return;
|
|
|
1310 |
}
|
|
|
1311 |
|
|
|
1312 |
// Synchronise with the process to make sure it hasn't died straight away
|
|
|
1313 |
TRequestStatus stat;
|
|
|
1314 |
agentToken.Rendezvous(stat);
|
|
|
1315 |
if (stat != KRequestPending)
|
|
|
1316 |
{
|
|
|
1317 |
// logon failed - agentToken is not yet running, so cannot have terminated
|
|
|
1318 |
agentToken.Kill(0); // Abort startup
|
|
|
1319 |
}
|
|
|
1320 |
|
|
|
1321 |
// store the OEM Debug Token security data
|
|
|
1322 |
TSecurityInfo agentSecInfo(agentToken);
|
|
|
1323 |
|
|
|
1324 |
// Note capabilities for future use
|
|
|
1325 |
iOEMDebugCapabilities=agentSecInfo.iCaps;
|
|
|
1326 |
|
|
|
1327 |
// resume the token. It _should_ just exit, but we don't really care.
|
|
|
1328 |
agentToken.Resume();
|
|
|
1329 |
|
|
|
1330 |
// Wait to synchronise with agentToken - if it dies in the meantime, it
|
|
|
1331 |
// also gets completed
|
|
|
1332 |
User::WaitForRequest(stat);
|
|
|
1333 |
|
|
|
1334 |
// Just close the handle to it again.
|
|
|
1335 |
agentToken.Close();
|
|
|
1336 |
|
|
|
1337 |
// Cleanup remaining items from the stack
|
|
|
1338 |
CleanupStack::PopAndDestroy(&agentTokenName);
|
|
|
1339 |
|
|
|
1340 |
CleanupStack::PopAndDestroy(&debugAgentProcess);
|
|
|
1341 |
|
|
|
1342 |
}
|
|
|
1343 |
|
|
|
1344 |
/**
|
|
|
1345 |
Checks whether the file passed in as aExecutable is XIP or not
|
|
|
1346 |
|
|
|
1347 |
@param aExecutable file to check
|
|
|
1348 |
@return ETrue if the file is XIP, EFalse otherwise
|
|
|
1349 |
*/
|
|
|
1350 |
TBool CSecuritySvrSession::IsExecutableXipL(RFile& aExecutable)
|
|
|
1351 |
{
|
|
|
1352 |
TUint atts;
|
|
|
1353 |
User::LeaveIfError(aExecutable.Att(atts));
|
|
|
1354 |
|
|
|
1355 |
return atts & KEntryAttXIP;
|
|
|
1356 |
}
|
|
|
1357 |
|
|
|
1358 |
/**
|
|
|
1359 |
Gets access to the symbian crash partition for crash access operation.
|
|
|
1360 |
*/
|
|
|
1361 |
void CSecuritySvrSession::ConnectCrashPartitionL (void)
|
|
|
1362 |
{
|
|
|
1363 |
LOG_MSG("CSecuritySvrSession::ConnectCrashPartitionL()");
|
|
|
1364 |
|
|
|
1365 |
TBool changed;
|
|
|
1366 |
TInt error = KErrNone;
|
|
|
1367 |
TInt i=0;
|
|
|
1368 |
|
|
|
1369 |
//Intialising to EFalse
|
|
|
1370 |
iCrashConnected = EFalse;
|
|
|
1371 |
|
|
|
1372 |
TPckg<TLocalDriveCapsV2> capsBuf(iCaps);
|
|
|
1373 |
|
|
|
1374 |
//check for the symbian crash partition
|
|
|
1375 |
for (i=0; i<KMaxLocalDrives; i++)
|
|
|
1376 |
{
|
|
|
1377 |
error = iLocalDrive.Connect (i, changed);
|
|
|
1378 |
if ( error == KErrNone)
|
|
|
1379 |
{
|
|
|
1380 |
error = iLocalDrive.Caps(capsBuf);
|
|
|
1381 |
if ( error != KErrNone)
|
|
|
1382 |
{
|
|
|
1383 |
//continue if not found
|
|
|
1384 |
continue;
|
|
|
1385 |
}
|
|
|
1386 |
if ( iCaps.iPartitionType == (TUint16)KPartitionTypeSymbianCrashLog)
|
|
|
1387 |
{
|
|
|
1388 |
LOG_MSG2("Found Symbian crash log partition on drive: %d",i);
|
|
|
1389 |
iCrashConnected = ETrue;
|
|
|
1390 |
break;
|
|
|
1391 |
}
|
|
|
1392 |
}
|
|
|
1393 |
}
|
|
|
1394 |
if ( i == KMaxLocalDrives)
|
|
|
1395 |
{
|
|
|
1396 |
LOG_MSG("No crash log partition found with valid crash log signature found. Exiting...");
|
|
|
1397 |
User::Leave (KErrNotFound);
|
|
|
1398 |
}
|
|
|
1399 |
|
|
|
1400 |
// Nand Flash not currently supported.
|
|
|
1401 |
if (iCaps.iType == EMediaNANDFlash)
|
|
|
1402 |
{
|
|
|
1403 |
LOG_MSG( "CSecuritySvrSession::ConnectCrashPartitionL() Nand Flash not currently supported\n" );
|
|
|
1404 |
User::Leave (KErrNotSupported);
|
|
|
1405 |
}
|
|
|
1406 |
}
|
|
|
1407 |
/** Checks that aHeaderData contains enough data to cast it to the
|
|
|
1408 |
appropriate header type.
|
|
|
1409 |
|
|
|
1410 |
@param aHeaderData buffer containing header data read from a file
|
|
|
1411 |
@param aXip boolean indicating whether the header data is for an XIP image
|
|
|
1412 |
|
|
|
1413 |
@return ETrue if enough data in buffer, EFalse otherwise
|
|
|
1414 |
*/
|
|
|
1415 |
TBool CSecuritySvrSession::CheckSufficientData(const TDesC8& aHeaderData, const TBool aXip) const
|
|
|
1416 |
{
|
|
|
1417 |
TUint minimumHeaderSize = aXip ? sizeof(TRomImageHeader) : sizeof(E32ImageHeaderV);
|
|
|
1418 |
return (aHeaderData.Length() >= minimumHeaderSize);
|
|
|
1419 |
}
|
|
|
1420 |
|
|
|
1421 |
/**
|
|
|
1422 |
Opens a file handle to aFileName using aFileHandle
|
|
|
1423 |
@param aFileName file to open handle to
|
|
|
1424 |
@param aFs file system to use to open the handle
|
|
|
1425 |
@param aFileHandle file handle to open
|
|
|
1426 |
|
|
|
1427 |
@leave one of the system wide error codes
|
|
|
1428 |
*/
|
|
|
1429 |
void CSecuritySvrSession::OpenFileHandleL(const TDesC& aFileName, RFs& aFs, RFile& aFileHandle)
|
|
|
1430 |
{
|
|
|
1431 |
TInt err = aFileHandle.Open(aFs, aFileName, EFileRead | EFileShareReadersOnly);
|
|
|
1432 |
if (err != KErrNone)
|
|
|
1433 |
{
|
|
|
1434 |
// Could not open the file for reading
|
|
|
1435 |
LOG_MSG("CSecuritySvrSession::OpenFileHandleL - Failed to open executable\n");
|
|
|
1436 |
|
|
|
1437 |
User::Leave(err);
|
|
|
1438 |
}
|
|
|
1439 |
}
|
|
|
1440 |
|
|
|
1441 |
/**
|
|
|
1442 |
Checks whether an executable has the debug bit set
|
|
|
1443 |
|
|
|
1444 |
@param aHeaderData buffer containing the header of the executable
|
|
|
1445 |
@param aXip indication of whether the executable is XIP or not
|
|
|
1446 |
|
|
|
1447 |
@return ETrue if debug bit is set, EFalse otherwise
|
|
|
1448 |
*/
|
|
|
1449 |
TBool CSecuritySvrSession::IsDebugBitSet(const TDesC8& aHeaderData, const TBool aXip)
|
|
|
1450 |
{
|
|
|
1451 |
if(!CheckSufficientData(aHeaderData, aXip))
|
|
|
1452 |
{
|
|
|
1453 |
return EFalse;
|
|
|
1454 |
}
|
|
|
1455 |
|
|
|
1456 |
if (aXip)
|
|
|
1457 |
{
|
|
|
1458 |
TRomImageHeader* hdr = (TRomImageHeader*)aHeaderData.Ptr();
|
|
|
1459 |
return (hdr->iFlags & KRomImageDebuggable);
|
|
|
1460 |
}
|
|
|
1461 |
else
|
|
|
1462 |
{
|
|
|
1463 |
// it is an epoc32 image
|
|
|
1464 |
E32ImageHeaderV* hdr = (E32ImageHeaderV*)aHeaderData.Ptr();
|
|
|
1465 |
return (hdr->iFlags & KImageDebuggable);
|
|
|
1466 |
}
|
|
|
1467 |
}
|
|
|
1468 |
|
|
|
1469 |
/**
|
|
|
1470 |
Determines whether a particular executable is marked as 'debuggable'
|
|
|
1471 |
|
|
|
1472 |
Notes:
|
|
|
1473 |
This function is currently hard coded to understand the format of e32 and
|
|
|
1474 |
TRomImage file headers. Ideally this will be replaced by a call to RLibrary::GetInfo
|
|
|
1475 |
which can return the 'debuggable' information. Unfortunately, this call currently
|
|
|
1476 |
does not provide the information for XIP executables :-(
|
|
|
1477 |
|
|
|
1478 |
@leave KErrPermissionDenied if the debug bit is not set, or one of the other
|
|
|
1479 |
system wide error codes
|
|
|
1480 |
*/
|
|
|
1481 |
void CSecuritySvrSession::IsDebuggableL(const TDesC& aFileName)
|
|
|
1482 |
{
|
|
|
1483 |
#ifndef IGNORE_DEBUGGABLE_BIT
|
|
|
1484 |
|
|
|
1485 |
RFs fs;
|
|
|
1486 |
User::LeaveIfError(fs.Connect());
|
|
|
1487 |
CleanupClosePushL(fs);
|
|
|
1488 |
|
|
|
1489 |
RFile targetExe;
|
|
|
1490 |
OpenFileHandleL(aFileName, fs, targetExe);
|
|
|
1491 |
CleanupClosePushL(targetExe);
|
|
|
1492 |
|
|
|
1493 |
// Read in the entire header
|
|
|
1494 |
RBuf8 e32HdrBuf;
|
|
|
1495 |
e32HdrBuf.CreateL(RLibrary::KRequiredImageHeaderSize);
|
|
|
1496 |
e32HdrBuf.CleanupClosePushL();
|
|
|
1497 |
|
|
|
1498 |
// Read the entire header as far as possible
|
|
|
1499 |
TInt err = targetExe.Read(e32HdrBuf);
|
|
|
1500 |
if (err != KErrNone)
|
|
|
1501 |
{
|
|
|
1502 |
// Could not read the file
|
|
|
1503 |
LOG_MSG("CSecuritySvrSession::IsDebuggableL - Failed to read executable\n");
|
|
|
1504 |
|
|
|
1505 |
User::Leave(err);
|
|
|
1506 |
}
|
|
|
1507 |
|
|
|
1508 |
if(!CheckSufficientData(e32HdrBuf, IsExecutableXipL(targetExe)))
|
|
|
1509 |
{
|
|
|
1510 |
User::Leave(KErrGeneral);
|
|
|
1511 |
}
|
|
|
1512 |
|
|
|
1513 |
if(! IsDebugBitSet(e32HdrBuf, IsExecutableXipL(targetExe)))
|
|
|
1514 |
{
|
|
|
1515 |
User::Leave(KErrPermissionDenied);
|
|
|
1516 |
}
|
|
|
1517 |
CleanupStack::PopAndDestroy(3, &fs);
|
|
|
1518 |
|
|
|
1519 |
#else
|
|
|
1520 |
LOG_MSG("CSecuritySvrSession::IsDebuggableL() Debuggable bit temporarily ignored!!!");
|
|
|
1521 |
#endif
|
|
|
1522 |
}
|
|
|
1523 |
|
|
|
1524 |
/**
|
|
|
1525 |
Processes a detach request from a debug agent. Gets the target debug
|
|
|
1526 |
processes' original FileName as an argument. The method sets completion
|
|
|
1527 |
status of the aMessage argument to KErrNone if successfully detached and to
|
|
|
1528 |
another of the system wide error codes if there were problems.
|
|
|
1529 |
|
|
|
1530 |
@param aMessage contains:
|
|
|
1531 |
* a buffer at offset 0 which contains the FileName
|
|
|
1532 |
of the target debug process.
|
|
|
1533 |
*/
|
|
|
1534 |
void CSecuritySvrSession::DetachProcessL(const RMessage2& aMessage)
|
|
|
1535 |
{
|
|
|
1536 |
LOG_MSG( "CSecuritySvrSession::DetachProcessL()\n" );
|
|
|
1537 |
|
|
|
1538 |
TInt deslen = aMessage.GetDesLengthL(0);
|
|
|
1539 |
// Passed data will be saved in this descriptor.
|
|
|
1540 |
RBuf processName;
|
|
|
1541 |
|
|
|
1542 |
// Max length set to the value of "deslen", but current length is zero
|
|
|
1543 |
processName.CreateL(deslen);
|
|
|
1544 |
|
|
|
1545 |
// Do the right cleanup if anything subsequently goes wrong
|
|
|
1546 |
processName.CleanupClosePushL();
|
|
|
1547 |
|
|
|
1548 |
// Copy the client's descriptor data into our buffer.
|
|
|
1549 |
aMessage.ReadL(0,processName);
|
|
|
1550 |
|
|
|
1551 |
User::LeaveIfError(Server().DetachProcess(processName, iDebugAgentProcessId));
|
|
|
1552 |
|
|
|
1553 |
// Inform the kernel driver about the detachment, so that
|
|
|
1554 |
// it can stop tracking per-agent data for the debugged process.
|
|
|
1555 |
RBuf8 processName8;
|
|
|
1556 |
|
|
|
1557 |
processName8.CreateL(deslen);
|
|
|
1558 |
|
|
|
1559 |
processName8.CleanupClosePushL();
|
|
|
1560 |
|
|
|
1561 |
processName8.Copy(processName);
|
|
|
1562 |
|
|
|
1563 |
// Remove the Asynchronous Object associated with this process
|
|
|
1564 |
for(TInt i=0; i<iAsyncHandlers.Count(); i++)
|
|
|
1565 |
{
|
|
|
1566 |
if (processName8.Compare(iAsyncHandlers[i]->ProcessName()) == 0)
|
|
|
1567 |
{
|
|
|
1568 |
delete iAsyncHandlers[i];
|
|
|
1569 |
iAsyncHandlers.Remove(i);
|
|
|
1570 |
|
|
|
1571 |
break;
|
|
|
1572 |
}
|
|
|
1573 |
}
|
|
|
1574 |
|
|
|
1575 |
// Inform the driver that we are no longer attached to this process
|
|
|
1576 |
User::LeaveIfError(Server().iKernelDriver.DetachProcess(processName8,iDebugAgentProcessId.Id()));
|
|
|
1577 |
|
|
|
1578 |
CleanupStack::PopAndDestroy(&processName8);
|
|
|
1579 |
CleanupStack::PopAndDestroy(&processName);
|
|
|
1580 |
|
|
|
1581 |
aMessage.Complete(KErrNone);
|
|
|
1582 |
}
|
|
|
1583 |
|
|
|
1584 |
/**
|
|
|
1585 |
Processes a DetachAll request from a debug agent.
|
|
|
1586 |
The method sets completion status of the aMessage argument to
|
|
|
1587 |
KErrNone if successfully detached and to
|
|
|
1588 |
another of the system wide error codes if there were problems.
|
|
|
1589 |
|
|
|
1590 |
@param aMessage contains:
|
|
|
1591 |
* a buffer at offset 0 which contains the FileName
|
|
|
1592 |
of the target debug process.
|
|
|
1593 |
*/
|
|
|
1594 |
void CSecuritySvrSession::DetachAllL(const RMessage2& aMessage)
|
|
|
1595 |
{
|
|
|
1596 |
LOG_MSG( "CSecuritySvrSession::DetachAllL()" );
|
|
|
1597 |
|
|
|
1598 |
User::LeaveIfError(Server().DetachProcess(_L("*"), iDebugAgentProcessId));
|
|
|
1599 |
|
|
|
1600 |
TBuf8<1> KStar8=_L8("*");
|
|
|
1601 |
|
|
|
1602 |
TBool found = EFalse;
|
|
|
1603 |
|
|
|
1604 |
// Remove the Asynchronous Object associated with the AttachAll, not the rest
|
|
|
1605 |
for(TInt i=0; i<iAsyncHandlers.Count(); i++)
|
|
|
1606 |
{
|
|
|
1607 |
if (iAsyncHandlers[i]->ProcessName().Compare(KStar8) == 0)
|
|
|
1608 |
{
|
|
|
1609 |
delete iAsyncHandlers[i];
|
|
|
1610 |
iAsyncHandlers.Remove(i);
|
|
|
1611 |
User::LeaveIfError(Server().iKernelDriver.DetachProcess(KStar8,iDebugAgentProcessId.Id()));
|
|
|
1612 |
found = ETrue;
|
|
|
1613 |
break;
|
|
|
1614 |
}
|
|
|
1615 |
}
|
|
|
1616 |
|
|
|
1617 |
if( !found )
|
|
|
1618 |
{
|
|
|
1619 |
LOG_MSG2( "CSecuritySvrSession::DetachAllL() : Did not find the asynch handler for agent 0x%lx",
|
|
|
1620 |
iDebugAgentProcessId.Id() );
|
|
|
1621 |
User::Leave(KErrNotFound);
|
|
|
1622 |
}
|
|
|
1623 |
|
|
|
1624 |
aMessage.Complete(KErrNone);
|
|
|
1625 |
}
|
|
|
1626 |
|
|
|
1627 |
/**
|
|
|
1628 |
@param aMessage The RMessage2 object is expected to contain:
|
|
|
1629 |
* aMessage.Int0() - TDes8 Containing the process name.
|
|
|
1630 |
* aMessage.Int1() - Address of TPtr8 containing TEventInfo
|
|
|
1631 |
|
|
|
1632 |
*/
|
|
|
1633 |
void CSecuritySvrSession::GetEventL(const RMessage2& aMessage)
|
|
|
1634 |
{
|
|
|
1635 |
LOG_MSG( "CSecuritySvrSession::GetEventL()\n" );
|
|
|
1636 |
|
|
|
1637 |
// Local descriptor to contain target process name
|
|
|
1638 |
TInt deslen = aMessage.GetDesLengthL(0);
|
|
|
1639 |
|
|
|
1640 |
RBuf processName;
|
|
|
1641 |
|
|
|
1642 |
processName.CreateL(deslen);
|
|
|
1643 |
|
|
|
1644 |
processName.CleanupClosePushL();
|
|
|
1645 |
|
|
|
1646 |
// Read the target process name into processName
|
|
|
1647 |
aMessage.ReadL(0,processName);
|
|
|
1648 |
|
|
|
1649 |
// Check if debug agent is attached to process
|
|
|
1650 |
if(!Server().CheckAttachedProcess(processName, aMessage, EFalse))
|
|
|
1651 |
{
|
|
|
1652 |
LOG_MSG("CSecuritySvrSession::GetEventL() - Not attached to this process\n");
|
|
|
1653 |
|
|
|
1654 |
// Debug Agent is not attached at all to the requested process
|
|
|
1655 |
User::Leave(KErrPermissionDenied);
|
|
|
1656 |
}
|
|
|
1657 |
|
|
|
1658 |
// Identify which process is being debugged, so that
|
|
|
1659 |
// we can locate the appropriate active object handler.
|
|
|
1660 |
RBuf8 processName8;
|
|
|
1661 |
|
|
|
1662 |
processName8.CreateL(processName.Length());
|
|
|
1663 |
|
|
|
1664 |
processName8.CleanupClosePushL();
|
|
|
1665 |
|
|
|
1666 |
processName8.Copy(processName);
|
|
|
1667 |
|
|
|
1668 |
// Find the Asynchronous Object associated with this process,
|
|
|
1669 |
// as it is permissible to have an outstanding GetEvent call
|
|
|
1670 |
// for each attached process.
|
|
|
1671 |
TBool foundHandler = EFalse;
|
|
|
1672 |
for(TInt i=0; i<iAsyncHandlers.Count(); i++)
|
|
|
1673 |
{
|
|
|
1674 |
if (processName8.Compare(iAsyncHandlers[i]->ProcessName()) == 0)
|
|
|
1675 |
{
|
|
|
1676 |
iAsyncHandlers[i]->GetEvent(aMessage);
|
|
|
1677 |
foundHandler = ETrue;
|
|
|
1678 |
break;
|
|
|
1679 |
}
|
|
|
1680 |
}
|
|
|
1681 |
|
|
|
1682 |
if (foundHandler == EFalse)
|
|
|
1683 |
{
|
|
|
1684 |
// could not find an async handler object. Report the problem.
|
|
|
1685 |
LOG_MSG("CSecuritySvrSessionL - Could not find a handler object\n");
|
|
|
1686 |
User::Leave(KErrNotFound);
|
|
|
1687 |
}
|
|
|
1688 |
|
|
|
1689 |
// Actually make the driver call, passing in the agent Id
|
|
|
1690 |
// so that the driver knows which per-agent event queue
|
|
|
1691 |
// to interrogate to retrieve the latest event.
|
|
|
1692 |
CleanupStack::PopAndDestroy(&processName8);
|
|
|
1693 |
CleanupStack::PopAndDestroy(&processName);
|
|
|
1694 |
}
|
|
|
1695 |
|
|
|
1696 |
/**
|
|
|
1697 |
Cancels a pre-issued GetEvent call for a specific debugged process.
|
|
|
1698 |
|
|
|
1699 |
@param aMessage.Int0() - TDes8 containing aProcessName
|
|
|
1700 |
*/
|
|
|
1701 |
void CSecuritySvrSession::CancelGetEventL(const RMessage2& aMessage)
|
|
|
1702 |
{
|
|
|
1703 |
LOG_MSG( "CSecuritySvrSession::CancelGetEventL()\n" );
|
|
|
1704 |
|
|
|
1705 |
// Local descriptor to contain target process name
|
|
|
1706 |
TInt deslen = aMessage.GetDesLengthL(0);
|
|
|
1707 |
|
|
|
1708 |
RBuf processName;
|
|
|
1709 |
|
|
|
1710 |
processName.CreateL(deslen);
|
|
|
1711 |
|
|
|
1712 |
processName.CleanupClosePushL();
|
|
|
1713 |
|
|
|
1714 |
// Read the target process name into processName
|
|
|
1715 |
aMessage.ReadL(0,processName,0);
|
|
|
1716 |
|
|
|
1717 |
// Debug Agent is not an active debugger. Check if the DA is passively attached
|
|
|
1718 |
if(!Server().CheckAttachedProcess(processName, aMessage, EFalse))
|
|
|
1719 |
{
|
|
|
1720 |
// Debug Agent is not attached at all to the requested process
|
|
|
1721 |
User::Leave(KErrPermissionDenied);
|
|
|
1722 |
}
|
|
|
1723 |
|
|
|
1724 |
// Identify the appropriate active object associate
|
|
|
1725 |
// with this process.
|
|
|
1726 |
RBuf8 processName8;
|
|
|
1727 |
|
|
|
1728 |
processName8.CreateL(processName.Length());
|
|
|
1729 |
|
|
|
1730 |
processName8.CleanupClosePushL();
|
|
|
1731 |
|
|
|
1732 |
processName8.Copy(processName);
|
|
|
1733 |
|
|
|
1734 |
// Find the Asynchronous Object associated with this process
|
|
|
1735 |
TBool foundHandler = EFalse;
|
|
|
1736 |
for(TInt i=0; i<iAsyncHandlers.Count(); i++)
|
|
|
1737 |
{
|
|
|
1738 |
if (processName8.Compare(iAsyncHandlers[i]->ProcessName()) == 0)
|
|
|
1739 |
{
|
|
|
1740 |
|
|
|
1741 |
// Found the AO handler, so cancel the outstanding getevent call.
|
|
|
1742 |
iAsyncHandlers[i]->Cancel();
|
|
|
1743 |
foundHandler = ETrue;
|
|
|
1744 |
break;
|
|
|
1745 |
}
|
|
|
1746 |
}
|
|
|
1747 |
|
|
|
1748 |
if(!foundHandler)
|
|
|
1749 |
{
|
|
|
1750 |
// We could not found a handler, so report the problem to the debug agent
|
|
|
1751 |
User::Leave(KErrNotFound);
|
|
|
1752 |
}
|
|
|
1753 |
|
|
|
1754 |
//do cleanup
|
|
|
1755 |
CleanupStack::PopAndDestroy(&processName8);
|
|
|
1756 |
CleanupStack::PopAndDestroy(&processName);
|
|
|
1757 |
|
|
|
1758 |
aMessage.Complete(KErrNone);
|
|
|
1759 |
}
|
|
|
1760 |
|
|
|
1761 |
/*
|
|
|
1762 |
Purpose: Sets the required event action to be taken for a specific
|
|
|
1763 |
process and event combination
|
|
|
1764 |
|
|
|
1765 |
@param aMessage The RMessage2 object is expected to contain:
|
|
|
1766 |
* aMessage.Int0() - TDes8 Containing the process name.
|
|
|
1767 |
* aMessage.Int1() - TEventType
|
|
|
1768 |
* aMessage.Int2() - TKernelEventAction
|
|
|
1769 |
*
|
|
|
1770 |
*/
|
|
|
1771 |
void CSecuritySvrSession::SetEventActionL(const RMessage2& aMessage)
|
|
|
1772 |
{
|
|
|
1773 |
LOG_MSG( "CSecuritySvrSession::SetEventActionL()\n" );
|
|
|
1774 |
|
|
|
1775 |
// Local descriptor to contain target process name
|
|
|
1776 |
TInt deslen = aMessage.GetDesLengthL(0);
|
|
|
1777 |
|
|
|
1778 |
RBuf processName;
|
|
|
1779 |
|
|
|
1780 |
processName.CreateL(deslen);
|
|
|
1781 |
|
|
|
1782 |
processName.CleanupClosePushL();
|
|
|
1783 |
|
|
|
1784 |
// Read the target process name into processName
|
|
|
1785 |
aMessage.ReadL(0,processName);
|
|
|
1786 |
|
|
|
1787 |
//check that the agent has attached to the target process
|
|
|
1788 |
if(!Server().CheckAttachedProcess(processName, aMessage, EFalse))
|
|
|
1789 |
{
|
|
|
1790 |
// Debug Agent is not attached at all to the requested process
|
|
|
1791 |
User::Leave(KErrPermissionDenied);
|
|
|
1792 |
}
|
|
|
1793 |
|
|
|
1794 |
// Extract and validate the arguments from aMessage
|
|
|
1795 |
TUint32 event = aMessage.Int1();
|
|
|
1796 |
if (event >= EEventsLast)
|
|
|
1797 |
{
|
|
|
1798 |
// Supplied event Id was not recognised
|
|
|
1799 |
User::Leave(KErrArgument);
|
|
|
1800 |
}
|
|
|
1801 |
|
|
|
1802 |
TUint32 action = aMessage.Int2();
|
|
|
1803 |
if(action >= EActionLast)
|
|
|
1804 |
{
|
|
|
1805 |
// Supplied event action was not recognised
|
|
|
1806 |
User::Leave(KErrArgument);
|
|
|
1807 |
}
|
|
|
1808 |
|
|
|
1809 |
RBuf8 processName8;
|
|
|
1810 |
|
|
|
1811 |
processName8.CreateL(processName.Length());
|
|
|
1812 |
|
|
|
1813 |
processName8.CleanupClosePushL();
|
|
|
1814 |
|
|
|
1815 |
processName8.Copy(processName);
|
|
|
1816 |
|
|
|
1817 |
// Make the call to the device driver
|
|
|
1818 |
TInt err = Server().iKernelDriver.SetEventAction(processName8, \
|
|
|
1819 |
(TEventType)event,\
|
|
|
1820 |
(TKernelEventAction)action,\
|
|
|
1821 |
iDebugAgentProcessId.Id());
|
|
|
1822 |
|
|
|
1823 |
User::LeaveIfError(err);
|
|
|
1824 |
|
|
|
1825 |
CleanupStack::PopAndDestroy(&processName8);
|
|
|
1826 |
CleanupStack::PopAndDestroy(&processName);
|
|
|
1827 |
|
|
|
1828 |
aMessage.Complete(KErrNone);
|
|
|
1829 |
}
|
|
|
1830 |
|
|
|
1831 |
/**
|
|
|
1832 |
Purpose: Single-step a thread for a specified number of instructions
|
|
|
1833 |
|
|
|
1834 |
@param aMessage.Ptr0() - Thread Id of the thread to be stepped
|
|
|
1835 |
@param aMessage.Int1() - Number of instructions to step.
|
|
|
1836 |
|
|
|
1837 |
@leave one of the system wide error codes
|
|
|
1838 |
|
|
|
1839 |
*/
|
|
|
1840 |
void CSecuritySvrSession::StepL(const RMessage2& aMessage)
|
|
|
1841 |
{
|
|
|
1842 |
LOG_MSG( "CSecuritySvrSession::StepL()\n" );
|
|
|
1843 |
|
|
|
1844 |
const TThreadId threadId = ReadTThreadIdL(aMessage, 0);
|
|
|
1845 |
const TInt32 numSteps = aMessage.Int1();
|
|
|
1846 |
|
|
|
1847 |
CheckAttachedL(threadId, aMessage, EFalse);
|
|
|
1848 |
|
|
|
1849 |
User::LeaveIfError(Server().iKernelDriver.Step( threadId, numSteps ));
|
|
|
1850 |
|
|
|
1851 |
aMessage.Complete(KErrNone);
|
|
|
1852 |
}
|
|
|
1853 |
|
|
|
1854 |
/**
|
|
|
1855 |
* This checks whether or not the agent is permitted access to the flash partition
|
|
|
1856 |
* @return KErrNone if allowed, otherwise one of the system wide error codes
|
|
|
1857 |
* @leave one of the system wide error codes
|
|
|
1858 |
*/
|
|
|
1859 |
TInt CSecuritySvrSession::CheckFlashAccessPermissionL(const RThread& aClientThread)
|
|
|
1860 |
{
|
|
|
1861 |
// Read the OEM Debug token capabilities (if any)
|
|
|
1862 |
GetDebugAgentOEMTokenCapsL();
|
|
|
1863 |
|
|
|
1864 |
if(Server().OEMTokenPermitsFlashAccessL((iOEMDebugCapabilities)))
|
|
|
1865 |
{
|
|
|
1866 |
return KErrNone;
|
|
|
1867 |
}
|
|
|
1868 |
|
|
|
1869 |
return KErrPermissionDenied;
|
|
|
1870 |
}
|
|
|
1871 |
|
|
|
1872 |
/**
|
|
|
1873 |
Purpose: Read the crash log from the crash flash partition
|
|
|
1874 |
@param aMessage.Int0() - Position to read from.
|
|
|
1875 |
@param aMessage.Ptr1() - Buffer to hold the data retrieved
|
|
|
1876 |
@param aMessage.Int2() - Size of the data to read.
|
|
|
1877 |
|
|
|
1878 |
@leave one of the system wide error codes
|
|
|
1879 |
*/
|
|
|
1880 |
void CSecuritySvrSession::ReadCrashLogL (const RMessage2& aMessage)
|
|
|
1881 |
{
|
|
|
1882 |
//get the debug agent's thread and push handle onto clean up stack
|
|
|
1883 |
RThread clientThread;
|
|
|
1884 |
User::LeaveIfError(aMessage.Client(clientThread));
|
|
|
1885 |
CleanupClosePushL(clientThread);
|
|
|
1886 |
|
|
|
1887 |
TInt err = CheckFlashAccessPermissionL(clientThread);
|
|
|
1888 |
|
|
|
1889 |
CleanupStack::PopAndDestroy(&clientThread);
|
|
|
1890 |
|
|
|
1891 |
if(KErrNone != err)
|
|
|
1892 |
{
|
|
|
1893 |
LOG_MSG2( "CSecuritySvrSession::ReadCrashLogL() Access Not Granted - [%d]\n", err );
|
|
|
1894 |
aMessage.Complete(err);
|
|
|
1895 |
return;
|
|
|
1896 |
}
|
|
|
1897 |
|
|
|
1898 |
//Check whether drive connected.
|
|
|
1899 |
if(!iCrashConnected)
|
|
|
1900 |
ConnectCrashPartitionL();
|
|
|
1901 |
|
|
|
1902 |
TInt readPosition = aMessage.Int0(); //read position
|
|
|
1903 |
|
|
|
1904 |
TInt readSize = aMessage.Int2(); //read size
|
|
|
1905 |
|
|
|
1906 |
RBuf8 readBuf;
|
|
|
1907 |
readBuf.CreateL(readSize);
|
|
|
1908 |
readBuf.CleanupClosePushL();
|
|
|
1909 |
|
|
|
1910 |
err = iLocalDrive.Read (readPosition, readSize, readBuf);
|
|
|
1911 |
|
|
|
1912 |
//write the list data back
|
|
|
1913 |
aMessage.WriteL (1, readBuf);
|
|
|
1914 |
|
|
|
1915 |
CleanupStack::PopAndDestroy (&readBuf);
|
|
|
1916 |
|
|
|
1917 |
//Complete message
|
|
|
1918 |
aMessage.Complete(err);
|
|
|
1919 |
}
|
|
|
1920 |
/**
|
|
|
1921 |
Purpose: Function to write the crash config to the crash flash partition
|
|
|
1922 |
|
|
|
1923 |
@param aMessage.Int0() - write position in bytes from start position in flash partition.
|
|
|
1924 |
@param aMessage.Ptr1() - Buffer containing the data to be written onto the flash.
|
|
|
1925 |
The size could be 0 if only flash partition size is needed.
|
|
|
1926 |
@param aMessage.Int2() - returns the size of the flash partition.
|
|
|
1927 |
|
|
|
1928 |
@leave one of the system wide error codes
|
|
|
1929 |
*/
|
|
|
1930 |
void CSecuritySvrSession::WriteCrashConfigL(const RMessage2& aMessage)
|
|
|
1931 |
{
|
|
|
1932 |
LOG_MSG( "CSecuritySvrSession::WriteCrashConfigL()\n" );
|
|
|
1933 |
|
|
|
1934 |
//get the debug agent's thread and push handle onto clean up stack
|
|
|
1935 |
RThread clientThread;
|
|
|
1936 |
User::LeaveIfError(aMessage.Client(clientThread));
|
|
|
1937 |
CleanupClosePushL(clientThread);
|
|
|
1938 |
|
|
|
1939 |
TInt err = CheckFlashAccessPermissionL(clientThread);
|
|
|
1940 |
|
|
|
1941 |
CleanupStack::PopAndDestroy(&clientThread);
|
|
|
1942 |
|
|
|
1943 |
if(KErrNone != err)
|
|
|
1944 |
{
|
|
|
1945 |
LOG_MSG2( "CSecuritySvrSession::WriteCrashConfigL() Access Not Granted - [%d]\n", err );
|
|
|
1946 |
aMessage.Complete(err);
|
|
|
1947 |
return;
|
|
|
1948 |
}
|
|
|
1949 |
|
|
|
1950 |
//Check whether drive connected.
|
|
|
1951 |
if(!iCrashConnected)
|
|
|
1952 |
ConnectCrashPartitionL();
|
|
|
1953 |
|
|
|
1954 |
// Get the length of the buffer
|
|
|
1955 |
TInt deslen = aMessage.GetDesLengthL(1);
|
|
|
1956 |
|
|
|
1957 |
RBuf8 dataBuf;
|
|
|
1958 |
dataBuf.CreateL(deslen);
|
|
|
1959 |
dataBuf.CleanupClosePushL();
|
|
|
1960 |
|
|
|
1961 |
// data to be written to flash
|
|
|
1962 |
aMessage.ReadL(1,dataBuf);
|
|
|
1963 |
|
|
|
1964 |
TUint32 position = aMessage.Int0(); //position to start from
|
|
|
1965 |
|
|
|
1966 |
err = iLocalDrive.Write(position,(const TDesC8&)dataBuf);
|
|
|
1967 |
|
|
|
1968 |
TPtr8 dataSize((TUint8*)&deslen,4, 4);
|
|
|
1969 |
|
|
|
1970 |
//write the size of the data written back
|
|
|
1971 |
aMessage.WriteL(2,dataSize);
|
|
|
1972 |
|
|
|
1973 |
//destroy buffer
|
|
|
1974 |
CleanupStack::PopAndDestroy(&dataBuf);
|
|
|
1975 |
|
|
|
1976 |
aMessage.Complete(err);
|
|
|
1977 |
}
|
|
|
1978 |
/**
|
|
|
1979 |
Purpose: Method to erase the crash flash block
|
|
|
1980 |
|
|
|
1981 |
@param aMessage.Int0() - write position in bytes from start position in flash partition.
|
|
|
1982 |
@param aMessage.Int2() - Number of blocks to erase.
|
|
|
1983 |
|
|
|
1984 |
@leave one of the system wide error codes
|
|
|
1985 |
*/
|
|
|
1986 |
|
|
|
1987 |
void CSecuritySvrSession::EraseCrashLogL(const RMessage2& aMessage)
|
|
|
1988 |
{
|
|
|
1989 |
LOG_MSG( "CSecuritySvrSession::EraseCrashLogL()\n" );
|
|
|
1990 |
|
|
|
1991 |
//get the debug agent's thread and push handle onto clean up stack
|
|
|
1992 |
RThread clientThread;
|
|
|
1993 |
User::LeaveIfError(aMessage.Client(clientThread));
|
|
|
1994 |
CleanupClosePushL(clientThread);
|
|
|
1995 |
|
|
|
1996 |
TInt err = CheckFlashAccessPermissionL(clientThread);
|
|
|
1997 |
|
|
|
1998 |
CleanupStack::PopAndDestroy(&clientThread);
|
|
|
1999 |
|
|
|
2000 |
if(KErrNone != err)
|
|
|
2001 |
{
|
|
|
2002 |
LOG_MSG2( "CSecuritySvrSession::EraseCrashLogL() Access Not Granted - [%d]\n", err );
|
|
|
2003 |
aMessage.Complete(err);
|
|
|
2004 |
return;
|
|
|
2005 |
}
|
|
|
2006 |
|
|
|
2007 |
//Check whether drive connected.
|
|
|
2008 |
if(!iCrashConnected)
|
|
|
2009 |
ConnectCrashPartitionL();
|
|
|
2010 |
|
|
|
2011 |
TInt64 position = aMessage.Int0();
|
|
|
2012 |
TInt size = aMessage.Int1();
|
|
|
2013 |
|
|
|
2014 |
//Format drive
|
|
|
2015 |
err = iLocalDrive.Format(position,size*iCaps.iEraseBlockSize);
|
|
|
2016 |
|
|
|
2017 |
aMessage.Complete(err);
|
|
|
2018 |
}
|
|
|
2019 |
|
|
|
2020 |
/**
|
|
|
2021 |
Purpose: Method to erase the entire crash flash block
|
|
|
2022 |
@leave one of the system wide error codes
|
|
|
2023 |
*/
|
|
|
2024 |
|
|
|
2025 |
void CSecuritySvrSession::EraseEntireCrashLogL(const RMessage2& aMessage)
|
|
|
2026 |
{
|
|
|
2027 |
LOG_MSG( "CSecuritySvrSession::EraseEntireCrashLogL()\n" );
|
|
|
2028 |
|
|
|
2029 |
//get the debug agent's thread and push handle onto clean up stack
|
|
|
2030 |
RThread clientThread;
|
|
|
2031 |
User::LeaveIfError(aMessage.Client(clientThread));
|
|
|
2032 |
CleanupClosePushL(clientThread);
|
|
|
2033 |
|
|
|
2034 |
TInt err = CheckFlashAccessPermissionL(clientThread);
|
|
|
2035 |
|
|
|
2036 |
CleanupStack::PopAndDestroy(&clientThread);
|
|
|
2037 |
|
|
|
2038 |
if(KErrNone != err)
|
|
|
2039 |
{
|
|
|
2040 |
LOG_MSG2( "CSecuritySvrSession::EraseEntireCrashLogL() Access Not Granted - [%d]\n", err );
|
|
|
2041 |
aMessage.Complete(err);
|
|
|
2042 |
return;
|
|
|
2043 |
}
|
|
|
2044 |
|
|
|
2045 |
//Check whether drive connected.
|
|
|
2046 |
if(!iCrashConnected)
|
|
|
2047 |
ConnectCrashPartitionL();
|
|
|
2048 |
|
|
|
2049 |
TUint numberBlocks = iCaps.iSize /iCaps.iEraseBlockSize;
|
|
|
2050 |
|
|
|
2051 |
//Format drive
|
|
|
2052 |
for(TInt i = 0; i < numberBlocks; i++)
|
|
|
2053 |
{
|
|
|
2054 |
err = iLocalDrive.Format(i*iCaps.iEraseBlockSize,iCaps.iEraseBlockSize);
|
|
|
2055 |
if(KErrNone != err)
|
|
|
2056 |
{
|
|
|
2057 |
RDebug::Printf("err = %d", err);
|
|
|
2058 |
aMessage.Complete(err);
|
|
|
2059 |
return;
|
|
|
2060 |
}
|
|
|
2061 |
}
|
|
|
2062 |
|
|
|
2063 |
|
|
|
2064 |
aMessage.Complete(err);
|
|
|
2065 |
}
|
|
|
2066 |
|
|
|
2067 |
|
|
|
2068 |
/**
|
|
|
2069 |
Purpose: Kill a specified process
|
|
|
2070 |
|
|
|
2071 |
@param aMessage.Ptr0() - Process Id of the thread to be stepped
|
|
|
2072 |
@param aMessage.Int1() - Reason code to supply when killing the process.
|
|
|
2073 |
|
|
|
2074 |
@leave one of the system wide error codes
|
|
|
2075 |
|
|
|
2076 |
*/
|
|
|
2077 |
void CSecuritySvrSession::KillProcessL(const RMessage2& aMessage)
|
|
|
2078 |
{
|
|
|
2079 |
LOG_MSG( "CSecuritySvrSession::KillProcessL()\n" );
|
|
|
2080 |
|
|
|
2081 |
const TProcessId processId = ReadTProcessIdL(aMessage, 0);
|
|
|
2082 |
const TInt32 reason = aMessage.Int1();
|
|
|
2083 |
|
|
|
2084 |
CheckAttachedL(processId, aMessage, EFalse);
|
|
|
2085 |
|
|
|
2086 |
User::LeaveIfError(Server().iKernelDriver.KillProcess( processId, reason ));
|
|
|
2087 |
|
|
|
2088 |
aMessage.Complete(KErrNone);
|
|
|
2089 |
}
|
|
|
2090 |
|
|
|
2091 |
/** Gets the secure id of aFileName
|
|
|
2092 |
@param aFileName file name of executable to get SID for
|
|
|
2093 |
@param aSecureId on return will contain the SID of aFileName
|
|
|
2094 |
|
|
|
2095 |
@leave one of the system wide error codes
|
|
|
2096 |
*/
|
|
|
2097 |
void CSecuritySvrSession::GetSecureIdL(const TDesC& aFileName, TUid& aSecureId)
|
|
|
2098 |
{
|
|
|
2099 |
RFs fs;
|
|
|
2100 |
User::LeaveIfError(fs.Connect());
|
|
|
2101 |
CleanupClosePushL(fs);
|
|
|
2102 |
|
|
|
2103 |
RFile targetExe;
|
|
|
2104 |
OpenFileHandleL(aFileName, fs, targetExe);
|
|
|
2105 |
CleanupClosePushL(targetExe);
|
|
|
2106 |
|
|
|
2107 |
// Read in the entire header
|
|
|
2108 |
RBuf8 e32HdrBuf;
|
|
|
2109 |
e32HdrBuf.CreateL(RLibrary::KRequiredImageHeaderSize);
|
|
|
2110 |
e32HdrBuf.CleanupClosePushL();
|
|
|
2111 |
|
|
|
2112 |
// Read the entire header as far as possible
|
|
|
2113 |
TInt err = targetExe.Read(e32HdrBuf);
|
|
|
2114 |
if (err != KErrNone)
|
|
|
2115 |
{
|
|
|
2116 |
// Could not read the file
|
|
|
2117 |
LOG_MSG("CSecuritySvrSession::GetSecureIdL - Failed to read executable\n");
|
|
|
2118 |
|
|
|
2119 |
User::Leave(err);
|
|
|
2120 |
}
|
|
|
2121 |
|
|
|
2122 |
if(!CheckSufficientData(e32HdrBuf, IsExecutableXipL(targetExe)))
|
|
|
2123 |
{
|
|
|
2124 |
User::Leave(KErrGeneral);
|
|
|
2125 |
}
|
|
|
2126 |
|
|
|
2127 |
aSecureId = GetSecureIdL(e32HdrBuf, IsExecutableXipL(targetExe));
|
|
|
2128 |
|
|
|
2129 |
CleanupStack::PopAndDestroy(3, &fs);
|
|
|
2130 |
}
|
|
|
2131 |
|
|
|
2132 |
/** Get the secure id from aHeaderData
|
|
|
2133 |
@param aHeaderData an executable's header data to read SID from
|
|
|
2134 |
@param aXip indication of whether the header data is from an XIP file
|
|
|
2135 |
|
|
|
2136 |
@return secure ID from aHeaderData
|
|
|
2137 |
*/
|
|
|
2138 |
TUid CSecuritySvrSession::GetSecureIdL(const TDesC8& aHeaderData, TBool aXip)
|
|
|
2139 |
{
|
|
|
2140 |
if(!CheckSufficientData(aHeaderData, aXip))
|
|
|
2141 |
{
|
|
|
2142 |
User::Leave(KErrGeneral);
|
|
|
2143 |
}
|
|
|
2144 |
|
|
|
2145 |
if (aXip)
|
|
|
2146 |
{
|
|
|
2147 |
TRomImageHeader* hdr = (TRomImageHeader*)aHeaderData.Ptr();
|
|
|
2148 |
return TUid::Uid(hdr->iS.iSecureId);
|
|
|
2149 |
}
|
|
|
2150 |
else
|
|
|
2151 |
{
|
|
|
2152 |
// it is an epoc32 image
|
|
|
2153 |
E32ImageHeaderV* hdr = (E32ImageHeaderV*)aHeaderData.Ptr();
|
|
|
2154 |
return TUid::Uid(hdr->iS.iSecureId);
|
|
|
2155 |
}
|
|
|
2156 |
}
|
|
|
2157 |
|
|
|
2158 |
/**
|
|
|
2159 |
@param aMessage contains:
|
|
|
2160 |
* aMessage.Ptr0() a TListDetails object
|
|
|
2161 |
* aMessage.Ptr1() a client supplied TDes8 for the driver to return data in
|
|
|
2162 |
* aMessage.Ptr2() a TUint32 for the driver to return the size of the requested listing's data in
|
|
|
2163 |
|
|
|
2164 |
@leave KErrTooBig if the buffer passed as argument 1 of aMessage is too
|
|
|
2165 |
small to contain the requested data,
|
|
|
2166 |
KErrNoMemory if a temporary buffer could not be allocated,
|
|
|
2167 |
or one of the other system wide error codes
|
|
|
2168 |
*/
|
|
|
2169 |
void CSecuritySvrSession::GetListL(const RMessage2& aMessage)
|
|
|
2170 |
{
|
|
|
2171 |
LOG_MSG("CSecuritySvrSession::GetListL()");
|
|
|
2172 |
|
|
|
2173 |
// buffer to write list data into before copying back to agent
|
|
|
2174 |
RBuf8 listDetailsBuf;
|
|
|
2175 |
|
|
|
2176 |
//allocate buffer
|
|
|
2177 |
listDetailsBuf.CreateL(sizeof(TListDetails));
|
|
|
2178 |
|
|
|
2179 |
// Do the right cleanup if anything subsequently goes wrong
|
|
|
2180 |
listDetailsBuf.CleanupClosePushL();
|
|
|
2181 |
|
|
|
2182 |
//read the data from the client thread
|
|
|
2183 |
aMessage.ReadL(0, listDetailsBuf);
|
|
|
2184 |
TListDetails* listDetails = (TListDetails*)listDetailsBuf.Ptr();
|
|
|
2185 |
|
|
|
2186 |
//get the type of list requested
|
|
|
2187 |
TListId type = (TListId)aMessage.Int0();
|
|
|
2188 |
|
|
|
2189 |
//create a buffer to store the data in
|
|
|
2190 |
RBuf8 buffer;
|
|
|
2191 |
buffer.CreateL(aMessage.GetDesMaxLength(1));
|
|
|
2192 |
buffer.CleanupClosePushL();
|
|
|
2193 |
|
|
|
2194 |
//create a temporary variable to potentially store data length in
|
|
|
2195 |
TUint32 size = 0;
|
|
|
2196 |
|
|
|
2197 |
TInt err = KErrNone;
|
|
|
2198 |
|
|
|
2199 |
// the executables list is generated in the DSS rather than in the driver
|
|
|
2200 |
// so is treated separately
|
|
|
2201 |
if(listDetails->iListId == EExecutables)
|
|
|
2202 |
{
|
|
|
2203 |
if(listDetails->iListScope != EScopeGlobal)
|
|
|
2204 |
{
|
|
|
2205 |
User::Leave(KErrArgument);
|
|
|
2206 |
}
|
|
|
2207 |
if(listDetails->iTargetId != 0)
|
|
|
2208 |
{
|
|
|
2209 |
User::Leave(KErrArgument);
|
|
|
2210 |
}
|
|
|
2211 |
err = GetExecutablesListL(buffer, size);
|
|
|
2212 |
}
|
|
|
2213 |
else
|
|
|
2214 |
{
|
|
|
2215 |
err = Server().iKernelDriver.GetList(listDetails->iListId, listDetails->iListScope, listDetails->iTargetId, iDebugAgentProcessId, buffer, size);
|
|
|
2216 |
}
|
|
|
2217 |
|
|
|
2218 |
if(err == KErrNone)
|
|
|
2219 |
{
|
|
|
2220 |
//write the list data back
|
|
|
2221 |
aMessage.WriteL(1, buffer);
|
|
|
2222 |
}
|
|
|
2223 |
|
|
|
2224 |
TPtr8 sizePtr((TUint8*)&size, sizeof(TUint32), sizeof(TUint32));
|
|
|
2225 |
//write size back to agent
|
|
|
2226 |
aMessage.WriteL(2, sizePtr);
|
|
|
2227 |
|
|
|
2228 |
CleanupStack::PopAndDestroy(&buffer);
|
|
|
2229 |
CleanupStack::PopAndDestroy(&listDetailsBuf);
|
|
|
2230 |
|
|
|
2231 |
aMessage.Complete(err);
|
|
|
2232 |
}
|
|
|
2233 |
|
|
|
2234 |
/**
|
|
|
2235 |
Gets the executables list and returns it in aBuffer if it's big enough
|
|
|
2236 |
|
|
|
2237 |
@param aBuffer caller supplied buffer to write data into
|
|
|
2238 |
@param aSize on return contains the size of the data in the buffer, or the
|
|
|
2239 |
size that the buffer would need to be to contain the data
|
|
|
2240 |
|
|
|
2241 |
@return KErrNone on success, or KErrTooBig if the requested data will not fit in aBuffer
|
|
|
2242 |
|
|
|
2243 |
@leave one of the system wide error codes
|
|
|
2244 |
*/
|
|
|
2245 |
TInt CSecuritySvrSession::GetExecutablesListL(TDes8& aBuffer, TUint32& aSize) const
|
|
|
2246 |
{
|
|
|
2247 |
LOG_MSG("CSecuritySvrSession::GetExecutablesList()");
|
|
|
2248 |
|
|
|
2249 |
//initialise values and connect to file system
|
|
|
2250 |
aSize = 0;
|
|
|
2251 |
aBuffer.SetLength(0);
|
|
|
2252 |
RFs fs;
|
|
|
2253 |
User::LeaveIfError(fs.Connect());
|
|
|
2254 |
CleanupClosePushL(fs);
|
|
|
2255 |
|
|
|
2256 |
// uids corresponding to executable image
|
|
|
2257 |
TUidType uids(KExecutableImageUid, KNullUid, KNullUid);
|
|
|
2258 |
|
|
|
2259 |
//create a string containing the directory name. The drive letter is represented
|
|
|
2260 |
//by X but will be replaced by the appropriate drive letter for each drive
|
|
|
2261 |
_LIT(KColonSysBin,":\\sys\\bin\\");
|
|
|
2262 |
|
|
|
2263 |
//create a modifiable copy of KColonSysBin, preceeded by an empty space for the drive letter
|
|
|
2264 |
RBuf dirName;
|
|
|
2265 |
dirName.CreateL(1 + KColonSysBin().Length());
|
|
|
2266 |
dirName.CleanupClosePushL();
|
|
|
2267 |
|
|
|
2268 |
//set the length to 1 (to later fill with the drive letter) and then append KColonSysBin
|
|
|
2269 |
dirName.SetLength(1);
|
|
|
2270 |
dirName.Append(KColonSysBin());
|
|
|
2271 |
|
|
|
2272 |
//get the list of valid drives for the device
|
|
|
2273 |
TDriveList driveList;
|
|
|
2274 |
User::LeaveIfError(fs.DriveList(driveList));
|
|
|
2275 |
|
|
|
2276 |
//check each valid sys/bin directory for executables
|
|
|
2277 |
for(TInt i=0; i<KMaxDrives; i++)
|
|
|
2278 |
{
|
|
|
2279 |
//if the drive is not valid then skip this drive
|
|
|
2280 |
if(!driveList[i])
|
|
|
2281 |
{
|
|
|
2282 |
//skip processing this drive
|
|
|
2283 |
continue;
|
|
|
2284 |
}
|
|
|
2285 |
|
|
|
2286 |
//get the drive letter and insert it as the drive letter for dirName
|
|
|
2287 |
TChar driveLetter;
|
|
|
2288 |
User::LeaveIfError(fs.DriveToChar(i, driveLetter));
|
|
|
2289 |
dirName[0] = (TUint)driveLetter;
|
|
|
2290 |
|
|
|
2291 |
//get a list of the exes in this drive's sys/bin directory
|
|
|
2292 |
CDir* localDir = NULL;
|
|
|
2293 |
TInt err = fs.GetDir(dirName, uids, ESortByName, localDir);
|
|
|
2294 |
if(KErrNoMemory == err)
|
|
|
2295 |
{
|
|
|
2296 |
User::Leave(err);
|
|
|
2297 |
}
|
|
|
2298 |
if(!localDir)
|
|
|
2299 |
{
|
|
|
2300 |
//skip processing this drive
|
|
|
2301 |
continue;
|
|
|
2302 |
}
|
|
|
2303 |
|
|
|
2304 |
//push onto cleanup stack in case we leave
|
|
|
2305 |
CleanupStack::PushL(localDir);
|
|
|
2306 |
|
|
|
2307 |
//iterate through the files
|
|
|
2308 |
for(TInt j=0; j<localDir->Count(); j++)
|
|
|
2309 |
{
|
|
|
2310 |
//will store x:\sys\bin\<file-name> type string
|
|
|
2311 |
RBuf fullPathName;
|
|
|
2312 |
|
|
|
2313 |
TUint16 nameLength = dirName.Length() + (*localDir)[j].iName.Length();
|
|
|
2314 |
fullPathName.CreateL(nameLength);
|
|
|
2315 |
fullPathName.CleanupClosePushL();
|
|
|
2316 |
fullPathName.Copy(dirName);
|
|
|
2317 |
fullPathName.Append((*localDir)[j].iName);
|
|
|
2318 |
|
|
|
2319 |
//add the data to the buffer
|
|
|
2320 |
AppendExecutableData(aBuffer, aSize, fullPathName);
|
|
|
2321 |
|
|
|
2322 |
//do cleanup
|
|
|
2323 |
CleanupStack::PopAndDestroy(&fullPathName);
|
|
|
2324 |
}
|
|
|
2325 |
|
|
|
2326 |
//do cleanup
|
|
|
2327 |
CleanupStack::PopAndDestroy(localDir);
|
|
|
2328 |
}
|
|
|
2329 |
|
|
|
2330 |
//do cleanup
|
|
|
2331 |
CleanupStack::PopAndDestroy(2, &fs);
|
|
|
2332 |
|
|
|
2333 |
//return appropriate value as to whether the kernel's data was too big
|
|
|
2334 |
return (aSize <= aBuffer.MaxLength()) ? KErrNone : KErrTooBig;
|
|
|
2335 |
}
|
|
|
2336 |
|
|
|
2337 |
|
|
|
2338 |
/**
|
|
|
2339 |
Append data to aBuffer and update size of aSize if the data will fit. If it will
|
|
|
2340 |
not fit then just puts the nee size in aSize.
|
|
|
2341 |
|
|
|
2342 |
@param aBuffer buffer to append the data to
|
|
|
2343 |
@param aSize on return contains the new size of the buffer if the data could be
|
|
|
2344 |
appended, otherwise aSize is updated to reflect the size the buffer would have if
|
|
|
2345 |
the data had fitted.
|
|
|
2346 |
@param aEntryName file name of the entry to add to the buffer
|
|
|
2347 |
*/
|
|
|
2348 |
void CSecuritySvrSession::AppendExecutableData(TDes8& aBuffer, TUint32& aSize, const TDesC& aEntryName) const
|
|
|
2349 |
{
|
|
|
2350 |
//update aSize to include the size of the data for this entry
|
|
|
2351 |
aSize = Align4(aSize + sizeof(TExecutablesListEntry) + (2*aEntryName.Length()) - sizeof(TUint16));
|
|
|
2352 |
|
|
|
2353 |
//if the data will fit, and we haven't already stopped putting data in, then append the data,
|
|
|
2354 |
//if we've stopped putting data in then aSize will be bigger than aBuffer.MaxLength()
|
|
|
2355 |
if(aSize <= aBuffer.MaxLength())
|
|
|
2356 |
{
|
|
|
2357 |
TExecutablesListEntry& entry = *(TExecutablesListEntry*)(aBuffer.Ptr() + aBuffer.Length());
|
|
|
2358 |
//check whether an agent has registered to actively debug fullPathName
|
|
|
2359 |
TBool activelyDebugged = IsDebugged(aEntryName, EFalse);
|
|
|
2360 |
entry.iIsActivelyDebugged = activelyDebugged ? 1 : 0;
|
|
|
2361 |
|
|
|
2362 |
//check whether any agents have registered to passively debug fullPathName
|
|
|
2363 |
TBool passivelyDebugged = IsDebugged(aEntryName, ETrue);
|
|
|
2364 |
entry.iIsPassivelyDebugged = passivelyDebugged ? 1 : 0;
|
|
|
2365 |
|
|
|
2366 |
entry.iNameLength = aEntryName.Length();
|
|
|
2367 |
TPtr name(&(entry.iName[0]), aEntryName.Length(), aEntryName.Length());
|
|
|
2368 |
name = aEntryName;
|
|
|
2369 |
//pad the buffer to a four byte boundary
|
|
|
2370 |
aBuffer.SetLength(aSize);
|
|
|
2371 |
}
|
|
|
2372 |
}
|
|
|
2373 |
/**
|
|
|
2374 |
Helper function
|
|
|
2375 |
|
|
|
2376 |
Write data back to the thread that owns aMessage
|
|
|
2377 |
|
|
|
2378 |
@param aMessage the message which is passed between processes
|
|
|
2379 |
@param aIndex the message slot which the data will be passed back in
|
|
|
2380 |
@param aPtr pointer to data in this thread to be written into aMessage
|
|
|
2381 |
@param aPtrSize size in bytes of the data to be written
|
|
|
2382 |
|
|
|
2383 |
@leave one of the system wide error codes
|
|
|
2384 |
*/
|
|
|
2385 |
void CSecuritySvrSession::WriteDataL(const RMessage2& aMessage, const TInt aIndex, const TAny* aPtr, const TUint32 aPtrSize) const
|
|
|
2386 |
{
|
|
|
2387 |
TPtr8 dataPtr((TUint8*)aPtr, aPtrSize, aPtrSize);
|
|
|
2388 |
|
|
|
2389 |
aMessage.WriteL(aIndex, dataPtr);
|
|
|
2390 |
}
|
|
|
2391 |
|
|
|
2392 |
/**
|
|
|
2393 |
Helper function.
|
|
|
2394 |
|
|
|
2395 |
Checks whether the debug agent (the owner of the aMessage) is attached to the
|
|
|
2396 |
thread with thread id of aThreadId.
|
|
|
2397 |
|
|
|
2398 |
@param aThreadId thread ID of target debug thread
|
|
|
2399 |
@param aMessage message owned by the debug agent
|
|
|
2400 |
@param aPassive indicates whether to check if attached passively or actively
|
|
|
2401 |
|
|
|
2402 |
@leave KErrPermissionDenied if the agent is not attached to the process,
|
|
|
2403 |
KErrNoMemory if the security server could not be accessed
|
|
|
2404 |
*/
|
|
|
2405 |
void CSecuritySvrSession::CheckAttachedL(const TThreadId aThreadId, const RMessage2& aMessage, const TBool aPassive) const
|
|
|
2406 |
{
|
|
|
2407 |
//check that the agent has attached to the target process
|
|
|
2408 |
if(! Server().CheckAttached(aThreadId, aMessage, aPassive))
|
|
|
2409 |
{
|
|
|
2410 |
LOG_MSG("CSecuritySvrSession::CheckAttachedL() failed");
|
|
|
2411 |
User::Leave(KErrPermissionDenied);
|
|
|
2412 |
}
|
|
|
2413 |
}
|
|
|
2414 |
|
|
|
2415 |
/**
|
|
|
2416 |
Helper function.
|
|
|
2417 |
|
|
|
2418 |
Checks whether the debug agent (the owner of the aMessage) is attached to the
|
|
|
2419 |
process with process id of aProcessId.
|
|
|
2420 |
|
|
|
2421 |
@param aProcessId process ID of target debug thread
|
|
|
2422 |
@param aMessage message owned by the debug agent
|
|
|
2423 |
@param aPassive indicates whether to check if attached passively or actively
|
|
|
2424 |
|
|
|
2425 |
@leave KErrPermissionDenied if the agent is not attached to the process,
|
|
|
2426 |
KErrNoMemory if the security server could not be accessed
|
|
|
2427 |
*/
|
|
|
2428 |
void CSecuritySvrSession::CheckAttachedL(const TProcessId aProcessId, const RMessage2& aMessage, const TBool aPassive) const
|
|
|
2429 |
{
|
|
|
2430 |
|
|
|
2431 |
//check that the agent has attached to the target process
|
|
|
2432 |
if(! Server().CheckAttached(aProcessId, aMessage, aPassive))
|
|
|
2433 |
{
|
|
|
2434 |
LOG_MSG("CSecuritySvrSession::CheckAttachedL() (process) failed");
|
|
|
2435 |
User::Leave(KErrPermissionDenied);
|
|
|
2436 |
}
|
|
|
2437 |
}
|
|
|
2438 |
|
|
|
2439 |
/**
|
|
|
2440 |
Check whether the debug agent is permitted to attach to the target process.
|
|
|
2441 |
Note that this function does not actually attach the agent to the process, it
|
|
|
2442 |
simply tests whether an attach call would potentially be successful.
|
|
|
2443 |
|
|
|
2444 |
Currently this method returns ETrue in all cases but will be updated once
|
|
|
2445 |
the security checking framework is in place.
|
|
|
2446 |
|
|
|
2447 |
@param aDebugAgentProcessId process id of the debug agent
|
|
|
2448 |
@param aTargetProcessName original file name of the target process
|
|
|
2449 |
|
|
|
2450 |
@return ETrue if the debug agent would be allowed to attch to the target process,
|
|
|
2451 |
EFalse otherwise
|
|
|
2452 |
*/
|
|
|
2453 |
TBool CSecuritySvrSession::PermitDebugL(const TProcessId aDebugAgentProcessId, const TDesC& aTargetProcessName) const
|
|
|
2454 |
{
|
|
|
2455 |
return ETrue;
|
|
|
2456 |
}
|
|
|
2457 |
|
|
|
2458 |
/**
|
|
|
2459 |
Helper function
|
|
|
2460 |
|
|
|
2461 |
Validates that the memory info passed in meets the debug driver's requirements
|
|
|
2462 |
|
|
|
2463 |
@param aMemoryInfo memory info passed in from client
|
|
|
2464 |
|
|
|
2465 |
@leave KErrArgument if:
|
|
|
2466 |
* size is zero
|
|
|
2467 |
* size is greater than the max block size
|
|
|
2468 |
* size + address > 0xffffffff
|
|
|
2469 |
* address is not access size aligned
|
|
|
2470 |
* size is not a multiple of the access size
|
|
|
2471 |
KErrNotSupported if:
|
|
|
2472 |
* iAccess is not TAccess::EAccess32
|
|
|
2473 |
* iEndianess is not TEndianess::EEndLE8
|
|
|
2474 |
KErrUnknown if:
|
|
|
2475 |
* the max memory block size cannot be determined
|
|
|
2476 |
or one of the other system wide error codes
|
|
|
2477 |
*/
|
|
|
2478 |
void CSecuritySvrSession::ValidateMemoryInfoL(const TThreadId aThreadId, const TMemoryInfo &aMemoryInfo, const TBool aReadOperation)
|
|
|
2479 |
{
|
|
|
2480 |
//check size is not 0
|
|
|
2481 |
if(aMemoryInfo.iSize == 0)
|
|
|
2482 |
User::Leave(KErrArgument);
|
|
|
2483 |
|
|
|
2484 |
//get the max block size supported
|
|
|
2485 |
TUint32 maxSize = 0;
|
|
|
2486 |
User::LeaveIfError(Server().iKernelDriver.GetMemoryOperationMaxBlockSize(maxSize));
|
|
|
2487 |
|
|
|
2488 |
//check that the block size given is less than the max block size
|
|
|
2489 |
if(aMemoryInfo.iSize > maxSize)
|
|
|
2490 |
User::Leave(KErrArgument);
|
|
|
2491 |
|
|
|
2492 |
//must ensure that address + size <= 0xffffffff as will attempt to
|
|
|
2493 |
//read past 0xffffffff, which wouldn't be good
|
|
|
2494 |
TUint32 maxAddress = (~aMemoryInfo.iSize) + 1;
|
|
|
2495 |
if(aMemoryInfo.iAddress > maxAddress)
|
|
|
2496 |
User::Leave(KErrArgument);
|
|
|
2497 |
|
|
|
2498 |
//check that arguments are supported
|
|
|
2499 |
if(aMemoryInfo.iAccess != EAccess32)
|
|
|
2500 |
User::Leave(KErrNotSupported);
|
|
|
2501 |
|
|
|
2502 |
if(aMemoryInfo.iEndianess != EEndLE8)
|
|
|
2503 |
User::Leave(KErrNotSupported);
|
|
|
2504 |
|
|
|
2505 |
//check that address is multiple of access size
|
|
|
2506 |
TInt addressIndicator = aMemoryInfo.iAddress % aMemoryInfo.iAccess;
|
|
|
2507 |
if(addressIndicator != 0)
|
|
|
2508 |
{
|
|
|
2509 |
User::Leave(KErrArgument);
|
|
|
2510 |
}
|
|
|
2511 |
|
|
|
2512 |
//check that size is multiple of access size
|
|
|
2513 |
TInt sizeIndicator = aMemoryInfo.iSize % aMemoryInfo.iAccess;
|
|
|
2514 |
if(sizeIndicator != 0)
|
|
|
2515 |
User::Leave(KErrArgument);
|
|
|
2516 |
}
|
|
|
2517 |
|
|
|
2518 |
/**
|
|
|
2519 |
Helper function
|
|
|
2520 |
|
|
|
2521 |
Validates that the three buffers relating to reading register data are of
|
|
|
2522 |
appropriate sizes, and calculates the number of registers being requested.
|
|
|
2523 |
|
|
|
2524 |
@param aMessage message which in offsets 1, 2 and 3 contains descriptors
|
|
|
2525 |
@param aNumberOfRegisters if the function returns with KErrNone this will
|
|
|
2526 |
contain the number of registers being requested, guaranteed to be non-zero
|
|
|
2527 |
|
|
|
2528 |
@leave KErrArgument if descriptors do not represent the same number of
|
|
|
2529 |
registers, if any of the descriptors have max length of 0, if any of
|
|
|
2530 |
the descriptors have max lengths which are not multiples of their data
|
|
|
2531 |
type's size or if any of the descriptors have max lengths greater than
|
|
|
2532 |
the max block size for memory operations
|
|
|
2533 |
or one of the other system wide error codes if there were problems
|
|
|
2534 |
in getting the descriptors' lengths.
|
|
|
2535 |
*/
|
|
|
2536 |
void CSecuritySvrSession::ValidateRegisterBuffersL(const RMessage2& aMessage, TUint32& aNumberOfRegisters)
|
|
|
2537 |
{
|
|
|
2538 |
//get lengths of buffers, if error occurs returned value will be less then zero
|
|
|
2539 |
TInt idsBufferLength = aMessage.GetDesMaxLength(1);
|
|
|
2540 |
if(idsBufferLength < 0)
|
|
|
2541 |
{
|
|
|
2542 |
User::Leave(idsBufferLength);
|
|
|
2543 |
}
|
|
|
2544 |
TInt valuesBufferLength = aMessage.GetDesMaxLength(2);
|
|
|
2545 |
if(valuesBufferLength < 0)
|
|
|
2546 |
{
|
|
|
2547 |
User::Leave(valuesBufferLength);
|
|
|
2548 |
}
|
|
|
2549 |
TInt flagsBufferLength = aMessage.GetDesMaxLength(3);
|
|
|
2550 |
if(flagsBufferLength < 0)
|
|
|
2551 |
{
|
|
|
2552 |
User::Leave(flagsBufferLength);
|
|
|
2553 |
}
|
|
|
2554 |
|
|
|
2555 |
//get the max block size supported
|
|
|
2556 |
TUint32 maxSize = 0;
|
|
|
2557 |
User::LeaveIfError(Server().iKernelDriver.GetMemoryOperationMaxBlockSize(maxSize));
|
|
|
2558 |
|
|
|
2559 |
//check none of the descriptors have size greater than the max block size
|
|
|
2560 |
if((idsBufferLength > maxSize) || (valuesBufferLength > maxSize) || (flagsBufferLength > maxSize))
|
|
|
2561 |
User::Leave(KErrArgument);
|
|
|
2562 |
|
|
|
2563 |
//get sizes of the three types of data the buffers represent arrays of
|
|
|
2564 |
//and validate that the buffer lengths are multiples of the data sizes
|
|
|
2565 |
TUint idSize = sizeof(TRegisterInfo);
|
|
|
2566 |
if(idsBufferLength % idSize != 0)
|
|
|
2567 |
User::Leave(KErrArgument);
|
|
|
2568 |
|
|
|
2569 |
TUint flagSize = sizeof(TUint8);
|
|
|
2570 |
if(flagsBufferLength % flagSize != 0)
|
|
|
2571 |
User::Leave(KErrArgument);
|
|
|
2572 |
|
|
|
2573 |
//perform check on id buffer length
|
|
|
2574 |
if(idsBufferLength == 0)
|
|
|
2575 |
User::Leave(KErrArgument);
|
|
|
2576 |
|
|
|
2577 |
//calculate number of registers being requested
|
|
|
2578 |
aNumberOfRegisters = idsBufferLength / idSize;
|
|
|
2579 |
|
|
|
2580 |
//check flags buffer is of appropriate size
|
|
|
2581 |
if(flagsBufferLength != (aNumberOfRegisters * flagSize))
|
|
|
2582 |
User::Leave(KErrArgument);
|
|
|
2583 |
}
|
|
|
2584 |
|
|
|
2585 |
/**
|
|
|
2586 |
Establish whether any agents have registered to debug the specified aFileName
|
|
|
2587 |
|
|
|
2588 |
@param aFileName originating file name of the target process
|
|
|
2589 |
@param aPassive indicates whether to check if there has been active attachment,
|
|
|
2590 |
or passive attachment.
|
|
|
2591 |
|
|
|
2592 |
@return ETrue if aFileName is being debugged, EFalse otherwise
|
|
|
2593 |
|
|
|
2594 |
*/
|
|
|
2595 |
TBool CSecuritySvrSession::IsDebugged(const TDesC& aFileName, const TBool aPassive) const
|
|
|
2596 |
{
|
|
|
2597 |
//check whether the target process is being debugged
|
|
|
2598 |
return Server().IsDebugged(aFileName, aPassive);
|
|
|
2599 |
}
|
|
|
2600 |
|
|
|
2601 |
/**
|
|
|
2602 |
Helper function which reads a TThreadId object from a client
|
|
|
2603 |
|
|
|
2604 |
@param aMessage the message object containing the reference to the TThreadId
|
|
|
2605 |
@param aIndex the message argument containing the reference
|
|
|
2606 |
|
|
|
2607 |
@return the TThreadId passed in by the client
|
|
|
2608 |
@leave KErrArgument if aIndex is outside of the valid range
|
|
|
2609 |
*/
|
|
|
2610 |
TThreadId CSecuritySvrSession::ReadTThreadIdL(const RMessagePtr2& aMessage, const TInt aIndex) const
|
|
|
2611 |
{
|
|
|
2612 |
//create a temporary TThreadId to read the data into
|
|
|
2613 |
TThreadId tempThreadId;
|
|
|
2614 |
TPtr8 threadIdPtr((TUint8*)&tempThreadId, sizeof(TThreadId));
|
|
|
2615 |
|
|
|
2616 |
// read the data in from the client
|
|
|
2617 |
aMessage.ReadL(aIndex, threadIdPtr);
|
|
|
2618 |
|
|
|
2619 |
return tempThreadId;
|
|
|
2620 |
}
|
|
|
2621 |
|
|
|
2622 |
/**
|
|
|
2623 |
Helper function which reads a TProcessId object from a client
|
|
|
2624 |
|
|
|
2625 |
@param aMessage the message object containing the reference to the TProcessId
|
|
|
2626 |
@param aIndex the message argument containing the reference
|
|
|
2627 |
|
|
|
2628 |
@return the TProcessId passed in by the client
|
|
|
2629 |
@leave KErrArgument if aIndex is outside of the valid range
|
|
|
2630 |
*/
|
|
|
2631 |
TProcessId CSecuritySvrSession::ReadTProcessIdL(const RMessagePtr2& aMessage, const TInt aIndex) const
|
|
|
2632 |
{
|
|
|
2633 |
//create a temporary TProcessId to read the data into
|
|
|
2634 |
TProcessId tempProcessId;
|
|
|
2635 |
TPtr8 processIdPtr((TUint8*)&tempProcessId, sizeof(TProcessId));
|
|
|
2636 |
|
|
|
2637 |
// read the data in from the client
|
|
|
2638 |
aMessage.ReadL(aIndex, processIdPtr);
|
|
|
2639 |
|
|
|
2640 |
return tempProcessId;
|
|
|
2641 |
}
|
|
|
2642 |
|
|
|
2643 |
// End of file - c_security_svr_session.cpp
|