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GhostDbg.hpp
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#pragma once
/*
Copyright (c) 2020 Victor Sheinmann, Vicshann@gmail.com
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
struct NGhDbg
{
typedef NShMem SHM; // Shorter and helps in case of renaming
//====================================================================================
enum EDatType {dtNone,dtNull=0x01,dtBool=0x02,dtBYTE=0x04,dtWORD=0x08,dtDWORD=0x10,dtQWORD=0x20,dtSigned=0x40,dtReal=0x80};
enum EMsgType {mtNone,mtDbgReq=0x01,mtDbgRsp=0x02,mtUsrReq=0x04,mtUsrRsp=0x08,mtInfo=0x10};
enum EMsgId {
// System
miNone,
miHello,
miGoodby,
// Debugging
miQueryInformationProcess,
miQueryInformationThread,
miProtectVirtualMemory,
miFlushVirtualMemory,
miQueryVirtualMemory,
miDebugActiveProcess,
miDebugActiveProcessStop,
miContinueDebugEvent,
miWaitForDebugEvent,
miDebugBreakProcess,
miGetThreadContext,
miSetThreadContext,
miReadVirtualMemory,
miWriteVirtualMemory,
miTerminateThread,
miTerminateProcess,
miSuspendThread,
miResumeThread,
// User
miDbgSetConfigs,
miDbgGetConfigs,
miDbgDetachNtfy,
miUserBase // Base inex for inspecified custom messages
};
struct DbgEvtEx: public DEBUG_EVENT
{
UINT PathSize; // In chars
wchar_t FilePath[1];
};
//====================================================================================
class CThreadList // TODO: Decompose or reorganize
{
public:
struct SThDesc
{
enum ThFlags {tfNone=0,tfTraceFlg=0x01,tfDbgCont=0x02,tfOpenedHnd=0x04,tfMarkedForRemove=0x08,tfSuspendedForAll=0x10, tfTraceFlagMsk=0x0100};
volatile DWORD Flags;
volatile DWORD Index;
volatile DWORD ThreadID; // Not WORD
volatile HANDLE hThread;
volatile PVOID pContext; // Non NULL only if thread is in Exception Handler (Suspended)
volatile TEB* pThTeb;
struct SHwBp
{
PBYTE Addr;
DWORD Size;
} volatile HwBpLst[4];
struct SDbgCtx
{
SIZE_T Dr0;
SIZE_T Dr1;
SIZE_T Dr2;
SIZE_T Dr3;
SIZE_T Dr6;
SIZE_T Dr7;
bool TrFlg; // Unreliable, because this flag can be accessed with pushf/popf
} volatile DbgCtx;
//------------------------------------------------------------------------------------
inline void SyncResFlags(DWORD Flg){_InterlockedAnd((long*)&this->Flags,~Flg);}
inline void SyncSetFlags(DWORD Flg){_InterlockedOr((long*)&this->Flags,Flg);}
inline DWORD SyncGetFlags(DWORD Flg){return this->Flags & Flg;}
inline void SetTraceFlagState(bool State)
{
if(State)this->SyncSetFlags(tfTraceFlg);
else this->SyncResFlags(tfTraceFlg);
}
//------------------------------------------------------------------------------------
inline void SetDbgContinueState(bool State)
{
if(State)this->SyncSetFlags(tfDbgCont);
else this->SyncResFlags(tfDbgCont);
}
//------------------------------------------------------------------------------------
};
private:
SHM::CGrowArr<SThDesc, 128> ThreadLst;
SHM::CArgPack<sizeof(DbgEvtEx) * 32> EvtStk;
SHM::CCritSectEx<> csec;
int TotalInStack;
//------------------------------------------------------------------------------------
void RemoveThreadFromListByIdx(DWORD Index)
{
if((this->ThreadLst[Index].Flags & SThDesc::tfOpenedHnd) && this->ThreadLst[Index].hThread)NtClose(this->ThreadLst[Index].hThread);
// DBGMSG("Index=%u, ThreadID=%u",Index,this->ThreadLst[Index].ThreadID);
this->ThreadLst[Index].hThread = NULL;
this->ThreadLst[Index].ThreadID = 0;
}
//------------------------------------------------------------------------------------
SThDesc* GetThreadDesc(UINT Index)
{
if(!this->IsThreadIndexExist(Index))return NULL;
return &this->ThreadLst[Index];
}
//------------------------------------------------------------------------------------
public:
UINT DbgEventCnt;
//------------------------------------------------------------------------------------
CThreadList(void)
{
this->TotalInStack = 0;
this->DbgEventCnt = 0;
this->Clear();
}
//------------------------------------------------------------------------------------
~CThreadList()
{
this->Clear();
}
//------------------------------------------------------------------------------------
void Lock(void)
{
// DBGMSG("Locking...");
this->csec.Lock();
// DBGMSG("Locked");
}
//------------------------------------------------------------------------------------
void UnLock(void)
{
// DBGMSG("UnLocking...");
this->csec.Unlock();
// DBGMSG("Unlocked");
}
//------------------------------------------------------------------------------------
int EventsInStack(void){return this->TotalInStack;}
//------------------------------------------------------------------------------------
DbgEvtEx* PushDbgEvent(UINT ExtraSize=0) // Requires ThreadList lock
{
this->TotalInStack++;
return (DbgEvtEx*)this->EvtStk.PushBlkEx(sizeof(DbgEvtEx) + ExtraSize);
}
//------------------------------------------------------------------------------------
DbgEvtEx* PopDbgEvent(UINT* Size=NULL) // Requires ThreadList lock
{
if(this->TotalInStack <= 0){DBGMSG("No events in stack!"); return NULL;}
this->TotalInStack--;
return (DbgEvtEx*)this->EvtStk.PopBlkEx(Size);
}
//------------------------------------------------------------------------------------
DbgEvtEx* GetDbgEventAt(UINT& Offset)
{
return (DbgEvtEx*)this->EvtStk.GetBlkAt(Offset);
}
//------------------------------------------------------------------------------------
// Windows Server 2003 and Windows XP: The value of the THREAD_ALL_ACCESS flag increased on Windows Server 2008 and Windows Vista. If an application compiled for Windows Server 2008 and
// Windows Vista is run on Windows Server 2003 or Windows XP, the THREAD_ALL_ACCESS flag contains access bits that are not supported and the function specifying this flag fails with ERROR_ACCESS_DENIED.
//
int AddThreadToList(TEB* pThTeb, DWORD ThreadID=0, HANDLE hThread=NULL, LARGE_INTEGER* CreateTime=NULL, bool CanOpen=true)
{
int NewThIdx = -1;
if(!ThreadID && pThTeb)ThreadID = (DWORD)pThTeb->ClientId.UniqueThread;
for(UINT ctr=0,total=this->ThreadLst.Count();ctr < total;ctr++)
{
SThDesc* ThDes = &this->ThreadLst[ctr];
if(ThreadID && (ThDes->ThreadID == ThreadID))return ctr; // Already in list
if(hThread && (ThDes->hThread == hThread ))return ctr; // Already in list
if(!ThDes->hThread)NewThIdx = ctr;
}
SThDesc* ThDes;
if(NewThIdx < 0) // Adding a new slot
{
NewThIdx = this->ThreadLst.Count();
ThDes = this->ThreadLst.Add(NULL);
}
else ThDes = &this->ThreadLst[NewThIdx]; // Reusing an empty slot
// DBGMSG("Adding a new thread: %u",NewThIdx);
ThDes->ThreadID = ThreadID;
ThDes->Index = NewThIdx;
ThDes->pContext = NULL;
ThDes->pThTeb = pThTeb;
if(CanOpen && !hThread)
{
CLIENT_ID CliID;
OBJECT_ATTRIBUTES ObjAttr;
CliID.UniqueThread = (HANDLE)SIZE_T(ThreadID);
CliID.UniqueProcess = 0;
ObjAttr.Length = sizeof(ObjAttr);
ObjAttr.RootDirectory = NULL;
ObjAttr.Attributes = 0; // bInheritHandle ? 2 : 0;
ObjAttr.ObjectName = NULL;
ObjAttr.SecurityDescriptor = ObjAttr.SecurityQualityOfService = NULL;
if(NTSTATUS stat = NtOpenThread((HANDLE*)&ThDes->hThread, SYNCHRONIZE|THREAD_GET_CONTEXT|THREAD_SET_CONTEXT|THREAD_QUERY_INFORMATION|THREAD_SET_INFORMATION|THREAD_SUSPEND_RESUME|THREAD_TERMINATE, &ObjAttr, &CliID))
{
ThDes->hThread = NULL;
ThDes->ThreadID = 0;
DBGMSG("Failed to open thread %u at %u: %08X",ThreadID,NewThIdx,stat);
return -1;
}
ThDes->Flags = SThDesc::tfOpenedHnd;
if(ThreadID != NtCurrentThreadId())
{
if(NTSTATUS stat = NtSuspendThread(ThDes->hThread, NULL)){DBGMSG("Failed to suspend: %08X",stat);}
else ThDes->Flags |= SThDesc::tfSuspendedForAll;
}
if(CreateTime)
{
KERNEL_USER_TIMES times;
ULONG RetLen = 0;
if(NTSTATUS stat = NtQueryInformationThread(ThDes->hThread,ThreadTimes,×,sizeof(times),&RetLen)){DBGMSG("Failed to query thread times: %08X",stat);} // A debugger will request this many times anyway
CreateTime->QuadPart = times.CreateTime.QuadPart;
}
}
else
{
ThDes->Flags = SThDesc::tfNone;
ThDes->hThread = hThread;
}
DBGMSG("ThreadID=%08X(%u), hThread=%08X, CreateTime=%016llX, Index=%u",ThDes->ThreadID,ThDes->ThreadID,ThDes->hThread,(CreateTime?CreateTime->QuadPart:0),NewThIdx);
return NewThIdx;
}
//------------------------------------------------------------------------------------
static bool IsCurrentThreadDesc(SThDesc* Desc, TEB* CurrTeb)
{
if(Desc->pThTeb != CurrTeb)return false;
if(Desc->ThreadID != (UINT)CurrTeb->ClientId.UniqueThread){DBGMSG("Inconsistent Thread entry %u for %u(%u)!",Desc->Index,Desc->ThreadID,(UINT)CurrTeb->ClientId.UniqueThread); return false;} // Current TEB has been reused!
return true;
}
//------------------------------------------------------------------------------------
bool IsThreadInList(DWORD ThreadID, HANDLE hThread=NULL){return (this->FindThreadIdxInList(NULL, ThreadID, hThread) >= 0);}
bool IsThreadIndexExist(UINT Index){return ((Index < this->ThreadLst.Count()) && this->ThreadLst[Index].hThread);}
//------------------------------------------------------------------------------------
PTEB GetTebByIndex(UINT Index)
{
PTEB val = NULL;
if(Index < this->ThreadLst.Count())val = (PTEB)this->ThreadLst[Index].pThTeb; // NULL if the slot is empty
return val;
}
//------------------------------------------------------------------------------------
HANDLE GetHandleByIndex(UINT Index)
{
HANDLE val = NULL;
if(Index < this->ThreadLst.Count())val = this->ThreadLst[Index].hThread; // NULL if the slot is empty
return val;
}
//------------------------------------------------------------------------------------
HANDLE GetHandleByID(UINT ThreadID)
{
int Idx = this->FindThreadIdxInList(NULL, ThreadID, NULL);
if(Idx < 0)return NULL;
if(Idx < (int)this->ThreadLst.Count())return this->ThreadLst[Idx].hThread; // NULL if the slot is empty
return NULL;
}
//------------------------------------------------------------------------------------
int FindThreadIdxInList(SThDesc** Res, DWORD ThreadID, HANDLE hThread=NULL) // Returns a first thread in the list if both ThreadID and hThread are NULL
{
for(UINT ctr=0,total=this->ThreadLst.Count();ctr < total;ctr++)
{
if(!this->ThreadLst[ctr].hThread)continue; // The slot is empty
if(hThread && (this->ThreadLst[ctr].hThread != hThread))continue;
if(ThreadID && (this->ThreadLst[ctr].ThreadID != ThreadID))continue;
if(Res)*Res = &this->ThreadLst[ctr];
return ctr;
}
// DBGMSG("Thread %u:%08X not found!",ThreadID,hThread);
return -1;
}
//------------------------------------------------------------------------------------
bool RemoveThreadFromList(DWORD ThreadID, HANDLE hThread=NULL) // A process can create and delete some thread very frequently so no memory moving here, just invalidate removed entries
{
int Idx = this->FindThreadIdxInList(NULL, ThreadID, hThread);
if(Idx < 0)return false;
this->RemoveThreadFromListByIdx(Idx);
return true;
}
//------------------------------------------------------------------------------------
void Clear(void)
{
this->Lock();
for(UINT ctr=0,total=this->ThreadLst.Count();ctr < total;ctr++)
{
SThDesc* ThDes = &this->ThreadLst[ctr];
if((ThDes->Flags & SThDesc::tfOpenedHnd) && ThDes->hThread)NtClose(ThDes->hThread);
}
this->ThreadLst.Clear();
this->EvtStk.Clear();
this->UnLock();
}
//------------------------------------------------------------------------------------
NTSTATUS Suspend(UINT Idx, PULONG PrevCnt=NULL, bool MarkForRemove=false, bool SuspForAll=false) // TODO: Report_DEAD_THREAD_DEBUG_EVENT if HANDLE in STATUS_THREAD_IS_TERMINATING
{
if(!this->IsThreadIndexExist(Idx))return STATUS_NOT_FOUND;
NTSTATUS Status = STATUS_UNSUCCESSFUL;
if(MarkForRemove)this->ThreadLst[Idx].Flags |= SThDesc::tfMarkedForRemove; // Will be removed after next Resume
if(HANDLE hTh = this->ThreadLst[Idx].hThread)
{
DBGMSG("Idx=%u, ThID=%u",Idx,this->ThreadLst[Idx].ThreadID);
if(IsCurrentThreadDesc(&this->ThreadLst[Idx],NtCurrentTeb()))this->UnLock(); // Unlocks if locked to suspend self
if(SuspForAll)
{
if(this->ThreadLst[Idx].Flags & SThDesc::tfSuspendedForAll){DBGMSG("Already suspended for all - skipping!"); return STATUS_SUCCESS;}
this->ThreadLst[Idx].Flags |= SThDesc::tfSuspendedForAll; // Prevent the thread from suspending again by SuspendAllThreads until ResumeAllThreads is called
}
Status = NtSuspendThread(hTh, PrevCnt);
DBGMSG("Status=%08X",Status);
if(Status == STATUS_THREAD_IS_TERMINATING)this->ReportDeadThreadDbgEvt(Idx);
}
return Status;
}
//------------------------------------------------------------------------------------
NTSTATUS Resume(UINT Idx, PULONG PrevCnt=NULL, int DbgContinue=-1) // TODO: Report_DEAD_THREAD_DEBUG_EVENT if HANDLE in STATUS_THREAD_IS_TERMINATING
{
if(!this->IsThreadIndexExist(Idx))return STATUS_NOT_FOUND;
ULONG Prev = 0;
NTSTATUS Status = STATUS_UNSUCCESSFUL;
if(DbgContinue >= 0)this->ThreadLst[Idx].SetDbgContinueState(DbgContinue); // DbgCont = DbgContinue; // ???
if(this->ThreadLst[Idx].hThread)Status = NtResumeThread(this->ThreadLst[Idx].hThread, &Prev);
if((Status || (Prev <= 1)) && (this->ThreadLst[Idx].Flags & SThDesc::tfMarkedForRemove))this->RemoveThreadFromListByIdx(Idx);
if(Status == STATUS_THREAD_IS_TERMINATING)this->ReportDeadThreadDbgEvt(Idx);
if(PrevCnt)*PrevCnt = Prev;
return Status;
}
//------------------------------------------------------------------------------------
NTSTATUS SuspendAllThreads(DWORD SingleThreadID, int SingleThreadIdx=-1, bool MarkForRemove=false, bool SkipSpecified=false) // Suspends only registered threads so ClientThread is safe
{
ULONG PrevCnt = 0;
if(!SingleThreadID && (SingleThreadIdx >= 0))
{
SThDesc* ThDesc = GetThreadDesc(SingleThreadIdx);
if(ThDesc)SingleThreadID = ThDesc->ThreadID;
}
SThDesc* CurrThDesc = NULL;
TEB* CurrTeb = NtCurrentTeb();
for(UINT ctr=0,total=this->ThreadLst.Count();ctr < total;ctr++)
{
SThDesc* ThDesc = &this->ThreadLst[ctr];
if(!ThDesc->hThread)continue; // The slot is empty
if(SkipSpecified && SingleThreadID && (ThDesc->ThreadID == SingleThreadID)){DBGMSG("Skipping: ThID=%u",ThDesc->ThreadID); continue;}
if(MarkForRemove && SingleThreadID && (ThDesc->ThreadID == SingleThreadID))ThDesc->Flags |= SThDesc::tfMarkedForRemove; // Will be removed after next Resume
if(ThDesc->Flags & SThDesc::tfSuspendedForAll)continue; // Already suspended for all
if(IsCurrentThreadDesc(ThDesc,CurrTeb)){CurrThDesc = ThDesc; continue;} // Current thread is in the list - suspend it last
NTSTATUS Status = NtSuspendThread(ThDesc->hThread, &PrevCnt);
ThDesc->Flags |= SThDesc::tfSuspendedForAll;
DBGMSG("ThID=%u, Status=%08X, SuspLst=%i",ThDesc->ThreadID, Status, PrevCnt);
if(Status == STATUS_THREAD_IS_TERMINATING)this->ReportDeadThreadDbgEvt(ctr);
}
if(CurrThDesc)
{
HANDLE hThread = CurrThDesc->hThread;
DWORD ThID = CurrThDesc->ThreadID;
DBGMSG("This Thread: ThID=%u",CurrThDesc->ThreadID);
this->UnLock(); // Release BEFORE suspending!
if(hThread) // This thread
{
NTSTATUS Status = NtSuspendThread(hThread, &PrevCnt);
DBGMSG("CURR: ThID=%u, Status=%08X, SuspLst=%i",ThID, Status, PrevCnt);
if(Status == STATUS_THREAD_IS_TERMINATING)
{
int TIdx = this->FindThreadIdxInList(NULL,ThID);
if(TIdx >= 0)this->ReportDeadThreadDbgEvt(TIdx);
}
}
}
return STATUS_SUCCESS; // Always
}
//------------------------------------------------------------------------------------
NTSTATUS ResumeAllThreads(DWORD SingleThreadID, int SingleThreadIdx=-1, int DbgContinue=-1)
{
if(!SingleThreadID && (SingleThreadIdx >= 0))
{
SThDesc* ThDesc = GetThreadDesc(SingleThreadIdx);
if(ThDesc)SingleThreadID = ThDesc->ThreadID;
}
TEB* CurrTeb = NtCurrentTeb();
for(UINT ctr=0,total=this->ThreadLst.Count();ctr < total;ctr++)
{
SThDesc* ThDesc = &this->ThreadLst[ctr];
if(!ThDesc->hThread)continue; // The slot is empty
if((ThDesc->ThreadID == SingleThreadID) && (DbgContinue >= 0))ThDesc->SetDbgContinueState(DbgContinue); // DbgCont = DbgContinue; // ???
ULONG PrevCnt = 0;
NTSTATUS Status = STATUS_UNSUCCESSFUL;
if(!IsCurrentThreadDesc(ThDesc,CurrTeb)){Status = NtResumeThread(ThDesc->hThread, &PrevCnt); ThDesc->Flags &= ~SThDesc::tfSuspendedForAll; DBGMSG("ThID=%u, Status=%08X, SuspLst=%i",ThDesc->ThreadID, Status, PrevCnt);} // Current thread is already running but suspend count > 0?
if((Status || (PrevCnt <= 1)) && (ThDesc->Flags & SThDesc::tfMarkedForRemove))this->RemoveThreadFromListByIdx(ctr); // Remove ALL marked threads whey they are resumed // Or Status is something like "TheThreadIsTerminating"
else if(Status == STATUS_THREAD_IS_TERMINATING)this->ReportDeadThreadDbgEvt(ctr);
}
return STATUS_SUCCESS;
}
//------------------------------------------------------------------------------------
NTSTATUS SetContextVal(UINT Idx, PCONTEXT Ctx)
{
if(!this->IsThreadIndexExist(Idx))return STATUS_NOT_FOUND;
if(!this->ThreadLst[Idx].pContext)return NtSetContextThread(this->ThreadLst[Idx].hThread, Ctx); // Not in exception handler
PCONTEXT ThCtx = (PCONTEXT)this->ThreadLst[Idx].pContext; // Exception handler`s Context
ThCtx->ContextFlags |= Ctx->ContextFlags; // Merge groups
#ifdef _AMD64_
ThCtx->MxCsr = Ctx->MxCsr; // ?????????????
if(Ctx->ContextFlags & CONTEXT_DEBUG_REGISTERS)
{
ThCtx->Dr0 = Ctx->Dr0;
ThCtx->Dr1 = Ctx->Dr1;
ThCtx->Dr2 = Ctx->Dr2;
ThCtx->Dr3 = Ctx->Dr3;
ThCtx->Dr6 = Ctx->Dr6;
ThCtx->Dr7 = Ctx->Dr7;
}
if(Ctx->ContextFlags & CONTEXT_CONTROL)
{
ThCtx->Rbp = Ctx->Rbp;
ThCtx->Rip = Ctx->Rip;
ThCtx->SegCs = Ctx->SegCs;
ThCtx->EFlags = Ctx->EFlags;
ThCtx->Rsp = Ctx->Rsp;
ThCtx->SegSs = Ctx->SegSs;
}
if(Ctx->ContextFlags & CONTEXT_SEGMENTS)
{
ThCtx->SegGs = Ctx->SegGs;
ThCtx->SegFs = Ctx->SegFs;
ThCtx->SegEs = Ctx->SegEs;
ThCtx->SegDs = Ctx->SegDs;
}
if(Ctx->ContextFlags & CONTEXT_INTEGER)
{
ThCtx->Rdi = Ctx->Rdi;
ThCtx->Rsi = Ctx->Rsi;
ThCtx->Rbx = Ctx->Rbx;
ThCtx->Rdx = Ctx->Rdx;
ThCtx->Rcx = Ctx->Rcx;
ThCtx->Rax = Ctx->Rax;
ThCtx->R8 = Ctx->R8;
ThCtx->R9 = Ctx->R9;
ThCtx->R10 = Ctx->R10;
ThCtx->R11 = Ctx->R11;
ThCtx->R12 = Ctx->R12;
ThCtx->R13 = Ctx->R13;
ThCtx->R14 = Ctx->R14;
ThCtx->R15 = Ctx->R15;
}
if(Ctx->ContextFlags & CONTEXT_FLOATING_POINT)
{
memcpy(&ThCtx->FltSave,&Ctx->FltSave,sizeof(XMM_SAVE_AREA32));
}
if(Ctx->ContextFlags & CONTEXT_XSTATE)
{
memcpy(&ThCtx->VectorRegister,&Ctx->VectorRegister,sizeof(Ctx->VectorRegister));
ThCtx->VectorControl = Ctx->VectorControl;
}
#else
if(Ctx->ContextFlags & CONTEXT_DEBUG_REGISTERS)
{
ThCtx->Dr0 = Ctx->Dr0;
ThCtx->Dr1 = Ctx->Dr1;
ThCtx->Dr2 = Ctx->Dr2;
ThCtx->Dr3 = Ctx->Dr3;
ThCtx->Dr6 = Ctx->Dr6;
ThCtx->Dr7 = Ctx->Dr7;
}
if(Ctx->ContextFlags & CONTEXT_CONTROL)
{
ThCtx->Ebp = Ctx->Ebp;
ThCtx->Eip = Ctx->Eip;
ThCtx->SegCs = Ctx->SegCs;
ThCtx->EFlags = Ctx->EFlags;
ThCtx->Esp = Ctx->Esp;
ThCtx->SegSs = Ctx->SegSs;
}
if(Ctx->ContextFlags & CONTEXT_SEGMENTS)
{
ThCtx->SegGs = Ctx->SegGs;
ThCtx->SegFs = Ctx->SegFs;
ThCtx->SegEs = Ctx->SegEs;
ThCtx->SegDs = Ctx->SegDs;
}
if(Ctx->ContextFlags & CONTEXT_INTEGER)
{
ThCtx->Edi = Ctx->Edi;
ThCtx->Esi = Ctx->Esi;
ThCtx->Ebx = Ctx->Ebx;
ThCtx->Edx = Ctx->Edx;
ThCtx->Ecx = Ctx->Ecx;
ThCtx->Eax = Ctx->Eax;
}
if(Ctx->ContextFlags & CONTEXT_FLOATING_POINT)
{
memcpy(&ThCtx->FloatSave,&Ctx->FloatSave,sizeof(FLOATING_SAVE_AREA));
}
if(Ctx->ContextFlags & CONTEXT_EXTENDED_REGISTERS)
{
memcpy(&ThCtx->ExtendedRegisters,&Ctx->ExtendedRegisters,sizeof(Ctx->ExtendedRegisters));
}
if(Ctx->ContextFlags & CONTEXT_XSTATE) // TODO:
{
}
#endif
DBGMSG("Stored locally: %u",Idx);
return STATUS_SUCCESS;
}
//------------------------------------------------------------------------------------
NTSTATUS GetContextVal(UINT Idx, PCONTEXT Ctx)
{
if(!this->IsThreadIndexExist(Idx))return STATUS_NOT_FOUND;
if(!this->ThreadLst[Idx].pContext)return NtGetContextThread(this->ThreadLst[Idx].hThread, Ctx); // Not in exception handler
PCONTEXT ThCtx = (PCONTEXT)this->ThreadLst[Idx].pContext; // Exception handler`s Context
Ctx->ContextFlags &= ThCtx->ContextFlags; // Take only present groups
#ifdef _AMD64_
Ctx->MxCsr = ThCtx->MxCsr; // ?????????????
if(Ctx->ContextFlags & CONTEXT_DEBUG_REGISTERS)
{
Ctx->Dr0 = ThCtx->Dr0;
Ctx->Dr1 = ThCtx->Dr1;
Ctx->Dr2 = ThCtx->Dr2;
Ctx->Dr3 = ThCtx->Dr3;
Ctx->Dr6 = ThCtx->Dr6;
Ctx->Dr7 = ThCtx->Dr7;
}
if(Ctx->ContextFlags & CONTEXT_CONTROL)
{
Ctx->Rbp = ThCtx->Rbp;
Ctx->Rip = ThCtx->Rip;
Ctx->SegCs = ThCtx->SegCs;
Ctx->EFlags = ThCtx->EFlags;
Ctx->Rsp = ThCtx->Rsp;
Ctx->SegSs = ThCtx->SegSs;
}
if(Ctx->ContextFlags & CONTEXT_SEGMENTS)
{
Ctx->SegGs = ThCtx->SegGs;
Ctx->SegFs = ThCtx->SegFs;
Ctx->SegEs = ThCtx->SegEs;
Ctx->SegDs = ThCtx->SegDs;
}
if(Ctx->ContextFlags & CONTEXT_INTEGER)
{
Ctx->Rdi = ThCtx->Rdi;
Ctx->Rsi = ThCtx->Rsi;
Ctx->Rbx = ThCtx->Rbx;
Ctx->Rdx = ThCtx->Rdx;
Ctx->Rcx = ThCtx->Rcx;
Ctx->Rax = ThCtx->Rax;
Ctx->R8 = ThCtx->R8;
Ctx->R9 = ThCtx->R9;
Ctx->R10 = ThCtx->R10;
Ctx->R11 = ThCtx->R11;
Ctx->R12 = ThCtx->R12;
Ctx->R13 = ThCtx->R13;
Ctx->R14 = ThCtx->R14;
Ctx->R15 = ThCtx->R15;
}
if(Ctx->ContextFlags & CONTEXT_FLOATING_POINT)
{
memcpy(&Ctx->FltSave,&ThCtx->FltSave,sizeof(XMM_SAVE_AREA32));
}
if(Ctx->ContextFlags & CONTEXT_XSTATE)
{
memcpy(&Ctx->VectorRegister,&ThCtx->VectorRegister,sizeof(Ctx->VectorRegister));
Ctx->VectorControl = ThCtx->VectorControl;
}
#else
if(Ctx->ContextFlags & CONTEXT_DEBUG_REGISTERS)
{
Ctx->Dr0 = ThCtx->Dr0;
Ctx->Dr1 = ThCtx->Dr1;
Ctx->Dr2 = ThCtx->Dr2;
Ctx->Dr3 = ThCtx->Dr3;
Ctx->Dr6 = ThCtx->Dr6;
Ctx->Dr7 = ThCtx->Dr7;
}
if(Ctx->ContextFlags & CONTEXT_CONTROL)
{
Ctx->Ebp = ThCtx->Ebp;
Ctx->Eip = ThCtx->Eip;
Ctx->SegCs = ThCtx->SegCs;
Ctx->EFlags = ThCtx->EFlags;
Ctx->Esp = ThCtx->Esp;
Ctx->SegSs = ThCtx->SegSs;
}
if(Ctx->ContextFlags & CONTEXT_SEGMENTS)
{
Ctx->SegGs = ThCtx->SegGs;
Ctx->SegFs = ThCtx->SegFs;
Ctx->SegEs = ThCtx->SegEs;
Ctx->SegDs = ThCtx->SegDs;
}
if(Ctx->ContextFlags & CONTEXT_INTEGER)
{
Ctx->Edi = ThCtx->Edi;
Ctx->Esi = ThCtx->Esi;
Ctx->Ebx = ThCtx->Ebx;
Ctx->Edx = ThCtx->Edx;
Ctx->Ecx = ThCtx->Ecx;
Ctx->Eax = ThCtx->Eax;
}
if(Ctx->ContextFlags & CONTEXT_FLOATING_POINT)
{
memcpy(&Ctx->FloatSave,&ThCtx->FloatSave,sizeof(FLOATING_SAVE_AREA));
}
if(Ctx->ContextFlags & CONTEXT_EXTENDED_REGISTERS)
{
memcpy(&Ctx->ExtendedRegisters,&ThCtx->ExtendedRegisters,sizeof(Ctx->ExtendedRegisters));
}
if(Ctx->ContextFlags & CONTEXT_XSTATE) // TODO:
{
}
#endif
DBGMSG("Read locally: %u",Idx);
return STATUS_SUCCESS;
}
//------------------------------------------------------------------------------------
bool IsSingleStepping(UINT Idx)
{
// if(!this->IsThreadIndexExist(Idx))return false; // Used only by HandleException anyway
return this->ThreadLst[Idx].SyncGetFlags(SThDesc::tfTraceFlg);
}
//------------------------------------------------------------------------------------
bool UpdTraceFlag(UINT Idx, PCONTEXT Ctx)
{
if(!(Ctx->ContextFlags & CONTEXT_CONTROL) || !this->IsThreadIndexExist(Idx))return false;
this->ThreadLst[Idx].SetTraceFlagState(Ctx->EFlags & SThDesc::tfTraceFlagMsk); // Trap flag mask
return true;
}
//------------------------------------------------------------------------------------
/* The value of registers DR0-DR3 is preserved across all threads
31-16 15-14 13 12-10 9-0
DR7: ???? ???? ???? ???? ?? ? ??? ??????????
LNRW LNRW LNRW LNRW G 001 GLGLGLGLGL
3333 2222 1111 0000 D EE33221100
RW: 0=Exe,1=Wr,2=IO,3=RdWr
LN: 0=1,1=2,2=8,3=4
*/
bool UpdHardwareBp(UINT Idx, PCONTEXT Ctx)
{
if(!(Ctx->ContextFlags & CONTEXT_DEBUG_REGISTERS) || !this->IsThreadIndexExist(Idx))return false;
SThDesc* ThDes = &this->ThreadLst[Idx];
memset((void*)&ThDes->HwBpLst,0,sizeof(ThDes->HwBpLst));
for(UINT ctr=0;ctr < 4;ctr++) // Nothing special for x64?
{
if(!(Ctx->Dr7 & (1ULL << (ctr*2))))continue; // Skip any not enabled // Windows uses 'local' breakpoints
BYTE LCod = (Ctx->Dr7 >> (18+(ctr*4))) & 3; // Breakpoint size
if(LCod & 2)ThDes->HwBpLst[ctr].Size = (LCod & 1)?(4):(8);
else ThDes->HwBpLst[ctr].Size = LCod+1;
switch(ctr)
{
case 0:
ThDes->HwBpLst[ctr].Addr = (PBYTE)Ctx->Dr0;
break;
case 1:
ThDes->HwBpLst[ctr].Addr = (PBYTE)Ctx->Dr1;
break;
case 2:
ThDes->HwBpLst[ctr].Addr = (PBYTE)Ctx->Dr2;
break;
case 3:
ThDes->HwBpLst[ctr].Addr = (PBYTE)Ctx->Dr3;
break;
}
}
return true;
}
//------------------------------------------------------------------------------------
bool IsHardwareBpHit(UINT Idx, PVOID Addr)
{
// if(!this->IsThreadIndexExist(Idx))return false; // Used only by HandleException anyway
SThDesc* ThDes = &this->ThreadLst[Idx];
for(UINT ctr=0;ctr < 4;ctr++) // Nothing special for x64?
{
if(!ThDes->HwBpLst[ctr].Addr)continue;
if(((PBYTE)Addr >= ThDes->HwBpLst[ctr].Addr)&&((PBYTE)Addr < &ThDes->HwBpLst[ctr].Addr[ThDes->HwBpLst[ctr].Size]))return true;
}
return false;
}
//------------------------------------------------------------------------------------
bool ReadDbgContext(UINT Idx, PCONTEXT Ctx) // Remember DRx changes, made by an application
{
if(!this->IsThreadIndexExist(Idx))return false;
SThDesc* ThDes = &this->ThreadLst[Idx];
if(Ctx->ContextFlags & CONTEXT_DEBUG_REGISTERS) // Only if present in Src
{
ThDes->DbgCtx.Dr0 = Ctx->Dr0;
ThDes->DbgCtx.Dr1 = Ctx->Dr1;
ThDes->DbgCtx.Dr2 = Ctx->Dr2;
ThDes->DbgCtx.Dr3 = Ctx->Dr3;
ThDes->DbgCtx.Dr6 = Ctx->Dr6;
ThDes->DbgCtx.Dr7 = Ctx->Dr7;
}
if(Ctx->ContextFlags & CONTEXT_CONTROL)ThDes->DbgCtx.TrFlg = (Ctx->EFlags & 0x0100); // ResumeFlag?
return false;
}
//------------------------------------------------------------------------------------
bool WriteDbgContext(UINT Idx, PCONTEXT Ctx) // Restore DRx state to show it to an application
{
if(!this->IsThreadIndexExist(Idx))return false;
SThDesc* ThDes = &this->ThreadLst[Idx];
if(Ctx->ContextFlags & CONTEXT_DEBUG_REGISTERS) // Only if required by dest
{
Ctx->Dr0 = ThDes->DbgCtx.Dr0;
Ctx->Dr1 = ThDes->DbgCtx.Dr1;
Ctx->Dr2 = ThDes->DbgCtx.Dr2;
Ctx->Dr3 = ThDes->DbgCtx.Dr3;
Ctx->Dr6 = ThDes->DbgCtx.Dr6;
Ctx->Dr7 = ThDes->DbgCtx.Dr7;
}
if(Ctx->ContextFlags & CONTEXT_CONTROL)Ctx->EFlags = (Ctx->EFlags & ~0x0100)|((UINT)ThDes->DbgCtx.TrFlg << 8);
return false;
}
//------------------------------------------------------------------------------------
int ReportDeadThreadDbgEvt(int ThIndex) // Requires Lock // TEB is already deallocated. Thread`s handle is in STATUS_THREAD_IS_TERMINATING state // Somehow a thread may avoid NtTerminateThread and die
{
SThDesc* Desc = this->GetThreadDesc(ThIndex);
if(Desc->Flags & SThDesc::tfMarkedForRemove)return 0; // Already removing
this->DbgEventCnt++;
DbgEvtEx* evt = this->PushDbgEvent();
evt->dwDebugEventCode = EXIT_THREAD_DEBUG_EVENT;
evt->dwProcessId = NtCurrentProcessId(); // this->CurProcID;
evt->dwThreadId = Desc->ThreadID; // Do not access its TEB in case it is already deallocated
evt->PathSize = 0;
evt->u.ExitThread.dwExitCode = 0;
Desc->Flags |= SThDesc::tfMarkedForRemove;
DBGMSG("PushDbgEvt: ThreadID=%08X(%u), ExitCode=%08X",Desc->ThreadID,Desc->ThreadID,evt->u.ExitThread.dwExitCode);
return 0;
}
//------------------------------------------------------------------------------------
};
//====================================================================================
class CSwBpList // TODO: PAGE breakpoints
{
SHM::CCritSectEx<> csec;
SHM::CGrowArr<PVOID, 32> SwBpLst;
public:
//------------------------------------------------------------------------------------
CSwBpList(void)
{
}
//------------------------------------------------------------------------------------
~CSwBpList()
{
}
//------------------------------------------------------------------------------------
int AddBP(PVOID Addr)
{
this->csec.Lock();
int BpIdx = -1;
for(UINT ctr=0,total=this->SwBpLst.Count();ctr < total;ctr++)
{
PVOID Val = this->SwBpLst[ctr];
if(Val == Addr){this->csec.Unlock(); return ctr;} // Already in list
if(!Val)BpIdx = ctr;
}
if(BpIdx < 0)
{
BpIdx = this->SwBpLst.Count();
this->SwBpLst.Add(NULL);
}
this->SwBpLst[BpIdx] = Addr;
this->csec.Unlock();
DBGMSG("Adding SwBP: %u",BpIdx);
return BpIdx;
}
//------------------------------------------------------------------------------------
int DelBP(PVOID Addr)
{
this->csec.Lock();
int BpIdx = this->GetBpIdxForAddr(Addr);
if(BpIdx < 0){this->csec.Unlock(); return -1;}
this->SwBpLst[BpIdx] = NULL;
this->csec.Unlock();
DBGMSG("Removing SwBP: %u",BpIdx);
return BpIdx;
}
//------------------------------------------------------------------------------------
int IsHitBP(PVOID Addr){return (this->GetBpIdxForAddr(Addr) >= 0);}
int GetBpIdxForAddr(PVOID Addr)
{
this->csec.Lock();
for(UINT ctr=0,total=this->SwBpLst.Count();ctr < total;ctr++)
{
PVOID Cadr = this->SwBpLst[ctr];
if(Cadr && (Cadr == Addr)){this->csec.Unlock(); return ctr;}
}
this->csec.Unlock();
return -1;
}
//------------------------------------------------------------------------------------
};
//====================================================================================
//
//
//
//====================================================================================
class CDbgClient: public SHM::CMessageIPC
{
bool BreakWrk;
bool InDbgEvent;
bool DbgAttached;
DWORD ExcludedThID;
DWORD DbgBrkThID;
DWORD ClientThID;
DWORD MainThID;
DWORD CurProcID;
PVOID hClientDll;
HANDLE hIPCThread;
UINT IPCSize;
UINT UrsOpts;
CSwBpList BpList;
CThreadList ThList;
//------------------------------------------------------------------------------------
_declspec(noinline) static void DoDbgBreak(PVOID This){__debugbreak();} // Makes it harder to track 'int 3'?
static bool IsAddrInDbgBreak(PVOID Addr){return (((PBYTE)Addr >= (PBYTE)&DoDbgBreak)&&((PBYTE)Addr < ((PBYTE)&DoDbgBreak + 64)));}
static void _fastcall DbgBreakThread(PVOID ThreadParameter)
{
CDbgClient* DbgIPC = (CDbgClient*)ThreadParameter;
DoDbgBreak(DbgIPC); // x64Dbg will continue normally from this // Any DebugBreak functions may be tracked
NtTerminateThread(NtCurrentThread, 0);
}
//------------------------------------------------------------------------------------
PTEB FindModulesAndTEBs(TEB* CurTeb, SHM::CGrowArrImpl<PBYTE>* ModArr, SHM::CGrowArrImpl<PTEB>* TebArr, int* MainThreadIndex=NULL)
{
MEMORY_BASIC_INFORMATION meminfo;
SIZE_T RetLen = 0;
SIZE_T MemoryInformationLength = sizeof(MEMORY_BASIC_INFORMATION);
PBYTE BaseAddress = NULL;
PVOID LastABase = NULL;
PTEB MainThTeb = NULL;
long MainThIdx = -1;
LARGE_INTEGER MinCrtTime;
LARGE_INTEGER CurrCrtTime;
DBGMSG("Current: PEB=%p, TEB=%p",CurTeb->ProcessEnvironmentBlock,CurTeb);
this->ThList.Lock();
MinCrtTime.QuadPart = -1i64;
for(;!NtQueryVirtualMemory(NtCurrentProcess,BaseAddress,MemoryBasicInformation,&meminfo,MemoryInformationLength,&RetLen); BaseAddress += meminfo.RegionSize)
{
// DBGMSG("BLK: Addr=%p, Base=%p, ABase=%p, Size=%08X, Type=%08X, State=%08X, Protect=%08X, AProtect=%08X",BaseAddress,meminfo.BaseAddress,meminfo.AllocationBase,meminfo.RegionSize,meminfo.Type,meminfo.State,meminfo.Protect,meminfo.AllocationProtect);
if((meminfo.Type == MEM_IMAGE) && (meminfo.State == MEM_COMMIT))
{
if(LastABase == meminfo.AllocationBase)continue;
LastABase = meminfo.AllocationBase;
if(NPEFMT::IsValidPEHeader(BaseAddress))
{
DBGMSG("Found PE image at %p",BaseAddress);
*ModArr->Add(NULL) = BaseAddress;
}
}
else if((meminfo.Type == MEM_PRIVATE) && (meminfo.State == MEM_COMMIT) && (meminfo.Protect == meminfo.AllocationProtect) && (meminfo.Protect == PAGE_READWRITE) && (meminfo.RegionSize >= 0x1000) && (meminfo.RegionSize < 0x100000)) // WinXP TEB >= 0x2000 ? // Win7 x32 TEB Blk is 0x1000 // On latest Win10 many TEBs in same big block as PEB
{
PBYTE DataPtr = (PBYTE)BaseAddress;
for(UINT Offset=0;Offset < meminfo.RegionSize;Offset+=0x1000) // Find all TEBs in the block
{
TEB* MayBeTEB = (TEB*)&DataPtr[Offset];
if((MayBeTEB->ProcessEnvironmentBlock == CurTeb->ProcessEnvironmentBlock) && (MayBeTEB->ClientId.UniqueProcess == CurTeb->ClientId.UniqueProcess)) // && (MayBeTEB->CurrentLocale == CurTeb->CurrentLocale))
{
DBGMSG("Found TEB at %p, %u",MayBeTEB, (UINT)MayBeTEB->ClientId.UniqueThread);
if((MayBeTEB != CurTeb) && ((UINT)MayBeTEB->ClientId.UniqueThread != this->ExcludedThID)) // Assuming that CurTeb belongs to Client Thread
{
int ThIdx = this->ThList.AddThreadToList(MayBeTEB, 0, NULL, &CurrCrtTime);
if(ThIdx >= 0)
{
*TebArr->Add(NULL) = MayBeTEB; // Includes ClientThread
// DBGMSG("MainThTeb=%p, CurrCrtTime=%016llX, MinCrtTime=%016llX",MainThTeb, CurrCrtTime.QuadPart, MinCrtTime.QuadPart);
if((UINT64)CurrCrtTime.QuadPart < (UINT64)MinCrtTime.QuadPart){MainThTeb = MayBeTEB; MainThIdx = ThIdx; MinCrtTime.QuadPart = CurrCrtTime.QuadPart;} // Not reliable!
}
}
else {DBGMSG("Skipping the excluded thread: %u", (UINT)MayBeTEB->ClientId.UniqueThread);}
}
}
}
}
if(MainThreadIndex)*MainThreadIndex = MainThIdx;
this->ThList.UnLock();
return MainThTeb;
}
//------------------------------------------------------------------------------------
// NOTE: Buffer is locked by this thread in message enumeration
//
int ProcessRequestDbg(SMsgHdr* Req)
{
SHM::CArgPack<2048> api; // '__chkstk' is disabled with '/Gs100000000' // -Gs9999999
SHM::CArgPack<2048> apo; // Had to put it here to save some stack space (Because variables for each scope are allocated at beginning of the function)
DBGMSG("ReqAddr=%p, MsgID=%u, MsgSeqID=%u",Req,Req->MsgID, Req->GetBlk()->MsgSeqID);
// static UINT LastMsg = 0;
// if(Req->GetBlk()->MsgSeqID <= LastMsg){ DBGMSG("Trouble!"); } // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// LastMsg = Req->GetBlk()->MsgSeqID;
switch(Req->MsgID)
{
case miDebugActiveProcess:
{
BOOL Reslt = TRUE;
DWORD dwProcessId = 0;
api.Assign((PBYTE)&Req->Data,Req->DataSize);
api.PopArg(dwProcessId);
if(dwProcessId != this->CurProcID){DBGMSG("Process ID mismatch: %08X:%08X",dwProcessId,this->CurProcID); return -1;} // Allow to fail here?
this->DbgAttached = true;
SHM::CGrowArr<PTEB, 128> TebArr; // NOTE: Stack arrays reserved on stack forever
SHM::CGrowArr<PBYTE, 128> ModArr; // 2048
int MainThIdx = -1;
PTEB CurTeb = NtCurrentTeb(); // ThreadID is DbgIPC->ClientThID and should not be reported to a debugger
PTEB MainThTeb = this->FindModulesAndTEBs(CurTeb, &ModArr, &TebArr, &MainThIdx);
DBGMSG("MainThTeb: %p",MainThTeb); // May happen to be NULL :)
this->MainThID = (UINT)MainThTeb->ClientId.UniqueThread; // MainThTeb should be present!!! // Report this only in CREATE_PROCESS_DEBUG_EVENT // Not guranteed to return a real main(first) thread
HANDLE hPHandle = UintToFakeHandle(this->CurProcID);
apo.PushArg(hPHandle);
HANDLE hTHandle = UintToFakeHandle(MainThIdx);
apo.PushArg(hTHandle);
apo.PushArg(MainThTeb);
apo.PushArg(this->MainThID);
apo.PushArg(Reslt);
DBGMSG("miDebugActiveProcess PutMsg: hPHandle=%08X, hTHandle=%08X, MainThId=%u, Size=%u",hPHandle,hTHandle,this->MainThID,apo.GetLen());
this->PutMsg(mtDbgRsp, miDebugActiveProcess, Req->Sequence, apo.GetPtr(), apo.GetLen());
DBGMSG("Modules=%u, Threads=%u, MainThreadID=%u, ClientThreadID=%u",ModArr.Count(),TebArr.Count(),this->MainThID,this->ClientThID);
for(int Ctr=TebArr.Count()-1;Ctr >= 0;Ctr--) // Originally all threads suspended by DebugActiveProcess before any of debug events reported but we do not have any handles yet
{
TEB* pTeb = TebArr[Ctr];
UINT ThID = (UINT)pTeb->ClientId.UniqueThread;
if((ThID == this->ClientThID)||(ThID == this->MainThID)||(ThID == this->ExcludedThID))continue; // Do not report Client, Caller thread and Main thread(again) // Man thread must be reported only in CREATE_PROCESS_DEBUG_EVENT
this->Report_CREATE_THREAD_DEBUG_EVENT(pTeb, false, true); // Open a thread`s handle, report it and suspend
}
for(int Ctr=ModArr.Count()-1;Ctr >= 0;Ctr--) // Must be AFTER reporting and supending of all threads
{
PVOID hModule = ModArr[Ctr];
if((hModule == this->hClientDll)||(hModule == CurTeb->ProcessEnvironmentBlock->ImageBaseAddress))continue; // Do not report Client DLL and main module
this->Report_LOAD_DLL_DEBUG_INFO(MainThTeb, hModule, true); // No suspending here (Only a main thread is registered anyway)
}
this->Report_CREATE_PROCESS_DEBUG_EVENT(MainThTeb); // Report process creation // Suspend Main Thread
this->DispatchDebugEvents(true); // Dispatch initial events backwards
}
break;
case miDebugActiveProcessStop:
{
DBGMSG("miDebugActiveProcessStop");
this->DbgAttached = false;
}
break;
case miContinueDebugEvent:
{
BOOL Reslt = TRUE;
DWORD dwProcessId = 0;
DWORD dwThreadId;
DWORD dwContinueStatus;
api.Assign((PBYTE)&Req->Data,Req->DataSize);
api.PopArg(dwProcessId);
api.PopArg(dwThreadId);
api.PopArg(dwContinueStatus);
if(dwProcessId != this->CurProcID){DBGMSG("Process ID mismatch: %08X:%08X",dwProcessId,this->CurProcID);}
int res = -1;
int SingleThreadIdx = -1;
bool DbgContinue = (dwContinueStatus == DBG_CONTINUE);
apo.PushArg(Reslt);
DBGMSG("miContinueDebugEvent PutMsg: ThId=%u, Size=%u",dwThreadId,apo.GetLen());
this->PutMsg(mtDbgRsp, miContinueDebugEvent, Req->Sequence, apo.GetPtr(), apo.GetLen()); // Report before resuming any threads because it may be a thread at NtTerminateProcess
this->ThList.Lock();
this->ThList.DbgEventCnt--;
DBGMSG("EventsAfter=%u, InStack=%u",this->ThList.DbgEventCnt,this->ThList.EventsInStack());
if(!this->EvtSuspAllTh) // Resumes all threads or at least the event`s thread
{
if(SingleThreadIdx < 0)SingleThreadIdx = this->ThList.FindThreadIdxInList(nullptr, dwThreadId);
if(SingleThreadIdx >= 0)res = this->ThList.Resume(SingleThreadIdx, NULL, DbgContinue);
else {DBGMSG("miContinueDebugEvent: Thread ID not found: ThId=%u",dwThreadId);}
}
else res = (this->ThList.DbgEventCnt > 0)?0:(int)this->ThList.ResumeAllThreads(dwThreadId, SingleThreadIdx, DbgContinue);
this->ThList.UnLock(); // What if this thread will be terminatred by NtTerminateProcess before UnLock?
if(res < 0){DBGMSG("miContinueDebugEvent: DoResumeThread(s) failed: ThId=%u, Err=%i",dwThreadId,res);}
this->DispatchDebugEvents(true); // Dispatch any queued debug events