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768 lines
18 KiB
768 lines
18 KiB
/*++
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Copyright (c) 1996 Microsoft Corporation
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Module Name:
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leaks.c
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Abstract:
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A filter DLL for trying to detect memory, event, registry, and
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token handle leaks.
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Author:
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Charlie Wickham/Rod Gamache
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Revision History:
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--*/
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#define _ADVAPI32_
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#define _KERNEL32_
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#include <windows.h>
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#include <stdio.h>
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#include "clusrtl.h"
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#include "leaks.h"
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HINSTANCE Kernel32Handle;
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HINSTANCE Advapi32Handle;
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FARPROC SystemLocalAlloc;
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FARPROC SystemLocalFree;
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FARPROC SystemCreateEventA;
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FARPROC SystemCreateEventW;
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FARPROC SystemRegOpenKeyA;
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FARPROC SystemRegOpenKeyW;
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FARPROC SystemRegOpenKeyExA;
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FARPROC SystemRegOpenKeyExW;
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FARPROC SystemRegCreateKeyA;
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FARPROC SystemRegCreateKeyW;
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FARPROC SystemRegCreateKeyExA;
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FARPROC SystemRegCreateKeyExW;
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FARPROC SystemRegCloseKey;
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FARPROC SystemOpenProcessToken;
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FARPROC SystemOpenThreadToken;
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FARPROC SystemDuplicateToken;
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FARPROC SystemDuplicateTokenEx;
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FARPROC SystemCloseHandle;
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#define SetSystemPointer( _h, _n ) \
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System##_n = GetProcAddress( _h, #_n );
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BOOL LeaksVerbose = FALSE;
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HANDLE_TABLE HandleTable[ MAX_HANDLE / HANDLE_DELTA ];
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BOOLEAN
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WINAPI
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LeaksDllEntry(
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IN HINSTANCE DllHandle,
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IN DWORD Reason,
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IN LPVOID Reserved
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)
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/*++
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Routine Description:
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Main DLL entrypoint
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Arguments:
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DllHandle - Supplies the DLL handle.
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Reason - Supplies the call reason
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Return Value:
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TRUE if successful
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FALSE if unsuccessful
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--*/
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{
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if (Reason == DLL_PROCESS_ATTACH) {
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DisableThreadLibraryCalls(DllHandle);
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ClRtlInitialize( TRUE, NULL );
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//
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// get pointers to the real functions
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//
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Kernel32Handle = LoadLibrary( "kernel32.dll" );
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Advapi32Handle = LoadLibrary( "advapi32.dll" );
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SetSystemPointer( Kernel32Handle, LocalAlloc );
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SetSystemPointer( Kernel32Handle, LocalFree );
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SetSystemPointer( Kernel32Handle, CreateEventA );
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SetSystemPointer( Kernel32Handle, CreateEventW );
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SetSystemPointer( Advapi32Handle, RegOpenKeyA );
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SetSystemPointer( Advapi32Handle, RegOpenKeyW );
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SetSystemPointer( Advapi32Handle, RegOpenKeyExA );
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SetSystemPointer( Advapi32Handle, RegOpenKeyExW );
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SetSystemPointer( Advapi32Handle, RegCreateKeyA );
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SetSystemPointer( Advapi32Handle, RegCreateKeyW );
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SetSystemPointer( Advapi32Handle, RegCreateKeyExA );
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SetSystemPointer( Advapi32Handle, RegCreateKeyExW );
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SetSystemPointer( Advapi32Handle, RegCloseKey );
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SetSystemPointer( Advapi32Handle, OpenProcessToken );
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SetSystemPointer( Advapi32Handle, OpenThreadToken );
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SetSystemPointer( Advapi32Handle, DuplicateToken );
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SetSystemPointer( Advapi32Handle, DuplicateTokenEx );
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SetSystemPointer( Kernel32Handle, CloseHandle );
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}
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return(TRUE);
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}
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HLOCAL
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WINAPI
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LEAKS_LocalAlloc(
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UINT uFlags,
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SIZE_T uBytes
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)
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{
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HLOCAL memory;
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PMEM_HDR memHdr;
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PVOID callersAddress;
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PVOID callersCaller;
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RtlGetCallersAddress(
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&callersAddress,
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&callersCaller );
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memHdr = (PVOID)(*SystemLocalAlloc)( uFlags, uBytes + sizeof(MEM_HDR) );
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if ( !memHdr ) {
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return NULL;
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}
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memHdr->Signature = HEAP_SIGNATURE_ALLOC;
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memHdr->CallersAddress = callersAddress;
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memHdr->CallersCaller = callersCaller;
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return(memHdr+1);
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}
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HLOCAL
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WINAPI
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LEAKS_LocalFree(
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HLOCAL hMem
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)
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{
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PMEM_HDR memHdr = hMem;
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PVOID callersAddress;
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PVOID callersCaller;
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CHAR buf[128];
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if ( memHdr ) {
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--memHdr;
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if ( memHdr->Signature == HEAP_SIGNATURE_FREE ) {
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sprintf( buf, "Freeing %p a 2nd time!\n", memHdr );
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OutputDebugString( buf );
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DebugBreak();
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} else if ( memHdr->Signature == HEAP_SIGNATURE_ALLOC ) {
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RtlGetCallersAddress(&callersAddress,
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&callersCaller );
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memHdr->Signature = HEAP_SIGNATURE_FREE;
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memHdr->CallersAddress = callersAddress;
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memHdr->CallersCaller = callersCaller;
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} else {
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memHdr++;
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}
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} else {
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#if 0
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sprintf( buf, "Passing NULL to LocalFree, tsk, tsk, tsk!!\n" );
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OutputDebugString( buf );
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DebugBreak();
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#endif
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}
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return( (HLOCAL)(*SystemLocalFree)(memHdr) );
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}
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HANDLE
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WINAPI
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LEAKS_CreateEventA(
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LPSECURITY_ATTRIBUTES lpEventAttributes,
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BOOL bManualReset,
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BOOL bInitialState,
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LPCSTR lpName
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)
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{
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HANDLE handle;
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PVOID callersAddress;
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PVOID callersCaller;
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handle = (HANDLE)(*SystemCreateEventA)(
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lpEventAttributes,
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bManualReset,
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bInitialState,
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lpName
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);
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if ( handle != NULL ) {
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SetHandleTable( handle, TRUE, LeaksEvent );
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}
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if ( LeaksVerbose ) {
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ClRtlLogPrint(LOG_NOISE, "[LEAKS] CreateEventA returns handle %1!X!, called from %2!X! and %3!X!\n",
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handle,
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callersAddress,
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callersCaller );
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}
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return(handle);
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} // CreateEventA
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HANDLE
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WINAPI
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LEAKS_CreateEventW(
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LPSECURITY_ATTRIBUTES lpEventAttributes,
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BOOL bManualReset,
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BOOL bInitialState,
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LPCWSTR lpName
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)
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{
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HANDLE handle;
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PVOID callersAddress;
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PVOID callersCaller;
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handle = (HANDLE)(*SystemCreateEventW)(
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lpEventAttributes,
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bManualReset,
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bInitialState,
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lpName
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);
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if ( handle != NULL ) {
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SetHandleTable( handle, TRUE, LeaksEvent );
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}
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if ( LeaksVerbose ) {
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ClRtlLogPrint(LOG_NOISE,"[LEAKS] CreateEventW returns handle %1!X!, called from %2!X! and %3!X!\n",
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handle,
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callersAddress,
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callersCaller );
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}
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return(handle);
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} // CreateEventW
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LONG
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APIENTRY
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LEAKS_RegOpenKeyA(
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HKEY hKey,
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LPCSTR lpSubKey,
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PHKEY phkResult
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)
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{
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LONG status;
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PVOID callersAddress;
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PVOID callersCaller;
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status = (LONG)(*SystemRegOpenKeyA)(
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hKey,
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lpSubKey,
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phkResult
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);
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if ( status == ERROR_SUCCESS ) {
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SetHandleTable( *phkResult, TRUE, LeaksRegistry );
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}
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if ( LeaksVerbose ) {
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ClRtlLogPrint(LOG_NOISE,"[LEAKS] RegOpenKeyA returns key %1!X!, status %2!u!, called from %3!X! and %4!X!\n",
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*phkResult,
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status,
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callersAddress,
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callersCaller );
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}
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return(status);
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} // RegOpenKeyA
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LONG
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APIENTRY
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LEAKS_RegOpenKeyW(
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HKEY hKey,
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LPCWSTR lpSubKey,
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PHKEY phkResult
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)
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{
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LONG status;
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PVOID callersAddress;
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PVOID callersCaller;
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status = (LONG)(*SystemRegOpenKeyW)(
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hKey,
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lpSubKey,
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phkResult
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);
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if ( status == ERROR_SUCCESS ) {
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SetHandleTable( *phkResult, TRUE, LeaksRegistry );
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}
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if ( LeaksVerbose ) {
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ClRtlLogPrint(LOG_NOISE, "[LEAKS] RegOpenKeyW returns key %1!X!, status %2!u!, called from %3!X! and %4!X!\n",
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*phkResult,
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status,
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callersAddress,
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callersCaller );
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}
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return(status);
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} // RegOpenKeyW
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LONG
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APIENTRY
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LEAKS_RegOpenKeyExA(
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HKEY hKey,
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LPCSTR lpSubKey,
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DWORD ulOptions,
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REGSAM samDesired,
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PHKEY phkResult
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)
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{
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LONG status;
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PVOID callersAddress;
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PVOID callersCaller;
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status = (LONG)(*SystemRegOpenKeyExA)(
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hKey,
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lpSubKey,
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ulOptions,
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samDesired,
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phkResult
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);
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if ( status == ERROR_SUCCESS ) {
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SetHandleTable( *phkResult, TRUE, LeaksRegistry );
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}
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if ( LeaksVerbose ) {
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ClRtlLogPrint(LOG_NOISE, "[LEAKS] RegOpenKeyExA returns key %1!X!, status %2!u!, called from %3!X! and %4!X!\n",
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*phkResult,
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status,
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callersAddress,
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callersCaller );
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}
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return(status);
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} // RegOpenKeyExA
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LONG
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APIENTRY
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LEAKS_RegOpenKeyExW(
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HKEY hKey,
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LPCWSTR lpSubKey,
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DWORD ulOptions,
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REGSAM samDesired,
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PHKEY phkResult
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)
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{
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LONG status;
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PVOID callersAddress;
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PVOID callersCaller;
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status = (LONG)(*SystemRegOpenKeyExW)(
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hKey,
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lpSubKey,
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ulOptions,
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samDesired,
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phkResult
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);
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if ( status == ERROR_SUCCESS ) {
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SetHandleTable( *phkResult, TRUE, LeaksRegistry );
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}
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if ( LeaksVerbose ) {
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ClRtlLogPrint(LOG_NOISE, "[LEAKS] RegOpenKeyExW returns key %1!X!, status %2!u!, called from %3!X! and %4!X!\n",
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*phkResult,
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status,
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callersAddress,
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callersCaller );
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}
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return(status);
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} // RegOpenKeyExW
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LONG
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APIENTRY
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LEAKS_RegCreateKeyA(
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HKEY hKey,
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LPCSTR lpSubKey,
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PHKEY phkResult
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)
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{
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LONG status;
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PVOID callersAddress;
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PVOID callersCaller;
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status = (LONG)(*SystemRegCreateKeyA)(
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hKey,
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lpSubKey,
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phkResult
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);
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if ( status == ERROR_SUCCESS ) {
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SetHandleTable( *phkResult, TRUE, LeaksRegistry );
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}
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if ( LeaksVerbose ) {
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ClRtlLogPrint(LOG_NOISE, "[LEAKS] RegCreateKeyA returns key %1!X!, status %2!u!, called from %3!X! and %4!X!\n",
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*phkResult,
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status,
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callersAddress,
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callersCaller );
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}
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return(status);
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} // RegCreateKeyA
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LONG
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APIENTRY
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LEAKS_RegCreateKeyW(
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HKEY hKey,
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LPCWSTR lpSubKey,
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PHKEY phkResult
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)
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{
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LONG status;
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PVOID callersAddress;
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PVOID callersCaller;
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status = (LONG)(*SystemRegCreateKeyW)(
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hKey,
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lpSubKey,
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phkResult
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);
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if ( status == ERROR_SUCCESS ) {
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SetHandleTable( *phkResult, TRUE, LeaksRegistry );
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}
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if ( LeaksVerbose ) {
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ClRtlLogPrint(LOG_NOISE, "[LEAKS] RegCreateKeyW returns key %1!X!, status %2!u!, called from %3!X! and %4!X!\n",
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*phkResult,
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status,
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callersAddress,
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callersCaller );
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}
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return(status);
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} // RegCreateKeyW
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LONG
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APIENTRY
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LEAKS_RegCreateKeyExA(
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HKEY hKey,
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LPCSTR lpSubKey,
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DWORD Reserved,
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LPSTR lpClass,
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DWORD dwOptions,
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REGSAM samDesired,
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LPSECURITY_ATTRIBUTES lpSecurityAttributes,
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PHKEY phkResult,
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LPDWORD lpdwDisposition
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)
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{
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LONG status;
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PVOID callersAddress;
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PVOID callersCaller;
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status = (LONG)(*SystemRegCreateKeyExA)(hKey,
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lpSubKey,
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Reserved,
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lpClass,
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dwOptions,
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samDesired,
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lpSecurityAttributes,
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phkResult,
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lpdwDisposition
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);
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if ( status == ERROR_SUCCESS ) {
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SetHandleTable( *phkResult, TRUE, LeaksRegistry );
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}
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if ( LeaksVerbose ) {
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ClRtlLogPrint(LOG_NOISE, "[LEAKS] RegCreateKeyExA returns key %1!X!, status %2!u!, called from %3!X! and %4!X!\n",
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*phkResult,
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status,
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callersAddress,
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callersCaller );
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}
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return(status);
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} // RegCreateKeyExA
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LONG
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APIENTRY
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LEAKS_RegCreateKeyExW(
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HKEY hKey,
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LPCWSTR lpSubKey,
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DWORD Reserved,
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LPWSTR lpClass,
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DWORD dwOptions,
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REGSAM samDesired,
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LPSECURITY_ATTRIBUTES lpSecurityAttributes,
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PHKEY phkResult,
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LPDWORD lpdwDisposition
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)
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{
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LONG status;
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PVOID callersAddress;
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PVOID callersCaller;
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status = (LONG)(*SystemRegCreateKeyExW)(
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hKey,
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lpSubKey,
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Reserved,
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lpClass,
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dwOptions,
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samDesired,
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lpSecurityAttributes,
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phkResult,
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lpdwDisposition
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);
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if ( status == ERROR_SUCCESS ) {
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SetHandleTable( *phkResult, TRUE, LeaksRegistry );
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}
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if ( LeaksVerbose ) {
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ClRtlLogPrint(LOG_NOISE, "[LEAKS] RegCreateKeyExW returns key %1!X!, status %2!u!, called from %3!X! and %4!X!\n",
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*phkResult,
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status,
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callersAddress,
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callersCaller );
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}
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return(status);
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} // RegCreateKeyExW
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LONG
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APIENTRY
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LEAKS_RegCloseKey(
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HKEY hKey
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)
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{
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LONG status;
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PVOID callersAddress;
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PVOID callersCaller;
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status = (LONG)(*SystemRegCloseKey)( hKey );
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if ( status == ERROR_SUCCESS ) {
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SetHandleTable( hKey, FALSE, LeaksRegistry );
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}
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if ( LeaksVerbose ) {
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ClRtlLogPrint(LOG_NOISE, "[LEAKS] RegCloseKey for key %1!X! returns status %2!u!, called from %3!X! and %4!X!\n",
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hKey,
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status,
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callersAddress,
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callersCaller );
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}
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return(status);
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|
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} // RegCloseKey
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|
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BOOL
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WINAPI
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LEAKS_CloseHandle(
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IN OUT HANDLE hObject
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)
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{
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PVOID callersAddress;
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PVOID callersCaller;
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|
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if ( HandleTable[ HINDEX( hObject )].InUse ) {
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RtlGetCallersAddress(&callersAddress,
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&callersCaller );
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HandleTable[ HINDEX( hObject )].InUse = FALSE;
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HandleTable[ HINDEX( hObject )].Caller = callersAddress;
|
|
HandleTable[ HINDEX( hObject )].CallersCaller = callersCaller;
|
|
|
|
if ( LeaksVerbose ) {
|
|
ClRtlLogPrint(LOG_NOISE, "[LEAKS] CloseHandle for handle %1!X!, called from %2!X! and %3!X!\n",
|
|
hObject,
|
|
callersAddress,
|
|
callersCaller );
|
|
}
|
|
}
|
|
|
|
return (BOOL)(*SystemCloseHandle)( hObject );
|
|
}
|
|
|
|
BOOL
|
|
WINAPI
|
|
LEAKS_OpenProcessToken (
|
|
IN HANDLE ProcessHandle,
|
|
IN DWORD DesiredAccess,
|
|
OUT PHANDLE TokenHandle
|
|
)
|
|
{
|
|
BOOL status;
|
|
PVOID callersAddress;
|
|
PVOID callersCaller;
|
|
|
|
status = (BOOL)(*SystemOpenProcessToken)(ProcessHandle,
|
|
DesiredAccess,
|
|
TokenHandle);
|
|
|
|
if ( status ) {
|
|
SetHandleTable( *TokenHandle, TRUE, LeaksToken );
|
|
}
|
|
|
|
if ( LeaksVerbose ) {
|
|
ClRtlLogPrint(LOG_NOISE, "[LEAKS] OpenProcessToken returns handle %1!X!, status %2!u!, called from %3!X! and %4!X!\n",
|
|
*TokenHandle,
|
|
status,
|
|
callersAddress,
|
|
callersCaller );
|
|
}
|
|
|
|
return(status);
|
|
}
|
|
|
|
|
|
BOOL
|
|
WINAPI
|
|
LEAKS_OpenThreadToken (
|
|
IN HANDLE ThreadHandle,
|
|
IN DWORD DesiredAccess,
|
|
IN BOOL OpenAsSelf,
|
|
OUT PHANDLE TokenHandle
|
|
)
|
|
{
|
|
BOOL status;
|
|
PVOID callersAddress;
|
|
PVOID callersCaller;
|
|
|
|
status = (BOOL)(*SystemOpenThreadToken)(ThreadHandle,
|
|
DesiredAccess,
|
|
OpenAsSelf,
|
|
TokenHandle);
|
|
|
|
if ( status ) {
|
|
SetHandleTable( *TokenHandle, TRUE, LeaksToken );
|
|
}
|
|
|
|
if ( LeaksVerbose ) {
|
|
ClRtlLogPrint(LOG_NOISE, "[LEAKS] OpenThreadToken returns handle %1!X!, status %2!u!, called from %3!X! and %4!X!\n",
|
|
*TokenHandle,
|
|
status,
|
|
callersAddress,
|
|
callersCaller );
|
|
}
|
|
|
|
return(status);
|
|
}
|
|
|
|
BOOL
|
|
WINAPI
|
|
LEAKS_DuplicateToken(
|
|
IN HANDLE ExistingTokenHandle,
|
|
IN SECURITY_IMPERSONATION_LEVEL ImpersonationLevel,
|
|
OUT PHANDLE DuplicateTokenHandle
|
|
)
|
|
{
|
|
BOOL status;
|
|
PVOID callersAddress;
|
|
PVOID callersCaller;
|
|
|
|
status = (BOOL)(*SystemDuplicateToken)(ExistingTokenHandle,
|
|
ImpersonationLevel,
|
|
DuplicateTokenHandle);
|
|
|
|
if ( status ) {
|
|
SetHandleTable( *DuplicateTokenHandle, TRUE, LeaksToken );
|
|
}
|
|
|
|
if ( LeaksVerbose ) {
|
|
ClRtlLogPrint(LOG_NOISE, "[LEAKS] DuplicateToken returns handle %1!X!, status %2!u!, called from %3!X! and %4!X!\n",
|
|
*DuplicateTokenHandle,
|
|
status,
|
|
callersAddress,
|
|
callersCaller );
|
|
}
|
|
|
|
return(status);
|
|
}
|
|
|
|
BOOL
|
|
WINAPI
|
|
LEAKS_DuplicateTokenEx(
|
|
IN HANDLE hExistingToken,
|
|
IN DWORD dwDesiredAccess,
|
|
IN LPSECURITY_ATTRIBUTES lpTokenAttributes,
|
|
IN SECURITY_IMPERSONATION_LEVEL ImpersonationLevel,
|
|
IN TOKEN_TYPE TokenType,
|
|
OUT PHANDLE phNewToken)
|
|
{
|
|
BOOL status;
|
|
PVOID callersAddress;
|
|
PVOID callersCaller;
|
|
|
|
status = (BOOL)(*SystemDuplicateTokenEx)(hExistingToken,
|
|
dwDesiredAccess,
|
|
lpTokenAttributes,
|
|
ImpersonationLevel,
|
|
TokenType,
|
|
phNewToken);
|
|
|
|
if ( status ) {
|
|
SetHandleTable( *phNewToken, TRUE, LeaksToken );
|
|
}
|
|
|
|
if ( LeaksVerbose ) {
|
|
ClRtlLogPrint(LOG_NOISE, "[LEAKS] DuplicateTokenEx returns handle %1!X!, status %2!u!, called from %3!X! and %4!X!\n",
|
|
*phNewToken,
|
|
status,
|
|
callersAddress,
|
|
callersCaller );
|
|
}
|
|
|
|
return(status);
|
|
}
|