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![jimtabor](/assets/img/avatar_default.png)
This callback works. Haven't commit the rest yet. Still thinking about the data packets types and shapes. Using wordpad to test this. It works, loads and unloads due to incomplete driver support and no PDEV. It crashes in ComCtl32 while loading a text file. When this gets committed without a solution, the code will be commented out.
714 lines
21 KiB
C
714 lines
21 KiB
C
#include <user32.h>
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#include <ndk/cmfuncs.h>
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#define MAX_USER_MODE_DRV_BUFFER 526
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//
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// UMPD Packet Header should match win32ss/include/ntumpd.h
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//
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typedef struct _UMPDPKTHEAD
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{
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INT Size;
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INT Index;
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INT RetSize;
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DWORD Reserved;
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HUMPD humpd;
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ULONG_PTR Buffer[];
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} UMPDPKTHEAD, *PUMPDPKTHEAD;
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INT WINAPI GdiPrinterThunk(PUMPDPKTHEAD,PVOID,INT);
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WINE_DEFAULT_DEBUG_CHANNEL(user32);
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#define KEY_LENGTH 1024
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static ULONG User32TlsIndex;
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HINSTANCE User32Instance;
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PPROCESSINFO g_ppi = NULL;
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PUSER_HANDLE_TABLE gHandleTable = NULL;
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PUSER_HANDLE_ENTRY gHandleEntries = NULL;
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PSERVERINFO gpsi = NULL;
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SHAREDINFO gSharedInfo = {0};
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ULONG_PTR g_ulSharedDelta;
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BOOLEAN gfLogonProcess = FALSE;
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BOOLEAN gfServerProcess = FALSE;
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BOOLEAN gfFirstThread = TRUE;
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HICON hIconSmWindows = NULL, hIconWindows = NULL;
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WCHAR szAppInit[KEY_LENGTH];
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BOOL
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GetDllList(VOID)
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{
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NTSTATUS Status;
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OBJECT_ATTRIBUTES Attributes;
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BOOL bRet = FALSE;
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BOOL bLoad;
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HANDLE hKey = NULL;
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DWORD dwSize;
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PKEY_VALUE_PARTIAL_INFORMATION kvpInfo = NULL;
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UNICODE_STRING szKeyName = RTL_CONSTANT_STRING(L"\\Registry\\Machine\\Software\\Microsoft\\Windows NT\\CurrentVersion\\Windows");
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UNICODE_STRING szLoadName = RTL_CONSTANT_STRING(L"LoadAppInit_DLLs");
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UNICODE_STRING szDllsName = RTL_CONSTANT_STRING(L"AppInit_DLLs");
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InitializeObjectAttributes(&Attributes, &szKeyName, OBJ_CASE_INSENSITIVE, NULL, NULL);
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Status = NtOpenKey(&hKey, KEY_READ, &Attributes);
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if (NT_SUCCESS(Status))
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{
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dwSize = sizeof(KEY_VALUE_PARTIAL_INFORMATION) + sizeof(DWORD);
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kvpInfo = HeapAlloc(GetProcessHeap(), 0, dwSize);
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if (!kvpInfo)
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goto end;
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Status = NtQueryValueKey(hKey,
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&szLoadName,
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KeyValuePartialInformation,
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kvpInfo,
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dwSize,
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&dwSize);
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if (!NT_SUCCESS(Status))
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goto end;
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RtlMoveMemory(&bLoad,
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kvpInfo->Data,
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kvpInfo->DataLength);
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HeapFree(GetProcessHeap(), 0, kvpInfo);
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kvpInfo = NULL;
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if (bLoad)
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{
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Status = NtQueryValueKey(hKey,
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&szDllsName,
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KeyValuePartialInformation,
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NULL,
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0,
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&dwSize);
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if (Status != STATUS_BUFFER_TOO_SMALL)
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goto end;
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kvpInfo = HeapAlloc(GetProcessHeap(), 0, dwSize);
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if (!kvpInfo)
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goto end;
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Status = NtQueryValueKey(hKey,
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&szDllsName,
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KeyValuePartialInformation,
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kvpInfo,
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dwSize,
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&dwSize);
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if (NT_SUCCESS(Status))
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{
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LPWSTR lpBuffer = (LPWSTR)kvpInfo->Data;
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if (*lpBuffer != UNICODE_NULL)
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{
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INT bytesToCopy, nullPos;
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bytesToCopy = min(kvpInfo->DataLength, KEY_LENGTH * sizeof(WCHAR));
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if (bytesToCopy != 0)
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{
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RtlMoveMemory(szAppInit,
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kvpInfo->Data,
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bytesToCopy);
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nullPos = (bytesToCopy / sizeof(WCHAR)) - 1;
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/* ensure string is terminated */
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szAppInit[nullPos] = UNICODE_NULL;
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bRet = TRUE;
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}
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}
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}
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}
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}
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end:
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if (hKey)
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NtClose(hKey);
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if (kvpInfo)
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HeapFree(GetProcessHeap(), 0, kvpInfo);
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return bRet;
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}
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VOID
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LoadAppInitDlls(VOID)
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{
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szAppInit[0] = UNICODE_NULL;
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if (GetDllList())
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{
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WCHAR buffer[KEY_LENGTH];
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LPWSTR ptr;
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size_t i;
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RtlCopyMemory(buffer, szAppInit, KEY_LENGTH * sizeof(WCHAR) );
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for (i = 0; i < KEY_LENGTH; ++ i)
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{
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if(buffer[i] == L' ' || buffer[i] == L',')
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buffer[i] = 0;
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}
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for (i = 0; i < KEY_LENGTH; )
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{
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if(buffer[i] == 0)
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++ i;
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else
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{
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ptr = buffer + i;
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i += wcslen(ptr);
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LoadLibraryW(ptr);
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}
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}
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}
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}
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VOID
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UnloadAppInitDlls(VOID)
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{
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if (szAppInit[0] != UNICODE_NULL)
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{
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WCHAR buffer[KEY_LENGTH];
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HMODULE hModule;
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LPWSTR ptr;
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size_t i;
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RtlCopyMemory(buffer, szAppInit, KEY_LENGTH * sizeof(WCHAR));
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for (i = 0; i < KEY_LENGTH; ++ i)
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{
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if(buffer[i] == L' ' || buffer[i] == L',')
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buffer[i] = 0;
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}
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for (i = 0; i < KEY_LENGTH; )
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{
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if(buffer[i] == 0)
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++ i;
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else
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{
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ptr = buffer + i;
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i += wcslen(ptr);
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hModule = GetModuleHandleW(ptr);
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FreeLibrary(hModule);
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}
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}
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}
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}
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PVOID apfnDispatch[USER32_CALLBACK_MAXIMUM + 1] =
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{
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User32CallWindowProcFromKernel,
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User32CallSendAsyncProcForKernel,
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User32LoadSysMenuTemplateForKernel,
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User32SetupDefaultCursors,
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User32CallHookProcFromKernel,
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User32CallEventProcFromKernel,
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User32CallLoadMenuFromKernel,
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User32CallClientThreadSetupFromKernel,
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User32CallClientLoadLibraryFromKernel,
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User32CallGetCharsetInfo,
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User32CallCopyImageFromKernel,
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User32CallSetWndIconsFromKernel,
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User32DeliverUserAPC,
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User32CallDDEPostFromKernel,
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User32CallDDEGetFromKernel,
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User32CallOBMFromKernel,
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User32CallLPKFromKernel,
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User32CallUMPDFromKernel,
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};
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VOID
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WINAPI
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GdiProcessSetup(VOID);
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BOOL
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WINAPI
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ClientThreadSetupHelper(BOOL IsCallback)
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{
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/*
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* Normally we are called by win32k so the win32 thread pointers
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* should be valid as they are set in win32k::InitThreadCallback.
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*/
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PCLIENTINFO ClientInfo = GetWin32ClientInfo();
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BOOLEAN IsFirstThread = _InterlockedExchange8((PCHAR)&gfFirstThread, FALSE);
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TRACE("In ClientThreadSetup(IsCallback == %s, gfServerProcess = %s, IsFirstThread = %s)\n",
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IsCallback ? "TRUE" : "FALSE", gfServerProcess ? "TRUE" : "FALSE", IsFirstThread ? "TRUE" : "FALSE");
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if (IsFirstThread)
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GdiProcessSetup();
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/* Check for already initialized thread, and bail out if so */
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if (ClientInfo->CI_flags & CI_INITTHREAD)
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{
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ERR("ClientThreadSetup: Thread already initialized.\n");
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return FALSE;
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}
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/*
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* CSRSS couldn't use user32::DllMain CSR server-to-server call to connect
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* to win32k. So it is delayed to a manually-call to ClientThreadSetup.
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* Also this needs to be done only for the first thread (since the connection
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* is per-process).
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*/
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if (gfServerProcess && IsFirstThread)
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{
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NTSTATUS Status;
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USERCONNECT UserCon;
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RtlZeroMemory(&UserCon, sizeof(UserCon));
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/* Minimal setup of the connect info structure */
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UserCon.ulVersion = USER_VERSION;
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/* Connect to win32k */
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Status = NtUserProcessConnect(NtCurrentProcess(),
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&UserCon,
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sizeof(UserCon));
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if (!NT_SUCCESS(Status)) return FALSE;
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/* Retrieve data */
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g_ppi = ClientInfo->ppi; // Snapshot PI, used as pointer only!
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g_ulSharedDelta = UserCon.siClient.ulSharedDelta;
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gpsi = SharedPtrToUser(UserCon.siClient.psi);
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gHandleTable = SharedPtrToUser(UserCon.siClient.aheList);
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gHandleEntries = SharedPtrToUser(gHandleTable->handles);
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gSharedInfo = UserCon.siClient;
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// ERR("1 SI 0x%x : HT 0x%x : D 0x%x\n", UserCon.siClient.psi, UserCon.siClient.aheList, g_ulSharedDelta);
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}
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TRACE("Checkpoint (register PFN)\n");
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if (!RegisterClientPFN())
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{
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ERR("RegisterClientPFN failed\n");
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return FALSE;
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}
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/* Mark this thread as initialized */
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ClientInfo->CI_flags |= CI_INITTHREAD;
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/* Initialization that should be done once per process */
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if (IsFirstThread)
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{
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TRACE("Checkpoint (Allocating TLS)\n");
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/* Allocate an index for user32 thread local data */
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User32TlsIndex = TlsAlloc();
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if (User32TlsIndex == TLS_OUT_OF_INDEXES)
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return FALSE;
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// HAAAAAAAAAACK!!!!!!
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// ASSERT(gpsi);
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if (!gpsi) ERR("AAAAAAAAAAAHHHHHHHHHHHHHH!!!!!!!! gpsi == NULL !!!!\n");
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if (gpsi)
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{
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TRACE("Checkpoint (MessageInit)\n");
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if (MessageInit())
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{
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TRACE("Checkpoint (MenuInit)\n");
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if (MenuInit())
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{
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TRACE("Checkpoint initialization done OK\n");
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InitializeCriticalSection(&U32AccelCacheLock);
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LoadAppInitDlls();
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return TRUE;
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}
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MessageCleanup();
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}
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TlsFree(User32TlsIndex);
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return FALSE;
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}
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}
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return TRUE;
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}
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/*
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* @implemented
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*/
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BOOL
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WINAPI
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ClientThreadSetup(VOID)
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{
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//
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// This routine, in Windows, does a lot of what Init does, but in a radically
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// different way.
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//
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// In Windows, because CSRSS's threads have TIF_CSRSSTHREAD set (we have this
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// flag in ROS but not sure if we use it), the xxxClientThreadSetup callback
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// isn't made when CSRSS first loads WINSRV.DLL (which loads USER32.DLL).
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//
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// However, all the other calls are made as normal, and WINSRV.DLL loads
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// USER32.dll, the DllMain runs, and eventually the first NtUser system call is
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// made which initializes Win32k (and initializes the thread, but as mentioned
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// above, the thread is marked as TIF_CSRSSTHREAD).
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//
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// In the DllMain of User32, there is also a CsrClientConnectToServer call to
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// server 2 (winsrv). When this is done from CSRSS, the "InServer" flag is set,
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// so user32 will remember that it's running inside of CSRSS. Also, another
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// flag, called "FirstThread" is manually set by DllMain.
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//
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// Then, WINSRV finishes loading, and CSRSRV starts the API thread/loop. This
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// code then calls CsrConnectToUser, which calls... ClientThreadStartup. Now
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// this routine detects that it's in the server process, which means it's CSRSS
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// and that the callback never happened. It does some first-time-Win32k connection
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// initialization and caches a bunch of things -- if it's the first thread. It also
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// acquires a critical section to initialize GDI -- and then resets the first thread
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// flag.
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//
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// For now, we'll do none of this, but to support Windows' CSRSRV.DLL which calls
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// CsrConnectToUser, we'll pretend we "did something" here. Then the rest will
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// continue as normal.
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//
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// FIXME: Disabling this call is a HACK!! See also User32CallClientThreadSetupFromKernel...
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// return ClientThreadSetupHelper(FALSE);
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TRACE("ClientThreadSetup is not implemented\n");
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return TRUE;
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}
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BOOL
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Init(PUSERCONNECT UserCon /*PUSERSRV_API_CONNECTINFO*/)
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{
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NTSTATUS Status = STATUS_SUCCESS;
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TRACE("user32::Init(0x%p) -->\n", UserCon);
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RtlInitializeCriticalSection(&gcsUserApiHook);
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/* Initialize callback table in PEB data */
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NtCurrentPeb()->KernelCallbackTable = apfnDispatch;
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NtCurrentPeb()->PostProcessInitRoutine = NULL;
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// This is a HACK!! //
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gfServerProcess = FALSE;
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gfFirstThread = TRUE;
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//// End of HACK!! ///
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/*
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* Retrieve data from the connect info structure if the initializing
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* process is not CSRSS. In case it is, this will be done from inside
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* ClientThreadSetup.
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*/
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if (!gfServerProcess)
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{
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// FIXME: HACK!! We should fixup for the NtUserProcessConnect fixups
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// because it was made in the context of CSRSS process and not ours!!
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// So... as long as we don't fix that, we need to redo again a call
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// to NtUserProcessConnect... How perverse is that?!
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//
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// HACK(2): This call is necessary since we disabled
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// the CSR call in DllMain...
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{
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RtlZeroMemory(UserCon, sizeof(*UserCon));
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/* Minimal setup of the connect info structure */
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UserCon->ulVersion = USER_VERSION;
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TRACE("HACK: Hackish NtUserProcessConnect call!!\n");
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/* Connect to win32k */
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Status = NtUserProcessConnect(NtCurrentProcess(),
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UserCon,
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sizeof(*UserCon));
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if (!NT_SUCCESS(Status)) return FALSE;
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}
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//
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// We continue as we should do normally...
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//
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/* Retrieve data */
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g_ppi = GetWin32ClientInfo()->ppi; // Snapshot PI, used as pointer only!
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g_ulSharedDelta = UserCon->siClient.ulSharedDelta;
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gpsi = SharedPtrToUser(UserCon->siClient.psi);
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gHandleTable = SharedPtrToUser(UserCon->siClient.aheList);
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gHandleEntries = SharedPtrToUser(gHandleTable->handles);
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gSharedInfo = UserCon->siClient;
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}
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// FIXME: Yet another hack... This call should normally not be done here, but
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// instead in ClientThreadSetup, and in User32CallClientThreadSetupFromKernel as well.
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TRACE("HACK: Using Init-ClientThreadSetupHelper hack!!\n");
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if (!ClientThreadSetupHelper(FALSE))
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{
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TRACE("Init-ClientThreadSetupHelper hack failed!\n");
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return FALSE;
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}
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TRACE("<-- user32::Init()\n");
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return NT_SUCCESS(Status);
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}
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VOID
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Cleanup(VOID)
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{
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UnloadAppInitDlls();
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DeleteCriticalSection(&U32AccelCacheLock);
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MenuCleanup();
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MessageCleanup();
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TlsFree(User32TlsIndex);
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DeleteFrameBrushes();
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}
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INT WINAPI
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DllMain(
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IN PVOID hInstanceDll,
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IN ULONG dwReason,
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IN PVOID reserved)
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{
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switch (dwReason)
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{
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case DLL_PROCESS_ATTACH:
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{
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#define WIN_OBJ_DIR L"\\Windows"
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#define SESSION_DIR L"\\Sessions"
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USERSRV_API_CONNECTINFO ConnectInfo; // USERCONNECT
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#if 0 // Disabling this code is a BIG HACK!!
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NTSTATUS Status;
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ULONG ConnectInfoSize = sizeof(ConnectInfo);
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WCHAR SessionDir[256];
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/* Cache the PEB and Session ID */
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PPEB Peb = NtCurrentPeb();
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ULONG SessionId = Peb->SessionId; // gSessionId
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TRACE("user32::DllMain\n");
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/* Don't bother us for each thread */
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DisableThreadLibraryCalls(hInstanceDll);
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RtlZeroMemory(&ConnectInfo, sizeof(ConnectInfo));
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/* Minimal setup of the connect info structure */
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ConnectInfo.ulVersion = USER_VERSION;
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/* Setup the Object Directory path */
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if (!SessionId)
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{
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/* Use the raw path */
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wcscpy(SessionDir, WIN_OBJ_DIR);
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}
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else
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{
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/* Use the session path */
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swprintf(SessionDir,
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L"%ws\\%ld%ws",
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SESSION_DIR,
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SessionId,
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WIN_OBJ_DIR);
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}
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TRACE("Checkpoint (call CSR)\n");
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/* Connect to the USER Server */
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Status = CsrClientConnectToServer(SessionDir,
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USERSRV_SERVERDLL_INDEX,
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&ConnectInfo,
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&ConnectInfoSize,
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&gfServerProcess);
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if (!NT_SUCCESS(Status))
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{
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ERR("Failed to connect to CSR (Status %lx)\n", Status);
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return FALSE;
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}
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TRACE("Checkpoint (CSR called)\n");
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#endif
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User32Instance = hInstanceDll;
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/* Finish initialization */
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TRACE("Checkpoint (call Init)\n");
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if (!Init(&ConnectInfo))
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return FALSE;
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if (!gfServerProcess)
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{
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#if WIN32K_ISNT_BROKEN
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InitializeImmEntryTable();
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#else
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/* imm32 takes a refcount and prevents us from unloading */
|
|
LoadLibraryW(L"user32");
|
|
#endif
|
|
//
|
|
// Wine is stub and throws an exception so save this for real Imm32.dll testing!!!!
|
|
//
|
|
//gImmApiEntries.pImmRegisterClient(&gSharedInfo, ghImm32);
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case DLL_PROCESS_DETACH:
|
|
{
|
|
if (ghImm32)
|
|
FreeLibrary(ghImm32);
|
|
|
|
Cleanup();
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Finally, initialize GDI */
|
|
return GdiDllInitialize(hInstanceDll, dwReason, reserved);
|
|
}
|
|
|
|
NTSTATUS
|
|
WINAPI
|
|
User32CallClientThreadSetupFromKernel(PVOID Arguments, ULONG ArgumentLength)
|
|
{
|
|
TRACE("User32CallClientThreadSetupFromKernel -->\n");
|
|
// FIXME: Disabling this call is a HACK!! See also ClientThreadSetup...
|
|
// ClientThreadSetupHelper(TRUE);
|
|
TRACE("<-- User32CallClientThreadSetupFromKernel\n");
|
|
return ZwCallbackReturn(NULL, 0, STATUS_SUCCESS);
|
|
}
|
|
|
|
NTSTATUS
|
|
WINAPI
|
|
User32CallGetCharsetInfo(PVOID Arguments, ULONG ArgumentLength)
|
|
{
|
|
BOOL Ret;
|
|
PGET_CHARSET_INFO pgci = (PGET_CHARSET_INFO)Arguments;
|
|
|
|
TRACE("GetCharsetInfo\n");
|
|
|
|
Ret = TranslateCharsetInfo((DWORD *)(ULONG_PTR)pgci->Locale, &pgci->Cs, TCI_SRCLOCALE);
|
|
|
|
return ZwCallbackReturn(Arguments, ArgumentLength, Ret ? STATUS_SUCCESS : STATUS_UNSUCCESSFUL);
|
|
}
|
|
|
|
NTSTATUS
|
|
WINAPI
|
|
User32CallSetWndIconsFromKernel(PVOID Arguments, ULONG ArgumentLength)
|
|
{
|
|
PSETWNDICONS_CALLBACK_ARGUMENTS Common = Arguments;
|
|
|
|
if (!gpsi->hIconSmWindows)
|
|
{
|
|
Common->hIconSample = LoadImageW(0, IDI_APPLICATION, IMAGE_ICON, 0, 0, LR_DEFAULTSIZE);
|
|
Common->hIconHand = LoadImageW(0, IDI_HAND, IMAGE_ICON, 0, 0, LR_DEFAULTSIZE);
|
|
Common->hIconQuestion = LoadImageW(0, IDI_QUESTION, IMAGE_ICON, 0, 0, LR_DEFAULTSIZE);
|
|
Common->hIconBang = LoadImageW(0, IDI_EXCLAMATION, IMAGE_ICON, 0, 0, LR_DEFAULTSIZE);
|
|
Common->hIconNote = LoadImageW(0, IDI_ASTERISK, IMAGE_ICON, 0, 0, LR_DEFAULTSIZE);
|
|
Common->hIconWindows = LoadImageW(0, IDI_WINLOGO, IMAGE_ICON, 0, 0, LR_DEFAULTSIZE);
|
|
Common->hIconSmWindows = LoadImageW(0, IDI_WINLOGO, IMAGE_ICON, GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON), 0);
|
|
hIconWindows = Common->hIconWindows;
|
|
hIconSmWindows = Common->hIconSmWindows;
|
|
}
|
|
ERR("hIconSmWindows %p hIconWindows %p \n",hIconSmWindows,hIconWindows);
|
|
return ZwCallbackReturn(Arguments, ArgumentLength, STATUS_SUCCESS);
|
|
}
|
|
|
|
NTSTATUS
|
|
WINAPI
|
|
User32DeliverUserAPC(PVOID Arguments, ULONG ArgumentLength)
|
|
{
|
|
return ZwCallbackReturn(0, 0, STATUS_SUCCESS);
|
|
}
|
|
|
|
NTSTATUS
|
|
WINAPI
|
|
User32CallOBMFromKernel(PVOID Arguments, ULONG ArgumentLength)
|
|
{
|
|
BITMAP bmp;
|
|
PSETOBM_CALLBACK_ARGUMENTS Common = Arguments;
|
|
|
|
GetObjectW(LoadBitmapW(0, MAKEINTRESOURCEW(OBM_CLOSE)), sizeof(bmp), &bmp);
|
|
Common->oembmi[OBI_CLOSE].cx = bmp.bmWidth;
|
|
Common->oembmi[OBI_CLOSE].cy = bmp.bmHeight;
|
|
|
|
GetObjectW(LoadBitmapW(0, MAKEINTRESOURCEW(OBM_MNARROW)), sizeof(bmp), &bmp);
|
|
Common->oembmi[OBI_MNARROW].cx = bmp.bmWidth;
|
|
Common->oembmi[OBI_MNARROW].cy = bmp.bmHeight;
|
|
|
|
GetObjectW(LoadBitmapW(0, MAKEINTRESOURCEW(OBM_DNARROW)), sizeof(bmp), &bmp);
|
|
Common->oembmi[OBI_DNARROW].cx = bmp.bmWidth;
|
|
Common->oembmi[OBI_DNARROW].cy = bmp.bmHeight;
|
|
|
|
GetObjectW(LoadBitmapW(0, MAKEINTRESOURCEW(OBM_DNARROWI)), sizeof(bmp), &bmp);
|
|
Common->oembmi[OBI_DNARROWI].cx = bmp.bmWidth;
|
|
Common->oembmi[OBI_DNARROWI].cy = bmp.bmHeight;
|
|
|
|
GetObjectW(LoadBitmapW(0, MAKEINTRESOURCEW(OBM_UPARROW)), sizeof(bmp), &bmp);
|
|
Common->oembmi[OBI_UPARROW].cx = bmp.bmWidth;
|
|
Common->oembmi[OBI_UPARROW].cy = bmp.bmHeight;
|
|
|
|
GetObjectW(LoadBitmapW(0, MAKEINTRESOURCEW(OBM_UPARROWI)), sizeof(bmp), &bmp);
|
|
Common->oembmi[OBI_UPARROWI].cx = bmp.bmWidth;
|
|
Common->oembmi[OBI_UPARROWI].cy = bmp.bmHeight;
|
|
|
|
return ZwCallbackReturn(Arguments, ArgumentLength, STATUS_SUCCESS);
|
|
}
|
|
|
|
NTSTATUS WINAPI User32CallLPKFromKernel(PVOID Arguments, ULONG ArgumentLength)
|
|
{
|
|
BOOL bResult;
|
|
PLPK_CALLBACK_ARGUMENTS Argument;
|
|
|
|
Argument = (PLPK_CALLBACK_ARGUMENTS)Arguments;
|
|
|
|
Argument->lpString = (LPWSTR)((ULONG_PTR)Argument->lpString + (ULONG_PTR)Argument);
|
|
|
|
bResult = ExtTextOutW(Argument->hdc,
|
|
Argument->x,
|
|
Argument->y,
|
|
Argument->flags,
|
|
(Argument->bRect) ? &Argument->rect : NULL,
|
|
Argument->lpString,
|
|
Argument->count,
|
|
NULL);
|
|
|
|
return ZwCallbackReturn(&bResult, sizeof(BOOL), STATUS_SUCCESS);
|
|
}
|
|
|
|
NTSTATUS WINAPI User32CallUMPDFromKernel(PVOID Arguments, ULONG ArgumentLength)
|
|
{
|
|
DWORD Buffer[MAX_USER_MODE_DRV_BUFFER];
|
|
INT cbSize = 0;
|
|
NTSTATUS Status = STATUS_SUCCESS;
|
|
PUMPDPKTHEAD pkt, pktOut = NULL;
|
|
|
|
pkt = (PUMPDPKTHEAD)Arguments;
|
|
|
|
if ( pkt->RetSize <= sizeof(Buffer) )
|
|
{
|
|
pktOut = (PUMPDPKTHEAD)Buffer;
|
|
|
|
if ( (GdiPrinterThunk( pkt, pktOut, pkt->RetSize ) == GDI_ERROR) )
|
|
{
|
|
pktOut = NULL;
|
|
Status = STATUS_UNSUCCESSFUL;
|
|
}
|
|
else
|
|
{
|
|
cbSize = pkt->RetSize;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Status = STATUS_NO_MEMORY;
|
|
}
|
|
return ZwCallbackReturn( pktOut, cbSize, Status );
|
|
}
|