dll/win32/user32/misc/dllmain.c

   1 #include <user32.h>
   2
   3 #include <wine/debug.h>
   4 WINE_DEFAULT_DEBUG_CHANNEL(user32);
   5
   6 #define KEY_LENGTH 1024
   7
   8 static ULONG User32TlsIndex;
   9 HINSTANCE User32Instance;
  10
  11 PPROCESSINFO g_ppi = NULL;
  12 PUSER_HANDLE_TABLE gHandleTable = NULL;
  13 PUSER_HANDLE_ENTRY gHandleEntries = NULL;
  14 PSERVERINFO gpsi = NULL;
  15 ULONG_PTR g_ulSharedDelta;
  16 BOOL gfServerProcess = FALSE;
  17
  18 WCHAR szAppInit[KEY_LENGTH];
  19
  20 PUSER32_THREAD_DATA
  21 User32GetThreadData()
  22 {
  23    return ((PUSER32_THREAD_DATA)TlsGetValue(User32TlsIndex));
  24 }
  25
  26
  27 BOOL
  28 GetDllList()
  29 {
  30     NTSTATUS Status;
  31     OBJECT_ATTRIBUTES Attributes;
  32     BOOL bRet = FALSE;
  33     BOOL bLoad;
  34     HANDLE hKey = NULL;
  35     DWORD dwSize;
  36     PKEY_VALUE_PARTIAL_INFORMATION kvpInfo = NULL;
  37
  38     UNICODE_STRING szKeyName = RTL_CONSTANT_STRING(L"\\Registry\\Machine\\Software\\Microsoft\\Windows NT\\CurrentVersion\\Windows");
  39     UNICODE_STRING szLoadName = RTL_CONSTANT_STRING(L"LoadAppInit_DLLs");
  40     UNICODE_STRING szDllsName = RTL_CONSTANT_STRING(L"AppInit_DLLs");
  41
  42     InitializeObjectAttributes(&Attributes, &szKeyName, OBJ_CASE_INSENSITIVE, NULL, NULL);
  43     Status = NtOpenKey(&hKey, KEY_READ, &Attributes);
  44     if (NT_SUCCESS(Status))
  45     {
  46         dwSize = sizeof(KEY_VALUE_PARTIAL_INFORMATION) + sizeof(DWORD);
  47         kvpInfo = HeapAlloc(GetProcessHeap(), 0, dwSize);
  48         if (!kvpInfo)
  49             goto end;
  50
  51         Status = NtQueryValueKey(hKey,
  52                                  &szLoadName,
  53                                  KeyValuePartialInformation,
  54                                  kvpInfo,
  55                                  dwSize,
  56                                  &dwSize);
  57         if (!NT_SUCCESS(Status))
  58             goto end;
  59
  60         RtlMoveMemory(&bLoad,
  61                       kvpInfo->Data,
  62                       kvpInfo->DataLength);
  63
  64         HeapFree(GetProcessHeap(), 0, kvpInfo);
  65         kvpInfo = NULL;
  66
  67         if (bLoad)
  68         {
  69             Status = NtQueryValueKey(hKey,
  70                                      &szDllsName,
  71                                      KeyValuePartialInformation,
  72                                      NULL,
  73                                      0,
  74                                      &dwSize);
  75             if (Status != STATUS_BUFFER_TOO_SMALL)
  76                 goto end;
  77
  78             kvpInfo = HeapAlloc(GetProcessHeap(), 0, dwSize);
  79             if (!kvpInfo)
  80                 goto end;
  81
  82             Status = NtQueryValueKey(hKey,
  83                                      &szDllsName,
  84                                      KeyValuePartialInformation,
  85                                      kvpInfo,
  86                                      dwSize,
  87                                      &dwSize);
  88             if (NT_SUCCESS(Status))
  89             {
  90                 LPWSTR lpBuffer = (LPWSTR)kvpInfo->Data;
  91                 if (*lpBuffer != UNICODE_NULL)
  92                 {
  93                     INT bytesToCopy, nullPos;
  94
  95                     bytesToCopy = min(kvpInfo->DataLength, KEY_LENGTH * sizeof(WCHAR));
  96
  97                     if (bytesToCopy != 0)
  98                     {
  99                         RtlMoveMemory(szAppInit,
 100                                       kvpInfo->Data,
 101                                       bytesToCopy);
 102
 103                         nullPos = (bytesToCopy / sizeof(WCHAR)) - 1;
 104
 105                         /* ensure string is terminated */
 106                         szAppInit[nullPos] = UNICODE_NULL;
 107
 108                         bRet = TRUE;
 109                     }
 110                 }
 111             }
 112         }
 113     }
 114
 115 end:
 116     if (hKey)
 117         NtClose(hKey);
 118
 119     if (kvpInfo)
 120         HeapFree(GetProcessHeap(), 0, kvpInfo);
 121
 122     return bRet;
 123 }
 124
 125
 126 VOID
 127 LoadAppInitDlls()
 128 {
 129     szAppInit[0] = UNICODE_NULL;
 130
 131     if (GetDllList())
 132     {
 133         WCHAR buffer[KEY_LENGTH];
 134         LPWSTR ptr;
 135                 size_t i;
 136
 137         RtlCopyMemory(buffer, szAppInit, KEY_LENGTH);
 138
 139                 for (i = 0; i < KEY_LENGTH; ++ i)
 140                 {
 141                         if(buffer[i] == L' ' || buffer[i] == L',')
 142                                 buffer[i] = 0;
 143                 }
 144
 145                 for (i = 0; i < KEY_LENGTH; )
 146                 {
 147                         if(buffer[i] == 0)
 148                                 ++ i;
 149                         else
 150                         {
 151                                 ptr = buffer + i;
 152                                 i += wcslen(ptr);
 153                                 LoadLibraryW(ptr);
 154                         }
 155                 }
 156     }
 157 }
 158
 159 VOID
 160 UnloadAppInitDlls()
 161 {
 162     if (szAppInit[0] != UNICODE_NULL)
 163     {
 164         WCHAR buffer[KEY_LENGTH];
 165         HMODULE hModule;
 166         LPWSTR ptr;
 167                 size_t i;
 168
 169         RtlCopyMemory(buffer, szAppInit, KEY_LENGTH);
 170
 171                 for (i = 0; i < KEY_LENGTH; ++ i)
 172                 {
 173                         if(buffer[i] == L' ' || buffer[i] == L',')
 174                                 buffer[i] = 0;
 175                 }
 176
 177                 for (i = 0; i < KEY_LENGTH; )
 178                 {
 179                         if(buffer[i] == 0)
 180                                 ++ i;
 181                         else
 182                         {
 183                                 ptr = buffer + i;
 184                                 i += wcslen(ptr);
 185                                 hModule = GetModuleHandleW(ptr);
 186                                 FreeLibrary(hModule);
 187                         }
 188                 }
 189     }
 190 }
 191
 192 BOOL
 193 InitThread(VOID)
 194 {
 195    PUSER32_THREAD_DATA ThreadData;
 196
 197    ThreadData = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 198                           sizeof(USER32_THREAD_DATA));
 199    if (ThreadData == NULL)
 200       return FALSE;
 201    if (!TlsSetValue(User32TlsIndex, ThreadData))
 202       return FALSE;
 203    return TRUE;
 204 }
 205
 206 VOID
 207 CleanupThread(VOID)
 208 {
 209    PUSER32_THREAD_DATA ThreadData;
 210
 211    ThreadData = (PUSER32_THREAD_DATA)TlsGetValue(User32TlsIndex);
 212    HeapFree(GetProcessHeap(), HEAP_ZERO_MEMORY, ThreadData);
 213    TlsSetValue(User32TlsIndex, 0);
 214 }
 215
 216 BOOL
 217 Init(VOID)
 218 {
 219    USERCONNECT UserCon;
 220    PVOID *KernelCallbackTable;
 221
 222    /* Set up the kernel callbacks. */
 223    KernelCallbackTable = NtCurrentPeb()->KernelCallbackTable;
 224    KernelCallbackTable[USER32_CALLBACK_WINDOWPROC] =
 225       (PVOID)User32CallWindowProcFromKernel;
 226    KernelCallbackTable[USER32_CALLBACK_SENDASYNCPROC] =
 227       (PVOID)User32CallSendAsyncProcForKernel;
 228    KernelCallbackTable[USER32_CALLBACK_LOADSYSMENUTEMPLATE] =
 229       (PVOID)User32LoadSysMenuTemplateForKernel;
 230    KernelCallbackTable[USER32_CALLBACK_LOADDEFAULTCURSORS] =
 231       (PVOID)User32SetupDefaultCursors;
 232    KernelCallbackTable[USER32_CALLBACK_HOOKPROC] =
 233       (PVOID)User32CallHookProcFromKernel;
 234    KernelCallbackTable[USER32_CALLBACK_EVENTPROC] =
 235       (PVOID)User32CallEventProcFromKernel;
 236    KernelCallbackTable[USER32_CALLBACK_LOADMENU] =
 237       (PVOID)User32CallLoadMenuFromKernel;
 238    KernelCallbackTable[USER32_CALLBACK_CLIENTTHREADSTARTUP] =
 239       (PVOID)User32CallClientThreadSetupFromKernel;
 240
 241    NtUserProcessConnect( NtCurrentProcess(),
 242                          &UserCon,
 243                          sizeof(USERCONNECT));
 244
 245    g_ppi = GetWin32ClientInfo()->ppi; // Snapshot PI, used as pointer only!
 246    g_ulSharedDelta = UserCon.siClient.ulSharedDelta;
 247    gpsi = SharedPtrToUser(UserCon.siClient.psi);
 248    gHandleTable = SharedPtrToUser(UserCon.siClient.aheList);
 249    gHandleEntries = SharedPtrToUser(gHandleTable->handles);
 250
 251    RtlInitializeCriticalSection(&gcsUserApiHook);
 252    gfServerProcess = TRUE; // FIXME HAX! Used in CsrClientConnectToServer(,,,,&gfServerProcess);
 253
 254    //ERR("1 SI 0x%x : HT 0x%x : D 0x%x\n", UserCon.siClient.psi, UserCon.siClient.aheList,  g_ulSharedDelta);
 255
 256    /* Allocate an index for user32 thread local data. */
 257    User32TlsIndex = TlsAlloc();
 258    if (User32TlsIndex != TLS_OUT_OF_INDEXES)
 259    {
 260       if (MessageInit())
 261       {
 262          if (MenuInit())
 263          {
 264             InitializeCriticalSection(&U32AccelCacheLock);
 265             GdiDllInitialize(NULL, DLL_PROCESS_ATTACH, NULL);
 266             InitStockObjects();
 267             LoadAppInitDlls();
 268
 269             return TRUE;
 270          }
 271          MessageCleanup();
 272       }
 273       TlsFree(User32TlsIndex);
 274    }
 275
 276    return FALSE;
 277 }
 278
 279 VOID
 280 Cleanup(VOID)
 281 {
 282    DeleteCriticalSection(&U32AccelCacheLock);
 283    MenuCleanup();
 284    MessageCleanup();
 285    DeleteFrameBrushes();
 286    UnloadAppInitDlls();
 287    GdiDllInitialize(NULL, DLL_PROCESS_DETACH, NULL);
 288    TlsFree(User32TlsIndex);
 289 }
 290
 291 INT WINAPI
 292 DllMain(
 293    IN PVOID hInstanceDll,
 294    IN ULONG dwReason,
 295    IN PVOID reserved)
 296 {
 297    switch (dwReason)
 298    {
 299       case DLL_PROCESS_ATTACH:
 300          User32Instance = hInstanceDll;
 301          if (!RegisterClientPFN())
 302          {
 303              return FALSE;
 304          }
 305
 306          if (!Init())
 307             return FALSE;
 308          if (!InitThread())
 309          {
 310             Cleanup();
 311             return FALSE;
 312          }
 313
 314          /* Initialize message spying */
 315         if (!SPY_Init()) return FALSE;
 316
 317          break;
 318
 319       case DLL_THREAD_ATTACH:
 320          if (!InitThread())
 321             return FALSE;
 322          break;
 323
 324       case DLL_THREAD_DETACH:
 325          CleanupThread();
 326          break;
 327
 328       case DLL_PROCESS_DETACH:
 329          if (hImmInstance) FreeLibrary(hImmInstance);
 330          CleanupThread();
 331          Cleanup();
 332          break;
 333    }
 334
 335    return TRUE;
 336 }
 337
 338
 339 VOID
 340 FASTCALL
 341 GetConnected(VOID)
 342 {
 343   USERCONNECT UserCon;
 344 //  ERR("GetConnected\n");
 345
 346   if ((PTHREADINFO)NtCurrentTeb()->Win32ThreadInfo == NULL)
 347      NtUserGetThreadState(THREADSTATE_GETTHREADINFO);
 348
 349   if (gpsi && g_ppi) return;
 350 // FIXME HAX: Due to the "Dll Initialization Bug" we have to call this too.
 351   GdiDllInitialize(NULL, DLL_PROCESS_ATTACH, NULL);
 352
 353   NtUserProcessConnect( NtCurrentProcess(),
 354                          &UserCon,
 355                          sizeof(USERCONNECT));
 356
 357   g_ppi = GetWin32ClientInfo()->ppi;
 358   g_ulSharedDelta = UserCon.siClient.ulSharedDelta;
 359   gpsi = SharedPtrToUser(UserCon.siClient.psi);
 360   gHandleTable = SharedPtrToUser(UserCon.siClient.aheList);
 361   gHandleEntries = SharedPtrToUser(gHandleTable->handles);
 362
 363 }
 364
 365 NTSTATUS
 366 WINAPI
 367 User32CallClientThreadSetupFromKernel(PVOID Arguments, ULONG ArgumentLength)
 368 {
 369   ERR("GetConnected\n");
 370   return ZwCallbackReturn(NULL, 0, STATUS_SUCCESS);
 371 }
 372