dll/win32/kernel32/misc/dllmain.c

   1 /* $Id$
   2  *
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS system libraries
   5  * FILE:            lib/kernel32/misc/dllmain.c
   6  * PURPOSE:         Initialization
   7  * PROGRAMMER:      Ariadne ( ariadne@xs4all.nl)
   8  * UPDATE HISTORY:
   9  *                  Created 01/11/98
  10  */
  11
  12 /* INCLUDES ******************************************************************/
  13
  14 #include <k32.h>
  15
  16 #define NDEBUG
  17 #include <debug.h>
  18
  19 /* GLOBALS *******************************************************************/
  20
  21 extern UNICODE_STRING SystemDirectory;
  22 extern UNICODE_STRING WindowsDirectory;
  23
  24 HANDLE hProcessHeap = NULL;
  25 HMODULE hCurrentModule = NULL;
  26 HANDLE hBaseDir = NULL;
  27 PPEB Peb;
  28 ULONG SessionId;
  29 BOOL ConsoleInitialized = FALSE;
  30
  31 static BOOL DllInitialized = FALSE;
  32
  33 BOOL WINAPI
  34 DllMain(HANDLE hInst,
  35         DWORD dwReason,
  36         LPVOID lpReserved);
  37
  38 /* Critical section for various kernel32 data structures */
  39 RTL_CRITICAL_SECTION DllLock;
  40 RTL_CRITICAL_SECTION ConsoleLock;
  41
  42 extern BOOL WINAPI DefaultConsoleCtrlHandler(DWORD Event);
  43 extern __declspec(noreturn) VOID CALLBACK ConsoleControlDispatcher(DWORD CodeAndFlag);
  44 extern PHANDLER_ROUTINE InitialHandler[1];
  45 extern PHANDLER_ROUTINE* CtrlHandlers;
  46 extern ULONG NrCtrlHandlers;
  47 extern ULONG NrAllocatedHandlers;
  48 extern BOOL FASTCALL NlsInit(VOID);
  49 extern VOID FASTCALL NlsUninit(VOID);
  50 BOOLEAN InWindows = FALSE;
  51
  52 HANDLE
  53 WINAPI
  54 DuplicateConsoleHandle(HANDLE hConsole,
  55                        DWORD dwDesiredAccess,
  56                        BOOL     bInheritHandle,
  57                        DWORD dwOptions);
  58
  59 #define WIN_OBJ_DIR L"\\Windows"
  60 #define SESSION_DIR L"\\Sessions"
  61
  62 SYSTEM_BASIC_INFORMATION BaseCachedSysInfo;
  63
  64 /* FUNCTIONS *****************************************************************/
  65
  66 NTSTATUS
  67 WINAPI
  68 OpenBaseDirectory(PHANDLE DirHandle)
  69 {
  70     OBJECT_ATTRIBUTES ObjectAttributes;
  71     UNICODE_STRING Name = RTL_CONSTANT_STRING(L"\\BaseNamedObjects");
  72     NTSTATUS Status;
  73
  74     InitializeObjectAttributes(&ObjectAttributes,
  75                                &Name,
  76                                OBJ_CASE_INSENSITIVE,
  77                                NULL,
  78                                NULL);
  79
  80     Status = NtOpenDirectoryObject(DirHandle,
  81                                    DIRECTORY_ALL_ACCESS &
  82                                    ~(DELETE | WRITE_DAC | WRITE_OWNER),
  83                                    &ObjectAttributes);
  84     if (!NT_SUCCESS(Status))
  85     {
  86         return Status;
  87     }
  88
  89     DPRINT("Opened BNO: %lx\n", *DirHandle);
  90     return Status;
  91 }
  92
  93 /*
  94  * @unimplemented
  95  */
  96 BOOL
  97 WINAPI
  98 BaseQueryModuleData(IN LPSTR ModuleName,
  99                     IN LPSTR Unknown,
 100                     IN PVOID Unknown2,
 101                     IN PVOID Unknown3,
 102                     IN PVOID Unknown4)
 103 {
 104     DPRINT1("BaseQueryModuleData called: %s %s %x %x %x\n",
 105             ModuleName,
 106             Unknown,
 107             Unknown2,
 108             Unknown3,
 109             Unknown4);
 110     return FALSE;
 111 }
 112
 113 /*
 114  * @unimplemented
 115  */
 116 NTSTATUS
 117 WINAPI
 118 BaseProcessInitPostImport(VOID)
 119 {
 120     /* FIXME: Initialize TS pointers */
 121     return STATUS_SUCCESS;
 122 }
 123
 124 BOOL
 125 WINAPI
 126 BasepInitConsole(VOID)
 127 {
 128     CSR_API_MESSAGE Request;
 129     ULONG CsrRequest;
 130     NTSTATUS Status;
 131     BOOLEAN NotConsole = FALSE;
 132     PRTL_USER_PROCESS_PARAMETERS Parameters = NtCurrentPeb()->ProcessParameters;
 133
 134     WCHAR lpTest[MAX_PATH];
 135     GetModuleFileNameW(NULL, lpTest, MAX_PATH);
 136     DPRINT("BasepInitConsole for : %S\n", lpTest);
 137     DPRINT("Our current console handles are: %lx, %lx, %lx %lx\n",
 138            Parameters->ConsoleHandle, Parameters->StandardInput,
 139            Parameters->StandardOutput, Parameters->StandardError);
 140
 141     /* We have nothing to do if this isn't a console app... */
 142     if (RtlImageNtHeader(GetModuleHandle(NULL))->OptionalHeader.Subsystem !=
 143         IMAGE_SUBSYSTEM_WINDOWS_CUI)
 144     {
 145         DPRINT("Image is not a console application\n");
 146         Parameters->ConsoleHandle = NULL;
 147         Request.Data.AllocConsoleRequest.ConsoleNeeded = FALSE;
 148     }
 149     else
 150     {
 151         /* Assume one is needed */
 152         Request.Data.AllocConsoleRequest.ConsoleNeeded = TRUE;
 153
 154         /* Handle the special flags given to us by BasepInitializeEnvironment */
 155         if (Parameters->ConsoleHandle == HANDLE_DETACHED_PROCESS)
 156         {
 157             /* No console to create */
 158             DPRINT("No console to create\n");
 159             Parameters->ConsoleHandle = NULL;
 160             Request.Data.AllocConsoleRequest.ConsoleNeeded = FALSE;
 161         }
 162         else if (Parameters->ConsoleHandle == HANDLE_CREATE_NEW_CONSOLE)
 163         {
 164             /* We'll get the real one soon */
 165             DPRINT("Creating new console\n");
 166             Parameters->ConsoleHandle = NULL;
 167         }
 168         else if (Parameters->ConsoleHandle == HANDLE_CREATE_NO_WINDOW)
 169         {
 170             /* We'll get the real one soon */
 171             DPRINT1("NOT SUPPORTED: HANDLE_CREATE_NO_WINDOW\n");
 172             Parameters->ConsoleHandle = NULL;
 173         }
 174         else
 175         {
 176             if (Parameters->ConsoleHandle == INVALID_HANDLE_VALUE)
 177             {
 178                 Parameters->ConsoleHandle = 0;
 179             }
 180             DPRINT("Using existing console: %x\n", Parameters->ConsoleHandle);
 181         }
 182     }
 183
 184     /* Initialize Console Ctrl Handler */
 185     ConsoleInitialized = TRUE;
 186     RtlInitializeCriticalSection(&ConsoleLock);
 187     NrAllocatedHandlers = 1;
 188     NrCtrlHandlers = 1;
 189     CtrlHandlers = InitialHandler;
 190     CtrlHandlers[0] = DefaultConsoleCtrlHandler;
 191
 192     /* Now use the proper console handle */
 193     Request.Data.AllocConsoleRequest.Console = Parameters->ConsoleHandle;
 194
 195     /*
 196      * Normally, we should be connecting to the Console CSR Server...
 197      * but we don't have one yet, so we will instead simply send a create
 198      * console message to the Base Server. When we finally have a Console
 199      * Server, this code should be changed to send connection data instead.
 200      */
 201     CsrRequest = MAKE_CSR_API(ALLOC_CONSOLE, CSR_CONSOLE);
 202     Request.Data.AllocConsoleRequest.CtrlDispatcher = ConsoleControlDispatcher;
 203     Status = CsrClientCallServer(&Request,
 204                                  NULL,
 205                                  CsrRequest,
 206                                  sizeof(CSR_API_MESSAGE));
 207     if(!NT_SUCCESS(Status) || !NT_SUCCESS(Status = Request.Status))
 208     {
 209         DPRINT1("CSR Failed to give us a console\n");
 210         /* We're lying here, so at least the process can load... */
 211         return TRUE;
 212     }
 213
 214     if (NotConsole) return TRUE;
 215
 216     /* We got the handles, let's set them */
 217     if ((Parameters->ConsoleHandle = Request.Data.AllocConsoleRequest.Console))
 218     {
 219         /* If we already had some, don't use the new ones */
 220         if (!Parameters->StandardInput)
 221         {
 222             Parameters->StandardInput = Request.Data.AllocConsoleRequest.InputHandle;
 223         }
 224         if (!Parameters->StandardOutput)
 225         {
 226             Parameters->StandardOutput = Request.Data.AllocConsoleRequest.OutputHandle;
 227         }
 228         if (!Parameters->StandardError)
 229         {
 230             Parameters->StandardError = Request.Data.AllocConsoleRequest.OutputHandle;
 231         }
 232     }
 233
 234     DPRINT("Console setup: %lx, %lx, %lx, %lx\n",
 235             Parameters->ConsoleHandle,
 236             Parameters->StandardInput,
 237             Parameters->StandardOutput,
 238             Parameters->StandardError);
 239     return TRUE;
 240 }
 241
 242
 243 BOOL
 244 WINAPI
 245 DllMain(HANDLE hDll,
 246         DWORD dwReason,
 247         LPVOID lpReserved)
 248 {
 249     NTSTATUS Status;
 250     BOOLEAN IsServer;
 251     ULONG Dummy;
 252     ULONG DummySize = sizeof(Dummy);
 253     WCHAR SessionDir[256];
 254
 255     DPRINT("DllMain(hInst %lx, dwReason %lu)\n",
 256            hDll, dwReason);
 257
 258     Basep8BitStringToUnicodeString = RtlAnsiStringToUnicodeString;
 259
 260     /* Cache the PEB and Session ID */
 261     Peb = NtCurrentPeb();
 262     SessionId = Peb->SessionId;
 263
 264     switch (dwReason)
 265     {
 266         case DLL_PROCESS_ATTACH:
 267
 268         /* Don't bother us for each thread */
 269         LdrDisableThreadCalloutsForDll((PVOID)hDll);
 270
 271         /* Setup the right Object Directory path */
 272         if (!SessionId)
 273         {
 274             /* Use the raw path */
 275             wcscpy(SessionDir, WIN_OBJ_DIR);
 276         }
 277         else
 278         {
 279             /* Use the session path */
 280             swprintf(SessionDir,
 281                      L"%ws\\%ld%ws",
 282                      SESSION_DIR,
 283                      SessionId,
 284                      WIN_OBJ_DIR);
 285         }
 286
 287         /* Connect to the base server */
 288         DPRINT("Connecting to CSR...\n");
 289         Status = CsrClientConnectToServer(SessionDir,
 290                                           InWindows ? 1 : 0,
 291                                           &Dummy,
 292                                           &DummySize,
 293                                           &IsServer);
 294         if (!NT_SUCCESS(Status))
 295         {
 296             DPRINT1("Failed to connect to CSR (Status %lx)\n", Status);
 297             ZwTerminateProcess(NtCurrentProcess(), Status);
 298             return FALSE;
 299         }
 300
 301         /* Check if we are running a CSR Server */
 302         if (!IsServer)
 303         {
 304             /* Set the termination port for the thread */
 305             DPRINT("Creating new thread for CSR\n");
 306             CsrNewThread();
 307         }
 308
 309         hProcessHeap = RtlGetProcessHeap();
 310         RtlInitializeHandleTable(0xFFFF,
 311                                  sizeof(BASE_HEAP_HANDLE_ENTRY),
 312                                  &BaseHeapHandleTable);
 313         hCurrentModule = hDll;
 314         DPRINT("Heap: %p\n", hProcessHeap);
 315
 316         /*
 317          * Initialize WindowsDirectory and SystemDirectory
 318          */
 319         DPRINT("NtSystemRoot: %S\n", SharedUserData->NtSystemRoot);
 320         RtlCreateUnicodeString (&WindowsDirectory, SharedUserData->NtSystemRoot);
 321         SystemDirectory.MaximumLength = WindowsDirectory.MaximumLength + 18;
 322         SystemDirectory.Length = WindowsDirectory.Length + 18;
 323         SystemDirectory.Buffer = RtlAllocateHeap(hProcessHeap,
 324                                                  0,
 325                                                  SystemDirectory.MaximumLength);
 326         if(SystemDirectory.Buffer == NULL)
 327         {
 328            return FALSE;
 329         }
 330         wcscpy(SystemDirectory.Buffer, WindowsDirectory.Buffer);
 331         wcscat(SystemDirectory.Buffer, L"\\System32");
 332
 333         /* Open object base directory */
 334         Status = OpenBaseDirectory(&hBaseDir);
 335         if (!NT_SUCCESS(Status))
 336         {
 337             DPRINT1("Failed to open object base directory (Status %lx)\n", Status);
 338             return FALSE;
 339         }
 340
 341         /* Initialize the DLL critical section */
 342         RtlInitializeCriticalSection(&DllLock);
 343
 344         /* Initialize the National Language Support routines */
 345         if (!NlsInit())
 346         {
 347             DPRINT1("NLS Init failed\n");
 348             return FALSE;
 349         }
 350
 351         /* Initialize Console Support */
 352         if (!BasepInitConsole())
 353         {
 354             DPRINT1("Failure to set up console\n");
 355             return FALSE;
 356         }
 357
 358         /* Cache static system information */
 359         Status = ZwQuerySystemInformation(SystemBasicInformation,
 360                                           &BaseCachedSysInfo,
 361                                           sizeof(BaseCachedSysInfo),
 362                                           NULL);
 363         if (!NT_SUCCESS(Status))
 364         {
 365             DPRINT1("Failure to get system information\n");
 366             return FALSE;
 367         }
 368
 369         /* Insert more dll attach stuff here! */
 370         DllInitialized = TRUE;
 371         DPRINT("Initialization complete\n");
 372         break;
 373
 374         case DLL_PROCESS_DETACH:
 375
 376             DPRINT("DLL_PROCESS_DETACH\n");
 377             if (DllInitialized == TRUE)
 378             {
 379                 /* Insert more dll detach stuff here! */
 380                 NlsUninit();
 381
 382                 /* Delete DLL critical section */
 383                 if (ConsoleInitialized == TRUE)
 384                 {
 385                     ConsoleInitialized = FALSE;
 386                     RtlDeleteCriticalSection (&ConsoleLock);
 387                 }
 388                 RtlDeleteCriticalSection (&DllLock);
 389
 390                 /* Close object base directory */
 391                 NtClose(hBaseDir);
 392
 393                 RtlFreeUnicodeString (&SystemDirectory);
 394                 RtlFreeUnicodeString (&WindowsDirectory);
 395             }
 396             break;
 397
 398         default:
 399             break;
 400     }
 401
 402     return TRUE;
 403 }
 404
 405 #undef InterlockedIncrement
 406 #undef InterlockedDecrement
 407 #undef InterlockedExchange
 408 #undef InterlockedExchangeAdd
 409 #undef InterlockedCompareExchange
 410
 411 LONG
 412 WINAPI
 413 InterlockedIncrement(IN OUT LONG volatile *lpAddend)
 414 {
 415     return _InterlockedIncrement(lpAddend);
 416 }
 417
 418 LONG
 419 WINAPI
 420 InterlockedDecrement(IN OUT LONG volatile *lpAddend)
 421 {
 422     return _InterlockedDecrement(lpAddend);
 423 }
 424
 425 LONG
 426 WINAPI
 427 InterlockedExchange(IN OUT LONG volatile *Target,
 428                     IN LONG Value)
 429 {
 430     return _InterlockedExchange(Target, Value);
 431 }
 432
 433 LONG
 434 WINAPI
 435 InterlockedExchangeAdd(IN OUT LONG volatile *Addend,
 436                        IN LONG Value)
 437 {
 438     return _InterlockedExchangeAdd(Addend, Value);
 439 }
 440
 441 LONG
 442 WINAPI
 443 InterlockedCompareExchange(IN OUT LONG volatile *Destination,
 444                            IN LONG Exchange,
 445                            IN LONG Comperand)
 446 {
 447     return _InterlockedCompareExchange(Destination, Exchange, Comperand);
 448 }
 449
 450 /* EOF */