diff options
Diffstat (limited to 'server/mpm/winnt/Win9xConHook.c')
| -rw-r--r-- | server/mpm/winnt/Win9xConHook.c | 739 |
1 files changed, 0 insertions, 739 deletions
diff --git a/server/mpm/winnt/Win9xConHook.c b/server/mpm/winnt/Win9xConHook.c deleted file mode 100644 index a285329b43..0000000000 --- a/server/mpm/winnt/Win9xConHook.c +++ /dev/null @@ -1,739 +0,0 @@ -/* ==================================================================== - * The Apache Software License, Version 1.1 - * - * Copyright (c) 2000 The Apache Software Foundation. All rights - * reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * 3. The end-user documentation included with the redistribution, - * if any, must include the following acknowledgment: - * "This product includes software developed by the - * Apache Software Foundation (http://www.apache.org/)." - * Alternately, this acknowledgment may appear in the software itself, - * if and wherever such third-party acknowledgments normally appear. - * - * 4. The names "Apache" and "Apache Software Foundation" must - * not be used to endorse or promote products derived from this - * software without prior written permission. For written - * permission, please contact apache@apache.org. - * - * 5. Products derived from this software may not be called "Apache", - * nor may "Apache" appear in their name, without prior written - * permission of the Apache Software Foundation. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR - * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * ==================================================================== - * - * This software consists of voluntary contributions made by many - * individuals on behalf of the Apache Software Foundation. For more - * information on the Apache Software Foundation, please see - * <http://www.apache.org/>. - * - * Portions of this software are based upon public domain software - * originally written at the National Center for Supercomputing Applications, - * University of Illinois, Urbana-Champaign. - */ - -#ifdef WIN32 - -/* - * Win9xConHook.dll - a hook proc to clean up Win95/98 console behavior. - * - * It is well(?) documented by Microsoft that the Win9x HandlerRoutine - * hooked by the SetConsoleCtrlHandler never receives the CTRL_CLOSE_EVENT, - * CTRL_LOGOFF_EVENT or CTRL_SHUTDOWN_EVENT signals. - * - * It is possible to have a second window to monitor the WM_ENDSESSION - * message, but the close button still fails.. - * - * There is a 16bit polling method for the close window option, but this - * is CPU intensive and requires thunking. - * - * Attempts to subclass the 'tty' console fail, since that message thread - * is actually owned by the 16 bit winoldap.mod process, although the - * window reports it is owned by the process/thread of the console app. - * - * Win9xConHook is thunks the WM_CLOSE and WM_ENDSESSION messages, - * first through a window hook procedure in the winoldap context, into - * a subclass WndProc, and on to a second hidden monitor window in the - * console application's context that dispatches them to the console app's - * registered HandlerRoutine. - */ - -/* This debugging define turns on output to COM1, although you better init - * the port first (even using hyperterm). It's the only way to catch the - * goings on within system logoff/shutdown. - * #define DBG 1 - */ - -#include <windows.h> - -/* Variables used within any process context: - * hookwndmsg is a shared message to send Win9xConHook signals - * origwndprop is a wndprop atom to store the orig wndproc of the tty - * hookwndprop is a wndprop atom to store the hwnd of the hidden child - * is_service reminds us to unmark this process on the way out - */ -static UINT hookwndmsg = 0; -static LPCTSTR origwndprop; -static LPCTSTR hookwndprop; -static BOOL is_service = 0; -//static HMODULE hmodThis = NULL; - -/* Variables used within the tty processes' context: - * is_tty flags this process; -1 == unknown, 1 == if tty, 0 == if not - * hw_tty is the handle of the top level tty in this process context - * is_subclassed is toggled to assure DllMain removes the subclass on unload - * hmodLock is there to try and prevent this dll from being unloaded if the - * hook is removed while we are subclassed - */ -static int is_tty = -1; -static HWND hwtty = NULL; -static BOOL is_subclassed = 0; - -// This simply causes a gpfault the moment it tries to FreeLibrary within -// the subclass procedure ... not good. -//static HMODULE hmodLock = NULL; - -/* Variables used within the service or console app's context: - * hmodHook is the instance handle of this module for registering the hooks - * hhkGetMessage is the hook handle for catching Posted messages - * hhkGetMessage is the hook handle for catching Sent messages - * monitor_hwnd is the invisible window that handles our tty messages - * the tty_info strucure is used to pass args into the hidden window's thread - */ -static HMODULE hmodHook = NULL; -static HHOOK hhkGetMessage; -//static HHOOK hhkCallWndProc; -static HWND monitor_hwnd = NULL; - -typedef struct { - PHANDLER_ROUTINE phandler; - HINSTANCE instance; - HWND parent; - INT type; - LPCSTR name; -} tty_info; - -/* These are the GetWindowLong offsets for the hidden window's internal info - * gwltty_phandler is the address of the app's HandlerRoutine - * gwltty_ttywnd is the tty this hidden window will handle messages from - */ -#define gwltty_phandler 0 -#define gwltty_ttywnd 4 - -/* Forward declaration prototypes for internal functions - */ -static BOOL CALLBACK EnumttyWindow(HWND wnd, LPARAM retwnd); -static LRESULT WINAPI RegisterWindows9xService(BOOL set_service); -static LRESULT CALLBACK ttyConsoleCtrlWndProc(HWND hwnd, UINT msg, - WPARAM wParam, LPARAM lParam); -static DWORD WINAPI ttyConsoleCtrlThread(LPVOID tty); -static LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, - WPARAM wParam, LPARAM lParam); -static int HookProc(int hc, HWND *hwnd, UINT *msg, - WPARAM *wParam, LPARAM *lParam); -#ifdef DBG -static VOID DbgPrintf(LPTSTR fmt, ...); -#endif - - -/* DllMain is invoked by every process in the entire system that is hooked - * by our window hooks, notably the tty processes' context, and by the user - * who wants tty messages (the app). Keep it light and simple. - */ -BOOL __declspec(dllexport) APIENTRY DllMain(HINSTANCE hModule, ULONG ulReason, - LPVOID pctx) -{ - if (ulReason == DLL_PROCESS_ATTACH) - { - //hmodThis = hModule; - if (!hookwndmsg) { - origwndprop = MAKEINTATOM(GlobalAddAtom("Win9xConHookOrigProc")); - hookwndprop = MAKEINTATOM(GlobalAddAtom("Win9xConHookThunkWnd")); - hookwndmsg = RegisterWindowMessage("Win9xConHookMsg"); - } -#ifdef DBG -// DbgPrintf("H ProcessAttach:%8.8x\r\n", -// GetCurrentProcessId()); -#endif - } - else if ( ulReason == DLL_PROCESS_DETACH ) - { -#ifdef DBG -// DbgPrintf("H ProcessDetach:%8.8x\r\n", GetCurrentProcessId()); -#endif - if (monitor_hwnd) - SendMessage(monitor_hwnd, WM_DESTROY, 0, 0); - if (is_subclassed) - SendMessage(hwtty, hookwndmsg, 0, (LPARAM)hwtty); - if (hmodHook) - { - if (hhkGetMessage) { - UnhookWindowsHookEx(hhkGetMessage); - hhkGetMessage = NULL; - } - //if (hhkCallWndProc) { - // UnhookWindowsHookEx(hhkCallWndProc); - // hhkCallWndProc = NULL; - //} - FreeLibrary(hmodHook); - hmodHook = NULL; - } - if (is_service) - RegisterWindows9xService(FALSE); - if (hookwndmsg) { - GlobalDeleteAtom((ATOM)origwndprop); - GlobalDeleteAtom((ATOM)hookwndprop); - hookwndmsg = 0; - } - } - return TRUE; -} - - -/* This group of functions are provided for the service/console app - * to register itself a HandlerRoutine to accept tty or service messages - */ - - -/* Exported function that creates a Win9x 'service' via a hidden window, - * that notifies the process via the HandlerRoutine messages. - */ -BOOL __declspec(dllexport) WINAPI Windows9xServiceCtrlHandler( - PHANDLER_ROUTINE phandler, - LPCSTR name) -{ - /* If we have not yet done so */ - FreeConsole(); - - if (name) - { - DWORD tid; - HANDLE hThread; - /* NOTE: this is static so the module can continue to - * access these args while we go on to other things - */ - static tty_info tty; - tty.instance = GetModuleHandle(NULL); - tty.phandler = phandler; - tty.parent = NULL; - tty.name = name; - tty.type = 2; - RegisterWindows9xService(TRUE); - hThread = CreateThread(NULL, 0, ttyConsoleCtrlThread, - (LPVOID)&tty, 0, &tid); - if (hThread) - { - CloseHandle(hThread); - return TRUE; - } - } - else /* remove */ - { - if (monitor_hwnd) - SendMessage(monitor_hwnd, WM_DESTROY, 0, 0); - RegisterWindows9xService(FALSE); - return TRUE; - } - return FALSE; -} - - -/* Exported function that registers a HandlerRoutine to accept missing - * Win9x CTRL_EVENTs from the tty window, as NT does without a hassle. - * If add is 1 or 2, register the handler, if 2 also mark it as a service. - * If add is 0 deregister the handler, and unmark if a service - */ -BOOL __declspec(dllexport) WINAPI FixConsoleCtrlHandler( - PHANDLER_ROUTINE phandler, - INT add) -{ - HWND parent; - - if (add) - { - HANDLE hThread; - DWORD tid; - /* NOTE: this is static so the module can continue to - * access these args while we go on to other things - */ - static tty_info tty; - EnumWindows(EnumttyWindow, (LPARAM)&parent); - if (!parent) { -#ifdef DBG - DbgPrintf("A EnumttyWindow failed (%d)\r\n", GetLastError()); -#endif - return FALSE; - } - tty.instance = GetModuleHandle(NULL); - tty.phandler = phandler; - tty.parent = parent; - tty.type = add; - if (add == 2) { - tty.name = "ttyService"; - RegisterWindows9xService(TRUE); - } - else - tty.name = "ttyMonitor"; - hThread = CreateThread(NULL, 0, ttyConsoleCtrlThread, - (LPVOID)&tty, 0, &tid); - if (!hThread) - return FALSE; - CloseHandle(hThread); - hmodHook = LoadLibrary("Win9xConHook.dll"); - if (hmodHook) - { - hhkGetMessage = SetWindowsHookEx(WH_GETMESSAGE, - (HOOKPROC)GetProcAddress(hmodHook, "GetMsgProc"), hmodHook, 0); - //hhkCallWndProc = SetWindowsHookEx(WH_CALLWNDPROC, - // (HOOKPROC)GetProcAddress(hmodHook, "CallWndProc"), hmodHook, 0); - } - return TRUE; - } - else /* remove */ - { - if (monitor_hwnd) { - SendMessage(monitor_hwnd, WM_DESTROY, 0, 0); - } - if (hmodHook) - { - if (hhkGetMessage) { - UnhookWindowsHookEx(hhkGetMessage); - hhkGetMessage = NULL; - } - //if (hhkCallWndProc) { - // UnhookWindowsHookEx(hhkCallWndProc); - // hhkCallWndProc = NULL; - //} - FreeLibrary(hmodHook); - hmodHook = NULL; - } - if (is_service) - RegisterWindows9xService(FALSE); - return TRUE; - } - return FALSE; -} - - -/* The following internal helpers are only used within the app's context - */ - -/* ttyConsoleCreateThread is the process that runs within the user app's - * context. It creates and pumps the messages of a hidden monitor window, - * watching for messages from the system, or the associated subclassed tty - * window. Things can happen in our context that can't be done from the - * tty's context, and visa versa, so the subclass procedure and this hidden - * window work together to make it all happen. - */ -static DWORD WINAPI ttyConsoleCtrlThread(LPVOID tty) -{ - WNDCLASS wc; - MSG msg; - wc.style = CS_GLOBALCLASS; - wc.lpfnWndProc = ttyConsoleCtrlWndProc; - wc.cbClsExtra = 0; - wc.cbWndExtra = 8; - wc.hInstance = NULL; - wc.hIcon = NULL; - wc.hCursor = NULL; - wc.hbrBackground = NULL; - wc.lpszMenuName = NULL; - if (((tty_info*)tty)->parent) - wc.lpszClassName = "ttyConHookChild"; - else - wc.lpszClassName = "ApacheWin95ServiceMonitor"; - - if (!RegisterClass(&wc)) { -#ifdef DBG - DbgPrintf("A proc %8.8x Error creating class %s (%d)\r\n", - GetCurrentProcessId(), wc.lpszClassName, GetLastError()); -#endif - return 0; - } - - /* Create an invisible window */ - monitor_hwnd = CreateWindow(wc.lpszClassName, ((tty_info*)tty)->name, - WS_OVERLAPPED & ~WS_VISIBLE, - CW_USEDEFAULT, CW_USEDEFAULT, - CW_USEDEFAULT, CW_USEDEFAULT, - NULL, NULL, - ((tty_info*)tty)->instance, tty); - - if (!monitor_hwnd) { -#ifdef DBG - DbgPrintf("A proc %8.8x Error creating window %s %s (%d)\r\n", - GetCurrentProcessId(), wc.lpszClassName, - ((tty_info*)tty)->name, GetLastError()); -#endif - return 0; - } - - while (GetMessage(&msg, NULL, 0, 0)) - { - TranslateMessage(&msg); - DispatchMessage(&msg); - } - - /* Tag again as deleted, just in case we missed WM_DESTROY */ - monitor_hwnd = NULL; - return 0; -} - - -/* This is the WndProc procedure for our invisible window. - * When our subclasssed tty window receives the WM_CLOSE, WM_ENDSESSION, - * or WM_QUERYENDSESSION messages, the message is dispatched to our hidden - * window (this message process), and we call the installed HandlerRoutine - * that was registered by the app. - */ -static LRESULT CALLBACK ttyConsoleCtrlWndProc(HWND hwnd, UINT msg, - WPARAM wParam, LPARAM lParam) -{ - if (msg == WM_CREATE) - { - tty_info *tty = (tty_info*)(((LPCREATESTRUCT)lParam)->lpCreateParams); - SetWindowLong(hwnd, gwltty_phandler, (LONG)tty->phandler); - SetWindowLong(hwnd, gwltty_ttywnd, (LONG)tty->parent); -#ifdef DBG - DbgPrintf("A proc %8.8x created %8.8x %s for tty wnd %8.8x\r\n", - GetCurrentProcessId(), hwnd, - tty->name, tty->parent); -#endif - if (tty->parent) { - SetProp(tty->parent, hookwndprop, hwnd); - PostMessage(tty->parent, hookwndmsg, - tty->type, (LPARAM)tty->parent); - } - return 0; - } - else if (msg == WM_DESTROY) - { - HWND parent = (HWND)GetWindowLong(hwnd, gwltty_ttywnd); -#ifdef DBG - DbgPrintf("A proc %8.8x destroyed %8.8x ttyConHookChild\r\n", - GetCurrentProcessId(), hwnd); -#endif - if (parent) { - RemoveProp(parent, hookwndprop); - SendMessage(parent, hookwndmsg, 0, (LPARAM)parent); - } - monitor_hwnd = NULL; - } - else if (msg == WM_CLOSE) - { - PHANDLER_ROUTINE phandler = - (PHANDLER_ROUTINE)GetWindowLong(hwnd, gwltty_phandler); - LRESULT rv = phandler(CTRL_CLOSE_EVENT); -#ifdef DBG - DbgPrintf("A proc %8.8x invoked CTRL_CLOSE_EVENT " - "returning %d\r\n", - GetCurrentProcessId(), rv); -#endif - if (rv) - return !rv; - } - else if ((msg == WM_QUERYENDSESSION) || (msg == WM_ENDSESSION)) - { - if (lParam & ENDSESSION_LOGOFF) - { - PHANDLER_ROUTINE phandler = - (PHANDLER_ROUTINE)GetWindowLong(hwnd, gwltty_phandler); - LRESULT rv = phandler(CTRL_LOGOFF_EVENT); -#ifdef DBG - DbgPrintf("A proc %8.8x invoked CTRL_LOGOFF_EVENT " - "returning %d\r\n", - GetCurrentProcessId(), rv); -#endif - if (rv) - return ((msg == WM_QUERYENDSESSION) ? rv : !rv); - } - else - { - PHANDLER_ROUTINE phandler = - (PHANDLER_ROUTINE)GetWindowLong(hwnd, gwltty_phandler); - LRESULT rv = phandler(CTRL_SHUTDOWN_EVENT); -#ifdef DBG - DbgPrintf("A proc %8.8x invoked CTRL_SHUTDOWN_EVENT " - "returning %d\r\n", GetCurrentProcessId(), rv); -#endif - if (rv) - return ((msg == WM_QUERYENDSESSION) ? rv : !rv); - } - } - return (DefWindowProc(hwnd, msg, wParam, lParam)); -} - - -/* The following internal helpers are invoked by the hooked tty and our app - */ - - -/* Register or deregister the current process as a Windows9x style service. - * Experience shows this call is ignored across processes, so the second - * arg to RegisterServiceProcess (process group id) is effectively useless. - */ -static LRESULT WINAPI RegisterWindows9xService(BOOL set_service) -{ - static HINSTANCE hkernel; - static DWORD (WINAPI *register_service_process)(DWORD, DWORD) = NULL; - BOOL rv; - - if (set_service == is_service) - return 1; - -#ifdef DBG - DbgPrintf("R %s proc %8.8x as a service\r\n", - set_service ? "installing" : "removing", - GetCurrentProcessId()); -#endif - - if (!register_service_process) - { - /* Obtain a handle to the kernel library */ - hkernel = LoadLibrary("KERNEL32.DLL"); - if (!hkernel) - return 0; - - /* Find the RegisterServiceProcess function */ - register_service_process = (DWORD (WINAPI *)(DWORD, DWORD)) - GetProcAddress(hkernel, "RegisterServiceProcess"); - if (register_service_process == NULL) { - FreeLibrary(hkernel); - return 0; - } - } - - /* Register this process as a service */ - rv = register_service_process(0, set_service != FALSE); - if (rv) - is_service = set_service; - - if (!is_service) - { - /* Unload the kernel library */ - FreeLibrary(hkernel); - register_service_process = NULL; - } - return rv; -} - - -/* - * This function only works when this process is the active process - * (e.g. once it is running a child process, it can no longer determine - * which console window is its own.) - */ -static BOOL CALLBACK EnumttyWindow(HWND wnd, LPARAM retwnd) -{ - char tmp[8]; - if (GetClassName(wnd, tmp, sizeof(tmp)) && !strcmp(tmp, "tty")) - { - DWORD wndproc, thisproc = GetCurrentProcessId(); - GetWindowThreadProcessId(wnd, &wndproc); - if (wndproc == thisproc) { - *((HWND*)retwnd) = wnd; - return FALSE; - } - } - return TRUE; -} - - -/* The remaining code all executes --in the tty's own process context-- - * - * That means special attention must be paid to what it's doing... - */ - -/* Subclass message process for the tty window - * - * This code -handles- WM_CLOSE, WM_ENDSESSION and WM_QUERYENDSESSION - * by dispatching them to the window identified by the hookwndprop - * property atom set against our window. Messages are then dispatched - * to origwndprop property atom we set against the window when we - * injected this subclass. This trick did not work with simply a hook. - */ -static LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, - WPARAM wParam, LPARAM lParam) -{ - WNDPROC origproc = (WNDPROC) GetProp(hwnd, origwndprop); - if (!origproc) - return 0; - - if (msg == WM_NCDESTROY - || (msg == hookwndmsg && !LOWORD(wParam) && (HWND)lParam == hwnd)) - { - if (is_subclassed) { -#ifdef DBG - DbgPrintf("W proc %08x hwnd:%08x Subclass removed\r\n", - GetCurrentProcessId(), hwnd); -#endif - if (is_service) - RegisterWindows9xService(FALSE); - SetWindowLong(hwnd, GWL_WNDPROC, (LONG)origproc); - RemoveProp(hwnd, origwndprop); - RemoveProp(hwnd, hookwndprop); - is_subclassed = FALSE; - //if (hmodLock) - // FreeLibrary(hmodLock); - //hmodLock = NULL; - } - } - else if (msg == WM_CLOSE || msg == WM_ENDSESSION - || msg == WM_QUERYENDSESSION) - { - HWND child = (HWND)GetProp(hwnd, hookwndprop); - if (child) { -#ifdef DBG - DbgPrintf("W proc %08x hwnd:%08x forwarded msg:%d\r\n", - GetCurrentProcessId(), hwnd, msg); -#endif - return SendMessage(child, msg, wParam, lParam); - } - } - return CallWindowProc(origproc, hwnd, msg, wParam, lParam); -} - - -/* HookProc, once installed, is responsible for subclassing the system - * tty windows. It generally does nothing special itself, since - * research indicates that it cannot deal well with the messages we are - * interested in, that is, WM_CLOSE, WM_QUERYSHUTDOWN and WM_SHUTDOWN - * of the tty process. - * - * Respond and subclass only when a WM_NULL is received by the window. - */ -int HookProc(int hc, HWND *hwnd, UINT *msg, WPARAM *wParam, LPARAM *lParam) -{ - if (is_tty == -1 && *hwnd) - { - char ttybuf[8]; - HWND htty; - hwtty = *hwnd; - while (htty = GetParent(hwtty)) - hwtty = htty; - is_tty = (GetClassName(hwtty, ttybuf, sizeof(ttybuf)) - && !strcmp(ttybuf, "tty")); -#ifdef DBG - if (is_tty) - DbgPrintf("H proc %08x tracking hwnd %08x\r\n", - GetCurrentProcessId(), hwtty); -#endif - } - - if (*msg == hookwndmsg && *wParam && *lParam == (LPARAM)hwtty && is_tty) - { - WNDPROC origproc = (WNDPROC)GetWindowLong(hwtty, GWL_WNDPROC); - //char myname[MAX_PATH]; - //if (GetModuleFileName(hmodThis, myname, sizeof(myname))) - // hmodLock = LoadLibrary(myname); - SetProp(hwtty, origwndprop, origproc); - SetWindowLong(hwtty, GWL_WNDPROC, (LONG)WndProc); - is_subclassed = TRUE; -#ifdef DBG - DbgPrintf("H proc %08x hwnd:%08x Subclassed\r\n", - GetCurrentProcessId(), hwtty); -#endif - if (LOWORD(*wParam) == 2) - RegisterWindows9xService(TRUE); - } - - return -1; -} - - -/* - * PostMessage Hook: - */ -LRESULT __declspec(dllexport) CALLBACK GetMsgProc(INT hc, WPARAM wParam, - LPARAM lParam) -{ - PMSG pmsg; - - pmsg = (PMSG)lParam; - - if (pmsg) { - int rv = HookProc(hc, &pmsg->hwnd, &pmsg->message, - &pmsg->wParam, &pmsg->lParam); - if (rv != -1) - return rv; - } - /* - * CallNextHookEx apparently ignores the hhook argument, so pass NULL - */ - return CallNextHookEx(NULL, hc, wParam, lParam); -} - - -/* - * SendMessage Hook: - */ -LRESULT __declspec(dllexport) CALLBACK CallWndProc(INT hc, WPARAM wParam, - LPARAM lParam) -{ - PCWPSTRUCT pcwps = (PCWPSTRUCT)lParam; - - if (pcwps) { - int rv = HookProc(hc, &pcwps->hwnd, &pcwps->message, - &pcwps->wParam, &pcwps->lParam); - if (rv != -1) - return rv; - } - /* - * CallNextHookEx apparently ignores the hhook argument, so pass NULL - */ - return CallNextHookEx(NULL, hc, wParam, lParam); -} - - -#ifdef DBG -VOID DbgPrintf( - LPTSTR fmt, - ... - ) -{ - static HANDLE mutex; - va_list marker; - TCHAR szBuf[256]; - DWORD t; - HANDLE gDbgOut; - - va_start(marker, fmt); - wvsprintf(szBuf, fmt, marker); - va_end(marker); - - if (!mutex) - mutex = CreateMutex(NULL, FALSE, "Win9xConHookDbgOut"); - WaitForSingleObject(mutex, INFINITE); - gDbgOut = CreateFile("COM1", GENERIC_READ | GENERIC_WRITE, 0, - NULL, OPEN_EXISTING, FILE_FLAG_WRITE_THROUGH, NULL); - WriteFile(gDbgOut, szBuf, strlen(szBuf), &t, NULL); - CloseHandle(gDbgOut); - ReleaseMutex(mutex); -} -#endif - -#endif /* WIN32 */ |