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Sweden-Number/dlls/user/hook.c

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/*
* Windows hook functions
*
* Copyright 2002 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* NOTES:
* Status of the various hooks:
* WH_MSGFILTER OK
* WH_JOURNALRECORD Partially implemented
* WH_JOURNALPLAYBACK Partially implemented
* WH_KEYBOARD OK
* WH_GETMESSAGE OK (FIXME: A/W mapping?)
* WH_CALLWNDPROC OK (FIXME: A/W mapping?)
* WH_CBT
* HCBT_MOVESIZE OK
* HCBT_MINMAX OK
* HCBT_QS OK
* HCBT_CREATEWND OK
* HCBT_DESTROYWND OK
* HCBT_ACTIVATE OK
* HCBT_CLICKSKIPPED OK
* HCBT_KEYSKIPPED OK
* HCBT_SYSCOMMAND Not implemented
* HCBT_SETFOCUS OK
* WH_SYSMSGFILTER OK
* WH_MOUSE OK
* WH_HARDWARE Not supported in Win32
* WH_DEBUG Not implemented
* WH_SHELL
* HSHELL_WINDOWCREATED OK
* HSHELL_WINDOWDESTROYED OK
* HSHELL_ACTIVATESHELLWINDOW Not implemented
* HSHELL_WINDOWACTIVATED Not implemented
* HSHELL_GETMINRECT Not implemented
* HSHELL_REDRAW Not implemented
* HSHELL_TASKMAN Not implemented
* HSHELL_LANGUAGE Not implemented
* HSHELL_SYSMENU Not implemented
* HSHELL_ENDTASK Not implemented
* HSHELL_ACCESSIBILITYSTATE Not implemented
* HSHELL_APPCOMMAND Not implemented
* HSHELL_WINDOWREPLACED Not implemented
* HSHELL_WINDOWREPLACING Not implemented
* WH_FOREGROUNDIDLE Not implemented
* WH_CALLWNDPROCRET OK (FIXME: A/W mapping?)
* WH_KEYBOARD_LL Implemented but should use SendMessage instead
* WH_MOUSE_LL Implemented but should use SendMessage instead
*/
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "winerror.h"
#include "heap.h"
#include "message.h"
#include "win.h"
#include "wine/server.h"
#include "wine/unicode.h"
#include "wine/debug.h"
#include "winternl.h"
WINE_DEFAULT_DEBUG_CHANNEL(hook);
WINE_DECLARE_DEBUG_CHANNEL(relay);
static const char * const hook_names[WH_MAXHOOK - WH_MINHOOK + 1] =
{
"WH_MSGFILTER",
"WH_JOURNALRECORD",
"WH_JOURNALPLAYBACK",
"WH_KEYBOARD",
"WH_GETMESSAGE",
"WH_CALLWNDPROC",
"WH_CBT",
"WH_SYSMSGFILTER",
"WH_MOUSE",
"WH_HARDWARE",
"WH_DEBUG",
"WH_SHELL",
"WH_FOREGROUNDIDLE",
"WH_CALLWNDPROCRET",
"WH_KEYBOARD_LL",
"WH_MOUSE_LL"
};
/***********************************************************************
* get_ll_hook_timeout
*
*/
static UINT get_ll_hook_timeout(void)
{
/* FIXME: should retrieve LowLevelHooksTimeout in HKEY_CURRENT_USER\Control Panel\Desktop */
return 2000;
}
/***********************************************************************
* set_windows_hook
*
* Implementation of SetWindowsHookExA and SetWindowsHookExW.
*/
static HHOOK set_windows_hook( INT id, HOOKPROC proc, HINSTANCE inst, DWORD tid, BOOL unicode )
{
HHOOK handle = 0;
WCHAR module[MAX_PATH];
if (tid) /* thread-local hook */
{
if (id == WH_JOURNALRECORD ||
id == WH_JOURNALPLAYBACK ||
id == WH_KEYBOARD_LL ||
id == WH_MOUSE_LL ||
id == WH_SYSMSGFILTER)
{
/* these can only be global */
SetLastError( ERROR_INVALID_PARAMETER );
return 0;
}
inst = 0;
}
else /* system-global hook */
{
if (id == WH_KEYBOARD_LL || id == WH_MOUSE_LL) inst = 0;
else if (!inst || !GetModuleFileNameW( inst, module, MAX_PATH ))
{
SetLastError( ERROR_INVALID_PARAMETER );
return 0;
}
}
SERVER_START_REQ( set_hook )
{
req->id = id;
req->tid = tid;
req->unicode = unicode;
if (inst) /* make proc relative to the module base */
{
req->proc = (void *)((char *)proc - (char *)inst);
wine_server_add_data( req, module, strlenW(module) * sizeof(WCHAR) );
}
else req->proc = proc;
if (!wine_server_call_err( req )) handle = reply->handle;
}
SERVER_END_REQ;
TRACE( "%s %p %lx -> %p\n", hook_names[id-WH_MINHOOK], proc, tid, handle );
return handle;
}
/***********************************************************************
* call_hook_AtoW
*/
static LRESULT call_hook_AtoW( HOOKPROC proc, INT id, INT code, WPARAM wparam, LPARAM lparam )
{
LRESULT ret;
UNICODE_STRING usBuffer;
if (id != WH_CBT || code != HCBT_CREATEWND) ret = proc( code, wparam, lparam );
else
{
CBT_CREATEWNDA *cbtcwA = (CBT_CREATEWNDA *)lparam;
CBT_CREATEWNDW cbtcwW;
CREATESTRUCTW csW;
cbtcwW.lpcs = &csW;
cbtcwW.hwndInsertAfter = cbtcwA->hwndInsertAfter;
csW = *(CREATESTRUCTW *)cbtcwA->lpcs;
if (HIWORD(cbtcwA->lpcs->lpszName))
{
RtlCreateUnicodeStringFromAsciiz(&usBuffer,cbtcwA->lpcs->lpszName);
csW.lpszName = usBuffer.Buffer;
}
if (HIWORD(cbtcwA->lpcs->lpszClass))
{
RtlCreateUnicodeStringFromAsciiz(&usBuffer,cbtcwA->lpcs->lpszName);
csW.lpszClass = usBuffer.Buffer;
}
ret = proc( code, wparam, (LPARAM)&cbtcwW );
cbtcwA->hwndInsertAfter = cbtcwW.hwndInsertAfter;
if (HIWORD(csW.lpszName)) HeapFree( GetProcessHeap(), 0, (LPWSTR)csW.lpszName );
if (HIWORD(csW.lpszClass)) HeapFree( GetProcessHeap(), 0, (LPWSTR)csW.lpszClass );
}
return ret;
}
/***********************************************************************
* call_hook_WtoA
*/
static LRESULT call_hook_WtoA( HOOKPROC proc, INT id, INT code, WPARAM wparam, LPARAM lparam )
{
LRESULT ret;
if (id != WH_CBT || code != HCBT_CREATEWND) ret = proc( code, wparam, lparam );
else
{
CBT_CREATEWNDW *cbtcwW = (CBT_CREATEWNDW *)lparam;
CBT_CREATEWNDA cbtcwA;
CREATESTRUCTA csA;
cbtcwA.lpcs = &csA;
cbtcwA.hwndInsertAfter = cbtcwW->hwndInsertAfter;
csA = *(CREATESTRUCTA *)cbtcwW->lpcs;
if (HIWORD(cbtcwW->lpcs->lpszName))
csA.lpszName = HEAP_strdupWtoA( GetProcessHeap(), 0, cbtcwW->lpcs->lpszName );
if (HIWORD(cbtcwW->lpcs->lpszClass))
csA.lpszClass = HEAP_strdupWtoA( GetProcessHeap(), 0, cbtcwW->lpcs->lpszClass );
ret = proc( code, wparam, (LPARAM)&cbtcwA );
cbtcwW->hwndInsertAfter = cbtcwA.hwndInsertAfter;
if (HIWORD(csA.lpszName)) HeapFree( GetProcessHeap(), 0, (LPSTR)csA.lpszName );
if (HIWORD(csA.lpszClass)) HeapFree( GetProcessHeap(), 0, (LPSTR)csA.lpszClass );
}
return ret;
}
/***********************************************************************
* call_hook
*/
static LRESULT call_hook( HOOKPROC proc, INT id, INT code, WPARAM wparam, LPARAM lparam,
BOOL prev_unicode, BOOL next_unicode )
{
LRESULT ret;
if (TRACE_ON(relay))
DPRINTF( "%04lx:Call hook proc %p (id=%s,code=%x,wp=%08x,lp=%08lx)\n",
GetCurrentThreadId(), proc, hook_names[id-WH_MINHOOK], code, wparam, lparam );
if (!prev_unicode == !next_unicode) ret = proc( code, wparam, lparam );
else if (prev_unicode) ret = call_hook_WtoA( proc, id, code, wparam, lparam );
else ret = call_hook_AtoW( proc, id, code, wparam, lparam );
if (TRACE_ON(relay))
DPRINTF( "%04lx:Ret hook proc %p (id=%s,code=%x,wp=%08x,lp=%08lx) retval=%08lx\n",
GetCurrentThreadId(), proc, hook_names[id-WH_MINHOOK], code, wparam, lparam, ret );
return ret;
}
/***********************************************************************
* get_hook_proc
*
* Retrieve the hook procedure real value for a module-relative proc
*/
static HOOKPROC get_hook_proc( HOOKPROC proc, const WCHAR *module )
{
HMODULE mod;
if (!(mod = GetModuleHandleW(module)))
{
TRACE( "loading %s\n", debugstr_w(module) );
/* FIXME: the library will never be freed */
if (!(mod = LoadLibraryW(module))) return NULL;
}
return (HOOKPROC)((char *)mod + (ULONG_PTR)proc);
}
/***********************************************************************
* HOOK_CallHooks
*/
LRESULT HOOK_CallHooks( INT id, INT code, WPARAM wparam, LPARAM lparam, BOOL unicode )
{
MESSAGEQUEUE *queue = QUEUE_Current();
HOOKPROC proc = NULL;
HHOOK handle = 0;
DWORD pid = 0, tid = 0;
WCHAR module[MAX_PATH];
BOOL unicode_hook = FALSE;
LRESULT ret = 0;
if (!queue) return 0;
SERVER_START_REQ( start_hook_chain )
{
req->id = id;
wine_server_set_reply( req, module, sizeof(module)-sizeof(WCHAR) );
if (!wine_server_call( req ))
{
module[wine_server_reply_size(req) / sizeof(WCHAR)] = 0;
handle = reply->handle;
proc = reply->proc;
pid = reply->pid;
tid = reply->tid;
unicode_hook = reply->unicode;
}
}
SERVER_END_REQ;
if (tid)
{
TRACE( "calling hook in thread %04lx %s code %x wp %x lp %lx\n",
tid, hook_names[id-WH_MINHOOK], code, wparam, lparam );
switch(id)
{
case WH_KEYBOARD_LL:
MSG_SendInternalMessageTimeout( pid, tid, WM_WINE_KEYBOARD_LL_HOOK, wparam, lparam,
SMTO_ABORTIFHUNG, get_ll_hook_timeout(), &ret );
break;
case WH_MOUSE_LL:
MSG_SendInternalMessageTimeout( pid, tid, WM_WINE_MOUSE_LL_HOOK, wparam, lparam,
SMTO_ABORTIFHUNG, get_ll_hook_timeout(), &ret );
break;
}
}
else if (proc)
{
TRACE( "calling hook %p %s code %x wp %x lp %lx module %s\n",
proc, hook_names[id-WH_MINHOOK], code, wparam, lparam, debugstr_w(module) );
if (!module[0] || (proc = get_hook_proc( proc, module )) != NULL)
{
int locks = WIN_SuspendWndsLock();
HHOOK prev = queue->hook;
queue->hook = handle;
ret = call_hook( proc, id, code, wparam, lparam, unicode, unicode_hook );
queue->hook = prev;
WIN_RestoreWndsLock( locks );
}
}
else return 0;
SERVER_START_REQ( finish_hook_chain )
{
req->id = id;
wine_server_call( req );
}
SERVER_END_REQ;
return ret;
}
/***********************************************************************
* HOOK_IsHooked
*/
BOOL HOOK_IsHooked( INT id )
{
return TRUE; /* FIXME */
}
/***********************************************************************
* SetWindowsHookA (USER32.@)
*/
HHOOK WINAPI SetWindowsHookA( INT id, HOOKPROC proc )
{
return SetWindowsHookExA( id, proc, 0, GetCurrentThreadId() );
}
/***********************************************************************
* SetWindowsHookW (USER32.@)
*/
HHOOK WINAPI SetWindowsHookW( INT id, HOOKPROC proc )
{
return SetWindowsHookExW( id, proc, 0, GetCurrentThreadId() );
}
/***********************************************************************
* SetWindowsHookExA (USER32.@)
*/
HHOOK WINAPI SetWindowsHookExA( INT id, HOOKPROC proc, HINSTANCE inst, DWORD tid )
{
return set_windows_hook( id, proc, inst, tid, FALSE );
}
/***********************************************************************
* SetWindowsHookExW (USER32.@)
*/
HHOOK WINAPI SetWindowsHookExW( INT id, HOOKPROC proc, HINSTANCE inst, DWORD tid )
{
return set_windows_hook( id, proc, inst, tid, TRUE );
}
/***********************************************************************
* UnhookWindowsHook (USER32.@)
*/
BOOL WINAPI UnhookWindowsHook( INT id, HOOKPROC proc )
{
BOOL ret;
TRACE( "%s %p\n", hook_names[id-WH_MINHOOK], proc );
SERVER_START_REQ( remove_hook )
{
req->handle = 0;
req->id = id;
req->proc = proc;
ret = !wine_server_call_err( req );
}
SERVER_END_REQ;
return ret;
}
/***********************************************************************
* UnhookWindowsHookEx (USER32.@)
*/
BOOL WINAPI UnhookWindowsHookEx( HHOOK hhook )
{
BOOL ret;
TRACE( "%p\n", hhook );
SERVER_START_REQ( remove_hook )
{
req->handle = hhook;
ret = !wine_server_call_err( req );
}
SERVER_END_REQ;
return ret;
}
/***********************************************************************
* CallNextHookEx (USER32.@)
*/
LRESULT WINAPI CallNextHookEx( HHOOK hhook, INT code, WPARAM wparam, LPARAM lparam )
{
MESSAGEQUEUE *queue = QUEUE_Current();
HOOKPROC proc = NULL;
WCHAR module[MAX_PATH];
HHOOK handle = 0;
DWORD pid = 0, tid = 0;
INT id = 0;
BOOL prev_unicode = FALSE, next_unicode = FALSE;
LRESULT ret = 0;
if (!queue) return 0;
SERVER_START_REQ( get_next_hook )
{
req->handle = queue->hook;
wine_server_set_reply( req, module, sizeof(module)-sizeof(WCHAR) );
if (!wine_server_call_err( req ))
{
module[wine_server_reply_size(req) / sizeof(WCHAR)] = 0;
handle = reply->next;
id = reply->id;
pid = reply->pid;
tid = reply->tid;
proc = reply->proc;
prev_unicode = reply->prev_unicode;
next_unicode = reply->next_unicode;
}
}
SERVER_END_REQ;
if (tid)
{
TRACE( "calling hook in thread %04lx %s code %x wp %x lp %lx\n",
tid, hook_names[id-WH_MINHOOK], code, wparam, lparam );
switch(id)
{
case WH_KEYBOARD_LL:
MSG_SendInternalMessageTimeout( pid, tid, WM_WINE_KEYBOARD_LL_HOOK, wparam, lparam,
SMTO_ABORTIFHUNG, get_ll_hook_timeout(), &ret );
break;
case WH_MOUSE_LL:
MSG_SendInternalMessageTimeout( pid, tid, WM_WINE_MOUSE_LL_HOOK, wparam, lparam,
SMTO_ABORTIFHUNG, get_ll_hook_timeout(), &ret );
break;
}
}
else if (proc)
{
TRACE( "calling hook %p %s code %x wp %x lp %lx module %s\n",
proc, hook_names[id-WH_MINHOOK], code, wparam, lparam, debugstr_w(module) );
if (!module[0] || (proc = get_hook_proc( proc, module )) != NULL)
{
HHOOK prev = queue->hook;
queue->hook = handle;
ret = call_hook( proc, id, code, wparam, lparam, prev_unicode, next_unicode );
queue->hook = prev;
}
}
return ret;
}
/***********************************************************************
* CallMsgFilterA (USER32.@)
*/
BOOL WINAPI CallMsgFilterA( LPMSG msg, INT code )
{
if (HOOK_CallHooks( WH_SYSMSGFILTER, code, 0, (LPARAM)msg, FALSE )) return TRUE;
return HOOK_CallHooks( WH_MSGFILTER, code, 0, (LPARAM)msg, FALSE );
}
/***********************************************************************
* CallMsgFilterW (USER32.@)
*/
BOOL WINAPI CallMsgFilterW( LPMSG msg, INT code )
{
if (HOOK_CallHooks( WH_SYSMSGFILTER, code, 0, (LPARAM)msg, TRUE )) return TRUE;
return HOOK_CallHooks( WH_MSGFILTER, code, 0, (LPARAM)msg, TRUE );
}
/***********************************************************************
* SetWinEventHook [USER32.@]
*
* Set up an event hook for a set of events.
*
* PARAMS
* dwMin [I] Lowest event handled by pfnProc
* dwMax [I] Highest event handled by pfnProc
* hModule [I] DLL containing pfnProc
* pfnProc [I] Callback event hook function
* dwProcess [I] Process to get events from, or 0 for all processes
* dwThread [I] Thread to get events from, or 0 for all threads
* dwFlags [I] Flags indicating the status of pfnProc
*
* RETURNS
* Success: A handle representing the hook.
* Failure: A NULL handle.
*
* BUGS
* Not implemented.
*/
HWINEVENTHOOK WINAPI SetWinEventHook(DWORD dwMin, DWORD dwMax, HMODULE hModule,
WINEVENTPROC pfnProc, DWORD dwProcess,
DWORD dwThread, DWORD dwFlags)
{
FIXME("(%ld,%ld,%p,%p,%ld,%ld,0x%08lx)-stub!\n", dwMin, dwMax, hModule,
pfnProc, dwProcess, dwThread, dwFlags);
return 0;
}
/***********************************************************************
* UnhookWinEvent [USER32.@]
*
* Remove an event hook for a set of events.
*
* PARAMS
* hEventHook [I] Event hook to remove
*
* RETURNS
* Success: TRUE. The event hook has been removed.
* Failure: FALSE, if hEventHook is invalid.
*
* BUGS
* Not implemented.
*/
BOOL WINAPI UnhookWinEvent(HWINEVENTHOOK hEventHook)
{
FIXME("(%p)-stub!\n", hEventHook);
return (hEventHook != 0);
}
/***********************************************************************
* NotifyWinEvent [USER32.@]
*
* Inform the OS that an event has occurred.
*
* PARAMS
* dwEvent [I] Id of the event
* hWnd [I] Window holding the object that created the event
* nId [I] Type of object that created the event
* nChildId [I] Child object of nId, or CHILDID_SELF.
*
* RETURNS
* Nothing.
*
* BUGS
* Not implemented.
*/
void WINAPI NotifyWinEvent(DWORD dwEvent, HWND hWnd, LONG nId, LONG nChildId)
{
FIXME("(%ld,%p,%ld,%ld)-stub!\n", dwEvent, hWnd, nId, nChildId);
}
/***********************************************************************
* IsWinEventHookInstalled [USER32.@]
*
* Determine if an event hook is installed for an event.
*
* PARAMS
* dwEvent [I] Id of the event
*
* RETURNS
* TRUE, If there are any hooks installed for the event.
* FALSE, Otherwise.
*
* BUGS
* Not implemented.
*/
BOOL WINAPI IsWinEventHookInstalled(DWORD dwEvent)
{
FIXME("(%ld)-stub!\n", dwEvent);
return TRUE;
}
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