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wine-wine/dlls/user32/hook.c

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/*
* Windows hook functions
*
* Copyright 2002 Alexandre Julliard
* Copyright 2005 Dmitry Timoshkov
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, 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 OK
* 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 "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include <assert.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "winerror.h"
#include "win.h"
#include "user_private.h"
#include "wine/server.h"
#include "wine/unicode.h"
#include "wine/asm.h"
#include "wine/debug.h"
#include "winternl.h"
WINE_DEFAULT_DEBUG_CHANNEL(hook);
WINE_DECLARE_DEBUG_CHANNEL(relay);
struct hook_info
{
INT id;
void *proc;
void *handle;
DWORD pid, tid;
BOOL prev_unicode, next_unicode;
WCHAR module[MAX_PATH];
};
#define WH_WINEVENT (WH_MAXHOOK+1)
static const char * const hook_names[WH_WINEVENT - 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",
"WH_WINEVENT"
};
/***********************************************************************
* 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];
DWORD len;
if (!proc)
{
SetLastError( ERROR_INVALID_FILTER_PROC );
return 0;
}
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;
}
}
else /* system-global hook */
{
if (id == WH_KEYBOARD_LL || id == WH_MOUSE_LL) inst = 0;
else if (!inst)
{
SetLastError( ERROR_HOOK_NEEDS_HMOD );
return 0;
}
}
if (inst && (!(len = GetModuleFileNameW( inst, module, MAX_PATH )) || len >= MAX_PATH))
{
SetLastError( ERROR_INVALID_PARAMETER );
return 0;
}
SERVER_START_REQ( set_hook )
{
req->id = id;
req->pid = 0;
req->tid = tid;
req->event_min = EVENT_MIN;
req->event_max = EVENT_MAX;
req->flags = WINEVENT_INCONTEXT;
req->unicode = unicode;
if (inst) /* make proc relative to the module base */
{
req->proc = wine_server_client_ptr( (void *)((char *)proc - (char *)inst) );
wine_server_add_data( req, module, strlenW(module) * sizeof(WCHAR) );
}
else req->proc = wine_server_client_ptr( proc );
if (!wine_server_call_err( req ))
{
handle = wine_server_ptr_handle( reply->handle );
get_user_thread_info()->active_hooks = reply->active_hooks;
}
}
SERVER_END_REQ;
TRACE( "%s %p %x -> %p\n", hook_names[id-WH_MINHOOK], proc, tid, handle );
return handle;
}
#ifdef __i386__
/* Some apps pass a non-stdcall proc to SetWindowsHookExA,
* so we need a small assembly wrapper to call the proc.
*/
extern LRESULT HOOKPROC_wrapper( HOOKPROC proc,
INT code, WPARAM wParam, LPARAM lParam );
__ASM_GLOBAL_FUNC( HOOKPROC_wrapper,
"pushl %ebp\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
__ASM_CFI(".cfi_rel_offset %ebp,0\n\t")
"movl %esp,%ebp\n\t"
__ASM_CFI(".cfi_def_cfa_register %ebp\n\t")
"pushl %edi\n\t"
__ASM_CFI(".cfi_rel_offset %edi,-4\n\t")
"pushl %esi\n\t"
__ASM_CFI(".cfi_rel_offset %esi,-8\n\t")
"pushl %ebx\n\t"
__ASM_CFI(".cfi_rel_offset %ebx,-12\n\t")
"pushl 20(%ebp)\n\t"
"pushl 16(%ebp)\n\t"
"pushl 12(%ebp)\n\t"
"movl 8(%ebp),%eax\n\t"
"call *%eax\n\t"
"leal -12(%ebp),%esp\n\t"
"popl %ebx\n\t"
__ASM_CFI(".cfi_same_value %ebx\n\t")
"popl %esi\n\t"
__ASM_CFI(".cfi_same_value %esi\n\t")
"popl %edi\n\t"
__ASM_CFI(".cfi_same_value %edi\n\t")
"leave\n\t"
__ASM_CFI(".cfi_def_cfa %esp,4\n\t")
__ASM_CFI(".cfi_same_value %ebp\n\t")
"ret" )
#else
static inline LRESULT HOOKPROC_wrapper( HOOKPROC proc,
INT code, WPARAM wParam, LPARAM lParam )
{
return proc( code, wParam, lParam );
}
#endif /* __i386__ */
/***********************************************************************
* 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 = HOOKPROC_wrapper( proc, code, wparam, lparam );
else
{
CBT_CREATEWNDA *cbtcwA = (CBT_CREATEWNDA *)lparam;
CBT_CREATEWNDW cbtcwW;
CREATESTRUCTW csW;
LPWSTR nameW = NULL;
LPWSTR classW = NULL;
cbtcwW.lpcs = &csW;
cbtcwW.hwndInsertAfter = cbtcwA->hwndInsertAfter;
csW = *(CREATESTRUCTW *)cbtcwA->lpcs;
if (!IS_INTRESOURCE(cbtcwA->lpcs->lpszName))
{
RtlCreateUnicodeStringFromAsciiz(&usBuffer,cbtcwA->lpcs->lpszName);
csW.lpszName = nameW = usBuffer.Buffer;
}
if (!IS_INTRESOURCE(cbtcwA->lpcs->lpszClass))
{
RtlCreateUnicodeStringFromAsciiz(&usBuffer,cbtcwA->lpcs->lpszClass);
csW.lpszClass = classW = usBuffer.Buffer;
}
ret = HOOKPROC_wrapper( proc, code, wparam, (LPARAM)&cbtcwW );
cbtcwA->hwndInsertAfter = cbtcwW.hwndInsertAfter;
HeapFree( GetProcessHeap(), 0, nameW );
HeapFree( GetProcessHeap(), 0, classW );
}
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 = HOOKPROC_wrapper( proc, code, wparam, lparam );
else
{
CBT_CREATEWNDW *cbtcwW = (CBT_CREATEWNDW *)lparam;
CBT_CREATEWNDA cbtcwA;
CREATESTRUCTA csA;
int len;
LPSTR nameA = NULL;
LPSTR classA = NULL;
cbtcwA.lpcs = &csA;
cbtcwA.hwndInsertAfter = cbtcwW->hwndInsertAfter;
csA = *(CREATESTRUCTA *)cbtcwW->lpcs;
if (!IS_INTRESOURCE(cbtcwW->lpcs->lpszName)) {
len = WideCharToMultiByte( CP_ACP, 0, cbtcwW->lpcs->lpszName, -1, NULL, 0, NULL, NULL );
nameA = HeapAlloc( GetProcessHeap(), 0, len*sizeof(CHAR) );
WideCharToMultiByte( CP_ACP, 0, cbtcwW->lpcs->lpszName, -1, nameA, len, NULL, NULL );
csA.lpszName = nameA;
}
if (!IS_INTRESOURCE(cbtcwW->lpcs->lpszClass)) {
len = WideCharToMultiByte( CP_ACP, 0, cbtcwW->lpcs->lpszClass, -1, NULL, 0, NULL, NULL );
classA = HeapAlloc( GetProcessHeap(), 0, len*sizeof(CHAR) );
WideCharToMultiByte( CP_ACP, 0, cbtcwW->lpcs->lpszClass, -1, classA, len, NULL, NULL );
csA.lpszClass = classA;
}
ret = HOOKPROC_wrapper( proc, code, wparam, (LPARAM)&cbtcwA );
cbtcwW->hwndInsertAfter = cbtcwA.hwndInsertAfter;
HeapFree( GetProcessHeap(), 0, nameA );
HeapFree( GetProcessHeap(), 0, classA );
}
return ret;
}
/***********************************************************************
* call_hook_proc
*/
static LRESULT call_hook_proc( HOOKPROC proc, INT id, INT code, WPARAM wparam, LPARAM lparam,
BOOL prev_unicode, BOOL next_unicode )
{
LRESULT ret;
TRACE_(relay)( "\1Call hook proc %p (id=%s,code=%x,wp=%08lx,lp=%08lx)\n",
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 );
TRACE_(relay)( "\1Ret hook proc %p (id=%s,code=%x,wp=%08lx,lp=%08lx) retval=%08lx\n",
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
*/
void *get_hook_proc( void *proc, const WCHAR *module, HMODULE *free_module )
{
HMODULE mod;
GetModuleHandleExW( 0, module, &mod );
*free_module = mod;
if (!mod)
{
TRACE( "loading %s\n", debugstr_w(module) );
/* FIXME: the library will never be freed */
if (!(mod = LoadLibraryExW(module, NULL, LOAD_WITH_ALTERED_SEARCH_PATH))) return NULL;
}
return (char *)mod + (ULONG_PTR)proc;
}
/***********************************************************************
* call_hook
*
* Call hook either in current thread or send message to the destination
* thread.
*/
static LRESULT call_hook( struct hook_info *info, INT code, WPARAM wparam, LPARAM lparam )
{
DWORD_PTR ret = 0;
if (info->tid)
{
struct hook_extra_info h_extra;
h_extra.handle = info->handle;
h_extra.lparam = lparam;
TRACE( "calling hook in thread %04x %s code %x wp %lx lp %lx\n",
info->tid, hook_names[info->id-WH_MINHOOK], code, wparam, lparam );
switch(info->id)
{
case WH_KEYBOARD_LL:
MSG_SendInternalMessageTimeout( info->pid, info->tid, WM_WINE_KEYBOARD_LL_HOOK,
wparam, (LPARAM)&h_extra, SMTO_ABORTIFHUNG,
get_ll_hook_timeout(), &ret );
break;
case WH_MOUSE_LL:
MSG_SendInternalMessageTimeout( info->pid, info->tid, WM_WINE_MOUSE_LL_HOOK,
wparam, (LPARAM)&h_extra, SMTO_ABORTIFHUNG,
get_ll_hook_timeout(), &ret );
break;
default:
ERR("Unknown hook id %d\n", info->id);
assert(0);
break;
}
}
else if (info->proc)
{
struct user_thread_info *thread_info = get_user_thread_info();
HMODULE free_module = 0;
/*
* Windows protects from stack overflow in recursive hook calls. Different Windows
* allow different depths.
*/
if (thread_info->hook_call_depth >= 25)
{
WARN("Too many hooks called recursively, skipping call.\n");
return 0;
}
TRACE( "calling hook %p %s code %x wp %lx lp %lx module %s\n",
info->proc, hook_names[info->id-WH_MINHOOK], code, wparam,
lparam, debugstr_w(info->module) );
if (!info->module[0] ||
(info->proc = get_hook_proc( info->proc, info->module, &free_module )) != NULL)
{
HHOOK prev = thread_info->hook;
BOOL prev_unicode = thread_info->hook_unicode;
thread_info->hook = info->handle;
thread_info->hook_unicode = info->next_unicode;
thread_info->hook_call_depth++;
ret = call_hook_proc( info->proc, info->id, code, wparam, lparam,
info->prev_unicode, info->next_unicode );
thread_info->hook = prev;
thread_info->hook_unicode = prev_unicode;
thread_info->hook_call_depth--;
if (free_module) FreeLibrary(free_module);
}
}
if (info->id == WH_KEYBOARD_LL || info->id == WH_MOUSE_LL)
interlocked_xchg_add( &global_key_state_counter, 1 ); /* force refreshing the key state cache */
return ret;
}
/***********************************************************************
* HOOK_IsHooked
*/
static BOOL HOOK_IsHooked( INT id )
{
struct user_thread_info *thread_info = get_user_thread_info();
if (!thread_info->active_hooks) return TRUE;
return (thread_info->active_hooks & (1 << (id - WH_MINHOOK))) != 0;
}
/***********************************************************************
* HOOK_CallHooks
*/
LRESULT HOOK_CallHooks( INT id, INT code, WPARAM wparam, LPARAM lparam, BOOL unicode )
{
struct user_thread_info *thread_info = get_user_thread_info();
struct hook_info info;
DWORD_PTR ret;
USER_CheckNotLock();
if (!HOOK_IsHooked( id ))
{
TRACE( "skipping hook %s mask %x\n", hook_names[id-WH_MINHOOK], thread_info->active_hooks );
return 0;
}
ZeroMemory( &info, sizeof(info) - sizeof(info.module) );
info.prev_unicode = unicode;
info.id = id;
SERVER_START_REQ( start_hook_chain )
{
req->id = info.id;
req->event = EVENT_MIN;
wine_server_set_reply( req, info.module, sizeof(info.module)-sizeof(WCHAR) );
if (!wine_server_call( req ))
{
info.module[wine_server_reply_size(req) / sizeof(WCHAR)] = 0;
info.handle = wine_server_ptr_handle( reply->handle );
info.pid = reply->pid;
info.tid = reply->tid;
info.proc = wine_server_get_ptr( reply->proc );
info.next_unicode = reply->unicode;
thread_info->active_hooks = reply->active_hooks;
}
}
SERVER_END_REQ;
if (!info.tid && !info.proc) return 0;
ret = call_hook( &info, code, wparam, lparam );
SERVER_START_REQ( finish_hook_chain )
{
req->id = id;
wine_server_call( req );
}
SERVER_END_REQ;
return ret;
}
/***********************************************************************
* 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 = wine_server_client_ptr( proc );
ret = !wine_server_call_err( req );
if (ret) get_user_thread_info()->active_hooks = reply->active_hooks;
}
SERVER_END_REQ;
if (!ret && GetLastError() == ERROR_INVALID_HANDLE) SetLastError( ERROR_INVALID_HOOK_HANDLE );
return ret;
}
/***********************************************************************
* UnhookWindowsHookEx (USER32.@)
*/
BOOL WINAPI UnhookWindowsHookEx( HHOOK hhook )
{
BOOL ret;
SERVER_START_REQ( remove_hook )
{
req->handle = wine_server_user_handle( hhook );
req->id = 0;
ret = !wine_server_call_err( req );
if (ret) get_user_thread_info()->active_hooks = reply->active_hooks;
}
SERVER_END_REQ;
if (!ret && GetLastError() == ERROR_INVALID_HANDLE) SetLastError( ERROR_INVALID_HOOK_HANDLE );
return ret;
}
/***********************************************************************
* CallNextHookEx (USER32.@)
*/
LRESULT WINAPI CallNextHookEx( HHOOK hhook, INT code, WPARAM wparam, LPARAM lparam )
{
struct user_thread_info *thread_info = get_user_thread_info();
struct hook_info info;
ZeroMemory( &info, sizeof(info) - sizeof(info.module) );
SERVER_START_REQ( get_hook_info )
{
req->handle = wine_server_user_handle( thread_info->hook );
req->get_next = 1;
req->event = EVENT_MIN;
wine_server_set_reply( req, info.module, sizeof(info.module)-sizeof(WCHAR) );
if (!wine_server_call_err( req ))
{
info.module[wine_server_reply_size(req) / sizeof(WCHAR)] = 0;
info.handle = wine_server_ptr_handle( reply->handle );
info.id = reply->id;
info.pid = reply->pid;
info.tid = reply->tid;
info.proc = wine_server_get_ptr( reply->proc );
info.next_unicode = reply->unicode;
}
}
SERVER_END_REQ;
info.prev_unicode = thread_info->hook_unicode;
return call_hook( &info, code, wparam, lparam );
}
LRESULT call_current_hook( HHOOK hhook, INT code, WPARAM wparam, LPARAM lparam )
{
struct hook_info info;
ZeroMemory( &info, sizeof(info) - sizeof(info.module) );
SERVER_START_REQ( get_hook_info )
{
req->handle = wine_server_user_handle( hhook );
req->get_next = 0;
req->event = EVENT_MIN;
wine_server_set_reply( req, info.module, sizeof(info.module)-sizeof(WCHAR) );
if (!wine_server_call_err( req ))
{
info.module[wine_server_reply_size(req) / sizeof(WCHAR)] = 0;
info.handle = wine_server_ptr_handle( reply->handle );
info.id = reply->id;
info.pid = reply->pid;
info.tid = reply->tid;
info.proc = wine_server_get_ptr( reply->proc );
info.next_unicode = reply->unicode;
}
}
SERVER_END_REQ;
info.prev_unicode = TRUE; /* assume Unicode for this function */
return call_hook( &info, code, wparam, lparam );
}
/***********************************************************************
* 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
* event_min [I] Lowest event handled by pfnProc
* event_max [I] Highest event handled by pfnProc
* inst [I] DLL containing pfnProc
* proc [I] Callback event hook function
* pid [I] Process to get events from, or 0 for all processes
* tid [I] Thread to get events from, or 0 for all threads
* flags [I] Flags indicating the status of pfnProc
*
* RETURNS
* Success: A handle representing the hook.
* Failure: A NULL handle.
*/
HWINEVENTHOOK WINAPI SetWinEventHook(DWORD event_min, DWORD event_max,
HMODULE inst, WINEVENTPROC proc,
DWORD pid, DWORD tid, DWORD flags)
{
HWINEVENTHOOK handle = 0;
WCHAR module[MAX_PATH];
DWORD len;
TRACE("%d,%d,%p,%p,%08x,%04x,%08x\n", event_min, event_max, inst,
proc, pid, tid, flags);
if (inst)
{
if (!(len = GetModuleFileNameW(inst, module, MAX_PATH)) || len >= MAX_PATH)
inst = 0;
}
if ((flags & WINEVENT_INCONTEXT) && !inst)
{
SetLastError(ERROR_HOOK_NEEDS_HMOD);
return 0;
}
if (event_min > event_max)
{
SetLastError(ERROR_INVALID_HOOK_FILTER);
return 0;
}
/* FIXME: what if the tid or pid belongs to another process? */
if (tid) /* thread-local hook */
inst = 0;
SERVER_START_REQ( set_hook )
{
req->id = WH_WINEVENT;
req->pid = pid;
req->tid = tid;
req->event_min = event_min;
req->event_max = event_max;
req->flags = flags;
req->unicode = 1;
if (inst) /* make proc relative to the module base */
{
req->proc = wine_server_client_ptr( (void *)((char *)proc - (char *)inst) );
wine_server_add_data( req, module, strlenW(module) * sizeof(WCHAR) );
}
else req->proc = wine_server_client_ptr( proc );
if (!wine_server_call_err( req ))
{
handle = wine_server_ptr_handle( reply->handle );
get_user_thread_info()->active_hooks = reply->active_hooks;
}
}
SERVER_END_REQ;
TRACE("-> %p\n", handle);
return handle;
}
/***********************************************************************
* 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.
*/
BOOL WINAPI UnhookWinEvent(HWINEVENTHOOK hEventHook)
{
BOOL ret;
SERVER_START_REQ( remove_hook )
{
req->handle = wine_server_user_handle( hEventHook );
req->id = WH_WINEVENT;
ret = !wine_server_call_err( req );
if (ret) get_user_thread_info()->active_hooks = reply->active_hooks;
}
SERVER_END_REQ;
return ret;
}
static inline BOOL find_first_hook(DWORD id, DWORD event, HWND hwnd, LONG object_id,
LONG child_id, struct hook_info *info)
{
struct user_thread_info *thread_info = get_user_thread_info();
BOOL ret;
if (!HOOK_IsHooked( id ))
{
TRACE( "skipping hook %s mask %x\n", hook_names[id-WH_MINHOOK], thread_info->active_hooks );
return FALSE;
}
SERVER_START_REQ( start_hook_chain )
{
req->id = id;
req->event = event;
req->window = wine_server_user_handle( hwnd );
req->object_id = object_id;
req->child_id = child_id;
wine_server_set_reply( req, info->module, sizeof(info->module)-sizeof(WCHAR) );
ret = !wine_server_call( req );
if (ret)
{
info->module[wine_server_reply_size(req) / sizeof(WCHAR)] = 0;
info->handle = wine_server_ptr_handle( reply->handle );
info->proc = wine_server_get_ptr( reply->proc );
info->tid = reply->tid;
thread_info->active_hooks = reply->active_hooks;
}
}
SERVER_END_REQ;
return ret && (info->tid || info->proc);
}
static inline BOOL find_next_hook(DWORD event, HWND hwnd, LONG object_id,
LONG child_id, struct hook_info *info)
{
BOOL ret;
SERVER_START_REQ( get_hook_info )
{
req->handle = wine_server_user_handle( info->handle );
req->get_next = 1;
req->event = event;
req->window = wine_server_user_handle( hwnd );
req->object_id = object_id;
req->child_id = child_id;
wine_server_set_reply( req, info->module, sizeof(info->module)-sizeof(WCHAR) );
ret = !wine_server_call( req );
if (ret)
{
info->module[wine_server_reply_size(req) / sizeof(WCHAR)] = 0;
info->handle = wine_server_ptr_handle( reply->handle );
info->proc = wine_server_get_ptr( reply->proc );
info->tid = reply->tid;
}
}
SERVER_END_REQ;
return ret;
}
static inline void find_hook_close(DWORD id)
{
SERVER_START_REQ( finish_hook_chain )
{
req->id = id;
wine_server_call( req );
}
SERVER_END_REQ;
}
/***********************************************************************
* NotifyWinEvent [USER32.@]
*
* Inform the OS that an event has occurred.
*
* PARAMS
* event [I] Id of the event
* hwnd [I] Window holding the object that created the event
* object_id [I] Type of object that created the event
* child_id [I] Child object of nId, or CHILDID_SELF.
*
* RETURNS
* Nothing.
*/
void WINAPI NotifyWinEvent(DWORD event, HWND hwnd, LONG object_id, LONG child_id)
{
struct hook_info info;
TRACE("%04x,%p,%d,%d\n", event, hwnd, object_id, child_id);
if (!hwnd)
{
SetLastError(ERROR_INVALID_WINDOW_HANDLE);
return;
}
USER_CheckNotLock();
#if 0
if (event & 0x80000000)
{
/* FIXME: on 64-bit platforms we need to invent some other way for
* passing parameters, nId and nChildId can't hold full [W|L]PARAM.
* struct call_hook *hook = (LRESULT *)hWnd;
* wparam = hook->wparam;
* lparam = hook->lparam;
*/
LRESULT *ret = (LRESULT *)hwnd;
INT id, code, unicode;
id = (dwEvent & 0x7fff0000) >> 16;
code = event & 0x7fff;
unicode = event & 0x8000;
*ret = HOOK_CallHooks(id, code, object_id, child_id, unicode);
return;
}
#endif
if (!find_first_hook(WH_WINEVENT, event, hwnd, object_id, child_id, &info)) return;
do
{
WINEVENTPROC proc = info.proc;
if (proc)
{
HMODULE free_module = 0;
TRACE( "calling WH_WINEVENT hook %p event %x hwnd %p %x %x module %s\n",
proc, event, hwnd, object_id, child_id, debugstr_w(info.module) );
if (!info.module[0] || (proc = get_hook_proc( proc, info.module, &free_module )) != NULL)
{
TRACE_(relay)( "\1Call winevent hook proc %p (hhook=%p,event=%x,hwnd=%p,object_id=%x,child_id=%x,tid=%04x,time=%x)\n",
proc, info.handle, event, hwnd, object_id,
child_id, GetCurrentThreadId(), GetCurrentTime());
proc( info.handle, event, hwnd, object_id, child_id,
GetCurrentThreadId(), GetCurrentTime());
TRACE_(relay)( "\1Ret winevent hook proc %p (hhook=%p,event=%x,hwnd=%p,object_id=%x,child_id=%x,tid=%04x,time=%x)\n",
proc, info.handle, event, hwnd, object_id,
child_id, GetCurrentThreadId(), GetCurrentTime());
if (free_module) FreeLibrary(free_module);
}
}
else
break;
}
while (find_next_hook(event, hwnd, object_id, child_id, &info));
find_hook_close(WH_WINEVENT);
}
/***********************************************************************
* 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: Needed by Office 2007 installer */
WARN("(%d)-stub!\n", dwEvent);
return TRUE;
}
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