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https://github.com/reactos/reactos.git
synced 2024-08-28 22:28:36 +00:00
![Pierre Schweitzer](/assets/img/avatar_default.png)
A bit of history: in r71528, I tried to fix our explorer often crashing while browsing directories. It was linked to the fact that a notification result may arrive while the notification structure had already been deleted. The fix for this was actually broken and was leading to a double leak: the notification structure was leaked. But also the handle to the directory that had been browsed! This means that the directory couldn't be modified anymore as a leaked handle to it was still open. Actually, when notifications are cancel, the kernel properly calls the notification routine, but with a specific error code. So the correct fix is to stop handling that notification when we receive this error code. This is the correct fix with no leaks. This commit is a complete r71528 revert with the appropriate fix. CORE-10941 CORE-12843
861 lines
26 KiB
C
861 lines
26 KiB
C
/*
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* shell change notification
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*
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* Copyright 2000 Juergen Schmied
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#define WIN32_NO_STATUS
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#define _INC_WINDOWS
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#define COBJMACROS
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#define NONAMELESSUNION
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#define NONAMELESSSTRUCT
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#define BUFFER_SIZE 1024
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#include <windef.h>
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#include <winbase.h>
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#include <shlobj.h>
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#include <strsafe.h>
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#include <undocshell.h>
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#include <shlwapi.h>
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#include <wine/debug.h>
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#include <wine/list.h>
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#include <process.h>
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#include <shellutils.h>
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#include "pidl.h"
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WINE_DEFAULT_DEBUG_CHANNEL(shell);
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static CRITICAL_SECTION SHELL32_ChangenotifyCS;
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static CRITICAL_SECTION_DEBUG critsect_debug =
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{
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0, 0, &SHELL32_ChangenotifyCS,
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{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
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0, 0, { (DWORD_PTR)(__FILE__ ": SHELL32_ChangenotifyCS") }
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};
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static CRITICAL_SECTION SHELL32_ChangenotifyCS = { &critsect_debug, -1, 0, 0, 0, 0 };
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#ifdef __REACTOS__
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typedef struct {
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PCIDLIST_ABSOLUTE pidl;
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BOOL fRecursive;
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/* File system notification items */
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HANDLE hDirectory; /* Directory handle */
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WCHAR wstrDirectory[MAX_PATH]; /* Directory name */
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OVERLAPPED overlapped; /* Overlapped structure */
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BYTE *buffer; /* Async buffer to fill */
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BYTE *backBuffer; /* Back buffer to swap buffer into */
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} SHChangeNotifyEntryInternal, *LPNOTIFYREGISTER;
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#else
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typedef SHChangeNotifyEntry *LPNOTIFYREGISTER;
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#endif
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/* internal list of notification clients (internal) */
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typedef struct _NOTIFICATIONLIST
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{
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struct list entry;
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HWND hwnd; /* window to notify */
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DWORD uMsg; /* message to send */
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LPNOTIFYREGISTER apidl; /* array of entries to watch*/
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UINT cidl; /* number of pidls in array */
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LONG wEventMask; /* subscribed events */
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DWORD dwFlags; /* client flags */
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ULONG id;
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} NOTIFICATIONLIST, *LPNOTIFICATIONLIST;
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#ifdef __REACTOS__
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VOID _ProcessNotification(LPNOTIFYREGISTER item);
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BOOL _OpenDirectory(LPNOTIFYREGISTER item);
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static void CALLBACK _RequestTermination(ULONG_PTR arg);
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static void CALLBACK _RequestAllTermination(ULONG_PTR arg);
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static void CALLBACK _AddDirectoryProc(ULONG_PTR arg);
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static VOID _BeginRead(LPNOTIFYREGISTER item);
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static unsigned int WINAPI _RunAsyncThreadProc(LPVOID arg);
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#endif
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static struct list notifications = LIST_INIT( notifications );
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static LONG next_id;
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#ifdef __REACTOS__
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HANDLE m_hThread;
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UINT m_dwThreadId;
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BOOL m_bTerminate;
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#endif
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#define SHCNE_NOITEMEVENTS ( \
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SHCNE_ASSOCCHANGED )
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#define SHCNE_ONEITEMEVENTS ( \
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SHCNE_ATTRIBUTES | SHCNE_CREATE | SHCNE_DELETE | SHCNE_DRIVEADD | \
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SHCNE_DRIVEADDGUI | SHCNE_DRIVEREMOVED | SHCNE_FREESPACE | \
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SHCNE_MEDIAINSERTED | SHCNE_MEDIAREMOVED | SHCNE_MKDIR | \
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SHCNE_NETSHARE | SHCNE_NETUNSHARE | SHCNE_RMDIR | \
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SHCNE_SERVERDISCONNECT | SHCNE_UPDATEDIR | SHCNE_UPDATEIMAGE )
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#define SHCNE_TWOITEMEVENTS ( \
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SHCNE_RENAMEFOLDER | SHCNE_RENAMEITEM | SHCNE_UPDATEITEM )
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/* for dumping events */
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static const char * DumpEvent( LONG event )
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{
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if( event == SHCNE_ALLEVENTS )
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return "SHCNE_ALLEVENTS";
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#define DUMPEV(x) ,( event & SHCNE_##x )? #x " " : ""
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return wine_dbg_sprintf( "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s"
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DUMPEV(RENAMEITEM)
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DUMPEV(CREATE)
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DUMPEV(DELETE)
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DUMPEV(MKDIR)
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DUMPEV(RMDIR)
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DUMPEV(MEDIAINSERTED)
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DUMPEV(MEDIAREMOVED)
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DUMPEV(DRIVEREMOVED)
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DUMPEV(DRIVEADD)
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DUMPEV(NETSHARE)
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DUMPEV(NETUNSHARE)
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DUMPEV(ATTRIBUTES)
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DUMPEV(UPDATEDIR)
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DUMPEV(UPDATEITEM)
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DUMPEV(SERVERDISCONNECT)
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DUMPEV(UPDATEIMAGE)
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DUMPEV(DRIVEADDGUI)
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DUMPEV(RENAMEFOLDER)
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DUMPEV(FREESPACE)
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DUMPEV(EXTENDED_EVENT)
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DUMPEV(ASSOCCHANGED)
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DUMPEV(INTERRUPT)
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);
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#undef DUMPEV
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}
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static const char * NodeName(const NOTIFICATIONLIST *item)
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{
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const char *str;
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WCHAR path[MAX_PATH];
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if(SHGetPathFromIDListW(item->apidl[0].pidl, path ))
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str = wine_dbg_sprintf("%s", debugstr_w(path));
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else
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str = wine_dbg_sprintf("<not a disk file>" );
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return str;
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}
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static void DeleteNode(LPNOTIFICATIONLIST item)
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{
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UINT i;
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TRACE("item=%p\n", item);
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/* remove item from list */
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list_remove( &item->entry );
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/* free the item */
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for (i=0; i<item->cidl; i++)
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#ifdef __REACTOS__
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{
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QueueUserAPC(_RequestTermination, m_hThread, (ULONG_PTR) &item->apidl[i] );
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WaitForSingleObjectEx(m_hThread, 100, FALSE);
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#endif
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SHFree((LPITEMIDLIST)item->apidl[i].pidl);
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#ifdef __REACTOS__
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SHFree(item->apidl[i].buffer);
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SHFree(item->apidl[i].backBuffer);
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}
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#endif
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SHFree(item->apidl);
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SHFree(item);
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}
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void InitChangeNotifications(void)
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{
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#ifdef __REACTOS__
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m_hThread = NULL;
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#endif
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}
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void FreeChangeNotifications(void)
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{
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LPNOTIFICATIONLIST ptr, next;
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TRACE("\n");
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EnterCriticalSection(&SHELL32_ChangenotifyCS);
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LIST_FOR_EACH_ENTRY_SAFE( ptr, next, ¬ifications, NOTIFICATIONLIST, entry )
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DeleteNode( ptr );
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LeaveCriticalSection(&SHELL32_ChangenotifyCS);
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#ifdef __REACTOS__
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QueueUserAPC(_RequestAllTermination, m_hThread, (ULONG_PTR) NULL );
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#endif
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DeleteCriticalSection(&SHELL32_ChangenotifyCS);
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}
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/*************************************************************************
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* SHChangeNotifyRegister [SHELL32.2]
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*
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*/
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ULONG WINAPI
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SHChangeNotifyRegister(
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HWND hwnd,
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int fSources,
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LONG wEventMask,
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UINT uMsg,
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int cItems,
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SHChangeNotifyEntry *lpItems)
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{
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LPNOTIFICATIONLIST item;
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int i;
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item = SHAlloc(sizeof(NOTIFICATIONLIST));
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TRACE("(%p,0x%08x,0x%08x,0x%08x,%d,%p) item=%p\n",
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hwnd, fSources, wEventMask, uMsg, cItems, lpItems, item);
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#ifdef __REACTOS__
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if (!m_hThread)
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m_hThread = (HANDLE) _beginthreadex(NULL, 0, _RunAsyncThreadProc, NULL, 0, &m_dwThreadId);
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#endif
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item->cidl = cItems;
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#ifdef __REACTOS__
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item->apidl = SHAlloc(sizeof(SHChangeNotifyEntryInternal) * cItems);
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#else
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item->apidl = SHAlloc(sizeof(SHChangeNotifyEntry) * cItems);
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#endif
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for(i=0;i<cItems;i++)
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{
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#ifdef __REACTOS__
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ZeroMemory(&item->apidl[i], sizeof(SHChangeNotifyEntryInternal));
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#endif
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item->apidl[i].pidl = ILClone(lpItems[i].pidl);
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item->apidl[i].fRecursive = lpItems[i].fRecursive;
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#ifdef __REACTOS__
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item->apidl[i].buffer = SHAlloc(BUFFER_SIZE);
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item->apidl[i].backBuffer = SHAlloc(BUFFER_SIZE);
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item->apidl[i].overlapped.hEvent = &item->apidl[i];
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if (fSources & SHCNRF_InterruptLevel)
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{
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if (_OpenDirectory( &item->apidl[i] ))
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{
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QueueUserAPC( _AddDirectoryProc, m_hThread, (ULONG_PTR) &item->apidl[i] );
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}
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}
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#endif
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}
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item->hwnd = hwnd;
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item->uMsg = uMsg;
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item->wEventMask = wEventMask;
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item->dwFlags = fSources;
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item->id = InterlockedIncrement( &next_id );
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TRACE("new node: %s\n", NodeName( item ));
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EnterCriticalSection(&SHELL32_ChangenotifyCS);
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list_add_tail( ¬ifications, &item->entry );
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LeaveCriticalSection(&SHELL32_ChangenotifyCS);
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return item->id;
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}
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/*************************************************************************
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* SHChangeNotifyDeregister [SHELL32.4]
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*/
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BOOL WINAPI SHChangeNotifyDeregister(ULONG hNotify)
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{
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LPNOTIFICATIONLIST node;
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TRACE("(0x%08x)\n", hNotify);
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EnterCriticalSection(&SHELL32_ChangenotifyCS);
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LIST_FOR_EACH_ENTRY( node, ¬ifications, NOTIFICATIONLIST, entry )
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{
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if (node->id == hNotify)
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{
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DeleteNode( node );
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LeaveCriticalSection(&SHELL32_ChangenotifyCS);
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return TRUE;
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}
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}
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LeaveCriticalSection(&SHELL32_ChangenotifyCS);
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return FALSE;
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}
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/*************************************************************************
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* SHChangeNotifyUpdateEntryList [SHELL32.5]
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*/
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BOOL WINAPI SHChangeNotifyUpdateEntryList(DWORD unknown1, DWORD unknown2,
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DWORD unknown3, DWORD unknown4)
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{
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FIXME("(0x%08x, 0x%08x, 0x%08x, 0x%08x)\n",
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unknown1, unknown2, unknown3, unknown4);
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return TRUE;
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}
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struct new_delivery_notification
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{
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LONG event;
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DWORD pidl1_size;
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DWORD pidl2_size;
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LPITEMIDLIST pidls[2];
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BYTE data[1];
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};
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static BOOL should_notify( LPCITEMIDLIST changed, LPCITEMIDLIST watched, BOOL sub )
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{
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TRACE("%p %p %d\n", changed, watched, sub );
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if ( !watched )
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return FALSE;
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if (ILIsEqual( watched, changed ) )
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return TRUE;
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if( sub && ILIsParent( watched, changed, FALSE ) )
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return TRUE;
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return FALSE;
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}
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/*************************************************************************
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* SHChangeNotify [SHELL32.@]
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*/
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void WINAPI SHChangeNotify(LONG wEventId, UINT uFlags, LPCVOID dwItem1, LPCVOID dwItem2)
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{
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struct notification_recipients {
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struct list entry;
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HWND hwnd;
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DWORD msg;
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DWORD flags;
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} *cur, *next;
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HANDLE shared_data = NULL;
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LPITEMIDLIST Pidls[2];
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LPNOTIFICATIONLIST ptr;
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struct list recipients;
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Pidls[0] = NULL;
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Pidls[1] = NULL;
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TRACE("(0x%08x,0x%08x,%p,%p)\n", wEventId, uFlags, dwItem1, dwItem2);
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if(uFlags & ~(SHCNF_TYPE|SHCNF_FLUSH))
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FIXME("ignoring unsupported flags: %x\n", uFlags);
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if( ( wEventId & SHCNE_NOITEMEVENTS ) && ( dwItem1 || dwItem2 ) )
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{
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TRACE("dwItem1 and dwItem2 are not zero, but should be\n");
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dwItem1 = 0;
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dwItem2 = 0;
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return;
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}
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else if( ( wEventId & SHCNE_ONEITEMEVENTS ) && dwItem2 )
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{
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TRACE("dwItem2 is not zero, but should be\n");
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dwItem2 = 0;
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return;
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}
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if( ( ( wEventId & SHCNE_NOITEMEVENTS ) &&
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( wEventId & ~(SHCNE_NOITEMEVENTS | SHCNE_INTERRUPT) ) ) ||
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( ( wEventId & SHCNE_ONEITEMEVENTS ) &&
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( wEventId & ~(SHCNE_ONEITEMEVENTS | SHCNE_INTERRUPT) ) ) ||
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( ( wEventId & SHCNE_TWOITEMEVENTS ) &&
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( wEventId & ~(SHCNE_TWOITEMEVENTS | SHCNE_INTERRUPT) ) ) )
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{
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WARN("mutually incompatible events listed\n");
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return;
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}
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/* convert paths in IDLists*/
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switch (uFlags & SHCNF_TYPE)
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{
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case SHCNF_PATHA:
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if (dwItem1) Pidls[0] = SHSimpleIDListFromPathA(dwItem1); //FIXME
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if (dwItem2) Pidls[1] = SHSimpleIDListFromPathA(dwItem2); //FIXME
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break;
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case SHCNF_PATHW:
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if (dwItem1) Pidls[0] = SHSimpleIDListFromPathW(dwItem1);
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if (dwItem2) Pidls[1] = SHSimpleIDListFromPathW(dwItem2);
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#ifdef __REACTOS__
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if (wEventId & (SHCNE_MKDIR | SHCNE_RMDIR | SHCNE_UPDATEDIR | SHCNE_RENAMEFOLDER))
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{
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/*
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* The last items in the ID are currently files. So we chop off the last
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* entry, and create a new one using a find data struct.
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*/
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if (dwItem1 && Pidls[0]){
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WIN32_FIND_DATAW wfd;
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LPITEMIDLIST oldpidl, newpidl;
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LPWSTR p = PathFindFileNameW((LPCWSTR)dwItem1);
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ILRemoveLastID(Pidls[0]);
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lstrcpynW(&wfd.cFileName[0], p, MAX_PATH);
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wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY;
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newpidl = _ILCreateFromFindDataW(&wfd);
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oldpidl = ILClone(Pidls[0]);
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ILFree(Pidls[0]);
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Pidls[0] = ILCombine(oldpidl, newpidl);
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ILFree(newpidl);
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ILFree(oldpidl);
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}
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if (dwItem2 && Pidls[1]){
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WIN32_FIND_DATAW wfd;
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LPITEMIDLIST oldpidl, newpidl;
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LPWSTR p = PathFindFileNameW((LPCWSTR)dwItem2);
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ILRemoveLastID(Pidls[1]);
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lstrcpynW(&wfd.cFileName[0], p, MAX_PATH);
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wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY;
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newpidl = _ILCreateFromFindDataW(&wfd);
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oldpidl = ILClone(Pidls[0]);
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ILFree(Pidls[1]);
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Pidls[1] = ILCombine(oldpidl, newpidl);
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ILFree(newpidl);
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ILFree(oldpidl);
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}
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}
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#endif
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break;
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case SHCNF_IDLIST:
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Pidls[0] = ILClone(dwItem1);
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Pidls[1] = ILClone(dwItem2);
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break;
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case SHCNF_PRINTERA:
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case SHCNF_PRINTERW:
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FIXME("SHChangeNotify with (uFlags & SHCNF_PRINTER)\n");
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return;
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case SHCNF_DWORD:
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default:
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FIXME("unknown type %08x\n", uFlags & SHCNF_TYPE);
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return;
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}
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list_init(&recipients);
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EnterCriticalSection(&SHELL32_ChangenotifyCS);
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LIST_FOR_EACH_ENTRY( ptr, ¬ifications, NOTIFICATIONLIST, entry )
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{
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struct notification_recipients *item;
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BOOL notify = FALSE;
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DWORD i;
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for( i=0; (i<ptr->cidl) && !notify ; i++ )
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{
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LPCITEMIDLIST pidl = ptr->apidl[i].pidl;
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BOOL subtree = ptr->apidl[i].fRecursive;
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if (wEventId & ptr->wEventMask)
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{
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if( !pidl ) /* all ? */
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notify = TRUE;
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else if( wEventId & SHCNE_NOITEMEVENTS )
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notify = TRUE;
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else if( wEventId & ( SHCNE_ONEITEMEVENTS | SHCNE_TWOITEMEVENTS ) )
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notify = should_notify( Pidls[0], pidl, subtree );
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else if( wEventId & SHCNE_TWOITEMEVENTS )
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notify = should_notify( Pidls[1], pidl, subtree );
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}
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}
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if( !notify )
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continue;
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item = SHAlloc(sizeof(struct notification_recipients));
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if(!item) {
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ERR("out of memory\n");
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continue;
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}
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|
|
|
item->hwnd = ptr->hwnd;
|
|
item->msg = ptr->uMsg;
|
|
item->flags = ptr->dwFlags;
|
|
list_add_tail(&recipients, &item->entry);
|
|
}
|
|
LeaveCriticalSection(&SHELL32_ChangenotifyCS);
|
|
|
|
LIST_FOR_EACH_ENTRY_SAFE(cur, next, &recipients, struct notification_recipients, entry)
|
|
{
|
|
TRACE("notifying %p, event %s(%x)\n", cur->hwnd, DumpEvent(wEventId), wEventId);
|
|
|
|
if (cur->flags & SHCNRF_NewDelivery) {
|
|
if(!shared_data) {
|
|
struct new_delivery_notification *notification;
|
|
UINT size1 = ILGetSize(Pidls[0]), size2 = ILGetSize(Pidls[1]);
|
|
UINT offset = (size1+sizeof(int)-1)/sizeof(int)*sizeof(int);
|
|
|
|
notification = SHAlloc(sizeof(struct new_delivery_notification)+offset+size2);
|
|
if(!notification) {
|
|
ERR("out of memory\n");
|
|
} else {
|
|
notification->event = wEventId;
|
|
notification->pidl1_size = size1;
|
|
notification->pidl2_size = size2;
|
|
if(size1)
|
|
memcpy(notification->data, Pidls[0], size1);
|
|
if(size2)
|
|
memcpy(notification->data+offset, Pidls[1], size2);
|
|
|
|
shared_data = SHAllocShared(notification,
|
|
sizeof(struct new_delivery_notification)+size1+size2,
|
|
GetCurrentProcessId());
|
|
SHFree(notification);
|
|
}
|
|
}
|
|
|
|
if(shared_data)
|
|
SendMessageA(cur->hwnd, cur->msg, (WPARAM)shared_data, GetCurrentProcessId());
|
|
else
|
|
ERR("out of memory\n");
|
|
} else {
|
|
SendMessageA(cur->hwnd, cur->msg, (WPARAM)Pidls, wEventId);
|
|
}
|
|
|
|
list_remove(&cur->entry);
|
|
SHFree(cur);
|
|
}
|
|
SHFreeShared(shared_data, GetCurrentProcessId());
|
|
SHFree(Pidls[0]);
|
|
SHFree(Pidls[1]);
|
|
|
|
#ifndef __REACTOS__
|
|
if (wEventId & SHCNE_ASSOCCHANGED)
|
|
{
|
|
static const WCHAR args[] = {' ','-','a',0 };
|
|
TRACE("refreshing file type associations\n");
|
|
run_winemenubuilder( args );
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*************************************************************************
|
|
* NTSHChangeNotifyRegister [SHELL32.640]
|
|
* NOTES
|
|
* Idlist is an array of structures and Count specifies how many items in the array.
|
|
* count should always be one when calling SHChangeNotifyRegister, or
|
|
* SHChangeNotifyDeregister will not work properly.
|
|
*/
|
|
EXTERN_C ULONG WINAPI NTSHChangeNotifyRegister(
|
|
HWND hwnd,
|
|
int fSources,
|
|
LONG fEvents,
|
|
UINT msg,
|
|
int count,
|
|
SHChangeNotifyEntry *idlist)
|
|
{
|
|
return SHChangeNotifyRegister(hwnd, fSources | SHCNRF_NewDelivery,
|
|
fEvents, msg, count, idlist);
|
|
}
|
|
|
|
/*************************************************************************
|
|
* SHChangeNotification_Lock [SHELL32.644]
|
|
*/
|
|
HANDLE WINAPI SHChangeNotification_Lock(
|
|
HANDLE hChange,
|
|
DWORD dwProcessId,
|
|
LPITEMIDLIST **lppidls,
|
|
LPLONG lpwEventId)
|
|
{
|
|
struct new_delivery_notification *ndn;
|
|
UINT offset;
|
|
|
|
TRACE("%p %08x %p %p\n", hChange, dwProcessId, lppidls, lpwEventId);
|
|
|
|
ndn = SHLockShared(hChange, dwProcessId);
|
|
if(!ndn) {
|
|
WARN("SHLockShared failed\n");
|
|
return NULL;
|
|
}
|
|
|
|
if(lppidls) {
|
|
offset = (ndn->pidl1_size+sizeof(int)-1)/sizeof(int)*sizeof(int);
|
|
ndn->pidls[0] = ndn->pidl1_size ? (LPITEMIDLIST)ndn->data : NULL;
|
|
ndn->pidls[1] = ndn->pidl2_size ? (LPITEMIDLIST)(ndn->data+offset) : NULL;
|
|
*lppidls = ndn->pidls;
|
|
}
|
|
|
|
if(lpwEventId)
|
|
*lpwEventId = ndn->event;
|
|
|
|
return ndn;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* SHChangeNotification_Unlock [SHELL32.645]
|
|
*/
|
|
BOOL WINAPI SHChangeNotification_Unlock ( HANDLE hLock)
|
|
{
|
|
TRACE("%p\n", hLock);
|
|
return SHUnlockShared(hLock);
|
|
}
|
|
|
|
/*************************************************************************
|
|
* NTSHChangeNotifyDeregister [SHELL32.641]
|
|
*/
|
|
DWORD WINAPI NTSHChangeNotifyDeregister(ULONG x1)
|
|
{
|
|
FIXME("(0x%08x):semi stub.\n",x1);
|
|
|
|
return SHChangeNotifyDeregister( x1 );
|
|
}
|
|
|
|
#ifdef __REACTOS__
|
|
|
|
static
|
|
void
|
|
CALLBACK
|
|
_AddDirectoryProc(ULONG_PTR arg)
|
|
{
|
|
LPNOTIFYREGISTER item = (LPNOTIFYREGISTER)arg;
|
|
_BeginRead(item);
|
|
}
|
|
|
|
BOOL _OpenDirectory(LPNOTIFYREGISTER item)
|
|
{
|
|
STRRET strFile;
|
|
IShellFolder *psf;
|
|
HRESULT hr;
|
|
LPCITEMIDLIST child;
|
|
ULONG ulAttrs;
|
|
|
|
// Makes function idempotent
|
|
if (item->hDirectory && !(item->hDirectory == INVALID_HANDLE_VALUE))
|
|
return TRUE;
|
|
|
|
hr = SHBindToParent(item->pidl, &IID_IShellFolder, (LPVOID*)&psf, &child);
|
|
if (FAILED_UNEXPECTEDLY(hr))
|
|
return hr;
|
|
|
|
ulAttrs = SFGAO_FILESYSTEM | SFGAO_FOLDER;
|
|
hr = IShellFolder_GetAttributesOf(psf, 1, (LPCITEMIDLIST*)&child, &ulAttrs);
|
|
if (SUCCEEDED(hr))
|
|
hr = IShellFolder_GetDisplayNameOf(psf, child, SHGDN_FORPARSING, &strFile);
|
|
|
|
IShellFolder_Release(psf);
|
|
if (FAILED_UNEXPECTEDLY(hr))
|
|
return FALSE;
|
|
|
|
hr = StrRetToBufW(&strFile, NULL, item->wstrDirectory, _countof(item->wstrDirectory));
|
|
if (FAILED_UNEXPECTEDLY(hr))
|
|
return FALSE;
|
|
|
|
if ((ulAttrs & (SFGAO_FILESYSTEM | SFGAO_FOLDER)) != (SFGAO_FILESYSTEM | SFGAO_FOLDER))
|
|
{
|
|
TRACE("_OpenDirectory ignoring %s\n", debugstr_w(item->wstrDirectory));
|
|
item->hDirectory = INVALID_HANDLE_VALUE;
|
|
return FALSE;
|
|
}
|
|
|
|
TRACE("_OpenDirectory %s\n", debugstr_w(item->wstrDirectory));
|
|
|
|
item->hDirectory = CreateFileW(item->wstrDirectory, // pointer to the file name
|
|
GENERIC_READ | FILE_LIST_DIRECTORY, // access (read/write) mode
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, // share mode
|
|
NULL, // security descriptor
|
|
OPEN_EXISTING, // how to create
|
|
FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OVERLAPPED, // file attributes
|
|
NULL); // file with attributes to copy
|
|
|
|
if (item->hDirectory == INVALID_HANDLE_VALUE)
|
|
{
|
|
ERR("_OpenDirectory failed for %s\n", debugstr_w(item->wstrDirectory));
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static void CALLBACK _RequestTermination(ULONG_PTR arg)
|
|
{
|
|
LPNOTIFYREGISTER item = (LPNOTIFYREGISTER) arg;
|
|
TRACE("_RequestTermination %p %p \n", item, item->hDirectory);
|
|
if (!item->hDirectory || item->hDirectory == INVALID_HANDLE_VALUE) return;
|
|
|
|
CancelIo(item->hDirectory);
|
|
CloseHandle(item->hDirectory);
|
|
item->hDirectory = NULL;
|
|
}
|
|
|
|
static
|
|
void
|
|
CALLBACK
|
|
_NotificationCompletion(DWORD dwErrorCode, // completion code
|
|
DWORD dwNumberOfBytesTransfered, // number of bytes transferred
|
|
LPOVERLAPPED lpOverlapped) // I/O information buffer
|
|
{
|
|
/* MSDN: The hEvent member of the OVERLAPPED structure is not used by the
|
|
system, so you can use it yourself. We do just this, storing a pointer
|
|
to the working struct in the overlapped structure. */
|
|
LPNOTIFYREGISTER item = (LPNOTIFYREGISTER) lpOverlapped->hEvent;
|
|
TRACE("_NotificationCompletion\n");
|
|
|
|
#if 0
|
|
if (dwErrorCode == ERROR_OPERATION_ABORTED)
|
|
{
|
|
/* Command was induced by CancelIo in the shutdown procedure. */
|
|
TRACE("_NotificationCompletion ended.\n");
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
#ifdef __REACTOS__
|
|
/* If the FSD doesn't support directory change notifications, there's no
|
|
* no need to retry and requeue notification
|
|
*/
|
|
if (dwErrorCode == ERROR_INVALID_FUNCTION)
|
|
{
|
|
WARN("Directory watching not supported\n");
|
|
return;
|
|
}
|
|
|
|
/* Also, if the notify operation was canceled (like, user moved to another
|
|
* directory), then, don't requeue notification
|
|
*/
|
|
if (dwErrorCode == ERROR_OPERATION_ABORTED)
|
|
{
|
|
TRACE("Notification aborted\n");
|
|
return;
|
|
}
|
|
|
|
#endif
|
|
|
|
/* This likely means overflow, so force whole directory refresh. */
|
|
if (!dwNumberOfBytesTransfered)
|
|
{
|
|
ERR("_NotificationCompletion overflow\n");
|
|
|
|
ZeroMemory(item->buffer, BUFFER_SIZE);
|
|
_BeginRead(item);
|
|
|
|
SHChangeNotify(SHCNE_UPDATEITEM | SHCNE_INTERRUPT,
|
|
SHCNF_IDLIST,
|
|
item->pidl,
|
|
NULL);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Get the new read issued as fast as possible (before we do the
|
|
* processing and message posting). All of the file notification
|
|
* occur on one thread so the buffers should not collide with one another.
|
|
* The extra zero mems are because the FNI size isn't written correctly.
|
|
*/
|
|
|
|
ZeroMemory(item->backBuffer, BUFFER_SIZE);
|
|
memcpy(item->backBuffer, item->buffer, dwNumberOfBytesTransfered);
|
|
ZeroMemory(item->buffer, BUFFER_SIZE);
|
|
|
|
_BeginRead(item);
|
|
|
|
_ProcessNotification(item);
|
|
}
|
|
|
|
static VOID _BeginRead(LPNOTIFYREGISTER item )
|
|
{
|
|
TRACE("_BeginRead %p \n", item->hDirectory);
|
|
|
|
/* This call needs to be reissued after every APC. */
|
|
if (!ReadDirectoryChangesW(item->hDirectory, // handle to directory
|
|
item->buffer, // read results buffer
|
|
BUFFER_SIZE, // length of buffer
|
|
FALSE, // monitoring option (recursion)
|
|
FILE_NOTIFY_CHANGE_DIR_NAME | FILE_NOTIFY_CHANGE_FILE_NAME, // filter conditions
|
|
NULL, // bytes returned
|
|
&item->overlapped, // overlapped buffer
|
|
_NotificationCompletion)) // completion routine
|
|
ERR("ReadDirectoryChangesW failed. (%p, %p, %p, %p, %p) Code: %u \n",
|
|
item,
|
|
item->hDirectory,
|
|
item->buffer,
|
|
&item->overlapped,
|
|
_NotificationCompletion,
|
|
GetLastError());
|
|
}
|
|
|
|
DWORD _MapAction(DWORD dwAction, BOOL isDir)
|
|
{
|
|
switch (dwAction)
|
|
{
|
|
case FILE_ACTION_ADDED : return isDir ? SHCNE_MKDIR : SHCNE_CREATE;
|
|
case FILE_ACTION_REMOVED : return isDir ? SHCNE_RMDIR : SHCNE_DELETE;
|
|
case FILE_ACTION_MODIFIED : return isDir ? SHCNE_UPDATEDIR : SHCNE_UPDATEITEM;
|
|
case FILE_ACTION_RENAMED_OLD_NAME : return isDir ? SHCNE_UPDATEDIR : SHCNE_UPDATEITEM;
|
|
case FILE_ACTION_RENAMED_NEW_NAME : return isDir ? SHCNE_UPDATEDIR : SHCNE_UPDATEITEM;
|
|
default: return SHCNE_UPDATEITEM;
|
|
}
|
|
}
|
|
|
|
VOID _ProcessNotification(LPNOTIFYREGISTER item)
|
|
{
|
|
BYTE* pBase = item->backBuffer;
|
|
TRACE("_ProcessNotification\n");
|
|
|
|
for (;;)
|
|
{
|
|
FILE_NOTIFY_INFORMATION* fni = (FILE_NOTIFY_INFORMATION*)pBase;
|
|
LPWSTR wszFilename;
|
|
INT len = 0;
|
|
WCHAR wstrFilename[MAX_PATH];
|
|
WCHAR tmp[MAX_PATH];
|
|
StringCchCopy(tmp, fni->FileNameLength, fni->FileName);
|
|
|
|
PathCombine(wstrFilename, item->wstrDirectory, tmp);
|
|
|
|
/* If it could be a short filename, expand it. */
|
|
wszFilename = PathFindFileNameW(wstrFilename);
|
|
|
|
len = lstrlenW(wszFilename);
|
|
/* The maximum length of an 8.3 filename is twelve, including the dot. */
|
|
if (len <= 12 && wcschr(wszFilename, L'~'))
|
|
{
|
|
/* Convert to the long filename form. Unfortunately, this
|
|
does not work for deletions, so it's an imperfect fix. */
|
|
wchar_t wbuf[MAX_PATH];
|
|
if (GetLongPathName(wstrFilename, wbuf, _countof (wbuf)) > 0)
|
|
StringCchCopyW(wstrFilename, MAX_PATH, wbuf);
|
|
}
|
|
|
|
/* On deletion of a folder PathIsDirectory will return false even if
|
|
it *was* a directory, so, again, imperfect. */
|
|
SHChangeNotify(_MapAction(fni->Action, PathIsDirectory(wstrFilename)) | SHCNE_INTERRUPT,
|
|
SHCNF_PATHW,
|
|
wstrFilename,
|
|
NULL);
|
|
|
|
if (!fni->NextEntryOffset)
|
|
break;
|
|
pBase += fni->NextEntryOffset;
|
|
}
|
|
}
|
|
|
|
static void CALLBACK _RequestAllTermination(ULONG_PTR arg)
|
|
{
|
|
m_bTerminate = TRUE;
|
|
}
|
|
|
|
static unsigned int WINAPI _RunAsyncThreadProc(LPVOID arg)
|
|
{
|
|
m_bTerminate = FALSE;
|
|
while (!m_bTerminate)
|
|
{
|
|
SleepEx(INFINITE, TRUE);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#endif /* __REACTOS__ */
|