shlfileop.c

这是一个开放源代码的与WINNT/WIN2K/WIN2003兼容的操作系统

/*
 * SHFileOperation
 *
 * Copyright 2000 Juergen Schmied
 * Copyright 2002 Andriy Palamarchuk
 * Copyright 2004 Dietrich Teickner (from Odin)
 * Copyright 2004 Rolf Kalbermatter
 *
 * 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
 */

#include "config.h"
#include "wine/port.h"

#include <stdarg.h>
#include <string.h>
#include <ctype.h>

#include "windef.h"
#include "winbase.h"
#include "winreg.h"
#include "shellapi.h"
#include "wingdi.h"
#include "winuser.h"
#include "shlobj.h"
#include "shresdef.h"
#define NO_SHLWAPI_STREAM
#include "shlwapi.h"
#include "shell32_main.h"
#include "undocshell.h"
#include "wine/unicode.h"
#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(shell);

#define IsAttrib(x, y)  ((INVALID_FILE_ATTRIBUTES != (x)) && ((x) & (y)))
#define IsAttribFile(x) (!((x) & FILE_ATTRIBUTE_DIRECTORY))
#define IsAttribDir(x)  IsAttrib(x, FILE_ATTRIBUTE_DIRECTORY)
#define IsDotDir(x)     ((x[0] == '.') && ((x[1] == 0) || ((x[1] == '.') && (x[2] == 0))))

#define FO_MASK         0xF

static const WCHAR wWildcardFile[] = {'*',0};
static const WCHAR wWildcardChars[] = {'*','?',0};
static const WCHAR wBackslash[] = {'\\',0};

static BOOL SHELL_DeleteDirectoryW(LPCWSTR path, BOOL bShowUI);
static DWORD SHNotifyCreateDirectoryA(LPCSTR path, LPSECURITY_ATTRIBUTES sec);
static DWORD SHNotifyCreateDirectoryW(LPCWSTR path, LPSECURITY_ATTRIBUTES sec);
static DWORD SHNotifyRemoveDirectoryA(LPCSTR path);
static DWORD SHNotifyRemoveDirectoryW(LPCWSTR path);
static DWORD SHNotifyDeleteFileA(LPCSTR path);
static DWORD SHNotifyDeleteFileW(LPCWSTR path);
static DWORD SHNotifyMoveFileW(LPCWSTR src, LPCWSTR dest);
static DWORD SHNotifyCopyFileW(LPCWSTR src, LPCWSTR dest, BOOL bFailIfExists);
static DWORD SHFindAttrW(LPCWSTR pName, BOOL fileOnly);

typedef struct
{
	UINT caption_resource_id, text_resource_id;
} SHELL_ConfirmIDstruc;

static BOOL SHELL_ConfirmIDs(int nKindOfDialog, SHELL_ConfirmIDstruc *ids)
{
	switch (nKindOfDialog) {
	  case ASK_DELETE_FILE:
	    ids->caption_resource_id  = IDS_DELETEITEM_CAPTION;
	    ids->text_resource_id  = IDS_DELETEITEM_TEXT;
	    return TRUE;
	  case ASK_DELETE_FOLDER:
	    ids->caption_resource_id  = IDS_DELETEFOLDER_CAPTION;
	    ids->text_resource_id  = IDS_DELETEITEM_TEXT;
	    return TRUE;
	  case ASK_DELETE_MULTIPLE_ITEM:
	    ids->caption_resource_id  = IDS_DELETEITEM_CAPTION;
	    ids->text_resource_id  = IDS_DELETEMULTIPLE_TEXT;
	    return TRUE;
	  case ASK_OVERWRITE_FILE:
	    ids->caption_resource_id  = IDS_OVERWRITEFILE_CAPTION;
	    ids->text_resource_id  = IDS_OVERWRITEFILE_TEXT;
	    return TRUE;
	  default:
	    FIXME(" Unhandled nKindOfDialog %d stub\n", nKindOfDialog);
	}
	return FALSE;
}

BOOL SHELL_ConfirmDialog(int nKindOfDialog, LPCSTR szDir)
{
	CHAR szCaption[255], szText[255], szBuffer[MAX_PATH + 256];
	SHELL_ConfirmIDstruc ids;

	if (!SHELL_ConfirmIDs(nKindOfDialog, &ids))
	  return FALSE;

	LoadStringA(shell32_hInstance, ids.caption_resource_id, szCaption, sizeof(szCaption));
	LoadStringA(shell32_hInstance, ids.text_resource_id, szText, sizeof(szText));

	FormatMessageA(FORMAT_MESSAGE_FROM_STRING|FORMAT_MESSAGE_ARGUMENT_ARRAY,
	               szText, 0, 0, szBuffer, sizeof(szBuffer), (va_list*)&szDir);

	return (IDOK == MessageBoxA(GetActiveWindow(), szBuffer, szCaption, MB_OKCANCEL | MB_ICONEXCLAMATION));
}

BOOL SHELL_ConfirmDialogW(int nKindOfDialog, LPCWSTR szDir)
{
	WCHAR szCaption[255], szText[255], szBuffer[MAX_PATH + 256];
	SHELL_ConfirmIDstruc ids;

	if (!SHELL_ConfirmIDs(nKindOfDialog, &ids))
	  return FALSE;

	LoadStringW(shell32_hInstance, ids.caption_resource_id, szCaption, sizeof(szCaption));
	LoadStringW(shell32_hInstance, ids.text_resource_id, szText, sizeof(szText));

	FormatMessageW(FORMAT_MESSAGE_FROM_STRING|FORMAT_MESSAGE_ARGUMENT_ARRAY,
	               szText, 0, 0, szBuffer, sizeof(szBuffer), (va_list*)&szDir);

	return (IDOK == MessageBoxW(GetActiveWindow(), szBuffer, szCaption, MB_OKCANCEL | MB_ICONEXCLAMATION));
}

static DWORD SHELL32_AnsiToUnicodeBuf(LPCSTR aPath, LPWSTR *wPath, DWORD minChars)
{
	DWORD len = MultiByteToWideChar(CP_ACP, 0, aPath, -1, NULL, 0);

	if (len < minChars)
	  len = minChars;

	*wPath = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
	if (*wPath)
	{
	  MultiByteToWideChar(CP_ACP, 0, aPath, -1, *wPath, len);
	  return NO_ERROR;
	}
	return E_OUTOFMEMORY;
}

static void SHELL32_FreeUnicodeBuf(LPWSTR wPath)
{
	HeapFree(GetProcessHeap(), 0, wPath);
}

/**************************************************************************
 * SHELL_DeleteDirectory()  [internal]
 *
 * Asks for confirmation when bShowUI is true and deletes the directory and
 * all its subdirectories and files if necessary.
 */
BOOL SHELL_DeleteDirectoryA(LPCSTR pszDir, BOOL bShowUI)
{
	LPWSTR wPath;
	BOOL ret = FALSE;

	if (!SHELL32_AnsiToUnicodeBuf(pszDir, &wPath, 0))
	{
	  ret = SHELL_DeleteDirectoryW(wPath, bShowUI);
	  SHELL32_FreeUnicodeBuf(wPath);
	}
	return ret;
}

static BOOL SHELL_DeleteDirectoryW(LPCWSTR pszDir, BOOL bShowUI)
{
	BOOL    ret = TRUE;
	HANDLE  hFind;
	WIN32_FIND_DATAW wfd;
	WCHAR   szTemp[MAX_PATH];

	/* Make sure the directory exists before eventually prompting the user */
	PathCombineW(szTemp, pszDir, wWildcardFile);
	hFind = FindFirstFileW(szTemp, &wfd);
	if (hFind == INVALID_HANDLE_VALUE)
	  return FALSE;

	if (!bShowUI || (ret = SHELL_ConfirmDialogW(ASK_DELETE_FOLDER, pszDir)))
	{
	  do
	  {
	    LPWSTR lp = wfd.cAlternateFileName;
	    if (!lp[0])
	      lp = wfd.cFileName;
	    if (IsDotDir(lp))
	      continue;
	    PathCombineW(szTemp, pszDir, lp);
	    if (FILE_ATTRIBUTE_DIRECTORY & wfd.dwFileAttributes)
	      ret = SHELL_DeleteDirectoryW(szTemp, FALSE);
	    else
	      ret = (SHNotifyDeleteFileW(szTemp) == ERROR_SUCCESS);
	  } while (ret && FindNextFileW(hFind, &wfd));
	}
	FindClose(hFind);
	if (ret)
	  ret = (SHNotifyRemoveDirectoryW(pszDir) == ERROR_SUCCESS);
	return ret;
}

/**************************************************************************
 *  SHELL_DeleteFileA()      [internal]
 */
BOOL SHELL_DeleteFileA(LPCSTR pszFile, BOOL bShowUI)
{
	if (bShowUI && !SHELL_ConfirmDialog(ASK_DELETE_FILE, pszFile))
	  return FALSE;

	return (SHNotifyDeleteFileA(pszFile) == ERROR_SUCCESS);
}

BOOL SHELL_DeleteFileW(LPCWSTR pszFile, BOOL bShowUI)
{
	if (bShowUI && !SHELL_ConfirmDialogW(ASK_DELETE_FILE, pszFile))
	  return FALSE;

	return (SHNotifyDeleteFileW(pszFile) == ERROR_SUCCESS);
}

/**************************************************************************
 * Win32CreateDirectory      [SHELL32.93]
 *
 * Creates a directory. Also triggers a change notify if one exists.
 *
 * PARAMS
 *  path       [I]   path to directory to create
 *
 * RETURNS
 *  TRUE if successful, FALSE otherwise
 *
 * NOTES
 *  Verified on Win98 / IE 5 (SHELL32 4.72, March 1999 build) to be ANSI.
 *  This is Unicode on NT/2000
 */
static DWORD SHNotifyCreateDirectoryA(LPCSTR path, LPSECURITY_ATTRIBUTES sec)
{
	LPWSTR wPath;
	DWORD retCode;

	TRACE("(%s, %p)\n", debugstr_a(path), sec);

	retCode = SHELL32_AnsiToUnicodeBuf(path, &wPath, 0);
	if (!retCode)
	{
	  retCode = SHNotifyCreateDirectoryW(wPath, sec);
	  SHELL32_FreeUnicodeBuf(wPath);
	}
	return retCode;
}

/**********************************************************************/

static DWORD SHNotifyCreateDirectoryW(LPCWSTR path, LPSECURITY_ATTRIBUTES sec)
{
	TRACE("(%s, %p)\n", debugstr_w(path), sec);

	if (CreateDirectoryW(path, sec))
	{
	  SHChangeNotify(SHCNE_MKDIR, SHCNF_PATHW, path, NULL);
	  return ERROR_SUCCESS;
	}
	return GetLastError();
}

/**********************************************************************/

BOOL WINAPI Win32CreateDirectoryAW(LPCVOID path, LPSECURITY_ATTRIBUTES sec)
{
	if (SHELL_OsIsUnicode())
	  return (SHNotifyCreateDirectoryW(path, sec) == ERROR_SUCCESS);
	return (SHNotifyCreateDirectoryA(path, sec) == ERROR_SUCCESS);
}

/************************************************************************
 * Win32RemoveDirectory      [SHELL32.94]
 *
 * Deletes a directory. Also triggers a change notify if one exists.
 *
 * PARAMS
 *  path       [I]   path to directory to delete
 *
 * RETURNS
 *  TRUE if successful, FALSE otherwise
 *
 * NOTES
 *  Verified on Win98 / IE 5 (SHELL32 4.72, March 1999 build) to be ANSI.
 *  This is Unicode on NT/2000
 */
static DWORD SHNotifyRemoveDirectoryA(LPCSTR path)
{
	LPWSTR wPath;
	DWORD retCode;

	TRACE("(%s)\n", debugstr_a(path));

	retCode = SHELL32_AnsiToUnicodeBuf(path, &wPath, 0);
	if (!retCode)
	{
	  retCode = SHNotifyRemoveDirectoryW(wPath);
	  SHELL32_FreeUnicodeBuf(wPath);
	}
	return retCode;
}

/***********************************************************************/

static DWORD SHNotifyRemoveDirectoryW(LPCWSTR path)
{
	BOOL ret;
	TRACE("(%s)\n", debugstr_w(path));

	ret = RemoveDirectoryW(path);
	if (!ret)
	{
	  /* Directory may be write protected */
	  DWORD dwAttr = GetFileAttributesW(path);
	  if (IsAttrib(dwAttr, FILE_ATTRIBUTE_READONLY))
	    if (SetFileAttributesW(path, dwAttr & ~FILE_ATTRIBUTE_READONLY))
	      ret = RemoveDirectoryW(path);
	}
	if (ret)
	{
	  SHChangeNotify(SHCNE_RMDIR, SHCNF_PATHW, path, NULL);
	  return ERROR_SUCCESS;
	}
	return GetLastError();
}

/***********************************************************************/

BOOL WINAPI Win32RemoveDirectoryAW(LPCVOID path)
{
	if (SHELL_OsIsUnicode())
	  return (SHNotifyRemoveDirectoryW(path) == ERROR_SUCCESS);
	return (SHNotifyRemoveDirectoryA(path) == ERROR_SUCCESS);
}

/************************************************************************
 * Win32DeleteFile           [SHELL32.164]
 *
 * Deletes a file. Also triggers a change notify if one exists.
 *
 * PARAMS
 *  path       [I]   path to file to delete
 *
 * RETURNS
 *  TRUE if successful, FALSE otherwise
 *
 * NOTES
 *  Verified on Win98 / IE 5 (SHELL32 4.72, March 1999 build) to be ANSI.
 *  This is Unicode on NT/2000
 */
static DWORD SHNotifyDeleteFileA(LPCSTR path)
{
	LPWSTR wPath;
	DWORD retCode;

	TRACE("(%s)\n", debugstr_a(path));

	retCode = SHELL32_AnsiToUnicodeBuf(path, &wPath, 0);
	if (!retCode)
	{
	  retCode = SHNotifyDeleteFileW(wPath);
	  SHELL32_FreeUnicodeBuf(wPath);
	}
	return retCode;
}

/***********************************************************************/

static DWORD SHNotifyDeleteFileW(LPCWSTR path)
{
	BOOL ret;

	TRACE("(%s)\n", debugstr_w(path));

	ret = DeleteFileW(path);
	if (!ret)
	{
	  /* File may be write protected or a system file */
	  DWORD dwAttr = GetFileAttributesW(path);
	  if (IsAttrib(dwAttr, FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_SYSTEM))
	    if (SetFileAttributesW(path, dwAttr & ~(FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_SYSTEM)))