1// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CHROME_COMMON_WIN_SAFE_UTIL_H__
6#define CHROME_COMMON_WIN_SAFE_UTIL_H__
7#pragma once
8
9#include <string>
10#include <windows.h>
11
12class FilePath;
13
14namespace win_util {
15
16// Open or run a downloaded file via the Windows shell, possibly showing first
17// a consent dialog if the the file is deemed dangerous. This function is an
18// enhancement over the OpenItemViaShell() function of win_util.h.
19//
20// The user consent dialog will be shown or not according to the windows
21// execution policy defined in the registry which can be overridden per user.
22// The mechanics of the policy are explained in the Microsoft Knowledge base
23// number 883260: http://support.microsoft.com/kb/883260
24//
25// The 'hwnd' is the handle to the parent window. In case a dialog is displayed
26// the parent window will be disabled since the dialog is meant to be modal.
27// The 'window_title' is the text displayed on the title bar of the dialog. If
28// you pass an empty string the dialog will have a generic 'windows security'
29// name on the title bar.
30//
31// You must provide a valid 'full_path' to the file to be opened and a well
32// formed url in 'source_url'. The url should identify the source of the file
33// but does not have to be network-reachable. If the url is malformed a
34// dialog will be shown telling the user that the file will be blocked.
35//
36// In the event that there is no default application registered for the file
37// specified by 'full_path' it ask the user, via the Windows "Open With"
38// dialog.
39// Returns 'true' on successful open, 'false' otherwise.
40bool SaferOpenItemViaShell(HWND hwnd, const std::wstring& window_title,
41                           const FilePath& full_path,
42                           const std::wstring& source_url);
43
44// Sets the Zone Identifier on the file to "Internet" (3). Returns true if the
45// function succeeds, false otherwise. A failure is expected on system where
46// the Zone Identifier is not supported, like a machine with a FAT32 filesystem.
47// It should not be considered fatal.
48bool SetInternetZoneIdentifier(const FilePath& full_path);
49
50}  // namespace win_util
51
52#endif  // CHROME_COMMON_WIN_SAFE_UTIL_H_
53