1// Copyright (c) 2012 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#include "chrome/common/chrome_paths_internal.h"
6
7#include <windows.h>
8#include <knownfolders.h>
9#include <shellapi.h>
10#include <shlobj.h>
11#include <shobjidl.h>
12
13#include "base/files/file_path.h"
14#include "base/path_service.h"
15#include "base/win/metro.h"
16#include "base/win/scoped_co_mem.h"
17#include "chrome/common/chrome_constants.h"
18#include "chrome/common/chrome_switches.h"
19#include "chrome/installer/util/browser_distribution.h"
20#include "components/nacl/common/nacl_switches.h"
21
22namespace chrome {
23
24namespace {
25
26// Generic function to call SHGetFolderPath().
27bool GetUserDirectory(int csidl_folder, base::FilePath* result) {
28  // We need to go compute the value. It would be nice to support paths
29  // with names longer than MAX_PATH, but the system functions don't seem
30  // to be designed for it either, with the exception of GetTempPath
31  // (but other things will surely break if the temp path is too long,
32  // so we don't bother handling it.
33  wchar_t path_buf[MAX_PATH];
34  path_buf[0] = 0;
35  if (FAILED(SHGetFolderPath(NULL, csidl_folder, NULL,
36                             SHGFP_TYPE_CURRENT, path_buf))) {
37    return false;
38  }
39  *result = base::FilePath(path_buf);
40  return true;
41}
42
43}  // namespace
44
45bool GetDefaultUserDataDirectory(base::FilePath* result) {
46  if (!PathService::Get(base::DIR_LOCAL_APP_DATA, result))
47    return false;
48  BrowserDistribution* dist = BrowserDistribution::GetDistribution();
49  *result = result->Append(dist->GetInstallSubDir());
50  *result = result->Append(chrome::kUserDataDirname);
51  return true;
52}
53
54void GetUserCacheDirectory(const base::FilePath& profile_dir,
55                           base::FilePath* result) {
56  // This function does more complicated things on Mac/Linux.
57  *result = profile_dir;
58}
59
60bool GetUserDocumentsDirectory(base::FilePath* result) {
61  return GetUserDirectory(CSIDL_MYDOCUMENTS, result);
62}
63
64// Return a default path for downloads that is safe.
65// We just use 'Downloads' under DIR_USER_DOCUMENTS. Localizing
66// 'downloads' is not a good idea because Chrome's UI language
67// can be changed.
68bool GetUserDownloadsDirectorySafe(base::FilePath* result) {
69  if (!GetUserDocumentsDirectory(result))
70    return false;
71
72  *result = result->Append(L"Downloads");
73  return true;
74}
75
76// On Vista and higher, use the downloads known folder. Since it can be
77// relocated to point to a "dangerous" folder, callers should validate that the
78// returned path is not dangerous before using it.
79bool GetUserDownloadsDirectory(base::FilePath* result) {
80  typedef HRESULT (WINAPI *GetKnownFolderPath)(
81      REFKNOWNFOLDERID, DWORD, HANDLE, PWSTR*);
82  GetKnownFolderPath f = reinterpret_cast<GetKnownFolderPath>(
83      GetProcAddress(GetModuleHandle(L"shell32.dll"), "SHGetKnownFolderPath"));
84  base::win::ScopedCoMem<wchar_t> path_buf;
85  if (f && SUCCEEDED(f(FOLDERID_Downloads, 0, NULL, &path_buf))) {
86    *result = base::FilePath(std::wstring(path_buf));
87    return true;
88  }
89  return GetUserDownloadsDirectorySafe(result);
90}
91
92bool GetUserMusicDirectory(base::FilePath* result) {
93  return GetUserDirectory(CSIDL_MYMUSIC, result);
94}
95
96bool GetUserPicturesDirectory(base::FilePath* result) {
97  return GetUserDirectory(CSIDL_MYPICTURES, result);
98}
99
100bool GetUserVideosDirectory(base::FilePath* result) {
101  return GetUserDirectory(CSIDL_MYVIDEO, result);
102}
103
104bool ProcessNeedsProfileDir(const std::string& process_type) {
105  // On windows we don't want subprocesses other than the browser process and
106  // service processes to be able to use the profile directory because if it
107  // lies on a network share the sandbox will prevent us from accessing it.
108
109  if (process_type.empty() || process_type == switches::kServiceProcess)
110    return true;
111
112#if !defined(DISABLE_NACL)
113  if (process_type == switches::kNaClBrokerProcess ||
114      process_type == switches::kNaClLoaderProcess) {
115    return true;
116  }
117#endif
118
119  return false;
120}
121
122}  // namespace chrome
123