base/base_paths_win.cc

   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 <windows.h>
   6 #include <shlobj.h>
   7
   8 #include "base/base_paths.h"
   9 #include "base/environment.h"
  10 #include "base/files/file_path.h"
  11 #include "base/path_service.h"
  12 #include "base/strings/utf_string_conversions.h"
  13 #include "base/win/scoped_co_mem.h"
  14 #include "base/win/windows_version.h"
  15
  16 // http://blogs.msdn.com/oldnewthing/archive/2004/10/25/247180.aspx
  17 extern "C" IMAGE_DOS_HEADER __ImageBase;
  18
  19 using base::FilePath;
  20
  21 namespace base {
  22
  23 bool PathProviderWin(int key, FilePath* result) {
  24   // We need to go compute the value. It would be nice to support paths with
  25   // names longer than MAX_PATH, but the system functions don't seem to be
  26   // designed for it either, with the exception of GetTempPath (but other
  27   // things will surely break if the temp path is too long, so we don't bother
  28   // handling it.
  29   wchar_t system_buffer[MAX_PATH];
  30   system_buffer[0] = 0;
  31
  32   FilePath cur;
  33   switch (key) {
  34     case base::FILE_EXE:
  35       GetModuleFileName(NULL, system_buffer, MAX_PATH);
  36       cur = FilePath(system_buffer);
  37       break;
  38     case base::FILE_MODULE: {
  39       // the resource containing module is assumed to be the one that
  40       // this code lives in, whether that's a dll or exe
  41       HMODULE this_module = reinterpret_cast<HMODULE>(&__ImageBase);
  42       GetModuleFileName(this_module, system_buffer, MAX_PATH);
  43       cur = FilePath(system_buffer);
  44       break;
  45     }
  46     case base::DIR_WINDOWS:
  47       GetWindowsDirectory(system_buffer, MAX_PATH);
  48       cur = FilePath(system_buffer);
  49       break;
  50     case base::DIR_SYSTEM:
  51       GetSystemDirectory(system_buffer, MAX_PATH);
  52       cur = FilePath(system_buffer);
  53       break;
  54     case base::DIR_PROGRAM_FILESX86:
  55       if (base::win::OSInfo::GetInstance()->architecture() !=
  56           base::win::OSInfo::X86_ARCHITECTURE) {
  57         if (FAILED(SHGetFolderPath(NULL, CSIDL_PROGRAM_FILESX86, NULL,
  58                                    SHGFP_TYPE_CURRENT, system_buffer)))
  59           return false;
  60         cur = FilePath(system_buffer);
  61         break;
  62       }
  63       // Fall through to base::DIR_PROGRAM_FILES if we're on an X86 machine.
  64     case base::DIR_PROGRAM_FILES:
  65       if (FAILED(SHGetFolderPath(NULL, CSIDL_PROGRAM_FILES, NULL,
  66                                  SHGFP_TYPE_CURRENT, system_buffer)))
  67         return false;
  68       cur = FilePath(system_buffer);
  69       break;
  70     case base::DIR_PROGRAM_FILES6432:
  71 #if !defined(_WIN64)
  72       if (base::win::OSInfo::GetInstance()->wow64_status() ==
  73           base::win::OSInfo::WOW64_ENABLED) {
  74         scoped_ptr<base::Environment> env(base::Environment::Create());
  75         std::string programfiles_w6432;
  76         // 32-bit process running in WOW64 sets ProgramW6432 environment
  77         // variable. See
  78         // https://msdn.microsoft.com/library/windows/desktop/aa384274.aspx.
  79         if (!env->GetVar("ProgramW6432", &programfiles_w6432))
  80           return false;
  81         // GetVar returns UTF8 - convert back to Wide.
  82         cur = FilePath(UTF8ToWide(programfiles_w6432));
  83         break;
  84       }
  85 #endif
  86       if (FAILED(SHGetFolderPath(NULL, CSIDL_PROGRAM_FILES, NULL,
  87                                  SHGFP_TYPE_CURRENT, system_buffer)))
  88         return false;
  89       cur = FilePath(system_buffer);
  90       break;
  91     case base::DIR_IE_INTERNET_CACHE:
  92       if (FAILED(SHGetFolderPath(NULL, CSIDL_INTERNET_CACHE, NULL,
  93                                  SHGFP_TYPE_CURRENT, system_buffer)))
  94         return false;
  95       cur = FilePath(system_buffer);
  96       break;
  97     case base::DIR_COMMON_START_MENU:
  98       if (FAILED(SHGetFolderPath(NULL, CSIDL_COMMON_PROGRAMS, NULL,
  99                                  SHGFP_TYPE_CURRENT, system_buffer)))
 100         return false;
 101       cur = FilePath(system_buffer);
 102       break;
 103     case base::DIR_START_MENU:
 104       if (FAILED(SHGetFolderPath(NULL, CSIDL_PROGRAMS, NULL,
 105                                  SHGFP_TYPE_CURRENT, system_buffer)))
 106         return false;
 107       cur = FilePath(system_buffer);
 108       break;
 109     case base::DIR_APP_DATA:
 110       if (FAILED(SHGetFolderPath(NULL, CSIDL_APPDATA, NULL, SHGFP_TYPE_CURRENT,
 111                                  system_buffer)))
 112         return false;
 113       cur = FilePath(system_buffer);
 114       break;
 115     case base::DIR_COMMON_APP_DATA:
 116       if (FAILED(SHGetFolderPath(NULL, CSIDL_COMMON_APPDATA, NULL,
 117                                  SHGFP_TYPE_CURRENT, system_buffer)))
 118         return false;
 119       cur = FilePath(system_buffer);
 120       break;
 121     case base::DIR_LOCAL_APP_DATA:
 122       if (FAILED(SHGetFolderPath(NULL, CSIDL_LOCAL_APPDATA, NULL,
 123                                  SHGFP_TYPE_CURRENT, system_buffer)))
 124         return false;
 125       cur = FilePath(system_buffer);
 126       break;
 127     case base::DIR_SOURCE_ROOT: {
 128       FilePath executableDir;
 129       // On Windows, unit tests execute two levels deep from the source root.
 130       // For example:  chrome/{Debug|Release}/ui_tests.exe
 131       PathService::Get(base::DIR_EXE, &executableDir);
 132       cur = executableDir.DirName().DirName();
 133       break;
 134     }
 135     case base::DIR_APP_SHORTCUTS: {
 136       if (win::GetVersion() < win::VERSION_WIN8)
 137         return false;
 138
 139       base::win::ScopedCoMem<wchar_t> path_buf;
 140       if (FAILED(SHGetKnownFolderPath(FOLDERID_ApplicationShortcuts, 0, NULL,
 141                                       &path_buf)))
 142         return false;
 143
 144       cur = FilePath(string16(path_buf));
 145       break;
 146     }
 147     case base::DIR_USER_DESKTOP:
 148       if (FAILED(SHGetFolderPath(NULL, CSIDL_DESKTOPDIRECTORY, NULL,
 149                                  SHGFP_TYPE_CURRENT, system_buffer))) {
 150         return false;
 151       }
 152       cur = FilePath(system_buffer);
 153       break;
 154     case base::DIR_COMMON_DESKTOP:
 155       if (FAILED(SHGetFolderPath(NULL, CSIDL_COMMON_DESKTOPDIRECTORY, NULL,
 156                                  SHGFP_TYPE_CURRENT, system_buffer))) {
 157         return false;
 158       }
 159       cur = FilePath(system_buffer);
 160       break;
 161     case base::DIR_USER_QUICK_LAUNCH:
 162       if (!PathService::Get(base::DIR_APP_DATA, &cur))
 163         return false;
 164       // According to various sources, appending
 165       // "Microsoft\Internet Explorer\Quick Launch" to %appdata% is the only
 166       // reliable way to get the quick launch folder across all versions of
 167       // Windows.
 168       // http://stackoverflow.com/questions/76080/how-do-you-reliably-get-the-quick-
 169       // http://www.microsoft.com/technet/scriptcenter/resources/qanda/sept05/hey0901.mspx
 170       cur = cur.AppendASCII("Microsoft")
 171                 .AppendASCII("Internet Explorer")
 172                 .AppendASCII("Quick Launch");
 173       break;
 174     case base::DIR_TASKBAR_PINS:
 175       if (!PathService::Get(base::DIR_USER_QUICK_LAUNCH, &cur))
 176         return false;
 177       cur = cur.AppendASCII("User Pinned");
 178       cur = cur.AppendASCII("TaskBar");
 179       break;
 180     case base::DIR_WINDOWS_FONTS:
 181       if (FAILED(SHGetFolderPath(
 182               NULL, CSIDL_FONTS, NULL, SHGFP_TYPE_CURRENT, system_buffer))) {
 183         return false;
 184       }
 185       cur = FilePath(system_buffer);
 186       break;
 187     default:
 188       return false;
 189   }
 190
 191   *result = cur;
 192   return true;
 193 }
 194
 195 }  // namespace base