chrome/browser/platform_util_win.cc

   1 // Copyright (c) 2011 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/browser/platform_util.h"
   6
   7 #include <windows.h>  // Must be in front of other Windows header files.
   8
   9 #include <commdlg.h>
  10 #include <dwmapi.h>
  11 #include <shellapi.h>
  12 #include <shlobj.h>
  13 #include <stddef.h>
  14 #include <wrl/client.h>
  15
  16 #include "base/bind.h"
  17 #include "base/files/file_path.h"
  18 #include "base/files/file_util.h"
  19 #include "base/logging.h"
  20 #include "base/stl_util.h"
  21 #include "base/strings/string_util.h"
  22 #include "base/strings/utf_string_conversions.h"
  23 #include "base/task/post_task.h"
  24 #include "base/task/thread_pool.h"
  25 #include "base/threading/scoped_blocking_call.h"
  26 #include "base/win/registry.h"
  27 #include "base/win/scoped_co_mem.h"
  28 #include "chrome/browser/platform_util_internal.h"
  29 #include "content/public/browser/browser_thread.h"
  30 #include "ui/base/win/shell.h"
  31 #include "ui/gfx/native_widget_types.h"
  32 #include "url/gurl.h"
  33
  34 using content::BrowserThread;
  35
  36 namespace platform_util {
  37
  38 namespace {
  39
  40 void ShowItemInFolderOnWorkerThread(const base::FilePath& full_path) {
  41   base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
  42                                                 base::BlockingType::MAY_BLOCK);
  43   base::FilePath dir = full_path.DirName().AsEndingWithSeparator();
  44   // ParseDisplayName will fail if the directory is "C:", it must be "C:\\".
  45   if (dir.empty())
  46     return;
  47
  48   Microsoft::WRL::ComPtr<IShellFolder> desktop;
  49   HRESULT hr = SHGetDesktopFolder(desktop.GetAddressOf());
  50   if (FAILED(hr))
  51     return;
  52
  53   base::win::ScopedCoMem<ITEMIDLIST> dir_item;
  54   hr = desktop->ParseDisplayName(NULL, NULL,
  55                                  const_cast<wchar_t *>(dir.value().c_str()),
  56                                  NULL, &dir_item, NULL);
  57   if (FAILED(hr))
  58     return;
  59
  60   base::win::ScopedCoMem<ITEMIDLIST> file_item;
  61   hr = desktop->ParseDisplayName(NULL, NULL,
  62       const_cast<wchar_t *>(full_path.value().c_str()),
  63       NULL, &file_item, NULL);
  64   if (FAILED(hr))
  65     return;
  66
  67   const ITEMIDLIST* highlight[] = {file_item};
  68
  69   hr =
  70       SHOpenFolderAndSelectItems(dir_item, base::size(highlight), highlight, 0);
  71   if (FAILED(hr)) {
  72     // On some systems, the above call mysteriously fails with "file not
  73     // found" even though the file is there.  In these cases, ShellExecute()
  74     // seems to work as a fallback (although it won't select the file).
  75     if (hr == ERROR_FILE_NOT_FOUND) {
  76       ShellExecute(NULL, L"open", dir.value().c_str(), NULL, NULL, SW_SHOW);
  77     } else {
  78       LOG(WARNING) << " " << __func__ << "(): Can't open full_path = \""
  79                    << full_path.value() << "\""
  80                    << " hr = " << logging::SystemErrorCodeToString(hr);
  81     }
  82   }
  83 }
  84
  85 void OpenExternalOnWorkerThread(const GURL& url) {
  86   base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
  87                                                 base::BlockingType::MAY_BLOCK);
  88   // Quote the input scheme to be sure that the command does not have
  89   // parameters unexpected by the external program. This url should already
  90   // have been escaped.
  91   std::string escaped_url = url.spec();
  92   escaped_url.insert(0, "\"");
  93   escaped_url += "\"";
  94
  95   // According to Mozilla in uriloader/exthandler/win/nsOSHelperAppService.cpp:
  96   // "Some versions of windows (Win2k before SP3, Win XP before SP1) crash in
  97   // ShellExecute on long URLs (bug 161357 on bugzilla.mozilla.org). IE 5 and 6
  98   // support URLS of 2083 chars in length, 2K is safe."
  99   //
 100   // It may be possible to increase this. https://crbug.com/727909
 101   const size_t kMaxUrlLength = 2048;
 102   if (escaped_url.length() > kMaxUrlLength)
 103     return;
 104
 105   if (reinterpret_cast<ULONG_PTR>(ShellExecuteA(NULL, "open",
 106                                                 escaped_url.c_str(), NULL, NULL,
 107                                                 SW_SHOWNORMAL)) <= 32) {
 108     // On failure, it may be good to display a message to the user.
 109     // https://crbug.com/727913
 110     return;
 111   }
 112 }
 113
 114 }  // namespace
 115
 116 void ShowItemInFolder(Profile* profile, const base::FilePath& full_path) {
 117   base::ThreadPool::CreateCOMSTATaskRunner(
 118       {base::MayBlock(), base::TaskPriority::USER_BLOCKING})
 119       ->PostTask(FROM_HERE,
 120                  base::BindOnce(&ShowItemInFolderOnWorkerThread, full_path));
 121 }
 122
 123 namespace internal {
 124
 125 void PlatformOpenVerifiedItem(const base::FilePath& path, OpenItemType type) {
 126   // May result in an interactive dialog.
 127   base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
 128                                                 base::BlockingType::MAY_BLOCK);
 129   switch (type) {
 130     case OPEN_FILE:
 131       ui::win::OpenFileViaShell(path);
 132       break;
 133
 134     case OPEN_FOLDER:
 135       ui::win::OpenFolderViaShell(path);
 136       break;
 137   }
 138 }
 139
 140 }  // namespace internal
 141
 142 void OpenExternal(Profile* profile, const GURL& url) {
 143   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 144
 145   base::ThreadPool::CreateCOMSTATaskRunner(
 146       {base::MayBlock(), base::TaskPriority::USER_BLOCKING})
 147       ->PostTask(FROM_HERE, base::BindOnce(&OpenExternalOnWorkerThread, url));
 148 }
 149
 150 }  // namespace platform_util