chrome/browser/browser_about_handler.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 "chrome/browser/browser_about_handler.h"
   6
   7 #include <string>
   8
   9 #include "base/logging.h"
  10 #include "base/strings/string_util.h"
  11 #include "chrome/browser/lifetime/application_lifetime.h"
  12 #include "chrome/browser/ui/browser_dialogs.h"
  13 #include "chrome/common/net/url_fixer_upper.h"
  14 #include "chrome/common/url_constants.h"
  15
  16 bool WillHandleBrowserAboutURL(GURL* url,
  17                                content::BrowserContext* browser_context) {
  18   // TODO(msw): Eliminate "about:*" constants and literals from code and tests,
  19   //            then hopefully we can remove this forced fixup.
  20   *url = URLFixerUpper::FixupURL(url->possibly_invalid_spec(), std::string());
  21
  22   // Check that about: URLs are fixed up to chrome: by URLFixerUpper::FixupURL.
  23   DCHECK((*url == GURL(content::kAboutBlankURL)) ||
  24          !url->SchemeIs(content::kAboutScheme));
  25
  26   // Only handle chrome://foo/, URLFixerUpper::FixupURL translates about:foo.
  27   if (!url->SchemeIs(content::kChromeUIScheme))
  28     return false;
  29
  30   std::string host(url->host());
  31   std::string path;
  32   // Replace about with chrome-urls.
  33   if (host == chrome::kChromeUIAboutHost)
  34     host = chrome::kChromeUIChromeURLsHost;
  35   // Replace cache with view-http-cache.
  36   if (host == chrome::kChromeUICacheHost) {
  37     host = content::kChromeUINetworkViewCacheHost;
  38   // Replace sync with sync-internals (for legacy reasons).
  39   } else if (host == chrome::kChromeUISyncHost) {
  40     host = chrome::kChromeUISyncInternalsHost;
  41   // Redirect chrome://extensions.
  42   } else if (host == chrome::kChromeUIExtensionsHost) {
  43     host = chrome::kChromeUIUberHost;
  44     path = chrome::kChromeUIExtensionsHost + url->path();
  45   // Redirect chrome://settings/extensions (legacy URL).
  46   } else if (host == chrome::kChromeUISettingsHost &&
  47       url->path() == std::string("/") + chrome::kExtensionsSubPage) {
  48     host = chrome::kChromeUIUberHost;
  49     path = chrome::kChromeUIExtensionsHost;
  50   // Redirect chrome://history.
  51   } else if (host == chrome::kChromeUIHistoryHost) {
  52 #if defined(OS_ANDROID)
  53     // On Android, redirect directly to chrome://history-frame since
  54     // uber page is unsupported.
  55     host = chrome::kChromeUIHistoryFrameHost;
  56 #else
  57     host = chrome::kChromeUIUberHost;
  58     path = chrome::kChromeUIHistoryHost + url->path();
  59 #endif
  60   // Redirect chrome://settings
  61   } else if (host == chrome::kChromeUISettingsHost) {
  62     host = chrome::kChromeUIUberHost;
  63     path = chrome::kChromeUISettingsHost + url->path();
  64   // Redirect chrome://help
  65   } else if (host == chrome::kChromeUIHelpHost) {
  66     host = chrome::kChromeUIUberHost;
  67     path = chrome::kChromeUIHelpHost + url->path();
  68   }
  69
  70   GURL::Replacements replacements;
  71   replacements.SetHostStr(host);
  72   if (!path.empty())
  73     replacements.SetPathStr(path);
  74   *url = url->ReplaceComponents(replacements);
  75
  76   // Having re-written the URL, make the chrome: handler process it.
  77   return false;
  78 }
  79
  80 bool HandleNonNavigationAboutURL(const GURL& url) {
  81   const std::string host(url.host());
  82
  83   if (host == chrome::kChromeUIRestartHost) {
  84     // Call AttemptRestart after chrome::Navigate() completes to avoid access of
  85     // gtk objects after they are destroyed by BrowserWindowGtk::Close().
  86     base::MessageLoop::current()->PostTask(FROM_HERE,
  87         base::Bind(&chrome::AttemptRestart));
  88     return true;
  89   } else if (host == chrome::kChromeUIQuitHost) {
  90     base::MessageLoop::current()->PostTask(FROM_HERE,
  91         base::Bind(&chrome::AttemptExit));
  92     return true;
  93   }
  94
  95   // chrome://ipc/ is currently buggy, so we disable it for official builds.
  96 #if !defined(OFFICIAL_BUILD)
  97
  98 #if (defined(OS_MACOSX) || defined(OS_WIN)) && defined(IPC_MESSAGE_LOG_ENABLED)
  99   if (LowerCaseEqualsASCII(url.spec(), chrome::kChromeUIIPCURL)) {
 100     // Run the dialog. This will re-use the existing one if it's already up.
 101     chrome::ShowAboutIPCDialog();
 102     return true;
 103   }
 104 #endif
 105
 106 #endif  // OFFICIAL_BUILD
 107
 108   return false;
 109 }