| // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // We handle some special browser-level URLs (like "about:version") |
| // before they're handed to a renderer. This lets us do the URL handling |
| // on the browser side (which has access to more information than the |
| // renderers do) as well as sidestep the risk of exposing data to |
| // random web pages (because from the resource loader's perspective, these |
| // URL schemes don't exist). |
| |
| #ifndef CHROME_BROWSER_BROWSER_URL_HANDLER_H_ |
| #define CHROME_BROWSER_BROWSER_URL_HANDLER_H_ |
| #pragma once |
| |
| #include <vector> |
| #include <utility> |
| |
| #include "base/gtest_prod_util.h" |
| #include "base/memory/singleton.h" |
| |
| class GURL; |
| class Profile; |
| |
| // BrowserURLHandler manages the list of all special URLs and manages |
| // dispatching the URL handling to registered handlers. |
| class BrowserURLHandler { |
| public: |
| // The type of functions that can process a URL. |
| // If a handler handles |url|, it should : |
| // - optionally modify |url| to the URL that should be sent to the renderer |
| // If the URL is not handled by a handler, it should return false. |
| typedef bool (*URLHandler)(GURL* url, Profile* profile); |
| |
| // Returns the singleton instance. |
| static BrowserURLHandler* GetInstance(); |
| |
| // RewriteURLIfNecessary gives all registered URLHandlers a shot at processing |
| // the given URL, and modifies it in place. |
| // If the original URL needs to be adjusted if the modified URL is redirected, |
| // this function sets |reverse_on_redirect| to true. |
| void RewriteURLIfNecessary(GURL* url, Profile* profile, |
| bool* reverse_on_redirect); |
| |
| // Reverses the rewriting that was done for |original| using the new |url|. |
| bool ReverseURLRewrite(GURL* url, const GURL& original, |
| Profile* profile); |
| |
| // We initialize the list of url_handlers_ lazily the first time |
| // RewriteURLIfNecessary is called. |
| void InitURLHandlers(); |
| |
| private: |
| // This object is a singleton: |
| BrowserURLHandler(); |
| ~BrowserURLHandler(); |
| friend struct DefaultSingletonTraits<BrowserURLHandler>; |
| |
| // The list of known URLHandlers, optionally with reverse-rewriters. |
| typedef std::pair<URLHandler, URLHandler> HandlerPair; |
| std::vector<HandlerPair> url_handlers_; |
| |
| // Returns the null handler for use with |AddHandlerPair()|. |
| static URLHandler null_handler(); |
| |
| // Add the specified handler pair to the list of URL handlers. |
| void AddHandlerPair(URLHandler handler, URLHandler reverse_handler); |
| |
| FRIEND_TEST_ALL_PREFIXES(BrowserURLHandlerTest, BasicRewriteAndReverse); |
| FRIEND_TEST_ALL_PREFIXES(BrowserURLHandlerTest, NullHandlerReverse); |
| |
| DISALLOW_COPY_AND_ASSIGN(BrowserURLHandler); |
| }; |
| |
| #endif // CHROME_BROWSER_BROWSER_URL_HANDLER_H_ |