1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
// 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 CONTENT_BROWSER_BROWSER_URL_HANDLER_H_
#define CONTENT_BROWSER_BROWSER_URL_HANDLER_H_
#pragma once
#include <vector>
#include <utility>
#include "base/gtest_prod_util.h"
#include "base/memory/singleton.h"
class GURL;
namespace content {
class BrowserContext;
}
// 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,
content::BrowserContext* browser_context);
// 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,
content::BrowserContext* browser_context,
bool* reverse_on_redirect);
// Reverses the rewriting that was done for |original| using the new |url|.
bool ReverseURLRewrite(GURL* url, const GURL& original,
content::BrowserContext* browser_context);
// Add the specified handler pair to the list of URL handlers.
void AddHandlerPair(URLHandler handler, URLHandler reverse_handler);
// Returns the null handler for use with |AddHandlerPair()|.
static URLHandler null_handler();
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_;
FRIEND_TEST_ALL_PREFIXES(BrowserURLHandlerTest, BasicRewriteAndReverse);
FRIEND_TEST_ALL_PREFIXES(BrowserURLHandlerTest, NullHandlerReverse);
DISALLOW_COPY_AND_ASSIGN(BrowserURLHandler);
};
#endif // CONTENT_BROWSER_BROWSER_URL_HANDLER_H_
|
