blob: 4798679897adae20791c3e0f9c69a0551e9abc22 (
plain)
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
77
78
|
// Copyright (c) 2012 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.
#ifndef CHROME_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_THROTTLE_H_
#define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_THROTTLE_H_
#include "base/memory/weak_ptr.h"
#include "chrome/browser/download/download_request_limiter.h"
#include "content/public/browser/resource_throttle.h"
class GURL;
// DownloadResourceThrottle is used to determine if a download should be
// allowed. When a DownloadResourceThrottle is created it pauses the download
// and asks the DownloadRequestLimiter if the download should be allowed. The
// DownloadRequestLimiter notifies us asynchronously as to whether the download
// is allowed or not. If the download is allowed the request is resumed. If
// the download is not allowed the request is canceled.
class DownloadResourceThrottle
: public content::ResourceThrottle,
public base::SupportsWeakPtr<DownloadResourceThrottle> {
public:
// Information passed between callbacks to check whether download can proceed.
struct DownloadRequestInfo {
DownloadRequestInfo(
scoped_refptr<DownloadRequestLimiter> limiter,
const content::ResourceRequestInfo::WebContentsGetter&
web_contents_getter,
const GURL& url,
const std::string& request_method,
const DownloadRequestLimiter::Callback& continue_callback);
~DownloadRequestInfo();
scoped_refptr<DownloadRequestLimiter> limiter;
content::ResourceRequestInfo::WebContentsGetter web_contents_getter;
GURL url;
std::string request_method;
DownloadRequestLimiter::Callback continue_callback;
private:
DISALLOW_COPY_AND_ASSIGN(DownloadRequestInfo);
};
DownloadResourceThrottle(
scoped_refptr<DownloadRequestLimiter> limiter,
const content::ResourceRequestInfo::WebContentsGetter&
web_contents_getter,
const GURL& url,
const std::string& request_method);
// content::ResourceThrottle implementation:
void WillStartRequest(bool* defer) override;
void WillRedirectRequest(const net::RedirectInfo& redirect_info,
bool* defer) override;
void WillProcessResponse(bool* defer) override;
const char* GetNameForLogging() const override;
void ContinueDownload(bool allow);
private:
~DownloadResourceThrottle() override;
void WillDownload(bool* defer);
// Set to true when we are querying the DownloadRequestLimiter.
bool querying_limiter_;
// Set to true when we know that the request is allowed to start.
bool request_allowed_;
// Set to true when we have deferred the request.
bool request_deferred_;
DISALLOW_COPY_AND_ASSIGN(DownloadResourceThrottle);
};
#endif // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_THROTTLE_H_
|
