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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
// Copyright 2017 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 COMPONENTS_SAFE_BROWSING_CONTENT_BROWSER_TRIGGERS_AD_SAMPLER_TRIGGER_H_
#define COMPONENTS_SAFE_BROWSING_CONTENT_BROWSER_TRIGGERS_AD_SAMPLER_TRIGGER_H_
#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "components/safe_browsing/core/common/proto/csd.pb.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
class PrefService;
namespace history {
class HistoryService;
}
namespace network {
class SharedURLLoaderFactory;
} // namespace network
namespace safe_browsing {
class ReferrerChainProvider;
class TriggerManager;
// Param name of the denominator for controlling sampling frequency.
extern const char kAdSamplerFrequencyDenominatorParam[];
// Default frequency for the ad sampler, if not configured in Finch.
extern const size_t kAdSamplerDefaultFrequency;
// A frequency denominator with this value indicates sampling is disabled.
extern const size_t kAdSamplerFrequencyDisabled;
// Metric for tracking what the Ad Sampler trigger does on each navigation.
extern const char kAdSamplerTriggerActionMetricName[];
// Actions performed by this trigger. These values are written to logs. New enum
// values can be added, but existing enums must never be renumbered or deleted
// and reused.
enum AdSamplerTriggerAction {
// An event occurred that caused the trigger to perform its checks.
TRIGGER_CHECK = 0,
// An ad was detected and a sample was collected.
AD_SAMPLED = 1,
// An ad was detected but no sample was taken to honour sampling frequency.
NO_SAMPLE_AD_SKIPPED_FOR_FREQUENCY = 2,
// No ad was detected.
NO_SAMPLE_NO_AD = 3,
// An ad was detected and could have been sampled, but the trigger manager
// rejected the report (eg: because a report was already in progress).
NO_SAMPLE_COULD_NOT_START_REPORT = 4,
// New actions must be added before MAX_ACTIONS.
MAX_ACTIONS
};
// This class periodically checks for Google ads on the page and may decide to
// send a report to Google with the ad's structure for further analysis.
class AdSamplerTrigger : public content::WebContentsObserver,
public content::WebContentsUserData<AdSamplerTrigger> {
public:
AdSamplerTrigger(const AdSamplerTrigger&) = delete;
AdSamplerTrigger& operator=(const AdSamplerTrigger&) = delete;
~AdSamplerTrigger() override;
// content::WebContentsObserver implementation.
void DidFinishLoad(content::RenderFrameHost* render_frame_host,
const GURL& validated_url) override;
private:
friend class AdSamplerTriggerTest;
friend class content::WebContentsUserData<AdSamplerTrigger>;
FRIEND_TEST_ALL_PREFIXES(AdSamplerTriggerTestFinch,
FrequencyDenominatorFeature);
AdSamplerTrigger(
content::WebContents* web_contents,
TriggerManager* trigger_manager,
PrefService* prefs,
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory,
history::HistoryService* history_service,
base::RepeatingCallback<ChromeUserPopulation()>
get_user_population_callback,
ReferrerChainProvider* referrer_chain_provider);
// Called to create an ad sample report.
void CreateAdSampleReport();
// Sets |sampler_frequency_denominator_| for tests.
void SetSamplerFrequencyForTest(size_t denominator);
// Sets a task runner to use for tests.
void SetTaskRunnerForTest(
scoped_refptr<base::SequencedTaskRunner> task_runner);
// Ad samples will be collected with frequency
// 1/|sampler_frequency_denominator_|
size_t sampler_frequency_denominator_;
// The delay (in milliseconds) to wait before starting a report. Can be
// ovewritten for tests.
int64_t start_report_delay_ms_;
// The delay (in milliseconds) to wait before finishing a report. Can be
// overwritten for tests.
int64_t finish_report_delay_ms_;
// TriggerManager gets called if this trigger detects an ad and wants to
// collect some data about it. Not owned.
raw_ptr<TriggerManager> trigger_manager_;
raw_ptr<PrefService> prefs_;
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory_;
raw_ptr<history::HistoryService> history_service_;
base::RepeatingCallback<ChromeUserPopulation()> get_user_population_callback_;
raw_ptr<ReferrerChainProvider> referrer_chain_provider_;
// Task runner for posting delayed tasks. Normally set to the runner for the
// UI thread, but can be overwritten for tests.
scoped_refptr<base::SequencedTaskRunner> task_runner_;
base::WeakPtrFactory<AdSamplerTrigger> weak_ptr_factory_{this};
WEB_CONTENTS_USER_DATA_KEY_DECL();
};
} // namespace safe_browsing
#endif // COMPONENTS_SAFE_BROWSING_CONTENT_BROWSER_TRIGGERS_AD_SAMPLER_TRIGGER_H_
|
