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
|
// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_PAYMENTS_CORE_HAS_ENROLLED_INSTRUMENT_QUERY_H_
#define COMPONENTS_PAYMENTS_CORE_HAS_ENROLLED_INSTRUMENT_QUERY_H_
#include <map>
#include <memory>
#include <set>
#include <string>
#include "base/memory/weak_ptr.h"
#include "base/timer/timer.h"
#include "components/keyed_service/core/keyed_service.h"
class GURL;
namespace payments {
// Keeps track of hasEnrolledInstrument() queries per browser context.
class HasEnrolledInstrumentQuery : public KeyedService {
public:
HasEnrolledInstrumentQuery();
HasEnrolledInstrumentQuery(const HasEnrolledInstrumentQuery&) = delete;
HasEnrolledInstrumentQuery& operator=(
const HasEnrolledInstrumentQuery&) = delete;
~HasEnrolledInstrumentQuery() override;
// Returns whether |top_level_origin| and |frame_origin| can call
// hasEnrolledInstrument() with |query|, which is a mapping of payment method
// names to the corresponding JSON-stringified payment method data. Remembers
// the origins-to-query mapping for 30 minutes to enforce the quota.
//
// GURL type is used instead of url::Origin to represent origins, because they
// need to be serialized into map keys and url::Origin serializations must not
// be relied upon for security checks, according to url/origin.h.
//
// The best method to retrieve the origin of GURL for serialization is
// url_formatter::FormatUrlForSecurityDisplay() found in
// components/url_formatter/elide_url.h, because it preserves the path part of
// a file:// scheme GURL, in contrast to to GURL::GetOrigin(), which strips
// the path part of a file:// scheme GURL. There's no difference between these
// two methods for localhost and https:// schemes, where PaymentRequest is
// also allowed.
bool CanQuery(const GURL& top_level_origin,
const GURL& frame_origin,
const std::map<std::string, std::set<std::string>>& query);
// KeyedService implementation.
void Shutdown() override;
private:
void ExpireQuotaForFrameOrigin(const std::string& id);
// A mapping of an identififer to the timer that, when fired, allows the frame
// to invoke hasEnrolledInstrument() with the same identifier again.
std::map<std::string, std::unique_ptr<base::OneShotTimer>> timers_;
// A mapping of frame origin and top level origin to its last query. Each
// query is a mapping of payment method names to the corresponding
// JSON-stringified payment method data.
std::map<std::string, std::map<std::string, std::set<std::string>>> queries_;
base::WeakPtrFactory<HasEnrolledInstrumentQuery> weak_ptr_factory_{this};
};
} // namespace payments
#endif // COMPONENTS_PAYMENTS_CORE_HAS_ENROLLED_INSTRUMENT_QUERY_H_
|
