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
|
// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/first_party_sets/first_party_sets_loader.h"
#include <sstream>
#include <utility>
#include "base/containers/flat_map.h"
#include "base/files/file_util.h"
#include "base/metrics/histogram_functions.h"
#include "base/sequence_checker.h"
#include "base/task/task_traits.h"
#include "base/task/thread_pool.h"
#include "base/version.h"
#include "content/browser/first_party_sets/first_party_set_parser.h"
#include "net/base/features.h"
#include "net/first_party_sets/global_first_party_sets.h"
#include "net/first_party_sets/local_set_declaration.h"
namespace content {
namespace {
std::string ReadSetsFile(base::File sets_file) {
std::string raw_sets;
base::ScopedFILE file(FileToFILE(std::move(sets_file), "r"));
return base::ReadStreamToString(file.get(), &raw_sets) ? raw_sets : "";
}
} // namespace
FirstPartySetsLoader::FirstPartySetsLoader(
LoadCompleteOnceCallback on_load_complete)
: on_load_complete_(std::move(on_load_complete)) {}
FirstPartySetsLoader::~FirstPartySetsLoader() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
}
void FirstPartySetsLoader::SetManuallySpecifiedSet(
const net::LocalSetDeclaration& local_set) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (manually_specified_set_.has_value()) {
return;
}
manually_specified_set_ = local_set;
UmaHistogramTimes(
"Cookie.FirstPartySets.InitializationDuration.ReadCommandLineSet2",
construction_timer_.Elapsed());
MaybeFinishLoading();
}
void FirstPartySetsLoader::SetComponentSets(base::Version version,
base::File sets_file) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (component_sets_parse_progress_ != Progress::kNotStarted) {
DisposeFile(std::move(sets_file));
return;
}
component_sets_parse_progress_ = Progress::kStarted;
if (!sets_file.IsValid() || !version.IsValid()) {
OnReadSetsFile(base::Version(), "");
return;
}
// We may use USER_BLOCKING here since First-Party Set initialization may
// block network navigations at startup. Otherwise, initialization blocks
// resolution of promises from `document.requestStorageAccess()`, but those
// calls are unlikely to occur during startup.
base::TaskPriority priority =
base::FeatureList::IsEnabled(net::features::kWaitForFirstPartySetsInit)
? base::TaskPriority::USER_BLOCKING
: base::TaskPriority::USER_VISIBLE;
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE, {base::MayBlock(), priority},
base::BindOnce(&ReadSetsFile, std::move(sets_file)),
base::BindOnce(&FirstPartySetsLoader::OnReadSetsFile,
weak_factory_.GetWeakPtr(), std::move(version)));
}
// static
void FirstPartySetsLoader::DisposeFile(base::File file) {
if (!file.IsValid()) {
return;
}
base::ThreadPool::PostTask(
FROM_HERE, {base::MayBlock(), base::TaskPriority::BEST_EFFORT},
base::BindOnce(
[](base::File file) {
// Run `file`'s dtor in the threadpool.
},
std::move(file)));
}
void FirstPartySetsLoader::OnReadSetsFile(base::Version version,
const std::string& raw_sets) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
DCHECK_EQ(component_sets_parse_progress_, Progress::kStarted);
std::istringstream stream(raw_sets);
sets_ = FirstPartySetParser::ParseSetsFromStream(stream, std::move(version),
/*emit_errors=*/false,
/*emit_metrics=*/true);
component_sets_parse_progress_ = Progress::kFinished;
UmaHistogramTimes(
"Cookie.FirstPartySets.InitializationDuration.ReadComponentSets2",
construction_timer_.Elapsed());
MaybeFinishLoading();
}
void FirstPartySetsLoader::MaybeFinishLoading() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (component_sets_parse_progress_ != Progress::kFinished ||
!manually_specified_set_.has_value()) {
return;
}
sets_->ApplyManuallySpecifiedSet(manually_specified_set_.value());
std::move(on_load_complete_).Run(std::move(sets_).value());
}
} // namespace content
|
