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
|
// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/component_updater/android/loader_policies/tpcd_metadata_component_loader_policy.h"
#include <cstdint>
#include <optional>
#include <string>
#include <utility>
#include <vector>
#include "base/containers/flat_map.h"
#include "base/files/file_util.h"
#include "base/files/scoped_file.h"
#include "base/logging.h"
#include "base/task/thread_pool.h"
#include "base/version.h"
#include "components/component_updater/android/component_loader_policy.h"
#include "components/component_updater/installer_policies/tpcd_metadata_component_installer_policy.h"
namespace {
// Persisted to logs, should never change.
constexpr char kTpcdMetadataComponentMetricsSuffix[] = "TpcdMetadata";
// Loads the raw metadata as a string from the component file in storage.
std::optional<std::string> LoadTpcdMetadataFromDisk(base::ScopedFD fd) {
std::string raw_tpcd_metadata;
if (base::ReadStreamToString(base::FileToFILE(base::File(std::move(fd)), "r"),
&raw_tpcd_metadata)) {
return raw_tpcd_metadata;
}
return nullptr;
}
} // namespace
namespace component_updater {
TpcdMetadataComponentLoaderPolicy::TpcdMetadataComponentLoaderPolicy(
OnTpcdMetadataComponentReadyCallback on_component_ready_callback)
: on_component_ready_callback_(std::move(on_component_ready_callback)) {}
TpcdMetadataComponentLoaderPolicy::~TpcdMetadataComponentLoaderPolicy() =
default;
void TpcdMetadataComponentLoaderPolicy::ComponentLoaded(
const base::Version& version,
base::flat_map<std::string, base::ScopedFD>& fd_map,
base::Value::Dict manifest) {
auto keys_fd_iterator = fd_map.find(kTpcdMetadataComponentFileName);
if (keys_fd_iterator == fd_map.end()) {
VLOG(1) << "TpcdMetadataComponentLoaderPolicy#ComponentLoaded "
"failed because "
<< kTpcdMetadataComponentFileName << " was not found in the fd map";
return;
}
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE, {base::MayBlock(), base::TaskPriority::BEST_EFFORT},
base::BindOnce(&LoadTpcdMetadataFromDisk,
std::move(keys_fd_iterator->second)),
base::BindOnce(
[](OnTpcdMetadataComponentReadyCallback on_component_ready_callback,
std::optional<std::string> maybe_contents) {
if (maybe_contents.has_value()) {
on_component_ready_callback.Run(maybe_contents.value());
}
},
on_component_ready_callback_));
}
void TpcdMetadataComponentLoaderPolicy::ComponentLoadFailed(
ComponentLoadResult /*error*/) {}
void TpcdMetadataComponentLoaderPolicy::GetHash(
std::vector<uint8_t>* hash) const {
component_updater::TpcdMetadataComponentInstallerPolicy::GetPublicKeyHash(
hash);
}
std::string TpcdMetadataComponentLoaderPolicy::GetMetricsSuffix() const {
return kTpcdMetadataComponentMetricsSuffix;
}
} // namespace component_updater
|
