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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/browser/load_and_localize_file.h"
#include <algorithm>
#include "base/task/single_thread_task_runner.h"
#include "base/task/task_traits.h"
#include "base/task/thread_pool.h"
#include "base/threading/scoped_blocking_call.h"
#include "extensions/browser/component_extension_resource_manager.h"
#include "extensions/browser/extensions_browser_client.h"
#include "extensions/browser/file_reader.h"
#include "extensions/browser/l10n_file_util.h"
#include "extensions/common/extension.h"
#include "extensions/common/extension_id.h"
#include "extensions/common/extension_l10n_util.h"
#include "extensions/common/extension_resource.h"
#include "extensions/common/manifest.h"
#include "extensions/common/manifest_constants.h"
#include "extensions/common/message_bundle.h"
#include "ui/base/resource/resource_bundle.h"
namespace extensions {
namespace {
void MaybeLocalizeInBackground(
const ExtensionId& extension_id,
const base::FilePath& extension_path,
const std::string& extension_default_locale,
extension_l10n_util::GzippedMessagesPermission gzip_permission,
std::string* data) {
bool needs_message_substituion =
data->find(extensions::MessageBundle::kMessageBegin) != std::string::npos;
if (!needs_message_substituion) {
return;
}
base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
base::BlockingType::MAY_BLOCK);
std::unique_ptr<MessageBundle::SubstitutionMap> localization_messages =
l10n_file_util::LoadMessageBundleSubstitutionMap(
extension_path, extension_id, extension_default_locale,
gzip_permission);
std::string error;
MessageBundle::ReplaceMessagesWithExternalDictionary(*localization_messages,
data, &error);
}
// A simple wrapper around MaybeLocalizeInBackground() that returns |data| to
// serve as an adapter for PostTaskAndReply.
std::vector<std::unique_ptr<std::string>>
LocalizeComponentResourcesInBackground(
std::vector<std::unique_ptr<std::string>> data,
const ExtensionId& extension_id,
const base::FilePath& extension_path,
const std::string& extension_default_locale,
extension_l10n_util::GzippedMessagesPermission gzip_permission) {
for (auto& resource : data) {
MaybeLocalizeInBackground(extension_id, extension_path,
extension_default_locale, gzip_permission,
resource.get());
}
return data;
}
// A helper function to load component resources.
std::vector<std::unique_ptr<std::string>> LoadComponentResources(
const ComponentExtensionResourceManager& resource_manager,
const std::vector<ExtensionResource>& resources) {
std::vector<std::unique_ptr<std::string>> data;
data.reserve(resources.size());
for (const auto& resource : resources) {
int resource_id = 0;
bool is_component_resource = resource_manager.IsComponentExtensionResource(
resource.extension_root(), resource.relative_path(), &resource_id);
DCHECK(is_component_resource)
<< "If any resources passed to LoadAndLocalizeResources() "
"are component resources, they all must be.";
auto resource_data = std::make_unique<std::string>(
ui::ResourceBundle::GetSharedInstance().LoadDataResourceString(
resource_id));
data.push_back(std::move(resource_data));
}
return data;
}
} // namespace
void LoadAndLocalizeResources(const Extension& extension,
std::vector<ExtensionResource> resources,
bool localize_file,
size_t max_script_length,
LoadAndLocalizeResourcesCallback callback) {
DCHECK(!resources.empty());
DCHECK(std::ranges::all_of(resources, [](const ExtensionResource& resource) {
return !resource.extension_root().empty() &&
!resource.relative_path().empty();
}));
std::string extension_default_locale;
if (const std::string* temp =
extension.manifest()->FindStringPath(manifest_keys::kDefaultLocale)) {
extension_default_locale = *temp;
}
auto gzip_permission =
extension_l10n_util::GetGzippedMessagesPermissionForExtension(&extension);
// Check whether the resource should be loaded as a component resource (from
// the resource bundle) or read from disk.
// We assume (and assert) that if any resource is a component extension
// resource, they all must be. Read the first resource passed to check if it
// is a component resource, and treat them all as such if it is.
const ComponentExtensionResourceManager*
component_extension_resource_manager =
ExtensionsBrowserClient::Get()
->GetComponentExtensionResourceManager();
int unused_resource_id = 0;
bool are_component_resources =
component_extension_resource_manager &&
component_extension_resource_manager->IsComponentExtensionResource(
resources.front().extension_root(), resources.front().relative_path(),
&unused_resource_id);
if (are_component_resources) {
std::vector<std::unique_ptr<std::string>> data = LoadComponentResources(
*component_extension_resource_manager, resources);
// Even if no localization is necessary, we post the task asynchronously
// so that |callback| is not run re-entrantly.
if (!localize_file) {
base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE,
base::BindOnce(std::move(callback), std::move(data), std::nullopt));
} else {
auto callback_adapter =
[](LoadAndLocalizeResourcesCallback callback,
std::vector<std::unique_ptr<std::string>> data) {
std::move(callback).Run(std::move(data), std::nullopt);
};
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE,
{base::MayBlock(), base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN},
base::BindOnce(&LocalizeComponentResourcesInBackground,
std::move(data), extension.id(), extension.path(),
extension_default_locale, gzip_permission),
base::BindOnce(callback_adapter, std::move(callback)));
}
return;
}
// Otherwise, it's not a set of component resources, and we need to load them
// from disk.
FileReader::OptionalFileSequenceTask get_file_and_l10n_callback;
if (localize_file) {
get_file_and_l10n_callback = base::BindRepeating(
&MaybeLocalizeInBackground, extension.id(), extension.path(),
extension_default_locale, gzip_permission);
}
auto file_reader = base::MakeRefCounted<FileReader>(
std::move(resources), max_script_length,
std::move(get_file_and_l10n_callback), std::move(callback));
file_reader->Start();
}
} // namespace extensions
|
