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
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
// Copyright 2021 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/component_loader_policy.h"
#include <jni.h>
#include <stdio.h>
#include <stddef.h>
#include <map>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "base/android/jni_android.h"
#include "base/android/jni_array.h"
#include "base/android/jni_string.h"
#include "base/check.h"
#include "base/containers/flat_map.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/files/scoped_file.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/json/json_string_value_serializer.h"
#include "base/location.h"
#include "base/memory/scoped_refptr.h"
#include "base/metrics/histogram_functions.h"
#include "base/sequence_checker.h"
#include "base/strings/strcat.h"
#include "base/strings/string_util.h"
#include "base/task/task_traits.h"
#include "base/task/thread_pool.h"
#include "base/values.h"
#include "base/version.h"
#include "components/component_updater/android/component_loader_policy_forward.h"
#include "components/component_updater/android/components_info_holder.h"
#include "components/component_updater/android/embedded_component_loader_jni_headers/ComponentLoaderPolicyBridge_jni.h"
#include "components/update_client/utils.h"
#include "third_party/abseil-cpp/absl/types/optional.h"
namespace component_updater {
namespace {
constexpr char kManifestFileName[] = "manifest.json";
absl::optional<base::Value::Dict> ReadManifest(
const std::string& manifest_content) {
JSONStringValueDeserializer deserializer(manifest_content);
std::string error;
std::unique_ptr<base::Value> root = deserializer.Deserialize(nullptr, &error);
if (root && root->is_dict())
return std::move(*root).TakeDict();
return absl::nullopt;
}
absl::optional<base::Value::Dict> ReadManifestFromFd(int fd) {
std::string content;
base::ScopedFILE file_stream(
base::FileToFILE(base::File(std::move(fd)), "r"));
return base::ReadStreamToString(file_stream.get(), &content)
? ReadManifest(content)
: absl::nullopt;
}
void RecordComponentLoadStatusHistogram(const std::string& suffix,
ComponentLoadResult status) {
DCHECK(!suffix.empty());
base::UmaHistogramEnumeration(
base::StrCat(
{"ComponentUpdater.AndroidComponentLoader.LoadStatus.", suffix}),
status);
}
} // namespace
ComponentLoaderPolicy::~ComponentLoaderPolicy() = default;
AndroidComponentLoaderPolicy::AndroidComponentLoaderPolicy(
std::unique_ptr<ComponentLoaderPolicy> loader_policy)
: loader_policy_(std::move(loader_policy)) {
JNIEnv* env = base::android::AttachCurrentThread();
obj_.Reset(env, Java_ComponentLoaderPolicyBridge_Constructor(
env, reinterpret_cast<intptr_t>(this))
.obj());
}
AndroidComponentLoaderPolicy::~AndroidComponentLoaderPolicy() = default;
base::android::ScopedJavaLocalRef<jobject>
AndroidComponentLoaderPolicy::GetJavaObject() {
return base::android::ScopedJavaLocalRef<jobject>(obj_);
}
void AndroidComponentLoaderPolicy::ComponentLoaded(
JNIEnv* env,
const base::android::JavaRef<jobjectArray>& jfile_names,
const base::android::JavaRef<jintArray>& jfds) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
std::vector<std::string> file_names;
std::vector<int> fds;
base::android::AppendJavaStringArrayToStringVector(env, jfile_names,
&file_names);
base::android::JavaIntArrayToIntVector(env, jfds, &fds);
DCHECK_EQ(file_names.size(), fds.size());
// Construct the file_name->file_descriptor map excluding the manifest file
// as it's parsed and passed separately.
base::flat_map<std::string, base::ScopedFD> fd_map;
int manifest_fd = -1;
for (size_t i = 0; i < file_names.size(); ++i) {
const std::string& file_name = file_names[i];
if (file_name == kManifestFileName) {
manifest_fd = fds[i];
} else {
fd_map[file_name] = base::ScopedFD(fds[i]);
}
}
if (manifest_fd == -1) {
ComponentLoadFailedInternal(ComponentLoadResult::kMissingManifest);
return;
}
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE,
{base::MayBlock(), base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN},
base::BindOnce(ReadManifestFromFd, manifest_fd),
base::BindOnce(&AndroidComponentLoaderPolicy::NotifyNewVersion,
base::Owned(this), base::OwnedRef(std::move(fd_map))));
}
void AndroidComponentLoaderPolicy::ComponentLoadFailed(JNIEnv* env,
jint error_code) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
DCHECK(error_code > static_cast<int>(ComponentLoadResult::kComponentLoaded));
DCHECK(error_code <= static_cast<int>(ComponentLoadResult::kMaxValue));
ComponentLoadFailedInternal(static_cast<ComponentLoadResult>(error_code));
delete this;
}
std::string AndroidComponentLoaderPolicy::GetComponentId() const {
std::vector<uint8_t> hash;
loader_policy_->GetHash(&hash);
return update_client::GetCrxIdFromPublicKeyHash(hash);
}
base::android::ScopedJavaLocalRef<jstring>
AndroidComponentLoaderPolicy::GetComponentId(JNIEnv* env) {
return base::android::ConvertUTF8ToJavaString(env, GetComponentId());
}
void AndroidComponentLoaderPolicy::NotifyNewVersion(
base::flat_map<std::string, base::ScopedFD>& fd_map,
absl::optional<base::Value::Dict> manifest) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (!manifest) {
ComponentLoadFailedInternal(ComponentLoadResult::kMalformedManifest);
return;
}
std::string version_ascii;
if (const std::string* ptr = manifest->FindString("version")) {
if (base::IsStringASCII(*ptr))
version_ascii = *ptr;
}
base::Version version(version_ascii);
if (!version.IsValid()) {
ComponentLoadFailedInternal(ComponentLoadResult::kInvalidVersion);
return;
}
RecordComponentLoadStatusHistogram(loader_policy_->GetMetricsSuffix(),
ComponentLoadResult::kComponentLoaded);
ComponentsInfoHolder::GetInstance()->AddComponent(GetComponentId(), version);
loader_policy_->ComponentLoaded(version, fd_map, std::move(*manifest));
}
void AndroidComponentLoaderPolicy::ComponentLoadFailedInternal(
ComponentLoadResult error) {
RecordComponentLoadStatusHistogram(loader_policy_->GetMetricsSuffix(), error);
loader_policy_->ComponentLoadFailed(error);
}
// static
base::android::ScopedJavaLocalRef<jobjectArray>
AndroidComponentLoaderPolicy::ToJavaArrayOfAndroidComponentLoaderPolicy(
JNIEnv* env,
ComponentLoaderPolicyVector policies) {
base::android::ScopedJavaLocalRef<jobjectArray> policy_array =
Java_ComponentLoaderPolicyBridge_createNewArray(env, policies.size());
for (size_t i = 0; i < policies.size(); ++i) {
// The `AndroidComponentLoaderPolicy` object is owned by the java
// ComponentLoaderPolicy object which manages its life time and will triger
// deletion.
auto* android_policy =
new AndroidComponentLoaderPolicy(std::move(policies[i]));
Java_ComponentLoaderPolicyBridge_setArrayElement(
env, policy_array, i, android_policy->GetJavaObject());
}
return policy_array;
}
} // namespace component_updater
|
