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
210
211
212
213
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <limits>
#include "mozilla/Hal.h"
#include "ConnectionWorker.h"
#include "mozilla/dom/WorkerPrivate.h"
#include "mozilla/dom/WorkerRef.h"
#include "mozilla/dom/WorkerRunnable.h"
#include "mozilla/dom/WorkerScope.h"
namespace mozilla::dom::network {
class ConnectionProxy final : public hal::NetworkObserver {
public:
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(ConnectionProxy)
static already_AddRefed<ConnectionProxy> Create(
WorkerPrivate* aWorkerPrivate, ConnectionWorker* aConnection) {
RefPtr<ConnectionProxy> proxy = new ConnectionProxy(aConnection);
RefPtr<StrongWorkerRef> workerRef = StrongWorkerRef::Create(
aWorkerPrivate, "ConnectionProxy", [proxy]() { proxy->Shutdown(); });
if (NS_WARN_IF(!workerRef)) {
return nullptr;
}
proxy->mWorkerRef = new ThreadSafeWorkerRef(workerRef);
return proxy.forget();
}
ThreadSafeWorkerRef* WorkerRef() const { return mWorkerRef; }
// For IObserver - main-thread only.
void Notify(const hal::NetworkInformation& aNetworkInfo) override;
void Shutdown();
void Update(ConnectionType aType, bool aIsWifi, uint32_t aDHCPGateway) {
MOZ_ASSERT(mConnection);
MOZ_ASSERT(IsCurrentThreadRunningWorker());
mConnection->Update(aType, aIsWifi, aDHCPGateway, true);
}
private:
explicit ConnectionProxy(ConnectionWorker* aConnection)
: mConnection(aConnection) {}
~ConnectionProxy() = default;
// Raw pointer because the ConnectionWorker keeps alive the proxy.
// This is touched only on the worker-thread and it's nullified when the
// shutdown procedure starts.
ConnectionWorker* mConnection;
RefPtr<ThreadSafeWorkerRef> mWorkerRef;
};
namespace {
// This class initializes the hal observer on the main-thread.
class InitializeRunnable : public WorkerMainThreadRunnable {
private:
// raw pointer because this is a sync runnable.
ConnectionProxy* mProxy;
hal::NetworkInformation& mNetworkInfo;
public:
InitializeRunnable(WorkerPrivate* aWorkerPrivate, ConnectionProxy* aProxy,
hal::NetworkInformation& aNetworkInfo)
: WorkerMainThreadRunnable(aWorkerPrivate,
"ConnectionWorker :: Initialize"_ns),
mProxy(aProxy),
mNetworkInfo(aNetworkInfo) {
MOZ_ASSERT(aProxy);
aWorkerPrivate->AssertIsOnWorkerThread();
}
bool MainThreadRun() override {
MOZ_ASSERT(NS_IsMainThread());
hal::RegisterNetworkObserver(mProxy);
hal::GetCurrentNetworkInformation(&mNetworkInfo);
return true;
}
};
// This class turns down the hal observer on the main-thread.
class ShutdownRunnable : public WorkerMainThreadRunnable {
private:
// raw pointer because this is a sync runnable.
ConnectionProxy* mProxy;
public:
ShutdownRunnable(WorkerPrivate* aWorkerPrivate, ConnectionProxy* aProxy)
: WorkerMainThreadRunnable(aWorkerPrivate,
"ConnectionWorker :: Shutdown"_ns),
mProxy(aProxy) {
MOZ_ASSERT(aProxy);
aWorkerPrivate->AssertIsOnWorkerThread();
}
bool MainThreadRun() override {
MOZ_ASSERT(NS_IsMainThread());
hal::UnregisterNetworkObserver(mProxy);
return true;
}
};
class NotifyRunnable : public WorkerRunnable {
private:
RefPtr<ConnectionProxy> mProxy;
const ConnectionType mConnectionType;
const bool mIsWifi;
const uint32_t mDHCPGateway;
public:
NotifyRunnable(WorkerPrivate* aWorkerPrivate, ConnectionProxy* aProxy,
ConnectionType aType, bool aIsWifi, uint32_t aDHCPGateway)
: WorkerRunnable(aWorkerPrivate),
mProxy(aProxy),
mConnectionType(aType),
mIsWifi(aIsWifi),
mDHCPGateway(aDHCPGateway) {
MOZ_ASSERT(aProxy);
MOZ_ASSERT(NS_IsMainThread());
}
bool WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override {
aWorkerPrivate->AssertIsOnWorkerThread();
mProxy->Update(mConnectionType, mIsWifi, mDHCPGateway);
return true;
}
};
} // anonymous namespace
/* static */
already_AddRefed<ConnectionWorker> ConnectionWorker::Create(
WorkerPrivate* aWorkerPrivate, ErrorResult& aRv) {
bool shouldResistFingerprinting =
aWorkerPrivate->GlobalScope()->ShouldResistFingerprinting(
RFPTarget::Unknown);
RefPtr<ConnectionWorker> c = new ConnectionWorker(shouldResistFingerprinting);
c->mProxy = ConnectionProxy::Create(aWorkerPrivate, c);
if (!c->mProxy) {
aRv.ThrowTypeError("The Worker thread is shutting down.");
return nullptr;
}
hal::NetworkInformation networkInfo;
RefPtr<InitializeRunnable> runnable =
new InitializeRunnable(aWorkerPrivate, c->mProxy, networkInfo);
runnable->Dispatch(Canceling, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
c->Update(static_cast<ConnectionType>(networkInfo.type()),
networkInfo.isWifi(), networkInfo.dhcpGateway(), false);
return c.forget();
}
ConnectionWorker::ConnectionWorker(bool aShouldResistFingerprinting)
: Connection(nullptr, aShouldResistFingerprinting) {
MOZ_ASSERT(IsCurrentThreadRunningWorker());
}
ConnectionWorker::~ConnectionWorker() { Shutdown(); }
void ConnectionWorker::ShutdownInternal() {
MOZ_ASSERT(IsCurrentThreadRunningWorker());
mProxy->Shutdown();
}
void ConnectionProxy::Notify(const hal::NetworkInformation& aNetworkInfo) {
MOZ_ASSERT(NS_IsMainThread());
RefPtr<NotifyRunnable> runnable =
new NotifyRunnable(mWorkerRef->Private(), this,
static_cast<ConnectionType>(aNetworkInfo.type()),
aNetworkInfo.isWifi(), aNetworkInfo.dhcpGateway());
runnable->Dispatch();
}
void ConnectionProxy::Shutdown() {
MOZ_ASSERT(IsCurrentThreadRunningWorker());
// Already shut down.
if (!mConnection) {
return;
}
mConnection = nullptr;
RefPtr<ShutdownRunnable> runnable =
new ShutdownRunnable(mWorkerRef->Private(), this);
ErrorResult rv;
// This runnable _must_ be executed.
runnable->Dispatch(Killing, rv);
if (NS_WARN_IF(rv.Failed())) {
rv.SuppressException();
}
mWorkerRef = nullptr;
}
} // namespace mozilla::dom::network
|
