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
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "SocketProcessBridgeChild.h"
#include "SocketProcessLogging.h"
#include "mozilla/AppShutdown.h"
#include "mozilla/Components.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/ipc/BackgroundChild.h"
#include "mozilla/ipc/Endpoint.h"
#include "mozilla/net/NeckoChild.h"
#include "nsIObserverService.h"
#include "nsThreadUtils.h"
#include "mozilla/Preferences.h"
#include "mozilla/StaticPrefs_network.h"
namespace mozilla {
using dom::ContentChild;
namespace net {
StaticRefPtr<SocketProcessBridgeChild>
SocketProcessBridgeChild::sSocketProcessBridgeChild;
NS_IMPL_ISUPPORTS(SocketProcessBridgeChild, nsIObserver)
// static
bool SocketProcessBridgeChild::Create(
Endpoint<PSocketProcessBridgeChild>&& aEndpoint) {
MOZ_ASSERT(NS_IsMainThread());
sSocketProcessBridgeChild = new SocketProcessBridgeChild();
if (!aEndpoint.Bind(sSocketProcessBridgeChild)) {
MOZ_ASSERT(false, "Bind failed!");
sSocketProcessBridgeChild = nullptr;
return false;
}
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
if (os) {
os->AddObserver(sSocketProcessBridgeChild, "content-child-shutdown", false);
}
sSocketProcessBridgeChild->mSocketProcessPid = aEndpoint.OtherPid();
return true;
}
// static
already_AddRefed<SocketProcessBridgeChild>
SocketProcessBridgeChild::GetSingleton() {
RefPtr<SocketProcessBridgeChild> child = sSocketProcessBridgeChild;
return child.forget();
}
// static
RefPtr<SocketProcessBridgeChild::GetPromise>
SocketProcessBridgeChild::GetSocketProcessBridge() {
MOZ_ASSERT(NS_IsMainThread());
if (!StaticPrefs::network_process_enabled()) {
return GetPromise::CreateAndReject(nsCString("Socket process disabled!"),
__func__);
}
if (!gNeckoChild) {
return GetPromise::CreateAndReject(nsCString("No NeckoChild!"), __func__);
}
// ContentChild is shutting down, we should not try to create
// SocketProcessBridgeChild.
ContentChild* content = ContentChild::GetSingleton();
if (!content || content->IsShuttingDown()) {
return GetPromise::CreateAndReject(
nsCString("ContentChild is shutting down."), __func__);
}
if (sSocketProcessBridgeChild) {
return GetPromise::CreateAndResolve(sSocketProcessBridgeChild, __func__);
}
return gNeckoChild->SendInitSocketProcessBridge()->Then(
GetMainThreadSerialEventTarget(), __func__,
[](NeckoChild::InitSocketProcessBridgePromise::ResolveOrRejectValue&&
aResult) {
ContentChild* content = ContentChild::GetSingleton();
if (!content || content->IsShuttingDown()) {
return GetPromise::CreateAndReject(
nsCString("ContentChild is shutting down."), __func__);
}
if (!sSocketProcessBridgeChild) {
if (aResult.IsReject()) {
return GetPromise::CreateAndReject(
nsCString("SendInitSocketProcessBridge failed"), __func__);
}
if (!aResult.ResolveValue().IsValid()) {
return GetPromise::CreateAndReject(
nsCString(
"SendInitSocketProcessBridge resolved with an invalid "
"endpoint!"),
__func__);
}
if (!SocketProcessBridgeChild::Create(
std::move(aResult.ResolveValue()))) {
return GetPromise::CreateAndReject(
nsCString("SendInitSocketProcessBridge resolved with a valid "
"endpoint, "
"but SocketProcessBridgeChild::Create failed!"),
__func__);
}
}
return GetPromise::CreateAndResolve(sSocketProcessBridgeChild,
__func__);
});
}
SocketProcessBridgeChild::SocketProcessBridgeChild() : mShuttingDown(false) {
LOG(("CONSTRUCT SocketProcessBridgeChild::SocketProcessBridgeChild\n"));
}
SocketProcessBridgeChild::~SocketProcessBridgeChild() {
LOG(("DESTRUCT SocketProcessBridgeChild::SocketProcessBridgeChild\n"));
}
mozilla::ipc::IPCResult SocketProcessBridgeChild::RecvTest() {
LOG(("SocketProcessBridgeChild::RecvTest\n"));
return IPC_OK();
}
void SocketProcessBridgeChild::ActorDestroy(ActorDestroyReason aWhy) {
LOG(("SocketProcessBridgeChild::ActorDestroy\n"));
if (AbnormalShutdown == aWhy) {
if (gNeckoChild &&
!AppShutdown::IsInOrBeyond(ShutdownPhase::AppShutdownConfirmed)) {
// Let NeckoParent know that the socket process connections must be
// rebuilt.
gNeckoChild->SendResetSocketProcessBridge();
}
nsresult res;
nsCOMPtr<nsISerialEventTarget> mSTSThread;
mSTSThread = mozilla::components::SocketTransport::Service(&res);
if (NS_SUCCEEDED(res) && mSTSThread) {
// This must be called off the main thread. If we don't make this call
// ipc::BackgroundChild::GetOrCreateSocketActorForCurrentThread() will
// return the previous actor that is no longer able to send. This causes
// rebuilding the socket process connections to fail.
MOZ_ALWAYS_SUCCEEDS(mSTSThread->Dispatch(NS_NewRunnableFunction(
"net::SocketProcessBridgeChild::ActorDestroy",
[]() { ipc::BackgroundChild::CloseForCurrentThread(); })));
}
}
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
if (os) {
os->RemoveObserver(this, "content-child-shutdown");
}
GetCurrentSerialEventTarget()->Dispatch(
NewRunnableMethod("net::SocketProcessBridgeChild::DeferredDestroy", this,
&SocketProcessBridgeChild::DeferredDestroy));
mShuttingDown = true;
}
NS_IMETHODIMP
SocketProcessBridgeChild::Observe(nsISupports* aSubject, const char* aTopic,
const char16_t* aData) {
if (!strcmp(aTopic, "content-child-shutdown")) {
PSocketProcessBridgeChild::Close();
}
return NS_OK;
}
void SocketProcessBridgeChild::DeferredDestroy() {
MOZ_ASSERT(NS_IsMainThread());
sSocketProcessBridgeChild = nullptr;
}
} // namespace net
} // namespace mozilla
|
