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/* -*- 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/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 =
do_GetService(NS_SOCKETTRANSPORTSERVICE_CONTRACTID, &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
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