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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/. */
#ifndef mozilla_net_SocketProcessHost_h
#define mozilla_net_SocketProcessHost_h
#include "mozilla/Maybe.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/ipc/GeckoChildProcessHost.h"
#include "mozilla/MemoryReportingProcess.h"
#include "mozilla/ipc/TaskFactory.h"
namespace mozilla {
#if defined(XP_LINUX) && defined(MOZ_SANDBOX)
class SandboxBroker;
#endif
namespace net {
class SocketProcessParent;
// SocketProcessHost is the "parent process" container for a subprocess handle
// and IPC connection. It owns the parent process IPDL actor, which in this
// case, is a SocketProcessParent.
// SocketProcessHost is allocated and managed by nsIOService in parent process.
class SocketProcessHost final : public mozilla::ipc::GeckoChildProcessHost {
friend class SocketProcessParent;
public:
class Listener {
public:
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(Listener)
// Called when the process of launching the process is complete.
virtual void OnProcessLaunchComplete(SocketProcessHost* aHost,
bool aSucceeded) = 0;
// Called when the channel is closed but Shutdown() is not invoked.
virtual void OnProcessUnexpectedShutdown(SocketProcessHost* aHost) = 0;
protected:
virtual ~Listener() = default;
};
explicit SocketProcessHost(Listener* listener);
// Launch the socket process asynchronously.
// The OnProcessLaunchComplete listener callback will be invoked
// either when a connection has been established, or if a connection
// could not be established due to an asynchronous error.
bool Launch();
// Inform the socket process that it should clean up its resources and shut
// down. This initiates an asynchronous shutdown sequence. After this method
// returns, it is safe for the caller to forget its pointer to the
// SocketProcessHost.
void Shutdown();
// Return the actor for the top-level actor of the process. Return null if
// the process is not connected.
SocketProcessParent* GetActor() const {
MOZ_ASSERT(NS_IsMainThread());
return mSocketProcessParent.get();
}
bool IsConnected() const {
MOZ_ASSERT(NS_IsMainThread());
return !!mSocketProcessParent;
}
// Called on the IO thread.
void OnChannelConnected(base::ProcessId peer_pid) override;
void OnChannelError() override;
#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
// Return the sandbox type to be used with this process type.
static MacSandboxType GetMacSandboxType();
#endif
private:
~SocketProcessHost();
// Called on the main thread.
void OnChannelConnectedTask();
void OnChannelErrorTask();
// Called on the main thread after a connection has been established.
void InitAfterConnect(bool aSucceeded);
// Called on the main thread when the mSocketParent actor is shutting down.
void OnChannelClosed();
void DestroyProcess();
#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
static bool sLaunchWithMacSandbox;
// Sandbox the Socket process at launch for all instances
bool IsMacSandboxLaunchEnabled() override { return sLaunchWithMacSandbox; }
// Override so we can turn on Socket process-specific sandbox logging
bool FillMacSandboxInfo(MacSandboxInfo& aInfo) override;
#endif
DISALLOW_COPY_AND_ASSIGN(SocketProcessHost);
RefPtr<Listener> mListener;
mozilla::Maybe<mozilla::ipc::TaskFactory<SocketProcessHost>> mTaskFactory;
enum class LaunchPhase { Unlaunched, Waiting, Complete };
LaunchPhase mLaunchPhase;
UniquePtr<SocketProcessParent> mSocketProcessParent;
// mShutdownRequested is set to true only when Shutdown() is called.
// If mShutdownRequested is false and the IPC channel is closed,
// OnProcessUnexpectedShutdown will be invoked.
bool mShutdownRequested;
bool mChannelClosed;
#if defined(XP_LINUX) && defined(MOZ_SANDBOX)
UniquePtr<SandboxBroker> mSandboxBroker;
#endif
};
class SocketProcessMemoryReporter : public MemoryReportingProcess {
public:
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(SocketProcessMemoryReporter, override)
SocketProcessMemoryReporter() = default;
bool IsAlive() const override;
bool SendRequestMemoryReport(
const uint32_t& aGeneration, const bool& aAnonymize,
const bool& aMinimizeMemoryUsage,
const Maybe<mozilla::ipc::FileDescriptor>& aDMDFile) override;
int32_t Pid() const override;
protected:
virtual ~SocketProcessMemoryReporter() = default;
};
} // namespace net
} // namespace mozilla
#endif // mozilla_net_SocketProcessHost_h
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