1 files changed, 152 insertions, 0 deletions
diff --git a/netwerk/ipc/SocketProcessHost.h b/netwerk/ipc/SocketProcessHost.h
new file mode 100644
index 0000000000..1993d796be
--- /dev/null
+++ b/netwerk/ipc/SocketProcessHost.h
@@ -0,0 +1,152 @@
+/* -*- 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