1 files changed, 247 insertions, 0 deletions
diff --git a/dom/network/TCPSocket.h b/dom/network/TCPSocket.h
new file mode 100644
index 0000000000..a6d807ef54
--- /dev/null
+++ b/dom/network/TCPSocket.h
@@ -0,0 +1,247 @@
+/* -*- 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/. */
+
+#ifndef mozilla_dom_TCPSocket_h
+#define mozilla_dom_TCPSocket_h
+
+#include "mozilla/dom/TCPSocketBinding.h"
+#include "mozilla/dom/TypedArray.h"
+#include "mozilla/DOMEventTargetHelper.h"
+#include "nsIProxyInfo.h"
+#include "nsITransport.h"
+#include "nsIStreamListener.h"
+#include "nsIAsyncInputStream.h"
+#include "nsISupportsImpl.h"
+#include "nsIObserver.h"
+#include "nsWeakReference.h"
+#include "nsITCPSocketCallback.h"
+#include "nsIProtocolProxyCallback.h"
+#include "js/RootingAPI.h"
+
+class nsISocketTransport;
+class nsIInputStreamPump;
+class nsIScriptableInputStream;
+class nsIBinaryInputStream;
+class nsIMultiplexInputStream;
+class nsIAsyncStreamCopier;
+class nsIInputStream;
+class nsINetworkInfo;
+
+namespace mozilla {
+class ErrorResult;
+namespace dom {
+
+struct ServerSocketOptions;
+class TCPServerSocket;
+class TCPSocketChild;
+class TCPSocketParent;
+
+// This interface is only used for legacy navigator.mozTCPSocket API
+// compatibility.
+class LegacyMozTCPSocket : public nsISupports {
+ public:
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_CLASS(LegacyMozTCPSocket)
+
+  explicit LegacyMozTCPSocket(nsPIDOMWindowInner* aWindow);
+
+  already_AddRefed<TCPServerSocket> Listen(uint16_t aPort,
+                                           const ServerSocketOptions& aOptions,
+                                           uint16_t aBacklog, ErrorResult& aRv);
+
+  already_AddRefed<TCPSocket> Open(const nsAString& aHost, uint16_t aPort,
+                                   const SocketOptions& aOptions,
+                                   ErrorResult& aRv);
+
+  bool WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto,
+                  JS::MutableHandle<JSObject*> aReflector);
+
+ private:
+  virtual ~LegacyMozTCPSocket();
+
+  nsCOMPtr<nsIGlobalObject> mGlobal;
+};
+
+class TCPSocket final : public DOMEventTargetHelper,
+                        public nsIStreamListener,
+                        public nsITransportEventSink,
+                        public nsIInputStreamCallback,
+                        public nsIObserver,
+                        public nsSupportsWeakReference,
+                        public nsITCPSocketCallback,
+                        public nsIProtocolProxyCallback {
+ public:
+  TCPSocket(nsIGlobalObject* aGlobal, const nsAString& aHost, uint16_t aPort,
+            bool aSsl, bool aUseArrayBuffers);
+
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(TCPSocket,
+                                                         DOMEventTargetHelper)
+  NS_DECL_NSIREQUESTOBSERVER
+  NS_DECL_NSISTREAMLISTENER
+  NS_DECL_NSITRANSPORTEVENTSINK
+  NS_DECL_NSIINPUTSTREAMCALLBACK
+  NS_DECL_NSIOBSERVER
+  NS_DECL_NSITCPSOCKETCALLBACK
+  NS_DECL_NSIPROTOCOLPROXYCALLBACK
+
+  virtual JSObject* WrapObject(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) override;
+
+  static bool ShouldTCPSocketExist(JSContext* aCx, JSObject* aGlobal);
+
+  nsISocketTransport* GetTransport() const { return mTransport.get(); }
+
+  void GetHost(nsAString& aHost);
+  uint32_t Port() const;
+  bool Ssl() const;
+  uint64_t BufferedAmount() const { return mBufferedAmount; }
+  void Suspend();
+  void Resume(ErrorResult& aRv);
+  void Close();
+  void CloseImmediately();
+  bool Send(const nsACString& aData, ErrorResult& aRv);
+  bool Send(const ArrayBuffer& aData, uint32_t aByteOffset,
+            const Optional<uint32_t>& aByteLength, ErrorResult& aRv);
+  TCPReadyState ReadyState();
+  TCPSocketBinaryType BinaryType() const;
+  void UpgradeToSecure(ErrorResult& aRv);
+
+  static already_AddRefed<TCPSocket> Constructor(const GlobalObject& aGlobal,
+                                                 const nsAString& aHost,
+                                                 uint16_t aPort,
+                                                 const SocketOptions& aOptions,
+                                                 ErrorResult& aRv);
+
+  // Create a TCPSocket object from an existing low-level socket connection.
+  // Used by the TCPServerSocket implementation when a new connection is
+  // accepted.
+  static already_AddRefed<TCPSocket> CreateAcceptedSocket(
+      nsIGlobalObject* aGlobal, nsISocketTransport* aTransport,
+      bool aUseArrayBuffers);
+  // Create a TCPSocket object from an existing child-side IPC actor.
+  // Used by the TCPServerSocketChild implementation when a new connection is
+  // accepted.
+  static already_AddRefed<TCPSocket> CreateAcceptedSocket(
+      nsIGlobalObject* aGlobal, TCPSocketChild* aBridge, bool aUseArrayBuffers);
+
+  // Initialize this socket's associated IPC actor in the parent process.
+  void SetSocketBridgeParent(TCPSocketParent* aBridgeParent);
+
+  static bool SocketEnabled();
+
+  IMPL_EVENT_HANDLER(open);
+  IMPL_EVENT_HANDLER(drain);
+  IMPL_EVENT_HANDLER(data);
+  IMPL_EVENT_HANDLER(error);
+  IMPL_EVENT_HANDLER(close);
+
+  nsresult Init(nsIProxyInfo* aProxyInfo);
+
+  // Inform this socket that a buffered send() has completed sending.
+  void NotifyCopyComplete(nsresult aStatus);
+
+  // Initialize this socket from a low-level connection that hasn't connected
+  // yet (called from RecvOpenBind() in TCPSocketParent).
+  nsresult InitWithUnconnectedTransport(nsISocketTransport* aTransport);
+
+ private:
+  ~TCPSocket();
+
+  // Initialize this socket with an existing IPC actor.
+  void InitWithSocketChild(TCPSocketChild* aSocketBridge);
+  // Initialize this socket from an existing low-level connection.
+  nsresult InitWithTransport(nsISocketTransport* aTransport);
+  // Initialize the input/output streams for this socket object.
+  nsresult CreateStream();
+  // Initialize the asynchronous read operation from this socket's input stream.
+  nsresult CreateInputStreamPump();
+  // Send the contents of the provided input stream, which is assumed to be the
+  // given length for reporting and buffering purposes.
+  bool Send(nsIInputStream* aStream, uint32_t aByteLength);
+  // Begin an asynchronous copy operation if one is not already in progress.
+  nsresult EnsureCopying();
+  // Re-calculate buffered amount.
+  void CalculateBufferedAmount();
+  // Helper function, should be called by ActivateTLS(), only.
+  void ActivateTLSHelper();
+  // Enable TLS on this socket, dispatch to STSThread if necessary.
+  void ActivateTLS();
+  // Dispatch an error event if necessary, then dispatch a "close" event.
+  nsresult MaybeReportErrorAndCloseIfOpen(nsresult status);
+
+  // Helper for FireDataStringEvent/FireDataArrayEvent.
+  nsresult FireDataEvent(JSContext* aCx, const nsAString& aType,
+                         JS::Handle<JS::Value> aData);
+  // Helper for Close/CloseImmediately
+  void CloseHelper(bool waitForUnsentData);
+
+  nsresult ResolveProxy();
+
+  TCPReadyState mReadyState;
+  // Whether to use strings or array buffers for the "data" event.
+  bool mUseArrayBuffers;
+  nsString mHost;
+  uint16_t mPort;
+  // Whether this socket is using a secure transport.
+  bool mSsl;
+
+  // The associated IPC actor in a child process.
+  RefPtr<TCPSocketChild> mSocketBridgeChild;
+  // The associated IPC actor in a parent process.
+  RefPtr<TCPSocketParent> mSocketBridgeParent;
+
+  // Raw socket streams
+  nsCOMPtr<nsISocketTransport> mTransport;
+  nsCOMPtr<nsIInputStream> mSocketInputStream;
+  nsCOMPtr<nsIOutputStream> mSocketOutputStream;
+
+  nsCOMPtr<nsICancelable> mProxyRequest;
+
+  // Input stream machinery
+  nsCOMPtr<nsIInputStreamPump> mInputStreamPump;
+  nsCOMPtr<nsIScriptableInputStream> mInputStreamScriptable;
+  nsCOMPtr<nsIBinaryInputStream> mInputStreamBinary;
+
+  // Is there an async copy operation in progress?
+  bool mAsyncCopierActive;
+  // True if the buffer is full and a "drain" event is expected by the client.
+  bool mWaitingForDrain;
+
+  // The id of the window that created this socket.
+  uint64_t mInnerWindowID;
+
+  // The current number of buffered bytes. Only used in content processes when
+  // IPC is enabled.
+  uint64_t mBufferedAmount;
+
+  // The number of times this socket has had `Suspend` called without a
+  // corresponding `Resume`.
+  uint32_t mSuspendCount;
+
+  // The current sequence number (ie. number of send operations) that have been
+  // processed. This is used in the IPC scenario by the child process to filter
+  // out outdated notifications about the amount of buffered data present in the
+  // parent process.
+  uint32_t mTrackingNumber;
+
+  // True if this socket has been upgraded to secure after the initial
+  // connection, but the actual upgrade is waiting for an in-progress copy
+  // operation to complete.
+  bool mWaitingForStartTLS;
+  // The buffered data awaiting the TLS upgrade to finish.
+  nsTArray<nsCOMPtr<nsIInputStream>> mPendingDataAfterStartTLS;
+
+  // The data to be sent.
+  nsTArray<nsCOMPtr<nsIInputStream>> mPendingData;
+
+  bool mObserversActive;
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // mozilla_dom_TCPSocket_h