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-rw-r--r--netwerk/protocol/websocket/WebSocketChannel.h377
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diff --git a/netwerk/protocol/websocket/WebSocketChannel.h b/netwerk/protocol/websocket/WebSocketChannel.h
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+++ b/netwerk/protocol/websocket/WebSocketChannel.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set sw=2 ts=8 et 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_net_WebSocketChannel_h
+#define mozilla_net_WebSocketChannel_h
+
+#include "nsISupports.h"
+#include "nsIInterfaceRequestor.h"
+#include "nsIStreamListener.h"
+#include "nsIAsyncInputStream.h"
+#include "nsIAsyncOutputStream.h"
+#include "nsITimer.h"
+#include "nsIDNSListener.h"
+#include "nsINamed.h"
+#include "nsIObserver.h"
+#include "nsIProtocolProxyCallback.h"
+#include "nsIChannelEventSink.h"
+#include "nsIHttpChannelInternal.h"
+#include "mozilla/net/WebSocketConnectionListener.h"
+#include "mozilla/Mutex.h"
+#include "BaseWebSocketChannel.h"
+
+#include "nsCOMPtr.h"
+#include "nsString.h"
+#include "nsDeque.h"
+#include "mozilla/Atomics.h"
+
+class nsIAsyncVerifyRedirectCallback;
+class nsIDashboardEventNotifier;
+class nsIEventTarget;
+class nsIHttpChannel;
+class nsIRandomGenerator;
+class nsISocketTransport;
+class nsIURI;
+
+namespace mozilla {
+namespace net {
+
+class OutboundMessage;
+class OutboundEnqueuer;
+class nsWSAdmissionManager;
+class PMCECompression;
+class CallOnMessageAvailable;
+class CallOnStop;
+class CallOnServerClose;
+class CallAcknowledge;
+class WebSocketEventService;
+class WebSocketConnectionBase;
+
+[[nodiscard]] extern nsresult CalculateWebSocketHashedSecret(
+ const nsACString& aKey, nsACString& aHash);
+extern void ProcessServerWebSocketExtensions(const nsACString& aExtensions,
+ nsACString& aNegotiatedExtensions);
+
+// Used to enforce "1 connecting websocket per host" rule, and reconnect delays
+enum wsConnectingState {
+ NOT_CONNECTING = 0, // Not yet (or no longer) trying to open connection
+ CONNECTING_QUEUED, // Waiting for other ws to same host to finish opening
+ CONNECTING_DELAYED, // Delayed by "reconnect after failure" algorithm
+ CONNECTING_IN_PROGRESS // Started connection: waiting for result
+};
+
+class WebSocketChannel : public BaseWebSocketChannel,
+ public nsIHttpUpgradeListener,
+ public nsIStreamListener,
+ public nsIInputStreamCallback,
+ public nsIOutputStreamCallback,
+ public nsITimerCallback,
+ public nsIDNSListener,
+ public nsIObserver,
+ public nsIProtocolProxyCallback,
+ public nsIInterfaceRequestor,
+ public nsIChannelEventSink,
+ public nsINamed,
+ public WebSocketConnectionListener {
+ friend class WebSocketFrame;
+
+ public:
+ NS_DECL_THREADSAFE_ISUPPORTS
+ NS_DECL_NSIHTTPUPGRADELISTENER
+ NS_DECL_NSIREQUESTOBSERVER
+ NS_DECL_NSISTREAMLISTENER
+ NS_DECL_NSIINPUTSTREAMCALLBACK
+ NS_DECL_NSIOUTPUTSTREAMCALLBACK
+ NS_DECL_NSITIMERCALLBACK
+ NS_DECL_NSIDNSLISTENER
+ NS_DECL_NSIPROTOCOLPROXYCALLBACK
+ NS_DECL_NSIINTERFACEREQUESTOR
+ NS_DECL_NSICHANNELEVENTSINK
+ NS_DECL_NSIOBSERVER
+ NS_DECL_NSINAMED
+
+ // nsIWebSocketChannel methods BaseWebSocketChannel didn't implement for us
+ //
+ NS_IMETHOD AsyncOpen(nsIURI* aURI, const nsACString& aOrigin,
+ JS::Handle<JS::Value> aOriginAttributes,
+ uint64_t aWindowID, nsIWebSocketListener* aListener,
+ nsISupports* aContext, JSContext* aCx) override;
+ NS_IMETHOD AsyncOpenNative(nsIURI* aURI, const nsACString& aOrigin,
+ const OriginAttributes& aOriginAttributes,
+ uint64_t aWindowID,
+ nsIWebSocketListener* aListener,
+ nsISupports* aContext) override;
+ NS_IMETHOD Close(uint16_t aCode, const nsACString& aReason) override;
+ NS_IMETHOD SendMsg(const nsACString& aMsg) override;
+ NS_IMETHOD SendBinaryMsg(const nsACString& aMsg) override;
+ NS_IMETHOD SendBinaryStream(nsIInputStream* aStream,
+ uint32_t length) override;
+ NS_IMETHOD GetSecurityInfo(nsITransportSecurityInfo** aSecurityInfo) override;
+
+ WebSocketChannel();
+ static void Shutdown();
+
+ // Off main thread URI access.
+ void GetEffectiveURL(nsAString& aEffectiveURL) const override;
+ bool IsEncrypted() const override;
+
+ nsresult OnTransportAvailableInternal();
+ void OnError(nsresult aStatus) override;
+ void OnTCPClosed() override;
+ nsresult OnDataReceived(uint8_t* aData, uint32_t aCount) override;
+
+ const static uint32_t kControlFrameMask = 0x8;
+
+ // First byte of the header
+ const static uint8_t kFinalFragBit = 0x80;
+ const static uint8_t kRsvBitsMask = 0x70;
+ const static uint8_t kRsv1Bit = 0x40;
+ const static uint8_t kRsv2Bit = 0x20;
+ const static uint8_t kRsv3Bit = 0x10;
+ const static uint8_t kOpcodeBitsMask = 0x0F;
+
+ // Second byte of the header
+ const static uint8_t kMaskBit = 0x80;
+ const static uint8_t kPayloadLengthBitsMask = 0x7F;
+
+ protected:
+ ~WebSocketChannel() override;
+
+ private:
+ friend class OutboundEnqueuer;
+ friend class nsWSAdmissionManager;
+ friend class FailDelayManager;
+ friend class CallOnMessageAvailable;
+ friend class CallOnStop;
+ friend class CallOnServerClose;
+ friend class CallAcknowledge;
+
+ // Common send code for binary + text msgs
+ [[nodiscard]] nsresult SendMsgCommon(const nsACString& aMsg, bool isBinary,
+ uint32_t length,
+ nsIInputStream* aStream = nullptr);
+
+ void EnqueueOutgoingMessage(nsDeque<OutboundMessage>& aQueue,
+ OutboundMessage* aMsg);
+ void DoEnqueueOutgoingMessage();
+
+ void PrimeNewOutgoingMessage();
+ void DeleteCurrentOutGoingMessage();
+ void GeneratePong(uint8_t* payload, uint32_t len);
+ void GeneratePing();
+
+ [[nodiscard]] nsresult OnNetworkChanged();
+ [[nodiscard]] nsresult StartPinging();
+
+ void BeginOpen(bool aCalledFromAdmissionManager);
+ void BeginOpenInternal();
+ [[nodiscard]] nsresult HandleExtensions();
+ [[nodiscard]] nsresult SetupRequest();
+ [[nodiscard]] nsresult ApplyForAdmission();
+ [[nodiscard]] nsresult DoAdmissionDNS();
+ [[nodiscard]] nsresult CallStartWebsocketData();
+ [[nodiscard]] nsresult StartWebsocketData();
+ uint16_t ResultToCloseCode(nsresult resultCode);
+ void ReportConnectionTelemetry(nsresult aStatusCode);
+
+ void StopSession(nsresult reason);
+ void DoStopSession(nsresult reason);
+ void AbortSession(nsresult reason);
+ void ReleaseSession();
+ void CleanupConnection();
+ void IncrementSessionCount();
+ void DecrementSessionCount();
+
+ void EnsureHdrOut(uint32_t size);
+
+ static void ApplyMask(uint32_t mask, uint8_t* data, uint64_t len);
+
+ bool IsPersistentFramePtr();
+ [[nodiscard]] nsresult ProcessInput(uint8_t* buffer, uint32_t count);
+ [[nodiscard]] bool UpdateReadBuffer(uint8_t* buffer, uint32_t count,
+ uint32_t accumulatedFragments,
+ uint32_t* available);
+
+ inline void ResetPingTimer() {
+ mPingOutstanding = 0;
+ if (mPingTimer) {
+ if (!mPingInterval) {
+ // The timer was created by forced ping and regular pinging is disabled,
+ // so cancel and null out mPingTimer.
+ mPingTimer->Cancel();
+ mPingTimer = nullptr;
+ } else {
+ mPingTimer->SetDelay(mPingInterval);
+ }
+ }
+ }
+
+ void NotifyOnStart();
+
+ nsCOMPtr<nsIEventTarget> mIOThread;
+ // Set in AsyncOpenNative and AsyncOnChannelRedirect, modified in
+ // DoStopSession on IO thread (.forget()). Probably ok...
+ nsCOMPtr<nsIHttpChannelInternal> mChannel;
+ nsCOMPtr<nsIHttpChannel> mHttpChannel;
+
+ nsCOMPtr<nsICancelable> mCancelable MOZ_GUARDED_BY(mMutex);
+ // Mainthread only
+ nsCOMPtr<nsIAsyncVerifyRedirectCallback> mRedirectCallback;
+ // Set on Mainthread during AsyncOpen, used on IO thread and Mainthread
+ nsCOMPtr<nsIRandomGenerator> mRandomGenerator;
+
+ nsCString mHashedSecret; // MainThread only
+
+ // Used as key for connection managment: Initially set to hostname from URI,
+ // then to IP address (unless we're leaving DNS resolution to a proxy server)
+ // MainThread only
+ nsCString mAddress;
+ int32_t mPort; // WS server port
+ // Secondary key for the connection queue. Used by nsWSAdmissionManager.
+ nsCString mOriginSuffix; // MainThread only
+
+ // Used for off main thread access to the URI string.
+ // Set on MainThread in AsyncOpenNative, used on TargetThread and IO thread
+ nsCString mHost;
+ nsString mEffectiveURL;
+
+ // Set on MainThread before multithread use, used on IO thread, cleared on
+ // IOThread
+ nsCOMPtr<nsISocketTransport> mTransport;
+ nsCOMPtr<nsIAsyncInputStream> mSocketIn;
+ nsCOMPtr<nsIAsyncOutputStream> mSocketOut;
+ RefPtr<WebSocketConnectionBase> mConnection;
+
+ // Only used on IO Thread (accessed when known-to-be-null in DoStopSession
+ // on MainThread before mDataStarted)
+ nsCOMPtr<nsITimer> mCloseTimer;
+ // set in AsyncOpenInternal on MainThread, used on IO thread.
+ // No multithread use before it's set, no changes after that.
+ uint32_t mCloseTimeout; /* milliseconds */
+
+ nsCOMPtr<nsITimer> mOpenTimer; /* Mainthread only */
+ uint32_t mOpenTimeout; /* milliseconds, MainThread only */
+ wsConnectingState mConnecting; /* 0 if not connecting, MainThread only */
+ // Set on MainThread, deleted on MainThread, used on MainThread or
+ // IO Thread (in DoStopSession). Mutex required to access off-main-thread.
+ nsCOMPtr<nsITimer> mReconnectDelayTimer MOZ_GUARDED_BY(mMutex);
+
+ // Only touched on IOThread (DoStopSession reads it on MainThread if
+ // we haven't connected yet (mDataStarted==false), and it's always null
+ // until mDataStarted=true)
+ nsCOMPtr<nsITimer> mPingTimer;
+
+ // Created in DoStopSession on IO thread (mDataStarted=true), accessed
+ // only from IO Thread
+ nsCOMPtr<nsITimer> mLingeringCloseTimer;
+ const static int32_t kLingeringCloseTimeout = 1000;
+ const static int32_t kLingeringCloseThreshold = 50;
+
+ RefPtr<WebSocketEventService> mService; // effectively const
+
+ int32_t
+ mMaxConcurrentConnections; // only used in AsyncOpenNative on MainThread
+
+ // Set on MainThread in AsyncOpenNative; then used on IO thread
+ uint64_t mInnerWindowID;
+
+ // following members are accessed only on the main thread
+ uint32_t mGotUpgradeOK : 1;
+ uint32_t mRecvdHttpUpgradeTransport : 1;
+ uint32_t mAutoFollowRedirects : 1;
+ uint32_t mAllowPMCE : 1;
+ uint32_t : 0; // ensure these aren't mixed with the next set
+
+ // following members are accessed only on the IO thread
+ uint32_t mPingOutstanding : 1;
+ uint32_t mReleaseOnTransmit : 1;
+ uint32_t : 0;
+
+ Atomic<bool> mDataStarted;
+ // All changes to mRequestedClose happen under mutex, but since it's atomic,
+ // it can be read anywhere without a lock
+ Atomic<bool> mRequestedClose;
+ // mServer/ClientClosed are only modified on IOThread
+ Atomic<bool> mClientClosed;
+ Atomic<bool> mServerClosed;
+ // All changes to mStopped happen under mutex, but since it's atomic, it
+ // can be read anywhere without a lock
+ Atomic<bool> mStopped;
+ Atomic<bool> mCalledOnStop;
+ Atomic<bool> mTCPClosed;
+ Atomic<bool> mOpenedHttpChannel;
+ Atomic<bool> mIncrementedSessionCount;
+ Atomic<bool> mDecrementedSessionCount;
+
+ int32_t mMaxMessageSize; // set on MainThread in AsyncOpenNative, read on IO
+ // thread
+ // Set on IOThread, or on MainThread before mDataStarted. Used on IO Thread
+ // (after mDataStarted)
+ nsresult mStopOnClose;
+ uint16_t mServerCloseCode; // only used on IO thread
+ nsCString mServerCloseReason; // only used on IO thread
+ uint16_t mScriptCloseCode MOZ_GUARDED_BY(mMutex);
+ nsCString mScriptCloseReason MOZ_GUARDED_BY(mMutex);
+
+ // These are for the read buffers
+ const static uint32_t kIncomingBufferInitialSize = 16 * 1024;
+ // We're ok with keeping a buffer this size or smaller around for the life of
+ // the websocket. If a particular message needs bigger than this we'll
+ // increase the buffer temporarily, then drop back down to this size.
+ const static uint32_t kIncomingBufferStableSize = 128 * 1024;
+
+ // Set at creation, used/modified only on IO thread
+ uint8_t* mFramePtr;
+ uint8_t* mBuffer;
+ uint8_t mFragmentOpcode;
+ uint32_t mFragmentAccumulator;
+ uint32_t mBuffered;
+ uint32_t mBufferSize;
+
+ // These are for the send buffers
+ const static int32_t kCopyBreak = 1000;
+
+ // Only used on IO thread
+ OutboundMessage* mCurrentOut;
+ uint32_t mCurrentOutSent;
+ nsDeque<OutboundMessage> mOutgoingMessages;
+ nsDeque<OutboundMessage> mOutgoingPingMessages;
+ nsDeque<OutboundMessage> mOutgoingPongMessages;
+ uint32_t mHdrOutToSend;
+ uint8_t* mHdrOut;
+ uint8_t mOutHeader[kCopyBreak + 16]{0};
+
+ // Set on MainThread in OnStartRequest (before mDataStarted), or in
+ // HandleExtensions() or OnTransportAvailableInternal(),used on IO Thread
+ // (after mDataStarted), cleared in DoStopSession on IOThread or on
+ // MainThread (if mDataStarted == false).
+ Mutex mCompressorMutex;
+ UniquePtr<PMCECompression> mPMCECompressor MOZ_GUARDED_BY(mCompressorMutex);
+
+ // Used by EnsureHdrOut, which isn't called anywhere
+ uint32_t mDynamicOutputSize;
+ uint8_t* mDynamicOutput;
+ // Set on creation and AsyncOpen, read on both threads
+ Atomic<bool> mPrivateBrowsing;
+
+ nsCOMPtr<nsIDashboardEventNotifier>
+ mConnectionLogService; // effectively const
+
+ mozilla::Mutex mMutex;
+};
+
+class WebSocketSSLChannel : public WebSocketChannel {
+ public:
+ WebSocketSSLChannel() { BaseWebSocketChannel::mEncrypted = true; }
+
+ protected:
+ virtual ~WebSocketSSLChannel() = default;
+};
+
+} // namespace net
+} // namespace mozilla
+
+#endif // mozilla_net_WebSocketChannel_h