/* -*- 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_BaseWebSocketChannel_h
#define mozilla_net_BaseWebSocketChannel_h

#include "mozilla/DataMutex.h"
#include "nsIWebSocketChannel.h"
#include "nsIWebSocketListener.h"
#include "nsIProtocolHandler.h"
#include "nsIThread.h"
#include "nsIThreadRetargetableRequest.h"
#include "nsCOMPtr.h"
#include "nsString.h"

namespace mozilla {
namespace net {

const static int32_t kDefaultWSPort = 80;
const static int32_t kDefaultWSSPort = 443;

class BaseWebSocketChannel : public nsIWebSocketChannel,
                             public nsIProtocolHandler,
                             public nsIThreadRetargetableRequest {
 public:
  BaseWebSocketChannel();

  NS_DECL_NSIPROTOCOLHANDLER
  NS_DECL_NSITHREADRETARGETABLEREQUEST

  NS_IMETHOD QueryInterface(const nsIID& uuid, void** result) override = 0;
  NS_IMETHOD_(MozExternalRefCountType) AddRef(void) override = 0;
  NS_IMETHOD_(MozExternalRefCountType) Release(void) override = 0;

  // Partial implementation of nsIWebSocketChannel
  //
  NS_IMETHOD GetOriginalURI(nsIURI** aOriginalURI) override;
  NS_IMETHOD GetURI(nsIURI** aURI) override;
  NS_IMETHOD GetNotificationCallbacks(
      nsIInterfaceRequestor** aNotificationCallbacks) override;
  NS_IMETHOD SetNotificationCallbacks(
      nsIInterfaceRequestor* aNotificationCallbacks) override;
  NS_IMETHOD GetLoadGroup(nsILoadGroup** aLoadGroup) override;
  NS_IMETHOD SetLoadGroup(nsILoadGroup* aLoadGroup) override;
  NS_IMETHOD SetLoadInfo(nsILoadInfo* aLoadInfo) override;
  NS_IMETHOD GetLoadInfo(nsILoadInfo** aLoadInfo) override;
  NS_IMETHOD GetExtensions(nsACString& aExtensions) override;
  NS_IMETHOD GetProtocol(nsACString& aProtocol) override;
  NS_IMETHOD SetProtocol(const nsACString& aProtocol) override;
  NS_IMETHOD GetPingInterval(uint32_t* aSeconds) override;
  NS_IMETHOD SetPingInterval(uint32_t aSeconds) override;
  NS_IMETHOD GetPingTimeout(uint32_t* aSeconds) override;
  NS_IMETHOD SetPingTimeout(uint32_t aSeconds) override;
  NS_IMETHOD InitLoadInfoNative(nsINode* aLoadingNode,
                                nsIPrincipal* aLoadingPrincipal,
                                nsIPrincipal* aTriggeringPrincipal,
                                nsICookieJarSettings* aCookieJarSettings,
                                uint32_t aSecurityFlags,
                                nsContentPolicyType aContentPolicyType,
                                uint32_t aSandboxFlags) override;
  NS_IMETHOD InitLoadInfo(nsINode* aLoadingNode,
                          nsIPrincipal* aLoadingPrincipal,
                          nsIPrincipal* aTriggeringPrincipal,
                          uint32_t aSecurityFlags,
                          nsContentPolicyType aContentPolicyType) override;
  NS_IMETHOD GetSerial(uint32_t* aSerial) override;
  NS_IMETHOD SetSerial(uint32_t aSerial) override;
  NS_IMETHOD SetServerParameters(
      nsITransportProvider* aProvider,
      const nsACString& aNegotiatedExtensions) override;
  NS_IMETHOD GetHttpChannelId(uint64_t* aHttpChannelId) override;

  // Off main thread URI access.
  virtual void GetEffectiveURL(nsAString& aEffectiveURL) const = 0;
  virtual bool IsEncrypted() const = 0;

  already_AddRefed<nsISerialEventTarget> GetTargetThread();
  bool IsOnTargetThread();

  class ListenerAndContextContainer final {
   public:
    NS_INLINE_DECL_THREADSAFE_REFCOUNTING(ListenerAndContextContainer)

    ListenerAndContextContainer(nsIWebSocketListener* aListener,
                                nsISupports* aContext);

    nsCOMPtr<nsIWebSocketListener> mListener;
    nsCOMPtr<nsISupports> mContext;

   private:
    ~ListenerAndContextContainer();
  };

 protected:
  virtual ~BaseWebSocketChannel();
  nsCOMPtr<nsIURI> mOriginalURI;
  nsCOMPtr<nsIURI> mURI;
  RefPtr<ListenerAndContextContainer> mListenerMT;
  nsCOMPtr<nsIInterfaceRequestor> mCallbacks;
  nsCOMPtr<nsILoadGroup> mLoadGroup;
  nsCOMPtr<nsILoadInfo> mLoadInfo;
  nsCOMPtr<nsITransportProvider> mServerTransportProvider;

  // Used to ensure atomicity of mTargetThread.
  // Set before AsyncOpen via RetargetDeliveryTo or in AsyncOpen, never changed
  // after AsyncOpen
  DataMutex<nsCOMPtr<nsISerialEventTarget>> mTargetThread{
      "BaseWebSocketChannel::EventTargetMutex"};

  nsCString mProtocol;
  nsCString mOrigin;

  nsCString mNegotiatedExtensions;

  uint32_t mWasOpened : 1;
  uint32_t mClientSetPingInterval : 1;
  uint32_t mClientSetPingTimeout : 1;

  Atomic<bool> mEncrypted;
  bool mPingForced;
  bool mIsServerSide;

  Atomic<uint32_t> mPingInterval; /* milliseconds */
  uint32_t mPingResponseTimeout;  /* milliseconds */

  uint32_t mSerial;

  uint64_t mHttpChannelId;
};

}  // namespace net
}  // namespace mozilla

#endif  // mozilla_net_BaseWebSocketChannel_h