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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set et ts=4 sts=2 sw=2 cin: */
/* 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
 * 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 nsFtpControlConnection_h___
#define nsFtpControlConnection_h___


#include "nsCOMPtr.h"

#include "nsISocketTransport.h"
#include "nsIAsyncInputStream.h"
#include "nsString.h"
#include "nsString.h"
#include "mozilla/Attributes.h"

class nsIOutputStream;
class nsIProxyInfo;
class nsITransportEventSink;
class nsITransportEventSink;

class nsFtpControlConnectionListener : public nsISupports {
 public:
  /**
   * Called when a chunk of data arrives on the control connection.
   * Called when a chunk of data arrives on the control connection.
   * @param data
   *        The new data or null if an error occurred.
   * @param dataLen
   *        The data length in bytes.
   */
  virtual void OnControlDataAvailable(const char* data, uint32_t dataLen) = 0;

  /**
   * Called when an error occurs on the control connection.
   * Called when an error occurs on the control connection.
   * @param status
   *        A failure code providing more info about the error.
   */
  virtual void OnControlError(nsresult status) = 0;
};
};

class nsFtpControlConnection final : public nsIInputStreamCallback {
  ~nsFtpControlConnection();

 public:
 public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIINPUTSTREAMCALLBACK

  nsFtpControlConnection(const nsACString& host, uint32_t port);


  nsresult Connect(nsIProxyInfo* proxyInfo, nsITransportEventSink* eventSink);
  nsresult Disconnect(nsresult status);
  nsresult Write(const nsACString& command);

  bool IsAlive();
  bool IsAlive();

  nsITransport* Transport() { return mSocket; }

  /**
   * Call this function to be notified asynchronously when there is data
   * Call this function to be notified asynchronously when there is data
   * available for the socket.  The listener passed to this method replaces
   * any existing listener, and the listener can be null to disconnect the
   * previous listener.
   */
  nsresult WaitData(nsFtpControlConnectionListener* listener);

  uint32_t mServerType;  // what kind of server is it.
  nsString mPassword;
  int32_t mSuspendedWrite;
  int32_t mSuspendedWrite;
  nsCString mPwd;
  uint32_t mSessionId;
  bool mUseUTF8;

 private:
 private:
  nsCString mHost;
  uint32_t mPort;

  nsCOMPtr<nsISocketTransport> mSocket;
  nsCOMPtr<nsIOutputStream> mSocketOutput;
  nsCOMPtr<nsIOutputStream> mSocketOutput;
  nsCOMPtr<nsIAsyncInputStream> mSocketInput;

  RefPtr<nsFtpControlConnectionListener> mListener;
};


#endif