text: /****************************************************************************
  **
  ** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
  ** Contact: http://www.qt-project.org/legal
  **
  ** This file is part of the QtNetwork module of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:LGPL$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and Digia.  For licensing terms and
  ** conditions see http://qt.digia.com/licensing.  For further information
  ** use the contact form at http://qt.digia.com/contact-us.
  **
  ** GNU Lesser General Public License Usage
  ** Alternatively, this file may be used under the terms of the GNU Lesser
  ** General Public License version 2.1 as published by the Free Software
  ** Foundation and appearing in the file LICENSE.LGPL included in the
  ** packaging of this file.  Please review the following information to
  ** ensure the GNU Lesser General Public License version 2.1 requirements
  ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
  **
  ** In addition, as a special exception, Digia gives you certain additional
  ** rights.  These rights are described in the Digia Qt LGPL Exception
  ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
  **
  ** GNU General Public License Usage
  ** Alternatively, this file may be used under the terms of the GNU
  ** General Public License version 3.0 as published by the Free Software
  ** Foundation and appearing in the file LICENSE.GPL included in the
  ** packaging of this file.  Please review the following information to
  ** ensure the GNU General Public License version 3.0 requirements will be
  ** met: http://www.gnu.org/copyleft/gpl.html.
  **
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/
  
  #ifndef QHTTP_H
  #define QHTTP_H
  
  #include <QtCore/qobject.h>
  #include <QtCore/qstringlist.h>
  #include <QtCore/qmap.h>
  #include <QtCore/qpair.h>
  #include <QtCore/qscopedpointer.h>
  
  QT_BEGIN_HEADER
  
  class QTcpSocket;
  class QTimerEvent;
  class QIODevice;
  class QAuthenticator;
  class QNetworkProxy;
  class QSslError;
  
  class QHttpPrivate;
  
  class QHttpHeaderPrivate;
  class QHttpHeader
  {
  public:
      QHttpHeader();
      QHttpHeader(const QHttpHeader &header);
      QHttpHeader(const QString &str);
      virtual ~QHttpHeader();
  
      QHttpHeader &operator=(const QHttpHeader &h);
  
      void setValue(const QString &key, const QString &value);
      void setValues(const QList<QPair<QString, QString> > &values);
      void addValue(const QString &key, const QString &value);
      QList<QPair<QString, QString> > values() const;
      bool hasKey(const QString &key) const;
      QStringList keys() const;
      QString value(const QString &key) const;
      QStringList allValues(const QString &key) const;
      void removeValue(const QString &key);
      void removeAllValues(const QString &key);
  
      // ### Qt 5: change to qint64
      bool hasContentLength() const;
      uint contentLength() const;
      void setContentLength(int len);
  
      bool hasContentType() const;
      QString contentType() const;
      void setContentType(const QString &type);
  
      virtual QString toString() const;
      bool isValid() const;
  
      virtual int majorVersion() const = 0;
      virtual int minorVersion() const = 0;
  
  protected:
      virtual bool parseLine(const QString &line, int number);
      bool parse(const QString &str);
      void setValid(bool);
  
      QHttpHeader(QHttpHeaderPrivate &dd, const QString &str = QString());
      QHttpHeader(QHttpHeaderPrivate &dd, const QHttpHeader &header);
      QScopedPointer<QHttpHeaderPrivate> d_ptr;
  
  private:
      Q_DECLARE_PRIVATE(QHttpHeader)
  };
  
  class QHttpResponseHeaderPrivate;
  class QHttpResponseHeader : public QHttpHeader
  {
  public:
      QHttpResponseHeader();
      QHttpResponseHeader(const QHttpResponseHeader &header);
      QHttpResponseHeader(const QString &str);
      QHttpResponseHeader(int code, const QString &text = QString(), int majorVer = 1, int minorVer = 1);
      QHttpResponseHeader &operator=(const QHttpResponseHeader &header);
  
      void setStatusLine(int code, const QString &text = QString(), int majorVer = 1, int minorVer = 1);
  
      int statusCode() const;
      QString reasonPhrase() const;
  
      int majorVersion() const;
      int minorVersion() const;
  
      QString toString() const;
  
  protected:
      bool parseLine(const QString &line, int number);
  
  private:
      Q_DECLARE_PRIVATE(QHttpResponseHeader)
      friend class QHttpPrivate;
  };
  
  class QHttpRequestHeaderPrivate;
  class QHttpRequestHeader : public QHttpHeader
  {
  public:
      QHttpRequestHeader();
      QHttpRequestHeader(const QString &method, const QString &path, int majorVer = 1, int minorVer = 1);
      QHttpRequestHeader(const QHttpRequestHeader &header);
      QHttpRequestHeader(const QString &str);
      QHttpRequestHeader &operator=(const QHttpRequestHeader &header);
  
      void setRequest(const QString &method, const QString &path, int majorVer = 1, int minorVer = 1);
  
      QString method() const;
      QString path() const;
  
      int majorVersion() const;
      int minorVersion() const;
  
      QString toString() const;
  
  protected:
      bool parseLine(const QString &line, int number);
  
  private:
      Q_DECLARE_PRIVATE(QHttpRequestHeader)
  };
  
  class QHttp : public QObject
  {
      Q_OBJECT
  
  public:
      enum ConnectionMode {
          ConnectionModeHttp,
          ConnectionModeHttps
      };
  
      explicit QHttp(QObject *parent = 0);
      QHttp(const QString &hostname, quint16 port = 80, QObject *parent = 0);
      QHttp(const QString &hostname, ConnectionMode mode, quint16 port = 0, QObject *parent = 0);
      virtual ~QHttp();
  
      enum State {
          Unconnected,
          HostLookup,
          Connecting,
          Sending,
          Reading,
          Connected,
          Closing
      };
      enum Error {
          NoError,
          UnknownError,
          HostNotFound,
          ConnectionRefused,
          UnexpectedClose,
          InvalidResponseHeader,
          WrongContentLength,
          Aborted,
          AuthenticationRequiredError,
          ProxyAuthenticationRequiredError
      };
  
      int setHost(const QString &hostname, quint16 port = 80);
      int setHost(const QString &hostname, ConnectionMode mode, quint16 port = 0);
  
      int setSocket(QTcpSocket *socket);
      int setUser(const QString &username, const QString &password = QString());
  
  #ifndef QT_NO_NETWORKPROXY
      int setProxy(const QString &host, int port,
                   const QString &username = QString(),
                   const QString &password = QString());
      int setProxy(const QNetworkProxy &proxy);
  #endif
  
      int get(const QString &path, QIODevice *to=0);
      int post(const QString &path, QIODevice *data, QIODevice *to=0 );
      int post(const QString &path, const QByteArray &data, QIODevice *to=0);
      int head(const QString &path);
      int request(const QHttpRequestHeader &header, QIODevice *device=0, QIODevice *to=0);
      int request(const QHttpRequestHeader &header, const QByteArray &data, QIODevice *to=0);
  
      int closeConnection();
      int close();
  
      qint64 bytesAvailable() const;
      qint64 read(char *data, qint64 maxlen);
      QByteArray readAll();
  
      int currentId() const;
      QIODevice *currentSourceDevice() const;
      QIODevice *currentDestinationDevice() const;
      QHttpRequestHeader currentRequest() const;
      QHttpResponseHeader lastResponse() const;
      bool hasPendingRequests() const;
      void clearPendingRequests();
  
      State state() const;
  
      Error error() const;
      QString errorString() const;
  
  public Q_SLOTS:
      void abort();
  
  #ifndef QT_NO_OPENSSL
      void ignoreSslErrors();
  #endif
  
  Q_SIGNALS:
      void stateChanged(int);
      void responseHeaderReceived(const QHttpResponseHeader &resp);
      void readyRead(const QHttpResponseHeader &resp);
  
      // ### Qt 5: change to qint64
      void dataSendProgress(int, int);
      void dataReadProgress(int, int);
  
      void requestStarted(int);
      void requestFinished(int, bool);
      void done(bool);
  
  #ifndef QT_NO_NETWORKPROXY
      void proxyAuthenticationRequired(const QNetworkProxy &proxy, QAuthenticator *);
  #endif
      void authenticationRequired(const QString &hostname, quint16 port, QAuthenticator *);
  
  #ifndef QT_NO_OPENSSL
      void sslErrors(const QList<QSslError> &errors);
  #endif
  
  private:
      Q_DISABLE_COPY(QHttp)
      QScopedPointer<QHttpPrivate> d;
  
      Q_PRIVATE_SLOT(d, void _q_startNextRequest())
      Q_PRIVATE_SLOT(d, void _q_slotReadyRead())
      Q_PRIVATE_SLOT(d, void _q_slotConnected())
      Q_PRIVATE_SLOT(d, void _q_slotError(QAbstractSocket::SocketError))
      Q_PRIVATE_SLOT(d, void _q_slotClosed())
      Q_PRIVATE_SLOT(d, void _q_slotBytesWritten(qint64 numBytes))
  #ifndef QT_NO_OPENSSL
      Q_PRIVATE_SLOT(d, void _q_slotEncryptedBytesWritten(qint64 numBytes))
  #endif
      Q_PRIVATE_SLOT(d, void _q_slotDoFinished())
      Q_PRIVATE_SLOT(d, void _q_slotSendRequest())
      Q_PRIVATE_SLOT(d, void _q_continuePost())
  
      friend class QHttpNormalRequest;
      friend class QHttpSetHostRequest;
      friend class QHttpSetSocketRequest;
      friend class QHttpSetUserRequest;
      friend class QHttpSetProxyRequest;
      friend class QHttpCloseRequest;
      friend class QHttpPGHRequest;
  };
  
  QT_END_HEADER
  
  #endif // QHTTP_H
  