/****************************************************************************

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtNetwork module of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** 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, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#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

QT_BEGIN_NAMESPACE

QT_MODULE(Network)

#ifndef QT_NO_HTTP

class QTcpSocket;

class QTimerEvent;

class QIODevice;

class QAuthenticator;

class QNetworkProxy;

class QSslError;

class QHttpPrivate;

class QHttpHeaderPrivate;

class Q_NETWORK_EXPORT 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 Q_NETWORK_EXPORT 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 Q_NETWORK_EXPORT 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 Q_NETWORK_EXPORT 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);

#ifdef QT3_SUPPORT

    inline QT3_SUPPORT qint64 readBlock(char *data, quint64 maxlen)

    { return read(data, qint64(maxlen)); }

#endif

    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)

    Q_DECLARE_PRIVATE(QHttp)

    Q_PRIVATE_SLOT(d_func(), void _q_startNextRequest())

    Q_PRIVATE_SLOT(d_func(), void _q_slotReadyRead())

    Q_PRIVATE_SLOT(d_func(), void _q_slotConnected())

    Q_PRIVATE_SLOT(d_func(), void _q_slotError(QAbstractSocket::SocketError))

    Q_PRIVATE_SLOT(d_func(), void _q_slotClosed())

    Q_PRIVATE_SLOT(d_func(), void _q_slotBytesWritten(qint64 numBytes))

#ifndef QT_NO_OPENSSL

    Q_PRIVATE_SLOT(d_func(), void _q_slotEncryptedBytesWritten(qint64 numBytes))

#endif

    Q_PRIVATE_SLOT(d_func(), void _q_slotDoFinished())

    Q_PRIVATE_SLOT(d_func(), void _q_slotSendRequest())

    Q_PRIVATE_SLOT(d_func(), void _q_continuePost())

    friend class QHttpNormalRequest;

    friend class QHttpSetHostRequest;

    friend class QHttpSetSocketRequest;

    friend class QHttpSetUserRequest;

    friend class QHttpSetProxyRequest;

    friend class QHttpCloseRequest;

    friend class QHttpPGHRequest;

};

#endif // QT_NO_HTTP

QT_END_NAMESPACE

QT_END_HEADER

#endif // QHTTP_H