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

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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

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** 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.

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** 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

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

#ifndef QHTTPNETWORKREPLY_H

#define QHTTPNETWORKREPLY_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists for the convenience

// of the Network Access API.  This header file may change from

// version to version without notice, or even be removed.

//

// We mean it.

//

#include <qplatformdefs.h>

#ifndef QT_NO_HTTP

#ifndef QT_NO_COMPRESS

#    include <zlib.h>

static const unsigned char gz_magic[2] = {0x1f, 0x8b}; // gzip magic header

// gzip flag byte

#define HEAD_CRC     0x02 // bit 1 set: header CRC present

#define EXTRA_FIELD  0x04 // bit 2 set: extra field present

#define ORIG_NAME    0x08 // bit 3 set: original file name present

#define COMMENT      0x10 // bit 4 set: file comment present

#define RESERVED     0xE0 // bits 5..7: reserved

#define CHUNK 16384

#endif

#include <QtNetwork/qtcpsocket.h>

// it's safe to include these even if SSL support is not enabled

#include <QtNetwork/qsslsocket.h>

#include <QtNetwork/qsslerror.h>

#include <QtNetwork/qnetworkrequest.h>

#include <QtNetwork/qnetworkreply.h>

#include <qbuffer.h>

#include <private/qobject_p.h>

#include <private/qhttpnetworkheader_p.h>

#include <private/qhttpnetworkrequest_p.h>

#include <private/qauthenticator_p.h>

#include <private/qringbuffer_p.h>

#include <private/qbytedata_p.h>

QT_BEGIN_NAMESPACE

class QHttpNetworkConnection;

class QHttpNetworkConnectionChannel;

class QHttpNetworkRequest;

class QHttpNetworkConnectionPrivate;

class QHttpNetworkReplyPrivate;

class Q_AUTOTEST_EXPORT QHttpNetworkReply : public QObject, public QHttpNetworkHeader

{

    Q_OBJECT

public:

    explicit QHttpNetworkReply(const QUrl &url = QUrl(), QObject *parent = 0);

    virtual ~QHttpNetworkReply();

    QUrl url() const;

    void setUrl(const QUrl &url);

    int majorVersion() const;

    int minorVersion() const;

    qint64 contentLength() const;

    void setContentLength(qint64 length);

    QList<QPair<QByteArray, QByteArray> > header() const;

    QByteArray headerField(const QByteArray &name, const QByteArray &defaultValue = QByteArray()) const;

    void setHeaderField(const QByteArray &name, const QByteArray &data);

    void parseHeader(const QByteArray &header); // mainly for testing

    QHttpNetworkRequest request() const;

    void setRequest(const QHttpNetworkRequest &request);

    int statusCode() const;

    void setStatusCode(int code);

    QString errorString() const;

    void setErrorString(const QString &error);

    QString reasonPhrase() const;

    qint64 bytesAvailable() const;

    qint64 bytesAvailableNextBlock() const;

    QByteArray readAny();

    void setDownstreamLimited(bool t);

    bool isFinished() const;

    bool isPipeliningUsed() const;

#ifndef QT_NO_OPENSSL

    QSslConfiguration sslConfiguration() const;

    void setSslConfiguration(const QSslConfiguration &config);

    void ignoreSslErrors();

    void ignoreSslErrors(const QList<QSslError> &errors);

Q_SIGNALS:

    void sslErrors(const QList<QSslError> &errors);

#endif

Q_SIGNALS:

    void readyRead();

    void finished();

    void finishedWithError(QNetworkReply::NetworkError errorCode, const QString &detail = QString());

    void headerChanged();

    void dataReadProgress(int done, int total);

    void dataSendProgress(qint64 done, qint64 total);

private:

    Q_DECLARE_PRIVATE(QHttpNetworkReply)

    friend class QHttpNetworkConnection;

    friend class QHttpNetworkConnectionPrivate;

    friend class QHttpNetworkConnectionChannel;

};

class QHttpNetworkReplyPrivate : public QObjectPrivate, public QHttpNetworkHeaderPrivate

{

public:

    QHttpNetworkReplyPrivate(const QUrl &newUrl = QUrl());

    ~QHttpNetworkReplyPrivate();

    qint64 readStatus(QAbstractSocket *socket);

    bool parseStatus(const QByteArray &status);

    qint64 readHeader(QAbstractSocket *socket);

    void parseHeader(const QByteArray &header);

    qint64 readBody(QAbstractSocket *socket, QByteDataBuffer *out);

    qint64 readBodyFast(QAbstractSocket *socket, QByteDataBuffer *rb);

    bool findChallenge(bool forProxy, QByteArray &challenge) const;

    QAuthenticatorPrivate::Method authenticationMethod(bool isProxy) const;

    void clear();

    qint64 readReplyBodyRaw(QIODevice *in, QByteDataBuffer *out, qint64 size);

    qint64 readReplyBodyChunked(QIODevice *in, QByteDataBuffer *out);

    qint64 getChunkSize(QIODevice *in, qint64 *chunkSize);

    void appendUncompressedReplyData(QByteArray &qba);

    void appendUncompressedReplyData(QByteDataBuffer &data);

    void appendCompressedReplyData(QByteDataBuffer &data);

    bool shouldEmitSignals();

    bool expectContent();

    void eraseData();

    qint64 bytesAvailable() const;

    bool isChunked();

    bool isConnectionCloseEnabled();

    bool isGzipped();

#ifndef QT_NO_COMPRESS

    bool gzipCheckHeader(QByteArray &content, int &pos);

    int gunzipBodyPartially(QByteArray &compressed, QByteArray &inflated);

#endif

    void removeAutoDecompressHeader();

    enum ReplyState {

        NothingDoneState,

        ReadingStatusState,

        ReadingHeaderState,

        ReadingDataState,

        AllDoneState

    } state;

    QHttpNetworkRequest request;

    int statusCode;

    int majorVersion;

    int minorVersion;

    QString errorString;

    QString reasonPhrase;

    qint64 bodyLength;

    qint64 contentRead;

    qint64 totalProgress;

    QByteArray fragment; // used for header, status, chunk header etc, not for reply data

    bool chunkedTransferEncoding;

    bool connectionCloseEnabled;

    bool forceConnectionCloseEnabled;

    qint64 currentChunkSize;

    qint64 currentChunkRead;

    QPointer<QHttpNetworkConnection> connection;

    QPointer<QHttpNetworkConnectionChannel> connectionChannel;

    bool initInflate;

    bool streamEnd;

#ifndef QT_NO_COMPRESS

    z_stream inflateStrm;

#endif

    bool autoDecompress;

    QByteDataBuffer responseData; // uncompressed body

    QByteArray compressedData; // compressed body (temporary)

    bool requestIsPrepared;

    bool pipeliningUsed;

    bool downstreamLimited;

};

QT_END_NAMESPACE

//Q_DECLARE_METATYPE(QHttpNetworkReply)

#endif // QT_NO_HTTP

#endif // QHTTPNETWORKREPLY_H