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#ifndef _KviHttpRequest_h_
#define _KviHttpRequest_h_
//=============================================================================
//
// File : KviHttpRequest.h
// Creation date : Sat Aug 17 13:43:31 2002 GMT by Szymon Stefanek
//
// This file is part of the KVIrc IRC client distribution
// Copyright (C) 2002-2010 Szymon Stefanek (pragma at kvirc dot net)
//
// This program is FREE software. You can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the HOPE that it will be USEFUL,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, write to the Free Software Foundation,
// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
//=============================================================================
#include "kvi_settings.h"
#include "kvi_inttypes.h"
#ifdef Status
#undef Status
#endif // otherwise QTextStream freaks out
#include <QTextStream> // with automoc we need this to be included before the other files
#include "KviHeapObject.h"
#include "KviPointerHashTable.h"
#include "KviUrl.h"
#include <QAbstractSocket>
#include <QObject>
class KviCString;
class KviDnsResolver;
class KviDataBuffer;
//
// This class implements a HTTP protocol client.
// It's able to send GET, POST and HEAD requests,
// download stuff to a file or to a qt SLOT().
//
// FIXME: Document and hide internals.
class KviHttpRequestPrivate;
class KVILIB_API KviHttpRequest : public QObject, public KviHeapObject
{
Q_OBJECT
public:
enum ProcessingType
{
HeadersOnly, // Download headers only (HEAD request)
WholeFile, // Emit the data as whole file (binaryData() is emitted)
Blocks, // Emit the data as blocks (binaryData() is emitted)
Lines, // Emit the data as ASCII text lines (the client must take care of decoding the data)
StoreToFile // Store the data to a file
};
enum ExistingFileAction
{
Overwrite, // Overwrite existing file
RenameIncoming, // Automatically rename the incoming file
RenameExisting, // Automatically rename the existing file
Resume // Attempt to resume the file (get partial content)
};
public:
KviHttpRequest();
~KviHttpRequest();
protected:
// data
KviUrl m_url; // the url requested by the user
QString m_szFileName;
ProcessingType m_eProcessingType;
ExistingFileAction m_eExistingFileAction;
void * m_pPrivateData;
unsigned int m_uMaxContentLength;
unsigned int m_uContentOffset;
QString m_szPostData;
bool m_bFollowRedirects;
unsigned int m_uMaximumRedirectCount;
// status
QString m_szLastError;
unsigned int m_uTotalSize;
unsigned int m_uReceivedSize;
// internal status
KviUrl m_connectionUrl; // the actual url used in the connection (may change upon redirect)
bool m_bHeaderProcessed;
bool m_bChunkedTransferEncoding;
bool m_bGzip;
unsigned int m_uRemainingChunkSize;
bool m_bIgnoreRemainingData; // used in chunked transfer after the last chunk has been seen
unsigned int m_uConnectionTimeout; // in seconds, 60 secs by default
unsigned int m_uRedirectCount;
private:
KviHttpRequestPrivate * m_p;
public:
bool followRedirects() const
{
return m_bFollowRedirects;
}
void setFollowRedirects(bool bFollow)
{
m_bFollowRedirects = bFollow;
}
void setMaximumRedirectCount(unsigned int uCount)
{
m_uMaximumRedirectCount = uCount;
}
void setConnectionTimeout(unsigned int uConnectionTimeout)
{
m_uConnectionTimeout = uConnectionTimeout;
if(m_uConnectionTimeout < 5)
m_uConnectionTimeout = 5; // keep it sane
}
const KviUrl & url() { return m_url; };
ProcessingType processingType() { return m_eProcessingType; };
ExistingFileAction existingFileAction() { return m_eExistingFileAction; };
const QString & fileName() { return m_szFileName; };
void * privateData() { return m_pPrivateData; };
unsigned int maxContentLength() { return m_uMaxContentLength; };
unsigned int contentOffset() { return m_uContentOffset; };
unsigned int totalSize() { return m_uTotalSize; };
unsigned int receivedSize() { return m_uReceivedSize; };
void reset();
void setPostData(const QString & szPostData) { m_szPostData = szPostData; };
void setUrl(const KviUrl & u)
{
m_url = u;
m_connectionUrl = u;
};
void setProcessingType(ProcessingType t) { m_eProcessingType = t; };
void setExistingFileAction(ExistingFileAction a) { m_eExistingFileAction = a; };
void setFileName(const QString & szFileName) { m_szFileName = szFileName; };
void setPrivateData(void * ptr) { m_pPrivateData = ptr; };
void setMaxContentLength(int uMaxContentLength) { m_uMaxContentLength = uMaxContentLength; }; //0 means unlimited
// this will work regardless of ExistingFileAction : even if the file doesn't exist
void setContentOffset(int uContentOffset) { m_uContentOffset = uContentOffset; };
bool start();
// this is a shortcut for reset()+setUrl()+setProcessingType()+setFileName()+start()
bool get(const KviUrl & u, ProcessingType p = WholeFile, const QString & szFileName = QString());
const QString & lastError() { return m_szLastError; };
void abort();
signals:
void resolvingHost(const QString & hostname);
void contactingHost(const QString & ipandport);
void connectionEstablished();
void receivedResponse(const QString & response);
void terminated(bool bSuccess);
void status(const QString & message);
void data(const KviCString & data);
void binaryData(const KviDataBuffer & data);
void header(KviPointerHashTable<const char *, KviCString> * hdr);
void requestSent(const QStringList & request);
private:
void closeSocket();
bool doConnect();
void processData(KviDataBuffer * data);
bool processHeader(KviCString & szHeader);
bool openFile();
void emitLines(KviDataBuffer * pDataBuffer);
void resetStatus();
void resetData();
void resetInternalStatus();
private slots:
void slotSocketReadDataReady();
void slotSocketDisconnected();
void slotSocketConnected();
void slotSocketError(QAbstractSocket::SocketError socketError);
void slotConnectionTimedOut();
void slotSocketHostResolved();
};
#endif //_KviHttpRequest_h_
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