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#ifndef _KVI_HTTP_H_
#define _KVI_HTTP_H_
//=============================================================================
//
// File : kvi_http.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) 2002-2007 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 opinion) 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. ,59 Temple Place - Suite 33, Boston, MA 02110-1301, USA.
//
//=============================================================================
#include "kvi_settings.h"
#include "kvi_heapobject.h"
#include "kvi_string.h"
#include "kvi_thread.h"
#include "kvi_sockettype.h"
#include "kvi_databuffer.h"
#include "kvi_inttypes.h"
#include "kvi_url.h"
#include <tqobject.h>
#include "kvi_pointerhashtable.h"
#include "kvi_file.h"
#include <tqstringlist.h>
class KviDns;
class KviSSL;
class KviHttpRequestThread;
//
// 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 TQT_SLOT().
//
class KVILIB_API KviHttpRequest : public TQObject, 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;
TQString m_szFileName;
ProcessingType m_eProcessingType;
ExistingFileAction m_eExistingFileAction;
void * m_pPrivateData;
unsigned int m_uMaxContentLength;
unsigned int m_uContentOffset;
TQString m_szPostData;
// status
TQString m_szLastError;
unsigned int m_uTotalSize;
unsigned int m_uReceivedSize;
// internal status
TQString m_szIp;
KviDns * m_pDns;
KviHttpRequestThread * m_pThread;
KviDataBuffer * m_pBuffer;
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
KviFile * m_pFile;
protected:
bool startDnsLookup();
virtual bool event(TQEvent *e);
void processData(KviDataBuffer * data);
bool processHeader(KviStr &szHeader);
bool openFile();
void emitLines(KviDataBuffer * pDataBuffer);
void resetStatus();
void resetData();
void resetInternalStatus();
protected slots:
void dnsLookupDone(KviDns *d);
void haveServerIp();
public:
const KviUrl & url(){ return m_url; };
ProcessingType processingType(){ return m_eProcessingType; };
ExistingFileAction existingFileAction(){ return m_eExistingFileAction; };
const TQString &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 TQString &szPostData){ m_szPostData = szPostData; };
void setUrl(const KviUrl &u){ m_url = u; };
void setProcessingType(ProcessingType t){ m_eProcessingType = t; };
void setExistingFileAction(ExistingFileAction a){ m_eExistingFileAction = a; };
void setFileName(const TQString &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 TQString &szFileName = TQString());
const TQString & lastError(){ return m_szLastError; };
void abort();
signals:
void resolvingHost(const TQString &hostname);
void contactingHost(const TQString &ipandport);
void connectionEstabilished();
void receivedResponse(const TQString &response);
void terminated(bool bSuccess);
void status(const TQString &message);
void data(const KviStr &data);
void binaryData(const KviDataBuffer &data);
void header(KviPointerHashTable<const char *,KviStr> * hdr);
void requestSent(const TQStringList &request);
};
class KviHttpRequestThread : public KviSensitiveThread
{
friend class KviHttpRequest;
public:
enum RequestMethod { Post, Get , Head };
protected:
KviHttpRequestThread(KviHttpRequest * r,
const TQString &szHost,
const TQString &szIp,
unsigned short uPort,
const TQString &szPath,
unsigned int uContentOffset,
RequestMethod m,
const TQString &szPostData = TQString(),
bool bUseSSL = false);
public:
~KviHttpRequestThread();
protected:
KviHttpRequest * m_pRequest;
TQString m_szHost;
TQString m_szIp;
TQString m_szPath;
unsigned int m_uContentOffset;
RequestMethod m_eRequestMethod;
TQString m_szPostData;
unsigned short m_uPort;
kvi_socket_t m_sock;
bool m_bUseSSL;
#ifdef COMPILE_SSL_SUPPORT
KviSSL * m_pSSL;
#endif
protected:
int selectForReadStep();
bool selectForRead(int iTimeoutInSecs);
bool readDataStep();
bool sendBuffer(const char *buffer,int bufLen,int iTimeoutInSecs);
bool failure(const char *error=0);
bool sslFailure();
bool selectForWrite(int iTimeoutInSecs);
bool connectToRemoteHost();
bool processInternalEvents();
void runInternal();
virtual void run();
};
#endif //_KVI_HTTP_H_
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