kio

httpfilter.h

00001 /* 
00002    This file is part of the KDE libraries
00003    Copyright (c) 2002 Waldo Bastian <bastian@kde.org>
00004    
00005    This library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Library General Public
00007    License version 2 as published by the Free Software Foundation.
00008    
00009    This library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Library General Public License for more details.
00013    
00014    You should have received a copy of the GNU Library General Public License
00015    along with this library; see the file COPYING.LIB.  If not, write to
00016    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00017    Boston, MA 02110-1301, USA.
00018 */
00019 
00020 #ifndef _HTTPFILTER_H_
00021 #define _HTTPFILTER_H_
00022 
00023 #include <config.h>
00024 
00025 #ifdef HAVE_LIBZ
00026 #define DO_GZIP
00027 #endif
00028 
00029 #ifdef DO_GZIP
00030 #include <zlib.h>
00031 #endif
00032 
00033 #include <qobject.h>
00034 #include <kmdcodec.h>
00035 
00036 class HTTPFilterBase : public QObject
00037 {
00038     Q_OBJECT
00039 public:
00040     HTTPFilterBase();
00041     ~HTTPFilterBase();
00042 
00043     void chain(HTTPFilterBase *previous);
00044 
00045 public slots:
00046     virtual void slotInput(const QByteArray &d) = 0;
00047     
00048 signals:
00049     void output(const QByteArray &d);
00050     void error(int, const QString &);
00051 
00052 protected:
00053     HTTPFilterBase *last;
00054 };
00055 
00056 class HTTPFilterChain : public HTTPFilterBase
00057 {
00058     Q_OBJECT
00059 public:
00060     HTTPFilterChain();
00061 
00062     void addFilter(HTTPFilterBase *filter);
00063 
00064 public slots:
00065     void slotInput(const QByteArray &d);
00066 
00067 private:
00068     HTTPFilterBase *first;
00069 };
00070 
00071 class HTTPFilterMD5 : public HTTPFilterBase
00072 {
00073     Q_OBJECT
00074 public:
00075     HTTPFilterMD5();
00076 
00077     QString md5();
00078 
00079 public slots:
00080     void slotInput(const QByteArray &d);
00081     
00082 private:
00083     KMD5 context;      
00084 };
00085 
00086 
00087 class HTTPFilterGZip : public HTTPFilterBase
00088 {
00089     Q_OBJECT
00090 public:
00091     HTTPFilterGZip();
00092     ~HTTPFilterGZip();
00093 
00094 public slots:
00095     void slotInput(const QByteArray &d);
00096     
00097 protected:
00098     int get_byte();
00099     int checkHeader();
00100 #ifdef DO_GZIP
00101     z_stream zstr;
00102     bool bEof : 1;
00103     bool bHasHeader : 1;
00104     bool bHasFinished : 1;
00105     bool bPlainText : 1;
00106     bool bEatTrailer : 1;
00107     QByteArray headerData;
00108     int iTrailer;
00109 #endif
00110 };
00111 
00112 class HTTPFilterDeflate : public HTTPFilterGZip
00113 {
00114     Q_OBJECT
00115 public:
00116     HTTPFilterDeflate();
00117 };
00118 
00119 #endif
kio

httpfilter.h

kio

API Reference
