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//
// HtNNTP.cc
//
// HtNNTP: Interface classes for NNTP messaging
//
// Gabriele Bartolini - Prato - Italia
// started: 01.08.2000
//
// Including:
// - Generic class
// - Response message class
//
// Part of the ht://Dig package <http://www.htdig.org/>
// Copyright (c) 2000-2004 The ht://Dig Group
// For copyright details, see the file COPYING in your distribution
// or the GNU Library General Public License (LGPL) version 2 or later
// <http://www.gnu.org/copyleft/lgpl.html>
//
// $Id: HtNNTP.cc,v 1.5 2004/05/28 13:15:23 lha Exp $
//
#ifdef HAVE_CONFIG_H
#include "htconfig.h"
#endif /* HAVE_CONFIG_H */
#include "lib.h"
#include "Transport.h"
#include "HtNNTP.h"
#include <signal.h>
#include <sys/types.h>
#include <ctype.h>
#include <stdio.h> // for sscanf
// for setw()
#ifdef HAVE_STD
#include <iomanip>
#ifdef HAVE_NAMESPACES
using namespace std;
#endif
#else
#include <iomanip.h>
#endif /* HAVE_STD */
#if 1
typedef void (*SIGNAL_HANDLER) (...);
#else
typedef SIG_PF SIGNAL_HANDLER;
#endif
// Stats information
int HtNNTP::_tot_seconds = 0;
int HtNNTP::_tot_requests = 0;
int HtNNTP::_tot_bytes = 0;
///////
// HtNNTP_Response class
//
// Response message sent by the remote NNTP server
///////
// Construction
HtNNTP_Response::HtNNTP_Response()
{
}
// Destruction
HtNNTP_Response::~HtNNTP_Response()
{
}
void HtNNTP_Response::Reset()
{
// Call the base class method in order to reset
// the base class attributes
Transport_Response::Reset();
}
///////
// HtNNTP generic class
//
//
///////
// Construction
HtNNTP::HtNNTP()
: Transport(new Connection()),
_bytes_read(0),
_useproxy(0)
{
}
// Destruction
HtNNTP::~HtNNTP()
{
// Free the connection
//
CloseConnection();
if (_connection)
delete _connection;
_connection = 0;
}
///////
// Manages the requesting process
///////
Transport::DocStatus HtNNTP::Request()
{
DocStatus result = Document_ok;
_response.Reset(); // Reset the response
return result;
}
void HtNNTP::SetRequestCommand(String &cmd)
{
cmd << "\r\n";
}
//*****************************************************************************
// int HtNNTP::ParseHeader()
// Parse the header of the document
//
int HtNNTP::ParseHeader()
{
String line = 0;
int inHeader = 1;
if (_response._modification_time)
{
delete _response._modification_time;
_response._modification_time=NULL;
}
while (inHeader)
{
line.trunc();
if(! _connection->Read_Line(line, "\n"))
return -1; // Connection down
_bytes_read+=line.length();
line.chop('\r');
if (line.length() == 0)
inHeader = 0;
else
{
// Found a not-empty line
if (debug > 3)
cout << "Header line: " << line << endl;
// Status - Line check
char *token = line.get();
while (*token && !isspace(*token))
token++;
while (*token && isspace(*token))
token++;
}
}
if (_response._modification_time == NULL)
{
if (debug > 3)
cout << "No modification time returned: assuming now" << endl;
//Set the modification time
_response._modification_time = new HtDateTime;
_response._modification_time->ToGMTime(); // Set to GM time
}
return 1;
}
HtNNTP::DocStatus HtNNTP::GetDocumentStatus(HtNNTP_Response &r)
{
// Let's give a look at the return status code
HtNNTP::DocStatus returnStatus=Document_not_found;
int statuscode;
statuscode=r.GetStatusCode();
if(statuscode==200)
{
returnStatus = Document_ok; // OK
}
// Exit the function
return returnStatus;
}
int HtNNTP::ReadBody()
{
_response._contents = 0; // Initialize the string
char docBuffer[8192];
int bytesRead = 0;
int bytesToGo = _response._content_length;
if (bytesToGo < 0 || bytesToGo > _max_document_size)
bytesToGo = _max_document_size;
if( _connection == NULL )
{
cout << "HtNNTP::ReadBody: _connection is NULL\n";
exit(0);
}
while (bytesToGo > 0)
{
int len = bytesToGo< (int)sizeof(docBuffer) ? bytesToGo : (int)sizeof(docBuffer);
bytesRead = _connection->Read(docBuffer, len);
if (bytesRead <= 0)
break;
_response._contents.append(docBuffer, bytesRead);
bytesToGo -= bytesRead;
_bytes_read+=bytesRead;
}
// Set document length
_response._document_length = _response._contents.length();
return bytesRead;
}
///////
// Show the statistics
///////
ostream &HtNNTP::ShowStatistics (ostream &out)
{
Transport::ShowStatistics(out); // call the base class method
out << " NNTP Requests : " << GetTotRequests() << endl;
out << " NNTP KBytes requested : " << (double)GetTotBytes()/1024 << endl;
out << " NNTP Average request time : " << GetAverageRequestTime()
<< " secs" << endl;
out << " NNTP Average speed : " << GetAverageSpeed()/1024
<< " KBytes/secs" << endl;
return out;
}
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