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/***************************************************************************
* Copyright (C) 2006 by Alan Jones *
* [email protected] *
* *
* 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 "rsslinkdownloader.h"
#include <klocale.h>
#include <kmimetype.h>
#include <kmessagebox.h>
#include <tqfile.h>
#include "../../libktorrent/torrent/bdecoder.h"
#include "../../libktorrent/torrent/bnode.h"
using namespace bt;
namespace kt
{
RssLinkDownloader::RssLinkDownloader(CoreInterface* core, TQString link, RssFilter * filter, TQObject * parent) : TQObject (parent)
{
//tempFile.setAutoDelete(true);
m_core = core;
firstLink = true;
curFilter = filter;
if (!KURL(link).isValid())
{
// no valid URL, so just display an error message
KMessageBox::error(0,i18n("Failed to find and download a valid torrent for %1").arg(curLink));
TQTimer::singleShot(50,this,TQT_SLOT(suicide()));
}
else
{
//first let's download the link so we can process it to check for the actual torrent
curLink = curSubLink = link;
curFile = KIO::storedGet(link,false,false);
connect(curFile, TQT_SIGNAL(result(KIO::Job*)),this,TQT_SLOT(processLink( KIO::Job* )));
}
}
RssLinkDownloader::~RssLinkDownloader()
{
}
void RssLinkDownloader::processLink(KIO::Job* jobStatus)
{
if (!jobStatus->error())
{
//the file downloaded ok - so let's check if it's a torrent
KMimeType linkType = *KMimeType::findByContent(curFile->data());
if (linkType.is("text/html"))
{
if (firstLink)
{
KURL url = curLink;
//let's go through the data and populate our sublink array
TQTextStream html(curFile->data(), IO_ReadOnly);
//go through a line at a time checking for a torrent
TQString htmlline = html.readLine();
while (!htmlline.isNull())
{
TQRegExp hrefTags = TQString("<A.*HREF.*</A");
hrefTags.setCaseSensitive(false);
hrefTags.setMinimal(true);
int matchPos = 0;
while (htmlline.find(hrefTags, matchPos) >= 0)
{
matchPos += hrefTags.matchedLength();
//we're found an <a href tag - let's check it if contains download
TQRegExp hrefText = TQString("d(own)?load");
hrefText.setCaseSensitive(false);
if (!hrefTags.capturedTexts()[0].contains(hrefText))
{
//link text doesn't contain dload/download
continue;
}
//we're found an <a href tag - now let's the the url out of it
hrefText = TQString("HREF=\"?([^\">< ]*)[\" ]");
hrefText.setCaseSensitive(false);
hrefTags.capturedTexts()[0].find(hrefText);
//lets get the captured
TQString hrefLink = hrefText.capturedTexts()[1];
if (hrefLink.startsWith("/"))
{
hrefLink = url.protocol() + "://" + url.host() + hrefLink;
}
else if (!hrefLink.startsWith("http://", false))
{
hrefLink = url.url().left(url.url().findRev("/")+1) + hrefLink;
}
subLinks.append(hrefLink);
}
//run the query again
htmlline = html.readLine();
}
firstLink = false;
}
}
else
{
//I know this may check a file which we've already been told is html, but sometimes it lies
try
{
//last ditched brute force attempt to check if it's a torrent file
BNode* node = 0;
BDecoder decoder(curFile->data(),false);
node = decoder.decode();
BDictNode* dict = dynamic_cast<BDictNode*>(node);
if (dict)
{
delete node;
node = dict = 0;
if (curFilter)
{
m_core->loadSilently( curSubLink );
emit linkDownloaded( curLink, 3);
}
else
{
m_core->load( curSubLink );
emit linkDownloaded( curLink, 1);
}
//delete ourself and finish
deleteLater();
return;
}
}
catch (...)
{
//we can just ignore any errors here
}
}
}
//curFile->deleteLater();
//check for the next item
if (subLinks.isEmpty())
{
if (curFilter)
{
//we've failed to download a torrent for this match
curFilter->deleteMatch( curLink );
}
else
{
//failed to download a selected article from a feed
KMessageBox::error(0,i18n("Failed to find and download a valid torrent for %1").arg(curLink));
}
deleteLater();
}
else
{
curSubLink = subLinks.first();
subLinks.pop_front();
curFile = KIO::storedGet(curSubLink,false,false);
connect(curFile, TQT_SIGNAL(result(KIO::Job*)),this,TQT_SLOT(processLink( KIO::Job* )));
}
}
void RssLinkDownloader::suicide()
{
deleteLater();
}
}
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