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/***************************************************************************
* Copyright (C) 2005 by Joris Guisson *
* [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 <util/log.h>
#include <util/file.h>
#include <util/error.h>
#include <util/array.h>
#include <util/functions.h>
#include <torrent/globals.h>
#include <torrent/torrent.h>
#include <torrent/chunkmanager.h>
#include "multicachechecker.h"
using namespace bt;
namespace ktdebug
{
MultiCacheChecker::MultiCacheChecker(bt::Torrent& tor): CacheChecker(tor)
{}
MultiCacheChecker::~MultiCacheChecker()
{}
void MultiCacheChecker::check(const QString& cache_dir, const QString& index)
{
loadIndex(index);
QString cache = cache_dir;
if (!cache.endsWith(bt::DirSeparator()))
cache += bt::DirSeparator();
Uint32 num_chunks = tor.getNumChunks();
Uint64 curr_file_off = 0;
Uint32 curr_file = 0;
Uint64 chunk_size = tor.getChunkSize();
Array<Uint8> buf((Uint32)tor.getChunkSize());
Uint32 num_ok = 0,num_not_ok = 0,num_not_downloaded = 0,extra_ok = 0;
for (Uint32 i = 0;i < num_chunks;i++)
{
if (i % 100 == 0)
Out() << "Checked " << i << " chunks" << endl;
Uint64 size = chunk_size;
if (i == tor.getNumChunks() - 1 && tor.getFileLength() % chunk_size != 0)
size = tor.getFileLength() % chunk_size;
//Out() << "Loading chunk (size = " << size << ")" << endl;
Uint64 bytes_offset = 0;
while (bytes_offset < size)
{
TorrentFile & tf = tor.getFile(curr_file);
// Out() << "Current file : " << tf.getPath() << " (" << curr_file << ")" << endl;
Uint64 to_read = size - bytes_offset;
// Out() << "to_read = " << to_read << endl;
if (to_read <= tf.getSize() - curr_file_off)
{
// we can read the chunk from this file
File fptr;
if (!fptr.open(cache + tf.getPath(),"rb"))
throw Error(QString("Cannot open %1 : %2").arg(cache + tf.getPath()).arg(fptr.errorString()));
fptr.seek(File::BEGIN,curr_file_off);
fptr.read(buf + bytes_offset,to_read);
bytes_offset += to_read;
curr_file_off += to_read;
}
else
{
// read partially the data which can be read
to_read = tf.getSize() - curr_file_off;
// Out() << "Partially reading " << to_read << endl;
File fptr;
if (!fptr.open(cache + tf.getPath(),"rb"))
throw Error(QString("Cannot open %1 : %2").arg(cache + tf.getPath()).arg(fptr.errorString()));
fptr.seek(File::BEGIN,curr_file_off);
fptr.read(buf + bytes_offset,to_read);
bytes_offset += to_read;
// update curr_file and offset
curr_file++;
curr_file_off = 0;
}
} // end file reading while
// calculate hash and check it
SHA1Hash h = SHA1Hash::generate(buf,size);
if (h != tor.getHash(i))
{
if (downloaded_chunks.count(i) == 0)
{
num_not_downloaded++;
continue;
}
Out() << "Chunk " << i << " Failed :" << endl;
Out() << "\tShould be : " << tor.getHash(i).toString() << endl;
Out() << "\tIs : " << h.toString() << endl;
num_not_ok++;
failed_chunks.insert(i);
}
else
{
if (downloaded_chunks.count(i) == 0)
{
extra_ok++;
extra_chunks.insert(i);
continue;
}
num_ok++;
}
}
Out() << "Cache Check Summary" << endl;
Out() << "===================" << endl;
Out() << "Extra Chunks : " << extra_ok << endl;
Out() << "Chunks OK : " << num_ok << endl;
Out() << "Chunks Not Downloaded : " << num_not_downloaded << endl;
Out() << "Chunks Failed : " << num_not_ok << endl;
}
}
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