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/* <!-- copyright */
/*
* aria2 - a simple utility for downloading files faster
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* copyright --> */
#include "TrackerDownloadCommand.h"
#include "TrackerUpdateCommand.h"
#include "ChunkedEncoding.h"
#include "DlRetryEx.h"
#include "message.h"
#include "MetaFileUtil.h"
#include "DlAbortEx.h"
TrackerDownloadCommand::TrackerDownloadCommand(int cuid, Request* req,
TorrentDownloadEngine* e,
const Socket* s)
:AbstractCommand(cuid, req, e, s), len(0) {
resSize = 256;
res = new char[resSize];
ChunkedEncoding* ce = new ChunkedEncoding();
transferEncodings["chunked"] = ce;
}
TrackerDownloadCommand::~TrackerDownloadCommand() {
delete [] res;
for(map<string, TransferEncoding*>::iterator itr = transferEncodings.begin(); itr != transferEncodings.end(); itr++) {
delete((*itr).second);
}
}
bool TrackerDownloadCommand::executeInternal(Segment seg) {
TransferEncoding* te = NULL;
if(transferEncoding.size()) {
te = getTransferEncoding(transferEncoding);
assert(te != NULL);
}
int bufSize = 4096;
char buf[bufSize];
socket->readData(buf, bufSize);
if(te != NULL) {
int infbufSize = 4096;
char infbuf[infbufSize];
te->inflate(infbuf, infbufSize, buf, bufSize);
if(len+infbufSize >= resSize) {
expandBuffer(len+infbufSize);
}
memcpy(res+len, infbuf, infbufSize);
len += infbufSize;
} else {
if(len+bufSize >= resSize) {
expandBuffer(len+bufSize);
}
memcpy(res+len, buf, bufSize);
len += bufSize;
}
if(e->segmentMan->totalSize != 0 && bufSize == 0) {
throw new DlRetryEx(EX_GOT_EOF);
}
if(te != NULL && te->finished()
|| te == NULL && len == e->segmentMan->totalSize
|| bufSize == 0) {
if(te != NULL) te->end();
e->logger->info(MSG_DOWNLOAD_COMPLETED, cuid);
MetaEntry* entry = MetaFileUtil::bdecoding(res, len);
e->commands.push(new TrackerUpdateCommand(cuid, req, (TorrentDownloadEngine*)e, entry));
return true;
} else {
e->commands.push(this);
return false;
}
}
TransferEncoding* TrackerDownloadCommand::getTransferEncoding(string name) {
return transferEncodings[name];
}
void TrackerDownloadCommand::expandBuffer(int newSize) {
char* newbuf = new char[newSize];
memcpy(newbuf, res, len);
delete [] res;
res = newbuf;
resSize = newSize;
}
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