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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#ifndef D_FTP_NEGOTIATION_COMMAND_H
#define D_FTP_NEGOTIATION_COMMAND_H
#include "AbstractCommand.h"
#include <deque>
namespace aria2 {
class FtpConnection;
class SocketCore;
class HttpConnection;
class FtpNegotiationCommand : public AbstractCommand {
public:
enum Seq {
SEQ_RECV_GREETING,
SEQ_SEND_USER,
SEQ_RECV_USER,
SEQ_SEND_PASS,
SEQ_RECV_PASS,
SEQ_SEND_TYPE,
SEQ_RECV_TYPE,
SEQ_SEND_PWD,
SEQ_RECV_PWD,
SEQ_SEND_CWD_PREP,
SEQ_SEND_CWD,
SEQ_RECV_CWD,
SEQ_SEND_MDTM,
SEQ_RECV_MDTM,
SEQ_SEND_SIZE,
SEQ_RECV_SIZE,
SEQ_PREPARE_PORT,
SEQ_PREPARE_SERVER_SOCKET_EPRT,
SEQ_SEND_EPRT,
SEQ_RECV_EPRT,
SEQ_PREPARE_SERVER_SOCKET,
SEQ_SEND_PORT,
SEQ_RECV_PORT,
SEQ_PREPARE_PASV,
SEQ_SEND_EPSV,
SEQ_RECV_EPSV,
SEQ_SEND_PASV,
SEQ_RECV_PASV,
SEQ_RESOLVE_PROXY,
SEQ_SEND_TUNNEL_REQUEST,
SEQ_RECV_TUNNEL_RESPONSE,
SEQ_SEND_REST_PASV,
SEQ_SEND_REST,
SEQ_RECV_REST,
SEQ_SEND_RETR,
SEQ_RECV_RETR,
SEQ_WAIT_CONNECTION,
SEQ_NEGOTIATION_COMPLETED,
SEQ_RETRY,
SEQ_HEAD_OK,
SEQ_DOWNLOAD_ALREADY_COMPLETED,
SEQ_FILE_PREPARATION, // File allocation after SIZE command
SEQ_EXIT
};
private:
bool recvGreeting();
bool sendUser();
bool recvUser();
bool sendPass();
bool recvPass();
bool sendType();
bool recvType();
bool sendPwd();
bool recvPwd();
bool sendCwdPrep();
bool sendCwd();
bool recvCwd();
bool sendMdtm();
bool recvMdtm();
bool sendSize();
bool recvSize();
bool preparePort();
bool prepareServerSocketEprt();
bool sendEprt();
bool recvEprt();
bool prepareServerSocket();
bool sendPort();
bool recvPort();
bool preparePasv();
bool sendEpsv();
bool recvEpsv();
bool sendPasv();
bool recvPasv();
bool preparePasvConnect();
bool resolveProxy();
bool sendTunnelRequest();
bool recvTunnelResponse();
bool sendRest(const std::shared_ptr<Segment>& segment);
bool sendRestPasv(const std::shared_ptr<Segment>& segment);
bool recvRest(const std::shared_ptr<Segment>& segment);
bool sendRetr();
bool recvRetr();
bool waitConnection();
bool processSequence(const std::shared_ptr<Segment>& segment);
void afterFileAllocation();
void poolConnection() const;
bool onFileSizeDetermined(int64_t totalLength);
void onDryRunFileFound();
std::shared_ptr<SocketCore> dataSocket_;
std::shared_ptr<SocketCore> serverSocket_;
Seq sequence_;
std::shared_ptr<FtpConnection> ftp_;
// For tunneling
std::shared_ptr<HttpConnection> http_;
// Port number in PASV/EPSV response
uint16_t pasvPort_;
// Resolved address for proxy
std::string proxyAddr_;
std::deque<std::string> cwdDirs_;
protected:
virtual bool executeInternal() CXX11_OVERRIDE;
public:
FtpNegotiationCommand(cuid_t cuid,
const std::shared_ptr<Request>& req,
const std::shared_ptr<FileEntry>& fileEntry,
RequestGroup* requestGroup,
DownloadEngine* e,
const std::shared_ptr<SocketCore>& s,
Seq seq = SEQ_RECV_GREETING,
const std::string& baseWorkingDir = "/");
virtual ~FtpNegotiationCommand();
};
} // namespace aria2
#endif // D_FTP_NEGOTIATION_COMMAND_H
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