1 /* <!-- copyright */ 2 /* 3 * aria2 - The high speed download utility 4 * 5 * Copyright (C) 2006 Tatsuhiro Tsujikawa 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 * 21 * In addition, as a special exception, the copyright holders give 22 * permission to link the code of portions of this program with the 23 * OpenSSL library under certain conditions as described in each 24 * individual source file, and distribute linked combinations 25 * including the two. 26 * You must obey the GNU General Public License in all respects 27 * for all of the code used other than OpenSSL. If you modify 28 * file(s) with this exception, you may extend this exception to your 29 * version of the file(s), but you are not obligated to do so. If you 30 * do not wish to do so, delete this exception statement from your 31 * version. If you delete this exception statement from all source 32 * files in the program, then also delete it here. 33 */ 34 /* copyright --> */ 35 #ifndef D_FTP_NEGOTIATION_COMMAND_H 36 #define D_FTP_NEGOTIATION_COMMAND_H 37 38 #include "AbstractCommand.h" 39 40 #include <deque> 41 42 namespace aria2 { 43 44 class FtpConnection; 45 class SocketCore; 46 class HttpConnection; 47 48 class FtpNegotiationCommand : public AbstractCommand { 49 public: 50 enum Seq { 51 SEQ_RECV_GREETING, 52 SEQ_SEND_USER, 53 SEQ_RECV_USER, 54 SEQ_SEND_PASS, 55 SEQ_RECV_PASS, 56 SEQ_SEND_TYPE, 57 SEQ_RECV_TYPE, 58 SEQ_SEND_PWD, 59 SEQ_RECV_PWD, 60 SEQ_SEND_CWD_PREP, 61 SEQ_SEND_CWD, 62 SEQ_RECV_CWD, 63 SEQ_SEND_MDTM, 64 SEQ_RECV_MDTM, 65 SEQ_SEND_SIZE, 66 SEQ_RECV_SIZE, 67 SEQ_PREPARE_PORT, 68 SEQ_PREPARE_SERVER_SOCKET_EPRT, 69 SEQ_SEND_EPRT, 70 SEQ_RECV_EPRT, 71 SEQ_PREPARE_SERVER_SOCKET, 72 SEQ_SEND_PORT, 73 SEQ_RECV_PORT, 74 SEQ_PREPARE_PASV, 75 SEQ_SEND_EPSV, 76 SEQ_RECV_EPSV, 77 SEQ_SEND_PASV, 78 SEQ_RECV_PASV, 79 SEQ_RESOLVE_PROXY, 80 SEQ_SEND_TUNNEL_REQUEST, 81 SEQ_RECV_TUNNEL_RESPONSE, 82 SEQ_SEND_REST_PASV, 83 SEQ_SEND_REST, 84 SEQ_RECV_REST, 85 SEQ_SEND_RETR, 86 SEQ_RECV_RETR, 87 SEQ_WAIT_CONNECTION, 88 SEQ_NEGOTIATION_COMPLETED, 89 SEQ_RETRY, 90 SEQ_HEAD_OK, 91 SEQ_DOWNLOAD_ALREADY_COMPLETED, 92 SEQ_FILE_PREPARATION, // File allocation after SIZE command 93 SEQ_EXIT 94 }; 95 96 private: 97 bool recvGreeting(); 98 bool sendUser(); 99 bool recvUser(); 100 bool sendPass(); 101 bool recvPass(); 102 bool sendType(); 103 bool recvType(); 104 bool sendPwd(); 105 bool recvPwd(); 106 bool sendCwdPrep(); 107 bool sendCwd(); 108 bool recvCwd(); 109 bool sendMdtm(); 110 bool recvMdtm(); 111 bool sendSize(); 112 bool recvSize(); 113 bool preparePort(); 114 bool prepareServerSocketEprt(); 115 bool sendEprt(); 116 bool recvEprt(); 117 bool prepareServerSocket(); 118 bool sendPort(); 119 bool recvPort(); 120 bool preparePasv(); 121 bool sendEpsv(); 122 bool recvEpsv(); 123 bool sendPasv(); 124 bool recvPasv(); 125 bool preparePasvConnect(); 126 bool resolveProxy(); 127 bool sendTunnelRequest(); 128 bool recvTunnelResponse(); 129 bool sendRest(const std::shared_ptr<Segment>& segment); 130 bool sendRestPasv(const std::shared_ptr<Segment>& segment); 131 bool recvRest(const std::shared_ptr<Segment>& segment); 132 bool sendRetr(); 133 bool recvRetr(); 134 bool waitConnection(); 135 bool processSequence(const std::shared_ptr<Segment>& segment); 136 137 void afterFileAllocation(); 138 139 void poolConnection() const; 140 141 bool onFileSizeDetermined(int64_t totalLength); 142 143 void onDryRunFileFound(); 144 145 std::shared_ptr<SocketCore> dataSocket_; 146 std::shared_ptr<SocketCore> serverSocket_; 147 Seq sequence_; 148 std::shared_ptr<FtpConnection> ftp_; 149 // For tunneling 150 std::shared_ptr<HttpConnection> http_; 151 // Port number in PASV/EPSV response 152 uint16_t pasvPort_; 153 // Resolved address for proxy 154 std::string proxyAddr_; 155 156 std::deque<std::string> cwdDirs_; 157 158 protected: 159 virtual bool executeInternal() CXX11_OVERRIDE; 160 161 public: 162 FtpNegotiationCommand(cuid_t cuid, const std::shared_ptr<Request>& req, 163 const std::shared_ptr<FileEntry>& fileEntry, 164 RequestGroup* requestGroup, DownloadEngine* e, 165 const std::shared_ptr<SocketCore>& s, 166 Seq seq = SEQ_RECV_GREETING, 167 const std::string& baseWorkingDir = "/"); 168 virtual ~FtpNegotiationCommand(); 169 }; 170 171 } // namespace aria2 172 173 #endif // D_FTP_NEGOTIATION_COMMAND_H 174