/** * OnionCoffee - Anonymous Communication through TOR Network * Copyright (C) 2005-2007 RWTH Aachen University, Informatik IV * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * * 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 */ package TorJava; /** * sends a BEGIN cell, needed to establish a tcp-stream * * @author Lexi Pimenidis */ class CellRelayBegin extends CellRelay { /** * constructor to build a BEGIN-CELL * * @param s * the stream that will carry the cell and the following data * @param sp * contains the host and port to connect to */ CellRelayBegin(TCPStream s, TCPStreamProperties sp) { // init a new Relay-cell super(s, RELAY_BEGIN); // ADDRESS | ':' | PORT | [00] byte[] host; if (sp.addr_resolved) { // insert IP-adress in dotted-quad format, if // resolved StringBuffer sb = new StringBuffer(); byte[] a = sp.addr.getAddress(); for (int i = 0; i < 4; ++i) { if (i > 0) sb.append('.'); sb.append((int) (a[i]) & 0xff); } ; host = sb.toString().getBytes(); } else { host = sp.hostname.getBytes(); // otherwise let exit-point resolv // name itself } ; System.arraycopy(host, 0, data, 0, host.length); // set ':' data[host.length] = ':'; // set port byte[] port = new Integer(sp.port).toString().getBytes(); System.arraycopy(port, 0, data, host.length + 1, port.length); // set length length = host.length + 1 + port.length + 1; } }