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1: /* 2: * ComsatClient.java 3: * Copyright (C) 2004 The Free Software Foundation 4: * 5: * This file is part of GNU inetlib, a library. 6: * 7: * GNU inetlib 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: * GNU inetlib 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 library; if not, write to the Free Software 19: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20: * 21: * Linking this library statically or dynamically with other modules is 22: * making a combined work based on this library. Thus, the terms and 23: * conditions of the GNU General Public License cover the whole 24: * combination. 25: * 26: * As a special exception, the copyright holders of this library give you 27: * permission to link this library with independent modules to produce an 28: * executable, regardless of the license terms of these independent 29: * modules, and to copy and distribute the resulting executable under 30: * terms of your choice, provided that you also meet, for each linked 31: * independent module, the terms and conditions of the license of that 32: * module. An independent module is a module which is not derived from 33: * or based on this library. If you modify this library, you may extend 34: * this exception to your version of the library, but you are not 35: * obliged to do so. If you do not wish to do so, delete this 36: * exception statement from your version. 37: */ 38: 39: package gnu.inet.comsat; 40: 41: import java.io.IOException; 42: import java.net.DatagramPacket; 43: import java.net.DatagramSocket; 44: import java.util.StringTokenizer; 45: 46: /** 47: * Simple comsat client. 48: * 49: * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> 50: */ 51: public class ComsatClient 52: { 53: 54: /** 55: * The default comsat port. 56: */ 57: public static final int DEFAULT_PORT = 512; 58: 59: protected DatagramSocket socket; 60: 61: public ComsatClient() 62: throws IOException 63: { 64: this(DEFAULT_PORT, 0); 65: } 66: 67: public ComsatClient(int port, int timeout) 68: throws IOException 69: { 70: if (port < 0) 71: { 72: port = DEFAULT_PORT; 73: } 74: 75: socket = new DatagramSocket(port); 76: if (timeout > 0) 77: { 78: socket.setSoTimeout(timeout); 79: } 80: socket.setReceiveBufferSize(1024); 81: } 82: 83: public void close() 84: throws IOException 85: { 86: socket.close(); 87: } 88: 89: public ComsatInfo read() 90: throws IOException 91: { 92: byte[] buf = new byte[socket.getReceiveBufferSize()]; 93: int len = buf.length; 94: DatagramPacket packet = new DatagramPacket(buf, len); 95: socket.receive(packet); 96: buf = packet.getData(); 97: len = packet.getLength(); 98: String data = new String(buf, 0, len, "ISO-8859-1"); 99: 100: ComsatInfo info = new ComsatInfo(); 101: StringTokenizer st = new StringTokenizer(data, "\n"); 102: String mailbox = st.nextToken(); 103: info.setMailbox(mailbox); 104: boolean inBody = false; 105: String lastHeader = null; 106: while (st.hasMoreTokens()) 107: { 108: String line = st.nextToken(); 109: if (inBody) 110: { 111: String body = info.getBody(); 112: if (body == null) 113: { 114: body = line; 115: } 116: else 117: { 118: body += "\n" + line; 119: } 120: info.setBody(body); 121: } 122: else 123: { 124: if (line.length() == 0) 125: { 126: inBody = true; 127: } 128: else 129: { 130: int ci = line.indexOf(':'); 131: if (ci != -1) 132: { 133: lastHeader = line.substring(0, ci); 134: info.setHeader(lastHeader, 135: line.substring(ci + 1).trim()); 136: } 137: else 138: { 139: String val = info.getHeader(lastHeader); 140: val += "\n" + line; 141: info.setHeader(lastHeader, val); 142: } 143: } 144: } 145: } 146: return info; 147: } 148: 149: }