2 * jFCPlib - FcpConnectionHandler.java - Copyright © 2008 David Roden
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 package net.pterodactylus.fcp;
21 import java.io.IOException;
22 import java.io.InputStream;
23 import java.nio.ByteBuffer;
24 import java.nio.charset.Charset;
27 * Handles an FCP connection to a node.
29 * @author David ‘Bombe’ Roden <bombe@freenetproject.org>
31 class FcpConnectionHandler implements Runnable {
33 /** The underlying connection. */
34 private final FcpConnection fcpConnection;
36 /** The input stream from the node. */
37 private final InputStream remoteInputStream;
39 /** Whether to stop the connection handler. */
40 private boolean shouldStop;
42 /** Whether the next read line feed should be ignored. */
43 private boolean ignoreNextLinefeed;
46 * Creates a new connection handler that operates on the given connection
49 * @param fcpConnection
50 * The underlying FCP connection
51 * @param remoteInputStream
52 * The input stream from the node
54 public FcpConnectionHandler(FcpConnection fcpConnection, InputStream remoteInputStream) {
55 this.fcpConnection = fcpConnection;
56 this.remoteInputStream = remoteInputStream;
63 FcpMessage fcpMessage = null;
64 Throwable throwable = null;
72 String line = readLine();
73 System.out.println("read line: " + line);
77 if (line.length() == 0) {
81 if (fcpMessage == null) {
82 fcpMessage = new FcpMessage(line);
85 if ("EndMessage".equalsIgnoreCase(line) || "Data".equalsIgnoreCase(line)) {
86 fcpConnection.handleMessage(fcpMessage);
89 int equalSign = line.indexOf('=');
90 if (equalSign == -1) {
91 /* something's fishy! */
94 String field = line.substring(0, equalSign);
95 String value = line.substring(equalSign + 1);
96 assert fcpMessage != null: "fcp message is null";
97 fcpMessage.setField(field, value);
98 } catch (IOException ioe1) {
103 fcpConnection.handleDisconnect(throwable);
107 * Stops the connection handler.
110 synchronized (this) {
120 * Reads bytes from {@link #remoteInputStream} until ‘\r’ or ‘\n’ are
121 * encountered and decodes the read bytes using UTF-8.
123 * @return The decoded line
124 * @throws IOException
125 * if an I/O error occurs
127 private String readLine() throws IOException {
128 byte[] readBytes = new byte[512];
131 int nextByte = remoteInputStream.read();
132 if (nextByte == -1) {
133 if (readIndex == 0) {
138 if (nextByte == 10) {
139 if (!ignoreNextLinefeed) {
143 ignoreNextLinefeed = false;
144 if (nextByte == 13) {
145 ignoreNextLinefeed = true;
148 if (readIndex == readBytes.length) {
149 /* recopy & enlarge array */
150 byte[] newReadBytes = new byte[readBytes.length * 2];
151 System.arraycopy(readBytes, 0, newReadBytes, 0, readBytes.length);
152 readBytes = newReadBytes;
154 readBytes[readIndex++] = (byte) nextByte;
156 ByteBuffer byteBuffer = ByteBuffer.wrap(readBytes, 0, readIndex);
157 return Charset.forName("UTF-8").decode(byteBuffer).toString();