/* * Copyright (c) 2013, OpenCloudDB/MyCAT and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software;Designed and Developed mainly by many Chinese * opensource volunteers. you can redistribute it and/or modify it under the * terms of the GNU General Public License version 2 only, as published by the * Free Software Foundation. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Any questions about this component can be directed to it's project Web address * https://code.google.com/p/opencloudb/. * */ package org.opencloudb.heartbeat; import org.opencloudb.mysql.CharsetUtil; import org.opencloudb.mysql.SecurityUtil; import org.opencloudb.net.ConnectionException; import org.opencloudb.net.NIOHandler; import org.opencloudb.net.mysql.EOFPacket; import org.opencloudb.net.mysql.ErrorPacket; import org.opencloudb.net.mysql.HandshakePacket; import org.opencloudb.net.mysql.OkPacket; import org.opencloudb.net.mysql.Reply323Packet; /** * @author mycat */ public class MySQLDetectorAuthenticator implements NIOHandler { private final MySQLDetector source; public MySQLDetectorAuthenticator(MySQLDetector source) { this.source = source; } @Override public void handle(byte[] data) { MySQLDetector source = this.source; switch (data[4]) { case OkPacket.FIELD_COUNT: HandshakePacket packet = source.getHandshake(); if (packet == null) { processHandshakePackage(data, source); // 发送认证数据包 source.authenticate(); return; } source.setHandler(new MySQLDetectorHandler(source)); source.setAuthenticated(true); source.heartbeat();// 成功后发起心跳。 break; case ErrorPacket.FIELD_COUNT: ErrorPacket err = new ErrorPacket(); err.read(data); String errMsg = new String(err.message); source.close(errMsg); throw new ConnectionException(err.errno, errMsg); case EOFPacket.FIELD_COUNT: auth323(data[3]); break; default: packet = source.getHandshake(); if (packet == null) { processHandshakePackage(data, source); // 发送认证数据包 source.authenticate(); break; } else { throw new RuntimeException("Unknown packet"); } } } private void processHandshakePackage(byte[] data, MySQLDetector source) { HandshakePacket hsp; // 设置握手数据包 hsp = new HandshakePacket(); hsp.read(data); source.setHandshake(hsp); // 设置字符集编码 int charsetIndex = (hsp.serverCharsetIndex & 0xff); String charset = CharsetUtil.getCharset(charsetIndex); if (charset != null) { source.setCharsetIndex(charsetIndex); source.setCharset(charset); } else { throw new RuntimeException("Unknown charsetIndex:" + charsetIndex); } } /** * 发送323响应认证数据包 */ private void auth323(byte packetId) { // 发送323响应认证数据包 Reply323Packet r323 = new Reply323Packet(); r323.packetId = ++packetId; String pass = source.getPassword(); if (pass != null && pass.length() > 0) { byte[] seed = source.getHandshake().seed; r323.seed = SecurityUtil.scramble323(pass, new String(seed)) .getBytes(); } r323.write(source); } }