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JDBC driver for MariaDB and MySQL
/*
*
* MariaDB Client for Java
*
* Copyright (c) 2012-2014 Monty Program Ab.
* Copyright (c) 2015-2019 MariaDB Ab.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library 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 Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License along
* with this library; if not, write to Monty Program Ab [email protected].
*
* This particular MariaDB Client for Java file is work
* derived from a Drizzle-JDBC. Drizzle-JDBC file which is covered by subject to
* the following copyright and notice provisions:
*
* Copyright (c) 2009-2011, Marcus Eriksson
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this list
* of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* Neither the name of the driver nor the names of its contributors may not be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
*/
package org.mariadb.jdbc.internal.com.read;
import org.mariadb.jdbc.internal.*;
import org.mariadb.jdbc.internal.io.input.*;
import org.mariadb.jdbc.internal.util.*;
import java.io.*;
import java.nio.charset.*;
import java.sql.*;
import static org.mariadb.jdbc.internal.com.Packet.*;
public class ReadInitialHandShakePacket {
/* MDEV-4088/CONJ-32 : in 10.0, the real version string maybe prefixed with "5.5.5-",
* to workaround bugs in Oracle MySQL replication
*/
private static final String MARIADB_RPL_HACK_PREFIX = "5.5.5-";
private final byte protocolVersion;
private final long serverThreadId;
private final long serverCapabilities;
private final byte serverLanguage;
private final short serverStatus;
private final byte[] seed;
private String serverVersion;
private String authenticationPluginType = "";
private boolean serverMariaDb;
/**
* Read database initial stream.
*
* @param reader packetFetcher
* @throws IOException if a connection error occur
* @throws SQLException if received an error packet
*/
public ReadInitialHandShakePacket(final PacketInputStream reader)
throws IOException, SQLException {
Buffer buffer = reader.getPacket(true);
if (buffer.getByteAt(0) == ERROR) {
ErrorPacket errorPacket = new ErrorPacket(buffer);
throw new SQLException(errorPacket.getMessage());
}
protocolVersion = buffer.readByte();
serverVersion = buffer.readStringNullEnd(StandardCharsets.US_ASCII);
serverThreadId = buffer.readInt();
final byte[] seed1 = buffer.readRawBytes(8);
buffer.skipByte();
int serverCapabilities2FirstBytes = buffer.readShort() & 0x0000ffff;
serverLanguage = buffer.readByte();
serverStatus = buffer.readShort();
int serverCapabilities4FirstBytes = serverCapabilities2FirstBytes + (buffer.readShort() << 16);
int saltLength = 0;
if ((serverCapabilities4FirstBytes & MariaDbServerCapabilities.PLUGIN_AUTH) != 0) {
saltLength = Math.max(12, buffer.readByte() - 9);
} else {
buffer.skipByte();
}
buffer.skipBytes(6);
// MariaDB additional capabilities.
// Filled only if MariaDB server 10.2+
long mariaDbAdditionalCapacities = buffer.readInt();
if ((serverCapabilities4FirstBytes & MariaDbServerCapabilities.SECURE_CONNECTION) != 0) {
final byte[] seed2;
if (saltLength > 0) {
seed2 = buffer.readRawBytes(saltLength);
} else {
// for servers before 5.5 version
seed2 = buffer.readBytesNullEnd();
}
seed = Utils.copyWithLength(seed1, seed1.length + seed2.length);
System.arraycopy(seed2, 0, seed, seed1.length, seed2.length);
// reader.skipByte();
} else {
seed = Utils.copyWithLength(seed1, seed1.length);
}
buffer.skipByte();
/*
* check for MariaDB 10.x replication hack , remove fake prefix if needed
* (see comments about MARIADB_RPL_HACK_PREFIX)
*/
if (serverVersion.startsWith(MARIADB_RPL_HACK_PREFIX)) {
serverMariaDb = true;
serverVersion = serverVersion.substring(MARIADB_RPL_HACK_PREFIX.length());
} else {
serverMariaDb = this.serverVersion.contains("MariaDB");
}
// since MariaDB 10.2
if ((serverCapabilities4FirstBytes & MariaDbServerCapabilities.CLIENT_MYSQL) == 0) {
serverCapabilities =
(serverCapabilities4FirstBytes & 0xffffffffL) + (mariaDbAdditionalCapacities << 32);
serverMariaDb = true;
} else {
serverCapabilities = serverCapabilities4FirstBytes & 0xffffffffL;
}
if ((serverCapabilities4FirstBytes & MariaDbServerCapabilities.PLUGIN_AUTH) != 0) {
authenticationPluginType = buffer.readStringNullEnd(StandardCharsets.US_ASCII);
}
}
@Override
public String toString() {
return protocolVersion
+ ":"
+ serverVersion
+ ":"
+ serverThreadId
+ ":"
+ new String(seed)
+ ":"
+ serverCapabilities
+ ":"
+ serverLanguage
+ ":"
+ serverStatus;
}
public String getServerVersion() {
return serverVersion;
}
public byte getProtocolVersion() {
return protocolVersion;
}
public long getServerThreadId() {
return serverThreadId;
}
public byte[] getSeed() {
return seed;
}
public long getServerCapabilities() {
return serverCapabilities;
}
public byte getServerLanguage() {
return serverLanguage;
}
public short getServerStatus() {
return serverStatus;
}
public String getAuthenticationPluginType() {
return authenticationPluginType;
}
public boolean isServerMariaDb() {
return serverMariaDb;
}
}