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package org.openslx.thrifthelper;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.net.SocketException;
import java.nio.ByteBuffer;
import java.nio.charset.StandardCharsets;
import javax.net.ssl.SSLException;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.thrift.TException;
import org.apache.thrift.protocol.TBinaryProtocol;
import org.apache.thrift.protocol.TMessage;
import org.apache.thrift.protocol.TProtocol;
import org.apache.thrift.protocol.TProtocolException;
import org.apache.thrift.protocol.TProtocolFactory;
import org.apache.thrift.transport.TSocket;
import org.apache.thrift.transport.TTransport;
import org.apache.thrift.transport.TTransportException;
import org.apache.thrift.transport.layered.TLayeredTransport;
/**
* Binary protocol implementation for thrift.
* Will not read messages bigger than 12MiB.
*
*/
public class TBinaryProtocolSafe extends TBinaryProtocol
{
private final static Logger LOGGER = LogManager.getLogger( ThriftHandler.class );
/**
* Factory
*/
public static class Factory implements TProtocolFactory
{
/**
* Version for serialization.
*/
private static final long serialVersionUID = 6896537370338823740L;
protected boolean strictRead_ = false;
protected boolean strictWrite_ = true;
public Factory()
{
this( false, true );
}
public Factory(boolean strictRead, boolean strictWrite)
{
strictRead_ = strictRead;
strictWrite_ = strictWrite;
}
public TProtocol getProtocol( TTransport trans )
{
return new TBinaryProtocolSafe( trans, strictRead_, strictWrite_ );
}
}
private static final int maxLen = 12 * 1024 * 1024; // 12 MiB
/**
* Constructor
*/
public TBinaryProtocolSafe(TTransport trans)
{
this( trans, false, true );
}
public TBinaryProtocolSafe(TTransport trans, boolean strictRead, boolean strictWrite)
{
super( trans, maxLen, maxLen, strictRead, strictWrite );
}
/*
* Reading methods.
*/
@Override
public TMessage readMessageBegin() throws TException
{
int size;
try {
size = readI32();
} catch ( TTransportException e ) {
// Do this to suppress certain SSL handshake errors that result from port scanning and service probing
if ( e.getCause() instanceof SSLException ) {
String m = e.getCause().getMessage();
// We still want SSL errors that help diagnosing more specific SSL errors that relate to actual
// SSL handshake attempts, like incompatible TLS versions or ciphers.
if ( !m.contains( "Remote host terminated the handshake" )
&& !m.contains( "Unsupported or unrecognized SSL message" ) ) {
LOGGER.warn( getIp() + m );
}
// Fake an END_OF_FILE exception, as the logException() method in the server class will
// ignore there. Let's hope it will stay ignored in the future.
throw new TTransportException( TTransportException.END_OF_FILE );
} else if ( e.getCause() instanceof SocketException
&& ( e.getCause().getMessage().contains( " timed out" )
|| e.getCause().getMessage().contains( "Connection reset" )
|| e.getCause().getMessage().contains( "Connection or inbound" ) ) ) {
// Faaaake
throw new TTransportException( TTransportException.END_OF_FILE );
} else if ( e.getMessage().contains( "larger than max length" ) || e.getMessage().contains( "Read a negative frame size" ) ) {
// Also fake, since this one prints a whole stack trace compared to the other
// message by AbstractNonblockingServer
LOGGER.debug( e.getMessage(), e );
throw new TTransportException( TTransportException.END_OF_FILE );
}
throw e;
}
if ( size > maxLen )
throw new TProtocolException( TProtocolException.SIZE_LIMIT, getIp() + "Payload too big." );
if ( size < 0 ) {
int version = size & VERSION_MASK;
if ( version != VERSION_1 ) {
LOGGER.warn( getIp() + "Bad version (" + version + ") in readMessageBegin" );
throw new TTransportException( TTransportException.END_OF_FILE );
}
return new TMessage( readString(), (byte) ( size & 0x000000ff ), readI32() );
} else {
if ( strictRead_ ) {
throw new TProtocolException( TProtocolException.BAD_VERSION, "Missing version in readMessageBegin, old client?" );
}
return new TMessage( readStringBody( size ), readByte(), readI32() );
}
}
private String getIp()
{
TTransport t = trans_;
while ( t instanceof TLayeredTransport ) {
t = ( (TLayeredTransport)t ).getInnerTransport();
}
InetAddress ia = null;
if ( t instanceof TSocket ) {
SocketAddress sa = ( (TSocket)t ).getSocket().getRemoteSocketAddress();
if ( sa != null && ( sa instanceof InetSocketAddress ) )
ia = ( (InetSocketAddress)sa ).getAddress();
if ( ia == null )
ia = ( (TSocket)t ).getSocket().getInetAddress();
} else {
LOGGER.debug( "getIp(" + t.getClass().getSimpleName() + ")" );
}
if ( ia == null )
return "";
return ia.getHostAddress() + ": ";
}
@Override
public String readString() throws TException
{
int size = readI32();
if ( size > maxLen )
throw new TProtocolException( TProtocolException.SIZE_LIMIT, "Payload too big." );
if ( trans_.getBytesRemainingInBuffer() >= size ) {
String s = new String( trans_.getBuffer(), trans_.getBufferPosition(), size, StandardCharsets.UTF_8 );
trans_.consumeBuffer( size );
return s;
}
return readStringBody( size );
}
@Override
public ByteBuffer readBinary() throws TException
{
int size = readI32();
if ( size > maxLen )
throw new TProtocolException( TProtocolException.SIZE_LIMIT, "Payload too big." );
if ( trans_.getBytesRemainingInBuffer() >= size ) {
ByteBuffer bb = ByteBuffer.wrap( trans_.getBuffer(), trans_.getBufferPosition(), size );
trans_.consumeBuffer( size );
return bb;
}
byte[] buf = new byte[ size ];
trans_.readAll( buf, 0, size );
return ByteBuffer.wrap( buf );
}
}
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