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org.mockserver.unification.PortUnificationHandler Maven / Gradle / Ivy
package org.mockserver.unification;
import io.netty.buffer.ByteBuf;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelPipeline;
import io.netty.handler.codec.ReplayingDecoder;
import io.netty.handler.codec.http.HttpContentDecompressor;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpServerCodec;
import io.netty.handler.codec.socksx.v4.Socks4ServerDecoder;
import io.netty.handler.codec.socksx.v4.Socks4ServerEncoder;
import io.netty.handler.codec.socksx.v5.Socks5InitialRequestDecoder;
import io.netty.handler.codec.socksx.v5.Socks5ServerEncoder;
import io.netty.handler.ssl.SslHandler;
import io.netty.util.AttributeKey;
import org.apache.commons.collections4.KeyValue;
import org.apache.commons.collections4.keyvalue.DefaultKeyValue;
import org.mockserver.callback.CallbackWebSocketServerHandler;
import org.mockserver.proxy.ProxyConfiguration;
import org.mockserver.configuration.ConfigurationProperties;
import org.mockserver.dashboard.DashboardWebSocketServerHandler;
import org.mockserver.lifecycle.LifeCycle;
import org.mockserver.logging.LoggingHandler;
import org.mockserver.logging.MockServerLogger;
import org.mockserver.mock.HttpStateHandler;
import org.mockserver.mockserver.MockServerHandler;
import org.mockserver.proxy.socks.Socks4ProxyHandler;
import org.mockserver.proxy.socks.Socks5ProxyHandler;
import org.mockserver.proxy.socks.SocksDetector;
import org.mockserver.codec.MockServerServerCodec;
import org.mockserver.socket.tls.SniHandler;
import org.slf4j.LoggerFactory;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.nio.charset.StandardCharsets;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import static java.util.Collections.unmodifiableSet;
import static org.mockserver.exception.ExceptionHandler.closeOnFlush;
import static org.mockserver.exception.ExceptionHandler.shouldNotIgnoreException;
import static org.mockserver.mockserver.MockServerHandler.LOCAL_HOST_HEADERS;
import static org.slf4j.event.Level.TRACE;
/**
* @author jamesdbloom
*/
public class PortUnificationHandler extends ReplayingDecoder {
private static final AttributeKey SSL_ENABLED_UPSTREAM = AttributeKey.valueOf("PROXY_SSL_ENABLED_UPSTREAM");
private static final AttributeKey SSL_ENABLED_DOWNSTREAM = AttributeKey.valueOf("SSL_ENABLED_DOWNSTREAM");
private static final Map, Set> localAddressesCache = new ConcurrentHashMap<>();
protected final MockServerLogger mockServerLogger;
private final LoggingHandler loggingHandler = new LoggingHandler(LoggerFactory.getLogger(PortUnificationHandler.class));
private final HttpContentLengthRemover httpContentLengthRemover = new HttpContentLengthRemover();
private final LifeCycle server;
private final HttpStateHandler httpStateHandler;
private final ProxyConfiguration proxyConfiguration;
public PortUnificationHandler(LifeCycle server, HttpStateHandler httpStateHandler, ProxyConfiguration proxyConfiguration) {
this.server = server;
this.mockServerLogger = httpStateHandler.getMockServerLogger();
this.httpStateHandler = httpStateHandler;
this.proxyConfiguration = proxyConfiguration;
}
public static void enableSslUpstreamAndDownstream(Channel channel) {
channel.attr(SSL_ENABLED_UPSTREAM).set(Boolean.TRUE);
channel.attr(SSL_ENABLED_DOWNSTREAM).set(Boolean.TRUE);
}
public static boolean isSslEnabledUpstream(Channel channel) {
if (channel.attr(SSL_ENABLED_UPSTREAM).get() != null) {
return channel.attr(SSL_ENABLED_UPSTREAM).get();
} else {
return false;
}
}
public static void enableSslDownstream(Channel channel) {
channel.attr(SSL_ENABLED_DOWNSTREAM).set(Boolean.TRUE);
}
public static void disableSslDownstream(Channel channel) {
channel.attr(SSL_ENABLED_DOWNSTREAM).set(Boolean.FALSE);
}
public static boolean isSslEnabledDownstream(Channel channel) {
if (channel.attr(SSL_ENABLED_DOWNSTREAM).get() != null) {
return channel.attr(SSL_ENABLED_DOWNSTREAM).get();
} else {
return false;
}
}
@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf msg, List out) {
if (SocksDetector.isSocks4(msg, actualReadableBytes())) {
enableSocks4(ctx, msg);
} else if (SocksDetector.isSocks5(msg, actualReadableBytes())) {
enableSocks5(ctx, msg);
} else if (isSsl(msg)) {
enableSsl(ctx, msg);
} else if (isHttp(msg)) {
switchToHttp(ctx, msg);
} else {
// Unknown protocol; discard everything and close the connection.
msg.clear();
ctx.flush();
ctx.close();
}
addLoggingHandler(ctx);
}
private void addLoggingHandler(ChannelHandlerContext ctx) {
if (mockServerLogger.isEnabled(TRACE)) {
loggingHandler.addLoggingHandler(ctx);
}
}
private boolean isSsl(ByteBuf buf) {
return SslHandler.isEncrypted(buf);
}
private boolean isHttp(ByteBuf msg) {
String method = msg.toString(msg.readerIndex(), 8, StandardCharsets.US_ASCII);
return method.startsWith("GET ") ||
method.startsWith("POST ") ||
method.startsWith("PUT ") ||
method.startsWith("HEAD ") ||
method.startsWith("OPTIONS ") ||
method.startsWith("PATCH ") ||
method.startsWith("DELETE ") ||
method.startsWith("TRACE ") ||
method.startsWith("CONNECT ");
}
private void enableSocks4(ChannelHandlerContext ctx, ByteBuf msg) {
enableSocks(ctx, msg, new Socks4ProxyHandler(server, mockServerLogger), Socks4ServerEncoder.INSTANCE, new Socks4ServerDecoder());
}
private void enableSocks5(ChannelHandlerContext ctx, ByteBuf msg) {
enableSocks(ctx, msg, new Socks5ProxyHandler(server, mockServerLogger), Socks5ServerEncoder.DEFAULT, new Socks5InitialRequestDecoder());
}
private void enableSocks(ChannelHandlerContext ctx, ByteBuf msg, ChannelHandler... channelHandlers) {
ChannelPipeline pipeline = ctx.pipeline();
for (ChannelHandler channelHandler : channelHandlers) {
pipeline.addFirst(channelHandler);
}
// re-unify (with SOCKS5 enabled)
ctx.pipeline().fireChannelRead(msg.readBytes(actualReadableBytes()));
}
private void enableSsl(ChannelHandlerContext ctx, ByteBuf msg) {
ChannelPipeline pipeline = ctx.pipeline();
pipeline.addFirst(new SniHandler());
enableSslUpstreamAndDownstream(ctx.channel());
// re-unify (with SSL enabled)
ctx.pipeline().fireChannelRead(msg.readBytes(actualReadableBytes()));
}
private void switchToHttp(ChannelHandlerContext ctx, ByteBuf msg) {
ChannelPipeline pipeline = ctx.pipeline();
addLastIfNotPresent(pipeline, new HttpServerCodec(
ConfigurationProperties.maxInitialLineLength(),
ConfigurationProperties.maxHeaderSize(),
ConfigurationProperties.maxChunkSize()
));
addLastIfNotPresent(pipeline, new HttpContentDecompressor());
addLastIfNotPresent(pipeline, httpContentLengthRemover);
addLastIfNotPresent(pipeline, new HttpObjectAggregator(Integer.MAX_VALUE));
if (mockServerLogger.isEnabled(TRACE)) {
addLastIfNotPresent(pipeline, loggingHandler);
}
addLastIfNotPresent(pipeline, new CallbackWebSocketServerHandler(httpStateHandler));
addLastIfNotPresent(pipeline, new DashboardWebSocketServerHandler(httpStateHandler));
addLastIfNotPresent(pipeline, new MockServerServerCodec(mockServerLogger, isSslEnabledUpstream(ctx.channel())));
addLastIfNotPresent(pipeline, new MockServerHandler(server, httpStateHandler, proxyConfiguration));
pipeline.remove(this);
ctx.channel().attr(LOCAL_HOST_HEADERS).set(getLocalAddresses(ctx));
// fire message back through pipeline
ctx.fireChannelRead(msg.readBytes(actualReadableBytes()));
}
private Set getLocalAddresses(ChannelHandlerContext ctx) {
SocketAddress localAddress = ctx.channel().localAddress();
Set localAddresses = null;
if (localAddress instanceof InetSocketAddress) {
InetSocketAddress inetSocketAddress = (InetSocketAddress) localAddress;
String portExtension = calculatePortExtension(inetSocketAddress, isSslEnabledUpstream(ctx.channel()));
DefaultKeyValue cacheKey = new DefaultKeyValue<>(inetSocketAddress, portExtension);
localAddresses = localAddressesCache.get(cacheKey);
if (localAddresses == null) {
localAddresses = calculateLocalAddresses(inetSocketAddress, portExtension);
localAddressesCache.put(cacheKey, localAddresses);
}
}
return (localAddresses == null) ? Collections.emptySet() : localAddresses;
}
private String calculatePortExtension(InetSocketAddress inetSocketAddress, boolean sslEnabledUpstream) {
String portExtension;
if (((inetSocketAddress.getPort() == 443) && sslEnabledUpstream)
|| ((inetSocketAddress.getPort() == 80) && !sslEnabledUpstream)) {
portExtension = "";
} else {
portExtension = ":" + inetSocketAddress.getPort();
}
return portExtension;
}
private Set calculateLocalAddresses(InetSocketAddress localAddress, String portExtension) {
InetAddress socketAddress = localAddress.getAddress();
Set localAddresses = new HashSet<>();
localAddresses.add(socketAddress.getHostAddress() + portExtension);
localAddresses.add(socketAddress.getCanonicalHostName() + portExtension);
localAddresses.add(socketAddress.getHostName() + portExtension);
localAddresses.add("localhost" + portExtension);
localAddresses.add("127.0.0.1" + portExtension);
return unmodifiableSet(localAddresses);
}
private void addLastIfNotPresent(ChannelPipeline pipeline, ChannelHandler channelHandler) {
if (pipeline.get(channelHandler.getClass()) == null) {
pipeline.addLast(channelHandler);
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
if (shouldNotIgnoreException(cause)) {
mockServerLogger.error("Exception caught by port unification handler -> closing pipeline " + ctx.channel(), cause);
}
closeOnFlush(ctx.channel());
}
}
