+++ /dev/null
-package be.nikiroo.utils.serial.server;
-
-import java.io.ByteArrayInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.lang.reflect.Array;
-import java.net.Socket;
-import java.net.UnknownHostException;
-
-import be.nikiroo.utils.StringUtils;
-import be.nikiroo.utils.TraceHandler;
-import be.nikiroo.utils.Version;
-import be.nikiroo.utils.serial.Importer;
-
-/**
- * This class implements a simple server that can bridge two other
- * {@link Server}s.
- * <p>
- * It can, of course, inspect the data that goes through it (by default, it
- * prints traces of the data).
- * <p>
- * Note: this {@link ServerBridge} has to be discarded after use (cannot be
- * started twice).
- *
- * @author niki
- */
-public class ServerBridge extends Server {
- private final String forwardToHost;
- private final int forwardToPort;
- private final String forwardToKey;
-
- /**
- * Create a new server that will start listening on the network when
- * {@link ServerBridge#start()} is called.
- *
- * @param port
- * the port to listen on, or 0 to assign any unallocated port
- * found (which can later on be queried via
- * {@link ServerBridge#getPort()}
- * @param key
- * an optional key to encrypt all the communications (if NULL,
- * everything will be sent in clear text)
- * @param forwardToHost
- * the host server to forward the calls to
- * @param forwardToPort
- * the host port to forward the calls to
- * @param forwardToKey
- * an optional key to encrypt all the communications (if NULL,
- * everything will be sent in clear text)
- *
- * @throws IOException
- * in case of I/O error
- * @throws UnknownHostException
- * if the IP address of the host could not be determined
- * @throws IllegalArgumentException
- * if the port parameter is outside the specified range of valid
- * port values, which is between 0 and 65535, inclusive
- */
- public ServerBridge(int port, String key, String forwardToHost,
- int forwardToPort, String forwardToKey) throws IOException {
- super(port, key);
- this.forwardToHost = forwardToHost;
- this.forwardToPort = forwardToPort;
- this.forwardToKey = forwardToKey;
- }
-
- /**
- * Create a new server that will start listening on the network when
- * {@link ServerBridge#start()} is called.
- *
- * @param name
- * the server name (only used for debug info and traces)
- * @param port
- * the port to listen on
- * @param key
- * an optional key to encrypt all the communications (if NULL,
- * everything will be sent in clear text)
- * @param forwardToHost
- * the host server to forward the calls to
- * @param forwardToPort
- * the host port to forward the calls to
- * @param forwardToKey
- * an optional key to encrypt all the communications (if NULL,
- * everything will be sent in clear text) use an SSL connection
- * for the forward server or not
- *
- * @throws IOException
- * in case of I/O error
- * @throws UnknownHostException
- * if the IP address of the host could not be determined
- * @throws IllegalArgumentException
- * if the port parameter is outside the specified range of valid
- * port values, which is between 0 and 65535, inclusive
- */
- public ServerBridge(String name, int port, String key,
- String forwardToHost, int forwardToPort, String forwardToKey)
- throws IOException {
- super(name, port, key);
- this.forwardToHost = forwardToHost;
- this.forwardToPort = forwardToPort;
- this.forwardToKey = forwardToKey;
- }
-
- /**
- * The traces handler for this {@link Server}.
- * <p>
- * The trace levels are handled as follow:
- * <ul>
- * <li>1: it will only print basic IN/OUT messages with length</li>
- * <li>2: it will try to interpret it as an object (SLOW) and print the
- * object class if possible</li>
- * <li>3: it will try to print the {@link Object#toString()} value, or the
- * data if it is not an object</li>
- * <li>4: it will also print the unzipped serialised value if it is an
- * object</li>
- * </ul>
- *
- * @param tracer
- * the new traces handler
- */
- @Override
- public void setTraceHandler(TraceHandler tracer) {
- super.setTraceHandler(tracer);
- }
-
- @Override
- protected ConnectActionServer createConnectActionServer(Socket s) {
- // Bad impl, not up to date (should work, but not efficient)
- return new ConnectActionServerString(s, key) {
- @Override
- public void action(Version clientVersion) throws Exception {
- onClientContact(clientVersion);
- final ConnectActionServerString bridge = this;
-
- try {
- new ConnectActionClientString(forwardToHost, forwardToPort,
- forwardToKey) {
- @Override
- public void action(Version serverVersion)
- throws Exception {
- onServerContact(serverVersion);
-
- for (String fromClient = bridge.rec(); fromClient != null; fromClient = bridge
- .rec()) {
- onRec(fromClient);
- String fromServer = send(fromClient);
- onSend(fromServer);
- bridge.send(fromServer);
- }
-
- getTraceHandler().trace("=== DONE", 1);
- getTraceHandler().trace("", 1);
- }
-
- @Override
- protected void onError(Exception e) {
- ServerBridge.this.onError(e);
- }
- }.connect();
- } catch (Exception e) {
- ServerBridge.this.onError(e);
- }
- }
- };
- }
-
- /**
- * This is the method that is called each time a client contact us.
- */
- protected void onClientContact(Version clientVersion) {
- getTraceHandler().trace(">>> CLIENT " + clientVersion);
- }
-
- /**
- * This is the method that is called each time a client contact us.
- */
- protected void onServerContact(Version serverVersion) {
- getTraceHandler().trace("<<< SERVER " + serverVersion);
- getTraceHandler().trace("");
- }
-
- /**
- * This is the method that is called each time a client contact us.
- *
- * @param data
- * the data sent by the client
- */
- protected void onRec(String data) {
- trace(">>> CLIENT", data);
- }
-
- /**
- * This is the method that is called each time the forwarded server contact
- * us.
- *
- * @param data
- * the data sent by the client
- */
- protected void onSend(String data) {
- trace("<<< SERVER", data);
- }
-
- @Override
- protected ConnectActionClient getConnectionToMe()
- throws UnknownHostException, IOException {
- return new ConnectActionClientString(new Socket((String) null,
- getPort()), key);
- }
-
- @Override
- public void run() {
- getTraceHandler().trace(
- getName() + ": will forward to " + forwardToHost + ":"
- + forwardToPort + " ("
- + (forwardToKey != null ? "encrypted" : "plain text")
- + ")");
- super.run();
- }
-
- /**
- * Trace the data with the given prefix.
- *
- * @param prefix
- * the prefix (client, server, version...)
- * @param data
- * the data to trace
- */
- private void trace(String prefix, String data) {
- int size = data == null ? 0 : data.length();
- String ssize = StringUtils.formatNumber(size) + "bytes";
-
- getTraceHandler().trace(prefix + ": " + ssize, 1);
-
- if (getTraceHandler().getTraceLevel() >= 2) {
- try {
- while (data.startsWith("ZIP:") || data.startsWith("B64:")) {
- if (data.startsWith("ZIP:")) {
- data = StringUtils.unzip64s(data.substring(4));
- } else if (data.startsWith("B64:")) {
- data = StringUtils.unzip64s(data.substring(4));
- }
- }
-
- InputStream stream = new ByteArrayInputStream(
- StringUtils.getBytes(data));
- try {
- Object obj = new Importer().read(stream).getValue();
- if (obj == null) {
- getTraceHandler().trace("NULL", 2);
- getTraceHandler().trace("NULL", 3);
- getTraceHandler().trace("NULL", 4);
- } else {
- if (obj.getClass().isArray()) {
- getTraceHandler().trace(
- "(" + obj.getClass() + ") with "
- + Array.getLength(obj)
- + "element(s)", 3);
- } else {
- getTraceHandler().trace("(" + obj.getClass() + ")",
- 2);
- }
- getTraceHandler().trace("" + obj.toString(), 3);
- getTraceHandler().trace(data, 4);
- }
- } finally {
- stream.close();
- }
- } catch (NoSuchMethodException e) {
- getTraceHandler().trace("(not an object)", 2);
- getTraceHandler().trace(data, 3);
- getTraceHandler().trace("", 4);
- } catch (NoSuchFieldException e) {
- getTraceHandler().trace(
- "(incompatible: " + e.getMessage() + ")", 2);
- getTraceHandler().trace(data, 3);
- getTraceHandler().trace("", 4);
- } catch (ClassNotFoundException e) {
- getTraceHandler().trace(
- "(unknown object: " + e.getMessage() + ")", 2);
- getTraceHandler().trace(data, 3);
- getTraceHandler().trace("", 4);
- } catch (Exception e) {
- getTraceHandler().trace(
- "(decode error: " + e.getMessage() + ")", 2);
- getTraceHandler().trace(data, 3);
- getTraceHandler().trace("", 4);
- }
-
- getTraceHandler().trace("", 2);
- }
- }
-}
git://git.nikiroo.be / fanfix.git / blobdiff