From 5b5ca32a22e2e8e95c9bca86ce23d19c4a69f83d Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Mon, 2 Apr 2018 16:47:02 +0300
Subject: xmpp: move to library project

---
 .../com/juick/server/xmpp/router/XMPPRouter.java   | 176 +++++++++++++++++++++
 1 file changed, 176 insertions(+)
 create mode 100644 juick-server-xmpp/src/main/java/com/juick/server/xmpp/router/XMPPRouter.java

(limited to 'juick-server-xmpp/src/main/java/com/juick/server/xmpp/router/XMPPRouter.java')

diff --git a/juick-server-xmpp/src/main/java/com/juick/server/xmpp/router/XMPPRouter.java b/juick-server-xmpp/src/main/java/com/juick/server/xmpp/router/XMPPRouter.java
new file mode 100644
index 00000000..a262e941
--- /dev/null
+++ b/juick-server-xmpp/src/main/java/com/juick/server/xmpp/router/XMPPRouter.java
@@ -0,0 +1,176 @@
+package com.juick.server.xmpp.router;
+
+import com.juick.server.XMPPServer;
+import com.juick.server.xmpp.s2s.BasicXmppSession;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+import org.xmlpull.v1.XmlPullParserException;
+import rocks.xmpp.addr.Jid;
+import rocks.xmpp.core.stanza.model.Stanza;
+import rocks.xmpp.util.XmppUtils;
+
+import javax.annotation.PostConstruct;
+import javax.annotation.PreDestroy;
+import javax.inject.Inject;
+import javax.xml.bind.JAXBException;
+import javax.xml.bind.Unmarshaller;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamWriter;
+import java.io.IOException;
+import java.io.StringReader;
+import java.io.StringWriter;
+import java.net.ServerSocket;
+import java.net.Socket;
+import java.net.SocketException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+import java.util.concurrent.ExecutorService;
+
+@Component
+public class XMPPRouter implements StreamHandler {
+    private static final Logger logger = LoggerFactory.getLogger(XMPPRouter.class);
+
+    @Inject
+    private ExecutorService service;
+
+    private final List<StreamComponentServer> connections = Collections.synchronizedList(new ArrayList<>());
+
+    private ServerSocket listener;
+
+    @Inject
+    private BasicXmppSession session;
+
+    @Value("${router_port:5347}")
+    private int routerPort;
+
+    @Inject
+    private XMPPServer xmppServer;
+
+    @PostConstruct
+    public void init() {
+        logger.info("component router initialized");
+        service.submit(() -> {
+            try {
+                listener = new ServerSocket(routerPort);
+                logger.info("component router listening on {}", routerPort);
+                while (!listener.isClosed()) {
+                    if (Thread.currentThread().isInterrupted()) break;
+                    Socket socket = listener.accept();
+                    service.submit(() -> {
+                        try {
+                            StreamComponentServer client = new StreamComponentServer(socket.getInputStream(), socket.getOutputStream(), "secret");
+                            addConnectionIn(client);
+                            client.setHandler(this);
+                            client.connect();
+                        } catch (IOException e) {
+                            logger.error("component error", e);
+                        } catch (XmlPullParserException e) {
+                            e.printStackTrace();
+                        }
+                    });
+                }
+            } catch (SocketException e) {
+                // shutdown
+            } catch (IOException e) {
+                logger.warn("io exception", e);
+            }
+        });
+    }
+
+    @PreDestroy
+    public void close() throws Exception {
+        if (!listener.isClosed()) {
+            listener.close();
+        }
+        synchronized (getConnections()) {
+            for (Iterator<StreamComponentServer> i = getConnections().iterator(); i.hasNext(); ) {
+                StreamComponentServer c = i.next();
+                c.logoff();
+                i.remove();
+            }
+        }
+        service.shutdown();
+        logger.info("XMPP router destroyed");
+    }
+
+    private void addConnectionIn(StreamComponentServer c) {
+        synchronized (getConnections()) {
+            getConnections().add(c);
+        }
+    }
+
+    private void sendOut(Stanza s) {
+        try {
+            StringWriter stanzaWriter = new StringWriter();
+            XMLStreamWriter xmppStreamWriter = XmppUtils.createXmppStreamWriter(
+                    session.getConfiguration().getXmlOutputFactory().createXMLStreamWriter(stanzaWriter));
+            session.createMarshaller().marshal(s, xmppStreamWriter);
+            xmppStreamWriter.flush();
+            xmppStreamWriter.close();
+            String xml = stanzaWriter.toString();
+            logger.info("XMPPRouter (out): {}", xml);
+            sendOut(s.getTo().getDomain(), xml);
+        } catch (XMLStreamException | JAXBException e1) {
+            logger.info("jaxb exception", e1);
+        }
+    }
+
+    private void sendOut(String hostname, String xml) {
+        boolean haveAnyConn = false;
+
+        StreamComponentServer connOut = null;
+        synchronized (getConnections()) {
+            for (StreamComponentServer c : getConnections()) {
+                if (c.to != null && c.to.getDomain().equals(hostname)) {
+                    if (c.isLoggedIn()) {
+                        connOut = c;
+                        break;
+                    }
+                }
+            }
+        }
+        if (connOut != null) {
+            connOut.send(xml);
+            return;
+        }
+        xmppServer.sendOut(Jid.of(hostname), xml);
+
+    }
+
+    public List<StreamComponentServer> getConnections() {
+        return connections;
+    }
+
+    private Stanza parse(String xml) {
+        try {
+            Unmarshaller unmarshaller = session.createUnmarshaller();
+            return (Stanza)unmarshaller.unmarshal(new StringReader(xml));
+        } catch (JAXBException e) {
+            logger.error("JAXB exception", e);
+        }
+        return null;
+    }
+    @Override
+    public void stanzaReceived(String stanza) {
+        sendOut(parse(stanza));
+    }
+
+    @Override
+    public void ready() {
+
+    }
+
+    @Override
+    public void fail(Exception e) {
+
+    }
+
+    @Override
+    public boolean filter(Jid jid, Jid jid1) {
+        return false;
+    }
+}
\ No newline at end of file
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