1 files changed, 155 insertions, 0 deletions
diff --git a/src/ProxyClient.java b/src/ProxyClient.java
new file mode 100644
index 0000000..3f616c5
--- /dev/null
+++ b/src/ProxyClient.java
@@ -0,0 +1,155 @@
+/**
+ * ProxyClient: Ivy relay, first attempt
+ *
+ * @author	Yannick Jestin
+ * @author	<a href="http://www.tls.cena.fr/products/ivy/">http://www.tls.cena.fr/products/ivy/</a>
+ *
+ * (c) ENAC
+ *
+ * changelog:
+ *   1.2.12
+ */
+package fr.dgac.ivy ;
+import java.io.*;
+import java.net.*;
+import java.util.* ;
+import gnu.getopt.Getopt;
+import org.apache.regexp.*;
+
+public class ProxyClient extends Ivy {
+
+  private Socket clientSocket;
+  private PrintWriter out;
+  private BufferedReader in;
+  private boolean isRunning=false;
+  private static boolean debug = (System.getProperty("IVY_DEBUG")!=null) ;
+  private volatile Thread clientThread;// volatile to ensure the quick communication
+  private Hashtable id=new Hashtable();
+  private Vector ghosts = new Vector();
+
+  public static int DEFAULT_SERVICE_PORT = 3456 ;
+  public static final String DEFAULTNAME = "ProxyClient";
+  public static final String helpmsg = "usage: java fr.dgac.ivy.ProxyClient [options] hostname\n\t-b BUS\tspecifies the Ivy bus domain\n\t-p\tport number, default "+DEFAULT_SERVICE_PORT+"\n\t-n ivyname (default "+DEFAULTNAME+")\n\t-q\tquiet, no tty output\n\t-d\tdebug\n\t-h\thelp\ncontacts the ProxyMaster on hostname\n";
+
+  private static String name = DEFAULTNAME;
+  public static void main(String[] args) {
+    Ivy bus;
+    Getopt opt = new Getopt("ProxyClient",args,"n:b:dqp:h");
+    int c;
+    int servicePort = DEFAULT_SERVICE_PORT;
+    boolean quiet = false;
+    String domain=Ivy.getDomain(null);
+    while ((c = opt.getopt()) != -1) switch (c) {
+    case 'n':
+      name=opt.getOptarg();
+      break;
+    case 'b':
+      domain=opt.getOptarg();
+      break;
+    case 'q':
+      quiet=true;
+      break;
+    case 'd':
+      Properties sysProp = System.getProperties();
+      sysProp.put("IVY_DEBUG","yes");
+      break;
+    case 'p':
+      String s="";
+      try {
+        servicePort = Integer.parseInt(s=opt.getOptarg());
+      } catch (NumberFormatException nfe) {
+        System.out.println("Invalid port number: " + s );
+	System.exit(0);
+      }
+      break;
+    case 'h':
+    default:
+      System.out.println(helpmsg);
+      System.exit(0);
+    }
+    String hostname="localhost";
+    try {
+      ProxyClient pc = new ProxyClient(hostname,servicePort);
+      if (!quiet) System.out.println("broadcasting on "+pc.domains(domain));
+      if (!quiet) System.out.println("contacting tcp:"+hostname+":"+servicePort);
+      pc.start(domain);
+      System.out.println("client running...");
+    } catch (IvyException ie) {
+      System.out.println("error, can't connect to Ivy");
+      ie.printStackTrace();
+      System.exit(-1);
+    } catch (IOException ioe) {
+      System.out.println("error, can't connect to the proxy master");
+      ioe.printStackTrace();
+      System.exit(-1);
+    }
+  }
+
+  public ProxyClient(String hostname,int servicePort) throws IOException {
+    super(name,name+" ready",null);
+    clientSocket = new Socket(hostname,servicePort) ;
+    in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
+    out = new PrintWriter(new OutputStreamWriter(clientSocket.getOutputStream()));
+    clientThread=new Thread(new Servicer());
+    clientThread.start();
+  }
+  
+  RE getId=new RE("^ID id=(.*) value=(.*)");
+  RE fwd=new RE("^Forward id=(.*) buffer=(.*)");
+  void parseMsg(String msg) {
+    System.out.println("parsing "+msg);
+    if (getId.match(msg)) {
+      id.put(getId.getParen(1),getId.getParen(2));
+    } else if (fwd.match(msg)) {
+      // received a forward request
+      // TODO give it to the puppet
+    } else {
+      System.out.println("unknown message "+msg);
+    }
+  }
+
+  class Servicer implements Runnable {
+    public void run() {
+      Thread thisThread = Thread.currentThread();
+      traceDebug("Thread started");
+      String msg = null;
+      try {
+        while (true) {
+          msg=in.readLine();
+          if (msg==null) break;
+	  parseMsg(msg);
+        }
+      } catch (IOException ioe) {
+        traceDebug("Subreader exception ...");
+        ioe.printStackTrace();
+        System.exit(0);
+      }
+      traceDebug("Subreader Thread stopped");
+      System.out.println("ProxyClient disconnected");
+    }
+  }
+
+  protected IvyClient createIvyClient(Socket s,int port, boolean domachin) throws IOException {
+    String key = getWBUId();
+    System.out.println("asking for a key");
+    out.println("GetID id="+key); // asks a centralized ID from ProxyMaster
+    out.flush();
+    try { // waits for the answer
+      while (id.get(key)==null) { Thread.sleep(200); }
+    } catch (InterruptedException ie) {
+      ie.printStackTrace();
+    }
+    System.out.println("key received");
+    return new Ghost(this,s,port,domachin,(String)id.get(key),this);
+  }
+
+  private void forward(String id,String buffer) {
+    out.println("Forward id="+id+" buffer="+buffer);
+    out.flush();
+  }
+
+  private static void traceDebug(String s){
+    if (debug) System.out.println("-->ProxyClient "+name+"<-- "+s);
+  }
+
+}