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DBusDaemon.java

/*
   D-Bus Java Implementation
   Copyright (c) 2005-2006 Matthew Johnson

   This program is free software; you can redistribute it and/or modify it
   under the terms of either the GNU Lesser General Public License Version 2 or the
   Academic Free Licence Version 2.1.

   Full licence texts are included in the COPYING file with this program.
*/
package org.freedesktop.dbus.bin;

import static org.freedesktop.dbus.Gettext._;

import org.freedesktop.DBus;
import org.freedesktop.dbus.AbstractConnection;
import org.freedesktop.dbus.BusAddress;
import org.freedesktop.dbus.DBusSignal;
import org.freedesktop.dbus.DirectConnection;
import org.freedesktop.dbus.Error;
import org.freedesktop.dbus.Marshalling;
import org.freedesktop.dbus.Message;
import org.freedesktop.dbus.MessageReader;
import org.freedesktop.dbus.MessageWriter;
import org.freedesktop.dbus.MethodCall;
import org.freedesktop.dbus.MethodReturn;
import org.freedesktop.dbus.Transport;
import org.freedesktop.dbus.UInt32;
import org.freedesktop.dbus.exceptions.DBusException;
import org.freedesktop.dbus.exceptions.DBusExecutionException;
import org.freedesktop.dbus.exceptions.FatalException;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.lang.ref.WeakReference;
import java.lang.reflect.InvocationTargetException;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.text.MessageFormat;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.Vector;

import cx.ath.matthew.debug.Debug;
import cx.ath.matthew.unix.UnixServerSocket;
import cx.ath.matthew.unix.UnixSocket;
import cx.ath.matthew.unix.UnixSocketAddress;

/**
 * A replacement DBusDaemon
 */
00057 public class DBusDaemon extends Thread
{
   public static final int QUEUE_POLL_WAIT = 500;
   static class Connstruct
   {
      public UnixSocket usock;
      public Socket tsock;
      public MessageReader min;
      public MessageWriter mout;
      public String unique;
      public Connstruct(UnixSocket sock)
      {
         this.usock = sock;
         min = new MessageReader(sock.getInputStream());
         mout = new MessageWriter(sock.getOutputStream());
      }
      public Connstruct(Socket sock) throws IOException
      {
         this.tsock = sock;
         min = new MessageReader(sock.getInputStream());
         mout = new MessageWriter(sock.getOutputStream());
      }
      public String toString()
      {
         return null == unique ? ":?-?" : unique;
      }
   }
   static class MagicMap<A, B>
   {
      private Map<A, B> m;
      private LinkedList<A> q;
      private String name;
      public MagicMap(String name)
      {
         m = new HashMap<A, B>();
         q = new LinkedList<A>();
         this.name = name;
      }
      public A head()
      {
         return q.getFirst();
      }
      public void putFirst(A a, B b)
      {
         if (Debug.debug) Debug.print("<"+name+"> Queueing {"+a+" => "+b+"}");
         m.put(a, b);
         q.addFirst(a);
      }
      public void putLast(A a, B b)
      {
         if (Debug.debug) Debug.print("<"+name+"> Queueing {"+a+" => "+b+"}");
         m.put(a, b);
         q.addLast(a);
      }
      public B remove(A a)
      {
         if (Debug.debug) Debug.print("<"+name+"> Removing {"+a+"}");
         q.remove(a);
         return m.remove(a);
      }
      public int size()
      {
         return q.size();
      }
   }
   public class DBusServer extends Thread implements DBus, DBus.Introspectable, DBus.Peer
   {
      public DBusServer()
      {
         setName("Server");
      }
      public Connstruct c;
      public Message m;
      public boolean isRemote() { return false; }
      public String Hello() 
      {
         if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
         synchronized (c) {
            if (null != c.unique) 
               throw new org.freedesktop.DBus.Error.AccessDenied(_("Connection has already sent a Hello message"));
            synchronized (unique_lock) {
               c.unique = ":1."+(++next_unique);
            }
         }
         synchronized (names) {
            names.put(c.unique, c);
         }

         if (Debug.debug) Debug.print(Debug.WARN, "Client "+c.unique+" registered");

         try {
            send(c, new DBusSignal("org.freedesktop.DBus", "/org/freedesktop/DBus", "org.freedesktop.DBus", "NameAcquired", "s", c.unique));
            DBusSignal s = new DBusSignal("org.freedesktop.DBus", "/org/freedesktop/DBus", "org.freedesktop.DBus", "NameOwnerChanged", "sss", c.unique, "", c.unique);
            send(null, s);
         } catch (DBusException DBe) {
            if (Debug.debug && AbstractConnection.EXCEPTION_DEBUG) Debug.print(Debug.ERR, DBe);
         }
         if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
         return c.unique;
      }
      public String[] ListNames()
      {
         if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
         String[] ns;
         synchronized (names) {
            Set<String> nss = names.keySet();
            ns = nss.toArray(new String[0]);
         }
         if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
         return ns;
      } 

      public boolean NameHasOwner(String name)
      {
         if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
         boolean rv;
         synchronized (names) {
            rv = names.containsKey(name);
         }
         if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
         return rv;
      }
      public String GetNameOwner(String name)
      {
         if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
         Connstruct owner = names.get(name);
         String o;
         if (null == owner) 
            o = "";
         else
            o = owner.unique;
         if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
         return o;
      } 

      public UInt32 GetConnectionUnixUser(String connection_name)
      {
         if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
         if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
         return new UInt32(0);
      }
      public UInt32 StartServiceByName(String name, UInt32 flags)
      {
         if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
         if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
         return new UInt32(0);
      }
      public UInt32 RequestName(String name, UInt32 flags)
      {
         if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
         
         boolean exists = false;
         synchronized (names) {
            if (!(exists = names.containsKey(name)))
               names.put(name, c);
         }
         
         int rv;
         if (exists) {
            rv = DBus.DBUS_REQUEST_NAME_REPLY_EXISTS;
         } else {
            if (Debug.debug) Debug.print(Debug.WARN, "Client "+c.unique+" acquired name "+name);
            rv = DBus.DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER;
            try {
               send(c, new DBusSignal("org.freedesktop.DBus", "/org/freedesktop/DBus", "org.freedesktop.DBus", "NameAcquired", "s", name));
               send(null, new DBusSignal("org.freedesktop.DBus", "/org/freedesktop/DBus", "org.freedesktop.DBus", "NameOwnerChanged", "sss", name, "", c.unique));
            } catch (DBusException DBe) {
               if (Debug.debug && AbstractConnection.EXCEPTION_DEBUG) Debug.print(Debug.ERR, DBe);
            }
         }

         if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
         return new UInt32(rv);
      }

      public UInt32 ReleaseName(String name)
      {
         if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
 
         boolean exists = false;
         synchronized (names) {
            if ((exists = (names.containsKey(name) && names.get(name).equals(c))))
               names.remove(name);
         }
         
         int rv;
         if (exists) {
            rv = DBus.DBUS_RELEASE_NAME_REPLY_NON_EXISTANT;
         } else {
            if (Debug.debug) Debug.print(Debug.WARN, "Client "+c.unique+" acquired name "+name);
            rv = DBus.DBUS_RELEASE_NAME_REPLY_RELEASED;
            try {
               send(c, new DBusSignal("org.freedesktop.DBus", "/org/freedesktop/DBus", "org.freedesktop.DBus", "NameLost", "s", name));
               send(null, new DBusSignal("org.freedesktop.DBus", "/org/freedesktop/DBus", "org.freedesktop.DBus", "NameOwnerChanged", "sss", name, c.unique, ""));
            } catch (DBusException DBe) {
               if (Debug.debug && AbstractConnection.EXCEPTION_DEBUG) Debug.print(Debug.ERR, DBe);
            }
         }

         if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
         return new UInt32(rv);
      }
      public void AddMatch(String matchrule) throws Error.MatchRuleInvalid
      {
         if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
         if (Debug.debug) Debug.print(Debug.VERBOSE, "Adding match rule: "+matchrule);
         synchronized (sigrecips) {
            if (!sigrecips.contains(c))
               sigrecips.add(c);
         }
         if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
         return;
      }
      public void RemoveMatch(String matchrule) throws Error.MatchRuleInvalid
      {
         if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
         if (Debug.debug) Debug.print(Debug.VERBOSE, "Removing match rule: "+matchrule);
         if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
         return;
      }
      public String[] ListQueuedOwners(String name)
      {
         if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
         if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
         return new String[0];
      }
      public UInt32 GetConnectionUnixProcessID(String connection_name)
      {
         if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
         if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
         return new UInt32(0);
      }
      public Byte[] GetConnectionSELinuxSecurityContext(String a)
      {
         if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
         if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
         return new Byte[0];
      }
      public void ReloadConfig()
      {
         if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
         if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
         return;
      }
      @SuppressWarnings("unchecked")
      private void handleMessage(Connstruct c, Message m) throws DBusException
      {
         if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
         if (Debug.debug) Debug.print(Debug.VERBOSE, "Handling message "+m+" from "+c.unique);
         if (!(m instanceof MethodCall)) return;
         Object[] args = m.getParameters();

         Class<? extends Object>[] cs = new Class[args.length];

         for (int i = 0; i < cs.length; i++)
            cs[i] = args[i].getClass();

         java.lang.reflect.Method meth = null;
         Object rv = null;

         try {
            meth = DBusServer.class.getMethod(m.getName(), cs);
            try {
               this.c = c;
               this.m = m;
               rv = meth.invoke(dbus_server, args);
               if (null == rv) {
                  send(c, new MethodReturn("org.freedesktop.DBus", (MethodCall) m, null), true);
               } else {
                  String sig = Marshalling.getDBusType(meth.getGenericReturnType())[0];
                  send(c, new MethodReturn("org.freedesktop.DBus", (MethodCall) m, sig, rv), true);
               }
            } catch (InvocationTargetException ITe) {
               if (Debug.debug && AbstractConnection.EXCEPTION_DEBUG) Debug.print(Debug.ERR, ITe);
               if (Debug.debug && AbstractConnection.EXCEPTION_DEBUG) Debug.print(Debug.ERR, ITe.getCause());
               send(c, new org.freedesktop.dbus.Error("org.freedesktop.DBus", m, ITe.getCause()));
            } catch (DBusExecutionException DBEe) {
               if (Debug.debug && AbstractConnection.EXCEPTION_DEBUG) Debug.print(Debug.ERR, DBEe);
               send(c, new org.freedesktop.dbus.Error("org.freedesktop.DBus", m, DBEe));
            } catch (Exception e) {
               if (Debug.debug && AbstractConnection.EXCEPTION_DEBUG) Debug.print(Debug.ERR, e);
               send(c,new org.freedesktop.dbus.Error("org.freedesktop.DBus", c.unique, "org.freedesktop.DBus.Error.GeneralError", m.getSerial(), "s", _("An error occurred while calling ")+m.getName()));
            }
         } catch (NoSuchMethodException NSMe) {
            send(c,new org.freedesktop.dbus.Error("org.freedesktop.DBus", c.unique, "org.freedesktop.DBus.Error.UnknownMethod", m.getSerial(), "s", _("This service does not support ")+m.getName()));
         }

         if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
      }
      public String Introspect()
      {
         return "<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n"+
         "\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"+
         "<node>\n"+
         "  <interface name=\"org.freedesktop.DBus.Introspectable\">\n"+
         "    <method name=\"Introspect\">\n"+
         "      <arg name=\"data\" direction=\"out\" type=\"s\"/>\n"+
         "    </method>\n"+
         "  </interface>\n"+
         "  <interface name=\"org.freedesktop.DBus\">\n"+
         "    <method name=\"RequestName\">\n"+
         "      <arg direction=\"in\" type=\"s\"/>\n"+
         "      <arg direction=\"in\" type=\"u\"/>\n"+
         "      <arg direction=\"out\" type=\"u\"/>\n"+
         "    </method>\n"+
         "    <method name=\"ReleaseName\">\n"+
         "      <arg direction=\"in\" type=\"s\"/>\n"+
         "      <arg direction=\"out\" type=\"u\"/>\n"+
         "    </method>\n"+
         "    <method name=\"StartServiceByName\">\n"+
         "      <arg direction=\"in\" type=\"s\"/>\n"+
         "      <arg direction=\"in\" type=\"u\"/>\n"+
         "      <arg direction=\"out\" type=\"u\"/>\n"+
         "    </method>\n"+
         "    <method name=\"Hello\">\n"+
         "      <arg direction=\"out\" type=\"s\"/>\n"+
         "    </method>\n"+
         "    <method name=\"NameHasOwner\">\n"+
         "      <arg direction=\"in\" type=\"s\"/>\n"+
         "      <arg direction=\"out\" type=\"b\"/>\n"+
         "    </method>\n"+
         "    <method name=\"ListNames\">\n"+
         "      <arg direction=\"out\" type=\"as\"/>\n"+
         "    </method>\n"+
         "    <method name=\"ListActivatableNames\">\n"+
         "      <arg direction=\"out\" type=\"as\"/>\n"+
         "    </method>\n"+
         "    <method name=\"AddMatch\">\n"+
         "      <arg direction=\"in\" type=\"s\"/>\n"+
         "    </method>\n"+
         "    <method name=\"RemoveMatch\">\n"+
         "      <arg direction=\"in\" type=\"s\"/>\n"+
         "    </method>\n"+
         "    <method name=\"GetNameOwner\">\n"+
         "      <arg direction=\"in\" type=\"s\"/>\n"+
         "      <arg direction=\"out\" type=\"s\"/>\n"+
         "    </method>\n"+
         "    <method name=\"ListQueuedOwners\">\n"+
         "      <arg direction=\"in\" type=\"s\"/>\n"+
         "      <arg direction=\"out\" type=\"as\"/>\n"+
         "    </method>\n"+
         "    <method name=\"GetConnectionUnixUser\">\n"+
         "      <arg direction=\"in\" type=\"s\"/>\n"+
         "      <arg direction=\"out\" type=\"u\"/>\n"+
         "    </method>\n"+
         "    <method name=\"GetConnectionUnixProcessID\">\n"+
         "      <arg direction=\"in\" type=\"s\"/>\n"+
         "      <arg direction=\"out\" type=\"u\"/>\n"+
         "    </method>\n"+
         "    <method name=\"GetConnectionSELinuxSecurityContext\">\n"+
         "      <arg direction=\"in\" type=\"s\"/>\n"+
         "      <arg direction=\"out\" type=\"ay\"/>\n"+
         "    </method>\n"+
         "    <method name=\"ReloadConfig\">\n"+
         "    </method>\n"+
         "    <signal name=\"NameOwnerChanged\">\n"+
         "      <arg type=\"s\"/>\n"+
         "      <arg type=\"s\"/>\n"+
         "      <arg type=\"s\"/>\n"+
         "    </signal>\n"+
         "    <signal name=\"NameLost\">\n"+
         "      <arg type=\"s\"/>\n"+
         "    </signal>\n"+
         "    <signal name=\"NameAcquired\">\n"+
         "      <arg type=\"s\"/>\n"+
         "    </signal>\n"+
         "  </interface>\n"+
         "</node>";
      }
      public void Ping() {}

      public void run()
      {
         if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
         while (_run) {
            Message m;
            Connstruct c;
            // block on outqueue
            synchronized (localqueue) { 
               while (localqueue.size() == 0) try {
                  localqueue.wait();
               } catch (InterruptedException Ie) { } 
               m = localqueue.head();
               c = localqueue.remove(m).get();
            }
            if (null != c) try {
               if (Debug.debug) Debug.print(Debug.VERBOSE, "<localqueue> Got message "+m+" from "+c);
               handleMessage(c, m);
            } catch (DBusException DBe) {
               if (Debug.debug && AbstractConnection.EXCEPTION_DEBUG) Debug.print(Debug.ERR, DBe);
            }
            else if (Debug.debug) Debug.print(Debug.INFO, "Discarding "+m+" connection reaped");
         }
         if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
      }
   }
   public class Sender extends Thread
   {
      public Sender()
      {
         setName("Sender");
      }
      public void run()
      {
         if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
         while (_run) {

            if (Debug.debug) Debug.print(Debug.VERBOSE, "Acquiring lock on outqueue and blocking for data");
            Message m = null;
            Connstruct c = null;
            // block on outqueue
            synchronized (outqueue) { 
               while (outqueue.size() == 0) try {
                  outqueue.wait();
               } catch (InterruptedException Ie) { } 

               m = outqueue.head();
               WeakReference<Connstruct> wc = outqueue.remove(m);
               if (null != wc) c = wc.get();
            }
            if (null != c) {
               if (Debug.debug) Debug.print(Debug.VERBOSE, "<outqueue> Got message "+m+" for "+c.unique);
               if (Debug.debug) Debug.print(Debug.INFO, "Sending message "+m+" to "+c.unique);
               try {
                  c.mout.writeMessage(m);
               }
               catch (IOException IOe) {
                  if (Debug.debug && AbstractConnection.EXCEPTION_DEBUG) Debug.print(Debug.ERR, IOe);
                  removeConnection(c);
               }
            }
            else if (Debug.debug) Debug.print(Debug.INFO, "Discarding "+m+" connection reaped");
         }
         if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
      }
   }
   public class Reader extends Thread
   {
      private Connstruct conn;
      private WeakReference<Connstruct> weakconn;
      private boolean _lrun = true;
      public Reader(Connstruct conn)
      {
         this.conn = conn;
         weakconn = new WeakReference<Connstruct>(conn);
         setName("Reader");
      }
      public void stopRunning()
      {
         _lrun = false;
      }
      public void run()
      {
         if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
         while (_run && _lrun) {

            Message m = null;
            try {
               m = conn.min.readMessage();
            } catch (IOException IOe) {
               if (Debug.debug && AbstractConnection.EXCEPTION_DEBUG) Debug.print(Debug.ERR, IOe);
               removeConnection(conn);
            } catch (DBusException DBe) {
               if (Debug.debug && AbstractConnection.EXCEPTION_DEBUG) Debug.print(Debug.ERR, DBe);
               if (DBe instanceof FatalException)
                  removeConnection(conn);
            }

            if (null != m) {
               if (Debug.debug) Debug.print(Debug.INFO, "Read "+m+" from "+conn.unique);
               synchronized (inqueue) {
                  inqueue.putLast(m, weakconn);
                  inqueue.notifyAll();
               }
            }
         }
         conn = null;
         if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
      }
   }

   private Map<Connstruct, Reader> conns = new HashMap<Connstruct, Reader>();
   private HashMap<String, Connstruct> names = new HashMap<String, Connstruct>();
   private MagicMap<Message, WeakReference<Connstruct>> outqueue = new MagicMap<Message, WeakReference<Connstruct>>("out");
   private MagicMap<Message, WeakReference<Connstruct>> inqueue = new MagicMap<Message, WeakReference<Connstruct>>("in");
   private MagicMap<Message, WeakReference<Connstruct>> localqueue = new MagicMap<Message, WeakReference<Connstruct>>("local");
   private List<Connstruct> sigrecips = new Vector<Connstruct>();
   private boolean _run = true;
   private int next_unique = 0;
   private Object unique_lock = new Object();
   DBusServer dbus_server = new DBusServer();
   Sender sender = new Sender();
   
   public DBusDaemon()
   {
      setName("Daemon");
      synchronized (names) {
         names.put("org.freedesktop.DBus", null);
      }
   }
   @SuppressWarnings("unchecked")
   private void send(Connstruct c, Message m)
   {
      send (c, m, false);
   }
   private void send(Connstruct c, Message m, boolean head)
   {
      if (Debug.debug){
         Debug.print(Debug.DEBUG, "enter");
         if (null == c)
            Debug.print(Debug.VERBOSE, "Queing message "+m+" for all connections");
         else
            Debug.print(Debug.VERBOSE, "Queing message "+m+" for "+c.unique);
      }
      // send to all connections
      if (null == c) {
         synchronized (conns) {
            synchronized (outqueue) {
               for (Connstruct d: conns.keySet()) 
                  if (head)
                     outqueue.putFirst(m, new WeakReference<Connstruct>(d));
                  else
                     outqueue.putLast(m, new WeakReference<Connstruct>(d));
               outqueue.notifyAll();
            }
         }
      } else {
         synchronized (outqueue) {
            if (head)
               outqueue.putFirst(m, new WeakReference<Connstruct>(c));
            else
               outqueue.putLast(m, new WeakReference<Connstruct>(c));
            outqueue.notifyAll();
         }
      }
      if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
   }
   @SuppressWarnings("unchecked")
   private List<Connstruct> findSignalMatches(DBusSignal sig)
   {
      if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
      List<Connstruct> l;
      synchronized (sigrecips) {
         l = new Vector<Connstruct>(sigrecips);
      }
      if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
      return l;
   }
   @SuppressWarnings("unchecked")
   public void run()
   {
      if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
      while (_run) {
            try {
               Message m;
               Connstruct c;
               WeakReference<Connstruct> wc;
               synchronized (inqueue) {
                  while (0 == inqueue.size()) try {
                     inqueue.wait();
                  } catch (InterruptedException Ie) {}
                  
                  m = inqueue.head();
                  wc = inqueue.remove(m);
                  c = wc.get();
               }
               if (null != c) {
                  if (Debug.debug) Debug.print(Debug.INFO, "<inqueue> Got message "+m+" from "+c.unique);
                  // check if they have hello'd
                  if (null == c.unique 
                        && (!(m instanceof MethodCall) 
                           || !"org.freedesktop.DBus".equals(m.getDestination())
                           || !"Hello".equals(m.getName()))) {
                     send(c,new Error("org.freedesktop.DBus", null, "org.freedesktop.DBus.Error.AccessDenied", m.getSerial(), "s", _("You must send a Hello message")));
                  } else {
                     try {
                        if (null != c.unique) m.setSource(c.unique);
                     } catch (DBusException DBe) {
                        if (Debug.debug && AbstractConnection.EXCEPTION_DEBUG) Debug.print(Debug.ERR, DBe);
                        send(c,new Error("org.freedesktop.DBus", null, "org.freedesktop.DBus.Error.GeneralError", m.getSerial(), "s", _("Sending message failed")));
                     }

                     if ("org.freedesktop.DBus".equals(m.getDestination())) {
                        synchronized (localqueue) {
                           localqueue.putLast(m, wc);
                           localqueue.notifyAll();
                        }
                     } else {
                        if (m instanceof DBusSignal) {
                           List<Connstruct> list = findSignalMatches((DBusSignal) m);
                           for (Connstruct d: list)
                              send(d, m);
                        } else {
                           Connstruct dest = names.get(m.getDestination());

                           if (null == dest) {
                              send(c, new Error("org.freedesktop.DBus", null, "org.freedesktop.DBus.Error.ServiceUnknown", m.getSerial(), "s", MessageFormat.format(_("The name `{0}' does not exist"), new Object[] { m.getDestination() })));
                           } else
                              send(dest, m);
                        }
                     }
                  }
               }
            }
            catch (DBusException DBe) {
               if (Debug.debug && AbstractConnection.EXCEPTION_DEBUG) Debug.print(Debug.ERR, DBe);
            }
      }
      if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
   }
   private void removeConnection(Connstruct c)
   {
      if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
      boolean exists;
      synchronized(conns) {
         if ((exists = conns.containsKey(c))) {
            Reader r = conns.get(c);
            r.stopRunning();
            conns.remove(c);
         }
      }
      if (exists) {
         try {
            if (null != c.usock) c.usock.close();
            if (null != c.tsock) c.tsock.close();
         } catch (IOException IOe) {}
         synchronized(names) {
            List<String> toRemove = new Vector<String>();
            for (String name: names.keySet()) 
               if (names.get(name) == c) {
                  toRemove.add(name);
                  try {
                     send(null, new DBusSignal("org.freedesktop.DBus", "/org/freedesktop/DBus", "org.freedesktop.DBus", "NameOwnerChanged", "sss", name, c.unique, ""));
                  } catch (DBusException DBe) {
                     if (Debug.debug && AbstractConnection.EXCEPTION_DEBUG) Debug.print(Debug.ERR, DBe);
                  }
               }
            for (String name: toRemove)
               names.remove(name);
         }
      }
      if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
   }
   public void addSock(UnixSocket us)
   {
      if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
      if (Debug.debug) Debug.print(Debug.WARN, "New Client");
      Connstruct c = new Connstruct(us);
      Reader r = new Reader(c);
      synchronized (conns) {
         conns.put(c, r);
      }
      r.start();
      if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
   }
   public void addSock(Socket s) throws IOException
   {
      if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
      if (Debug.debug) Debug.print(Debug.WARN, "New Client");
      Connstruct c = new Connstruct(s);
      Reader r = new Reader(c);
      synchronized (conns) {
         conns.put(c, r);
      }
      r.start();
      if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
   }
   public static void syntax()
   {
      System.out.println("Syntax: DBusDaemon [--version] [-v] [--help] [-h] [--listen address] [-l address] [--print-address] [-r] [--pidfile file] [-p file] [--addressfile file] [-a file] [--unix] [-u] [--tcp] [-t] ");
      System.exit(1);
   }
   public static void version()
   {
      System.out.println("D-Bus Java Version: "+System.getProperty("Version"));
      System.exit(1);
   }
   public static void saveFile(String data, String file) throws IOException
   {
      PrintWriter w = new PrintWriter(new FileOutputStream(file));
      w.println(data);
      w.close();
   }
   public static void main(String args[]) throws Exception
   {
      if (Debug.debug && AbstractConnection.EXCEPTION_DEBUG) Debug.print(Debug.DEBUG, "enter");
      else if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
      String addr = null;
      String pidfile = null;
      String addrfile = null;
      boolean printaddress = false;
      boolean unix = true;
      boolean tcp = false;

      // parse options
      try {
         for (int i=0; i < args.length; i++) 
            if ("--help".equals(args[i]) || "-h".equals(args[i])) 
               syntax();
            else if ("--version".equals(args[i]) || "-v".equals(args[i])) 
               version();
            else if ("--listen".equals(args[i]) || "-l".equals(args[i]))
               addr = args[++i];
            else if ("--pidfile".equals(args[i]) || "-p".equals(args[i]))
               pidfile = args[++i];
            else if ("--addressfile".equals(args[i]) || "-a".equals(args[i]))
               addrfile = args[++i];
            else if ("--print-address".equals(args[i]) || "-r".equals(args[i]))
               printaddress = true;
            else if ("--unix".equals(args[i]) || "-u".equals(args[i])) {
               unix = true;
               tcp = false;
            } else if ("--tcp".equals(args[i]) || "-t".equals(args[i])) {
               tcp = true;
               unix = false;
            } else syntax();
      } catch (ArrayIndexOutOfBoundsException AIOOBe) {
         syntax();
      }

      // generate a random address if none specified
      if (null == addr && unix) addr = DirectConnection.createDynamicSession();
      else if (null == addr && tcp) addr = DirectConnection.createDynamicTCPSession();

      BusAddress address = new BusAddress(addr);
      if (null == address.getParameter("guid")) {
         addr += ",guid="+Transport.genGUID();
         address = new BusAddress(addr);
      }

      // print address to stdout
      if (printaddress) System.out.println(addr);

      // print address to file
      if (null != addrfile) saveFile(addr, addrfile);

      // print PID to file
      if (null != pidfile) saveFile(System.getProperty("Pid"), pidfile);

      // start the daemon
      if (Debug.debug) Debug.print(Debug.WARN, "Binding to "+addr);
      if ("unix".equals(address.getType()))
         doUnix(address);
      else if ("tcp".equals(address.getType()))
         doTCP(address);
      else throw new Exception("Unknown address type: "+address.getType());
      if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
   }
   private static void doUnix(BusAddress address) throws IOException
   {
      if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
      UnixServerSocket uss;
      if (null != address. getParameter("abstract"))
         uss = new UnixServerSocket(new UnixSocketAddress(address.getParameter("abstract"), true)); 
      else
         uss = new UnixServerSocket(new UnixSocketAddress(address.getParameter("path"), false)); 
      DBusDaemon d = new DBusDaemon();
      d.start();
      d.sender.start();
      d.dbus_server.start();

      // accept new connections
      while (d._run) {
         UnixSocket s = uss.accept();
         if ((new Transport.SASL()).auth(Transport.SASL.MODE_SERVER, Transport.SASL.AUTH_EXTERNAL, address.getParameter("guid"), s.getOutputStream(), s.getInputStream(), s)) {
         //   s.setBlocking(false);
            d.addSock(s);
         } else
            s.close();
      }
      if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
   }
   private static void doTCP(BusAddress address) throws IOException
   {
      if (Debug.debug) Debug.print(Debug.DEBUG, "enter");
      ServerSocket ss = new ServerSocket(Integer.parseInt(address.getParameter("port")),10, InetAddress.getByName(address.getParameter("host"))); 
      DBusDaemon d = new DBusDaemon();
      d.start();
      d.sender.start();
      d.dbus_server.start();

      // accept new connections
      while (d._run) {
         Socket s = ss.accept();
         boolean authOK=false;
         try {
             authOK = (new Transport.SASL()).auth(Transport.SASL.MODE_SERVER, Transport.SASL.AUTH_EXTERNAL, address.getParameter("guid"), s.getOutputStream(), s.getInputStream(), null);
         } catch (Exception e) {
             if (Debug.debug) Debug. print(Debug.DEBUG, e);
         }
         if (authOK) {
            d.addSock(s);
         } else
            s.close();
      }
      if (Debug.debug) Debug.print(Debug.DEBUG, "exit");
   }
}

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