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Commit 5144b608 authored by Daniel Henninger's avatar Daniel Henninger Committed by dhenninger
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Various work. Presence was not working right at all before. Working better... 

Various work.  Presence was not working right at all before.  Working better now but not completely.

git-svn-id: http://svn.igniterealtime.org/svn/repos/wildfire/trunk/src/plugins/gateway@4501 b35dd754-fafc-0310-a699-88a17e54d16e
parent 87be85bc
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Showing with 284 additions and 163 deletions
src/java/org/jivesoftware/wildfire/gateway/BaseGateway.java
View file @ 5144b608
......@@ -21,9 +21,13 @@ import org.dom4j.QName;
import org.jivesoftware.wildfire.gateway.roster.ForeignContact;
import org.jivesoftware.wildfire.gateway.roster.NormalizedJID;
import org.jivesoftware.wildfire.gateway.roster.PersistenceManager;
import org.jivesoftware.wildfire.gateway.roster.Roster;
import org.jivesoftware.wildfire.gateway.roster.Status;
import org.jivesoftware.wildfire.gateway.util.BackgroundThreadFactory;
import org.jivesoftware.wildfire.roster.RosterManager;
import org.jivesoftware.wildfire.roster.RosterItem;
import org.jivesoftware.wildfire.roster.Roster;
import org.jivesoftware.wildfire.user.UserNotFoundException;
import org.jivesoftware.wildfire.user.UserAlreadyExistsException;
import org.jivesoftware.util.Log;
import org.jivesoftware.util.LocaleUtils;
import org.xmpp.component.Component;
......@@ -101,7 +105,12 @@ public abstract class BaseGateway implements Gateway, Component, Runnable {
/**
* Handles registration for this gateway.
*/
public final PersistenceManager rosterManager = PersistenceManager.Factory.get(this);
public final PersistenceManager persistenceManager = PersistenceManager.Factory.get(this);
/**
* Handles server side roster for this gateway.
*/
public final RosterManager rosterManager = new RosterManager();
/** The threadPool. @see java.util.concurrent.ScheduledExecutorService */
protected static final ScheduledExecutorService threadPool = Executors.newSingleThreadScheduledExecutor(new BackgroundThreadFactory());
......@@ -141,9 +150,6 @@ public abstract class BaseGateway implements Gateway, Component, Runnable {
if ("http://jabber.org/protocol/disco#info".equals(namespace)) {
response.add(handleServiceDiscovery(iq));
}
else if ("jabber:iq:agents".equals(namespace)) {
response.add(handleLegacyServiceDiscovery(iq));
}
else if ("http://jabber.org/protocol/disco#items".equals(namespace)) {
response.add(handleDiscoveryItems(iq));
}
......@@ -153,40 +159,9 @@ public abstract class BaseGateway implements Gateway, Component, Runnable {
else if ("jabber:iq:version".equals(namespace)) {
response.add(handleVersion(iq));
}
else if ("jabber:iq:browse".equals(namespace)) {
response.add(handleBrowse(iq));
}
return response;
}
/**
* Process a browse request.
*
* @param iq The client IQ packet.
* @return iq The response IQ packet.
*/
private IQ handleBrowse(IQ iq) {
IQ reply = IQ.createResultIQ(iq);
Element responseElement = DocumentHelper.createElement(QName.get(
"query", "jabber:iq:browse"));
try {
for (ForeignContact fc : PersistenceManager.Factory.get(this).getRegistrar().getGatewaySession(iq.getFrom()).getContacts()) {
Element item = DocumentHelper.createElement("item");
item.addAttribute("category", "user");
item.addAttribute("jid", fc + "@" + this.getName() + "." + this.getDomain());
item.addAttribute("type", "client");
responseElement.add(item);
}
reply.setChildElement(responseElement);
}
catch (Exception e) {
Log.warn(LocaleUtils.getLocalizedString("basegateway.notfound", "gateway", Arrays.asList(iq.getFrom().toBareJID())));
}
return reply;
}
/**
* Process a version request.
*
......@@ -317,27 +292,66 @@ public abstract class BaseGateway implements Gateway, Component, Runnable {
// make sure that something was collected, otherwise return an error
if (username == null || password == null) {
IQ result = IQ.createResultIQ(iq);
result.setError(Condition.bad_request);
response.add(result);
IQ result = IQ.createResultIQ(iq);
result.setError(Condition.bad_request);
response.add(result);
}
else {
Log.info(LocaleUtils.getLocalizedString("basegateway.register", "gateway", Arrays.asList(username.trim())));
SubscriptionInfo info = new SubscriptionInfo(username.trim(), password);
SubscriptionInfo info = new SubscriptionInfo(username.trim(), password, iq.getFrom());
PersistenceManager.Factory.get(this).getRegistrar().add(iq.getFrom(), info);
reply.setChildElement(responseElement);
response.add( reply );
Presence subscribe = new Presence(Presence.Type.subscribe);
subscribe.setTo(iq.getFrom());
subscribe.setFrom(iq.getTo());
response.add(subscribe);
//Presence subscribe = new Presence(Presence.Type.subscribe);
//subscribe.setTo(iq.getFrom());
//subscribe.setFrom(iq.getTo());
//response.add(subscribe);
try {
Roster roster = rosterManager.getRoster(iq.getFrom().getNode());
try {
RosterItem gwitem = roster.getRosterItem(iq.getTo());
if (gwitem.getSubStatus() != RosterItem.SUB_BOTH) {
gwitem.setSubStatus(RosterItem.SUB_BOTH);
}
if (gwitem.getAskStatus() != RosterItem.ASK_NONE) {
gwitem.setAskStatus(RosterItem.ASK_NONE);
}
roster.updateRosterItem(gwitem);
}
catch (UserNotFoundException e) {
try {
RosterItem gwitem = roster.createRosterItem(iq.getTo(), true);
gwitem.setSubStatus(RosterItem.SUB_BOTH);
gwitem.setAskStatus(RosterItem.ASK_NONE);
roster.updateRosterItem(gwitem);
}
catch (UserAlreadyExistsException ee) {
Log.error("getRosterItem claims user exists, but couldn't find via getRosterItem?");
IQ result = IQ.createResultIQ(iq);
result.setError(Condition.bad_request);
response.add(result);
}
catch (Exception ee) {
Log.error("createRosterItem caused exception: " + ee.getMessage());
IQ result = IQ.createResultIQ(iq);
result.setError(Condition.bad_request);
response.add(result);
}
}
}
catch (UserNotFoundException e) {
Log.error("Someone attempted to register with the gateway who is not registered with the server: " + iq.getFrom());
IQ result = IQ.createResultIQ(iq);
result.setError(Condition.bad_request);
response.add(result);
}
}
}
else if (iq.getType().equals(IQ.Type.get)) {
DataForm form = new DataForm(DataForm.Type.form);
// This needs to ask the specific gateway what to say.
form.addInstruction("Please enter your AIM Screenname and Password");
form.addInstruction("Please enter your legacy account username and password");
FormField usernameField = form.addField();
usernameField.setLabel("Username");
usernameField.setVariable("username");
......@@ -351,7 +365,7 @@ public abstract class BaseGateway implements Gateway, Component, Runnable {
* Add standard elements to request.
*/
// This needs to ask the specific gateway what to say.
responseElement.addElement("instruction").addText("Please enter your AIM screenname and password");
responseElement.addElement("instruction").addText("Please enter your legacy account username and password");
responseElement.addElement("username");
responseElement.addElement("password");
......@@ -378,29 +392,18 @@ public abstract class BaseGateway implements Gateway, Component, Runnable {
Element responseElement = DocumentHelper.createElement(QName.get(
"query", "http://jabber.org/protocol/disco#info"));
Roster roster = this.rosterManager.getContactManager().getRoster(iq.getFrom());
for (ForeignContact entry : roster.getAll()) {
Element item = responseElement.addElement("item");
item.addAttribute("jid", entry.getJid().toBareJID());
item.addAttribute("name", entry.getName());
responseElement.add(item);
}
//Roster roster = this.persistenceManager.getContactManager().getRoster(iq.getFrom());
//for (ForeignContact entry : roster.getAll()) {
// Element item = responseElement.addElement("item");
// item.addAttribute("jid", entry.getJid().toBareJID());
// item.addAttribute("name", entry.getName());
// responseElement.add(item);
//}
reply.setChildElement(responseElement);
Log.debug(reply.toString());
return reply;
}
/**
* TODO: handle a legacy service discovery request.
*
* @param iq
* @return response
*/
private IQ handleLegacyServiceDiscovery(IQ iq) {
return IQ.createResultIQ(iq);
// TODO: Implement Legacy Service Discovery.
}
/**
* Handle service discovery.
*
......@@ -494,7 +497,7 @@ public abstract class BaseGateway implements Gateway, Component, Runnable {
/*
* Unknown entity is trying to access the gateway.
*/
if (!rosterManager.getRegistrar().isRegistered(NormalizedJID.wrap(from))) {
if (!persistenceManager.getRegistrar().isRegistered(NormalizedJID.wrap(from))) {
Log.info(LocaleUtils.getLocalizedString("basegateway.unabletofind", "gateway", Arrays.asList(from)));
// silently ignore a delete request
if (!Presence.Type.unavailable.equals(presence.getType())) {
......@@ -510,76 +513,141 @@ public abstract class BaseGateway implements Gateway, Component, Runnable {
/*
* Get the underlying session for this JID and handle accordingly.
*/
GatewaySession sessionInfo = rosterManager.getRegistrar().getGatewaySession(from);
GatewaySession sessionInfo = persistenceManager.getRegistrar().getGatewaySession(from);
if (sessionInfo == null) {
Log.warn(LocaleUtils.getLocalizedString("basegateway.unabletolocatesession" , "gateway", Arrays.asList(from)));
return p;
}
if (presence.getTo().getNode() == null) { // this is a request to the gateway itself.
if (presence.getType() == null && persistenceManager.getRegistrar().isRegistered(NormalizedJID.wrap(from))) {
GatewaySession session = persistenceManager.getRegistrar().getGatewaySession(presence.getFrom());
if (Presence.Type.subscribe.equals(presence.getType())) {
if (presence.getTo().equals(this.jid)) {
sessionInfo.getSubscriptionInfo().serverRegistered = true;
}
else {
Presence subscribe = new Presence(Presence.Type.subscribe);
subscribe.setTo(presence.getFrom());
subscribe.setFrom(presence.getTo());
p.add(subscribe);
}
Presence reply = new Presence(Presence.Type.subscribed);
reply.setTo(presence.getFrom());
reply.setFrom(presence.getTo());
p.add(reply);
}
else if (Presence.Type.subscribed.equals(presence.getType())) {
if (presence.getTo().equals(this.jid)) { // subscribed to server
sessionInfo.getSubscriptionInfo().clientRegistered = true;
}
else { // subscribe to legacy user
Log.debug(LocaleUtils.getLocalizedString("basegateway.subscribed", "gateway"));
Presence result = new Presence();
result.setTo(presence.getFrom());
result.setFrom(this.jid);
p.add(result);
Log.debug(LocaleUtils.getLocalizedString("basegateway.gatewaypresence", "gateway"));
}
}
else if (Presence.Type.unavailable.equals(presence.getType())){
/**
* If an unavailable presence stanza is received then logout the
* current user and send back and unavailable stanza.
*/
if (sessionInfo.isConnected()) {
sessionInfo.logout();
else if (Presence.Type.unavailable.equals(presence.getType())) {
/**
* If an unavailable presence stanza is received then logout the
* current user and send back and unavailable stanza.
*/
if (sessionInfo.isConnected()) {
sessionInfo.logout();
}
Presence reply = new Presence(Presence.Type.unavailable);
reply.setTo(presence.getFrom());
reply.setFrom(presence.getTo());
p.add(reply);
}
Presence reply = new Presence(Presence.Type.unavailable);
reply.setTo(presence.getFrom());
reply.setFrom(presence.getTo());
p.add(reply);
}
else if (presence.getTo().getNode() == null) { // this is a request to the gateway only.
Presence result = new Presence();
result.setTo(presence.getFrom());
result.setFrom(this.jid);
p.add(result);
Log.debug(LocaleUtils.getLocalizedString("basegateway.gatewaypresence", "gateway"));
}
else {
GatewaySession session = rosterManager.getRegistrar().getGatewaySession(presence.getFrom());
if (Presence.Type.subscribe.equals(presence.getType())) {
GatewaySession session = persistenceManager.getRegistrar().getGatewaySession(presence.getFrom());
try {
session.addContact(presence.getTo());
}
catch (Exception e) {
Log.error("Failed to add: " + presence.getTo());
}
try {
ForeignContact fc = session.getContact(presence.getTo());
Status status = fc.getStatus();
Presence p2 = new Presence();
p2.setFrom(presence.getTo());
p2.setTo(presence.getFrom());
if (status.isOnline()) {
p2.setStatus(status.getValue());
try {
Roster roster = rosterManager.getRoster(presence.getFrom().getNode());
try {
RosterItem gwitem = roster.getRosterItem(presence.getTo());
if (gwitem.getSubStatus() != RosterItem.SUB_BOTH) {
gwitem.setSubStatus(RosterItem.SUB_BOTH);
}
if (gwitem.getAskStatus() != RosterItem.ASK_NONE) {
gwitem.setAskStatus(RosterItem.ASK_NONE);
}
roster.updateRosterItem(gwitem);
}
catch (UserNotFoundException e) {
try {
RosterItem gwitem = roster.createRosterItem(presence.getTo(), true);
gwitem.setSubStatus(RosterItem.SUB_BOTH);
gwitem.setAskStatus(RosterItem.ASK_NONE);
roster.updateRosterItem(gwitem);
}
catch (UserAlreadyExistsException ee) {
Log.error("getRosterItem claims user exists, but couldn't find via getRosterItem?");
}
catch (Exception ee) {
Log.error("createRosterItem caused exception: " + ee.getMessage());
}
}
}
else {
p2.setType(Presence.Type.unavailable);
catch (UserNotFoundException e) {
Log.error("Someone attempted to register with the gateway who is not registered with the server: " + presence.getFrom());
}
p.add(p2);
//Presence subscribe = new Presence(Presence.Type.subscribe);
//subscribe.setTo(presence.getFrom());
//subscribe.setFrom(presence.getTo());
//p.add(subscribe);
Presence reply = new Presence(Presence.Type.subscribed);
reply.setTo(presence.getFrom());
reply.setFrom(presence.getTo());
p.add(reply);
}
catch (Exception e) {
Log.warn(LocaleUtils.getLocalizedString("basegateway.statusexception", "gateway", Arrays.asList(new Object[]{presence.getTo(), presence.getFrom(), e.getLocalizedMessage()})));
else if (Presence.Type.unsubscribe.equals(presence.getType())) {
GatewaySession session = persistenceManager.getRegistrar().getGatewaySession(presence.getFrom());
try {
session.removeContact(presence.getTo());
}
catch (Exception e) {
Log.error("Failed to remove: " + presence.getTo());
}
try {
Roster roster = rosterManager.getRoster(presence.getFrom().getNode());
try {
roster.deleteRosterItem(presence.getTo(), false);
}
catch (Exception e) {
Log.error("deleteRosterItem caused exception: " + e.getMessage());
}
}
catch (UserNotFoundException e) {
Log.error("Someone attempted to register with the gateway who is not registered with the server: " + presence.getFrom());
}
//Presence unsubscribe = new Presence(Presence.Type.subscribe);
//unsubscribe.setTo(presence.getFrom());
//unsubscribe.setFrom(presence.getTo());
//p.add(subscribe);
Presence reply = new Presence(Presence.Type.unsubscribed);
reply.setTo(presence.getFrom());
reply.setFrom(presence.getTo());
p.add(reply);
}
else if (Presence.Type.subscribed.equals(presence.getType())) {
Log.debug(LocaleUtils.getLocalizedString("basegateway.subscribed", "gateway"));
}
else {
GatewaySession session = persistenceManager.getRegistrar().getGatewaySession(presence.getFrom());
try {
ForeignContact fc = session.getContact(presence.getTo());
Status status = fc.getStatus();
Presence p2 = new Presence();
p2.setFrom(presence.getTo());
p2.setTo(presence.getFrom());
if (status.isOnline()) {
p2.setStatus(status.getValue());
}
else {
p2.setType(Presence.Type.unavailable);
}
p.add(p2);
}
catch (Exception e) {
Log.warn(LocaleUtils.getLocalizedString("basegateway.statusexception", "gateway", Arrays.asList(new Object[]{presence.getTo(), presence.getFrom(), e.getLocalizedMessage()})));
}
}
}
return p;
......@@ -654,22 +722,69 @@ public abstract class BaseGateway implements Gateway, Component, Runnable {
public void run() {
//Log.debug(LocaleUtils.getLocalizedString("basegateway.maintenancestart", "gateway"));
for (SubscriptionInfo si : rosterManager.getRegistrar().getAllGatewaySessions()) {
if (!si.clientRegistered) {
Presence p = new Presence();
p.setType(Presence.Type.subscribe);
p.setTo(si.jid);
p.setFrom(this.jid);
try {
componentManager.sendPacket(this, p);
for (SubscriptionInfo si : persistenceManager.getRegistrar().getAllGatewaySessions()) {
try {
GatewaySession session = persistenceManager.getRegistrar().getGatewaySession(si.jid);
if (!session.isConnected()) {
continue;
}
catch (ComponentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
for (ForeignContact fc : session.getContacts()) {
try {
Roster roster = rosterManager.getRoster(si.jid.getNode());
try {
RosterItem gwitem = roster.getRosterItem(fc.getJid());
if (gwitem.getSubStatus() != RosterItem.SUB_BOTH) {
gwitem.setSubStatus(RosterItem.SUB_BOTH);
}
if (gwitem.getAskStatus() != RosterItem.ASK_NONE) {
gwitem.setAskStatus(RosterItem.ASK_NONE);
}
roster.updateRosterItem(gwitem);
}
catch (UserNotFoundException e) {
try {
RosterItem gwitem = roster.createRosterItem(fc.getJid(), true);
gwitem.setSubStatus(RosterItem.SUB_BOTH);
gwitem.setAskStatus(RosterItem.ASK_NONE);
roster.updateRosterItem(gwitem);
}
catch (UserAlreadyExistsException ee) {
Log.error("getRosterItem claims user exists, but couldn't find via getRosterItem?");
}
catch (Exception ee) {
Log.error("createRosterItem caused exception: " + ee.getMessage());
}
}
}
catch (UserNotFoundException e) {
Log.error("Someone attempted to register with the gateway who is not registered with the server: " + si.jid);
}
}
}
catch (Exception e) {
// ignore
}
}
//for (SubscriptionInfo si : persistenceManager.getRegistrar().getAllGatewaySessions()) {
// if (!si.clientRegistered) {
// Presence p = new Presence();
// p.setType(Presence.Type.subscribe);
// p.setTo(si.jid);
// p.setFrom(this.jid);
// Log.debug("Run Packet: " + p.toString());
// Log.debug("Run si.user: " + si.username);
// Log.debug("Run si.pass: " + si.password);
// try {
// componentManager.sendPacket(this, p);
// }
// catch (ComponentException e) {
// TODO Auto-generated catch block
// Log.error(e.getMessage());
// }
// }
// for(ForeignContact fc : rosterManager.getContactManager().getRoster(si.jid).getAll()) {
// for(ForeignContact fc : persistenceManager.getContactManager().getRoster(si.jid).getAll()) {
// Presence p = new Presence();
// p.setFrom(fc.getJid());
// p.setTo(si.jid);
......@@ -680,9 +795,9 @@ public abstract class BaseGateway implements Gateway, Component, Runnable {
// Log.warn(LocaleUtils.getLocalizedString("basegateway.unabletosendpresence", "gateway"), e);
// }
// }
}
//}
// for(ForeignContact contact : rosterManager.getContactManager().getAllForeignContacts()) {
// for(ForeignContact contact : persistenceManager.getContactManager().getAllForeignContacts()) {
// if(!contact.isConnected())
// continue;
// Presence p = new Presence();
......
src/java/org/jivesoftware/wildfire/gateway/SubscriptionInfo.java
View file @ 5144b608
......@@ -31,9 +31,10 @@ public class SubscriptionInfo implements Serializable {
* @param username The username
* @param password The password
*/
public SubscriptionInfo(String username, String password) {
public SubscriptionInfo(String username, String password, JID jid) {
this.username = username;
this.password = password;
this.jid = jid;
}
/**
......@@ -61,6 +62,7 @@ public class SubscriptionInfo implements Serializable {
*
* @see org.xmpp.packet.JID
*/
public transient JID jid;
//public transient JID jid;
public JID jid;
}
src/java/org/jivesoftware/wildfire/gateway/protocols/yahoo/YahooGatewaySession.java
View file @ 5144b608
......@@ -304,6 +304,7 @@ public class YahooGatewaySession extends AbstractGatewaySession implements Endpo
String node = to.getNode();
if (node == null || node.length() == 0) throw new UnknownForeignContactException("invalidnode", node.toString());
YahooUser user = session.getUser(node);
Log.debug("getUser on node " + node);
if (user == null) throw new UnknownForeignContactException("invaliduser");
return new YahooForeignContact(session.getUser(to.getNode()), this.gateway);
}
......
src/java/org/jivesoftware/wildfire/gateway/roster/PersistenceManager.java
View file @ 5144b608
......@@ -16,6 +16,7 @@ import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.lang.Byte;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.Executors;
......@@ -147,20 +148,21 @@ public class PersistenceManager implements Serializable {
* The key is stored in the registry so the key is as secure as the
* registry is secure.
*/
byte[] rawKey = Preferences.systemNodeForPackage(this.getClass()).getByteArray(".key", null);
//byte[] rawKey = Preferences.systemNodeForPackage(this.getClass()).getByteArray(".key", null);
if (rawKey == null) {
Log.error(LocaleUtils.getLocalizedString("persistencemanager.nokey", "gateway"));
return;
}
//if (rawKey == null) {
// Log.error(LocaleUtils.getLocalizedString("persistencemanager.nokey", "gateway"));
// return;
//}
SecretKeySpec key = new SecretKeySpec(rawKey, "AES");
Cipher c = Cipher.getInstance("AES");
c.init(Cipher.DECRYPT_MODE, key);
//SecretKeySpec key = new SecretKeySpec(rawKey, "AES");
//Cipher c = Cipher.getInstance("AES");
//c.init(Cipher.DECRYPT_MODE, key);
CipherInputStream cis = new CipherInputStream(new FileInputStream(db), c);
//CipherInputStream cis = new CipherInputStream(new FileInputStream(db), c);
ObjectInputStream is = new ObjectInputStream(cis);
//ObjectInputStream is = new ObjectInputStream(cis);
ObjectInputStream is = new ObjectInputStream(new FileInputStream(db));
contactManager = (ContactManager)is.readObject() ;
registrar = (Registrar) is.readObject() ;
is.close();
......@@ -206,22 +208,23 @@ public class PersistenceManager implements Serializable {
* @throws Exception
*/
public synchronized void store() throws Exception {
Preferences prefs = Preferences.systemNodeForPackage(this.getClass());
byte[] rawKey = prefs.getByteArray(".key", null);
if (rawKey == null) {
Log.error(LocaleUtils.getLocalizedString("persistencemanager.gennewkey", "gateway"));
KeyGenerator kg = KeyGenerator.getInstance("AES");
SecretKey key = kg.generateKey();
rawKey = key.getEncoded();
prefs.putByteArray(".key", rawKey);
}
//Preferences prefs = Preferences.systemNodeForPackage(this.getClass());
//byte[] rawKey = prefs.getByteArray(".key", null);
//if (rawKey == null) {
// Log.error(LocaleUtils.getLocalizedString("persistencemanager.gennewkey", "gateway"));
// KeyGenerator kg = KeyGenerator.getInstance("AES");
// SecretKey key = kg.generateKey();
// rawKey = key.getEncoded();
// prefs.putByteArray(".key", rawKey);
//}
SecretKeySpec key = new SecretKeySpec(rawKey, "AES");
Cipher c = Cipher.getInstance("AES");
c.init(Cipher.ENCRYPT_MODE, key);
CipherOutputStream os = new CipherOutputStream(new FileOutputStream(db), c);
ObjectOutputStream oos = new ObjectOutputStream(os);
//SecretKeySpec key = new SecretKeySpec(rawKey, "AES");
//Cipher c = Cipher.getInstance("AES");
//c.init(Cipher.ENCRYPT_MODE, key);
//CipherOutputStream os = new CipherOutputStream(new FileOutputStream(db), c);
//ObjectOutputStream oos = new ObjectOutputStream(os);
ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(db));
oos.writeObject(contactManager);
oos.writeObject(registrar);
oos.flush();
......
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