/**
* Method is responsible for processing incoming subscription request (i.e. in the receivers
* session manager).
*
* <p>If the contact is already subscribed the an auto-reply with type='subscribded' is sent,
* otherwise contact is added to the roster (if it's missing/there is no current subscription),
* sets the subscription type to {@code PresenceType.in_subscribe} and subsequently broadcast
* presence update to all connected resources.
*
* @param packet packet is which being processed.
* @param session user session which keeps all the user session data and also gives an access to
* the user's repository data.
* @param results this a collection with packets which have been generated as input packet
* processing results.
* @param settings this map keeps plugin specific settings loaded from the Tigase server
* configuration.
* @param pres_type specifies type of the presence.
* @throws NoConnectionIdException
* @throws NotAuthorizedException
* @throws TigaseDBException
*/
protected void processInSubscribe(
Packet packet,
XMPPResourceConnection session,
Queue<Packet> results,
Map<String, Object> settings,
RosterAbstract.PresenceType pres_type)
throws NotAuthorizedException, TigaseDBException, NoConnectionIdException {
// If the buddy is already subscribed then auto-reply with subscribed
// presence stanza.
if (roster_util.isSubscribedFrom(session, packet.getStanzaFrom())) {
sendPresence(
StanzaType.subscribed,
session.getJID().copyWithoutResource(),
packet.getStanzaFrom(),
results,
null);
} else {
RosterAbstract.SubscriptionType curr_sub =
roster_util.getBuddySubscription(session, packet.getStanzaFrom());
if (curr_sub == null) {
roster_util.addBuddy(session, packet.getStanzaFrom(), null, null, null);
} // end of if (curr_sub == null)
roster_util.updateBuddySubscription(session, pres_type, packet.getStanzaFrom());
if (!autoAuthorize) {
updatePresenceChange(packet, session, results);
} else {
roster_util.setBuddySubscription(
session,
RosterAbstract.SubscriptionType.both,
packet.getStanzaFrom().copyWithoutResource());
}
} // end of else
if (autoAuthorize) {
roster_util.updateBuddyChange(
session,
results,
roster_util.getBuddyItem(session, packet.getStanzaFrom().copyWithoutResource()));
broadcastProbe(session, results, settings);
sendPresence(StanzaType.subscribed, session.getJID(), packet.getStanzaFrom(), results, null);
}
}
/**
* Method is responsible for processing outgoing subscribed and unsubscribed presence (i.e. in the
* sender session manager).
*
* <p>Presence packet is forwarded to the destination with the JID stripped from the resource, a
* subscription state is being updated and, in case there was a change, a roster push is being
* sent to all user resources. Also, in case of presence type out_subscribed server send current
* presence to the user from each of the contact's available resources. For the presence type
* out_unsubscribed an unavailable presence is sent.
*
* @param packet packet is which being processed.
* @param session user session which keeps all the user session data and also gives an access to
* the user's repository data.
* @param results this a collection with packets which have been generated as input packet
* processing results.
* @param settings this map keeps plugin specific settings loaded from the Tigase server
* configuration.
* @param pres_type specifies type of the presence.
* @throws NoConnectionIdException
* @throws NotAuthorizedException
* @throws TigaseDBException
*/
protected void processOutSubscribed(
Packet packet,
XMPPResourceConnection session,
Queue<Packet> results,
Map<String, Object> settings,
RosterAbstract.PresenceType pres_type)
throws NotAuthorizedException, TigaseDBException, NoConnectionIdException {
// According to RFC-3921 I must forward all these kind presence
// requests, it allows to re-synchronize
// subscriptions in case of synchronization loss
forwardPresence(results, packet, session.getJID().copyWithoutResource());
Element initial_presence = session.getPresence();
JID buddy = packet.getStanzaTo().copyWithoutResource();
boolean subscr_changed = roster_util.updateBuddySubscription(session, pres_type, buddy);
if (autoAuthorize && (pres_type == RosterAbstract.PresenceType.out_subscribed)) {
roster_util.setBuddySubscription(
session, RosterAbstract.SubscriptionType.both, buddy.copyWithoutResource());
}
if (subscr_changed) {
roster_util.updateBuddyChange(session, results, roster_util.getBuddyItem(session, buddy));
if (initial_presence != null) {
if (pres_type == RosterAbstract.PresenceType.out_subscribed) {
// The contact's server MUST then also send current presence to the user
// from each of the contact's available resources.
List<XMPPResourceConnection> activeSessions = session.getActiveSessions();
for (XMPPResourceConnection userSessions : activeSessions) {
Element presence = userSessions.getPresence();
sendPresence(StanzaType.available, userSessions.getjid(), buddy, results, presence);
}
roster_util.setPresenceSent(session, buddy, true);
} else {
sendPresence(StanzaType.unavailable, session.getJID(), buddy, results, null);
}
} // end of if (subscr_changed)
}
}
/**
* Method is responsible for processing outgoing subscribe and unsubscribe presence (i.e. in the
* sender session manager).
*
* <p>Presence packet is forwarded to the destination with the JID stripped from the resource.
*
* <p>In case of {@code PresenceType.out_subscribe} packet type contact is added to the roster (in
* case it was missing), a subscription state is being updated and, in case there was a change, a
* roster push is being sent to all user resources.
*
* <p>In case of {@code PresenceType.out_unsubscribe} method updates contact subscription (and
* generates roster push if there was a change) and if the resulting contact subscription is NONE
* then contact is removed from the roster.
*
* @param packet packet is which being processed.
* @param session user session which keeps all the user session data and also gives an access to
* the user's repository data.
* @param results this a collection with packets which have been generated as input packet
* processing results.
* @param settings this map keeps plugin specific settings loaded from the Tigase server
* configuration.
* @param pres_type specifies type of the presence.
* @throws NoConnectionIdException
* @throws NotAuthorizedException
* @throws TigaseDBException
*/
protected void processOutSubscribe(
Packet packet,
XMPPResourceConnection session,
Queue<Packet> results,
Map<String, Object> settings,
RosterAbstract.PresenceType pres_type)
throws NotAuthorizedException, TigaseDBException, NoConnectionIdException {
// According to RFC-3921 I must forward all these kind presence
// requests, it allows to resynchronize
// subscriptions in case of synchronization loss
boolean subscr_changed = false;
forwardPresence(results, packet, session.getJID().copyWithoutResource());
RosterAbstract.SubscriptionType current_subscription =
roster_util.getBuddySubscription(session, packet.getStanzaTo());
if (pres_type == RosterAbstract.PresenceType.out_subscribe) {
if (current_subscription == null) {
roster_util.addBuddy(session, packet.getStanzaTo(), null, null, null);
} // end of if (current_subscription == null)
subscr_changed =
roster_util.updateBuddySubscription(session, pres_type, packet.getStanzaTo());
if (autoAuthorize) {
roster_util.setBuddySubscription(
session,
RosterAbstract.SubscriptionType.both,
packet.getStanzaTo().copyWithoutResource());
}
if (subscr_changed) {
roster_util.updateBuddyChange(
session, results, roster_util.getBuddyItem(session, packet.getStanzaTo()));
} // end of if (subscr_changed)
} else {
if (log.isLoggable(Level.FINEST)) {
log.log(Level.FINEST, "out_subscribe: current_subscription = " + current_subscription);
}
if (current_subscription != null) {
subscr_changed =
roster_util.updateBuddySubscription(session, pres_type, packet.getStanzaTo());
current_subscription = roster_util.getBuddySubscription(session, packet.getStanzaTo());
if (subscr_changed) {
roster_util.updateBuddyChange(
session, results, roster_util.getBuddyItem(session, packet.getStanzaTo()));
} // end of if (subscr_changed)
if (SUB_NONE.contains(current_subscription)) {
roster_util.removeBuddy(session, packet.getStanzaTo());
} // end of if (current_subscription == null)
}
}
}
/**
* {@inheritDoc} <br>
* <br>
* Performs processing of <em>presence</em> packets and calls different methods for particular
* {@link PresenceType}
*/
@SuppressWarnings({"unchecked", "fallthrough"})
@Override
public void process(
final Packet packet,
final XMPPResourceConnection session,
final NonAuthUserRepository repo,
final Queue<Packet> results,
final Map<String, Object> settings)
throws XMPPException {
if (session == null) {
if (log.isLoggable(Level.FINE)) {
log.log(Level.FINE, "Session is null, ignoring packet: {0}", packet);
}
return;
} // end of if (session == null)
if (!session.isAuthorized()) {
if (log.isLoggable(Level.FINE)) {
log.log(Level.FINE, "Session is not authorized, ignoring packet: {0}", packet);
}
return;
}
// Synchronization to avoid conflict with login/logout events
// processed in the SessionManager asynchronously
synchronized (session) {
try {
RosterAbstract.PresenceType pres_type = roster_util.getPresenceType(session, packet);
if (pres_type == null) {
log.log(Level.INFO, "Invalid presence found: {0}", packet);
return;
} // end of if (type == null)
if (log.isLoggable(Level.FINEST)) {
log.log(
Level.FINEST,
"{0} | {1} presence found: {2}",
new Object[] {session.getBareJID().toString(), pres_type, packet});
}
// All 'in' subscription presences must have a valid from address
switch (pres_type) {
case in_unsubscribe:
case in_subscribe:
case in_unsubscribed:
case in_subscribed:
if (packet.getStanzaFrom() == null) {
if (log.isLoggable(Level.FINE)) {
log.fine(
"'in' subscription presence without valid 'from' address, "
+ "dropping packet: "
+ packet);
}
return;
}
if (session.isUserId(packet.getStanzaFrom().getBareJID())) {
if (log.isLoggable(Level.FINE)) {
log.log(
Level.FINE,
"''in'' subscription to myself, not allowed, returning "
+ "error for packet: "
+ "{0}",
packet);
}
results.offer(
Authorization.NOT_ALLOWED.getResponseMessage(
packet, "You can not subscribe to yourself.", false));
return;
}
// as per http://xmpp.org/rfcs/rfc6121.html#sub
// Implementation Note: When a server processes or generates an outbound
// presence stanza of type "subscribe", "subscribed", "unsubscribe",
// or "unsubscribed", the server MUST stamp the outgoing presence
// stanza with the bare JID <localpart@domainpart> of the sending entity,
// not the full JID <localpart@domainpart/resourcepart>.
//
// we enforce this rule also for incomming presence subscirption packets
packet.initVars(
packet.getStanzaFrom().copyWithoutResource(),
session.getJID().copyWithoutResource());
break;
case out_subscribe:
case out_unsubscribe:
case out_subscribed:
case out_unsubscribed:
// Check wheher the destination address is correct to prevent
// broken/corrupted roster entries:
if ((packet.getStanzaTo() == null) || packet.getStanzaTo().toString().isEmpty()) {
results.offer(
Authorization.JID_MALFORMED.getResponseMessage(
packet, "The destination address is incorrect.", false));
return;
}
// According to RFC 3921 draft bis-3, both source and destination
// addresses must be BareJIDs, handled by initVars(...)
packet.initVars(
session.getJID().copyWithoutResource(), packet.getStanzaTo().copyWithoutResource());
break;
default:
break;
}
switch (pres_type) {
case out_subscribe:
case out_unsubscribe:
processOutSubscribe(packet, session, results, settings, pres_type);
break;
case out_subscribed:
case out_unsubscribed:
processOutSubscribed(packet, session, results, settings, pres_type);
break;
case in_subscribe:
processInSubscribe(packet, session, results, settings, pres_type);
break;
case in_unsubscribe:
processInUnsubscribe(packet, session, results, settings, pres_type);
break;
case in_subscribed:
processInSubscribed(packet, session, results, settings, pres_type);
break;
case in_unsubscribed:
processInUnsubscribed(packet, session, results, settings, pres_type);
break;
default:
results.offer(
Authorization.BAD_REQUEST.getResponseMessage(
packet, "Request type is incorrect", false));
break;
} // end of switch (type)
} catch (NotAuthorizedException e) {
log.log(
Level.INFO,
"Can not access user Roster, user session is not authorized yet: {0}",
packet);
log.log(Level.FINEST, "presence problem...", e);
} catch (TigaseDBException e) {
log.log(Level.WARNING, "Error accessing database for presence data: {0}", e);
} // end of try-catch
}
}
/**
* Method description
*
* @param packet
* @param session
* @param repo
* @param results
* @param settings
* @throws XMPPException
*/
@Override
public void process(
final Packet packet,
final XMPPResourceConnection session,
final NonAuthUserRepository repo,
final Queue<Packet> results,
final Map<String, Object> settings)
throws XMPPException {
if (session == null) {
return;
} // end of if (session == null)
if (!session.isAuthorized()) {
results.offer(
session
.getAuthState()
.getResponseMessage(packet, "Session is not yet authorized.", false));
return;
} // end of if (!session.isAuthorized())
// TODO: test what happens if resource is bound multiple times for the same
// user session. in particular if XMPPSession object removes the old
// resource from the list.
Element request = packet.getElement();
StanzaType type = packet.getType();
try {
switch (type) {
case set:
String resource = request.getChildCDataStaticStr(Iq.IQ_BIND_RESOURCE_PATH);
try {
if ((resource == null) || resource.trim().isEmpty()) {
resource = resourceDefPrefix + (++resGenerator);
session.setResource(resource);
} else {
try {
session.setResource(resource);
} catch (TigaseStringprepException ex) {
// User provided resource is invalid, generating different
// server one
log.log(
Level.INFO,
"Incrrect resource provided by the user: {0}, generating a "
+ "different one by the server.",
resource);
resource = resourceDefPrefix + (++resGenerator);
session.setResource(resource);
}
} // end of if (resource == null) else
} catch (TigaseStringprepException ex) {
log.log(
Level.WARNING,
"stringprep problem with the server generated resource: {0}",
resource);
}
packet.initVars(session.getJID(), packet.getStanzaTo());
// session.putSessionData(RESOURCE_KEY, "true");
results.offer(packet.okResult(new Element("jid", session.getJID().toString()), 1));
break;
default:
results.offer(
Authorization.BAD_REQUEST.getResponseMessage(
packet, "Bind type is incorrect", false));
break;
} // end of switch (type)
} catch (NotAuthorizedException e) {
results.offer(
session
.getAuthState()
.getResponseMessage(packet, "Session is not yet authorized.", false));
} // end of try-catch
}