/** Increments the number of packets sent from the server to the client. */
public void incrementServerPacketCount() {
serverPacketCount++;
lastActiveDate = System.currentTimeMillis();
}
/**
* The session represents a connection between the server and a client (c2s) or another server (s2s)
* as well as a connection with a component. Authentication and user accounts are associated with
* c2s connections while s2s has an optional authentication association but no single user user.
*
* <p>Obtain object managers from the session in order to access server resources.
*
* @author Gaston Dombiak
*/
public abstract class LocalSession implements Session {
private static final Logger Log = LoggerFactory.getLogger(LocalSession.class);
/** The utf-8 charset for decoding and encoding Jabber packet streams. */
protected static String CHARSET = "UTF-8";
/** The Address this session is authenticated as. */
private JID address;
/** The stream id for this session (random and unique). */
private StreamID streamID;
/** The current session status. */
protected int status = STATUS_CONNECTED;
/** The connection that this session represents. */
protected Connection conn;
protected SessionManager sessionManager;
private String serverName;
private long startDate = System.currentTimeMillis();
private long lastActiveDate;
private long clientPacketCount = 0;
private long serverPacketCount = 0;
/**
* Session temporary data. All data stored in this <code>Map</code> disapear when session
* finishes.
*/
private final Map<String, Object> sessionData = new HashMap<String, Object>();
/**
* Creates a session with an underlying connection and permission protection.
*
* @param serverName domain of the XMPP server where the new session belongs.
* @param connection The connection we are proxying.
* @param streamID unique identifier for this session.
*/
public LocalSession(String serverName, Connection connection, StreamID streamID) {
conn = connection;
this.streamID = streamID;
this.serverName = serverName;
String id = streamID.getID();
this.address = new JID(null, serverName, id, true);
this.sessionManager = SessionManager.getInstance();
}
/**
* Obtain the address of the user. The address is used by services like the core server packet
* router to determine if a packet should be sent to the handler. Handlers that are working on
* behalf of the server should use the generic server hostname address (e.g. server.com).
*
* @return the address of the packet handler.
*/
public JID getAddress() {
return address;
}
/**
* Sets the new address of this session. The address is used by services like the core server
* packet router to determine if a packet should be sent to the handler. Handlers that are working
* on behalf of the server should use the generic server hostname address (e.g. server.com).
*
* @param address the new address of this session.
*/
public void setAddress(JID address) {
this.address = address;
}
/**
* Returns the connection associated with this Session.
*
* @return The connection for this session
*/
public Connection getConnection() {
return conn;
}
/**
* Obtain the current status of this session.
*
* @return The status code for this session
*/
public int getStatus() {
return status;
}
/**
* Set the new status of this session. Setting a status may trigger certain events to occur
* (setting a closed status will close this session).
*
* @param status The new status code for this session
*/
public void setStatus(int status) {
this.status = status;
}
/**
* Obtain the stream ID associated with this sesison. Stream ID's are generated by the server and
* should be unique and random.
*
* @return This session's assigned stream ID
*/
public StreamID getStreamID() {
return streamID;
}
/**
* Obtain the name of the server this session belongs to.
*
* @return the server name.
*/
public String getServerName() {
return serverName;
}
/**
* Obtain the date the session was created.
*
* @return the session's creation date.
*/
public Date getCreationDate() {
return new Date(startDate);
}
/**
* Obtain the time the session last had activity.
*
* @return The last time the session received activity.
*/
public Date getLastActiveDate() {
return new Date(lastActiveDate);
}
/** Increments the number of packets sent from the client to the server. */
public void incrementClientPacketCount() {
clientPacketCount++;
lastActiveDate = System.currentTimeMillis();
}
/** Increments the number of packets sent from the server to the client. */
public void incrementServerPacketCount() {
serverPacketCount++;
lastActiveDate = System.currentTimeMillis();
}
/**
* Obtain the number of packets sent from the client to the server.
*
* @return The number of packets sent from the client to the server.
*/
public long getNumClientPackets() {
return clientPacketCount;
}
/**
* Obtain the number of packets sent from the server to the client.
*
* @return The number of packets sent from the server to the client.
*/
public long getNumServerPackets() {
return serverPacketCount;
}
/**
* Saves given session data. Data are saved to temporary storage only and are accessible during
* this session life only and only from this session instance.
*
* @param key a <code>String</code> value of stored data key ID.
* @param value a <code>Object</code> value of data stored in session.
* @see #getSessionData(String)
*/
public void setSessionData(String key, Object value) {
synchronized (sessionData) {
sessionData.put(key, value);
}
}
/**
* Retrieves session data. This method gives access to temporary session data only. You can
* retrieve earlier saved data giving key ID to receive needed value. Please see {@link
* #setSessionData(String, Object)} description for more details.
*
* @param key a <code>String</code> value of stored data ID.
* @return a <code>Object</code> value of data for given key.
* @see #setSessionData(String, Object)
*/
public Object getSessionData(String key) {
synchronized (sessionData) {
return sessionData.get(key);
}
}
/**
* Removes session data. Please see {@link #setSessionData(String, Object)} description for more
* details.
*
* @param key a <code>String</code> value of stored data ID.
* @see #setSessionData(String, Object)
*/
public void removeSessionData(String key) {
synchronized (sessionData) {
sessionData.remove(key);
}
}
public void process(Packet packet) {
// Check that the requested packet can be processed
if (canProcess(packet)) {
// Perform the actual processing of the packet. This usually implies sending
// the packet to the entity
try {
// Invoke the interceptors before we send the packet
InterceptorManager.getInstance().invokeInterceptors(packet, this, false, false);
deliver(packet);
// Invoke the interceptors after we have sent the packet
InterceptorManager.getInstance().invokeInterceptors(packet, this, false, true);
} catch (PacketRejectedException e) {
// An interceptor rejected the packet so do nothing
} catch (Exception e) {
Log.error(LocaleUtils.getLocalizedString("admin.error"), e);
}
} else {
// http://xmpp.org/extensions/xep-0016.html#protocol-error
if (packet instanceof Message) {
// For message stanzas, the server SHOULD return an error, which SHOULD be
// <service-unavailable/>.
Message message = (Message) packet;
Message result = message.createCopy();
result.setTo(message.getFrom());
result.setError(PacketError.Condition.service_unavailable);
XMPPServer.getInstance().getRoutingTable().routePacket(message.getFrom(), result, true);
} else if (packet instanceof IQ) {
// For IQ stanzas of type "get" or "set", the server MUST return an error, which SHOULD be
// <service-unavailable/>.
// IQ stanzas of other types MUST be silently dropped by the server.
IQ iq = (IQ) packet;
if (iq.getType() == IQ.Type.get || iq.getType() == IQ.Type.set) {
IQ result = IQ.createResultIQ(iq);
result.setError(PacketError.Condition.service_unavailable);
XMPPServer.getInstance().getRoutingTable().routePacket(iq.getFrom(), result, true);
}
}
}
}
/**
* Returns true if the specified packet can be delivered to the entity. Subclasses will use
* different criterias to determine of processing is allowed or not. For instance, client sessions
* will use privacy lists while outgoing server sessions will always allow this action.
*
* @param packet the packet to analyze if it must be blocked.
* @return true if the specified packet must be blocked.
*/
abstract boolean canProcess(Packet packet);
abstract void deliver(Packet packet) throws UnauthorizedException;
public void deliverRawText(String text) {
if (conn != null) {
conn.deliverRawText(text);
}
}
/**
* Returns a text with the available stream features. Each subclass may return different values
* depending whether the session has been authenticated or not.
*
* @return a text with the available stream features or <tt>null</tt> to add nothing.
*/
public abstract String getAvailableStreamFeatures();
public void close() {
if (conn != null) {
conn.close();
}
}
public boolean validate() {
return conn.validate();
}
public boolean isSecure() {
return conn.isSecure();
}
public boolean isClosed() {
return conn.isClosed();
}
public String getHostAddress() throws UnknownHostException {
return conn.getHostAddress();
}
public String getHostName() throws UnknownHostException {
return conn.getHostName();
}
@Override
public String toString() {
return super.toString() + " status: " + status + " address: " + address + " id: " + streamID;
}
protected static int[] decodeVersion(String version) {
int[] answer = new int[] {0, 0};
String[] versionString = version.split("\\.");
answer[0] = Integer.parseInt(versionString[0]);
answer[1] = Integer.parseInt(versionString[1]);
return answer;
}
/**
* Returns true if the other peer of this session presented a self-signed certificate. When using
* self-signed certificate for server-2-server sessions then SASL EXTERNAL will not be used and
* instead server-dialback will be preferred for vcerifying the identify of the remote server.
*
* @return true if the other peer of this session presented a self-signed certificate.
*/
public boolean isUsingSelfSignedCertificate() {
return conn.isUsingSelfSignedCertificate();
}
}
/** Increments the number of packets sent from the client to the server. */
public void incrementClientPacketCount() {
clientPacketCount++;
lastActiveDate = System.currentTimeMillis();
}
