File	Doc	Category	Size	Date	Package
KerberosTicket.java	API Doc	Java SE 5 API	19569	Fri Aug 26 14:57:48 BST 2005	javax.security.auth.kerberos

KerberosTicket

• java.lang.Object

Fields Summary
private static final long	serialVersionUID
private static final int	FORWARDABLE_TICKET_FLAG
private static final int	FORWARDED_TICKET_FLAG
private static final int	PROXIABLE_TICKET_FLAG
private static final int	PROXY_TICKET_FLAG
private static final int	POSTDATED_TICKET_FLAG
private static final int	RENEWABLE_TICKET_FLAG
private static final int	INITIAL_TICKET_FLAG
private static final int	NUM_FLAGS
private byte[]	asn1Encoding ASN.1 DER Encoding of the Ticket as defined in the Kerberos Protocol Specification RFC1510.
private KeyImpl	sessionKey KeyImpl is serialized by writing out the ASN1 Encoded bytes of the encryption key. The ASN1 encoding is defined in RFC1510 and as follows: EncryptionKey ::= SEQUENCE { keytype[0] INTEGER, keyvalue[1] OCTET STRING }
private boolean[]	flags Ticket Flags as defined in the Kerberos Protocol Specification RFC1510.
private Date	authTime Time of initial authentication
private Date	startTime Time after which the ticket is valid.
private Date	endTime Time after which the ticket will not be honored. (its expiration time).
private Date	renewTill For renewable Tickets it indicates the maximum endtime that may be included in a renewal. It can be thought of as the absolute expiration time for the ticket, including all renewals. This field may be null for tickets that are not renewable.
private KerberosPrincipal	client Client that owns the service ticket
private KerberosPrincipal	server The service for which the ticket was issued.
private InetAddress[]	clientAddresses The addresses from where the ticket may be used by the client. This field may be null when the ticket is usable from any address.
private transient boolean	destroyed

Constructors Summary

public KerberosTicket(byte[] asn1Encoding, KerberosPrincipal client, KerberosPrincipal server, byte[] sessionKey, int keyType, boolean[] flags, Date authTime, Date startTime, Date endTime, Date renewTill, InetAddress[] clientAddresses) Constructs a KerberosTicket using credentials information that a client either receives from a KDC or reads from a cache. param asn1Encoding the ASN.1 encoding of the ticket as defined by the Kerberos protocol specification. param client the client that owns this service ticket param server the service that this ticket is for param sessionKey the raw bytes for the session key that must be used to encrypt the authenticator that will be sent to the server param keyType the key type for the session key as defined by the Kerberos protocol specification. param flags the ticket flags. Each element in this array indicates the value for the corresponding bit in the ASN.1 BitString that represents the ticket flags. If the number of elements in this array is less than the number of flags used by the Kerberos protocol, then the missing flags will be filled in with false. param authTime the time of initial authentication for the client param startTime the time after which the ticket will be valid. This may be null in which case the value of authTime is treated as the startTime. param endTime the time after which the ticket will no longer be valid param renewTill an absolute expiration time for the ticket, including all renewal that might be possible. This field may be null for tickets that are not renewable. param clientAddresses the addresses from where the ticket may be used by the client. This field may be null when the ticket is usable from any address. init(asn1Encoding, client, server, sessionKey, keyType, flags, authTime, startTime, endTime, renewTill, clientAddresses);

Methods Summary
public void	destroy() Destroys the ticket and destroys any sensitive information stored in it. if (!destroyed) { Arrays.fill(asn1Encoding, (byte) 0); client = null; server = null; sessionKey.destroy(); flags = null; authTime = null; startTime = null; endTime = null; renewTill = null; clientAddresses = null; destroyed = true; }
public final java.util.Date	getAuthTime() Returns the time that the client was authenticated. return the time that the client was authenticated. return (authTime == null) ? null : new Date(authTime.getTime());
public final javax.security.auth.kerberos.KerberosPrincipal	getClient() Returns the client principal associated with this ticket. return the client principal. return client;
public final java.net.InetAddress[]	getClientAddresses() Returns a list of addresses from where the ticket can be used. return ths list of addresses or null, if the field was not provided. return (clientAddresses == null? null: (InetAddress[]) clientAddresses.clone());
public final byte[]	getEncoded() Returns an ASN.1 encoding of the entire ticket. return an ASN.1 encoding of the entire ticket. if (destroyed) throw new IllegalStateException("This ticket is no longer valid"); return (byte[]) asn1Encoding.clone();
public final java.util.Date	getEndTime() Returns the expiration time for this ticket's validity period. return the expiration time for this ticket's validity period. return (endTime == null) ? null : new Date(endTime.getTime());
public final boolean[]	getFlags() Returns the flags associated with this ticket. Each element in the returned array indicates the value for the corresponding bit in the ASN.1 BitString that represents the ticket flags. return the flags associated with this ticket. return (flags == null? null: (boolean[]) flags.clone());
public final java.util.Date	getRenewTill() Returns the latest expiration time for this ticket, including all renewals. This will return a null value for non-renewable tickets. return the latest expiration time for this ticket. return (renewTill == null) ? null: new Date(renewTill.getTime());
public final javax.security.auth.kerberos.KerberosPrincipal	getServer() Returns the service principal associated with this ticket. return the service principal. return server;
public final javax.crypto.SecretKey	getSessionKey() Returns the session key associated with this ticket. return the session key. if (destroyed) throw new IllegalStateException("This ticket is no longer valid"); return sessionKey;
public final int	getSessionKeyType() Returns the key type of the session key associated with this ticket as defined by the Kerberos Protocol Specification. return the key type of the session key associated with this ticket. see #getSessionKey() if (destroyed) throw new IllegalStateException("This ticket is no longer valid"); return sessionKey.getKeyType();
public final java.util.Date	getStartTime() Returns the start time for this ticket's validity period. return the start time for this ticket's validity period. return (startTime == null) ? null : new Date(startTime.getTime());
private void	init(byte[] asn1Encoding, javax.security.auth.kerberos.KerberosPrincipal client, javax.security.auth.kerberos.KerberosPrincipal server, byte[] sessionKey, int keyType, boolean[] flags, java.util.Date authTime, java.util.Date startTime, java.util.Date endTime, java.util.Date renewTill, java.net.InetAddress[] clientAddresses) if (asn1Encoding == null) throw new IllegalArgumentException("ASN.1 encoding of ticket" + " cannot be null"); this.asn1Encoding = asn1Encoding.clone(); if (client == null) throw new IllegalArgumentException("Client name in ticket" + " cannot be null"); this.client = client; if (server == null) throw new IllegalArgumentException("Server name in ticket" + " cannot be null"); this.server = server; if (sessionKey == null) throw new IllegalArgumentException("Session key for ticket" + " cannot be null"); this.sessionKey = new KeyImpl(sessionKey, keyType); if (flags != null) { if (flags.length >= NUM_FLAGS) this.flags = (boolean[]) flags.clone(); else { this.flags = new boolean[NUM_FLAGS]; // Fill in whatever we have for (int i = 0; i < flags.length; i++) this.flags[i] = flags[i]; } } else this.flags = new boolean[NUM_FLAGS]; if (this.flags[RENEWABLE_TICKET_FLAG]) { if (renewTill == null) throw new IllegalArgumentException("The renewable period " + "end time cannot be null for renewable tickets."); this.renewTill = renewTill; } if (authTime == null) throw new IllegalArgumentException("Authentication time of ticket" + " cannot be null"); this.authTime = authTime; this.startTime = (startTime != null? startTime: authTime); if (endTime == null) throw new IllegalArgumentException("End time for ticket validity" + " cannot be null"); this.endTime = endTime; if (clientAddresses != null) this.clientAddresses = (InetAddress[]) clientAddresses.clone();
public boolean	isCurrent() Determines if this ticket is still current. return (System.currentTimeMillis() <= getEndTime().getTime());
public boolean	isDestroyed() Determines if this ticket has been destroyed. return destroyed;
public final boolean	isForwardable() Determines if this ticket is forwardable. return true if this ticket is forwardable, false if not. return flags[FORWARDABLE_TICKET_FLAG];
public final boolean	isForwarded() Determines if this ticket had been forwarded or was issued based on authentication involving a forwarded ticket-granting ticket. return true if this ticket had been forwarded or was issued based on authentication involving a forwarded ticket-granting ticket, false otherwise. return flags[FORWARDED_TICKET_FLAG];
public final boolean	isInitial() Determines if this ticket was issued using the Kerberos AS-Exchange protocol, and not issued based on some ticket-granting ticket. return true if this ticket was issued using the Kerberos AS-Exchange protocol, false if not. return flags[INITIAL_TICKET_FLAG];
public final boolean	isPostdated() Determines is this ticket is post-dated. return true if this ticket is post-dated, false if not. return flags[POSTDATED_TICKET_FLAG];
public final boolean	isProxiable() Determines if this ticket is proxiable. return true if this ticket is proxiable, false if not. return flags[PROXIABLE_TICKET_FLAG];
public final boolean	isProxy() Determines is this ticket is a proxy-ticket. return true if this ticket is a proxy-ticket, false if not. return flags[PROXY_TICKET_FLAG];
public final boolean	isRenewable() Determines is this ticket is renewable. If so, the {@link #refresh() refresh} method can be called, assuming the validity period for renewing is not already over. return true if this ticket is renewable, false if not. return flags[RENEWABLE_TICKET_FLAG];
public void	refresh() Extends the validity period of this ticket. The ticket will contain a new session key if the refresh operation succeeds. The refresh operation will fail if the ticket is not renewable or the latest allowable renew time has passed. Any other error returned by the KDC will also cause this method to fail. Note: This method is not synchronized with the the accessor methods of this object. Hence callers need to be aware of multiple threads that might access this and try to renew it at the same time. throws RefreshFailedException if the ticket is not renewable, or the latest allowable renew time has passed, or the KDC returns some error. see #isRenewable() see #getRenewTill() if (destroyed) throw new RefreshFailedException("A destroyed ticket " + "cannot be renewd."); if (!isRenewable()) throw new RefreshFailedException("This ticket is not renewable"); if (System.currentTimeMillis() > getRenewTill().getTime()) throw new RefreshFailedException("This ticket is past " + "its last renewal time."); Throwable e = null; sun.security.krb5.Credentials krb5Creds = null; try { krb5Creds = new sun.security.krb5.Credentials(asn1Encoding, client.toString(), server.toString(), sessionKey.getEncoded(), sessionKey.getKeyType(), flags, authTime, startTime, endTime, renewTill, clientAddresses); krb5Creds = krb5Creds.renew(); } catch (sun.security.krb5.KrbException krbException) { e = krbException; } catch (java.io.IOException ioException) { e = ioException; } if (e != null) { RefreshFailedException rfException = new RefreshFailedException("Failed to renew Kerberos Ticket " + "for client " + client + " and server " + server + " - " + e.getMessage()); rfException.initCause(e); throw rfException; } /* * In case multiple threads try to refresh it at the same time. */ synchronized (this) { try { this.destroy(); } catch (DestroyFailedException dfException) { // Squelch it since we don't care about the old ticket. } init(krb5Creds.getEncoded(), new KerberosPrincipal(krb5Creds.getClient().getName()), new KerberosPrincipal(krb5Creds.getServer().getName()), krb5Creds.getSessionKey().getBytes(), krb5Creds.getSessionKey().getEType(), krb5Creds.getFlags(), krb5Creds.getAuthTime(), krb5Creds.getStartTime(), krb5Creds.getEndTime(), krb5Creds.getRenewTill(), krb5Creds.getClientAddresses()); destroyed = false; }
public java.lang.String	toString() if (destroyed) throw new IllegalStateException("This ticket is no longer valid"); StringBuffer caddrBuf = new StringBuffer(); if (clientAddresses != null) { for (int i = 0; i < clientAddresses.length; i++) { caddrBuf.append("clientAddresses[" + i + "] = " + clientAddresses[i].toString()); } } return ("Ticket (hex) = " + "\n" + (new HexDumpEncoder()).encode(asn1Encoding) + "\n" + "Client Principal = " + client.toString() + "\n" + "Server Principal = " + server.toString() + "\n" + "Session Key = " + sessionKey.toString() + "\n" + "Forwardable Ticket " + flags[FORWARDABLE_TICKET_FLAG] + "\n" + "Forwarded Ticket " + flags[FORWARDED_TICKET_FLAG] + "\n" + "Proxiable Ticket " + flags[PROXIABLE_TICKET_FLAG] + "\n" + "Proxy Ticket " + flags[PROXY_TICKET_FLAG] + "\n" + "Postdated Ticket " + flags[POSTDATED_TICKET_FLAG] + "\n" + "Renewable Ticket " + flags[RENEWABLE_TICKET_FLAG] + "\n" + "Initial Ticket " + flags[RENEWABLE_TICKET_FLAG] + "\n" + "Auth Time = " + authTime.toString() + "\n" + "Start Time = " + startTime.toString() + "\n" + "End Time = " + endTime.toString() + "\n" + "Renew Till = " + (renewTill == null ? "Null " : renewTill.toString()) + "\n" + "Client Addresses " + (clientAddresses == null ? " Null " : caddrBuf.toString() + "\n"));