org.jboss.security.negotiation.spnego.encoding

Class TokenParser

java.lang.Object

org.jboss.security.negotiation.spnego.encoding.TokenParser

public class TokenParser
extends Object

Parses a token to retrieve specific parts required.

Version:

$Revision: 1 $

Author:

Marcus Moyses

Constructor Summary

Constructors

Constructor and Description
TokenParser()

Method Summary

Modifier and Type	Method and Description
byte[]	decrypt(KerberosKey key, byte[] cipher) Decodes the data.
byte[]	getAP_REQ(InputStream is) Parses the InputStream until the AP_REQ is found.
byte[]	getEncryptedData(InputStream is) Parses the InputStream until the EncryptedData is found.
KerberosKey	getKrbKey(Subject sub, int keyType) Retrieves the private key from the Subject.
String[]	getNames(InputStream is) Parses the data to find all the principal names.
String	getPrincipalName() Returns the principal name of the client.
byte[]	getTicket(InputStream is) Parses the InputStream until the Ticket is found.
byte[]	getValueAt(InputStream is, byte type) Parses the InputStream until it finds the sequence at position indicated by the byte.
void	handleEncryptedData(InputStream is, int size, Subject subject) Decodes the encrypted data and parses the encrypted part to retrieve the client realm and principal.
boolean	isContextSpecific(byte tag, byte cntxtTag) Verify that the tag is the correct one.
void	parseToken(byte[] data, Subject subject) Method to be invoked to parse and decode the token.
byte[]	reset(byte[] data) Resets the size.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TokenParser

public TokenParser()

Method Detail

parseToken

public void parseToken(byte[] data,
                       Subject subject)
                throws Exception

Method to be invoked to parse and decode the token.

Parameters:

data - byte array containing the token

subject - Subject containing the private key

Throws:

Exception

getValueAt

public byte[] getValueAt(InputStream is,
                         byte type)
                  throws Exception

Parses the InputStream until it finds the sequence at position indicated by the byte.

Parameters:

is - InputStream to read

type - position in the sequence

Returns:

data found

Throws:

Exception

isContextSpecific

public boolean isContextSpecific(byte tag,
                                 byte cntxtTag)

Verify that the tag is the correct one.

Parameters:

tag - byte to verify

cntxtTag - byte to match

Returns:

true if match

getAP_REQ

public byte[] getAP_REQ(InputStream is)
                 throws Exception

Parses the InputStream until the AP_REQ is found.

Parameters:

is - InputStream to read

Returns:

the AP_REQ data

Throws:

Exception

getTicket

public byte[] getTicket(InputStream is)
                 throws Exception

Parses the InputStream until the Ticket is found.

Parameters:

is - InputStream to read

Returns:

the Ticket data

Throws:

Exception

getEncryptedData

public byte[] getEncryptedData(InputStream is)
                        throws Exception

Parses the InputStream until the EncryptedData is found.

Parameters:

is - InputStream to read

Returns:

the EncryptedData data

Throws:

Exception

handleEncryptedData

public void handleEncryptedData(InputStream is,
                                int size,
                                Subject subject)
                         throws Exception

Decodes the encrypted data and parses the encrypted part to retrieve the client realm and principal.

Parameters:

is - InputStream to read

size - encrypted data size

subject - Subject containing the private key

Throws:

Exception

getNames

public String[] getNames(InputStream is)
                  throws Exception

Parses the data to find all the principal names.

Parameters:

is - InputStream to read

Returns:

array of names

Throws:

Exception

getKrbKey

public KerberosKey getKrbKey(Subject sub,
                             int keyType)

Retrieves the private key from the Subject.

Parameters:

sub - SUbject containing the private key

keyType - type of the key

Returns:

the private key

decrypt

public byte[] decrypt(KerberosKey key,
                      byte[] cipher)
               throws NegotiationException

Decodes the data.

Parameters:

key - private key

cipher -

Returns:

decoded data

Throws:

NegotiationException

reset

public byte[] reset(byte[] data)

Resets the size.

Parameters:

data -

Returns:

getPrincipalName

public String getPrincipalName()

Returns the principal name of the client.

Returns:

principal name