Package org.wildfly.security.mechanism._private

Class MechanismUtil

java.lang.Object

org.wildfly.security.mechanism._private.MechanismUtil

public final class MechanismUtil
extends Object

Utils to be used by authentication mechanism (SASL or HTTP) implementations.

Author:

David M. Lloyd

Method Summary

Modifier and Type	Method	Description
static <R> R	computeIfAbsent(HttpScope scope, String key, Function<String,R> mappingFunction)	Get or compute the value for the given key in HttpScope, storing the computed value (if one is generated).
static <S extends Password> S	getPasswordCredential(String userName, CallbackHandler callbackHandler, Class<S> passwordType, String passwordAlgorithm, AlgorithmParameterSpec matchParameters, AlgorithmParameterSpec generateParameters, Supplier<Provider[]> providers, ElytronMessages log)	Get a password from a client or server callback, falling back to clear password if needed.
static void	handleCallbacks(ElytronMessages log, CallbackHandler callbackHandler, Callback... callbacks)	A varargs wrapper method for callback handler invocation.

Methods inherited from class java.lang.Object

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

Method Detail

getPasswordCredential

public static <S extends Password> S getPasswordCredential(String userName,
                                                           CallbackHandler callbackHandler,
                                                           Class<S> passwordType,
                                                           String passwordAlgorithm,
                                                           AlgorithmParameterSpec matchParameters,
                                                           AlgorithmParameterSpec generateParameters,
                                                           Supplier<Provider[]> providers,
                                                           ElytronMessages log)
                                                    throws AuthenticationMechanismException

Get a password from a client or server callback, falling back to clear password if needed. Note that the parameters, while optional, may be required on the client side of some mechanisms in order to ensure that the encoded password is compatible with the server challenge.

Type Parameters:

S - the password type

Parameters:

userName - the user name to report for error reporting purposes (must not be null)

callbackHandler - the callback handler (must not be null)

passwordType - the password class (must not be null)

passwordAlgorithm - the password algorithm name (must not be null)

matchParameters - the optional parameters to match (may be null)

generateParameters - the optional default parameters to use if the password must be generated (may be null)

providers - the security providers to use with the PasswordFactory

log - mechanism specific logger

Returns:

the password

Throws:

AuthenticationMechanismException - if there is an error retrieving the password

handleCallbacks

public static void handleCallbacks(ElytronMessages log,
                                   CallbackHandler callbackHandler,
                                   Callback... callbacks)
                            throws AuthenticationMechanismException,
                                   UnsupportedCallbackException

A varargs wrapper method for callback handler invocation.

Parameters:

log - the logger for error purposes

callbackHandler - the callback handler

callbacks - the callbacks

Throws:

AuthenticationMechanismException - if the callback handler fails for some reason

UnsupportedCallbackException - if the callback handler throws this exception

computeIfAbsent

public static <R> R computeIfAbsent(HttpScope scope,
                                    String key,
                                    Function<String,R> mappingFunction)

Get or compute the value for the given key in HttpScope, storing the computed value (if one is generated). The function must not generate a null value or an unspecified exception will result.

Type Parameters:

R - the type of returned value

Parameters:

scope - the HTTP scope to store computed value (must not be null)

key - the key to retrieve (must not be null)

mappingFunction - the function to apply to acquire the value (must not be null)

Returns:

the stored or new value (not null)