android.gov.nist.javax.sip.clientauthutils

Class AuthenticationHelperImpl

java.lang.Object

android.gov.nist.javax.sip.clientauthutils.AuthenticationHelperImpl

All Implemented Interfaces:

AuthenticationHelper

public class AuthenticationHelperImpl
extends Object
implements AuthenticationHelper

The class handles authentication challenges, caches user credentials and takes care (through the SecurityAuthority interface) about retrieving passwords.

Since:

2.0

Author:

Emil Ivov, Jeroen van Bemmel, M. Ranganathan

Constructor Summary

Constructors

Constructor and Description
AuthenticationHelperImpl(SIPTransactionStack sipStack, AccountManager accountManager, HeaderFactory headerFactory) Default constructor for the security manager.
AuthenticationHelperImpl(SIPTransactionStack sipStack, SecureAccountManager accountManager, HeaderFactory headerFactory) Default constructor for the security manager.

Method Summary

Methods

Modifier and Type	Method and Description
ClientTransaction	handleChallenge(Response challenge, ClientTransaction challengedTransaction, SipProvider transactionCreator, int cacheTime) Uses securityAuthority to determinie a set of valid user credentials for the specified Response (Challenge) and appends it to the challenged request so that it could be retransmitted.
ClientTransaction	handleChallenge(Response challenge, ClientTransaction challengedTransaction, SipProvider transactionCreator, int cacheTime, boolean looseRouting) Uses securityAuthority to determinie a set of valid user credentials for the specified Response (Challenge) and appends it to the challenged request so that it could be retransmitted.
void	removeCachedAuthenticationHeaders(String callId) Remove cached entry.
void	setAuthenticationHeaders(Request request) Attach authentication headers to the given request.

Methods inherited from class java.lang.Object

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

Constructor Detail

AuthenticationHelperImpl

public AuthenticationHelperImpl(SIPTransactionStack sipStack,
                        AccountManager accountManager,
                        HeaderFactory headerFactory)

Default constructor for the security manager. There is one Account manager. There is one SipSecurity manager for every user name,

Parameters:

sipStack - -- our stack.

accountManager - -- an implementation of the AccountManager interface.

headerFactory - -- header factory.

AuthenticationHelperImpl

public AuthenticationHelperImpl(SIPTransactionStack sipStack,
                        SecureAccountManager accountManager,
                        HeaderFactory headerFactory)

Default constructor for the security manager. There is one Account manager. There is one SipSecurity manager for every user name,

Parameters:

sipStack - -- our stack.

accountManager - -- an implementation of the AccountManager interface.

headerFactory - -- header factory.

Method Detail

handleChallenge

public ClientTransaction handleChallenge(Response challenge,
                                ClientTransaction challengedTransaction,
                                SipProvider transactionCreator,
                                int cacheTime)
                                  throws SipException,
                                         NullPointerException

Description copied from interface: AuthenticationHelper

Uses securityAuthority to determinie a set of valid user credentials for the specified Response (Challenge) and appends it to the challenged request so that it could be retransmitted.

Specified by:

handleChallenge in interface AuthenticationHelper

Parameters:

challenge - the 401/407 challenge response

challengedTransaction - the transaction established by the challenged request

transactionCreator - the JAIN SipProvider that we should use to create the new transaction.

cacheTime - The amount of time (seconds ) for which the authentication helper will keep a reference to the generated credentials in a cache. If you specify -1, then the authentication credentials are cached until you remove them from the cache. If you choose this option, make sure you remove the cached headers or you will have a memory leak.

Returns:

a transaction containing a re-originated request with the necessary authorization header.

Throws:

SipException - if we get an exception white creating the new transaction

NullPointerException - if an argument or a header is null.

handleChallenge

public ClientTransaction handleChallenge(Response challenge,
                                ClientTransaction challengedTransaction,
                                SipProvider transactionCreator,
                                int cacheTime,
                                boolean looseRouting)
                                  throws SipException,
                                         NullPointerException

Description copied from interface: AuthenticationHelper

Uses securityAuthority to determinie a set of valid user credentials for the specified Response (Challenge) and appends it to the challenged request so that it could be retransmitted.

Specified by:

handleChallenge in interface AuthenticationHelper

Parameters:

challenge - the 401/407 challenge response

challengedTransaction - the transaction established by the challenged request

transactionCreator - the JAIN SipProvider that we should use to create the new transaction.

cacheTime - The amount of time (seconds ) for which the authentication helper will keep a reference to the generated credentials in a cache. If you specify -1, then the authentication credentials are cached until you remove them from the cache. If you choose this option, make sure you remove the cached headers or you will have a memory leak.

looseRouting - avoid setting maddr and port on the request uri before calculating the response

Returns:

a transaction containing a re-originated request with the necessary authorization header.

Throws:

SipException - if we get an exception white creating the new transaction

NullPointerException - if an argument or a header is null.

setAuthenticationHeaders

public void setAuthenticationHeaders(Request request)

Description copied from interface: AuthenticationHelper

Attach authentication headers to the given request. This looks up the credential cache and picks up any stored authentication headers for the given call ID and attaches it to the request.

Specified by:

setAuthenticationHeaders in interface AuthenticationHelper

Parameters:

request - - the request for which we attach the authentication headers.

removeCachedAuthenticationHeaders

public void removeCachedAuthenticationHeaders(String callId)

Description copied from interface: AuthenticationHelper

Remove cached entry.

Specified by:

removeCachedAuthenticationHeaders in interface AuthenticationHelper

Parameters:

callId - -- the call Id for which we want to remove the cached headers.