This article explains how WebSphere Application Server uses the default AuthorizationToken. Consider using the default AuthorizationToken when you are looking for a place to add string attributes that will get propagated downstream. However, make sure that the attributes that you add to the AuthorizationToken are specific to the user associated with the authenticated Subject. If they are not specific to a user, the attributes probably belong in the PropagationToken, which is also propagated with the request. For more information on the PropagationToken, see Default PropagationToken. To add attributes into the AuthorizationToken, you must plug in a custom login module into the various system login modules that are configured. Any login module configuration that has the com.ibm.ws.security.server.lm.wsMapDefaultInboundLoginModule implementation configured can receive propagated information and can generate propagation information that can be sent outbound to another server.
If propagated attributes are not presented to the login configuration during an initial login, a default AuthorizationToken is created in the wsMapDefaultInboundLoginModule after the login occurs in the ltpaLoginModule. A reference to the default AuthorizationToken can be obtained from the login() method using the sharedState hashmap. You must plug in the custom login module after the wsMapDefaultInboundLoginModule implementation for WebSphere Application Server to see the default AuthorizationToken..
For more information on the Java Authentication and Authorization Service (JAAS) programming model, see Security: Resources for learning.
public customLoginModule()
{
public void initialize(Subject subject, CallbackHandler callbackHandler,
Map sharedState, Map options)
{
// (For more information on initialization, see
// Custom login module development for a system login configuration.)
// Get a reference to the sharedState map that is passed in during initialization.
_sharedState = sharedState;
}
public boolean login() throws LoginException
{
// (For more information on what to during login, see
// Custom login module development for a system login configuration.)
// Look for the default AuthorizationToken in the shared state
defaultAuthzToken = (com.ibm.wsspi.security.token.AuthorizationToken)
sharedState.get
(com.ibm.wsspi.security.auth.callback.Constants.WSAUTHZTOKEN_KEY);
// Might not always have one of these generated. It depends on the login
// configuration setup.
if (defaultAuthzToken != null)
{
try
{
// Add a custom attribute
defaultAuthzToken.addAttribute("key1", "value1");
// Determine all of the attributes and values that exist in the token.
java.util.Enumeration listOfAttributes = defaultAuthorizationToken.
getAttributeNames();
while (listOfAttributes.hasMoreElements())
{
String key = (String) listOfAttributes.nextElement();
String[] values = (String[]) defaultAuthorizationToken.getAttributes (key);
for (int i=0; i<values.length; i++)
{
System.out.println ("Key: " + key + ", Value[" + i + "]: "
+ values[i]);
}
}
// Read the existing uniqueID attribute.
String[] uniqueID = defaultAuthzToken.getAttributes
(com.ibm.wsspi.security.token.AttributeNameConstants.
WSCREDENTIAL_UNIQUEID);
// Getthe uniqueID from the String[]
String unique_id = (uniqueID != null &&
uniqueID[0] != null) ? uniqueID[0] : "";
// Read the existing expiration attribute.
String[] expiration = defaultAuthzToken.getAttributes
(com.ibm.wsspi.security.token.AttributeNameConstants.
WSCREDENTIAL_EXPIRATION);
// An example of getting a long expiration value from the string array.
long expire_time = 0;
if (expiration != null && expiration[0] != null)
expire_time = Long.parseLong(expiration[0]);
// Read the existing display name attribute.
String[] securityName = defaultAuthzToken.getAttributes
(com.ibm.wsspi.security.token.AttributeNameConstants.
WSCREDENTIAL_SECURITYNAME);
// Get the display name from the String[]
String display_name = (securityName != null &&
securityName[0] != null) ? securityName[0] : "";
// Read the existing long securityName attribute.
String[] longSecurityName = defaultAuthzToken.getAttributes
(com.ibm.wsspi.security.token.AttributeNameConstants.
WSCREDENTIAL_LONGSECURITYNAME);
// Get the long security name from the String[]
String long_security_name = (longSecurityName != null &&
longSecurityName[0] != null) ? longSecurityName[0] : "";
// Read the existing group attribute.
String[] groupList = defaultAuthzToken.getAttributes
(com.ibm.wsspi.security.token.AttributeNameConstants.
WSCREDENTIAL_GROUPS);
// Get the groups from the String[]
ArrayList groups = new ArrayList();
if (groupList != null)
{
for (int i=0; i<groupList.length; i++)
{
System.out.println ("group[" + i + "] = " + groupList[i]);
groups.add(groupList[i]);
}
}
}
catch (Exception e)
{
throw new WSLoginFailedException (e.getMessage(), e);
}
}
}
public boolean commit() throws LoginException
{
// (For more information on what to do during commit, see
// Custom login module development for a system login configuration.)
}
private java.util.Map _sharedState = null;
private com.ibm.wsspi.security.token.AuthorizationToken defaultAuthzToken = null;
}
Changing the TokenFactory associated with the default AuthorizationToken
Related reference
Default PropagationToken
Custom login module development for a system login configuration
Security: Resources for learning