Overview  Package   Class  Use  Deprecated  Index
Home >> All >> org >> acegisecurity >> providers >> [ jaas overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

---

org.acegisecurity.providers.jaas
Class JaasAuthenticationProvider.InternalCallbackHandler  

java.lang.Object
  org.acegisecurity.providers.jaas.JaasAuthenticationProvider.InternalCallbackHandler

All Implemented Interfaces:

javax.security.auth.callback.CallbackHandler

Enclosing class:

JaasAuthenticationProvider

---

private class JaasAuthenticationProvider.InternalCallbackHandler

extends java.lang.Object

implements javax.security.auth.callback.CallbackHandler

Wrapper class for JAASAuthenticationCallbackHandlers

---

Field Summary
private  org.acegisecurity.Authentication	authentication

 

Constructor Summary

JaasAuthenticationProvider.InternalCallbackHandler(org.acegisecurity.Authentication authentication)

 

Method Summary
void	handle(javax.security.auth.callback.Callback[] callbacks)           Retrieve or display the information requested in the provided javax.security.auth.callback.Callbacks.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

authentication

private org.acegisecurity.Authentication authentication

Constructor Detail

JaasAuthenticationProvider.InternalCallbackHandler

public JaasAuthenticationProvider.InternalCallbackHandler(org.acegisecurity.Authentication authentication)

Method Detail

handle

public void handle(javax.security.auth.callback.Callback[] callbacks)
            throws java.io.IOException,
                   javax.security.auth.callback.UnsupportedCallbackException

Description copied from interface: javax.security.auth.callback.CallbackHandler

Retrieve or display the information requested in the provided javax.security.auth.callback.Callbacks.

The handle() method implementation checks the instance(s) of the javax.security.auth.callback.Callback object(s) passed in to retrieve or display the requested information. The following example is provided to help demonstrate what an handle() method implementation might look like. This example code is for guidance only. Many details, including proper error handling, are left out for simplicity.

public void handle(Callback[] callbacks)
throws IOException, UnsupportedCallbackException {
   for (int i = 0; i < callbacks.length; i++) {
      if (callbacks[i] instanceof TextOutputCallback) {
         // display the message according to the specified type
         TextOutputCallback toc = (TextOutputCallback)callbacks[i];
         switch (toc.getMessageType()) {
         case TextOutputCallback.INFORMATION:
            System.out.println(toc.getMessage());
            break;
         case TextOutputCallback.ERROR:
            System.out.println("ERROR: " + toc.getMessage());
            break;
         case TextOutputCallback.WARNING:
            System.out.println("WARNING: " + toc.getMessage());
            break;
         default:
            throw new IOException("Unsupported message type: "
                  + toc.getMessageType());
         }
      } else if (callbacks[i] instanceof NameCallback) {
         // prompt the user for a username
         NameCallback nc = (NameCallback)callbacks[i];
         // ignore the provided defaultName
         System.err.print(nc.getPrompt());
         System.err.flush();
         nc.setName((new BufferedReader(
               new InputStreamReader(System.in))).readLine());
      } else if (callbacks[i] instanceof PasswordCallback) {
         // prompt the user for sensitive information
         PasswordCallback pc = (PasswordCallback)callbacks[i];
         System.err.print(pc.getPrompt());
         System.err.flush();
         pc.setPassword(readPassword(System.in));
      } else {
         throw new UnsupportedCallbackException(
               callbacks[i], "Unrecognized Callback");
      }
   }
}

 // Reads user password from given input stream.
private char[] readPassword(InputStream in) throws IOException {
   // insert code to read a user password from the input stream
}
 

Specified by:

handle in interface javax.security.auth.callback.CallbackHandler

---

Overview  Package   Class  Use  Deprecated  Index
Home >> All >> org >> acegisecurity >> providers >> [ jaas overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

---