Example usage for javax.security.sasl SaslClient dispose

Introduction

In this page you can find the example usage for javax.security.sasl SaslClient dispose.

Prototype

public abstract void dispose() throws SaslException;

Source Link

Document

Disposes of any system resources or security-sensitive information the SaslClient might be using.

Usage

From source file:com.fluffypeople.managesieve.ManageSieveClient.java

/**
 * Authenticate against the remote server using SASL.
 *
 * The CallbackHandler should be setup appropriately, for example:
 * <pre>/*w  ww .  j  av a  2  s .  c om*/
 * <code>
 *
 * CallbackHandler cbh = new CallbackHandler() {
 *     public void handle(Callback[] clbcks) throws IOException,  UnsupportedCallbackException {
 *         for (Callback cb : clbcks) {
 *             if (cb instanceof NameCallback) {
 *                 NameCallback name = (NameCallback) cb;
 *                 name.setName("user");
 *             } else if (cb instanceof PasswordCallback) {
 *                 PasswordCallback passwd = (PasswordCallback) cb;
 *                 passwd.setPassword("secret".toCharArray());
 *             }
 *         }
 *     }
 * };
 * </code>
 * </pre>
 *
 * @param cbh CallbackHandler[] list of call backs that will be called by
 * the SASL code
 * @return ManageSieveResponse from the server, OK is authenticated, NO
 * means a problem
 * @throws SaslException
 * @throws IOException
 * @throws ParseException
 */
public synchronized ManageSieveResponse authenticate(final CallbackHandler cbh)
        throws SaslException, IOException, ParseException {

    SaslClient sc = Sasl.createSaslClient(cap.getSASLMethods(), null, "sieve", hostname, null, cbh);

    String mechanism = escapeString(sc.getMechanismName());
    if (sc.hasInitialResponse()) {
        byte[] ir = sc.evaluateChallenge(new byte[0]);
        String ready = new String(Base64.encodeBase64(ir));
        ready = encodeString(ready.trim());
        sendCommand("AUTHENTICATE", mechanism, ready);
    } else {
        sendCommand("AUTHENTICATE", mechanism);
    }

    int token;
    ManageSieveResponse resp = null;
    do {
        token = in.nextToken();
        if (token == DQUOTE) {
            // String - so more data for the auth sequence
            in.pushBack();
            String msg = parseString();
            byte[] response = sc.evaluateChallenge(msg.getBytes());
            sendLine(encodeString(new String(response)));
        } else if (token == StreamTokenizer.TT_WORD) {
            in.pushBack();
            resp = parseResponse();
            break;
        } else {
            throw new ParseException(
                    "Expecting DQUOTE/WORD, got " + tokenToString(token) + " at line " + in.lineno());
        }
    } while (!sc.isComplete());

    // Complete
    sc.dispose();
    return resp;
}

---