public Subject authenticate()

in management/src/main/java/org/apache/servicemix/management/JaasAuthenticator.java [43:71]

• 29 lines of code
• 8 McCabe index (conditional complexity)

    public Subject authenticate(Object credentials) throws SecurityException {
        if (!(credentials instanceof String[])) {
            throw new IllegalArgumentException("Expected String[2], got "
                            + (credentials != null ? credentials.getClass().getName() : null));
        }
        final String[] params = (String[]) credentials;
        if (params.length != 2) {
            throw new IllegalArgumentException("Expected String[2] but length was " + params.length);
        }
        try {
            LoginContext loginContext = new LoginContext(realm, new CallbackHandler() {
                public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
                    for (int i = 0; i < callbacks.length; i++) {
                        if (callbacks[i] instanceof NameCallback) {
                            ((NameCallback) callbacks[i]).setName(params[0]);
                        } else if (callbacks[i] instanceof PasswordCallback) {
                            ((PasswordCallback) callbacks[i]).setPassword((params[1].toCharArray()));
                        } else {
                            throw new UnsupportedCallbackException(callbacks[i]);
                        }
                    }
                }
            });
            loginContext.login();
            return loginContext.getSubject();
        } catch (LoginException e) {
            throw new SecurityException("Authentication failed", e);
        }
    }