public boolean login()

in hawtio-system/src/main/java/io/hawt/web/tomcat/TomcatUserDatabaseLoginContext.java [131:172]
38 lines of code
6 McCabe index (conditional complexity)

    public boolean login() throws LoginException {
        // get username and password
        Callback[] callbacks = new Callback[2];
        callbacks[0] = new NameCallback("username");
        callbacks[1] = new PasswordCallback("password", false);

        try {
            callbackHandler.handle(callbacks);
            String username = ((NameCallback) callbacks[0]).getName();
            char[] tmpPassword = ((PasswordCallback) callbacks[1]).getPassword();
            String password = new String(tmpPassword);
            ((PasswordCallback) callbacks[1]).clearPassword();

            LOG.debug("Getting user details for username {}", username);
            String[] user = getUserPasswordRole(username);
            if (user != null) {
                if (! passwordsMatch(new PasswordPair(user[1], password))) {
                    LOG.trace("Login denied due password did not match");
                    return false;
                }
                String[] roles = user[2].split(",");
                for (String role : roles) {
                    LOG.trace("User {} has role {}", username, role);
                    subject.getPrincipals().add(new TomcatPrincipal(username, role));
                }
            } else {
                LOG.trace("Login denied due user not found");
                return false;
            }
        } catch (UnsupportedCallbackException uce) {
            LoginException le = new LoginException("Error: " + uce.getCallback().toString()
                + " not available to gather authentication information from the user");
            le.initCause(uce);
            throw le;
        } catch (Exception ioe) {
            LoginException le = new LoginException(ioe.toString());
            le.initCause(ioe);
            throw le;
        }

        return true;
    }