public User authenticate()

in core/src/main/java/org/apache/ftpserver/usermanager/impl/PropertiesUserManager.java [465:505]

33 lines of code
8 McCabe index (conditional complexity)


    public User authenticate(Authentication authentication)
            throws AuthenticationFailedException {
        if (authentication instanceof UsernamePasswordAuthentication) {
            UsernamePasswordAuthentication upauth = (UsernamePasswordAuthentication) authentication;

            String user = upauth.getUsername();
            String password = upauth.getPassword();

            if (user == null) {
                throw new AuthenticationFailedException("Authentication failed");
            }

            if (password == null) {
                password = "";
            }

            String storedPassword = userDataProp.getProperty(PREFIX + user
                    + '.' + ATTR_PASSWORD);

            if (storedPassword == null) {
                // user does not exist
                throw new AuthenticationFailedException("Authentication failed");
            }

            if (getPasswordEncryptor().matches(password, storedPassword)) {
                return getUserByName(user);
            } else {
                throw new AuthenticationFailedException("Authentication failed");
            }

        } else if (authentication instanceof AnonymousAuthentication) {
            if (doesExist("anonymous")) {
                return getUserByName("anonymous");
            } else {
                throw new AuthenticationFailedException("Authentication failed");
            }
        } else {
            throw new IllegalArgumentException(
                    "Authentication not supported by this user manager");
        }
    }