// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
package com.cloud.consoleproxy.vnc.security;

import com.cloud.consoleproxy.vnc.RfbConstants;
import com.cloud.consoleproxy.vnc.network.NioSocketHandler;
import com.cloud.utils.exception.CloudRuntimeException;

import java.io.IOException;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public interface VncSecurity {

    static List<VncSecurity> getSecurityStack(int securityType, String vmPassword, String host, int port) {
        switch (securityType) {
            case RfbConstants.NO_AUTH:
                return Collections.singletonList(new NoneVncSecurity());
            case RfbConstants.VNC_AUTH:
                return Collections.singletonList(new VncAuthSecurity(vmPassword));
            // Do not add VEncrypt type = 19 but its supported subtypes
            case RfbConstants.V_ENCRYPT_X509_VNC:
                return Arrays.asList(new VncTLSSecurity(host, port), new VncAuthSecurity(vmPassword));
            default:
                throw new CloudRuntimeException("Unsupported security type " + securityType);
        }
    }

    void process(NioSocketHandler socketHandler) throws IOException;
}
