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Scattersphere Core library, used to run the main server.

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package net.scattersphere.util;

import net.scattersphere.data.DataSerializer;
import net.scattersphere.data.message.ServerAuthResponseMessage;
import net.scattersphere.registry.AuthRegistry;
import net.scattersphere.server.ClientConnection;
import org.vertx.java.core.buffer.Buffer;

/**
 * This class handles authentication for the specified {@link ClientConnection}.
 *
 * Created by kenji on 3/13/15.
 */
public class AuthenticationHelper {

    /**
     * Indicates whether or not the server requires authentication.
     *
     * @return {@code true} if authentication is required, {@code false} otherwise.
     */
    public static boolean requiresAuthentication() {
        return AuthRegistry.instance().size() > 0;
    }

    /**
     * Sends a response to the client indicating that authentication is required.
     *
     * @param client {@link ClientConnection} connection object.
     */
    public static void sendAuthRequired(ClientConnection client) {
        ServerAuthResponseMessage sarMessage = new ServerAuthResponseMessage(true, false);
        Buffer buffer = new Buffer(DataSerializer.packetize(sarMessage.toByteArray()));

        client.getEndpoint().write(buffer);
    }

    /**
     * Sends a message back to the client indicating successful authentication.
     *
     * @param client {@link ClientConnection} object.
     */
    public static void sendAuthSuccessful(ClientConnection client) {
        ServerAuthResponseMessage sarMessage = new ServerAuthResponseMessage(true, true);
        Buffer buffer = new Buffer(DataSerializer.packetize(sarMessage.toByteArray()));

        client.setAuthenticated(true);
        client.getEndpoint().write(buffer);
    }

}