From 846fa167bc86cb64e221fca9650a3030ba08c74f Mon Sep 17 00:00:00 2001
From: Tinglyyy <Unverwunderbar@proton.me>
Date: Mon, 29 Sep 2025 18:22:08 +0200
Subject: [PATCH] Revert "Revert "- Maked classes final""

This reverts commit 742059ff67cee2bfc0cde49e0bf530943188e0df.
---
 .../protocol/ProtocolBridge.java              |  2 +-
 .../protocol/ProtocolSettings.java            |  2 +-
 .../UnsupportedProtocolException.java         |  2 +-
 .../protocol/listeners/ClientListener.java    |  2 +-
 .../protocol/listeners/DNSServerListener.java |  2 +-
 .../protocol/listeners/WebServerListener.java |  2 +-
 .../packets/v1_0_0/beta/AuthPacket.java       |  2 +-
 .../v1_0_0/beta/GetDestinationPacket.java     |  2 +-
 .../v1_0_0/beta/UnsupportedClassicPacket.java |  2 +-
 .../v1_0_0/beta/ValidateDomainPacket.java     |  2 +-
 .../v1_0_0/classic/Classic_DomainPacket.java  |  2 +-
 .../v1_0_0/classic/Classic_MessagePacket.java |  2 +-
 .../v1_0_0/classic/Classic_PingPacket.java    |  2 +-
 .../ConnectedToProtocolDNSServerEvent.java    |  2 +-
 .../protocol/side/web/ProtocolWebServer.java  | 29 ++++++++++++++++++-
 .../side/web/managers/AuthManager.java        |  4 +--
 .../side/web/managers/RuleManager.java        |  2 +-
 .../side/web/managers/SessionManager.java     |  9 +++---
 .../protocol/versions/v1_0_0/beta/Domain.java |  2 +-
 .../Classic_DomainPacketReceivedEvent.java    |  2 +-
 .../Classic_PingPacketReceivedEvent.java      |  2 +-
 .../classic/objects/Classic_Domain.java       |  2 +-
 .../classic/objects/Classic_LocalDomain.java  |  2 +-
 .../objects/Classic_RequestDomain.java        |  2 +-
 .../classic/site/Classic_WebsitesContent.java |  2 +-
 .../classic/utils/ClassicConverter.java       |  2 +-
 .../classic/utils/Classic_ClientListener.java |  2 +-
 27 files changed, 59 insertions(+), 31 deletions(-)

diff --git a/src/main/java/org/openautonomousconnection/protocol/ProtocolBridge.java b/src/main/java/org/openautonomousconnection/protocol/ProtocolBridge.java
index 80051a0..a06e567 100644
--- a/src/main/java/org/openautonomousconnection/protocol/ProtocolBridge.java
+++ b/src/main/java/org/openautonomousconnection/protocol/ProtocolBridge.java
@@ -30,7 +30,7 @@ import java.lang.reflect.InvocationTargetException;
  * The main bridge class for the protocol connection.
  * It manages the protocol settings, version, and side instances.
  */
-public class ProtocolBridge {
+public final class ProtocolBridge {
 
     /**
      * The singleton instance of the ProtocolBridge class
diff --git a/src/main/java/org/openautonomousconnection/protocol/ProtocolSettings.java b/src/main/java/org/openautonomousconnection/protocol/ProtocolSettings.java
index df259a0..d303642 100644
--- a/src/main/java/org/openautonomousconnection/protocol/ProtocolSettings.java
+++ b/src/main/java/org/openautonomousconnection/protocol/ProtocolSettings.java
@@ -7,7 +7,7 @@ import dev.unlegitdqrk.unlegitlibrary.utils.DefaultMethodsOverrider;
 /**
  * Settings for the protocol connection.
  */
-public class ProtocolSettings extends DefaultMethodsOverrider {
+public final class ProtocolSettings extends DefaultMethodsOverrider {
 
     /**
      * The host to connect to.
diff --git a/src/main/java/org/openautonomousconnection/protocol/exceptions/UnsupportedProtocolException.java b/src/main/java/org/openautonomousconnection/protocol/exceptions/UnsupportedProtocolException.java
index a3bf9b7..f0ad383 100644
--- a/src/main/java/org/openautonomousconnection/protocol/exceptions/UnsupportedProtocolException.java
+++ b/src/main/java/org/openautonomousconnection/protocol/exceptions/UnsupportedProtocolException.java
@@ -3,7 +3,7 @@ package org.openautonomousconnection.protocol.exceptions;
 /**
  * Exception thrown when an unsupported protocol is encountered.
  */
-public class UnsupportedProtocolException extends RuntimeException {
+public final class UnsupportedProtocolException extends RuntimeException {
 
     public UnsupportedProtocolException() {
         this("Selected protocol is not supported!");
diff --git a/src/main/java/org/openautonomousconnection/protocol/listeners/ClientListener.java b/src/main/java/org/openautonomousconnection/protocol/listeners/ClientListener.java
index d3ec9d0..b9c6299 100644
--- a/src/main/java/org/openautonomousconnection/protocol/listeners/ClientListener.java
+++ b/src/main/java/org/openautonomousconnection/protocol/listeners/ClientListener.java
@@ -15,7 +15,7 @@ import java.io.IOException;
  * Listener for client-side events such as connection and disconnection.
  */
 @ProtocolInfo(protocolSide = ProtocolVersion.ProtocolSide.CLIENT)
-public class ClientListener extends EventListener {
+public final class ClientListener extends EventListener {
 
     /**
      * Handles the event when a client connects.
diff --git a/src/main/java/org/openautonomousconnection/protocol/listeners/DNSServerListener.java b/src/main/java/org/openautonomousconnection/protocol/listeners/DNSServerListener.java
index e545665..e33143a 100644
--- a/src/main/java/org/openautonomousconnection/protocol/listeners/DNSServerListener.java
+++ b/src/main/java/org/openautonomousconnection/protocol/listeners/DNSServerListener.java
@@ -13,7 +13,7 @@ import org.openautonomousconnection.protocol.versions.ProtocolVersion;
  * Listener for DNS server connection events.
  */
 @ProtocolInfo(protocolSide = ProtocolVersion.ProtocolSide.DNS)
-public class DNSServerListener extends EventListener {
+public final class DNSServerListener extends EventListener {
 
     /**
      * Handles the event when a connection handler connects to the DNS server.
diff --git a/src/main/java/org/openautonomousconnection/protocol/listeners/WebServerListener.java b/src/main/java/org/openautonomousconnection/protocol/listeners/WebServerListener.java
index 2109252..616eb27 100644
--- a/src/main/java/org/openautonomousconnection/protocol/listeners/WebServerListener.java
+++ b/src/main/java/org/openautonomousconnection/protocol/listeners/WebServerListener.java
@@ -13,7 +13,7 @@ import org.openautonomousconnection.protocol.versions.ProtocolVersion;
  * Listener for web server connection events.
  */
 @ProtocolInfo(protocolSide = ProtocolVersion.ProtocolSide.WEB)
-public class WebServerListener extends EventListener {
+public final class WebServerListener extends EventListener {
 
     /**
      * Handles the event when a connection is established.
diff --git a/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/AuthPacket.java b/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/AuthPacket.java
index cb6e29f..5e459f0 100644
--- a/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/AuthPacket.java
+++ b/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/AuthPacket.java
@@ -18,7 +18,7 @@ import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 
-public class AuthPacket extends OACPacket {
+public final class AuthPacket extends OACPacket {
 
     File certificatesFolder = new File("certificates");
     File publicFolder = new File(certificatesFolder, "public");
diff --git a/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/GetDestinationPacket.java b/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/GetDestinationPacket.java
index 193a918..e87ba98 100644
--- a/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/GetDestinationPacket.java
+++ b/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/GetDestinationPacket.java
@@ -11,7 +11,7 @@ import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 
-public class GetDestinationPacket extends OACPacket {
+public final class GetDestinationPacket extends OACPacket {
     private Domain domain;
     private int clientID;
     private DNSResponseCode validationResponse;
diff --git a/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/UnsupportedClassicPacket.java b/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/UnsupportedClassicPacket.java
index ef27178..63e27bc 100644
--- a/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/UnsupportedClassicPacket.java
+++ b/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/UnsupportedClassicPacket.java
@@ -10,7 +10,7 @@ import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 
-public class UnsupportedClassicPacket extends OACPacket {
+public final class UnsupportedClassicPacket extends OACPacket {
     private Class<? extends OACPacket> unsupportedClassicPacket;
     private Object[] content;
 
diff --git a/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/ValidateDomainPacket.java b/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/ValidateDomainPacket.java
index 4a33a48..c6b6de5 100644
--- a/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/ValidateDomainPacket.java
+++ b/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/ValidateDomainPacket.java
@@ -10,7 +10,7 @@ import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 
-public class ValidateDomainPacket extends OACPacket {
+public final class ValidateDomainPacket extends OACPacket {
     private Domain domain;
     private int clientID;
 
diff --git a/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/classic/Classic_DomainPacket.java b/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/classic/Classic_DomainPacket.java
index 2ea61cf..f7ac1e7 100644
--- a/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/classic/Classic_DomainPacket.java
+++ b/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/classic/Classic_DomainPacket.java
@@ -15,7 +15,7 @@ import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.sql.SQLException;
 
-public class Classic_DomainPacket extends OACPacket {
+public final class Classic_DomainPacket extends OACPacket {
     private Classic_RequestDomain requestDomain;
     private Classic_Domain domain;
     private int clientID;
diff --git a/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/classic/Classic_MessagePacket.java b/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/classic/Classic_MessagePacket.java
index 0037eaf..262701e 100644
--- a/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/classic/Classic_MessagePacket.java
+++ b/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/classic/Classic_MessagePacket.java
@@ -10,7 +10,7 @@ import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 
-public class Classic_MessagePacket extends OACPacket {
+public final class Classic_MessagePacket extends OACPacket {
     private String message;
     private int clientID;
 
diff --git a/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/classic/Classic_PingPacket.java b/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/classic/Classic_PingPacket.java
index 6c8cfb4..37f61cb 100644
--- a/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/classic/Classic_PingPacket.java
+++ b/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/classic/Classic_PingPacket.java
@@ -16,7 +16,7 @@ import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.sql.SQLException;
 
-public class Classic_PingPacket extends OACPacket {
+public final class Classic_PingPacket extends OACPacket {
     private Classic_RequestDomain requestDomain;
     private Classic_Domain domain;
     private int clientID;
diff --git a/src/main/java/org/openautonomousconnection/protocol/side/client/events/ConnectedToProtocolDNSServerEvent.java b/src/main/java/org/openautonomousconnection/protocol/side/client/events/ConnectedToProtocolDNSServerEvent.java
index 2695cec..dc0c5ab 100644
--- a/src/main/java/org/openautonomousconnection/protocol/side/client/events/ConnectedToProtocolDNSServerEvent.java
+++ b/src/main/java/org/openautonomousconnection/protocol/side/client/events/ConnectedToProtocolDNSServerEvent.java
@@ -8,5 +8,5 @@ import org.openautonomousconnection.protocol.versions.ProtocolVersion;
  * Event triggered when a client successfully connects to a DNS protocol server.
  */
 @ProtocolInfo(protocolSide = ProtocolVersion.ProtocolSide.DNS)
-public class ConnectedToProtocolDNSServerEvent extends Event {
+public final class ConnectedToProtocolDNSServerEvent extends Event {
 }
diff --git a/src/main/java/org/openautonomousconnection/protocol/side/web/ProtocolWebServer.java b/src/main/java/org/openautonomousconnection/protocol/side/web/ProtocolWebServer.java
index bdf6a40..ec41a67 100644
--- a/src/main/java/org/openautonomousconnection/protocol/side/web/ProtocolWebServer.java
+++ b/src/main/java/org/openautonomousconnection/protocol/side/web/ProtocolWebServer.java
@@ -4,6 +4,7 @@ import dev.unlegitdqrk.unlegitlibrary.file.ConfigurationManager;
 import dev.unlegitdqrk.unlegitlibrary.file.FileUtils;
 import dev.unlegitdqrk.unlegitlibrary.network.system.server.NetworkServer;
 import dev.unlegitdqrk.unlegitlibrary.network.utils.NetworkUtils;
+import dev.unlegitdqrk.unlegitlibrary.string.RandomString;
 import lombok.Getter;
 import org.openautonomousconnection.protocol.ProtocolBridge;
 import org.openautonomousconnection.protocol.annotations.ProtocolInfo;
@@ -19,12 +20,13 @@ import java.io.IOException;
 import java.security.cert.CertificateException;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Random;
 
 /**
  * Represents the web server for the protocol.
  */
 @ProtocolInfo(protocolSide = ProtocolVersion.ProtocolSide.WEB)
-public class ProtocolWebServer {
+public final class ProtocolWebServer {
     /**
      * Folder for web content.
      */
@@ -76,6 +78,17 @@ public class ProtocolWebServer {
     @Getter
     private List<ConnectedWebClient> clients;
 
+    /**
+     * The configuration file for the web server.
+     */
+    private final File configFile;
+
+    /**
+     * A unique secret for session management.
+     */
+    @Getter
+    private String uniqueSessionString;
+
     /**
      * Initializes the web server with the given configuration, authentication, and rules files.
      * @param configFile The configuration file.
@@ -87,6 +100,9 @@ public class ProtocolWebServer {
         // Initialize the list of connected clients
         this.clients = new ArrayList<>();
 
+        // Store the configuration file
+        this.configFile = configFile;
+
         // Set up folder structure for certificates
         folderStructure = new ServerCertificateFolderStructure();
 
@@ -140,6 +156,8 @@ public class ProtocolWebServer {
         }
 
         // Load authentication and rules
+        uniqueSessionString = AuthManager.sha256(new RandomString(new Random(System.currentTimeMillis()).nextInt(10, 20)).nextString());
+
         AuthManager.loadAuthFile(authFile);
         RuleManager.loadRules(rulesFile);
 
@@ -261,6 +279,15 @@ public class ProtocolWebServer {
         if (!found) throw new CertificateException("Missing " + prefix + NetworkUtils.getPublicIPAddress() + extension);
     }
 
+    /**
+     * Retrieves the configuration manager for the web server.
+     * @return The configuration manager.
+     * @throws IOException If an I/O error occurs while loading or saving the configuration.
+     */
+    public final ConfigurationManager getConfigurationManager() throws IOException {
+        return getConfigurationManager(configFile);
+    }
+
     /**
      * Loads and initializes the configuration manager with default settings if necessary.
      * @param configFile The configuration file to load.
diff --git a/src/main/java/org/openautonomousconnection/protocol/side/web/managers/AuthManager.java b/src/main/java/org/openautonomousconnection/protocol/side/web/managers/AuthManager.java
index 0cc228a..d9be7cb 100644
--- a/src/main/java/org/openautonomousconnection/protocol/side/web/managers/AuthManager.java
+++ b/src/main/java/org/openautonomousconnection/protocol/side/web/managers/AuthManager.java
@@ -16,7 +16,7 @@ import java.util.Map;
  * Loads user credentials from a file and verifies login attempts.
  */
 @ProtocolInfo(protocolSide = ProtocolVersion.ProtocolSide.WEB)
-public class AuthManager {
+public final class AuthManager {
 
     /**
      * Map of usernames to their SHA-256 hashed passwords
@@ -67,7 +67,7 @@ public class AuthManager {
      * @param input The input string to hash.
      * @return The hexadecimal representation of the SHA-256 hash.
      */
-    private static String sha256(String input) {
+    public static String sha256(String input) {
         try {
             MessageDigest md = MessageDigest.getInstance("SHA-256");
             byte[] digest = md.digest(input.getBytes(StandardCharsets.UTF_8));
diff --git a/src/main/java/org/openautonomousconnection/protocol/side/web/managers/RuleManager.java b/src/main/java/org/openautonomousconnection/protocol/side/web/managers/RuleManager.java
index 0d02392..67f013e 100644
--- a/src/main/java/org/openautonomousconnection/protocol/side/web/managers/RuleManager.java
+++ b/src/main/java/org/openautonomousconnection/protocol/side/web/managers/RuleManager.java
@@ -15,7 +15,7 @@ import java.util.Map;
  * Loads allow, deny, and auth rules from a JSON file and provides methods to check access.
  */
 @ProtocolInfo(protocolSide = ProtocolVersion.ProtocolSide.WEB)
-public class RuleManager {
+public final class RuleManager {
     /**
      * Lists of path patterns for allow, deny, and auth rules
      */
diff --git a/src/main/java/org/openautonomousconnection/protocol/side/web/managers/SessionManager.java b/src/main/java/org/openautonomousconnection/protocol/side/web/managers/SessionManager.java
index 6a8b936..c3acb25 100644
--- a/src/main/java/org/openautonomousconnection/protocol/side/web/managers/SessionManager.java
+++ b/src/main/java/org/openautonomousconnection/protocol/side/web/managers/SessionManager.java
@@ -1,6 +1,7 @@
 package org.openautonomousconnection.protocol.side.web.managers;
 
 import lombok.Getter;
+import org.openautonomousconnection.protocol.ProtocolBridge;
 import org.openautonomousconnection.protocol.annotations.ProtocolInfo;
 import org.openautonomousconnection.protocol.versions.ProtocolVersion;
 
@@ -15,7 +16,7 @@ import java.util.concurrent.ConcurrentHashMap;
  * Provides methods to create, validate, and invalidate sessions.
  */
 @ProtocolInfo(protocolSide = ProtocolVersion.ProtocolSide.WEB)
-public class SessionManager {
+public final class SessionManager {
 
     /**
      * Map of session IDs to Session objects.
@@ -41,7 +42,7 @@ public class SessionManager {
         secureRandom.nextBytes(bytes);
 
         // Encode the bytes to a URL-safe Base64 string
-        String sessionId = Base64.getUrlEncoder().withoutPadding().encodeToString(bytes);
+        String sessionId = Base64.getUrlEncoder().withoutPadding().encodeToString(bytes) + ProtocolBridge.getInstance().getProtocolWebServer().getUniqueSessionString();
 
         // Create and store the new session
         sessions.put(sessionId, new Session(login, ip, userAgent));
@@ -121,7 +122,7 @@ public class SessionManager {
             this.login = login;
             this.ip = ip;
             this.userAgent = userAgent;
-            this.expiresAt = System.currentTimeMillis() + Main.getConfigurationManager().getInt("sessionexpireminutes") * 60 * 1000;
+            this.expiresAt = System.currentTimeMillis() + (long) ProtocolBridge.getInstance().getProtocolWebServer().getConfigurationManager().getInt("sessionexpireminutes") * 60 * 1000;
         }
 
         /**
@@ -147,7 +148,7 @@ public class SessionManager {
          * @throws IOException If an I/O error occurs.
          */
         void refresh() throws IOException {
-            this.expiresAt = System.currentTimeMillis() + Main.getConfigurationManager().getInt("sessionexpireminutes") * 60 * 1000;
+            this.expiresAt = System.currentTimeMillis() + (long) ProtocolBridge.getInstance().getProtocolWebServer().getConfigurationManager().getInt("sessionexpireminutes") * 60 * 1000;
         }
     }
 }
diff --git a/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/beta/Domain.java b/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/beta/Domain.java
index ee0c550..5322a55 100644
--- a/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/beta/Domain.java
+++ b/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/beta/Domain.java
@@ -12,7 +12,7 @@ import java.util.List;
 /**
  * Class representing a domain with its components such as subname, name, top-level name, path, query, fragment, and protocol.
  */
-public class Domain implements Serializable {
+public final class Domain implements Serializable {
     /**
      * The subname of the domain (e.g., "sub" in "sub.example.com").
      */
diff --git a/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/events/Classic_DomainPacketReceivedEvent.java b/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/events/Classic_DomainPacketReceivedEvent.java
index a237687..bcd18db 100644
--- a/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/events/Classic_DomainPacketReceivedEvent.java
+++ b/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/events/Classic_DomainPacketReceivedEvent.java
@@ -14,7 +14,7 @@ import org.openautonomousconnection.protocol.versions.v1_0_0.classic.objects.Cla
  * @see org.openautonomousconnection.protocol.versions.v1_0_0.classic.handlers.ClassicHandlerWebServer
  */
 @Deprecated(forRemoval = false, since = "1.0.0-BETA.3")
-public class Classic_DomainPacketReceivedEvent extends Event {
+public final class Classic_DomainPacketReceivedEvent extends Event {
 
     public final Classic_ProtocolVersion protocolVersion;
     public final Classic_Domain domain;
diff --git a/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/events/Classic_PingPacketReceivedEvent.java b/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/events/Classic_PingPacketReceivedEvent.java
index 56af978..809c6f4 100644
--- a/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/events/Classic_PingPacketReceivedEvent.java
+++ b/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/events/Classic_PingPacketReceivedEvent.java
@@ -13,7 +13,7 @@ import org.openautonomousconnection.protocol.versions.v1_0_0.classic.objects.Cla
  * @see org.openautonomousconnection.protocol.versions.v1_0_0.classic.handlers.ClassicHandlerWebServer
  */
 @Deprecated(forRemoval = false, since = "1.0.0-BETA.3")
-public class Classic_PingPacketReceivedEvent extends Event {
+public final class Classic_PingPacketReceivedEvent extends Event {
     public final Classic_ProtocolVersion protocolVersion;
     public final Classic_Domain domain;
     public final Classic_RequestDomain requestDomain;
diff --git a/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/objects/Classic_Domain.java b/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/objects/Classic_Domain.java
index acfe6dd..5ff3ad8 100644
--- a/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/objects/Classic_Domain.java
+++ b/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/objects/Classic_Domain.java
@@ -11,7 +11,7 @@ import java.io.Serializable;
  * This class is deprecated and users are encouraged to use the Domain class instead.
  */
 @Deprecated(forRemoval = false, since = "1.0.0-BETA.3")
-public class Classic_Domain implements Serializable {
+public final class Classic_Domain implements Serializable {
 
     /**
      * The name of the domain (e.g., "example" in "example.com").
diff --git a/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/objects/Classic_LocalDomain.java b/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/objects/Classic_LocalDomain.java
index 671b3cd..bdf6bbe 100644
--- a/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/objects/Classic_LocalDomain.java
+++ b/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/objects/Classic_LocalDomain.java
@@ -5,7 +5,7 @@ package org.openautonomousconnection.protocol.versions.v1_0_0.classic.objects;
  * This class extends Classic_Domain and is used for local domain representation.
  */
 @Deprecated(forRemoval = false, since = "1.0.0-BETA.3")
-public class Classic_LocalDomain extends Classic_Domain {
+public final class Classic_LocalDomain extends Classic_Domain {
     public Classic_LocalDomain(String name, String endName, String path) {
         super(name, endName, null, path);
     }
diff --git a/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/objects/Classic_RequestDomain.java b/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/objects/Classic_RequestDomain.java
index b6d3fb3..c6d184b 100644
--- a/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/objects/Classic_RequestDomain.java
+++ b/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/objects/Classic_RequestDomain.java
@@ -7,7 +7,7 @@ import java.io.Serializable;
  * This class extends Classic_Domain and is used for requesting domain information.
  */
 @Deprecated(forRemoval = false, since = "1.0.0-BETA.3")
-public class Classic_RequestDomain extends Classic_Domain implements Serializable {
+public final class Classic_RequestDomain extends Classic_Domain implements Serializable {
 
     public Classic_RequestDomain(String name, String topLevelDomain, String path) {
         super(name, topLevelDomain, null, path);
diff --git a/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/site/Classic_WebsitesContent.java b/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/site/Classic_WebsitesContent.java
index d83b234..70941c0 100644
--- a/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/site/Classic_WebsitesContent.java
+++ b/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/site/Classic_WebsitesContent.java
@@ -6,7 +6,7 @@ import dev.unlegitdqrk.unlegitlibrary.utils.DefaultMethodsOverrider;
  * This class contains predefined HTML content for various website responses in the Classic protocol.
  */
 @Deprecated(forRemoval = false, since = "1.0.0-BETA.3")
-public class Classic_WebsitesContent extends DefaultMethodsOverrider {
+public final class Classic_WebsitesContent extends DefaultMethodsOverrider {
 
     public static final String DOMAIN_NOT_FOUND = """
             <html>
diff --git a/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/utils/ClassicConverter.java b/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/utils/ClassicConverter.java
index b5264b9..71e4bb0 100644
--- a/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/utils/ClassicConverter.java
+++ b/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/utils/ClassicConverter.java
@@ -7,7 +7,7 @@ import org.openautonomousconnection.protocol.versions.v1_0_0.classic.objects.Cla
 /**
  * Utility class for converting between Classic protocol objects and new protocol objects.
  */
-public class ClassicConverter {
+public final class ClassicConverter {
 
     /**
      * Converts a Classic_Domain object to a Domain object.
diff --git a/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/utils/Classic_ClientListener.java b/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/utils/Classic_ClientListener.java
index dfd47c5..f370ea4 100644
--- a/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/utils/Classic_ClientListener.java
+++ b/src/main/java/org/openautonomousconnection/protocol/versions/v1_0_0/classic/utils/Classic_ClientListener.java
@@ -22,7 +22,7 @@ import java.net.URL;
  * and web content retrieval.
  */
 @Deprecated(forRemoval = false, since = "1.0.0-BETA.3")
-public class Classic_ClientListener extends EventListener {
+public final class Classic_ClientListener extends EventListener {
 
     /**
      * Handles the event when a domain packet is received.