Add experimental offline mode support - closes issue #121

api/src/main/java/net/md_5/bungee/api/config/ConfigurationAdapter.java

@@ -34,6 +34,15 @@ public interface ConfigurationAdapter
      */
     public String getString(String path, String def);
 
+    /**
+     * Gets a boolean from the specified path.
+     *
+     * @param path the path to retrieve the boolean form.
+     * @param def the default value
+     * @return the retrieved boolean
+     */
+    public boolean getBoolean(String path, boolean def);
+
     /**
      * Get the configuration all servers which may be accessible via the proxy.
      *

proxy/src/main/java/net/md_5/bungee/EncryptionUtil.java

@@ -51,7 +51,7 @@ public class EncryptionUtil
             keys = KeyPairGenerator.getInstance( "RSA" ).generateKeyPair();
         }
 
-        String hash = Long.toString( random.nextLong(), 16 );
+        String hash = ( BungeeCord.getInstance().config.isOnlineMode() ) ? Long.toString( random.nextLong(), 16 ) : "-";
         byte[] pubKey = keys.getPublic().getEncoded();
         byte[] verify = new byte[ 4 ];
         random.nextBytes( verify );

proxy/src/main/java/net/md_5/bungee/InitialHandler.java

@@ -109,7 +109,7 @@ public class InitialHandler extends PacketHandler implements Runnable, PendingCo
         Preconditions.checkState( thisState == State.ENCRYPT, "Not expecting ENCRYPT" );
 
         SecretKey shared = EncryptionUtil.getSecret( encryptResponse, request );
-        if ( !EncryptionUtil.isAuthenticated( handshake.username, request.serverId, shared ) )
+        if ( BungeeCord.getInstance().config.isOnlineMode() && !EncryptionUtil.isAuthenticated( handshake.username, request.serverId, shared ) )
         {
             throw new KickException( "Not authenticated with minecraft.net" );
         }

proxy/src/main/java/net/md_5/bungee/config/Configuration.java

@@ -44,6 +44,10 @@ public class Configuration
      * Set of all servers.
      */
     private Map<String, ServerInfo> servers;
+    /**
+     * Should we check minecraft.net auth.
+     */
+    private boolean onlineMode = true;
 
     public void load()
     {
@@ -52,6 +56,7 @@ public class Configuration
 
         timeout = adapter.getInt( "timeout", timeout );
         uuid = adapter.getString( "stats", uuid );
+        onlineMode = adapter.getBoolean( "online_mode", onlineMode );
 
         DefaultTabList tab = DefaultTabList.valueOf( adapter.getString( "tab_list", "GLOBAL_PING" ) );
         if ( tab == null )

proxy/src/main/java/net/md_5/bungee/config/YamlConfig.java

@@ -127,6 +127,12 @@ public class YamlConfig implements ConfigurationAdapter
         return get( path, def );
     }
 
+    @Override
+    public boolean getBoolean(String path, boolean def)
+    {
+        return get( path, def );
+    }
+
     @Override
     @SuppressWarnings("unchecked")
     public Map<String, ServerInfo> getServers()