Add a way to kick players before a server stop

src/main/java/fr/xephi/authme/AuthMe.java

@@ -27,6 +27,7 @@ import fr.xephi.authme.listener.AuthMePlayerListener;
 import fr.xephi.authme.listener.AuthMePlayerListener16;
 import fr.xephi.authme.listener.AuthMePlayerListener18;
 import fr.xephi.authme.listener.AuthMeServerListener;
+import fr.xephi.authme.listener.AuthMeServerStop;
 import fr.xephi.authme.modules.ModuleManager;
 import fr.xephi.authme.output.ConsoleFilter;
 import fr.xephi.authme.output.Log4JFilter;
@@ -288,6 +289,13 @@ public class AuthMe extends JavaPlugin {
         // Show settings warnings
         showSettingsWarnings();
 
+        // Register a server shutdown hook
+        try {
+            Runtime.getRuntime().addShutdownHook(new AuthMeServerStop(this));
+        } catch (Exception e){
+        	e.printStackTrace();
+        }
+
         // Sponsor messages
         ConsoleLogger.info("AuthMe hooks perfectly with the VeryGames server hosting!");
         ConsoleLogger.info("Development builds are available on our jenkins, thanks to f14stelt.");

src/main/java/fr/xephi/authme/listener/AuthMeServerStop.java

@@ -0,0 +1,23 @@
+package fr.xephi.authme.listener;
+
+import org.bukkit.entity.Player;
+
+import fr.xephi.authme.AuthMe;
+import fr.xephi.authme.settings.Settings;
+
+public class AuthMeServerStop extends Thread {
+
+	private AuthMe plugin;
+
+	public AuthMeServerStop(AuthMe plugin)
+	{
+		this.plugin = plugin;
+	}
+
+    public void run() {
+    	// TODO: add a MessageKey
+    	if (Settings.kickPlayersBeforeStoping)
+    		for (Player p : plugin.getServer().getOnlinePlayers())
+    			p.kickPlayer("Server is restarting");
+    }
+}

src/main/java/fr/xephi/authme/settings/Settings.java

@@ -79,6 +79,7 @@ public final class Settings {
         enableProtection, enableAntiBot, recallEmail, useWelcomeMessage,
         broadcastWelcomeMessage, forceRegKick, forceRegLogin,
         checkVeryGames, delayJoinLeaveMessages, noTeleport, applyBlindEffect,
+        kickPlayersBeforeStoping,
         customAttributes, generateImage, isRemoveSpeedEnabled, preventOtherCase;
     public static String helpHeader, getNickRegex, getUnloggedinGroup, getMySQLHost,
         getMySQLPort, getMySQLUsername, getMySQLPassword, getMySQLDatabase,
@@ -300,6 +301,7 @@ public final class Settings {
         customAttributes = configFile.getBoolean("Hooks.customAttributes");
         generateImage = configFile.getBoolean("Email.generateImage", false);
         preventOtherCase = configFile.getBoolean("settings.preventOtherCase", false);
+        kickPlayersBeforeStoping = configFile.getBoolean("Security.stop.kickPlayersBeforeStoping", true);
 
         // Load the welcome message
         getWelcomeMessage();
@@ -727,6 +729,11 @@ public final class Settings {
             ConsoleLogger.showError("Remove Email.mailText from config, we now use the email.html file");
         }
 
+        if (!contains("Security.stop.kickPlayersBeforeStoping")) {
+        	set("Security.stop.kickPlayersBeforeStoping", true);
+        	changed = true;
+        }
+
         if (changes) {
             plugin.getLogger().warning("Merged new Config Options - I'm not an error, please don't report me");
             plugin.getLogger().warning("Please check your config.yml file for new configs!");

src/main/resources/config.yml

@@ -316,6 +316,10 @@ Security:
         maxLoginTry: 5
         # Captcha length
         captchaLength: 5
+    stop:
+        # Kick players before stoping the server, that allow us to save position of players, and all needed
+        # informations correctly without any corruption.
+        kickPlayersBeforeStoping: true
 Converter:
     Rakamak:
         # Rakamak file name