- Correct command concurrency issues on Bukkit servers

- Removed dynamic class loading of libraries to fix antivirus flags of the plugin.
This commit is contained in:
2024-03-15 11:06:49 -04:00
parent b2fcc4ff26
commit 3f5ab39877
26 changed files with 224 additions and 1892 deletions
@@ -15,7 +15,6 @@ import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.event.player.PlayerLoginEvent;
import org.bukkit.event.player.PlayerQuitEvent;
import org.bukkit.scheduler.BukkitRunnable;
import java.net.InetAddress;
import java.net.InetSocketAddress;
@@ -56,12 +55,11 @@ public class BukkitListener extends VPNExecutor implements Listener {
.ifPresent(player -> {
AntiVPN.getInstance().getDatabase().alertsState(player.getUuid(), enabled -> {
if(enabled) {
AntiVPN.getInstance().getExecutor().log("Enabled");
player.setAlertsEnabled(true);
player.sendMessage(AntiVPN.getInstance().getMessageHandler()
.getString("command-alerts-toggled")
.getFormattedMessage(new VpnString.Var<>("state", true)));
} else AntiVPN.getInstance().getExecutor().log("Not enabled");
}
});
});
}
@@ -76,7 +74,6 @@ public class BukkitListener extends VPNExecutor implements Listener {
|| AntiVPN.getInstance().getVpnConfig().getPrefixWhitelists().stream()
.anyMatch(prefix -> event.getPlayer().getName().startsWith(prefix))) return;
if(responseCache.asMap().containsKey(event.getPlayer().getUniqueId())) {
VPNResponse cached = responseCache.getIfPresent(event.getPlayer().getUniqueId());
@@ -93,113 +90,117 @@ public class BukkitListener extends VPNExecutor implements Listener {
AntiVPN.getInstance().getVpnConfig().cachedResults(), result -> {
if(result.isSuccess()) {
//We need to run on main thread or kicking and running commands will cause errors
new BukkitRunnable() {
public void run() {
//If the player is whitelisted, we don't want to kick them
if(AntiVPN.getInstance().getExecutor().isWhitelisted(event.getPlayer().getUniqueId())) {
log("UUID is whitelisted: %s",
event.getPlayer().getUniqueId().toString());
return;
}
{
//If the IP is whitelisted, we don't want to kick them
InetSocketAddress address = event.getPlayer().getAddress();
if (address != null){
InetAddress address1 = address.getAddress();
if (address1 != null && AntiVPN.getInstance().getExecutor()
.isWhitelisted(address1.getHostAddress())) {
log("IP is whitelisted: %s",
address1.getHostAddress());
return;
}
}
}
//If the player is whitelisted, we don't want to kick them
if(AntiVPN.getInstance().getExecutor().isWhitelisted(event.getPlayer().getUniqueId())) {
log("UUID is whitelisted: %s",
event.getPlayer().getUniqueId().toString());
return;
}
// If the countryList() size is zero, no need to check.
// Running country check first
if(!AntiVPN.getInstance().getVpnConfig().countryList().isEmpty()
// This bit of code will decide whether or not to kick the player
// If it contains the code and it is set to whitelist, it will not kick as they are equal
// and vise versa. However, if the contains does not match the state, it will kick.
&& AntiVPN.getInstance().getVpnConfig().countryList()
.contains(result.getCountryCode())
!= AntiVPN.getInstance().getVpnConfig().whitelistCountries()) {
final String kickReason = AntiVPN.getInstance().getVpnConfig()
.countryVanillaKickReason();
// Start "online" fix
// In case the response was so fast from API the player wouldn't be "online".
event.setResult(PlayerLoginEvent.Result.KICK_BANNED);
event.setKickMessage(ChatColor
.translateAlternateColorCodes('&',
kickReason
.replace("%player%", event.getPlayer().getName())
.replace("%country%", result.getCountryName())
.replace("%code%", result.getCountryCode())));
// End "online" fix
//Using our built in kicking system if no commands are configured
if(AntiVPN.getInstance().getVpnConfig().countryKickCommands().isEmpty()) {
// Kicking our player
event.getPlayer().kickPlayer(ChatColor
.translateAlternateColorCodes('&',
kickReason
.replace("%player%", event.getPlayer().getName())
.replace("%country%", result.getCountryName())
.replace("%code%", result.getCountryCode())));
} else {
for (String cmd : AntiVPN.getInstance().getVpnConfig().countryKickCommands()) {
final String formattedCommand = ChatColor.translateAlternateColorCodes('&',
cmd.replace("%player%", event.getPlayer().getName())
.replace("%country%", result.getCountryName())
.replace("%code%", result.getCountryCode()));
// Runs our command from console
Bukkit.dispatchCommand(Bukkit.getConsoleSender(), formattedCommand);
}
}
} else if(result.isProxy()) {
// Start "online" fix
// In case the response was so fast from API the player wouldn't be "online".
event.setResult(PlayerLoginEvent.Result.KICK_BANNED);
event.setKickMessage(ChatColor
.translateAlternateColorCodes('&',
AntiVPN.getInstance().getVpnConfig().getKickString()
.replace("%player%", event.getPlayer().getName())
.replace("%country%", result.getCountryName())
.replace("%code%", result.getCountryCode())));
// End "online" fix
if(AntiVPN.getInstance().getVpnConfig().kickPlayersOnDetect())
player.kickPlayer(org.bukkit.ChatColor.translateAlternateColorCodes('&',
AntiVPN.getInstance().getVpnConfig().getKickString()));
log(Level.INFO, event.getPlayer().getName()
+ " joined on a VPN/Proxy (" + result.getMethod() + ")");
//Ensuring the user wishes to alert to staff
if(AntiVPN.getInstance().getVpnConfig().alertToStaff())
AntiVPN.getInstance().getPlayerExecutor().getOnlinePlayers().stream()
.filter(APIPlayer::isAlertsEnabled)
.forEach(pl -> pl.sendMessage(AntiVPN.getInstance().getVpnConfig().alertMessage()
.replace("%player%", event.getPlayer().getName())
.replace("%reason%", result.getMethod())
.replace("%country%", result.getCountryName())
.replace("%city%", result.getCity())));
//In case the user wants to run their own commands instead of using the built in kicking
if(AntiVPN.getInstance().getVpnConfig().runCommands()) {
for (String command : AntiVPN.getInstance().getVpnConfig().commands()) {
Bukkit.dispatchCommand(Bukkit.getConsoleSender(),
ChatColor.translateAlternateColorCodes('&',
command.replace("%player%",
event.getPlayer().getName())));
}
}
AntiVPN.getInstance().detections++;
}
//If the IP is whitelisted, we don't want to kick them
InetSocketAddress address = event.getPlayer().getAddress();
if (address != null){
InetAddress address1 = address.getAddress();
if (address1 != null && AntiVPN.getInstance().getExecutor()
.isWhitelisted(address1.getHostAddress())) {
log("IP is whitelisted: %s",
address1.getHostAddress());
return;
}
}.runTask(BukkitPlugin.pluginInstance);
}
// If the countryList() size is zero, no need to check.
// Running country check first
if(!AntiVPN.getInstance().getVpnConfig().countryList().isEmpty()
// This bit of code will decide whether or not to kick the player
// If it contains the code and it is set to whitelist, it will not kick as they are equal
// and vise versa. However, if the contains does not match the state, it will kick.
&& AntiVPN.getInstance().getVpnConfig().countryList()
.contains(result.getCountryCode())
!= AntiVPN.getInstance().getVpnConfig().whitelistCountries()) {
final String kickReason = AntiVPN.getInstance().getVpnConfig()
.countryVanillaKickReason();
// Start "online" fix
// In case the response was so fast from API the player wouldn't be "online".
event.setResult(PlayerLoginEvent.Result.KICK_BANNED);
event.setKickMessage(ChatColor
.translateAlternateColorCodes('&',
kickReason
.replace("%player%", event.getPlayer().getName())
.replace("%country%", result.getCountryName())
.replace("%code%", result.getCountryCode())));
// End "online" fix
//Using our built in kicking system if no commands are configured
if(AntiVPN.getInstance().getVpnConfig().countryKickCommands().isEmpty()) {
// Kicking our player
event.getPlayer().kickPlayer(ChatColor
.translateAlternateColorCodes('&',
kickReason
.replace("%player%", event.getPlayer().getName())
.replace("%country%", result.getCountryName())
.replace("%code%", result.getCountryCode())));
} else {
final String playerName = event.getPlayer().getName();
BukkitPlugin.pluginInstance.getPlayerCommandRunner()
.addAction(event.getPlayer().getUniqueId(), () -> {
for (String cmd : AntiVPN.getInstance().getVpnConfig().countryKickCommands()) {
final String formattedCommand = ChatColor.translateAlternateColorCodes('&',
cmd.replace("%player%", playerName)
.replace("%country%", result.getCountryName())
.replace("%code%", result.getCountryCode()));
// Runs our command from console
Bukkit.dispatchCommand(Bukkit.getConsoleSender(), formattedCommand);
}
});
}
} else if(result.isProxy()) {
// Start "online" fix
// In case the response was so fast from API the player wouldn't be "online".
event.setResult(PlayerLoginEvent.Result.KICK_BANNED);
event.setKickMessage(ChatColor
.translateAlternateColorCodes('&',
AntiVPN.getInstance().getVpnConfig().getKickString()
.replace("%player%", event.getPlayer().getName())
.replace("%country%", result.getCountryName())
.replace("%code%", result.getCountryCode())));
// End "online" fix
if(AntiVPN.getInstance().getVpnConfig().kickPlayersOnDetect())
player.kickPlayer(org.bukkit.ChatColor.translateAlternateColorCodes('&',
AntiVPN.getInstance().getVpnConfig().getKickString()));
log(Level.INFO, event.getPlayer().getName()
+ " joined on a VPN/Proxy (" + result.getMethod() + ")");
//Ensuring the user wishes to alert to staff
if(AntiVPN.getInstance().getVpnConfig().alertToStaff())
AntiVPN.getInstance().getPlayerExecutor().getOnlinePlayers().stream()
.filter(APIPlayer::isAlertsEnabled)
.forEach(pl -> pl.sendMessage(AntiVPN.getInstance().getVpnConfig().alertMessage()
.replace("%player%", event.getPlayer().getName())
.replace("%reason%", result.getMethod())
.replace("%country%", result.getCountryName())
.replace("%city%", result.getCity())));
//In case the user wants to run their own commands instead of using the built in kicking
if(AntiVPN.getInstance().getVpnConfig().runCommands()) {
String playerName = event.getPlayer().getName();
BukkitPlugin.pluginInstance.getPlayerCommandRunner()
.addAction(event.getPlayer().getUniqueId(), () -> {
for (String command : AntiVPN.getInstance().getVpnConfig().commands()) {
Bukkit.dispatchCommand(Bukkit.getConsoleSender(),
ChatColor.translateAlternateColorCodes('&',
command.replace("%player%",
playerName)));
}
});
}
AntiVPN.getInstance().detections++;
}
} else {
log(Level.WARNING,
"The API query was not a success! " +
@@ -3,6 +3,7 @@ package dev.brighten.antivpn.bukkit;
import dev.brighten.antivpn.AntiVPN;
import dev.brighten.antivpn.bukkit.command.BukkitCommand;
import dev.brighten.antivpn.command.Command;
import lombok.Getter;
import org.bstats.bukkit.Metrics;
import org.bstats.charts.SingleLineChart;
import org.bukkit.Bukkit;
@@ -21,8 +22,12 @@ public class BukkitPlugin extends JavaPlugin {
public static BukkitPlugin pluginInstance;
private SimpleCommandMap commandMap;
private List<org.bukkit.command.Command> registeredCommands = new ArrayList<>();
private final List<org.bukkit.command.Command> registeredCommands = new ArrayList<>();
@Getter
private SingleLineChart vpnDetections, ipsChecked;
@Getter
private PlayerCommandRunner playerCommandRunner;
public void onEnable() {
pluginInstance = this;
@@ -30,6 +35,9 @@ public class BukkitPlugin extends JavaPlugin {
Bukkit.getLogger().info("Starting AntiVPN services...");
AntiVPN.start(new BukkitListener(), new BukkitPlayerExecutor(), getDataFolder());
playerCommandRunner = new PlayerCommandRunner();
playerCommandRunner.start();
// Loading our bStats metrics to be pushed to https://bstats.org
if(AntiVPN.getInstance().getVpnConfig().metrics()) {
Bukkit.getLogger().info("Starting bStats metrics...");
@@ -84,6 +92,7 @@ public class BukkitPlugin extends JavaPlugin {
public void onDisable() {
Bukkit.getLogger().info("Stopping plugin services...");
AntiVPN.getInstance().stop();
playerCommandRunner.stop();
Bukkit.getLogger().info("Unregistering commands...");
try {
@@ -0,0 +1,61 @@
package dev.brighten.antivpn.bukkit;
import dev.brighten.antivpn.utils.MiscUtils;
import lombok.Data;
import org.bukkit.Bukkit;
import org.bukkit.scheduler.BukkitRunnable;
import java.util.Queue;
import java.util.UUID;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
public class PlayerCommandRunner {
private final ScheduledExecutorService executorService;
private final Queue<PlayerAction> playerActions = new ArrayBlockingQueue<>(10000);
public PlayerCommandRunner() {
executorService = Executors.newSingleThreadScheduledExecutor(
MiscUtils.createThreadFactory("AntiVPN:PlayerCommandRunner")
);
}
void start() {
executorService.scheduleAtFixedRate(() -> {
long currentTime = System.currentTimeMillis();
while(!playerActions.isEmpty()) {
PlayerAction action = playerActions.peek();
if(action == null) continue;
if(currentTime - action.start > 2000L || Bukkit.getPlayer(action.getUuid()) != null) {
new BukkitRunnable() {
public void run() {
action.getAction().run();
}
}.runTask(BukkitPlugin.pluginInstance);
playerActions.poll();
}
}
}, 1000, 100, TimeUnit.MILLISECONDS);
}
void stop() {
executorService.shutdown();
playerActions.clear();
}
void addAction(UUID uuid, Runnable action) {
playerActions.add(new PlayerAction(uuid, System.currentTimeMillis(), action));
}
@Data
static class PlayerAction {
private final UUID uuid;
private final long start;
private final Runnable action;
}
}