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Handle player online check in AsyncPlayerPreLoginEvent

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Apparently, online players with the same username are kicked before PlayerLoginEvent is called. This commit moves the online player check to AsyncPlayerPreloginEvent so the default behaviour can still be modified

Fixes #642
This commit is contained in:
JeromSar 2015-05-30 20:51:49 +02:00
parent a4d8f4646e
commit c002fbc537
8 changed files with 133 additions and 188 deletions
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4
buildnumber.properties
View File

@ -1,3 +1,3 @@
#Build Number for ANT. Do not edit!
#Sat May 30 20:10:27 CEST 2015
build.number=1043
#Sat May 30 20:46:17 CEST 2015
build.number=1052

3
src/me/StevenLawson/TotalFreedomMod/Commands/Command_saconfig.java
View File

@ -57,7 +57,8 @@ public class Command_saconfig extends TFM_Command
{
final TFM_Admin admin = TFM_AdminList.getEntry(sender_p);
if (admin == null) {
if (admin == null)
{
playerMsg("Could not find your admin entry! Please notify a developer.", ChatColor.RED);
return true;
}

28
src/me/StevenLawson/TotalFreedomMod/Listener/TFM_PlayerListener.java
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@ -45,6 +45,7 @@ import org.bukkit.event.Listener;
import org.bukkit.event.block.Action;
import org.bukkit.event.block.LeavesDecayEvent;
import org.bukkit.event.player.AsyncPlayerChatEvent;
import org.bukkit.event.player.AsyncPlayerPreLoginEvent;
import org.bukkit.event.player.PlayerCommandPreprocessEvent;
import org.bukkit.event.player.PlayerDropItemEvent;
import org.bukkit.event.player.PlayerInteractEvent;
@ -388,7 +389,7 @@ public class TFM_PlayerListener implements Listener
final Player player = event.getPlayer();
final TFM_PlayerData playerdata = TFM_PlayerData.getPlayerData(player);
// Check absolute value to account for negatives
if(Math.abs(event.getTo().getX()) >= MAX_XY_COORD || Math.abs(event.getTo().getZ()) >= MAX_XY_COORD)
if (Math.abs(event.getTo().getX()) >= MAX_XY_COORD || Math.abs(event.getTo().getZ()) >= MAX_XY_COORD)
{
event.setCancelled(true); // illegal position, cancel it
}
@ -791,7 +792,7 @@ public class TFM_PlayerListener implements Listener
final TFM_Player playerEntry;
TFM_Log.info("[JOIN] " + TFM_Util.formatPlayer(player) + " joined the game with IP address: " + ip, true);
// Check absolute value to account for negatives
if(Math.abs(player.getLocation().getX()) >= MAX_XY_COORD || Math.abs(player.getLocation().getZ()) >= MAX_XY_COORD)
if (Math.abs(player.getLocation().getX()) >= MAX_XY_COORD || Math.abs(player.getLocation().getZ()) >= MAX_XY_COORD)
{
player.teleport(player.getWorld().getSpawnLocation()); // Illegal position, teleport to spawn
}
@ -911,26 +912,15 @@ public class TFM_PlayerListener implements Listener
}.runTaskLater(TotalFreedomMod.plugin, 20L * 1L);
}
@EventHandler(priority = EventPriority.HIGHEST)
public void onPlayerPreLogin(AsyncPlayerPreLoginEvent event)
{
TFM_ServerInterface.handlePlayerPreLogin(event);
}
@EventHandler(priority = EventPriority.HIGHEST)
public void onPlayerLogin(PlayerLoginEvent event)
{
if (TFM_ConfigEntry.FORCE_IP_ENABLED.getBoolean())
{
final String hostname = event.getHostname().replace("FML", ""); // Forge fix - https://github.com/TotalFreedom/TotalFreedomMod/issues/493
final String connectAddress = TFM_ConfigEntry.SERVER_ADDRESS.getString();
final int connectPort = TotalFreedomMod.server.getPort();
if (!hostname.equalsIgnoreCase(connectAddress + ":" + connectPort) && !hostname.equalsIgnoreCase(connectAddress + ".:" + connectPort))
{
final int forceIpPort = TFM_ConfigEntry.FORCE_IP_PORT.getInteger();
event.disallow(PlayerLoginEvent.Result.KICK_OTHER,
TFM_ConfigEntry.FORCE_IP_KICKMSG.getString()
.replace("%address%", TFM_ConfigEntry.SERVER_ADDRESS.getString() + (forceIpPort == DEFAULT_PORT ? "" : ":" + forceIpPort)));
return;
}
}
TFM_ServerInterface.handlePlayerLogin(event);
}
}

2
src/me/StevenLawson/TotalFreedomMod/TFM_AdminList.java
View File

@ -406,7 +406,7 @@ public class TFM_AdminList
public static boolean isSuperAdminSafe(UUID uuid, String ip)
{
if (TotalFreedomMod.server.getOnlineMode())
if (TotalFreedomMod.server.getOnlineMode() && uuid != null)
{
return TFM_AdminList.getSuperUUIDs().contains(uuid);
}

1
src/me/StevenLawson/TotalFreedomMod/TFM_PermbanList.java
View File

@ -7,6 +7,7 @@ import me.StevenLawson.TotalFreedomMod.Config.TFM_Config;
public class TFM_PermbanList
{
private static final List<String> PERMBANNED_PLAYERS;
private static final List<String> PERMBANNED_IPS;

86
src/me/StevenLawson/TotalFreedomMod/TFM_PlayerList.java
View File

@ -11,65 +11,53 @@ import me.StevenLawson.TotalFreedomMod.Config.TFM_Config;
import org.bukkit.Bukkit;
import org.bukkit.entity.Player;
public class TFM_PlayerList
{
public class TFM_PlayerList {
private static final Map<UUID, TFM_Player> PLAYER_LIST = new HashMap<UUID, TFM_Player>();
private TFM_PlayerList()
{
private TFM_PlayerList() {
throw new AssertionError();
}
public static Set<TFM_Player> getAllPlayers()
{
public static Set<TFM_Player> getAllPlayers() {
return Collections.unmodifiableSet(Sets.newHashSet(PLAYER_LIST.values()));
}
public static void load()
{
public static void load() {
PLAYER_LIST.clear();
// Load online players
for (Player player : Bukkit.getOnlinePlayers())
{
for (Player player : Bukkit.getOnlinePlayers()) {
getEntry(player);
}
TFM_Log.info("Loaded playerdata for " + PLAYER_LIST.size() + " players");
}
public static void saveAll()
{
for (TFM_Player entry : PLAYER_LIST.values())
{
public static void saveAll() {
for (TFM_Player entry : PLAYER_LIST.values()) {
save(entry);
}
}
// May return null
public static TFM_Player getEntry(UUID uuid)
{
if (PLAYER_LIST.containsKey(uuid))
{
public static TFM_Player getEntry(UUID uuid) {
if (PLAYER_LIST.containsKey(uuid)) {
return PLAYER_LIST.get(uuid);
}
final File configFile = getConfigFile(uuid);
if (!configFile.exists())
{
if (!configFile.exists()) {
return null;
}
final TFM_Player entry = new TFM_Player(uuid, getConfig(uuid));
if (entry.isComplete())
{
if (entry.isComplete()) {
PLAYER_LIST.put(uuid, entry);
return entry;
}
else
{
} else {
TFM_Log.warning("Could not load entry: Entry is not complete!");
configFile.delete();
}
@ -77,13 +65,11 @@ public class TFM_PlayerList
return null;
}
public static TFM_Player getEntry(Player player)
{
public static TFM_Player getEntry(Player player) {
final UUID uuid = TFM_UuidManager.getUniqueId(player);
TFM_Player entry = getEntry(uuid);
if (entry != null)
{
if (entry != null) {
return entry;
}
@ -101,12 +87,10 @@ public class TFM_PlayerList
return entry;
}
public static void removeEntry(Player player)
{
public static void removeEntry(Player player) {
final UUID uuid = TFM_UuidManager.getUniqueId(player);
if (!PLAYER_LIST.containsKey(uuid))
{
if (!PLAYER_LIST.containsKey(uuid)) {
return;
}
@ -115,20 +99,16 @@ public class TFM_PlayerList
PLAYER_LIST.remove(uuid);
}
public static boolean existsEntry(Player player)
{
public static boolean existsEntry(Player player) {
return existsEntry(TFM_UuidManager.getUniqueId(player));
}
public static boolean existsEntry(UUID uuid)
{
public static boolean existsEntry(UUID uuid) {
return getConfigFile(uuid).exists();
}
public static void setUniqueId(TFM_Player entry, UUID newUuid)
{
if (entry.getUniqueId().equals(newUuid))
{
public static void setUniqueId(TFM_Player entry, UUID newUuid) {
if (entry.getUniqueId().equals(newUuid)) {
TFM_Log.warning("Not setting new UUID: UUIDs match!");
return;
}
@ -147,16 +127,13 @@ public class TFM_PlayerList
// Remove old entry
PLAYER_LIST.remove(entry.getUniqueId());
final File oldFile = getConfigFile(entry.getUniqueId());
if (oldFile.exists() && !oldFile.delete())
{
if (oldFile.exists() && !oldFile.delete()) {
TFM_Log.warning("Could not delete config: " + getConfigFile(entry.getUniqueId()).getName());
}
}
public static void purgeAll()
{
for (File file : getConfigFolder().listFiles())
{
public static void purgeAll() {
for (File file : getConfigFolder().listFiles()) {
file.delete();
}
@ -164,27 +141,22 @@ public class TFM_PlayerList
load();
}
public static File getConfigFolder()
{
public static File getConfigFolder() {
return new File(TotalFreedomMod.plugin.getDataFolder(), "players");
}
public static File getConfigFile(UUID uuid)
{
public static File getConfigFile(UUID uuid) {
return new File(getConfigFolder(), uuid + ".yml");
}
public static TFM_Config getConfig(UUID uuid)
{
public static TFM_Config getConfig(UUID uuid) {
final TFM_Config config = new TFM_Config(TotalFreedomMod.plugin, getConfigFile(uuid), false);
config.load();
return config;
}
public static void save(TFM_Player entry)
{
if (!entry.isComplete())
{
public static void save(TFM_Player entry) {
if (!entry.isComplete()) {
throw new IllegalArgumentException("Entry is not complete!");
}

65
src/me/StevenLawson/TotalFreedomMod/TFM_ServerInterface.java
View File

@ -5,12 +5,14 @@ import java.util.List;
import java.util.UUID;
import java.util.regex.Pattern;
import me.StevenLawson.TotalFreedomMod.Config.TFM_ConfigEntry;
import static me.StevenLawson.TotalFreedomMod.Listener.TFM_PlayerListener.DEFAULT_PORT;
import net.minecraft.server.v1_8_R2.EntityPlayer;
import net.minecraft.server.v1_8_R2.MinecraftServer;
import net.minecraft.server.v1_8_R2.PropertyManager;
import org.bukkit.ChatColor;
import org.bukkit.Server;
import org.bukkit.entity.Player;
import org.bukkit.event.player.AsyncPlayerPreLoginEvent;
import org.bukkit.event.player.PlayerLoginEvent;
import org.bukkit.event.player.PlayerLoginEvent.Result;
@ -62,6 +64,29 @@ public class TFM_ServerInterface
return MinecraftServer.getServer().getVersion();
}
public static void handlePlayerPreLogin(AsyncPlayerPreLoginEvent event)
{
final String ip = event.getAddress().getHostAddress().trim();
final boolean isAdmin = TFM_AdminList.isSuperAdminSafe(null, ip);
// Check if the player is already online
for (Player onlinePlayer : TotalFreedomMod.server.getOnlinePlayers())
{
if (!onlinePlayer.getName().equalsIgnoreCase(event.getName()))
{
continue;
}
if (!isAdmin) {
event.disallow(AsyncPlayerPreLoginEvent.Result.KICK_OTHER, "Your username is already logged into this server.");
} else {
event.allow();
TFM_Sync.playerKick(onlinePlayer, "An admin just logged in with the username you are using.");
}
return;
}
}
public static void handlePlayerLogin(PlayerLoginEvent event)
{
final Server server = TotalFreedomMod.server;
@ -70,19 +95,38 @@ public class TFM_ServerInterface
final String ip = event.getAddress().getHostAddress().trim();
final UUID uuid = TFM_UuidManager.newPlayer(player, ip);
// Perform username checks
// Check username length
if (username.length() < 3 || username.length() > TotalFreedomMod.MAX_USERNAME_LENGTH)
{
event.disallow(Result.KICK_OTHER, "Your username is an invalid length (must be between 3 and 20 characters long).");
return;
}
// Check username characters
if (!USERNAME_REGEX.matcher(username).find())
{
event.disallow(Result.KICK_OTHER, "Your username contains invalid characters.");
return;
}
// Check force-IP match
if (TFM_ConfigEntry.FORCE_IP_ENABLED.getBoolean())
{
final String hostname = event.getHostname().replace("FML", ""); // Forge fix - https://github.com/TotalFreedom/TotalFreedomMod/issues/493
final String connectAddress = TFM_ConfigEntry.SERVER_ADDRESS.getString();
final int connectPort = TotalFreedomMod.server.getPort();
if (!hostname.equalsIgnoreCase(connectAddress + ":" + connectPort) && !hostname.equalsIgnoreCase(connectAddress + ".:" + connectPort))
{
final int forceIpPort = TFM_ConfigEntry.FORCE_IP_PORT.getInteger();
event.disallow(PlayerLoginEvent.Result.KICK_OTHER,
TFM_ConfigEntry.FORCE_IP_KICKMSG.getString()
.replace("%address%", TFM_ConfigEntry.SERVER_ADDRESS.getString() + (forceIpPort == DEFAULT_PORT ? "" : ":" + forceIpPort)));
return;
}
}
// Check if player is admin
// Not safe to use TFM_Util.isSuperAdmin(player) because player.getAddress() will return a null until after player login.
final boolean isAdmin = TFM_AdminList.isSuperAdminSafe(uuid, ip);
@ -93,15 +137,6 @@ public class TFM_ServerInterface
// Force-allow log in
event.allow();
// Kick players with the same name
for (Player onlinePlayer : server.getOnlinePlayers())
{
if (onlinePlayer.getName().equalsIgnoreCase(username))
{
onlinePlayer.kickPlayer("An admin just logged in with the username you are using.");
}
}
int count = server.getOnlinePlayers().size();
if (count >= server.getMaxPlayers())
{
@ -151,16 +186,6 @@ public class TFM_ServerInterface
return;
}
// Username already logged in
for (Player onlinePlayer : server.getOnlinePlayers())
{
if (onlinePlayer.getName().equalsIgnoreCase(username))
{
event.disallow(Result.KICK_OTHER, "Your username is already logged into this server.");
return;
}
}
// Whitelist
if (isWhitelisted())
{

132
src/me/StevenLawson/TotalFreedomMod/TFM_UuidManager.java
View File

@ -25,20 +25,18 @@ import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
public class TFM_UuidManager
{
public class TFM_UuidManager {
public static final String TABLE_NAME = "uuids";
private static final TFM_SqliteDatabase SQL;
private static final Statement FIND;
private static final Statement UPDATE;
private TFM_UuidManager()
{
private TFM_UuidManager() {
throw new AssertionError();
}
static
{
static {
SQL = new TFM_SqliteDatabase(
"uuids.db",
TABLE_NAME,
@ -48,40 +46,34 @@ public class TFM_UuidManager
UPDATE = SQL.addPreparedStatement("REPLACE INTO " + TABLE_NAME + " (username, uuid) VALUES (?, ?);");
}
public static void load()
{
public static void load() {
// Init DB
SQL.connect();
}
public static void close()
{
public static void close() {
SQL.close();
}
public static int purge()
{
public static int purge() {
return SQL.purge();
}
public static UUID newPlayer(Player player, String ip)
{
public static UUID newPlayer(Player player, String ip) {
TFM_Log.info("Obtaining UUID for new player: " + player.getName());
final String username = player.getName().toLowerCase();
// Look in DB
final UUID dbUuid = find(username);
if (dbUuid != null)
{
if (dbUuid != null) {
return dbUuid;
}
// Find UUID and update in DB if not found
// Try API
UUID uuid = TFM_UuidResolver.getUUIDOf(username);
if (uuid == null)
{
if (uuid == null) {
// Spoof
uuid = generateSpoofUuid(username);
}
@ -90,11 +82,9 @@ public class TFM_UuidManager
return uuid;
}
public static UUID getUniqueId(OfflinePlayer offlinePlayer)
{
public static UUID getUniqueId(OfflinePlayer offlinePlayer) {
// Online check first
if (offlinePlayer.isOnline() && TFM_PlayerData.hasPlayerData(offlinePlayer.getPlayer()))
{
if (offlinePlayer.isOnline() && TFM_PlayerData.hasPlayerData(offlinePlayer.getPlayer())) {
return TFM_PlayerData.getPlayerData(offlinePlayer.getPlayer()).getUniqueId();
}
@ -102,19 +92,16 @@ public class TFM_UuidManager
return getUniqueId(offlinePlayer.getName());
}
public static UUID getUniqueId(String username)
{
public static UUID getUniqueId(String username) {
// Look in DB
final UUID dbUuid = find(username);
if (dbUuid != null)
{
if (dbUuid != null) {
return dbUuid;
}
// Try API
final UUID apiUuid = TFM_UuidResolver.getUUIDOf(username);
if (apiUuid != null)
{
if (apiUuid != null) {
return apiUuid;
}
@ -122,10 +109,8 @@ public class TFM_UuidManager
return generateSpoofUuid(username);
}
public static void rawSetUUID(String name, UUID uuid)
{
if (name == null || uuid == null || name.isEmpty())
{
public static void rawSetUUID(String name, UUID uuid) {
if (name == null || uuid == null || name.isEmpty()) {
TFM_Log.warning("Not setting raw UUID: name and uuid may not be null!");
return;
}
@ -133,86 +118,67 @@ public class TFM_UuidManager
update(name.toLowerCase().trim(), uuid);
}
private static UUID find(String searchName)
{
if (!SQL.connect())
{
private static UUID find(String searchName) {
if (!SQL.connect()) {
return null;
}
final ResultSet result;
try
{
try {
final PreparedStatement statement = FIND.getStatement();
statement.clearParameters();
statement.setString(1, searchName.toLowerCase());
result = statement.executeQuery();
}
catch (Exception ex)
{
} catch (Exception ex) {
TFM_Log.severe("Could not execute find statement!");
TFM_Log.severe(ex);
return null;
}
if (!TFM_SqlUtil.hasData(result))
{
if (!TFM_SqlUtil.hasData(result)) {
TFM_SqlUtil.close(result);
return null;
}
try
{
try {
final String uuidString = result.getString("uuid");
return UUID.fromString(uuidString);
}
catch (Exception ex)
{
} catch (Exception ex) {
TFM_Log.severe(ex);
return null;
}
finally
{
} finally {
TFM_SqlUtil.close(result);
}
}
private static boolean update(String username, UUID uuid)
{
if (!SQL.connect())
{
private static boolean update(String username, UUID uuid) {
if (!SQL.connect()) {
return false;
}
try
{
try {
final PreparedStatement statement = UPDATE.getStatement();
statement.clearParameters();
statement.setString(1, username.toLowerCase());
statement.setString(2, uuid.toString());
statement.executeUpdate();
return true;
}
catch (Exception ex)
{
} catch (Exception ex) {
TFM_Log.severe("Could not execute update statement!");
TFM_Log.severe(ex);
return false;
}
}
private static UUID generateSpoofUuid(String name)
{
private static UUID generateSpoofUuid(String name) {
name = name.toLowerCase();
TFM_Log.info("Generating spoof UUID for " + name);
try
{
try {
final MessageDigest digest = MessageDigest.getInstance("SHA1");
final byte[] result = digest.digest(name.getBytes());
final StringBuilder builder = new StringBuilder();
for (int i = 0; i < result.length; i++)
{
for (int i = 0; i < result.length; i++) {
builder.append(Integer.toString((result[i] & 0xff) + 0x100, 16).substring(1));
}
@ -222,36 +188,30 @@ public class TFM_UuidManager
+ "-" + builder.substring(12, 16)
+ "-" + builder.substring(16, 20)
+ "-" + builder.substring(20, 32));
}
catch (NoSuchAlgorithmException ex)
{
} catch (NoSuchAlgorithmException ex) {
TFM_Log.warning("Could not generate spoof UUID: SHA1 algorithm not found!");
}
return UUID.randomUUID();
}
public static class TFM_UuidResolver implements Callable<Map<String, UUID>>
{
public static class TFM_UuidResolver implements Callable<Map<String, UUID>> {
private static final double PROFILES_PER_REQUEST = 100;
private static final String PROFILE_URL = "https://api.mojang.com/profiles/minecraft";
private final JSONParser jsonParser = new JSONParser();
private final List<String> names;
public TFM_UuidResolver(List<String> names)
{
public TFM_UuidResolver(List<String> names) {
this.names = ImmutableList.copyOf(names);
}
@Override
public Map<String, UUID> call()
{
public Map<String, UUID> call() {
final Map<String, UUID> uuidMap = new HashMap<String, UUID>();
int requests = (int) Math.ceil(names.size() / PROFILES_PER_REQUEST);
for (int i = 0; i < requests; i++)
{
try
{
for (int i = 0; i < requests; i++) {
try {
final URL url = new URL(PROFILE_URL);
final HttpURLConnection connection = (HttpURLConnection) url.openConnection();
@ -270,8 +230,7 @@ public class TFM_UuidManager
final JSONArray array = (JSONArray) jsonParser.parse(new InputStreamReader(connection.getInputStream()));
for (Object profile : array)
{
for (Object profile : array) {
final JSONObject jsonProfile = (JSONObject) profile;
final String id = (String) jsonProfile.get("id");
final String name = (String) jsonProfile.get("name");
@ -284,13 +243,10 @@ public class TFM_UuidManager
uuidMap.put(name, uuid);
}
if (i != requests - 1)
{
if (i != requests - 1) {
Thread.sleep(100L);
}
}
catch (Exception ex)
{
} catch (Exception ex) {
TFM_Log.severe("Could not resolve UUID(s) of "
+ StringUtils.join(names.subList(i * 100, Math.min((i + 1) * 100, names.size())), ", "));
//TFM_Log.severe(ex);
@ -299,9 +255,9 @@ public class TFM_UuidManager
return uuidMap;
}
public static UUID getUUIDOf(String name)
{
public static UUID getUUIDOf(String name) {
return new TFM_UuidResolver(Arrays.asList(name)).call().get(name);
}
}
}