Invoke forcelogin in BungeeCord only once

Got it wrong the first time.

.gitignore

@@ -45,4 +45,5 @@ gradle-app.setting
 # Project module targets
 bukkit/target
 universal/target
-bungee/target
+bungee/target
+core/target

CHANGELOG.md

@@ -1,3 +1,72 @@
+######1.8
+
+* Fix third-party not premium player detection
+* Fix ProtocolSupport BungeeCord
+
+######1.7.1
+
+* Fix BungeeCord autoRegister (Fixes #46)
+* Fix protocollsupport autoregister
+
+######1.7
+
+* Added support for making requests to Mojang from different IPv4 addresses
+* Added us.mcapi.com as third-party APIs to workaround rate-limits
+* Fixed NPE in BungeeCord on cracked session
+* Fixed skin applies if premium uuid is deactivated
+* Fix player entry is not saved if namechangecheck is enabled
+* Fix skin applies for third-party plugins
+* Switch to mcapi.ca for uuid lookups
+* Fix BungeeCord not setting an premium uuid
+* Fix setting skin on Cauldron
+* Fix saving on name change
+
+######1.6.2
+
+* Fixed support for new LoginSecurity version
+
+######1.6.1
+
+* Fix message typo in BungeeCord which created a NPE if premium-warning is activated
+
+######1.6
+
+* Add a warning message if the user tries to invoke the premium command
+* Added missing translation if the server isn't fully started
+* Removed ProtocolLib as required dependency. You can use ProtocolSupport or BungeeCord as alternative
+* Reduce the number of worker threads from 5 to 3 in ProtocolLib
+* Process packets in ProtocolLib async/non-blocking -> better performance
+* Fixed missing translation in commands
+* Fixed cracked command not working on BungeeCord
+* Fix error if forward skins is disabled
+
+######1.5.2
+
+* Fixed BungeeCord force logins if there is a lobby server
+* Removed cache expire in BungeeCord
+* Applies skin earlier to make it visible for other plugins listening on login events
+
+######1.5.1
+
+* Fixed BungeeCord support by correctly saving the proxy ids
+
+######1.5
+
+* Added localization
+* Fixed NPE on premium name check if it's pure cracked player
+* Fixed NPE in BungeeCord on cracked login for existing players
+* Fixed saving of existing cracked players
+
+######1.4
+
+* Added Bungee setAuthPlugin method
+* Added nameChangeCheck
+* Multiple BungeeCord support
+
+######1.3.1
+
+* Prevent thread create violation in BungeeCord
+
 ######1.3
 
 * Added support for AuthMe 3.X
@@ -123,4 +192,4 @@
 * Added better error handling
 
 #####0.1
-* First release
+* First release

README.md

@@ -15,11 +15,13 @@ So they don't need to enter passwords. This is also called auto login (auto-logi
 * Forge/Sponge message support
 * Premium UUID support
 * Forwards Skins
+* Detect user name changed and will update the existing database record
 * BungeeCord support
 * Auto register new premium players
 * Plugin: ProtocolSupport is supported and can be used as an alternative to ProtocolLib
 * No client modifications needed
 * Good performance by using async non blocking operations
+* Locale messages
 * Free
 * Open source
 

bukkit/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <groupId>com.github.games647</groupId>
         <artifactId>fastlogin</artifactId>
-        <version>1.3</version>
+        <version>1.7.1</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
@@ -22,6 +22,12 @@
             <url>https://hub.spigotmc.org/nexus/content/repositories/snapshots/</url>
         </repository>
 
+        <!--LoginSecurity-->
+        <repository>
+            <id>lenis0012-repo</id>
+            <url>http://ci.lenis0012.com/plugin/repository/everything/</url>
+        </repository>
+
         <!--ProtocolLib-->
         <repository>
             <id>dmulloy2-repo</id>
@@ -53,11 +59,18 @@
     </repositories>
 
     <dependencies>
+        <dependency>
+            <groupId>com.github.games647</groupId>
+            <artifactId>fastlogin.core</artifactId>
+            <version>${project.version}</version>
+            <scope>provided</scope>
+        </dependency>
+
         <!--Server API-->
         <dependency>
             <groupId>org.spigotmc</groupId>
             <artifactId>spigot-api</artifactId>
-            <version>1.9-R0.1-SNAPSHOT</version>
+            <version>1.10-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
 
@@ -65,7 +78,7 @@
         <dependency>
             <groupId>com.comphenix.protocol</groupId>
             <artifactId>ProtocolLib</artifactId>
-            <version>3.6.5-SNAPSHOT</version>
+            <version>4.0.1</version>
             <optional>true</optional>
         </dependency>
 
@@ -92,8 +105,10 @@
         </dependency>
 
         <dependency>
+            <!--Oringal owner is lenis, but maven always uses the newest version-->
             <groupId>com.github.lenis0012</groupId>
             <artifactId>LoginSecurity-2</artifactId>
+            <!--Old version 2.0 -->
             <version>-9c09e73b7f-1</version>
             <exclusions>
                 <exclusion>
@@ -103,6 +118,18 @@
             </exclusions>
         </dependency>
 
+        <dependency>
+            <groupId>com.lenis0012.bukkit</groupId>
+            <artifactId>loginsecurity</artifactId>
+            <version>2.1.3-SNAPSHOT</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>*</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+
         <dependency>
             <groupId>io.github.lucaseasedup.logit</groupId>
             <artifactId>LogIt</artifactId>

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/BukkitCore.java

@@ -0,0 +1,73 @@
+package com.github.games647.fastlogin.bukkit;
+
+import com.github.games647.fastlogin.core.FastLoginCore;
+import com.google.common.base.Charsets;
+import com.google.common.util.concurrent.ThreadFactoryBuilder;
+
+import java.io.File;
+import java.io.InputStreamReader;
+import java.util.concurrent.ThreadFactory;
+import java.util.logging.Logger;
+
+import org.bukkit.ChatColor;
+import org.bukkit.configuration.file.YamlConfiguration;
+
+public class BukkitCore extends FastLoginCore {
+
+    private final FastLoginBukkit plugin;
+
+    public BukkitCore(FastLoginBukkit plugin) {
+        this.plugin = plugin;
+    }
+
+    @Override
+    public File getDataFolder() {
+        return plugin.getDataFolder();
+    }
+
+    @Override
+    public Logger getLogger() {
+        return plugin.getLogger();
+    }
+
+    @Override
+    public ThreadFactory getThreadFactory() {
+        String pluginName = plugin.getName();
+        return new ThreadFactoryBuilder()
+                .setNameFormat(pluginName + " Database Pool Thread #%1$d")
+                //Hikari create daemons by default
+                .setDaemon(true)
+                .build();
+    }
+
+    @Override
+    public void loadMessages() {
+        plugin.saveResource("messages.yml", false);
+
+        File messageFile = new File(plugin.getDataFolder(), "messages.yml");
+        YamlConfiguration messageConfig = YamlConfiguration.loadConfiguration(messageFile);
+
+        InputStreamReader defaultReader = new InputStreamReader(plugin.getResource("messages.yml"), Charsets.UTF_8);
+        YamlConfiguration defaults = YamlConfiguration.loadConfiguration(defaultReader);
+        for (String key : defaults.getKeys(false)) {
+            String message = ChatColor.translateAlternateColorCodes('&', defaults.getString(key));
+            if (!message.isEmpty()) {
+                localeMessages.put(key, message);
+            }
+        }
+
+        for (String key : messageConfig.getKeys(false)) {
+            String message = ChatColor.translateAlternateColorCodes('&', messageConfig.getString(key));
+            if (message.isEmpty()) {
+                localeMessages.remove(key);
+            } else {
+                localeMessages.put(key, message);
+            }
+        }
+    }
+
+    @Override
+    public void loadConfig() {
+        plugin.saveDefaultConfig();
+    }
+}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/BukkitLoginSession.java

@@ -1,6 +1,7 @@
 package com.github.games647.fastlogin.bukkit;
 
-import com.comphenix.protocol.wrappers.WrappedSignedProperty;
+import com.github.games647.fastlogin.core.LoginSession;
+import com.github.games647.fastlogin.core.PlayerProfile;
 
 import java.util.UUID;
 
@@ -11,33 +12,39 @@ import org.apache.commons.lang.ArrayUtils;
  *
  * This session is invalid if the player disconnects or the login was successful
  */
-public class PlayerSession {
+public class BukkitLoginSession extends LoginSession {
 
-    private final String username;
     private final String serverId;
     private final byte[] verifyToken;
 
     private UUID uuid;
-    private WrappedSignedProperty skinProperty;
     private boolean verified;
-    private boolean registered;
 
-    public PlayerSession(String username, String serverId, byte[] verifyToken) {
-        this.username = username;
+    private String encodedSkinData;
+    private String skinSignature;
+
+    public BukkitLoginSession(String username, String serverId, byte[] verifyToken, boolean registered
+            , PlayerProfile profile) {
+        super(username, registered, profile);
+
         this.serverId = serverId;
         this.verifyToken = ArrayUtils.clone(verifyToken);
     }
 
-    public PlayerSession(String username) {
-        this(username, "", ArrayUtils.EMPTY_BYTE_ARRAY);
+    //available for bungeecord
+    public BukkitLoginSession(String username, boolean registered) {
+        this(username, "", ArrayUtils.EMPTY_BYTE_ARRAY, registered, null);
+    }
+
+    //cracked player
+    public BukkitLoginSession(String username, PlayerProfile profile) {
+        this(username, "", ArrayUtils.EMPTY_BYTE_ARRAY, false, profile);
     }
 
     /**
-     * Gets the random generated server id. This makes sure the request
-     * sent from the client is just for this server.
+     * Gets the random generated server id. This makes sure the request sent from the client is just for this server.
      *
-     * See this for details
-     * http://www.sk89q.com/2011/09/minecraft-name-spoofing-exploit/
+     * See this for details http://www.sk89q.com/2011/09/minecraft-name-spoofing-exploit/
      *
      * Empty if it's a BungeeCord connection
      *
@@ -58,54 +65,27 @@ public class PlayerSession {
         return ArrayUtils.clone(verifyToken);
     }
 
-    /**
-     * Gets the username the player sent to the server
-     *
-     * @return the client sent username
-     */
-    public String getUsername() {
-        return username;
+    public synchronized String getEncodedSkinData() {
+        return encodedSkinData;
     }
 
-    /**
-     * Gets the premium skin of this player
-     *
-     * @return skin property or null if the player has no skin or is a cracked account
-     */
-    public synchronized WrappedSignedProperty getSkin() {
-        return this.skinProperty;
+    public synchronized String getSkinSignature() {
+        return skinSignature;
     }
 
     /**
      * Sets the premium skin property which was retrieved by the session server
      *
-     * @param skinProperty premium skin property
+     * @param encodedData
+     * @param skinSignature
      */
-    public synchronized void setSkin(WrappedSignedProperty skinProperty) {
-        this.skinProperty = skinProperty;
+    public synchronized void setSkin(String encodedData, String skinSignature) {
+        this.encodedSkinData = encodedData;
+        this.skinSignature = skinSignature;
     }
 
     /**
-     * Sets whether the account of this player already exists
-     *
-     * @param registered whether the account exists
-     */
-    public synchronized void setRegistered(boolean registered) {
-        this.registered = registered;
-    }
-
-    /**
-     * Gets whether the account of this player already exists.
-     *
-     * @return whether the account exists
-     */
-    public synchronized boolean needsRegistration() {
-        return !registered;
-    }
-
-    /**
-     * Sets whether the player has a premium (paid account) account
-     * and valid session
+     * Sets whether the player has a premium (paid account) account and valid session
      *
      * @param verified whether the player has valid session
      */
@@ -122,7 +102,6 @@ public class PlayerSession {
         return uuid;
     }
 
-
     /**
      * Set the online UUID if it's fetched
      *
@@ -133,8 +112,7 @@ public class PlayerSession {
     }
 
     /**
-     * Get whether the player has a premium (paid account) account
-     * and valid session
+     * Get whether the player has a premium (paid account) account and valid session
      *
      * @return whether the player has a valid session
      */

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/CompatibleCacheBuilder.java

@@ -0,0 +1,322 @@
+package com.github.games647.fastlogin.bukkit;
+
+import java.lang.reflect.Method;
+import java.util.concurrent.ConcurrentMap;
+import java.util.concurrent.TimeUnit;
+
+import com.google.common.base.Ticker;
+import com.google.common.cache.CacheBuilder;
+import com.google.common.cache.CacheLoader;
+import com.google.common.cache.RemovalListener;
+
+/**
+ * Represents a Guava CacheBuilder that is compatible with both Guava 10 and 13
+ */
+public class CompatibleCacheBuilder<K, V> {
+
+    private static Method BUILD_METHOD;
+    private static Method AS_MAP_METHOD;
+
+
+    /**
+     * Construct a new safe cache builder.
+     *
+     * @param <K> Key type
+     * @param <V> Value type
+     *
+     * @return A new cache builder.
+     */
+    public static <K, V> CompatibleCacheBuilder<K, V> newBuilder() {
+        return new CompatibleCacheBuilder<K, V>();
+    }
+
+    private CacheBuilder<K, V> builder;
+    
+    @SuppressWarnings("unchecked")
+    private CompatibleCacheBuilder() {
+        builder = (CacheBuilder<K, V>) CacheBuilder.newBuilder();
+    }
+
+    /**
+     * Guides the allowed concurrency among update operations. Used as a hint for internal sizing. The table is
+     * internally partitioned to try to permit the indicated number of concurrent updates without contention. Because
+     * assignment of entries to these partitions is not necessarily uniform, the actual concurrency observed may vary.
+     * Ideally, you should choose a value to accommodate as many threads as will ever concurrently modify the table.
+     * Using a significantly higher value than you need can waste space and time, and a significantly lower value can
+     * lead to thread contention. But overestimates and underestimates within an order of magnitude do not usually have
+     * much noticeable impact. A value of one permits only one thread to modify the cache at a time, but since read
+     * operations can proceed concurrently, this still yields higher concurrency than full synchronization. Defaults to
+     * 4.
+     *
+     * <p>
+     * <b>Note:</b>The default may change in the future. If you care about this value, you should always choose it
+     * explicitly.
+     *
+     * @param concurrencyLevel New concurrency level
+     * @return This for chaining
+     *
+     * @throws IllegalArgumentException if {@code concurrencyLevel} is nonpositive
+     * @throws IllegalStateException if a concurrency level was already set
+     */
+    public CompatibleCacheBuilder<K, V> concurrencyLevel(int concurrencyLevel) {
+        builder.concurrencyLevel(concurrencyLevel);
+        return this;
+    }
+
+    /**
+     * Specifies that each entry should be automatically removed from the cache once a fixed duration has elapsed after
+     * the entry's creation, or last access. Access time is reset by
+     * {@link com.google.common.cache.Cache#get Cache.get()}, but not by operations on the view returned by
+     * {@link com.google.common.cache.Cache#asMap() Cache.asMap()}.
+     *
+     * <p>
+     * When {@code duration} is zero, elements will be evicted immediately after being loaded into the cache. This has
+     * the same effect as invoking {@link #maximumSize maximumSize}{@code (0)}. It can be useful in testing, or to
+     * disable caching temporarily without a code change.
+     *
+     * <p>
+     * Expired entries may be counted by {@link com.google.common.cache.Cache#size Cache.size()}, but will never be
+     * visible to read or write operations. Expired entries are currently cleaned up during write operations, or during
+     * occasional read operations in the absense of writes; though this behavior may change in the future.
+     *
+     * @param duration the length of time after an entry is last accessed that it should be automatically removed
+     * @param unit the unit that {@code duration} is expressed in
+     * @return This for chaining
+     *
+     * @throws IllegalArgumentException if {@code duration} is negative
+     * @throws IllegalStateException if the time to idle or time to live was already set
+     */
+    public CompatibleCacheBuilder<K, V> expireAfterAccess(long duration, TimeUnit unit) {
+        builder.expireAfterAccess(duration, unit);
+        return this;
+    }
+
+    /**
+     * Specifies that each entry should be automatically removed from the cache once a fixed duration has elapsed after
+     * the entry's creation, or the most recent replacement of its value.
+     *
+     * <p>
+     * When {@code duration} is zero, elements will be evicted immediately after being loaded into the cache. This has
+     * the same effect as invoking {@link #maximumSize maximumSize}{@code (0)}. It can be useful in testing, or to
+     * disable caching temporarily without a code change.
+     *
+     * <p>
+     * Expired entries may be counted by {@link com.google.common.cache.Cache#size Cache.size()}, but will never be
+     * visible to read or write operations. Expired entries are currently cleaned up during write operations, or during
+     * occasional read operations in the absense of writes; though this behavior may change in the future.
+     *
+     * @param duration the length of time after an entry is created that it should be automatically removed
+     * @param unit the unit that {@code duration} is expressed in
+     * @return This for chaining
+     *
+     * @throws IllegalArgumentException if {@code duration} is negative
+     * @throws IllegalStateException if the time to live or time to idle was already set
+     */
+    public CompatibleCacheBuilder<K, V> expireAfterWrite(long duration, TimeUnit unit) {
+        builder.expireAfterWrite(duration, unit);
+        return this;
+    }
+
+    /**
+     * Sets the minimum total size for the internal hash tables. For example, if the initial capacity is {@code 60}, and
+     * the concurrency level is {@code 8}, then eight segments are created, each having a hash table of size eight.
+     * Providing a large enough estimate at construction time avoids the need for expensive resizing operations later,
+     * but setting this value unnecessarily high wastes memory.
+     *
+     * @param initialCapacity - initial capacity
+     * @return This for chaining
+     *
+     * @throws IllegalArgumentException if {@code initialCapacity} is negative
+     * @throws IllegalStateException if an initial capacity was already set
+     */
+    public CompatibleCacheBuilder<K, V> initialCapacity(int initialCapacity) {
+        builder.initialCapacity(initialCapacity);
+        return this;
+    }
+
+    /**
+     * Specifies the maximum number of entries the cache may contain. Note that the cache <b>may evict an entry before
+     * this limit is exceeded</b>. As the cache size grows close to the maximum, the cache evicts entries that are less
+     * likely to be used again. For example, the cache may evict an entry because it hasn't been used recently or very
+     * often.
+     *
+     * <p>
+     * When {@code size} is zero, elements will be evicted immediately after being loaded into the cache. This has the
+     * same effect as invoking {@link #expireAfterWrite expireAfterWrite}{@code (0, unit)} or      {@link #expireAfterAccess expireAfterAccess}{@code (0,
+	 * unit)}. It can be useful in testing, or to disable caching temporarily without a code change.
+     *
+     * @param size the maximum size of the cache
+     * @return This for chaining
+     *
+     * @throws IllegalArgumentException if {@code size} is negative
+     * @throws IllegalStateException if a maximum size was already set
+     */
+    public CompatibleCacheBuilder<K, V> maximumSize(int size) {
+        builder.maximumSize(size);
+        return this;
+    }
+
+    /**
+     * Specifies a listener instance, which all caches built using this {@code CacheBuilder} will notify each time an
+     * entry is removed from the cache by any means.
+     *
+     * <p>
+     * Each cache built by this {@code CacheBuilder} after this method is called invokes the supplied listener after
+     * removing an element for any reason (see removal causes in
+     * {@link com.google.common.cache.RemovalCause RemovalCause}). It will invoke the listener during invocations of any
+     * of that cache's public methods (even read-only methods).
+     *
+     * <p>
+     * <b>Important note:</b> Instead of returning <em>this</em> as a {@code CacheBuilder} instance, this method returns
+     * {@code CacheBuilder<K1, V1>}. From this point on, either the original reference or the returned reference may be
+     * used to complete configuration and build the cache, but only the "generic" one is type-safe. That is, it will
+     * properly prevent you from building caches whose key or value types are incompatible with the types accepted by
+     * the listener already provided; the {@code CacheBuilder} type cannot do this. For best results, simply use the
+     * standard method-chaining idiom, as illustrated in the documentation at top, configuring a {@code CacheBuilder}
+     * and building your {@link com.google.common.cache.Cache Cache} all in a single statement.
+     *
+     * <p>
+     * <b>Warning:</b> if you ignore the above advice, and use this {@code CacheBuilder} to build a cache whose key or
+     * value type is incompatible with the listener, you will likely experience a {@link ClassCastException} at some
+     * <i>undefined</i> point in the future.
+     *
+     * @param <K1> Key type
+     * @param <V1> Value type
+     * @param listener - removal listener
+     * @return This for chaining
+     *
+     * @throws IllegalStateException if a removal listener was already set
+     */
+    @SuppressWarnings("unchecked")
+    public <K1 extends K, V1 extends V> CompatibleCacheBuilder<K1, V1> removalListener(RemovalListener<? super K1, ? super V1> listener) {
+        builder.removalListener(listener);
+        return (CompatibleCacheBuilder<K1, V1>) this;
+    }
+
+    /**
+     * Specifies a nanosecond-precision time source for use in determining when entries should be expired. By default,
+     * {@link System#nanoTime} is used.
+     *
+     * <p>
+     * The primary intent of this method is to facilitate testing of caches which have been configured with
+     * {@link #expireAfterWrite} or {@link #expireAfterAccess}.
+     *
+     * @param ticker - ticker
+     * @return This for chaining
+     *
+     * @throws IllegalStateException if a ticker was already set
+     */
+    public CompatibleCacheBuilder<K, V> ticker(Ticker ticker) {
+        builder.ticker(ticker);
+        return this;
+    }
+
+    /**
+     * Specifies that each value (not key) stored in the cache should be wrapped in a
+     * {@link java.lang.ref.SoftReference SoftReference} (by default, strong references are used). Softly-referenced
+     * objects will be garbage-collected in a <i>globally</i>
+     * least-recently-used manner, in response to memory demand.
+     *
+     * <p>
+     * <b>Warning:</b> in most circumstances it is better to set a per-cache {@linkplain #maximumSize maximum size}
+     * instead of using soft references. You should only use this method if you are well familiar with the practical
+     * consequences of soft references.
+     *
+     * <p>
+     * <b>Note:</b> when this method is used, the resulting cache will use identity ({@code ==}) comparison to determine
+     * equality of values.
+     *
+     * @return This for chaining
+     *
+     * @throws IllegalStateException if the value strength was already set
+     */
+    public CompatibleCacheBuilder<K, V> softValues() {
+        builder.softValues();
+        return this;
+    }
+
+    /**
+     * Specifies that each key (not value) stored in the cache should be wrapped in a
+     * {@link java.lang.ref.WeakReference WeakReference} (by default, strong references are used).
+     *
+     * <p>
+     * <b>Warning:</b> when this method is used, the resulting cache will use identity ({@code ==}) comparison to
+     * determine equality of keys.
+     *
+     * @return This for chaining
+     *
+     * @throws IllegalStateException if the key strength was already set
+     */
+    public CompatibleCacheBuilder<K, V> weakKeys() {
+        builder.weakKeys();
+        return this;
+    }
+
+    /**
+     * Specifies that each value (not key) stored in the cache should be wrapped in a
+     * {@link java.lang.ref.WeakReference WeakReference} (by default, strong references are used).
+     *
+     * <p>
+     * Weak values will be garbage collected once they are weakly reachable. This makes them a poor candidate for
+     * caching; consider {@link #softValues} instead.
+     *
+     * <p>
+     * <b>Note:</b> when this method is used, the resulting cache will use identity ({@code ==}) comparison to determine
+     * equality of values.
+     *
+     * @return This for chaining
+     *
+     * @throws IllegalStateException if the value strength was already set
+     */
+    public CompatibleCacheBuilder<K, V> weakValues() {
+        builder.weakValues();
+        return this;
+    }
+
+    /**
+     * Returns the cache wrapped as a ConcurrentMap.
+     * <p>
+     * We can't return the direct Cache instance as it changed in Guava 13.
+     *
+     * @param <K1> Key type
+     * @param <V1> Value type
+     * @param loader - cache loader
+     * @return The cache as a a map.
+     */
+    @SuppressWarnings("unchecked")
+    public <K1 extends K, V1 extends V> ConcurrentMap<K1, V1> build(CacheLoader<? super K1, V1> loader) {
+        Object cache = null;
+
+        if (BUILD_METHOD == null) {
+            try {
+                BUILD_METHOD = builder.getClass().getDeclaredMethod("build", CacheLoader.class);
+                BUILD_METHOD.setAccessible(true);
+            } catch (Exception e) {
+                throw new IllegalStateException("Unable to find CacheBuilder.build(CacheLoader)", e);
+            }
+        }
+
+        // Attempt to build the Cache
+        try {
+            cache = BUILD_METHOD.invoke(builder, loader);
+        } catch (Exception e) {
+            throw new IllegalStateException("Unable to invoke " + BUILD_METHOD + " on " + builder, e);
+        }
+
+        if (AS_MAP_METHOD == null) {
+            try {
+                AS_MAP_METHOD = cache.getClass().getMethod("asMap");
+                AS_MAP_METHOD.setAccessible(true);
+            } catch (Exception e) {
+                throw new IllegalStateException("Unable to find Cache.asMap() in " + cache, e);
+            }
+        }
+
+        // Retrieve it as a map
+        try {
+            return (ConcurrentMap<K1, V1>) AS_MAP_METHOD.invoke(cache);
+        } catch (Exception e) {
+            throw new IllegalStateException("Unable to invoke " + AS_MAP_METHOD + " on " + cache, e);
+        }
+    }
+}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/FastLoginBukkit.java

@@ -3,34 +3,27 @@ package com.github.games647.fastlogin.bukkit;
 import com.avaje.ebeaninternal.api.ClassUtil;
 import com.comphenix.protocol.AsynchronousManager;
 import com.comphenix.protocol.ProtocolLibrary;
-import com.comphenix.protocol.ProtocolManager;
-import com.comphenix.protocol.reflect.FuzzyReflection;
-import com.comphenix.protocol.utility.SafeCacheBuilder;
 import com.github.games647.fastlogin.bukkit.commands.CrackedCommand;
 import com.github.games647.fastlogin.bukkit.commands.PremiumCommand;
-import com.github.games647.fastlogin.bukkit.hooks.AuthMeHook;
 import com.github.games647.fastlogin.bukkit.hooks.BukkitAuthPlugin;
-import com.github.games647.fastlogin.bukkit.hooks.CrazyLoginHook;
-import com.github.games647.fastlogin.bukkit.hooks.LogItHook;
-import com.github.games647.fastlogin.bukkit.hooks.LoginSecurityHook;
-import com.github.games647.fastlogin.bukkit.hooks.UltraAuthHook;
-import com.github.games647.fastlogin.bukkit.hooks.xAuthHook;
 import com.github.games647.fastlogin.bukkit.listener.BukkitJoinListener;
 import com.github.games647.fastlogin.bukkit.listener.BungeeCordListener;
-import com.github.games647.fastlogin.bukkit.listener.EncryptionPacketListener;
-import com.github.games647.fastlogin.bukkit.listener.ProtocolSupportListener;
-import com.github.games647.fastlogin.bukkit.listener.StartPacketListener;
+import com.github.games647.fastlogin.bukkit.listener.protocollib.EncryptionPacketListener;
+import com.github.games647.fastlogin.bukkit.listener.protocollib.LoginSkinApplyListener;
+import com.github.games647.fastlogin.bukkit.listener.protocollib.StartPacketListener;
+import com.github.games647.fastlogin.bukkit.listener.protocolsupport.ProtocolSupportListener;
+import com.github.games647.fastlogin.bukkit.tasks.DelayedAuthHook;
+import com.github.games647.fastlogin.core.FastLoginCore;
 import com.google.common.cache.CacheLoader;
-import com.google.common.collect.Lists;
+import com.google.common.collect.Sets;
 
 import java.security.KeyPair;
-import java.sql.SQLException;
 import java.util.List;
+import java.util.Set;
 import java.util.UUID;
 import java.util.concurrent.ConcurrentMap;
 import java.util.concurrent.TimeUnit;
 import java.util.logging.Level;
-import java.util.logging.Logger;
 
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.java.JavaPlugin;
@@ -40,56 +33,44 @@ import org.bukkit.plugin.java.JavaPlugin;
  */
 public class FastLoginBukkit extends JavaPlugin {
 
-    private static final int WORKER_THREADS = 5;
-
-    public static UUID parseId(String withoutDashes) {
-        return UUID.fromString(withoutDashes.substring(0, 8)
-                + "-" + withoutDashes.substring(8, 12)
-                + "-" + withoutDashes.substring(12, 16)
-                + "-" + withoutDashes.substring(16, 20)
-                + "-" + withoutDashes.substring(20, 32));
-    }
+    private static final int WORKER_THREADS = 3;
 
     //provide a immutable key pair to be thread safe | used for encrypting and decrypting traffic
     private final KeyPair keyPair = EncryptionUtil.generateKeyPair();
 
-    protected boolean bungeeCord;
-    private Storage storage;
+    private boolean bungeeCord;
+    private final FastLoginCore core = new BukkitCore(this);
     private boolean serverStarted;
 
+    private final Set<UUID> pendingConfirms = Sets.newHashSet();
+
     //this map is thread-safe for async access (Packet Listener)
     //SafeCacheBuilder is used in order to be version independent
-    private final ConcurrentMap<String, PlayerSession> session = SafeCacheBuilder.<String, PlayerSession>newBuilder()
-            //2 minutes should be enough as a timeout for bad internet connection (Server, Client and Mojang)
-            .expireAfterWrite(1, TimeUnit.MINUTES)
-            //mapped by ip:port -> PlayerSession
-            .build(new CacheLoader<String, PlayerSession>() {
-
-                @Override
-                public PlayerSession load(String key) throws Exception {
-                    //A key should be inserted manually on start packet
-                    throw new UnsupportedOperationException("Not supported");
-                }
-            });
+    private final ConcurrentMap<String, BukkitLoginSession> session = buildCache(1, -1);
+    //1 minutes should be enough as a timeout for bad internet connection (Server, Client and Mojang)
 
     private BukkitAuthPlugin authPlugin;
-    private final MojangApiConnector mojangApiConnector = new MojangApiConnector(this);
     private PasswordGenerator passwordGenerator = new DefaultPasswordGenerator();
     
     @Override
     public void onEnable() {
+        core.loadConfig();
+        core.loadMessages();
+
+        List<String> ipAddresses = getConfig().getStringList("ip-addresses");
+        int requestLimit = getConfig().getInt("mojang-request-limit");
+        MojangApiBukkit mojangApi = new MojangApiBukkit(buildCache(10, -1), getLogger(), ipAddresses, requestLimit);
+        core.setMojangApiConnector(mojangApi);
+
         try {
             if (ClassUtil.isPresent("org.spigotmc.SpigotConfig")) {
-                bungeeCord = (boolean) FuzzyReflection.fromClass(Class.forName("org.spigotmc.SpigotConfig"))
-                        .getFieldByType("bungee", Boolean.TYPE).get(null);
+                bungeeCord = Class.forName("org.spigotmc.SpigotConfig").getDeclaredField("bungee").getBoolean(null);
             }
         } catch (Exception | NoSuchMethodError ex) {
             getLogger().warning("Cannot check bungeecord support. You use a non-spigot build");
             ex.printStackTrace();
         }
 
-        saveDefaultConfig();
-
         if (getServer().getOnlineMode()) {
             //we need to require offline to prevent a session request for a offline player
             getLogger().severe("Server have to be in offline mode");
@@ -113,46 +94,31 @@ public class FastLoginBukkit extends JavaPlugin {
             String username = getConfig().getString("username", "");
             String password = getConfig().getString("password", "");
 
-            this.storage = new Storage(this, driver, host, port, database, username, password);
-            try {
-                storage.createTables();
-            } catch (SQLException sqlEx) {
-                getLogger().log(Level.SEVERE, "Failed to create database tables. Disabling plugin...", sqlEx);
+            if (!core.setupDatabase(driver, host, port, database, username, password)) {
                 setEnabled(false);
                 return;
             }
 
             if (getServer().getPluginManager().isPluginEnabled("ProtocolSupport")) {
                 getServer().getPluginManager().registerEvents(new ProtocolSupportListener(this), this);
-            } else {
-                ProtocolManager protocolManager = ProtocolLibrary.getProtocolManager();
-
+            } else if (getServer().getPluginManager().isPluginEnabled("ProtocolLib")) {
                 //we are performing HTTP request on these so run it async (seperate from the Netty IO threads)
-                AsynchronousManager asynchronousManager = protocolManager.getAsynchronousManager();
+                AsynchronousManager asynchronousManager = ProtocolLibrary.getProtocolManager().getAsynchronousManager();
 
-                StartPacketListener startPacketListener = new StartPacketListener(this, protocolManager);
-                EncryptionPacketListener encryptionPacketListener = new EncryptionPacketListener(this, protocolManager);
+                StartPacketListener startPacketListener = new StartPacketListener(this);
+                EncryptionPacketListener encryptionPacketListener = new EncryptionPacketListener(this);
 
                 asynchronousManager.registerAsyncHandler(startPacketListener).start(WORKER_THREADS);
                 asynchronousManager.registerAsyncHandler(encryptionPacketListener).start(WORKER_THREADS);
+                getServer().getPluginManager().registerEvents(new LoginSkinApplyListener(this), this);
+            } else {
+                getLogger().warning("Either ProtocolLib or ProtocolSupport have to be installed "
+                        + "if you don't use BungeeCord");
             }
         }
 
         //delay dependency setup because we load the plugin very early where plugins are initialized yet
-        getServer().getScheduler().runTask(this, new Runnable() {
-            @Override
-            public void run() {
-                boolean hookFound = registerHooks();
-                if (bungeeCord) {
-                    getLogger().info("BungeeCord setting detected. No auth plugin is required");
-                } else if (!hookFound) {
-                    getLogger().warning("No auth plugin were found by this plugin "
-                            + "(other plugins could hook into this after the intialization of this plugin)"
-                            + "and bungeecord is deactivated. "
-                            + "Either one or both of the checks have to pass in order to use this plugin");
-                }
-            }
-        });
+        getServer().getScheduler().runTask(this, new DelayedAuthHook(this));
 
         getServer().getPluginManager().registerEvents(new BukkitJoinListener(this), this);
 
@@ -166,14 +132,18 @@ public class FastLoginBukkit extends JavaPlugin {
         //clean up
         session.clear();
 
+        if (core != null) {
+            core.close();
+        }
+
         //remove old blacklists
         for (Player player : getServer().getOnlinePlayers()) {
             player.removeMetadata(getName(), this);
         }
+    }
 
-        if (storage != null) {
-            storage.close();
-        }
+    public FastLoginCore getCore() {
+        return core;
     }
 
     public String generateStringPassword(Player player) {
@@ -190,7 +160,7 @@ public class FastLoginBukkit extends JavaPlugin {
      *
      * @return a thread-safe session map
      */
-    public ConcurrentMap<String, PlayerSession> getSessions() {
+    public ConcurrentMap<String, BukkitLoginSession> getSessions() {
         return session;
     }
 
@@ -203,10 +173,6 @@ public class FastLoginBukkit extends JavaPlugin {
         return keyPair;
     }
 
-    public Storage getStorage() {
-        return storage;
-    }
-
     /**
      * Gets the auth plugin hook in order to interact with the plugins. This can be null if no supporting auth plugin
      * was found.
@@ -218,7 +184,7 @@ public class FastLoginBukkit extends JavaPlugin {
             try {
                 Thread.sleep(1000);
             } catch (InterruptedException ex) {
-                Logger.getLogger(FastLoginBukkit.class.getName()).log(Level.SEVERE, null, ex);
+                getLogger().log(Level.SEVERE, null, ex);
             }
         }
 
@@ -229,45 +195,6 @@ public class FastLoginBukkit extends JavaPlugin {
         this.authPlugin = authPlugin;
     }
 
-    /**
-     * Gets the a connection in order to access important features from the Mojang API.
-     *
-     * @return the connector instance
-     */
-    public MojangApiConnector getApiConnector() {
-        return mojangApiConnector;
-    }
-
-    private boolean registerHooks() {
-        BukkitAuthPlugin authPluginHook = null;
-        try {
-            List<Class<? extends BukkitAuthPlugin>> supportedHooks = Lists.newArrayList(AuthMeHook.class
-                    , CrazyLoginHook.class, LogItHook.class, LoginSecurityHook.class, UltraAuthHook.class
-                    , xAuthHook.class);
-            for (Class<? extends BukkitAuthPlugin> clazz : supportedHooks) {
-                String pluginName = clazz.getSimpleName().replace("Hook", "");
-                //uses only member classes which uses AuthPlugin interface (skip interfaces)
-                if (getServer().getPluginManager().getPlugin(pluginName) != null) {
-                    //check only for enabled plugins. A single plugin could be disabled by plugin managers
-                    authPluginHook = clazz.newInstance();
-                    getLogger().log(Level.INFO, "Hooking into auth plugin: {0}", pluginName);
-                    break;
-                }
-            }
-        } catch (InstantiationException | IllegalAccessException ex) {
-            getLogger().log(Level.SEVERE, "Couldn't load the integration class", ex);
-        }
-
-        if (authPluginHook == null) {
-            //run this check for exceptions (errors) and not found plugins
-            getLogger().warning("No support offline Auth plugin found. ");
-            return false;
-        }
-
-        authPlugin = authPluginHook;
-        return true;
-    }
-
     public boolean isBungeeCord() {
         return bungeeCord;
     }
@@ -282,9 +209,32 @@ public class FastLoginBukkit extends JavaPlugin {
         return serverStarted;
     }
 
+    public Set<UUID> getPendingConfirms() {
+        return pendingConfirms;
+    }
+
     public void setServerStarted() {
         if (!this.serverStarted) {
             this.serverStarted = true;
         }
     }
+
+    private <K, V> ConcurrentMap<K, V> buildCache(int minutes, int maxSize) {
+        CompatibleCacheBuilder<Object, Object> builder = CompatibleCacheBuilder.newBuilder();
+
+        if (minutes > 0) {
+            builder.expireAfterWrite(minutes, TimeUnit.MINUTES);
+        }
+
+        if (maxSize > 0) {
+            builder.maximumSize(maxSize);
+        }
+
+        return builder.build(new CacheLoader<K, V>() {
+            @Override
+            public V load(K key) throws Exception {
+                throw new UnsupportedOperationException("Not supported yet.");
+            }
+        });
+    }
 }

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/MojangApiBukkit.java

@@ -0,0 +1,89 @@
+package com.github.games647.fastlogin.bukkit;
+
+import com.github.games647.fastlogin.core.FastLoginCore;
+import com.github.games647.fastlogin.core.MojangApiConnector;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.util.List;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentMap;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import org.json.simple.JSONArray;
+import org.json.simple.JSONObject;
+import org.json.simple.JSONValue;
+
+public class MojangApiBukkit extends MojangApiConnector {
+
+    //mojang api check to prove a player is logged in minecraft and made a join server request
+    private static final String HAS_JOINED_URL = "https://sessionserver.mojang.com/session/minecraft/hasJoined?";
+
+    public MojangApiBukkit(ConcurrentMap<Object, Object> requests, Logger logger, List<String> localAddresses
+            , int rateLimit) {
+        super(requests, logger, localAddresses, rateLimit);
+    }
+
+    @Override
+    public boolean hasJoinedServer(Object session, String serverId) {
+        if (!(session instanceof BukkitLoginSession)) {
+            return false;
+        }
+
+        BukkitLoginSession playerSession = (BukkitLoginSession) session;
+        try {
+            String url = HAS_JOINED_URL + "username=" + playerSession.getUsername() + "&serverId=" + serverId;
+            HttpURLConnection conn = getConnection(url);
+
+            BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
+            String line = reader.readLine();
+            if (line != null && !line.equals("null")) {
+                //validate parsing
+                //http://wiki.vg/Protocol_Encryption#Server
+                JSONObject userData = (JSONObject) JSONValue.parseWithException(line);
+                String uuid = (String) userData.get("id");
+                playerSession.setUuid(FastLoginCore.parseId(uuid));
+
+                JSONArray properties = (JSONArray) userData.get("properties");
+                JSONObject skinProperty = (JSONObject) properties.get(0);
+
+                String propertyName = (String) skinProperty.get("name");
+                if (propertyName.equals("textures")) {
+                    String skinValue = (String) skinProperty.get("value");
+                    String signature = (String) skinProperty.get("signature");
+                    playerSession.setSkin(skinValue, signature);
+                }
+
+                return true;
+            }
+        } catch (Exception ex) {
+            //catch not only ioexceptions also parse and NPE on unexpected json format
+            logger.log(Level.WARNING, "Failed to verify session", ex);
+        }
+
+        //this connection doesn't need to be closed. So can make use of keep alive in java
+        return false;
+    }
+
+    @Override
+    protected UUID getUUIDFromJson(String json) {
+        boolean isArray = json.startsWith("[");
+
+        JSONObject mojangPlayer;
+        if (isArray) {
+            JSONArray array = (JSONArray) JSONValue.parse(json);
+            mojangPlayer = (JSONObject) array.get(0);
+        } else {
+            mojangPlayer = (JSONObject) JSONValue.parse(json);
+        }
+
+        String uuid = (String) mojangPlayer.get("id");
+        if (uuid == null || uuid.equals("null")) {
+            return null;
+        }
+        
+        return FastLoginCore.parseId(uuid);
+    }
+}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/MojangApiConnector.java

@@ -1,124 +0,0 @@
-package com.github.games647.fastlogin.bukkit;
-
-import com.comphenix.protocol.wrappers.WrappedSignedProperty;
-
-import java.io.BufferedReader;
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.net.HttpURLConnection;
-import java.net.URL;
-import java.util.UUID;
-import java.util.logging.Level;
-import java.util.regex.Pattern;
-
-import org.json.simple.JSONArray;
-import org.json.simple.JSONObject;
-import org.json.simple.JSONValue;
-
-public class MojangApiConnector {
-
-    //http connection, read timeout and user agent for a connection to mojang api servers
-    private static final int TIMEOUT = 1 * 1_000;
-    private static final String USER_AGENT = "Premium-Checker";
-
-    //mojang api check to prove a player is logged in minecraft and made a join server request
-    private static final String HAS_JOINED_URL = "https://sessionserver.mojang.com/session/minecraft/hasJoined?";
-
-    //only premium (paid account) users have a uuid from here
-    private static final String UUID_LINK = "https://api.mojang.com/users/profiles/minecraft/";
-    //this includes a-zA-Z1-9_
-    private static final String VALID_PLAYERNAME = "^\\w{2,16}$";
-
-    //compile the pattern only on plugin enable -> and this have to be threadsafe
-    private final Pattern playernameMatcher = Pattern.compile(VALID_PLAYERNAME);
-
-    private final FastLoginBukkit plugin;
-
-    public MojangApiConnector(FastLoginBukkit plugin) {
-        this.plugin = plugin;
-    }
-
-    /**
-     *
-     * @param playerName
-     * @return null on non-premium
-     */
-    public UUID getPremiumUUID(String playerName) {
-        //check if it's a valid playername
-        if (playernameMatcher.matcher(playerName).matches()) {
-            //only make a API call if the name is valid existing mojang account
-            try {
-                HttpURLConnection connection = getConnection(UUID_LINK + playerName);
-                if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
-                    BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
-                    String line = reader.readLine();
-                    if (line != null && !line.equals("null")) {
-                        JSONObject userData = (JSONObject) JSONValue.parseWithException(line);
-                        String uuid = (String) userData.get("id");
-                        return parseId(uuid);
-                    }
-                }
-                //204 - no content for not found
-            } catch (Exception ex) {
-                plugin.getLogger().log(Level.SEVERE, "Failed to check if player has a paid account", ex);
-            }
-            //this connection doesn't need to be closed. So can make use of keep alive in java
-        }
-
-        return null;
-    }
-
-    public boolean hasJoinedServer(PlayerSession session, String serverId) {
-        try {
-            String url = HAS_JOINED_URL + "username=" + session.getUsername() + "&serverId=" + serverId;
-            HttpURLConnection conn = getConnection(url);
-
-            BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
-            String line = reader.readLine();
-            if (line != null && !line.equals("null")) {
-                //validate parsing
-                //http://wiki.vg/Protocol_Encryption#Server
-                JSONObject userData = (JSONObject) JSONValue.parseWithException(line);
-                String uuid = (String) userData.get("id");
-                session.setUuid(parseId(uuid));
-
-                JSONArray properties = (JSONArray) userData.get("properties");
-                JSONObject skinProperty = (JSONObject) properties.get(0);
-
-                String propertyName = (String) skinProperty.get("name");
-                if (propertyName.equals("textures")) {
-                    String skinValue = (String) skinProperty.get("value");
-                    String signature = (String) skinProperty.get("signature");
-                    session.setSkin(WrappedSignedProperty.fromValues(propertyName, skinValue, signature));
-                }
-
-                return true;
-            }
-        } catch (Exception ex) {
-            //catch not only ioexceptions also parse and NPE on unexpected json format
-            plugin.getLogger().log(Level.WARNING, "Failed to verify session", ex);
-        }
-
-        //this connection doesn't need to be closed. So can make use of keep alive in java
-        return false;
-    }
-
-    private UUID parseId(String withoutDashes) {
-        return UUID.fromString(withoutDashes.substring(0, 8)
-                + "-" + withoutDashes.substring(8, 12)
-                + "-" + withoutDashes.substring(12, 16)
-                + "-" + withoutDashes.substring(16, 20)
-                + "-" + withoutDashes.substring(20, 32));
-    }
-
-    private HttpURLConnection getConnection(String url) throws IOException {
-        HttpURLConnection connection = (HttpURLConnection) new URL(url).openConnection();
-        connection.setConnectTimeout(TIMEOUT);
-        connection.setReadTimeout(TIMEOUT);
-        //the new Mojang API just uses json as response
-        connection.setRequestProperty("Content-Type", "application/json");
-        connection.setRequestProperty("User-Agent", USER_AGENT);
-
-        return connection;
-    }
-}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/PlayerProfile.java

@@ -1,78 +0,0 @@
-package com.github.games647.fastlogin.bukkit;
-
-import java.util.UUID;
-
-public class PlayerProfile {
-
-    private final String playerName;
-
-    private long userId;
-
-    private UUID uuid;
-    private boolean premium;
-    private String lastIp;
-    private long lastLogin;
-
-    public PlayerProfile(long userId, UUID uuid, String playerName, boolean premium
-            , String lastIp, long lastLogin) {
-        this.userId = userId;
-        this.uuid = uuid;
-        this.playerName = playerName;
-        this.premium = premium;
-        this.lastIp = lastIp;
-        this.lastLogin = lastLogin;
-    }
-
-    public PlayerProfile(UUID uuid, String playerName, boolean premium, String lastIp) {
-        this.userId = -1;
-
-        this.uuid = uuid;
-        this.playerName = playerName;
-        this.premium = premium;
-        this.lastIp = lastIp;
-    }
-
-    public String getPlayerName() {
-        return playerName;
-    }
-
-    public synchronized long getUserId() {
-        return userId;
-    }
-
-    protected synchronized void setUserId(long generatedId) {
-        this.userId = generatedId;
-    }
-
-    public synchronized UUID getUuid() {
-        return uuid;
-    }
-
-    public synchronized void setUuid(UUID uuid) {
-        this.uuid = uuid;
-    }
-
-    public synchronized boolean isPremium() {
-        return premium;
-    }
-
-    public synchronized void setPremium(boolean premium) {
-        this.premium = premium;
-    }
-
-    public synchronized String getLastIp() {
-        return lastIp;
-    }
-
-    public synchronized void setLastIp(String lastIp) {
-        this.lastIp = lastIp;
-    }
-
-    public synchronized long getLastLogin() {
-        return lastLogin;
-    }
-
-    public synchronized void setLastLogin(long lastLogin) {
-        this.lastLogin = lastLogin;
-    }
-}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/Storage.java

@@ -1,201 +0,0 @@
-package com.github.games647.fastlogin.bukkit;
-
-import com.comphenix.protocol.utility.SafeCacheBuilder;
-import com.google.common.cache.CacheLoader;
-import com.zaxxer.hikari.HikariConfig;
-import com.zaxxer.hikari.HikariDataSource;
-
-import java.sql.Connection;
-import java.sql.PreparedStatement;
-import java.sql.ResultSet;
-import java.sql.SQLException;
-import java.sql.Statement;
-import java.util.UUID;
-import java.util.concurrent.ConcurrentMap;
-import java.util.concurrent.TimeUnit;
-import java.util.logging.Level;
-
-public class Storage {
-
-    private static final String PREMIUM_TABLE = "premium";
-
-    private final ConcurrentMap<String, PlayerProfile> profileCache = SafeCacheBuilder
-            .<String, PlayerProfile>newBuilder()
-            .concurrencyLevel(20)
-            .expireAfterAccess(30, TimeUnit.MINUTES)
-            .build(new CacheLoader<String, PlayerProfile>() {
-                @Override
-                public PlayerProfile load(String key) throws Exception {
-                    //should be fetched manually
-                    throw new UnsupportedOperationException("Not supported yet.");
-                }
-            });
-
-    private final HikariDataSource dataSource;
-    private final FastLoginBukkit plugin;
-
-    public Storage(FastLoginBukkit plugin, String driver, String host, int port, String databasePath
-            , String user, String pass) {
-        this.plugin = plugin;
-
-        HikariConfig databaseConfig = new HikariConfig();
-        databaseConfig.setUsername(user);
-        databaseConfig.setPassword(pass);
-        databaseConfig.setDriverClassName(driver);
-
-        databasePath = databasePath.replace("{pluginDir}", plugin.getDataFolder().getAbsolutePath());
-
-        String jdbcUrl = "jdbc:";
-        if (driver.contains("sqlite")) {
-            jdbcUrl += "sqlite" + "://" + databasePath;
-            databaseConfig.setConnectionTestQuery("SELECT 1");
-        } else {
-            jdbcUrl += "mysql" + "://" + host + ':' + port + '/' + databasePath;
-        }
-
-        databaseConfig.setJdbcUrl(jdbcUrl);
-        this.dataSource = new HikariDataSource(databaseConfig);
-    }
-
-    public void createTables() throws SQLException {
-        Connection con = null;
-        try {
-            con = dataSource.getConnection();
-            Statement statement = con.createStatement();
-            String createDataStmt = "CREATE TABLE IF NOT EXISTS " + PREMIUM_TABLE + " ("
-                    + "`UserID` INTEGER PRIMARY KEY AUTO_INCREMENT, "
-                    + "`UUID` CHAR(36), "
-                    + "`Name` VARCHAR(16) NOT NULL, "
-                    + "`Premium` BOOLEAN NOT NULL, "
-                    + "`LastIp` VARCHAR(255) NOT NULL, "
-                    + "`LastLogin` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, "
-                    + "UNIQUE (`UUID`), "
-                    //the premium shouldn't steal the cracked account by changing the name
-                    + "UNIQUE (`Name`) "
-                    + ")";
-
-            if (dataSource.getJdbcUrl().contains("sqlite")) {
-                createDataStmt = createDataStmt.replace("AUTO_INCREMENT", "AUTOINCREMENT");
-            }
-
-            statement.executeUpdate(createDataStmt);
-        } finally {
-            closeQuietly(con);
-        }
-    }
-
-    public PlayerProfile getProfile(String name, boolean fetch) {
-        if (profileCache.containsKey(name)) {
-            return profileCache.get(name);
-        } else if (fetch) {
-            Connection con = null;
-            try {
-                con = dataSource.getConnection();
-                PreparedStatement loadStatement = con.prepareStatement("SELECT * FROM " + PREMIUM_TABLE
-                        + " WHERE `Name`=? LIMIT 1");
-                loadStatement.setString(1, name);
-
-                ResultSet resultSet = loadStatement.executeQuery();
-                if (resultSet.next()) {
-                    long userId = resultSet.getInt(1);
-
-                    String unparsedUUID = resultSet.getString(2);
-                    UUID uuid;
-                    if (unparsedUUID == null) {
-                        uuid = null;
-                    } else {
-                        uuid = FastLoginBukkit.parseId(unparsedUUID);
-                    }
-
-//                    String name = resultSet.getString(3);
-                    boolean premium = resultSet.getBoolean(4);
-                    String lastIp = resultSet.getString(5);
-                    long lastLogin = resultSet.getTimestamp(6).getTime();
-                    PlayerProfile playerProfile = new PlayerProfile(userId, uuid, name, premium, lastIp, lastLogin);
-                    profileCache.put(name, playerProfile);
-                    return playerProfile;
-                } else {
-                    PlayerProfile crackedProfile = new PlayerProfile(null, name, false, "");
-                    profileCache.put(name, crackedProfile);
-                    return crackedProfile;
-                }
-            } catch (SQLException sqlEx) {
-                plugin.getLogger().log(Level.SEVERE, "Failed to query profile", sqlEx);
-            } finally {
-                closeQuietly(con);
-            }
-        }
-
-        return null;
-    }
-
-    public boolean save(PlayerProfile playerProfile) {
-        Connection con = null;
-        try {
-            con = dataSource.getConnection();
-
-            UUID uuid = playerProfile.getUuid();
-
-            if (playerProfile.getUserId() == -1) {
-                PreparedStatement saveStatement = con.prepareStatement("INSERT INTO " + PREMIUM_TABLE
-                        + " (UUID, Name, Premium, LastIp) VALUES (?, ?, ?, ?)", Statement.RETURN_GENERATED_KEYS);
-
-                if (uuid == null) {
-                    saveStatement.setString(1, null);
-                } else {
-                    saveStatement.setString(1, uuid.toString().replace("-", ""));
-                }
-
-                saveStatement.setString(2, playerProfile.getPlayerName());
-                saveStatement.setBoolean(3, playerProfile.isPremium());
-                saveStatement.setString(4, playerProfile.getLastIp());
-                saveStatement.execute();
-
-                ResultSet generatedKeys = saveStatement.getGeneratedKeys();
-                if (generatedKeys != null && generatedKeys.next()) {
-                    playerProfile.setUserId(generatedKeys.getInt(1));
-                }
-            } else {
-                PreparedStatement saveStatement = con.prepareStatement("UPDATE " + PREMIUM_TABLE
-                        + " SET UUID=?, Name=?, Premium=?, LastIp=?, LastLogin=CURRENT_TIMESTAMP WHERE UserID=?");
-
-                if (uuid == null) {
-                    saveStatement.setString(1, null);
-                } else {
-                    saveStatement.setString(1, uuid.toString().replace("-", ""));
-                }
-
-                saveStatement.setString(2, playerProfile.getPlayerName());
-                saveStatement.setBoolean(3, playerProfile.isPremium());
-                saveStatement.setString(4, playerProfile.getLastIp());
-//                saveStatement.setTimestamp(5, new Timestamp(playerProfile.getLastLogin()));
-
-                saveStatement.setLong(5, playerProfile.getUserId());
-                saveStatement.execute();
-            }
-
-            return true;
-        } catch (SQLException ex) {
-            plugin.getLogger().log(Level.SEVERE, "Failed to save playerProfile", ex);
-        } finally {
-            closeQuietly(con);
-        }
-
-        return false;
-    }
-
-    public void close() {
-        dataSource.close();
-        profileCache.clear();
-    }
-
-    private void closeQuietly(Connection con) {
-        if (con != null) {
-            try {
-                con.close();
-            } catch (SQLException sqlEx) {
-                plugin.getLogger().log(Level.SEVERE, "Failed to close connection", sqlEx);
-            }
-        }
-    }
-}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/commands/CrackedCommand.java

@@ -1,12 +1,11 @@
 package com.github.games647.fastlogin.bukkit.commands;
 
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
-import com.github.games647.fastlogin.bukkit.PlayerProfile;
+import com.github.games647.fastlogin.core.PlayerProfile;
 import com.google.common.io.ByteArrayDataOutput;
 import com.google.common.io.ByteStreams;
 
 import org.bukkit.Bukkit;
-import org.bukkit.ChatColor;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandExecutor;
 import org.bukkit.command.CommandSender;
@@ -25,72 +24,82 @@ public class CrackedCommand implements CommandExecutor {
         if (args.length == 0) {
             if (!(sender instanceof Player)) {
                 //console or command block
-                sender.sendMessage(ChatColor.DARK_RED + "Only players can remove themselves from the premium list");
+                sender.sendMessage(plugin.getCore().getMessage("no-console"));
                 return true;
             }
 
             if (plugin.isBungeeCord()) {
                 notifiyBungeeCord(sender, sender.getName());
-                sender.sendMessage(ChatColor.YELLOW + "Sending request...");
+                String message = plugin.getCore().getMessage("wait-on-proxy");
+                if (message != null) {
+                    sender.sendMessage(message);
+                }
             } else {
-                //todo: load async if it's not in the cache anymore
-                final PlayerProfile profile = plugin.getStorage().getProfile(sender.getName(), true);
+                //todo: load async if
+                final PlayerProfile profile = plugin.getCore().getStorage().loadProfile(sender.getName());
                 if (profile.isPremium()) {
-                    sender.sendMessage(ChatColor.DARK_GREEN + "Removed from the list of premium players");
+                    sender.sendMessage(plugin.getCore().getMessage("remove-premium"));
                     profile.setPremium(false);
                     profile.setUuid(null);
                     Bukkit.getScheduler().runTaskAsynchronously(plugin, new Runnable() {
                         @Override
                         public void run() {
-                            plugin.getStorage().save(profile);
+                            plugin.getCore().getStorage().save(profile);
                         }
                     });
                 } else {
-                    sender.sendMessage(ChatColor.DARK_RED + "You are not in the premium list");
+                    sender.sendMessage(plugin.getCore().getMessage("not-premium"));
                 }
             }
 
             return true;
         } else {
-            if (!sender.hasPermission(command.getPermission() + ".other")) {
-                sender.sendMessage(ChatColor.DARK_RED + "Not enough permissions");
-                return true;
-            }
-
-            if (plugin.isBungeeCord()) {
-                notifiyBungeeCord(sender, args[0]);
-                sender.sendMessage(ChatColor.YELLOW + "Sending request for player " + args[0] + "...");
-            } else {
-                //todo: load async if it's not in the cache anymore
-                final PlayerProfile profile = plugin.getStorage().getProfile(args[0], true);
-                if (profile == null) {
-                    sender.sendMessage(ChatColor.DARK_RED + "Player not in the database");
-                    return true;
-                }
-
-                if (profile.isPremium()) {
-                    sender.sendMessage(ChatColor.DARK_GREEN + "Removed from the list of premium players");
-                    profile.setPremium(false);
-                    profile.setUuid(null);
-                    Bukkit.getScheduler().runTaskAsynchronously(plugin, new Runnable() {
-                        @Override
-                        public void run() {
-                            plugin.getStorage().save(profile);
-                        }
-                    });
-                } else {
-                    sender.sendMessage(ChatColor.DARK_RED + "Player is not in the premium list");
-                }
-            }
+            onCrackedOther(sender, command, args);
         }
 
         return true;
     }
 
+    private void onCrackedOther(CommandSender sender, Command command, String[] args) {
+        if (!sender.hasPermission(command.getPermission() + ".other")) {
+            sender.sendMessage(plugin.getCore().getMessage("no-permission"));
+            return;
+        }
+        
+        if (plugin.isBungeeCord()) {
+            notifiyBungeeCord(sender, args[0]);
+            String message = plugin.getCore().getMessage("wait-on-proxy");
+            if (message != null) {
+                sender.sendMessage(message);
+            }
+        } else {
+            //todo: load async
+            final PlayerProfile profile = plugin.getCore().getStorage().loadProfile(args[0]);
+            if (profile == null) {
+                sender.sendMessage(plugin.getCore().getMessage("player-unknown"));
+                return;
+            }
+
+            if (profile.isPremium()) {
+                sender.sendMessage(plugin.getCore().getMessage("remove-premium"));
+                profile.setPremium(false);
+                Bukkit.getScheduler().runTaskAsynchronously(plugin, new Runnable() {
+                    @Override
+                    public void run() {
+                        plugin.getCore().getStorage().save(profile);
+                    }
+                });
+            } else {
+                sender.sendMessage(plugin.getCore().getMessage("not-premium-other"));
+            }
+        }
+    }
+
     private void notifiyBungeeCord(CommandSender sender, String target) {
         if (sender instanceof Player) {
-            notifiyBungeeCord(sender, target);
+            notifiyBungeeCord((Player) sender, target);
         } else {
+            plugin.getLogger().info("No player online to send a plugin message to the proxy");
             //todo: add console support
 //            Player firstPlayer = Iterables.getFirst(Bukkit.getOnlinePlayers(), null);
 //            notifiyBungeeCord(firstPlayer, target);
@@ -103,7 +112,7 @@ public class CrackedCommand implements CommandExecutor {
             dataOutput.writeUTF("OFF");
             dataOutput.writeUTF(target);
 
-            plugin.getLogger().info("No player online to send a plugin message to the proxy");
+            sender.sendPluginMessage(plugin, plugin.getName(), dataOutput.toByteArray());
         }
     }
 }

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/commands/PremiumCommand.java

@@ -1,12 +1,13 @@
 package com.github.games647.fastlogin.bukkit.commands;
 
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
-import com.github.games647.fastlogin.bukkit.PlayerProfile;
+import com.github.games647.fastlogin.core.PlayerProfile;
 import com.google.common.io.ByteArrayDataOutput;
 import com.google.common.io.ByteStreams;
 
+import java.util.UUID;
+
 import org.bukkit.Bukkit;
-import org.bukkit.ChatColor;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandExecutor;
 import org.bukkit.command.CommandSender;
@@ -30,74 +31,93 @@ public class PremiumCommand implements CommandExecutor {
         if (args.length == 0) {
             if (!(sender instanceof Player)) {
                 //console or command block
-                sender.sendMessage(ChatColor.DARK_RED + "Only players can add themselves as premium");
+                sender.sendMessage(plugin.getCore().getMessage("no-console"));
                 return true;
             }
 
             if (plugin.isBungeeCord()) {
                 notifiyBungeeCord(sender, sender.getName());
-                sender.sendMessage(ChatColor.YELLOW + "Sending request...");
+                String message = plugin.getCore().getMessage("wait-on-proxy");
+                if (message != null) {
+                    sender.sendMessage(message);
+                }
             } else {
-//            //todo: load async if it's not in the cache anymore
-                final PlayerProfile profile = plugin.getStorage().getProfile(sender.getName(), true);
+                UUID id = ((Player) sender).getUniqueId();
+                if (plugin.getConfig().getBoolean("premium-warning") && !plugin.getPendingConfirms().contains(id)) {
+                    sender.sendMessage(plugin.getCore().getMessage("premium-warning"));
+                    plugin.getPendingConfirms().add(id);
+                    return true;
+                }
+
+                plugin.getPendingConfirms().remove(id);
+                //todo: load async
+                final PlayerProfile profile = plugin.getCore().getStorage().loadProfile(sender.getName());
                 if (profile.isPremium()) {
-                    sender.sendMessage(ChatColor.DARK_RED + "You are already on the premium list");
+                    sender.sendMessage(plugin.getCore().getMessage("already-exists"));
                 } else {
                     //todo: resolve uuid
                     profile.setPremium(true);
                     Bukkit.getScheduler().runTaskAsynchronously(plugin, new Runnable() {
                         @Override
                         public void run() {
-                            plugin.getStorage().save(profile);
+                            plugin.getCore().getStorage().save(profile);
                         }
                     });
 
-                    sender.sendMessage(ChatColor.DARK_GREEN + "Added to the list of premium players");
+                    sender.sendMessage(plugin.getCore().getMessage("add-premium"));
                 }
             }
 
             return true;
         } else {
-            if (!sender.hasPermission(command.getPermission() + ".other")) {
-                sender.sendMessage(ChatColor.DARK_RED + "Not enough permissions");
-                return true;
-            }
-
-            if (plugin.isBungeeCord()) {
-                notifiyBungeeCord(sender, args[0]);
-                sender.sendMessage(ChatColor.YELLOW + "Sending request...");
-            } else {
-                //todo: load async if it's not in the cache anymore
-                final PlayerProfile profile = plugin.getStorage().getProfile(args[0], true);
-                if (profile == null) {
-                    sender.sendMessage(ChatColor.DARK_RED + "Player not in the database");
-                    return true;
-                }
-
-                if (profile.isPremium()) {
-                    sender.sendMessage(ChatColor.DARK_RED + "Player is already on the premium list");
-                } else {
-                    //todo: resolve uuid
-                    profile.setPremium(true);
-                    Bukkit.getScheduler().runTaskAsynchronously(plugin, new Runnable() {
-                        @Override
-                        public void run() {
-                            plugin.getStorage().save(profile);
-                        }
-                    });
-
-                    sender.sendMessage(ChatColor.DARK_GREEN + "Added to the list of premium players");
-                }
-            }
+            onPremiumOther(sender, command, args);
         }
 
         return true;
     }
 
+    private void onPremiumOther(CommandSender sender, Command command, String[] args) {
+        if (!sender.hasPermission(command.getPermission() + ".other")) {
+            sender.sendMessage(plugin.getCore().getMessage("no-permission"));
+            return ;
+        }
+
+        if (plugin.isBungeeCord()) {
+            notifiyBungeeCord(sender, args[0]);
+            String message = plugin.getCore().getMessage("wait-on-proxy");
+            if (message != null) {
+                sender.sendMessage(message);
+            }
+        } else {
+            //todo: load async
+            final PlayerProfile profile = plugin.getCore().getStorage().loadProfile(args[0]);
+            if (profile == null) {
+                sender.sendMessage(plugin.getCore().getMessage("player-unknown"));
+                return;
+            }
+            
+            if (profile.isPremium()) {
+                sender.sendMessage(plugin.getCore().getMessage("already-exists-other"));
+            } else {
+                //todo: resolve uuid
+                profile.setPremium(true);
+                Bukkit.getScheduler().runTaskAsynchronously(plugin, new Runnable() {
+                    @Override
+                    public void run() {
+                        plugin.getCore().getStorage().save(profile);
+                    }
+                });
+
+                sender.sendMessage(plugin.getCore().getMessage("add-premium-other"));
+            }
+        }
+    }
+
     private void notifiyBungeeCord(CommandSender sender, String target) {
         if (sender instanceof Player) {
-            notifiyBungeeCord(sender, target);
+            notifiyBungeeCord((Player) sender, target);
         } else {
+            plugin.getLogger().info("No player online to send a plugin message to the proxy");
             //todo: add console support
 //            Player firstPlayer = Iterables.getFirst(Bukkit.getOnlinePlayers(), null);
 //            notifiyBungeeCord(firstPlayer, target);

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/hooks/AuthMeHook.java

@@ -30,9 +30,7 @@ public class AuthMeHook implements BukkitAuthPlugin {
         } else {
             API.forceLogin(player);
         }
-
-        //commented because the operation above is performed async -> race conditions
-//        return NewAPI.getInstance().isAuthenticated(player);
+        
         return true;
     }
 

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/hooks/CrazyLoginHook.java

@@ -1,18 +1,17 @@
 package com.github.games647.fastlogin.bukkit.hooks;
 
-import com.comphenix.protocol.reflect.FuzzyReflection;
-
 import de.st_ddt.crazylogin.CrazyLogin;
 import de.st_ddt.crazylogin.data.LoginPlayerData;
 import de.st_ddt.crazylogin.databases.CrazyLoginDataDatabase;
 import de.st_ddt.crazylogin.listener.PlayerListener;
 import de.st_ddt.crazylogin.metadata.Authenticated;
+
 import java.util.concurrent.Callable;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Future;
-
 import java.util.logging.Level;
 
+import org.apache.commons.lang.reflect.FieldUtils;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 
@@ -108,7 +107,7 @@ public class CrazyLoginHook implements BukkitAuthPlugin {
     private PlayerListener getListener() {
         PlayerListener listener;
         try {
-            listener = FuzzyReflection.getFieldValue(crazyLoginPlugin, PlayerListener.class, true);
+            listener = (PlayerListener) FieldUtils.readField(crazyLoginPlugin, "playerListener", true);
         } catch (Exception ex) {
             crazyLoginPlugin.getLogger().log(Level.SEVERE, "Failed to get the listener instance for auto login", ex);
             listener = null;

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/hooks/FakePlayer.java

@@ -7,6 +7,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.UUID;
+
 import org.bukkit.Achievement;
 import org.bukkit.Effect;
 import org.bukkit.EntityEffect;
@@ -1423,4 +1424,34 @@ public class FakePlayer implements Player {
     public boolean isCollidable() {
         throw new UnsupportedOperationException("Not supported yet.");
     }
+
+    @Override
+    public void stopSound(Sound sound) {
+        throw new UnsupportedOperationException("Not supported yet.");
+    }
+
+    @Override
+    public void stopSound(String sound) {
+        throw new UnsupportedOperationException("Not supported yet.");
+    }
+
+    @Override
+    public boolean isSilent() {
+        throw new UnsupportedOperationException("Not supported yet.");
+    }
+
+    @Override
+    public void setSilent(boolean flag) {
+        throw new UnsupportedOperationException("Not supported yet.");
+    }
+
+    @Override
+    public boolean hasGravity() {
+        throw new UnsupportedOperationException("Not supported yet.");
+    }
+
+    @Override
+    public void setGravity(boolean gravity) {
+        throw new UnsupportedOperationException("Not supported yet.");
+    }
 }

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/hooks/LoginSecurityHook.java

@@ -1,36 +1,78 @@
 package com.github.games647.fastlogin.bukkit.hooks;
 
+import com.avaje.ebeaninternal.api.ClassUtil;
+import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
 import com.google.common.base.Charsets;
-import com.lenis0012.bukkit.ls.LoginSecurity;
+import com.lenis0012.bukkit.loginsecurity.LoginSecurity;
+import com.lenis0012.bukkit.loginsecurity.session.AuthService;
+import com.lenis0012.bukkit.loginsecurity.session.PlayerSession;
+import com.lenis0012.bukkit.loginsecurity.session.action.LoginAction;
+import com.lenis0012.bukkit.loginsecurity.session.action.RegisterAction;
 import com.lenis0012.bukkit.ls.data.DataManager;
 
 import java.net.InetAddress;
-
 import java.util.UUID;
 import java.util.concurrent.Callable;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Future;
 import java.util.logging.Level;
-import org.bukkit.Bukkit;
 
+import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 
 /**
  * Github: https://github.com/lenis0012/LoginSecurity-2 Project page:
  *
- * Bukkit: http://dev.bukkit.org/bukkit-plugins/loginsecurity/ Spigot:
- * https://www.spigotmc.org/resources/loginsecurity.19362/
- *
- * on join:
- * https://github.com/lenis0012/LoginSecurity-2/blob/master/src/main/java/com/lenis0012/bukkit/ls/LoginSecurity.java#L282
+ * Bukkit: http://dev.bukkit.org/bukkit-plugins/loginsecurity/
+ * Spigot: https://www.spigotmc.org/resources/loginsecurity.19362/
  */
 public class LoginSecurityHook implements BukkitAuthPlugin {
 
-    protected final LoginSecurity securityPlugin = LoginSecurity.instance;
+    protected final com.lenis0012.bukkit.ls.LoginSecurity securityPlugin;
+    protected final FastLoginBukkit plugin = (FastLoginBukkit) Bukkit.getPluginManager().getPlugin("FastLogin");
+    protected final boolean newVersion;
+
+    public LoginSecurityHook() {
+        this.newVersion = ClassUtil.isPresent("com.lenis0012.bukkit.loginsecurity.LoginSecurity", getClass());
+        if (newVersion) {
+            this.securityPlugin = null;
+        } else {
+            this.securityPlugin = com.lenis0012.bukkit.ls.LoginSecurity.instance;
+        }
+    }
 
     @Override
-    public boolean forceLogin(final Player player) {
-        //Login command of this plugin: (How the plugin logs the player in)
+    public boolean forceLogin(Player player) {
+        if (!newVersion) {
+            return oldForceLogin(player);
+        }
+
+        PlayerSession session = LoginSecurity.getSessionManager().getPlayerSession(player);
+        return session.performAction(new LoginAction(AuthService.PLUGIN, plugin)).isSuccess();
+    }
+
+    @Override
+    public boolean isRegistered(String playerName) throws Exception {
+        if (!newVersion) {
+            return oldIsRegistred(playerName);
+        }
+
+        PlayerSession session = LoginSecurity.getSessionManager().getOfflineSession(playerName);
+        return session.isRegistered();
+    }
+
+    @Override
+    public boolean forceRegister(Player player, String password) {
+        if (!newVersion) {
+            return oldForceRegister(player, password);
+        }
+
+        PlayerSession session = LoginSecurity.getSessionManager().getPlayerSession(player);
+        return session.performAction(new RegisterAction(AuthService.PLUGIN, plugin, password)).isSuccess();
+    }
+
+    public boolean oldForceLogin(final Player player) {
+//Login command of this plugin: (How the plugin logs the player in)
         //https://github.com/lenis0012/LoginSecurity-2/blob/master/src/main/java/com/lenis0012/bukkit/ls/commands/LoginCommand.java#L39
 
         //not thread-safe operation
@@ -58,20 +100,16 @@ public class LoginSecurityHook implements BukkitAuthPlugin {
         }
     }
 
-    @Override
-    public boolean isRegistered(String playerName) throws Exception {
+    public boolean oldIsRegistred(String playerName) throws Exception {
         //https://github.com/lenis0012/LoginSecurity-2/blob/master/src/main/java/com/lenis0012/bukkit/ls/LoginSecurity.java#L296
         DataManager dataManager = securityPlugin.data;
 
         //https://github.com/lenis0012/LoginSecurity-2/blob/master/src/main/java/com/lenis0012/bukkit/ls/LoginSecurity.java#L283
         UUID offlineUuid = UUID.nameUUIDFromBytes(("OfflinePlayer:" + playerName).getBytes(Charsets.UTF_8));
         return dataManager.isRegistered(offlineUuid.toString().replace("-", ""));
-        //check for loginsecurity sessions in order to prevent a sql query?
-        //sesUse && thread.getSession().containsKey(uuid) && checkLastIp(player)) {
     }
 
-    @Override
-    public boolean forceRegister(final Player player, final String password) {
+    public boolean oldForceRegister(Player player, String password) {
         DataManager dataManager = securityPlugin.data;
 
         UUID playerUUID = player.getUniqueId();

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/hooks/UltraAuthHook.java

@@ -6,7 +6,6 @@ import java.util.concurrent.Future;
 import java.util.logging.Level;
 
 import org.bukkit.Bukkit;
-
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.Plugin;
 

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/BukkitJoinListener.java

@@ -1,10 +1,7 @@
 package com.github.games647.fastlogin.bukkit.listener;
 
-import com.comphenix.protocol.wrappers.WrappedGameProfile;
-import com.comphenix.protocol.wrappers.WrappedSignedProperty;
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
-import com.github.games647.fastlogin.bukkit.ForceLoginTask;
-import com.github.games647.fastlogin.bukkit.PlayerSession;
+import com.github.games647.fastlogin.bukkit.tasks.ForceLoginTask;
 
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
@@ -33,7 +30,7 @@ public class BukkitJoinListener implements Listener {
     @EventHandler(priority = EventPriority.LOWEST)
     public void onPlayerLogin(PlayerLoginEvent loginEvent) {
         if (loginEvent.getResult() == Result.ALLOWED && !plugin.isServerFullyStarted()) {
-            loginEvent.disallow(Result.KICK_OTHER, "§cServer is not fully started yet. Please retry");
+            loginEvent.disallow(Result.KICK_OTHER, plugin.getCore().getMessage("not-started"));
         }
     }
 
@@ -41,16 +38,6 @@ public class BukkitJoinListener implements Listener {
     public void onPlayerJoin(PlayerJoinEvent joinEvent) {
         Player player = joinEvent.getPlayer();
 
-        //removing the session because we now use it
-        PlayerSession session = plugin.getSessions().get(player.getAddress().toString());
-        if (session != null && plugin.getConfig().getBoolean("forwardSkin")) {
-            WrappedGameProfile gameProfile = WrappedGameProfile.fromPlayer(player);
-            WrappedSignedProperty skin = session.getSkin();
-            if (skin != null) {
-                gameProfile.getProperties().put("textures", skin);
-            }
-        }
-
         if (!plugin.isBungeeCord()) {
             //Wait before auth plugin and we received a message from BungeeCord initializes the player
             Bukkit.getScheduler().runTaskLaterAsynchronously(plugin, new ForceLoginTask(plugin, player), DELAY_LOGIN);
@@ -60,8 +47,7 @@ public class BukkitJoinListener implements Listener {
     @EventHandler
     public void onPlayerQuit(PlayerQuitEvent quitEvent) {
         Player player = quitEvent.getPlayer();
-
-        //prevent memory leaks
         player.removeMetadata(plugin.getName(), plugin);
+        plugin.getPendingConfirms().remove(player.getUniqueId());
     }
 }

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/BungeeCordListener.java

@@ -1,16 +1,19 @@
 package com.github.games647.fastlogin.bukkit.listener;
 
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
-import com.github.games647.fastlogin.bukkit.ForceLoginTask;
-import com.github.games647.fastlogin.bukkit.PlayerSession;
+import com.github.games647.fastlogin.bukkit.tasks.ForceLoginTask;
+import com.github.games647.fastlogin.bukkit.BukkitLoginSession;
 import com.github.games647.fastlogin.bukkit.hooks.BukkitAuthPlugin;
 import com.google.common.base.Charsets;
+import com.google.common.collect.Sets;
 import com.google.common.io.ByteArrayDataInput;
 import com.google.common.io.ByteStreams;
 import com.google.common.io.Files;
 
 import java.io.File;
 import java.io.IOException;
+import java.util.List;
+import java.util.Set;
 import java.util.UUID;
 import java.util.logging.Level;
 
@@ -31,15 +34,15 @@ public class BungeeCordListener implements PluginMessageListener {
 
     protected final FastLoginBukkit plugin;
     //null if whitelist is empty so bungeecord support is disabled
-    private final UUID proxyId;
+    private final Set<UUID> proxyIds;
 
     public BungeeCordListener(FastLoginBukkit plugin) {
         this.plugin = plugin;
-        this.proxyId = loadBungeeCordId();
+        this.proxyIds = loadBungeeCordIds();
     }
 
     @Override
-    public void onPluginMessageReceived(String channel, Player player, byte[] message) {
+    public void onPluginMessageReceived(String channel, final Player player, byte[] message) {
         if (!channel.equals(plugin.getName())) {
             return;
         }
@@ -65,25 +68,26 @@ public class BungeeCordListener implements PluginMessageListener {
             plugin.getLogger().log(Level.FINEST, "Received proxy id {0} from {1}", new Object[]{sourceId, player});
 
             //fail if BungeeCord support is disabled (id = null)
-            if (sourceId.equals(proxyId)) {
-                final PlayerSession playerSession = new PlayerSession(playerName);
+            if (proxyIds.contains(sourceId)) {
                 final String id = '/' + checkedPlayer.getAddress().getAddress().getHostAddress() + ':'
                         + checkedPlayer.getAddress().getPort();
                 if ("AUTO_LOGIN".equalsIgnoreCase(subchannel)) {
+                    BukkitLoginSession playerSession = new BukkitLoginSession(playerName, true);
                     playerSession.setVerified(true);
-                    playerSession.setRegistered(true);
                     plugin.getSessions().put(id, playerSession);
+                    Bukkit.getScheduler().runTaskAsynchronously(plugin, new ForceLoginTask(plugin, player));
                 } else if ("AUTO_REGISTER".equalsIgnoreCase(subchannel)) {
-                    playerSession.setVerified(true);
-
                     Bukkit.getScheduler().runTaskAsynchronously(plugin, new Runnable() {
                         @Override
                         public void run() {
                             BukkitAuthPlugin authPlugin = plugin.getAuthPlugin();
                             try {
                                 //we need to check if the player is registered on Bukkit too
-                                if (authPlugin != null && !authPlugin.isRegistered(playerName)) {
+                                if (authPlugin == null || !authPlugin.isRegistered(playerName)) {
+                                    BukkitLoginSession playerSession = new BukkitLoginSession(playerName, false);
+                                    playerSession.setVerified(true);
                                     plugin.getSessions().put(id, playerSession);
+                                    new ForceLoginTask(plugin, player).run();
                                 }
                             } catch (Exception ex) {
                                 plugin.getLogger().log(Level.SEVERE, "Failed to query isRegistered", ex);
@@ -91,13 +95,11 @@ public class BungeeCordListener implements PluginMessageListener {
                         }
                     });
                 }
-
-                Bukkit.getScheduler().runTaskAsynchronously(plugin, new ForceLoginTask(plugin, player));
             }
         }
     }
 
-    public UUID loadBungeeCordId() {
+    public Set<UUID> loadBungeeCordIds() {
         File whitelistFile = new File(plugin.getDataFolder(), FILE_NAME);
         //create a new folder if it doesn't exist. Fail silently otherwise
         whitelistFile.getParentFile().mkdir();
@@ -106,10 +108,19 @@ public class BungeeCordListener implements PluginMessageListener {
                 whitelistFile.createNewFile();
             }
 
-            String firstLine = Files.readFirstLine(whitelistFile, Charsets.UTF_8);
-            if (firstLine != null && !firstLine.isEmpty()) {
-                return UUID.fromString(firstLine.trim());
+            Set<UUID> ids = Sets.newHashSet();
+
+            List<String> lines = Files.readLines(whitelistFile, Charsets.UTF_8);
+            for (String line : lines) {
+                if (line == null || line.trim().isEmpty()) {
+                    continue;
+                }
+
+                UUID uuid = UUID.fromString(line.trim());
+                ids.add(uuid);
             }
+
+            return ids;
         } catch (IOException ex) {
             plugin.getLogger().log(Level.SEVERE, "Failed to create file for Proxy whitelist", ex);
         } catch (Exception ex) {

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/ProtocolSupportListener.java

@@ -1,89 +0,0 @@
-package com.github.games647.fastlogin.bukkit.listener;
-
-import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
-import com.github.games647.fastlogin.bukkit.PlayerProfile;
-import com.github.games647.fastlogin.bukkit.PlayerSession;
-import com.github.games647.fastlogin.bukkit.hooks.BukkitAuthPlugin;
-
-import java.net.InetSocketAddress;
-import java.util.UUID;
-import java.util.logging.Level;
-
-import org.bukkit.event.EventHandler;
-import org.bukkit.event.Listener;
-
-import protocolsupport.api.events.PlayerLoginStartEvent;
-import protocolsupport.api.events.PlayerPropertiesResolveEvent;
-
-public class ProtocolSupportListener implements Listener {
-
-    protected final FastLoginBukkit plugin;
-
-    public ProtocolSupportListener(FastLoginBukkit plugin) {
-        this.plugin = plugin;
-    }
-
-    @EventHandler(ignoreCancelled = true)
-    public void onLoginStart(PlayerLoginStartEvent loginStartEvent) {
-        plugin.setServerStarted();
-        if (loginStartEvent.isLoginDenied()) {
-            return;
-        }
-
-        String username = loginStartEvent.getName();
-
-        //remove old data every time on a new login in order to keep the session only for one person
-        plugin.getSessions().remove(username);
-
-        BukkitAuthPlugin authPlugin = plugin.getAuthPlugin();
-        if (authPlugin == null) {
-            return;
-        }
-
-        PlayerProfile playerProfile = plugin.getStorage().getProfile(username, true);
-        if (playerProfile != null) {
-            if (playerProfile.isPremium()) {
-                if (playerProfile.getUserId() != -1) {
-                    startPremiumSession(username, loginStartEvent, true);
-                }
-            } else if (playerProfile.getUserId() == -1) {
-                //user not exists in the db
-                try {
-                    if (plugin.getConfig().getBoolean("autoRegister") && !authPlugin.isRegistered(username)) {
-                        UUID premiumUUID = plugin.getApiConnector().getPremiumUUID(username);
-                        if (premiumUUID != null) {
-                            plugin.getLogger().log(Level.FINER, "Player {0} uses a premium username", username);
-                            startPremiumSession(username, loginStartEvent, false);
-                        }
-                    }
-                } catch (Exception ex) {
-                    plugin.getLogger().log(Level.SEVERE, "Failed to query isRegistered", ex);
-                }
-            }
-        }
-    }
-
-    @EventHandler(ignoreCancelled = true)
-    public void onPropertiesResolve(PlayerPropertiesResolveEvent propertiesResolveEvent) {
-        //skin was resolved -> premium player
-        if (propertiesResolveEvent.hasProperty("textures")) {
-            InetSocketAddress address = propertiesResolveEvent.getAddress();
-            PlayerSession session = plugin.getSessions().get(address.toString());
-            if (session != null) {
-                session.setVerified(true);
-            }
-        }
-    }
-
-    private void startPremiumSession(String playerName, PlayerLoginStartEvent loginStartEvent, boolean registered) {
-        loginStartEvent.setOnlineMode(true);
-        InetSocketAddress address = loginStartEvent.getAddress();
-
-        PlayerSession playerSession = new PlayerSession(playerName, null, null);
-        playerSession.setRegistered(registered);
-        plugin.getSessions().put(address.toString(), playerSession);
-        if (plugin.getConfig().getBoolean("premiumUuid")) {
-            loginStartEvent.setUseOnlineModeUUID(true);
-        }
-    }
-}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/StartPacketListener.java

@@ -1,156 +0,0 @@
-package com.github.games647.fastlogin.bukkit.listener;
-
-import com.comphenix.protocol.PacketType;
-import com.comphenix.protocol.ProtocolManager;
-import com.comphenix.protocol.events.PacketAdapter;
-import com.comphenix.protocol.events.PacketContainer;
-import com.comphenix.protocol.events.PacketEvent;
-import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
-import com.github.games647.fastlogin.bukkit.PlayerProfile;
-import com.github.games647.fastlogin.bukkit.PlayerSession;
-import com.github.games647.fastlogin.bukkit.hooks.BukkitAuthPlugin;
-
-import java.lang.reflect.InvocationTargetException;
-import java.security.PublicKey;
-import java.util.Random;
-import java.util.UUID;
-import java.util.logging.Level;
-
-import org.bukkit.entity.Player;
-
-/**
- * Handles incoming start packets from connecting clients. It
- * checks if we can start checking if the player is premium and
- * start a request to the client that it should start online mode
- * login.
- *
- * Receiving packet information:
- * http://wiki.vg/Protocol#Login_Start
- *
- * String=Username
- */
-public class StartPacketListener extends PacketAdapter {
-
-    private static final int VERIFY_TOKEN_LENGTH = 4;
-
-    private final ProtocolManager protocolManager;
-    //hides the inherit Plugin plugin field, but we need a more detailed type than just Plugin
-    private final FastLoginBukkit plugin;
-
-    //just create a new once on plugin enable. This used for verify token generation
-    private final Random random = new Random();
-
-    public StartPacketListener(FastLoginBukkit plugin, ProtocolManager protocolManger) {
-        //run async in order to not block the server, because we are making api calls to Mojang
-        super(params(plugin, PacketType.Login.Client.START).optionAsync());
-
-        this.plugin = plugin;
-        this.protocolManager = protocolManger;
-    }
-
-    /**
-     * C->S : Handshake State=2
-     * C->S : Login Start
-     * S->C : Encryption Key Request
-     * (Client Auth)
-     * C->S : Encryption Key Response
-     * (Server Auth, Both enable encryption)
-     * S->C : Login Success (*)
-     *
-     * On offline logins is Login Start followed by Login Success
-     */
-    @Override
-    public void onPacketReceiving(PacketEvent packetEvent) {
-        plugin.setServerStarted();
-
-        Player player = packetEvent.getPlayer();
-
-        //this includes ip:port. Should be unique for an incoming login request with a timeout of 2 minutes
-        String sessionKey = player.getAddress().toString();
-
-        //remove old data every time on a new login in order to keep the session only for one person
-        plugin.getSessions().remove(sessionKey);
-
-        //player.getName() won't work at this state
-        PacketContainer packet = packetEvent.getPacket();
-
-        String username = packet.getGameProfiles().read(0).getName();
-        plugin.getLogger().log(Level.FINER, "Player {0} with {1} connecting to the server"
-                , new Object[]{sessionKey, username});
-
-        BukkitAuthPlugin authPlugin = plugin.getAuthPlugin();
-        if (authPlugin == null) {
-            return;
-        }
-
-        PlayerProfile playerProfile = plugin.getStorage().getProfile(username, true);
-        if (playerProfile != null) {
-            if (playerProfile.isPremium()) {
-                if (playerProfile.getUserId() != -1) {
-                    enablePremiumLogin(username, sessionKey, player, packetEvent, true);
-                }
-            } else if (playerProfile.getUserId() == -1) {
-                //user not exists in the db
-                try {
-                    if (plugin.getConfig().getBoolean("autoRegister") && !authPlugin.isRegistered(username)) {
-                        UUID premiumUUID = plugin.getApiConnector().getPremiumUUID(username);
-                        if (premiumUUID != null) {
-                            plugin.getLogger().log(Level.FINER, "Player {0} uses a premium username", username);
-                            enablePremiumLogin(username, sessionKey, player, packetEvent, false);
-                        }
-                    }
-                } catch (Exception ex) {
-                    plugin.getLogger().log(Level.SEVERE, "Failed to query isRegistered", ex);
-                }
-            }
-        }
-    }
-
-    //minecraft server implementation
-    //https://github.com/bergerkiller/CraftSource/blob/master/net.minecraft.server/LoginListener.java#L161
-    private void enablePremiumLogin(String username, String sessionKey, Player player, PacketEvent packetEvent
-            , boolean registered) {
-        //randomized server id to make sure the request is for our server
-        //this could be relevant http://www.sk89q.com/2011/09/minecraft-name-spoofing-exploit/
-        String serverId = Long.toString(random.nextLong(), 16);
-
-        //generate a random token which should be the same when we receive it from the client
-        byte[] verifyToken = new byte[VERIFY_TOKEN_LENGTH];
-        random.nextBytes(verifyToken);
-
-        boolean success = sentEncryptionRequest(player, serverId, verifyToken);
-        if (success) {
-            PlayerSession playerSession = new PlayerSession(username, serverId, verifyToken);
-            playerSession.setRegistered(registered);
-            plugin.getSessions().put(sessionKey, playerSession);
-            //cancel only if the player has a paid account otherwise login as normal offline player
-            packetEvent.setCancelled(true);
-        }
-    }
-
-    private boolean sentEncryptionRequest(Player player, String serverId, byte[] verifyToken) {
-        try {
-            /**
-             * Packet Information: http://wiki.vg/Protocol#Encryption_Request
-             *
-             * ServerID="" (String)
-             * key=public server key
-             * verifyToken=random 4 byte array
-             */
-            PacketContainer newPacket = protocolManager.createPacket(PacketType.Login.Server.ENCRYPTION_BEGIN);
-
-            newPacket.getStrings().write(0, serverId);
-            newPacket.getSpecificModifier(PublicKey.class).write(0, plugin.getServerKey().getPublic());
-
-            newPacket.getByteArrays().write(0, verifyToken);
-
-            //serverId is a empty string
-            protocolManager.sendServerPacket(player, newPacket);
-            return true;
-        } catch (InvocationTargetException ex) {
-            plugin.getLogger().log(Level.SEVERE, "Cannot send encryption packet. Falling back to normal login", ex);
-        }
-
-        return false;
-    }
-}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/protocollib/EncryptionPacketListener.java

@@ -0,0 +1,65 @@
+package com.github.games647.fastlogin.bukkit.listener.protocollib;
+
+import com.comphenix.protocol.PacketType;
+import com.comphenix.protocol.events.PacketAdapter;
+import com.comphenix.protocol.events.PacketEvent;
+import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+
+
+/**
+ * Handles incoming encryption responses from connecting clients.
+ * It prevents them from reaching the server because that cannot handle
+ * it in offline mode.
+ *
+ * Moreover this manages a started premium check from
+ * this plugin. So check if all data is correct and we can prove him as a
+ * owner of a paid minecraft account.
+ *
+ * Receiving packet information:
+ * http://wiki.vg/Protocol#Encryption_Response
+ *
+ * sharedSecret=encrypted byte array
+ * verify token=encrypted byte array
+ */
+public class EncryptionPacketListener extends PacketAdapter {
+
+    //hides the inherit Plugin plugin field, but we need this type
+    private final FastLoginBukkit plugin;
+
+    public EncryptionPacketListener(FastLoginBukkit plugin) {
+        //run async in order to not block the server, because we make api calls to Mojang
+        super(params(plugin, PacketType.Login.Client.ENCRYPTION_BEGIN).optionAsync());
+
+        this.plugin = plugin;
+    }
+
+    /**
+     * C->S : Handshake State=2
+     * C->S : Login Start
+     * S->C : Encryption Key Request
+     * (Client Auth)
+     * C->S : Encryption Key Response
+     * (Server Auth, Both enable encryption)
+     * S->C : Login Success (*)
+     *
+     * On offline logins is Login Start followed by Login Success
+     *
+     * Minecraft Server implementation
+     * https://github.com/bergerkiller/CraftSource/blob/master/net.minecraft.server/LoginListener.java#L180
+     */
+    @Override
+    public void onPacketReceiving(PacketEvent packetEvent) {
+        if (packetEvent.isCancelled()) {
+            return;
+        }
+
+        Player sender = packetEvent.getPlayer();
+        byte[] sharedSecret = packetEvent.getPacket().getByteArrays().read(0);
+        
+        packetEvent.getAsyncMarker().incrementProcessingDelay();
+        VerifyResponseTask verifyTask = new VerifyResponseTask(plugin, packetEvent, sender, sharedSecret);
+        Bukkit.getScheduler().runTaskAsynchronously(plugin, verifyTask);
+    }
+}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/protocollib/LoginSkinApplyListener.java

@@ -0,0 +1,72 @@
+package com.github.games647.fastlogin.bukkit.listener.protocollib;
+
+import com.comphenix.protocol.reflect.accessors.Accessors;
+import com.comphenix.protocol.reflect.accessors.MethodAccessor;
+import com.comphenix.protocol.utility.MinecraftReflection;
+import com.comphenix.protocol.wrappers.WrappedGameProfile;
+import com.comphenix.protocol.wrappers.WrappedSignedProperty;
+import com.github.games647.fastlogin.bukkit.BukkitLoginSession;
+import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Collection;
+import java.util.logging.Level;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerLoginEvent;
+
+public class LoginSkinApplyListener implements Listener {
+
+    private static final Class<?> GAME_PROFILE = MinecraftReflection.getGameProfileClass();
+
+    private static final MethodAccessor GET_PROPERTIES = Accessors.getMethodAcccessorOrNull(
+            GAME_PROFILE, "getProperties");
+
+    private final FastLoginBukkit plugin;
+
+    public LoginSkinApplyListener(FastLoginBukkit plugin) {
+        this.plugin = plugin;
+    }
+
+    @EventHandler(priority = EventPriority.LOW)
+    //run this on the loginEvent to let skins plugins see the skin like in normal minecraft behaviour
+    public void onPlayerLogin(PlayerLoginEvent loginEvent) {
+        Player player = loginEvent.getPlayer();
+
+        if (plugin.getConfig().getBoolean("forwardSkin")) {
+            //go through every session, because player.getAddress is null 
+            //loginEvent.getAddress is just a InetAddress not InetSocketAddres, so not unique enough
+            Collection<BukkitLoginSession> sessions = plugin.getSessions().values();
+            for (BukkitLoginSession session : sessions) {
+                if (session.getUsername().equals(player.getName())) {
+                    applySkin(player, session);
+                    break;
+                }
+            }
+        }
+    }
+
+    private void applySkin(Player player, BukkitLoginSession session) {
+        WrappedGameProfile gameProfile = WrappedGameProfile.fromPlayer(player);
+        String skinData = session.getEncodedSkinData();
+        String signature = session.getSkinSignature();
+        if (skinData != null && signature != null) {
+            WrappedSignedProperty skin = WrappedSignedProperty.fromValues("textures", skinData, signature);
+            try {
+                gameProfile.getProperties().put("textures", skin);
+            } catch (ClassCastException castException) {
+                Object map = GET_PROPERTIES.invoke(gameProfile.getHandle());
+                try {
+                    Method putMethod = map.getClass().getMethod("put", Object.class, Object.class);
+                    putMethod.invoke(map, "textures", skin.getHandle());
+                } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException ex) {
+                    plugin.getLogger().log(Level.SEVERE, "Error setting premium skin", ex);
+                }
+            }
+        }
+    }
+}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/protocollib/NameCheckTask.java

@@ -0,0 +1,141 @@
+package com.github.games647.fastlogin.bukkit.listener.protocollib;
+
+import com.comphenix.protocol.PacketType;
+import com.comphenix.protocol.ProtocolLibrary;
+import com.comphenix.protocol.ProtocolManager;
+import com.comphenix.protocol.events.PacketContainer;
+import com.comphenix.protocol.events.PacketEvent;
+import com.github.games647.fastlogin.bukkit.BukkitLoginSession;
+import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
+import com.github.games647.fastlogin.core.PlayerProfile;
+
+import java.lang.reflect.InvocationTargetException;
+import java.security.PublicKey;
+import java.util.Random;
+import java.util.UUID;
+import java.util.logging.Level;
+
+import org.bukkit.entity.Player;
+
+public class NameCheckTask implements Runnable {
+
+    private static final int VERIFY_TOKEN_LENGTH = 4;
+
+    private final FastLoginBukkit plugin;
+    private final PacketEvent packetEvent;
+
+    private final Random random;
+
+    private final Player player;
+    private final String username;
+
+    public NameCheckTask(FastLoginBukkit plugin, PacketEvent packetEvent, Random random, Player player, String username) {
+        this.plugin = plugin;
+        this.packetEvent = packetEvent;
+        this.random = random;
+        this.player = player;
+        this.username = username;
+    }
+
+    @Override
+    public void run() {
+        try {
+            nameCheck();
+        } finally {
+            ProtocolLibrary.getProtocolManager().getAsynchronousManager().signalPacketTransmission(packetEvent);
+        }
+    }
+
+    private void nameCheck() {
+        PlayerProfile profile = plugin.getCore().getStorage().loadProfile(username);
+        if (profile == null) {
+            return;
+        }
+
+        if (profile.getUserId() == -1) {
+            UUID premiumUUID = null;
+            
+            //user not exists in the db
+            try {
+                boolean isRegistered = plugin.getAuthPlugin().isRegistered(username);
+                if (plugin.getConfig().getBoolean("nameChangeCheck")
+                        || (plugin.getConfig().getBoolean("autoRegister") && !isRegistered)) {
+                    premiumUUID = plugin.getCore().getMojangApiConnector().getPremiumUUID(username);
+                }
+
+                if (premiumUUID != null && plugin.getConfig().getBoolean("nameChangeCheck")) {
+                    PlayerProfile uuidProfile = plugin.getCore().getStorage().loadProfile(premiumUUID);
+                    if (uuidProfile != null) {
+                        plugin.getLogger().log(Level.FINER, "Player {0} changed it's username", premiumUUID);
+                        enablePremiumLogin(uuidProfile, false);
+                        return;
+                    }
+                }
+
+                if (premiumUUID != null && plugin.getConfig().getBoolean("autoRegister") && !isRegistered) {
+                    plugin.getLogger().log(Level.FINER, "Player {0} uses a premium username", username);
+                    enablePremiumLogin(profile, false);
+                    return;
+                }
+
+                //no premium check passed so we save it as a cracked player
+                BukkitLoginSession loginSession = new BukkitLoginSession(username, profile);
+                plugin.getSessions().put(player.getAddress().toString(), loginSession);
+            } catch (Exception ex) {
+                plugin.getLogger().log(Level.SEVERE, "Failed to query isRegistered", ex);
+            }
+        } else if (profile.isPremium()) {
+            enablePremiumLogin(profile, true);
+        } else {
+            BukkitLoginSession loginSession = new BukkitLoginSession(username, profile);
+            plugin.getSessions().put(player.getAddress().toString(), loginSession);
+        }
+    }
+
+    //minecraft server implementation
+    //https://github.com/bergerkiller/CraftSource/blob/master/net.minecraft.server/LoginListener.java#L161
+    private void enablePremiumLogin(PlayerProfile profile, boolean registered) {
+        //randomized server id to make sure the request is for our server
+        //this could be relevant http://www.sk89q.com/2011/09/minecraft-name-spoofing-exploit/
+        String serverId = Long.toString(random.nextLong(), 16);
+
+        //generate a random token which should be the same when we receive it from the client
+        byte[] verify = new byte[VERIFY_TOKEN_LENGTH];
+        random.nextBytes(verify);
+
+        boolean success = sentEncryptionRequest(player, serverId, verify);
+        if (success) {
+            BukkitLoginSession playerSession = new BukkitLoginSession(username, serverId, verify, registered, profile);
+            plugin.getSessions().put(player.getAddress().toString(), playerSession);
+            //cancel only if the player has a paid account otherwise login as normal offline player
+            synchronized (packetEvent.getAsyncMarker().getProcessingLock()) {
+                packetEvent.setCancelled(true);
+            }
+        }
+    }
+
+    private boolean sentEncryptionRequest(Player player, String serverId, byte[] verifyToken) {
+        ProtocolManager protocolManager = ProtocolLibrary.getProtocolManager();
+        try {
+            /**
+             * Packet Information: http://wiki.vg/Protocol#Encryption_Request
+             *
+             * ServerID="" (String) key=public server key verifyToken=random 4 byte array
+             */
+            PacketContainer newPacket = protocolManager.createPacket(PacketType.Login.Server.ENCRYPTION_BEGIN);
+
+            newPacket.getStrings().write(0, serverId);
+            newPacket.getSpecificModifier(PublicKey.class).write(0, plugin.getServerKey().getPublic());
+
+            newPacket.getByteArrays().write(0, verifyToken);
+
+            //serverId is a empty string
+            protocolManager.sendServerPacket(player, newPacket);
+            return true;
+        } catch (InvocationTargetException ex) {
+            plugin.getLogger().log(Level.SEVERE, "Cannot send encryption packet. Falling back to normal login", ex);
+        }
+
+        return false;
+    }
+}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/protocollib/StartPacketListener.java

@@ -0,0 +1,84 @@
+package com.github.games647.fastlogin.bukkit.listener.protocollib;
+
+import com.comphenix.protocol.PacketType;
+import com.comphenix.protocol.events.PacketAdapter;
+import com.comphenix.protocol.events.PacketContainer;
+import com.comphenix.protocol.events.PacketEvent;
+import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
+import com.github.games647.fastlogin.bukkit.hooks.BukkitAuthPlugin;
+
+import java.util.Random;
+import java.util.logging.Level;
+import org.bukkit.Bukkit;
+
+import org.bukkit.entity.Player;
+
+/**
+ * Handles incoming start packets from connecting clients. It
+ * checks if we can start checking if the player is premium and
+ * start a request to the client that it should start online mode
+ * login.
+ *
+ * Receiving packet information:
+ * http://wiki.vg/Protocol#Login_Start
+ *
+ * String=Username
+ */
+public class StartPacketListener extends PacketAdapter {
+
+    //hides the inherit Plugin plugin field, but we need a more detailed type than just Plugin
+    private final FastLoginBukkit plugin;
+
+    //just create a new once on plugin enable. This used for verify token generation
+    private final Random random = new Random();
+
+    public StartPacketListener(FastLoginBukkit plugin) {
+        //run async in order to not block the server, because we are making api calls to Mojang
+        super(params(plugin, PacketType.Login.Client.START).optionAsync());
+
+        this.plugin = plugin;
+    }
+
+    /**
+     * C->S : Handshake State=2
+     * C->S : Login Start
+     * S->C : Encryption Key Request
+     * (Client Auth)
+     * C->S : Encryption Key Response
+     * (Server Auth, Both enable encryption)
+     * S->C : Login Success (*)
+     *
+     * On offline logins is Login Start followed by Login Success
+     */
+    @Override
+    public void onPacketReceiving(PacketEvent packetEvent) {
+        if (packetEvent.isCancelled()) {
+            return;
+        }
+
+        plugin.setServerStarted();
+
+        Player player = packetEvent.getPlayer();
+
+        //this includes ip:port. Should be unique for an incoming login request with a timeout of 2 minutes
+        String sessionKey = player.getAddress().toString();
+
+        //remove old data every time on a new login in order to keep the session only for one person
+        plugin.getSessions().remove(sessionKey);
+
+        //player.getName() won't work at this state
+        PacketContainer packet = packetEvent.getPacket();
+
+        String username = packet.getGameProfiles().read(0).getName();
+        plugin.getLogger().log(Level.FINER, "Player {0} with {1} connecting", new Object[]{sessionKey, username});
+
+        BukkitAuthPlugin authPlugin = plugin.getAuthPlugin();
+        if (authPlugin == null) {
+            return;
+        }
+
+        packetEvent.getAsyncMarker().incrementProcessingDelay();
+        NameCheckTask nameCheckTask = new NameCheckTask(plugin, packetEvent, random, player, username);
+        Bukkit.getScheduler().runTaskAsynchronously(plugin, nameCheckTask);
+    }
+}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/protocollib/VerifyResponseTask.java

@@ -1,17 +1,17 @@
-package com.github.games647.fastlogin.bukkit.listener;
+package com.github.games647.fastlogin.bukkit.listener.protocollib;
 
 import com.comphenix.protocol.PacketType;
+import com.comphenix.protocol.ProtocolLibrary;
 import com.comphenix.protocol.ProtocolManager;
-import com.comphenix.protocol.events.PacketAdapter;
 import com.comphenix.protocol.events.PacketContainer;
 import com.comphenix.protocol.events.PacketEvent;
 import com.comphenix.protocol.injector.server.TemporaryPlayerFactory;
 import com.comphenix.protocol.reflect.FuzzyReflection;
 import com.comphenix.protocol.wrappers.WrappedChatComponent;
 import com.comphenix.protocol.wrappers.WrappedGameProfile;
+import com.github.games647.fastlogin.bukkit.BukkitLoginSession;
 import com.github.games647.fastlogin.bukkit.EncryptionUtil;
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
-import com.github.games647.fastlogin.bukkit.PlayerSession;
 
 import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
@@ -26,69 +26,42 @@ import javax.crypto.SecretKey;
 
 import org.bukkit.entity.Player;
 
-/**
- * Handles incoming encryption responses from connecting clients.
- * It prevents them from reaching the server because that cannot handle
- * it in offline mode.
- *
- * Moreover this manages a started premium check from
- * this plugin. So check if all data is correct and we can prove him as a
- * owner of a paid minecraft account.
- *
- * Receiving packet information:
- * http://wiki.vg/Protocol#Encryption_Response
- *
- * sharedSecret=encrypted byte array
- * verify token=encrypted byte array
- */
-public class EncryptionPacketListener extends PacketAdapter {
+public class VerifyResponseTask implements Runnable {
 
-    private final ProtocolManager protocolManager;
-    //hides the inherit Plugin plugin field, but we need this type
     private final FastLoginBukkit plugin;
+    private final PacketEvent packetEvent;
 
-    public EncryptionPacketListener(FastLoginBukkit plugin, ProtocolManager protocolManger) {
-        //run async in order to not block the server, because we make api calls to Mojang
-        super(params(plugin, PacketType.Login.Client.ENCRYPTION_BEGIN).optionAsync());
+    private final Player fromPlayer;
 
+    private final byte[] sharedSecret;
+
+    public VerifyResponseTask(FastLoginBukkit plugin, PacketEvent packetEvent, Player fromPlayer, byte[] sharedSecret) {
         this.plugin = plugin;
-        this.protocolManager = protocolManger;
+        this.packetEvent = packetEvent;
+        this.fromPlayer = fromPlayer;
+        this.sharedSecret = sharedSecret;
     }
 
-    /**
-     * C->S : Handshake State=2
-     * C->S : Login Start
-     * S->C : Encryption Key Request
-     * (Client Auth)
-     * C->S : Encryption Key Response
-     * (Server Auth, Both enable encryption)
-     * S->C : Login Success (*)
-     *
-     * On offline logins is Login Start followed by Login Success
-     *
-     * Minecraft Server implementation
-     * https://github.com/bergerkiller/CraftSource/blob/master/net.minecraft.server/LoginListener.java#L180
-     */
     @Override
-    public void onPacketReceiving(PacketEvent packetEvent) {
-        System.out.println("ENCRYPTION REQUEST");
-        Player player = packetEvent.getPlayer();
-
-        //the player name is unknown to ProtocolLib (so getName() doesn't work) - now uses ip:port as key
-        String uniqueSessionKey = player.getAddress().toString();
-        PlayerSession session = plugin.getSessions().get(uniqueSessionKey);
-        if (session == null) {
-            disconnect(packetEvent, "Invalid request", Level.FINE
-                    , "Player {0} tried to send encryption response at invalid state"
-                    , player.getAddress());
-            return;
+    public void run() {
+        try {
+            BukkitLoginSession session = plugin.getSessions().get(fromPlayer.getAddress().toString());
+            if (session == null) {
+                disconnect(plugin.getCore().getMessage("invalid-requst"), true
+                        , "Player {0} tried to send encryption response at invalid state", fromPlayer.getAddress());
+            } else {
+                verifyResponse(session);
+            }
+        } finally {
+            ProtocolLibrary.getProtocolManager().getAsynchronousManager().signalPacketTransmission(packetEvent);
         }
+    }
 
+    private void verifyResponse(BukkitLoginSession session) {
         PrivateKey privateKey = plugin.getServerKey().getPrivate();
 
-        byte[] sharedSecret = packetEvent.getPacket().getByteArrays().read(0);
         SecretKey loginKey = EncryptionUtil.decryptSharedKey(privateKey, sharedSecret);
-        if (!checkVerifyToken(session, privateKey, packetEvent) || !encryptConnection(player, loginKey, packetEvent)) {
+        if (!checkVerifyToken(session, privateKey) || !encryptConnection(loginKey)) {
             return;
         }
 
@@ -102,38 +75,39 @@ public class EncryptionPacketListener extends PacketAdapter {
         String serverId = (new BigInteger(serverIdHash)).toString(16);
 
         String username = session.getUsername();
-        if (plugin.getApiConnector().hasJoinedServer(session, serverId)) {
+        if (plugin.getCore().getMojangApiConnector().hasJoinedServer(session, serverId)) {
             plugin.getLogger().log(Level.FINE, "Player {0} has a verified premium account", username);
 
             session.setVerified(true);
-            setPremiumUUID(session, player);
-            receiveFakeStartPacket(username, player);
+            setPremiumUUID(session.getUuid());
+            receiveFakeStartPacket(username);
         } else {
             //user tried to fake a authentication
-            disconnect(packetEvent, "Invalid session", Level.FINE
+            disconnect(plugin.getCore().getMessage("invalid-session"), true
                     , "Player {0} ({1}) tried to log in with an invalid session ServerId: {2}"
-                    , session.getUsername(), player.getAddress(), serverId);
+                    , session.getUsername(), fromPlayer.getAddress(), serverId);
         }
 
         //this is a fake packet; it shouldn't be send to the server
-        packetEvent.setCancelled(true);
+        synchronized (packetEvent.getAsyncMarker().getProcessingLock()) {
+            packetEvent.setCancelled(true);
+        }
     }
 
-    private void setPremiumUUID(PlayerSession session, Player player) {
-        UUID uuid = session.getUuid();
-        if (plugin.getConfig().getBoolean("premiumUuid") && uuid != null) {
+    private void setPremiumUUID(UUID premiumUUID) {
+        if (plugin.getConfig().getBoolean("premiumUuid") && premiumUUID != null) {
             try {
-                Object networkManager = getNetworkManager(player);
+                Object networkManager = getNetworkManager();
                 //https://github.com/bergerkiller/CraftSource/blob/master/net.minecraft.server/NetworkManager.java#L69
                 Field spoofField = FuzzyReflection.fromObject(networkManager).getFieldByType("spoofedUUID", UUID.class);
-                spoofField.set(networkManager, uuid);
+                spoofField.set(networkManager, premiumUUID);
             } catch (ReflectiveOperationException reflectiveOperationException) {
                 plugin.getLogger().log(Level.SEVERE, "Error setting premium uuid", reflectiveOperationException);
             }
         }
     }
 
-    private boolean checkVerifyToken(PlayerSession session, PrivateKey privateKey, PacketEvent packetEvent) {
+    private boolean checkVerifyToken(BukkitLoginSession session, PrivateKey privateKey) {
         byte[] requestVerify = session.getVerifyToken();
         //encrypted verify token
         byte[] responseVerify = packetEvent.getPacket().getByteArrays().read(1);
@@ -141,9 +115,8 @@ public class EncryptionPacketListener extends PacketAdapter {
         //https://github.com/bergerkiller/CraftSource/blob/master/net.minecraft.server/LoginListener.java#L182
         if (!Arrays.equals(requestVerify, EncryptionUtil.decryptData(privateKey, responseVerify))) {
             //check if the verify token are equal to the server sent one
-            disconnect(packetEvent, "Invalid token", Level.FINE
-                    , "Player {0} ({1}) tried to login with an invalid verify token. "
-                            + "Server: {2} Client: {3}"
+            disconnect(plugin.getCore().getMessage("invalid-verify-token"), true
+                    , "Player {0} ({1}) tried to login with an invalid verify token. Server: {2} Client: {3}"
                     , session.getUsername(), packetEvent.getPlayer().getAddress(), requestVerify, responseVerify);
             return false;
         }
@@ -152,9 +125,8 @@ public class EncryptionPacketListener extends PacketAdapter {
     }
 
     //try to get the networkManager from ProtocolLib
-    private Object getNetworkManager(Player player)
-            throws IllegalAccessException, NoSuchFieldException {
-        Object socketInjector = TemporaryPlayerFactory.getInjectorFromPlayer(player);
+    private Object getNetworkManager() throws IllegalAccessException, NoSuchFieldException {
+        Object socketInjector = TemporaryPlayerFactory.getInjectorFromPlayer(fromPlayer);
         Field injectorField = socketInjector.getClass().getDeclaredField("injector");
         injectorField.setAccessible(true);
 
@@ -165,36 +137,43 @@ public class EncryptionPacketListener extends PacketAdapter {
         return injectorField.get(rawInjector);
     }
 
-    private boolean encryptConnection(Player player, SecretKey loginKey, PacketEvent packetEvent)
-            throws IllegalArgumentException {
+    private boolean encryptConnection(SecretKey loginKey) throws IllegalArgumentException {
         try {
             //get the NMS connection handle of this player
-            Object networkManager = getNetworkManager(player);
+            Object networkManager = getNetworkManager();
 
             //try to detect the method by parameters
-            Method encryptConnectionMethod = FuzzyReflection.fromObject(networkManager)
-                    .getMethodByParameters("a", SecretKey.class);
+            Method encryptConnectionMethod = FuzzyReflection
+                    .fromObject(networkManager).getMethodByParameters("a", SecretKey.class);
 
             //encrypt/decrypt following packets
             //the client expects this behaviour
             encryptConnectionMethod.invoke(networkManager, loginKey);
         } catch (ReflectiveOperationException ex) {
-            disconnect(packetEvent, "Error occurred", Level.SEVERE, "Couldn't enable encryption", ex);
+            disconnect(plugin.getCore().getMessage("error-kick"), false, "Couldn't enable encryption", ex);
             return false;
         }
 
         return true;
     }
 
-    private void disconnect(PacketEvent packetEvent, String kickReason, Level logLevel, String logMessage
-            , Object... arguments) {
-        plugin.getLogger().log(logLevel, logMessage, arguments);
+    private void disconnect(String kickReason, boolean debug, String logMessage, Object... arguments) {
+        if (debug) {
+            plugin.getLogger().log(Level.FINE, logMessage, arguments);
+        } else {
+            plugin.getLogger().log(Level.SEVERE, logMessage, arguments);
+        }
+
         kickPlayer(packetEvent.getPlayer(), kickReason);
         //cancel the event in order to prevent the server receiving an invalid packet
-        packetEvent.setCancelled(true);
+        synchronized (packetEvent.getAsyncMarker().getProcessingLock()) {
+            packetEvent.setCancelled(true);
+        }
     }
 
     private void kickPlayer(Player player, String reason) {
+        ProtocolManager protocolManager = ProtocolLibrary.getProtocolManager();
+
         PacketContainer kickPacket = protocolManager.createPacket(PacketType.Login.Server.DISCONNECT);
         kickPacket.getChatComponents().write(0, WrappedChatComponent.fromText(reason));
 
@@ -210,7 +189,9 @@ public class EncryptionPacketListener extends PacketAdapter {
     }
 
     //fake a new login packet in order to let the server handle all the other stuff
-    private void receiveFakeStartPacket(String username, Player from) {
+    private void receiveFakeStartPacket(String username) {
+        ProtocolManager protocolManager = ProtocolLibrary.getProtocolManager();
+        
         //see StartPacketListener for packet information
         PacketContainer startPacket = protocolManager.createPacket(PacketType.Login.Client.START);
 
@@ -219,11 +200,11 @@ public class EncryptionPacketListener extends PacketAdapter {
         startPacket.getGameProfiles().write(0, fakeProfile);
         try {
             //we don't want to handle our own packets so ignore filters
-            protocolManager.recieveClientPacket(from, startPacket, false);
+            protocolManager.recieveClientPacket(fromPlayer, startPacket, false);
         } catch (InvocationTargetException | IllegalAccessException ex) {
             plugin.getLogger().log(Level.WARNING, "Failed to fake a new start packet", ex);
             //cancel the event in order to prevent the server receiving an invalid packet
-            kickPlayer(from, "Error occured");
+            kickPlayer(fromPlayer, plugin.getCore().getMessage("error-kick"));
         }
     }
 }

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/protocolsupport/ProtocolSupportListener.java

@@ -0,0 +1,109 @@
+package com.github.games647.fastlogin.bukkit.listener.protocolsupport;
+
+import com.github.games647.fastlogin.bukkit.BukkitLoginSession;
+import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
+import com.github.games647.fastlogin.bukkit.hooks.BukkitAuthPlugin;
+import com.github.games647.fastlogin.core.PlayerProfile;
+
+import java.net.InetSocketAddress;
+import java.util.UUID;
+import java.util.logging.Level;
+
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+
+import protocolsupport.api.events.PlayerLoginStartEvent;
+import protocolsupport.api.events.PlayerPropertiesResolveEvent;
+
+public class ProtocolSupportListener implements Listener {
+
+    protected final FastLoginBukkit plugin;
+
+    public ProtocolSupportListener(FastLoginBukkit plugin) {
+        this.plugin = plugin;
+    }
+
+    @EventHandler(ignoreCancelled = true)
+    public void onLoginStart(PlayerLoginStartEvent loginStartEvent) {
+        plugin.setServerStarted();
+        if (loginStartEvent.isLoginDenied()) {
+            return;
+        }
+
+        String username = loginStartEvent.getName();
+
+        //remove old data every time on a new login in order to keep the session only for one person
+        plugin.getSessions().remove(loginStartEvent.getAddress().toString());
+
+        BukkitAuthPlugin authPlugin = plugin.getAuthPlugin();
+        if (authPlugin == null) {
+            return;
+        }
+
+        PlayerProfile profile = plugin.getCore().getStorage().loadProfile(username);
+        if (profile != null) {
+            if (profile.getUserId() == -1) {
+                UUID premiumUUID = null;
+
+                //user not exists in the db
+                try {
+                    boolean isRegistered = plugin.getAuthPlugin().isRegistered(username);
+                    if (plugin.getConfig().getBoolean("nameChangeCheck") 
+                            || (plugin.getConfig().getBoolean("autoRegister") && !isRegistered)) {
+                        premiumUUID = plugin.getCore().getMojangApiConnector().getPremiumUUID(username);
+                    }
+
+                    if (premiumUUID != null && plugin.getConfig().getBoolean("nameChangeCheck")) {
+                        profile = plugin.getCore().getStorage().loadProfile(premiumUUID);
+                        if (profile != null) {
+                            plugin.getLogger().log(Level.FINER, "Player {0} changed it's username", premiumUUID);
+                            startPremiumSession(username, loginStartEvent, false, profile);
+                            return;
+                        }
+                    }
+
+                    if (premiumUUID != null && plugin.getConfig().getBoolean("autoRegister") && !isRegistered) {
+                        plugin.getLogger().log(Level.FINER, "Player {0} uses a premium username", username);
+                        startPremiumSession(username, loginStartEvent, false, profile);
+                        return;
+                    }
+
+                    //no premium check passed so we save it as a cracked player
+                    BukkitLoginSession loginSession = new BukkitLoginSession(username, profile);
+                    plugin.getSessions().put(loginStartEvent.getAddress().toString(), loginSession);
+                } catch (Exception ex) {
+                    plugin.getLogger().log(Level.SEVERE, "Failed to query isRegistered", ex);
+                }
+            } else if (profile.isPremium()) {
+                startPremiumSession(username, loginStartEvent, true, profile);
+            } else {
+                BukkitLoginSession loginSession = new BukkitLoginSession(username, profile);
+                plugin.getSessions().put(loginStartEvent.getAddress().toString(), loginSession);
+            }
+        }
+    }
+
+    @EventHandler(ignoreCancelled = true)
+    public void onPropertiesResolve(PlayerPropertiesResolveEvent propertiesResolveEvent) {
+        //skin was resolved -> premium player
+        if (propertiesResolveEvent.hasProperty("textures")) {
+            InetSocketAddress address = propertiesResolveEvent.getAddress();
+            BukkitLoginSession session = plugin.getSessions().get(address.toString());
+            if (session != null) {
+                session.setVerified(true);
+            }
+        }
+    }
+
+    private void startPremiumSession(String playerName, PlayerLoginStartEvent loginStartEvent, boolean registered
+            , PlayerProfile playerProfile) {
+        loginStartEvent.setOnlineMode(true);
+        InetSocketAddress address = loginStartEvent.getAddress();
+
+        BukkitLoginSession playerSession = new BukkitLoginSession(playerName, null, null, registered, playerProfile);
+        plugin.getSessions().put(address.toString(), playerSession);
+        if (plugin.getConfig().getBoolean("premiumUuid")) {
+            loginStartEvent.setUseOnlineModeUUID(true);
+        }
+    }
+}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/tasks/DelayedAuthHook.java

@@ -0,0 +1,71 @@
+package com.github.games647.fastlogin.bukkit.tasks;
+
+import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
+import com.github.games647.fastlogin.bukkit.hooks.AuthMeHook;
+import com.github.games647.fastlogin.bukkit.hooks.BukkitAuthPlugin;
+import com.github.games647.fastlogin.bukkit.hooks.CrazyLoginHook;
+import com.github.games647.fastlogin.bukkit.hooks.LogItHook;
+import com.github.games647.fastlogin.bukkit.hooks.LoginSecurityHook;
+import com.github.games647.fastlogin.bukkit.hooks.UltraAuthHook;
+import com.github.games647.fastlogin.bukkit.hooks.xAuthHook;
+import com.google.common.collect.Lists;
+
+import java.util.List;
+import java.util.logging.Level;
+
+import org.bukkit.Bukkit;
+
+public class DelayedAuthHook implements Runnable {
+
+    private final FastLoginBukkit plugin;
+
+    public DelayedAuthHook(FastLoginBukkit plugin) {
+        this.plugin = plugin;
+    }
+
+    @Override
+    public void run() {
+        boolean hookFound = registerHooks();
+        if (plugin.isBungeeCord()) {
+            plugin.getLogger().info("BungeeCord setting detected. No auth plugin is required");
+        } else if (!hookFound) {
+            plugin.getLogger().warning("No auth plugin were found by this plugin "
+                    + "(other plugins could hook into this after the intialization of this plugin)"
+                    + "and bungeecord is deactivated. "
+                    + "Either one or both of the checks have to pass in order to use this plugin");
+        }
+    }
+
+    private boolean registerHooks() {
+        BukkitAuthPlugin authPluginHook = null;
+        try {
+            List<Class<? extends BukkitAuthPlugin>> supportedHooks = Lists.newArrayList(AuthMeHook.class
+                    , CrazyLoginHook.class, LogItHook.class, LoginSecurityHook.class, UltraAuthHook.class
+                    , xAuthHook.class);
+            for (Class<? extends BukkitAuthPlugin> clazz : supportedHooks) {
+                String pluginName = clazz.getSimpleName().replace("Hook", "");
+                //uses only member classes which uses AuthPlugin interface (skip interfaces)
+                if (Bukkit.getServer().getPluginManager().getPlugin(pluginName) != null) {
+                    //check only for enabled plugins. A single plugin could be disabled by plugin managers
+                    authPluginHook = clazz.newInstance();
+                    plugin.getLogger().log(Level.INFO, "Hooking into auth plugin: {0}", pluginName);
+                    break;
+                }
+            }
+        } catch (InstantiationException | IllegalAccessException ex) {
+            plugin.getLogger().log(Level.SEVERE, "Couldn't load the integration class", ex);
+        }
+
+        if (authPluginHook == null) {
+            //run this check for exceptions (errors) and not found plugins
+            plugin.getLogger().warning("No support offline Auth plugin found. ");
+            return false;
+        }
+
+        if (plugin.getAuthPlugin() == null) {
+            plugin.setAuthPluginHook(authPluginHook);
+        }
+        
+        return true;
+    }
+}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/tasks/ForceLoginTask.java

@@ -1,6 +1,10 @@
-package com.github.games647.fastlogin.bukkit;
+package com.github.games647.fastlogin.bukkit.tasks;
 
+import com.github.games647.fastlogin.bukkit.BukkitLoginSession;
+import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
 import com.github.games647.fastlogin.bukkit.hooks.BukkitAuthPlugin;
+import com.github.games647.fastlogin.core.AuthStorage;
+import com.github.games647.fastlogin.core.PlayerProfile;
 import com.google.common.io.ByteArrayDataOutput;
 import com.google.common.io.ByteStreams;
 
@@ -10,12 +14,11 @@ import java.util.concurrent.Future;
 import java.util.logging.Level;
 
 import org.bukkit.Bukkit;
-import org.bukkit.ChatColor;
 import org.bukkit.entity.Player;
 
 public class ForceLoginTask implements Runnable {
 
-    protected final FastLoginBukkit plugin;
+    private final FastLoginBukkit plugin;
     protected final Player player;
 
     public ForceLoginTask(FastLoginBukkit plugin, Player player) {
@@ -31,32 +34,24 @@ public class ForceLoginTask implements Runnable {
 
         //remove the bungeecord identifier if there is ones
         String id = '/' + player.getAddress().getAddress().getHostAddress() + ':' + player.getAddress().getPort();
-        PlayerSession session = plugin.getSessions().get(id);
-
-        BukkitAuthPlugin authPlugin = plugin.getAuthPlugin();
-
-        Storage storage = plugin.getStorage();
-        PlayerProfile playerProfile = null;
-        if (storage != null) {
-            playerProfile = storage.getProfile(player.getName(), false);
+        BukkitLoginSession session = plugin.getSessions().remove(id);
+        if (session == null) {
+            return;
         }
 
-        if (session == null) {
-            //cracked player
-            if (playerProfile != null) {
-                playerProfile.setUuid(null);
-                playerProfile.setPremium(false);
-                storage.save(playerProfile);
-            }
-            //check if it's the same player as we checked before
-        } else if (player.getName().equals(session.getUsername())) {
+        AuthStorage storage = plugin.getCore().getStorage();
+        PlayerProfile playerProfile = session.getProfile();
+
+        //check if it's the same player as we checked before
+        if (session.isVerified() && player.getName().equals(session.getUsername())) {
             //premium player
+            BukkitAuthPlugin authPlugin = plugin.getAuthPlugin();
             if (authPlugin == null) {
                 //maybe only bungeecord plugin
                 sendSuccessNotification();
             } else {
                 boolean success = false;
-                if (isOnlineThreadSafe() && session.isVerified()) {
+                if (isOnlineThreadSafe()) {
                     if (session.needsRegistration()) {
                         success = forceRegister(authPlugin, player);
                     } else {
@@ -69,13 +64,20 @@ public class ForceLoginTask implements Runnable {
                     if (playerProfile != null) {
                         playerProfile.setUuid(session.getUuid());
                         //save cracked players too
-                        playerProfile.setPremium(session.isVerified());
+                        playerProfile.setPremium(true);
                         storage.save(playerProfile);
                     }
 
                     sendSuccessNotification();
                 }
             }
+        } else {
+            //cracked player
+            if (playerProfile != null) {
+                playerProfile.setUuid(null);
+                playerProfile.setPremium(false);
+                storage.save(playerProfile);
+            }
         }
     }
 
@@ -84,15 +86,24 @@ public class ForceLoginTask implements Runnable {
 
         String generatedPassword = plugin.generateStringPassword(player);
         boolean success = authPlugin.forceRegister(player, generatedPassword);
-        player.sendMessage(ChatColor.DARK_GREEN + "Auto registered with password: " + generatedPassword);
-        player.sendMessage(ChatColor.DARK_GREEN + "You may want change it?");
+        String message = plugin.getCore().getMessage("auto-register");
+        if (success && message != null) {
+            message = message.replace("%password", generatedPassword);
+            player.sendMessage(message);
+        }
+
         return success;
     }
 
     private boolean forceLogin(BukkitAuthPlugin authPlugin, Player player) {
         plugin.getLogger().log(Level.FINE, "Logging player {0} in", player.getName());
         boolean success = authPlugin.forceLogin(player);
-        player.sendMessage(ChatColor.DARK_GREEN + "Auto logged in");
+
+        String message = plugin.getCore().getMessage("auto-login");
+        if (success && message != null) {
+            player.sendMessage(message);
+        }
+
         return success;
     }
 

bukkit/src/main/resources/config.yml

@@ -1,73 +0,0 @@
-# FastLogin config
-# Project site: https://www.spigotmc.org/resources/fastlogin.14153
-# Source code: https://github.com/games647/FastLogin
-#
-# You can access the newest config here:
-# https://github.com/games647/FastLogin/blob/master/bukkit/src/main/resources/config.yml
-
-# Request a premium login without forcing the player to type a command
-#
-# If you activate autoRegister, this plugin will check/do these points on login:
-# 1. An existing cracked account shouldn't exist
-# -> paid accounts cannot steal the existing account of cracked players
-# - (Already registered players could still use the /premium command to activate premium checks)
-# 2. Automatically registers an account with a strong random generated password
-# -> cracked player cannot register an account for the premium player and so cannot the steal the account
-#
-# Furthermore the premium player check have to be made based on the player name
-# This means if a cracked player connects to the server and we request a paid account login from this player
-# the player just disconnect and sees the message: 'bad login' or 'invalid session'
-# There is no way to change this message
-# For more information: https://github.com/games647/FastLogin#why-do-players-have-to-invoke-a-command
-autoRegister: false
-
-# If this plugin detected that a player has a premium, it can also set the associated
-# uuid from that account. So if the players changes their usernames, they will still have
-# the same playerdata (inventory, permissions, ...)
-#
-# Warning: This also means that the UUID will be different if the player is connecting
-# through a offline mode connection. This **could** cause plugin compatibility issues.
-#
-# This is a example and doesn't apply for every plugin.
-# Example: If you want to ban players who aren't online at the moment, the ban plugin will look
-# after a offline uuid associated to the player, because the server is in offline mode. Then the premium
-# players could still join the server, because they have different UUID.
-#
-# Moreover you may want to convert the offline UUID to a premium UUID. This will ensure that the player
-# will have the same inventory, permissions, ... if they switched to premium authentification from offline/cracked
-# authentification.
-#
-# This feature requires Cauldron, Spigot or a fork of Spigot (PaperSpigot, TacoSpigot)
-premiumUuid: false
-
-# If your players have a premium account and a skin associated to their account, this plugin
-# can download the data and set it to the online player.
-#
-# Keep in mind that this will only works if the player:
-# * is the owner of the premium account
-# * the serverconnection is established through a premium connection (paid account authentification)
-# * has a skin
-#
-# This means this plugin doesn't need to create a new connection to the Mojang servers, because
-# the skin data is included in the Auth-Verification-Response sent by Mojang. If you want to use for other
-# players like cracked player, you have to use other plugins.
-#
-# If you want to use skins for your cracked player, you need an additional plugin like
-# ChangeSkin, SkinRestoer, ...
-forwardSkin: true
-
-# Database configuration
-# Recommened is the use of MariaDB (a better version of MySQL)
-
-# Single file SQLite database
-driver: org.sqlite.JDBC
-# File location
-database: '{pluginDir}/FastLogin.db'
-
-# MySQL and SQLite
-#driver: com.mysql.jdbc.Driver
-#host: localhost
-#port: 3306
-#database: fastlogin
-#username: myUser
-#password: myPassword

bukkit/src/main/resources/plugin.yml

@@ -14,12 +14,11 @@ dev-url: ${project.url}
 # Load the plugin as early as possible to inject it for all players
 load: STARTUP
 
-# Without Protocollib the plugin does not work at all
-depend: [ProtocolLib]
-
 softdepend:
+    # We require either ProtocolLib or ProtocolSupport
     - ProtocolSupport
-    # Auth plugins
+    - ProtocolLib
+    # Auth plugins - we delay the hook
 #    - xAuth
 #    - AuthMe
 #    - LogIt

bungee/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <groupId>com.github.games647</groupId>
         <artifactId>fastlogin</artifactId>
-        <version>1.3</version>
+        <version>1.7.1</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
@@ -17,16 +17,10 @@
     <name>FastLoginBungee</name>
 
     <repositories>
-        <!--Waterfall-->
-<!--        <repository>
-            <id>ellune-releases</id>
-            <url>https://repo.ellune.net/content/repositories/snapshots/</url>
-        </repository>-->
-
         <!--BungeeCord with also the part outside the API-->
         <repository>
-            <id>RYRED-REPO</id>
-            <url>http://mvn.ryred.co/repository/snapshots/</url>
+            <id>myplayplanet-REPO</id>
+            <url>http://maven.myplayplanet.net/</url>
         </repository>
 
         <!--Github automatic maven builds-->
@@ -38,12 +32,19 @@
 
     <dependencies>
         <dependency>
-            <groupId>net.md-5</groupId>
-            <artifactId>bungeecord-proxy</artifactId>
-            <version>1.9-SNAPSHOT</version>
+            <groupId>${project.groupId}</groupId>
+            <artifactId>fastlogin.core</artifactId>
+            <version>${project.version}</version>
             <scope>provided</scope>
         </dependency>
-<!--        <dependency>
+
+        <dependency>
+            <groupId>net.md-5</groupId>
+            <artifactId>bungeecord-proxy</artifactId>
+            <version>1.8-SNAPSHOT</version>
+            <scope>provided</scope>
+        </dependency>
+        <!--        <dependency>
             <groupId>io.github.waterfallmc</groupId>
             <artifactId>waterfall-api</artifactId>
             <version>1.9-SNAPSHOT</version>

bungee/src/main/java/com/github/games647/fastlogin/bungee/BungeeCore.java

@@ -0,0 +1,89 @@
+package com.github.games647.fastlogin.bungee;
+
+import com.github.games647.fastlogin.core.FastLoginCore;
+import com.google.common.util.concurrent.ThreadFactoryBuilder;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.util.concurrent.ThreadFactory;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import net.md_5.bungee.api.ChatColor;
+
+import net.md_5.bungee.api.scheduler.GroupedThreadFactory;
+import net.md_5.bungee.config.Configuration;
+import net.md_5.bungee.config.ConfigurationProvider;
+import net.md_5.bungee.config.YamlConfiguration;
+
+public class BungeeCore extends FastLoginCore {
+
+    private final FastLoginBungee plugin;
+
+    public BungeeCore(FastLoginBungee plugin) {
+        this.plugin = plugin;
+    }
+
+    @Override
+    public File getDataFolder() {
+        return plugin.getDataFolder();
+    }
+
+    @Override
+    public Logger getLogger() {
+        return plugin.getLogger();
+    }
+
+    @Override
+    public ThreadFactory getThreadFactory() {
+        String pluginName = plugin.getDescription().getName();
+        return new ThreadFactoryBuilder()
+                .setNameFormat(pluginName + " Database Pool Thread #%1$d")
+                //Hikari create daemons by default
+                .setDaemon(true)
+                .setThreadFactory(new GroupedThreadFactory(plugin, pluginName)).build();
+    }
+
+    @Override
+    public void loadMessages() {
+        try {
+            saveDefaultFile("messages.yml");
+
+            Configuration defaults = ConfigurationProvider.getProvider(YamlConfiguration.class)
+                    .load(getClass().getResourceAsStream("/messages.yml"));
+
+            File messageFile = new File(getDataFolder(), "messages.yml");
+            Configuration messageConfig = ConfigurationProvider.getProvider(YamlConfiguration.class)
+                    .load(messageFile, defaults);
+            for (String key : messageConfig.getKeys()) {
+                String message = ChatColor.translateAlternateColorCodes('&', messageConfig.getString(key));
+                if (!message.isEmpty()) {
+                    localeMessages.put(key, message);
+                }
+            }
+        } catch (IOException ex) {
+            getLogger().log(Level.SEVERE, "Failed to load messages", ex);
+        }
+    }
+
+    @Override
+    public void loadConfig() {
+        if (!getDataFolder().exists()) {
+            getDataFolder().mkdir();
+        }
+
+        saveDefaultFile("config.yml");
+    }
+
+    private void saveDefaultFile(String fileName) {
+        File configFile = new File(getDataFolder(), fileName);
+        if (!configFile.exists()) {
+            try (InputStream in = plugin.getResourceAsStream(fileName)) {
+                Files.copy(in, configFile.toPath());
+            } catch (IOException ioExc) {
+                getLogger().log(Level.SEVERE, "Error saving default " + fileName, ioExc);
+            }
+        }
+    }
+}

bungee/src/main/java/com/github/games647/fastlogin/bungee/BungeeLoginSession.java

@@ -0,0 +1,25 @@
+package com.github.games647.fastlogin.bungee;
+
+import com.github.games647.fastlogin.core.LoginSession;
+import com.github.games647.fastlogin.core.PlayerProfile;
+
+public class BungeeLoginSession extends LoginSession {
+
+    private boolean alreadySaved;
+
+    public BungeeLoginSession(String username, boolean registered, PlayerProfile profile) {
+        super(username, registered, profile);
+    }
+
+    public void setRegistered(boolean registered) {
+        this.registered = registered;
+    }
+
+    public boolean isAlreadySaved() {
+        return alreadySaved;
+    }
+
+    public void setAlreadySaved(boolean alreadySaved) {
+        this.alreadySaved = alreadySaved;
+    }
+}

bungee/src/main/java/com/github/games647/fastlogin/bungee/FastLoginBungee.java

@@ -1,22 +1,24 @@
 package com.github.games647.fastlogin.bungee;
 
-import com.github.games647.fastlogin.bungee.listener.PlayerConnectionListener;
 import com.github.games647.fastlogin.bungee.hooks.BungeeAuthHook;
 import com.github.games647.fastlogin.bungee.hooks.BungeeAuthPlugin;
+import com.github.games647.fastlogin.bungee.listener.PlayerConnectionListener;
 import com.github.games647.fastlogin.bungee.listener.PluginMessageListener;
+import com.github.games647.fastlogin.core.FastLoginCore;
 import com.google.common.cache.CacheBuilder;
+import com.google.common.collect.Maps;
+import com.google.common.collect.Sets;
 
 import java.io.File;
 import java.io.IOException;
-import java.io.InputStream;
-import java.nio.file.Files;
+import java.util.List;
 import java.util.Random;
+import java.util.Set;
 import java.util.UUID;
 import java.util.concurrent.ConcurrentMap;
 import java.util.concurrent.TimeUnit;
 import java.util.logging.Level;
 
-import net.md_5.bungee.Util;
 import net.md_5.bungee.api.connection.PendingConnection;
 import net.md_5.bungee.api.plugin.Plugin;
 import net.md_5.bungee.config.Configuration;
@@ -28,58 +30,44 @@ import net.md_5.bungee.config.YamlConfiguration;
  */
 public class FastLoginBungee extends Plugin {
 
-    private static final char[] CHARACTERS = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+    private static final char[] PASSWORD_CHARACTERS = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
             .toCharArray();
 
-    public static UUID parseId(String withoutDashes) {
-        return Util.getUUID(withoutDashes);
-    }
-
+    private final FastLoginCore loginCore = new BungeeCore(this);
     private BungeeAuthPlugin bungeeAuthPlugin;
-    private final MojangApiConnector mojangApiConnector = new MojangApiConnector(this);
-    private Storage storage;
-    private Configuration configuration;
+    private Configuration config;
 
     private final Random random = new Random();
+    private final Set<UUID> pendingConfirms = Sets.newHashSet();
 
-    private final ConcurrentMap<PendingConnection, Object> pendingAutoRegister = CacheBuilder
-            .newBuilder()
-            .expireAfterWrite(1, TimeUnit.MINUTES)
-            .<PendingConnection, Object>build().asMap();
+    private final ConcurrentMap<PendingConnection, BungeeLoginSession> session = Maps.newConcurrentMap();
 
     @Override
     public void onEnable() {
-        if (!getDataFolder().exists()) {
-            getDataFolder().mkdir();
-        }
-
-        File configFile = new File(getDataFolder(), "config.yml");
-        if (!configFile.exists()) {
-            try (InputStream in = getResourceAsStream("config.yml")) {
-                Files.copy(in, configFile.toPath());
-            } catch (IOException ioExc) {
-                getLogger().log(Level.SEVERE, "Error saving default config", ioExc);
-            }
-        }
+        loginCore.loadConfig();
+        loginCore.loadMessages();
 
         try {
-            configuration = ConfigurationProvider.getProvider(YamlConfiguration.class).load(configFile);
+            File configFile = new File(getDataFolder(), "config.yml");
+            config = ConfigurationProvider.getProvider(YamlConfiguration.class).load(configFile);
 
-            String driver = configuration.getString("driver");
-            String host = configuration.getString("host", "");
-            int port = configuration.getInt("port", 3306);
-            String database = configuration.getString("database");
+            List<String> ipAddresses = getConfig().getStringList("ip-addresses");
+            int requestLimit = getConfig().getInt("mojang-request-limit");
+            ConcurrentMap<Object, Object> requestCache = CacheBuilder.newBuilder()
+                    .expireAfterWrite(10, TimeUnit.MINUTES).build().asMap();
+            MojangApiBungee mojangApi = new MojangApiBungee(requestCache, getLogger(), ipAddresses, requestLimit);
+            loginCore.setMojangApiConnector(mojangApi);
 
-            String username = configuration.getString("username", "");
-            String password = configuration.getString("password", "");
-            storage = new Storage(this, driver, host, port, database, username, password);
-            try {
-                storage.createTables();
-            } catch (Exception ex) {
-                getLogger().log(Level.SEVERE, "Failed to setup database. Disabling plugin...", ex);
+            String driver = config.getString("driver");
+            String host = config.getString("host", "");
+            int port = config.getInt("port", 3306);
+            String database = config.getString("database");
+
+            String username = config.getString("username", "");
+            String password = config.getString("password", "");
+            if (!loginCore.setupDatabase(driver, host, port, database, username, password)) {
                 return;
             }
-
         } catch (IOException ioExc) {
             getLogger().log(Level.SEVERE, "Error loading config. Disabling plugin...", ioExc);
             return;
@@ -98,7 +86,7 @@ public class FastLoginBungee extends Plugin {
     public String generateStringPassword() {
         StringBuilder generatedPassword = new StringBuilder(8);
         for (int i = 1; i <= 8; i++) {
-            generatedPassword.append(CHARACTERS[random.nextInt(CHARACTERS.length - 1)]);
+            generatedPassword.append(PASSWORD_CHARACTERS[random.nextInt(PASSWORD_CHARACTERS.length - 1)]);
         }
 
         return generatedPassword.toString();
@@ -106,25 +94,27 @@ public class FastLoginBungee extends Plugin {
 
     @Override
     public void onDisable() {
-        if (storage != null) {
-            storage.close();
-        }
+        loginCore.close();
     }
 
-    public Configuration getConfiguration() {
-        return configuration;
+    public FastLoginCore getCore() {
+        return loginCore;
     }
 
-    public Storage getStorage() {
-        return storage;
+    public void setAuthPluginHook(BungeeAuthPlugin authPlugin) {
+        this.bungeeAuthPlugin = authPlugin;
     }
 
-    public MojangApiConnector getMojangApiConnector() {
-        return mojangApiConnector;
+    public Configuration getConfig() {
+        return config;
     }
 
-    public ConcurrentMap<PendingConnection, Object> getPendingAutoRegister() {
-        return pendingAutoRegister;
+    public ConcurrentMap<PendingConnection, BungeeLoginSession> getSession() {
+        return session;
+    }
+
+    public Set<UUID> getPendingConfirms() {
+        return pendingConfirms;
     }
 
     /**

bungee/src/main/java/com/github/games647/fastlogin/bungee/ForceLoginTask.java

@@ -1,74 +0,0 @@
-package com.github.games647.fastlogin.bungee;
-
-import com.github.games647.fastlogin.bungee.hooks.BungeeAuthPlugin;
-import com.google.common.io.ByteArrayDataOutput;
-import com.google.common.io.ByteStreams;
-
-import java.util.UUID;
-
-import net.md_5.bungee.api.connection.ProxiedPlayer;
-import net.md_5.bungee.api.connection.Server;
-
-public class ForceLoginTask implements Runnable {
-
-    private final FastLoginBungee plugin;
-    private final ProxiedPlayer player;
-    private final Server server;
-
-    public ForceLoginTask(FastLoginBungee plugin, ProxiedPlayer player, Server server) {
-        this.plugin = plugin;
-        this.player = player;
-        this.server = server;
-    }
-
-    @Override
-    public void run() {
-        PlayerProfile playerProfile = plugin.getStorage().getProfile(player.getName(), false);
-
-        //force login only on success
-        if (player.getPendingConnection().isOnlineMode()) {
-            boolean autoRegister = plugin.getPendingAutoRegister().remove(player.getPendingConnection()) != null;
-
-            BungeeAuthPlugin authPlugin = plugin.getBungeeAuthPlugin();
-            if (authPlugin == null) {
-                sendBukkitLoginNotification(autoRegister);
-            } else if (player.isConnected()) {
-                if (autoRegister) {
-                    String password = plugin.generateStringPassword();
-                    if (authPlugin.forceRegister(player, password)) {
-                        sendBukkitLoginNotification(autoRegister);
-                    }
-                } else if (authPlugin.forceLogin(player)) {
-                    sendBukkitLoginNotification(autoRegister);
-                }
-            }
-        } else {
-            //cracked player
-            //update only on success to prevent corrupt data
-            playerProfile.setPremium(false);
-            plugin.getStorage().save(playerProfile);
-        }
-    }
-
-    private void sendBukkitLoginNotification(boolean autoRegister) {
-        ByteArrayDataOutput dataOutput = ByteStreams.newDataOutput();
-        //subchannel name
-        if (autoRegister) {
-            dataOutput.writeUTF("AUTO_REGISTER");
-        } else {
-            dataOutput.writeUTF("AUTO_LOGIN");
-        }
-
-        //Data is sent through a random player. We have to tell the Bukkit version of this plugin the target
-        dataOutput.writeUTF(player.getName());
-
-        //proxy identifier to check if it's a acceptable proxy
-        UUID proxyId = UUID.fromString(plugin.getProxy().getConfig().getUuid());
-        dataOutput.writeLong(proxyId.getMostSignificantBits());
-        dataOutput.writeLong(proxyId.getLeastSignificantBits());
-
-        if (server != null) {
-            server.sendData(plugin.getDescription().getName(), dataOutput.toByteArray());
-        }
-    }
-}

bungee/src/main/java/com/github/games647/fastlogin/bungee/MojangApiBungee.java

@@ -0,0 +1,43 @@
+package com.github.games647.fastlogin.bungee;
+
+import com.github.games647.fastlogin.core.FastLoginCore;
+import com.github.games647.fastlogin.core.MojangApiConnector;
+
+import java.util.List;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentMap;
+import java.util.logging.Logger;
+
+import net.md_5.bungee.BungeeCord;
+
+public class MojangApiBungee extends MojangApiConnector {
+
+    public MojangApiBungee(ConcurrentMap<Object, Object> requests, Logger logger, List<String> localAddresses
+            , int rateLimit) {
+        super(requests, logger, localAddresses, rateLimit);
+    }
+
+    @Override
+    protected UUID getUUIDFromJson(String json) {
+        boolean isArray = json.startsWith("[");
+
+        MojangPlayer mojangPlayer;
+        if (isArray) {
+            mojangPlayer = BungeeCord.getInstance().gson.fromJson(json, MojangPlayer[].class)[0];
+        } else {
+            mojangPlayer = BungeeCord.getInstance().gson.fromJson(json, MojangPlayer.class);
+        }
+
+        if (mojangPlayer.getId() == null || mojangPlayer.getId().equals("null")) {
+            return null;
+        }
+        
+        return FastLoginCore.parseId(mojangPlayer.getId());
+    }
+
+    @Override
+    public boolean hasJoinedServer(Object session, String serverId) {
+        //this is not needed in Bungee
+        throw new UnsupportedOperationException("Not supported");
+    }
+}

bungee/src/main/java/com/github/games647/fastlogin/bungee/MojangApiConnector.java

@@ -1,80 +0,0 @@
-package com.github.games647.fastlogin.bungee;
-
-import com.google.gson.Gson;
-
-import java.io.BufferedReader;
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.net.HttpURLConnection;
-import java.net.URL;
-import java.util.UUID;
-import java.util.logging.Level;
-import java.util.regex.Pattern;
-
-import net.md_5.bungee.BungeeCord;
-
-public class MojangApiConnector {
-
-    //http connection, read timeout and user agent for a connection to mojang api servers
-    private static final int TIMEOUT = 1 * 1_000;
-    private static final String USER_AGENT = "Premium-Checker";
-
-    //mojang api check to prove a player is logged in minecraft and made a join server request
-    private static final String HAS_JOINED_URL = "https://sessionserver.mojang.com/session/minecraft/hasJoined?";
-
-    //only premium (paid account) users have a uuid from here
-    private static final String UUID_LINK = "https://api.mojang.com/users/profiles/minecraft/";
-    //this includes a-zA-Z1-9_
-    private static final String VALID_PLAYERNAME = "^\\w{2,16}$";
-
-    //compile the pattern only on plugin enable -> and this have to be threadsafe
-    private final Pattern playernameMatcher = Pattern.compile(VALID_PLAYERNAME);
-
-    private final FastLoginBungee plugin;
-
-    private final Gson gson = new Gson();
-
-    public MojangApiConnector(FastLoginBungee plugin) {
-        this.plugin = plugin;
-    }
-
-    /**
-     *
-     * @param playerName
-     * @return null on non-premium
-     */
-    public UUID getPremiumUUID(String playerName) {
-        //check if it's a valid playername
-        if (playernameMatcher.matcher(playerName).matches()) {
-            //only make a API call if the name is valid existing mojang account
-            try {
-                HttpURLConnection connection = getConnection(UUID_LINK + playerName);
-                if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
-                    BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
-                    String line = reader.readLine();
-                    if (line != null && !line.equals("null")) {
-                        MojangPlayer mojangPlayer = BungeeCord.getInstance().gson.fromJson(line, MojangPlayer.class);
-                        return FastLoginBungee.parseId(mojangPlayer.getId());
-                    }
-                }
-                //204 - no content for not found
-            } catch (Exception ex) {
-                plugin.getLogger().log(Level.SEVERE, "Failed to check if player has a paid account", ex);
-            }
-            //this connection doesn't need to be closed. So can make use of keep alive in java
-        }
-
-        return null;
-    }
-
-    private HttpURLConnection getConnection(String url) throws IOException {
-        HttpURLConnection connection = (HttpURLConnection) new URL(url).openConnection();
-        connection.setConnectTimeout(TIMEOUT);
-        connection.setReadTimeout(TIMEOUT);
-        //the new Mojang API just uses json as response
-        connection.setRequestProperty("Content-Type", "application/json");
-        connection.setRequestProperty("User-Agent", USER_AGENT);
-
-        return connection;
-    }
-}

bungee/src/main/java/com/github/games647/fastlogin/bungee/Storage.java

@@ -1,201 +0,0 @@
-package com.github.games647.fastlogin.bungee;
-
-import com.google.common.cache.CacheBuilder;
-import com.google.common.cache.CacheLoader;
-import com.zaxxer.hikari.HikariConfig;
-import com.zaxxer.hikari.HikariDataSource;
-
-import java.sql.Connection;
-import java.sql.PreparedStatement;
-import java.sql.ResultSet;
-import java.sql.SQLException;
-import java.sql.Statement;
-import java.util.UUID;
-import java.util.concurrent.ConcurrentMap;
-import java.util.concurrent.TimeUnit;
-import java.util.logging.Level;
-
-public class Storage {
-
-    private static final String PREMIUM_TABLE = "premium";
-
-    private final ConcurrentMap<String, PlayerProfile> profileCache = CacheBuilder
-            .<String, PlayerProfile>newBuilder()
-            .concurrencyLevel(20)
-            .expireAfterAccess(30, TimeUnit.MINUTES)
-            .build(new CacheLoader<String, PlayerProfile>() {
-                @Override
-                public PlayerProfile load(String key) throws Exception {
-                    //should be fetched manually
-                    throw new UnsupportedOperationException("Not supported yet.");
-                }
-            }).asMap();
-
-    private final HikariDataSource dataSource;
-    private final FastLoginBungee plugin;
-
-    public Storage(FastLoginBungee plugin, String driver, String host, int port, String databasePath
-            , String user, String pass) {
-        this.plugin = plugin;
-
-        HikariConfig databaseConfig = new HikariConfig();
-        databaseConfig.setUsername(user);
-        databaseConfig.setPassword(pass);
-        databaseConfig.setDriverClassName(driver);
-
-        databasePath = databasePath.replace("{pluginDir}", plugin.getDataFolder().getAbsolutePath());
-
-        String jdbcUrl = "jdbc:";
-        if (driver.contains("sqlite")) {
-            jdbcUrl += "sqlite" + "://" + databasePath;
-            databaseConfig.setConnectionTestQuery("SELECT 1");
-        } else {
-            jdbcUrl += "mysql" + "://" + host + ':' + port + '/' + databasePath;
-        }
-
-        databaseConfig.setJdbcUrl(jdbcUrl);
-        this.dataSource = new HikariDataSource(databaseConfig);
-    }
-
-    public void createTables() throws SQLException {
-        Connection con = null;
-        try {
-            con = dataSource.getConnection();
-            Statement statement = con.createStatement();
-            String createDataStmt = "CREATE TABLE IF NOT EXISTS " + PREMIUM_TABLE + " ("
-                    + "`UserID` INTEGER PRIMARY KEY AUTO_INCREMENT, "
-                    + "`UUID` CHAR(36), "
-                    + "`Name` VARCHAR(16) NOT NULL, "
-                    + "`Premium` BOOLEAN NOT NULL, "
-                    + "`LastIp` VARCHAR(255) NOT NULL, "
-                    + "`LastLogin` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, "
-                    + "UNIQUE (`UUID`), "
-                    //the premium shouldn't steal the cracked account by changing the name
-                    + "UNIQUE (`Name`) "
-                    + ")";
-
-            if (dataSource.getJdbcUrl().contains("sqlite")) {
-                createDataStmt = createDataStmt.replace("AUTO_INCREMENT", "AUTOINCREMENT");
-            }
-
-            statement.executeUpdate(createDataStmt);
-        } finally {
-            closeQuietly(con);
-        }
-    }
-
-    public PlayerProfile getProfile(String name, boolean fetch) {
-        if (profileCache.containsKey(name)) {
-            return profileCache.get(name);
-        } else if (fetch) {
-            Connection con = null;
-            try {
-                con = dataSource.getConnection();
-                PreparedStatement loadStatement = con.prepareStatement("SELECT * FROM " + PREMIUM_TABLE
-                        + " WHERE `Name`=? LIMIT 1");
-                loadStatement.setString(1, name);
-
-                ResultSet resultSet = loadStatement.executeQuery();
-                if (resultSet.next()) {
-                    long userId = resultSet.getInt(1);
-
-                    String unparsedUUID = resultSet.getString(2);
-                    UUID uuid;
-                    if (unparsedUUID == null) {
-                        uuid = null;
-                    } else {
-                        uuid = FastLoginBungee.parseId(unparsedUUID);
-                    }
-
-//                    String name = resultSet.getString(3);
-                    boolean premium = resultSet.getBoolean(4);
-                    String lastIp = resultSet.getString(5);
-                    long lastLogin = resultSet.getTimestamp(6).getTime();
-                    PlayerProfile playerProfile = new PlayerProfile(userId, uuid, name, premium, lastIp, lastLogin);
-                    profileCache.put(name, playerProfile);
-                    return playerProfile;
-                } else {
-                    PlayerProfile crackedProfile = new PlayerProfile(null, name, false, "");
-                    profileCache.put(name, crackedProfile);
-                    return crackedProfile;
-                }
-            } catch (SQLException sqlEx) {
-                plugin.getLogger().log(Level.SEVERE, "Failed to query profile", sqlEx);
-            } finally {
-                closeQuietly(con);
-            }
-        }
-
-        return null;
-    }
-
-    public boolean save(PlayerProfile playerProfile) {
-        Connection con = null;
-        try {
-            con = dataSource.getConnection();
-
-            UUID uuid = playerProfile.getUuid();
-
-            if (playerProfile.getUserId() == -1) {
-                PreparedStatement saveStatement = con.prepareStatement("INSERT INTO " + PREMIUM_TABLE
-                        + " (UUID, Name, Premium, LastIp) VALUES (?, ?, ?, ?)", Statement.RETURN_GENERATED_KEYS);
-
-                if (uuid == null) {
-                    saveStatement.setString(1, null);
-                } else {
-                    saveStatement.setString(1, uuid.toString().replace("-", ""));
-                }
-
-                saveStatement.setString(2, playerProfile.getPlayerName());
-                saveStatement.setBoolean(3, playerProfile.isPremium());
-                saveStatement.setString(4, playerProfile.getLastIp());
-                saveStatement.execute();
-
-                ResultSet generatedKeys = saveStatement.getGeneratedKeys();
-                if (generatedKeys != null && generatedKeys.next()) {
-                    playerProfile.setUserId(generatedKeys.getInt(1));
-                }
-            } else {
-                PreparedStatement saveStatement = con.prepareStatement("UPDATE " + PREMIUM_TABLE
-                        + " SET UUID=?, Name=?, Premium=?, LastIp=?, LastLogin=CURRENT_TIMESTAMP WHERE UserID=?");
-
-                if (uuid == null) {
-                    saveStatement.setString(1, null);
-                } else {
-                    saveStatement.setString(1, uuid.toString().replace("-", ""));
-                }
-
-                saveStatement.setString(2, playerProfile.getPlayerName());
-                saveStatement.setBoolean(3, playerProfile.isPremium());
-                saveStatement.setString(4, playerProfile.getLastIp());
-//                saveStatement.setTimestamp(5, new Timestamp(playerProfile.getLastLogin()));
-
-                saveStatement.setLong(5, playerProfile.getUserId());
-                saveStatement.execute();
-            }
-
-            return true;
-        } catch (SQLException ex) {
-            plugin.getLogger().log(Level.SEVERE, "Failed to save playerProfile", ex);
-        } finally {
-            closeQuietly(con);
-        }
-
-        return false;
-    }
-
-    public void close() {
-        dataSource.close();
-        profileCache.clear();
-    }
-
-    private void closeQuietly(Connection con) {
-        if (con != null) {
-            try {
-                con.close();
-            } catch (SQLException sqlEx) {
-                plugin.getLogger().log(Level.SEVERE, "Failed to close connection", sqlEx);
-            }
-        }
-    }
-}

bungee/src/main/java/com/github/games647/fastlogin/bungee/hooks/BungeeAuthHook.java

@@ -4,6 +4,7 @@ import java.lang.reflect.Method;
 import java.text.SimpleDateFormat;
 import java.util.Date;
 import java.util.Random;
+import java.util.logging.Level;
 
 import me.vik1395.BungeeAuth.ListenerClass;
 import me.vik1395.BungeeAuth.Main;
@@ -41,7 +42,7 @@ public class BungeeAuthHook implements BungeeAuthPlugin {
             //proparly not thread-safe
             ListenerClass.prelogin.get(player.getName()).cancel();
         } catch (Exception ex) {
-            Main.plugin.getLogger().severe("[BungeeAuth] Error force loging in player");
+            Main.plugin.getLogger().log(Level.SEVERE, "Error force loging in player", ex);
             return false;
         }
 
@@ -86,7 +87,7 @@ public class BungeeAuthHook implements BungeeAuthPlugin {
             //proparly not thread-safe
             forceLogin(player);
         } catch (Exception ex) {
-            Main.plugin.getLogger().severe("[BungeeAuth] Error when creating a new player in the Database");
+            Main.plugin.getLogger().log(Level.SEVERE, "[BungeeAuth] Error when creating a new player in the Database", ex);
             return false;
         }
 
@@ -95,7 +96,7 @@ public class BungeeAuthHook implements BungeeAuthPlugin {
 
     //pail ;(
     private void callProtected(String methodName, Class<?>[] parameterTypes, Object[] arguments) throws Exception {
-        Class<? extends Tables> tableClass = databaseConnection.getClass();
+        Class<Tables> tableClass = Tables.class;
 
         Method method = tableClass.getDeclaredMethod(methodName, parameterTypes);
         method.setAccessible(true);

bungee/src/main/java/com/github/games647/fastlogin/bungee/listener/PlayerConnectionListener.java

@@ -1,9 +1,10 @@
 package com.github.games647.fastlogin.bungee.listener;
 
 import com.github.games647.fastlogin.bungee.FastLoginBungee;
-import com.github.games647.fastlogin.bungee.ForceLoginTask;
-import com.github.games647.fastlogin.bungee.PlayerProfile;
-import com.github.games647.fastlogin.bungee.hooks.BungeeAuthPlugin;
+import com.github.games647.fastlogin.bungee.tasks.AsyncPremiumCheck;
+import com.github.games647.fastlogin.bungee.tasks.ForceLoginTask;
+import com.github.games647.fastlogin.core.LoginSession;
+import com.github.games647.fastlogin.core.PlayerProfile;
 import com.google.common.base.Charsets;
 
 import java.lang.reflect.Field;
@@ -13,7 +14,8 @@ import java.util.logging.Level;
 import net.md_5.bungee.api.ProxyServer;
 import net.md_5.bungee.api.connection.PendingConnection;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
-import net.md_5.bungee.api.event.PostLoginEvent;
+import net.md_5.bungee.api.event.LoginEvent;
+import net.md_5.bungee.api.event.PlayerDisconnectEvent;
 import net.md_5.bungee.api.event.PreLoginEvent;
 import net.md_5.bungee.api.event.ServerConnectedEvent;
 import net.md_5.bungee.api.plugin.Listener;
@@ -21,6 +23,7 @@ import net.md_5.bungee.connection.InitialHandler;
 import net.md_5.bungee.connection.LoginResult;
 import net.md_5.bungee.connection.LoginResult.Property;
 import net.md_5.bungee.event.EventHandler;
+import net.md_5.bungee.event.EventPriority;
 
 /**
  * Enables online mode logins for specified users and sends
@@ -36,74 +39,47 @@ public class PlayerConnectionListener implements Listener {
     }
 
     @EventHandler
-    public void onPreLogin(final PreLoginEvent preLoginEvent) {
+    public void onPreLogin(PreLoginEvent preLoginEvent) {
         if (preLoginEvent.isCancelled()) {
             return;
         }
 
         preLoginEvent.registerIntent(plugin);
-        ProxyServer.getInstance().getScheduler().runAsync(plugin, new Runnable() {
-            @Override
-            public void run() {
-                PendingConnection connection = preLoginEvent.getConnection();
-                String username = connection.getName();
-                try {
-                    PlayerProfile playerProfile = plugin.getStorage().getProfile(username, true);
-                    if (playerProfile != null) {
-                        if (playerProfile.isPremium()) {
-                            if (playerProfile.getUserId() != -1) {
-                                connection.setOnlineMode(true);
-                            }
-                        } else if (playerProfile.getUserId() == -1) {
-                            //user not exists in the db
-                            BungeeAuthPlugin authPlugin = plugin.getBungeeAuthPlugin();
-                            if (plugin.getConfiguration().getBoolean("autoRegister")
-                                    && (authPlugin == null || !authPlugin.isRegistered(username))) {
-                                UUID premiumUUID = plugin.getMojangApiConnector().getPremiumUUID(username);
-                                if (premiumUUID != null) {
-                                    plugin.getLogger().log(Level.FINER, "Player {0} uses a premium username", username);
-                                    connection.setOnlineMode(true);
-                                    plugin.getPendingAutoRegister().put(connection, new Object());
-                                }
-                            }
-                        }
-                    }
-                } catch (Exception ex) {
-                    plugin.getLogger().log(Level.SEVERE, "Failed to check premium state", ex);
-                } finally {
-                    preLoginEvent.completeIntent(plugin);
-                }
-            }
-        });
+        ProxyServer.getInstance().getScheduler().runAsync(plugin, new AsyncPremiumCheck(plugin, preLoginEvent));
     }
 
-    @EventHandler
-    public void onLogin(PostLoginEvent loginEvent) {
-        ProxiedPlayer player = loginEvent.getPlayer();
-        PendingConnection connection = player.getPendingConnection();
+    @EventHandler(priority = EventPriority.LOW)
+    public void onLogin(LoginEvent loginEvent) {
+        if (loginEvent.isCancelled()) {
+            return;
+        }
+
+        //use the loginevent instead of the postlogin event in order to send the loginsuccess packet to the client
+        //with the offline uuid this makes it possible to set the skin then
+        PendingConnection connection = loginEvent.getConnection();
         String username = connection.getName();
         if (connection.isOnlineMode()) {
-            PlayerProfile playerProfile = plugin.getStorage().getProfile(player.getName(), false);
-            playerProfile.setUuid(player.getUniqueId());
+            LoginSession session = plugin.getSession().get(connection);
+            PlayerProfile playerProfile = session.getProfile();
+            playerProfile.setUuid(connection.getUniqueId());
 
             //bungeecord will do this automatically so override it on disabled option
             InitialHandler initialHandler = (InitialHandler) connection;
-            if (!plugin.getConfiguration().getBoolean("premiumUuid")) {
+            if (!plugin.getConfig().getBoolean("premiumUuid")) {
                 try {
                     UUID offlineUUID = UUID.nameUUIDFromBytes(("OfflinePlayer:" + username).getBytes(Charsets.UTF_8));
 
-                    Field idField = initialHandler.getClass().getDeclaredField("uniqueId");
+                    //bungeecord doesn't support overriding the premium uuid
+                    //so we have to do it with reflection
+                    Field idField = InitialHandler.class.getDeclaredField("uniqueId");
                     idField.setAccessible(true);
                     idField.set(connection, offlineUUID);
-
-                    //bungeecord doesn't support overriding the premium uuid
-//                    connection.setUniqueId(offlineUUID);
                 } catch (NoSuchFieldException | IllegalAccessException ex) {
                     plugin.getLogger().log(Level.SEVERE, "Failed to set offline uuid", ex);
                 }
             }
 
-            if (!plugin.getConfiguration().getBoolean("forwardSkin")) {
+            if (!plugin.getConfig().getBoolean("forwardSkin")) {
                 //this is null on offline mode
                 LoginResult loginProfile = initialHandler.getLoginProfile();
                 if (loginProfile != null) {
@@ -119,4 +95,11 @@ public class PlayerConnectionListener implements Listener {
         ForceLoginTask loginTask = new ForceLoginTask(plugin, player, serverConnectedEvent.getServer());
         ProxyServer.getInstance().getScheduler().runAsync(plugin, loginTask);
     }
+
+    @EventHandler
+    public void onDisconnect(PlayerDisconnectEvent disconnectEvent) {
+        ProxiedPlayer player = disconnectEvent.getPlayer();
+        plugin.getSession().remove(player.getPendingConnection());
+        plugin.getPendingConfirms().remove(player.getUniqueId());
+    }
 }

bungee/src/main/java/com/github/games647/fastlogin/bungee/listener/PluginMessageListener.java

@@ -1,11 +1,13 @@
 package com.github.games647.fastlogin.bungee.listener;
 
+import com.github.games647.fastlogin.bungee.BungeeLoginSession;
 import com.github.games647.fastlogin.bungee.FastLoginBungee;
-import com.github.games647.fastlogin.bungee.PlayerProfile;
+import com.github.games647.fastlogin.bungee.tasks.AsyncToggleMessage;
+import com.github.games647.fastlogin.core.PlayerProfile;
 import com.google.common.io.ByteArrayDataInput;
 import com.google.common.io.ByteStreams;
+import java.util.Arrays;
 
-import net.md_5.bungee.api.ChatColor;
 import net.md_5.bungee.api.ProxyServer;
 import net.md_5.bungee.api.chat.TextComponent;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
@@ -40,71 +42,50 @@ public class PluginMessageListener implements Listener {
     }
 
     private void readMessage(PluginMessageEvent pluginMessageEvent) {
-        byte[] data = pluginMessageEvent.getData();
-        ByteArrayDataInput dataInput = ByteStreams.newDataInput(data);
-        String subchannel = dataInput.readUTF();
-
+        //so that we can safely process this in the background
+        final byte[] data = Arrays.copyOf(pluginMessageEvent.getData(), pluginMessageEvent.getData().length);
         final ProxiedPlayer forPlayer = (ProxiedPlayer) pluginMessageEvent.getReceiver();
-        if ("ON".equals(subchannel)) {
-            final String playerName = dataInput.readUTF();
 
-            ProxyServer.getInstance().getScheduler().runAsync(plugin, new Runnable() {
-                @Override
-                public void run() {
-                    PlayerProfile playerProfile = plugin.getStorage().getProfile(playerName, true);
-                    if (playerProfile.isPremium()) {
-                        if (forPlayer.isConnected()) {
-                            TextComponent textComponent = new TextComponent("You are already on the premium list");
-                            textComponent.setColor(ChatColor.DARK_RED);
-                            forPlayer.sendMessage(textComponent);
-                        }
+        ProxyServer.getInstance().getScheduler().runAsync(plugin, new Runnable() {
+            @Override
+            public void run() {
+                ByteArrayDataInput dataInput = ByteStreams.newDataInput(data);
+                String subchannel = dataInput.readUTF();
+                if ("ON".equals(subchannel)) {
+                    String playerName = dataInput.readUTF();
 
+                    if (playerName.equals(forPlayer.getName()) && plugin.getConfig().getBoolean("premium-warning")
+                            && !plugin.getPendingConfirms().contains(forPlayer.getUniqueId())) {
+                        String message = plugin.getCore().getMessage("premium-warning");
+                        forPlayer.sendMessage(TextComponent.fromLegacyText(message));
+                        plugin.getPendingConfirms().add(forPlayer.getUniqueId());
                         return;
                     }
 
-                    playerProfile.setPremium(true);
-                    //todo: set uuid
-                    plugin.getStorage().save(playerProfile);
-                    TextComponent textComponent = new TextComponent("Added to the list of premium players");
-                    textComponent.setColor(ChatColor.DARK_GREEN);
-                    forPlayer.sendMessage(textComponent);
-                }
-            });
-        } else if ("OFF".equals(subchannel)) {
-            final String playerName = dataInput.readUTF();
+                    plugin.getPendingConfirms().remove(forPlayer.getUniqueId());
+                    AsyncToggleMessage task = new AsyncToggleMessage(plugin, forPlayer, playerName, true);
+                    ProxyServer.getInstance().getScheduler().runAsync(plugin, task);
+                } else if ("OFF".equals(subchannel)) {
+                    String playerName = dataInput.readUTF();
 
-            ProxyServer.getInstance().getScheduler().runAsync(plugin, new Runnable() {
-                @Override
-                public void run() {
-                    PlayerProfile playerProfile = plugin.getStorage().getProfile(playerName, true);
-                    if (!playerProfile.isPremium()) {
-                        if (forPlayer.isConnected()) {
-                            TextComponent textComponent = new TextComponent("You are not in the premium list");
-                            textComponent.setColor(ChatColor.DARK_RED);
-                            forPlayer.sendMessage(textComponent);
+                    AsyncToggleMessage task = new AsyncToggleMessage(plugin, forPlayer, playerName, false);
+                    ProxyServer.getInstance().getScheduler().runAsync(plugin, task);
+                } else if ("SUCCESS".equals(subchannel)) {
+                    if (forPlayer.getPendingConnection().isOnlineMode()) {
+                        //bukkit module successfully received and force logged in the user
+                        //update only on success to prevent corrupt data
+                        BungeeLoginSession loginSession = plugin.getSession().get(forPlayer.getPendingConnection());
+                        PlayerProfile playerProfile = loginSession.getProfile();
+                        loginSession.setRegistered(true);
+
+                        if (!loginSession.isAlreadySaved()) {
+                            playerProfile.setPremium(true);
+                            plugin.getCore().getStorage().save(playerProfile);
+                            loginSession.setAlreadySaved(true);
                         }
-
-                        return;
                     }
-
-                    playerProfile.setPremium(false);
-                    playerProfile.setUuid(null);
-                    plugin.getStorage().save(playerProfile);
-                    TextComponent textComponent = new TextComponent("Removed to the list of premium players");
-                    textComponent.setColor(ChatColor.DARK_GREEN);
-                    forPlayer.sendMessage(textComponent);
                 }
-            });
-        } else if ("SUCCESS".equals(subchannel)) {
-            if (forPlayer.getPendingConnection().isOnlineMode()) {
-                //bukkit module successfully received and force logged in the user
-                //update only on success to prevent corrupt data
-                PlayerProfile playerProfile = plugin.getStorage().getProfile(forPlayer.getName(), false);
-                playerProfile.setPremium(true);
-                //we override this in the loginevent
-//                    playerProfile.setUuid(forPlayer.getUniqueId());
-                plugin.getStorage().save(playerProfile);
             }
-        }
+        });
     }
 }

bungee/src/main/java/com/github/games647/fastlogin/bungee/tasks/AsyncPremiumCheck.java

@@ -0,0 +1,93 @@
+package com.github.games647.fastlogin.bungee.tasks;
+
+import com.github.games647.fastlogin.bungee.BungeeLoginSession;
+import com.github.games647.fastlogin.bungee.FastLoginBungee;
+import com.github.games647.fastlogin.bungee.hooks.BungeeAuthPlugin;
+import com.github.games647.fastlogin.core.PlayerProfile;
+
+import java.util.UUID;
+import java.util.logging.Level;
+
+import net.md_5.bungee.api.connection.PendingConnection;
+import net.md_5.bungee.api.event.PreLoginEvent;
+
+public class AsyncPremiumCheck implements Runnable {
+
+    private final FastLoginBungee plugin;
+    private final PreLoginEvent preLoginEvent;
+
+    public AsyncPremiumCheck(FastLoginBungee plugin, PreLoginEvent preLoginEvent) {
+        this.plugin = plugin;
+        this.preLoginEvent = preLoginEvent;
+    }
+
+    @Override
+    public void run() {
+        PendingConnection connection = preLoginEvent.getConnection();
+        plugin.getSession().remove(connection);
+
+        String username = connection.getName();
+        try {
+            PlayerProfile profile = plugin.getCore().getStorage().loadProfile(username);
+            if (profile == null) {
+                return;
+            }
+
+            if (profile.getUserId() == -1) {
+                UUID premiumUUID = null;
+                if (plugin.getConfig().getBoolean("nameChangeCheck") || plugin.getConfig().getBoolean("autoRegister")) {
+                    premiumUUID = plugin.getCore().getMojangApiConnector().getPremiumUUID(username);
+                }
+
+                if (premiumUUID == null
+                        || (!checkNameChange(premiumUUID, connection, username)
+                            && !checkPremiumName(username, connection, profile))) {
+                    //nothing detected the player as premium -> start a cracked session
+                    plugin.getSession().put(connection, new BungeeLoginSession(username, false, profile));
+                }
+            } else if (profile.isPremium()) {
+                requestPremiumLogin(connection, profile, username, true);
+            } else {
+                //Cracked session
+                plugin.getSession().put(connection, new BungeeLoginSession(username, false, profile));
+            }
+        } catch (Exception ex) {
+            plugin.getLogger().log(Level.SEVERE, "Failed to check premium state", ex);
+        } finally {
+            preLoginEvent.completeIntent(plugin);
+        }
+    }
+
+    private boolean checkPremiumName(String username, PendingConnection connection, PlayerProfile profile)
+            throws Exception {
+        BungeeAuthPlugin authPlugin = plugin.getBungeeAuthPlugin();
+        if (plugin.getConfig().getBoolean("autoRegister")
+                && (authPlugin == null || !authPlugin.isRegistered(username))) {
+            plugin.getLogger().log(Level.FINER, "Player {0} uses a premium username", username);
+            requestPremiumLogin(connection, profile, username, false);
+            return true;
+        }
+
+        return false;
+    }
+
+    private boolean checkNameChange(UUID premiumUUID, PendingConnection connection, String username) {
+        //user not exists in the db
+        if (plugin.getConfig().getBoolean("nameChangeCheck")) {
+            PlayerProfile profile = plugin.getCore().getStorage().loadProfile(premiumUUID);
+            if (profile != null) {
+                //uuid exists in the database
+                plugin.getLogger().log(Level.FINER, "Player {0} changed it's username", premiumUUID);
+                requestPremiumLogin(connection, profile, username, false);
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    private void requestPremiumLogin(PendingConnection con, PlayerProfile profile, String username, boolean register) {
+        con.setOnlineMode(true);
+        plugin.getSession().put(con, new BungeeLoginSession(username, register, profile));
+    }
+}

bungee/src/main/java/com/github/games647/fastlogin/bungee/tasks/AsyncToggleMessage.java

@@ -0,0 +1,57 @@
+package com.github.games647.fastlogin.bungee.tasks;
+
+import com.github.games647.fastlogin.bungee.FastLoginBungee;
+import com.github.games647.fastlogin.core.PlayerProfile;
+
+import net.md_5.bungee.api.chat.TextComponent;
+import net.md_5.bungee.api.connection.ProxiedPlayer;
+
+public class AsyncToggleMessage implements Runnable {
+
+    private final FastLoginBungee plugin;
+    private final ProxiedPlayer fromPlayer;
+    private final String targetPlayer;
+    private final boolean toPremium;
+
+    public AsyncToggleMessage(FastLoginBungee plugin, ProxiedPlayer fromPlayer, String targetPlayer
+            , boolean toPremium) {
+        this.plugin = plugin;
+        this.fromPlayer = fromPlayer;
+        this.targetPlayer = targetPlayer;
+        this.toPremium = toPremium;
+    }
+
+    @Override
+    public void run() {
+        if (toPremium) {
+            activatePremium();
+        } else {
+            turnOffPremium();
+        }
+    }
+
+    private void turnOffPremium() {
+        PlayerProfile playerProfile = plugin.getCore().getStorage().loadProfile(targetPlayer);
+        if (!playerProfile.isPremium()) {
+            fromPlayer.sendMessage(TextComponent.fromLegacyText(plugin.getCore().getMessage("not-premium")));
+            return;
+        }
+
+        playerProfile.setPremium(false);
+        playerProfile.setUuid(null);
+        plugin.getCore().getStorage().save(playerProfile);
+        fromPlayer.sendMessage(TextComponent.fromLegacyText(plugin.getCore().getMessage("remove-premium")));
+    }
+
+    private void activatePremium() {
+        PlayerProfile playerProfile = plugin.getCore().getStorage().loadProfile(targetPlayer);
+        if (playerProfile.isPremium()) {
+            fromPlayer.sendMessage(TextComponent.fromLegacyText(plugin.getCore().getMessage("already-exists")));
+            return;
+        }
+
+        playerProfile.setPremium(true);
+        plugin.getCore().getStorage().save(playerProfile);
+        fromPlayer.sendMessage(TextComponent.fromLegacyText(plugin.getCore().getMessage("add-premium")));
+    }
+}

bungee/src/main/java/com/github/games647/fastlogin/bungee/tasks/ForceLoginTask.java

@@ -0,0 +1,113 @@
+package com.github.games647.fastlogin.bungee.tasks;
+
+import com.github.games647.fastlogin.bungee.BungeeLoginSession;
+import com.github.games647.fastlogin.bungee.FastLoginBungee;
+import com.github.games647.fastlogin.bungee.hooks.BungeeAuthPlugin;
+import com.github.games647.fastlogin.core.PlayerProfile;
+import com.google.common.io.ByteArrayDataOutput;
+import com.google.common.io.ByteStreams;
+
+import java.util.UUID;
+import java.util.logging.Level;
+
+import net.md_5.bungee.api.connection.PendingConnection;
+import net.md_5.bungee.api.connection.ProxiedPlayer;
+import net.md_5.bungee.api.connection.Server;
+
+public class ForceLoginTask implements Runnable {
+
+    private final FastLoginBungee plugin;
+    private final ProxiedPlayer player;
+    private final Server server;
+
+    public ForceLoginTask(FastLoginBungee plugin, ProxiedPlayer player, Server server) {
+        this.plugin = plugin;
+        this.player = player;
+        this.server = server;
+    }
+
+    @Override
+    public void run() {
+        try {
+            PendingConnection pendingConnection = player.getPendingConnection();
+            BungeeLoginSession session = plugin.getSession().get(pendingConnection);
+
+            if (session == null || !player.isConnected()) {
+                plugin.getLogger().log(Level.FINE, "Invalid session player {0} proparly left the server", player);
+                return;
+            }
+
+            PlayerProfile playerProfile = session.getProfile();
+
+            //force login only on success
+            if (pendingConnection.isOnlineMode()) {
+                boolean autoRegister = session.needsRegistration();
+
+                BungeeAuthPlugin authPlugin = plugin.getBungeeAuthPlugin();
+                if (authPlugin == null) {
+                    //save will happen on success message from bukkit
+                    sendBukkitLoginNotification(autoRegister);
+                } else if (session.needsRegistration()) {
+                    forceRegister(session, authPlugin);
+                } else if (authPlugin.forceLogin(player)) {
+                    forceLogin(session, authPlugin);
+                }
+            } else {
+                //cracked player
+                if (!session.isAlreadySaved()) {
+                    playerProfile.setPremium(false);
+                    plugin.getCore().getStorage().save(playerProfile);
+                    session.setAlreadySaved(true);
+                }
+            }
+        } catch (Exception ex) {
+            plugin.getLogger().log(Level.INFO, "ERROR ON FORCE LOGIN", ex);
+        }
+    }
+
+    private void forceRegister(BungeeLoginSession session, BungeeAuthPlugin authPlugin) {
+        String password = plugin.generateStringPassword();
+        if (session.isAlreadySaved() || authPlugin.forceRegister(player, password)) {
+            //save will happen on success message from bukkit
+            sendBukkitLoginNotification(true);
+            String message = plugin.getCore().getMessage("auto-register");
+            if (message != null) {
+                message = message.replace("%password", password);
+                player.sendMessage(message);
+            }
+        }
+    }
+
+    private void forceLogin(BungeeLoginSession session, BungeeAuthPlugin authPlugin) {
+        if (session.isAlreadySaved() || authPlugin.forceLogin(player)) {
+            //save will happen on success message from bukkit
+            sendBukkitLoginNotification(false);
+            String message = plugin.getCore().getMessage("auto-login");
+            if (message != null) {
+                player.sendMessage(message);
+            }
+        }
+    }
+
+    private void sendBukkitLoginNotification(boolean autoRegister) {
+        ByteArrayDataOutput dataOutput = ByteStreams.newDataOutput();
+        //subchannel name
+        if (autoRegister) {
+            dataOutput.writeUTF("AUTO_REGISTER");
+        } else {
+            dataOutput.writeUTF("AUTO_LOGIN");
+        }
+
+        //Data is sent through a random player. We have to tell the Bukkit version of this plugin the target
+        dataOutput.writeUTF(player.getName());
+
+        //proxy identifier to check if it's a acceptable proxy
+        UUID proxyId = UUID.fromString(plugin.getProxy().getConfig().getUuid());
+        dataOutput.writeLong(proxyId.getMostSignificantBits());
+        dataOutput.writeLong(proxyId.getLeastSignificantBits());
+
+        if (server != null) {
+            server.sendData(plugin.getDescription().getName(), dataOutput.toByteArray());
+        }
+    }
+}

core/pom.xml

@@ -0,0 +1,32 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>com.github.games647</groupId>
+        <artifactId>fastlogin</artifactId>
+        <version>1.7.1</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>fastlogin.core</artifactId>
+    <packaging>jar</packaging>
+
+    <name>FastLoginCore</name>
+
+    <dependencies>
+        <!--Database pooling-->
+        <dependency>
+            <groupId>com.zaxxer</groupId>
+            <artifactId>HikariCP</artifactId>
+            <version>2.4.7</version>
+        </dependency>
+
+        <!--Logging framework implements slf4j which is required by hikari-->
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-jdk14</artifactId>
+            <version>1.7.21</version>
+        </dependency>
+    </dependencies>
+</project>

core/src/main/java/com/github/games647/fastlogin/core/AuthStorage.java

@@ -0,0 +1,267 @@
+package com.github.games647.fastlogin.core;
+
+import com.zaxxer.hikari.HikariConfig;
+import com.zaxxer.hikari.HikariDataSource;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.UUID;
+import java.util.logging.Level;
+
+public class AuthStorage {
+
+    private static final String PREMIUM_TABLE = "premium";
+
+    private final FastLoginCore core;
+    private final HikariDataSource dataSource;
+
+    public AuthStorage(FastLoginCore core, String driver, String host, int port, String databasePath
+            , String user, String pass) {
+        this.core = core;
+
+        HikariConfig databaseConfig = new HikariConfig();
+        databaseConfig.setUsername(user);
+        databaseConfig.setPassword(pass);
+        databaseConfig.setDriverClassName(driver);
+        databaseConfig.setThreadFactory(core.getThreadFactory());
+
+        databasePath = databasePath.replace("{pluginDir}", core.getDataFolder().getAbsolutePath());
+
+        String jdbcUrl = "jdbc:";
+        if (driver.contains("sqlite")) {
+            jdbcUrl += "sqlite" + "://" + databasePath;
+            databaseConfig.setConnectionTestQuery("SELECT 1");
+        } else {
+            jdbcUrl += "mysql" + "://" + host + ':' + port + '/' + databasePath;
+        }
+
+        databaseConfig.setJdbcUrl(jdbcUrl);
+        this.dataSource = new HikariDataSource(databaseConfig);
+    }
+
+    public void createTables() throws SQLException {
+        Connection con = null;
+        Statement createStmt = null;
+        try {
+            con = dataSource.getConnection();
+            createStmt = con.createStatement();
+
+            String createDataStmt = "CREATE TABLE IF NOT EXISTS " + PREMIUM_TABLE + " ("
+                    + "UserID INTEGER PRIMARY KEY AUTO_INCREMENT, "
+                    + "UUID CHAR(36), "
+                    + "Name VARCHAR(16) NOT NULL, "
+                    + "Premium BOOLEAN NOT NULL, "
+                    + "LastIp VARCHAR(255) NOT NULL, "
+                    + "LastLogin TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, "
+                    //the premium shouldn't steal the cracked account by changing the name
+                    + "UNIQUE (Name) "
+                    + ")";
+
+            if (dataSource.getJdbcUrl().contains("sqlite")) {
+                createDataStmt = createDataStmt.replace("AUTO_INCREMENT", "AUTOINCREMENT");
+            }
+
+            createStmt.executeUpdate(createDataStmt);
+
+            //drop the old unique uuid index
+            try {
+                if (dataSource.getJdbcUrl().contains("sqlite")) {
+                    String tempTableCreate = createDataStmt.replace(PREMIUM_TABLE, PREMIUM_TABLE + "_TEMP")
+                            //if we already imported the table fail here
+                            .replace("IF NOT EXISTS", "");
+                    //create a temp table insert it there and then back
+                    createStmt.executeUpdate(tempTableCreate);
+                    createStmt.executeUpdate("INSERT INTO " + PREMIUM_TABLE + "_TEMP SELECT * FROM " + PREMIUM_TABLE);
+
+                    createStmt.executeUpdate("DROP TABLE " + PREMIUM_TABLE);
+                    createStmt.executeUpdate(createDataStmt);
+
+                    //insert it back into the new table
+                    createStmt.executeUpdate("INSERT INTO " + PREMIUM_TABLE + " SELECT * FROM " + PREMIUM_TABLE + "_TEMP");
+                } else {
+                    createStmt.executeUpdate("ALTER TABLE premium DROP INDEX UUID");
+                }
+            } catch (SQLException sqlEx) {
+                core.getLogger().log(Level.FINE, "Error dropping unique uuid index", sqlEx);
+            }
+
+            try {
+                createStmt.executeUpdate("CREATE INDEX uuid_idx on premium (UUID)");
+            } catch (SQLException sqlEx) {
+                core.getLogger().log(Level.FINE, "Error creating uuid index", sqlEx);
+            }
+        } finally {
+            closeQuietly(con);
+            closeQuietly(createStmt);
+        }
+    }
+
+    public PlayerProfile loadProfile(String name) {
+        Connection con = null;
+        PreparedStatement loadStmt = null;
+        ResultSet resultSet = null;
+        try {
+            con = dataSource.getConnection();
+            loadStmt = con.prepareStatement("SELECT * FROM " + PREMIUM_TABLE + " WHERE Name=? LIMIT 1");
+            loadStmt.setString(1, name);
+
+            resultSet = loadStmt.executeQuery();
+            if (resultSet.next()) {
+                long userId = resultSet.getInt(1);
+
+                String unparsedUUID = resultSet.getString(2);
+                UUID uuid;
+                if (unparsedUUID == null) {
+                    uuid = null;
+                } else {
+                    uuid = FastLoginCore.parseId(unparsedUUID);
+                }
+
+                boolean premium = resultSet.getBoolean(4);
+                String lastIp = resultSet.getString(5);
+                long lastLogin = resultSet.getTimestamp(6).getTime();
+                PlayerProfile playerProfile = new PlayerProfile(userId, uuid, name, premium, lastIp, lastLogin);
+                return playerProfile;
+            } else {
+                PlayerProfile crackedProfile = new PlayerProfile(null, name, false, "");
+                return crackedProfile;
+            }
+        } catch (SQLException sqlEx) {
+            core.getLogger().log(Level.SEVERE, "Failed to query profile", sqlEx);
+        } finally {
+            closeQuietly(con);
+            closeQuietly(loadStmt);
+            closeQuietly(resultSet);
+        }
+
+        return null;
+    }
+
+    public PlayerProfile loadProfile(UUID uuid) {
+        Connection con = null;
+        PreparedStatement loadStmt = null;
+        ResultSet resultSet = null;
+        try {
+            con = dataSource.getConnection();
+            loadStmt = con.prepareStatement("SELECT * FROM " + PREMIUM_TABLE + " WHERE UUID=? LIMIT 1");
+            loadStmt.setString(1, uuid.toString().replace("-", ""));
+
+            resultSet = loadStmt.executeQuery();
+            if (resultSet.next()) {
+                long userId = resultSet.getInt(1);
+
+                String name = resultSet.getString(3);
+                boolean premium = resultSet.getBoolean(4);
+                String lastIp = resultSet.getString(5);
+                long lastLogin = resultSet.getTimestamp(6).getTime();
+                PlayerProfile playerProfile = new PlayerProfile(userId, uuid, name, premium, lastIp, lastLogin);
+                return playerProfile;
+            }
+        } catch (SQLException sqlEx) {
+            core.getLogger().log(Level.SEVERE, "Failed to query profile", sqlEx);
+        } finally {
+            closeQuietly(con);
+            closeQuietly(loadStmt);
+            closeQuietly(resultSet);
+        }
+
+        return null;
+    }
+
+    public boolean save(PlayerProfile playerProfile) {
+        Connection con = null;
+        PreparedStatement updateStmt = null;
+        PreparedStatement saveStmt = null;
+
+        ResultSet generatedKeys = null;
+        try {
+            con = dataSource.getConnection();
+
+            UUID uuid = playerProfile.getUuid();
+            
+            if (playerProfile.getUserId() == -1) {
+                if (uuid != null) {
+                    //User was authenticated with a premium authentication, so it's possible that the player is premium
+                    updateStmt = con.prepareStatement("UPDATE " + PREMIUM_TABLE
+                            + " SET NAME=?, LastIp=?, LastLogin=CURRENT_TIMESTAMP"
+                            + " WHERE UUID=?");
+
+                    updateStmt.setString(1, playerProfile.getPlayerName());
+                    updateStmt.setString(2, playerProfile.getLastIp());
+                    updateStmt.setString(3, uuid.toString().replace("-", ""));
+
+                    int affectedRows = updateStmt.executeUpdate();
+                    if (affectedRows > 0) {
+                        //username changed and we updated the existing database record
+                        //so we don't need to run an insert
+                        return true;
+                    }
+                }
+
+                saveStmt = con.prepareStatement("INSERT INTO " + PREMIUM_TABLE
+                        + " (UUID, Name, Premium, LastIp) VALUES (?, ?, ?, ?) ", Statement.RETURN_GENERATED_KEYS);
+
+                if (uuid == null) {
+                    saveStmt.setString(1, null);
+                } else {
+                    saveStmt.setString(1, uuid.toString().replace("-", ""));
+                }
+
+                saveStmt.setString(2, playerProfile.getPlayerName());
+                saveStmt.setBoolean(3, playerProfile.isPremium());
+                saveStmt.setString(4, playerProfile.getLastIp());
+
+                saveStmt.execute();
+
+                generatedKeys = saveStmt.getGeneratedKeys();
+                if (generatedKeys != null && generatedKeys.next()) {
+                    playerProfile.setUserId(generatedKeys.getInt(1));
+                }
+            } else {
+                saveStmt = con.prepareStatement("UPDATE " + PREMIUM_TABLE
+                        + " SET UUID=?, Name=?, Premium=?, LastIp=?, LastLogin=CURRENT_TIMESTAMP WHERE UserID=?");
+
+                if (uuid == null) {
+                    saveStmt.setString(1, null);
+                } else {
+                    saveStmt.setString(1, uuid.toString().replace("-", ""));
+                }
+
+                saveStmt.setString(2, playerProfile.getPlayerName());
+                saveStmt.setBoolean(3, playerProfile.isPremium());
+                saveStmt.setString(4, playerProfile.getLastIp());
+
+                saveStmt.setLong(5, playerProfile.getUserId());
+                saveStmt.execute();
+            }
+
+            return true;
+        } catch (SQLException ex) {
+            core.getLogger().log(Level.SEVERE, "Failed to save playerProfile", ex);
+        } finally {
+            closeQuietly(con);
+            closeQuietly(updateStmt);
+            closeQuietly(saveStmt);
+            closeQuietly(generatedKeys);
+        }
+
+        return false;
+    }
+
+    public void close() {
+        dataSource.close();
+    }
+
+    private void closeQuietly(AutoCloseable closeable) {
+        if (closeable != null) {
+            try {
+                closeable.close();
+            } catch (Exception closeEx) {
+                core.getLogger().log(Level.SEVERE, "Failed to close connection", closeEx);
+            }
+        }
+    }
+}

core/src/main/java/com/github/games647/fastlogin/core/BalancedSSLFactory.java

@@ -0,0 +1,80 @@
+package com.github.games647.fastlogin.core;
+
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.Socket;
+import java.net.UnknownHostException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;
+
+import javax.net.ssl.SSLSocketFactory;
+
+public class BalancedSSLFactory extends SSLSocketFactory {
+
+    private final SSLSocketFactory oldFactory;
+
+    //in order to be thread-safe
+    private final List<InetAddress> localAddresses;
+
+    private final Object lock = new Object();
+
+    private int id;
+
+    public BalancedSSLFactory(SSLSocketFactory oldFactory, Set<InetAddress> localAddresses) {
+        this.oldFactory = oldFactory;
+        this.localAddresses = new ArrayList<>(localAddresses);
+    }
+
+    @Override
+    public String[] getDefaultCipherSuites() {
+        return oldFactory.getDefaultCipherSuites();
+    }
+
+    @Override
+    public String[] getSupportedCipherSuites() {
+        return oldFactory.getSupportedCipherSuites();
+    }
+
+    @Override
+    public Socket createSocket(Socket socket, String host, int port, boolean autoclose) throws IOException {
+        return oldFactory.createSocket(host, port, getNextLocalAddress(), 0);
+    }
+
+    @Override
+    public Socket createSocket(String host, int port) throws IOException, UnknownHostException {
+        return oldFactory.createSocket(host, port, getNextLocalAddress(), 0);
+    }
+
+    @Override
+    public Socket createSocket(String host, int port, InetAddress localAddress, int localPort)
+            throws IOException, UnknownHostException {
+        //default
+        return oldFactory.createSocket(host, port, localAddress, localPort);
+    }
+
+    @Override
+    public Socket createSocket(InetAddress host, int port) throws IOException {
+        return oldFactory.createSocket(host, port, getNextLocalAddress(), 0);
+    }
+
+    @Override
+    public Socket createSocket(InetAddress host, int port, InetAddress local, int localPort) throws IOException {
+        //Default
+        return oldFactory.createSocket(host, port, local, localPort);
+    }
+
+    private InetAddress getNextLocalAddress() {
+        int next;
+        synchronized (lock) {
+            next = id;
+            id++;
+            if (next == Integer.MAX_VALUE) {
+                id = 0;
+            }
+        }
+
+        int index = next % localAddresses.size();
+        return localAddresses.get(index);
+    }
+}

core/src/main/java/com/github/games647/fastlogin/core/FastLoginCore.java

@@ -0,0 +1,67 @@
+package com.github.games647.fastlogin.core;
+
+import java.io.File;
+import java.util.Map;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ThreadFactory;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+public abstract class FastLoginCore {
+    
+    public static UUID parseId(String withoutDashes) {
+        return UUID.fromString(withoutDashes.substring(0, 8)
+                + "-" + withoutDashes.substring(8, 12)
+                + "-" + withoutDashes.substring(12, 16)
+                + "-" + withoutDashes.substring(16, 20)
+                + "-" + withoutDashes.substring(20, 32));
+    }
+
+    protected final Map<String, String> localeMessages = new ConcurrentHashMap<>();
+    private MojangApiConnector mojangApiConnector;
+    private AuthStorage storage;
+
+    public void setMojangApiConnector(MojangApiConnector mojangApiConnector) {
+        this.mojangApiConnector = mojangApiConnector;
+    }
+
+    public MojangApiConnector getMojangApiConnector() {
+        return mojangApiConnector;
+    }
+
+    public AuthStorage getStorage() {
+        return storage;
+    }
+
+    public abstract File getDataFolder();
+
+    public abstract Logger getLogger();
+
+    public abstract ThreadFactory getThreadFactory();
+
+    public String getMessage(String key) {
+        return localeMessages.get(key);
+    }
+
+    public abstract void loadMessages();
+
+    public abstract void loadConfig();
+
+    public boolean setupDatabase(String driver, String host, int port, String database, String user, String password) {
+        storage = new AuthStorage(this, driver, host, port, database, user, password);
+        try {
+            storage.createTables();
+            return true;
+        } catch (Exception ex) {
+            getLogger().log(Level.SEVERE, "Failed to setup database. Disabling plugin...", ex);
+            return false;
+        }
+    }
+
+    public void close() {
+        if (storage != null) {
+            storage.close();
+        }
+    }
+}

core/src/main/java/com/github/games647/fastlogin/core/LoginSession.java

@@ -0,0 +1,31 @@
+package com.github.games647.fastlogin.core;
+
+public class LoginSession {
+
+    private final String username;
+    private final PlayerProfile profile;
+    protected boolean registered;
+
+    public LoginSession(String username, boolean registered, PlayerProfile profile) {
+        this.username = username;
+        this.registered = registered;
+        this.profile = profile;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    /**
+     * This value is always false if we authenticate the player with a cracked authentication
+     *
+     * @return
+     */
+    public boolean needsRegistration() {
+        return !registered;
+    }
+
+    public PlayerProfile getProfile() {
+        return profile;
+    }
+}

core/src/main/java/com/github/games647/fastlogin/core/MojangApiConnector.java

@@ -0,0 +1,164 @@
+package com.github.games647.fastlogin.core;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.InetAddress;
+import java.net.URL;
+import java.net.UnknownHostException;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentMap;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import java.util.regex.Pattern;
+
+import javax.net.ssl.HttpsURLConnection;
+
+public abstract class MojangApiConnector {
+
+    //http connection, read timeout and user agent for a connection to mojang api servers
+    private static final int TIMEOUT = 3 * 1_000;
+    private static final String USER_AGENT = "Premium-Checker";
+
+    private static final String MCAPI_UUID_URL = "https://mcapi.ca/uuid/player/";
+
+    //only premium (paid account) users have a uuid from here
+    private static final String UUID_LINK = "https://api.mojang.com/users/profiles/minecraft/";
+    //this includes a-zA-Z1-9_
+    private static final String VALID_PLAYERNAME = "^\\w{2,16}$";
+
+    private static final int RATE_LIMIT_CODE = 429;
+
+    //compile the pattern only on plugin enable -> and this have to be threadsafe
+    private final Pattern playernameMatcher = Pattern.compile(VALID_PLAYERNAME);
+
+    private final ConcurrentMap<Object, Object> requests;
+    private final BalancedSSLFactory sslFactory;
+    private final int rateLimit;
+    private long lastRateLimit;
+
+    protected final Logger logger;
+
+    public MojangApiConnector(ConcurrentMap<Object, Object> requests, Logger logger, List<String> localAddresses
+            , int rateLimit) {
+        this.logger = logger;
+        this.requests = requests;
+        
+        if (rateLimit > 600) {
+            this.rateLimit = 600;
+        } else {
+            this.rateLimit = rateLimit;
+        }
+
+        if (localAddresses.isEmpty()) {
+            this.sslFactory = null;
+        } else {
+            Set<InetAddress> addresses = new HashSet<>();
+            for (String localAddress : localAddresses) {
+                try {
+                    InetAddress address = InetAddress.getByName(localAddress);
+                    if (!address.isAnyLocalAddress()) {
+                        logger.log(Level.WARNING, "Submitted IP-Address is not local", address);
+                        continue;
+                    }
+
+                    addresses.add(address);
+                } catch (UnknownHostException ex) {
+                    logger.log(Level.SEVERE, "IP-Address is unknown to us", ex);
+                }
+            }
+
+            this.sslFactory = new BalancedSSLFactory(HttpsURLConnection.getDefaultSSLSocketFactory(), addresses);
+        }
+    }
+
+    /**
+     *
+     * @param playerName
+     * @return null on non-premium
+     */
+    public UUID getPremiumUUID(String playerName) {
+        //check if it's a valid playername
+        if (playernameMatcher.matcher(playerName).matches()) {
+//            only make a API call if the name is valid existing mojang account
+
+            if (requests.size() >= rateLimit || System.currentTimeMillis() - lastRateLimit < 1_000 * 60 * 10) {
+//                plugin.getLogger().fine("STILL WAITING FOR RATE_LIMIT - TRYING Third-party API");
+                return getUUIDFromAPI(playerName);
+            }
+
+            requests.put(new Object(), new Object());
+
+            try {
+                HttpsURLConnection connection = getConnection(UUID_LINK + playerName);
+                if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
+                    BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
+                    String line = reader.readLine();
+                    if (line != null && !line.equals("null")) {
+                        return getUUIDFromJson(line);
+                    }
+                } else if (connection.getResponseCode() == RATE_LIMIT_CODE) {
+                    logger.info("RATE_LIMIT REACHED - TRYING THIRD-PARTY API");
+                    lastRateLimit = System.currentTimeMillis();
+                    return getUUIDFromAPI(playerName);
+                }
+                //204 - no content for not found
+            } catch (Exception ex) {
+                logger.log(Level.SEVERE, "Failed to check if player has a paid account", ex);
+            }
+            //this connection doesn't need to be closed. So can make use of keep alive in java
+        }
+
+        return null;
+    }
+
+    public UUID getUUIDFromAPI(String playerName) {
+        try {
+            HttpURLConnection httpConnection = (HttpURLConnection) new URL(MCAPI_UUID_URL + playerName).openConnection();
+            httpConnection.addRequestProperty("Content-Type", "application/json");
+            httpConnection.setRequestProperty("User-Agent", USER_AGENT);
+
+            if (httpConnection.getResponseCode() == HttpURLConnection.HTTP_NOT_FOUND) {
+                //cracked
+                return null;
+            }
+
+            BufferedReader reader = new BufferedReader(new InputStreamReader(httpConnection.getInputStream()));
+            StringBuilder inputBuilder = new StringBuilder();
+            String line;
+            while ((line = reader.readLine()) != null) {
+                inputBuilder.append(line);
+            }
+
+            String input = inputBuilder.toString();
+            return getUUIDFromJson(input);
+        } catch (IOException iOException) {
+            logger.log(Level.SEVERE, "Tried converting name->uuid from third-party api", iOException);
+        }
+
+        return null;
+    }
+
+    public abstract boolean hasJoinedServer(Object session, String serverId);
+
+    protected abstract UUID getUUIDFromJson(String json);
+
+    protected HttpsURLConnection getConnection(String url) throws IOException {
+        HttpsURLConnection connection = (HttpsURLConnection) new URL(url).openConnection();
+        connection.setConnectTimeout(TIMEOUT);
+        connection.setReadTimeout(2 * TIMEOUT);
+        //the new Mojang API just uses json as response
+        connection.setRequestProperty("Content-Type", "application/json");
+        connection.setRequestProperty("User-Agent", USER_AGENT);
+
+        if (sslFactory != null) {
+            connection.setSSLSocketFactory(sslFactory);
+        }
+
+        return connection;
+    }
+}

core/src/main/java/com/github/games647/fastlogin/core/PlayerProfile.java

@@ -1,4 +1,4 @@
-package com.github.games647.fastlogin.bungee;
+package com.github.games647.fastlogin.core;
 
 import java.util.UUID;
 
@@ -40,7 +40,7 @@ public class PlayerProfile {
         return userId;
     }
 
-    protected synchronized void setUserId(long generatedId) {
+    public synchronized void setUserId(long generatedId) {
         this.userId = generatedId;
     }
 

core/src/main/java/com/github/games647/fastlogin/core/importer/AutoInImporter.java

@@ -0,0 +1,51 @@
+package com.github.games647.fastlogin.core.importer;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+import javax.sql.DataSource;
+
+public class AutoInImporter extends Importer {
+
+    private static final String USER_TABLE = "nicknames";
+    private static final String UUID_TABLE = "uuids";
+    private static final String SESSION_TABLE = "sessions";
+
+    @Override
+    public int importData(DataSource source, DataSource target, String targetTable) throws SQLException {
+        Connection con = null;
+        Statement stmt = null;
+        try {
+            con = source.getConnection();
+            stmt = con.createStatement();
+            int importedRows = stmt.executeUpdate("INSERT INTO " + targetTable + " (Name, Premium, LastIp, UUID) SELECT"
+                    + " name AS Name,"
+                    /* Enable premium authentication only for those who want to be auto logged in, so
+                    they have their cracked protection disabled */
+                    + " !protection AND premium AS Premium,"
+                    + " '' AS LastIp,"
+                    /* Remove the dashes - returns null if puuid is null too */
+                    + " REPLACE(puuid, '-', '') AS UUID"
+                    + " FROM " + USER_TABLE
+                    /* Get the premium uuid */
+                    + " LEFT JOIN " + " ("
+                    /* Prevent duplicates */
+                    + "SELECT * FROM " + UUID_TABLE + " GROUP BY nickname_id"
+                    + ") uuids"
+                    + " ON " + USER_TABLE + ".id = uuids.nickname_id");
+
+            /* FastLogin will also make lookups on the uuid column for name changes
+            the old 1.6.2 version won't check if those user have premium enabled
+
+            so it could happen that a premium could steal the account if we don't do this
+
+            It seems the uuid is saved on autoin too if the player is cracked */
+            stmt.executeUpdate("UPDATE `premium` SET `UUID`=NULL WHERE PREMIUM=0");
+            return importedRows;
+        } finally {
+            closeQuietly(stmt);
+            closeQuietly(con);
+        }
+    }
+}

core/src/main/java/com/github/games647/fastlogin/core/importer/BPAImporter.java

@@ -0,0 +1,33 @@
+package com.github.games647.fastlogin.core.importer;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+import javax.sql.DataSource;
+
+public class BPAImporter extends Importer {
+
+    private static final String DEFAULT_TABLE_NAME = "users";
+
+    @Override
+    public int importData(DataSource source, DataSource target, String targetTable) throws SQLException {
+        Connection con = null;
+        Statement stmt = null;
+        try {
+            con = source.getConnection();
+            stmt = con.createStatement();
+            int importedRows = stmt.executeUpdate("INSERT INTO " + targetTable + " SELECT"
+                    + " nick AS Name,"
+                    + " NULL AS UUID,"
+                    + " checked AS Premium,"
+                    + " lastIP AS LastIp,"
+                    + " FROM_UNIXTIME(lastJoined * 0.001) AS LastLogin"
+                    + " FROM " + DEFAULT_TABLE_NAME);
+            return importedRows;
+        } finally {
+            closeQuietly(stmt);
+            closeQuietly(con);
+        }
+    }
+}

core/src/main/java/com/github/games647/fastlogin/core/importer/ElDziAuthImporter.java

@@ -0,0 +1,33 @@
+package com.github.games647.fastlogin.core.importer;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+import javax.sql.DataSource;
+
+public class ElDziAuthImporter extends Importer {
+
+    private static final String TABLE_NAME = "accounts";
+
+    @Override
+    public int importData(DataSource source, DataSource target, String targetTable) throws SQLException {
+        Connection con = null;
+        Statement stmt = null;
+        try {
+            con = source.getConnection();
+            stmt = con.createStatement();
+            int importedRows = stmt.executeUpdate("INSERT INTO " + targetTable + " SELECT"
+                    + " nick AS Name,"
+                    + " uuid AS UUID,"
+                    + " premium AS Premium,"
+                    + " lastIp AS LastIp,"
+                    + " FROM_UNIXTIME(lastPlayed * 0.001) AS LastLogin"
+                    + " FROM " + TABLE_NAME);
+            return importedRows;
+        } finally {
+            closeQuietly(stmt);
+            closeQuietly(con);
+        }
+    }
+}

core/src/main/java/com/github/games647/fastlogin/core/importer/Importer.java

@@ -0,0 +1,20 @@
+package com.github.games647.fastlogin.core.importer;
+
+import java.sql.SQLException;
+
+import javax.sql.DataSource;
+
+public abstract class Importer {
+
+    public abstract int importData(DataSource source, DataSource target, String targetTable) throws SQLException;
+
+    protected void closeQuietly(AutoCloseable closeable) {
+        if (closeable != null) {
+            try {
+                closeable.close();
+            } catch (Exception ignore) {
+                //ignore
+            }
+        }
+    }
+}

core/src/main/resources/config.yml

@@ -0,0 +1,146 @@
+# FastLogin config
+# Project site: https://www.spigotmc.org/resources/fastlogin.14153
+# Source code: https://github.com/games647/FastLogin
+#
+# You can access the newest config here:
+# https://github.com/games647/FastLogin/blob/master/core/src/main/resources/config.yml
+
+# Request a premium login without forcing the player to type a command
+#
+# If you activate autoRegister, this plugin will check/do these points on login:
+# 1. An existing cracked account shouldn't exist
+# -> paid accounts cannot steal the existing account of cracked players
+# - (Already registered players could still use the /premium command to activate premium checks)
+# 2. Automatically registers an account with a strong random generated password
+# -> cracked player cannot register an account for the premium player and so cannot the steal the account
+#
+# Furthermore the premium player check have to be made based on the player name
+# This means if a cracked player connects to the server and we request a paid account login from this player
+# the player just disconnect and sees the message: 'bad login' or 'invalid session'
+# There is no way to change this message
+# For more information: https://github.com/games647/FastLogin#why-do-players-have-to-invoke-a-command
+autoRegister: false
+
+# If this plugin detected that a player has a premium, it can also set the associated
+# uuid from that account. So if the players changes their usernames, they will still have
+# the same playerdata (inventory, permissions, ...)
+#
+# Warning: This also means that the UUID will be different if the player is connecting
+# through a offline mode connection. This **could** cause plugin compatibility issues.
+#
+# This is a example and doesn't apply for every plugin.
+# Example: If you want to ban players who aren't online at the moment, the ban plugin will look
+# after a offline uuid associated to the player, because the server is in offline mode. Then the premium
+# players could still join the server, because they have different UUID.
+#
+# Moreover you may want to convert the offline UUID to a premium UUID. This will ensure that the player
+# will have the same inventory, permissions, ... if they switched to premium authentification from offline/cracked
+# authentification.
+#
+# This feature requires Cauldron, Spigot or a fork of Spigot (PaperSpigot, TacoSpigot)
+premiumUuid: false
+
+# This will make an additional check (only for player names which are not in the database) against the mojang servers
+# in order to get the premium UUID. If that premium UUID is in the database, we can assume on sucessful login that the
+# player changed it's  username and we just update the name in the database.
+# Examples:
+# #### Case 1
+# nameChangeCheck = false ----- autoRegister = false
+#
+# Player logins as cracked until the player invoked the command /premium. Then we could override the existing database
+# record.
+#
+# #### Case 2
+#
+# nameChangeCheck = true ----- autoRegister = false
+#
+# Connect the Mojang API and check what UUID the player has (UUID exists => Paid Minecraft account). If that UUID is in
+# the database it's an **existing player** and FastLogin can **assume** the player is premium and changed the username.
+# If it's not in the database, it's a new player and **could be a cracked player**. So we just use a offline mode
+# authentication for this player.
+#
+# **Limitation**: Cracked players who uses the new username of a paid account cannot join the server if the database
+# contains the old name. (Example: The owner of the paid account no longer plays on the server, but changed the username
+# in the meanwhile).
+#
+# #### Case 3
+#
+# nameChangeCheck = false ----- autoRegister = true
+#
+# We will always request a premium authentication if the username is unknown to us, but is in use by a paid minecraft
+# account. This means it's kind of a more aggressive check like nameChangeCheck = true and autoRegister = false, because
+# it request a premium authentication which are completely new to us, that even the premium UUID is not in our database.
+#
+# **Limitation**: see below
+#
+# #### Case 4
+#
+# nameChangeCheck = true ----- autoRegister = true
+#
+# Based on autoRegister it checks if the player name is premium and login using a premium authentication. After that
+# fastlogin receives the premium UUID and can update the database record.
+#
+# **Limitation from autoRegister**: New offline players who uses the username of an existing minecraft cannot join the
+# server.
+nameChangeCheck: false
+
+# If your players have a premium account and a skin associated to their account, this plugin
+# can download the data and set it to the online player.
+#
+# Keep in mind that this will only works if the player:
+# * is the owner of the premium account
+# * the serverconnection is established through a premium connection (paid account authentification)
+# * has a skin
+#
+# This means this plugin doesn't need to create a new connection to the Mojang servers, because
+# the skin data is included in the Auth-Verification-Response sent by Mojang. If you want to use for other
+# players like cracked player, you have to use other plugins.
+#
+# If you want to use skins for your cracked player, you need an additional plugin like
+# ChangeSkin, SkinRestoer, ...
+forwardSkin: true
+
+# Displays a warning message that this message SHOULD only be invoked by
+# users who actually are the owner of this account. So not by cracked players
+#
+# If they still want to invoke the command, they have to invoke /premium again
+premium-warning: true
+
+# If you have autoRegister or nameChangeCheck enabled, you could be rate-limited by Mojang.
+# The requests of the both options will be only made by FastLogin if the username is unknown to the server
+# You are allowed to make 600 requests per 10-minutes (60 per minute)
+# If you own a big server this value could be too low
+# Once the limit is reached, new players are always logged in as cracked until the rate-limit is expired.
+# (to the next ten minutes)
+#
+# The limit is IP-wide. If you have multiple IPv4-Addreses you specify them here. FastLogin will then use it in rotating
+# order --> 5 different IP-addreses 5 * 600 per 10 minutes
+# If this list is empty only the default one will be used
+#
+# Lists are created like this:
+#ip-addresses:
+#    - 192-168-0-2
+ip-addresses: []
+
+# How many requests should be established until the plugin uses the third-party API https://mcapi.ca/
+# Once this number is reached in a range of ten minutes it will start connecting to https://mcapi.ca/ for the next ten minutes
+# This option exists in order to workaround the rate-limiting. Name -> UUID are fetched in the same way like heads
+#
+# If you want to join the discussion visit this: https://github.com/games647/FastLogin/issues/27#issuecomment-226954350
+mojang-request-limit: 600
+
+# Database configuration
+# Recommened is the use of MariaDB (a better version of MySQL)
+
+# Single file SQLite database
+driver: org.sqlite.JDBC
+# File location
+database: '{pluginDir}/FastLogin.db'
+
+# MySQL
+#driver: com.mysql.jdbc.Driver
+#host: localhost
+#port: 3306
+#database: fastlogin
+#username: myUser
+#password: myPassword

core/src/main/resources/messages.yml

@@ -0,0 +1,92 @@
+# FastLogin localization
+# Project site: https://www.spigotmc.org/resources/fastlogin.14153
+# Source code: https://github.com/games647/FastLogin
+#
+# You can access the newest locale here:
+# https://github.com/games647/FastLogin/blob/master/core/src/main/resources/messages.yml
+#
+# You want to have language template? Visit the Github Wiki here:
+# https://github.com/games647/FastLogin/wiki/English
+
+# In order to split a message into seperate lines you could just make a new line, but keep the '
+# Example:
+# bla: '&aFirst line
+# Second line
+# Third line'
+
+# If you want to disable a message, you can just set it to a empty value.
+# In this case no message will be sent
+# Example:
+# bla: ''
+
+# ========= Shared (BungeeCord and Bukkit)   ============
+
+# Player activated premium logins in order to skip offline authentication
+add-premium: '&2Added to the list of premium players'
+
+# Player is already set be a paid account
+already-exists: '&4You are already on the premium list'
+
+# Player is already set be a paid account
+already-exists-other: '&4Player is already on the premium list'
+
+# Player was changed to be cracked
+remove-premium: '&2Removed from the list of premium players'
+
+# Player is already set to be cracked
+not-premium: '&4You are not in the premium list'
+
+# Player is already set to be cracked
+not-premium-other: '&4Player is not in the premium list'
+
+# Admin wanted to change the premium of a user that isn't known to the plugin
+player-unknown: '&4Player not in the database'
+
+# ========= Bukkit/Spigot/PaperSpigot/TacoSpigot only ================================
+
+# The user skipped the authentication, because it was a premium player
+auto-login: '&2Auto logged in'
+
+# The user was auto registered on the first join. The user account will be registered to protect it from cracked players
+# The password can be used if the mojang servers are down and you still want your premium users to login (PLANNED)
+auto-register: '&2Auto registered with password: %password
+You may want change it?'
+
+# Player is not able to toggle the premium state of other players
+no-permission: '&4Not enough permissions'
+
+# Although the console can toggle the premium state, it's not possible for the console itself.
+# Because the console is not a user. (obviously, isn't it?)
+no-console: '&4You are not a player. You cannot toggle the premium state for YOURSELF as a console'
+
+# The user wants to toggle premium state, but BungeeCord support is enabled. This means the server have to communicate
+# with the BungeeCord first which will establish a connection with the database server.
+wait-on-proxy: '&6Sending request...'
+
+# When ProtocolLib is enabled and the plugin is unable to continue handling a login request after a requested premium
+# authentication. In this state the client expects a success packet with a encrypted connection or disconnect packet.
+# So we kick the player, if we cannot encrypt the connection. In other situation (example: premium name check),
+# the player will be just authenticated as cracked
+error-kick: '&4Error occured'
+
+# The server sents a verify token within the premium authentication reqest. If this doesn't match on response,
+# it could be another client sending malicious packets
+invalid-verify-token: '&4Invalid token'
+
+# The client sent no request join server request to the mojang servers which would proof that it's owner of that
+# acciunt. Only modified clients would do this.
+invalid-session: '&4Invalid session'
+
+# The client sent a malicous packet without a login request packet
+invalid-requst: '&4Invalid request'
+
+# Message if the bukkit isn't fully started to inject the packets
+not-started: '&cServer is not fully started yet. Please retry'
+
+# Warning message if a user invoked /premium command
+premium-warning: '&c&lWARNING: &6This command should &lonly&6 be invoked if you are the owner of this paid minecraft account
+Type &a/premium&6 again to confirm'
+
+# ========= Bungee/Waterfall only ================================
+
+

pom.xml

@@ -8,7 +8,7 @@
     <packaging>pom</packaging>
 
     <name>FastLogin</name>
-    <version>1.3</version>
+    <version>1.7.1</version>
     <inceptionYear>2015</inceptionYear>
     <url>https://www.spigotmc.org/resources/fastlogin.14153/</url>
     <description>
@@ -22,6 +22,7 @@
     </properties>
 
     <modules>
+        <module>core</module>
         <module>bukkit</module>
         <module>bungee</module>
         <module>universal</module>
@@ -59,7 +60,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
-                <version>2.6</version>
+                <version>3.0.0</version>
                 <configuration>
                     <outputDirectory>${outputDir}</outputDirectory>
                 </configuration>
@@ -83,20 +84,4 @@
             </resource>
         </resources>
     </build>
-
-    <dependencies>
-        <!--Database pooling-->
-        <dependency>
-            <groupId>com.zaxxer</groupId>
-            <artifactId>HikariCP</artifactId>
-            <version>2.4.6</version>
-        </dependency>
-
-        <!--Logging framework implements slf4j which is required by hikari-->
-        <dependency>
-            <groupId>org.slf4j</groupId>
-            <artifactId>slf4j-jdk14</artifactId>
-            <version>1.7.21</version>
-        </dependency>
-    </dependencies>
 </project>

universal/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <groupId>com.github.games647</groupId>
         <artifactId>fastlogin</artifactId>
-        <version>1.3</version>
+        <version>1.7.1</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
@@ -47,6 +47,12 @@
     </build>
 
     <dependencies>
+        <dependency>
+            <groupId>${project.groupId}</groupId>
+            <artifactId>fastlogin.core</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+
         <dependency>
             <groupId>${project.groupId}</groupId>
             <artifactId>fastlogin.bukkit</artifactId>