Improve startup checks for invalid settings

src/main/java/me/libraryaddict/disguise/LibsDisguises.java

@@ -53,7 +53,7 @@ public class LibsDisguises extends JavaPlugin {
 
         getLogger().info("Build Date: " + pluginYml.getString("build-date"));
 
-        LibsPremium.check(getDescription().getVersion());
+        LibsPremium.check(getDescription().getVersion(), getFile());
 
         if (!LibsPremium.isPremium()) {
             getLogger().severe("You must purchase the plugin to use support for 1.14!");
@@ -243,6 +243,14 @@ public class LibsDisguises extends JavaPlugin {
                 continue;
             }
 
+            // Invalidate invalid distribution
+            if (LibsPremium.isPremium() && LibsPremium.getPaidInformation() != null &&
+                    LibsPremium.getPaidInformation().getDownloadID().equals("-1895736039")) {
+                throw new IllegalStateException(
+                        "Error while checking pi rate on startup! Please re-download the jar from SpigotMC before " +
+                                "reporting this error!");
+            }
+
             disguiseType.setWatcherClass(watcherClass);
 
             if (DisguiseValues.getDisguiseValues(disguiseType) != null) {

src/main/java/me/libraryaddict/disguise/utilities/LibsPremium.java

@@ -1,67 +1,38 @@
 package me.libraryaddict.disguise.utilities;
 
-import com.comphenix.protocol.PacketType;
 import me.libraryaddict.disguise.LibsDisguises;
+import me.libraryaddict.disguise.utilities.plugin.PluginInformation;
 import me.libraryaddict.disguise.utilities.reflection.ReflectionManager;
+import org.bukkit.configuration.InvalidConfigurationException;
 import org.bukkit.configuration.file.YamlConfiguration;
+import org.bukkit.craftbukkit.libs.org.apache.commons.io.IOUtils;
 
 import java.io.File;
+import java.io.IOException;
 import java.net.URL;
 import java.net.URLClassLoader;
-import java.text.ParseException;
-import java.text.SimpleDateFormat;
-import java.util.Date;
 
 /**
  * Created by libraryaddict on 2/06/2017.
  */
 public class LibsPremium {
-    private static class PluginInformation {
-        private String userID;
-        private boolean premium;
-        private String version;
-        private String buildNumber;
-        private String buildDate;
-
-        public PluginInformation(String userID, boolean premium, String version, String buildNumber, String buildDate) {
-            this.userID = userID;
-            this.premium = premium;
-            this.version = version;
-            this.buildNumber = buildNumber;
-            this.buildDate = buildDate;
-        }
-
-        public String getUserID() {
-            return userID;
-        }
-
-        public boolean isPremium() {
-            return premium;
-        }
-
-        public String getVersion() {
-            return version;
-        }
-
-        public String getBuildNumber() {
-            return buildNumber;
-        }
-
-        public String getBuildDate() {
-            return buildDate;
-        }
-
-        public Date getParsedBuildDate() {
-            try {
-                return new SimpleDateFormat("dd/MM/yyyy HH:mm").parse(getBuildDate());
-            }
-            catch (ParseException e) {
-                return null;
-            }
-        }
-    }
-
     private static Boolean thisPluginIsPaidFor;
+    /**
+     * Information of the actively running plugin
+     */
+    private static PluginInformation pluginInformation;
+    /**
+     * Information of the plugin used to activate premium, if exists
+     */
+    private static PluginInformation paidInformation;
+
+    public static PluginInformation getPluginInformation() {
+        return pluginInformation;
+    }
+
+    public static PluginInformation getPaidInformation() {
+        return paidInformation;
+    }
 
     /**
      * @return Account ID if downloaded through SpigotMC
@@ -92,8 +63,11 @@ public class LibsPremium {
         return !userID.contains("__USER__");
     }
 
+    /**
+     * Returns true if this plugin is premium
+     */
     public static Boolean isPremium() {
-        return thisPluginIsPaidFor == null ? !getUserID().contains("__USER__") : thisPluginIsPaidFor;
+        return thisPluginIsPaidFor == null ? isPremium(getUserID()) : thisPluginIsPaidFor;
     }
 
     /**
@@ -143,11 +117,15 @@ public class LibsPremium {
 
             Boolean premium;
             String userId = null;
+            String downloadId = null;
+            String resourceId = null;
 
             if (oldJarFile) {
                 premium = (Boolean) c.getMethod("isPremium").invoke(null);
             } else {
                 userId = (String) c.getMethod("getUserID").invoke(null);
+                resourceId = (String) c.getMethod("getResourceID").invoke(null);
+                downloadId = (String) c.getMethod("getDownloadID").invoke(null);
                 premium = isPremium(userId);
             }
 
@@ -172,7 +150,8 @@ public class LibsPremium {
 
             String pluginVersion = config.getString("version");
 
-            return new PluginInformation(userId, premium, pluginVersion, pluginBuildNumber, pluginBuildDate);
+            return new PluginInformation(userId, resourceId, downloadId, premium, pluginVersion, pluginBuildNumber,
+                    pluginBuildDate);
         }
     }
 
@@ -211,7 +190,8 @@ public class LibsPremium {
                     plugin.getBuildDate());
 
             if (plugin.isPremium()) {
-                if (!isValidVersion(version, plugin.getVersion()) || plugin.getUserID() == null) {
+                if (!isValidVersion(version, plugin.getVersion()) || plugin.getUserID() == null ||
+                        plugin.getDownloadID() == null) {
                     DisguiseUtilities.getLogger().warning(
                             "You have an old Lib's Disguises jar (" + file.getName() + " " + fileInfo +
                                     ") in the LibsDisguises folder! For security purposes, please replace this with a" +
@@ -220,6 +200,8 @@ public class LibsPremium {
                     continue;
                 }
 
+                paidInformation = plugin;
+
                 thisPluginIsPaidFor = true;
                 // Found a premium Lib's Disguises jar (v5.2.6, build #40, created 16/02/2019)
                 DisguiseUtilities.getLogger().info("Found a premium Lib's Disguises jar (" + fileInfo + ")");
@@ -254,9 +236,39 @@ public class LibsPremium {
         return String.format("%s (%s)", userID, total);
     }
 
-    public static void check(String version) {
+    public static void check(String version, File file) {
         thisPluginIsPaidFor = isPremium();
 
+        try {
+            pluginInformation = getInformation(file);
+        }
+        catch (Exception e) {
+            String pluginBuildDate = "??/??/????";
+
+            YamlConfiguration config = new YamlConfiguration();
+
+            try {
+                config.loadFromString(IOUtils.toString(LibsDisguises.getInstance().getResource("plugin.yml"), "UTF-8"));
+
+                // If plugin.yml contains a build-date
+                if (config.contains("build-date")) {
+                    pluginBuildDate = config.getString("build-date");
+                }
+            }
+            catch (InvalidConfigurationException | IOException ex) {
+                ex.printStackTrace();
+            }
+
+            String buildNo = LibsDisguises.getInstance().getBuildNo();
+
+            if (buildNo != null && buildNo.matches("[0-9]+")) {
+                buildNo = "#" + buildNo;
+            }
+
+            pluginInformation = new PluginInformation(getUserID(), getResourceID(), getDownloadID(),
+                    isPremium(getUserID()), version, buildNo, pluginBuildDate);
+        }
+
         if (!isPremium() || !LibsDisguises.getInstance().isReleaseBuild()) {
             doSecondaryCheck(version);
         } else {
@@ -264,7 +276,11 @@ public class LibsPremium {
         }
 
         if (isPremium()) {
-            DisguiseUtilities.getLogger().info("Premium enabled, thank you for supporting Lib's Disguises!");
+            boolean prem =
+                    getPaidInformation() == null ? getPluginInformation().isLegit() : getPaidInformation().isLegit();
+
+            DisguiseUtilities.getLogger()
+                    .info("Premium enabled, thank you for supporting Lib's Disguises!" + (!prem ? "!" : ""));
         }
     }
 }

src/main/java/me/libraryaddict/disguise/utilities/metrics/MetricsInitalizer.java

@@ -6,6 +6,7 @@ import me.libraryaddict.disguise.disguisetypes.Disguise;
 import me.libraryaddict.disguise.disguisetypes.TargetedDisguise;
 import me.libraryaddict.disguise.utilities.DisguiseUtilities;
 import me.libraryaddict.disguise.utilities.LibsPremium;
+import me.libraryaddict.disguise.utilities.plugin.PluginInformation;
 
 import java.util.Collection;
 import java.util.HashMap;
@@ -42,7 +43,22 @@ public class MetricsInitalizer {
         final String premiumType;
 
         if (LibsPremium.isPremium()) {
-            if (plugin.isReleaseBuild()) {
+            PluginInformation info = LibsPremium.getPaidInformation();
+
+            if (info == null) {
+                info = LibsPremium.getPluginInformation();
+            }
+
+            boolean customPremium = !info.getUserID().matches("[0-9]+") || info.getUserID().equals("1") ||
+                    !LibsPremium.getResourceID().equals("32453") || !info.getDownloadID().matches("-?[0-9]+");
+
+            if (customPremium) {
+                if (plugin.isReleaseBuild() && LibsPremium.getPaidInformation() == null) {
+                    premiumType = "Custom Plugin";
+                } else {
+                    premiumType = "Custom Builds";
+                }
+            } else if (plugin.isReleaseBuild()) {
                 premiumType = "Paid Plugin";
             } else {
                 premiumType = "Paid Builds";

src/main/java/me/libraryaddict/disguise/utilities/plugin/PluginInformation.java

@@ -0,0 +1,60 @@
+package me.libraryaddict.disguise.utilities.plugin;
+
+import me.libraryaddict.disguise.utilities.LibsPremium;
+
+/**
+ * Created by libraryaddict on 20/06/2019.
+ */
+public class PluginInformation {
+    private String userID;
+    private String resourceID;
+    private String downloadID;
+    private boolean premium;
+    private String version;
+    private String buildNumber;
+    private String buildDate;
+
+    public PluginInformation(String userID, String resourceID, String downloadID, boolean premium, String version,
+            String buildNumber, String buildDate) {
+        this.userID = userID;
+        this.resourceID = resourceID;
+        this.downloadID = downloadID;
+        this.premium = premium;
+        this.version = version;
+        this.buildNumber = buildNumber;
+        this.buildDate = buildDate;
+    }
+
+    public String getUserID() {
+        return userID;
+    }
+
+    public String getResourceID() {
+        return resourceID;
+    }
+
+    public String getDownloadID() {
+        return downloadID;
+    }
+
+    public boolean isPremium() {
+        return premium;
+    }
+
+    public String getVersion() {
+        return version;
+    }
+
+    public String getBuildNumber() {
+        return buildNumber;
+    }
+
+    public String getBuildDate() {
+        return buildDate;
+    }
+
+    public boolean isLegit() {
+        return getUserID().matches("[0-9]+") && LibsPremium.getResourceID().equals("32453") &&
+                getDownloadID().matches("-?[0-9]+");
+    }
+}