implement checking permissions of an offline player

src/main/java/fr/xephi/authme/permission/DefaultPermission.java

@@ -1,5 +1,6 @@
 package fr.xephi.authme.permission;
 
+import org.bukkit.Bukkit;
 import org.bukkit.command.CommandSender;
 
 /**
@@ -13,6 +14,11 @@ public enum DefaultPermission {
         public boolean evaluate(CommandSender sender) {
             return false;
         }
+
+        @Override
+        public boolean evaluateOffline(String name) {
+            return false;
+        }
     },
 
     /** Only players with OP status have permission. */
@@ -21,6 +27,12 @@ public enum DefaultPermission {
         public boolean evaluate(CommandSender sender) {
             return sender.isOp();
         }
+
+        @Override
+        public boolean evaluateOffline(String name) {
+            // TODO Gnat008 20160617: Is this safe?
+            return Bukkit.getOfflinePlayer(name).isOp();
+        }
     },
 
     /** Everyone is granted permission. */
@@ -29,6 +41,11 @@ public enum DefaultPermission {
         public boolean evaluate(CommandSender sender) {
             return true;
         }
+
+        @Override
+        public boolean evaluateOffline(String name) {
+            return true;
+        }
     };
 
     /** Textual representation of the default permission. */
@@ -50,6 +67,14 @@ public enum DefaultPermission {
      */
     public abstract boolean evaluate(CommandSender sender);
 
+    /**
+     * Evaluate whether permission is granted to an offline user.
+     *
+     * @param name The name to check
+     * @return True if the user has permission, false otherwise
+     */
+    public abstract boolean evaluateOffline(String name);
+
     /**
      * Return the textual representation.
      *

src/main/java/fr/xephi/authme/permission/PermissionsManager.java

@@ -258,14 +258,14 @@ public class PermissionsManager {
      *
      * @return
      */
-    public boolean hasPermission(String name, PermissionNode permissionNode) {
+    public boolean hasPermissionOffline(String name, PermissionNode permissionNode) {
         // Check if the permission node is null
         if (permissionNode == null) {
             return true;
         }
 
         if (!isEnabled()) {
-            return false;
+            return permissionNode.getDefaultPermission().evaluateOffline(name);
         }
 
         return handler.hasPermission(name, permissionNode);

src/main/java/fr/xephi/authme/task/PurgeService.java

@@ -145,7 +145,7 @@ public class PurgeService implements Reloadable {
         Set<String> toPurge = new HashSet<>();
 
         for (String name : initial) {
-            if (!permissionsManager.hasPermission(name, PlayerStatePermission.BYPASS_PURGE)) {
+            if (!permissionsManager.hasPermissionOffline(name, PlayerStatePermission.BYPASS_PURGE)) {
                 toPurge.add(name);
             }
         }