Moved WEPIF to the com.sk89q.wepif package and made PermissionsResolverManager a singleton

Added OfflinePlayer permissions fetching methods to WEPIF

src/main/java/com/sk89q/wepif/DinnerPermsResolver.java

@@ -0,0 +1,152 @@
+// $Id$
+/*
+ * WorldEdit
+ * Copyright (C) 2010 sk89q <http://www.sk89q.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.wepif;
+
+import com.sk89q.util.yaml.YAMLProcessor;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.Server;
+import org.bukkit.entity.Player;
+import org.bukkit.permissions.Permissible;
+import org.bukkit.permissions.Permission;
+import org.bukkit.permissions.PermissionAttachmentInfo;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class DinnerPermsResolver implements PermissionsResolver {
+
+    private static final String GROUP_PREFIX = "group.";
+    private final Server server;
+
+    public DinnerPermsResolver(Server server) {
+        this.server = server;
+    }
+
+    public static PermissionsResolver factory(Server server, YAMLProcessor config) {
+        return new DinnerPermsResolver(server);
+    }
+
+    public void load() {
+    }
+
+    public boolean hasPermission(String name, String permission) {
+        return hasPermission(server.getOfflinePlayer(name), permission);
+    }
+
+    public boolean hasPermission(String worldName, String name, String permission) {
+        return hasPermission(worldName, server.getOfflinePlayer(name), permission);
+    }
+
+    public boolean inGroup(String name, String group) {
+        return inGroup(server.getOfflinePlayer(name), group);
+    }
+
+    public String[] getGroups(String name) {
+        return getGroups(server.getOfflinePlayer(name));
+    }
+
+    public boolean hasPermission(OfflinePlayer player, String permission) {
+        Permissible perms = getPermissible(player);
+        if (perms == null) {
+            return false; // Permissions are only registered for objects with a Permissible
+        }
+        switch (internalHasPermission(perms, permission)) {
+            case -1:
+                return false;
+            case 1:
+                return true;
+        }
+        int dotPos = permission.lastIndexOf(".");
+        while (dotPos > -1) {
+            switch (internalHasPermission(perms, permission.substring(0, dotPos + 1) + "*")) {
+                case -1:
+                    return false;
+                case 1:
+                    return true;
+            }
+            dotPos = permission.lastIndexOf(".", dotPos - 1);
+        }
+        return internalHasPermission(perms, "*") == 1;
+    }
+
+    public boolean hasPermission(String worldName, OfflinePlayer player, String permission) {
+        return hasPermission(player, permission); // no per-world ability to check permissions in dinnerperms
+    }
+
+    public boolean inGroup(OfflinePlayer player, String group) {
+        Permissible perms = getPermissible(player);
+        if (perms == null) {
+            return false;
+        }
+        return perms.hasPermission(GROUP_PREFIX + group);
+    }
+
+    public String[] getGroups(OfflinePlayer player) {
+        Permissible perms = getPermissible(player);
+        if (perms == null) {
+            return new String[0];
+        }
+        List<String> groupNames = new ArrayList<String>();
+        for (PermissionAttachmentInfo permAttach : perms.getEffectivePermissions()) {
+            String perm = permAttach.getPermission();
+            if (!(perm.startsWith(GROUP_PREFIX) && permAttach.getValue())) {
+                continue;
+            }
+            groupNames.add(perm.substring(GROUP_PREFIX.length(), perm.length()));
+        }
+        return groupNames.toArray(new String[groupNames.size()]);
+    }
+    
+    public Permissible getPermissible(OfflinePlayer offline) {
+        if (offline == null) return null;
+        Permissible perm = null;
+        if (offline instanceof Permissible) {
+            perm = (Permissible) offline;
+        } else {
+            Player player = offline.getPlayer();
+            if (player != null) perm = player;
+        }
+        return perm;
+    }
+
+    /**
+     * Checks the permission from dinnerperms
+     * @param perms Permissible to check for
+     * @param permission The permission to check
+     * @return -1 if the permission is explicitly denied, 1 if the permission is allowed,
+     *         0 if the permission is denied by a default.
+     */
+    public int internalHasPermission(Permissible perms, String permission) {
+        if (perms.isPermissionSet(permission)) {
+            return perms.hasPermission(permission) ? 1 : -1;
+        } else {
+            Permission perm = server.getPluginManager().getPermission(permission);
+            if (perm != null) {
+                return perm.getDefault().getValue(perms.isOp()) ? 1 : 0;
+            } else {
+                return 0;
+            }
+        }
+    }
+
+    public String getDetectionMessage() {
+        return "Using the Bukkit Permissions API.";
+    }
+}