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/ConfigurationPermissionsResolver.java

@@ -0,0 +1,166 @@
+// $Id$
+/*
+ * 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 java.util.*;
+
+import com.sk89q.util.yaml.YAMLNode;
+import com.sk89q.util.yaml.YAMLProcessor;
+import org.bukkit.OfflinePlayer;
+
+public class ConfigurationPermissionsResolver implements PermissionsResolver {
+    private YAMLProcessor config;
+    private Map<String, Set<String>> userPermissionsCache;
+    private Set<String> defaultPermissionsCache;
+    private Map<String, Set<String>> userGroups;
+
+    public ConfigurationPermissionsResolver(YAMLProcessor config) {
+        this.config = config;
+    }
+
+    public static YAMLNode generateDefaultPerms(YAMLNode section) {
+        section.setProperty("groups.default.permissions", new String[] {
+                "worldedit.reload",
+                "worldedit.selection",
+                "worlds.creative.worldedit.region"});
+        section.setProperty("groups.admins.permissions", new String[] { "*" });
+        section.setProperty("users.sk89q.permissions", new String[] { "worldedit" });
+        section.setProperty("users.sk89q.groups", new String[] { "admins" });
+        return section;
+    }
+
+    public void load() {
+        userGroups = new HashMap<String, Set<String>>();
+        userPermissionsCache = new HashMap<String, Set<String>>();
+        defaultPermissionsCache = new HashSet<String>();
+
+        Map<String, Set<String>> userGroupPermissions = new HashMap<String, Set<String>>();
+
+        List<String> groupKeys = config.getStringList("permissions.groups", null);
+
+        if (groupKeys != null) {
+            for (String key : groupKeys) {
+                List<String> permissions =
+                        config.getStringList("permissions.groups." + key + ".permissions", null);
+
+                if (permissions.size() > 0) {
+                    Set<String> groupPerms = new HashSet<String>(permissions);
+                    userGroupPermissions.put(key, groupPerms);
+
+                    if (key.equals("default")) {
+                        defaultPermissionsCache.addAll(permissions);
+                    }
+                }
+            }
+        }
+
+        List<String> userKeys = config.getStringList("permissions.users", null);
+
+        if (userKeys != null) {
+            for (String key : userKeys) {
+                Set<String> permsCache = new HashSet<String>();
+
+                List<String> permissions =
+                        config.getStringList("permissions.users." + key + ".permissions", null);
+
+                if (permissions.size() > 0) {
+                    permsCache.addAll(permissions);
+                }
+
+                List<String> groups =
+                        config.getStringList("permissions.users." + key + ".groups", null);
+                groups.add("default");
+
+                if (groups.size() > 0) {
+                    for (String group : groups) {
+                        Set<String> groupPerms = userGroupPermissions.get(group);
+                        if (groupPerms != null) {
+                            permsCache.addAll(groupPerms);
+                        }
+                    }
+                }
+
+                userPermissionsCache.put(key.toLowerCase(), permsCache);
+                userGroups.put(key.toLowerCase(), new HashSet<String>(groups));
+            }
+        }
+    }
+
+    public boolean hasPermission(String player, String permission) {
+        int dotPos = permission.lastIndexOf(".");
+        if (dotPos > -1) {
+            if (hasPermission(player, permission.substring(0, dotPos))) {
+                return true;
+            }
+        }
+
+        Set<String> perms = userPermissionsCache.get(player.toLowerCase());
+        if (perms == null) {
+            return defaultPermissionsCache.contains(permission)
+                    || defaultPermissionsCache.contains("*");
+        }
+
+        return perms.contains("*") || perms.contains(permission);
+    }
+
+    public boolean hasPermission(String worldName, String player, String permission) {
+        return hasPermission(player, "worlds." + worldName + "." + permission)
+                || hasPermission(player, permission);
+    }
+
+    public boolean inGroup(String player, String group) {
+        Set<String> groups = userGroups.get(player.toLowerCase());
+        if (groups == null) {
+            return false;
+        }
+
+        return groups.contains(group);
+    }
+
+    public String[] getGroups(String player) {
+        Set<String> groups = userGroups.get(player.toLowerCase());
+        if (groups == null) {
+            return new String[0];
+        }
+
+        return groups.toArray(new String[groups.size()]);
+    }
+
+    public boolean hasPermission(OfflinePlayer player, String permission) {
+        return hasPermission(player.getName(), permission);
+    }
+
+    public boolean hasPermission(String worldName, OfflinePlayer player, String permission) {
+        return hasPermission(worldName, player.getName(), permission);
+    }
+
+    public boolean inGroup(OfflinePlayer player, String group) {
+        return inGroup(player.getName(), group);
+    }
+
+    public String[] getGroups(OfflinePlayer player) {
+        return getGroups(player.getName());
+    }
+
+    public String getDetectionMessage() {
+        return "No known permissions plugin detected. Using configuration file for permissions.";
+    }
+
+}

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.";
+    }
+}

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

@@ -0,0 +1,237 @@
+// $Id$
+/*
+ * 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 java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.HashMap;
+
+import com.sk89q.util.yaml.YAMLProcessor;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.Server;
+
+public class FlatFilePermissionsResolver implements PermissionsResolver {
+    private Map<String, Set<String>> userPermissionsCache;
+    private Set<String> defaultPermissionsCache;
+    private Map<String, Set<String>> userGroups;
+
+    protected File groupFile;
+    protected File userFile;
+
+    public static PermissionsResolver factory(Server server, YAMLProcessor config) {
+        File groups = new File("perms_groups.txt");
+        File users = new File("perms_users.txt");
+
+        if (!groups.exists() || !users.exists()) {
+            return null;
+        }
+
+        return new FlatFilePermissionsResolver(groups, users);
+    }
+
+    public FlatFilePermissionsResolver() {
+        this(new File("perms_groups.txt"), new File("perms_users.txt"));
+    }
+
+    public FlatFilePermissionsResolver(File groupFile, File userFile) {
+        this.groupFile = groupFile;
+        this.userFile = userFile;
+    }
+
+    @Deprecated
+    public static boolean filesExists() {
+        return (new File("perms_groups.txt")).exists() && (new File("perms_users.txt")).exists();
+    }
+
+    public Map<String, Set<String>> loadGroupPermissions() {
+        Map<String, Set<String>> userGroupPermissions = new HashMap<String, Set<String>>();
+
+        FileReader input = null;
+
+        try {
+            input = new FileReader(this.groupFile);
+            BufferedReader buff = new BufferedReader(input);
+
+            String line;
+            while ((line = buff.readLine()) != null) {
+                line = line.trim();
+
+                // Blank line
+                if (line.length() == 0) {
+                    continue;
+                } else if (line.charAt(0) == ';' || line.charAt(0) == '#') {
+                    continue;
+                }
+
+                String[] parts = line.split(":");
+
+                String key = parts[0];
+
+                if (parts.length > 1) {
+                    String[] perms = parts[1].split(",");
+
+                    Set<String> groupPerms = new HashSet<String>(Arrays.asList(perms));
+                    userGroupPermissions.put(key, groupPerms);
+                }
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        } finally {
+            try {
+                if (input != null) {
+                    input.close();
+                }
+            } catch (IOException e2) {
+            }
+        }
+
+        return userGroupPermissions;
+    }
+
+    public void load() {
+        userGroups = new HashMap<String, Set<String>>();
+        userPermissionsCache = new HashMap<String, Set<String>>();
+        defaultPermissionsCache = new HashSet<String>();
+
+        Map<String, Set<String>> userGroupPermissions = loadGroupPermissions();
+
+        if (userGroupPermissions.containsKey("default")) {
+            defaultPermissionsCache = userGroupPermissions.get("default");
+        }
+
+        FileReader input = null;
+
+        try {
+            input = new FileReader(this.userFile);
+            BufferedReader buff = new BufferedReader(input);
+
+            String line;
+            while ((line = buff.readLine()) != null) {
+                Set<String> permsCache = new HashSet<String>();
+
+                line = line.trim();
+
+                // Blank line
+                if (line.length() == 0) {
+                    continue;
+                } else if (line.charAt(0) == ';' || line.charAt(0) == '#') {
+                    continue;
+                }
+
+                String[] parts = line.split(":");
+
+                String key = parts[0];
+
+                if (parts.length > 1) {
+                    String[] groups = (parts[1] + ",default").split(",");
+                    String[] perms = parts.length > 2 ? parts[2].split(",") : new String[0];
+
+                    permsCache.addAll(Arrays.asList(perms));
+
+                    for (String group : groups) {
+                        Set<String> groupPerms = userGroupPermissions.get(group);
+                        if (groupPerms != null) {
+                            permsCache.addAll(groupPerms);
+                        }
+                    }
+
+                    userPermissionsCache.put(key.toLowerCase(), permsCache);
+                    userGroups.put(key.toLowerCase(), new HashSet<String>(Arrays.asList(groups)));
+                }
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        } finally {
+            try {
+                if (input != null) {
+                    input.close();
+                }
+            } catch (IOException e2) {
+            }
+        }
+    }
+
+    public boolean hasPermission(String player, String permission) {
+        int dotPos = permission.lastIndexOf(".");
+        if (dotPos > -1) {
+            if (hasPermission(player, permission.substring(0, dotPos))) {
+                return true;
+            }
+        }
+
+        Set<String> perms = userPermissionsCache.get(player.toLowerCase());
+        if (perms == null) {
+            return defaultPermissionsCache.contains(permission)
+                    || defaultPermissionsCache.contains("*");
+        }
+
+        return perms.contains("*") || perms.contains(permission);
+    }
+
+    public boolean hasPermission(String worldName, String player, String permission) {
+        return hasPermission(player, "worlds." + worldName + "." + permission)
+                || hasPermission(player, permission);
+    }
+
+    public boolean inGroup(String player, String group) {
+        Set<String> groups = userGroups.get(player.toLowerCase());
+        if (groups == null) {
+            return false;
+        }
+
+        return groups.contains(group);
+    }
+
+    public String[] getGroups(String player) {
+        Set<String> groups = userGroups.get(player.toLowerCase());
+        if (groups == null) {
+            return new String[0];
+        }
+
+        return groups.toArray(new String[groups.size()]);
+    }
+
+    public boolean hasPermission(OfflinePlayer player, String permission) {
+        return hasPermission(player.getName(), permission);
+    }
+
+    public boolean hasPermission(String worldName, OfflinePlayer player, String permission) {
+        return hasPermission(worldName, player.getName(), permission);
+    }
+
+    public boolean inGroup(OfflinePlayer player, String group) {
+        return inGroup(player.getName(), group);
+    }
+
+    public String[] getGroups(OfflinePlayer player) {
+        return getGroups(player.getName());
+    }
+
+    public String getDetectionMessage() {
+        return "perms_groups.txt and perms_users.txt detected! Using flat file permissions.";
+    }
+
+}

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

@@ -0,0 +1,161 @@
+// $Id$
+/*
+ * 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.Bukkit;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.Server;
+import org.bukkit.command.PluginCommand;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.plugin.PluginManager;
+import com.nijikokun.bukkit.Permissions.Permissions;
+
+public class NijiPermissionsResolver implements PermissionsResolver {
+    private Server server;
+    private Permissions api;
+
+    public static PermissionsResolver factory(Server server, YAMLProcessor config) {
+        PluginManager pluginManager = server.getPluginManager();
+        try {
+            Class.forName("com.nijikokun.bukkit.Permissions.Permissions");
+        } catch (ClassNotFoundException e) {
+            return null;
+        }
+
+        Plugin plugin = pluginManager.getPlugin("Permissions");
+
+        // Check if plugin is loaded and has Permissions interface
+        if (plugin == null || !(plugin instanceof Permissions)) {
+            return null;
+        }
+
+        // Check for fake permissions
+        if (config.getBoolean("ignore-nijiperms-bridges", true) && isFakeNijiPerms(plugin)) {
+            return null;
+        }
+
+        return new NijiPermissionsResolver(server, (Permissions) plugin);
+    }
+
+    public void load() {
+
+    }
+
+    public NijiPermissionsResolver(Server server, Permissions plugin) {
+        this.server = server;
+        this.api = plugin;
+    }
+
+    @SuppressWarnings("static-access")
+    public boolean hasPermission(String name, String permission) {
+        try {
+            Player player = server.getPlayerExact(name);
+            if (player == null) return false;
+            try {
+                return api.getHandler().has(player, permission);
+            } catch (Throwable t) {
+                return api.Security.permission(player, permission);
+            }
+        } catch (Throwable t) {
+            t.printStackTrace();
+            return false;
+        }
+    }
+
+    public boolean hasPermission(String worldName, String name, String permission) {
+        try {
+            try {
+                return api.getHandler().has(worldName, name, permission);
+            } catch (Throwable t) {
+                return api.getHandler().has(server.getPlayerExact(name), permission);
+            }
+        } catch (Throwable t) {
+            t.printStackTrace();
+            return false;
+        }
+    }
+
+    @SuppressWarnings("static-access")
+    public boolean inGroup(String name, String group) {
+        try {
+            Player player = server.getPlayerExact(name);
+            if (player == null) return false;
+            try {
+                return api.getHandler().inGroup(player.getWorld().getName(), name, group);
+            } catch (Throwable t) {
+                return api.Security.inGroup(name, group);
+            }
+        } catch (Throwable t) {
+            t.printStackTrace();
+            return false;
+        }
+    }
+
+    @SuppressWarnings("static-access")
+    public String[] getGroups(String name) {
+        try {
+            Player player = server.getPlayerExact(name);
+            if (player == null) return new String[0];
+            String[] groups = null;
+            try {
+                groups = api.getHandler().getGroups(player.getWorld().getName(), player.getName());
+            } catch (Throwable t) {
+                String group = api.Security.getGroup(player.getWorld().getName(), player.getName());
+                if (group != null) groups = new String[] { group };
+            }
+            if (groups == null) {
+                return new String[0];
+            } else {
+                return groups;
+            }
+        } catch (Throwable t) {
+            t.printStackTrace();
+            return new String[0];
+        }
+    }
+
+    public boolean hasPermission(OfflinePlayer player, String permission) {
+        return hasPermission(player.getName(), permission);
+    }
+
+    public boolean hasPermission(String worldName, OfflinePlayer player, String permission) {
+        return hasPermission(worldName, player.getName(), permission);
+    }
+
+    public boolean inGroup(OfflinePlayer player, String group) {
+        return inGroup(player.getName(), group);
+    }
+
+    public String[] getGroups(OfflinePlayer player) {
+        return getGroups(player.getName());
+    }
+
+    public static boolean isFakeNijiPerms(Plugin plugin) {
+        PluginCommand permsCommand = Bukkit.getServer().getPluginCommand("permissions");
+
+        return permsCommand == null || !(permsCommand.getPlugin().equals(plugin));
+    }
+
+    public String getDetectionMessage() {
+        return "Permissions plugin detected! Using Permissions plugin for permissions.";
+    }
+}

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

@@ -0,0 +1,102 @@
+// $Id$
+/*
+ * 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 ru.tehkode.permissions.PermissionManager;
+import ru.tehkode.permissions.PermissionUser;
+
+public class PermissionsExResolver implements PermissionsResolver {
+    private final PermissionManager manager;
+    private final Server server;
+
+    public static PermissionsResolver factory(Server server, YAMLProcessor config) {
+        try {
+            PermissionManager manager = server.getServicesManager().load(PermissionManager.class);
+
+            if (manager == null) {
+                return null;
+            }
+
+            return new PermissionsExResolver(server, manager);
+        } catch (Throwable t) {
+            return null;
+        }
+    }
+
+    public PermissionsExResolver(Server server, PermissionManager manager) {
+        this.server = server;
+        this.manager = manager;
+    }
+
+    public void load() {
+
+    }
+
+    public boolean hasPermission(String name, String permission) {
+        Player player = server.getPlayerExact(name);
+        return manager.has(name, permission, player == null ? null : player.getWorld().getName());
+    }
+
+    public boolean hasPermission(String worldName, String name, String permission) {
+        return manager.has(name, permission, worldName);
+    }
+
+    public boolean inGroup(String player, String group) {
+        PermissionUser user = manager.getUser(player);
+        if (user == null) {
+            return false;
+        }
+        return user.inGroup(group);
+    }
+
+    public String[] getGroups(String player) {
+        PermissionUser user = manager.getUser(player);
+        if (user == null) {
+            return new String[0];
+        }
+        return user.getGroupsNames();
+    }
+
+    public boolean hasPermission(OfflinePlayer player, String permission) {
+        Player onlinePlayer = player.getPlayer();
+        return manager.has(player.getName(), permission, onlinePlayer == null ? null : onlinePlayer.getWorld().getName());
+    }
+
+    public boolean hasPermission(String worldName, OfflinePlayer player, String permission) {
+        return hasPermission(worldName, player.getName(), permission);
+    }
+
+    public boolean inGroup(OfflinePlayer player, String group) {
+        return inGroup(player.getName(), group);
+    }
+
+    public String[] getGroups(OfflinePlayer player) {
+        return getGroups(player.getName());
+    }
+
+    public String getDetectionMessage() {
+        return "PermissionsEx detected! Using PermissionsEx for permissions.";
+    }
+}

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

@@ -0,0 +1,40 @@
+// $Id$
+/*
+ * WorldEdit
+ * Copyright (C) 2010, 2011 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 org.bukkit.OfflinePlayer;
+
+public interface PermissionsProvider {
+    public boolean hasPermission(String name, String permission);
+
+    public boolean hasPermission(String worldName, String name, String permission);
+
+    public boolean inGroup(String player, String group);
+
+    public String[] getGroups(String player);
+
+    public boolean hasPermission(OfflinePlayer player, String permission);
+
+    public boolean hasPermission(String worldName, OfflinePlayer player, String permission);
+
+    public boolean inGroup(OfflinePlayer player, String group);
+
+    public String[] getGroups(OfflinePlayer player);
+}

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

@@ -0,0 +1,26 @@
+// $Id$
+/*
+ * 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;
+
+public interface PermissionsResolver extends PermissionsProvider {
+    public void load();
+
+    public String getDetectionMessage();
+}

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

@@ -0,0 +1,272 @@
+// $Id$
+/*
+ * 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.bukkit.migration.LegacyPluginPermissionsResolver;
+import com.sk89q.util.yaml.YAMLFormat;
+import com.sk89q.util.yaml.YAMLProcessor;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.Server;
+import org.bukkit.plugin.Plugin;
+
+import java.io.File;
+import java.io.IOException;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Iterator;
+import java.util.List;
+import java.util.logging.Logger;
+
+public class PermissionsResolverManager implements PermissionsResolver {
+    private static final String CONFIG_HEADER = "#\r\n" +
+            "# WEPIF Configuration File\r\n" +
+            "#\r\n" +
+            "# This file handles permissions configuration for every plugin using WEPIF\r\n" +
+            "#\r\n" +
+            "# About editing this file:\r\n" +
+            "# - DO NOT USE TABS. You MUST use spaces or Bukkit will complain. If\r\n" +
+            "#   you use an editor like Notepad++ (recommended for Windows users), you\r\n" +
+            "#   must configure it to \"replace tabs with spaces.\" In Notepad++, this can\r\n" +
+            "#   be changed in Settings > Preferences > Language Menu.\r\n" +
+            "# - Don't get rid of the indents. They are indented so some entries are\r\n" +
+            "#   in categories (like \"enforce-single-session\" is in the \"protection\"\r\n" +
+            "#   category.\r\n" +
+            "# - If you want to check the format of this file before putting it\r\n" +
+            "#   into WEPIF, paste it into http://yaml-online-parser.appspot.com/\r\n" +
+            "#   and see if it gives \"ERROR:\".\r\n" +
+            "# - Lines starting with # are comments and so they are ignored.\r\n" +
+            "#\r\n" +
+            "# About Configuration Permissions\r\n" +
+            "# - See http://wiki.sk89q.com/wiki/WorldEdit/Permissions/Bukkit\r\n" +
+            "# - Now with multiworld support (see example)\r\n" +
+            "\r\n";
+
+    private static PermissionsResolverManager instance;
+
+    public static void initialize(Plugin plugin) {
+        if (instance == null) {
+            instance = new PermissionsResolverManager(plugin);
+        }
+    }
+
+    public static PermissionsResolverManager getInstance() {
+        if (instance == null) {
+            throw new WEPIFRutimeException("WEPIF has not yet been initialized!");
+        }
+        return instance;
+    }
+
+    private Server server;
+    private PermissionsResolver permissionResolver;
+    private PermissionsResolverServerListener listener;
+    private YAMLProcessor config;
+    private Logger logger = Logger.getLogger(getClass().getCanonicalName());
+    private List<Class<? extends PermissionsResolver>> enabledResolvers = new ArrayList<Class<? extends PermissionsResolver>>();
+
+    @SuppressWarnings("unchecked")
+    protected Class<? extends PermissionsResolver>[] availableResolvers = new Class[] {
+            PluginPermissionsResolver.class,
+            LegacyPluginPermissionsResolver.class,
+            PermissionsExResolver.class,
+            NijiPermissionsResolver.class,
+            DinnerPermsResolver.class,
+            FlatFilePermissionsResolver.class
+    };
+
+    protected PermissionsResolverManager(Plugin plugin) {
+        this.server = plugin.getServer();
+        this.listener = new PermissionsResolverServerListener(this, plugin);
+
+        loadConfig(new File("wepif.yml"));
+        findResolver();
+    }
+
+    public void findResolver() {
+        for (Class<? extends PermissionsResolver> resolverClass : enabledResolvers) {
+            try {
+                Method factoryMethod = resolverClass.getMethod("factory", Server.class, YAMLProcessor.class);
+
+                this.permissionResolver = (PermissionsResolver) factoryMethod.invoke(null, this.server, this.config);
+
+                if (this.permissionResolver != null) {
+                    break;
+                }
+            } catch (Throwable e) {
+                logger.warning("Error in factory method for " + resolverClass.getSimpleName() + ": " + e);
+                e.printStackTrace();
+                continue;
+            }
+        }
+        if (permissionResolver == null) {
+            permissionResolver = new ConfigurationPermissionsResolver(config);
+        }
+        permissionResolver.load();
+        logger.info("WEPIF: " + permissionResolver.getDetectionMessage());
+    }
+
+    public void setPluginPermissionsResolver(Plugin plugin) {
+        if (!(plugin instanceof PermissionsProvider)) {
+            return;
+        }
+
+        permissionResolver = new PluginPermissionsResolver((PermissionsProvider) plugin, plugin);
+        logger.info("WEPIF: " + permissionResolver.getDetectionMessage());
+    }
+
+    public void load() {
+        findResolver();
+        permissionResolver.load();
+    }
+
+    public boolean hasPermission(String name, String permission) {
+        return permissionResolver.hasPermission(name, permission);
+    }
+
+    public boolean hasPermission(String worldName, String name, String permission) {
+        return permissionResolver.hasPermission(worldName, name, permission);
+    }
+
+    public boolean inGroup(String player, String group) {
+        return permissionResolver.inGroup(player, group);
+    }
+
+    public String[] getGroups(String player) {
+        return permissionResolver.getGroups(player);
+    }
+
+    public boolean hasPermission(OfflinePlayer player, String permission) {
+        return permissionResolver.hasPermission(player, permission);
+    }
+
+    public boolean hasPermission(String worldName, OfflinePlayer player, String permission) {
+        return permissionResolver.hasPermission(worldName, player, permission);
+    }
+
+    public boolean inGroup(OfflinePlayer player, String group) {
+        return permissionResolver.inGroup(player, group);
+    }
+
+    public String[] getGroups(OfflinePlayer player) {
+        return permissionResolver.getGroups(player);
+    }
+
+    private boolean loadConfig(File file) {
+        boolean isUpdated = false;
+        if (!file.exists()) {
+            try {
+                file.createNewFile();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+        config = new YAMLProcessor(file, false, YAMLFormat.EXTENDED);
+        try {
+            config.load();
+        } catch (IOException e) {
+            logger.severe("Error loading WEPIF Config: " + e);
+            e.printStackTrace();
+        }
+        List<String> keys = config.getKeys(null);
+        config.setHeader(CONFIG_HEADER);
+
+        if (!keys.contains("ignore-nijiperms-bridges")) {
+            config.setProperty("ignore-nijiperms-bridges", true);
+            isUpdated = true;
+        }
+
+        if (!keys.contains("resolvers")) {
+            //List<String> resolverKeys = config.getKeys("resolvers");
+            List<String> resolvers = new ArrayList<String>();
+            for (Class<?> clazz : availableResolvers) {
+                resolvers.add(clazz.getSimpleName());
+            }
+            enabledResolvers.addAll(Arrays.asList(availableResolvers));
+            config.setProperty("resolvers.enabled", resolvers);
+            isUpdated = true;
+        } else {
+            List<String> disabledResolvers = config.getStringList("resolvers.disabled", new ArrayList<String>());
+            List<String> stagedEnabled = config.getStringList("resolvers.enabled", null);
+            for (Iterator<String> i = stagedEnabled.iterator(); i.hasNext();) {
+                String nextName = i.next();
+                Class<?> next = null;
+                try {
+                    next = Class.forName(getClass().getPackage().getName() + "." + nextName);
+                } catch (ClassNotFoundException e) {}
+                
+                if (next == null || !PermissionsResolver.class.isAssignableFrom(next)) {
+                    logger.warning("WEPIF: Invalid or unknown class found in enabled resolvers: "
+                            + nextName + ". Moving to disabled resolvers list.");
+                    i.remove();
+                    disabledResolvers.add(nextName);
+                    isUpdated = true;
+                    continue;
+                }
+                enabledResolvers.add(next.asSubclass(PermissionsResolver.class));
+            }
+
+            for (Class<?> clazz : availableResolvers) {
+                if (!stagedEnabled.contains(clazz.getSimpleName()) &&
+                        !disabledResolvers.contains(clazz.getSimpleName())) {
+                    disabledResolvers.add(clazz.getSimpleName());
+                    logger.info("New permissions resolver: "
+                            + clazz.getSimpleName() + " detected. " +
+                            "Added to disabled resolvers list.");
+                    isUpdated = true;
+                }
+            }
+            config.setProperty("resolvers.disabled", disabledResolvers);
+            config.setProperty("resolvers.enabled", stagedEnabled);
+        }
+
+        if (keys.contains("dinner-perms") || keys.contains("dinnerperms")) {
+            config.setProperty("dinner-perms", null);
+            config.setProperty("dinnerperms", null);
+            isUpdated = true;
+        }
+        if (!keys.contains("permissions")) {
+            ConfigurationPermissionsResolver.generateDefaultPerms(
+                    config.addNode("permissions"));
+            isUpdated = true;
+        }
+        if (isUpdated) {
+            logger.info("WEPIF: Updated config file");
+            config.save();
+        }
+        return isUpdated;
+    }
+
+    boolean hasServerListener() {
+        return listener != null;
+    }
+
+    void setServerListener(PermissionsResolverServerListener listener) {
+        this.listener = listener;
+    }
+
+    public static class MissingPluginException extends Exception {
+        private static final long serialVersionUID = 7044832912491608706L;
+    }
+
+    public String getDetectionMessage() {
+        return "Using WEPIF for permissions";
+    }
+
+}

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

@@ -0,0 +1,80 @@
+// $Id$
+/*
+ * 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 org.bukkit.event.Event;
+import org.bukkit.event.Event.Priority;
+import org.bukkit.event.server.PluginDisableEvent;
+import org.bukkit.event.server.PluginEnableEvent;
+import org.bukkit.event.server.ServerListener;
+import org.bukkit.plugin.Plugin;
+
+public class PermissionsResolverServerListener extends ServerListener {
+    private PermissionsResolverManager manager;
+
+    public PermissionsResolverServerListener(PermissionsResolverManager manager, Plugin plugin) {
+        this.manager = manager;
+        if (!manager.hasServerListener()) {
+            register(plugin);
+        }
+    }
+
+    /**
+     * Called when a plugin is enabled
+     *
+     * @param event Relevant event details
+     */
+    @Override
+    public void onPluginEnable(PluginEnableEvent event) {
+        Plugin plugin = event.getPlugin();
+        String name = plugin.getDescription().getName();
+        if (plugin instanceof PermissionsProvider) {
+            manager.setPluginPermissionsResolver(plugin);
+        } else if ("Permissions".equals(name) || "PermissionsEx".equals(name)) {
+            manager.findResolver();
+            manager.load();
+        }
+    }
+
+    /**
+     * Called when a plugin is disabled
+     *
+     * @param event Relevant event details
+     */
+    @Override
+    public void onPluginDisable(PluginDisableEvent event) {
+        Plugin plugin = event.getPlugin();
+        String name = plugin.getDescription().getName();
+
+        if (plugin instanceof PermissionsProvider || "Permissions".equals(name) || "PermissionsEx".equals(name)) {
+            manager.findResolver();
+            manager.load();
+        }
+    }
+
+    public void register(Plugin plugin) {
+        plugin.getServer().getPluginManager().registerEvent(Event.Type.PLUGIN_ENABLE,
+                this, Priority.Normal, plugin);
+        plugin.getServer().getPluginManager().registerEvent(Event.Type.PLUGIN_DISABLE,
+                this, Priority.Normal, plugin);
+        manager.setServerListener(this);
+    }
+
+}

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

@@ -0,0 +1,95 @@
+// $Id$
+/*
+ * WorldEdit
+ * Copyright (C) 2010, 2011 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.plugin.Plugin;
+import org.bukkit.plugin.RegisteredServiceProvider;
+
+public class PluginPermissionsResolver implements PermissionsResolver {
+
+    protected PermissionsProvider resolver;
+    protected Plugin plugin;
+
+    public static PermissionsResolver factory(Server server, YAMLProcessor config) {
+        // Looking for service
+        RegisteredServiceProvider<PermissionsProvider> serviceProvider = server.getServicesManager().getRegistration(PermissionsProvider.class);
+
+        if (serviceProvider != null) {
+            return new PluginPermissionsResolver(serviceProvider.getProvider(), serviceProvider.getPlugin());
+        }
+
+        // Looking for plugin
+        for (Plugin plugin : server.getPluginManager().getPlugins()) {
+            if (plugin instanceof PermissionsProvider) {
+                return new PluginPermissionsResolver((PermissionsProvider) plugin, plugin);
+            }
+        }
+
+        return null;
+    }
+
+    public PluginPermissionsResolver(PermissionsProvider resolver, Plugin permissionsPlugin) {
+        this.resolver = resolver;
+        this.plugin = permissionsPlugin;
+    }
+
+    public void load() {
+    }
+
+    public boolean hasPermission(String name, String permission) {
+        return resolver.hasPermission(name, permission);
+    }
+
+    public boolean hasPermission(String worldName, String name, String permission) {
+        return resolver.hasPermission(worldName, name, permission);
+    }
+
+    public boolean inGroup(String player, String group) {
+        return resolver.inGroup(player, group);
+    }
+
+    public String[] getGroups(String player) {
+        return resolver.getGroups(player);
+    }
+
+    public boolean hasPermission(OfflinePlayer player, String permission) {
+        return resolver.hasPermission(player, permission);
+    }
+
+    public boolean hasPermission(String worldName, OfflinePlayer player, String permission) {
+        return resolver.hasPermission(worldName, player, permission);
+    }
+
+    public boolean inGroup(OfflinePlayer player, String group) {
+        return resolver.inGroup(player, group);
+    }
+
+    public String[] getGroups(OfflinePlayer player) {
+        return resolver.getGroups(player);
+    }
+
+    public String getDetectionMessage() {
+        return "Using plugin '" + this.plugin.getDescription().getName() + "' for permissions.";
+    }
+
+}

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

@@ -0,0 +1,12 @@
+package com.sk89q.wepif;
+
+/**
+ * @author zml2008
+ */
+public class WEPIFRutimeException extends RuntimeException {
+    
+    public WEPIFRutimeException(String message) {
+        super(message);
+    }
+
+}