499 lines
16 KiB
Java
499 lines
16 KiB
Java
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*/
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package org.anjocaido.groupmanager.permissions;
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import java.lang.reflect.Field;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.LinkedHashMap;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.ListIterator;
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import java.util.Map;
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import java.util.Set;
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import java.util.WeakHashMap;
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import org.anjocaido.groupmanager.GroupManager;
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import org.anjocaido.groupmanager.data.User;
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import org.bukkit.Bukkit;
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import org.bukkit.entity.Player;
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import org.bukkit.event.EventHandler;
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import org.bukkit.event.EventPriority;
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import org.bukkit.event.Listener;
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import org.bukkit.event.player.PlayerChangedWorldEvent;
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import org.bukkit.event.player.PlayerJoinEvent;
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import org.bukkit.event.player.PlayerQuitEvent;
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import org.bukkit.event.server.PluginDisableEvent;
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import org.bukkit.event.server.PluginEnableEvent;
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import org.bukkit.permissions.Permission;
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import org.bukkit.permissions.PermissionAttachment;
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import org.bukkit.permissions.PermissionAttachmentInfo;
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import org.bukkit.plugin.PluginManager;
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/**
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*
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* BukkitPermissions overrides to force GM reponses to Superperms
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*
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* @author ElgarL
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*/
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public class BukkitPermissions {
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private static Field permissions;
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// Setup reflection (Thanks to Codename_B for the reflection source)
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static {
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try {
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permissions = PermissionAttachment.class.getDeclaredField("permissions");
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permissions.setAccessible(true);
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} catch (final SecurityException e) {
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e.printStackTrace();
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} catch (final NoSuchFieldException e) {
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e.printStackTrace();
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}
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}
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protected WeakHashMap<String, PermissionAttachment> attachments = new WeakHashMap<String, PermissionAttachment>();
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protected LinkedHashMap<String, Permission> registeredPermissions = new LinkedHashMap<String, Permission>();
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protected GroupManager plugin;
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protected boolean dumpAllPermissions = true;
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protected boolean dumpMatchedPermissions = true;
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private boolean player_join = false;
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public BukkitPermissions(final GroupManager plugin) {
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this.plugin = plugin;
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this.reset();
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this.registerEvents();
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GroupManager.logger.info("Superperms support enabled.");
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}
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public void collectPermissions() {
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registeredPermissions.clear();
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for (final Permission perm : Bukkit.getPluginManager().getPermissions()) {
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registeredPermissions.put(perm.getName().toLowerCase(), perm);
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}
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}
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/**
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* Returns a map of ALL child permissions registered with bukkit
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* null is empty
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*
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* @param node
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* @param playerPermArray
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* current list of perms to check against for
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* negations
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* @return Map of child permissions
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*/
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public Map<String, Boolean> getAllChildren(final String node, final Set<String> playerPermArray) {
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final LinkedList<String> stack = new LinkedList<String>();
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final Map<String, Boolean> alreadyVisited = new HashMap<String, Boolean>();
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stack.push(node);
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alreadyVisited.put(node, true);
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while (!stack.isEmpty()) {
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final String now = stack.pop();
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final Map<String, Boolean> children = getChildren(now);
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if ((children != null) && (!playerPermArray.contains("-" + now))) {
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for (final String childName : children.keySet()) {
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if (!alreadyVisited.containsKey(childName)) {
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stack.push(childName);
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alreadyVisited.put(childName, children.get(childName));
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}
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}
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}
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}
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alreadyVisited.remove(node);
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if (!alreadyVisited.isEmpty())
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return alreadyVisited;
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return null;
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}
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/**
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* Fetch all permissions which are registered with superperms.
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* {can include child nodes)
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*
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* @param includeChildren
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* @return List of all permission nodes
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*/
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public List<String> getAllRegisteredPermissions(final boolean includeChildren) {
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final List<String> perms = new ArrayList<String>();
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for (final String key : registeredPermissions.keySet()) {
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if (!perms.contains(key)) {
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perms.add(key);
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if (includeChildren) {
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final Map<String, Boolean> children = getAllChildren(key, new HashSet<String>());
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if (children != null) {
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for (final String node : children.keySet())
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if (!perms.contains(node))
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perms.add(node);
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}
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}
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}
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}
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return perms;
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}
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/**
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* Returns a map of the child permissions (1 node deep) as registered with
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* Bukkit.
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* null is empty
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*
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* @param node
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* @return Map of child permissions
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*/
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public Map<String, Boolean> getChildren(final String node) {
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final Permission perm = registeredPermissions.get(node.toLowerCase());
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if (perm == null)
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return null;
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return perm.getChildren();
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}
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/**
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* @return the player_join
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*/
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public boolean isPlayer_join() {
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return player_join;
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}
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/**
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* List all effective permissions for this player.
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*
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* @param player
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* @return List<String> of permissions
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*/
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public List<String> listPerms(final Player player) {
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final List<String> perms = new ArrayList<String>();
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/*
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* // All permissions registered with Bukkit for this player
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* PermissionAttachment attachment = this.attachments.get(player);
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*
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* // List perms for this player perms.add("Attachment Permissions:");
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* for(Map.Entry<String, Boolean> entry :
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* attachment.getPermissions().entrySet()){ perms.add(" " +
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* entry.getKey() + " = " + entry.getValue()); }
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*/
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perms.add("Effective Permissions:");
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for (final PermissionAttachmentInfo info : player.getEffectivePermissions()) {
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if (info.getValue() == true)
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perms.add(" " + info.getPermission() + " = " + info.getValue());
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}
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return perms;
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}
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/**
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* Remove all attachments in case of a restart or reload.
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*/
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public void removeAllAttachments() {
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/*
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* Remove all attachments.
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*/
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for (final String key : attachments.keySet()) {
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attachments.get(key).remove();
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}
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attachments.clear();
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}
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public void reset() {
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/*
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* collect new permissions
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* and register all attachments.
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*/
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this.collectPermissions();
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this.updateAllPlayers();
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}
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/**
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* @param player_join
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* the player_join to set
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*/
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public void setPlayer_join(final boolean player_join) {
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this.player_join = player_join;
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}
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/**
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* force Bukkit to update every OnlinePlayers permissions.
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*/
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public void updateAllPlayers() {
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for (final Player player : Bukkit.getServer().getOnlinePlayers()) {
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updatePermissions(player);
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}
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}
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public void updatePermissions(final Player player) {
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this.updatePermissions(player, null);
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}
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/**
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* Push all permissions which are registered with GM for this player, on
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* this world to Bukkit and make it update for the child nodes.
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*
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* @param player
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* @param world
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*/
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public void updatePermissions(final Player player, String world) {
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if (player == null || !GroupManager.isLoaded()) {
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return;
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}
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final String name = player.getName();
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// Reset the User objects player reference.
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final User user = plugin.getWorldsHolder().getWorldData(player.getWorld().getName()).getUser(name);
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if (user != null)
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user.updatePlayer(player);
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PermissionAttachment attachment;
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// Find the players current attachment, or add a new one.
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if (this.attachments.containsKey(name)) {
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attachment = this.attachments.get(name);
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} else {
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attachment = player.addAttachment(plugin);
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this.attachments.put(name, attachment);
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}
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if (world == null) {
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world = player.getWorld().getName();
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}
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// Add all permissions for this player (GM only)
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// child nodes will be calculated by Bukkit.
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List<String> playerPermArray = new ArrayList<String>(plugin.getWorldsHolder().getWorldData(world).getPermissionsHandler().getAllPlayersPermissions(name, false));
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final LinkedHashMap<String, Boolean> newPerms = new LinkedHashMap<String, Boolean>();
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// Sort the perm list by parent/child, so it will push to superperms
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// correctly.
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playerPermArray = sort(playerPermArray);
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Boolean value = false;
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for (final String permission : playerPermArray) {
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value = (!permission.startsWith("-"));
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newPerms.put((value ? permission : permission.substring(1)), value);
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}
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/*
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* Do not push any perms to bukkit if...
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* We are in offline mode
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* and the player has the 'groupmanager.noofflineperms' permission.
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*/
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if (!Bukkit.getServer().getOnlineMode() && (newPerms.containsKey("groupmanager.noofflineperms") && (newPerms.get("groupmanager.noofflineperms") == true))) {
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removeAttachment(name);
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return;
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}
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/**
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* This is put in place until such a time as Bukkit pull 466 is
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* implemented https://github.com/Bukkit/Bukkit/pull/466
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*/
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try { // Codename_B source
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synchronized (attachment.getPermissible()) {
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@SuppressWarnings("unchecked")
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final Map<String, Boolean> orig = (Map<String, Boolean>) permissions.get(attachment);
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// Clear the map (faster than removing the attachment and
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// recalculating)
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orig.clear();
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// Then whack our map into there
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orig.putAll(newPerms);
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// That's all folks!
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attachment.getPermissible().recalculatePermissions();
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}
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} catch (final IllegalArgumentException e) {
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e.printStackTrace();
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} catch (final IllegalAccessException e) {
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e.printStackTrace();
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}
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GroupManager.logger.finest("Attachment updated for: " + name);
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}
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/**
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* force Bukkit to update this Players permissions.
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*/
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public void updatePlayer(final Player player) {
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if (player != null)
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this.updatePermissions(player, null);
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}
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private void registerEvents() {
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final PluginManager manager = plugin.getServer().getPluginManager();
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manager.registerEvents(new PlayerEvents(), plugin);
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manager.registerEvents(new BukkitEvents(), plugin);
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}
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/**
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* Force remove any attachments
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*
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* @param player
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*/
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private void removeAttachment(final String playerName) {
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if (attachments.containsKey(playerName)) {
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attachments.get(playerName).remove();
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attachments.remove(playerName);
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}
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}
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/**
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* Sort a permission node list by parent/child
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*
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* @param permList
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* @return List sorted for priority
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*/
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private List<String> sort(final List<String> permList) {
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final List<String> result = new ArrayList<String>();
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for (final String key : permList) {
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/*
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* Ignore stupid plugins which add empty permission nodes.
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*/
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if (!key.isEmpty()) {
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final String a = key.charAt(0) == '-' ? key.substring(1) : key;
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final Map<String, Boolean> allchildren = GroupManager.BukkitPermissions.getAllChildren(a, new HashSet<String>());
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if (allchildren != null) {
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final ListIterator<String> itr = result.listIterator();
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while (itr.hasNext()) {
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final String node = itr.next();
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final String b = node.charAt(0) == '-' ? node.substring(1) : node;
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// Insert the parent node before the child
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if (allchildren.containsKey(b)) {
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itr.set(key);
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itr.add(node);
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break;
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}
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}
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}
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if (!result.contains(key))
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result.add(key);
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}
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}
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return result;
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}
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protected class BukkitEvents implements Listener {
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@EventHandler(priority = EventPriority.NORMAL)
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public void onPluginDisable(final PluginDisableEvent event) {
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collectPermissions();
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// updateAllPlayers();
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}
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@EventHandler(priority = EventPriority.NORMAL)
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public void onPluginEnable(final PluginEnableEvent event) {
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if (!GroupManager.isLoaded())
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return;
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collectPermissions();
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updateAllPlayers();
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}
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}
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/**
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* Player events tracked to cause Superperms updates
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*
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* @author ElgarL
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*
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*/
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protected class PlayerEvents implements Listener {
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@EventHandler(priority = EventPriority.LOWEST)
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public void onPlayerChangeWorld(final PlayerChangedWorldEvent event) { // has changed worlds
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updatePermissions(event.getPlayer(), event.getPlayer().getWorld().getName());
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}
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@EventHandler(priority = EventPriority.LOWEST)
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public void onPlayerJoin(final PlayerJoinEvent event) {
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setPlayer_join(true);
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final Player player = event.getPlayer();
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GroupManager.logger.finest("Player Join event: " + player.getName());
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/*
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* Tidy up any lose ends
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*/
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removeAttachment(player.getName());
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// force GM to create the player if they are not already listed.
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plugin.getWorldsHolder().getWorldData(player.getWorld().getName()).getUser(player.getUniqueId().toString(), player.getName());
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setPlayer_join(false);
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updatePermissions(event.getPlayer());
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setPlayer_join(false);
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}
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/*
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* Trigger at highest so we tidy up last.
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*/
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@EventHandler(priority = EventPriority.HIGHEST)
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public void onPlayerQuit(final PlayerQuitEvent event) {
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if (!GroupManager.isLoaded())
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return;
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final Player player = event.getPlayer();
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/*
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* force remove any attachments as bukkit may not
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*/
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removeAttachment(player.getName());
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}
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}
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}
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