com.l2jfree.gameserver.datatables.HennaTreeTable.java Source code

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Here is the source code for com.l2jfree.gameserver.datatables.HennaTreeTable.java

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/*
 * 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.l2jfree.gameserver.datatables;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.Map;

import javolution.util.FastList;
import javolution.util.FastMap;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.l2jfree.L2DatabaseFactory;
import com.l2jfree.gameserver.gameobjects.L2Player;
import com.l2jfree.gameserver.model.items.templates.L2Henna;

public class HennaTreeTable {
    private static final Log _log = LogFactory.getLog(HennaTreeTable.class);

    private final Map<Integer, L2Henna[]> _hennaTrees = new FastMap<Integer, L2Henna[]>();

    public static HennaTreeTable getInstance() {
        return SingletonHolder._instance;
    }

    private HennaTreeTable() {
        int classId = 0;
        int count = 0;
        Connection con = null;
        try {
            con = L2DatabaseFactory.getInstance().getConnection(con);
            PreparedStatement statement = con.prepareStatement("SELECT id FROM class_list");
            ResultSet classlist = statement.executeQuery();

            while (classlist.next()) {
                classId = classlist.getInt("id");
                FastList<L2Henna> list = new FastList<L2Henna>();

                PreparedStatement statement2 = con
                        .prepareStatement("SELECT symbol_id FROM henna_trees where class_id=?");
                statement2.setInt(1, classId);
                ResultSet hennatree = statement2.executeQuery();

                while (hennatree.next()) {
                    int id = hennatree.getInt("symbol_id");

                    L2Henna template = HennaTable.getInstance().getTemplate(id);
                    if (template == null) {
                        hennatree.close();
                        statement2.close();
                        classlist.close();
                        statement.close();
                        return;
                    }

                    list.add(template);
                }
                hennatree.close();
                statement2.close();

                count += list.size();
                _hennaTrees.put(classId, list.toArray(new L2Henna[list.size()]));
            }

            classlist.close();
            statement.close();
            _log.info("HennaTreeTable: Loaded " + count + " Henna Tree Templates.");
        } catch (Exception e) {
            _log.warn("Error while creating henna tree for classId " + classId + " ", e);
        } finally {
            L2DatabaseFactory.close(con);
        }
    }

    public L2Henna[] getAvailableHenna(L2Player player) {
        return _hennaTrees.get(player.getClassId().getId());
    }

    /**
     * Prevents henna drawing exploit:
     * 1) talk to L2SymbolMakerInstance
     * 2) RequestHennaList
     * 3) Don't close the window and go to a GrandMaster and change your subclass
     * 4) Get SymbolMaker range again and press draw
     * You could draw any kind of henna just having the required subclass...
     * @param activeChar a player (if it is null, returns false)
     * @param symbolId henna dye ID
     */
    public final boolean isDrawable(L2Player player, int symbolId) {
        if (player == null)
            return false;

        for (L2Henna h : getAvailableHenna(player))
            if (h.getSymbolId() == symbolId)
                return true;
        return false;
    }

    @SuppressWarnings("synthetic-access")
    private static class SingletonHolder {
        protected static final HennaTreeTable _instance = new HennaTreeTable();
    }
}