Login bypass + MapleQuestlineFetcher

Solved an exploit where anyone (via packet editing) could be able to login as any registered character after authenticating and selecting a character.
New tool: MapleQuestlineFetcher. It reports ids from quests which quest script files were not found on the scripts folder.

tools/MapleQuestlineFetcher/src/maplequestlinefetcher/Pair.java

@@ -0,0 +1,121 @@
+/*
+This file is part of the OdinMS Maple Story Server
+Copyright (C) 2008 ~ 2010 Patrick Huy <patrick.huy@frz.cc> 
+Matthias Butz <matze@odinms.de>
+Jan Christian Meyer <vimes@odinms.de>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License version 3
+as published by the Free Software Foundation. You may not use, modify
+or distribute this program under any other version of the
+GNU Affero General Public License.
+
+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 Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package maplequestlinefetcher;
+
+/**
+ * Represents a pair of values.
+ * 
+ * @author Frz
+ * @since Revision 333
+ * @version 1.0
+ * 
+ * @param <E> The type of the left value.
+ * @param <F> The type of the right value.
+ */
+public class Pair<E, F> {
+
+    public E left;
+    public F right;
+
+    /**
+     * Class constructor - pairs two objects together.
+     *
+     * @param left The left object.
+     * @param right The right object.
+     */
+    public Pair(E left, F right) {
+        this.left = left;
+        this.right = right;
+    }
+
+    /**
+     * Gets the left value.
+     *
+     * @return The left value.
+     */
+    public E getLeft() {
+        return left;
+    }
+
+    /**
+     * Gets the right value.
+     *
+     * @return The right value.
+     */
+    public F getRight() {
+        return right;
+    }
+
+    /**
+     * Turns the pair into a string.
+     *
+     * @return Each value of the pair as a string joined by a colon.
+     */
+    @Override
+    public String toString() {
+        return left.toString() + ":" + right.toString();
+    }
+
+    /**
+     * Gets the hash code of this pair.
+     */
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + ((left == null) ? 0 : left.hashCode());
+        result = prime * result + ((right == null) ? 0 : right.hashCode());
+        return result;
+    }
+
+    /**
+     * Checks to see if two pairs are equal.
+     */
+    @SuppressWarnings("unchecked")
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        final Pair other = (Pair) obj;
+        if (left == null) {
+            if (other.left != null) {
+                return false;
+            }
+        } else if (!left.equals(other.left)) {
+            return false;
+        }
+        if (right == null) {
+            if (other.right != null) {
+                return false;
+            }
+        } else if (!right.equals(other.right)) {
+            return false;
+        }
+        return true;
+    }
+}