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src/main/java/net/server/channel/handlers/RaiseIncExpHandler.java

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+package net.server.channel.handlers;
+
+import java.util.Map;
+
+import client.MapleCharacter;
+import client.MapleClient;
+import client.MapleQuestStatus;
+import client.inventory.MapleInventory;
+import client.inventory.MapleInventoryType;
+import net.AbstractMaplePacketHandler;
+import client.inventory.manipulator.MapleInventoryManipulator;
+import server.MapleItemInformationProvider;
+import server.MapleItemInformationProvider.QuestConsItem;
+import server.quest.MapleQuest;
+import tools.MaplePacketCreator;
+import tools.data.input.SeekableLittleEndianAccessor;
+
+/**
+ *
+ * @author Xari
+ * @author Ronan - added concurrency protection and quest progress limit
+ */
+public class RaiseIncExpHandler extends AbstractMaplePacketHandler {
+
+    @Override
+    public final void handlePacket(SeekableLittleEndianAccessor slea, MapleClient c) {
+        byte inventorytype = slea.readByte();//nItemIT
+        short slot = slea.readShort();//nSlotPosition
+        int itemid = slea.readInt();//nItemID
+        
+        if (c.tryacquireClient()) {
+            try {
+                MapleItemInformationProvider ii = MapleItemInformationProvider.getInstance();
+                QuestConsItem consItem = ii.getQuestConsumablesInfo(itemid);
+                if (consItem == null) {
+                    return;
+                }
+
+                int infoNumber = consItem.questid;
+                Map<Integer, Integer> consumables = consItem.items;
+                
+                MapleCharacter chr = c.getPlayer();
+                MapleQuest quest = MapleQuest.getInstanceFromInfoNumber(infoNumber);
+                if (!chr.getQuest(quest).getStatus().equals(MapleQuestStatus.Status.STARTED)) {
+                    c.announce(MaplePacketCreator.enableActions());
+                    return;
+                }
+                
+                int consId;
+                MapleInventory inv = chr.getInventory(MapleInventoryType.getByType(inventorytype));
+                inv.lockInventory();
+                try {
+                    consId = inv.getItem(slot).getItemId();
+                    if (!consumables.containsKey(consId) || !chr.haveItem(consId)) {
+                        return;
+                    }
+
+                    MapleInventoryManipulator.removeFromSlot(c, MapleInventoryType.getByType(inventorytype), (short) slot, (short) 1, false, true);
+                } finally {
+                    inv.unlockInventory();
+                }
+                
+                int questid = quest.getId();
+                int nextValue = Math.min(consumables.get(consId) + c.getAbstractPlayerInteraction().getQuestProgressInt(questid, infoNumber), consItem.exp * consItem.grade);
+                c.getAbstractPlayerInteraction().setQuestProgress(questid, infoNumber, nextValue);
+                
+                c.announce(MaplePacketCreator.enableActions());
+            } finally {
+                c.releaseClient();
+            }
+        }
+    }
+}