L2ClientDat decoder.

L2ClientDat/java/com/l2jmobius/actions/OpenDat.java

@@ -0,0 +1,143 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * 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.l2jmobius.actions;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.channels.FileChannel;
+
+import com.l2jmobius.L2ClientDat;
+import com.l2jmobius.clientcryptor.DatFile;
+import com.l2jmobius.clientcryptor.crypt.DatCrypter;
+import com.l2jmobius.data.GameDataName;
+import com.l2jmobius.util.DebugUtil;
+import com.l2jmobius.xml.Descriptor;
+import com.l2jmobius.xml.DescriptorParser;
+import com.l2jmobius.xml.DescriptorReader;
+
+public class OpenDat
+{
+	public static void start(String dir, File path, String name, DatCrypter crypter) throws Exception
+	{
+		ByteBuffer buffer;
+		boolean crypt = true;
+		if (!path.exists())
+		{
+			L2ClientDat.addLogConsole("File does not exist.", true);
+			return;
+		}
+		if (!path.canRead())
+		{
+			L2ClientDat.addLogConsole("Unable to read file.", true);
+			return;
+		}
+		FileInputStream fis = new FileInputStream(path);
+		if (fis.available() < 28)
+		{
+			L2ClientDat.addLogConsole("The file is too small.", true);
+			fis.close();
+			return;
+		}
+		byte[] head = new byte[28];
+		fis.read(head);
+		String header = new String(head, "UTF-16LE");
+		if (!header.startsWith("Lineage2Ver"))
+		{
+			L2ClientDat.addLogConsole("File " + name + " not encrypted. Skip decrypt.", true);
+			crypt = false;
+		}
+		fis.close();
+		buffer = null;
+		if (crypt)
+		{
+			L2ClientDat.addLogConsole("File " + name + " encrypted. " + header + " decrypt ...", true);
+			try
+			{
+				DatFile dat = new DatFile(path.getPath());
+				dat.decrypt(crypter);
+				buffer = dat.getBuff();
+				if (buffer == null)
+				{
+					L2ClientDat.addLogConsole("Error decrypt file. Empty buffer.", true);
+					return;
+				}
+			}
+			catch (Exception e)
+			{
+				L2ClientDat.addLogConsole("Error decrypt file.", true);
+				return;
+			}
+			DebugUtil.save(buffer, path);
+			L2ClientDat.addLogConsole("Decrypt successfully.", true);
+		}
+		else
+		{
+			try
+			{
+				try (FileInputStream fIn = new FileInputStream(path);)
+				{
+					FileChannel fChan = fIn.getChannel();
+					ByteBuffer mBuf = ByteBuffer.allocate((int) fChan.size());
+					fChan.read(mBuf);
+					buffer = mBuf;
+					fChan.close();
+					fIn.close();
+				}
+			}
+			catch (IOException exc)
+			{
+				L2ClientDat.addLogConsole("Error reading.", true);
+			}
+		}
+		if (name.contains(".ini") || name.contains(".txt"))
+		{
+			if ((buffer != null) && buffer.hasArray())
+			{
+				L2ClientDat.addText(new String(buffer.array(), 0, buffer.array().length, "UTF-8"));
+			}
+		}
+		else if (name.contains(".htm"))
+		{
+			if ((buffer != null) && buffer.hasArray())
+			{
+				L2ClientDat.addText(new String(buffer.array(), 0, buffer.array().length, "UTF-16"));
+			}
+		}
+		else if (crypter.isUseStructure())
+		{
+			L2ClientDat.addLogConsole("Read the file structure ...", true);
+			String data = null;
+			Descriptor desc = DescriptorParser.getInstance().findDescriptorForFile(dir, name);
+			if ((desc != null) && (buffer != null))
+			{
+				buffer.position(0);
+				DebugUtil.debug("Buffer size: " + buffer.limit());
+				GameDataName.getInstance().clear();
+				data = DescriptorReader.getInstance().parseData(path, crypter, desc, buffer);
+			}
+			if (data == null)
+			{
+				L2ClientDat.addLogConsole("Structure is not found in the directory: " + dir + " file: " + name, true);
+				return;
+			}
+			L2ClientDat.addText(data);
+		}
+		L2ClientDat.addLogConsole("Completed.", true);
+	}
+}