Sweetgum/sweetgum-server
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Restructure "net" packages

Browse Source
This commit is contained in:
P0nk
2021-07-18 14:26:23 +02:00
parent 11e83522d6
commit 9e3f3cc036
16 changed files with 93 additions and 99 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
src/main/java/net/netty/ClientCyphers.java → src/main/java/net/encryption/ClientCyphers.java
View File

@@ -1,7 +1,6 @@
package net.netty;
package net.encryption;
import constants.net.ServerConstants;
import tools.MapleAESOFB;
public class ClientCyphers {
private final MapleAESOFB send;

2
src/main/java/net/netty/InitializationVector.java → src/main/java/net/encryption/InitializationVector.java
View File

@@ -1,4 +1,4 @@
package net.netty;
package net.encryption;
public class InitializationVector {
private final byte[] bytes;

219
src/main/java/net/encryption/MapleAESOFB.java Normal file
View File

@@ -0,0 +1,219 @@
/*
This file is part of the OdinMS Maple Story Server
Copyright (C) 2008 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 as
published by the Free Software Foundation 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 net.encryption;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import tools.HexTool;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.SecretKeySpec;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
public class MapleAESOFB {
private static final Logger log = LoggerFactory.getLogger(MapleAESOFB.class);
private final static SecretKeySpec skey = new SecretKeySpec(
new byte[]{
0x13, 0x00, 0x00, 0x00,
0x08, 0x00, 0x00, 0x00,
0x06, 0x00, 0x00, 0x00,
(byte) 0xB4, 0x00, 0x00, 0x00,
0x1B, 0x00, 0x00, 0x00,
0x0F, 0x00, 0x00, 0x00,
0x33, 0x00, 0x00, 0x00,
0x52, 0x00, 0x00, 0x00}, "AES");
private static final byte[] funnyBytes = new byte[]{
(byte) 0xEC, (byte) 0x3F, (byte) 0x77, (byte) 0xA4, (byte) 0x45, (byte) 0xD0, (byte) 0x71, (byte) 0xBF,
(byte) 0xB7, (byte) 0x98, (byte) 0x20, (byte) 0xFC, (byte) 0x4B, (byte) 0xE9, (byte) 0xB3, (byte) 0xE1,
(byte) 0x5C, (byte) 0x22, (byte) 0xF7, (byte) 0x0C, (byte) 0x44, (byte) 0x1B, (byte) 0x81, (byte) 0xBD,
(byte) 0x63, (byte) 0x8D, (byte) 0xD4, (byte) 0xC3, (byte) 0xF2, (byte) 0x10, (byte) 0x19, (byte) 0xE0,
(byte) 0xFB, (byte) 0xA1, (byte) 0x6E, (byte) 0x66, (byte) 0xEA, (byte) 0xAE, (byte) 0xD6, (byte) 0xCE,
(byte) 0x06, (byte) 0x18, (byte) 0x4E, (byte) 0xEB, (byte) 0x78, (byte) 0x95, (byte) 0xDB, (byte) 0xBA,
(byte) 0xB6, (byte) 0x42, (byte) 0x7A, (byte) 0x2A, (byte) 0x83, (byte) 0x0B, (byte) 0x54, (byte) 0x67,
(byte) 0x6D, (byte) 0xE8, (byte) 0x65, (byte) 0xE7, (byte) 0x2F, (byte) 0x07, (byte) 0xF3, (byte) 0xAA,
(byte) 0x27, (byte) 0x7B, (byte) 0x85, (byte) 0xB0, (byte) 0x26, (byte) 0xFD, (byte) 0x8B, (byte) 0xA9,
(byte) 0xFA, (byte) 0xBE, (byte) 0xA8, (byte) 0xD7, (byte) 0xCB, (byte) 0xCC, (byte) 0x92, (byte) 0xDA,
(byte) 0xF9, (byte) 0x93, (byte) 0x60, (byte) 0x2D, (byte) 0xDD, (byte) 0xD2, (byte) 0xA2, (byte) 0x9B,
(byte) 0x39, (byte) 0x5F, (byte) 0x82, (byte) 0x21, (byte) 0x4C, (byte) 0x69, (byte) 0xF8, (byte) 0x31,
(byte) 0x87, (byte) 0xEE, (byte) 0x8E, (byte) 0xAD, (byte) 0x8C, (byte) 0x6A, (byte) 0xBC, (byte) 0xB5,
(byte) 0x6B, (byte) 0x59, (byte) 0x13, (byte) 0xF1, (byte) 0x04, (byte) 0x00, (byte) 0xF6, (byte) 0x5A,
(byte) 0x35, (byte) 0x79, (byte) 0x48, (byte) 0x8F, (byte) 0x15, (byte) 0xCD, (byte) 0x97, (byte) 0x57,
(byte) 0x12, (byte) 0x3E, (byte) 0x37, (byte) 0xFF, (byte) 0x9D, (byte) 0x4F, (byte) 0x51, (byte) 0xF5,
(byte) 0xA3, (byte) 0x70, (byte) 0xBB, (byte) 0x14, (byte) 0x75, (byte) 0xC2, (byte) 0xB8, (byte) 0x72,
(byte) 0xC0, (byte) 0xED, (byte) 0x7D, (byte) 0x68, (byte) 0xC9, (byte) 0x2E, (byte) 0x0D, (byte) 0x62,
(byte) 0x46, (byte) 0x17, (byte) 0x11, (byte) 0x4D, (byte) 0x6C, (byte) 0xC4, (byte) 0x7E, (byte) 0x53,
(byte) 0xC1, (byte) 0x25, (byte) 0xC7, (byte) 0x9A, (byte) 0x1C, (byte) 0x88, (byte) 0x58, (byte) 0x2C,
(byte) 0x89, (byte) 0xDC, (byte) 0x02, (byte) 0x64, (byte) 0x40, (byte) 0x01, (byte) 0x5D, (byte) 0x38,
(byte) 0xA5, (byte) 0xE2, (byte) 0xAF, (byte) 0x55, (byte) 0xD5, (byte) 0xEF, (byte) 0x1A, (byte) 0x7C,
(byte) 0xA7, (byte) 0x5B, (byte) 0xA6, (byte) 0x6F, (byte) 0x86, (byte) 0x9F, (byte) 0x73, (byte) 0xE6,
(byte) 0x0A, (byte) 0xDE, (byte) 0x2B, (byte) 0x99, (byte) 0x4A, (byte) 0x47, (byte) 0x9C, (byte) 0xDF,
(byte) 0x09, (byte) 0x76, (byte) 0x9E, (byte) 0x30, (byte) 0x0E, (byte) 0xE4, (byte) 0xB2, (byte) 0x94,
(byte) 0xA0, (byte) 0x3B, (byte) 0x34, (byte) 0x1D, (byte) 0x28, (byte) 0x0F, (byte) 0x36, (byte) 0xE3,
(byte) 0x23, (byte) 0xB4, (byte) 0x03, (byte) 0xD8, (byte) 0x90, (byte) 0xC8, (byte) 0x3C, (byte) 0xFE,
(byte) 0x5E, (byte) 0x32, (byte) 0x24, (byte) 0x50, (byte) 0x1F, (byte) 0x3A, (byte) 0x43, (byte) 0x8A,
(byte) 0x96, (byte) 0x41, (byte) 0x74, (byte) 0xAC, (byte) 0x52, (byte) 0x33, (byte) 0xF0, (byte) 0xD9,
(byte) 0x29, (byte) 0x80, (byte) 0xB1, (byte) 0x16, (byte) 0xD3, (byte) 0xAB, (byte) 0x91, (byte) 0xB9,
(byte) 0x84, (byte) 0x7F, (byte) 0x61, (byte) 0x1E, (byte) 0xCF, (byte) 0xC5, (byte) 0xD1, (byte) 0x56,
(byte) 0x3D, (byte) 0xCA, (byte) 0xF4, (byte) 0x05, (byte) 0xC6, (byte) 0xE5, (byte) 0x08, (byte) 0x49};
private final short mapleVersion;
private final Cipher cipher;
private byte[] iv;
public MapleAESOFB(InitializationVector iv, short mapleVersion) {
try {
cipher = Cipher.getInstance("AES");
cipher.init(Cipher.ENCRYPT_MODE, skey);
} catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException e) {
log.warn("Cypher initialization error with skey: {}", skey, e);
throw new RuntimeException(e);
}
this.iv = iv.getBytes();
this.mapleVersion = (short) (((mapleVersion >> 8) & 0xFF) | ((mapleVersion << 8) & 0xFF00));
}
private static byte[] multiplyBytes(byte[] in, int count, int mul) {
final int size = count * mul;
byte[] ret = new byte[size];
for (int x = 0; x < size; x++) {
ret[x] = in[x % count];
}
return ret;
}
public synchronized byte[] crypt(byte[] data) {
int remaining = data.length;
int llength = 0x5B0;
int start = 0;
while (remaining > 0) {
byte[] myIv = multiplyBytes(this.iv, 4, 4);
if (remaining < llength) {
llength = remaining;
}
for (int x = start; x < (start + llength); x++) {
if ((x - start) % myIv.length == 0) {
try {
byte[] newIv = cipher.doFinal(myIv);
System.arraycopy(newIv, 0, myIv, 0, myIv.length);
} catch (IllegalBlockSizeException | BadPaddingException e) {
e.printStackTrace();
}
}
data[x] ^= myIv[(x - start) % myIv.length];
}
start += llength;
remaining -= llength;
llength = 0x5B4;
}
updateIv();
return data;
}
private synchronized void updateIv() {
this.iv = getNewIv(this.iv);
}
public byte[] getPacketHeader(int length) {
int iiv = (iv[3]) & 0xFF;
iiv |= (iv[2] << 8) & 0xFF00;
iiv ^= mapleVersion;
int mlength = ((length << 8) & 0xFF00) | (length >>> 8);
int xoredIv = iiv ^ mlength;
byte[] ret = new byte[4];
ret[0] = (byte) ((iiv >>> 8) & 0xFF);
ret[1] = (byte) (iiv & 0xFF);
ret[2] = (byte) ((xoredIv >>> 8) & 0xFF);
ret[3] = (byte) (xoredIv & 0xFF);
return ret;
}
public static int getPacketLength(int packetHeader) {
int packetLength = ((packetHeader >>> 16) ^ (packetHeader & 0xFFFF));
packetLength = ((packetLength << 8) & 0xFF00) | ((packetLength >>> 8) & 0xFF);
return packetLength;
}
private boolean checkPacket(byte[] packet) {
return ((((packet[0] ^ iv[2]) & 0xFF) == ((mapleVersion >> 8) & 0xFF)) &&
(((packet[1] ^ iv[3]) & 0xFF) == (mapleVersion & 0xFF)));
}
public boolean isValidHeader(int packetHeader) {
byte[] packetHeaderBuf = new byte[2];
packetHeaderBuf[0] = (byte) ((packetHeader >> 24) & 0xFF);
packetHeaderBuf[1] = (byte) ((packetHeader >> 16) & 0xFF);
return checkPacket(packetHeaderBuf);
}
public static byte[] getNewIv(byte[] oldIv) {
byte[] in = {(byte) 0xf2, 0x53, (byte) 0x50, (byte) 0xc6};
for (int x = 0; x < 4; x++) {
funnyShit(oldIv[x], in);
}
return in;
}
@Override
public String toString() {
return "IV: " + HexTool.toString(this.iv);
}
private static byte[] funnyShit(byte inputByte, byte[] in) {
byte elina = in[1];
byte anna = inputByte;
byte moritz = funnyBytes[(int) elina & 0xFF];
moritz -= inputByte;
in[0] += moritz;
moritz = in[2];
moritz ^= funnyBytes[(int) anna & 0xFF];
elina -= (int) moritz & 0xFF;
in[1] = elina;
elina = in[3];
moritz = elina;
elina -= (int) in[0] & 0xFF;
moritz = funnyBytes[(int) moritz & 0xFF];
moritz += inputByte;
moritz ^= in[2];
in[2] = moritz;
elina += (int) funnyBytes[(int) anna & 0xFF] & 0xFF;
in[3] = elina;
int merry = ((int) in[0]) & 0xFF;
merry |= (in[1] << 8) & 0xFF00;
merry |= (in[2] << 16) & 0xFF0000;
merry |= (in[3] << 24) & 0xFF000000;
int ret_value = merry;
ret_value = ret_value >>> 0x1d;
merry = merry << 3;
ret_value = ret_value | merry;
in[0] = (byte) (ret_value & 0xFF);
in[1] = (byte) ((ret_value >> 8) & 0xFF);
in[2] = (byte) ((ret_value >> 16) & 0xFF);
in[3] = (byte) ((ret_value >> 24) & 0xFF);
return in;
}
}

2
src/main/java/net/netty/PacketCodec.java → src/main/java/net/encryption/PacketCodec.java
View File

@@ -1,4 +1,4 @@
package net.netty;
package net.encryption;
import io.netty.channel.CombinedChannelDuplexHandler;

4
src/main/java/net/netty/PacketDecoder.java → src/main/java/net/encryption/PacketDecoder.java
View File

@@ -1,12 +1,12 @@
package net.netty;
package net.encryption;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.ReplayingDecoder;
import net.MapleCustomEncryption;
import net.netty.InvalidPacketHeaderException;
import net.packet.ByteBufInPacket;
import tools.MapleAESOFB;
import java.util.List;

3
src/main/java/net/netty/PacketEncoder.java → src/main/java/net/encryption/PacketEncoder.java
View File

@@ -1,11 +1,10 @@
package net.netty;
package net.encryption;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToByteEncoder;
import net.MapleCustomEncryption;
import net.packet.OutPacket;
import tools.MapleAESOFB;
public class PacketEncoder extends MessageToByteEncoder<OutPacket> {
private final MapleAESOFB sendCypher;

3
src/main/java/net/netty/ServerChannelInitializer.java
View File

@@ -9,6 +9,9 @@ import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.socket.SocketChannel;
import io.netty.handler.timeout.IdleStateHandler;
import net.encryption.ClientCyphers;
import net.encryption.InitializationVector;
import net.encryption.PacketCodec;
import net.packet.logging.InPacketLogger;
import net.packet.logging.OutPacketLogger;
import tools.MaplePacketCreator;

72
src/main/java/net/packet/logging/MapleLogger.java Normal file
View File

@@ -0,0 +1,72 @@
/*
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 net.packet.logging;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import net.opcodes.RecvOpcode;
import client.MapleCharacter;
import client.MapleClient;
import tools.FilePrinter;
import tools.HexTool;
/**
* Logs packets to console and file.
*
* @author Alan (SharpAceX)
*/
public class MapleLogger {
public static final Set<Integer> monitored = new HashSet<>();
public static final Set<Integer> ignored = new HashSet<>();
public static void logRecv(MapleClient c, short packetId, byte[] packetContent) {
MapleCharacter chr = c.getPlayer();
if (chr == null) {
return;
}
if (!monitored.contains(chr.getId())) {
return;
}
RecvOpcode op = getOpcodeFromValue(packetId);
if (isRecvBlocked(op)) {
return;
}
String packet = op + "\r\n" + HexTool.toString(packetContent);
FilePrinter.printError(FilePrinter.PACKET_LOGS + c.getAccountName() + "-" + chr.getName() + ".txt", packet);
}
private static boolean isRecvBlocked(RecvOpcode op) {
return switch (op) {
case MOVE_PLAYER, GENERAL_CHAT, TAKE_DAMAGE, MOVE_PET, MOVE_LIFE, NPC_ACTION, FACE_EXPRESSION -> true;
default -> false;
};
}
private static RecvOpcode getOpcodeFromValue(int value) {
return Arrays.stream(RecvOpcode.values())
.filter(opcode -> value == opcode.getValue())
.findAny()
.orElse(null);
}
}