public static void RegisterClient(Client client)
{
Logger.DebugFormat("RegisterConnection: {0}", client.ConnectionId);
ConnectedClients[client.ConnectionId] = client;
if (client.ServerType == ServerTypes.World)
WorldClients[client.ConnectionId] = client;
}
private void PacketHandler_0x02_CreateA(Client client, ClientPacket packet)
{
var name = packet.ReadString8();
var password = packet.ReadString8();
var email = packet.ReadString8();
// This string will contain a client-ready message if the provided password
// isn't valid.
byte passwordErr = 0x0;
if (Game.World.PlayerExists(name))
{
client.LoginMessage("That name is unavailable.", 3);
}
else if (name.Length < 4 || name.Length > 12)
{
client.LoginMessage("Names must be between 4 to 12 characters long.", 3);
}
else if (!ValidPassword(password, out passwordErr))
{
client.LoginMessage(GetPasswordError(passwordErr), 3);
}
else if (Regex.IsMatch(name, "^[A-Za-z]{4,12}$"))
{
client.NewCharacterName = name;
client.NewCharacterPassword = HashPassword(password);
client.LoginMessage("\0", 0);
}
else
{
client.LoginMessage("Names may only contain letters.", 3);
}
}
public virtual void AcceptConnection()
{
if (TcpListener.Pending())
{
var socket = TcpListener.AcceptSocket();
var client = new Client(socket, this);
client.Begin();
}
}
public static void DeregisterClient(Client client)
{
((IDictionary)ConnectedClients).Remove(client.ConnectionId);
// Send a control message to clean up after World users; Lobby and Login handle themselves
if (client.ServerType == ServerTypes.World)
{
((IDictionary)WorldClients).Remove(client.ConnectionId);
// This will also handle removing the user from WorldClients if necessary
World.MessageQueue.Add(new HybrasylControlMessage(ControlOpcodes.CleanupUser, client.ConnectionId));
}
}
private void PacketHandler_0x4B_RequestNotification(Client client, ClientPacket packet)
{
var x60 = new ServerPacket(0x60);
x60.WriteByte(0x01);
x60.WriteUInt16((ushort)Game.Notification.Length);
x60.Write(Game.Notification);
client.Enqueue(x60);
}
// Chart for all error password-related error codes were provided by kojasou@ on
// https://github.com/hybrasyl/server/pull/11.
private void PacketHandler_0x26_ChangePassword(Client client, ClientPacket packet)
{
var name = packet.ReadString8();
var currentPass = packet.ReadString8();
// Clientside validation ensures that the same string is typed twice for the new
// password, and the new password is only sent to the server once. We can assume
// that they matched if 0x26 request is sent from the client.
var newPass = packet.ReadString8();
// TODO: REDIS
IDatabase cache = World.DatastoreConnection.GetDatabase();
var myPerson = cache.Get(name);
if (myPerson == null)
{
client.LoginMessage(GetPasswordError(0x0E), 0x0E);
Logger.DebugFormat("Password change attempt on invalid player `{0}`", name);
}
var player = JsonConvert.DeserializeObject(myPerson as String) as User;
if (player.VerifyPassword(currentPass))
{
// Check if the password is valid.
byte err = 0x00;
if (ValidPassword(newPass, out err))
{
player.Password.Hash = HashPassword(newPass);
player.Password.LastChanged = DateTime.Now;
player.Password.LastChangedFrom = ((IPEndPoint) client.Socket.RemoteEndPoint).Address.ToString();
player.Save();
// Let the user know the good news.
client.LoginMessage("Your password has been changed successfully.", 0x0);
Logger.InfoFormat("Password successfully changed for `{0}`", name);
}
else
{
client.LoginMessage(GetPasswordError(err), err);
Logger.ErrorFormat("Invalid new password proposed during password change attempt for `{0}`", name);
}
}
// The current password is incorrect. Don't allow any changes to happen.
else
{
client.LoginMessage(GetPasswordError(0x0F), 0x0F);
Logger.ErrorFormat("Invalid current password during password change attempt for `{0}`", name);
}
}
private void PacketHandler_0x10_ClientJoin(Client client, ClientPacket packet)
{
var seed = packet.ReadByte();
var keyLength = packet.ReadByte();
var key = packet.Read(keyLength);
var name = packet.ReadString8();
var id = packet.ReadUInt32();
var redirect = ExpectedConnections[id];
if (redirect.Matches(name, key, seed))
{
((IDictionary)ExpectedConnections).Remove(id);
client.EncryptionKey = key;
client.EncryptionSeed = seed;
if (redirect.Source is Lobby)
{
var x60 = new ServerPacket(0x60);
x60.WriteByte(0x00);
x60.WriteUInt32(Game.NotificationCrc);
client.Enqueue(x60);
}
}
}
private void PacketHandler_0x04_CreateB(Client client, ClientPacket packet)
{
if (string.IsNullOrEmpty(client.NewCharacterName) || string.IsNullOrEmpty(client.NewCharacterPassword))
return;
var hairStyle = packet.ReadByte();
var sex = packet.ReadByte();
var hairColor = packet.ReadByte();
if (hairStyle < 1)
hairStyle = 1;
if (hairStyle > 17)
hairStyle = 17;
if (hairColor > 13)
hairColor = 13;
if (sex < 1)
sex = 1;
if (sex > 2)
sex = 2;
if (!Game.World.PlayerExists(client.NewCharacterName))
{
var newPlayer = new User();
newPlayer.Name = client.NewCharacterName;
newPlayer.Sex = (Sex) sex;
newPlayer.Location.Direction = Direction.South;
newPlayer.Location.MapId = 136;
newPlayer.Location.X = 10;
newPlayer.Location.Y = 10;
newPlayer.HairColor = hairColor;
newPlayer.HairStyle = hairStyle;
newPlayer.Class = Class.Peasant;
newPlayer.Level = 1;
newPlayer.Experience = 1;
newPlayer.Level = 1;
newPlayer.Experience = 0;
newPlayer.AbilityExp = 0;
newPlayer.Gold = 0;
newPlayer.Ability = 0;
newPlayer.Hp = 50;
newPlayer.Mp = 50;
newPlayer.BaseHp = 50;
newPlayer.BaseMp = 50;
newPlayer.BaseStr = 3;
newPlayer.BaseInt = 3;
newPlayer.BaseWis = 3;
newPlayer.BaseCon = 3;
newPlayer.BaseDex = 3;
newPlayer.Login.CreatedTime = DateTime.Now;
newPlayer.Password.Hash = client.NewCharacterPassword;
newPlayer.Password.LastChanged = DateTime.Now;
newPlayer.Password.LastChangedFrom = ((IPEndPoint) client.Socket.RemoteEndPoint).Address.ToString();
IDatabase cache = World.DatastoreConnection.GetDatabase();
var myPerson = JsonConvert.SerializeObject(newPlayer);
cache.Set(String.Format("{0}:{1}", User.DatastorePrefix, newPlayer.Name), myPerson);
// Logger.ErrorFormat("Error saving new player!");
// Logger.ErrorFormat(e.ToString());
// client.LoginMessage("Unknown error. Contact [email protected]", 3);
// }
client.LoginMessage("\0", 0);
}
}
private void PacketHandler_0x03_Login(Client client, ClientPacket packet)
{
var name = packet.ReadString8();
var password = packet.ReadString8();
Logger.DebugFormat("cid {0}: Login request for {1}", client.ConnectionId, name);
User loginUser;
if (!World.TryGetUser(name, out loginUser))
{
client.LoginMessage("That character does not exist", 3);
Logger.InfoFormat("cid {0}: attempt to login as nonexistent character {1}", client.ConnectionId, name);
}
else if (loginUser.VerifyPassword(password))
{
Logger.DebugFormat("cid {0}: password verified for {1}", client.ConnectionId, name);
if (Game.World.ActiveUsersByName.ContainsKey(name))
{
Logger.InfoFormat("cid {0}: {1} logging on again, disconnecting previous connection",
client.ConnectionId, name);
World.MessageQueue.Add(new HybrasylControlMessage(ControlOpcodes.LogoffUser, name));
}
Logger.DebugFormat("cid {0} ({1}): logging in", client.ConnectionId, name);
client.LoginMessage("\0", 0);
client.SendMessage("Welcome to Hybrasyl!", 3);
Logger.DebugFormat("cid {0} ({1}): sending redirect to world", client.ConnectionId, name);
var redirect = new Redirect(client, this, Game.World, name, client.EncryptionSeed,
client.EncryptionKey);
Logger.InfoFormat("cid {0} ({1}): login successful, redirecting to world server",
client.ConnectionId, name);
client.Redirect(redirect);
loginUser.Login.LastLogin = DateTime.Now;
loginUser.Login.LastLoginFrom = ((IPEndPoint) client.Socket.RemoteEndPoint).Address.ToString();
loginUser.Save();
}
else
{
Logger.WarnFormat("cid {0} ({1}): password incorrect", client.ConnectionId, name);
client.LoginMessage("Incorrect password", 3);
loginUser.Login.LastLoginFailure = DateTime.Now;
loginUser.Login.LoginFailureCount++;
loginUser.Save();
}
}
private void ProcessSlashCommands(Client client, ClientPacket packet)
{
}
public void Encrypt(Client client)
{
var length = Data.Length - 3;
var rand = new Random();
var bRand = (ushort)(rand.Next() % 65277 + 256);
var sRand = (byte)(rand.Next() % 155 + 100);
var key = (UseDefaultKey) ? client.EncryptionKey : client.GenerateKey(bRand, sRand);
for (var i = 0; i < length; i++)
{
Data[i] ^= key[i % key.Length];
Data[i] ^= SaltTable[client.EncryptionSeed][(i / key.Length) % SaltTable[client.EncryptionSeed].Length];
if ((i / key.Length) % SaltTable[client.EncryptionSeed].Length != Ordinal)
{
Data[i] ^= SaltTable[client.EncryptionSeed][Ordinal];
}
}
Data[length] = (byte)(bRand % 256 ^ 0x74);
Data[length + 1] = (byte)(sRand ^ 0x24);
Data[length + 2] = (byte)((bRand >> 8) % 256 ^ 0x64);
}
// Chart for all error password-related error codes were provided by kojasou@ on
// https://github.com/hybrasyl/server/pull/11.
private void PacketHandler_0x26_ChangePassword(Client client, ClientPacket packet)
{
var name = packet.ReadString8();
var currentPass = packet.ReadString8();
// Clientside validation ensures that the same string is typed twice for the new
// password, and the new password is only sent to the server once. We can assume
// that they matched if 0x26 request is sent from the client.
var newPass = packet.ReadString8();
using (var ctx = new hybrasylEntities(Constants.ConnectionString))
{
var player = ctx.players.Where(p => p.name == name).SingleOrDefault();
// Check that `name` exists. If not, return a message indicating that to the user.
if (player == null)
{
client.LoginMessage(GetPasswordError(0x0E), 0x0E);
Logger.DebugFormat("Password change attempt on invalid player `{0}`", name);
}
// If the player does exist, validate the current and new passwords before updating.
else
{
// Check that the current password is correct and the new password is different
// than the current password.
if (VerifyPassword(currentPass, player))
{
// Check if the password is valid.
byte err = 0x00;
if (ValidPassword(newPass, out err))
{
player.password_hash = HashPassword(newPass);
ctx.SaveChanges();
// Let the user know the good news.
client.LoginMessage("Your password has been changed successfully.", 0x0);
Logger.InfoFormat("Password successfully changed for `{0}`", name);
}
else
{
client.LoginMessage(GetPasswordError(err), err);
Logger.ErrorFormat("Invalid new password proposed during password change attempt for `{0}`", name);
}
}
// The current password is incorrect. Don't allow any changes to happen.
else
{
client.LoginMessage(GetPasswordError(0x0F), 0x0F);
Logger.ErrorFormat("Invalid current password during password change attempt for `{0}`", name);
}
}
}
}
private void PacketHandler_0x04_CreateB(Client client, ClientPacket packet)
{
if (string.IsNullOrEmpty(client.NewCharacterName) || string.IsNullOrEmpty(client.NewCharacterPassword))
return;
var hairStyle = packet.ReadByte();
var sex = packet.ReadByte();
var hairColor = packet.ReadByte();
if (hairStyle < 1)
hairStyle = 1;
if (hairStyle > 17)
hairStyle = 17;
if (hairColor > 13)
hairColor = 13;
if (sex < 1)
sex = 1;
if (sex > 2)
sex = 2;
if (!Game.World.PlayerExists(client.NewCharacterName))
{
using (var ctx = new hybrasylEntities(Constants.ConnectionString))
{
player newplayer = new player
{
name = client.NewCharacterName,
password_hash = client.NewCharacterPassword,
sex = (Sex) sex,
hairstyle = hairStyle,
haircolor = hairColor,
map_id = 136,
map_x = 10,
map_y = 10,
direction = 1,
class_type = 0,
level = 1,
exp = 0,
ab = 0,
gold = 0,
ab_exp = 0,
max_hp = 50,
max_mp = 50,
cur_hp = 50,
cur_mp = 35,
str = 3,
@int = 3,
wis = 3,
con = 3,
dex = 3,
inventory = "[]",
equipment = "[]",
created_at = DateTime.Now
};
try
{
ctx.players.Add(newplayer);
ctx.SaveChanges();
}
catch (Exception e)
{
Logger.ErrorFormat("Error saving new player!");
Logger.ErrorFormat(e.ToString());
client.LoginMessage("Unknown error. Contact [email protected]", 3);
}
client.LoginMessage("\0", 0);
}
}
}
private void PacketHandler_0x03_Login(Client client, ClientPacket packet)
{
var name = packet.ReadString8();
var password = packet.ReadString8();
Logger.DebugFormat("cid {0}: Login request for {1}", client.ConnectionId, name);
using (var ctx = new hybrasylEntities(Constants.ConnectionString))
{
var result = ctx.players.Where(player => player.name == name).SingleOrDefault();
if (result == null)
{
client.LoginMessage("That character does not exist", 3);
Logger.InfoFormat("cid {0}: attempt to login as nonexistent character {1}", client.ConnectionId, name);
}
else
{
if (VerifyPassword(password, result))
{
Logger.DebugFormat("cid {0}: password verified for {1}", client.ConnectionId, name);
if (Game.World.ActiveUsersByName.ContainsKey(name))
{
Logger.InfoFormat("cid {0}: {1} logging on again, disconnecting previous connection",
client.ConnectionId, name);
World.MessageQueue.Add(new HybrasylControlMessage(ControlOpcodes.LogoffUser, name));
}
Logger.DebugFormat("cid {0} ({1}): logging in", client.ConnectionId, name);
client.LoginMessage("\0", 0);
client.SendMessage("Welcome to Hybrasyl!", 3);
Logger.DebugFormat("cid {0} ({1}): sending redirect to world", client.ConnectionId, name);
var redirect = new Redirect(client, this, Game.World, name, client.EncryptionSeed,
client.EncryptionKey);
Logger.InfoFormat("cid {0} ({1}): login successful, redirecting to world server",
client.ConnectionId, name);
client.Redirect(redirect);
}
else
{
Logger.WarnFormat("cid {0} ({1}): password incorrect", client.ConnectionId, name);
client.LoginMessage("Incorrect password", 3);
}
}
}
}
private void PacketHandler_0x68_RequestHomepage(Client client, ClientPacket packet)
{
var x03 = new ServerPacket(0x66);
x03.WriteByte(0x03);
x03.WriteString8("http://www.hybrasyl.com");
client.Enqueue(x03);
}
public Redirect(Client client, Server source, Server destination, string name, byte seed, byte[] key)
{
Id = id++;
Client = client;
Source = source;
Destination = destination;
Name = name;
EncryptionSeed = seed;
EncryptionKey = key;
}
public void Decrypt(Client client)
{
var length = Data.Length - 3;
var bRand = (ushort)((Data[length + 2] << 8 | Data[length]) ^ 0x7470);
var sRand = (byte)(Data[length + 1] ^ 0x23);
var key = (UseDefaultKey) ? client.EncryptionKey : client.GenerateKey(bRand, sRand);
for (var i = 0; i < length; i++)
{
Data[i] ^= key[i % key.Length];
Data[i] ^= SaltTable[client.EncryptionSeed][(i / key.Length) % SaltTable[client.EncryptionSeed].Length];
if ((i / key.Length) % SaltTable[client.EncryptionSeed].Length != Ordinal)
{
Data[i] ^= SaltTable[client.EncryptionSeed][Ordinal];
}
}
}