// Negotiate a new player client login. This function runs in a new goroutine // for each player connection and therefore should not attempt to alter the // game structure without enqueue(). func (game *Game) login(conn net.Conn) { // TODO: This function should access game in a thread-safe way for reading var err, clientErr os.Error defer func() { if err != nil { log.Print(err.String()) if clientErr == nil { clientErr = os.NewError("Server error.") } proto.WriteDisconnect(conn, clientErr.String()) conn.Close() } }() var username string if username, err = proto.ServerReadHandshake(conn); err != nil { clientErr = os.NewError("Handshake error.") return } if !validPlayerUsername.MatchString(username) { err = os.NewError("Bad username") clientErr = err return } log.Print("Client ", conn.RemoteAddr(), " connected as ", username) if game.UnderMaintenanceMsg != "" { err = fmt.Errorf("Server under maintenance, kicking player: %q", username) clientErr = os.NewError(game.UnderMaintenanceMsg) return } // Load player permissions. permissions := gamerules.Permissions.UserPermissions(username) if !permissions.Has("login") { err = fmt.Errorf("Player %q does not have login permission", username) clientErr = os.NewError("You do not have access to this server.") return } if err = proto.ServerWriteHandshake(conn, game.serverId); err != nil { clientErr = os.NewError("Handshake error.") return } if game.serverId != "-" { var authenticated bool authserver := &server_auth.ServerAuth{"http://www.minecraft.net/game/checkserver.jsp"} authenticated, err = authserver.Authenticate(game.serverId, username) if !authenticated || err != nil { var reason string if err != nil { reason = "Authentication check failed: " + err.String() } else { reason = "Failed authentication" } err = fmt.Errorf("Client %v: %s", conn.RemoteAddr(), reason) clientErr = os.NewError(reason) return } log.Print("Client ", conn.RemoteAddr(), " passed minecraft.net authentication") } if _, err = proto.ServerReadLogin(conn); err != nil { clientErr = os.NewError("Login error.") return } entityId := game.entityManager.NewEntity() var playerData nbt.ITag if playerData, err = game.worldStore.PlayerData(username); err != nil { clientErr = os.NewError("Error reading user data. Please contact the server administrator.") return } player := player.NewPlayer(entityId, game.shardManager, conn, username, game.worldStore.SpawnPosition, game.playerDisconnect, game) if playerData != nil { if err = player.ReadNbt(playerData); err != nil { // Don't let the player log in, as they will only have default inventory // etc., which could lose items from them. Better for an administrator to // sort this out. err = fmt.Errorf("Error parsing player data for %q: %v", username, err) clientErr = os.NewError("Error reading user data. Please contact the server administrator.") return } } game.playerConnect <- player player.Start() }
func (l *pktHandler) handleLogin(pktHandshake *proto.PacketHandshake) (err, clientErr error) { pversion := int(pktHandshake.ProtocolVersion) if l.gameInfo.protocolVersion > pversion { err = loginErrVersionHigh clientErr = err } if l.gameInfo.protocolVersion < pversion { err = loginErrVersionLow clientErr = err } username := pktHandshake.Username if !validPlayerUsername.MatchString(username) { err = clientErrUsername clientErr = err return } log.Print("Client ", l.conn.RemoteAddr(), " connected as ", username) //@TODO Allow admins to connect. if l.gameInfo.maintenanceMsg != "" { err = loginErrorMaintenance clientErr = errors.New(l.gameInfo.maintenanceMsg) return } // Load player permissions. permissions := gamerules.Permissions.UserPermissions(username) if !permissions.Has("login") { err = fmt.Errorf("Player %q does not have login permission", username) clientErr = clientErrLoginDenied return } sessionId := fmt.Sprintf("%016x", rand.Int63()) log.Printf("Player %q has sessionId %s", username, sessionId) // @ISSUE #4 // authenticated, err := l.gameInfo.authserver.Authenticate(sessionId, username) // if !authenticated || err != nil { // var reason string // if err != nil { // reason = "Authentication check failed: " + err.Error() // } else { // reason = "Failed authentication" // } // err = fmt.Errorf("Client %v: %s", l.conn.RemoteAddr(), reason) // clientErr = clientErrAuthFailed // return // } // log.Print("Client ", l.conn.RemoteAddr(), " passed minecraft.net authentication") entityId := l.gameInfo.entityManager.NewEntity() var playerData nbt.Compound if playerData, err = l.gameInfo.game.worldStore.PlayerData(username); err != nil { clientErr = clientErrUserData return } player := player.NewPlayer(entityId, l.gameInfo.shardManager, l.conn, username, l.gameInfo.worldStore.SpawnPosition, l.gameInfo.game.playerDisconnect, l.gameInfo.game) if playerData != nil { if err = player.UnmarshalNbt(playerData); err != nil { // Don't let the player log in, as they will only have default inventory // etc., which could lose items from them. Better for an administrator to // sort this out. err = fmt.Errorf("Error parsing player data for %q: %v", username, err) clientErr = clientErrUserData return } } l.gameInfo.game.playerConnect <- player player.Run() return }
func (l *pktHandler) handleLogin(conn net.Conn) (err, clientErr error) { if !validPlayerUsername.MatchString(l.username) { err = clientErrUsername clientErr = err return } log.Print("Client ", conn.RemoteAddr(), " connected as ", l.username) // TODO Allow admins to connect. if l.gameInfo.maintenanceMsg != "" { err = loginErrorMaintenance clientErr = errors.New(l.gameInfo.maintenanceMsg) return } // Load player permissions. permissions := gamerules.Permissions.UserPermissions(l.username) if !permissions.Has("login") { err = fmt.Errorf("Player %q does not have login permission", l.username) clientErr = clientErrLoginDenied return } if err = proto.ServerWriteHandshake(conn, l.gameInfo.serverId); err != nil { clientErr = clientErrHandshake return } if l.gameInfo.serverId != "-" { var authenticated bool authenticated, err = l.gameInfo.authserver.Authenticate(l.gameInfo.serverId, l.username) if !authenticated || err != nil { var reason string if err != nil { reason = "Authentication check failed: " + err.Error() } else { reason = "Failed authentication" } err = fmt.Errorf("Client %v: %s", conn.RemoteAddr(), reason) clientErr = clientErrAuthFailed return } log.Print("Client ", conn.RemoteAddr(), " passed minecraft.net authentication") } err = proto.ServerReadPacketExpect(conn, l, []byte{ proto.PacketIdLogin, }) if err != nil { clientErr = clientErrLoginGeneral return } entityId := l.gameInfo.entityManager.NewEntity() var playerData *nbt.Compound if playerData, err = l.gameInfo.game.worldStore.PlayerData(l.username); err != nil { clientErr = clientErrUserData return } player := player.NewPlayer(entityId, l.gameInfo.shardManager, conn, l.username, l.gameInfo.worldStore.SpawnPosition, l.gameInfo.game.playerDisconnect, l.gameInfo.game) if playerData != nil { if err = player.UnmarshalNbt(playerData); err != nil { // Don't let the player log in, as they will only have default inventory // etc., which could lose items from them. Better for an administrator to // sort this out. err = fmt.Errorf("Error parsing player data for %q: %v", l.username, err) clientErr = clientErrUserData return } } l.gameInfo.game.playerConnect <- player player.Run() return }