Merge remote-tracking branch 'gitlab/master'

- Switch bitfield decoder from shift-based to mask-based extraction (var>>pos & mask)
  fixes non-power-of-2 bitfields like 6-bit command_node flags
- Fix MultiTypeFix to handle CaseExprTypeOnlyNumber/OnlyBool variants
- Update minecraft-data command_node bitfield order for all 1.21.8+ versions
  to LSB-first convention (matches reverse encoder/decoder)
- Implement SwitchDecoder for extraNodeData via compareTo visitor
- DeclareCommands now decodes successfully (was EOF)
- Add 6 regression tests (entity_equipment, metadata, recipes, commands)

.gitea/workflows/go.yml

@@ -0,0 +1,28 @@
+name: Go
+
+on:
+  push:
+    branches: ["master"]
+  pull_request:
+    branches: ["master"]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: "1.26.2"
+
+      - name: Build
+        run: go build -v ./...
+
+      - name: Vet
+        run: go vet -v ./...
+
+      - name: Test
+        run: go test -v ./...

.github/workflows/go.yml

@@ -0,0 +1,35 @@
+# This workflow will build a golang project
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-go
+
+name: Go
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout with LFS
+      uses: actions/checkout@v4
+      with:
+        lfs: true
+
+
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '1.26.2'
+
+    - name: Build
+      run: go build -v ./...
+
+    - name: Vet
+      run: go vet -v ./...
+
+    - name: Test
+      run: go test -v ./...

.gitignore

@@ -1,4 +1,5 @@
 .devres/
 .idea/
 .failed_packets/
-tools/.*/
+.vscode/proto_generator
+proto_generator

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "data/minecraft-data"]
-	path = data/minecraft-data
-	url = git@github.com:PrismarineJS/minecraft-data.git

README.md

@@ -0,0 +1,5 @@
+# STROM
+
+# THIS IS WORK IN PROGRESS AND THE API WILL BREAK AS LONG AS THE THE PACKAGE VERSION IS v0.x.x
+
+feel free to contact me on [discord](https://discord.gg/n2Vjc2vcMf)

client/client.go

@@ -1,40 +0,0 @@
-package client
-
-import (
-	"net"
-
-	"github.com/admin-else/strom/proto"
-	"github.com/admin-else/strom/proto_base"
-)
-
-// Connect connects to the given address note that it does not resolve the SRV records it's just a raw net.Dial
-// You must close the connection when you're done with it
-func Connect(addr string) (ret *proto.Conn, err error) {
-	s, err := Status(addr)
-	if err != nil {
-		return
-	}
-	ret, err = ConnectVersionLess(addr)
-	if err != nil {
-		return
-	}
-	err = ret.SetProtocolVersion(s.Version.Protocol)
-	return
-}
-
-// ConnectVersionLess connects to the given address without setting the version you should set it
-// when using this function.
-// You must close the connection when you're done with it
-func ConnectVersionLess(addr string) (ret *proto.Conn, err error) {
-	ret = &proto.Conn{}
-	ret.SetState(proto_base.Handshaking)
-	ret.SetCompressionThreshold(-1)
-	ret.Actor = proto_base.Client
-	ret.Conn, err = net.Dial("tcp", addr)
-	if err != nil {
-		return
-	}
-	ret.R = ret.Conn
-	ret.W = ret.Conn
-	return
-}

client/dns.go

@@ -1,126 +0,0 @@
-package client
-
-import (
-	"context"
-	"errors"
-	"net"
-	"strconv"
-	"strings"
-	"time"
-)
-
-type DNSCheckFunc func(addr string) error
-
-// DoDns resolves a DNS name to an IP address
-// It should resolve a minecraft compatible address into something net.Dial
-func DoDns(in string) (out string, host string, portN uint16, err error) {
-	return DoDNSChecked(in, nil)
-}
-
-// DoDNSChecked resolves a DNS name to an IP address
-// It should resolve a minecraft compatible address into something net.Dial
-// It also optionally accepts a function to "check" the address
-func DoDNSChecked(in string, f DNSCheckFunc) (connectTo string, host string, portN uint16, err error) {
-	// https://mcsrc.dev/1/26.1-pre-1/net/minecraft/client/multiplayer/resolver/ServerAddress#L34
-	host, port, err := net.SplitHostPort(in)
-	if err != nil {
-		var addrErr *net.AddrError
-		if errors.As(err, &addrErr) && addrErr.Err == "missing port in address" {
-			err = nil
-			host = in
-			port = "25565"
-		} else {
-			return
-		}
-	}
-	porti, err := strconv.Atoi(port)
-	if err != nil {
-		return
-	}
-	if f == nil {
-		f = func(addr string) error { return nil }
-	}
-
-	err = f(host)
-	if err != nil {
-		return
-	}
-	portN = uint16(porti)
-	outIP, err := net.ResolveIPAddr("ip", host)
-	if err != nil {
-		return
-	}
-	err = f(outIP.String())
-	if err != nil {
-		return
-	}
-	connectTo = outIP.String() + ":" + port
-	if portN != 25565 {
-		return
-	}
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second) // otherwise this takes 10+ seconds
-	defer cancel()
-
-	r := &net.Resolver{}
-
-	_, srvs, _ := r.LookupSRV(ctx, "minecraft", "tcp", host)
-	if len(srvs) == 0 {
-
-		return
-	}
-	host = strings.TrimSuffix(srvs[0].Target, ".")
-	portN = srvs[0].Port
-	outIP, err = net.ResolveIPAddr("ip", host)
-	if err != nil {
-		return
-	}
-	err = f(outIP.String())
-	if err != nil {
-		return
-	}
-	connectTo = outIP.String() + ":" + port
-	return
-}
-
-// DoDnsSimple resolves a DNS name to an IP address
-// It should resolve a minecraft compatible address into something net.Dial
-// It does not check the address
-func DoDnsSimple(in string) (out string, err error) {
-	host, port, err := net.SplitHostPort(in)
-	if err != nil {
-		var addrErr *net.AddrError
-		if errors.As(err, &addrErr) && addrErr.Err == "missing port in address" {
-			err = nil
-			host = in
-			port = "25565"
-		} else {
-			return
-		}
-	}
-	porti, err := strconv.Atoi(port)
-	if err != nil {
-		return
-	}
-	portN := uint16(porti)
-	_, err = net.ResolveIPAddr("ip", host)
-	if err != nil {
-		return
-	}
-	out = in
-	if portN != 25565 {
-		return
-	}
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second) // otherwise this takes 10+ seconds
-	defer cancel()
-
-	r := &net.Resolver{}
-
-	_, srvs, _ := r.LookupSRV(ctx, "minecraft", "tcp", host)
-	if len(srvs) == 0 {
-		return
-	}
-	host = strings.TrimSuffix(srvs[0].Target, ".")
-	portN = srvs[0].Port
-	out = host + ":" + strconv.Itoa(int(portN))
-	return
-}

client/login.go

@@ -1,172 +0,0 @@
-package client
-
-import (
-	"crypto/rand"
-	"crypto/rsa"
-	"crypto/x509"
-	"encoding/json"
-	"errors"
-	"fmt"
-
-	"github.com/admin-else/strom/api"
-	"github.com/admin-else/strom/crypto"
-	"github.com/admin-else/strom/event"
-	"github.com/admin-else/strom/proto"
-	"github.com/admin-else/strom/proto_base"
-	"github.com/admin-else/strom/text"
-
-	"github.com/admin-else/strom/proto_generated/v1_21_8"
-)
-
-type LoginClient struct {
-	*proto.Conn
-	Account    *api.Account
-	ServerHost string
-	ServerPort uint16
-
-	GivenAccount *v1_21_8.LoginToClientPacketSuccess
-}
-
-var (
-	NoTokenErr          = errors.New("the account has no token so we cant join online servers")
-	BadPublicKeyTypeErr = errors.New("the public key is not rsa")
-	FailedToLoginErr    = errors.New("failed to login")
-)
-
-type KickedDuringLoginErr struct {
-	text.Component
-}
-
-func (k KickedDuringLoginErr) Error() string {
-	return k.String()
-}
-
-func (s *LoginClient) OnDefault(event event.Unhandled) (err error) {
-	err = fmt.Errorf("unexpected event: %#v", event)
-	return
-}
-
-func (s *LoginClient) OnCycle(_ event.Tick) (err error) {
-	return
-}
-
-func (s *LoginClient) OnClose(_ event.Close) (err error) {
-	return
-}
-
-func (s *LoginClient) OnCompress(compress *v1_21_8.LoginToClientPacketCompress) (err error) {
-	s.SetCompressionThreshold(compress.Threshold)
-	return
-}
-
-func (s *LoginClient) OnEncrypt(packet *v1_21_8.LoginToClientPacketEncryptionBegin) (err error) {
-	sharedSecret := make([]byte, 16)
-	_, _ = rand.Read(sharedSecret) //never fails
-
-	if packet.ShouldAuthenticate {
-		if s.Account.Ygg == "" {
-			err = NoTokenErr
-			return
-		}
-		serverId := crypto.AuthDigest([]byte(packet.ServerId), sharedSecret, packet.PublicKey)
-		err = s.Account.JoinServer(serverId)
-		if err != nil {
-			return
-		}
-	}
-
-	pubAny, err := x509.ParsePKIXPublicKey(packet.PublicKey)
-	if err != nil {
-		return
-	}
-	pub, ok := pubAny.(*rsa.PublicKey)
-	if !ok {
-		err = BadPublicKeyTypeErr
-		return
-	}
-	verifyTokenEnc, err := rsa.EncryptPKCS1v15(rand.Reader, pub, packet.VerifyToken)
-	if err != nil {
-		return
-	}
-
-	sharedSecretEnc, err := rsa.EncryptPKCS1v15(rand.Reader, pub, sharedSecret)
-	if err != nil {
-		return
-	}
-	err = s.Send(&v1_21_8.LoginToServerPacketEncryptionBegin{SharedSecret: sharedSecretEnc, VerifyToken: verifyTokenEnc})
-	if err != nil {
-		return
-	}
-	err = s.SetSecret(sharedSecret)
-	return
-
-}
-
-func (s *LoginClient) OnDisconnect(packet *v1_21_8.LoginToClientPacketDisconnect) (err error) {
-	var reason text.Component
-	err = json.Unmarshal([]byte(packet.Reason), &reason)
-	if err != nil {
-		return
-	}
-	err = KickedDuringLoginErr{reason}
-	return
-}
-
-func (s *LoginClient) OnSuccess(success *v1_21_8.LoginToClientPacketSuccess) (err error) {
-	s.GivenAccount = success
-	err = s.Send(&v1_21_8.LoginToServerPacketLoginAcknowledged{})
-	if err != nil {
-		return
-	}
-	s.SetState(proto_base.Configuration)
-	err = event.HandlerDoneErr{}
-	return
-}
-
-func (s *LoginClient) OnStart() (err error) {
-	return
-}
-
-func Login(c *proto.Conn, account *api.Account) (err error) {
-	lc := &LoginClient{
-		Conn:    c,
-		Account: account,
-	}
-	lc.RegisterCritical(lc.OnDefault)
-	lc.RegisterCritical(lc.OnCycle)
-	lc.RegisterCritical(lc.OnClose)
-	lc.RegisterUntilLatest(lc.OnCompress)
-	lc.RegisterUntilLatest(lc.OnEncrypt)
-	lc.RegisterUntilLatest(lc.OnDisconnect)
-	lc.RegisterUntilLatest(lc.OnSuccess)
-
-	p, err := MakeHandshakePacket(lc.Conn, proto_base.Login)
-	if err != nil {
-		return
-	}
-
-	err = lc.Send(p)
-	if err != nil {
-		return
-	}
-	lc.SetState(proto_base.Login)
-	err = lc.Send(&v1_21_8.LoginToServerPacketLoginStart{Username: lc.Account.Name, PlayerUUID: lc.Account.Uuid})
-
-	err = lc.Start()
-	if err != nil {
-		err = errors.Join(FailedToLoginErr, err)
-	}
-	return
-}
-
-func ConnectAndLogin(connectTo string, account *api.Account) (c *proto.Conn, err error) {
-	c, err = Connect(connectTo)
-	if err != nil {
-		return
-	}
-	err = Login(c, account)
-	if err != nil {
-		err = errors.Join(FailedToLoginErr, err)
-	}
-	return
-}

client/status.go

@@ -1,84 +0,0 @@
-package client
-
-import (
-	"encoding/json"
-	"time"
-
-	"github.com/admin-else/strom/event"
-	"github.com/admin-else/strom/proto"
-	"github.com/admin-else/strom/proto_base"
-	"github.com/admin-else/strom/server"
-
-	"github.com/admin-else/strom/proto_generated/v1_21_8"
-)
-
-type StatusClient struct {
-	*proto.Conn
-	Status                        string
-	PingSendTime, PingReceiveTime time.Time
-	DoPingRoundTripTime           bool
-}
-
-func (s *StatusClient) OnStart() (err error) {
-	return
-}
-
-func (s *StatusClient) OnStatus(p *v1_21_8.StatusToClientPacketServerInfo) (err error) {
-	s.Status = p.Response
-	s.PingSendTime = time.Now()
-	if s.DoPingRoundTripTime {
-		err = s.Send(&v1_21_8.StatusToServerPacketPing{Time: s.PingSendTime.UnixMilli()})
-	} else {
-		err = event.HandlerDoneErr{}
-	}
-	return
-}
-
-func (s *StatusClient) OnPong(p *v1_21_8.StatusToClientPacketPing) (err error) {
-	s.PingReceiveTime = time.Now()
-	err = event.HandlerDoneErr{}
-	return
-}
-
-// StatusRaw returns a StatusClient that is not connected to a server.
-// So ignore the resource leak warning. And maybe attach a warn ignore comment
-func StatusRaw(addr string) (s *StatusClient, err error) {
-	c, err := ConnectVersionLess(addr)
-	if err != nil {
-		return
-	}
-	defer c.Close()
-	err = c.SetVersion("1.21.8")
-	if err != nil {
-		return
-	}
-	s = &StatusClient{
-		Conn: c,
-	}
-	s.Loop = event.NewLoop()
-	s.RegisterUntilLatest(s.OnStatus)
-	s.RegisterUntilLatest(s.OnPong)
-
-	p, err := MakeHandshakePacketAddr(s.Conn, proto_base.Status, addr)
-	if err != nil {
-		return
-	}
-	err = s.Send(p)
-	if err != nil {
-		return
-	}
-	s.SetState(proto_base.Status)
-	err = s.Send(&v1_21_8.StatusToServerPacketPingStart{})
-
-	err = s.StartConn()
-	return
-}
-
-func Status(addr string) (status server.StatusResponse, err error) {
-	s, err := StatusRaw(addr)
-	if err != nil {
-		return
-	}
-	err = json.Unmarshal([]byte(s.Status), &status)
-	return
-}

cmd/strom/api/main.go

@@ -0,0 +1,61 @@
+package api
+
+import (
+	"encoding/json"
+	"errors"
+	"flag"
+	"log/slog"
+	"os"
+
+	"git.anygate.cloud/anygatecloud/strom/mc/api"
+)
+
+var cmd = flag.NewFlagSet("api", flag.ContinueOnError)
+var tokenFlag = cmd.String("token", os.Getenv("MC_TOKEN"), "token to use")
+
+var renameFlag = cmd.String("rename", "", "rename the player")
+
+var uuidFlag = cmd.String("uuid", "", "get data about player with uuid")
+var nameFlag = cmd.String("name", "", "get data about player with name")
+var unsignedFlag = cmd.Bool("unsigned", true, "use unsigned mode for properties signatures")
+
+var PleaseProvideArgumentErr = errors.New("please provide an argument")
+
+func Run(args []string) (err error) {
+	err = cmd.Parse(args)
+	if err != nil {
+		return
+	}
+	a := &api.Account{}
+	if *tokenFlag != "" {
+		a, err = api.NewAccountFromYGG(*tokenFlag)
+		if err != nil {
+			return
+		}
+	}
+	var data any
+	if *renameFlag != "" {
+		data, err = a.ChangeName(*renameFlag)
+		if err != nil {
+			return
+		}
+	} else if *uuidFlag != "" || *nameFlag != "" {
+		if *nameFlag != "" {
+			var idName api.IdName
+			idName, err = api.NameToId(*nameFlag)
+			if err != nil {
+				return
+			}
+			*uuidFlag = idName.Id
+		}
+		data, err = api.Profile(*uuidFlag, *unsignedFlag)
+		if err != nil {
+			return
+		}
+	} else {
+		slog.Info("account", "name", a.Name, "uuid", a.Uuid)
+		return
+	}
+	err = json.NewEncoder(os.Stdout).Encode(data)
+	return
+}

cmd/strom/cmd_util/account.go

@@ -0,0 +1,11 @@
+package cmd_util
+
+import "git.anygate.cloud/anygatecloud/strom/mc/api"
+
+func Account(s string) (a *api.Account, err error) {
+	if len(s) > 16 {
+		return api.NewAccountFromYGG(s)
+	}
+	a = api.NewOfflineAccount(s)
+	return
+}

cmd/strom/data/main.go

@@ -0,0 +1,118 @@
+package data
+
+import (
+	"encoding/json"
+	"fmt"
+	"maps"
+	"os"
+	"slices"
+
+	mcdata "git.anygate.cloud/anygatecloud/strom/mc/data"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated"
+	"git.anygate.cloud/anygatecloud/strom/mc/util"
+)
+
+// strom data 1.21.11 blocks id 0 name => air
+//   {
+//    "id": 0,
+//    "name": "air",
+//    "displayName": "Air",
+//    "hardness": 0.0,
+//    "resistance": 0.0,
+//    "stackSize": 64,
+//    "diggable": false,
+//    "material": "default",
+//    "transparent": true,
+//    "emitLight": 0,
+//    "filterLight": 0,
+//    "defaultState": 0,
+//    "minStateId": 0,
+//    "maxStateId": 0,
+//    "states": [],
+//    "drops": [],
+//    "boundingBox": "empty"
+//  },
+
+func Run(args []string) (err error) {
+	var dataValues any
+	switch len(args) {
+	case 0: // print available versions
+		dataValues = proto_generated.SupportedVersions
+	case 1: // print available data for version
+		dataValues = slices.Collect(maps.Keys(mcdata.Paths.Data[args[0]]))
+	case 2:
+		err = mcdata.LoadVersionedJson(args[0], args[1], &dataValues)
+	case 3:
+		err = mcdata.LoadVersionedJson(args[0], args[1], &dataValues)
+		if err != nil {
+			return
+		}
+		var dataSlices []any
+		dataSlices, err = util.AssertTypeError[[]any](dataValues)
+		if err != nil {
+			return
+		}
+		var result = make([]any, len(dataSlices))
+		for _, v := range dataSlices {
+			var dataMap map[string]any
+			dataMap, err = util.AssertTypeError[map[string]any](v)
+			if err != nil {
+				return
+			}
+			var vToAppend any
+			vToAppend, err = util.MapGetError(dataMap, args[2])
+			if err != nil {
+				return
+			}
+			result = append(result, vToAppend)
+		}
+		dataValues = result
+	case 4, 5:
+		err = mcdata.LoadVersionedJson(args[0], args[1], &dataValues)
+		if err != nil {
+			return
+		}
+		var dataSlices []any
+		dataSlices, err = util.AssertTypeError[[]any](dataValues)
+		if err != nil {
+			return
+		}
+		found := false
+		for _, v := range dataSlices {
+			var dataMap map[string]any
+			dataMap, err = util.AssertTypeError[map[string]any](v)
+			if err != nil {
+				return
+			}
+			if v2, ok := dataMap[args[2]]; ok {
+				if args[3] != fmt.Sprint(v2) {
+					continue
+				}
+
+				dataValues = dataMap
+				found = true
+				if len(args) == 5 {
+					dataValues, err = util.MapGetError(dataMap, args[4])
+					if err != nil {
+						return
+					}
+				}
+				break
+			}
+		}
+		if !found {
+			err = fmt.Errorf("not found")
+			return
+		}
+	default:
+		err = fmt.Errorf("too many arguments")
+	}
+
+	if err == nil {
+		e := json.NewEncoder(os.Stdout)
+		e.SetIndent("", "  ")
+		err = e.Encode(dataValues)
+		return
+	}
+	return
+}

cmd/strom/extract_mca/main.go

@@ -0,0 +1,52 @@
+package extract_mca
+
+import (
+	"flag"
+	"fmt"
+	"log/slog"
+	"os"
+
+	"git.anygate.cloud/anygatecloud/strom/mc/level/anvil"
+	"git.anygate.cloud/anygatecloud/strom/mc/nbt"
+)
+
+var (
+	cmd        = flag.NewFlagSet("print-nbt", flag.ContinueOnError)
+	FileFlag   = cmd.String("file", "", "The MCA file to extract")
+	IndexXFlag = cmd.Int("x", 0, "The x chunk coordinate")
+	IndexZFlag = cmd.Int("z", 0, "The z chunk coordinate")
+	ToFlag     = cmd.String("to", "mca-chunk.nbt", "The output file")
+)
+
+func Run(args []string) (err error) {
+	err = cmd.Parse(args)
+	if err != nil {
+		return
+	}
+	if *FileFlag == "" {
+		return fmt.Errorf("no file specified")
+	}
+	f, err := os.Open(*FileFlag)
+	if err != nil {
+		return
+	}
+	defer f.Close()
+	mca, err := anvil.ReadChunkHeader(f)
+	if err != nil {
+		return
+	}
+	t, err := mca.TimeAt(f, int32(*IndexXFlag), int32(*IndexZFlag))
+	if err != nil {
+		return
+	}
+	slog.Info("Chunk last written", "time", t)
+	n, err := mca.ChunkAt(f, int32(*IndexXFlag), int32(*IndexZFlag))
+	if err != nil {
+		return
+	}
+	err = nbt.WriteUnstructuredFilePath(*ToFlag, n)
+	if err != nil {
+		return
+	}
+	return
+}

cmd/strom/main.go

@@ -0,0 +1,103 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"log/slog"
+	"maps"
+	"os"
+	"runtime/debug"
+	"slices"
+
+	"git.anygate.cloud/anygatecloud/strom/cmd/strom/api"
+	"git.anygate.cloud/anygatecloud/strom/cmd/strom/data"
+	"git.anygate.cloud/anygatecloud/strom/cmd/strom/extract_mca"
+	"git.anygate.cloud/anygatecloud/strom/cmd/strom/mca_to_tmcpr"
+	"git.anygate.cloud/anygatecloud/strom/cmd/strom/messenger"
+	"git.anygate.cloud/anygatecloud/strom/cmd/strom/offline_uuid"
+	"git.anygate.cloud/anygatecloud/strom/cmd/strom/packet_info"
+	"git.anygate.cloud/anygatecloud/strom/cmd/strom/packet_inspector"
+	"git.anygate.cloud/anygatecloud/strom/cmd/strom/print_nbt"
+	"git.anygate.cloud/anygatecloud/strom/cmd/strom/print_replay"
+	// "git.anygate.cloud/anygatecloud/strom/cmd/strom/raw_capture" // removed: use tcpflow instead for raw TCP capture
+	"git.anygate.cloud/anygatecloud/strom/cmd/strom/raw_to_tmcpr"
+	"git.anygate.cloud/anygatecloud/strom/cmd/strom/serve_tmcpr"
+	"git.anygate.cloud/anygatecloud/strom/cmd/strom/serve_world"
+	"git.anygate.cloud/anygatecloud/strom/cmd/strom/status"
+)
+
+var ExpectedASubcommandErr = errors.New("expected a subcommand")
+var UnknownSubcommandErr = errors.New("unknown subcommand try 'strom help' for a list of subcommands")
+
+func ToolVersion() string {
+	info, ok := debug.ReadBuildInfo()
+	if !ok {
+		return "devel"
+	}
+	return info.Main.Version
+}
+
+func ToolSum() string {
+	info, ok := debug.ReadBuildInfo()
+	if !ok {
+		return ""
+	}
+	return info.Main.Sum
+}
+
+func Version(args []string) error {
+	fmt.Println("strom cli ", ToolVersion(), " (", ToolSum(), ")")
+	return nil
+}
+
+var subcommands = map[string]func(args []string) error{
+	"offline-uuid":         offline_uuid.Run,
+	"packet-info":          packet_info.Run,
+	"print-nbt":            print_nbt.Run,
+	"status":               status.Run,
+	"packet-spy":           packet_inspector.Run,
+	"api":                  api.Run,
+	"version":              Version,
+	"extract-mca":          extract_mca.Run,
+	"data":                 data.Run,
+	"print-replay":         print_replay.Run,
+	// "raw-capture":          raw_capture.Run, // removed: use tcpflow instead for raw TCP capture, then raw-to-tmcpr
+	"raw-to-tmcpr":         raw_to_tmcpr.Run,
+	"serve-world":          serve_world.Run,
+	"mca-to-tmcpr":         mca_to_tmcpr.Run,
+	"serve-tmcpr":          serve_tmcpr.Run,
+	"messenger":            messenger.Run,
+}
+
+func Help(args []string) (err error) {
+	subcommandNames := slices.Collect(maps.Keys(subcommands))
+	slices.Sort(subcommandNames)
+	fmt.Println("Available subcommands", subcommandNames)
+	return
+}
+
+func mainE() (err error) {
+	subcommands["help"] = Help
+	args := os.Args
+	//args = []string{"TEST", "messenger", "-addr", "localhost"}
+
+	if len(args) < 2 {
+		err = ExpectedASubcommandErr
+		return
+	}
+
+	f, ok := subcommands[args[1]]
+	if !ok {
+		err = UnknownSubcommandErr
+		return
+	}
+	err = f(args[2:])
+	return
+}
+
+func main() {
+	err := mainE()
+	if err != nil {
+		slog.Error("exiting", "err", err)
+	}
+}

cmd/strom/mca_to_tmcpr/main.go

@@ -0,0 +1,212 @@
+package mca_to_tmcpr
+
+import (
+	"bytes"
+	"flag"
+	"fmt"
+	"log/slog"
+	"os"
+	"path/filepath"
+
+	"git.anygate.cloud/anygatecloud/strom/mc/level"
+	"git.anygate.cloud/anygatecloud/strom/mc/level/anvil"
+	"git.anygate.cloud/anygatecloud/strom/mc/nbt"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto/replay"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_21_11"
+	"git.anygate.cloud/anygatecloud/strom/mc/util"
+)
+
+var (
+	cmd       = flag.NewFlagSet("mca-to-tmcpr", flag.ContinueOnError)
+	worldPath = cmd.String("world", "", "Path to world directory")
+	output    = cmd.String("output", "", "Output .tmcpr file path")
+	radius    = cmd.Int("radius", 14, "Chunk radius around spawn")
+	spawnX    = cmd.Float64("spawn-x", 0.5, "Spawn X coordinate")
+	spawnY    = cmd.Float64("spawn-y", 100, "Spawn Y coordinate")
+	spawnZ    = cmd.Float64("spawn-z", 0.5, "Spawn Z coordinate")
+)
+
+var FullLight [][]uint8
+
+func init() {
+	light := make([]uint8, 2048)
+	for i := range light {
+		light[i] = 0xFF
+	}
+	sectionsPerChunk := 384 / 16
+	FullLight = make([][]uint8, sectionsPerChunk)
+	for i := range sectionsPerChunk {
+		FullLight[i] = light
+	}
+}
+
+func GetChunkFromMca(x, z int32, version string) (b []byte, err error) {
+	xmca := util.FloorDiv(x, anvil.ChunksWidthRegionFile)
+	zmca := util.FloorDiv(z, anvil.ChunksWidthRegionFile)
+	x = x % anvil.ChunksWidthRegionFile
+	if x < 0 {
+		x += anvil.ChunksWidthRegionFile
+	}
+	z = z % anvil.ChunksWidthRegionFile
+	if z < 0 {
+		z += anvil.ChunksWidthRegionFile
+	}
+
+	f, err := os.Open(filepath.Join(*worldPath, "region", fmt.Sprintf("r.%v.%v.mca", xmca, zmca)))
+	if err != nil {
+		return
+	}
+	defer f.Close()
+	mca, err := anvil.ReadChunkHeader(f)
+	if err != nil {
+		return
+	}
+
+	var n *nbt.Tag
+	n, err = mca.ChunkAt(f, x, z)
+	if err != nil {
+		return
+	}
+	if n == nil {
+		return
+	}
+
+	var chunk anvil.Chunk
+	err = nbt.Format.Decode(n.Value, &chunk)
+	if err != nil {
+		return
+	}
+
+	var packetChunk *level.Chunk
+	packetChunk, err = chunk.ToStorage(version)
+	if err != nil {
+		return
+	}
+	buffer := bytes.NewBuffer(nil)
+	err = packetChunk.WriteChunkData(buffer)
+	if err != nil {
+		return
+	}
+	b = buffer.Bytes()
+	return
+}
+
+func Run(args []string) error {
+	slog.SetLogLoggerLevel(slog.LevelDebug)
+
+	err := cmd.Parse(args)
+	if err != nil {
+		return err
+	}
+	if *worldPath == "" {
+		slog.Error("no world path specified")
+		return nil
+	}
+	if *output == "" {
+		slog.Error("no output path specified")
+		return nil
+	}
+
+	outFile, err := os.Create(*output)
+	if err != nil {
+		slog.Error("failed to create output file", "error", err)
+		return err
+	}
+	defer outFile.Close()
+
+	w := replay.NewWriter(outFile)
+
+	err = w.WritePacket(&v1_21_11.PlayToClientPacketLogin{
+		EntityId:            73,
+		IsHardcore:          false,
+		WorldNames:          []string{"minecraft:overworld", "minecraft:the_end", "minecraft:the_nether"},
+		MaxPlayers:          100,
+		ViewDistance:        10,
+		SimulationDistance:  10,
+		ReducedDebugInfo:    false,
+		EnableRespawnScreen: true,
+		DoLimitedCrafting:   false,
+		WorldState: v1_21_11.PlayToClientSpawnInfo{
+			Dimension:        0,
+			Name:             "minecraft:overworld",
+			HashedSeed:       -8365436745629239539,
+			Gamemode:         "survival",
+			PreviousGamemode: 0xff,
+			IsDebug:          false,
+			IsFlat:           false,
+			Death:            nil,
+			PortalCooldown:   0,
+			SeaLevel:         63,
+		},
+		EnforcesSecureChat: false,
+	}, 0)
+	if err != nil {
+		slog.Error("failed to write login packet", "error", err)
+		return err
+	}
+
+	err = w.WritePacket(&v1_21_11.PlayToClientPacketPosition{
+		TeleportId: 0,
+		X:          *spawnX,
+		Y:          *spawnY,
+		Z:          *spawnZ,
+		Dx:         0,
+		Dy:         0,
+		Dz:         0,
+		Yaw:        0,
+		Pitch:      0,
+		Flags:      v1_21_11.PlayToClientPositionUpdateRelatives{},
+	}, 0)
+	if err != nil {
+		slog.Error("failed to write position packet", "error", err)
+		return err
+	}
+
+	chunkX := int32(*spawnX) >> 4
+	chunkZ := int32(*spawnZ) >> 4
+
+	err = w.WritePacket(&v1_21_11.PlayToClientPacketUpdateViewPosition{
+		ChunkX: chunkX,
+		ChunkZ: chunkZ,
+	}, 0)
+	if err != nil {
+		slog.Error("failed to write view position packet", "error", err)
+		return err
+	}
+
+	err = w.WritePacket(&v1_21_11.PlayToClientPacketGameStateChange{
+		Reason: "level_chunks_load_start",
+	}, 0)
+	if err != nil {
+		slog.Error("failed to write game state packet", "error", err)
+		return err
+	}
+
+	radius32 := int32(*radius)
+
+	for x := -radius32; x < radius32; x++ {
+		for z := -radius32; z < radius32; z++ {
+			var chunkData []byte
+			chunkData, err = GetChunkFromMca(x, z, "1.21.11")
+			if err != nil {
+				return err
+			}
+			if chunkData == nil {
+				continue
+			}
+			OLDpacket := &v1_21_11.PlayToClientPacketMapChunk{}
+			OLDpacket.X = x
+			OLDpacket.Z = z
+			OLDpacket.ChunkData = v1_21_11.ByteArray{Val: chunkData}
+			OLDpacket.BlockLight = FullLight
+			OLDpacket.BlockLightMask = []int64{(1 << 24) - 1}
+			err = w.WritePacket(OLDpacket, 0)
+			if err != nil {
+				return err
+			}
+		}
+	}
+
+	slog.Info("conversion complete", "output", *output)
+	return nil
+}

cmd/strom/messenger/main.go

@@ -0,0 +1,164 @@
+package messenger
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+
+	"git.anygate.cloud/anygatecloud/strom/cmd/strom/cmd_util"
+	"git.anygate.cloud/anygatecloud/strom/mc/bot/chat"
+	"git.anygate.cloud/anygatecloud/strom/mc/bot/keepalive"
+	"git.anygate.cloud/anygatecloud/strom/mc/bot/world"
+	"git.anygate.cloud/anygatecloud/strom/mc/client"
+	"git.anygate.cloud/anygatecloud/strom/mc/data"
+	"git.anygate.cloud/anygatecloud/strom/mc/event"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_21_11"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_8"
+)
+
+func stror(a, b string) string {
+	if a != "" {
+		return a
+	}
+	return b
+}
+
+var (
+	cmd           = flag.NewFlagSet("status", flag.ContinueOnError)
+	connectToFlag = cmd.String("addr", "", "server address to connect to")
+	accFlag       = cmd.String("acc", stror(os.Getenv("STROM_ACC"), "strom_messenger"), "the name to use if longer will be treated as ygg token")
+	versionFlag   = cmd.String("version", "26.2", "minecraft version to use (e.g. 1.8, 1.21.11)")
+)
+
+type Messenger struct {
+	*proto.Conn
+	chat   *chat.Module
+	world  *world.Module
+	legacy bool
+}
+
+func (m *Messenger) OnChat(e *v1_21_11.PlayToClientPacketPlayerChat) (err error) {
+	m.Log.Info("chat", "author", e.SenderUuid, "m", e.PlainMessage)
+	return
+}
+
+func (m *Messenger) OnChatUnsigned(e *v1_21_11.PlayToClientPacketProfilelessChat) (err error) {
+	m.Log.Info("chatP", "author", e.Name, "m", e.Message)
+	return
+}
+
+func (m *Messenger) OnChatSystem(e *v1_21_11.PlayToClientPacketSystemChat) (err error) {
+	m.Log.Info("chatS", "m", e.Content)
+	return
+}
+
+func (m *Messenger) OnChatLegacy(e *v1_8.PlayToClientPacketChat) (err error) {
+	m.Log.Info("chat", "m", e.Message)
+	return
+}
+
+func (m *Messenger) OnStdin(e event.Stdin) (err error) {
+	input := strings.TrimSpace(e.Val)
+	if strings.HasPrefix(input, ">say ") {
+		return m.sendChat(strings.TrimSpace(strings.TrimPrefix(input, ">say")))
+	}
+	if !m.legacy && strings.HasPrefix(input, ">getblock ") {
+		return m.handleGetBlock(strings.TrimSpace(strings.TrimPrefix(input, ">getblock")))
+	}
+	return m.sendChat(input)
+}
+
+func (m *Messenger) sendChat(message string) (err error) {
+	if m.legacy {
+		return m.Send(&v1_8.PlayToServerPacketChat{Message: message})
+	}
+	return m.chat.SendMessage(message)
+}
+
+func (m *Messenger) handleGetBlock(args string) (err error) {
+	fields := strings.Fields(args)
+	if len(fields) != 3 {
+		m.Log.Info("getblock", "error", "expected >getblock <x> <y> <z>")
+		return nil
+	}
+
+	coords := make([]int64, 3)
+	for i, f := range fields {
+		coords[i], err = strconv.ParseInt(f, 10, 32)
+		if err != nil {
+			m.Log.Info("getblock", "error", fmt.Sprintf("bad coordinate %q", f))
+			return nil
+		}
+	}
+
+	stateId, err := m.world.GetBlock(int32(coords[0]), int32(coords[1]), int32(coords[2]))
+	if err != nil {
+		m.Log.Info("getblock", "error", err.Error())
+		return nil
+	}
+
+	block, ok := data.LookupBlockByStateId(m.Version, stateId)
+	if !ok {
+		m.Log.Info("getblock", "stateId", stateId, "name", "unknown")
+		return nil
+	}
+
+	m.Log.Info("getblock", "x", coords[0], "y", coords[1], "z", coords[2], "name", block.Name, "stateId", stateId)
+	return nil
+}
+
+func Run(args []string) (err error) {
+	err = cmd.Parse(args)
+	if err != nil {
+		return
+	}
+
+	acc, err := cmd_util.Account(*accFlag)
+	if err != nil {
+		return
+	}
+	c, err := client.Login(*connectToFlag, acc, client.WithVersion(*versionFlag))
+	if err != nil {
+		return
+	}
+	defer c.Close()
+
+	isLegacy := c.ProtocolVersion < 764
+
+	var chatMod *chat.Module
+	if !isLegacy {
+		chatMod, err = chat.Start(c, acc)
+		if err != nil {
+			return
+		}
+	}
+
+	m := &Messenger{
+		Conn:   c,
+		chat:   chatMod,
+		legacy: isLegacy,
+	}
+
+	if !isLegacy {
+		w := world.NewWorld(c.Version, -64, 384)
+		m.world = world.Start(c, w)
+	}
+
+	event.StartListingStdin(m.Loop)
+	m.Register(m.OnStdin)
+
+	if isLegacy {
+		m.Register(m.OnChatLegacy)
+	} else {
+		m.RegisterUntilLatest(m.OnChat, m.OnChatUnsigned, m.OnChatSystem)
+	}
+
+	if !isLegacy {
+		keepalive.Start(m.Conn)
+	}
+
+	return m.StartConn()
+}

cmd/strom/offline_uuid/offline_uuid.go

@@ -4,7 +4,7 @@ import (
 	"flag"
 	"fmt"
 
-	"github.com/admin-else/strom/crypto"
+	"git.anygate.cloud/anygatecloud/strom/mc/crypto"
 )
 
 var cmd = flag.NewFlagSet("offline-uuid", flag.ContinueOnError)

cmd/strom/packet_info/main.go

@@ -0,0 +1,169 @@
+package packet_info
+
+import (
+	"flag"
+	"fmt"
+	"strconv"
+
+	"git.anygate.cloud/anygatecloud/strom/mc/data"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_base"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated"
+)
+
+var cmd = flag.NewFlagSet("packet-info", flag.ContinueOnError)
+var versionFlag = cmd.String("version", "", "protocol version or minecraft version name")
+var stateFlag = cmd.String("state", "", "handshaking, status, login, configuration, play")
+var directionFlag = cmd.String("direction", "", "toserver, toclient")
+var idFlag = cmd.Int("id", -1, "packet id")
+var nameFlag = cmd.String("name", "", "packet name")
+
+func Run(args []string) (err error) {
+	err = cmd.Parse(args)
+	if err != nil {
+		return
+	}
+
+	var version int32
+	if *versionFlag != "" {
+		v, err := data.LookUpVersionByName(*versionFlag)
+		if err != nil {
+			v2, err := parseVersion(*versionFlag)
+			if err != nil {
+				return fmt.Errorf("invalid version: %s", *versionFlag)
+			}
+			v, err = data.LookUpVersionByProtocolVersion(v2)
+			if err != nil {
+				return err
+			}
+		}
+		version = v.Version
+	}
+
+	var state proto_base.State
+	if *stateFlag != "" {
+		state, err = parseState(*stateFlag)
+		if err != nil {
+			return
+		}
+	}
+
+	var direction proto_base.Direction
+	if *directionFlag != "" {
+		direction, err = parseDirection(*directionFlag)
+		if err != nil {
+			return
+		}
+	}
+
+	if *idFlag != -1 && *nameFlag != "" {
+		err = fmt.Errorf("cannot specify both id and name")
+		return
+	}
+
+	if *idFlag != -1 {
+		if *versionFlag == "" || *stateFlag == "" || *directionFlag == "" {
+			err = fmt.Errorf("version, state, and direction are required when looking up by id")
+			return
+		}
+		p, ok := proto.LookUpTypeByPacketInfo(direction, state, int32(*idFlag), version)
+		if !ok {
+			err = fmt.Errorf("packet not found")
+			return
+		}
+		printPacketInfo(p)
+		return
+	}
+
+	if *nameFlag != "" {
+		if *versionFlag == "" {
+			err = fmt.Errorf("version is required when looking up by name")
+			return
+		}
+		if state != 0 || direction != 0 {
+			p, ok := proto.LookupPacketInfoByNameProtocolVersionStateAndDirection(*nameFlag, version, state, direction)
+			if !ok {
+				err = fmt.Errorf("packet not found")
+				return
+			}
+			printPacketInfo(p)
+		} else {
+			var found bool
+			for _, p := range proto_generated.Packets {
+				if p.Name == *nameFlag && p.ProtocolVersion == version {
+					printPacketInfo(p)
+					found = true
+				}
+			}
+			if !found {
+				err = fmt.Errorf("packet not found")
+			}
+		}
+		return
+	}
+
+	err = fmt.Errorf("must specify either -id or -name")
+	return
+}
+
+func parseState(s string) (proto_base.State, error) {
+	switch s {
+	case "handshaking":
+		return proto_base.Handshaking, nil
+	case "status":
+		return proto_base.Status, nil
+	case "login":
+		return proto_base.Login, nil
+	case "configuration":
+		return proto_base.Configuration, nil
+	case "play":
+		return proto_base.Play, nil
+	default:
+		return 0, fmt.Errorf("unknown state: %s", s)
+	}
+}
+
+func parseDirection(s string) (proto_base.Direction, error) {
+	switch s {
+	case "toserver":
+		return proto_base.ToServer, nil
+	case "toclient":
+		return proto_base.ToClient, nil
+	default:
+		return 0, fmt.Errorf("unknown direction: %s", s)
+	}
+}
+
+func parseVersion(val string) (int32, error) {
+	v, err := strconv.ParseInt(val, 10, 32)
+	if err != nil {
+		return 0, err
+	}
+	return int32(v), nil
+}
+
+func printPacketInfo(p proto_base.PacketInfo) {
+	v, _ := data.LookUpVersionByProtocolVersion(p.ProtocolVersion)
+	fmt.Printf("Name:       %s\n", p.Name)
+	fmt.Printf("ID:         %d\n", p.PacketId)
+	fmt.Printf("State:      %s\n", stateToString(p.State))
+	fmt.Printf("Direction:  %s\n", p.Direction)
+	fmt.Printf("Version:    %d (%s)\n", p.ProtocolVersion, v.MinecraftVersion)
+}
+
+func stateToString(s proto_base.State) string {
+	switch s {
+	case proto_base.Handshaking:
+		return "handshaking"
+	case proto_base.Status:
+		return "status"
+	case proto_base.Login:
+		return "login"
+	case proto_base.Configuration:
+		return "configuration"
+	case proto_base.Play:
+		return "play"
+	default:
+		return "unknown"
+	}
+}

cmd/strom/packet_inspector/main.go

@@ -0,0 +1,204 @@
+package packet_inspector
+
+import (
+	"encoding/json"
+	"flag"
+	"log/slog"
+	"os"
+	"time"
+
+	"git.anygate.cloud/anygatecloud/strom/mc/api"
+	"git.anygate.cloud/anygatecloud/strom/mc/client"
+	"git.anygate.cloud/anygatecloud/strom/mc/event"
+	"git.anygate.cloud/anygatecloud/strom/mc/nbt"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_base"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_21_11"
+	"git.anygate.cloud/anygatecloud/strom/mc/server"
+	"git.anygate.cloud/anygatecloud/strom/mc/text"
+)
+
+var Cmd = flag.NewFlagSet("packet-inspector", flag.ContinueOnError)
+
+var OfflineNameFlag = Cmd.String("name", "packet_inspector", "offline player name")
+var Token = Cmd.String("token", "", "token to use")
+
+var TargetAddr = Cmd.String("addr", "127.0.0.1:25565", "address to connect to")
+var ListenAddr = Cmd.String("listen", "127.0.0.1:25566", "address to listen on")
+var TrueForward = Cmd.Bool("true-forward", false, "forward packets without modification -name and custom server status wont work")
+var Version = Cmd.String("protocol-version", "", "protocol version to use; empty for auto")
+
+type Proxy struct {
+	Client, Servee *proto.Conn
+	Data           nbt.Tag
+}
+
+func (p *Proxy) Start() (err error) {
+	p.Client.RegisterCritical(p.OnAnything)
+	p.Servee.RegisterCritical(p.OnAnything)
+
+	p.Servee.RegisterCriticalUntilLatest(p.OnFinishConfiguration)
+	p.Servee.RegisterCriticalUntilLatest(p.OnFinishLogin)
+	p.Servee.RegisterCriticalUntilLatest(p.OnHandshake)
+	//p.Servee.RegisterCriticalUntilLatest(p.OnCompress)
+	p.Client.RegisterCriticalUntilLatest(p.OnCompress)
+
+	errChan := make(chan error)
+	go func() {
+		errChan <- p.Client.StartConn()
+	}()
+	go func() {
+		errChan <- p.Servee.StartConn()
+	}()
+	err = <-errChan
+	return
+}
+
+type PacketLogEvent struct {
+	Time       time.Time
+	Packet     proto_base.EncodeDecodeAble
+	Info       PacketInfoNoTypeJson
+	ClientAddr string
+}
+
+type PacketInfoNoTypeJson struct {
+	Type            proto_base.EncodeDecodeAble `json:"-"`
+	Name            string
+	Direction       proto_base.Direction
+	State           proto_base.State
+	PacketId        int32
+	ProtocolVersion int32
+}
+
+func (p *Proxy) OnAnything(e event.Anything) (err error) {
+	packet, ok := e.Val.(proto_base.EncodeDecodeAble)
+	if !ok {
+		return
+	}
+	packetInfo, ok := proto.LookupPacketInfoByType(packet)
+	if !ok {
+		return
+	}
+	jsonBytes, err := json.Marshal(PacketLogEvent{
+		Time:       time.Now(),
+		Packet:     packet,
+		ClientAddr: p.Client.RemoteAddr().String(),
+		Info:       PacketInfoNoTypeJson(packetInfo),
+	})
+	if err != nil {
+		return
+	}
+	// :pray:
+	_, _ = os.Stdout.Write(jsonBytes)
+	_, _ = os.Stdout.Write([]byte("\n"))
+
+	switch packetInfo.Direction {
+	case proto_base.ToServer:
+		err = p.Client.Send(packet)
+	case proto_base.ToClient:
+		err = p.Servee.Send(packet)
+	}
+	return
+}
+
+func (p *Proxy) OnFinishConfiguration(packet *v1_21_11.ConfigurationToServerPacketFinishConfiguration) (err error) {
+	err = p.Client.Send(packet)
+	if err != nil {
+		return
+	}
+	p.Servee.SetState(proto_base.Play)
+	p.Client.SetState(proto_base.Play)
+	err = event.DontForwardErr
+	return
+}
+
+func (p *Proxy) OnFinishLogin(packet *v1_21_11.LoginToServerPacketLoginAcknowledged) (err error) {
+	err = p.Client.Send(packet)
+	if err != nil {
+		return
+	}
+	p.Servee.SetState(proto_base.Configuration)
+	p.Client.SetState(proto_base.Configuration)
+	err = event.DontForwardErr
+	return
+}
+
+func (p *Proxy) OnHandshake(packet *v1_21_11.HandshakingToServerPacketSetProtocol) (err error) {
+	err = p.Client.Send(packet)
+	state := proto_base.State(packet.NextState)
+	if err != nil {
+		return
+	}
+	p.Servee.SetState(state)
+	p.Client.SetState(state)
+	err = event.DontForwardErr
+	return
+}
+
+func (p *Proxy) OnCompress(packet *v1_21_11.LoginToClientPacketCompress) (err error) {
+	err = p.Servee.Send(packet)
+	if err != nil {
+		return
+	}
+	p.Servee.SetCompressionThreshold(packet.Threshold)
+	p.Client.SetCompressionThreshold(packet.Threshold)
+	err = event.DontForwardErr
+	return
+}
+
+var StatusResponse = server.StatusResponse{
+	Version: server.StatusResponseVersion{
+		Name:     text.Pretty("STROM"),
+		Protocol: 772,
+	},
+	Players:            server.StatusResponsePlayers{},
+	Description:        text.Pretty("Packet spy forwards to " + *TargetAddr),
+	Favicon:            "",
+	EnforcesSecureChat: false,
+}
+
+func Run(args []string) (err error) {
+	err = Cmd.Parse(args)
+	if err != nil {
+		return
+	}
+	slog.Info("Starting packet inspector", "listen", *ListenAddr)
+	err = server.StartServerWithOnConn(*ListenAddr, func(serveeConn *proto.Conn) (err error) {
+		p := &Proxy{Servee: serveeConn, Client: nil}
+		var acc = api.NewOfflineAccount(*OfflineNameFlag)
+		if !*TrueForward {
+			if *Token != "" {
+				acc, err = api.NewAccountFromYGG(*Token)
+				if err != nil {
+					return
+				}
+			}
+			_, err = server.ServeLogin(serveeConn, server.WithOtherAccount(acc), server.WithStatus(StatusResponse), server.WithoutOnlineMode(), server.WithoutEncryption())
+			if err != nil {
+				return
+			}
+		}
+
+		*TargetAddr, _, _, err = client.DoDNSChecked(nil, *TargetAddr, nil)
+		if err != nil {
+			return
+		}
+		c, err := client.Connect(nil, *TargetAddr, *Version)
+		if err != nil {
+			return
+		}
+		defer c.Close()
+		if !*TrueForward {
+			err = client.LoginRaw(c, acc)
+			if err != nil {
+				return
+			}
+		}
+		p.Client = c
+		p.Client.AlwaysDecode = true
+		p.Servee.AlwaysDecode = true
+		err = p.Start()
+		return
+	})
+	return
+}

cmd/strom/print_nbt/main.go

@@ -0,0 +1,53 @@
+package print_nbt
+
+import (
+	"bytes"
+	"encoding/json"
+	"flag"
+	"fmt"
+	"os"
+
+	"git.anygate.cloud/anygatecloud/strom/mc/nbt"
+)
+
+var (
+	cmd            = flag.NewFlagSet("print-nbt", flag.ContinueOnError)
+	FileFlag       = cmd.String("file", "", "The NBT file to print")
+	HashFormatFlag = cmd.Bool("snbt", false, "will print with go %#v")
+)
+
+func Run(args []string) (err error) {
+	err = cmd.Parse(args)
+	if err != nil {
+		return
+	}
+	if *FileFlag == "" {
+		return fmt.Errorf("no file specified")
+	}
+	f, err := os.Open(*FileFlag)
+	if err != nil {
+		return
+	}
+	defer f.Close()
+	n, err := nbt.ReadUnstructuredFile(f)
+	if err != nil {
+		return
+	}
+	var b []byte
+	if *HashFormatFlag {
+		bb := bytes.NewBuffer(nil)
+		err = nbt.PrintSNBTAny(n.Value, bb)
+		if err != nil {
+			return
+		}
+		b = bb.Bytes()
+		//b = []byte(strings.ReplaceAll(string(b), ",", ",\n"))
+	} else {
+		b, err = json.MarshalIndent(n, "", "  ")
+	}
+	if err != nil {
+		return
+	}
+	_, err = os.Stdout.Write(b)
+	return
+}

cmd/strom/print_replay/failed_packet.go.tmpl

@@ -0,0 +1,18 @@
+package failed_packets_test
+
+import (
+	"bytes"
+	"testing"
+
+	generated "git.anygate.cloud/anygatecloud/strom/mc/proto_generated/%v"
+)
+
+// Error: %v
+func TestFailedPacket%10X(t *testing.T) {
+	p := &generated.%v{}
+	b := bytes.NewReader(%#v)
+	err := p.Decode(b)
+	if err == nil {
+		t.Fatalf("expected decode error but got nil")
+	}
+}

cmd/strom/print_replay/main.go

@@ -0,0 +1,215 @@
+package print_replay
+
+import (
+	"bytes"
+	"crypto/sha256"
+	_ "embed"
+	"encoding/binary"
+	"errors"
+	"flag"
+	"fmt"
+	"go/format"
+	"io"
+	"log/slog"
+	"os"
+	"reflect"
+	"strings"
+
+	"git.anygate.cloud/anygatecloud/strom/mc/proto"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_base"
+)
+
+var (
+	cmd             = flag.NewFlagSet("print-replay", flag.ContinueOnError)
+	FileFlag        = cmd.String("file", "", "The tmcpr file to print")
+	ProtocolVersion = cmd.Int("protocol", -1, "The protocol version")
+	CreateTestsPath = cmd.String("create-tests", "", "")
+	StateFlag       = cmd.String("state", "login", "Initial state: handshake, login, config, status, play")
+	DirectionFlag   = cmd.String("direction", "clientbound", "Packet direction: clientbound (ToClient) or serverbound (ToServer)")
+)
+
+//go:embed failed_packet.go.tmpl
+var TestSrcF string
+
+func SaveUnCodeAbleAsTest(packet *proto.UnCodablePacket) (err error) {
+	if packet.Info.Type == nil {
+		slog.Warn("skipping test for unknown packet id", "packet_id", packet.Info.PacketId, "state", packet.Info.State, "error", packet.Err)
+		return
+	}
+
+	hUntrimmed := sha256.Sum256(packet.Data)
+	h := hUntrimmed[:8]
+	if err = os.MkdirAll(*CreateTestsPath, 0755); err != nil {
+		return
+	}
+
+	typeStr := reflect.TypeOf(packet.Info.Type).String()
+	goPackage := typeStr[1:strings.LastIndex(typeStr, ".")]
+	typeName := reflect.TypeOf(packet.Info.Type).Elem().Name()
+
+	src := fmt.Sprintf(TestSrcF, goPackage, packet.Err, h, typeName, packet.Data)
+	formatted, formatErr := format.Source([]byte(src))
+	if formatErr != nil {
+		formatted = []byte(src)
+	}
+
+	filePath := fmt.Sprintf(*CreateTestsPath+"/%v_%10x_test.go", len(packet.Data), h)
+	if err = os.WriteFile(filePath, formatted, 0644); err != nil {
+		return
+	}
+	slog.Info("Packet failed to parse", "error", packet.Err, "saved", filePath, "data", fmt.Sprintf("%q", packet.Data))
+	return
+}
+
+var state = proto_base.Login
+var direction = proto_base.ToClient
+
+func UnpackPacket(r io.Reader) (packet proto_base.EncodeDecodeAble, i proto_base.PacketInfo, err error) {
+	var timestamp, length uint32
+	err = binary.Read(r, binary.BigEndian, &timestamp)
+	if err != nil {
+		return
+	}
+	err = binary.Read(r, binary.BigEndian, &length)
+	if err != nil {
+		return
+	}
+
+	// Read the packet data into a byte slice
+	packetData := make([]byte, length)
+	_, err = io.ReadFull(r, packetData)
+	if err != nil {
+		return
+	}
+
+	// Use bytes.Reader instead of bytes.Buffer
+	b := bytes.NewReader(packetData)
+
+	packetId, err := proto_base.DecodeVarInt(b)
+	if err != nil {
+		return
+	}
+
+	// Calculate position after reading the packet ID
+	// indexafterid represents how many bytes we've read so far
+	indexafterid := int(b.Size()) - b.Len()
+
+	var ok bool
+	i, ok = proto.LookUpTypeByPacketInfo(direction, state, packetId, int32(*ProtocolVersion))
+	if !ok {
+		packet = &proto.UnCodablePacket{Err: proto.BadPacketIdErr, Data: packetData, Info: i}
+		return
+	}
+	packet = reflect.New(reflect.TypeOf(i.Type).Elem()).Interface().(proto_base.EncodeDecodeAble)
+	err = packet.Decode(b)
+	if err != nil {
+		packet = &proto.UnCodablePacket{Err: err, Data: packetData[indexafterid:], Info: i}
+		return
+	}
+	if b.Len() != 0 {
+		packet = &proto.UnCodablePacket{Err: proto.PacketNotFullyDecodedErr, Data: packetData[indexafterid:], Info: i}
+		return
+	}
+	trackState(packet, i)
+	return
+}
+
+func trackState(packet proto_base.EncodeDecodeAble, i proto_base.PacketInfo) {
+	switch i.Name {
+	case "set_protocol":
+		v := reflect.ValueOf(packet).Elem()
+		nsField := v.FieldByName("NextState")
+		if nsField.IsValid() && nsField.Kind() == reflect.Int32 {
+			switch nsField.Int() {
+			case 1:
+				state = proto_base.Status
+			case 2:
+				state = proto_base.Login
+			}
+		}
+	case "login_start":
+		if int32(*ProtocolVersion) <= 47 {
+			state = proto_base.Play
+		}
+	case "success":
+		if int32(*ProtocolVersion) >= 764 {
+			state = proto_base.Configuration
+		} else {
+			state = proto_base.Play
+		}
+	case "finish_configuration":
+		state = proto_base.Play
+	case "login_acknowledged":
+		state = proto_base.Configuration
+	}
+}
+
+func Run(args []string) (err error) {
+	err = cmd.Parse(args)
+	if err != nil {
+		return
+	}
+	if *ProtocolVersion == -1 {
+		return fmt.Errorf("no protocol version specified")
+	}
+	if *FileFlag == "" {
+		return fmt.Errorf("no file specified")
+	}
+	switch *StateFlag {
+	case "handshake":
+		state = proto_base.Handshaking
+	case "login":
+		state = proto_base.Login
+	case "config":
+		state = proto_base.Configuration
+	case "play":
+		state = proto_base.Play
+	case "status":
+		state = proto_base.Status
+	default:
+		return fmt.Errorf("unknown state: %s", *StateFlag)
+	}
+	switch *DirectionFlag {
+	case "clientbound", "to-client":
+		direction = proto_base.ToClient
+	case "serverbound", "to-server":
+		direction = proto_base.ToServer
+	default:
+		return fmt.Errorf("unknown direction: %s", *DirectionFlag)
+	}
+	f, err := os.Open(*FileFlag)
+	if err != nil {
+		return
+	}
+	defer f.Close()
+
+	var totalPackets, failedPackets int
+	for {
+		var packet proto_base.EncodeDecodeAble
+		var info proto_base.PacketInfo
+		packet, info, err = UnpackPacket(f)
+		unCodablePacket, ok := packet.(*proto.UnCodablePacket)
+		if ok {
+			slog.Error("failed to decode packet", "error", err, "packet_name", info.Name)
+			if *CreateTestsPath != "" {
+				err = SaveUnCodeAbleAsTest(unCodablePacket)
+				if err != nil {
+					slog.Error("failed to save uncodable packet as test", "error", err)
+				}
+			}
+			failedPackets++
+		}
+
+		fmt.Printf("Packet: %#v\n", packet)
+		if errors.Is(err, io.EOF) || errors.Is(err, io.ErrUnexpectedEOF) {
+			break
+		}
+		totalPackets++
+	}
+	if totalPackets > 0 {
+		fmt.Printf("Total packets: %d, failed packets: %d, %%failed: %.2f%%\n", totalPackets, failedPackets, float64(failedPackets)/float64(totalPackets)*100)
+	} else {
+		fmt.Printf("Total packets: %d, failed packets: %d\n", totalPackets, failedPackets)
+	}
+	return
+}

cmd/strom/print_replay/testdata/9_0f8b37c94207f7bf_test.go

@@ -0,0 +1,18 @@
+package failed_packets_test
+
+import (
+	"bytes"
+	"testing"
+
+	generated "git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v26_2"
+)
+
+// Error: unexpected EOF
+func TestFailedPacket0F8B37C94207F7BF(t *testing.T) {
+	p := &generated.PlayToClientPacketUpdateTime{}
+	b := bytes.NewReader([]byte{0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1c, 0x42, 0x0})
+	err := p.Decode(b)
+	if err == nil {
+		t.Fatalf("expected decode error but got nil")
+	}
+}

cmd/strom/print_replay/testdata/9_6c9ad835672c5c51_test.go

@@ -0,0 +1,18 @@
+package failed_packets_test
+
+import (
+	"bytes"
+	"testing"
+
+	generated "git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v26_2"
+)
+
+// Error: unexpected EOF
+func TestFailedPacket6C9AD835672C5C51(t *testing.T) {
+	p := &generated.PlayToClientPacketUpdateTime{}
+	b := bytes.NewReader([]byte{0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1b, 0xde, 0x0})
+	err := p.Decode(b)
+	if err == nil {
+		t.Fatalf("expected decode error but got nil")
+	}
+}

cmd/strom/print_replay/testdata/9_a5d61e1c0f23e7fa_test.go

@@ -0,0 +1,18 @@
+package failed_packets_test
+
+import (
+	"bytes"
+	"testing"
+
+	generated "git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v26_2"
+)
+
+// Error: unexpected EOF
+func TestFailedPacketA5D61E1C0F23E7FA(t *testing.T) {
+	p := &generated.PlayToClientPacketUpdateTime{}
+	b := bytes.NewReader([]byte{0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1c, 0x56, 0x0})
+	err := p.Decode(b)
+	if err == nil {
+		t.Fatalf("expected decode error but got nil")
+	}
+}

cmd/strom/print_replay/testdata/9_caa58159889f7e8a_test.go

@@ -0,0 +1,18 @@
+package failed_packets_test
+
+import (
+	"bytes"
+	"testing"
+
+	generated "git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v26_2"
+)
+
+// Error: unexpected EOF
+func TestFailedPacketCAA58159889F7E8A(t *testing.T) {
+	p := &generated.PlayToClientPacketUpdateTime{}
+	b := bytes.NewReader([]byte{0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1c, 0x2e, 0x0})
+	err := p.Decode(b)
+	if err == nil {
+		t.Fatalf("expected decode error but got nil")
+	}
+}

cmd/strom/print_replay/testdata/9_d18fc4c0b2df2972_test.go

@@ -0,0 +1,18 @@
+package failed_packets_test
+
+import (
+	"bytes"
+	"testing"
+
+	generated "git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v26_2"
+)
+
+// Error: unexpected EOF
+func TestFailedPacketD18FC4C0B2DF2972(t *testing.T) {
+	p := &generated.PlayToClientPacketUpdateTime{}
+	b := bytes.NewReader([]byte{0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1b, 0xf2, 0x0})
+	err := p.Decode(b)
+	if err == nil {
+		t.Fatalf("expected decode error but got nil")
+	}
+}

cmd/strom/print_replay/testdata/9_e81e82016db04f28_test.go

@@ -0,0 +1,18 @@
+package failed_packets_test
+
+import (
+	"bytes"
+	"testing"
+
+	generated "git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v26_2"
+)
+
+// Error: unexpected EOF
+func TestFailedPacketE81E82016DB04F28(t *testing.T) {
+	p := &generated.PlayToClientPacketUpdateTime{}
+	b := bytes.NewReader([]byte{0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1c, 0x6, 0x0})
+	err := p.Decode(b)
+	if err == nil {
+		t.Fatalf("expected decode error but got nil")
+	}
+}

cmd/strom/print_replay/testdata/9_fe935cf2e584c649_test.go

@@ -0,0 +1,18 @@
+package failed_packets_test
+
+import (
+	"bytes"
+	"testing"
+
+	generated "git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v26_2"
+)
+
+// Error: unexpected EOF
+func TestFailedPacketFE935CF2E584C649(t *testing.T) {
+	p := &generated.PlayToClientPacketUpdateTime{}
+	b := bytes.NewReader([]byte{0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1c, 0x1a, 0x0})
+	err := p.Decode(b)
+	if err == nil {
+		t.Fatalf("expected decode error but got nil")
+	}
+}

cmd/strom/print_replay/testdata/reg_166_25d845b5d0023d22_test.go

@@ -0,0 +1,18 @@
+package failed_packets_test
+
+import (
+	"bytes"
+	"testing"
+
+	generated "git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v26_2"
+)
+
+// Decode regression: recipe_book_add (26.2) - SlotDisplay type fix
+func TestRegressionPacket25D845B5D0023D22(t *testing.T) {
+	p := &generated.PlayToClientPacketRecipeBookAdd{}
+	b := bytes.NewReader([]byte{0x1, 0xbe, 0x2, 0x1, 0x2, 0x2, 0x4, 0x6, 0x10, 0x6d, 0x69, 0x6e, 0x65, 0x63, 0x72, 0x61, 0x66, 0x74, 0x3a, 0x70, 0x6c, 0x61, 0x6e, 0x6b, 0x73, 0x6, 0x10, 0x6d, 0x69, 0x6e, 0x65, 0x63, 0x72, 0x61, 0x66, 0x74, 0x3a, 0x70, 0x6c, 0x61, 0x6e, 0x6b, 0x73, 0x6, 0x10, 0x6d, 0x69, 0x6e, 0x65, 0x63, 0x72, 0x61, 0x66, 0x74, 0x3a, 0x70, 0x6c, 0x61, 0x6e, 0x6b, 0x73, 0x6, 0x10, 0x6d, 0x69, 0x6e, 0x65, 0x63, 0x72, 0x61, 0x66, 0x74, 0x3a, 0x70, 0x6c, 0x61, 0x6e, 0x6b, 0x73, 0x5, 0xe8, 0x2, 0x1, 0x0, 0x0, 0x4, 0xe8, 0x2, 0x0, 0x3, 0x1, 0x4, 0x0, 0x10, 0x6d, 0x69, 0x6e, 0x65, 0x63, 0x72, 0x61, 0x66, 0x74, 0x3a, 0x70, 0x6c, 0x61, 0x6e, 0x6b, 0x73, 0x0, 0x10, 0x6d, 0x69, 0x6e, 0x65, 0x63, 0x72, 0x61, 0x66, 0x74, 0x3a, 0x70, 0x6c, 0x61, 0x6e, 0x6b, 0x73, 0x0, 0x10, 0x6d, 0x69, 0x6e, 0x65, 0x63, 0x72, 0x61, 0x66, 0x74, 0x3a, 0x70, 0x6c, 0x61, 0x6e, 0x6b, 0x73, 0x0, 0x10, 0x6d, 0x69, 0x6e, 0x65, 0x63, 0x72, 0x61, 0x66, 0x74, 0x3a, 0x70, 0x6c, 0x61, 0x6e, 0x6b, 0x73, 0x2, 0x1})
+	err := p.Decode(b)
+	if err != nil {
+		t.Fatalf("regression: decode failed: %v", err)
+	}
+}

cmd/strom/print_replay/testdata/reg_265_78c731784e6e834a_test.go

@@ -0,0 +1,17 @@
+package failed_packets_test
+
+import (
+	"bytes"
+	"testing"
+	generated "git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v26_2"
+)
+
+// Decode regression: declare_commands (26.2) - bitfield + extraNodeData fix
+func TestRegressionPacket78C731784E6E834A(t *testing.T) {
+	p := &generated.PlayToClientPacketDeclareCommands{}
+	b := bytes.NewReader([]byte{0x1a, 0x0, 0xa, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, 0x1, 0x1, 0xb, 0x2, 0x6d, 0x65, 0x5, 0x1, 0xc, 0x4, 0x68, 0x65, 0x6c, 0x70, 0x5, 0x1, 0xd, 0x4, 0x6c, 0x69, 0x73, 0x74, 0x1, 0x1, 0xe, 0x3, 0x6d, 0x73, 0x67, 0x9, 0x0, 0x4, 0x4, 0x74, 0x65, 0x6c, 0x6c, 0x9, 0x0, 0x4, 0x1, 0x77, 0x1, 0x2, 0xf, 0x10, 0x6, 0x72, 0x61, 0x6e, 0x64, 0x6f, 0x6d, 0x1, 0x1, 0x11, 0x7, 0x74, 0x65, 0x61, 0x6d, 0x6d, 0x73, 0x67, 0x9, 0x0, 0x8, 0x2, 0x74, 0x6d, 0x1, 0x1, 0x12, 0x7, 0x74, 0x72, 0x69, 0x67, 0x67, 0x65, 0x72, 0x6, 0x0, 0x6, 0x61, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x14, 0x6, 0x0, 0x7, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x5, 0x2, 0x5, 0x0, 0x5, 0x75, 0x75, 0x69, 0x64, 0x73, 0x2, 0x1, 0x13, 0x7, 0x74, 0x61, 0x72, 0x67, 0x65, 0x74, 0x73, 0x6, 0x2, 0x1, 0x1, 0x14, 0x5, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x1, 0x1, 0x15, 0x4, 0x72, 0x6f, 0x6c, 0x6c, 0x6, 0x0, 0x7, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x14, 0x16, 0x2, 0x16, 0x17, 0x9, 0x6f, 0x62, 0x6a, 0x65, 0x63, 0x74, 0x69, 0x76, 0x65, 0x18, 0x14, 0x6d, 0x69, 0x6e, 0x65, 0x63, 0x72, 0x61, 0x66, 0x74, 0x3a, 0x61, 0x73, 0x6b, 0x5f, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x6, 0x0, 0x7, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x14, 0x6, 0x0, 0x5, 0x72, 0x61, 0x6e, 0x67, 0x65, 0x27, 0x6, 0x0, 0x5, 0x72, 0x61, 0x6e, 0x67, 0x65, 0x27, 0x1, 0x1, 0x18, 0x3, 0x61, 0x64, 0x64, 0x1, 0x1, 0x19, 0x3, 0x73, 0x65, 0x74, 0x6, 0x0, 0x5, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x3, 0x0, 0x6, 0x0, 0x5, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x3, 0x0, 0x0})
+	err := p.Decode(b)
+	if err != nil {
+		t.Fatalf("regression: decode failed: %v", err)
+	}
+}

cmd/strom/print_replay/testdata/reg_55_2b76af8b937b1e8f_test.go

@@ -0,0 +1,18 @@
+package failed_packets_test
+
+import (
+	"bytes"
+	"testing"
+
+	generated "git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_8"
+)
+
+// Decode regression: spawn_entity_living (1.8) - entityMetadata mergeCompareTo
+func TestRegressionPacket2B76AF8B937B1E8F(t *testing.T) {
+	p := &generated.PlayToClientPacketSpawnEntityLiving{}
+	b := bytes.NewReader([]byte{0x4c, 0x65, 0xff, 0xff, 0xed, 0x66, 0x0, 0x0, 0x7, 0xe0, 0x0, 0x0, 0x29, 0xe6, 0x91, 0x0, 0x91, 0x0, 0x0, 0xfd, 0x8d, 0x0, 0x0, 0x0, 0x0, 0x21, 0x1, 0x2c, 0x82, 0x0, 0x12, 0x4, 0x3, 0x0, 0x4, 0x0, 0x66, 0x41, 0x20, 0x0, 0x0, 0x47, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x9, 0x0, 0xc, 0x0, 0xf, 0x0, 0x7f})
+	err := p.Decode(b)
+	if err != nil {
+		t.Fatalf("regression: decode failed: %v", err)
+	}
+}

cmd/strom/print_replay/testdata/rt_10_0c20c77ea68496bd_test.go

@@ -0,0 +1,18 @@
+package failed_packets_test
+
+import (
+	"bytes"
+	"testing"
+
+	generated "git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_8"
+)
+
+// Decode regression: entity_equipment (1.8) - nbt TAG_End fix
+func TestRegressionPacket0C20C77EA68496BD(t *testing.T) {
+	p := &generated.PlayToClientPacketEntityEquipment{}
+	b := bytes.NewReader([]byte{0x89, 0x16, 0x0, 0x0, 0x1, 0x5, 0x1, 0x0, 0x0, 0x0})
+	err := p.Decode(b)
+	if err != nil {
+		t.Fatalf("regression: decode failed: %v", err)
+	}
+}

cmd/strom/print_replay/testdata/rt_31_df2df88561529208_test.go

@@ -0,0 +1,18 @@
+package failed_packets_test
+
+import (
+	"bytes"
+	"testing"
+
+	generated "git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_8"
+)
+
+// Decode regression: entity_metadata (1.8) - entityMetadataLoop mergeCompareTo
+func TestRegressionPacketDF2DF88561529208(t *testing.T) {
+	p := &generated.PlayToClientPacketEntityMetadata{}
+	b := bytes.NewReader([]byte{0x69, 0x0, 0x0, 0x21, 0x1, 0x2c, 0x82, 0x0, 0x3, 0x0, 0x4, 0x0, 0x66, 0x40, 0x80, 0x0, 0x0, 0x47, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x9, 0x0, 0xc, 0x0, 0xf, 0x0, 0x7f})
+	err := p.Decode(b)
+	if err != nil {
+		t.Fatalf("regression: decode failed: %v", err)
+	}
+}

cmd/strom/print_replay/testdata/rt_8_1d0089bbe86a1648_test.go

@@ -0,0 +1,18 @@
+package failed_packets_test
+
+import (
+	"bytes"
+	"testing"
+
+	generated "git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v26_2"
+)
+
+// Decode regression: entity_equipment (26.2) - topBitSetTerminatedArray
+func TestRegressionPacket1D0089BBE86A1648(t *testing.T) {
+	p := &generated.PlayToClientPacketEntityEquipment{}
+	b := bytes.NewReader([]byte{0x81, 0x2, 0x0, 0x1, 0x9a, 0x7, 0x0, 0x0})
+	err := p.Decode(b)
+	if err != nil {
+		t.Fatalf("regression: decode failed: %v", err)
+	}
+}

cmd/strom/raw_to_tmcpr/main.go

@@ -0,0 +1,256 @@
+package raw_to_tmcpr
+
+import (
+	"bytes"
+	"compress/zlib"
+	"errors"
+	"flag"
+	"fmt"
+	"io"
+	"os"
+	"time"
+
+	"git.anygate.cloud/anygatecloud/strom/mc/proto/replay"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_base"
+)
+
+var Cmd = flag.NewFlagSet("raw-to-tmcpr", flag.ContinueOnError)
+
+var ClientboundIn = Cmd.String("clientbound", "", "raw tcpflow file for clientbound (server->client) direction")
+var ServerboundIn = Cmd.String("serverbound", "", "raw tcpflow file for serverbound (client->server) direction")
+var ClientboundOut = Cmd.String("clientbound-out", "clientbound.tmcpr", "output TMCPR file for clientbound")
+var ServerboundOut = Cmd.String("serverbound-out", "serverbound.tmcpr", "output TMCPR file for serverbound")
+var ClientboundState = Cmd.String("clientbound-state", "login", "initial state for clientbound: handshake, login, config, status, play")
+var ServerboundState = Cmd.String("serverbound-state", "handshake", "initial state for serverbound: handshake, login, config, status, play")
+var UseConfig = Cmd.Bool("config", false, "use Configuration state transitions (for protocol >= 764, Minecraft 1.20.2+)")
+
+type captureReader struct {
+	r              io.Reader
+	out            *replay.Writer
+	state          proto_base.State
+	threshold      int32
+	startTime      time.Time
+	haveStartTime  bool
+	direction      proto_base.Direction
+	pendingThreshold int32
+	useConfig      bool
+}
+
+func (cr *captureReader) setStartTime() {
+	if !cr.haveStartTime {
+		cr.startTime = time.Now()
+		cr.haveStartTime = true
+	}
+}
+
+func (cr *captureReader) timestamp() uint32 {
+	return uint32(time.Since(cr.startTime).Milliseconds())
+}
+
+func readPacketBytes(r io.Reader, threshold int32) ([]byte, error) {
+	packetLen, err := proto_base.DecodeVarInt(r)
+	if err != nil {
+		return nil, fmt.Errorf("read packet length: %w", err)
+	}
+
+	rawBytes := make([]byte, packetLen)
+	_, err = io.ReadFull(r, rawBytes)
+	if err != nil {
+		return nil, fmt.Errorf("read packet data: %w", err)
+	}
+
+	if threshold >= 0 {
+		buf := bytes.NewReader(rawBytes)
+		uncompressedLen, err := proto_base.DecodeVarInt(buf)
+		if err != nil {
+			return nil, fmt.Errorf("read uncompressed length: %w", err)
+		}
+		if uncompressedLen == 0 {
+			return io.ReadAll(buf)
+		} else {
+			zReader, err := zlib.NewReader(buf)
+			if err != nil {
+				return nil, fmt.Errorf("zlib reader: %w", err)
+			}
+			defer zReader.Close()
+			decompressed, err := io.ReadAll(zReader)
+			if err != nil {
+				return nil, fmt.Errorf("decompress: %w", err)
+			}
+			return decompressed, nil
+		}
+	}
+
+	return rawBytes, nil
+}
+
+func (cr *captureReader) trackState(packetBytes []byte) {
+	buf := bytes.NewReader(packetBytes)
+	packetId, err := proto_base.DecodeVarInt(buf)
+	if err != nil {
+		return
+	}
+
+	switch cr.state {
+	case proto_base.Handshaking:
+		if cr.direction == proto_base.ToServer && packetId == 0 {
+			_, err = proto_base.DecodeVarInt(buf) // protocol version
+			if err != nil {
+				return
+			}
+			_, err = proto_base.DecodeString(buf) // server address
+			if err != nil {
+				return
+			}
+			portBytes := make([]byte, 2)
+			_, err = io.ReadFull(buf, portBytes)
+			if err != nil {
+				return
+			}
+			nextState, err := proto_base.DecodeVarInt(buf)
+			if err != nil {
+				return
+			}
+			if nextState == 2 {
+				cr.state = proto_base.Login
+			} else if nextState == 1 {
+				cr.state = proto_base.Status
+			}
+		}
+	case proto_base.Login:
+		if cr.direction == proto_base.ToClient {
+			if packetId == 0x03 {
+				threshold, err := proto_base.DecodeVarInt(buf)
+				if err == nil {
+					cr.threshold = threshold
+				}
+			} else if packetId == 0x02 {
+				if cr.useConfig {
+					cr.state = proto_base.Configuration
+				} else {
+					cr.state = proto_base.Play
+				}
+			}
+		} else if cr.direction == proto_base.ToServer && packetId == 0 {
+			if cr.pendingThreshold >= 0 {
+				cr.threshold = cr.pendingThreshold
+			}
+		}
+	case proto_base.Configuration:
+		if cr.direction == proto_base.ToClient && packetId == 0x02 {
+			cr.state = proto_base.Play
+		}
+	case proto_base.Status:
+	case proto_base.Play:
+	}
+}
+
+func (cr *captureReader) process() (count int, err error) {
+	for {
+		packetBytes, err := readPacketBytes(cr.r, cr.threshold)
+		if err != nil {
+			if errors.Is(err, io.EOF) || errors.Is(err, io.ErrUnexpectedEOF) {
+				return count, nil
+			}
+			return count, err
+		}
+
+		cr.setStartTime()
+		cr.trackState(packetBytes)
+
+		err = cr.out.WriteRaw(packetBytes, cr.timestamp())
+		if err != nil {
+			return count, fmt.Errorf("write TMCPR: %w", err)
+		}
+		count++
+	}
+}
+
+func Run(args []string) (err error) {
+	err = Cmd.Parse(args)
+	if err != nil {
+		return
+	}
+
+	if *ClientboundIn == "" && *ServerboundIn == "" {
+		return fmt.Errorf("at least one of -clientbound or -serverbound must be specified")
+	}
+
+	parseState := func(name string) (proto_base.State, error) {
+		switch name {
+		case "handshake":
+			return proto_base.Handshaking, nil
+		case "login":
+			return proto_base.Login, nil
+		case "config":
+			return proto_base.Configuration, nil
+		case "play":
+			return proto_base.Play, nil
+		case "status":
+			return proto_base.Status, nil
+		default:
+			return 0, fmt.Errorf("unknown state: %s (valid: handshake, login, config, status, play)", name)
+		}
+	}
+
+	var compressionThreshold int32 = -1
+
+	if *ClientboundIn != "" {
+		state, err := parseState(*ClientboundState)
+		if err != nil {
+			return err
+		}
+		compressionThreshold, err = processFile(*ClientboundIn, *ClientboundOut, state, proto_base.ToClient, -1, *UseConfig)
+		if err != nil {
+			return fmt.Errorf("clientbound: %w", err)
+		}
+	}
+
+	if *ServerboundIn != "" {
+		state, err := parseState(*ServerboundState)
+		if err != nil {
+			return err
+		}
+		_, err = processFile(*ServerboundIn, *ServerboundOut, state, proto_base.ToServer, compressionThreshold, *UseConfig)
+		if err != nil {
+			return fmt.Errorf("serverbound: %w", err)
+		}
+	}
+
+	return
+}
+
+func processFile(inPath, outPath string, initial proto_base.State, dir proto_base.Direction, initialThreshold int32, useConfig bool) (finalThreshold int32, err error) {
+	in, err := os.Open(inPath)
+	if err != nil {
+		return initialThreshold, fmt.Errorf("open input: %w", err)
+	}
+	defer in.Close()
+
+	out, err := os.Create(outPath)
+	if err != nil {
+		return initialThreshold, fmt.Errorf("create output: %w", err)
+	}
+	defer out.Close()
+
+	cr := &captureReader{
+		r:         in,
+		out:       replay.NewWriter(out),
+		state:     initial,
+		threshold: -1,
+		direction: dir,
+		pendingThreshold: initialThreshold,
+		useConfig: useConfig,
+	}
+	if dir == proto_base.ToClient {
+		cr.threshold = initialThreshold
+	}
+
+	count, err := cr.process()
+	if err != nil {
+		return cr.threshold, err
+	}
+
+	fmt.Printf("%s: %d packets written to %s (threshold=%d)\n", inPath, count, outPath, cr.threshold)
+	return cr.threshold, nil
+}

cmd/strom/serve_tmcpr/main.go

@@ -0,0 +1,97 @@
+package serve_tmcpr
+
+import (
+	"errors"
+	"flag"
+	"io"
+	"log/slog"
+	"math/rand/v2"
+	"os"
+	"time"
+
+	"git.anygate.cloud/anygatecloud/strom/mc/event"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto/replay"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_21_8"
+	"git.anygate.cloud/anygatecloud/strom/mc/server"
+)
+
+type Server struct {
+	*proto.Conn
+	*event.Timer
+}
+
+var (
+	cmd       = flag.NewFlagSet("serve-tmcpr", flag.ContinueOnError)
+	tmcprFile = cmd.String("file", "/tmp/world.tmcpr", "Path to .tmcpr replay file")
+	bindAddr  = cmd.String("bind", ":25566", "Address to listen on")
+)
+
+func Limbo(c *proto.Conn, tmcprPath string) (err error) {
+	s := &Server{Conn: c}
+
+	_, err = server.ServeLogin(s.Conn, server.WithoutOnlineMode())
+	if err != nil {
+		return
+	}
+
+	err = server.ServeConfig(s.Conn)
+	if err != nil {
+		return
+	}
+
+	f, err := os.Open(tmcprPath)
+	if err != nil {
+		return
+	}
+	defer f.Close()
+
+	r := replay.NewReader(f)
+	r.Version = c.ProtocolVersion
+
+	start := time.Now()
+
+	for {
+		var packetData []byte
+		var timestamp uint32
+		packetData, timestamp, _, err = r.ReadRaw()
+		if err != nil {
+			if errors.Is(err, io.EOF) {
+				break
+			}
+			return err
+		}
+		time.Sleep(time.Duration(timestamp)*time.Millisecond - time.Since(start))
+		err = s.SendRaw(packetData)
+		if err != nil {
+			return err
+		}
+	}
+
+	s.Timer = &event.Timer{}
+	s.Timer.Every(time.Second*15, s.SendKeepAlive)
+	s.Timer.Start(c.Loop)
+
+	return s.StartConn()
+}
+
+func (s *Server) SendKeepAlive() error {
+	return s.Send(&v1_21_8.PlayToClientPacketKeepAlive{KeepAliveId: rand.Int64()})
+}
+
+func Run(args []string) error {
+	slog.SetLogLoggerLevel(slog.LevelDebug)
+
+	err := cmd.Parse(args)
+	if err != nil {
+		return err
+	}
+	if *tmcprFile == "" {
+		slog.Error("no file specified")
+		return nil
+	}
+
+	return server.StartServerWithOnConn(*bindAddr, func(c *proto.Conn) error {
+		return Limbo(c, *tmcprFile)
+	})
+}

cmd/strom/serve_world/main.go

@@ -0,0 +1,180 @@
+package serve_world
+
+import (
+	"bytes"
+	"fmt"
+	"log/slog"
+	"math/rand/v2"
+	"os"
+	"time"
+
+	"git.anygate.cloud/anygatecloud/strom/mc/event"
+	"git.anygate.cloud/anygatecloud/strom/mc/level"
+	"git.anygate.cloud/anygatecloud/strom/mc/level/anvil"
+	"git.anygate.cloud/anygatecloud/strom/mc/nbt"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_21_8"
+	"git.anygate.cloud/anygatecloud/strom/mc/server"
+	"git.anygate.cloud/anygatecloud/strom/mc/util"
+)
+
+type Server struct {
+	*proto.Conn
+	*event.Timer
+
+	reconnectCalled bool
+}
+
+var FullLight [][]uint8
+
+func init() {
+	light := make([]uint8, 2048)
+	for i := range light {
+		light[i] = 0xFF
+	}
+
+	sectionsPerChunk := 384 / 16
+	FullLight = make([][]uint8, sectionsPerChunk)
+	for i := range sectionsPerChunk {
+		FullLight[i] = light
+	}
+}
+
+func GetChunkFromMca(x, z int32, version string) (b []byte, err error) {
+	xmca := util.FloorDiv(x, anvil.ChunksWidthRegionFile)
+	zmca := util.FloorDiv(z, anvil.ChunksWidthRegionFile)
+	x = x % anvil.ChunksWidthRegionFile
+	if x < 0 {
+		x += anvil.ChunksWidthRegionFile
+	}
+	z = z % anvil.ChunksWidthRegionFile
+	if z < 0 {
+		z += anvil.ChunksWidthRegionFile
+	}
+
+	f, err := os.Open(fmt.Sprintf("./.devres/anvil_testdata/securechattestworld/region/r.%v.%v.mca", xmca, zmca))
+	if err != nil {
+		return
+	}
+	defer f.Close()
+	mca, err := anvil.ReadChunkHeader(f)
+	if err != nil {
+		return
+	}
+
+	var n *nbt.Tag
+	n, err = mca.ChunkAt(f, x, z)
+	if err != nil {
+		return
+	}
+	if n == nil {
+		return
+	}
+
+	var chunk anvil.Chunk
+	err = nbt.Format.Decode(n.Value, &chunk)
+	if err != nil {
+		return
+	}
+
+	var packetChunk *level.Chunk
+	packetChunk, err = chunk.ToStorage(version)
+	if err != nil {
+		return
+	}
+	buffer := bytes.NewBuffer(nil)
+	err = packetChunk.WriteChunkData(buffer)
+	if err != nil {
+		return
+	}
+	b = buffer.Bytes()
+	return
+}
+
+func Limbo(c *proto.Conn) (err error) {
+	s := &Server{
+		Conn: c,
+	}
+	_, err = server.ServeLogin(s.Conn, server.WithoutOnlineMode())
+	if err != nil {
+		return
+	}
+
+	err = server.ServeConfig(s.Conn)
+	if err != nil {
+		return
+	}
+	login := &v1_21_8.PlayToClientPacketLogin{EntityId: 73, IsHardcore: false, WorldNames: []string{"minecraft:overworld", "minecraft:the_end", "minecraft:the_nether"}, MaxPlayers: 100, ViewDistance: 10, SimulationDistance: 10, ReducedDebugInfo: false, EnableRespawnScreen: true, DoLimitedCrafting: false, WorldState: v1_21_8.PlayToClientSpawnInfo{Dimension: 0, Name: "minecraft:overworld", HashedSeed: -8365436745629239539, Gamemode: "survival", PreviousGamemode: 0xff, IsDebug: false, IsFlat: false, Death: nil, PortalCooldown: 0, SeaLevel: 63}, EnforcesSecureChat: false}
+	err = s.Send(login)
+	if err != nil {
+		return
+	}
+	err = s.Send(&v1_21_8.PlayToClientPacketPosition{
+		TeleportId: 0,
+		X:          0.5,
+		Y:          100,
+		Z:          0.5,
+		Dx:         0,
+		Dy:         0,
+		Dz:         0,
+		Yaw:        0,
+		Pitch:      0,
+		Flags:      v1_21_8.PlayToClientPositionUpdateRelatives{},
+	})
+	if err != nil {
+		return
+	}
+	err = s.Send(&v1_21_8.PlayToClientPacketUpdateViewPosition{
+		ChunkX: 0,
+		ChunkZ: 0,
+	})
+	if err != nil {
+		return
+	}
+	err = s.Send(&v1_21_8.PlayToClientPacketGameStateChange{
+		Reason: "level_chunks_load_start",
+	})
+
+	radius := int32(10)
+
+	for x := -radius; x < radius; x++ {
+		for z := -radius; z < radius; z++ {
+			var chunkData []byte
+			chunkData, err = GetChunkFromMca(x, z, c.Version)
+			if err != nil {
+				return
+			}
+			if chunkData == nil {
+				continue
+			}
+			OLDpacket := &v1_21_8.PlayToClientPacketMapChunk{}
+			OLDpacket.X = x
+			OLDpacket.Z = z
+			OLDpacket.ChunkData = v1_21_8.ByteArray{Val: chunkData}
+			OLDpacket.BlockLight = FullLight
+			OLDpacket.BlockLightMask = []int64{(1 << 24) - 1}
+			err = s.Send(OLDpacket)
+			if err != nil {
+				return
+			}
+		}
+	}
+
+	s.Timer = &event.Timer{}
+	s.Timer.Every(time.Second*15, s.SendKeepAlive)
+	s.Timer.Start(c.Loop)
+
+	return s.StartConn()
+}
+func (s *Server) SendKeepAlive() (err error) {
+	err = s.Send(&v1_21_8.PlayToClientPacketKeepAlive{KeepAliveId: rand.Int64()})
+	if err != nil {
+		return
+	}
+	return
+}
+
+func Run(args []string) error {
+	slog.SetLogLoggerLevel(slog.LevelDebug)
+	return server.StartServerWithOnConn(":25566", Limbo)
+}

cmd/strom/status/main.go

@@ -0,0 +1,98 @@
+package status
+
+import (
+	"flag"
+	"fmt"
+	"log/slog"
+	"time"
+
+	"git.anygate.cloud/anygatecloud/strom/mc/client"
+	"git.anygate.cloud/anygatecloud/strom/mc/event"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_base"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_21_8"
+)
+
+var cmd = flag.NewFlagSet("status", flag.ContinueOnError)
+var addrFlag = cmd.String("addr", "localhost:25565", "address to connect to")
+var srvFlag = cmd.Bool("srv", false, "use SRV records to resolve the address")
+var versionFlag = cmd.String("version", "1.21.8", "version to use")
+
+type StatusClient struct {
+	*proto.Conn
+	Status                        string
+	PingSendTime, PingReceiveTime time.Time
+	DoPingRoundTripTime           bool
+}
+
+func (s *StatusClient) OnStatus(p *v1_21_8.StatusToClientPacketServerInfo) (err error) {
+	s.Status = p.Response
+	s.PingSendTime = time.Now()
+	if s.DoPingRoundTripTime {
+		err = s.Send(&v1_21_8.StatusToServerPacketPing{Time: s.PingSendTime.UnixMilli()})
+	} else {
+		err = event.HandlerDoneErr{}
+	}
+	return
+}
+
+func (s *StatusClient) OnPong(p *v1_21_8.StatusToClientPacketPing) (err error) {
+	s.PingReceiveTime = time.Now()
+	err = event.HandlerDoneErr{}
+	return
+}
+
+// StatusRaw returns a StatusClient that is not connected to a server.
+// So ignore the resource leak warning. And maybe attach a warn ignore comment.
+// It does not resolve SRV records.
+func StatusRaw(addr string) (s *StatusClient, err error) {
+	c, err := client.ConnectVersionLess(nil, addr)
+	if err != nil {
+		return
+	}
+	defer c.Close()
+	err = c.SetVersion(*versionFlag)
+	if err != nil {
+		return
+	}
+	s = &StatusClient{
+		Conn: c,
+	}
+	s.RegisterCriticalUntilLatest(s.OnStatus)
+	s.RegisterCriticalUntilLatest(s.OnPong)
+
+	p, err := client.MakeHandshakePacketAddr(s.Conn, proto_base.Status, addr)
+	if err != nil {
+		return
+	}
+	err = s.Send(p)
+	if err != nil {
+		return
+	}
+	s.SetState(proto_base.Status)
+	err = s.Send(&v1_21_8.StatusToServerPacketPingStart{})
+
+	err = s.StartConn()
+	return
+}
+
+func Run(args []string) (err error) {
+	err = cmd.Parse(args)
+	if err != nil {
+		return
+	}
+	if *srvFlag {
+		*addrFlag, _, _, err = client.DoDNSChecked(nil, *addrFlag, nil)
+		if err != nil {
+			return
+		}
+	}
+	slog.Debug("resolved address to ", "addr", *addrFlag)
+
+	status, err := StatusRaw(*addrFlag)
+	if err != nil {
+		return
+	}
+	fmt.Println(status.Status)
+	return
+}

data/biomes.go

@@ -1,49 +0,0 @@
-package data
-
-// [
-//
-//	{
-//	  "id": 0,
-//	  "name": "badlands",
-//	  "category": "mesa",
-//	  "temperature": 2.0,
-//	  "has_precipitation": false,
-//	  "dimension": "overworld",
-//	  "displayName": "Badlands",
-//	  "color": 7254527
-//	},
-
-type Biome struct {
-	Id               int
-	Name             string
-	Category         string
-	Temperature      float64
-	HasPrecipitation bool
-	Dimension        string
-	DisplayName      string
-	Color            int
-}
-
-var BiomesCache = make(map[string][]Biome)
-
-func BiomesForVersion(v string) (ret []Biome) {
-	var ok bool
-	if ret, ok = BiomesCache[v]; ok {
-		return
-	}
-	var b []Biome
-	must(LoadVersionedJson(v, "biomes", &b))
-	BiomesCache[v] = b
-	return b
-}
-
-func LookupBiomeById(version string, id int32) (biome Biome, ok bool) {
-	for _, b := range BiomesForVersion(version) {
-		if b.Id == int(id) {
-			biome = b
-			ok = true
-			return
-		}
-	}
-	return
-}

data/data.go

@@ -1,36 +0,0 @@
-package data
-
-import (
-	"embed"
-	"encoding/json"
-	"errors"
-)
-
-//go:embed minecraft-data/data
-var MinecraftData embed.FS
-
-func LoadJson(path string, data any) (err error) {
-	b, err := MinecraftData.ReadFile(path)
-	if err != nil {
-		return
-	}
-	err = json.Unmarshal(b, data)
-	return
-}
-
-func LoadVersionedJson(version, dataName string, data any) (err error) {
-	b, err := MinecraftData.ReadFile("minecraft-data/data/" + Paths.Data[version][dataName] + "/" + dataName + ".json")
-	if err != nil {
-		return
-	}
-	err = json.Unmarshal(b, data)
-	return
-}
-
-var UnknownMinecraftVersionError = errors.New("unknown minecraft version")
-
-func must(err error) {
-	if err != nil {
-		panic(err)
-	}
-}

data/registry.go

@@ -1,20 +0,0 @@
-package data
-
-import (
-	"embed"
-
-	"github.com/admin-else/strom/nbt"
-)
-
-//go:embed registry/*
-var Registry embed.FS
-
-func LoadRegistry(name string) (n *nbt.Tag, err error) {
-	r, err := Registry.Open("registry/" + name + ".nbt")
-	if err != nil {
-		return
-	}
-	defer r.Close()
-	n, err = nbt.ReadFile(r)
-	return
-}

event/event_bus.go

@@ -1,177 +0,0 @@
-// Package event is the event handler
-package event
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"log/slog"
-	"reflect"
-	"time"
-)
-
-const (
-	LoopsPerSecond = 100 // i dunno seems reasonable
-	TimePerLoop    = time.Second / LoopsPerSecond
-)
-
-type Loop struct {
-	HandlerFunctions map[reflect.Type][]reflect.Value
-
-	Ctx     context.Context
-	ErrChan chan error
-	cancel  context.CancelFunc
-}
-
-type Unhandled struct {
-	Val any
-}
-
-type Anything struct {
-	Val any
-}
-
-type (
-	Tick struct{}
-)
-
-// HandlerDoneErr will stop the event loop and return the error if provided.
-type HandlerDoneErr struct {
-	Return error
-}
-
-// Close is fired when the loop shuts down.
-type Close struct {
-	Reason error
-}
-
-func (e HandlerDoneErr) Error() string {
-	return "HandlerDoneErr"
-}
-
-func (e HandlerDoneErr) Unwrap() error {
-	return e.Return
-}
-
-// ErrDontForward will stop the event from being forwarded to other handlers, including anything handlers.
-var ErrDontForward = errors.New("dont forward")
-var WhileClosingErr = errors.New("error while closing")
-
-func ValidateHandler(h any) (eventType reflect.Type, hv reflect.Value) {
-	hv = reflect.ValueOf(h)
-	if hv.Kind() != reflect.Func {
-		panic("expected method")
-	}
-	if hv.Type().NumIn() != 1 {
-		panic("expected method with one argument")
-	}
-	if hv.Type().NumOut() != 1 || hv.Type().Out(0) != reflect.TypeFor[error]() {
-		panic("expected method that returns an error")
-	}
-	eventType = hv.Type().In(0)
-	return
-}
-
-// Register registers a handler that will not close the loop if it returns an error.
-// Instead, it will log it to slog.Error
-// Warning: If a bad handler is passed in the program will panic.
-func (l *Loop) Register(h any) {
-	l.RegisterCustomType(ValidateHandler(h))
-}
-
-// RegisterCustomType registers a handler that will not close the loop if it returns an error.
-// Instead, it will log it to slog.Error
-// Warning: If a bad handler is passed in the program will panic.
-func (l *Loop) RegisterCustomType(eventType reflect.Type, hv reflect.Value) {
-	handleFunc := func(packet any) error {
-		v := hv.Call([]reflect.Value{reflect.ValueOf(packet)})[0]
-		if !v.IsNil() {
-			slog.Error("handler failed", "err", v.Interface().(error))
-		}
-		return nil
-	}
-	l.RegisterDirect(eventType, reflect.ValueOf(handleFunc))
-}
-
-// RegisterCritical registers a handler that will close the loop if it returns an error.
-// Warning: If a bad handler is passed in the program will panic.
-func (l *Loop) RegisterCritical(h any) {
-	eventType, hv := ValidateHandler(h)
-	l.RegisterDirect(eventType, hv)
-}
-
-func (l *Loop) RegisterDirect(k reflect.Type, h reflect.Value) {
-	l.HandlerFunctions[k] = append(l.HandlerFunctions[k], h)
-}
-
-// FireFound triggers all handlers registered for the specified event type and returns if handlers were found or an error occurred.
-func (l *Loop) FireFound(event any) (found bool, err error) {
-	var handlers []reflect.Value
-	if handlers, found = l.HandlerFunctions[reflect.TypeOf(event)]; found {
-		for _, handler := range handlers {
-			errV := handler.Call([]reflect.Value{reflect.ValueOf(event)})[0]
-			if !errV.IsNil() {
-				err = errV.Interface().(error)
-				err = errors.Join(fmt.Errorf("event handler failed at: %s(%T)", handler.Type().In(0), event), err)
-				return
-			}
-		}
-	}
-	return
-}
-
-// Fire dispatches the provided event to all appropriate handlers and invokes fallback handlers if the event is unhandled.
-func (l *Loop) Fire(event any) (err error) {
-	found, err := l.FireFound(event)
-	if err != nil {
-		if errors.Is(err, ErrDontForward) {
-			err = nil
-		}
-		return
-	}
-	if !found {
-		_, err = l.FireFound(Unhandled{event})
-		if err != nil {
-			return
-		}
-	}
-	_, err = l.FireFound(Anything{event})
-	return
-}
-
-func (l *Loop) startLoop() (err error) {
-	_ = *l // exit early on nil loop
-	for {
-		tickStartTime := time.Now()
-		err = l.Fire(Tick{})
-		if err != nil {
-			break
-		}
-		time.Sleep(TimePerLoop - time.Since(tickStartTime))
-	}
-	if errors.Is(err, HandlerDoneErr{}) {
-		err = errors.Unwrap(err)
-	}
-	closeErr := l.Fire(Close{err})
-	if closeErr != nil {
-		err = errors.Join(err, errors.Join(WhileClosingErr, closeErr))
-	}
-	return
-}
-
-func (l *Loop) Start() (err error) {
-	go func() {
-		l.ErrChan <- l.startLoop()
-	}()
-	err = <-l.ErrChan
-	l.cancel()
-	return
-}
-
-func NewLoop() (l *Loop) {
-	l = &Loop{}
-	l.ErrChan = make(chan error)
-	l.Ctx, l.cancel = context.WithCancel(context.Background())
-	l.HandlerFunctions = make(map[reflect.Type][]reflect.Value)
-	return
-}

event/stdin.go

@@ -1,45 +0,0 @@
-package event
-
-import (
-	"bufio"
-	"context"
-	"os"
-)
-
-type Stdin struct {
-	Val string
-}
-
-type StdinHandler struct {
-	*Loop
-	stdInChan chan Stdin
-	Ctx       context.Context
-}
-
-func (s *StdinHandler) OnTick(_ Tick) (err error) {
-	select {
-	case stdin := <-s.stdInChan:
-		err = s.Fire(Stdin{stdin.Val})
-	default:
-
-	}
-	return
-}
-
-func (s *StdinHandler) ScanJob() {
-	scanner := bufio.NewScanner(os.Stdin)
-	for scanner.Scan() {
-		select {
-		case <-s.Ctx.Done():
-			return
-		default:
-			s.stdInChan <- Stdin{scanner.Text()}
-		}
-	}
-}
-func (s *StdinHandler) OnStart() (err error) {
-	s.RegisterCritical(s.OnTick)
-	s.stdInChan = make(chan Stdin)
-	go s.ScanJob()
-	return
-}

event/timer.go

@@ -1,63 +0,0 @@
-package event
-
-import (
-	"slices"
-	"time"
-)
-
-type IntervalTask struct {
-	F           func() error
-	LastTrigger time.Time
-	Interval    time.Duration
-}
-
-type OnceTask struct {
-	F       func() error
-	Trigger time.Time
-}
-
-type Timer struct {
-	Once     []OnceTask
-	Interval []IntervalTask
-	Active   bool
-}
-
-func (t *Timer) Tick() (err error) {
-	if !t.Active {
-		return
-	}
-	for i, task := range t.Interval {
-		if time.Since(task.LastTrigger) >= task.Interval {
-			task.LastTrigger = time.Now()
-			err = task.F()
-			if err != nil {
-				return
-			}
-		}
-		t.Interval[i] = task
-	}
-	for i, task := range t.Once {
-		if task.Trigger.After(time.Now()) {
-			err = task.F()
-			if err != nil {
-				return
-			}
-			t.Once = slices.Delete(t.Once, i, i)
-		}
-	}
-	return
-}
-
-func (t *Timer) Every(interval time.Duration, f func() error) {
-	t.Interval = append(t.Interval, IntervalTask{
-		F:        f,
-		Interval: interval,
-	})
-}
-
-func (t *Timer) In(interval time.Duration, f func() error) {
-	t.Once = append(t.Once, OnceTask{
-		F:       f,
-		Trigger: time.Now().Add(interval),
-	})
-}

go.mod

@@ -1,9 +1,9 @@
-module github.com/admin-else/strom
+module git.anygate.cloud/anygatecloud/strom
 
-go 1.25
+go 1.26.2
 
 require (
-	github.com/go-viper/mapstructure/v2 v2.4.0
+	github.com/go-viper/mapstructure/v2 v2.4.0 // FIXME: this should be replaced with my version
 	github.com/google/go-cmp v0.7.0
 	github.com/google/uuid v1.6.0
 )

go.sum

@@ -2,7 +2,5 @@ github.com/go-viper/mapstructure/v2 v2.4.0 h1:EBsztssimR/CONLSZZ04E8qAkxNYq4Qp9L
 github.com/go-viper/mapstructure/v2 v2.4.0/go.mod h1:oJDH3BJKyqBA2TXFhDsKDGDTlndYOZ6rGS0BRZIxGhM=
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
-github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510 h1:El6M4kTTCOh6aBiKaUGG7oYTSPP8MxqL4YI3kZKwcP4=
-github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510/go.mod h1:pupxD2MaaD3pAXIBCelhxNneeOaAeabZDe5s4K6zSpQ=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=

level/packet.go

@@ -1,145 +0,0 @@
-package level
-
-import (
-	"encoding/binary"
-	"io"
-	"math"
-
-	"github.com/admin-else/strom/proto_base"
-)
-
-const (
-	BlocksPerChunkSection = 4096
-	BiomesPerChunkSection = 64
-)
-
-func UnpackArrayPalette(r io.Reader, bitsPerEntry uint8, numberOfEntries int) (data []int32, err error) {
-	palletLen, err := proto_base.DecodeVarInt(r)
-	if err != nil {
-		return
-	}
-	var pallet []int32 // remember we can't use make because this is user-controlled data
-	for range palletLen {
-		var entry int32
-		entry, err = proto_base.DecodeVarInt(r)
-		if err != nil {
-			return
-		}
-		pallet = append(pallet, entry)
-	}
-	data, err = UnpackLongData(r, bitsPerEntry, numberOfEntries)
-	for i, b := range data {
-		data[i] = pallet[b] // maybe check bounds?
-	}
-
-	return
-}
-
-func UnpackLongData(r io.Reader, bitsPerEntry uint8, numberOfEntries int) (data []int32, err error) {
-	entriesPerLong := int(64 / bitsPerEntry)
-	numberOfLongs := int(math.Ceil(float64(numberOfEntries) / float64(entriesPerLong)))
-	var dataL []uint64
-	for range numberOfLongs {
-		var entry uint64
-		err = binary.Read(r, binary.BigEndian, &entry)
-		if err != nil {
-			return
-		}
-		dataL = append(dataL, entry)
-	}
-
-	data = LongsToData(dataL, int32(numberOfEntries), int32(bitsPerEntry))
-	return
-}
-
-func UnpackSingleValuePalette(r io.Reader, numberOfEntries int) (data []int32, err error) {
-	entry, err := proto_base.DecodeVarInt(r)
-	if err != nil {
-		return
-	}
-	data = make([]int32, numberOfEntries)
-	for i := range data {
-		data[i] = entry
-	}
-	return
-}
-
-func LongsToData(data []uint64, n, bpe int32) (ret []int32) {
-	mask := (uint64(1) << uint32(bpe)) - 1
-	elementsPerLong := 64 / bpe
-
-	ret = make([]int32, n)
-	for i := range n {
-		ret[i] = int32((data[i/elementsPerLong] >> ((i % elementsPerLong) * bpe)) & mask)
-	}
-	return
-}
-
-// UnpackBlockData minecraft does this at net.minecraft.world.chunk.PaletteProvider
-func UnpackBlockData(r io.Reader) (blocks []int32, err error) {
-	var bitsPerEntry uint8
-	err = binary.Read(r, binary.BigEndian, &bitsPerEntry)
-	if err != nil {
-		return
-	}
-	switch bitsPerEntry {
-	case 0:
-		blocks, err = UnpackSingleValuePalette(r, BlocksPerChunkSection)
-	case 1, 2, 3, 4, 5, 6, 7, 8:
-		blocks, err = UnpackArrayPalette(r, bitsPerEntry, BlocksPerChunkSection)
-	default:
-		blocks, err = UnpackLongData(r, bitsPerEntry, BlocksPerChunkSection)
-	}
-	if err != nil {
-		return
-	}
-	return
-}
-
-func UnpackBiomeData(r io.Reader) (biomes []int32, err error) {
-	// net.minecraft.world.chunk.PaletteProvider#forBiomes
-	var bitsPerEntry uint8
-	err = binary.Read(r, binary.BigEndian, &bitsPerEntry)
-	if err != nil {
-		return
-	}
-	switch bitsPerEntry {
-	case 0:
-		biomes, err = UnpackSingleValuePalette(r, BiomesPerChunkSection)
-	case 1, 2, 3:
-		biomes, err = UnpackArrayPalette(r, bitsPerEntry, BiomesPerChunkSection)
-	default:
-		biomes, err = UnpackLongData(r, bitsPerEntry, BiomesPerChunkSection)
-	}
-	if err != nil {
-		return
-	}
-	return
-}
-
-func UnpackSection(r io.Reader) (blocks, biomes []int32, err error) {
-	var blockCount int16
-	err = binary.Read(r, binary.BigEndian, &blockCount)
-	if err != nil {
-		return
-	}
-	blocks, err = UnpackBlockData(r)
-	if err != nil {
-		return
-	}
-	biomes, err = UnpackBiomeData(r)
-	return
-}
-
-func UnpackNSections(r io.Reader, n int) (blocks, biomes [][]int32, err error) {
-	for range n {
-		var blocksSection, biomesSections []int32
-		blocksSection, biomesSections, err = UnpackSection(r)
-		if err != nil {
-			return
-		}
-		blocks = append(blocks, blocksSection)
-		biomes = append(biomes, biomesSections)
-	}
-	return
-}

mc/api/api.go

@@ -9,32 +9,40 @@ import (
 	"strings"
 	"time"
 
-	"github.com/admin-else/strom/crypto"
 	"github.com/google/uuid"
 )
 
+type Servers struct {
+	ServicesHost string
+	SessionHost  string
+	ProfilesHost string
+}
+
+var DefaultServers = &Servers{
+	ServicesHost: "https://api.minecraftservices.com",
+	SessionHost:  "https://sessionserver.mojang.com",
+	ProfilesHost: "https://api.mojang.com",
+}
+
 type Account struct {
+	*Servers
 	Name string
 	Uuid uuid.UUID
 	Ygg  string
 }
 
-const (
-	BaseUrlApi = "https://api.minecraftservices.com"
-)
-
 func (a *Account) doMcApiRequest(method string, url string, from any, to any) (err error) {
 	var b []byte
 	if method != "GET" {
 		b, err = json.Marshal(from)
 		if err != nil {
-			return err
+			return
 		}
 	}
 
 	r, err := http.NewRequest(method, url, bytes.NewReader(b))
 	if err != nil {
-		return err
+		return
 	}
 
 	r.Header.Set("Content-Type", "application/json")
@@ -44,21 +52,22 @@ func (a *Account) doMcApiRequest(method string, url string, from any, to any) (e
 
 	resp, err := http.DefaultClient.Do(r)
 	if err != nil {
-		return err
+		return
 	}
+	defer resp.Body.Close()
 
 	if !(resp.StatusCode >= 200 && resp.StatusCode <= 299) {
 		return fmt.Errorf("bad status code %v", resp.StatusCode)
 	}
 	b, err = io.ReadAll(resp.Body)
 	if err != nil {
-		return err
+		return
 	}
 	err = json.Unmarshal(b, to)
 	if err != nil {
-		return err
+		return
 	}
-	return nil
+	return
 }
 
 type PlayerKeys struct {
@@ -73,7 +82,7 @@ type PlayerKeys struct {
 }
 
 func (a *Account) FetchKeys() (keys PlayerKeys, err error) {
-	err = a.doMcApiRequest("POST", BaseUrlApi+"/player/certificates", nil, &keys)
+	err = a.doMcApiRequest("POST", a.ServicesHost+"/player/certificates", nil, &keys)
 	return
 }
 
@@ -90,10 +99,12 @@ func (a *Account) JoinServer(serverId string) (err error) {
 	if err != nil {
 		return
 	}
-	resp, err := http.Post("https://sessionserver.mojang.com/session/minecraft/join", "application/json", bytes.NewReader(body))
+	resp, err := http.Post(a.SessionHost+"/session/minecraft/join", "application/json", bytes.NewReader(body))
 	if err != nil {
 		return
 	}
+	defer resp.Body.Close()
+
 	if resp.StatusCode != 204 {
 		body, err = io.ReadAll(resp.Body)
 		if err != nil {
@@ -112,17 +123,10 @@ type NameChangResp struct {
 }
 
 func (a *Account) NameChangeInfo() (r NameChangResp, err error) {
-	err = a.doMcApiRequest("GET", "https://api.minecraftservices.com/minecraft/profile/namechange", nil, &r)
+	err = a.doMcApiRequest("GET", a.ServicesHost+"/minecraft/profile/namechange", nil, &r)
 	return
 }
 
-func NewOfflineAccount(name string) *Account {
-	return &Account{
-		Name: name,
-		Uuid: crypto.FromOfflinePlayer(name),
-	}
-}
-
 // PlayerProfile represents the player's profile information
 type PlayerProfile struct {
 	ID    string `json:"id"`
@@ -143,7 +147,7 @@ type PlayerProfile struct {
 
 // QueryProfile queries the player's profile
 func (a *Account) QueryProfile() (profile PlayerProfile, err error) {
-	err = a.doMcApiRequest("GET", BaseUrlApi+"/minecraft/profile", nil, &profile)
+	err = a.doMcApiRequest("GET", a.ServicesHost+"/minecraft/profile", nil, &profile)
 	return
 }
 
@@ -181,7 +185,7 @@ type PlayerAttributes struct {
 
 // QueryAttributes queries the player's attributes
 func (a *Account) QueryAttributes() (attrs PlayerAttributes, err error) {
-	err = a.doMcApiRequest("GET", BaseUrlApi+"/player/attributes", nil, &attrs)
+	err = a.doMcApiRequest("GET", a.ServicesHost+"/player/attributes", nil, &attrs)
 	return
 }
 
@@ -194,7 +198,7 @@ type ModifyAttributesRequest struct {
 
 // ModifyAttributes modifies the player's attributes
 func (a *Account) ModifyAttributes(req ModifyAttributesRequest) (attrs PlayerAttributes, err error) {
-	err = a.doMcApiRequest("POST", BaseUrlApi+"/player/attributes", req, &attrs)
+	err = a.doMcApiRequest("POST", a.ServicesHost+"/player/attributes", req, &attrs)
 	return
 }
 
@@ -205,24 +209,23 @@ type BlockedUsers struct {
 
 // GetBlocklist gets the list of blocked users
 func (a *Account) GetBlocklist() (blocklist BlockedUsers, err error) {
-	err = a.doMcApiRequest("GET", BaseUrlApi+"/privacy/blocklist", nil, &blocklist)
+	err = a.doMcApiRequest("GET", a.ServicesHost+"/privacy/blocklist", nil, &blocklist)
 	return
 }
 
-// CheckNameAvailability checks if a name is available
 type NameAvailability struct {
 	Status string `json:"status"` // DUPLICATE, AVAILABLE, NOT_ALLOWED
 }
 
 // CheckNameAvailability checks if a name is available
 func (a *Account) CheckNameAvailability(name string) (avail NameAvailability, err error) {
-	err = a.doMcApiRequest("GET", BaseUrlApi+"/minecraft/profile/name/"+name+"/available", nil, &avail)
+	err = a.doMcApiRequest("GET", a.ServicesHost+"/minecraft/profile/name/"+name+"/available", nil, &avail)
 	return
 }
 
 // ChangeName changes the player's name
 func (a *Account) ChangeName(newName string) (profile PlayerProfile, err error) {
-	err = a.doMcApiRequest("PUT", BaseUrlApi+"/minecraft/profile/name/"+newName, nil, &profile)
+	err = a.doMcApiRequest("PUT", a.ServicesHost+"/minecraft/profile/name/"+newName, nil, &profile)
 	return
 }
 
@@ -234,19 +237,19 @@ type ChangeSkinRequest struct {
 
 // ChangeSkin changes the player's skin
 func (a *Account) ChangeSkin(req ChangeSkinRequest) (profile PlayerProfile, err error) {
-	err = a.doMcApiRequest("POST", BaseUrlApi+"/minecraft/profile/skins", req, &profile)
+	err = a.doMcApiRequest("POST", a.ServicesHost+"/minecraft/profile/skins", req, &profile)
 	return
 }
 
 // ResetSkin resets the player's skin to default
 func (a *Account) ResetSkin() (profile PlayerProfile, err error) {
-	err = a.doMcApiRequest("DELETE", BaseUrlApi+"/minecraft/profile/skins/active", nil, &profile)
+	err = a.doMcApiRequest("DELETE", a.ServicesHost+"/minecraft/profile/skins/active", nil, &profile)
 	return
 }
 
 // HideCape hides the player's active cape
 func (a *Account) HideCape() (profile PlayerProfile, err error) {
-	err = a.doMcApiRequest("DELETE", BaseUrlApi+"/minecraft/profile/capes/active", nil, &profile)
+	err = a.doMcApiRequest("DELETE", a.ServicesHost+"/minecraft/profile/capes/active", nil, &profile)
 	return
 }
 
@@ -258,29 +261,58 @@ type ShowCapeRequest struct {
 // ShowCape shows a specific cape
 func (a *Account) ShowCape(capeID string) (profile PlayerProfile, err error) {
 	req := ShowCapeRequest{CapeID: capeID}
-	err = a.doMcApiRequest("PUT", BaseUrlApi+"/minecraft/profile/capes/active", req, &profile)
+	err = a.doMcApiRequest("PUT", a.ServicesHost+"/minecraft/profile/capes/active", req, &profile)
 	return
 }
 
 // CheckGiftCodeValidity checks if a gift code is valid
 func (a *Account) CheckGiftCodeValidity(giftCode string) (valid bool, err error) {
-	url := BaseUrlApi + "/productvoucher/giftcode"
+	url := a.ServicesHost + "/productvoucher/" + giftCode
 	r, err := http.NewRequest("GET", url, nil)
 	if err != nil {
-		return false, err
+		return
 	}
 
 	r.Header.Set("Authorization", "Bearer "+a.Ygg)
 
 	resp, err := http.DefaultClient.Do(r)
 	if err != nil {
-		return false, err
+		return
 	}
 	defer resp.Body.Close()
 
 	// Returns HTTP 200 or 204 if valid, 404 if invalid
 	if resp.StatusCode == 200 || resp.StatusCode == 204 {
-		return true, nil
+		valid = true
+		return
+	}
+	return
+}
+
+// NewAccountFromYGG creates an Account by authenticating the YGG token against
+// Mojang's API. It makes an HTTP call to fetch the player profile and returns
+// an Account with name and UUID populated, or an error if authentication fails.
+func NewAccountFromYGG(ygg string) (a *Account, err error) {
+	a = &Account{
+		Ygg:     ygg,
+		Servers: DefaultServers,
+	}
+	p, err := a.QueryProfile()
+	if err != nil {
+		return
+	}
+	a.Name = p.Name
+	a.Uuid, err = uuid.Parse(strings.ReplaceAll(p.ID, "-", ""))
+	return
+}
+
+// NewAccount creates an Account from explicit name, UUID, and YGG token without
+// making any HTTP calls. The account uses Mojang's default API servers.
+func NewAccount(name string, uuid uuid.UUID, ygg string) (a *Account) {
+	return &Account{
+		Name:    name,
+		Uuid:    uuid,
+		Ygg:     ygg,
+		Servers: DefaultServers,
 	}
-	return false, nil
 }

mc/api/offline.go

@@ -0,0 +1,14 @@
+package api
+
+import (
+	"git.anygate.cloud/anygatecloud/strom/mc/crypto"
+)
+
+// NewOfflineAccount creates an offline-mode Account with a UUID derived from the
+// player name. No HTTP calls are made; the UUID is computed locally.
+func NewOfflineAccount(name string) *Account {
+	return &Account{
+		Name: name,
+		Uuid: crypto.FromOfflinePlayer(name),
+	}
+}

mc/api/unauthenticated.go

@@ -0,0 +1,143 @@
+package api
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+)
+
+// BlockedServers fetches the list of SHA-1 hashes of blocked server IPs from
+// Mojang's session server. The returned strings are hex-encoded hashes.
+func BlockedServers() (s []string, err error) {
+	resp, err := http.Get("https://sessionserver.mojang.com/blockedservers")
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+	d, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return
+	}
+	s = strings.Split(string(d), "\n")
+	return
+}
+
+type ProfileProperty struct {
+	Name      string `json:"name"`
+	Signature string `json:"signature,omitempty"`
+	Value     string `json:"value"`
+}
+
+type ProfileResp struct {
+	Id         string            `json:"id"`
+	Name       string            `json:"name"`
+	Legacy     bool              `json:"legacy"`
+	Properties []ProfileProperty `json:"properties"`
+}
+
+// HasJoined checks with Mojang's session server whether a player has joined a
+// given server. name is the player name, server is the server hash, and ip is
+// the optional player IP address. Returns the player's profile on success.
+func HasJoined(name, server, ip string) (p ProfileResp, err error) {
+	url := "https://sessionserver.mojang.com/session/minecraft/hasJoined?username=" + name + "&serverId=" + server
+	if ip != "" {
+		url += "&ip=" + ip
+	}
+	resp, err := http.Get(url)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != 200 {
+		err = fmt.Errorf("bad status code %v", resp.StatusCode)
+		return
+	}
+	err = json.NewDecoder(resp.Body).Decode(&p)
+	return
+}
+
+type MojangPublicKeysResp struct {
+	ProfilePropertyKeys   []string `json:"profilePropertyKeys"`
+	PlayerCertificateKeys []string `json:"playerCertificateKeys"`
+
+	// AuthenticationKeys are undocumented by wiki.vg but they exist as of the time of writing so ill include them
+	AuthenticationKeys []string `json:"authenticationKeys"`
+}
+
+// MojangPublicKeys fetches Mojang's public keys for profile property signing and
+// player certificate verification from the session server.
+func MojangPublicKeys() (keys MojangPublicKeysResp, err error) {
+	resp, err := http.Get("https://sessionserver.mojang.com/session/minecraft/profile/public_key_by_token")
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+	err = json.NewDecoder(resp.Body).Decode(&keys)
+	return
+}
+
+// Profile fetches a player's profile by UUID from Mojang's session server.
+// If unsigned is false, signed profile properties are included in the response.
+func Profile(id string, unsinged bool) (p ProfileResp, err error) {
+	url := "https://sessionserver.mojang.com/session/minecraft/profile/" + id
+	if !unsinged {
+		url += "?unsigned=false"
+	}
+	resp, err := http.Get(url)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+	err = json.NewDecoder(resp.Body).Decode(&p)
+	return
+}
+
+type IdName struct {
+	Id   string `json:"id"`
+	Name string `json:"name"`
+}
+
+// NameToId resolves a Minecraft player name to a UUID and canonical name by
+// making an HTTP GET to Mojang's API.
+func NameToId(name string) (idName IdName, err error) {
+	// may also use these:
+	//https://api.mojang.com/users/profiles/minecraft/<player name>
+	//https://api.minecraftservices.com/minecraft/profile/lookup/name/<player name>
+	//https://api.mojang.com/minecraft/profile/lookup/name/<player name>
+	resp, err := http.Get("https://api.minecraftservices.com/minecraft/profile/lookup/name/" + name)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+	err = json.NewDecoder(resp.Body).Decode(&idName)
+	return
+}
+
+// NameToIdBulk resolves multiple Minecraft player names to UUIDs and canonical
+// names in a single HTTP POST to Mojang's API.
+func NameToIdBulk(names []string) (idNames []IdName, err error) {
+	b := bytes.NewBuffer(nil)
+	err = json.NewEncoder(b).Encode(names)
+	if err != nil {
+		return
+	}
+	// may also use these:
+	//https://api.mojang.com/profiles/minecraft
+	//https://api.minecraftservices.com/minecraft/profile/lookup/bulk/byname
+	//https://api.mojang.com/minecraft/profile/lookup/bulk/byname
+	r, err := http.NewRequest("POST", "https://api.minecraftservices.com/minecraft/profile/lookup/bulk/byname", b)
+	if err != nil {
+		return
+	}
+	r.Header.Set("Content-Type", "application/json")
+	resp, err := http.DefaultClient.Do(r)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+	err = json.NewDecoder(resp.Body).Decode(&idNames)
+	return
+}

mc/bot/chat/mod.go

@@ -0,0 +1,215 @@
+package chat
+
+import (
+	"crypto"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/sha256"
+	"crypto/x509"
+	"encoding/base64"
+	"encoding/binary"
+	"encoding/pem"
+	"fmt"
+	"time"
+
+	"git.anygate.cloud/anygatecloud/strom/mc/api"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_21_11"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_8"
+	"github.com/google/uuid"
+)
+
+type Module struct {
+	*proto.Conn
+
+	Account *api.Account
+
+	// Chat signing state
+	canSign     bool
+	privKey     *rsa.PrivateKey
+	sessionUUID uuid.UUID
+	msgIndex    int32
+}
+
+// Start creates a chat module for the connection. If acc is an online account,
+// it fetches the profile key pair from Mojang and enables signed chat.
+func Start(c *proto.Conn, acc *api.Account) (*Module, error) {
+	m := &Module{Conn: c, Account: acc}
+	if acc != nil && acc.Ygg != "" {
+		if err := m.initSigning(acc); err != nil {
+			return nil, err
+		}
+	}
+	return m, nil
+}
+
+func (m *Module) initSigning(acc *api.Account) (err error) {
+	if m.Conn.ProtocolVersion < 764 {
+		return nil
+	}
+	keys, err := acc.FetchKeys()
+	if err != nil {
+		return fmt.Errorf("fetch profile keys: %w", err)
+	}
+
+	priv, err := parsePrivateKey(keys.KeyPair.PrivateKey)
+	if err != nil {
+		return fmt.Errorf("parse private key: %w", err)
+	}
+
+	m.privKey = priv
+	m.sessionUUID = uuid.New()
+
+	pubDer, err := x509.MarshalPKIXPublicKey(&priv.PublicKey)
+	if err != nil {
+		return fmt.Errorf("marshal public key: %w", err)
+	}
+
+	sigBytes, err := base64.StdEncoding.DecodeString(keys.PublicKeySignatureV2)
+	if err != nil {
+		return fmt.Errorf("decode key signature: %w", err)
+	}
+
+	if err = m.Conn.Send(&v1_21_11.PlayToServerPacketChatSessionUpdate{
+		SessionUUID: m.sessionUUID,
+		ExpireTime:  keys.ExpiresAt.UnixMilli(),
+		PublicKey:   v1_21_11.ByteArray{Val: pubDer},
+		Signature:   v1_21_11.ByteArray{Val: sigBytes},
+	}); err != nil {
+		return fmt.Errorf("send chat session update: %w", err)
+	}
+
+	m.canSign = true
+	return nil
+}
+
+// SendMessage sends a chat message. If signing is enabled, the message is signed;
+// otherwise it is sent unsigned. For pre-1.19 protocol versions, uses the legacy
+// chat packet format (plain string).
+func (m *Module) SendMessage(message string) (err error) {
+	if m.Conn.ProtocolVersion < 764 {
+		return m.Conn.Send(&v1_8.PlayToServerPacketChat{Message: message})
+	}
+	if m.canSign {
+		return m.sendSigned(message)
+	}
+	return m.Conn.Send(&v1_21_11.PlayToServerPacketChatMessage{Message: message})
+}
+
+func (m *Module) sendSigned(message string) (err error) {
+	now := time.Now()
+
+	saltBytes := make([]byte, 8)
+	if _, err = rand.Read(saltBytes); err != nil {
+		return
+	}
+	salt := int64(binary.BigEndian.Uint64(saltBytes))
+
+	timestamp := now.UnixMilli()
+
+	payload, err := m.buildSignaturePayload(message, salt, timestamp)
+	if err != nil {
+		return
+	}
+
+	hashed := sha256.Sum256(payload)
+	sigBytes, err := rsa.SignPKCS1v15(rand.Reader, m.privKey, crypto.SHA256, hashed[:])
+	if err != nil {
+		return
+	}
+	if len(sigBytes) != 256 {
+		return fmt.Errorf("unexpected signature length: %d", len(sigBytes))
+	}
+	var signature [256]byte
+	copy(signature[:], sigBytes)
+
+	m.msgIndex++
+
+	return m.Conn.Send(&v1_21_11.PlayToServerPacketChatMessage{
+		Message:      message,
+		Timestamp:    timestamp,
+		Salt:         salt,
+		Signature:    &signature,
+		Offset:       0,
+		Acknowledged: [3]byte{},
+		Checksum:     0,
+	})
+}
+
+func (m *Module) buildSignaturePayload(content string, salt, timestampMillis int64) ([]byte, error) {
+	buf := make([]byte, 0, 64+len(content))
+	w := func(b []byte) { buf = append(buf, b...) }
+
+	// Header
+	w(int32Bytes(1))
+
+	// SignedMessageLink: sender UUID, session UUID, index
+	w(uuidBytes(m.Account.Uuid))
+	w(uuidBytes(m.sessionUUID))
+	w(int32Bytes(m.msgIndex))
+
+	// SignedMessageBody: salt, timestamp seconds, content
+	w(int64Bytes(uint64(salt)))
+	w(int64Bytes(uint64(timestampMillis / 1000)))
+	contentBytes := []byte(content)
+	w(int32Bytes(int32(len(contentBytes))))
+	w(contentBytes)
+
+	// LastSeenMessages: empty
+	w(int32Bytes(0))
+
+	return buf, nil
+}
+
+func parsePrivateKey(s string) (*rsa.PrivateKey, error) {
+	block, _ := pem.Decode([]byte(s))
+	if block != nil {
+		k, err := x509.ParsePKCS8PrivateKey(block.Bytes)
+		if err != nil {
+			k, err = x509.ParsePKCS1PrivateKey(block.Bytes)
+		}
+		if err != nil {
+			return nil, err
+		}
+		if key, ok := k.(*rsa.PrivateKey); ok {
+			return key, nil
+		}
+		return nil, fmt.Errorf("not an RSA private key")
+	}
+
+	// Some implementations return raw base64 DER instead of PEM
+	raw, err := base64.StdEncoding.DecodeString(s)
+	if err != nil {
+		return nil, err
+	}
+	k, err := x509.ParsePKCS8PrivateKey(raw)
+	if err != nil {
+		k, err = x509.ParsePKCS1PrivateKey(raw)
+	}
+	if err != nil {
+		return nil, err
+	}
+	key, ok := k.(*rsa.PrivateKey)
+	if !ok {
+		return nil, fmt.Errorf("not an RSA private key")
+	}
+	return key, nil
+}
+
+func int32Bytes(v int32) []byte {
+	b := make([]byte, 4)
+	binary.BigEndian.PutUint32(b, uint32(v))
+	return b
+}
+
+func int64Bytes(v uint64) []byte {
+	b := make([]byte, 8)
+	binary.BigEndian.PutUint64(b, v)
+	return b
+}
+
+func uuidBytes(u uuid.UUID) []byte {
+	b := make([]byte, 16)
+	copy(b, u[:])
+	return b
+}

mc/bot/keepalive/mod.go

@@ -0,0 +1,20 @@
+package keepalive
+
+import (
+	"git.anygate.cloud/anygatecloud/strom/mc/proto"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_21_8"
+)
+
+type mod struct {
+	*proto.Conn
+}
+
+func (m *mod) onKeepAlive(p *v1_21_8.PlayToClientPacketKeepAlive) (err error) {
+	return m.Send(&v1_21_8.PlayToServerPacketKeepAlive{KeepAliveId: p.KeepAliveId})
+}
+
+// Start begins responding to keep-alive packets on the connection.
+func Start(c *proto.Conn) {
+	m := &mod{Conn: c}
+	m.RegisterUntilLatest(m.onKeepAlive)
+}

mc/bot/world/mod.go

@@ -0,0 +1,178 @@
+package world
+
+import (
+	"bytes"
+	"errors"
+	"sync"
+
+	"git.anygate.cloud/anygatecloud/strom/mc/level"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_21_11"
+)
+
+var (
+	ChunkNotLoadedErr = errors.New("chunk not loaded")
+	OutOfBoundsErr    = errors.New("coordinates out of bounds")
+)
+
+// ChunkPos identifies a chunk column.
+type ChunkPos struct {
+	X, Z int32
+}
+
+// World stores a shareable in-memory view of the Minecraft world.
+// Multiple bots can subscribe to the same World and update it from their
+// respective connections.
+type World struct {
+	mu      sync.RWMutex
+	chunks  map[ChunkPos]*level.Chunk
+	version string
+	minY    int
+	height  int
+}
+
+// NewWorld creates a new World for the given protocol version and vertical
+// bounds. For a 1.21 overworld use minY=-64 and height=384.
+func NewWorld(version string, minY, height int) *World {
+	return &World{
+		chunks:  make(map[ChunkPos]*level.Chunk),
+		version: version,
+		minY:    minY,
+		height:  height,
+	}
+}
+
+// GetBlock returns the global block state ID at the given world coordinates.
+func (w *World) GetBlock(x, y, z int32) (stateId int32, err error) {
+	w.mu.RLock()
+	defer w.mu.RUnlock()
+	return w.getBlockLocked(x, y, z)
+}
+
+func (w *World) getBlockLocked(x, y, z int32) (stateId int32, err error) {
+	chunkX := floorDiv(x, level.ChunkWidth)
+	chunkZ := floorDiv(z, level.ChunkWidth)
+	chunk, ok := w.chunks[ChunkPos{chunkX, chunkZ}]
+	if !ok {
+		err = ChunkNotLoadedErr
+		return
+	}
+
+	sectionIndex := (int(y) - w.minY) / level.ChunkWidth
+	if sectionIndex < 0 || sectionIndex >= len(chunk.Sections) {
+		err = OutOfBoundsErr
+		return
+	}
+
+	lx, ly, lz := blockToLocal(x, y, z)
+	index := ly*level.ChunkWidth*level.ChunkWidth + lz*level.ChunkWidth + lx
+	return chunk.Sections[sectionIndex].Blocks.Get(index)
+}
+
+// SetBlock updates the global block state ID at the given world coordinates.
+func (w *World) SetBlock(x, y, z int32, stateId int32) (err error) {
+	w.mu.Lock()
+	defer w.mu.Unlock()
+
+	chunkX := floorDiv(x, level.ChunkWidth)
+	chunkZ := floorDiv(z, level.ChunkWidth)
+	chunk, ok := w.chunks[ChunkPos{chunkX, chunkZ}]
+	if !ok {
+		return ChunkNotLoadedErr
+	}
+
+	sectionIndex := (int(y) - w.minY) / level.ChunkWidth
+	if sectionIndex < 0 || sectionIndex >= len(chunk.Sections) {
+		return OutOfBoundsErr
+	}
+
+	lx, ly, lz := blockToLocal(x, y, z)
+	index := ly*level.ChunkWidth*level.ChunkWidth + lz*level.ChunkWidth + lx
+	return chunk.Sections[sectionIndex].Blocks.Set(index, stateId)
+}
+
+// Module subscribes to chunk and block-change packets and updates a shared
+// World. Multiple Modules can point to the same World.
+type Module struct {
+	*proto.Conn
+	world *World
+}
+
+// GetBlock returns the block state ID at the given world coordinates via the
+// shared World.
+func (m *Module) GetBlock(x, y, z int32) (int32, error) {
+	return m.world.GetBlock(x, y, z)
+}
+
+// Start registers packet handlers on c that update the shared World w.
+func Start(c *proto.Conn, w *World) *Module {
+	m := &Module{Conn: c, world: w}
+	m.RegisterUntilLatest(m.onMapChunk)
+	m.RegisterUntilLatest(m.onBlockChange)
+	m.RegisterUntilLatest(m.onMultiBlockChange)
+	return m
+}
+
+func (m *Module) onMapChunk(p *v1_21_11.PlayToClientPacketMapChunk) (err error) {
+	chunk, err := level.ReadChunkFromChunkPacketData(
+		bytes.NewReader(p.ChunkData.Val),
+		m.world.version,
+		m.world.height,
+	)
+	if err != nil {
+		return
+	}
+
+	m.world.mu.Lock()
+	m.world.chunks[ChunkPos{p.X, p.Z}] = chunk
+	m.world.mu.Unlock()
+	return nil
+}
+
+func (m *Module) onBlockChange(p *v1_21_11.PlayToClientPacketBlockChange) (err error) {
+	return m.world.SetBlock(p.Location.X, int32(p.Location.Y), p.Location.Z, p.Type)
+}
+
+func (m *Module) onMultiBlockChange(p *v1_21_11.PlayToClientPacketMultiBlockChange) (err error) {
+	chunkX := p.ChunkCoordinates.X
+	chunkZ := p.ChunkCoordinates.Z
+	sectionY := p.ChunkCoordinates.Y
+
+	for _, record := range p.Records {
+		packedPos := record & 0xFFF
+		stateId := record >> 12
+
+		localX := (packedPos >> 8) & 0xF
+		localY := (packedPos >> 4) & 0xF
+		localZ := packedPos & 0xF
+
+		x := chunkX*level.ChunkWidth + int32(localX)
+		y := sectionY*level.ChunkWidth + int32(localY)
+		z := chunkZ*level.ChunkWidth + int32(localZ)
+
+		if err = m.world.SetBlock(x, y, z, stateId); err != nil {
+			return
+		}
+	}
+	return nil
+}
+
+func floorDiv(a, b int32) int32 {
+	return (a - ((a%b + b) % b)) / b
+}
+
+func blockToLocal(x, y, z int32) (lx, ly, lz int32) {
+	lx = x % level.ChunkWidth
+	if lx < 0 {
+		lx += level.ChunkWidth
+	}
+	ly = y % level.ChunkWidth
+	if ly < 0 {
+		ly += level.ChunkWidth
+	}
+	lz = z % level.ChunkWidth
+	if lz < 0 {
+		lz += level.ChunkWidth
+	}
+	return
+}

mc/client/client.go

@@ -0,0 +1,82 @@
+package client
+
+import (
+	"context"
+	"errors"
+	"net"
+
+	"git.anygate.cloud/anygatecloud/strom/mc/data"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_base"
+	"git.anygate.cloud/anygatecloud/strom/mc/server"
+)
+
+// Connect connects to the given address note that it does not resolve the SRV records it's just a raw net.Dial
+// You must close the connection when you're done with it
+// version must be a vaild minecraft version eg 1.21.11 if left empty it will be detected with a status-request.
+func Connect(ctx context.Context, addr string, version string) (ret *proto.Conn, err error) {
+	var protocolVersion int32
+	if version == "" {
+		var s server.StatusResponse
+		s, err = Status(ctx, addr)
+		if err != nil {
+			return
+		}
+		if s.Version.Protocol == 0 {
+			err = errors.New("server didnt return protocol version")
+			return
+		}
+		protocolVersion = s.Version.Protocol
+	} else {
+		var v data.VersionInfo
+		v, err = data.LookUpVersionByName(version)
+		if err != nil {
+			return
+		}
+		protocolVersion = v.Version
+	}
+	ret, err = ConnectVersionLess(ctx, addr)
+	if err != nil {
+		return
+	}
+	err = ret.SetProtocolVersion(protocolVersion)
+	return
+}
+
+// ConnectVersionLess connects to the given address without setting the version you should set it
+// when using this function.
+// You must close the connection when you're done with it
+func ConnectVersionLess(ctx context.Context, addr string) (ret *proto.Conn, err error) {
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	ret = proto.NewConnCtx(ctx)
+	ret.Actor = proto_base.Client
+	ret.Conn, err = (&net.Dialer{}).DialContext(ctx, "tcp", addr)
+	if err != nil {
+		return
+	}
+	ret.R = ret.Conn
+	ret.W = ret.Conn
+	return
+}
+
+// ConnectWithConn wraps an existing net.Conn into a proto.Conn with the given
+// Minecraft version. The version must be non-empty.
+func ConnectWithConn(ctx context.Context, conn net.Conn, version string) (ret *proto.Conn, err error) {
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	ret = proto.NewConnCtx(ctx)
+	ret.Actor = proto_base.Client
+	ret.Conn = conn
+	ret.R = conn
+	ret.W = conn
+	v, err := data.LookUpVersionByName(version)
+	if err != nil {
+		return
+	}
+	ret.ProtocolVersion = v.Version
+	ret.Version = version
+	return
+}

mc/client/config_ignorer.go

@@ -3,12 +3,11 @@ package client
 import (
 	"errors"
 	"fmt"
-	"log/slog"
 
-	"github.com/admin-else/strom/event"
+	"git.anygate.cloud/anygatecloud/strom/mc/event"
-	"github.com/admin-else/strom/proto"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto"
-	"github.com/admin-else/strom/proto_base"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_base"
-	"github.com/admin-else/strom/proto_generated/v1_21_8"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_21_8"
 )
 
 type ConfigIgnorer struct {
@@ -19,8 +18,8 @@ func (c *ConfigIgnorer) OnStart() (err error) {
 	return
 }
 
-func (c *ConfigIgnorer) Default(event event.Anything) (err error) {
+func (c *ConfigIgnorer) Default(e event.Anything) (err error) {
-	slog.Debug("Config ignorer", "packet", fmt.Sprintf("%#v", event))
+	c.Log.Debug("Config ignorer", "packet", fmt.Sprintf("%#v", e))
 	return
 }
 
@@ -48,6 +47,7 @@ func (c *ConfigIgnorer) OnKeepAlive(packet *v1_21_8.ConfigurationToClientPacketK
 	return
 }
 
+// IgnoreConfig acknowledges configuration packets on the connection and transitions it to the Play state once configuration is complete.
 func IgnoreConfig(c *proto.Conn) (err error) {
 	ci := &ConfigIgnorer{c}
 	ci.RegisterCritical(ci.Default)
@@ -56,7 +56,7 @@ func IgnoreConfig(c *proto.Conn) (err error) {
 	ci.RegisterUntilLatest(ci.OnPing)
 	ci.RegisterUntilLatest(ci.OnKeepAlive)
 
-	err = ci.Start()
+	err = ci.StartConn()
 	if err != nil {
 		err = errors.Join(err, errors.New("failed to ignore config"))
 	}

mc/client/dns.go

@@ -0,0 +1,80 @@
+package client
+
+import (
+	"context"
+	"errors"
+	"net"
+	"strconv"
+	"strings"
+	"time"
+)
+
+type DNSCheckFunc func(addr string) error
+
+// DoDNSChecked resolves a DNS name to an IP address
+// It should resolve a minecraft compatible address into something net.Dial
+// It also optionally accepts a function to "check" the address
+func DoDNSChecked(ctx context.Context, in string, f DNSCheckFunc) (connectTo string, host string, portN uint16, err error) {
+	if f == nil {
+		f = func(addr string) error { return nil }
+	}
+	if ctx == nil {
+		ctx = context.Background()
+	}
+
+	// https://mcsrc.dev/1/26.1-pre-1/net/minecraft/client/multiplayer/resolver/ServerAddress#L34
+	host, port, err := net.SplitHostPort(in)
+	if err != nil {
+		if addrErr, ok := errors.AsType[*net.AddrError](err); ok && addrErr.Err == "missing port in address" {
+			err = nil
+			host = in
+			port = "25565"
+		} else {
+			return
+		}
+	}
+	porti, err := strconv.Atoi(port)
+	if err != nil {
+		return
+	}
+
+	err = f(host)
+	if err != nil {
+		return
+	}
+	portN = uint16(porti)
+	outIP, err := net.ResolveIPAddr("ip", host)
+	if err != nil {
+		return
+	}
+	err = f(outIP.String())
+	if err != nil {
+		return
+	}
+	connectTo = outIP.String() + ":" + port
+	if portN != 25565 {
+		return
+	}
+	ctx, cancel := context.WithTimeout(ctx, time.Second) // otherwise this takes 10+ seconds
+	defer cancel()
+
+	r := &net.Resolver{}
+
+	_, srvs, _ := r.LookupSRV(ctx, "minecraft", "tcp", host)
+	if len(srvs) == 0 {
+
+		return
+	}
+	host = strings.TrimSuffix(srvs[0].Target, ".")
+	portN = srvs[0].Port
+	outIP, err = net.ResolveIPAddr("ip", host)
+	if err != nil {
+		return
+	}
+	err = f(outIP.String())
+	if err != nil {
+		return
+	}
+	connectTo = outIP.String() + ":" + port
+	return
+}

mc/client/dns_test.go

@@ -15,7 +15,7 @@ func TestDoDNS(t *testing.T) {
 	}
 	for _, c := range cases {
 		t.Logf("Testing %s", c.Input)
-		_, host, portN, err := DoDns(c.Input)
+		_, host, portN, err := DoDNSChecked(nil, c.Input, nil)
 		if err != nil {
 			t.Error(err)
 			continue

mc/client/handshake_packet.go

@@ -4,15 +4,17 @@ import (
 	"net"
 	"strconv"
 
-	"github.com/admin-else/strom/proto"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto"
-	"github.com/admin-else/strom/proto_base"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_base"
-	"github.com/admin-else/strom/proto_generated/v1_21_8"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_21_8"
 )
 
+// MakeHandshakePacket creates a handshake packet using the connection's remote address as the server host.
 func MakeHandshakePacket(c *proto.Conn, nextState proto_base.State) (p *v1_21_8.HandshakingToServerPacketSetProtocol, err error) {
 	return MakeHandshakePacketAddr(c, nextState, c.RemoteAddr().String())
 }
 
+// MakeHandshakePacketAddr gets a custom addr
 func MakeHandshakePacketAddr(s *proto.Conn, nextState proto_base.State, addr string) (p *v1_21_8.HandshakingToServerPacketSetProtocol, err error) {
 	p = &v1_21_8.HandshakingToServerPacketSetProtocol{NextState: int32(nextState), ProtocolVersion: s.ProtocolVersion}
 	var portStr string

mc/client/login.go

@@ -0,0 +1,337 @@
+package client
+
+import (
+	"context"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/json"
+	"errors"
+	"net"
+
+	"git.anygate.cloud/anygatecloud/strom/mc/api"
+	"git.anygate.cloud/anygatecloud/strom/mc/crypto"
+	"git.anygate.cloud/anygatecloud/strom/mc/event"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_base"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_16_5"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_21_8"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_8"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v26_2"
+	"git.anygate.cloud/anygatecloud/strom/mc/text"
+	"github.com/google/uuid"
+)
+
+type LoginClient struct {
+	*proto.Conn
+	Account    *api.Account
+	ServerHost string
+	ServerPort uint16
+
+	GivenAccount *v1_21_8.LoginToClientPacketSuccess
+}
+
+var (
+	NoTokenErr          = errors.New("the account has no token so we cant join online servers")
+	BadPublicKeyTypeErr = errors.New("the public key is not rsa")
+	FailedToLoginErr    = errors.New("failed to login")
+)
+
+type KickedDuringLoginErr struct {
+	text.Component
+}
+
+func (k KickedDuringLoginErr) Error() string {
+	return k.String()
+}
+
+func (s *LoginClient) OnDefault(event event.Unhandled) (err error) {
+	if _, ok := event.Val.(proto_base.EncodeDecodeAble); !ok {
+		return
+	}
+	s.Log.Warn("unexpected packet during login client", "packet", event.Val)
+	return
+}
+
+func (s *LoginClient) OnClose(_ event.Close) (err error) {
+	return
+}
+
+func (s *LoginClient) OnCompress(packet *v1_8.LoginToClientPacketCompress) (err error) {
+	s.SetCompressionThreshold(packet.Threshold)
+	return
+}
+
+func (s *LoginClient) OnEncryptV1_8(packet *v1_8.LoginToClientPacketEncryptionBegin) (err error) {
+	return s.doEncrypt(packet.ServerId, packet.PublicKey, packet.VerifyToken, true)
+}
+
+func (s *LoginClient) OnEncrypt(packet *v1_21_8.LoginToClientPacketEncryptionBegin) (err error) {
+	return s.doEncrypt(packet.ServerId, packet.PublicKey, packet.VerifyToken, packet.ShouldAuthenticate)
+}
+
+func (s *LoginClient) doEncrypt(serverId string, publicKey []byte, verifyToken []byte, shouldAuthenticate bool) (err error) {
+	sharedSecret := make([]byte, 16)
+	_, _ = rand.Read(sharedSecret) //never fails
+
+	if shouldAuthenticate {
+		if s.Account.Ygg == "" {
+			err = NoTokenErr
+			return
+		}
+		hash := crypto.AuthDigest([]byte(serverId), sharedSecret, publicKey)
+		err = s.Account.JoinServer(hash)
+		if err != nil {
+			return
+		}
+	}
+
+	pubAny, err := x509.ParsePKIXPublicKey(publicKey)
+	if err != nil {
+		return
+	}
+	pub, ok := pubAny.(*rsa.PublicKey)
+	if !ok {
+		err = BadPublicKeyTypeErr
+		return
+	}
+	verifyTokenEnc, err := rsa.EncryptPKCS1v15(rand.Reader, pub, verifyToken)
+	if err != nil {
+		return
+	}
+
+	sharedSecretEnc, err := rsa.EncryptPKCS1v15(rand.Reader, pub, sharedSecret)
+	if err != nil {
+		return
+	}
+	err = s.Send(&v1_21_8.LoginToServerPacketEncryptionBegin{SharedSecret: sharedSecretEnc, VerifyToken: verifyTokenEnc})
+	if err != nil {
+		return
+	}
+	err = s.SetSecret(sharedSecret)
+	return
+}
+
+func (s *LoginClient) OnDisconnect(packet *v1_8.LoginToClientPacketDisconnect) (err error) {
+	var reason text.Component
+	err = json.Unmarshal([]byte(packet.Reason), &reason)
+	if err != nil {
+		return
+	}
+	err = KickedDuringLoginErr{reason}
+	return
+}
+
+func (s *LoginClient) OnSuccessV1_8(success *v1_8.LoginToClientPacketSuccess) (err error) {
+	s.GivenAccount = &v1_21_8.LoginToClientPacketSuccess{
+		Uuid:     uuid.MustParse(success.Uuid),
+		Username: success.Username,
+	}
+	s.SetState(proto_base.Play)
+	err = event.HandlerDoneErr{}
+	return
+}
+
+func (s *LoginClient) OnSuccess(success *v1_21_8.LoginToClientPacketSuccess) (err error) {
+	s.GivenAccount = success
+	if s.ProtocolVersion >= 764 {
+		err = s.Send(&v1_21_8.LoginToServerPacketLoginAcknowledged{})
+		if err != nil {
+			return
+		}
+		s.SetState(proto_base.Configuration)
+	} else {
+		s.SetState(proto_base.Play)
+	}
+	err = event.HandlerDoneErr{}
+	return
+}
+
+func (s *LoginClient) OnSuccess26_2(success *v26_2.LoginToClientPacketSuccess) (err error) {
+	return s.OnSuccess(&v1_21_8.LoginToClientPacketSuccess{
+		Uuid:       success.Uuid,
+		Username:   success.Username,
+		Properties: success.Properties,
+	})
+}
+
+func (s *LoginClient) OnSuccess1_16_5(success *v1_16_5.LoginToClientPacketSuccess) (err error) {
+	return s.OnSuccess(&v1_21_8.LoginToClientPacketSuccess{
+		Uuid:     success.Uuid,
+		Username: success.Username,
+	})
+}
+
+func (s *LoginClient) OnStart() (err error) {
+	return
+}
+
+// LoginRaw performs the login handshake on an already-established connection without DNS resolution or configuration handling.
+// The handshake address is derived from the connection's RemoteAddr.
+func LoginRaw(c *proto.Conn, account *api.Account) (err error) {
+	return LoginRawAddr(c, account, "")
+}
+
+// LoginRawAddr performs the login handshake on an already-established connection using the given address for the handshake packet.
+// If hostAddr is empty, the handshake address is derived from the connection's RemoteAddr.
+func LoginRawAddr(c *proto.Conn, account *api.Account, hostAddr string) (err error) {
+	lc := &LoginClient{
+		Conn:    c,
+		Account: account,
+	}
+	lc.RegisterCritical(lc.OnDefault)
+	lc.RegisterCritical(lc.OnClose)
+	lc.RegisterUntil("26.2", lc.OnCompress, lc.OnDisconnect, lc.OnEncrypt)
+	lc.RegisterUntil("26.1", lc.OnSuccess)
+	lc.RegisterUntilLatest(lc.OnSuccess26_2)
+	lc.RegisterUntil("1.14.4", lc.OnEncryptV1_8, lc.OnSuccessV1_8)
+	lc.RegisterUntil("1.16.5", lc.OnSuccess1_16_5)
+
+	var p proto_base.EncodeDecodeAble
+	if hostAddr != "" {
+		p, err = MakeHandshakePacketAddr(lc.Conn, proto_base.Login, hostAddr)
+	} else {
+		p, err = MakeHandshakePacket(lc.Conn, proto_base.Login)
+	}
+	if err != nil {
+		return
+	}
+
+	err = lc.Send(p)
+	if err != nil {
+		return
+	}
+	lc.SetState(proto_base.Login)
+	if lc.Conn.ProtocolVersion < 759 {
+		err = lc.Send(&v1_8.LoginToServerPacketLoginStart{Username: lc.Account.Name})
+	} else {
+		err = lc.Send(&v1_21_8.LoginToServerPacketLoginStart{Username: lc.Account.Name, PlayerUUID: lc.Account.Uuid})
+	}
+
+	err = lc.StartConn()
+	if err != nil {
+		err = errors.Join(FailedToLoginErr, err)
+	}
+	return
+}
+
+// WithoutDns returns a login setting that disables SRV DNS resolution during login.
+func WithoutDns() func(ls *loginSettings) {
+	return func(ls *loginSettings) {
+		ls.NoDns = true
+	}
+}
+
+// WithContext returns a login setting that sets the context used for the connection dial and DNS resolution.
+func WithContext(ctx context.Context) func(ls *loginSettings) {
+	return func(ls *loginSettings) {
+		ls.Ctx = ctx
+	}
+}
+
+// WithVersion returns a login setting that forces a specific Minecraft version string for the connection.
+func WithVersion(version string) func(ls *loginSettings) {
+	return func(ls *loginSettings) {
+		ls.Version = version
+	}
+}
+
+func WithIgnoreConfig() func(ls *loginSettings) {
+	return func(ls *loginSettings) {
+		ls.IgnoreConfig = true
+	}
+}
+
+// DialFunc is a context-aware dial function used by Login to establish a TCP connection.
+type DialFunc func(ctx context.Context, network, addr string) (net.Conn, error)
+
+// WithConn returns a login setting that uses an already-established net.Conn instead of dialling.
+// WithVersion must also be set; auto-detection is not possible with a pre-established connection.
+func WithConn(conn net.Conn) func(ls *loginSettings) {
+	return func(ls *loginSettings) {
+		ls.Conn = conn
+	}
+}
+
+// WithDialer returns a login setting that uses the given dial function instead of net.Dialer.
+// Auto version detection via status ping is still supported when no explicit version is set.
+func WithDialer(d DialFunc) func(ls *loginSettings) {
+	return func(ls *loginSettings) {
+		ls.Dialer = d
+	}
+}
+
+var (
+	ErrWithConnRequiresVersion = errors.New("WithVersion is required when using WithConn")
+	ErrWithConnNoStatus        = errors.New("auto version detection is not supported with WithConn")
+)
+
+type loginSettings struct {
+	NoDns        bool
+	Ctx          context.Context
+	Version      string
+	IgnoreConfig bool
+	Conn         net.Conn
+	Dialer       DialFunc
+}
+
+// Login resolves the address with SRV DNS, connects, performs the login handshake, and handles the configuration phase, returning an authenticated connection ready for play.
+func Login(connectTo string, account *api.Account, settings ...func(ls *loginSettings)) (c *proto.Conn, err error) {
+	ls := &loginSettings{}
+
+	for _, setting := range settings {
+		setting(ls)
+	}
+
+	hostAddr := connectTo
+
+	if ls.Conn != nil {
+		if ls.Version == "" {
+			return nil, ErrWithConnRequiresVersion
+		}
+		c, err = ConnectWithConn(ls.Ctx, ls.Conn, ls.Version)
+		if err != nil {
+			return
+		}
+	} else if ls.Dialer != nil {
+		if ls.Version == "" {
+			return nil, ErrWithConnRequiresVersion
+		}
+		if !ls.NoDns {
+			connectTo, _, _, err = DoDNSChecked(ls.Ctx, connectTo, nil)
+			if err != nil {
+				return
+			}
+		}
+		var conn net.Conn
+		conn, err = ls.Dialer(ls.Ctx, "tcp", connectTo)
+		if err != nil {
+			return
+		}
+		c, err = ConnectWithConn(ls.Ctx, conn, ls.Version)
+		if err != nil {
+			conn.Close()
+			return
+		}
+	} else {
+		if !ls.NoDns {
+			connectTo, _, _, err = DoDNSChecked(ls.Ctx, connectTo, nil)
+			if err != nil {
+				return
+			}
+		}
+		c, err = Connect(ls.Ctx, connectTo, ls.Version)
+		if err != nil {
+			return
+		}
+	}
+
+	err = LoginRawAddr(c, account, hostAddr)
+	if err != nil {
+		return
+	}
+	if !ls.IgnoreConfig && c.ProtocolVersion >= 764 {
+		err = IgnoreConfig(c)
+	}
+	return
+}

mc/client/login_test.go

@@ -0,0 +1,55 @@
+package client_test
+
+import (
+	"reflect"
+	"testing"
+
+	"git.anygate.cloud/anygatecloud/strom/mc/data"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_base"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_21_8"
+)
+
+func assertClientSendConvertible(t *testing.T, srcType reflect.Type, name string, state proto_base.State, direction proto_base.Direction, targetVersion int32) {
+	t.Helper()
+	targetInfo, ok := proto.LookupPacketInfoByNameProtocolVersionStateAndDirection(name, targetVersion, state, direction)
+	if !ok {
+		t.Fatalf("packet %s not found for version %d", name, targetVersion)
+	}
+	targetType := reflect.TypeOf(targetInfo.Type)
+	if !proto.SmartConvertibleTo(srcType, targetType) {
+		t.Fatalf("%s is not smart-convertible from v1_21_8 to version %d", name, targetVersion)
+	}
+}
+
+func assertClientReceiveConvertible(t *testing.T, dstType reflect.Type, name string, state proto_base.State, direction proto_base.Direction, targetVersion int32) {
+	t.Helper()
+	targetInfo, ok := proto.LookupPacketInfoByNameProtocolVersionStateAndDirection(name, targetVersion, state, direction)
+	if !ok {
+		t.Fatalf("packet %s not found for version %d", name, targetVersion)
+	}
+	targetType := reflect.TypeOf(targetInfo.Type)
+	if !proto.SmartConvertibleTo(targetType, dstType) {
+		t.Fatalf("%s is not smart-convertible from version %d to v1_21_8", name, targetVersion)
+	}
+}
+
+func TestLoginClientSendAssumptions(t *testing.T) {
+	v26_1Version := data.MustLookupProtocolVersion("26.1")
+
+	// Packets sent by LoginClient as v1_21_8.
+	assertClientSendConvertible(t, reflect.TypeFor[*v1_21_8.HandshakingToServerPacketSetProtocol](), "set_protocol", proto_base.Handshaking, proto_base.ToServer, v26_1Version)
+	assertClientSendConvertible(t, reflect.TypeFor[*v1_21_8.LoginToServerPacketLoginStart](), "login_start", proto_base.Login, proto_base.ToServer, v26_1Version)
+	assertClientSendConvertible(t, reflect.TypeFor[*v1_21_8.LoginToServerPacketLoginAcknowledged](), "login_acknowledged", proto_base.Login, proto_base.ToServer, v26_1Version)
+	assertClientSendConvertible(t, reflect.TypeFor[*v1_21_8.LoginToServerPacketEncryptionBegin](), "encryption_begin", proto_base.Login, proto_base.ToServer, v26_1Version)
+}
+
+func TestLoginClientReceiveAssumptions(t *testing.T) {
+	v26_1Version := data.MustLookupProtocolVersion("26.1")
+
+	// Packets received by LoginClient via RegisterCriticalUntilLatest.
+	// login_success is excluded because 26.2 is not convertible.
+	assertClientReceiveConvertible(t, reflect.TypeFor[*v1_21_8.LoginToClientPacketCompress](), "compress", proto_base.Login, proto_base.ToClient, v26_1Version)
+	assertClientReceiveConvertible(t, reflect.TypeFor[*v1_21_8.LoginToClientPacketEncryptionBegin](), "encryption_begin", proto_base.Login, proto_base.ToClient, v26_1Version)
+	assertClientReceiveConvertible(t, reflect.TypeFor[*v1_21_8.LoginToClientPacketDisconnect](), "disconnect", proto_base.Login, proto_base.ToClient, v26_1Version)
+}

mc/client/status.go

@@ -0,0 +1,96 @@
+package client
+
+import (
+	"context"
+	"encoding/json"
+	"time"
+
+	"git.anygate.cloud/anygatecloud/strom/mc/event"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_base"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_21_8"
+	"git.anygate.cloud/anygatecloud/strom/mc/proto_generated/v1_8"
+	"git.anygate.cloud/anygatecloud/strom/mc/server"
+)
+
+type StatusClient struct {
+	*proto.Conn
+	Status                        string
+	PingSendTime, PingReceiveTime time.Time
+	DoPingRoundTripTime           bool
+}
+
+func (s *StatusClient) OnStatus(p *v1_8.StatusToClientPacketServerInfo) (err error) {
+	s.Status = p.Response
+	s.PingSendTime = time.Now()
+	if s.DoPingRoundTripTime {
+		err = s.Send(&v1_21_8.StatusToServerPacketPing{Time: s.PingSendTime.UnixMilli()})
+	} else {
+		err = event.HandlerDoneErr{}
+	}
+	return
+}
+
+func (s *StatusClient) OnPong(p *v1_8.StatusToClientPacketPing) (err error) {
+	s.PingReceiveTime = time.Now()
+	err = event.HandlerDoneErr{}
+	return
+}
+
+// StatusRaw returns a StatusClient that is not connected to a server.
+// So ignore the resource leak warning. And maybe attach a warn ignore comment.
+// It does not resolve SRV records.
+func StatusRaw(ctx context.Context, addr string) (s *StatusClient, err error) {
+	return StatusRawWithVersion(ctx, addr, "1.21.8")
+}
+
+// StatusRawWithVersion is like StatusRaw but uses the given Minecraft version for the handshake.
+func StatusRawWithVersion(ctx context.Context, addr, version string) (s *StatusClient, err error) {
+	c, err := ConnectVersionLess(ctx, addr)
+	if err != nil {
+		return
+	}
+	defer c.Close()
+	err = c.SetVersion(version)
+	if err != nil {
+		return
+	}
+	s = &StatusClient{
+		Conn: c,
+	}
+	s.RegisterUntil("26.2", s.OnStatus, s.OnPong) 
+
+	p, err := MakeHandshakePacketAddr(s.Conn, proto_base.Status, addr)
+	if err != nil {
+		return
+	}
+	err = s.Send(p)
+	if err != nil {
+		return
+	}
+	s.SetState(proto_base.Status)
+	err = s.Send(&v1_21_8.StatusToServerPacketPingStart{})
+
+	err = s.StartConn()
+	return
+}
+
+// StatusNoDns is like Status but does not resolve SRV records.
+func StatusNoDns(ctx context.Context, addr string) (status server.StatusResponse, err error) {
+	s, err := StatusRaw(ctx, addr)
+	if err != nil {
+		return
+	}
+	defer s.Close()
+	err = json.Unmarshal([]byte(s.Status), &status)
+	return
+}
+
+// Status resolves the status of the minecraft server at the given address.
+func Status(ctx context.Context, addr string) (status server.StatusResponse, err error) {
+	addr, _, _, err = DoDNSChecked(ctx, addr, nil)
+	if err != nil {
+		return
+	}
+	return StatusNoDns(ctx, addr)
+}

mc/crypto/cfb8.go

@@ -28,6 +28,7 @@ package crypto
 import (
 	"crypto/cipher"
 	"crypto/subtle"
+	"sync"
 	"unsafe"
 )
 
@@ -37,12 +38,15 @@ type CFB8 struct {
 	ivPos     int
 	iv        []byte
 	de        bool
+	mutex     sync.Mutex
 }
 
+// NewCFB8Decrypt creates a new CFB8 stream cipher in decrypt mode.
 func NewCFB8Decrypt(c cipher.Block, iv []byte) *CFB8 {
 	return newCFB8(c, iv, true)
 }
 
+// NewCFB8Encrypt creates a new CFB8 stream cipher in encrypt mode.
 func NewCFB8Encrypt(c cipher.Block, iv []byte) *CFB8 {
 	return newCFB8(c, iv, false)
 }
@@ -59,6 +63,8 @@ func newCFB8(c cipher.Block, iv []byte, de bool) *CFB8 {
 }
 
 func (cf *CFB8) XORKeyStream(dst, src []byte) {
+	cf.mutex.Lock()
+	defer cf.mutex.Unlock()
 	if len(src) == 0 {
 		return
 	}

mc/crypto/offline.go

@@ -6,9 +6,9 @@ import (
 	"github.com/google/uuid"
 )
 
-// UUIDv3 Variation of google.uuid.NewHash
+// uuidV3 Variation of google.uuid.NewHash
 // We need this because we want a 14-byte namespace and Google forces 16
-func UUIDv3(space []byte, data []byte) uuid.UUID {
+func uuidV3(space []byte, data []byte) uuid.UUID {
 	h := md5.New()
 	h.Reset()
 	h.Write(space) //nolint:errcheck
@@ -21,6 +21,7 @@ func UUIDv3(space []byte, data []byte) uuid.UUID {
 	return u
 }
 
+// FromOfflinePlayer generates a UUID for an offline-mode (cracked) player from their display name.
 func FromOfflinePlayer(displayName string) uuid.UUID {
-	return UUIDv3([]byte("OfflinePlayer:"), []byte(displayName))
+	return uuidV3([]byte("OfflinePlayer:"), []byte(displayName))
 }

mc/data/biomes.go

@@ -0,0 +1,67 @@
+package data
+
+import "errors"
+
+// [
+//
+//	{
+//	  "id": 0,
+//	  "name": "badlands",
+//	  "category": "mesa",
+//	  "temperature": 2.0,
+//	  "has_precipitation": false,
+//	  "dimension": "overworld",
+//	  "displayName": "Badlands",
+//	  "color": 7254527
+//	},
+
+type Biome struct {
+	Id               int32
+	Name             string
+	Category         string
+	Temperature      float64
+	HasPrecipitation bool
+	Dimension        string
+	DisplayName      string
+	Color            int
+}
+
+var BiomesCache = make(map[string][]*Biome)
+
+// BiomesForVersion returns the biome definitions for the given Minecraft version, caching them after the first load.
+func BiomesForVersion(v string) (ret []*Biome) {
+	var ok bool
+	if ret, ok = BiomesCache[v]; ok {
+		return
+	}
+	var b []*Biome
+	must(LoadVersionedJson(v, "biomes", &b))
+	BiomesCache[v] = b
+	return b
+}
+
+// LookupBiomeById returns the biome with the given numeric ID in the given version.
+func LookupBiomeById(version string, id int32) (biome *Biome, ok bool) {
+	for _, b := range BiomesForVersion(version) {
+		if b.Id == id {
+			biome = b
+			ok = true
+			return
+		}
+	}
+	return
+}
+
+var UnknownBiomeNameErr = errors.New("unknown biome Name")
+
+// LookupBiomeByName returns the biome with the given name in the given version.
+func LookupBiomeByName(version string, name string) (biome *Biome, ok bool) {
+	for _, b := range BiomesForVersion(version) {
+		if b.Name == name {
+			biome = b
+			ok = true
+			return
+		}
+	}
+	return
+}

mc/data/biomes_test.go

@@ -3,7 +3,7 @@ package data_test
 import (
 	"testing"
 
-	"github.com/admin-else/strom/data"
+	"git.anygate.cloud/anygatecloud/strom/mc/data"
 )
 
 func TestLookupBiomeById(t *testing.T) {

mc/data/blocks.go

@@ -2,6 +2,10 @@ package data
 
 import (
 	"errors"
+	"slices"
+	"strconv"
+
+	"git.anygate.cloud/anygatecloud/strom/mc/util"
 )
 
 //  {
@@ -47,12 +51,15 @@ type Block struct {
 type BlockState struct {
 	Name      string
 	Type      string
+	MinValue  int32 // this is generated on load and used for state value calculations
 	NumValues int32 `json:"num_values"`
 	Values    []string
 }
 
 var BlocksCache = make(map[string][]*Block)
+var BlocksCacheIdMap = make(map[string]map[int32]*Block)
 
+// BlocksForVersion returns the block definitions for the given Minecraft version, caching them after the first load.
 func BlocksForVersion(v string) (ret []*Block) {
 	var ok bool
 	if ret, ok = BlocksCache[v]; ok {
@@ -61,26 +68,66 @@ func BlocksForVersion(v string) (ret []*Block) {
 	var b []*Block
 	must(LoadVersionedJson(v, "blocks", &b))
 	BlocksCache[v] = b
+	for _, block := range b {
+		for i, state := range block.States {
+			if state.Type != "int" {
+				continue
+			}
+			values := make([]int32, state.NumValues)
+			for j, stateValue := range state.Values {
+				n := util.MustT(strconv.Atoi(stateValue))
+				values[j] = int32(n)
+			}
+			block.States[i].MinValue = slices.Min(values)
+		}
+	}
+
 	return b
 }
 
+// LookupBlockByStateId returns the block for the given global palette state ID in the given version.
 func LookupBlockByStateId(version string, stateId int32) (block *Block, ok bool) {
+	idmap, found := BlocksCacheIdMap[version]
+	if !found {
+		idmap = make(map[int32]*Block)
+		for _, b := range BlocksForVersion(version) {
+			for i := range b.MaxStateId - b.MinStateId + 1 {
+				idmap[b.MinStateId+i] = b
+			}
+		}
+		BlocksCacheIdMap[version] = idmap
+	}
+	block, ok = idmap[stateId]
+	return
+}
+
+var UnknownBlockNameErr = errors.New("unknown block Name")
+
+// LookupBlockByName returns the block with the given name in the given version.
+func LookupBlockByName(version string, name string) (block *Block, ok bool) {
 	for _, b := range BlocksForVersion(version) {
-		if b.MinStateId <= stateId && stateId <= b.MaxStateId {
+		if b.Name == name {
 			block = b
 			ok = true
-			return
 		}
 	}
 	return
 }
 
-func LookupBlockByName(version string, stateId int32) (block *Block, ok bool) {
+// StateIdFromBlocKAndStateMap returns the global palette state ID for the given block name and state property map in the given version.
-	for _, b := range BlocksForVersion(version) {
+func StateIdFromBlocKAndStateMap(version string, name string, stateMap map[string]string) (stateId int32, err error) {
-		if b.MinStateId <= stateId && stateId <= b.MaxStateId {
+	b, ok := LookupBlockByName(version, name)
-			block = b
+	if !ok {
-			ok = true
+		err = BlockNotFoundErr
-		}
+		return
+	}
+	if stateMap == nil {
+		stateId = b.DefaultState
+	} else {
+		stateId, err = b.IdFromStateMap(stateMap)
+	}
+	if b.MinStateId > stateId || b.MaxStateId < stateId {
+		err = BlockStateOutOfRangeErr
 	}
 	return
 }
@@ -92,7 +139,8 @@ var BadBlockStateTypeErr = errors.New("bad block state type")
 var BadEnumErr = errors.New("bad enum")
 var SupplyAllStatesErr = errors.New("supply all states")
 
-func FromBlockState(version string, stateId int32) (b *Block, stateData map[string]any, err error) {
+// FromBlockState converts a global palette state ID back into a block definition and a map of state properties.
+func FromBlockState(version string, stateId int32) (b *Block, stateData map[string]string, err error) {
 	b, ok := LookupBlockByStateId(version, stateId)
 	if !ok {
 		err = BlockNotFoundErr
@@ -101,19 +149,17 @@ func FromBlockState(version string, stateId int32) (b *Block, stateData map[stri
 	return
 }
 
-// TODO: mc stores these as strings so we will do the same
+func mcDataBlockStateTypeParse(n int32, s *BlockState) (v string, err error) {
-
-func mcDataBlockStateTypeParse(n int32, s *BlockState) (v any, err error) {
 	switch s.Type {
 	case "int":
-		v = n
+		v = strconv.Itoa(int(n))
 	case "enum":
 		v = s.Values[n]
 	case "bool":
 		if n == 0 { // MOJANK: 0 is true, 1 is false
-			v = true
+			v = "true"
 		} else if n == 1 {
-			v = false
+			v = "false"
 		} else {
 			err = InvalidBoolValueErr
 		}
@@ -123,35 +169,32 @@ func mcDataBlockStateTypeParse(n int32, s *BlockState) (v any, err error) {
 	return
 }
 
-func mcDataBlockStateTypeSerialize(v any, s *BlockState) (n int32, err error) {
+func mcDataBlockStateTypeSerialize(v string, s *BlockState) (n int32, err error) {
-	switch t := v.(type) {
+	if v == "true" {
-	case int32:
+		return 0, nil
-		n = t
-	case bool:
-		if t {
-			n = 0
-		} else {
-			n = 1
-		}
-	case string:
-		for i, enumValue := range s.Values {
-			if enumValue == t {
-				return int32(i), nil
-			}
-		}
-		err = BadEnumErr
-	default:
-		err = BadBlockStateTypeErr
 	}
+	if v == "false" {
+		return 1, nil
+	}
+	n1, errMabye := strconv.Atoi(v)
+	if errMabye == nil {
+		return int32(n1) - s.MinValue, nil
+	}
+	for i, enumValue := range s.Values {
+		if enumValue == v {
+			return int32(i), nil
+		}
+	}
+	err = BadEnumErr
 	return
 }
 
-func (b *Block) StateMapFromId(stateId int32) (ret map[string]any, err error) {
+func (b *Block) StateMapFromId(stateId int32) (ret map[string]string, err error) {
 	if stateId < b.MinStateId || stateId > b.MaxStateId {
 		err = BlockStateOutOfRangeErr
 		return
 	}
-	ret = make(map[string]any)
+	ret = make(map[string]string)
 	stateId -= b.MinStateId
 
 	a := int32(1)
@@ -166,7 +209,7 @@ func (b *Block) StateMapFromId(stateId int32) (ret map[string]any, err error) {
 	return
 }
 
-func (b *Block) IdFromStateMap(m map[string]any) (ret int32, err error) {
+func (b *Block) IdFromStateMap(m map[string]string) (ret int32, err error) {
 	a := int32(1)
 	for i := range len(b.States) {
 		s := b.States[len(b.States)-1-i]

mc/data/blocks_test.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/admin-else/strom/data"
+	"git.anygate.cloud/anygatecloud/strom/mc/data"
 )
 
 func TestLookupBlockByStateId(t *testing.T) {
@@ -32,3 +32,11 @@ func TestBlockStates(t *testing.T) {
 		t.Fatal("state id mismatch")
 	}
 }
+
+func TestBlockStateOutOfRangeBug(t *testing.T) {
+	id, err := data.StateIdFromBlocKAndStateMap("1.21.11", "wildflowers", map[string]string{"facing": "east", "flower_amount": "4"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Logf("State id: %d", id)
+}

mc/data/copy_local_minecraft_data.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/sh
+set -xeuo pipefail
+
+# Copy minecraft-data from the local AnyGate checkout instead of cloning upstream.
+# This is used when upstream does not yet have the target version or when we want
+# to test local changes before pushing.
+
+LOCAL_MINECRAFT_DATA="${LOCAL_MINECRAFT_DATA:-$HOME/src/anygate/minecraft-data}"
+
+cd "$(dirname "$0")"
+
+rm -rf minecraft-data/
+mkdir -p minecraft-data/pc
+
+cp "$LOCAL_MINECRAFT_DATA/data/dataPaths.json" minecraft-data/
+
+copy-mc() {
+  cp -r "$LOCAL_MINECRAFT_DATA/data/pc/$1" minecraft-data/pc
+}
+
+copy-mc common
+
+copy-mc 1.21.8
+copy-mc 1.21.9
+copy-mc 1.21.11
+copy-mc 26.1
+copy-mc 26.2

mc/data/data.go

@@ -0,0 +1,42 @@
+package data
+
+import (
+	"embed"
+	"encoding/json"
+	"errors"
+	"fmt"
+)
+
+//go:generate ./download_minecraft_data.sh
+
+//go:embed minecraft-data/pc minecraft-data/dataPaths.json
+var MinecraftData embed.FS
+
+// LoadJson reads a JSON file from the embedded minecraft-data FS and unmarshals it into data.
+func LoadJson(path string, data any) (err error) {
+	b, err := MinecraftData.ReadFile(path)
+	if err != nil {
+		return
+	}
+	err = json.Unmarshal(b, data)
+	return
+}
+
+// LoadVersionedJson loads a version-specific JSON data file from the embedded minecraft-data FS and unmarshals it into data.
+func LoadVersionedJson(version, dataName string, data any) (err error) {
+	b, err := MinecraftData.ReadFile("minecraft-data/" + Paths.Data[version][dataName] + "/" + dataName + ".json")
+	if err != nil {
+		// If you get this error, you need to probably need to update the download script
+		return fmt.Errorf("minecraft-data/%s/%s/%s.json: %w", version, Paths.Data[version][dataName], dataName, err)
+	}
+	err = json.Unmarshal(b, data)
+	return
+}
+
+var UnknownMinecraftVersionError = errors.New("unknown minecraft version")
+
+func must(err error) {
+	if err != nil {
+		panic(err)
+	}
+}

mc/data/data_paths.go

@@ -9,5 +9,5 @@ var Paths struct {
 }
 
 func init() {
-	must(LoadJson("minecraft-data/data/dataPaths.json", &Paths))
+	must(LoadJson("minecraft-data/dataPaths.json", &Paths))
 }

mc/data/download_minecraft_data.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/sh
+set -xeuo pipefail
+
+# Go get / install does not clone git submodules so we have to do it like this
+
+cd "$(dirname "$0")"
+
+rm -rf minecraft-data/
+git clone --depth 1 git@github.com:admin-else/minecraft-data.git
+mv minecraft-data minecraft-data-untrimmed
+
+mkdir minecraft-data
+mkdir minecraft-data/pc
+
+mv minecraft-data-untrimmed/data/dataPaths.json minecraft-data
+
+copy-mc() {
+  mv minecraft-data-untrimmed/data/pc/$1 minecraft-data/pc
+}
+
+copy-mc common
+
+# Legacy versions
+copy-mc 1.8
+copy-mc 1.12.2
+copy-mc 1.14.4
+copy-mc 1.16.5
+
+# Modern versions
+copy-mc 1.21.8
+copy-mc 1.21.9
+copy-mc 1.21.11
+copy-mc 26.1
+copy-mc 26.2
+
+rm -rf minecraft-data-untrimmed

mc/data/item.go

@@ -1,5 +1,7 @@
 package data
 
+import "sync"
+
 //   {
 //    "id": 2,
 //    "name": "granite",
@@ -15,18 +17,26 @@ type Item struct {
 }
 
 var ItemsCache = make(map[string][]*Item)
+var ItemsCacheMutex = &sync.RWMutex{}
 
+// ItemsForVersion returns the item definitions for the given Minecraft version, caching them after the first load.
 func ItemsForVersion(v string) (ret []*Item) {
 	var ok bool
+	ItemsCacheMutex.RLock()
 	if ret, ok = ItemsCache[v]; ok {
+		ItemsCacheMutex.RUnlock()
 		return
 	}
+	ItemsCacheMutex.RUnlock()
 	var b []*Item
 	must(LoadVersionedJson(v, "items", &b))
+	ItemsCacheMutex.Lock()
 	ItemsCache[v] = b
+	ItemsCacheMutex.Unlock()
 	return b
 }
 
+// LookupItemById returns the item with the given numeric ID in the given version.
 func LookupItemById(version string, id int32) (item *Item, ok bool) {
 	for _, i := range ItemsForVersion(version) {
 		if i.Id == id {
@@ -38,6 +48,7 @@ func LookupItemById(version string, id int32) (item *Item, ok bool) {
 	return
 }
 
+// LookupItemByName returns the item with the given name in the given version.
 func LookupItemByName(version string, name string) (item *Item, ok bool) {
 	for _, i := range ItemsForVersion(version) {
 		if i.Name == name {

mc/data/minecraft-data/pc/1.12.2/version.json

@@ -0,0 +1,5 @@
+{
+  "minecraftVersion": "1.12.2",
+  "version":340,
+  "majorVersion": "1.12"
+}

mc/data/minecraft-data/pc/1.14.4/biomes.json

@@ -0,0 +1,953 @@
+[
+  {
+    "id": 0,
+    "name": "ocean",
+    "category": "ocean",
+    "temperature": 0.5,
+    "precipitation": "rain",
+    "depth": -1,
+    "dimension": "overworld",
+    "displayName": "Ocean",
+    "color": 112,
+    "rainfall": 0.5
+  },
+  {
+    "id": 1,
+    "name": "plains",
+    "category": "plains",
+    "temperature": 0.8,
+    "precipitation": "rain",
+    "depth": 0.125,
+    "dimension": "overworld",
+    "displayName": "Plains",
+    "color": 9286496,
+    "rainfall": 0.4,
+    "child": 129
+  },
+  {
+    "id": 2,
+    "name": "desert",
+    "category": "desert",
+    "temperature": 2,
+    "precipitation": "none",
+    "depth": 0.125,
+    "dimension": "overworld",
+    "displayName": "Desert",
+    "color": 16421912,
+    "rainfall": 0,
+    "child": 130
+  },
+  {
+    "id": 3,
+    "name": "mountains",
+    "category": "extreme_hills",
+    "temperature": 0.2,
+    "precipitation": "rain",
+    "depth": 1,
+    "dimension": "overworld",
+    "displayName": "Mountains",
+    "color": 6316128,
+    "rainfall": 0.3,
+    "child": 131
+  },
+  {
+    "id": 4,
+    "name": "forest",
+    "category": "forest",
+    "temperature": 0.7,
+    "precipitation": "rain",
+    "depth": 0.1,
+    "dimension": "overworld",
+    "displayName": "Forest",
+    "color": 353825,
+    "rainfall": 0.8,
+    "child": 132
+  },
+  {
+    "id": 5,
+    "name": "taiga",
+    "category": "taiga",
+    "temperature": 0.25,
+    "precipitation": "rain",
+    "depth": 0.2,
+    "dimension": "overworld",
+    "displayName": "Taiga",
+    "color": 747097,
+    "rainfall": 0.8,
+    "child": 133
+  },
+  {
+    "id": 6,
+    "name": "swamp",
+    "category": "swamp",
+    "temperature": 0.8,
+    "precipitation": "rain",
+    "depth": -0.2,
+    "dimension": "overworld",
+    "displayName": "Swamp",
+    "color": 522674,
+    "rainfall": 0.9,
+    "child": 134
+  },
+  {
+    "id": 7,
+    "name": "river",
+    "category": "river",
+    "temperature": 0.5,
+    "precipitation": "rain",
+    "depth": -0.5,
+    "dimension": "overworld",
+    "displayName": "River",
+    "color": 255,
+    "rainfall": 0.5
+  },
+  {
+    "id": 8,
+    "name": "nether_wastes",
+    "category": "nether",
+    "temperature": 2,
+    "precipitation": "none",
+    "depth": 0.1,
+    "climates": [
+      {
+        "temperature": 0,
+        "humidity": 0,
+        "altitude": 0,
+        "weirdness": 0,
+        "offset": 0
+      }
+    ],
+    "dimension": "nether",
+    "displayName": "Nether Wastes",
+    "color": 12532539,
+    "rainfall": 0
+  },
+  {
+    "id": 9,
+    "name": "the_end",
+    "category": "the_end",
+    "temperature": 0.5,
+    "precipitation": "none",
+    "depth": 0.1,
+    "dimension": "end",
+    "displayName": "The End",
+    "color": 8421631,
+    "rainfall": 0.5
+  },
+  {
+    "id": 10,
+    "name": "frozen_ocean",
+    "category": "ocean",
+    "temperature": 0,
+    "precipitation": "snow",
+    "depth": -1,
+    "dimension": "overworld",
+    "displayName": "Frozen Ocean",
+    "color": 7368918,
+    "rainfall": 0.5
+  },
+  {
+    "id": 11,
+    "name": "frozen_river",
+    "category": "river",
+    "temperature": 0,
+    "precipitation": "snow",
+    "depth": -0.5,
+    "dimension": "overworld",
+    "displayName": "Frozen River",
+    "color": 10526975,
+    "rainfall": 0.5
+  },
+  {
+    "id": 12,
+    "name": "snowy_tundra",
+    "category": "icy",
+    "temperature": 0,
+    "precipitation": "snow",
+    "depth": 0.125,
+    "dimension": "overworld",
+    "displayName": "Snowy Tundra",
+    "color": 16777215,
+    "rainfall": 0.5,
+    "child": 140
+  },
+  {
+    "id": 13,
+    "name": "snowy_mountains",
+    "category": "icy",
+    "temperature": 0,
+    "precipitation": "snow",
+    "depth": 0.45,
+    "dimension": "overworld",
+    "displayName": "Snowy Mountains",
+    "color": 10526880,
+    "rainfall": 0.5
+  },
+  {
+    "id": 14,
+    "name": "mushroom_fields",
+    "category": "mushroom",
+    "temperature": 0.9,
+    "precipitation": "rain",
+    "depth": 0.2,
+    "dimension": "overworld",
+    "displayName": "Mushroom Fields",
+    "color": 16711935,
+    "rainfall": 1
+  },
+  {
+    "id": 15,
+    "name": "mushroom_field_shore",
+    "category": "mushroom",
+    "temperature": 0.9,
+    "precipitation": "rain",
+    "depth": 0,
+    "dimension": "overworld",
+    "displayName": "Mushroom Fields Shore",
+    "color": 10486015,
+    "rainfall": 1
+  },
+  {
+    "id": 16,
+    "name": "beach",
+    "category": "beach",
+    "temperature": 0.8,
+    "precipitation": "rain",
+    "depth": 0,
+    "dimension": "overworld",
+    "displayName": "Beach",
+    "color": 16440917,
+    "rainfall": 0.4
+  },
+  {
+    "id": 17,
+    "name": "desert_hills",
+    "category": "desert",
+    "temperature": 2,
+    "precipitation": "none",
+    "depth": 0.45,
+    "dimension": "overworld",
+    "displayName": "Desert Hills",
+    "color": 13786898,
+    "rainfall": 0
+  },
+  {
+    "id": 18,
+    "name": "wooded_hills",
+    "category": "forest",
+    "temperature": 0.7,
+    "precipitation": "rain",
+    "depth": 0.45,
+    "dimension": "overworld",
+    "displayName": "Wooded Hills",
+    "color": 2250012,
+    "rainfall": 0.8
+  },
+  {
+    "id": 19,
+    "name": "taiga_hills",
+    "category": "taiga",
+    "temperature": 0.25,
+    "precipitation": "rain",
+    "depth": 0.45,
+    "dimension": "overworld",
+    "displayName": "Taiga Hills",
+    "color": 1456435,
+    "rainfall": 0.8
+  },
+  {
+    "id": 20,
+    "name": "mountain_edge",
+    "category": "extreme_hills",
+    "temperature": 0.2,
+    "precipitation": "rain",
+    "depth": 0.8,
+    "dimension": "overworld",
+    "displayName": "Mountain Edge",
+    "color": 7501978,
+    "rainfall": 0.3
+  },
+  {
+    "id": 21,
+    "name": "jungle",
+    "category": "jungle",
+    "temperature": 0.95,
+    "precipitation": "rain",
+    "depth": 0.1,
+    "dimension": "overworld",
+    "displayName": "Jungle",
+    "color": 5470985,
+    "rainfall": 0.9,
+    "child": 149
+  },
+  {
+    "id": 22,
+    "name": "jungle_hills",
+    "category": "jungle",
+    "temperature": 0.95,
+    "precipitation": "rain",
+    "depth": 0.45,
+    "dimension": "overworld",
+    "displayName": "Jungle Hills",
+    "color": 2900485,
+    "rainfall": 0.9
+  },
+  {
+    "id": 23,
+    "name": "jungle_edge",
+    "category": "jungle",
+    "temperature": 0.95,
+    "precipitation": "rain",
+    "depth": 0.1,
+    "dimension": "overworld",
+    "displayName": "Jungle Edge",
+    "color": 6458135,
+    "rainfall": 0.8,
+    "child": 151
+  },
+  {
+    "id": 24,
+    "name": "deep_ocean",
+    "category": "ocean",
+    "temperature": 0.5,
+    "precipitation": "rain",
+    "depth": -1.8,
+    "dimension": "overworld",
+    "displayName": "Deep Ocean",
+    "color": 48,
+    "rainfall": 0.5
+  },
+  {
+    "id": 25,
+    "name": "stone_shore",
+    "category": "none",
+    "temperature": 0.2,
+    "precipitation": "rain",
+    "depth": 0.1,
+    "dimension": "overworld",
+    "displayName": "Stone Shore",
+    "color": 10658436,
+    "rainfall": 0.3
+  },
+  {
+    "id": 26,
+    "name": "snowy_beach",
+    "category": "beach",
+    "temperature": 0.05,
+    "precipitation": "snow",
+    "depth": 0,
+    "dimension": "overworld",
+    "displayName": "Snowy Beach",
+    "color": 16445632,
+    "rainfall": 0.3
+  },
+  {
+    "id": 27,
+    "name": "birch_forest",
+    "category": "forest",
+    "temperature": 0.6,
+    "precipitation": "rain",
+    "depth": 0.1,
+    "dimension": "overworld",
+    "displayName": "Birch Forest",
+    "color": 3175492,
+    "rainfall": 0.6,
+    "child": 155
+  },
+  {
+    "id": 28,
+    "name": "birch_forest_hills",
+    "category": "forest",
+    "temperature": 0.6,
+    "precipitation": "rain",
+    "depth": 0.45,
+    "dimension": "overworld",
+    "displayName": "Birch Forest Hills",
+    "color": 2055986,
+    "rainfall": 0.6,
+    "child": 156
+  },
+  {
+    "id": 29,
+    "name": "dark_forest",
+    "category": "forest",
+    "temperature": 0.7,
+    "precipitation": "rain",
+    "depth": 0.1,
+    "dimension": "overworld",
+    "displayName": "Dark Forest",
+    "color": 4215066,
+    "rainfall": 0.8,
+    "child": 157
+  },
+  {
+    "id": 30,
+    "name": "snowy_taiga",
+    "category": "taiga",
+    "temperature": -0.5,
+    "precipitation": "snow",
+    "depth": 0.2,
+    "dimension": "overworld",
+    "displayName": "Snowy Taiga",
+    "color": 3233098,
+    "rainfall": 0.4,
+    "child": 158
+  },
+  {
+    "id": 31,
+    "name": "snowy_taiga_hills",
+    "category": "taiga",
+    "temperature": -0.5,
+    "precipitation": "snow",
+    "depth": 0.45,
+    "dimension": "overworld",
+    "displayName": "Snowy Taiga Hills",
+    "color": 2375478,
+    "rainfall": 0.4
+  },
+  {
+    "id": 32,
+    "name": "giant_tree_taiga",
+    "category": "taiga",
+    "temperature": 0.3,
+    "precipitation": "rain",
+    "depth": 0.2,
+    "dimension": "overworld",
+    "displayName": "Giant Tree Taiga",
+    "color": 5858897,
+    "rainfall": 0.8,
+    "child": 160
+  },
+  {
+    "id": 33,
+    "name": "giant_tree_taiga_hills",
+    "category": "taiga",
+    "temperature": 0.3,
+    "precipitation": "rain",
+    "depth": 0.45,
+    "dimension": "overworld",
+    "displayName": "Giant Tree Taiga Hills",
+    "color": 4542270,
+    "rainfall": 0.8,
+    "child": 161
+  },
+  {
+    "id": 34,
+    "name": "wooded_mountains",
+    "category": "extreme_hills",
+    "temperature": 0.2,
+    "precipitation": "rain",
+    "depth": 1,
+    "dimension": "overworld",
+    "displayName": "Wooded Mountains",
+    "color": 5271632,
+    "rainfall": 0.3,
+    "child": 162
+  },
+  {
+    "id": 35,
+    "name": "savanna",
+    "category": "savanna",
+    "temperature": 1.2,
+    "precipitation": "none",
+    "depth": 0.125,
+    "dimension": "overworld",
+    "displayName": "Savanna",
+    "color": 12431967,
+    "rainfall": 0,
+    "child": 163
+  },
+  {
+    "id": 36,
+    "name": "savanna_plateau",
+    "category": "savanna",
+    "temperature": 1,
+    "precipitation": "none",
+    "depth": 1.5,
+    "dimension": "overworld",
+    "displayName": "Savanna Plateau",
+    "color": 10984804,
+    "rainfall": 0,
+    "child": 164
+  },
+  {
+    "id": 37,
+    "name": "badlands",
+    "category": "mesa",
+    "temperature": 2,
+    "precipitation": "none",
+    "depth": 0.1,
+    "dimension": "overworld",
+    "displayName": "Badlands",
+    "color": 14238997,
+    "rainfall": 0,
+    "child": 165
+  },
+  {
+    "id": 38,
+    "name": "wooded_badlands_plateau",
+    "category": "mesa",
+    "temperature": 2,
+    "precipitation": "none",
+    "depth": 1.5,
+    "dimension": "overworld",
+    "displayName": "Wooded Badlands Plateau",
+    "color": 11573093,
+    "rainfall": 0,
+    "child": 166
+  },
+  {
+    "id": 39,
+    "name": "badlands_plateau",
+    "category": "mesa",
+    "temperature": 2,
+    "precipitation": "none",
+    "depth": 1.5,
+    "dimension": "overworld",
+    "displayName": "Badlands Plateau",
+    "color": 13274213,
+    "rainfall": 0,
+    "child": 167
+  },
+  {
+    "id": 40,
+    "name": "small_end_islands",
+    "category": "the_end",
+    "temperature": 0.5,
+    "precipitation": "none",
+    "depth": 0.1,
+    "dimension": "end",
+    "displayName": "Small End Islands",
+    "color": 42,
+    "rainfall": 0.5
+  },
+  {
+    "id": 41,
+    "name": "end_midlands",
+    "category": "the_end",
+    "temperature": 0.5,
+    "precipitation": "none",
+    "depth": 0.1,
+    "dimension": "end",
+    "displayName": "End Midlands",
+    "color": 15464630,
+    "rainfall": 0.5
+  },
+  {
+    "id": 42,
+    "name": "end_highlands",
+    "category": "the_end",
+    "temperature": 0.5,
+    "precipitation": "none",
+    "depth": 0.1,
+    "dimension": "end",
+    "displayName": "End Highlands",
+    "color": 12828041,
+    "rainfall": 0.5
+  },
+  {
+    "id": 43,
+    "name": "end_barrens",
+    "category": "the_end",
+    "temperature": 0.5,
+    "precipitation": "none",
+    "depth": 0.1,
+    "dimension": "end",
+    "displayName": "End Barrens",
+    "color": 9474162,
+    "rainfall": 0.5
+  },
+  {
+    "id": 44,
+    "name": "warm_ocean",
+    "category": "ocean",
+    "temperature": 0.5,
+    "precipitation": "rain",
+    "depth": -1,
+    "dimension": "overworld",
+    "displayName": "Warm Ocean",
+    "color": 172,
+    "rainfall": 0.5
+  },
+  {
+    "id": 45,
+    "name": "lukewarm_ocean",
+    "category": "ocean",
+    "temperature": 0.5,
+    "precipitation": "rain",
+    "depth": -1,
+    "dimension": "overworld",
+    "displayName": "Lukewarm Ocean",
+    "color": 144,
+    "rainfall": 0.5
+  },
+  {
+    "id": 46,
+    "name": "cold_ocean",
+    "category": "ocean",
+    "temperature": 0.5,
+    "precipitation": "rain",
+    "depth": -1,
+    "dimension": "overworld",
+    "displayName": "Cold Ocean",
+    "color": 2105456,
+    "rainfall": 0.5
+  },
+  {
+    "id": 47,
+    "name": "deep_warm_ocean",
+    "category": "ocean",
+    "temperature": 0.5,
+    "precipitation": "rain",
+    "depth": -1.8,
+    "dimension": "overworld",
+    "displayName": "Deep Warm Ocean",
+    "color": 80,
+    "rainfall": 0.5
+  },
+  {
+    "id": 48,
+    "name": "deep_lukewarm_ocean",
+    "category": "ocean",
+    "temperature": 0.5,
+    "precipitation": "rain",
+    "depth": -1.8,
+    "dimension": "overworld",
+    "displayName": "Deep Lukewarm Ocean",
+    "color": 64,
+    "rainfall": 0.5
+  },
+  {
+    "id": 49,
+    "name": "deep_cold_ocean",
+    "category": "ocean",
+    "temperature": 0.5,
+    "precipitation": "rain",
+    "depth": -1.8,
+    "dimension": "overworld",
+    "displayName": "Deep Cold Ocean",
+    "color": 2105400,
+    "rainfall": 0.5
+  },
+  {
+    "id": 50,
+    "name": "deep_frozen_ocean",
+    "category": "ocean",
+    "temperature": 0.5,
+    "precipitation": "rain",
+    "depth": -1.8,
+    "dimension": "overworld",
+    "displayName": "Deep Frozen Ocean",
+    "color": 4210832,
+    "rainfall": 0.5
+  },
+  {
+    "id": 127,
+    "name": "the_void",
+    "category": "none",
+    "temperature": 0.5,
+    "precipitation": "none",
+    "depth": 0.1,
+    "dimension": "end",
+    "displayName": "the_void",
+    "rainfall": 0.5,
+    "color": 0
+  },
+  {
+    "id": 129,
+    "name": "sunflower_plains",
+    "category": "plains",
+    "temperature": 0.8,
+    "precipitation": "rain",
+    "depth": 0.125,
+    "dimension": "overworld",
+    "displayName": "Sunflower Plains",
+    "color": 11918216,
+    "parent": "plains",
+    "rainfall": 0.4
+  },
+  {
+    "id": 130,
+    "name": "desert_lakes",
+    "category": "desert",
+    "temperature": 2,
+    "precipitation": "none",
+    "depth": 0.125,
+    "dimension": "overworld",
+    "displayName": "Desert Lakes",
+    "color": 16759872,
+    "parent": "desert",
+    "rainfall": 0
+  },
+  {
+    "id": 131,
+    "name": "gravelly_mountains",
+    "category": "extreme_hills",
+    "temperature": 0.2,
+    "precipitation": "rain",
+    "depth": 1,
+    "dimension": "overworld",
+    "displayName": "Gravelly Mountains",
+    "color": 8947848,
+    "parent": "mountains",
+    "rainfall": 0.3
+  },
+  {
+    "id": 132,
+    "name": "flower_forest",
+    "category": "forest",
+    "temperature": 0.7,
+    "precipitation": "rain",
+    "depth": 0.1,
+    "dimension": "overworld",
+    "displayName": "Flower Forest",
+    "color": 2985545,
+    "parent": "forest",
+    "rainfall": 0.8
+  },
+  {
+    "id": 133,
+    "name": "taiga_mountains",
+    "category": "taiga",
+    "temperature": 0.25,
+    "precipitation": "rain",
+    "depth": 0.3,
+    "dimension": "overworld",
+    "displayName": "Taiga Mountains",
+    "color": 3378817,
+    "parent": "taiga",
+    "rainfall": 0.8
+  },
+  {
+    "id": 134,
+    "name": "swamp_hills",
+    "category": "swamp",
+    "temperature": 0.8,
+    "precipitation": "rain",
+    "depth": -0.1,
+    "dimension": "overworld",
+    "displayName": "Swamp Hills",
+    "color": 3145690,
+    "parent": "swamp",
+    "rainfall": 0.9
+  },
+  {
+    "id": 140,
+    "name": "ice_spikes",
+    "category": "icy",
+    "temperature": 0,
+    "precipitation": "snow",
+    "depth": 0.425,
+    "dimension": "overworld",
+    "displayName": "Ice Spikes",
+    "color": 11853020,
+    "parent": "snowy_tundra",
+    "rainfall": 0.5
+  },
+  {
+    "id": 149,
+    "name": "modified_jungle",
+    "category": "jungle",
+    "temperature": 0.95,
+    "precipitation": "rain",
+    "depth": 0.2,
+    "dimension": "overworld",
+    "displayName": "Modified Jungle",
+    "color": 8102705,
+    "parent": "jungle",
+    "rainfall": 0.9
+  },
+  {
+    "id": 151,
+    "name": "modified_jungle_edge",
+    "category": "jungle",
+    "temperature": 0.95,
+    "precipitation": "rain",
+    "depth": 0.2,
+    "dimension": "overworld",
+    "displayName": "Modified Jungle Edge",
+    "color": 9089855,
+    "parent": "jungle_edge",
+    "rainfall": 0.8
+  },
+  {
+    "id": 155,
+    "name": "tall_birch_forest",
+    "category": "forest",
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+  }
+]

mc/data/minecraft-data/pc/1.14.4/blockCollisionShapes.json

@@ -0,0 +1,946 @@
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mc/data/minecraft-data/pc/1.14.4/effects.json

@@ -0,0 +1,200 @@
+[
+  {
+    "id": 1,
+    "name": "Speed",
+    "displayName": "Speed",
+    "type": "good"
+  },
+  {
+    "id": 2,
+    "name": "Slowness",
+    "displayName": "Slowness",
+    "type": "bad"
+  },
+  {
+    "id": 3,
+    "name": "Haste",
+    "displayName": "Haste",
+    "type": "good"
+  },
+  {
+    "id": 4,
+    "name": "MiningFatigue",
+    "displayName": "Mining Fatigue",
+    "type": "bad"
+  },
+  {
+    "id": 5,
+    "name": "Strength",
+    "displayName": "Strength",
+    "type": "good"
+  },
+  {
+    "id": 6,
+    "name": "InstantHealth",
+    "displayName": "Instant Health",
+    "type": "good"
+  },
+  {
+    "id": 7,
+    "name": "InstantDamage",
+    "displayName": "Instant Damage",
+    "type": "bad"
+  },
+  {
+    "id": 8,
+    "name": "JumpBoost",
+    "displayName": "Jump Boost",
+    "type": "good"
+  },
+  {
+    "id": 9,
+    "name": "Nausea",
+    "displayName": "Nausea",
+    "type": "bad"
+  },
+  {
+    "id": 10,
+    "name": "Regeneration",
+    "displayName": "Regeneration",
+    "type": "good"
+  },
+  {
+    "id": 11,
+    "name": "Resistance",
+    "displayName": "Resistance",
+    "type": "good"
+  },
+  {
+    "id": 12,
+    "name": "FireResistance",
+    "displayName": "Fire Resistance",
+    "type": "good"
+  },
+  {
+    "id": 13,
+    "name": "WaterBreathing",
+    "displayName": "Water Breathing",
+    "type": "good"
+  },
+  {
+    "id": 14,
+    "name": "Invisibility",
+    "displayName": "Invisibility",
+    "type": "good"
+  },
+  {
+    "id": 15,
+    "name": "Blindness",
+    "displayName": "Blindness",
+    "type": "bad"
+  },
+  {
+    "id": 16,
+    "name": "NightVision",
+    "displayName": "Night Vision",
+    "type": "good"
+  },
+  {
+    "id": 17,
+    "name": "Hunger",
+    "displayName": "Hunger",
+    "type": "bad"
+  },
+  {
+    "id": 18,
+    "name": "Weakness",
+    "displayName": "Weakness",
+    "type": "bad"
+  },
+  {
+    "id": 19,
+    "name": "Poison",
+    "displayName": "Poison",
+    "type": "bad"
+  },
+  {
+    "id": 20,
+    "name": "Wither",
+    "displayName": "Wither",
+    "type": "bad"
+  },
+  {
+    "id": 21,
+    "name": "HealthBoost",
+    "displayName": "Health Boost",
+    "type": "good"
+  },
+  {
+    "id": 22,
+    "name": "Absorption",
+    "displayName": "Absorption",
+    "type": "good"
+  },
+  {
+    "id": 23,
+    "name": "Saturation",
+    "displayName": "Saturation",
+    "type": "good"
+  },
+  {
+    "id": 24,
+    "name": "Glowing",
+    "displayName": "Glowing",
+    "type": "bad"
+  },
+  {
+    "id": 25,
+    "name": "Levitation",
+    "displayName": "Levitation",
+    "type": "bad"
+  },
+  {
+    "id": 26,
+    "name": "Luck",
+    "displayName": "Luck",
+    "type": "good"
+  },
+  {
+    "id": 27,
+    "name": "BadLuck",
+    "displayName": "Bad Luck",
+    "type": "bad"
+  },
+  {
+    "id": 28,
+    "name": "SlowFalling",
+    "displayName": "Slow Falling",
+    "type": "good"
+  },
+  {
+    "id": 29,
+    "name": "ConduitPower",
+    "displayName": "Conduit Power",
+    "type": "good"
+  },
+  {
+    "id": 30,
+    "name": "DolphinsGrace",
+    "displayName": "Dolphin's Grace",
+    "type": "good"
+  },
+  {
+    "id": 31,
+    "name": "DolphinsGrace",
+    "displayName": "Dolphin's Grace",
+    "type": "good"
+  },
+  {
+    "id": 32,
+    "name": "BadOmen",
+    "displayName": "Bad Omen",
+    "type": "good"
+  },
+  {
+    "id": 32,
+    "name": "HeroOfTheVillage",
+    "displayName": "Hero Of The Village",
+    "type": "good"
+  }
+]

mc/data/minecraft-data/pc/1.14.4/foods.json

@@ -0,0 +1,392 @@
+[
+  {
+    "id": 524,
+    "displayName": "Apple",
+    "name": "apple",
+    "stackSize": 64,
+    "foodPoints": 4,
+    "saturation": 2.4,
+    "effectiveQuality": 6.4,
+    "saturationRatio": 0.6
+  },
+  {
+    "id": 547,
+    "displayName": "Mushroom Stew",
+    "name": "mushroom_stew",
+    "stackSize": 1,
+    "foodPoints": 6,
+    "saturation": 7.2,
+    "effectiveQuality": 13.2,
+    "saturationRatio": 1.2
+  },
+  {
+    "id": 562,
+    "displayName": "Bread",
+    "name": "bread",
+    "stackSize": 64,
+    "foodPoints": 5,
+    "saturation": 6,
+    "effectiveQuality": 11,
+    "saturationRatio": 1.2
+  },
+  {
+    "id": 584,
+    "displayName": "Raw Porkchop",
+    "name": "porkchop",
+    "stackSize": 64,
+    "foodPoints": 3,
+    "saturation": 1.8,
+    "effectiveQuality": 4.8,
+    "saturationRatio": 0.6
+  },
+  {
+    "id": 585,
+    "displayName": "Cooked Porkchop",
+    "name": "cooked_porkchop",
+    "stackSize": 64,
+    "foodPoints": 8,
+    "saturation": 12.8,
+    "effectiveQuality": 20.8,
+    "saturationRatio": 1.6
+  },
+  {
+    "id": 587,
+    "displayName": "Golden Apple",
+    "name": "golden_apple",
+    "stackSize": 64,
+    "foodPoints": 4,
+    "saturation": 9.6,
+    "effectiveQuality": 13.6,
+    "saturationRatio": 2.4
+  },
+  {
+    "id": 588,
+    "displayName": "Enchanted Golden Apple",
+    "name": "enchanted_golden_apple",
+    "stackSize": 64,
+    "foodPoints": 4,
+    "saturation": 9.6,
+    "effectiveQuality": 13.6,
+    "saturationRatio": 2.4
+  },
+  {
+    "id": 625,
+    "displayName": "Raw Cod",
+    "name": "cod",
+    "stackSize": 64,
+    "foodPoints": 2,
+    "saturation": 0.4,
+    "effectiveQuality": 2.4,
+    "saturationRatio": 0.2
+  },
+  {
+    "id": 626,
+    "displayName": "Raw Salmon",
+    "name": "salmon",
+    "stackSize": 64,
+    "foodPoints": 2,
+    "saturation": 0.4,
+    "effectiveQuality": 2.4,
+    "saturationRatio": 0.2
+  },
+  {
+    "id": 627,
+    "displayName": "Tropical Fish",
+    "name": "tropical_fish",
+    "stackSize": 64,
+    "foodPoints": 1,
+    "saturation": 0.2,
+    "effectiveQuality": 1.2,
+    "saturationRatio": 0.2
+  },
+  {
+    "id": 628,
+    "displayName": "Pufferfish",
+    "name": "pufferfish",
+    "stackSize": 64,
+    "foodPoints": 1,
+    "saturation": 0.2,
+    "effectiveQuality": 1.2,
+    "saturationRatio": 0.2
+  },
+  {
+    "id": 629,
+    "displayName": "Cooked Cod",
+    "name": "cooked_cod",
+    "stackSize": 64,
+    "foodPoints": 5,
+    "saturation": 6,
+    "effectiveQuality": 11,
+    "saturationRatio": 1.2
+  },
+  {
+    "id": 630,
+    "displayName": "Cooked Salmon",
+    "name": "cooked_salmon",
+    "stackSize": 64,
+    "foodPoints": 6,
+    "saturation": 9.6,
+    "effectiveQuality": 15.6,
+    "saturationRatio": 1.5999999999999999
+  },
+  {
+    "id": 653,
+    "displayName": "Cake",
+    "name": "cake",
+    "stackSize": 1,
+    "foodPoints": 2,
+    "saturation": 0.4,
+    "effectiveQuality": 2.4,
+    "saturationRatio": 0.2
+  },
+  {
+    "id": 670,
+    "displayName": "Cookie",
+    "name": "cookie",
+    "stackSize": 64,
+    "foodPoints": 2,
+    "saturation": 0.4,
+    "effectiveQuality": 2.4,
+    "saturationRatio": 0.2
+  },
+  {
+    "id": 673,
+    "displayName": "Melon Slice",
+    "name": "melon_slice",
+    "stackSize": 64,
+    "foodPoints": 2,
+    "saturation": 1.2,
+    "effectiveQuality": 3.2,
+    "saturationRatio": 0.6
+  },
+  {
+    "id": 674,
+    "displayName": "Dried Kelp",
+    "name": "dried_kelp",
+    "stackSize": 64,
+    "foodPoints": 1,
+    "saturation": 0.6,
+    "effectiveQuality": 1.6,
+    "saturationRatio": 0.6
+  },
+  {
+    "id": 677,
+    "displayName": "Raw Beef",
+    "name": "beef",
+    "stackSize": 64,
+    "foodPoints": 3,
+    "saturation": 1.8,
+    "effectiveQuality": 4.8,
+    "saturationRatio": 0.6
+  },
+  {
+    "id": 678,
+    "displayName": "Steak",
+    "name": "cooked_beef",
+    "stackSize": 64,
+    "foodPoints": 8,
+    "saturation": 12.8,
+    "effectiveQuality": 20.8,
+    "saturationRatio": 1.6
+  },
+  {
+    "id": 679,
+    "displayName": "Raw Chicken",
+    "name": "chicken",
+    "stackSize": 64,
+    "foodPoints": 2,
+    "saturation": 1.2,
+    "effectiveQuality": 3.2,
+    "saturationRatio": 0.6
+  },
+  {
+    "id": 680,
+    "displayName": "Cooked Chicken",
+    "name": "cooked_chicken",
+    "stackSize": 64,
+    "foodPoints": 6,
+    "saturation": 7.2,
+    "effectiveQuality": 13.2,
+    "saturationRatio": 1.2
+  },
+  {
+    "id": 681,
+    "displayName": "Rotten Flesh",
+    "name": "rotten_flesh",
+    "stackSize": 64,
+    "foodPoints": 4,
+    "saturation": 0.8,
+    "effectiveQuality": 4.8,
+    "saturationRatio": 0.2
+  },
+  {
+    "id": 689,
+    "displayName": "Spider Eye",
+    "name": "spider_eye",
+    "stackSize": 64,
+    "foodPoints": 2,
+    "saturation": 3.2,
+    "effectiveQuality": 5.2,
+    "saturationRatio": 1.6
+  },
+  {
+    "id": 762,
+    "displayName": "Carrot",
+    "name": "carrot",
+    "stackSize": 64,
+    "foodPoints": 3,
+    "saturation": 3.6,
+    "effectiveQuality": 6.6,
+    "saturationRatio": 1.2
+  },
+  {
+    "id": 763,
+    "displayName": "Potato",
+    "name": "potato",
+    "stackSize": 64,
+    "foodPoints": 1,
+    "saturation": 0.6,
+    "effectiveQuality": 1.6,
+    "saturationRatio": 0.6
+  },
+  {
+    "id": 764,
+    "displayName": "Baked Potato",
+    "name": "baked_potato",
+    "stackSize": 64,
+    "foodPoints": 5,
+    "saturation": 6,
+    "effectiveQuality": 11,
+    "saturationRatio": 1.2
+  },
+  {
+    "id": 765,
+    "displayName": "Poisonous Potato",
+    "name": "poisonous_potato",
+    "stackSize": 64,
+    "foodPoints": 2,
+    "saturation": 1.2,
+    "effectiveQuality": 3.2,
+    "saturationRatio": 0.6
+  },
+  {
+    "id": 767,
+    "displayName": "Golden Carrot",
+    "name": "golden_carrot",
+    "stackSize": 64,
+    "foodPoints": 6,
+    "saturation": 14.4,
+    "effectiveQuality": 20.4,
+    "saturationRatio": 2.4
+  },
+  {
+    "id": 776,
+    "displayName": "Pumpkin Pie",
+    "name": "pumpkin_pie",
+    "stackSize": 64,
+    "foodPoints": 8,
+    "saturation": 4.8,
+    "effectiveQuality": 12.8,
+    "saturationRatio": 0.6
+  },
+  {
+    "id": 786,
+    "displayName": "Raw Rabbit",
+    "name": "rabbit",
+    "stackSize": 64,
+    "foodPoints": 3,
+    "saturation": 1.8,
+    "effectiveQuality": 4.8,
+    "saturationRatio": 0.6
+  },
+  {
+    "id": 787,
+    "displayName": "Cooked Rabbit",
+    "name": "cooked_rabbit",
+    "stackSize": 64,
+    "foodPoints": 5,
+    "saturation": 6,
+    "effectiveQuality": 11,
+    "saturationRatio": 1.2
+  },
+  {
+    "id": 788,
+    "displayName": "Rabbit Stew",
+    "name": "rabbit_stew",
+    "stackSize": 1,
+    "foodPoints": 10,
+    "saturation": 12,
+    "effectiveQuality": 22,
+    "saturationRatio": 1.2
+  },
+  {
+    "id": 799,
+    "displayName": "Raw Mutton",
+    "name": "mutton",
+    "stackSize": 64,
+    "foodPoints": 2,
+    "saturation": 1.2,
+    "effectiveQuality": 3.2,
+    "saturationRatio": 0.6
+  },
+  {
+    "id": 800,
+    "displayName": "Cooked Mutton",
+    "name": "cooked_mutton",
+    "stackSize": 64,
+    "foodPoints": 6,
+    "saturation": 9.6,
+    "effectiveQuality": 15.6,
+    "saturationRatio": 1.5999999999999999
+  },
+  {
+    "id": 818,
+    "displayName": "Chorus Fruit",
+    "name": "chorus_fruit",
+    "stackSize": 64,
+    "foodPoints": 4,
+    "saturation": 2.4,
+    "effectiveQuality": 6.4,
+    "saturationRatio": 0.6
+  },
+  {
+    "id": 820,
+    "displayName": "Beetroot",
+    "name": "beetroot",
+    "stackSize": 64,
+    "foodPoints": 1,
+    "saturation": 1.2,
+    "effectiveQuality": 2.2,
+    "saturationRatio": 1.2
+  },
+  {
+    "id": 822,
+    "displayName": "Beetroot Soup",
+    "name": "beetroot_soup",
+    "stackSize": 1,
+    "foodPoints": 6,
+    "saturation": 7.2,
+    "effectiveQuality": 13.2,
+    "saturationRatio": 1.2
+  },
+  {
+    "id": 857,
+    "displayName": "Suspicious Stew",
+    "name": "suspicious_stew",
+    "stackSize": 1,
+    "foodPoints": 6,
+    "saturation": 7.2,
+    "effectiveQuality": 13.2,
+    "saturationRatio": 1.2
+  },
+  {
+    "id": 875,
+    "displayName": "Sweet Berries",
+    "name": "sweet_berries",
+    "stackSize": 64,
+    "foodPoints": 2,
+    "saturation": 0.4,
+    "effectiveQuality": 2.4,
+    "saturationRatio": 0.2
+  }
+]

mc/data/minecraft-data/pc/1.14.4/instruments.json

@@ -0,0 +1,42 @@
+[
+  {
+    "id": 0,
+    "name": "harp"
+  },
+  {
+    "id": 1,
+    "name": "basedrum"
+  },
+  {
+    "id": 2,
+    "name": "snare"
+  },
+  {
+    "id": 3,
+    "name": "hat"
+  },
+  {
+    "id": 4,
+    "name": "bass"
+  },
+  {
+    "id": 5,
+    "name": "flute"
+  },
+  {
+    "id": 6,
+    "name": "bell"
+  },
+  {
+    "id": 7,
+    "name": "guitar"
+  },
+  {
+    "id": 8,
+    "name": "chime"
+  },
+  {
+    "id": 9,
+    "name": "xylophone"
+  }
+]

mc/data/minecraft-data/pc/1.14.4/materials.json

@@ -0,0 +1,61 @@
+{
+  "rock": {
+    "521": 6,
+    "535": 2,
+    "539": 4,
+    "543": 8,
+    "550": 12
+  },
+  "wood": {
+    "522": 6,
+    "536": 2,
+    "540": 4,
+    "544": 8,
+    "551": 12
+  },
+  "plant": {
+    "522": 6,
+    "532": 1.5,
+    "533": 1.5,
+    "536": 2,
+    "537": 1.5,
+    "540": 4,
+    "541": 1.5,
+    "544": 8,
+    "548": 1.5,
+    "551": 12
+  },
+  "melon": {
+    "532": 1.5,
+    "533": 1.5,
+    "537": 1.5,
+    "541": 1.5,
+    "548": 1.5
+  },
+  "leaves": {
+    "532": 1.5,
+    "533": 1.5,
+    "537": 1.5,
+    "541": 1.5,
+    "548": 1.5,
+    "672": 6
+  },
+  "dirt": {
+    "520": 6,
+    "534": 2,
+    "538": 4,
+    "542": 8,
+    "549": 12
+  },
+  "web": {
+    "532": 15,
+    "533": 15,
+    "537": 15,
+    "541": 15,
+    "548": 15,
+    "672": 15
+  },
+  "wool": {
+    "672": 4.8
+  }
+}

mc/data/minecraft-data/pc/1.14.4/version.json

@@ -0,0 +1,5 @@
+{
+  "minecraftVersion": "1.14.4",
+  "version": 498,
+  "majorVersion": "1.14"
+}

mc/data/minecraft-data/pc/1.14.4/windows.json

@@ -0,0 +1,229 @@
+[
+  {
+    "id": "",
+    "name": "Player",
+    "slots": [
+      {
+        "name": "craft result",
+        "index": 0
+      },
+      {
+        "name": "craft grid",
+        "index": 1,
+        "size": 4
+      },
+      {
+        "name": "armor",
+        "index": 5,
+        "size": 4
+      },
+      {
+        "name": "helmet",
+        "index": 5
+      },
+      {
+        "name": "chestplate",
+        "index": 6
+      },
+      {
+        "name": "leggings",
+        "index": 7
+      },
+      {
+        "name": "boots",
+        "index": 8
+      }
+    ]
+  },
+  {
+    "id": "EntityHorse",
+    "name": "Horse",
+    "slots": [
+      {
+        "name": "saddle",
+        "index": 0
+      },
+      {
+        "name": "armor",
+        "index": 1
+      },
+      {
+        "name": "storage",
+        "index": 2,
+        "size": 15
+      }
+    ],
+    "openedWith": [
+      {
+        "type": "entity",
+        "id": 100
+      }
+    ]
+  },
+  {
+    "id": "minecraft:anvil",
+    "name": "Anvil",
+    "slots": [
+      {
+        "name": "tool",
+        "index": 0
+      },
+      {
+        "name": "combined",
+        "index": 1
+      },
+      {
+        "name": "result",
+        "index": 2
+      }
+    ],
+    "properties": [
+      "repair cost"
+    ]
+  },
+  {
+    "id": "minecraft:beacon",
+    "name": "Beacon",
+    "slots": [
+      {
+        "name": "input",
+        "index": 0
+      }
+    ],
+    "properties": [
+      "level",
+      "effect 1",
+      "effect 2"
+    ],
+    "openedWith": [
+      {
+        "type": "block",
+        "id": 138
+      }
+    ]
+  },
+  {
+    "id": "minecraft:brewing_stand",
+    "name": "Brewing Stand",
+    "slots": [
+      {
+        "name": "ingredient",
+        "index": 0
+      },
+      {
+        "name": "result",
+        "index": 1,
+        "size": 3
+      }
+    ],
+    "properties": [
+      "brew time"
+    ],
+    "openedWith": [
+      {
+        "type": "block",
+        "id": 117
+      }
+    ]
+  },
+  {
+    "id": "minecraft:chest",
+    "name": "Chest"
+  },
+  {
+    "id": "minecraft:container",
+    "name": "Container"
+  },
+  {
+    "id": "minecraft:crafting_table",
+    "name": "Workbench",
+    "slots": [
+      {
+        "name": "craft result",
+        "index": 0
+      },
+      {
+        "name": "craft grid",
+        "index": 1,
+        "size": 9
+      }
+    ]
+  },
+  {
+    "id": "minecraft:dispenser",
+    "name": "Dispenser"
+  },
+  {
+    "id": "minecraft:dropper",
+    "name": "Dropper"
+  },
+  {
+    "id": "minecraft:enchanting_table",
+    "name": "Enchantment Table",
+    "slots": [
+      {
+        "name": "enchanted",
+        "index": 0
+      },
+      {
+        "name": "lapis",
+        "index": 1
+      }
+    ],
+    "properties": [
+      "xp 1",
+      "xp 2",
+      "xp 3",
+      "seed",
+      "tooltip 1",
+      "tooltip 2",
+      "tooltip 3"
+    ]
+  },
+  {
+    "id": "minecraft:furnace",
+    "name": "Furnace",
+    "slots": [
+      {
+        "name": "smelted",
+        "index": 0
+      },
+      {
+        "name": "fuel",
+        "index": 1
+      },
+      {
+        "name": "result",
+        "index": 2
+      }
+    ],
+    "properties": [
+      "fuel",
+      "fuel max",
+      "progress",
+      "progress max"
+    ]
+  },
+  {
+    "id": "minecraft:hopper",
+    "name": "Hopper"
+  },
+  {
+    "id": "minecraft:villager",
+    "name": "NPC Trade",
+    "slots": [
+      {
+        "name": "give 1",
+        "index": 0
+      },
+      {
+        "name": "give 2",
+        "index": 1
+      },
+      {
+        "name": "take",
+        "index": 2
+      }
+    ]
+  }
+]