Finish basic server and client impl

This commit is contained in:
zontreck 2024-05-22 15:53:29 -07:00
parent a082210fa9
commit 178cc201c1
4 changed files with 213 additions and 57 deletions

View file

@ -15,7 +15,7 @@ class NbtUtils {
}
static bool readBoolean(CompoundTag tag, String name) {
if (tag.contains(name)) {
if (tag.containsKey(name)) {
return tag.get(name)!.asByte() == 1 ? true : false;
} else {
return false;
@ -30,7 +30,7 @@ class NbtUtils {
}
static Vector2d readVector2d(CompoundTag tag, String name) {
if (tag.contains(name)) {
if (tag.containsKey(name)) {
ListTag lst = tag.get(name)! as ListTag;
return Vector2d(X: lst.get(0).asDouble(), Z: lst.get(1).asDouble());
} else {
@ -46,7 +46,7 @@ class NbtUtils {
}
static Vector2i readVector2i(CompoundTag tag, String name) {
if (tag.contains(name)) {
if (tag.containsKey(name)) {
ListTag lst = tag.get(name)! as ListTag;
return Vector2i(X: lst.get(0).asInt(), Z: lst.get(1).asInt());
} else {
@ -63,7 +63,7 @@ class NbtUtils {
}
static Vector3d readVector3d(CompoundTag tag, String name) {
if (tag.contains(name)) {
if (tag.containsKey(name)) {
ListTag lst = tag.get(name)! as ListTag;
return Vector3d(
X: lst.get(0).asDouble(),
@ -83,7 +83,7 @@ class NbtUtils {
}
static Vector3i readVector3i(CompoundTag tag, String name) {
if (tag.contains(name)) {
if (tag.containsKey(name)) {
ListTag lst = tag.get(name)! as ListTag;
return Vector3i(
X: lst.get(0).asInt(), Y: lst.get(1).asInt(), Z: lst.get(2).asInt());
@ -111,7 +111,7 @@ class NbtUtils {
}
static NbtUUID readUUID(CompoundTag tag, String name) {
if (!tag.contains(name)) {
if (!tag.containsKey(name)) {
return NbtUUID.ZERO;
} else {
return _uuidFromIntArray(tag.get(name)!.asIntArray());

View file

@ -1,7 +1,7 @@
import 'package:libac_flutter/nbt/Stream.dart';
import 'package:libac_flutter/nbt/Tag.dart';
class CompoundTag extends Tag {
class CompoundTag extends Tag implements Map<String, Tag> {
late final Map<String, Tag> value = {};
CompoundTag();
@ -48,12 +48,8 @@ class CompoundTag extends Tag {
tag.setKey(name);
}
bool contains(String name) {
return value.containsKey(name);
}
Tag? get(String name) {
if (contains(name)) {
if (containsKey(name)) {
return value[name] as Tag;
} else {
// Does not exist!
@ -61,10 +57,6 @@ class CompoundTag extends Tag {
}
}
void remove(String name) {
value.remove(name);
}
@override
TagType getTagType() {
return TagType.Compound;
@ -103,4 +95,99 @@ class CompoundTag extends Tag {
}
builder.append("\n${"".padLeft(indent - 1, '\t')}}");
}
@override
Tag? operator [](Object? key) {
return value[key];
}
@override
void operator []=(String key, Tag value) {
this.value[key] = value;
}
@override
void addAll(Map<String, Tag> other) {
value.addAll(other);
}
@override
void addEntries(Iterable<MapEntry<String, Tag>> newEntries) {
value.addEntries(newEntries);
}
@override
Map<RK, RV> cast<RK, RV>() {
return value.cast();
}
@override
void clear() {
value.clear();
}
@override
bool containsKey(Object? key) {
return value.containsKey(key);
}
@override
bool containsValue(Object? value) {
return this.value.containsValue(value);
}
@override
Iterable<MapEntry<String, Tag>> get entries => value.entries;
@override
void forEach(void Function(String key, Tag value) action) {
value.forEach(action);
}
@override
bool get isEmpty => value.isEmpty;
@override
bool get isNotEmpty => value.isNotEmpty;
@override
Iterable<String> get keys => value.keys;
@override
int get length => value.length;
@override
Map<K2, V2> map<K2, V2>(
MapEntry<K2, V2> Function(String key, Tag value) convert) {
return value.map(convert);
}
@override
Tag putIfAbsent(String key, Tag Function() ifAbsent) {
return this.value.putIfAbsent(key, ifAbsent);
}
@override
Tag? remove(Object? key) {
return value.remove(key);
}
@override
void removeWhere(bool Function(String key, Tag value) test) {
value.removeWhere(test);
}
@override
Tag update(String key, Tag Function(Tag value) update,
{Tag Function()? ifAbsent}) {
return value.update(key, update);
}
@override
void updateAll(Tag Function(String key, Tag value) update) {
value.updateAll(update);
}
@override
Iterable<Tag> get values => value.values;
}

View file

@ -2,18 +2,17 @@ import 'dart:convert';
import 'dart:io';
import 'package:libac_flutter/nbt/NbtIo.dart';
import 'package:libac_flutter/nbt/NbtUtils.dart';
import 'package:libac_flutter/nbt/Tag.dart';
import 'package:libac_flutter/nbt/impl/CompoundTag.dart';
import 'package:libac_flutter/nbt/impl/StringTag.dart';
class PacketServer {
static ServerSocket? socket;
static Future<void> start() async {
final ServerSocket socket =
await ServerSocket.bind(InternetAddress.anyIPv4, 25306);
socket = await ServerSocket.bind(InternetAddress.anyIPv4, 25306);
print("Server now listening on port 25306");
await for (var sock in socket) {
await for (var sock in socket!) {
print(
"New connection from ${sock.remoteAddress.address}:${sock.remotePort}");
@ -21,11 +20,16 @@ class PacketServer {
S2CStatusResponse response = S2CStatusResponse();
try {
CompoundTag tag = await NbtIo.readFromStream(data);
C2SRequestPacket request = C2SRequestPacket();
request.decodeTag(tag);
PacketResponse reply = await request.handlePacket();
// Server uses NBT to communicate
sock.add(await NbtIo.writeToStream(reply.replyDataTag));
} catch (E) {
response.status = false;
response.reason = "Malformed request packet";
sock.write(
sock.add(
await NbtIo.writeToStream(response.encodeTag() as CompoundTag));
}
}, onDone: () {
@ -37,14 +41,99 @@ class PacketServer {
}
}
class PacketClient {
Socket? socket;
bool connected = false;
PacketClient(String IPAddress) {
startConnect(IPAddress);
}
Future<void> startConnect(String IPAddress) async {
try {
socket = await Socket.connect(IPAddress, 25306);
connected = true;
} catch (E) {
connected = false;
socket = null;
}
}
Future<CompoundTag> send(IPacket packet) async {
socket!.add(await NbtIo.writeToStream(packet.encodeTag().asCompoundTag()));
CompoundTag ct = CompoundTag();
socket!.listen((data) async {
ct = await NbtIo.readFromStream(data);
});
return ct;
}
void close() {
socket!.close();
connected = false;
}
}
abstract class IPacket with NbtEncodable, JsonEncodable {
String getChannelID();
// This function handles the packet
Future<void> handlePacket();
Future<PacketResponse> handlePacket();
NetworkDirection direction();
}
class StopServerPacket extends IPacket {
@override
void decodeJson(String params) {}
@override
void decodeTag(Tag tag) {}
@override
NetworkDirection direction() {
return NetworkDirection.ClientToServer;
}
@override
String encodeJson() {
return json.encode({});
}
@override
Tag encodeTag() {
return CompoundTag();
}
@override
void fromJson(Map<String, dynamic> js) {}
@override
String getChannelID() {
return "StopServer";
}
@override
Future<PacketResponse> handlePacket() async {
PacketServer.socket!.close();
return PacketResponse(replyDataTag: CompoundTag());
}
@override
Map<String, dynamic> toJson() {
return {};
}
}
class PacketResponse {
static final nil = PacketResponse(replyDataTag: CompoundTag());
PacketResponse({required this.replyDataTag});
CompoundTag replyDataTag = CompoundTag();
}
class PacketRegistry {
Map<String, IPacket Function()> _registry = {};
static PacketRegistry _inst = PacketRegistry._();
@ -55,6 +144,8 @@ class PacketRegistry {
return _inst;
}
int get count => _registry.length;
void register(IPacket packet, IPacket Function() packetResolver) {
_registry[packet.getChannelID()] = packetResolver;
}
@ -71,6 +162,12 @@ class PacketRegistry {
register(S2CStatusResponse(), () {
return S2CStatusResponse();
});
register(C2SRequestPacket(), () {
return C2SRequestPacket();
});
register(StopServerPacket(), () {
return StopServerPacket();
});
}
}
@ -79,9 +176,7 @@ enum NetworkDirection { ClientToServer, ServerToClient }
enum PacketOperation { Encode, Decode }
class S2CStatusResponse implements IPacket {
bool status = false;
String reason = "";
late IPacket payload;
@override
NetworkDirection direction() {
@ -94,11 +189,9 @@ class S2CStatusResponse implements IPacket {
}
@override
Future<void> handlePacket() async {
Future<PacketResponse> handlePacket() async {
// No handling is required for this packet type
if (status) {
payload.handlePacket();
}
return PacketResponse.nil;
}
@override
@ -109,15 +202,7 @@ class S2CStatusResponse implements IPacket {
@override
void decodeTag(Tag encoded) {
CompoundTag ct = encoded as CompoundTag;
status = NbtUtils.readBoolean(ct, "status");
reason = ct.get("reason")!.asString();
if (ct.contains("payload")) {
String channel = ct.get("pc")!.asString();
payload = PacketRegistry().getPacket(channel);
payload.decodeTag(ct.get("payload")!);
}
}
@override
@ -128,39 +213,22 @@ class S2CStatusResponse implements IPacket {
@override
Tag encodeTag() {
CompoundTag tag = CompoundTag();
NbtUtils.writeBoolean(tag, "status", status);
tag.put("reason", StringTag.valueOf(reason));
if (status) {
tag.put("pc", StringTag.valueOf(payload.getChannelID()));
tag.put("payload", payload.encodeTag());
}
return tag;
}
@override
void fromJson(Map<String, dynamic> params) {
status = params["status"] as bool;
reason = params["reason"] as String;
if (status) {
String channel = params['pc'] as String;
payload = PacketRegistry().getPacket(channel);
payload.fromJson(params['payload']);
}
}
@override
Map<String, dynamic> toJson() {
Map<String, dynamic> map = {
"status": status,
"reason": reason,
};
if (status) {
map.addAll({"pc": payload.getChannelID(), "payload": payload.toJson()});
}
return map;
}
}
@ -214,8 +282,9 @@ class C2SRequestPacket implements IPacket {
}
@override
Future<void> handlePacket() async {
Future<PacketResponse> handlePacket() async {
// This has no internal handling
return payload.handlePacket();
}
@override

View file

@ -17,7 +17,7 @@ void main() {
CompoundTag tag =
await NbtIo.read("${Directory.current.path}/test/hello_world.nbt");
expect(tag.getKey(), "hello world");
expect(tag.contains("name"), true);
expect(tag.containsKey("name"), true);
expect(tag.get("name")!.asString(), "Bananrama");
});
@ -37,7 +37,7 @@ void main() {
CompoundTag tag =
await NbtIo.read("${Directory.current.path}/build/hello_world.nbt");
expect(tag.getKey(), "hello world");
expect(tag.contains("name"), true);
expect(tag.containsKey("name"), true);
expect(tag.get("name")!.asString(), "Bananrama");
});