@jsprismarine/raknet
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Basic RakNet implementation written in TypeScript
98 lines (97 loc) • 15.5 kB
JavaScript
"use strict";
Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
const require_runtime = require("../_virtual/_rolldown/runtime.cjs.cjs");
const require_utils_InetAddress = require("../utils/InetAddress.cjs.cjs");
const require_protocol_MessageIdentifiers = require("./MessageIdentifiers.cjs.cjs");
const require_protocol_connection_IncompatibleProtocolVersion = require("./connection/IncompatibleProtocolVersion.cjs.cjs");
const require_protocol_connection_OpenConnectionReply1 = require("./connection/OpenConnectionReply1.cjs.cjs");
const require_protocol_connection_OpenConnectionReply2 = require("./connection/OpenConnectionReply2.cjs.cjs");
const require_protocol_connection_OpenConnectionRequest2 = require("./connection/OpenConnectionRequest2.cjs.cjs");
const require_protocol_offline_UnconnectedPing = require("./offline/UnconnectedPing.cjs.cjs");
const require_protocol_offline_UnconnectedPong = require("./offline/UnconnectedPong.cjs.cjs");
const require_Constants = require("../Constants.cjs.cjs");
let _jsprismarine_jsbinaryutils = require("@jsprismarine/jsbinaryutils");
_jsprismarine_jsbinaryutils = require_runtime.__toESM(_jsprismarine_jsbinaryutils, 1);
//#region src/protocol/OfflineHandler.ts
var OfflineHandler = class {
listener;
constructor(listener) {
this.listener = listener;
}
process(msg, rinfo) {
switch (msg[0]) {
case require_protocol_MessageIdentifiers.MessageIdentifiers.UNCONNECTED_PING_OPEN_CONNECTIONS: if (!this.listener.allowIncomingConnections()) return;
case require_protocol_MessageIdentifiers.MessageIdentifiers.UNCONNECTED_PING:
const ping = new require_protocol_offline_UnconnectedPing.default(msg);
ping.decode();
const pong = new require_protocol_offline_UnconnectedPong.default();
pong.timestamp = ping.timestamp;
pong.serverGuid = this.listener.getServerGuid();
pong.serverName = this.listener.serverName.toString();
this.listener.sendPacket(pong, rinfo);
break;
case require_protocol_MessageIdentifiers.MessageIdentifiers.OPEN_CONNECTION_REQUEST_1:
if (msg[1 + require_Constants.OFFLINE_MESSAGE_DATA_ID.byteLength] !== 11) {
const response = new require_protocol_connection_IncompatibleProtocolVersion.default();
response.protocol = 11;
response.serverGUID = this.listener.getServerGuid();
this.listener.sendPacket(response, rinfo);
return;
}
const reply1 = new require_protocol_connection_OpenConnectionReply1.default();
reply1.serverGUID = this.listener.getServerGuid();
if (msg.byteLength + 28 > 1492) reply1.mtuSize = require_Constants.MAX_MTU_SIZE;
else reply1.mtuSize = msg.byteLength + 28;
this.listener.sendPacket(reply1, rinfo);
break;
case require_protocol_MessageIdentifiers.MessageIdentifiers.OPEN_CONNECTION_REQUEST_2:
const request = new require_protocol_connection_OpenConnectionRequest2.default(msg);
request.decode();
const addrSession = this.listener.getSessionByAddress(rinfo);
const addressInUse = addrSession !== null && !addrSession.isDisconnected();
const guidSession = this.listener.getSessionByGUID(request.clientGUID);
const guidInUse = guidSession !== null && !guidSession.isDisconnected();
const reply2 = new require_protocol_connection_OpenConnectionReply2.default();
reply2.serverGuid = this.listener.getServerGuid();
reply2.clientAddress = new require_utils_InetAddress.default(rinfo.address, rinfo.port, 4);
reply2.mtuSize = request.mtuSize;
if (addressInUse && guidInUse) {
if (addrSession === guidSession) {
this.listener.sendPacket(reply2, rinfo);
return;
}
this.sendAlreadyConnected(rinfo);
return;
}
if (!addressInUse && guidInUse || addrSession && !guidInUse) {
this.sendAlreadyConnected(rinfo);
return;
}
if (!this.listener.allowIncomingConnections()) {
const str = new _jsprismarine_jsbinaryutils.default();
str.writeByte(require_protocol_MessageIdentifiers.MessageIdentifiers.NO_FREE_INCOMING_CONNECTIONS);
str.write(require_Constants.OFFLINE_MESSAGE_DATA_ID);
str.writeLong(this.listener.getServerGuid());
this.listener.sendBuffer(str.getBuffer(), rinfo);
return;
}
this.listener.addSession(rinfo, request.mtuSize, request.clientGUID);
this.listener.sendPacket(reply2, rinfo);
break;
case require_protocol_MessageIdentifiers.MessageIdentifiers.QUERY:
this.listener.emit("raw", msg, new require_utils_InetAddress.default(rinfo.address, rinfo.port));
break;
default: throw new Error(`Unknown unconnected packet with ID=${msg[0].toString(16)}`);
}
}
sendAlreadyConnected(remote) {
const str = new _jsprismarine_jsbinaryutils.default();
str.writeByte(require_protocol_MessageIdentifiers.MessageIdentifiers.ALREADY_CONNECTED);
str.write(require_Constants.OFFLINE_MESSAGE_DATA_ID);
str.writeLong(this.listener.getServerGuid());
this.listener.sendBuffer(str.getBuffer(), remote);
}
};
//#endregion
exports.OfflineHandler = OfflineHandler;
//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"OfflineHandler.cjs.cjs","names":[],"sources":["../../src/protocol/OfflineHandler.ts"],"sourcesContent":["import { InetAddress, MAX_MTU_SIZE, MINECRAFT_PROTOCOL_VERSION, OFFLINE_MESSAGE_DATA_ID, UDP_HEADER_SIZE } from '../';\n\nimport BinaryStream from '@jsprismarine/jsbinaryutils';\nimport type { RemoteInfo } from 'node:dgram';\nimport type ServerSocket from '../ServerSocket';\nimport { MessageIdentifiers } from './MessageIdentifiers';\nimport IncompatibleProtocolVersion from './connection/IncompatibleProtocolVersion';\nimport OpenConnectionReply1 from './connection/OpenConnectionReply1';\nimport OpenConnectionReply2 from './connection/OpenConnectionReply2';\nimport OpenConnectionRequest2 from './connection/OpenConnectionRequest2';\nimport UnconnectedPing from './offline/UnconnectedPing';\nimport UnconnectedPong from './offline/UnconnectedPong';\n\nexport class OfflineHandler {\n    public constructor(private readonly listener: ServerSocket) {}\n\n    public process(msg: Buffer, rinfo: RemoteInfo): void {\n        switch (msg[0]) {\n            // https://github.com/facebookarchive/RakNet/blob/master/Source/RakPeer.cpp#L4638\n            case MessageIdentifiers.UNCONNECTED_PING_OPEN_CONNECTIONS:\n                if (!this.listener.allowIncomingConnections()) {\n                    return;\n                }\n            case MessageIdentifiers.UNCONNECTED_PING:\n                const ping = new UnconnectedPing(msg);\n                ping.decode();\n\n                const pong = new UnconnectedPong();\n                pong.timestamp = ping.timestamp;\n                pong.serverGuid = this.listener.getServerGuid();\n                pong.serverName = this.listener.serverName.toString();\n                this.listener.sendPacket(pong, rinfo);\n                break;\n            // https://github.com/facebookarchive/RakNet/blob/master/Source/RakPeer.cpp#L5127\n            case MessageIdentifiers.OPEN_CONNECTION_REQUEST_1:\n                // Don't waste resources by allocating a packet if we know version mismatches\n                const remoteProtocol = msg[1 + OFFLINE_MESSAGE_DATA_ID.byteLength];\n                // TODO: setter for custom protocol version\n                if (remoteProtocol !== MINECRAFT_PROTOCOL_VERSION) {\n                    const response = new IncompatibleProtocolVersion();\n                    response.protocol = MINECRAFT_PROTOCOL_VERSION;\n                    response.serverGUID = this.listener.getServerGuid();\n                    this.listener.sendPacket(response, rinfo);\n                    return;\n                }\n\n                const reply1 = new OpenConnectionReply1();\n                reply1.serverGUID = this.listener.getServerGuid();\n\n                if (msg.byteLength + UDP_HEADER_SIZE > MAX_MTU_SIZE) {\n                    reply1.mtuSize = MAX_MTU_SIZE;\n                } else {\n                    reply1.mtuSize = msg.byteLength + UDP_HEADER_SIZE;\n                }\n\n                this.listener.sendPacket(reply1, rinfo);\n                break;\n            // https://github.com/facebookarchive/RakNet/blob/master/Source/RakPeer.cpp#L5198\n            case MessageIdentifiers.OPEN_CONNECTION_REQUEST_2:\n                const request = new OpenConnectionRequest2(msg);\n                request.decode();\n\n                const addrSession = this.listener.getSessionByAddress(rinfo);\n                const addressInUse = addrSession !== null && !addrSession.isDisconnected(); 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