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Reduced chance of protocol collisions between gamespy3 and minecraftbedrock (2.0.27)

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This commit is contained in:
Michael Morrison 2021-02-12 11:36:51 -06:00
parent 883700d7dd
commit 052736edd7
6 changed files with 41 additions and 21 deletions
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3
CHANGELOG.md
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@ -1,3 +1,6 @@
### 2.0.27
* Reduced chance of protocol collisions between gamespy3 and minecraftbedrock
### 2.0.26
* Added support for the native minecraft bedrock protocol, since some
bedrock servers apparently do not respond to the gamespy3 protocol.

2
package.json
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@ -24,7 +24,7 @@
],
"main": "lib/index.js",
"author": "GameDig Contributors",
"version": "2.0.26",
"version": "2.0.27",
"repository": {
"type": "git",
"url": "https://github.com/gamedig/node-gamedig.git"

4
protocols/core.js
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@ -35,7 +35,9 @@ class Core extends EventEmitter {
}
this.logger.prefix = 'Q#' + (uid++);
this.logger.debug("Query is running with options:", this.options);
this.logger.debug("Starting");
this.logger.debug("Protocol: " + this.constructor.name);
this.logger.debug("Options:", this.options);
let abortCall = null;
this.abortedPromise = new Promise((resolve,reject) => {

10
protocols/gamespy3.js
View file

@ -148,9 +148,15 @@ class Gamespy3 extends Core {
return await this.udpSend(b,(buffer) => {
const reader = this.reader(buffer);
const iType = reader.uint(1);
if(iType !== type) return;
if(iType !== type) {
this.logger.debug('Skipping packet, type mismatch');
return;
}
const iSessionId = reader.uint(4);
if(iSessionId !== this.sessionId) return;
if(iSessionId !== this.sessionId) {
this.logger.debug('Skipping packet, session id mismatch');
return;
}
if(!assemble) {
return reader.rest();

3
protocols/minecraft.js
View file

@ -81,7 +81,8 @@ class Minecraft extends Core {
if (gamespyState) {
if (gamespyState.name) state.name = gamespyState.name;
if (gamespyState.maxplayers) state.maxplayers = gamespyState.maxplayers;
if (gamespyState.players) state.players = gamespyState.players;
if (gamespyState.players.length) state.players = gamespyState.players;
else if (gamespyState.raw.numplayers) state.players = parseInt(gamespyState.raw.numplayers);
}
// remove dupe spaces from name
state.name = state.name.replace(/\s+/g, ' ');

40
protocols/minecraftbedrock.js
View file

@ -9,7 +9,7 @@ class MinecraftBedrock extends Core {
async run(state) {
const bufs = [
Buffer.from([0x01]), // Message ID, ID_UNCONNECTED_PING
Buffer.from('0000000000000000', 'hex'), // Nonce / timestamp
Buffer.from('1122334455667788', 'hex'), // Nonce / timestamp
Buffer.from('00ffff00fefefefefdfdfdfd12345678', 'hex'), // Magic
Buffer.from('0000000000000000', 'hex') // Cliend GUID
];
@ -19,17 +19,26 @@ class MinecraftBedrock extends Core {
const messageId = reader.uint(1);
if (messageId !== 0x1c) {
throw new Error('Invalid message id');
this.logger.debug('Skipping packet, invalid message id');
return;
}
const nonce = reader.part(8).toString('hex'); // should match the nonce we sent
this.logger.debug('Nonce: ' + nonce);
if (nonce !== '1122334455667788') {
this.logger.debug('Skipping packet, invalid nonce');
return;
}
// These 8 bytes are identical to the serverId string we receive in decimal below
reader.skip(8);
const magic = reader.part(16).toString('hex');
this.logger.debug('Magic value: ' + magic);
if (magic !== '00ffff00fefefefefdfdfdfd12345678') {
this.logger.debug('Skipping packet, invalid magic');
return;
}
const statusLen = reader.uint(2);
if (reader.remaining() !== statusLen) {
@ -40,23 +49,22 @@ class MinecraftBedrock extends Core {
this.logger.debug('Raw status str: ' + statusStr);
const split = statusStr.split(';');
if (split.length < 12) {
if (split.length < 6) {
throw new Error('Missing enough chunks in status str');
}
let i = 0;
state.raw.edition = split[i++];
state.name = split[i++];
state.raw.protocolVersion = split[i++];
state.raw.mcVersion = split[i++];
state.players = parseInt(split[i++]);
state.maxplayers = parseInt(split[i++]);
state.raw.serverId = split[i++];
state.map = split[i++];
state.raw.gameMode = split[i++];
state.raw.nintendoOnly = !!parseInt(split[i++]);
state.raw.ipv4Port = split[i++];
state.raw.ipv6Port = split[i++];
state.raw.edition = split.shift();
state.name = split.shift();
state.raw.protocolVersion = split.shift();
state.raw.mcVersion = split.shift();
state.players = parseInt(split.shift());
state.maxplayers = parseInt(split.shift());
if (split.length) state.raw.serverId = split.shift();
if (split.length) state.map = split.shift();
if (split.length) state.raw.gameMode = split.shift();
if (split.length) state.raw.nintendoOnly = !!parseInt(split.shift());
if (split.length) state.raw.ipv4Port = split.shift();
if (split.length) state.raw.ipv6Port = split.shift();
return true;
});