node-gamedig/protocols/quake2.js

const Core = require('./core');

class Quake2 extends Core {
    constructor() {
        super();
        this.encoding = 'latin1';
        this.delimiter = '\n';
        this.sendHeader = 'status';
        this.responseHeader = 'print';
        this.isQuake1 = false;
    }

    async run(state) {
        const body = await this.udpSend('\xff\xff\xff\xff'+this.sendHeader+'\x00', packet => {
            const reader = this.reader(packet);
            const header = reader.string({length: 4, encoding: 'latin1'});
            if (header !== '\xff\xff\xff\xff') return;
            let type;
            if (this.isQuake1) {
                type = reader.string(this.responseHeader.length);
            } else {
                type = reader.string({encoding: 'latin1'});
            }
            if (type !== this.responseHeader) return;
            return reader.rest();
        });

        const reader = this.reader(body);
        const info = reader.string().split('\\');
        if(info[0] === '') info.shift();

        while(true) {
            const key = info.shift();
            const value = info.shift();
            if(typeof value === 'undefined') break;
            state.raw[key] = value;
        }

        while(!reader.done()) {
            const line = reader.string();
            if(!line || line.charAt(0) === '\0') break;

            const args = [];
            const split = line.split('"');
            split.forEach((part,i) => {
                const inQuote = (i%2 === 1);
                if(inQuote) {
                    args.push(part);
                } else {
                    const splitSpace = part.split(' ');
                    for (const subpart of splitSpace) {
                        if(subpart) args.push(subpart);
                    }
                }
            });

            const player = {};
            if(this.isQuake1) {
                player.id = parseInt(args.shift());
                player.score = parseInt(args.shift());
                player.time = parseInt(args.shift());
                player.ping = parseInt(args.shift());
                player.name = args.shift();
                player.skin = args.shift();
                player.color1 = parseInt(args.shift());
                player.color2 = parseInt(args.shift());
            } else {
                player.frags = parseInt(args.shift());
                player.ping = parseInt(args.shift());
                player.name = args.shift() || '';
                if (!player.name) delete player.name;
                player.address = args.shift() || '';
                if (!player.address) delete player.address;
            }

            (player.ping ? state.players : state.bots).push(player);
        }

        if('g_needpass' in state.raw) state.password = state.raw.g_needpass;
        if('mapname' in state.raw) state.map = state.raw.mapname;
        if('sv_maxclients' in state.raw) state.maxplayers = state.raw.sv_maxclients;
        if('maxclients' in state.raw) state.maxplayers = state.raw.maxclients;
        if('sv_hostname' in state.raw) state.name = state.raw.sv_hostname;
        if('hostname' in state.raw) state.name = state.raw.hostname;
    }
}

module.exports = Quake2;