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182 lines
5.1 KiB
JavaScript
182 lines
5.1 KiB
JavaScript
import Core from './core.js'
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const stringKeys = new Set([
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'website',
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'gametype',
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'gamemode',
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'player'
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])
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function normalizeEntry ([key, value]) {
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key = key.toLowerCase()
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const split = key.split('_')
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let keyType = key
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if (split.length === 2 && !isNaN(Number(split[1]))) {
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keyType = split[0]
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}
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if (!stringKeys.has(keyType) && !keyType.includes('name')) { // todo! the latter check might be problematic, fails on key "name_tag_distance_scope"
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if (value.toLowerCase() === 'true') {
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value = true
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} else if (value.toLowerCase() === 'false') {
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value = false
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} else if (value.length && !isNaN(Number(value))) {
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value = Number(value)
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}
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}
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return [key, value]
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}
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export default class gamespy1 extends Core {
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constructor () {
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super()
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this.encoding = 'latin1'
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this.byteorder = 'be'
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}
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async run (state) {
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const raw = await this.sendPacket('\\status\\xserverquery')
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// Convert all keys to lowercase and normalize value types
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const data = Object.fromEntries(Object.entries(raw).map(entry => normalizeEntry(entry)))
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state.raw = data
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if ('hostname' in data) state.name = data.hostname
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if ('mapname' in data) state.map = data.mapname
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if (this.trueTest(data.password)) state.password = true
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if ('maxplayers' in data) state.maxplayers = Number(data.maxplayers)
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if ('hostport' in data) state.gamePort = Number(data.hostport)
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const teamOffByOne = data.gamename === 'bfield1942'
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const playersById = {}
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const teamNamesById = {}
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for (const ident of Object.keys(data)) {
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const split = ident.split('_')
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if (split.length !== 2) continue
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let key = split[0].toLowerCase()
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const id = Number(split[1])
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if (isNaN(id)) continue
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let value = data[ident]
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delete data[ident]
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if (key !== 'team' && key.startsWith('team')) {
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// Info about a team
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if (key === 'teamname') {
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teamNamesById[id] = value
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} else {
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// other team info which we don't track
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}
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} else {
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// Info about a player
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if (!(id in playersById)) playersById[id] = {}
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if (key === 'playername' || key === 'player') {
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key = 'name'
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}
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if (key === 'team' && !isNaN(value)) { // todo! technically, this NaN check isn't needed.
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key = 'teamId'
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value += teamOffByOne ? -1 : 0
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}
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playersById[id][key] = value
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}
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}
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state.raw.teams = teamNamesById
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const players = Object.values(playersById)
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const seenHashes = new Set()
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for (const player of players) {
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// Some servers (bf1942) report the same player multiple times (bug?)
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// Ignore these duplicates
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if (player.keyhash) {
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if (seenHashes.has(player.keyhash)) {
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this.logger.debug('Rejected player with hash ' + player.keyhash + ' (Duplicate keyhash)')
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continue
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} else {
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seenHashes.add(player.keyhash)
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}
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}
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// Convert player's team ID to team name if possible
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if (Object.prototype.hasOwnProperty.call(player, 'teamId')) {
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if (Object.keys(teamNamesById).length) {
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player.team = teamNamesById[player.teamId] || ''
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} else {
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player.team = player.teamId
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delete player.teamId
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}
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}
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state.players.push(player)
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}
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state.numplayers = state.players.length
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}
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async sendPacket (type) {
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let receivedQueryId
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const output = {}
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const parts = new Set()
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let maxPartNum = 0
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return await this.udpSend(type, buffer => {
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const reader = this.reader(buffer)
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const str = reader.string(buffer.length)
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const split = str.split('\\')
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split.shift()
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const data = {}
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while (split.length) {
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const key = split.shift()
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const value = split.shift() || ''
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data[key] = value
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}
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let queryId, partNum
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const partFinal = ('final' in data)
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if (data.queryid) {
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const split = data.queryid.split('.')
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if (split.length >= 2) {
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partNum = Number(split[1])
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}
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queryId = split[0]
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}
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delete data.final
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delete data.queryid
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this.logger.debug('Received part num=' + partNum + ' queryId=' + queryId + ' final=' + partFinal)
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if (queryId) {
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if (receivedQueryId && receivedQueryId !== queryId) {
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this.logger.debug('Rejected packet (Wrong query ID)')
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return
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} else if (!receivedQueryId) {
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receivedQueryId = queryId
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}
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}
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if (!partNum) {
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partNum = parts.size
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this.logger.debug('No part number received (assigned #' + partNum + ')')
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}
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if (parts.has(partNum)) {
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this.logger.debug('Rejected packet (Duplicate part)')
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return
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}
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parts.add(partNum)
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if (partFinal) {
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maxPartNum = partNum
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}
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this.logger.debug('Received part #' + partNum + ' of ' + (maxPartNum || '?'))
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for (const i of Object.keys(data)) {
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output[i] = data[i]
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}
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if (maxPartNum && parts.size === maxPartNum) {
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this.logger.debug('Received all parts')
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this.logger.debug(output)
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return output
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}
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})
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}
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}
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