be39d60705
Temp folder is deleted when minecraft is closed. If the Node.js process ends abruptly, the folder will not delete. As a dirty way to counter this, the directory we extract native files to is cleaned in the preloader. Maybe we'll come up with a more elegant solution in the future.
369 lines
14 KiB
JavaScript
369 lines
14 KiB
JavaScript
/**
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* The initial iteration of this file will not support optional submodules.
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* Support will be added down the line, only top-level modules will recieve optional support.
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*/
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const AdmZip = require('adm-zip')
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const {AssetGuard, Library} = require('./assetguard.js')
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const child_process = require('child_process')
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const ConfigManager = require('./configmanager.js')
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const crypto = require('crypto')
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const fs = require('fs')
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const mkpath = require('mkdirp')
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const os = require('os')
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const path = require('path')
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const rimraf = require('rimraf')
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const {URL} = require('url')
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class ProcessBuilder {
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constructor(gameDirectory, distroServer, versionData, forgeData, authUser){
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this.dir = gameDirectory
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this.server = distroServer
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this.versionData = versionData
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this.forgeData = forgeData
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this.authUser = authUser
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this.fmlDir = path.join(this.dir, 'versions', this.server.id + '.json')
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this.libPath = path.join(this.dir, 'libraries')
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}
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static shouldInclude(mdle){
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//If the module should be included by default
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return mdle.required == null || mdle.required.value == null || mdle.required.value === true || (mdle.required.value === false && (mdle.required.def == null || mdle.required.def === true))
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}
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/**
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* Convienence method to run the functions typically used to build a process.
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*/
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build(){
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const tempNativePath = path.join(os.tmpdir(), ConfigManager.getTempNativeFolder(), crypto.pseudoRandomBytes(16).toString('hex'))
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process.throwDeprecation = true
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const mods = this.resolveDefaultMods()
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this.constructFMLModList(mods, true)
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const args = this.constructJVMArguments(mods, tempNativePath)
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console.log(args)
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const child = child_process.spawn(ConfigManager.getJavaExecutable(), args, {
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cwd: ConfigManager.getGameDirectory()
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})
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child.stdout.on('data', (data) => {
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console.log('Minecraft:', data.toString('utf8'))
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})
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child.stderr.on('data', (data) => {
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console.log('Minecraft:', data.toString('utf8'))
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})
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child.on('close', (code, signal) => {
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console.log('Exited with code', code)
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rimraf(tempNativePath, (err) => {
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if(err){
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console.warn('Error while deleting temp dir', err)
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} else {
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console.log('Temp dir deleted successfully.')
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}
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})
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})
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return child
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}
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resolveDefaultMods(options = {type: 'forgemod'}){
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//Returns array of default forge mods to load.
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const mods = []
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const mdles = this.server.modules
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for(let i=0; i<mdles.length; ++i){
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if(mdles[i].type != null && mdles[i].type === options.type){
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if(ProcessBuilder.shouldInclude(mdles[i])){
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mods.push(mdles[i])
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}
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}
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}
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return mods
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}
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constructFMLModList(mods, save = false){
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const modList = {}
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modList.repositoryRoot = path.join(this.dir, 'modstore')
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const ids = []
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for(let i=0; i<mods.length; ++i){
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ids.push(mods[i].id)
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}
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modList.modRef = ids
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if(save){
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const json = JSON.stringify(modList, null, 4)
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fs.writeFileSync(this.fmlDir, json, 'UTF-8')
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}
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return modList
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}
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/**
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* Construct the argument array that will be passed to the JVM process.
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*
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* @param {Array.<Object>} mods An array of enabled mods which will be launched with this process.
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* @param {string} tempNativePath The path to store the native libraries.
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* @returns {Array.<string>} An array containing the full JVM arguments for this process.
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*/
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constructJVMArguments(mods, tempNativePath){
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let args = ['-Xmx' + ConfigManager.getMaxRAM(),
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'-Xms' + ConfigManager.getMinRAM(),,
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'-Djava.library.path=' + tempNativePath,
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'-cp',
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this.classpathArg(mods, tempNativePath).join(';'),
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this.forgeData.mainClass]
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// For some reason this will add an undefined value unless
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// the delete count is 1. I suspect this is unintended behavior
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// by the function.. need to keep an eye on this.
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args.splice(2, 1, ...ConfigManager.getJVMOptions())
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args = args.concat(this._resolveForgeArgs())
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return args
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}
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/**
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* Resolve the arguments required by forge.
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*
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* @returns {Array.<string>} An array containing the arguments required by forge.
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*/
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_resolveForgeArgs(){
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const mcArgs = this.forgeData.minecraftArguments.split(' ')
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const argDiscovery = /\${*(.*)}/
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// Replace the declared variables with their proper values.
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for(let i=0; i<mcArgs.length; ++i){
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if(argDiscovery.test(mcArgs[i])){
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const identifier = mcArgs[i].match(argDiscovery)[1]
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let val = null;
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switch(identifier){
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case 'auth_player_name':
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val = this.authUser.displayName
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break
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case 'version_name':
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//val = versionData.id
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val = this.server.id
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break
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case 'game_directory':
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val = this.dir
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break
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case 'assets_root':
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val = path.join(this.dir, 'assets')
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break
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case 'assets_index_name':
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val = this.versionData.assets
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break
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case 'auth_uuid':
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val = this.authUser.uuid
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break
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case 'auth_access_token':
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val = this.authUser.accessToken
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break
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case 'user_type':
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val = 'MOJANG'
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break
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case 'version_type':
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val = this.versionData.type
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break
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}
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if(val != null){
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mcArgs[i] = val;
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}
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}
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}
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mcArgs.push('--modListFile')
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mcArgs.push('absolute:' + this.fmlDir)
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// Prepare game resolution
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if(ConfigManager.isFullscreen()){
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mcArgs.unshift('--fullscreen')
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} else {
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mcArgs.unshift(ConfigManager.getGameWidth())
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mcArgs.unshift('--width')
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mcArgs.unshift(ConfigManager.getGameHeight())
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mcArgs.unshift('--height')
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}
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// Prepare autoconnect
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if(ConfigManager.isAutoConnect() && this.server.autoconnect){
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const serverURL = new URL('my://' + this.server.server_ip)
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mcArgs.unshift(serverURL.hostname)
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mcArgs.unshift('--server')
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if(serverURL.port){
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mcArgs.unshift(serverURL.port)
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mcArgs.unshift('--port')
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}
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}
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return mcArgs
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}
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/**
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* Resolve the full classpath argument list for this process. This method will resolve all Mojang-declared
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* libraries as well as the libraries declared by the server. Since mods are permitted to declare libraries,
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* this method requires all enabled mods as an input
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*
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* @param {Array.<Object>} mods An array of enabled mods which will be launched with this process.
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* @param {string} tempNativePath The path to store the native libraries.
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* @returns {Array.<string>} An array containing the paths of each library required by this process.
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*/
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classpathArg(mods, tempNativePath){
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let cpArgs = []
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// Add the version.jar to the classpath.
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const version = this.versionData.id
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cpArgs.push(path.join(this.dir, 'versions', version, version + '.jar'))
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// Resolve the Mojang declared libraries.
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const mojangLibs = this._resolveMojangLibraries(tempNativePath)
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cpArgs = cpArgs.concat(mojangLibs)
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// Resolve the server declared libraries.
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const servLibs = this._resolveServerLibraries(mods)
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cpArgs = cpArgs.concat(servLibs)
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return cpArgs
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}
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/**
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* Resolve the libraries defined by Mojang's version data. This method will also extract
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* native libraries and point to the correct location for its classpath.
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*
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* TODO - clean up function
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*
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* @param {string} tempNativePath The path to store the native libraries.
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* @returns {Array.<string>} An array containing the paths of each library mojang declares.
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*/
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_resolveMojangLibraries(tempNativePath){
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const libs = []
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const libArr = this.versionData.libraries
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mkpath.sync(tempNativePath)
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for(let i=0; i<libArr.length; i++){
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const lib = libArr[i]
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if(Library.validateRules(lib.rules)){
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if(lib.natives == null){
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const dlInfo = lib.downloads
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const artifact = dlInfo.artifact
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const to = path.join(this.libPath, artifact.path)
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libs.push(to)
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} else {
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// Extract the native library.
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const natives = lib.natives
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const extractInst = lib.extract
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const exclusionArr = extractInst.exclude
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const opSys = Library.mojangFriendlyOS()
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const indexId = natives[opSys]
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const dlInfo = lib.downloads
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const classifiers = dlInfo.classifiers
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const artifact = classifiers[indexId]
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// Location of native zip.
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const to = path.join(this.libPath, artifact.path)
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let zip = new AdmZip(to)
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let zipEntries = zip.getEntries()
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// Unzip the native zip.
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for(let i=0; i<zipEntries.length; i++){
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const fileName = zipEntries[i].entryName
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let shouldExclude = false
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// Exclude noted files.
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exclusionArr.forEach(function(exclusion){
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if(fileName.indexOf(exclusion) > -1){
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shouldExclude = true
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}
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})
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// Extract the file.
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if(!shouldExclude){
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fs.writeFile(path.join(tempNativePath, fileName), zipEntries[i].getData(), (err) => {
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if(err){
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console.error('Error while extracting native library:', err)
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}
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})
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}
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}
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}
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}
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}
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return libs
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}
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/**
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* Resolve the libraries declared by this server in order to add them to the classpath.
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* This method will also check each enabled mod for libraries, as mods are permitted to
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* declare libraries.
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*
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* @param {Array.<Object>} mods An array of enabled mods which will be launched with this process.
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* @returns {Array.<string>} An array containing the paths of each library this server requires.
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*/
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_resolveServerLibraries(mods){
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const mdles = this.server.modules
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let libs = []
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// Locate Forge/Libraries
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for(let i=0; i<mdles.length; i++){
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if(mdles[i].type != null && (mdles[i].type === 'forge-hosted' || mdles[i].type === 'library')){
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let lib = mdles[i]
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libs.push(path.join(this.libPath, lib.artifact.path == null ? AssetGuard._resolvePath(lib.id, lib.artifact.extension) : lib.artifact.path))
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if(lib.sub_modules != null){
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const res = this._resolveModuleLibraries(lib)
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if(res.length > 0){
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libs = libs.concat(res)
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}
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}
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}
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}
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//Check for any libraries in our mod list.
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for(let i=0; i<mods.length; i++){
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if(mods.sub_modules != null){
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const res = this._resolveModuleLibraries(mods[i])
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if(res.length > 0){
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libs = libs.concat(res)
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}
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}
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}
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return libs
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}
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/**
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* Recursively resolve the path of each library required by this module.
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*
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* @param {Object} mdle A module object from the server distro index.
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* @returns {Array.<string>} An array containing the paths of each library this module requires.
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*/
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_resolveModuleLibraries(mdle){
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if(mdle.sub_modules == null){
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return []
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}
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let libs = []
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for(let i=0; i<mdle.sub_modules.length; i++){
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const sm = mdle.sub_modules[i]
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if(sm.type != null && sm.type == 'library'){
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libs.push(path.join(this.libPath, sm.artifact.path == null ? AssetGuard._resolvePath(sm.id, sm.artifact.extension) : sm.artifact.path))
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}
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// If this module has submodules, we need to resolve the libraries for those.
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// To avoid unnecessary recursive calls, base case is checked here.
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if(mdle.sub_modules != null){
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const res = this._resolveModuleLibraries(sm)
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if(res.length > 0){
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libs = libs.concat(res)
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}
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}
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}
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return libs
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}
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}
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module.exports = ProcessBuilder |