app/assets/js/assetguard.js

@@ -6,6 +6,8 @@ const crypto        = require('crypto')
 const EventEmitter  = require('events')
 const fs            = require('fs-extra')
 const { LoggerUtil } = require('helios-core')
+const { DistributionAPI } = require('helios-core/common')
+const { Type }      = require('helios-distribution-types')
 const nodeDiskInfo  = require('node-disk-info')
 const StreamZip     = require('node-stream-zip')
 const path          = require('path')
@@ -14,6 +16,8 @@ const request       = require('request')
 const tar           = require('tar-fs')
 const zlib          = require('zlib')
 
+const ConfigManager = require('./configmanager')
+const { REMOTE_DISTRO_URL } = require('./distromanager')
 const isDev         = require('./isdev')
 
 // Classes
@@ -38,6 +42,86 @@ class Asset {
     }
 }
 
+/** Class representing a mojang library. */
+class Library extends Asset {
+
+    /**
+     * Converts the process.platform OS names to match mojang's OS names.
+     */
+    static mojangFriendlyOS(){
+        const opSys = process.platform
+        if (opSys === 'darwin') {
+            return 'osx'
+        } else if (opSys === 'win32'){
+            return 'windows'
+        } else if (opSys === 'linux'){
+            return 'linux'
+        } else {
+            return 'unknown_os'
+        }
+    }
+
+    /**
+     * Checks whether or not a library is valid for download on a particular OS, following
+     * the rule format specified in the mojang version data index. If the allow property has
+     * an OS specified, then the library can ONLY be downloaded on that OS. If the disallow
+     * property has instead specified an OS, the library can be downloaded on any OS EXCLUDING
+     * the one specified.
+     * 
+     * If the rules are undefined, the natives property will be checked for a matching entry
+     * for the current OS.
+     * 
+     * @param {Array.<Object>} rules The Library's download rules.
+     * @param {Object} natives The Library's natives object.
+     * @returns {boolean} True if the Library follows the specified rules, otherwise false.
+     */
+    static validateRules(rules, natives){
+        if(rules == null) {
+            if(natives == null) {
+                return true
+            } else {
+                return natives[Library.mojangFriendlyOS()] != null
+            }
+        }
+
+        for(let rule of rules){
+            const action = rule.action
+            const osProp = rule.os
+            if(action != null && osProp != null){
+                const osName = osProp.name
+                const osMoj = Library.mojangFriendlyOS()
+                if(action === 'allow'){
+                    return osName === osMoj
+                } else if(action === 'disallow'){
+                    return osName !== osMoj
+                }
+            }
+        }
+        return true
+    }
+}
+
+class DistroModule extends Asset {
+
+    /**
+     * Create a DistroModule. This is for processing,
+     * not equivalent to the module objects in the
+     * distro index.
+     * 
+     * @param {any} id The id of the asset.
+     * @param {string} hash The hash value of the asset.
+     * @param {number} size The size in bytes of the asset.
+     * @param {string} from The url where the asset can be found.
+     * @param {string} to The absolute local file path of the asset.
+     * @param {string} type The the module type.
+     */
+    constructor(id, hash, size, from, to, type){
+        super(id, hash, size, from, to)
+        this.type = type
+    }
+
+}
+
 /**
  * Class representing a download tracker. This is used to store meta data
  * about a download queue, including the queue itself.
@@ -1068,10 +1152,416 @@ class AssetGuard extends EventEmitter {
         })
     }
 
+    /**
+     * Function which finalizes the forge installation process. This creates a 'version'
+     * instance for forge and saves its version.json file into that instance. If that
+     * instance already exists, the contents of the version.json file are read and returned
+     * in a promise.
+     * 
+     * @param {Asset} asset The Asset object representing Forge.
+     * @param {string} commonPath The common path for shared game files.
+     * @returns {Promise.<Object>} A promise which resolves to the contents of forge's version.json.
+     */
+    static _finalizeForgeAsset(asset, commonPath){
+        return new Promise((resolve, reject) => {
+            fs.readFile(asset.to, (err, data) => {
+                const zip = new AdmZip(data)
+                const zipEntries = zip.getEntries()
+
+                for(let i=0; i<zipEntries.length; i++){
+                    if(zipEntries[i].entryName === 'version.json'){
+                        const forgeVersion = JSON.parse(zip.readAsText(zipEntries[i]))
+                        const versionPath = path.join(commonPath, 'versions', forgeVersion.id)
+                        const versionFile = path.join(versionPath, forgeVersion.id + '.json')
+                        if(!fs.existsSync(versionFile)){
+                            fs.ensureDirSync(versionPath)
+                            fs.writeFileSync(path.join(versionPath, forgeVersion.id + '.json'), zipEntries[i].getData())
+                            resolve(forgeVersion)
+                        } else {
+                            //Read the saved file to allow for user modifications.
+                            resolve(JSON.parse(fs.readFileSync(versionFile, 'utf-8')))
+                        }
+                        return
+                    }
+                }
+                //We didn't find forge's version.json.
+                reject('Unable to finalize Forge processing, version.json not found! Has forge changed their format?')
+            })
+        })
+    }
+
     // #endregion
 
     // #endregion
 
+    // Validation Functions
+    // #region
+
+    /**
+     * Loads the version data for a given minecraft version.
+     * 
+     * @param {string} version The game version for which to load the index data.
+     * @param {boolean} force Optional. If true, the version index will be downloaded even if it exists locally. Defaults to false.
+     * @returns {Promise.<Object>} Promise which resolves to the version data object.
+     */
+    loadVersionData(version, force = false){
+        const self = this
+        return new Promise(async (resolve, reject) => {
+            const versionPath = path.join(self.commonPath, 'versions', version)
+            const versionFile = path.join(versionPath, version + '.json')
+            if(!fs.existsSync(versionFile) || force){
+                const url = await self._getVersionDataUrl(version)
+                //This download will never be tracked as it's essential and trivial.
+                AssetGuard.logger.info('Preparing download of ' + version + ' assets.')
+                fs.ensureDirSync(versionPath)
+                const stream = request(url).pipe(fs.createWriteStream(versionFile))
+                stream.on('finish', () => {
+                    resolve(JSON.parse(fs.readFileSync(versionFile)))
+                })
+            } else {
+                resolve(JSON.parse(fs.readFileSync(versionFile)))
+            }
+        })
+    }
+
+    /**
+     * Parses Mojang's version manifest and retrieves the url of the version
+     * data index.
+     * 
+     * @param {string} version The version to lookup.
+     * @returns {Promise.<string>} Promise which resolves to the url of the version data index.
+     * If the version could not be found, resolves to null.
+     */
+    _getVersionDataUrl(version){
+        return new Promise((resolve, reject) => {
+            request('https://launchermeta.mojang.com/mc/game/version_manifest.json', (error, resp, body) => {
+                if(error){
+                    reject(error)
+                } else {
+                    const manifest = JSON.parse(body)
+
+                    for(let v of manifest.versions){
+                        if(v.id === version){
+                            resolve(v.url)
+                        }
+                    }
+
+                    resolve(null)
+                }
+            })
+        })
+    }
+
+
+    // Asset (Category=''') Validation Functions
+    // #region
+
+    /**
+     * Public asset validation function. This function will handle the validation of assets.
+     * It will parse the asset index specified in the version data, analyzing each
+     * asset entry. In this analysis it will check to see if the local file exists and is valid.
+     * If not, it will be added to the download queue for the 'assets' identifier.
+     * 
+     * @param {Object} versionData The version data for the assets.
+     * @param {boolean} force Optional. If true, the asset index will be downloaded even if it exists locally. Defaults to false.
+     * @returns {Promise.<void>} An empty promise to indicate the async processing has completed.
+     */
+    validateAssets(versionData, force = false){
+        const self = this
+        return new Promise((resolve, reject) => {
+            self._assetChainIndexData(versionData, force).then(() => {
+                resolve()
+            })
+        })
+    }
+
+    //Chain the asset tasks to provide full async. The below functions are private.
+    /**
+     * Private function used to chain the asset validation process. This function retrieves
+     * the index data.
+     * @param {Object} versionData
+     * @param {boolean} force
+     * @returns {Promise.<void>} An empty promise to indicate the async processing has completed.
+     */
+    _assetChainIndexData(versionData, force = false){
+        const self = this
+        return new Promise((resolve, reject) => {
+            //Asset index constants.
+            const assetIndex = versionData.assetIndex
+            const name = assetIndex.id + '.json'
+            const indexPath = path.join(self.commonPath, 'assets', 'indexes')
+            const assetIndexLoc = path.join(indexPath, name)
+
+            let data = null
+            if(!fs.existsSync(assetIndexLoc) || force){
+                AssetGuard.logger.info('Downloading ' + versionData.id + ' asset index.')
+                fs.ensureDirSync(indexPath)
+                const stream = request(assetIndex.url).pipe(fs.createWriteStream(assetIndexLoc))
+                stream.on('finish', () => {
+                    data = JSON.parse(fs.readFileSync(assetIndexLoc, 'utf-8'))
+                    self._assetChainValidateAssets(versionData, data).then(() => {
+                        resolve()
+                    })
+                })
+            } else {
+                data = JSON.parse(fs.readFileSync(assetIndexLoc, 'utf-8'))
+                self._assetChainValidateAssets(versionData, data).then(() => {
+                    resolve()
+                })
+            }
+        })
+    }
+
+    /**
+     * Private function used to chain the asset validation process. This function processes
+     * the assets and enqueues missing or invalid files.
+     * @param {Object} versionData
+     * @param {boolean} force
+     * @returns {Promise.<void>} An empty promise to indicate the async processing has completed.
+     */
+    _assetChainValidateAssets(versionData, indexData){
+        const self = this
+        return new Promise((resolve, reject) => {
+
+            //Asset constants
+            const resourceURL = 'https://resources.download.minecraft.net/'
+            const localPath = path.join(self.commonPath, 'assets')
+            const objectPath = path.join(localPath, 'objects')
+
+            const assetDlQueue = []
+            let dlSize = 0
+            let acc = 0
+            const total = Object.keys(indexData.objects).length
+            //const objKeys = Object.keys(data.objects)
+            async.forEachOfLimit(indexData.objects, 10, (value, key, cb) => {
+                acc++
+                self.emit('progress', 'assets', acc, total)
+                const hash = value.hash
+                const assetName = path.join(hash.substring(0, 2), hash)
+                const urlName = hash.substring(0, 2) + '/' + hash
+                const ast = new Asset(key, hash, value.size, resourceURL + urlName, path.join(objectPath, assetName))
+                if(!AssetGuard._validateLocal(ast.to, 'sha1', ast.hash)){
+                    dlSize += (ast.size*1)
+                    assetDlQueue.push(ast)
+                }
+                cb()
+            }, (err) => {
+                self.assets = new DLTracker(assetDlQueue, dlSize)
+                resolve()
+            })
+        })
+    }
+    
+    // #endregion
+
+    // Library (Category=''') Validation Functions
+    // #region
+
+    /**
+     * Public library validation function. This function will handle the validation of libraries.
+     * It will parse the version data, analyzing each library entry. In this analysis, it will
+     * check to see if the local file exists and is valid. If not, it will be added to the download
+     * queue for the 'libraries' identifier.
+     * 
+     * @param {Object} versionData The version data for the assets.
+     * @returns {Promise.<void>} An empty promise to indicate the async processing has completed.
+     */
+    validateLibraries(versionData){
+        const self = this
+        return new Promise((resolve, reject) => {
+
+            const libArr = versionData.libraries
+            const libPath = path.join(self.commonPath, 'libraries')
+
+            const libDlQueue = []
+            let dlSize = 0
+
+            //Check validity of each library. If the hashs don't match, download the library.
+            async.eachLimit(libArr, 5, (lib, cb) => {
+                if(Library.validateRules(lib.rules, lib.natives)){
+                    let artifact = (lib.natives == null) ? lib.downloads.artifact : lib.downloads.classifiers[lib.natives[Library.mojangFriendlyOS()].replace('${arch}', process.arch.replace('x', ''))]
+                    const libItm = new Library(lib.name, artifact.sha1, artifact.size, artifact.url, path.join(libPath, artifact.path))
+                    if(!AssetGuard._validateLocal(libItm.to, 'sha1', libItm.hash)){
+                        dlSize += (libItm.size*1)
+                        libDlQueue.push(libItm)
+                    }
+                }
+                cb()
+            }, (err) => {
+                self.libraries = new DLTracker(libDlQueue, dlSize)
+                resolve()
+            })
+        })
+    }
+
+    // #endregion
+
+    // Miscellaneous (Category=files) Validation Functions
+    // #region
+
+    /**
+     * Public miscellaneous mojang file validation function. These files will be enqueued under
+     * the 'files' identifier.
+     * 
+     * @param {Object} versionData The version data for the assets.
+     * @returns {Promise.<void>} An empty promise to indicate the async processing has completed.
+     */
+    validateMiscellaneous(versionData){
+        const self = this
+        return new Promise(async (resolve, reject) => {
+            await self.validateClient(versionData)
+            await self.validateLogConfig(versionData)
+            resolve()
+        })
+    }
+
+    /**
+     * Validate client file - artifact renamed from client.jar to '{version}'.jar.
+     * 
+     * @param {Object} versionData The version data for the assets.
+     * @param {boolean} force Optional. If true, the asset index will be downloaded even if it exists locally. Defaults to false.
+     * @returns {Promise.<void>} An empty promise to indicate the async processing has completed.
+     */
+    validateClient(versionData, force = false){
+        const self = this
+        return new Promise((resolve, reject) => {
+            const clientData = versionData.downloads.client
+            const version = versionData.id
+            const targetPath = path.join(self.commonPath, 'versions', version)
+            const targetFile = version + '.jar'
+
+            let client = new Asset(version + ' client', clientData.sha1, clientData.size, clientData.url, path.join(targetPath, targetFile))
+
+            if(!AssetGuard._validateLocal(client.to, 'sha1', client.hash) || force){
+                self.files.dlqueue.push(client)
+                self.files.dlsize += client.size*1
+                resolve()
+            } else {
+                resolve()
+            }
+        })
+    }
+
+    /**
+     * Validate log config.
+     * 
+     * @param {Object} versionData The version data for the assets.
+     * @param {boolean} force Optional. If true, the asset index will be downloaded even if it exists locally. Defaults to false.
+     * @returns {Promise.<void>} An empty promise to indicate the async processing has completed.
+     */
+    validateLogConfig(versionData){
+        const self = this
+        return new Promise((resolve, reject) => {
+            const client = versionData.logging.client
+            const file = client.file
+            const targetPath = path.join(self.commonPath, 'assets', 'log_configs')
+
+            let logConfig = new Asset(file.id, file.sha1, file.size, file.url, path.join(targetPath, file.id))
+
+            if(!AssetGuard._validateLocal(logConfig.to, 'sha1', logConfig.hash)){
+                self.files.dlqueue.push(logConfig)
+                self.files.dlsize += logConfig.size*1
+                resolve()
+            } else {
+                resolve()
+            }
+        })
+    }
+
+    // #endregion
+
+    // Distribution (Category=forge) Validation Functions
+    // #region
+
+    /**
+     * Validate the distribution.
+     * 
+     * @param {Server} server The Server to validate.
+     * @returns {Promise.<Object>} A promise which resolves to the server distribution object.
+     */
+    validateDistribution(server){
+        const self = this
+        return new Promise((resolve, reject) => {
+            self.forge = self._parseDistroModules(server.getModules(), server.getMinecraftVersion(), server.getID())
+            resolve(server)
+        })
+    }
+
+    _parseDistroModules(modules, version, servid){
+        let alist = []
+        let asize = 0
+        for(let ob of modules){
+            let obArtifact = ob.getArtifact()
+            let obPath = obArtifact.getPath()
+            let artifact = new DistroModule(ob.getIdentifier(), obArtifact.getHash(), obArtifact.getSize(), obArtifact.getURL(), obPath, ob.getType())
+            const validationPath = obPath.toLowerCase().endsWith('.pack.xz') ? obPath.substring(0, obPath.toLowerCase().lastIndexOf('.pack.xz')) : obPath
+            if(!AssetGuard._validateLocal(validationPath, 'MD5', artifact.hash)){
+                asize += artifact.size*1
+                alist.push(artifact)
+                if(validationPath !== obPath) this.extractQueue.push(obPath)
+            }
+            //Recursively process the submodules then combine the results.
+            if(ob.getSubModules() != null){
+                let dltrack = this._parseDistroModules(ob.getSubModules(), version, servid)
+                asize += dltrack.dlsize*1
+                alist = alist.concat(dltrack.dlqueue)
+            }
+        }
+
+        return new DLTracker(alist, asize)
+    }
+
+    /**
+     * Loads Forge's version.json data into memory for the specified server id.
+     * 
+     * @param {string} server The Server to load Forge data for.
+     * @returns {Promise.<Object>} A promise which resolves to Forge's version.json data.
+     */
+    loadForgeData(server){
+        const self = this
+        return new Promise(async (resolve, reject) => {
+            const modules = server.getModules()
+            for(let ob of modules){
+                const type = ob.getType()
+                if(type === Type.ForgeHosted || type === Type.Forge){
+                    if(Util.isForgeGradle3(server.getMinecraftVersion(), ob.getVersion())){
+                        // Read Manifest
+                        for(let sub of ob.getSubModules()){
+                            if(sub.getType() === Type.VersionManifest){
+                                resolve(JSON.parse(fs.readFileSync(sub.getArtifact().getPath(), 'utf-8')))
+                                return
+                            }
+                        }
+                        reject('No forge version manifest found!')
+                        return
+                    } else {
+                        let obArtifact = ob.getArtifact()
+                        let obPath = obArtifact.getPath()
+                        let asset = new DistroModule(ob.getIdentifier(), obArtifact.getHash(), obArtifact.getSize(), obArtifact.getURL(), obPath, type)
+                        try {
+                            let forgeData = await AssetGuard._finalizeForgeAsset(asset, self.commonPath)
+                            resolve(forgeData)
+                        } catch (err){
+                            reject(err)
+                        }
+                        return
+                    }
+                }
+            }
+            reject('No forge module found!')
+        })
+    }
+
+    _parseForgeLibraries(){
+        /* TODO
+        * Forge asset validations are already implemented. When there's nothing much
+        * to work on, implement forge downloads using forge's version.json. This is to
+        * have the code on standby if we ever need it (since it's half implemented already).
+        */
+    }
+
+    // #endregion
+
     // Java (Category=''') Validation (download) Functions
     // #region
 
@@ -1154,6 +1644,43 @@ class AssetGuard extends EventEmitter {
         }
     }
 
+    // _enqueueMojangJRE(dir){
+    //     return new Promise((resolve, reject) => {
+    //         // Mojang does not host the JRE for linux.
+    //         if(process.platform === 'linux'){
+    //             resolve(false)
+    //         }
+    //         AssetGuard.loadMojangLauncherData().then(data => {
+    //             if(data != null) {
+
+    //                 try {
+    //                     const mJRE = data[Library.mojangFriendlyOS()]['64'].jre
+    //                     const url = mJRE.url
+
+    //                     request.head(url, (err, resp, body) => {
+    //                         if(err){
+    //                             resolve(false)
+    //                         } else {
+    //                             const name = url.substring(url.lastIndexOf('/')+1)
+    //                             const fDir = path.join(dir, name)
+    //                             const jre = new Asset('jre' + mJRE.version, mJRE.sha1, resp.headers['content-length'], url, fDir)
+    //                             this.java = new DLTracker([jre], jre.size, a => {
+    //                                 fs.readFile(a.to, (err, data) => {
+    //                                     // Data buffer needs to be decompressed from lzma,
+    //                                     // not really possible using node.js
+    //                                 })
+    //                             })
+    //                         }
+    //                     })
+    //                 } catch (err){
+    //                     resolve(false)
+    //                 }
+
+    //             }
+    //         })
+    //     })
+    // }
+
 
     // #endregion
 
@@ -1313,11 +1840,63 @@ class AssetGuard extends EventEmitter {
         })
     }
 
+    async validateEverything(serverid, dev = false){
+
+        try {
+            if(!ConfigManager.isLoaded()){
+                ConfigManager.load()
+            }
+            const api = new DistributionAPI(
+                ConfigManager.getLauncherDirectory(),
+                REMOTE_DISTRO_URL,
+                dev
+            )
+
+            const dI = await api.getDistributionLocalLoadOnly()
+    
+            // TODO replace all
+            const server = dI.getServer(serverid)
+    
+            // Validate Everything
+    
+            await this.validateDistribution(server)
+            this.emit('validate', 'distribution')
+            const versionData = await this.loadVersionData(server.getMinecraftVersion())
+            this.emit('validate', 'version')
+            await this.validateAssets(versionData)
+            this.emit('validate', 'assets')
+            await this.validateLibraries(versionData)
+            this.emit('validate', 'libraries')
+            await this.validateMiscellaneous(versionData)
+            this.emit('validate', 'files')
+            await this.processDlQueues()
+            //this.emit('complete', 'download')
+            const forgeData = await this.loadForgeData(server)
+        
+            return {
+                versionData,
+                forgeData
+            }
+
+        } catch (err){
+            return {
+                versionData: null,
+                forgeData: null,
+                error: err
+            }
+        }
+        
+
+    }
+
     // #endregion
 
 }
 
 module.exports = {
+    Util,
     AssetGuard,
-    JavaGuard
+    JavaGuard,
+    Asset,
+    Library
 }

app/assets/js/distromanager.js

@@ -6,8 +6,6 @@ exports.REMOTE_DISTRO_URL = 'http://mc.westeroscraft.com/WesterosCraftLauncher/d
 
 const api = new DistributionAPI(
     ConfigManager.getLauncherDirectory(),
-    null, // Injected forcefully by the preloader.
-    null, // Injected forcefully by the preloader.
     exports.REMOTE_DISTRO_URL,
     false
 )

app/assets/js/preloader.js

@@ -17,11 +17,6 @@ logger.info('Loading..')
 // Load ConfigManager
 ConfigManager.load()
 
-// Yuck!
-// TODO Fix this
-DistroAPI['commonDir'] = ConfigManager.getCommonDirectory()
-DistroAPI['instanceDir'] = ConfigManager.getInstanceDirectory()
-
 // Load Strings
 LangLoader.loadLanguage('en_US')
 

app/assets/js/processbuilder.js

@@ -7,6 +7,7 @@ const { getMojangOS, isLibraryCompatible, mcVersionAtLeast }  = require('helios-
 const { Type }              = require('helios-distribution-types')
 const os                    = require('os')
 const path                  = require('path')
+const { URL }               = require('url')
 
 const ConfigManager            = require('./configmanager')
 
@@ -15,7 +16,7 @@ const logger = LoggerUtil.getLogger('ProcessBuilder')
 class ProcessBuilder {
 
     constructor(distroServer, versionData, forgeData, authUser, launcherVersion){
-        this.gameDir = path.join(ConfigManager.getInstanceDirectory(), distroServer.rawServer.id)
+        this.gameDir = path.join(ConfigManager.getInstanceDirectory(), distroServer.getID())
         this.commonDir = ConfigManager.getCommonDirectory()
         this.server = distroServer
         this.versionData = versionData
@@ -40,10 +41,10 @@ class ProcessBuilder {
         process.throwDeprecation = true
         this.setupLiteLoader()
         logger.info('Using liteloader:', this.usingLiteLoader)
-        const modObj = this.resolveModConfiguration(ConfigManager.getModConfiguration(this.server.rawServer.id).mods, this.server.modules)
+        const modObj = this.resolveModConfiguration(ConfigManager.getModConfiguration(this.server.getID()).mods, this.server.getModules())
         
         // Mod list below 1.13
-        if(!mcVersionAtLeast('1.13', this.server.rawServer.minecraftVersion)){
+        if(!mcVersionAtLeast('1.13', this.server.getMinecraftVersion())){
             this.constructJSONModList('forge', modObj.fMods, true)
             if(this.usingLiteLoader){
                 this.constructJSONModList('liteloader', modObj.lMods, true)
@@ -53,14 +54,14 @@ class ProcessBuilder {
         const uberModArr = modObj.fMods.concat(modObj.lMods)
         let args = this.constructJVMArguments(uberModArr, tempNativePath)
 
-        if(mcVersionAtLeast('1.13', this.server.rawServer.minecraftVersion)){
+        if(mcVersionAtLeast('1.13', this.server.getMinecraftVersion())){
             //args = args.concat(this.constructModArguments(modObj.fMods))
             args = args.concat(this.constructModList(modObj.fMods))
         }
 
         logger.info('Launch Arguments:', args)
 
-        const child = child_process.spawn(ConfigManager.getJavaExecutable(this.server.rawServer.id), args, {
+        const child = child_process.spawn(ConfigManager.getJavaExecutable(this.server.getID()), args, {
             cwd: this.gameDir,
             detached: ConfigManager.getLaunchDetached()
         })
@@ -136,15 +137,15 @@ class ProcessBuilder {
                 if(!ll.getRequired().value){
                     const modCfg = ConfigManager.getModConfiguration(this.server.rawServer.id).mods
                     if(ProcessBuilder.isModEnabled(modCfg[ll.getVersionlessMavenIdentifier()], ll.getRequired())){
-                        if(fs.existsSync(ll.getPath())){
+                        if(fs.existsSync(ll.localPath)){
                             this.usingLiteLoader = true
-                            this.llPath = ll.getPath()
+                            this.llPath = ll.localPath
                         }
                     }
                 } else {
-                    if(fs.existsSync(ll.getPath())){
+                    if(fs.existsSync(ll.localPath)){
                         this.usingLiteLoader = true
-                        this.llPath = ll.getPath()
+                        this.llPath = ll.localPath
                     }
                 }
             }
@@ -306,11 +307,14 @@ class ProcessBuilder {
     }
 
     _processAutoConnectArg(args){
-        if(ConfigManager.getAutoConnect() && this.server.rawServer.autoconnect){
+        if(ConfigManager.getAutoConnect() && this.server.isAutoConnect()){
+            const serverURL = new URL('my://' + this.server.getAddress())
             args.push('--server')
-            args.push(this.server.hostname)
-            args.push('--port')
-            args.push(this.server.port)
+            args.push(serverURL.hostname)
+            if(serverURL.port){
+                args.push('--port')
+                args.push(serverURL.port)
+            }
         }
     }
 
@@ -322,7 +326,7 @@ class ProcessBuilder {
      * @returns {Array.<string>} An array containing the full JVM arguments for this process.
      */
     constructJVMArguments(mods, tempNativePath){
-        if(mcVersionAtLeast('1.13', this.server.rawServer.minecraftVersion)){
+        if(mcVersionAtLeast('1.13', this.server.getMinecraftVersion())){
             return this._constructJVMArguments113(mods, tempNativePath)
         } else {
             return this._constructJVMArguments112(mods, tempNativePath)
@@ -350,9 +354,9 @@ class ProcessBuilder {
             args.push('-Xdock:name=HeliosLauncher')
             args.push('-Xdock:icon=' + path.join(__dirname, '..', 'images', 'minecraft.icns'))
         }
-        args.push('-Xmx' + ConfigManager.getMaxRAM(this.server.rawServer.id))
-        args.push('-Xms' + ConfigManager.getMinRAM(this.server.rawServer.id))
-        args = args.concat(ConfigManager.getJVMOptions(this.server.rawServer.id))
+        args.push('-Xmx' + ConfigManager.getMaxRAM(this.server.getID()))
+        args.push('-Xms' + ConfigManager.getMinRAM(this.server.getID()))
+        args = args.concat(ConfigManager.getJVMOptions(this.server.getID()))
         args.push('-Djava.library.path=' + tempNativePath)
 
         // Main Java Class
@@ -401,9 +405,9 @@ class ProcessBuilder {
             args.push('-Xdock:name=HeliosLauncher')
             args.push('-Xdock:icon=' + path.join(__dirname, '..', 'images', 'minecraft.icns'))
         }
-        args.push('-Xmx' + ConfigManager.getMaxRAM(this.server.rawServer.id))
-        args.push('-Xms' + ConfigManager.getMinRAM(this.server.rawServer.id))
-        args = args.concat(ConfigManager.getJVMOptions(this.server.rawServer.id))
+        args.push('-Xmx' + ConfigManager.getMaxRAM(this.server.getID()))
+        args.push('-Xms' + ConfigManager.getMinRAM(this.server.getID()))
+        args = args.concat(ConfigManager.getJVMOptions(this.server.getID()))
 
         // Main Java Class
         args.push(this.forgeData.mainClass)
@@ -467,7 +471,7 @@ class ProcessBuilder {
                             break
                         case 'version_name':
                             //val = versionData.id
-                            val = this.server.rawServer.id
+                            val = this.server.getID()
                             break
                         case 'game_directory':
                             val = this.gameDir
@@ -565,7 +569,7 @@ class ProcessBuilder {
                         break
                     case 'version_name':
                         //val = versionData.id
-                        val = this.server.rawServer.id
+                        val = this.server.getID()
                         break
                     case 'game_directory':
                         val = this.gameDir
@@ -664,7 +668,7 @@ class ProcessBuilder {
     classpathArg(mods, tempNativePath){
         let cpArgs = []
 
-        if(!mcVersionAtLeast('1.17', this.server.rawServer.minecraftVersion)) {
+        if(!mcVersionAtLeast('1.17', this.server.getMinecraftVersion())) {
             // Add the version.jar to the classpath.
             // Must not be added to the classpath for Forge 1.17+.
             const version = this.versionData.id
@@ -822,15 +826,15 @@ class ProcessBuilder {
      * @returns {{[id: string]: string}} An object containing the paths of each library this server requires.
      */
     _resolveServerLibraries(mods){
-        const mdls = this.server.modules
+        const mdls = this.server.getModules()
         let libs = {}
 
         // Locate Forge/Libraries
         for(let mdl of mdls){
-            const type = mdl.rawModule.type
+            const type = mdl.getType()
             if(type === Type.ForgeHosted || type === Type.Library){
-                libs[mdl.getVersionlessMavenIdentifier()] = mdl.getPath()
-                if(mdl.subModules.length > 0){
+                libs[mdl.getVersionlessID()] = mdl.getArtifact().getPath()
+                if(mdl.hasSubModules()){
                     const res = this._resolveModuleLibraries(mdl)
                     if(res.length > 0){
                         libs = {...libs, ...res}
@@ -859,20 +863,20 @@ class ProcessBuilder {
      * @returns {Array.<string>} An array containing the paths of each library this module requires.
      */
     _resolveModuleLibraries(mdl){
-        if(!mdl.subModules.length > 0){
+        if(!mdl.hasSubModules()){
             return []
         }
         let libs = []
-        for(let sm of mdl.subModules){
-            if(sm.rawModule.type === Type.Library){
+        for(let sm of mdl.getSubModules()){
+            if(sm.getType() === Type.Library){
 
-                if(sm.rawModule.classpath ?? true) {
-                    libs.push(sm.getPath())
+                if(sm.getClasspath()) {
+                    libs.push(sm.getArtifact().getPath())
                 }
             }
             // If this module has submodules, we need to resolve the libraries for those.
             // To avoid unnecessary recursive calls, base case is checked here.
-            if(mdl.subModules.length > 0){
+            if(mdl.hasSubModules()){
                 const res = this._resolveModuleLibraries(sm)
                 if(res.length > 0){
                     libs = libs.concat(res)

app/assets/js/scripts/landing.js

@@ -5,24 +5,13 @@
 const cp                      = require('child_process')
 const crypto                  = require('crypto')
 const { URL }                 = require('url')
-const {
-    MojangRestAPI,
-    getServerStatus
-}                             = require('helios-core/mojang')
-const {
-    RestResponseStatus,
-    isDisplayableError,
-    mcVersionAtLeast
-}                             = require('helios-core/common')
-const {
-    FullRepair,
-    DistributionIndexProcessor,
-    MojangIndexProcessor
-}                             = require('helios-core/dl')
+const { MojangRestAPI, getServerStatus }     = require('helios-core/mojang')
 
 // Internal Requirements
 const DiscordWrapper          = require('./assets/js/discordwrapper')
 const ProcessBuilder          = require('./assets/js/processbuilder')
+const { RestResponseStatus, isDisplayableError, mcVersionAtLeast } = require('helios-core/common')
+const { stdout } = require('process')
 
 // Launch Elements
 const launch_content          = document.getElementById('launch_content')
@@ -64,22 +53,26 @@ function setLaunchDetails(details){
 /**
  * Set the value of the loading progress bar and display that value.
  * 
- * @param {number} percent Percentage (0-100)
+ * @param {number} value The progress value.
+ * @param {number} max The total size.
+ * @param {number|string} percent Optional. The percentage to display on the progress label.
  */
-function setLaunchPercentage(percent){
-    launch_progress.setAttribute('max', 100)
-    launch_progress.setAttribute('value', percent)
+function setLaunchPercentage(value, max, percent = ((value/max)*100)){
+    launch_progress.setAttribute('max', max)
+    launch_progress.setAttribute('value', value)
     launch_progress_label.innerHTML = percent + '%'
 }
 
 /**
  * Set the value of the OS progress bar and display that on the UI.
  * 
- * @param {number} percent Percentage (0-100)
+ * @param {number} value The progress value.
+ * @param {number} max The total download size.
+ * @param {number|string} percent Optional. The percentage to display on the progress label.
  */
-function setDownloadPercentage(percent){
-    remote.getCurrentWindow().setProgressBar(percent/100)
-    setLaunchPercentage(percent)
+function setDownloadPercentage(value, max, percent = ((value/max)*100)){
+    remote.getCurrentWindow().setProgressBar(value/max)
+    setLaunchPercentage(value, max, percent)
 }
 
 /**
@@ -105,10 +98,10 @@ document.getElementById('launch_button').addEventListener('click', async (e) =>
         setLaunchPercentage(0, 100)
 
         const jg = new JavaGuard(mcVersion)
-        jg._validateJavaBinary(jExe).then(async v => {
+        jg._validateJavaBinary(jExe).then((v) => {
             loggerLanding.info('Java version meta', v)
             if(v.valid){
-                await dlAsync()
+                dlAsync()
             } else {
                 asyncSystemScan(mcVersion)
             }
@@ -376,7 +369,7 @@ function asyncSystemScan(mcVersion, launchAfter = true){
                 await populateJavaExecDetails(settingsJavaExecVal.value)
 
                 if(launchAfter){
-                    await dlAsync()
+                    dlAsync()
                 }
                 sysAEx.disconnect()
             }
@@ -452,7 +445,7 @@ function asyncSystemScan(mcVersion, launchAfter = true){
                     setLaunchDetails('Java Installed!')
 
                     if(launchAfter){
-                        await dlAsync()
+                        dlAsync()
                     }
 
                     sysAEx.disconnect()
@@ -480,28 +473,18 @@ const GAME_JOINED_REGEX = /\[.+\]: Sound engine started/
 const GAME_LAUNCH_REGEX = /^\[.+\]: (?:MinecraftForge .+ Initialized|ModLauncher .+ starting: .+)$/
 const MIN_LINGER = 5000
 
-async function dlAsync(login = true) {
+let aEx
+let serv
+let versionData
+let forgeData
+
+let progressListener
+
+function dlAsync(login = true){
 
     // Login parameter is temporary for debug purposes. Allows testing the validation/downloads without
     // launching the game.
 
-    const loggerLaunchSuite = LoggerUtil.getLogger('LaunchSuite')
-
-    setLaunchDetails('Loading server information..')
-
-    let distro
-
-    try {
-        distro = await DistroAPI.refreshDistributionOrFallback()
-        onDistroRefresh(distro)
-    } catch(err) {
-        loggerLaunchSuite.error('Unable to refresh distribution index.', err)
-        showLaunchFailure('Fatal Error', 'Could not load a copy of the distribution index. See the console (CTRL + Shift + i) for more details.')
-        return
-    }
-
-    const serv = distro.getServerById(ConfigManager.getSelectedServer())
-
     if(login) {
         if(ConfigManager.getSelectedAccount() == null){
             loggerLanding.error('You must be logged into an account.')
@@ -513,148 +496,262 @@ async function dlAsync(login = true) {
     toggleLaunchArea(true)
     setLaunchPercentage(0, 100)
 
-    const fullRepairModule = new FullRepair(
+    const loggerLaunchSuite = LoggerUtil.getLogger('LaunchSuite')
+
+    const forkEnv = JSON.parse(JSON.stringify(process.env))
+    forkEnv.CONFIG_DIRECT_PATH = ConfigManager.getLauncherDirectory()
+
+    // Start AssetExec to run validations and downloads in a forked process.
+    aEx = cp.fork(path.join(__dirname, 'assets', 'js', 'assetexec.js'), [
+        'AssetGuard',
         ConfigManager.getCommonDirectory(),
-        ConfigManager.getInstanceDirectory(),
-        ConfigManager.getLauncherDirectory(),
-        ConfigManager.getSelectedServer(),
-        DistroAPI.isDevMode()
-    )
-
-    fullRepairModule.spawnReceiver()
-
-    fullRepairModule.childProcess.on('error', (err) => {
+        ConfigManager.getJavaExecutable(ConfigManager.getSelectedServer())
+    ], {
+        env: forkEnv,
+        stdio: 'pipe'
+    })
+    // Stdout
+    aEx.stdio[1].setEncoding('utf8')
+    aEx.stdio[1].on('data', (data) => {
+        console.log(`\x1b[32m[AEx]\x1b[0m ${data}`)
+    })
+    // Stderr
+    aEx.stdio[2].setEncoding('utf8')
+    aEx.stdio[2].on('data', (data) => {
+        console.log(`\x1b[31m[AEx]\x1b[0m ${data}`)
+    })
+    aEx.on('error', (err) => {
         loggerLaunchSuite.error('Error during launch', err)
         showLaunchFailure('Error During Launch', err.message || 'See console (CTRL + Shift + i) for more details.')
     })
-    fullRepairModule.childProcess.on('close', (code, _signal) => {
+    aEx.on('close', (code, signal) => {
         if(code !== 0){
             loggerLaunchSuite.error(`AssetExec exited with code ${code}, assuming error.`)
             showLaunchFailure('Error During Launch', 'See console (CTRL + Shift + i) for more details.')
         }
     })
 
-    loggerLaunchSuite.info('Validating files.')
-    setLaunchDetails('Validating file integrity..')
-    const invalidFileCount = await fullRepairModule.verifyFiles(percent => {
-        setLaunchPercentage(percent)
-    })
-    setLaunchPercentage(100)
+    // Establish communications between the AssetExec and current process.
+    aEx.on('message', async (m) => {
 
-    if(invalidFileCount > 0) {
-        loggerLaunchSuite.info('Downloading files.')
-        setLaunchDetails('Downloading files..')
-        await fullRepairModule.download(percent => {
-            setDownloadPercentage(percent)
-        })
-        setDownloadPercentage(100)
-    } else {
-        loggerLaunchSuite.info('No invalid files, skipping download.')
-    }
-
-    // Remove download bar.
-    remote.getCurrentWindow().setProgressBar(-1)
-
-    fullRepairModule.destroyReceiver()
-
-    setLaunchDetails('Preparing to launch..')
-
-    const mojangIndexProcessor = new MojangIndexProcessor(
-        ConfigManager.getCommonDirectory(),
-        serv.rawServer.minecraftVersion)
-    const distributionIndexProcessor = new DistributionIndexProcessor(
-        ConfigManager.getCommonDirectory(),
-        distro,
-        serv.rawServer.id
-    )
-
-    // TODO need to load these.
-    const forgeData = await distributionIndexProcessor.loadForgeVersionJson(serv)
-    const versionData = await mojangIndexProcessor.getVersionJson()
-
-    if(login) {
-        const authUser = ConfigManager.getSelectedAccount()
-        loggerLaunchSuite.info(`Sending selected account (${authUser.displayName}) to ProcessBuilder.`)
-        let pb = new ProcessBuilder(serv, versionData, forgeData, authUser, remote.app.getVersion())
-        setLaunchDetails('Launching game..')
-
-        // const SERVER_JOINED_REGEX = /\[.+\]: \[CHAT\] [a-zA-Z0-9_]{1,16} joined the game/
-        const SERVER_JOINED_REGEX = new RegExp(`\\[.+\\]: \\[CHAT\\] ${authUser.displayName} joined the game`)
-
-        const onLoadComplete = () => {
-            toggleLaunchArea(false)
-            if(hasRPC){
-                DiscordWrapper.updateDetails('Loading game..')
+        if(m.context === 'validate'){
+            switch(m.data){
+                case 'distribution':
+                    setLaunchPercentage(20, 100)
+                    loggerLaunchSuite.info('Validated distibution index.')
+                    setLaunchDetails('Loading version information..')
+                    break
+                case 'version':
+                    setLaunchPercentage(40, 100)
+                    loggerLaunchSuite.info('Version data loaded.')
+                    setLaunchDetails('Validating asset integrity..')
+                    break
+                case 'assets':
+                    setLaunchPercentage(60, 100)
+                    loggerLaunchSuite.info('Asset Validation Complete')
+                    setLaunchDetails('Validating library integrity..')
+                    break
+                case 'libraries':
+                    setLaunchPercentage(80, 100)
+                    loggerLaunchSuite.info('Library validation complete.')
+                    setLaunchDetails('Validating miscellaneous file integrity..')
+                    break
+                case 'files':
+                    setLaunchPercentage(100, 100)
+                    loggerLaunchSuite.info('File validation complete.')
+                    setLaunchDetails('Downloading files..')
+                    break
             }
-            proc.stdout.on('data', gameStateChange)
-            proc.stdout.removeListener('data', tempListener)
-            proc.stderr.removeListener('data', gameErrorListener)
-        }
-        const start = Date.now()
+        } else if(m.context === 'progress'){
+            switch(m.data){
+                case 'assets': {
+                    const perc = (m.value/m.total)*20
+                    setLaunchPercentage(40+perc, 100, parseInt(40+perc))
+                    break
+                }
+                case 'download':
+                    setDownloadPercentage(m.value, m.total, m.percent)
+                    break
+                case 'extract': {
+                    // Show installing progress bar.
+                    remote.getCurrentWindow().setProgressBar(2)
 
-        // Attach a temporary listener to the client output.
-        // Will wait for a certain bit of text meaning that
-        // the client application has started, and we can hide
-        // the progress bar stuff.
-        const tempListener = function(data){
-            if(GAME_LAUNCH_REGEX.test(data.trim())){
-                const diff = Date.now()-start
-                if(diff < MIN_LINGER) {
-                    setTimeout(onLoadComplete, MIN_LINGER-diff)
-                } else {
-                    onLoadComplete()
+                    // Download done, extracting.
+                    const eLStr = 'Extracting libraries'
+                    let dotStr = ''
+                    setLaunchDetails(eLStr)
+                    progressListener = setInterval(() => {
+                        if(dotStr.length >= 3){
+                            dotStr = ''
+                        } else {
+                            dotStr += '.'
+                        }
+                        setLaunchDetails(eLStr + dotStr)
+                    }, 750)
+                    break
                 }
             }
-        }
+        } else if(m.context === 'complete'){
+            switch(m.data){
+                case 'download':
+                    // Download and extraction complete, remove the loading from the OS progress bar.
+                    remote.getCurrentWindow().setProgressBar(-1)
+                    if(progressListener != null){
+                        clearInterval(progressListener)
+                        progressListener = null
+                    }
 
-        // Listener for Discord RPC.
-        const gameStateChange = function(data){
-            data = data.trim()
-            if(SERVER_JOINED_REGEX.test(data)){
-                DiscordWrapper.updateDetails('Exploring the Realm!')
-            } else if(GAME_JOINED_REGEX.test(data)){
-                DiscordWrapper.updateDetails('Sailing to Westeros!')
+                    setLaunchDetails('Preparing to launch..')
+                    break
             }
-        }
+        } else if(m.context === 'error'){
+            switch(m.data){
+                case 'download':
+                    loggerLaunchSuite.error('Error while downloading:', m.error)
+                    
+                    if(m.error.code === 'ENOENT'){
+                        showLaunchFailure(
+                            'Download Error',
+                            'Could not connect to the file server. Ensure that you are connected to the internet and try again.'
+                        )
+                    } else {
+                        showLaunchFailure(
+                            'Download Error',
+                            'Check the console (CTRL + Shift + i) for more details. Please try again.'
+                        )
+                    }
 
-        const gameErrorListener = function(data){
-            data = data.trim()
-            if(data.indexOf('Could not find or load main class net.minecraft.launchwrapper.Launch') > -1){
-                loggerLaunchSuite.error('Game launch failed, LaunchWrapper was not downloaded properly.')
-                showLaunchFailure('Error During Launch', 'The main file, LaunchWrapper, failed to download properly. As a result, the game cannot launch.<br><br>To fix this issue, temporarily turn off your antivirus software and launch the game again.<br><br>If you have time, please <a href="https://github.com/dscalzi/HeliosLauncher/issues">submit an issue</a> and let us know what antivirus software you use. We\'ll contact them and try to straighten things out.')
+                    remote.getCurrentWindow().setProgressBar(-1)
+
+                    // Disconnect from AssetExec
+                    aEx.disconnect()
+                    break
             }
-        }
+        } else if(m.context === 'validateEverything'){
 
-        try {
-            // Build Minecraft process.
-            proc = pb.build()
+            let allGood = true
 
-            // Bind listeners to stdout.
-            proc.stdout.on('data', tempListener)
-            proc.stderr.on('data', gameErrorListener)
+            // If these properties are not defined it's likely an error.
+            if(m.result.forgeData == null || m.result.versionData == null){
+                loggerLaunchSuite.error('Error during validation:', m.result)
 
-            setLaunchDetails('Done. Enjoy the server!')
+                loggerLaunchSuite.error('Error during launch', m.result.error)
+                showLaunchFailure('Error During Launch', 'Please check the console (CTRL + Shift + i) for more details.')
 
-            // Init Discord Hook
-            if(distro.rawDistribution.discord != null && serv.rawServerdiscord != null){
-                DiscordWrapper.initRPC(distro.rawDistribution.discord, serv.rawServer.discord)
-                hasRPC = true
-                proc.on('close', (code, signal) => {
-                    loggerLaunchSuite.info('Shutting down Discord Rich Presence..')
-                    DiscordWrapper.shutdownRPC()
-                    hasRPC = false
-                    proc = null
-                })
+                allGood = false
             }
 
-        } catch(err) {
+            forgeData = m.result.forgeData
+            versionData = m.result.versionData
 
-            loggerLaunchSuite.error('Error during launch', err)
-            showLaunchFailure('Error During Launch', 'Please check the console (CTRL + Shift + i) for more details.')
+            if(login && allGood) {
+                const authUser = ConfigManager.getSelectedAccount()
+                loggerLaunchSuite.info(`Sending selected account (${authUser.displayName}) to ProcessBuilder.`)
+                let pb = new ProcessBuilder(serv, versionData, forgeData, authUser, remote.app.getVersion())
+                setLaunchDetails('Launching game..')
+
+                // const SERVER_JOINED_REGEX = /\[.+\]: \[CHAT\] [a-zA-Z0-9_]{1,16} joined the game/
+                const SERVER_JOINED_REGEX = new RegExp(`\\[.+\\]: \\[CHAT\\] ${authUser.displayName} joined the game`)
+
+                const onLoadComplete = () => {
+                    toggleLaunchArea(false)
+                    if(hasRPC){
+                        DiscordWrapper.updateDetails('Loading game..')
+                    }
+                    proc.stdout.on('data', gameStateChange)
+                    proc.stdout.removeListener('data', tempListener)
+                    proc.stderr.removeListener('data', gameErrorListener)
+                }
+                const start = Date.now()
+
+                // Attach a temporary listener to the client output.
+                // Will wait for a certain bit of text meaning that
+                // the client application has started, and we can hide
+                // the progress bar stuff.
+                const tempListener = function(data){
+                    if(GAME_LAUNCH_REGEX.test(data.trim())){
+                        const diff = Date.now()-start
+                        if(diff < MIN_LINGER) {
+                            setTimeout(onLoadComplete, MIN_LINGER-diff)
+                        } else {
+                            onLoadComplete()
+                        }
+                    }
+                }
+
+                // Listener for Discord RPC.
+                const gameStateChange = function(data){
+                    data = data.trim()
+                    if(SERVER_JOINED_REGEX.test(data)){
+                        DiscordWrapper.updateDetails('Exploring the Realm!')
+                    } else if(GAME_JOINED_REGEX.test(data)){
+                        DiscordWrapper.updateDetails('Sailing to Westeros!')
+                    }
+                }
+
+                const gameErrorListener = function(data){
+                    data = data.trim()
+                    if(data.indexOf('Could not find or load main class net.minecraft.launchwrapper.Launch') > -1){
+                        loggerLaunchSuite.error('Game launch failed, LaunchWrapper was not downloaded properly.')
+                        showLaunchFailure('Error During Launch', 'The main file, LaunchWrapper, failed to download properly. As a result, the game cannot launch.<br><br>To fix this issue, temporarily turn off your antivirus software and launch the game again.<br><br>If you have time, please <a href="https://github.com/dscalzi/HeliosLauncher/issues">submit an issue</a> and let us know what antivirus software you use. We\'ll contact them and try to straighten things out.')
+                    }
+                }
+
+                try {
+                    // Build Minecraft process.
+                    proc = pb.build()
+
+                    // Bind listeners to stdout.
+                    proc.stdout.on('data', tempListener)
+                    proc.stderr.on('data', gameErrorListener)
+
+                    setLaunchDetails('Done. Enjoy the server!')
+
+                    // Init Discord Hook
+                    const distro = await DistroAPI.getDistribution()
+                    if(distro.rawDistribution.discord != null && serv.rawServerdiscord != null){
+                        DiscordWrapper.initRPC(distro.rawDistribution.discord, serv.rawServer.discord)
+                        hasRPC = true
+                        proc.on('close', (code, signal) => {
+                            loggerLaunchSuite.info('Shutting down Discord Rich Presence..')
+                            DiscordWrapper.shutdownRPC()
+                            hasRPC = false
+                            proc = null
+                        })
+                    }
+
+                } catch(err) {
+
+                    loggerLaunchSuite.error('Error during launch', err)
+                    showLaunchFailure('Error During Launch', 'Please check the console (CTRL + Shift + i) for more details.')
+
+                }
+            }
+
+            // Disconnect from AssetExec
+            aEx.disconnect()
 
         }
-    }
+    })
 
+    // Begin Validations
+
+    // Validate Forge files.
+    setLaunchDetails('Loading server information..')
+
+    DistroAPI.refreshDistributionOrFallback()
+        .then(data => {
+            onDistroRefresh(data)
+            serv = data.getServerById(ConfigManager.getSelectedServer())
+            aEx.send({task: 'execute', function: 'validateEverything', argsArr: [ConfigManager.getSelectedServer(), DistroAPI.isDevMode()]})
+        })
+        .catch(err => {
+            loggerLaunchSuite.error('Unable to refresh distribution index.', err)
+            showLaunchFailure('Fatal Error', 'Could not load a copy of the distribution index. See the console (CTRL + Shift + i) for more details.')
+
+            // Disconnect from AssetExec
+            aEx.disconnect()
+        })
 }
 
 /**