Java settings by instance

2024-12-22 03:32:12 -08:00 · 2022-11-26 16:57:30 -05:00 · 2022-11-26 16:57:30 -05:00 · 4636f7200c
commit 4636f7200c
parent 72cb45b271
9 changed files with 241 additions and 79 deletions
--- a/app/assets/js/assetguard.js
+++ b/app/assets/js/assetguard.js
@ -5,6 +5,7 @@ const child_process = require('child_process')
 const crypto        = require('crypto')
 const EventEmitter  = require('events')
 const fs            = require('fs-extra')
+const nodeDiskInfo  = require('node-disk-info')
 const StreamZip     = require('node-stream-zip')
 const path          = require('path')
 const Registry      = require('winreg')
@ -342,6 +343,9 @@ class JavaGuard extends EventEmitter {
     * @returns {boolean} True if the path points to a Java executable, otherwise false.
     */
    static isJavaExecPath(pth){
+        if(pth == null) {
+            return false
+        }
        if(process.platform === 'win32'){
            return pth.endsWith(path.join('bin', 'javaw.exe'))
        } else if(process.platform === 'darwin'){
@ -459,8 +463,13 @@ class JavaGuard extends EventEmitter {
                let verString = props[i].split('=')[1].trim()
                console.log(props[i].trim())
                const verOb = JavaGuard.parseJavaRuntimeVersion(verString)
+                // TODO implement a support matrix eventually. Right now this is good enough
+                // 1.7-1.16 = Java 8
+                // 1.17+ = Java 17
+                // Actual support may vary, but we're going with this rule for simplicity.
                if(verOb.major < 9){
                    // Java 8
+                    if(!Util.mcVersionAtLeast('1.17', this.mcVersion)){
                        if(verOb.major === 8 && verOb.update > 52){
                            meta.version = verOb
                            ++checksum
@ -468,6 +477,7 @@ class JavaGuard extends EventEmitter {
                                break
                            }
                        }
+                    }
                } else if(verOb.major >= 16) {
                    // TODO Make this logic better. Make java 16 required.
                    // Java 9+
@ -804,15 +814,22 @@ class JavaGuard extends EventEmitter {
        // Get possible paths from the registry.
        let pathSet1 = await JavaGuard._scanRegistry()
        if(pathSet1.size === 0){
+
            // Do a manual file system scan of program files.
+            // Check all drives
+            const driveMounts = nodeDiskInfo.getDiskInfoSync().map(({ mounted }) => mounted)
+            for(const mount of driveMounts) {
                pathSet1 = new Set([
                    ...pathSet1,
-                ...(await JavaGuard._scanFileSystem('C:\\Program Files\\Java')),
-                ...(await JavaGuard._scanFileSystem('C:\\Program Files\\Eclipse Foundation')),
-                ...(await JavaGuard._scanFileSystem('C:\\Program Files\\AdoptOpenJDK'))
+                    ...(await JavaGuard._scanFileSystem(`${mount}\\Program Files\\Java`)),
+                    ...(await JavaGuard._scanFileSystem(`${mount}\\Program Files\\Eclipse Adoptium`)),
+                    ...(await JavaGuard._scanFileSystem(`${mount}\\Program Files\\Eclipse Foundation`)),
+                    ...(await JavaGuard._scanFileSystem(`${mount}\\Program Files\\AdoptOpenJDK`))
                ])
            }
            
+        }
+
        // Get possible paths from the data directory.
        const pathSet2 = await JavaGuard._scanFileSystem(path.join(dataDir, 'runtime', 'x64'))

--- a/app/assets/js/configmanager.js
+++ b/app/assets/js/configmanager.js
@ -63,6 +63,27 @@ function resolveMinRAM(){
    return resolveMaxRAM()
 }

+/**
+ * TODO Copy pasted, should be in a utility file.
+ * 
+ * Returns true if the actual version is greater than
+ * or equal to the desired version.
+ * 
+ * @param {string} desired The desired version.
+ * @param {string} actual The actual version.
+ */
+function mcVersionAtLeast(desired, actual){
+    const des = desired.split('.')
+    const act = actual.split('.')
+
+    for(let i=0; i<des.length; i++){
+        if(!(parseInt(act[i]) >= parseInt(des[i]))){
+            return false
+        }
+    }
+    return true
+}
+
 /**
 * Three types of values:
 * Static = Explicitly declared.
@ -71,17 +92,6 @@ function resolveMinRAM(){
 */
 const DEFAULT_CONFIG = {
    settings: {
-        java: {
-            minRAM: resolveMinRAM(),
-            maxRAM: resolveMaxRAM(), // Dynamic
-            executable: null,
-            jvmOptions: [
-                '-XX:+UseConcMarkSweepGC',
-                '-XX:+CMSIncrementalMode',
-                '-XX:-UseAdaptiveSizePolicy',
-                '-Xmn128M'
-            ],
-        },
        game: {
            resWidth: 1280,
            resHeight: 720,
@ -103,7 +113,8 @@ const DEFAULT_CONFIG = {
    selectedServer: null, // Resolved
    selectedAccount: null,
    authenticationDatabase: {},
-    modConfigurations: []
+    modConfigurations: [],
+    javaConfig: {}
 }

 let config = null
@ -177,7 +188,7 @@ function validateKeySet(srcObj, destObj){
    if(srcObj == null){
        srcObj = {}
    }
-    const validationBlacklist = ['authenticationDatabase']
+    const validationBlacklist = ['authenticationDatabase', 'javaConfig']
    const keys = Object.keys(srcObj)
    for(let i=0; i<keys.length; i++){
        if(typeof destObj[keys[i]] === 'undefined'){
@ -511,16 +522,66 @@ exports.setModConfiguration = function(serverid, configuration){

 // Java Settings

+function defaultJavaConfig(mcVersion) {
+    if(mcVersionAtLeast('1.17', mcVersion)) {
+        return defaultJavaConfig117()
+    } else {
+        return defaultJavaConfigBelow117()
+    }
+}
+
+function defaultJavaConfigBelow117() {
+    return {
+        minRAM: resolveMinRAM(),
+        maxRAM: resolveMaxRAM(), // Dynamic
+        executable: null,
+        jvmOptions: [
+            '-XX:+UseConcMarkSweepGC',
+            '-XX:+CMSIncrementalMode',
+            '-XX:-UseAdaptiveSizePolicy',
+            '-Xmn128M'
+        ],
+    }
+}
+
+function defaultJavaConfig117() {
+    return {
+        minRAM: resolveMinRAM(),
+        maxRAM: resolveMaxRAM(), // Dynamic
+        executable: null,
+        jvmOptions: [
+            '-XX:+UnlockExperimentalVMOptions',
+            '-XX:+UseG1GC',
+            '-XX:G1NewSizePercent=20',
+            '-XX:G1ReservePercent=20',
+            '-XX:MaxGCPauseMillis=50',
+            '-XX:G1HeapRegionSize=32M'
+        ],
+    }
+}
+
+/**
+ * Ensure a java config property is set for the given server.
+ * 
+ * @param {string} serverid The server id.
+ * @param {*} mcVersion The minecraft version of the server.
+ */
+exports.ensureJavaConfig = function(serverid, mcVersion) {
+    if(!Object.prototype.hasOwnProperty.call(config.javaConfig, serverid)) {
+        config.javaConfig[serverid] = defaultJavaConfig(mcVersion)
+    }
+}
+
 /**
 * Retrieve the minimum amount of memory for JVM initialization. This value
 * contains the units of memory. For example, '5G' = 5 GigaBytes, '1024M' = 
 * 1024 MegaBytes, etc.
 * 
- * @param {boolean} def Optional. If true, the default value will be returned.
+ * @param {string} serverid The server id.
 * @returns {string} The minimum amount of memory for JVM initialization.
 */
-exports.getMinRAM = function(def = false){
-    return !def ? config.settings.java.minRAM : DEFAULT_CONFIG.settings.java.minRAM
+exports.getMinRAM = function(serverid){
+    return config.javaConfig[serverid].minRAM
 }

 /**
@ -528,10 +589,11 @@ exports.getMinRAM = function(def = false){
 * contain the units of memory. For example, '5G' = 5 GigaBytes, '1024M' = 
 * 1024 MegaBytes, etc.
 * 
+ * @param {string} serverid The server id.
 * @param {string} minRAM The new minimum amount of memory for JVM initialization.
 */
-exports.setMinRAM = function(minRAM){
-    config.settings.java.minRAM = minRAM
+exports.setMinRAM = function(serverid, minRAM){
+    config.javaConfig[serverid].minRAM = minRAM
 }

 /**
@ -539,11 +601,11 @@ exports.setMinRAM = function(minRAM){
 * contains the units of memory. For example, '5G' = 5 GigaBytes, '1024M' = 
 * 1024 MegaBytes, etc.
 * 
- * @param {boolean} def Optional. If true, the default value will be returned.
+ * @param {string} serverid The server id.
 * @returns {string} The maximum amount of memory for JVM initialization.
 */
-exports.getMaxRAM = function(def = false){
-    return !def ? config.settings.java.maxRAM : resolveMaxRAM()
+exports.getMaxRAM = function(serverid){
+    return config.javaConfig[serverid].maxRAM
 }

 /**
@ -551,10 +613,11 @@ exports.getMaxRAM = function(def = false){
 * contain the units of memory. For example, '5G' = 5 GigaBytes, '1024M' = 
 * 1024 MegaBytes, etc.
 * 
+ * @param {string} serverid The server id.
 * @param {string} maxRAM The new maximum amount of memory for JVM initialization.
 */
-exports.setMaxRAM = function(maxRAM){
-    config.settings.java.maxRAM = maxRAM
+exports.setMaxRAM = function(serverid, maxRAM){
+    config.javaConfig[serverid].maxRAM = maxRAM
 }

 /**
@ -562,19 +625,21 @@ exports.setMaxRAM = function(maxRAM){
 * 
 * This is a resolved configuration value and defaults to null until externally assigned.
 * 
+ * @param {string} serverid The server id.
 * @returns {string} The path of the Java Executable.
 */
-exports.getJavaExecutable = function(){
-    return config.settings.java.executable
+exports.getJavaExecutable = function(serverid){
+    return config.javaConfig[serverid].executable
 }

 /**
 * Set the path of the Java Executable.
 * 
+ * @param {string} serverid The server id.
 * @param {string} executable The new path of the Java Executable.
 */
-exports.setJavaExecutable = function(executable){
-    config.settings.java.executable = executable
+exports.setJavaExecutable = function(serverid, executable){
+    config.javaConfig[serverid].executable = executable
 }

 /**
@ -582,11 +647,11 @@ exports.setJavaExecutable = function(executable){
 * such as memory allocation, will be dynamically resolved and will not be included
 * in this value.
 * 
- * @param {boolean} def Optional. If true, the default value will be returned.
+ * @param {string} serverid The server id.
 * @returns {Array.<string>} An array of the additional arguments for JVM initialization.
 */
-exports.getJVMOptions = function(def = false){
-    return !def ? config.settings.java.jvmOptions : DEFAULT_CONFIG.settings.java.jvmOptions
+exports.getJVMOptions = function(serverid){
+    return config.javaConfig[serverid].jvmOptions
 }

 /**
@ -594,11 +659,12 @@ exports.getJVMOptions = function(def = false){
 * such as memory allocation, will be dynamically resolved and should not be
 * included in this value.
 * 
+ * @param {string} serverid The server id.
 * @param {Array.<string>} jvmOptions An array of the new additional arguments for JVM 
 * initialization.
 */
-exports.setJVMOptions = function(jvmOptions){
-    config.settings.java.jvmOptions = jvmOptions
+exports.setJVMOptions = function(serverid, jvmOptions){
+    config.javaConfig[serverid].jvmOptions = jvmOptions
 }

 // Game Settings
--- a/app/assets/js/processbuilder.js
+++ b/app/assets/js/processbuilder.js
@ -61,7 +61,7 @@ class ProcessBuilder {

        logger.log('Launch Arguments:', args)

-        const child = child_process.spawn(ConfigManager.getJavaExecutable(), args, {
+        const child = child_process.spawn(ConfigManager.getJavaExecutable(this.server.getID()), args, {
            cwd: this.gameDir,
            detached: ConfigManager.getLaunchDetached()
        })
@ -356,9 +356,9 @@ class ProcessBuilder {
            args.push('-Xdock:name=HeliosLauncher')
            args.push('-Xdock:icon=' + path.join(__dirname, '..', 'images', 'minecraft.icns'))
        }
-        args.push('-Xmx' + ConfigManager.getMaxRAM())
-        args.push('-Xms' + ConfigManager.getMinRAM())
-        args = args.concat(ConfigManager.getJVMOptions())
+        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
@ -407,9 +407,9 @@ class ProcessBuilder {
            args.push('-Xdock:name=HeliosLauncher')
            args.push('-Xdock:icon=' + path.join(__dirname, '..', 'images', 'minecraft.icns'))
        }
-        args.push('-Xmx' + ConfigManager.getMaxRAM())
-        args.push('-Xms' + ConfigManager.getMinRAM())
-        args = args.concat(ConfigManager.getJVMOptions())
+        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)
--- a/app/assets/js/scripts/landing.js
+++ b/app/assets/js/scripts/landing.js
@ -87,7 +87,7 @@ function setLaunchEnabled(val){
 document.getElementById('launch_button').addEventListener('click', function(e){
    loggerLanding.log('Launching game..')
    const mcVersion = DistroManager.getDistribution().getServer(ConfigManager.getSelectedServer()).getMinecraftVersion()
-    const jExe = ConfigManager.getJavaExecutable()
+    const jExe = ConfigManager.getJavaExecutable(ConfigManager.getSelectedServer())
    if(jExe == null){
        asyncSystemScan(mcVersion)
    } else {
@ -140,7 +140,7 @@ updateSelectedAccount(ConfigManager.getSelectedAccount())
 // Bind selected server
 function updateSelectedServer(serv){
    if(getCurrentView() === VIEWS.settings){
-        saveAllModConfigurations()
+        fullSettingsSave()
    }
    ConfigManager.setSelectedServer(serv != null ? serv.getID() : null)
    ConfigManager.save()
@ -332,7 +332,7 @@ function asyncSystemScan(mcVersion, launchAfter = true){
                )
                setOverlayHandler(() => {
                    setLaunchDetails('Preparing Java Download..')
-                    sysAEx.send({task: 'changeContext', class: 'AssetGuard', args: [ConfigManager.getCommonDirectory(),ConfigManager.getJavaExecutable()]})
+                    sysAEx.send({task: 'changeContext', class: 'AssetGuard', args: [ConfigManager.getCommonDirectory(),ConfigManager.getJavaExecutable(ConfigManager.getSelectedServer())]})
                    sysAEx.send({task: 'execute', function: '_enqueueOpenJDK', argsArr: [ConfigManager.getDataDirectory()]})
                    toggleOverlay(false)
                })
@ -360,7 +360,7 @@ function asyncSystemScan(mcVersion, launchAfter = true){

            } else {
                // Java installation found, use this to launch the game.
-                ConfigManager.setJavaExecutable(m.result)
+                ConfigManager.setJavaExecutable(ConfigManager.getSelectedServer(), m.result)
                ConfigManager.save()

                // We need to make sure that the updated value is on the settings UI.
@ -434,7 +434,7 @@ function asyncSystemScan(mcVersion, launchAfter = true){
                    remote.getCurrentWindow().setProgressBar(-1)

                    // Extraction completed successfully.
-                    ConfigManager.setJavaExecutable(m.args[0])
+                    ConfigManager.setJavaExecutable(ConfigManager.getSelectedServer(), m.args[0])
                    ConfigManager.save()

                    if(extractListener != null){
@ -506,7 +506,7 @@ function dlAsync(login = true){
    aEx = cp.fork(path.join(__dirname, 'assets', 'js', 'assetexec.js'), [
        'AssetGuard',
        ConfigManager.getCommonDirectory(),
-        ConfigManager.getJavaExecutable()
+        ConfigManager.getJavaExecutable(ConfigManager.getSelectedServer())
    ], {
        env: forkEnv,
        stdio: 'pipe'
--- a/app/assets/js/scripts/settings.js
+++ b/app/assets/js/scripts/settings.js
@ -2,7 +2,7 @@
 const os     = require('os')
 const semver = require('semver')

-const { JavaGuard } = require('./assets/js/assetguard')
+const { JavaGuard, Util } = require('./assets/js/assetguard')
 const DropinModUtil  = require('./assets/js/dropinmodutil')
 const { MSFT_OPCODE, MSFT_REPLY_TYPE, MSFT_ERROR } = require('./assets/js/ipcconstants')

@ -127,29 +127,34 @@ function initSettingsValues(){
    const sEls = document.getElementById('settingsContainer').querySelectorAll('[cValue]')
    Array.from(sEls).map((v, index, arr) => {
        const cVal = v.getAttribute('cValue')
+        const serverDependent = v.hasAttribute('serverDependent') // Means the first argument is the server id.
        const gFn = ConfigManager['get' + cVal]
+        const gFnOpts = []
+        if(serverDependent) {
+            gFnOpts.push(ConfigManager.getSelectedServer())
+        }
        if(typeof gFn === 'function'){
            if(v.tagName === 'INPUT'){
                if(v.type === 'number' || v.type === 'text'){
                    // Special Conditions
                    if(cVal === 'JavaExecutable'){
                        populateJavaExecDetails(v.value)
-                        v.value = gFn()
+                        v.value = gFn.apply(null, gFnOpts)
                    } else if (cVal === 'DataDirectory'){
-                        v.value = gFn()
+                        v.value = gFn.apply(null, gFnOpts)
                    } else if(cVal === 'JVMOptions'){
-                        v.value = gFn().join(' ')
+                        v.value = gFn.apply(null, gFnOpts).join(' ')
                    } else {
-                        v.value = gFn()
+                        v.value = gFn.apply(null, gFnOpts)
                    }
                } else if(v.type === 'checkbox'){
-                    v.checked = gFn()
+                    v.checked = gFn.apply(null, gFnOpts)
                }
            } else if(v.tagName === 'DIV'){
                if(v.classList.contains('rangeSlider')){
                    // Special Conditions
                    if(cVal === 'MinRAM' || cVal === 'MaxRAM'){
-                        let val = gFn()
+                        let val = gFn.apply(null, gFnOpts)
                        if(val.endsWith('M')){
                            val = Number(val.substring(0, val.length-1))/1000
                        } else {
@ -158,7 +163,7 @@ function initSettingsValues(){

                        v.setAttribute('value', val)
                    } else {
-                        v.setAttribute('value', Number.parseFloat(gFn()))
+                        v.setAttribute('value', Number.parseFloat(gFn.apply(null, gFnOpts)))
                    }
                }
            }
@ -174,22 +179,31 @@ function saveSettingsValues(){
    const sEls = document.getElementById('settingsContainer').querySelectorAll('[cValue]')
    Array.from(sEls).map((v, index, arr) => {
        const cVal = v.getAttribute('cValue')
+        const serverDependent = v.hasAttribute('serverDependent') // Means the first argument is the server id.
        const sFn = ConfigManager['set' + cVal]
+        const sFnOpts = []
+        if(serverDependent) {
+            sFnOpts.push(ConfigManager.getSelectedServer())
+        }
        if(typeof sFn === 'function'){
            if(v.tagName === 'INPUT'){
                if(v.type === 'number' || v.type === 'text'){
                    // Special Conditions
                    if(cVal === 'JVMOptions'){
                        if(!v.value.trim()) {
-                            sFn([])
+                            sFnOpts.push([])
+                            sFn.apply(null, sFnOpts)
                        } else {
-                            sFn(v.value.trim().split(/\s+/))
+                            sFnOpts.push(v.value.trim().split(/\s+/))
+                            sFn.apply(null, sFnOpts)
                        }
                    } else {
-                        sFn(v.value)
+                        sFnOpts.push(v.value)
+                        sFn.apply(null, sFnOpts)
                    }
                } else if(v.type === 'checkbox'){
-                    sFn(v.checked)
+                    sFnOpts.push(v.checked)
+                    sFn.apply(null, sFnOpts)
                    // Special Conditions
                    if(cVal === 'AllowPrerelease'){
                        changeAllowPrerelease(v.checked)
@ -206,9 +220,11 @@ function saveSettingsValues(){
                            val = val + 'G'
                        }

-                        sFn(val)
+                        sFnOpts.push(val)
+                        sFn.apply(null, sFnOpts)
                    } else {
-                        sFn(v.getAttribute('value'))
+                        sFnOpts.push(v.getAttribute('value'))
+                        sFn.apply(null, sFnOpts)
                    }
                }
            }
@ -305,13 +321,17 @@ function settingsSaveDisabled(v){
    settingsNavDone.disabled = v
 }

-/* Closes the settings view and saves all data. */
-settingsNavDone.onclick = () => {
+function fullSettingsSave() {
    saveSettingsValues()
    saveModConfiguration()
    ConfigManager.save()
    saveDropinModConfiguration()
    saveShaderpackSettings()
+}
+
+/* Closes the settings view and saves all data. */
+settingsNavDone.onclick = () => {
+    fullSettingsSave()
    switchView(getCurrentView(), VIEWS.landing)
 }

@ -1135,6 +1155,7 @@ const settingsMinRAMLabel     = document.getElementById('settingsMinRAMLabel')
 const settingsMemoryTotal     = document.getElementById('settingsMemoryTotal')
 const settingsMemoryAvail     = document.getElementById('settingsMemoryAvail')
 const settingsJavaExecDetails = document.getElementById('settingsJavaExecDetails')
+const settingsJavaReqDesc     = document.getElementById('settingsJavaReqDesc')

 // Store maximum memory values.
 const SETTINGS_MAX_MEMORY = ConfigManager.getAbsoluteMaxRAM()
@ -1342,12 +1363,24 @@ function populateJavaExecDetails(execPath){
    })
 }

+function populateJavaReqDesc() {
+    const mcVer = DistroManager.getDistribution().getServer(ConfigManager.getSelectedServer()).getMinecraftVersion()
+    if(Util.mcVersionAtLeast('1.17', mcVer)) {
+        settingsJavaReqDesc.innerHTML = 'Requires Java 17 x64.'
+    } else {
+        settingsJavaReqDesc.innerHTML = 'Requires Java 8 x64.'
+    }
+    
+}
+
 /**
 * Prepare the Java tab for display.
 */
 function prepareJavaTab(){
    bindRangeSlider()
    populateMemoryStatus()
+    populateJavaReqDesc()
+    populateJavaExecDetails()
 }

 /**
--- a/app/assets/js/scripts/uibinder.js
+++ b/app/assets/js/scripts/uibinder.js
@ -137,6 +137,7 @@ function onDistroRefresh(data){
    refreshServerStatus()
    initNews()
    syncModConfigurations(data)
+    ensureJavaSettings(data)
 }

 /**
@ -223,6 +224,21 @@ function syncModConfigurations(data){
    ConfigManager.save()
 }

+/**
+ * Ensure java configurations are present for the available servers.
+ * 
+ * @param {Object} data The distro index object.
+ */
+function ensureJavaSettings(data) {
+
+    // Nothing too fancy for now.
+    for(const serv of data.getServers()){
+        ConfigManager.ensureJavaConfig(serv.getID(), serv.getMinecraftVersion())
+    }
+
+    ConfigManager.save()
+}
+
 /**
 * Recursively scan for optional sub modules. If none are found,
 * this function returns a boolean. If optional sub modules do exist,
@ -434,6 +450,7 @@ ipcRenderer.on('distributionIndexDone', (event, res) => {
    if(res) {
        const data = DistroManager.getDistribution()
        syncModConfigurations(data)
+        ensureJavaSettings(data)
        if(document.readyState === 'interactive' || document.readyState === 'complete'){
            showMainUI(data)
        } else {
@ -448,3 +465,13 @@ ipcRenderer.on('distributionIndexDone', (event, res) => {
        }
    }
 })
+
+// Util for development
+function devModeToggle() {
+    DistroManager.setDevMode(true)
+    DistroManager.pullLocal().then((data) => {
+        ensureJavaSettings(data)
+        updateSelectedServer(data.getServers()[0])
+        syncModConfigurations(data)
+    })
+}
--- a/app/settings.ejs
+++ b/app/settings.ejs
@ -189,7 +189,7 @@
                        <div class="settingsMemoryContentItem">
                            <span class="settingsMemoryHeader">Maximum RAM</span>
                            <div class="settingsMemoryActionContainer">
-                                <div id="settingsMaxRAMRange" class="rangeSlider" cValue="MaxRAM" min="3" max="8" value="3" step="0.5">
+                                <div id="settingsMaxRAMRange" class="rangeSlider" cValue="MaxRAM" serverDependent min="3" max="8" value="3" step="0.5">
                                    <div class="rangeSliderBar"></div>
                                    <div class="rangeSliderTrack"></div>
                                </div>
@ -199,7 +199,7 @@
                        <div class="settingsMemoryContentItem">
                            <span class="settingsMemoryHeader">Minimum RAM</span>
                            <div class="settingsMemoryActionContainer">
-                                <div id="settingsMinRAMRange" class="rangeSlider" cValue="MinRAM" min="3" max="8" value="3" step="0.5">
+                                <div id="settingsMinRAMRange" class="rangeSlider" cValue="MinRAM" serverDependent min="3" max="8" value="3" step="0.5">
                                    <div class="rangeSliderBar"></div>
                                    <div class="rangeSliderTrack"></div>
                                </div>
@ -241,11 +241,11 @@
                                </g>
                            </svg>
                        </div>
-                        <input class="settingsFileSelVal" id="settingsJavaExecVal" type="text" value="null" cValue="JavaExecutable" disabled>
+                        <input class="settingsFileSelVal" id="settingsJavaExecVal" type="text" value="null" cValue="JavaExecutable" serverDependent disabled>
                        <button class="settingsFileSelButton" id="settingsJavaExecSel" dialogTitle="Select Java Executable" dialogDirectory="false">Choose File</button>
                    </div>
                </div>
-                <div class="settingsFileSelDesc">The Java executable is validated before game launch. <strong>Requires Java 8 x64.</strong><br>The path should end with <strong>bin<%= process.platform === 'win32' ? '\\javaw.exe' : '/java' %></strong>.</div>
+                <div class="settingsFileSelDesc">The Java executable is validated before game launch. <strong id="settingsJavaReqDesc">Requires Java 8 x64.</strong><br>The path should end with <strong>bin<%= process.platform === 'win32' ? '\\javaw.exe' : '/java' %></strong>.</div>
            </div>
            <div id="settingsJVMOptsContainer">
                <div id="settingsJVMOptsTitle">Additional JVM Options</div>
@ -264,7 +264,7 @@
                            </g>
                        </svg>
                    </div>
-                    <input id="settingsJVMOptsVal" cValue="JVMOptions" type="text">
+                    <input id="settingsJVMOptsVal" cValue="JVMOptions" serverDependent type="text">
                </div>
                <div id="settingsJVMOptsDesc">Options to be provided to the JVM at runtime. <em>-Xms</em> and <em>-Xmx</em> should not be included.<br><a href="https://docs.oracle.com/javase/8/docs/technotes/tools/<%= process.platform === 'win32' ? 'windows' : 'unix' %>/java.html">Available Options for Java 8</a>.</div>
            </div>
--- a/package-lock.json
+++ b/package-lock.json
@ -21,6 +21,7 @@
        "got": "^11.8.5",
        "helios-core": "~0.1.2",
        "jquery": "^3.6.1",
+        "node-disk-info": "^1.3.0",
        "node-stream-zip": "^1.15.0",
        "request": "^2.88.2",
        "semver": "^7.3.8",
@ -2439,7 +2440,6 @@
      "version": "0.6.3",
      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
      "integrity": "sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==",
-      "dev": true,
      "dependencies": {
        "safer-buffer": ">= 2.1.2 < 3.0.0"
      },
@ -2973,6 +2973,17 @@
      "dev": true,
      "optional": true
    },
+    "node_modules/node-disk-info": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/node-disk-info/-/node-disk-info-1.3.0.tgz",
+      "integrity": "sha512-NEx858vJZ0AoBtmD/ChBIHLjFTF28xCsDIgmFl4jtGKsvlUx9DU/OrMDjvj3qp/E4hzLN0HvTg7eJx5XFQvbeg==",
+      "dependencies": {
+        "iconv-lite": "^0.6.2"
+      },
+      "engines": {
+        "node": ">= 12"
+      }
+    },
    "node_modules/node-fetch": {
      "version": "2.6.7",
      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.7.tgz",
@ -6107,7 +6118,6 @@
      "version": "0.6.3",
      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
      "integrity": "sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==",
-      "dev": true,
      "requires": {
        "safer-buffer": ">= 2.1.2 < 3.0.0"
      }
@ -6510,6 +6520,14 @@
      "dev": true,
      "optional": true
    },
+    "node-disk-info": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/node-disk-info/-/node-disk-info-1.3.0.tgz",
+      "integrity": "sha512-NEx858vJZ0AoBtmD/ChBIHLjFTF28xCsDIgmFl4jtGKsvlUx9DU/OrMDjvj3qp/E4hzLN0HvTg7eJx5XFQvbeg==",
+      "requires": {
+        "iconv-lite": "^0.6.2"
+      }
+    },
    "node-fetch": {
      "version": "2.6.7",
      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.7.tgz",
--- a/package.json
+++ b/package.json
@ -35,6 +35,7 @@
    "got": "^11.8.5",
    "helios-core": "~0.1.2",
    "jquery": "^3.6.1",
+    "node-disk-info": "^1.3.0",
    "node-stream-zip": "^1.15.0",
    "request": "^2.88.2",
    "semver": "^7.3.8",