Virtual server folder with keys management

Author: Dahlgren

.github/workflows/node.yml

@@ -14,6 +14,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     strategy:
+      fail-fast: false
       matrix:
         node-version:
           - 14.x

config.js.example

@@ -13,6 +13,14 @@ module.exports = {
     '@mod1',
     '@mod2',
   ],
+  virtualServer: {
+    enabled: false, // If virtual servers should be used
+    fileExtensions: [ // Extra files in root of server folder that should be copied to virtual servers
+      '.json'
+    ],
+    folders: [ // Extra folders in root of server folder that should be linked to virtual servers
+    ]
+  },
   admins: [], // add steam IDs here to enable #login without password
   auth: { // If both username and password is set, HTTP Basic Auth will be used. You may use an array to specify more than one user.
     username: '', // Username for HTTP Basic Auth

lib/server.js

@@ -5,6 +5,8 @@ var slugify = require('slugify')
 
 var ArmaServer = require('arma-server')
 
+var virtualServer = require('./virtualServer')
+
 var queryInterval = 5000
 var queryTypes = {
   arma1: 'arma',
@@ -132,6 +134,29 @@ Server.prototype.start = function () {
     return this
   }
 
+  var self = this
+
+  if (self.config.virtualServer && self.config.virtualServer.enabled) {
+    virtualServer.create(self.config, self.mods)
+      .then((serverFolder) => {
+        self.virtualServerFolder = serverFolder
+        self.path = serverFolder
+        self.realStart()
+      })
+      .catch((err) => {
+        console.error('Error creating virtual server folder:', err)
+      })
+  } else {
+    self.path = self.config.path
+    self.realStart()
+  }
+}
+
+Server.prototype.realStart = function () {
+  if (this.instance) {
+    return this
+  }
+
   var parameters = this.getParameters()
   var server = new ArmaServer.Server({
     additionalConfigurationOptions: this.getAdditionalConfigurationOptions(),
@@ -152,7 +177,7 @@ Server.prototype.start = function () {
     parameters: parameters,
     password: this.password,
     passwordAdmin: this.admin_password,
-    path: this.config.path,
+    path: this.path,
     persistent: this.persistent ? 1 : 0,
     platform: this.config.type,
     players: this.max_players,
@@ -171,8 +196,13 @@ Server.prototype.start = function () {
     self.instance = null
 
     self.stopHeadlessClients()
-
-    self.emit('state')
+      .then(() => {
+        if (self.virtualServerFolder) {
+          virtualServer.remove(self.virtualServerFolder)
+          self.virtualServerFolder = null
+        }
+        self.emit('state')
+      })
   })
 
   this.pid = instance.pid
@@ -207,7 +237,7 @@ Server.prototype.startHeadlessClients = function () {
       mods: self.mods,
       parameters: parameters,
       password: self.password,
-      path: self.config.path,
+      path: self.path,
       platform: self.config.type,
       port: self.port
     })
@@ -248,10 +278,29 @@ Server.prototype.stop = function (cb) {
 }
 
 Server.prototype.stopHeadlessClients = function () {
-  this.headlessClientInstances.map(function (headlessClientInstance) {
-    headlessClientInstance.kill()
+  var self = this
+  return Promise.all(this.headlessClientInstances.map(function (headlessClientInstance) {
+    var handled = false
+    return new Promise(function (resolve, reject) {
+      headlessClientInstance.on('close', function () {
+        if (!handled) {
+          handled = true
+          resolve()
+        }
+      })
+
+      setTimeout(function () {
+        if (!handled) {
+          handled = true
+          resolve()
+        }
+      }, 5000)
+
+      headlessClientInstance.kill()
+    })
+  })).then(function () {
+    self.headlessClientInstances = []
   })
-  this.headlessClientInstances = []
 }
 
 Server.prototype.toJSON = function () {

lib/virtualServer.js

@@ -0,0 +1,141 @@
+var fs = require('fs')
+var fsExtra = require('fs.extra')
+var _ = require('lodash')
+var glob = require('glob')
+var os = require('os')
+var path = require('path')
+
+const requiredFileExtensions = [
+  '.dll',
+  '.exe',
+  '.so',
+  '.txt' // Steam app id
+]
+
+const serverFolders = [
+  'addons',
+  'aow',
+  'argo',
+  'battleye',
+  'contact',
+  'csla',
+  'curator',
+  'dll',
+  'dta',
+  'enoch',
+  'expansion',
+  'heli',
+  'jets',
+  'kart',
+  'linux64',
+  'mark',
+  'mpmissions',
+  'orange',
+  'tacops',
+  'tank',
+  'vn',
+  'ws'
+]
+
+function copyKeys (config, serverFolder, mods) {
+  // Copy needed keys, file symlinks on Windows are sketchy
+  const keysFolder = path.join(serverFolder, 'keys')
+  return fs.promises.mkdir(keysFolder, { recursive: true })
+    .then(() => {
+      const defaultKeysPath = path.join(config.path, 'keys')
+      const defaultKeysPromise = fs.promises.readdir(defaultKeysPath)
+        .then((files) => files.filter((file) => path.extname(file) === '.bikey'))
+        .then((files) => files.map((file) => path.join(defaultKeysPath, file)))
+
+      const modKeysPromise = Promise.all(mods.map(mod => {
+        return new Promise((resolve, reject) => {
+          const modPath = path.join(config.path, mod)
+          glob(`${modPath}/**/*.bikey`, function (err, files) {
+            if (err) {
+              return reject(err)
+            }
+
+            return resolve(files)
+          })
+        })
+      })).then((modsFiles) => modsFiles.flat())
+
+      return Promise.all([defaultKeysPromise, modKeysPromise].map((promise) => {
+        return promise.then((keyFiles) => {
+          return Promise.all(keyFiles.map((keyFile) => {
+            return fs.promises.copyFile(keyFile, path.join(keysFolder, path.basename(keyFile)))
+          }))
+        })
+      })).catch((err) => {
+        console.error('Error copying keys:', err)
+      })
+    })
+}
+
+function copyFiles (config, serverFolder) {
+  const configFileExtensions = (config.virtualServer && config.virtualServer.fileExtensions) || []
+  const allowedFileExtensions = _.uniq(requiredFileExtensions.concat(configFileExtensions))
+
+  return fs.promises.readdir(config.path)
+    .then((files) => {
+      // Copy needed files, file symlinks on Windows are sketchy
+      const serverFiles = files.filter((file) => allowedFileExtensions.indexOf(path.extname(file)) >= 0 || path.basename(file) === 'arma3server' || path.basename(file) === 'arma3server_x64')
+      return Promise.all(serverFiles.map((file) => {
+        return fs.promises.copyFile(path.join(config.path, file), path.join(serverFolder, file))
+      }))
+    })
+}
+
+function createModFolders (config, serverFolder, mods) {
+  // Create virtual folders from default Arma and mods
+  const configFolders = (config.virtualServer && config.virtualServer.folders) || []
+  const serverMods = config.serverMods || []
+  const symlinkFolders = _.uniq(serverFolders
+    .concat(mods)
+    .concat(configFolders)
+    .concat(serverMods)
+    .map(function (folder) {
+      return folder.split(path.sep)[0]
+    })
+  )
+
+  return Promise.all(symlinkFolders.map((symlink) => {
+    return fs.promises.access(path.join(config.path, symlink))
+      .then(() => {
+        return fs.promises.symlink(path.join(config.path, symlink), path.join(serverFolder, symlink), 'junction')
+          .catch((err) => {
+            console.error('Could create symlink for', symlink, 'due to', err)
+          })
+      })
+      .catch(() => {})
+  }))
+}
+
+module.exports.create = function (config, mods) {
+  return fs.promises.mkdtemp(path.join(os.tmpdir(), 'arma-server-'))
+    .then((serverFolder) => {
+      console.log('Created virtual server folder:', serverFolder)
+
+      return Promise.all([
+        copyKeys(config, serverFolder, mods),
+        copyFiles(config, serverFolder),
+        createModFolders(config, serverFolder, mods)
+      ]).then(() => {
+        return serverFolder
+      })
+    })
+}
+
+module.exports.remove = function (folder, cb) {
+  if (folder) {
+    fsExtra.rmrf(folder, function (err) {
+      if (err) {
+        console.log('Error removing virtual server folder', err)
+      }
+
+      if (cb) {
+        cb(err)
+      }
+    })
+  }
+}