[Ref/Fix] Improving checkDiskSpace (#3440)

* Move the "Path" schema into its own file

This is going to be used outside Legendary in the next commit

* Remove the check-disk-space package

Doing this within Heroic allows us to use already-established patterns
(dynamic import, helper functions like `genericSpawnWrapper`, validation
using Zod)

* Remove getFirstExistingParentPath

This was a little overcomplicated, and lead to issues on Windows (where
you don't necessarily have an existing root folder)

* Fixup `isWritable`

- As Flavio mentioned, `access` doesn't seem to work on Windows, so I
  replaced that with some PowerShell commands that check the same thing
- We have to call isWritable with the full path, as you can of course
  modify permissions on any folder, not just on a root directory/mount
  point

Since this info is now always accurate, we might want to make the
respective warning on the Frontend an error instead

package.json

@@ -66,7 +66,6 @@
     "@xhmikosr/decompress": "9.0.1",
     "@xhmikosr/decompress-targz": "7.0.0",
     "axios": "0.26.1",
-    "check-disk-space": "3.3.1",
     "classnames": "2.3.1",
     "compare-versions": "6.1.0",
     "crc": "4.3.2",

src/backend/main.ts

@@ -26,8 +26,6 @@ import 'backend/updater'
 import { autoUpdater } from 'electron-updater'
 import { cpus } from 'os'
 import {
-  access,
-  constants,
   existsSync,
   rmSync,
   unlinkSync,
@@ -40,7 +38,6 @@ import {
 import Backend from 'i18next-fs-backend'
 import i18next from 'i18next'
 import { join } from 'path'
-import checkDiskSpace from 'check-disk-space'
 import { DXVK, Winetricks } from './tools'
 import { GameConfig } from './game_config'
 import { GlobalConfig } from './config'
@@ -57,7 +54,6 @@ import {
   showItemInFolder,
   getFileSize,
   detectVCRedist,
-  getFirstExistingParentPath,
   getLatestReleases,
   getShellPath,
   getCurrentChangelog,
@@ -566,54 +562,27 @@ ipcMain.on('unlock', () => {
   }
 })
 
-ipcMain.handle('checkDiskSpace', async (event, folder) => {
-  const parent = getFirstExistingParentPath(folder)
-  return new Promise<DiskSpaceData>((res) => {
-    access(parent, constants.W_OK, async (writeError) => {
-      const { free, size: diskSize } = await checkDiskSpace(folder).catch(
-        (checkSpaceError) => {
-          logError(
-            [
-              'Failed to check disk space for',
-              `"${folder}":`,
-              checkSpaceError.stack ?? `${checkSpaceError}`
-            ],
-            LogPrefix.Backend
-          )
-          return { free: 0, size: 0 }
-        }
-      )
-      if (writeError) {
-        logWarning(
-          [
-            'Cannot write to',
-            `"${folder}":`,
-            writeError.stack ?? `${writeError}`
-          ],
-          LogPrefix.Backend
-        )
-      }
-
-      const isValidFlatpakPath = !(
-        isFlatpak &&
-        folder.startsWith(process.env.XDG_RUNTIME_DIR || '/run/user/')
-      )
-
-      if (!isValidFlatpakPath) {
-        logWarning(`Install location was not granted sandbox access!`)
-      }
-
-      const ret = {
-        free,
-        diskSize,
-        message: `${getFileSize(free)} / ${getFileSize(diskSize)}`,
-        validPath: !writeError,
-        validFlatpakPath: isValidFlatpakPath
-      }
-      logDebug(`${JSON.stringify(ret)}`, LogPrefix.Backend)
-      res(ret)
-    })
-  })
+ipcMain.handle('checkDiskSpace', async (_e, folder): Promise<DiskSpaceData> => {
+  // We only need to look at the root directory for used/free space
+  // Trying to query this for a directory that doesn't exist (which `folder`
+  // might be) will not work
+  const { root } = path.parse(folder)
+
+  // FIXME: Propagate errors
+  const parsedPath = Path.parse(folder)
+  const parsedRootPath = Path.parse(root)
+
+  const { freeSpace, totalSpace } = await getDiskInfo(parsedRootPath)
+  const pathIsWritable = await isWritable(parsedPath)
+  const pathIsFlatpakAccessible = isAccessibleWithinFlatpakSandbox(parsedPath)
+
+  return {
+    free: freeSpace,
+    diskSize: totalSpace,
+    validPath: pathIsWritable,
+    validFlatpakPath: pathIsFlatpakAccessible,
+    message: `${getFileSize(freeSpace)} / ${getFileSize(totalSpace)}`
+  }
 })
 
 ipcMain.handle('isFrameless', () => isFrameless())
@@ -1744,3 +1713,9 @@ import './wiki_game_info/ipc_handler'
 import './recent_games/ipc_handler'
 import './tools/ipc_handler'
 import './progress_bar'
+import {
+  getDiskInfo,
+  isAccessibleWithinFlatpakSandbox,
+  isWritable
+} from './utils/filesystem'
+import { Path } from './schemas'

src/backend/schemas.ts

@@ -0,0 +1,10 @@
+import { z } from 'zod'
+import path from 'path'
+
+const Path = z
+  .string()
+  .refine((val) => path.parse(val).root, 'Path is not valid')
+  .brand('Path')
+type Path = z.infer<typeof Path>
+
+export { Path }

src/backend/storeManagers/legendary/commands/base.ts

@@ -1,8 +1,10 @@
 import { z } from 'zod'
 import path from 'path'
-import { hasGame } from '../library'
 import { existsSync } from 'graceful-fs'
 
+import { Path } from 'backend/schemas'
+import { hasGame } from '../library'
+
 export const LegendaryAppName = z
   .string()
   .refine((val) => hasGame(val), {
@@ -17,12 +19,6 @@ export type LegendaryPlatform = z.infer<typeof LegendaryPlatform>
 export const NonEmptyString = z.string().min(1).brand('NonEmptyString')
 export type NonEmptyString = z.infer<typeof NonEmptyString>
 
-export const Path = z
-  .string()
-  .refine((val) => path.parse(val).root, 'Path is not valid')
-  .brand('Path')
-export type Path = z.infer<typeof Path>
-
 export const PositiveInteger = z
   .number()
   .int()

src/backend/storeManagers/legendary/commands/egl_sync.ts

@@ -1,4 +1,4 @@
-import { Path } from './base'
+import type { Path } from 'backend/schemas'
 
 interface EglSyncCommand {
   subcommand: 'egl-sync'

src/backend/storeManagers/legendary/commands/eos_overlay.ts

@@ -1,5 +1,6 @@
 import { z } from 'zod'
-import { LegendaryAppName, NonEmptyString, Path, ValidWinePrefix } from './base'
+import type { Path } from 'backend/schemas'
+import type { LegendaryAppName, NonEmptyString, ValidWinePrefix } from './base'
 
 const EosOverlayAction = z.enum([
   'install',

src/backend/storeManagers/legendary/commands/import.ts

@@ -1,4 +1,5 @@
-import { LegendaryAppName, LegendaryPlatform, Path } from './base'
+import type { Path } from 'backend/schemas'
+import type { LegendaryAppName, LegendaryPlatform } from './base'
 
 interface ImportCommand {
   subcommand: 'import'

src/backend/storeManagers/legendary/commands/install.ts

@@ -1,8 +1,8 @@
-import {
+import type { Path } from 'backend/schemas'
+import type {
   PositiveInteger,
   LegendaryAppName,
   NonEmptyString,
-  Path,
   URL,
   URI,
   LegendaryPlatform

src/backend/storeManagers/legendary/commands/launch.ts

@@ -1,4 +1,5 @@
-import { LegendaryAppName, NonEmptyString, Path } from './base'
+import type { Path } from 'backend/schemas'
+import type { LegendaryAppName, NonEmptyString } from './base'
 
 interface LaunchCommand {
   subcommand: 'launch'

src/backend/storeManagers/legendary/commands/move.ts

@@ -1,4 +1,5 @@
-import { LegendaryAppName, Path } from './base'
+import type { Path } from 'backend/schemas'
+import type { LegendaryAppName } from './base'
 
 interface MoveCommand {
   subcommand: 'move'

src/backend/storeManagers/legendary/commands/sync_saves.ts

@@ -1,4 +1,5 @@
-import { LegendaryAppName, Path } from './base'
+import type { Path } from 'backend/schemas'
+import type { LegendaryAppName } from './base'
 
 interface SyncSavesCommand {
   subcommand: 'sync-saves'

src/backend/storeManagers/legendary/eos_overlay/eos_overlay.ts

@@ -9,9 +9,10 @@ import { callAbortController } from 'backend/utils/aborthandler/aborthandler'
 import { sendGameStatusUpdate } from 'backend/utils'
 import { gameManagerMap } from '../..'
 import { LegendaryCommand } from '../commands'
-import { Path, ValidWinePrefix } from '../commands/base'
+import { ValidWinePrefix } from '../commands/base'
 import { setCurrentDownloadSize } from '../games'
 import { runRunnerCommand as runLegendaryCommand } from '../library'
+import { Path } from 'backend/schemas'
 
 import type { Runner } from 'common/types'
 

src/backend/storeManagers/legendary/games.ts

@@ -79,10 +79,10 @@ import {
   LegendaryAppName,
   LegendaryPlatform,
   NonEmptyString,
-  Path,
   PositiveInteger
 } from './commands/base'
 import { LegendaryCommand } from './commands'
+import { Path } from 'backend/schemas'
 
 /**
  * Alias for `LegendaryLibrary.listUpdateableGames`

src/backend/storeManagers/legendary/library.ts

@@ -53,7 +53,8 @@ import axios from 'axios'
 import { app } from 'electron'
 import { copySync } from 'fs-extra'
 import { LegendaryCommand } from './commands'
-import { LegendaryAppName, LegendaryPlatform, Path } from './commands/base'
+import { LegendaryAppName, LegendaryPlatform } from './commands/base'
+import { Path } from 'backend/schemas'
 import shlex from 'shlex'
 import { Entries } from 'type-fest'
 

src/backend/utils.ts

@@ -679,18 +679,6 @@ function detectVCRedist(mainWindow: BrowserWindow) {
   })
 }
 
-function getFirstExistingParentPath(directoryPath: string): string {
-  let parentDirectoryPath = directoryPath
-  let parentDirectoryFound = existsSync(parentDirectoryPath)
-
-  while (!parentDirectoryFound) {
-    parentDirectoryPath = normalize(parentDirectoryPath + '/..')
-    parentDirectoryFound = existsSync(parentDirectoryPath)
-  }
-
-  return parentDirectoryPath !== '.' ? parentDirectoryPath : ''
-}
-
 const getLatestReleases = async (): Promise<Release[]> => {
   const newReleases: Release[] = []
   logInfo('Checking for new Heroic Updates', LogPrefix.Backend)
@@ -1474,7 +1462,6 @@ export {
   shutdownWine,
   getInfo,
   getShellPath,
-  getFirstExistingParentPath,
   getLatestReleases,
   getWineFromProton,
   getFileSize,

src/backend/utils/compatibility_layers.ts

@@ -15,7 +15,8 @@ import { homedir } from 'os'
 import { dirname, join } from 'path'
 import { PlistObject, parse as plistParse } from 'plist'
 import LaunchCommand from '../storeManagers/legendary/commands/launch'
-import { NonEmptyString, Path } from '../storeManagers/legendary/commands/base'
+import { NonEmptyString } from '../storeManagers/legendary/commands/base'
+import { Path } from 'backend/schemas'
 
 /**
  * Loads the default wine installation path and version.

src/backend/utils/filesystem/index.ts

@@ -0,0 +1,45 @@
+import type { Path } from 'backend/schemas'
+import { isFlatpak } from 'backend/constants'
+
+interface DiskInfo {
+  freeSpace: number
+  totalSpace: number
+}
+
+async function getDiskInfo(path: Path): Promise<DiskInfo> {
+  switch (process.platform) {
+    case 'linux':
+    case 'darwin': {
+      const { getDiskInfo_unix } = await import('./unix')
+      return getDiskInfo_unix(path)
+    }
+    case 'win32': {
+      const { getDiskInfo_windows } = await import('./windows')
+      return getDiskInfo_windows(path)
+    }
+    default:
+      return { freeSpace: 0, totalSpace: 0 }
+  }
+}
+
+async function isWritable(path: Path): Promise<boolean> {
+  switch (process.platform) {
+    case 'linux':
+    case 'darwin': {
+      const { isWritable_unix } = await import('./unix')
+      return isWritable_unix(path)
+    }
+    case 'win32': {
+      const { isWritable_windows } = await import('./windows')
+      return isWritable_windows(path)
+    }
+    default:
+      return false
+  }
+}
+
+const isAccessibleWithinFlatpakSandbox = (path: Path): boolean =>
+  !isFlatpak || !path.startsWith(process.env.XDG_RUNTIME_DIR || '/run/user/')
+
+export { getDiskInfo, isWritable, isAccessibleWithinFlatpakSandbox }
+export type { DiskInfo }

src/backend/utils/filesystem/unix.ts

@@ -0,0 +1,24 @@
+import { genericSpawnWrapper } from '../os/processes'
+import { access } from 'fs/promises'
+
+import type { Path } from 'backend/schemas'
+import type { DiskInfo } from './index'
+
+async function getDiskInfo_unix(path: Path): Promise<DiskInfo> {
+  const { stdout } = await genericSpawnWrapper('df', ['-P', '-k', path])
+  const lineSplit = stdout.split('\n')[1].split(/\s+/)
+  const [, totalSpaceKiBStr, , freeSpaceKiBStr] = lineSplit
+  return {
+    totalSpace: Number(totalSpaceKiBStr ?? 0) * 1024,
+    freeSpace: Number(freeSpaceKiBStr ?? 0) * 1024
+  }
+}
+
+async function isWritable_unix(path: Path): Promise<boolean> {
+  return access(path).then(
+    () => true,
+    () => false
+  )
+}
+
+export { getDiskInfo_unix, isWritable_unix }