test(files_external): Ensure Home folder permissions are correct

Signed-off-by: Louis Chemineau <louis@chmn.me>

cypress/e2e/files_external/StorageUtils.ts

@@ -9,10 +9,15 @@ export type StorageConfig = {
 	[key: string]: string
 }
 
+export type StorageMountOption = {
+	readonly: boolean
+}
+
 export enum StorageBackend {
 	DAV = 'dav',
 	SMB = 'smb',
 	SFTP = 'sftp',
+	LOCAL = 'local',
 }
 
 export enum AuthBackend {
@@ -22,6 +27,7 @@ export enum AuthBackend {
 	SessionCredentials = 'password::sessioncredentials',
 	UserGlobalAuth = 'password::global::user',
 	UserProvided = 'password::userprovided',
+	Null = 'null::null',
 }
 
 /**
@@ -35,4 +41,20 @@ export function createStorageWithConfig(mountPoint: string, storageBackend: Stor
 
 	cy.log(`Creating storage with command: ${command}`)
 	return cy.runOccCommand(command)
+		.then(({ stdout }) => {
+			return stdout.replace('Storage created with id ', '')
+		})
+}
+
+export function setStorageMountOptions(mountId: string, options: StorageMountOption) {
+	for (const [key, value] of Object.entries(options)) {
+		cy.runOccCommand(`files_external:option ${mountId} ${key} ${value}`)
+	}
+}
+
+export function deleteAllExternalStorages() {
+	cy.runOccCommand('files_external:list --all --output=json').then(({ stdout }) => {
+		const list = JSON.parse(stdout)
+		list.forEach((storage) => cy.runOccCommand(`files_external:delete --yes ${storage.mount_id}`), { failOnNonZeroExit: false })
+	})
 }

cypress/e2e/files_external/home-folder-root-mount-permissions.cy.ts

@@ -0,0 +1,46 @@
+/**
+ * SPDX-FileCopyrightText: 2022 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+import { User } from '@nextcloud/cypress'
+import { AuthBackend, createStorageWithConfig, deleteAllExternalStorages, setStorageMountOptions, StorageBackend } from './StorageUtils'
+
+describe('Home folder root mount permissions', { testIsolation: true }, () => {
+	let user1: User
+
+	before(() => {
+		cy.runOccCommand('app:enable files_external')
+		cy.createRandomUser().then((user) => { user1 = user })
+	})
+
+	after(() => {
+		deleteAllExternalStorages()
+		cy.runOccCommand('app:disable files_external')
+	})
+
+	it('Does not show write actions on read-only storage mounted at the root of the user\'s home folder', () => {
+		cy.login(user1)
+		cy.visit('/apps/files/')
+		cy.runOccCommand('config:app:get files overwrites_home_folders --default-value=[]')
+			.then(({ stdout }) => assert.equal(stdout.trim(), '[]'))
+
+		cy.get('[data-cy-upload-picker=""]').should('exist')
+
+		createStorageWithConfig('/', StorageBackend.LOCAL, AuthBackend.Null, { datadir: '/tmp' })
+			.then((id) => setStorageMountOptions(id, { readonly: true }))
+		// HACK: somehow, we need to create an external folder targeting a subpath for the previous one to show.
+		createStorageWithConfig('/a', StorageBackend.LOCAL, AuthBackend.Null, { datadir: '/tmp' })
+		cy.visit('/apps/files/')
+		cy.visit('/apps/files/')
+		cy.runOccCommand('config:app:get files overwrites_home_folders')
+			.then(({ stdout }) => assert.equal(stdout.trim(), '["files_external"]'))
+		cy.get('[data-cy-upload-picker=""]').should('not.exist')
+
+		deleteAllExternalStorages()
+		cy.visit('/apps/files/')
+		cy.runOccCommand('config:app:get files overwrites_home_folders')
+			.then(({ stdout }) => assert.equal(stdout.trim(), '[]'))
+		cy.get('[data-cy-upload-picker=""]').should('exist')
+	})
+})