import { PluginModel } from '../../models/server/plugin' import { logger } from '../../helpers/logger' import { RegisterHookOptions } from '../../../shared/models/plugins/register.model' import { basename, join } from 'path' import { CONFIG } from '../../initializers/config' import { isLibraryCodeValid, isPackageJSONValid } from '../../helpers/custom-validators/plugins' import { PluginPackageJson } from '../../../shared/models/plugins/plugin-package-json.model' import { PluginLibrary } from '../../../shared/models/plugins/plugin-library.model' import { createReadStream, createWriteStream } from 'fs' import { PLUGIN_GLOBAL_CSS_PATH } from '../../initializers/constants' import { PluginType } from '../../../shared/models/plugins/plugin.type' import { installNpmPlugin, installNpmPluginFromDisk, removeNpmPlugin } from './yarn' export interface RegisteredPlugin { name: string version: string description: string peertubeEngine: string type: PluginType path: string staticDirs: { [name: string]: string } css: string[] // Only if this is a plugin unregister?: Function } export interface HookInformationValue { pluginName: string handler: Function priority: number } export class PluginManager { private static instance: PluginManager private registeredPlugins: { [ name: string ]: RegisteredPlugin } = {} private hooks: { [ name: string ]: HookInformationValue[] } = {} private constructor () { } async registerPlugins () { const plugins = await PluginModel.listEnabledPluginsAndThemes() for (const plugin of plugins) { try { await this.registerPluginOrTheme(plugin) } catch (err) { logger.error('Cannot register plugin %s, skipping.', plugin.name, { err }) } } this.sortHooksByPriority() } getRegisteredPlugin (name: string) { return this.registeredPlugins[ name ] } getRegisteredTheme (name: string) { const registered = this.getRegisteredPlugin(name) if (!registered || registered.type !== PluginType.THEME) return undefined return registered } async unregister (name: string) { const plugin = this.getRegisteredPlugin(name) if (!plugin) { throw new Error(`Unknown plugin ${name} to unregister`) } if (plugin.type === PluginType.THEME) { throw new Error(`Cannot unregister ${name}: this is a theme`) } await plugin.unregister() } async install (toInstall: string, version: string, fromDisk = false) { let plugin: PluginModel let name: string logger.info('Installing plugin %s.', toInstall) try { fromDisk ? await installNpmPluginFromDisk(toInstall) : await installNpmPlugin(toInstall, version) name = fromDisk ? basename(toInstall) : toInstall const pluginType = name.startsWith('peertube-theme-') ? PluginType.THEME : PluginType.PLUGIN const pluginName = this.normalizePluginName(name) const packageJSON = this.getPackageJSON(pluginName, pluginType) if (!isPackageJSONValid(packageJSON, pluginType)) { throw new Error('PackageJSON is invalid.') } [ plugin ] = await PluginModel.upsert({ name: pluginName, description: packageJSON.description, type: pluginType, version: packageJSON.version, enabled: true, uninstalled: false, peertubeEngine: packageJSON.engine.peertube }, { returning: true }) } catch (err) { logger.error('Cannot install plugin %s, removing it...', toInstall, { err }) try { await removeNpmPlugin(name) } catch (err) { logger.error('Cannot remove plugin %s after failed installation.', toInstall, { err }) } throw err } logger.info('Successful installation of plugin %s.', toInstall) await this.registerPluginOrTheme(plugin) } async uninstall (packageName: string) { await PluginModel.uninstall(this.normalizePluginName(packageName)) await removeNpmPlugin(packageName) } private async registerPluginOrTheme (plugin: PluginModel) { logger.info('Registering plugin or theme %s.', plugin.name) const packageJSON = this.getPackageJSON(plugin.name, plugin.type) const pluginPath = this.getPluginPath(plugin.name, plugin.type) if (!isPackageJSONValid(packageJSON, plugin.type)) { throw new Error('Package.JSON is invalid.') } let library: PluginLibrary if (plugin.type === PluginType.PLUGIN) { library = await this.registerPlugin(plugin, pluginPath, packageJSON) } this.registeredPlugins[ plugin.name ] = { name: plugin.name, type: plugin.type, version: plugin.version, description: plugin.description, peertubeEngine: plugin.peertubeEngine, path: pluginPath, staticDirs: packageJSON.staticDirs, css: packageJSON.css, unregister: library ? library.unregister : undefined } } private async registerPlugin (plugin: PluginModel, pluginPath: string, packageJSON: PluginPackageJson) { const registerHook = (options: RegisterHookOptions) => { if (!this.hooks[options.target]) this.hooks[options.target] = [] this.hooks[options.target].push({ pluginName: plugin.name, handler: options.handler, priority: options.priority || 0 }) } const library: PluginLibrary = require(join(pluginPath, packageJSON.library)) if (!isLibraryCodeValid(library)) { throw new Error('Library code is not valid (miss register or unregister function)') } library.register({ registerHook }) logger.info('Add plugin %s CSS to global file.', plugin.name) await this.addCSSToGlobalFile(pluginPath, packageJSON.css) return library } private sortHooksByPriority () { for (const hookName of Object.keys(this.hooks)) { this.hooks[hookName].sort((a, b) => { return b.priority - a.priority }) } } private async addCSSToGlobalFile (pluginPath: string, cssRelativePaths: string[]) { for (const cssPath of cssRelativePaths) { await this.concatFiles(join(pluginPath, cssPath), PLUGIN_GLOBAL_CSS_PATH) } } private concatFiles (input: string, output: string) { return new Promise((res, rej) => { const outputStream = createWriteStream(input) const inputStream = createReadStream(output) inputStream.pipe(outputStream) inputStream.on('end', () => res()) inputStream.on('error', err => rej(err)) }) } private getPackageJSON (pluginName: string, pluginType: PluginType) { const pluginPath = join(this.getPluginPath(pluginName, pluginType), 'package.json') return require(pluginPath) as PluginPackageJson } private getPluginPath (pluginName: string, pluginType: PluginType) { const prefix = pluginType === PluginType.PLUGIN ? 'peertube-plugin-' : 'peertube-theme-' return join(CONFIG.STORAGE.PLUGINS_DIR, 'node_modules', prefix + pluginName) } private normalizePluginName (name: string) { return name.replace(/^peertube-((theme)|(plugin))-/, '') } static get Instance () { return this.instance || (this.instance = new this()) } }