aboutsummaryrefslogtreecommitdiffhomepage
path: root/server/lib/plugins/plugin-manager.ts
blob: 85ee3decb0df7dfc13d50919e63bc3ad4d378fd3 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
import { PluginModel } from '../../models/server/plugin'
import { logger } from '../../helpers/logger'
import { basename, join } from 'path'
import { CONFIG } from '../../initializers/config'
import { isLibraryCodeValid, isPackageJSONValid } from '../../helpers/custom-validators/plugins'
import { ClientScript, 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'
import { outputFile } from 'fs-extra'
import { RegisterSettingOptions } from '../../../shared/models/plugins/register-setting.model'
import { RegisterHookOptions } from '../../../shared/models/plugins/register-hook.model'
import { PluginSettingsManager } from '../../../shared/models/plugins/plugin-settings-manager.model'
import { PluginStorageManager } from '../../../shared/models/plugins/plugin-storage-manager.model'
import { ServerHookName, ServerHook } from '../../../shared/models/plugins/server-hook.model'
import { isCatchable, isPromise } from '../../../shared/core-utils/miscs/miscs'
import { getHookType, internalRunHook } from '../../../shared/core-utils/plugins/hooks'
import { HookType } from '../../../shared/models/plugins/hook-type.enum'

export interface RegisteredPlugin {
  npmName: string
  name: string
  version: string
  description: string
  peertubeEngine: string

  type: PluginType

  path: string

  staticDirs: { [name: string]: string }
  clientScripts: { [name: string]: ClientScript }

  css: string[]

  // Only if this is a plugin
  unregister?: Function
}

export interface HookInformationValue {
  npmName: string
  pluginName: string
  handler: Function
  priority: number
}

export class PluginManager implements ServerHook {

  private static instance: PluginManager

  private registeredPlugins: { [ name: string ]: RegisteredPlugin } = {}
  private settings: { [ name: string ]: RegisterSettingOptions[] } = {}
  private hooks: { [ name: string ]: HookInformationValue[] } = {}

  private constructor () {
  }

  // ###################### Getters ######################

  isRegistered (npmName: string) {
    return !!this.getRegisteredPluginOrTheme(npmName)
  }

  getRegisteredPluginOrTheme (npmName: string) {
    return this.registeredPlugins[npmName]
  }

  getRegisteredPlugin (name: string) {
    const npmName = PluginModel.buildNpmName(name, PluginType.PLUGIN)
    const registered = this.getRegisteredPluginOrTheme(npmName)

    if (!registered || registered.type !== PluginType.PLUGIN) return undefined

    return registered
  }

  getRegisteredTheme (name: string) {
    const npmName = PluginModel.buildNpmName(name, PluginType.THEME)
    const registered = this.getRegisteredPluginOrTheme(npmName)

    if (!registered || registered.type !== PluginType.THEME) return undefined

    return registered
  }

  getRegisteredPlugins () {
    return this.getRegisteredPluginsOrThemes(PluginType.PLUGIN)
  }

  getRegisteredThemes () {
    return this.getRegisteredPluginsOrThemes(PluginType.THEME)
  }

  getRegisteredSettings (npmName: string) {
    return this.settings[npmName] || []
  }

  // ###################### Hooks ######################

  async runHook (hookName: ServerHookName, param?: any) {
    let result = param

    if (!this.hooks[hookName]) return result

    const hookType = getHookType(hookName)

    for (const hook of this.hooks[hookName]) {
      result = await internalRunHook(hook.handler, hookType, param, err => {
        logger.error('Cannot run hook %s of plugin %s.', hookName, hook.pluginName, { err })
      })
    }

    return result
  }

  // ###################### Registration ######################

  async registerPluginsAndThemes () {
    await this.resetCSSGlobalFile()

    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()
  }

  // Don't need the plugin type since themes cannot register server code
  async unregister (npmName: string) {
    logger.info('Unregister plugin %s.', npmName)

    const plugin = this.getRegisteredPluginOrTheme(npmName)

    if (!plugin) {
      throw new Error(`Unknown plugin ${npmName} to unregister`)
    }

    if (plugin.type === PluginType.PLUGIN) {
      await plugin.unregister()

      // Remove hooks of this plugin
      for (const key of Object.keys(this.hooks)) {
        this.hooks[key] = this.hooks[key].filter(h => h.pluginName !== npmName)
      }

      logger.info('Regenerating registered plugin CSS to global file.')
      await this.regeneratePluginGlobalCSS()
    }

    delete this.registeredPlugins[plugin.npmName]
  }

  // ###################### Installation ######################

  async install (toInstall: string, version?: string, fromDisk = false) {
    let plugin: PluginModel
    let npmName: string

    logger.info('Installing plugin %s.', toInstall)

    try {
      fromDisk
        ? await installNpmPluginFromDisk(toInstall)
        : await installNpmPlugin(toInstall, version)

      npmName = fromDisk ? basename(toInstall) : toInstall
      const pluginType = PluginModel.getTypeFromNpmName(npmName)
      const pluginName = PluginModel.normalizePluginName(npmName)

      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,
        homepage: packageJSON.homepage,
        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(npmName)
      } 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)

    return plugin
  }

  async update (toUpdate: string, version?: string, fromDisk = false) {
    const npmName = fromDisk ? basename(toUpdate) : toUpdate

    logger.info('Updating plugin %s.', npmName)

    // Unregister old hooks
    await this.unregister(npmName)

    return this.install(toUpdate, version, fromDisk)
  }

  async uninstall (npmName: string) {
    logger.info('Uninstalling plugin %s.', npmName)

    try {
      await this.unregister(npmName)
    } catch (err) {
      logger.warn('Cannot unregister plugin %s.', npmName, { err })
    }

    const plugin = await PluginModel.loadByNpmName(npmName)
    if (!plugin || plugin.uninstalled === true) {
      logger.error('Cannot uninstall plugin %s: it does not exist or is already uninstalled.', npmName)
      return
    }

    plugin.enabled = false
    plugin.uninstalled = true

    await plugin.save()

    await removeNpmPlugin(npmName)

    logger.info('Plugin %s uninstalled.', npmName)
  }

  // ###################### Private register ######################

  private async registerPluginOrTheme (plugin: PluginModel) {
    const npmName = PluginModel.buildNpmName(plugin.name, plugin.type)

    logger.info('Registering plugin or theme %s.', npmName)

    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)
    }

    const clientScripts: { [id: string]: ClientScript } = {}
    for (const c of packageJSON.clientScripts) {
      clientScripts[c.script] = c
    }

    this.registeredPlugins[ npmName ] = {
      npmName,
      name: plugin.name,
      type: plugin.type,
      version: plugin.version,
      description: plugin.description,
      peertubeEngine: plugin.peertubeEngine,
      path: pluginPath,
      staticDirs: packageJSON.staticDirs,
      clientScripts,
      css: packageJSON.css,
      unregister: library ? library.unregister : undefined
    }
  }

  private async registerPlugin (plugin: PluginModel, pluginPath: string, packageJSON: PluginPackageJson) {
    const npmName = PluginModel.buildNpmName(plugin.name, plugin.type)

    const registerHook = (options: RegisterHookOptions) => {
      if (!this.hooks[options.target]) this.hooks[options.target] = []

      this.hooks[options.target].push({
        npmName,
        pluginName: plugin.name,
        handler: options.handler,
        priority: options.priority || 0
      })
    }

    const registerSetting = (options: RegisterSettingOptions) => {
      if (!this.settings[npmName]) this.settings[npmName] = []

      this.settings[npmName].push(options)
    }

    const settingsManager: PluginSettingsManager = {
      getSetting: (name: string) => PluginModel.getSetting(plugin.name, plugin.type, name),

      setSetting: (name: string, value: string) => PluginModel.setSetting(plugin.name, plugin.type, name, value)
    }

    const storageManager: PluginStorageManager = {
      getData: (key: string) => PluginModel.getData(plugin.name, plugin.type, key),

      storeData: (key: string, data: any) => PluginModel.storeData(plugin.name, plugin.type, key, data)
    }

    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,
      registerSetting,
      settingsManager,
      storageManager
    }).catch(err => logger.error('Cannot register plugin %s.', npmName, { err }))

    logger.info('Add plugin %s CSS to global file.', npmName)

    await this.addCSSToGlobalFile(pluginPath, packageJSON.css)

    return library
  }

  // ###################### CSS ######################

  private resetCSSGlobalFile () {
    return outputFile(PLUGIN_GLOBAL_CSS_PATH, '')
  }

  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<void>((res, rej) => {
      const inputStream = createReadStream(input)
      const outputStream = createWriteStream(output, { flags: 'a' })

      inputStream.pipe(outputStream)

      inputStream.on('end', () => res())
      inputStream.on('error', err => rej(err))
    })
  }

  private async regeneratePluginGlobalCSS () {
    await this.resetCSSGlobalFile()

    for (const key of Object.keys(this.getRegisteredPlugins())) {
      const plugin = this.registeredPlugins[key]

      await this.addCSSToGlobalFile(plugin.path, plugin.css)
    }
  }

  // ###################### Utils ######################

  private sortHooksByPriority () {
    for (const hookName of Object.keys(this.hooks)) {
      this.hooks[hookName].sort((a, b) => {
        return b.priority - a.priority
      })
    }
  }

  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 npmName = PluginModel.buildNpmName(pluginName, pluginType)

    return join(CONFIG.STORAGE.PLUGINS_DIR, 'node_modules', npmName)
  }

  // ###################### Private getters ######################

  private getRegisteredPluginsOrThemes (type: PluginType) {
    const plugins: RegisteredPlugin[] = []

    for (const npmName of Object.keys(this.registeredPlugins)) {
      const plugin = this.registeredPlugins[ npmName ]
      if (plugin.type !== type) continue

      plugins.push(plugin)
    }

    return plugins
  }

  static get Instance () {
    return this.instance || (this.instance = new this())
  }
}