3 files changed, 58 insertions, 7 deletions

diff --git a/server/lib/plugins/plugin-helpers-builder.ts b/server/lib/plugins/plugin-helpers-builder.ts
index 35945422c..7b1def6e3 100644
--- a/server/lib/plugins/plugin-helpers-builder.ts
+++ b/server/lib/plugins/plugin-helpers-builder.ts
@@ -1,4 +1,5 @@
 import express from 'express'
+import { Server } from 'http'
 import { join } from 'path'
 import { ffprobePromise } from '@server/helpers/ffmpeg/ffprobe-utils'
 import { buildLogger } from '@server/helpers/logger'
@@ -17,12 +18,12 @@ import { MPlugin, MVideo, UserNotificationModelForApi } from '@server/types/mode
 import { PeerTubeHelpers } from '@server/types/plugins'
 import { VideoBlacklistCreate, VideoStorage } from '@shared/models'
 import { addAccountInBlocklist, addServerInBlocklist, removeAccountFromBlocklist, removeServerFromBlocklist } from '../blocklist'
+import { PeerTubeSocket } from '../peertube-socket'
 import { ServerConfigManager } from '../server-config-manager'
 import { blacklistVideo, unblacklistVideo } from '../video-blacklist'
 import { VideoPathManager } from '../video-path-manager'
-import { PeerTubeSocket } from '../peertube-socket'
 
-function buildPluginHelpers (pluginModel: MPlugin, npmName: string): PeerTubeHelpers {
+function buildPluginHelpers (httpServer: Server, pluginModel: MPlugin, npmName: string): PeerTubeHelpers {
   const logger = buildPluginLogger(npmName)
 
   const database = buildDatabaseHelpers()
@@ -30,7 +31,7 @@ function buildPluginHelpers (pluginModel: MPlugin, npmName: string): PeerTubeHel
 
   const config = buildConfigHelpers()
 
-  const server = buildServerHelpers()
+  const server = buildServerHelpers(httpServer)
 
   const moderation = buildModerationHelpers()
 
@@ -69,8 +70,10 @@ function buildDatabaseHelpers () {
   }
 }
 
-function buildServerHelpers () {
+function buildServerHelpers (httpServer: Server) {
   return {
+    getHTTPServer: () => httpServer,
+
     getServerActor: () => getServerActor()
   }
 }
@@ -218,6 +221,8 @@ function buildPluginRelatedHelpers (plugin: MPlugin, npmName: string) {
 
     getBaseRouterRoute: () => `/plugins/${plugin.name}/${plugin.version}/router/`,
 
+    getBaseWebSocketRoute: () => `/plugins/${plugin.name}/${plugin.version}/ws/`,
+
     getDataDirectoryPath: () => join(CONFIG.STORAGE.PLUGINS_DIR, 'data', npmName)
   }
 }
diff --git a/server/lib/plugins/plugin-manager.ts b/server/lib/plugins/plugin-manager.ts
index a46b97fa4..c4d9b6574 100644
--- a/server/lib/plugins/plugin-manager.ts
+++ b/server/lib/plugins/plugin-manager.ts
@@ -1,6 +1,7 @@
 import express from 'express'
 import { createReadStream, createWriteStream } from 'fs'
 import { ensureDir, outputFile, readJSON } from 'fs-extra'
+import { Server } from 'http'
 import { basename, join } from 'path'
 import { decachePlugin } from '@server/helpers/decache'
 import { ApplicationModel } from '@server/models/application/application'
@@ -67,9 +68,37 @@ export class PluginManager implements ServerHook {
   private hooks: { [name: string]: HookInformationValue[] } = {}
   private translations: PluginLocalesTranslations = {}
 
+  private server: Server
+
   private constructor () {
   }
 
+  init (server: Server) {
+    this.server = server
+  }
+
+  registerWebSocketRouter () {
+    this.server.on('upgrade', (request, socket, head) => {
+      const url = request.url
+
+      const matched = url.match(`/plugins/([^/]+)/([^/]+/)?ws(/.*)`)
+      if (!matched) return
+
+      const npmName = PluginModel.buildNpmName(matched[1], PluginType.PLUGIN)
+      const subRoute = matched[3]
+
+      const result = this.getRegisteredPluginOrTheme(npmName)
+      if (!result) return
+
+      const routes = result.registerHelpers.getWebSocketRoutes()
+
+      const wss = routes.find(r => r.route.startsWith(subRoute))
+      if (!wss) return
+
+      wss.handler(request, socket, head)
+    })
+  }
+
   // ###################### Getters ######################
 
   isRegistered (npmName: string) {
@@ -581,7 +610,7 @@ export class PluginManager implements ServerHook {
       })
     }
 
-    const registerHelpers = new RegisterHelpers(npmName, plugin, onHookAdded.bind(this))
+    const registerHelpers = new RegisterHelpers(npmName, plugin, this.server, onHookAdded.bind(this))
 
     return {
       registerStore: registerHelpers,
diff --git a/server/lib/plugins/register-helpers.ts b/server/lib/plugins/register-helpers.ts
index f4d405676..1aaef3606 100644
--- a/server/lib/plugins/register-helpers.ts
+++ b/server/lib/plugins/register-helpers.ts
@@ -1,4 +1,5 @@
 import express from 'express'
+import { Server } from 'http'
 import { logger } from '@server/helpers/logger'
 import { onExternalUserAuthenticated } from '@server/lib/auth/external-auth'
 import { VideoConstantManagerFactory } from '@server/lib/plugins/video-constant-manager-factory'
@@ -8,7 +9,8 @@ import {
   RegisterServerAuthExternalResult,
   RegisterServerAuthPassOptions,
   RegisterServerExternalAuthenticatedResult,
-  RegisterServerOptions
+  RegisterServerOptions,
+  RegisterServerWebSocketRouteOptions
 } from '@server/types/plugins'
 import {
   EncoderOptionsBuilder,
@@ -49,12 +51,15 @@ export class RegisterHelpers {
 
   private readonly onSettingsChangeCallbacks: SettingsChangeCallback[] = []
 
+  private readonly webSocketRoutes: RegisterServerWebSocketRouteOptions[] = []
+
   private readonly router: express.Router
   private readonly videoConstantManagerFactory: VideoConstantManagerFactory
 
   constructor (
     private readonly npmName: string,
     private readonly plugin: PluginModel,
+    private readonly server: Server,
     private readonly onHookAdded: (options: RegisterServerHookOptions) => void
   ) {
     this.router = express.Router()
@@ -66,6 +71,7 @@ export class RegisterHelpers {
     const registerSetting = this.buildRegisterSetting()
 
     const getRouter = this.buildGetRouter()
+    const registerWebSocketRoute = this.buildRegisterWebSocketRoute()
 
     const settingsManager = this.buildSettingsManager()
     const storageManager = this.buildStorageManager()
@@ -85,13 +91,14 @@ export class RegisterHelpers {
     const unregisterIdAndPassAuth = this.buildUnregisterIdAndPassAuth()
     const unregisterExternalAuth = this.buildUnregisterExternalAuth()
 
-    const peertubeHelpers = buildPluginHelpers(this.plugin, this.npmName)
+    const peertubeHelpers = buildPluginHelpers(this.server, this.plugin, this.npmName)
 
     return {
       registerHook,
       registerSetting,
 
       getRouter,
+      registerWebSocketRoute,
 
       settingsManager,
       storageManager,
@@ -180,10 +187,20 @@ export class RegisterHelpers {
     return this.onSettingsChangeCallbacks
   }
 
+  getWebSocketRoutes () {
+    return this.webSocketRoutes
+  }
+
   private buildGetRouter () {
     return () => this.router
   }
 
+  private buildRegisterWebSocketRoute () {
+    return (options: RegisterServerWebSocketRouteOptions) => {
+      this.webSocketRoutes.push(options)
+    }
+  }
+
   private buildRegisterSetting () {
     return (options: RegisterServerSettingOptions) => {
       this.settings.push(options)