server/server -> server/core

server/core/middlewares/validators/oembed.ts

@@ -0,0 +1,157 @@
+import express from 'express'
+import { query } from 'express-validator'
+import { join } from 'path'
+import { HttpStatusCode, VideoPlaylistPrivacy, VideoPrivacy } from '@peertube/peertube-models'
+import { isTestOrDevInstance } from '@peertube/peertube-node-utils'
+import { loadVideo } from '@server/lib/model-loaders/index.js'
+import { VideoPlaylistModel } from '@server/models/video/video-playlist.js'
+import { isIdOrUUIDValid, isUUIDValid, toCompleteUUID } from '../../helpers/custom-validators/misc.js'
+import { WEBSERVER } from '../../initializers/constants.js'
+import { areValidationErrors } from './shared/index.js'
+
+const playlistPaths = [
+  join('videos', 'watch', 'playlist'),
+  join('w', 'p')
+]
+
+const videoPaths = [
+  join('videos', 'watch'),
+  'w'
+]
+
+function buildUrls (paths: string[]) {
+  return paths.map(p => WEBSERVER.SCHEME + '://' + join(WEBSERVER.HOST, p) + '/')
+}
+
+const startPlaylistURLs = buildUrls(playlistPaths)
+const startVideoURLs = buildUrls(videoPaths)
+
+const isURLOptions = {
+  require_host: true,
+  require_tld: true
+}
+
+// We validate 'localhost', so we don't have the top level domain
+if (isTestOrDevInstance()) {
+  isURLOptions.require_tld = false
+}
+
+const oembedValidator = [
+  query('url')
+    .isURL(isURLOptions),
+  query('maxwidth')
+    .optional()
+    .isInt(),
+  query('maxheight')
+    .optional()
+    .isInt(),
+  query('format')
+    .optional()
+    .isIn([ 'xml', 'json' ]),
+
+  async (req: express.Request, res: express.Response, next: express.NextFunction) => {
+    if (areValidationErrors(req, res)) return
+
+    if (req.query.format !== undefined && req.query.format !== 'json') {
+      return res.fail({
+        status: HttpStatusCode.NOT_IMPLEMENTED_501,
+        message: 'Requested format is not implemented on server.',
+        data: {
+          format: req.query.format
+        }
+      })
+    }
+
+    const url = req.query.url as string
+
+    let urlPath: string
+
+    try {
+      urlPath = new URL(url).pathname
+    } catch (err) {
+      return res.fail({
+        status: HttpStatusCode.BAD_REQUEST_400,
+        message: err.message,
+        data: {
+          url
+        }
+      })
+    }
+
+    const isPlaylist = startPlaylistURLs.some(u => url.startsWith(u))
+    const isVideo = isPlaylist ? false : startVideoURLs.some(u => url.startsWith(u))
+
+    const startIsOk = isVideo || isPlaylist
+
+    const parts = urlPath.split('/')
+
+    if (startIsOk === false || parts.length === 0) {
+      return res.fail({
+        status: HttpStatusCode.BAD_REQUEST_400,
+        message: 'Invalid url.',
+        data: {
+          url
+        }
+      })
+    }
+
+    const elementId = toCompleteUUID(parts.pop())
+    if (isIdOrUUIDValid(elementId) === false) {
+      return res.fail({ message: 'Invalid video or playlist id.' })
+    }
+
+    if (isVideo) {
+      const video = await loadVideo(elementId, 'all')
+
+      if (!video) {
+        return res.fail({
+          status: HttpStatusCode.NOT_FOUND_404,
+          message: 'Video not found'
+        })
+      }
+
+      if (
+        video.privacy === VideoPrivacy.PUBLIC ||
+        (video.privacy === VideoPrivacy.UNLISTED && isUUIDValid(elementId) === true)
+      ) {
+        res.locals.videoAll = video
+        return next()
+      }
+
+      return res.fail({
+        status: HttpStatusCode.FORBIDDEN_403,
+        message: 'Video is not publicly available'
+      })
+    }
+
+    // Is playlist
+
+    const videoPlaylist = await VideoPlaylistModel.loadWithAccountAndChannelSummary(elementId, undefined)
+    if (!videoPlaylist) {
+      return res.fail({
+        status: HttpStatusCode.NOT_FOUND_404,
+        message: 'Video playlist not found'
+      })
+    }
+
+    if (
+      videoPlaylist.privacy === VideoPlaylistPrivacy.PUBLIC ||
+      (videoPlaylist.privacy === VideoPlaylistPrivacy.UNLISTED && isUUIDValid(elementId))
+    ) {
+      res.locals.videoPlaylistSummary = videoPlaylist
+      return next()
+    }
+
+    return res.fail({
+      status: HttpStatusCode.FORBIDDEN_403,
+      message: 'Playlist is not public'
+    })
+  }
+
+]
+
+// ---------------------------------------------------------------------------
+
+export {
+  oembedValidator
+}