12 files changed, 526 insertions, 0 deletions

diff --git a/server/middlewares/validators/shared/abuses.ts b/server/middlewares/validators/shared/abuses.ts
new file mode 100644
index 000000000..4a20a55fa
--- /dev/null
+++ b/server/middlewares/validators/shared/abuses.ts
@@ -0,0 +1,25 @@
+import { Response } from 'express'
+import { AbuseModel } from '@server/models/abuse/abuse'
+import { HttpStatusCode } from '@shared/core-utils'
+
+async function doesAbuseExist (abuseId: number | string, res: Response) {
+  const abuse = await AbuseModel.loadByIdWithReporter(parseInt(abuseId + '', 10))
+
+  if (!abuse) {
+    res.fail({
+      status: HttpStatusCode.NOT_FOUND_404,
+      message: 'Abuse not found'
+    })
+
+    return false
+  }
+
+  res.locals.abuse = abuse
+  return true
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  doesAbuseExist
+}
diff --git a/server/middlewares/validators/shared/accounts.ts b/server/middlewares/validators/shared/accounts.ts
new file mode 100644
index 000000000..04da15441
--- /dev/null
+++ b/server/middlewares/validators/shared/accounts.ts
@@ -0,0 +1,65 @@
+import { Response } from 'express'
+import { AccountModel } from '@server/models/account/account'
+import { UserModel } from '@server/models/user/user'
+import { MAccountDefault } from '@server/types/models'
+import { HttpStatusCode } from '@shared/core-utils'
+
+function doesAccountIdExist (id: number | string, res: Response, sendNotFound = true) {
+  const promise = AccountModel.load(parseInt(id + '', 10))
+
+  return doesAccountExist(promise, res, sendNotFound)
+}
+
+function doesLocalAccountNameExist (name: string, res: Response, sendNotFound = true) {
+  const promise = AccountModel.loadLocalByName(name)
+
+  return doesAccountExist(promise, res, sendNotFound)
+}
+
+function doesAccountNameWithHostExist (nameWithDomain: string, res: Response, sendNotFound = true) {
+  const promise = AccountModel.loadByNameWithHost(nameWithDomain)
+
+  return doesAccountExist(promise, res, sendNotFound)
+}
+
+async function doesAccountExist (p: Promise<MAccountDefault>, res: Response, sendNotFound: boolean) {
+  const account = await p
+
+  if (!account) {
+    if (sendNotFound === true) {
+      res.fail({
+        status: HttpStatusCode.NOT_FOUND_404,
+        message: 'Account not found'
+      })
+    }
+    return false
+  }
+
+  res.locals.account = account
+  return true
+}
+
+async function doesUserFeedTokenCorrespond (id: number, token: string, res: Response) {
+  const user = await UserModel.loadByIdWithChannels(parseInt(id + '', 10))
+
+  if (token !== user.feedToken) {
+    res.fail({
+      status: HttpStatusCode.FORBIDDEN_403,
+      message: 'User and token mismatch'
+    })
+    return false
+  }
+
+  res.locals.user = user
+  return true
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  doesAccountIdExist,
+  doesLocalAccountNameExist,
+  doesAccountNameWithHostExist,
+  doesAccountExist,
+  doesUserFeedTokenCorrespond
+}
diff --git a/server/middlewares/validators/shared/index.ts b/server/middlewares/validators/shared/index.ts
new file mode 100644
index 000000000..fa89d05f2
--- /dev/null
+++ b/server/middlewares/validators/shared/index.ts
@@ -0,0 +1,11 @@
+export * from './abuses'
+export * from './accounts'
+export * from './utils'
+export * from './video-blacklists'
+export * from './video-captions'
+export * from './video-channels'
+export * from './video-comments'
+export * from './video-imports'
+export * from './video-ownerships'
+export * from './video-playlists'
+export * from './videos'
diff --git a/server/middlewares/validators/shared/utils.ts b/server/middlewares/validators/shared/utils.ts
new file mode 100644
index 000000000..d3e4870a9
--- /dev/null
+++ b/server/middlewares/validators/shared/utils.ts
@@ -0,0 +1,50 @@
+import * as express from 'express'
+import { query, validationResult } from 'express-validator'
+import { logger } from '../../../helpers/logger'
+
+function areValidationErrors (req: express.Request, res: express.Response) {
+  const errors = validationResult(req)
+
+  if (!errors.isEmpty()) {
+    logger.warn('Incorrect request parameters', { path: req.originalUrl, err: errors.mapped() })
+    res.fail({
+      message: 'Incorrect request parameters: ' + Object.keys(errors.mapped()).join(', '),
+      instance: req.originalUrl,
+      data: {
+        'invalid-params': errors.mapped()
+      }
+    })
+
+    return true
+  }
+
+  return false
+}
+
+function checkSort (sortableColumns: string[], tags: string[] = []) {
+  return [
+    query('sort').optional().isIn(sortableColumns).withMessage('Should have correct sortable column'),
+
+    (req: express.Request, res: express.Response, next: express.NextFunction) => {
+      logger.debug('Checking sort parameters', { parameters: req.query, tags })
+
+      if (areValidationErrors(req, res)) return
+
+      return next()
+    }
+  ]
+}
+
+function createSortableColumns (sortableColumns: string[]) {
+  const sortableColumnDesc = sortableColumns.map(sortableColumn => '-' + sortableColumn)
+
+  return sortableColumns.concat(sortableColumnDesc)
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  areValidationErrors,
+  checkSort,
+  createSortableColumns
+}
diff --git a/server/middlewares/validators/shared/video-blacklists.ts b/server/middlewares/validators/shared/video-blacklists.ts
new file mode 100644
index 000000000..01491c10f
--- /dev/null
+++ b/server/middlewares/validators/shared/video-blacklists.ts
@@ -0,0 +1,24 @@
+import { Response } from 'express'
+import { VideoBlacklistModel } from '@server/models/video/video-blacklist'
+import { HttpStatusCode } from '@shared/core-utils'
+
+async function doesVideoBlacklistExist (videoId: number, res: Response) {
+  const videoBlacklist = await VideoBlacklistModel.loadByVideoId(videoId)
+
+  if (videoBlacklist === null) {
+    res.fail({
+      status: HttpStatusCode.NOT_FOUND_404,
+      message: 'Blacklisted video not found'
+    })
+    return false
+  }
+
+  res.locals.videoBlacklist = videoBlacklist
+  return true
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  doesVideoBlacklistExist
+}
diff --git a/server/middlewares/validators/shared/video-captions.ts b/server/middlewares/validators/shared/video-captions.ts
new file mode 100644
index 000000000..80f6c5a52
--- /dev/null
+++ b/server/middlewares/validators/shared/video-captions.ts
@@ -0,0 +1,25 @@
+import { Response } from 'express'
+import { VideoCaptionModel } from '@server/models/video/video-caption'
+import { MVideoId } from '@server/types/models'
+import { HttpStatusCode } from '@shared/core-utils'
+
+async function doesVideoCaptionExist (video: MVideoId, language: string, res: Response) {
+  const videoCaption = await VideoCaptionModel.loadByVideoIdAndLanguage(video.id, language)
+
+  if (!videoCaption) {
+    res.fail({
+      status: HttpStatusCode.NOT_FOUND_404,
+      message: 'Video caption not found'
+    })
+    return false
+  }
+
+  res.locals.videoCaption = videoCaption
+  return true
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  doesVideoCaptionExist
+}
diff --git a/server/middlewares/validators/shared/video-channels.ts b/server/middlewares/validators/shared/video-channels.ts
new file mode 100644
index 000000000..fe2e663b7
--- /dev/null
+++ b/server/middlewares/validators/shared/video-channels.ts
@@ -0,0 +1,43 @@
+import * as express from 'express'
+import { VideoChannelModel } from '@server/models/video/video-channel'
+import { MChannelBannerAccountDefault } from '@server/types/models'
+import { HttpStatusCode } from '@shared/core-utils'
+
+async function doesLocalVideoChannelNameExist (name: string, res: express.Response) {
+  const videoChannel = await VideoChannelModel.loadLocalByNameAndPopulateAccount(name)
+
+  return processVideoChannelExist(videoChannel, res)
+}
+
+async function doesVideoChannelIdExist (id: number, res: express.Response) {
+  const videoChannel = await VideoChannelModel.loadAndPopulateAccount(+id)
+
+  return processVideoChannelExist(videoChannel, res)
+}
+
+async function doesVideoChannelNameWithHostExist (nameWithDomain: string, res: express.Response) {
+  const videoChannel = await VideoChannelModel.loadByNameWithHostAndPopulateAccount(nameWithDomain)
+
+  return processVideoChannelExist(videoChannel, res)
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  doesLocalVideoChannelNameExist,
+  doesVideoChannelIdExist,
+  doesVideoChannelNameWithHostExist
+}
+
+function processVideoChannelExist (videoChannel: MChannelBannerAccountDefault, res: express.Response) {
+  if (!videoChannel) {
+    res.fail({
+      status: HttpStatusCode.NOT_FOUND_404,
+      message: 'Video channel not found'
+    })
+    return false
+  }
+
+  res.locals.videoChannel = videoChannel
+  return true
+}
diff --git a/server/middlewares/validators/shared/video-comments.ts b/server/middlewares/validators/shared/video-comments.ts
new file mode 100644
index 000000000..83ea15c98
--- /dev/null
+++ b/server/middlewares/validators/shared/video-comments.ts
@@ -0,0 +1,73 @@
+import * as express from 'express'
+import { VideoCommentModel } from '@server/models/video/video-comment'
+import { MVideoId } from '@server/types/models'
+import { HttpStatusCode } from '@shared/core-utils'
+
+async function doesVideoCommentThreadExist (idArg: number | string, video: MVideoId, res: express.Response) {
+  const id = parseInt(idArg + '', 10)
+  const videoComment = await VideoCommentModel.loadById(id)
+
+  if (!videoComment) {
+    res.fail({
+      status: HttpStatusCode.NOT_FOUND_404,
+      message: 'Video comment thread not found'
+    })
+    return false
+  }
+
+  if (videoComment.videoId !== video.id) {
+    res.fail({ message: 'Video comment is not associated to this video.' })
+    return false
+  }
+
+  if (videoComment.inReplyToCommentId !== null) {
+    res.fail({ message: 'Video comment is not a thread.' })
+    return false
+  }
+
+  res.locals.videoCommentThread = videoComment
+  return true
+}
+
+async function doesVideoCommentExist (idArg: number | string, video: MVideoId, res: express.Response) {
+  const id = parseInt(idArg + '', 10)
+  const videoComment = await VideoCommentModel.loadByIdAndPopulateVideoAndAccountAndReply(id)
+
+  if (!videoComment) {
+    res.fail({
+      status: HttpStatusCode.NOT_FOUND_404,
+      message: 'Video comment thread not found'
+    })
+    return false
+  }
+
+  if (videoComment.videoId !== video.id) {
+    res.fail({ message: 'Video comment is not associated to this video.' })
+    return false
+  }
+
+  res.locals.videoCommentFull = videoComment
+  return true
+}
+
+async function doesCommentIdExist (idArg: number | string, res: express.Response) {
+  const id = parseInt(idArg + '', 10)
+  const videoComment = await VideoCommentModel.loadByIdAndPopulateVideoAndAccountAndReply(id)
+
+  if (!videoComment) {
+    res.fail({
+      status: HttpStatusCode.NOT_FOUND_404,
+      message: 'Video comment thread not found'
+    })
+    return false
+  }
+
+  res.locals.videoCommentFull = videoComment
+  return true
+}
+
+export {
+  doesVideoCommentThreadExist,
+  doesVideoCommentExist,
+  doesCommentIdExist
+}
diff --git a/server/middlewares/validators/shared/video-imports.ts b/server/middlewares/validators/shared/video-imports.ts
new file mode 100644
index 000000000..0f984bc17
--- /dev/null
+++ b/server/middlewares/validators/shared/video-imports.ts
@@ -0,0 +1,22 @@
+import * as express from 'express'
+import { VideoImportModel } from '@server/models/video/video-import'
+import { HttpStatusCode } from '@shared/core-utils'
+
+async function doesVideoImportExist (id: number, res: express.Response) {
+  const videoImport = await VideoImportModel.loadAndPopulateVideo(id)
+
+  if (!videoImport) {
+    res.fail({
+      status: HttpStatusCode.NOT_FOUND_404,
+      message: 'Video import not found'
+    })
+    return false
+  }
+
+  res.locals.videoImport = videoImport
+  return true
+}
+
+export {
+  doesVideoImportExist
+}
diff --git a/server/middlewares/validators/shared/video-ownerships.ts b/server/middlewares/validators/shared/video-ownerships.ts
new file mode 100644
index 000000000..fc27006ce
--- /dev/null
+++ b/server/middlewares/validators/shared/video-ownerships.ts
@@ -0,0 +1,24 @@
+import * as express from 'express'
+import { VideoChangeOwnershipModel } from '@server/models/video/video-change-ownership'
+import { HttpStatusCode } from '@shared/core-utils'
+
+async function doesChangeVideoOwnershipExist (idArg: number | string, res: express.Response) {
+  const id = parseInt(idArg + '', 10)
+  const videoChangeOwnership = await VideoChangeOwnershipModel.load(id)
+
+  if (!videoChangeOwnership) {
+    res.fail({
+      status: HttpStatusCode.NOT_FOUND_404,
+      message: 'Video change ownership not found'
+    })
+    return false
+  }
+
+  res.locals.videoChangeOwnership = videoChangeOwnership
+
+  return true
+}
+
+export {
+  doesChangeVideoOwnershipExist
+}
diff --git a/server/middlewares/validators/shared/video-playlists.ts b/server/middlewares/validators/shared/video-playlists.ts
new file mode 100644
index 000000000..d762859a8
--- /dev/null
+++ b/server/middlewares/validators/shared/video-playlists.ts
@@ -0,0 +1,39 @@
+import * as express from 'express'
+import { VideoPlaylistModel } from '@server/models/video/video-playlist'
+import { MVideoPlaylist } from '@server/types/models'
+import { HttpStatusCode } from '@shared/core-utils'
+
+export type VideoPlaylistFetchType = 'summary' | 'all'
+async function doesVideoPlaylistExist (id: number | string, res: express.Response, fetchType: VideoPlaylistFetchType = 'summary') {
+  if (fetchType === 'summary') {
+    const videoPlaylist = await VideoPlaylistModel.loadWithAccountAndChannelSummary(id, undefined)
+    res.locals.videoPlaylistSummary = videoPlaylist
+
+    return handleVideoPlaylist(videoPlaylist, res)
+  }
+
+  const videoPlaylist = await VideoPlaylistModel.loadWithAccountAndChannel(id, undefined)
+  res.locals.videoPlaylistFull = videoPlaylist
+
+  return handleVideoPlaylist(videoPlaylist, res)
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  doesVideoPlaylistExist
+}
+
+// ---------------------------------------------------------------------------
+
+function handleVideoPlaylist (videoPlaylist: MVideoPlaylist, res: express.Response) {
+  if (!videoPlaylist) {
+    res.fail({
+      status: HttpStatusCode.NOT_FOUND_404,
+      message: 'Video playlist not found'
+    })
+    return false
+  }
+
+  return true
+}
diff --git a/server/middlewares/validators/shared/videos.ts b/server/middlewares/validators/shared/videos.ts
new file mode 100644
index 000000000..a6dad4374
--- /dev/null
+++ b/server/middlewares/validators/shared/videos.ts
@@ -0,0 +1,125 @@
+import { Response } from 'express'
+import { fetchVideo, VideoFetchType } from '@server/lib/model-loaders'
+import { VideoChannelModel } from '@server/models/video/video-channel'
+import { VideoFileModel } from '@server/models/video/video-file'
+import {
+  MUser,
+  MUserAccountId,
+  MVideoAccountLight,
+  MVideoFullLight,
+  MVideoIdThumbnail,
+  MVideoImmutable,
+  MVideoThumbnail,
+  MVideoWithRights
+} from '@server/types/models'
+import { HttpStatusCode } from '@shared/core-utils'
+import { UserRight } from '@shared/models'
+
+async function doesVideoExist (id: number | string, res: Response, fetchType: VideoFetchType = 'all') {
+  const userId = res.locals.oauth ? res.locals.oauth.token.User.id : undefined
+
+  const video = await fetchVideo(id, fetchType, userId)
+
+  if (video === null) {
+    res.fail({
+      status: HttpStatusCode.NOT_FOUND_404,
+      message: 'Video not found'
+    })
+    return false
+  }
+
+  switch (fetchType) {
+    case 'all':
+      res.locals.videoAll = video as MVideoFullLight
+      break
+
+    case 'only-immutable-attributes':
+      res.locals.onlyImmutableVideo = video as MVideoImmutable
+      break
+
+    case 'id':
+      res.locals.videoId = video as MVideoIdThumbnail
+      break
+
+    case 'only-video':
+      res.locals.onlyVideo = video as MVideoThumbnail
+      break
+
+    case 'only-video-with-rights':
+      res.locals.onlyVideoWithRights = video as MVideoWithRights
+      break
+  }
+
+  return true
+}
+
+async function doesVideoFileOfVideoExist (id: number, videoIdOrUUID: number | string, res: Response) {
+  if (!await VideoFileModel.doesVideoExistForVideoFile(id, videoIdOrUUID)) {
+    res.fail({
+      status: HttpStatusCode.NOT_FOUND_404,
+      message: 'VideoFile matching Video not found'
+    })
+    return false
+  }
+
+  return true
+}
+
+async function doesVideoChannelOfAccountExist (channelId: number, user: MUserAccountId, res: Response) {
+  const videoChannel = await VideoChannelModel.loadAndPopulateAccount(channelId)
+
+  if (videoChannel === null) {
+    res.fail({ message: 'Unknown video "video channel" for this instance.' })
+    return false
+  }
+
+  // Don't check account id if the user can update any video
+  if (user.hasRight(UserRight.UPDATE_ANY_VIDEO) === true) {
+    res.locals.videoChannel = videoChannel
+    return true
+  }
+
+  if (videoChannel.Account.id !== user.Account.id) {
+    res.fail({
+      message: 'Unknown video "video channel" for this account.'
+    })
+    return false
+  }
+
+  res.locals.videoChannel = videoChannel
+  return true
+}
+
+function checkUserCanManageVideo (user: MUser, video: MVideoAccountLight, right: UserRight, res: Response, onlyOwned = true) {
+  // Retrieve the user who did the request
+  if (onlyOwned && video.isOwned() === false) {
+    res.fail({
+      status: HttpStatusCode.FORBIDDEN_403,
+      message: 'Cannot manage a video of another server.'
+    })
+    return false
+  }
+
+  // Check if the user can delete the video
+  // The user can delete it if he has the right
+  // Or if s/he is the video's account
+  const account = video.VideoChannel.Account
+  if (user.hasRight(right) === false && account.userId !== user.id) {
+    res.fail({
+      status: HttpStatusCode.FORBIDDEN_403,
+      message: 'Cannot manage a video of another user.'
+    })
+    return false
+  }
+
+  return true
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  doesVideoChannelOfAccountExist,
+  doesVideoExist,
+  doesVideoFileOfVideoExist,
+  checkUserCanManageVideo
+}