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import express, { RequestHandler } from 'express'
import multer, { diskStorage } from 'multer'
import { getLowercaseExtension } from '@shared/core-utils'
import { HttpStatusCode } from '../../shared/models/http/http-error-codes'
import { CONFIG } from '../initializers/config'
import { REMOTE_SCHEME } from '../initializers/constants'
import { isArray } from './custom-validators/misc'
import { logger } from './logger'
import { deleteFileAndCatch, generateRandomString } from './utils'
import { getExtFromMimetype } from './video'
function buildNSFWFilter (res?: express.Response, paramNSFW?: string) {
if (paramNSFW === 'true') return true
if (paramNSFW === 'false') return false
if (paramNSFW === 'both') return undefined
if (res?.locals.oauth) {
const user = res.locals.oauth.token.User
// User does not want NSFW videos
if (user.nsfwPolicy === 'do_not_list') return false
// Both
return undefined
}
if (CONFIG.INSTANCE.DEFAULT_NSFW_POLICY === 'do_not_list') return false
// Display all
return null
}
function cleanUpReqFiles (req: express.Request) {
const filesObject = req.files
if (!filesObject) return
if (isArray(filesObject)) {
filesObject.forEach(f => deleteFileAndCatch(f.path))
return
}
for (const key of Object.keys(filesObject)) {
const files = filesObject[key]
files.forEach(f => deleteFileAndCatch(f.path))
}
}
function getHostWithPort (host: string) {
const splitted = host.split(':')
// The port was not specified
if (splitted.length === 1) {
if (REMOTE_SCHEME.HTTP === 'https') return host + ':443'
return host + ':80'
}
return host
}
function badRequest (_req: express.Request, res: express.Response) {
return res.type('json')
.status(HttpStatusCode.BAD_REQUEST_400)
.end()
}
function createReqFiles (
fieldNames: string[],
mimeTypes: { [id: string]: string | string[] },
destinations: { [fieldName: string]: string }
): RequestHandler {
const storage = diskStorage({
destination: (req, file, cb) => {
cb(null, destinations[file.fieldname])
},
filename: (req, file, cb) => {
return generateReqFilename(file, mimeTypes, cb)
}
})
const fields: { name: string, maxCount: number }[] = []
for (const fieldName of fieldNames) {
fields.push({
name: fieldName,
maxCount: 1
})
}
return multer({ storage }).fields(fields)
}
function createAnyReqFiles (
mimeTypes: { [id: string]: string | string[] },
destinationDirectory: string,
fileFilter: (req: express.Request, file: Express.Multer.File, cb: (err: Error, result: boolean) => void) => void
): RequestHandler {
const storage = diskStorage({
destination: (req, file, cb) => {
cb(null, destinationDirectory)
},
filename: (req, file, cb) => {
return generateReqFilename(file, mimeTypes, cb)
}
})
return multer({ storage, fileFilter }).any()
}
function isUserAbleToSearchRemoteURI (res: express.Response) {
const user = res.locals.oauth ? res.locals.oauth.token.User : undefined
return CONFIG.SEARCH.REMOTE_URI.ANONYMOUS === true ||
(CONFIG.SEARCH.REMOTE_URI.USERS === true && user !== undefined)
}
function getCountVideos (req: express.Request) {
return req.query.skipCount !== true
}
// ---------------------------------------------------------------------------
export {
buildNSFWFilter,
getHostWithPort,
createAnyReqFiles,
isUserAbleToSearchRemoteURI,
badRequest,
createReqFiles,
cleanUpReqFiles,
getCountVideos
}
// ---------------------------------------------------------------------------
async function generateReqFilename (
file: Express.Multer.File,
mimeTypes: { [id: string]: string | string[] },
cb: (err: Error, name: string) => void
) {
let extension: string
const fileExtension = getLowercaseExtension(file.originalname)
const extensionFromMimetype = getExtFromMimetype(mimeTypes, file.mimetype)
// Take the file extension if we don't understand the mime type
if (!extensionFromMimetype) {
extension = fileExtension
} else {
// Take the first available extension for this mimetype
extension = extensionFromMimetype
}
let randomString = ''
try {
randomString = await generateRandomString(16)
} catch (err) {
logger.error('Cannot generate random string for file name.', { err })
randomString = 'fake-random-string'
}
cb(null, randomString + extension)
}
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