PeerTube/server/helpers/core-utils.ts

293 lines
8.2 KiB
TypeScript

/* eslint-disable no-useless-call */
/*
Different from 'utils' because we don't import other PeerTube modules.
Useful to avoid circular dependencies.
*/
import { exec, ExecOptions } from 'child_process'
import { BinaryToTextEncoding, createHash, randomBytes } from 'crypto'
import { truncate } from 'lodash'
import { basename, isAbsolute, join, resolve } from 'path'
import * as pem from 'pem'
import { pipeline } from 'stream'
import { URL } from 'url'
import { promisify } from 'util'
const objectConverter = (oldObject: any, keyConverter: (e: string) => string, valueConverter: (e: any) => any) => {
if (!oldObject || typeof oldObject !== 'object') {
return valueConverter(oldObject)
}
if (Array.isArray(oldObject)) {
return oldObject.map(e => objectConverter(e, keyConverter, valueConverter))
}
const newObject = {}
Object.keys(oldObject).forEach(oldKey => {
const newKey = keyConverter(oldKey)
newObject[newKey] = objectConverter(oldObject[oldKey], keyConverter, valueConverter)
})
return newObject
}
const timeTable = {
ms: 1,
second: 1000,
minute: 60000,
hour: 3600000,
day: 3600000 * 24,
week: 3600000 * 24 * 7,
month: 3600000 * 24 * 30
}
export function parseDurationToMs (duration: number | string): number {
if (duration === null) return null
if (typeof duration === 'number') return duration
if (typeof duration === 'string') {
const split = duration.match(/^([\d.,]+)\s?(\w+)$/)
if (split.length === 3) {
const len = parseFloat(split[1])
let unit = split[2].replace(/s$/i, '').toLowerCase()
if (unit === 'm') {
unit = 'ms'
}
return (len || 1) * (timeTable[unit] || 0)
}
}
throw new Error(`Duration ${duration} could not be properly parsed`)
}
export function parseBytes (value: string | number): number {
if (typeof value === 'number') return value
const tgm = /^(\d+)\s*TB\s*(\d+)\s*GB\s*(\d+)\s*MB$/
const tg = /^(\d+)\s*TB\s*(\d+)\s*GB$/
const tm = /^(\d+)\s*TB\s*(\d+)\s*MB$/
const gm = /^(\d+)\s*GB\s*(\d+)\s*MB$/
const t = /^(\d+)\s*TB$/
const g = /^(\d+)\s*GB$/
const m = /^(\d+)\s*MB$/
const b = /^(\d+)\s*B$/
let match
if (value.match(tgm)) {
match = value.match(tgm)
return parseInt(match[1], 10) * 1024 * 1024 * 1024 * 1024 +
parseInt(match[2], 10) * 1024 * 1024 * 1024 +
parseInt(match[3], 10) * 1024 * 1024
} else if (value.match(tg)) {
match = value.match(tg)
return parseInt(match[1], 10) * 1024 * 1024 * 1024 * 1024 +
parseInt(match[2], 10) * 1024 * 1024 * 1024
} else if (value.match(tm)) {
match = value.match(tm)
return parseInt(match[1], 10) * 1024 * 1024 * 1024 * 1024 +
parseInt(match[2], 10) * 1024 * 1024
} else if (value.match(gm)) {
match = value.match(gm)
return parseInt(match[1], 10) * 1024 * 1024 * 1024 +
parseInt(match[2], 10) * 1024 * 1024
} else if (value.match(t)) {
match = value.match(t)
return parseInt(match[1], 10) * 1024 * 1024 * 1024 * 1024
} else if (value.match(g)) {
match = value.match(g)
return parseInt(match[1], 10) * 1024 * 1024 * 1024
} else if (value.match(m)) {
match = value.match(m)
return parseInt(match[1], 10) * 1024 * 1024
} else if (value.match(b)) {
match = value.match(b)
return parseInt(match[1], 10) * 1024
} else {
return parseInt(value, 10)
}
}
function sanitizeUrl (url: string) {
const urlObject = new URL(url)
if (urlObject.protocol === 'https:' && urlObject.port === '443') {
urlObject.port = ''
} else if (urlObject.protocol === 'http:' && urlObject.port === '80') {
urlObject.port = ''
}
return urlObject.href.replace(/\/$/, '')
}
// Don't import remote scheme from constants because we are in core utils
function sanitizeHost (host: string, remoteScheme: string) {
const toRemove = remoteScheme === 'https' ? 443 : 80
return host.replace(new RegExp(`:${toRemove}$`), '')
}
function isTestInstance () {
return process.env.NODE_ENV === 'test'
}
function isProdInstance () {
return process.env.NODE_ENV === 'production'
}
function getAppNumber () {
return process.env.NODE_APP_INSTANCE
}
let rootPath: string
function root () {
if (rootPath) return rootPath
// We are in /helpers/utils.js
rootPath = join(__dirname, '..', '..')
if (basename(rootPath) === 'dist') rootPath = resolve(rootPath, '..')
return rootPath
}
// Thanks: https://stackoverflow.com/a/12034334
function escapeHTML (stringParam) {
if (!stringParam) return ''
const entityMap = {
'&': '&',
'<': '&lt;',
'>': '&gt;',
'"': '&quot;',
'\'': '&#39;',
'/': '&#x2F;',
'`': '&#x60;',
'=': '&#x3D;'
}
return String(stringParam).replace(/[&<>"'`=/]/g, s => entityMap[s])
}
function pageToStartAndCount (page: number, itemsPerPage: number) {
const start = (page - 1) * itemsPerPage
return { start, count: itemsPerPage }
}
function mapToJSON (map: Map<any, any>) {
const obj: any = {}
for (const [ k, v ] of map) {
obj[k] = v
}
return obj
}
function buildPath (path: string) {
if (isAbsolute(path)) return path
return join(root(), path)
}
// Consistent with .length, lodash truncate function is not
function peertubeTruncate (str: string, options: { length: number, separator?: RegExp, omission?: string }) {
const truncatedStr = truncate(str, options)
// The truncated string is okay, we can return it
if (truncatedStr.length <= options.length) return truncatedStr
// Lodash takes into account all UTF characters, whereas String.prototype.length does not: some characters have a length of 2
// We always use the .length so we need to truncate more if needed
options.length -= truncatedStr.length - options.length
return truncate(str, options)
}
function sha256 (str: string | Buffer, encoding: BinaryToTextEncoding = 'hex') {
return createHash('sha256').update(str).digest(encoding)
}
function sha1 (str: string | Buffer, encoding: BinaryToTextEncoding = 'hex') {
return createHash('sha1').update(str).digest(encoding)
}
function execShell (command: string, options?: ExecOptions) {
return new Promise<{ err?: Error, stdout: string, stderr: string }>((res, rej) => {
exec(command, options, (err, stdout, stderr) => {
// eslint-disable-next-line prefer-promise-reject-errors
if (err) return rej({ err, stdout, stderr })
return res({ stdout, stderr })
})
})
}
function promisify0<A> (func: (cb: (err: any, result: A) => void) => void): () => Promise<A> {
return function promisified (): Promise<A> {
return new Promise<A>((resolve: (arg: A) => void, reject: (err: any) => void) => {
func.apply(null, [ (err: any, res: A) => err ? reject(err) : resolve(res) ])
})
}
}
// Thanks to https://gist.github.com/kumasento/617daa7e46f13ecdd9b2
function promisify1<T, A> (func: (arg: T, cb: (err: any, result: A) => void) => void): (arg: T) => Promise<A> {
return function promisified (arg: T): Promise<A> {
return new Promise<A>((resolve: (arg: A) => void, reject: (err: any) => void) => {
func.apply(null, [ arg, (err: any, res: A) => err ? reject(err) : resolve(res) ])
})
}
}
function promisify2<T, U, A> (func: (arg1: T, arg2: U, cb: (err: any, result: A) => void) => void): (arg1: T, arg2: U) => Promise<A> {
return function promisified (arg1: T, arg2: U): Promise<A> {
return new Promise<A>((resolve: (arg: A) => void, reject: (err: any) => void) => {
func.apply(null, [ arg1, arg2, (err: any, res: A) => err ? reject(err) : resolve(res) ])
})
}
}
const randomBytesPromise = promisify1<number, Buffer>(randomBytes)
const createPrivateKey = promisify1<number, { key: string }>(pem.createPrivateKey)
const getPublicKey = promisify1<string, { publicKey: string }>(pem.getPublicKey)
const execPromise2 = promisify2<string, any, string>(exec)
const execPromise = promisify1<string, string>(exec)
const pipelinePromise = promisify(pipeline)
// ---------------------------------------------------------------------------
export {
isTestInstance,
isProdInstance,
getAppNumber,
objectConverter,
root,
escapeHTML,
pageToStartAndCount,
sanitizeUrl,
sanitizeHost,
buildPath,
execShell,
peertubeTruncate,
sha256,
sha1,
mapToJSON,
promisify0,
promisify1,
promisify2,
randomBytesPromise,
createPrivateKey,
getPublicKey,
execPromise2,
execPromise,
pipelinePromise
}