mirror of
https://github.com/BobbyWibowo/lolisafe.git
synced 2024-12-13 07:56:23 +00:00
765 lines
23 KiB
JavaScript
765 lines
23 KiB
JavaScript
const { promisify } = require('util')
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const AbortController = require('abort-controller')
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const fastq = require('fastq')
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const fetch = require('node-fetch')
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const ffmpeg = require('fluent-ffmpeg')
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const jetpack = require('fs-jetpack')
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const knex = require('knex')
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const MarkdownIt = require('markdown-it')
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const path = require('path')
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const sharp = require('sharp')
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const paths = require('./pathsController')
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const perms = require('./permissionController')
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const ClientError = require('./utils/ClientError')
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const Constants = require('./utils/Constants')
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const ServerError = require('./utils/ServerError')
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const SimpleDataStore = require('./utils/SimpleDataStore')
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const StatsManager = require('./utils/StatsManager')
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const config = require('./utils/ConfigManager')
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const logger = require('./../logger')
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const devmode = process.env.NODE_ENV === 'development'
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const self = {
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devmode,
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inspect: devmode && require('util').inspect,
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db: knex(config.database),
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md: {
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instance: new MarkdownIt({
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// https://markdown-it.github.io/markdown-it/#MarkdownIt.new
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html: false,
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breaks: true,
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linkify: true
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}),
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defaultRenderers: {}
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},
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gitHash: null,
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idMaxTries: config.uploads.maxTries || 1,
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stripTagsBlacklistedExts: Array.isArray(config.uploads.stripTags.blacklistExtensions)
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? config.uploads.stripTags.blacklistExtensions
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: [],
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thumbsSize: config.uploads.generateThumbs.size || 200,
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ffprobe: promisify(ffmpeg.ffprobe),
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timezoneOffset: new Date().getTimezoneOffset(),
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retentions: {
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enabled: false,
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periods: {},
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default: {}
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},
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albumRenderStore: new SimpleDataStore({
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limit: 10,
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strategy: SimpleDataStore.STRATEGIES[0]
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}),
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contentDispositionStore: null
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}
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// Remember old renderer, if overridden, or proxy to default renderer
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self.md.defaultRenderers.link_open = self.md.instance.renderer.rules.link_open || function (tokens, idx, options, env, that) {
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return that.renderToken(tokens, idx, options)
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}
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// Add target="_blank" to URLs if applicable
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self.md.instance.renderer.rules.link_open = function (tokens, idx, options, env, that) {
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const aIndex = tokens[idx].attrIndex('target')
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if (aIndex < 0) {
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tokens[idx].attrPush(['target', '_blank'])
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} else {
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tokens[idx].attrs[aIndex][1] = '_blank'
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}
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return self.md.defaultRenderers.link_open(tokens, idx, options, env, that)
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}
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if (typeof config.uploads.retentionPeriods === 'object' &&
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Object.keys(config.uploads.retentionPeriods).length) {
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// Build a temporary index of group values
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const _retentionPeriods = Object.assign({}, config.uploads.retentionPeriods)
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const _groups = { _: -1 }
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Object.assign(_groups, perms.permissions)
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// Sanitize config values
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const names = Object.keys(_groups)
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for (const name of names) {
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if (Array.isArray(_retentionPeriods[name]) && _retentionPeriods[name].length) {
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_retentionPeriods[name] = _retentionPeriods[name]
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.filter((v, i, a) => (Number.isFinite(v) && v >= 0) || v === null)
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} else {
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_retentionPeriods[name] = []
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}
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}
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if (!_retentionPeriods._.length && !config.private) {
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logger.error('Guests\' retention periods are missing, yet this installation is not set to private.')
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process.exit(1)
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}
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// Create sorted array of group names based on their values
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const _sorted = Object.keys(_groups)
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.sort((a, b) => _groups[a] - _groups[b])
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// Build retention periods array for each groups
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for (let i = 0; i < _sorted.length; i++) {
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const current = _sorted[i]
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const _periods = [..._retentionPeriods[current]]
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self.retentions.default[current] = _periods.length ? _periods[0] : null
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if (i > 0) {
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// Inherit retention periods of lower-valued groups
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for (let j = i - 1; j >= 0; j--) {
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const lower = _sorted[j]
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if (_groups[lower] < _groups[current]) {
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_periods.unshift(..._retentionPeriods[lower])
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if (self.retentions.default[current] === null) {
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self.retentions.default[current] = self.retentions.default[lower]
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}
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}
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}
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}
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self.retentions.periods[current] = _periods
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.filter((v, i, a) => v !== null && a.indexOf(v) === i) // re-sanitize & uniquify
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.sort((a, b) => a - b) // sort from lowest to highest (zero/permanent will always be first)
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// Mark the feature as enabled, if at least one group was configured
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if (self.retentions.periods[current].length) {
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self.retentions.enabled = true
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}
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}
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} else if (Array.isArray(config.uploads.temporaryUploadAges) && config.uploads.temporaryUploadAges.length) {
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self.retentions.periods._ = config.uploads.temporaryUploadAges
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.filter((v, i, a) => Number.isFinite(v) && v >= 0)
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self.retentions.default._ = self.retentions.periods._[0]
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for (const name of Object.keys(perms.permissions)) {
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self.retentions.periods[name] = self.retentions.periods._
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self.retentions.default[name] = self.retentions.default._
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}
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self.retentions.enabled = true
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}
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// This helper function initiates fetch() with AbortController
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// signal controller to handle per-instance global timeout.
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// node-fetch's built-in timeout option resets on every redirect,
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// and thus not reliable in certain cases.
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self.fetch = (url, options = {}) => {
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if (options.timeout === undefined) {
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return fetch(url, options)
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}
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// Init AbortController
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const abortController = new AbortController()
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const timeout = setTimeout(() => {
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abortController.abort()
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}, options.timeout)
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// Clean up options object
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options.signal = abortController.signal
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delete options.timeout
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// Return instance with an attached Promise.finally() handler to clear timeout
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return fetch(url, options)
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.finally(() => {
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clearTimeout(timeout)
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})
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}
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const cloudflareAuth = config.cloudflare && config.cloudflare.zoneId &&
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(config.cloudflare.apiToken || config.cloudflare.userServiceKey ||
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(config.cloudflare.apiKey && config.cloudflare.email))
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const cloudflarePurgeCacheQueue = cloudflareAuth && fastq.promise(async chunk => {
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const MAX_TRIES = 3
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const url = `https://api.cloudflare.com/client/v4/zones/${config.cloudflare.zoneId}/purge_cache`
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const result = {
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success: false,
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files: chunk,
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errors: []
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}
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const headers = {
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'Content-Type': 'application/json'
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}
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if (config.cloudflare.apiToken) {
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headers.Authorization = `Bearer ${config.cloudflare.apiToken}`
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} else if (config.cloudflare.userServiceKey) {
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headers['X-Auth-User-Service-Key'] = config.cloudflare.userServiceKey
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} else if (config.cloudflare.apiKey && config.cloudflare.email) {
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headers['X-Auth-Key'] = config.cloudflare.apiKey
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headers['X-Auth-Email'] = config.cloudflare.email
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}
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for (let i = 0; i < MAX_TRIES; i++) {
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const _log = message => {
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let prefix = `[CF]: ${i + 1}/${MAX_TRIES}: ${path.basename(chunk[0])}`
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if (chunk.length > 1) prefix += ',\u2026'
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logger.log(`${prefix}: ${message}`)
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}
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const response = await fetch(url, {
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method: 'POST',
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body: JSON.stringify({ files: chunk }),
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headers
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})
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.then(res => res.json())
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.catch(error => error)
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// If fetch errors out, instead of API responding with API errors
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if (response instanceof Error) {
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const errorString = response.toString()
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if (i < MAX_TRIES - 1) {
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_log(`${errorString}. Retrying in 5 seconds\u2026`)
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await new Promise(resolve => setTimeout(resolve, 5000))
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continue
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}
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result.errors = [errorString]
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break
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}
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// If API reponds with API errors
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const hasErrorsArray = Array.isArray(response.errors) && response.errors.length
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if (hasErrorsArray) {
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const rateLimit = response.errors.find(error => /rate limit/i.test(error.message))
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if (rateLimit && i < MAX_TRIES - 1) {
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_log(`${rateLimit.code}: ${rateLimit.message}. Retrying in a minute\u2026`)
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await new Promise(resolve => setTimeout(resolve, 60000))
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continue
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}
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}
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// If succeeds or out of retries
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result.success = response.success
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result.errors = hasErrorsArray
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? response.errors.map(error => `${error.code}: ${error.message}`)
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: []
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break
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}
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return result
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}, 1) // concurrency: 1
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self.mayGenerateThumb = extname => {
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extname = extname.toLowerCase()
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return (config.uploads.generateThumbs.image && Constants.IMAGE_EXTS.includes(extname)) ||
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(config.uploads.generateThumbs.video && Constants.VIDEO_EXTS.includes(extname))
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}
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// Expand if necessary (should be case-insensitive)
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const extPreserves = [
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/\.tar\.\w+/i // tarballs
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]
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self.extname = (filename, lower) => {
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// Always return blank string if the filename does not seem to have a valid extension
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// Files such as .DS_Store (anything that starts with a dot, without any extension after) will still be accepted
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if (!/\../.test(filename)) return ''
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let multi = ''
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let extname = ''
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// check for multi-archive extensions (.001, .002, and so on)
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if (/\.\d{3}$/.test(filename)) {
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multi = filename.slice(filename.lastIndexOf('.') - filename.length)
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filename = filename.slice(0, filename.lastIndexOf('.'))
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}
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// check against extensions that must be preserved
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for (const extPreserve of extPreserves) {
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const match = filename.match(extPreserve)
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if (match && match[0]) {
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extname = match[0]
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break
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}
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}
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if (!extname) {
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extname = filename.slice(filename.lastIndexOf('.') - filename.length)
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}
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const str = extname + multi
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return lower ? str.toLowerCase() : str
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}
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self.escape = string => {
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// MIT License
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// Copyright(c) 2012-2013 TJ Holowaychuk
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// Copyright(c) 2015 Andreas Lubbe
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// Copyright(c) 2015 Tiancheng "Timothy" Gu
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if (!string) return string
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const str = String(string)
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const match = /["'&<>]/.exec(str)
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if (!match) return str
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let escape
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let html = ''
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let index = 0
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let lastIndex = 0
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for (index = match.index; index < str.length; index++) {
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switch (str.charCodeAt(index)) {
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case 34: // "
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escape = '"'
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break
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case 38: // &
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escape = '&'
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break
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case 39: // '
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escape = '''
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break
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case 60: // <
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escape = '<'
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break
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case 62: // >
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escape = '>'
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break
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default:
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continue
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}
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if (lastIndex !== index) {
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html += str.substring(lastIndex, index)
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}
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lastIndex = index + 1
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html += escape
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}
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return lastIndex !== index
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? html + str.substring(lastIndex, index)
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: html
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}
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self.stripIndents = string => {
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if (!string) return string
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const result = string.replace(/^[^\S\n]+/gm, '')
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const match = result.match(/^[^\S\n]*(?=\S)/gm)
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const indent = match && Math.min(...match.map(el => el.length))
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if (indent) {
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const regexp = new RegExp(`^.{${indent}}`, 'gm')
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return result.replace(regexp, '')
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}
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return result
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}
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self.mask = string => {
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if (!string) return string
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const max = Math.min(Math.floor(string.length / 2), 8)
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const fragment = Math.floor(max / 2)
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if (string.length <= fragment) {
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return '*'.repeat(string.length)
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} else {
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return string.substring(0, fragment) +
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'*'.repeat(Math.min(string.length - (fragment * 2), 4)) +
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string.substring(string.length - fragment)
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}
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}
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self.filterUniquifySqlArray = (value, index, array) => {
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return value !== null &&
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value !== undefined &&
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value !== '' &&
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array.indexOf(value) === index
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}
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self.unlistenEmitters = (emitters, eventName, listener) => {
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emitters.forEach(emitter => {
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if (!emitter) return
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emitter.off(eventName, listener)
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})
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}
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self.assertRequestType = (req, type) => {
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if (!req.is(type)) {
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throw new ClientError(`Request Content-Type must be ${type}.`)
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}
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}
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self.assertJSON = async (req, res) => {
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// Assert Request Content-Type
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self.assertRequestType(req, 'application/json')
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// Parse JSON payload
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req.body = await req.json()
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}
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self.generateThumbs = async (name, extname, force) => {
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extname = extname.toLowerCase()
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const thumbname = path.join(paths.thumbs, name.slice(0, -extname.length) + '.png')
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try {
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// Check if thumbnail already exists
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const stat = await jetpack.inspectAsync(thumbname)
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if (stat) {
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if (stat.type === 'symlink') {
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// Unlink if symlink (should be symlink to the placeholder)
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await jetpack.removeAsync(thumbname)
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} else if (!force) {
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// Continue only if it does not exist, unless forced to
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return true
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}
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}
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// Full path to input file
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const input = path.join(paths.uploads, name)
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// If image extension
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if (Constants.IMAGE_EXTS.includes(extname)) {
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const resizeOptions = {
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width: self.thumbsSize,
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height: self.thumbsSize,
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fit: 'contain',
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background: {
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r: 0,
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g: 0,
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b: 0,
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alpha: 0
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}
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}
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const image = sharp(input)
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const metadata = await image.metadata()
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if (metadata.width > resizeOptions.width || metadata.height > resizeOptions.height) {
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await image
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.resize(resizeOptions)
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.toFile(thumbname)
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} else if (metadata.width === resizeOptions.width && metadata.height === resizeOptions.height) {
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await image
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.toFile(thumbname)
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} else {
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const x = resizeOptions.width - metadata.width
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const y = resizeOptions.height - metadata.height
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await image
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.extend({
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top: Math.floor(y / 2),
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bottom: Math.ceil(y / 2),
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left: Math.floor(x / 2),
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right: Math.ceil(x / 2),
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background: resizeOptions.background
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})
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.toFile(thumbname)
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}
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} else if (Constants.VIDEO_EXTS.includes(extname)) {
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const metadata = await self.ffprobe(input)
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const duration = parseInt(metadata.format.duration)
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if (isNaN(duration)) {
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throw new Error('File does not have valid duration metadata')
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}
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const videoStream = metadata.streams && metadata.streams.find(s => s.codec_type === 'video')
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if (!videoStream || !videoStream.width || !videoStream.height) {
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throw new Error('File does not have valid video stream metadata')
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}
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await new Promise((resolve, reject) => {
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ffmpeg(input)
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.on('error', error => reject(error))
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.on('end', () => resolve())
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.screenshots({
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folder: paths.thumbs,
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filename: name.slice(0, -extname.length) + '.png',
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timemarks: [
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config.uploads.generateThumbs.videoTimemark || '20%'
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],
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size: videoStream.width >= videoStream.height
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? `${self.thumbsSize}x?`
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: `?x${self.thumbsSize}`
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})
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})
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.catch(error => error) // Error passthrough
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.then(async error => {
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// FFMPEG would just warn instead of exiting with errors when dealing with incomplete files
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// Sometimes FFMPEG would throw errors but actually somehow succeeded in making the thumbnails
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// (this could be a fallback mechanism of fluent-ffmpeg library instead)
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// So instead we check if the thumbnail exists to really make sure
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if (await jetpack.existsAsync(thumbname)) {
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return true
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} else {
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throw error || new Error('FFMPEG exited with empty output file')
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}
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})
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} else {
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return false
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}
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} catch (error) {
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logger.error(`[${name}]: generateThumbs(): ${error.toString().trim()}`)
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await jetpack.removeAsync(thumbname) // try to unlink incomplete thumbs first
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try {
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await jetpack.symlinkAsync(paths.thumbPlaceholder, thumbname)
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return true
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} catch (err) {
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logger.error(`[${name}]: generateThumbs(): ${err.toString().trim()}`)
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return false
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}
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}
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return true
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}
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self.stripTags = async (name, extname) => {
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extname = extname.toLowerCase()
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if (self.stripTagsBlacklistedExts.includes(extname)) return false
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const fullPath = path.join(paths.uploads, name)
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let tmpPath
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let isError
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try {
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if (Constants.IMAGE_EXTS.includes(extname)) {
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const tmpName = `tmp-${name}`
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tmpPath = path.join(paths.uploads, tmpName)
|
|
await jetpack.renameAsync(fullPath, tmpName)
|
|
await sharp(tmpPath)
|
|
.toFile(fullPath)
|
|
} else if (config.uploads.stripTags.video && Constants.VIDEO_EXTS.includes(extname)) {
|
|
const tmpName = `tmp-${name}`
|
|
tmpPath = path.join(paths.uploads, tmpName)
|
|
await jetpack.renameAsync(fullPath, tmpName)
|
|
await new Promise((resolve, reject) => {
|
|
ffmpeg(tmpPath)
|
|
.output(fullPath)
|
|
.outputOptions([
|
|
// Experimental.
|
|
'-c copy',
|
|
'-map_metadata:g -1:g',
|
|
'-map_metadata:s:v -1:g',
|
|
'-map_metadata:s:a -1:g'
|
|
])
|
|
.on('error', error => reject(error))
|
|
.on('end', () => resolve(true))
|
|
.run()
|
|
})
|
|
} else {
|
|
return false
|
|
}
|
|
} catch (error) {
|
|
logger.error(`[${name}]: stripTags(): ${error.toString().trim()}`)
|
|
isError = true
|
|
}
|
|
|
|
if (tmpPath) {
|
|
await jetpack.removeAsync(tmpPath)
|
|
}
|
|
|
|
if (isError) {
|
|
throw new ServerError('An error occurred while stripping tags. The format may not be supported.')
|
|
}
|
|
|
|
return jetpack.inspectAsync(fullPath)
|
|
}
|
|
|
|
self.unlinkFile = async (filename, predb) => {
|
|
await jetpack.removeAsync(path.join(paths.uploads, filename))
|
|
|
|
const identifier = filename.split('.')[0]
|
|
const extname = self.extname(filename, true)
|
|
|
|
if (Constants.IMAGE_EXTS.includes(extname) || Constants.VIDEO_EXTS.includes(extname)) {
|
|
await jetpack.removeAsync(path.join(paths.thumbs, `${identifier}.png`))
|
|
}
|
|
}
|
|
|
|
self.bulkDeleteFromDb = async (field, values, user) => {
|
|
// Always return an empty array on failure
|
|
if (!user || !['id', 'name'].includes(field) || !values.length) {
|
|
return []
|
|
}
|
|
|
|
// SQLITE_LIMIT_VARIABLE_NUMBER, which defaults to 999
|
|
// Read more: https://www.sqlite.org/limits.html
|
|
const MAX_VARIABLES_CHUNK_SIZE = 999
|
|
const chunks = []
|
|
while (values.length) {
|
|
chunks.push(values.splice(0, MAX_VARIABLES_CHUNK_SIZE))
|
|
}
|
|
|
|
const failed = []
|
|
const ismoderator = perms.is(user, 'moderator')
|
|
|
|
try {
|
|
const unlinkeds = []
|
|
const albumids = []
|
|
|
|
// NOTE: Not wrapped within a Transaction because
|
|
// we cannot rollback files physically unlinked from the storage
|
|
await Promise.all(chunks.map(async chunk => {
|
|
const files = await self.db.table('files')
|
|
.whereIn(field, chunk)
|
|
.where(function () {
|
|
if (!ismoderator) {
|
|
this.where('userid', user.id)
|
|
}
|
|
})
|
|
|
|
// Push files that could not be found in db
|
|
failed.push(...chunk.filter(value => !files.find(file => file[field] === value)))
|
|
|
|
// Unlink all found files
|
|
const unlinked = []
|
|
|
|
await Promise.all(files.map(async file => {
|
|
try {
|
|
await self.unlinkFile(file.name, true)
|
|
unlinked.push(file)
|
|
} catch (error) {
|
|
logger.error(error)
|
|
failed.push(file[field])
|
|
}
|
|
}))
|
|
|
|
if (!unlinked.length) return
|
|
|
|
// Delete all unlinked files from db
|
|
await self.db.table('files')
|
|
.whereIn('id', unlinked.map(file => file.id))
|
|
.del()
|
|
self.invalidateStatsCache('uploads')
|
|
|
|
unlinked.forEach(file => {
|
|
// Push album ids
|
|
if (file.albumid && !albumids.includes(file.albumid)) {
|
|
albumids.push(file.albumid)
|
|
}
|
|
// Delete from Content-Disposition store if used
|
|
if (self.contentDispositionStore) {
|
|
self.contentDispositionStore.delete(file.name)
|
|
}
|
|
})
|
|
|
|
// Push unlinked files
|
|
unlinkeds.push(...unlinked)
|
|
}))
|
|
|
|
if (unlinkeds.length) {
|
|
// Update albums if necessary, but do not wait
|
|
if (albumids.length) {
|
|
self.db.table('albums')
|
|
.whereIn('id', albumids)
|
|
.update('editedAt', Math.floor(Date.now() / 1000))
|
|
.catch(logger.error)
|
|
self.deleteStoredAlbumRenders(albumids)
|
|
}
|
|
|
|
// Purge Cloudflare's cache if necessary, but do not wait
|
|
if (config.cloudflare.purgeCache) {
|
|
self.purgeCloudflareCache(unlinkeds.map(file => file.name), true, true)
|
|
.then(results => {
|
|
for (const result of results) {
|
|
if (result.errors.length) {
|
|
result.errors.forEach(error => logger.error(`[CF]: ${error}`))
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
} catch (error) {
|
|
logger.error(error)
|
|
}
|
|
|
|
return failed
|
|
}
|
|
|
|
self.purgeCloudflareCache = async (names, uploads, thumbs) => {
|
|
const errors = []
|
|
if (!cloudflareAuth) {
|
|
errors.push('Cloudflare auth is incomplete or missing')
|
|
}
|
|
if (!Array.isArray(names) || !names.length) {
|
|
errors.push('Names array is invalid or empty')
|
|
}
|
|
if (errors.length) {
|
|
return [{ success: false, files: [], errors }]
|
|
}
|
|
|
|
let domain = config.domain
|
|
if (!uploads) domain = config.homeDomain
|
|
|
|
const thumbNames = []
|
|
names = names.map(name => {
|
|
if (uploads) {
|
|
const url = `${domain}/${name}`
|
|
const extname = self.extname(name)
|
|
if (thumbs && self.mayGenerateThumb(extname)) {
|
|
thumbNames.push(`${domain}/thumbs/${name.slice(0, -extname.length)}.png`)
|
|
}
|
|
return url
|
|
} else {
|
|
return name === 'home' ? domain : `${domain}/${name}`
|
|
}
|
|
})
|
|
names.push(...thumbNames)
|
|
|
|
// Split array into multiple arrays with max length of 30 URLs
|
|
// https://api.cloudflare.com/#zone-purge-files-by-url
|
|
const MAX_LENGTH = 30
|
|
const chunks = []
|
|
while (names.length) {
|
|
chunks.push(names.splice(0, MAX_LENGTH))
|
|
}
|
|
|
|
const results = []
|
|
for (const chunk of chunks) {
|
|
const result = await cloudflarePurgeCacheQueue.push(chunk)
|
|
results.push(result)
|
|
}
|
|
return results
|
|
}
|
|
|
|
self.bulkDeleteExpired = async (dryrun, verbose) => {
|
|
const timestamp = Date.now() / 1000
|
|
const fields = ['id']
|
|
if (verbose) fields.push('name')
|
|
const sudo = { username: 'root' }
|
|
|
|
const result = {}
|
|
result.expired = await self.db.table('files')
|
|
.where('expirydate', '<=', timestamp)
|
|
.select(fields)
|
|
|
|
if (!dryrun) {
|
|
// Make a shallow copy
|
|
const field = fields[0]
|
|
const values = result.expired.slice().map(row => row[field])
|
|
result.failed = await self.bulkDeleteFromDb(field, values, sudo)
|
|
if (verbose && result.failed.length) {
|
|
result.failed = result.failed
|
|
.map(failed => result.expired.find(file => file[fields[0]] === failed))
|
|
}
|
|
}
|
|
return result
|
|
}
|
|
|
|
self.deleteStoredAlbumRenders = albumids => {
|
|
for (const albumid of albumids) {
|
|
self.albumRenderStore.delete(`${albumid}`)
|
|
self.albumRenderStore.delete(`${albumid}-nojs`)
|
|
}
|
|
}
|
|
|
|
/** Statistics API **/
|
|
|
|
self.invalidateStatsCache = StatsManager.invalidateStatsCache
|
|
|
|
self.stats = async (req, res) => {
|
|
const isadmin = perms.is(req.locals.user, 'admin')
|
|
if (!isadmin) {
|
|
return res.status(403).end()
|
|
}
|
|
|
|
const hrstart = process.hrtime()
|
|
|
|
const stats = await StatsManager.generateStats(self.db)
|
|
|
|
return res.json({ success: true, stats, hrtime: process.hrtime(hrstart) })
|
|
}
|
|
|
|
module.exports = self
|