mirror of https://github.com/status-im/codimd.git
394 lines
12 KiB
JavaScript
394 lines
12 KiB
JavaScript
'use strict'
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// response
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// external modules
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const request = require('request')
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// core
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const config = require('./config')
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const logger = require('./logger')
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const models = require('./models')
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const utils = require('./utils')
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const history = require('./history')
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// public
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exports.responseError = responseError
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exports.errorForbidden = errorForbidden
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exports.errorNotFound = errorNotFound
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exports.errorBadRequest = errorBadRequest
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exports.errorTooLong = errorTooLong
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exports.errorInternalError = errorInternalError
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exports.errorServiceUnavailable = errorServiceUnavailable
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exports.newNote = newNote
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exports.showPublishSlide = showPublishSlide
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exports.publishNoteActions = publishNoteActions
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exports.publishSlideActions = publishSlideActions
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exports.githubActions = githubActions
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exports.gitlabActions = gitlabActions
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exports.checkViewPermission = checkViewPermission
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exports.newCheckViewPermission = newCheckViewPermission
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exports.responseCodiMD = responseCodiMD
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function errorForbidden (req, res) {
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if (req.user) {
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responseError(res, '403', 'Forbidden', 'oh no.')
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} else {
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var nextURL = new URL('', config.serverURL)
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nextURL.search = new URLSearchParams({ next: req.originalUrl })
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req.flash('error', 'You are not allowed to access this page. Maybe try logging in?')
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res.redirect(nextURL.toString())
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}
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}
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function errorNotFound (req, res) {
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responseError(res, '404', 'Not Found', 'oops.')
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}
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function errorBadRequest (req, res) {
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responseError(res, '400', 'Bad Request', 'something not right.')
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}
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function errorTooLong (req, res) {
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responseError(res, '413', 'Payload Too Large', 'Shorten your note!')
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}
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function errorInternalError (req, res) {
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responseError(res, '500', 'Internal Error', 'wtf.')
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}
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function errorServiceUnavailable (req, res) {
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res.status(503).send('I\'m busy right now, try again later.')
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}
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function responseError (res, code, detail, msg) {
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res.status(code).render('error.ejs', {
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title: code + ' ' + detail + ' ' + msg,
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code: code,
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detail: detail,
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msg: msg
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})
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}
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function responseCodiMD (res, note) {
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var body = note.content
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var extracted = models.Note.extractMeta(body)
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var meta = models.Note.parseMeta(extracted.meta)
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var title = models.Note.decodeTitle(note.title)
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title = models.Note.generateWebTitle(meta.title || title)
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res.set({
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'Cache-Control': 'private', // only cache by client
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'X-Robots-Tag': 'noindex, nofollow' // prevent crawling
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})
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res.render('codimd.ejs', {
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title: title
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})
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}
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function updateHistory (userId, note, document, time) {
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var noteId = note.alias ? note.alias : models.Note.encodeNoteId(note.id)
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history.updateHistory(userId, noteId, document, time)
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logger.info('history updated')
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}
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function newNote (req, res, next) {
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var owner = null
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var body = ''
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if (req.body && req.body.length > config.documentMaxLength) {
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return errorTooLong(req, res)
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} else if (req.body) {
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body = req.body
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}
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body = body.replace(/[\r]/g, '')
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if (req.isAuthenticated()) {
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owner = req.user.id
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} else if (!config.allowAnonymous) {
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return errorForbidden(req, res)
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}
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models.Note.create({
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ownerId: owner,
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alias: req.alias ? req.alias : null,
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content: body
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}).then(function (note) {
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if (req.isAuthenticated()) {
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updateHistory(owner, note, body)
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}
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return res.redirect(config.serverURL + '/' + models.Note.encodeNoteId(note.id))
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}).catch(function (err) {
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logger.error(err)
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return errorInternalError(req, res)
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})
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}
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function newCheckViewPermission (note, isLogin, userId) {
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if (note.permission === 'private') {
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return note.ownerId === userId
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}
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if (note.permission === 'limited' || note.permission === 'protected') {
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return isLogin
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}
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return true
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}
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function checkViewPermission (req, note) {
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if (note.permission === 'private') {
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if (!req.isAuthenticated() || note.ownerId !== req.user.id) { return false } else { return true }
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} else if (note.permission === 'limited' || note.permission === 'protected') {
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if (!req.isAuthenticated()) { return false } else { return true }
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} else {
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return true
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}
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}
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function findNote (req, res, callback, include) {
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var noteId = req.params.noteId
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var id = req.params.noteId || req.params.shortid
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models.Note.parseNoteId(id, function (err, _id) {
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if (err) {
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logger.error(err)
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return errorInternalError(req, res)
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}
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models.Note.findOne({
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where: {
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id: _id
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},
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include: include || null
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}).then(function (note) {
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if (!note) {
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if (config.allowFreeURL && noteId && !config.forbiddenNoteIDs.includes(noteId)) {
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req.alias = noteId
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return newNote(req, res)
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} else {
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return errorNotFound(req, res)
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}
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}
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if (!checkViewPermission(req, note)) {
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return errorForbidden(req, res)
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} else {
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return callback(note)
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}
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}).catch(function (err) {
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logger.error(err)
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return errorInternalError(req, res)
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})
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})
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}
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function actionDownload (req, res, note) {
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var body = note.content
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var title = models.Note.decodeTitle(note.title)
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var filename = title
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filename = encodeURIComponent(filename)
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res.set({
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'Access-Control-Allow-Origin': '*', // allow CORS as API
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'Access-Control-Allow-Headers': 'Range',
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'Access-Control-Expose-Headers': 'Cache-Control, Content-Encoding, Content-Range',
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'Content-Type': 'text/markdown; charset=UTF-8',
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'Cache-Control': 'private',
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'Content-disposition': 'attachment; filename=' + filename + '.md',
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'X-Robots-Tag': 'noindex, nofollow' // prevent crawling
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})
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res.send(body)
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}
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function publishNoteActions (req, res, next) {
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findNote(req, res, function (note) {
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var action = req.params.action
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switch (action) {
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case 'download':
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actionDownload(req, res, note)
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break
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case 'edit':
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res.redirect(config.serverURL + '/' + (note.alias ? note.alias : models.Note.encodeNoteId(note.id)))
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break
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default:
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res.redirect(config.serverURL + '/s/' + note.shortid)
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break
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}
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})
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}
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function publishSlideActions (req, res, next) {
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findNote(req, res, function (note) {
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var action = req.params.action
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switch (action) {
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case 'edit':
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res.redirect(config.serverURL + '/' + (note.alias ? note.alias : models.Note.encodeNoteId(note.id)))
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break
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default:
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res.redirect(config.serverURL + '/p/' + note.shortid)
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break
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}
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})
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}
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function githubActions (req, res, next) {
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var noteId = req.params.noteId
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findNote(req, res, function (note) {
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var action = req.params.action
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switch (action) {
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case 'gist':
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githubActionGist(req, res, note)
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break
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default:
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res.redirect(config.serverURL + '/' + noteId)
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break
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}
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})
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}
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function githubActionGist (req, res, note) {
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var code = req.query.code
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var state = req.query.state
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if (!code || !state) {
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return errorForbidden(req, res)
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} else {
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var data = {
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client_id: config.github.clientID,
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client_secret: config.github.clientSecret,
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code: code,
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state: state
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}
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var authUrl = 'https://github.com/login/oauth/access_token'
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request({
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url: authUrl,
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method: 'POST',
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json: data
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}, function (error, httpResponse, body) {
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if (!error && httpResponse.statusCode === 200) {
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var accessToken = body.access_token
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if (accessToken) {
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var content = note.content
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var title = models.Note.decodeTitle(note.title)
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var filename = title.replace('/', ' ') + '.md'
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var gist = {
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files: {}
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}
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gist.files[filename] = {
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content: content
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}
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var gistUrl = 'https://api.github.com/gists'
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request({
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url: gistUrl,
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headers: {
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'User-Agent': 'CodiMD',
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Authorization: 'token ' + accessToken
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},
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method: 'POST',
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json: gist
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}, function (error, httpResponse, body) {
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if (!error && httpResponse.statusCode === 201) {
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res.setHeader('referer', '')
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res.redirect(body.html_url)
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} else {
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return errorForbidden(req, res)
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}
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})
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} else {
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return errorForbidden(req, res)
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}
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} else {
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return errorForbidden(req, res)
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}
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})
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}
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}
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function gitlabActions (req, res, next) {
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var noteId = req.params.noteId
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findNote(req, res, function (note) {
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var action = req.params.action
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switch (action) {
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case 'projects':
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gitlabActionProjects(req, res, note)
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break
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default:
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res.redirect(config.serverURL + '/' + noteId)
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break
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}
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})
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}
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function gitlabActionProjects (req, res, note) {
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if (req.isAuthenticated()) {
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models.User.findOne({
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where: {
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id: req.user.id
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}
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}).then(function (user) {
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if (!user) { return errorNotFound(req, res) }
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var ret = { baseURL: config.gitlab.baseURL, version: config.gitlab.version }
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ret.accesstoken = user.accessToken
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ret.profileid = user.profileid
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request(
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config.gitlab.baseURL + '/api/' + config.gitlab.version + '/projects?membership=yes&per_page=100&access_token=' + user.accessToken,
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function (error, httpResponse, body) {
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if (!error && httpResponse.statusCode === 200) {
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ret.projects = JSON.parse(body)
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return res.send(ret)
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} else {
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return res.send(ret)
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}
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}
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)
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}).catch(function (err) {
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logger.error('gitlab action projects failed: ' + err)
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return errorInternalError(req, res)
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})
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} else {
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return errorForbidden(req, res)
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}
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}
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function showPublishSlide (req, res, next) {
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var include = [{
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model: models.User,
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as: 'owner'
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}, {
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model: models.User,
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as: 'lastchangeuser'
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}]
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findNote(req, res, function (note) {
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// force to use short id
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var shortid = req.params.shortid
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if ((note.alias && shortid !== note.alias) || (!note.alias && shortid !== note.shortid)) { return res.redirect(config.serverURL + '/p/' + (note.alias || note.shortid)) }
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note.increment('viewcount').then(function (note) {
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if (!note) {
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return errorNotFound(req, res)
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}
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var body = note.content
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var extracted = models.Note.extractMeta(body)
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var markdown = extracted.markdown
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var meta = models.Note.parseMeta(extracted.meta)
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var createtime = note.createdAt
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var updatetime = note.lastchangeAt
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var title = models.Note.decodeTitle(note.title)
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title = models.Note.generateWebTitle(meta.title || title)
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var data = {
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title: title,
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description: meta.description || (markdown ? models.Note.generateDescription(markdown) : null),
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viewcount: note.viewcount,
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createtime: createtime,
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updatetime: updatetime,
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body: markdown,
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theme: meta.slideOptions && utils.isRevealTheme(meta.slideOptions.theme),
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meta: JSON.stringify(extracted.meta),
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owner: note.owner ? note.owner.id : null,
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ownerprofile: note.owner ? models.User.getProfile(note.owner) : null,
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lastchangeuser: note.lastchangeuser ? note.lastchangeuser.id : null,
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lastchangeuserprofile: note.lastchangeuser ? models.User.getProfile(note.lastchangeuser) : null,
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robots: meta.robots || false, // default allow robots
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GA: meta.GA,
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disqus: meta.disqus,
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cspNonce: res.locals.nonce
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}
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res.set({
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'Cache-Control': 'private' // only cache by client
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})
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res.render('slide.ejs', data)
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}).catch(function (err) {
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logger.error(err)
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return errorInternalError(req, res)
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})
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}, include)
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}
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