611 lines
19 KiB
JavaScript
Executable file
611 lines
19 KiB
JavaScript
Executable file
'use strict'
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// response
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// external modules
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var fs = require('fs')
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var markdownpdf = require('markdown-pdf')
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var LZString = require('lz-string')
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var shortId = require('shortid')
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var querystring = require('querystring')
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var request = require('request')
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var moment = require('moment')
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// core
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var config = require('./config')
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var logger = require('./logger')
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var models = require('./models')
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var utils = require('./utils')
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// public
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var response = {
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errorForbidden: function (res) {
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responseError(res, '403', 'Forbidden', 'oh no.')
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},
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errorNotFound: function (res) {
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responseError(res, '404', 'Not Found', 'oops.')
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},
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errorBadRequest: function (res) {
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responseError(res, '400', 'Bad Request', 'something not right.')
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},
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errorInternalError: function (res) {
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responseError(res, '500', 'Internal Error', 'wtf.')
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},
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errorServiceUnavailable: function (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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newNote: newNote,
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showNote: showNote,
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showPublishNote: showPublishNote,
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showPublishSlide: showPublishSlide,
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showIndex: showIndex,
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noteActions: noteActions,
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publishNoteActions: publishNoteActions,
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publishSlideActions: publishSlideActions,
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githubActions: githubActions,
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gitlabActions: gitlabActions
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}
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function responseError (res, code, detail, msg) {
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res.status(code).render(config.errorpath, {
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url: config.serverurl,
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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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useCDN: config.usecdn
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})
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}
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function showIndex (req, res, next) {
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res.render(config.indexpath, {
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url: config.serverurl,
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useCDN: config.usecdn,
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allowAnonymous: config.allowanonymous,
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facebook: config.isFacebookEnable,
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twitter: config.isTwitterEnable,
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github: config.isGitHubEnable,
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gitlab: config.isGitLabEnable,
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dropbox: config.isDropboxEnable,
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google: config.isGoogleEnable,
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ldap: config.isLDAPEnable,
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email: config.isEmailEnable,
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allowemailregister: config.allowemailregister,
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allowpdfexport: config.allowpdfexport,
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signin: req.isAuthenticated(),
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infoMessage: req.flash('info'),
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errorMessage: req.flash('error')
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})
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}
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function responseHackMD (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(config.hackmdpath, {
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url: config.serverurl,
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title: title,
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useCDN: config.usecdn,
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allowAnonymous: config.allowanonymous,
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facebook: config.isFacebookEnable,
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twitter: config.isTwitterEnable,
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github: config.isGitHubEnable,
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gitlab: config.isGitLabEnable,
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dropbox: config.isDropboxEnable,
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google: config.isGoogleEnable,
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ldap: config.isLDAPEnable,
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email: config.isEmailEnable,
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allowemailregister: config.allowemailregister,
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allowpdfexport: config.allowpdfexport
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})
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}
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function newNote (req, res, next) {
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var owner = null
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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 response.errorForbidden(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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}).then(function (note) {
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return res.redirect(config.serverurl + '/' + LZString.compressToBase64(note.id))
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}).catch(function (err) {
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logger.error(err)
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return response.errorInternalError(res)
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})
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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.log(err)
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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) {
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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 response.errorNotFound(res)
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}
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}
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if (!checkViewPermission(req, note)) {
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return response.errorForbidden(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 response.errorInternalError(res)
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})
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})
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}
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function showNote (req, res, next) {
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findNote(req, res, function (note) {
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// force to use note id
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var noteId = req.params.noteId
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var id = LZString.compressToBase64(note.id)
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if ((note.alias && noteId !== note.alias) || (!note.alias && noteId !== id)) { return res.redirect(config.serverurl + '/' + (note.alias || id)) }
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return responseHackMD(res, note)
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})
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}
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function showPublishNote (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)) {
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return res.redirect(config.serverurl + '/s/' + (note.alias || note.shortid))
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}
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note.increment('viewcount').then(function (note) {
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if (!note) {
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return response.errorNotFound(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 origin = config.serverurl
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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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url: origin,
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body: body,
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useCDN: config.usecdn,
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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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}
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return renderPublish(data, res)
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}).catch(function (err) {
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logger.error(err)
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return response.errorInternalError(res)
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})
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}, include)
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}
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function renderPublish (data, res) {
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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(config.prettypath, data)
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}
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function actionPublish (req, res, note) {
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res.redirect(config.serverurl + '/s/' + (note.alias || note.shortid))
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}
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function actionSlide (req, res, note) {
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res.redirect(config.serverurl + '/p/' + (note.alias || note.shortid))
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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 actionInfo (req, 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 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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var data = {
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title: meta.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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}
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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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'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.send(data)
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}
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function actionPDF (req, 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 title = models.Note.decodeTitle(note.title)
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if (!fs.existsSync(config.tmppath)) {
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fs.mkdirSync(config.tmppath)
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}
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var path = config.tmppath + '/' + Date.now() + '.pdf'
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markdownpdf().from.string(extracted.markdown).to(path, function () {
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var stream = fs.createReadStream(path)
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var filename = title
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// Be careful of special characters
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filename = encodeURIComponent(filename)
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// Ideally this should strip them
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res.setHeader('Content-disposition', 'attachment; filename="' + filename + '.pdf"')
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res.setHeader('Cache-Control', 'private')
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res.setHeader('Content-Type', 'application/pdf; charset=UTF-8')
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res.setHeader('X-Robots-Tag', 'noindex, nofollow') // prevent crawling
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stream.pipe(res)
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fs.unlink(path)
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})
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}
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function actionGist (req, res, note) {
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var data = {
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client_id: config.github.clientID,
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redirect_uri: config.serverurl + '/auth/github/callback/' + LZString.compressToBase64(note.id) + '/gist',
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scope: 'gist',
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state: shortId.generate()
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}
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var query = querystring.stringify(data)
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res.redirect('https://github.com/login/oauth/authorize?' + query)
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}
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function actionRevision (req, res, note) {
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var actionId = req.params.actionId
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if (actionId) {
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var time = moment(parseInt(actionId))
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if (time.isValid()) {
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models.Revision.getPatchedNoteRevisionByTime(note, time, function (err, content) {
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if (err) {
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logger.error(err)
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return response.errorInternalError(res)
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}
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if (!content) {
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return response.errorNotFound(res)
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}
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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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'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.send(content)
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})
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} else {
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return response.errorNotFound(res)
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}
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} else {
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models.Revision.getNoteRevisions(note, function (err, data) {
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if (err) {
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logger.error(err)
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return response.errorInternalError(res)
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}
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var out = {
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revision: data
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}
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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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'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.send(out)
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})
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}
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}
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function noteActions (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 'publish':
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case 'pretty': // pretty deprecated
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actionPublish(req, res, note)
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break
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case 'slide':
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actionSlide(req, res, note)
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break
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case 'download':
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actionDownload(req, res, note)
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break
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case 'info':
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actionInfo(req, res, note)
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break
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case 'pdf':
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if (config.allowpdfexport) {
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actionPDF(req, res, note)
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} else {
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logger.error('PDF export failed: Disabled by config. Set "allowpdfexport: true" to enable. Check the documentation for details')
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response.errorForbidden(res)
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}
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break
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case 'gist':
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actionGist(req, res, note)
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break
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case 'revision':
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actionRevision(req, res, note)
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break
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default:
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return res.redirect(config.serverurl + '/' + noteId)
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}
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})
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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 'edit':
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res.redirect(config.serverurl + '/' + (note.alias ? note.alias : LZString.compressToBase64(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 : LZString.compressToBase64(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 response.errorForbidden(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': 'HackMD',
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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 response.errorForbidden(res)
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}
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})
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} else {
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return response.errorForbidden(res)
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}
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} else {
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return response.errorForbidden(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({
|
|
where: {
|
|
id: req.user.id
|
|
}
|
|
}).then(function (user) {
|
|
if (!user) { return response.errorNotFound(res) }
|
|
var ret = { baseURL: config.gitlab.baseURL }
|
|
ret.accesstoken = user.accessToken
|
|
ret.profileid = user.profileid
|
|
request(
|
|
config.gitlab.baseURL + '/api/v3/projects?access_token=' + user.accessToken,
|
|
function (error, httpResponse, body) {
|
|
if (!error && httpResponse.statusCode === 200) {
|
|
ret.projects = JSON.parse(body)
|
|
return res.send(ret)
|
|
} else {
|
|
return res.send(ret)
|
|
}
|
|
}
|
|
)
|
|
}).catch(function (err) {
|
|
logger.error('gitlab action projects failed: ' + err)
|
|
return response.errorInternalError(res)
|
|
})
|
|
} else {
|
|
return response.errorForbidden(res)
|
|
}
|
|
}
|
|
|
|
function showPublishSlide (req, res, next) {
|
|
var include = [{
|
|
model: models.User,
|
|
as: 'owner'
|
|
}, {
|
|
model: models.User,
|
|
as: 'lastchangeuser'
|
|
}]
|
|
findNote(req, res, function (note) {
|
|
// force to use short id
|
|
var shortid = req.params.shortid
|
|
if ((note.alias && shortid !== note.alias) || (!note.alias && shortid !== note.shortid)) { return res.redirect(config.serverurl + '/p/' + (note.alias || note.shortid)) }
|
|
note.increment('viewcount').then(function (note) {
|
|
if (!note) {
|
|
return response.errorNotFound(res)
|
|
}
|
|
var body = note.content
|
|
var extracted = models.Note.extractMeta(body)
|
|
var markdown = extracted.markdown
|
|
var meta = models.Note.parseMeta(extracted.meta)
|
|
var createtime = note.createdAt
|
|
var updatetime = note.lastchangeAt
|
|
var title = models.Note.decodeTitle(note.title)
|
|
title = models.Note.generateWebTitle(meta.title || title)
|
|
var origin = config.serverurl
|
|
var data = {
|
|
title: title,
|
|
description: meta.description || (markdown ? models.Note.generateDescription(markdown) : null),
|
|
viewcount: note.viewcount,
|
|
createtime: createtime,
|
|
updatetime: updatetime,
|
|
url: origin,
|
|
body: markdown,
|
|
theme: meta.slideOptions && utils.isRevealTheme(meta.slideOptions.theme),
|
|
meta: JSON.stringify(extracted.meta),
|
|
useCDN: config.usecdn,
|
|
owner: note.owner ? note.owner.id : null,
|
|
ownerprofile: note.owner ? models.User.getProfile(note.owner) : null,
|
|
lastchangeuser: note.lastchangeuser ? note.lastchangeuser.id : null,
|
|
lastchangeuserprofile: note.lastchangeuser ? models.User.getProfile(note.lastchangeuser) : null,
|
|
robots: meta.robots || false, // default allow robots
|
|
GA: meta.GA,
|
|
disqus: meta.disqus
|
|
}
|
|
return renderPublishSlide(data, res)
|
|
}).catch(function (err) {
|
|
logger.error(err)
|
|
return response.errorInternalError(res)
|
|
})
|
|
}, include)
|
|
}
|
|
|
|
function renderPublishSlide (data, res) {
|
|
res.set({
|
|
'Cache-Control': 'private' // only cache by client
|
|
})
|
|
res.render(config.slidepath, data)
|
|
}
|
|
|
|
module.exports = response
|