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Merge pull request #743 from hackmdio/fix-to-use-url-safe-base64

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Fix to use url-safe base64 in note url
This commit is contained in:
Christoph (Sheogorath) Kern 2018-03-18 15:13:06 +01:00 committed by GitHub
commit f6df2deb84
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7 changed files with 101 additions and 10 deletions
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16
lib/history.js
View file

@ -1,6 +1,7 @@
'use strict'
// history
// external modules
var LZString = require('lz-string')
// core
var config = require('./config')
@ -27,7 +28,20 @@ function getHistory (userid, callback) {
}
var history = {}
if (user.history) {
history = parseHistoryToObject(JSON.parse(user.history))
history = JSON.parse(user.history)
// migrate LZString encoded note id to base64url encoded note id
for (let i = 0, l = history.length; i < l; i++) {
try {
let id = LZString.decompressFromBase64(history[i].id)
if (id && models.Note.checkNoteIdValid(id)) {
history[i].id = models.Note.encodeNoteId(id)
}
} catch (err) {
// most error here comes from LZString, ignore
logger.error(err)
}
}
history = parseHistoryToObject(history)
}
if (config.debug) {
logger.info('read history success: ' + user.id)

33
lib/models/note.js
View file

@ -3,6 +3,7 @@
var fs = require('fs')
var path = require('path')
var LZString = require('lz-string')
var base64url = require('base64url')
var md = require('markdown-it')()
var metaMarked = require('meta-marked')
var cheerio = require('cheerio')
@ -114,6 +115,24 @@ module.exports = function (sequelize, DataTypes) {
return false
}
},
encodeNoteId: function (id) {
// remove dashes in UUID and encode in url-safe base64
let str = id.replace(/-/g, '')
let hexStr = Buffer.from(str, 'hex')
return base64url.encode(hexStr)
},
decodeNoteId: function (encodedId) {
// decode from url-safe base64
let id = base64url.toBuffer(encodedId).toString('hex')
// add dashes between the UUID string parts
let idParts = []
idParts.push(id.substr(0, 8))
idParts.push(id.substr(8, 4))
idParts.push(id.substr(12, 4))
idParts.push(id.substr(16, 4))
idParts.push(id.substr(20, 12))
return idParts.join('-')
},
checkNoteIdValid: function (id) {
var uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i
var result = id.match(uuidRegex)
@ -190,13 +209,25 @@ module.exports = function (sequelize, DataTypes) {
return _callback(err, null)
})
},
// parse note id by LZString is deprecated, here for compability
parseNoteIdByLZString: function (_callback) {
// try to parse note id by LZString Base64
try {
var id = LZString.decompressFromBase64(noteId)
if (id && Note.checkNoteIdValid(id)) { return callback(null, id) } else { return _callback(null, null) }
} catch (err) {
return _callback(err, null)
logger.error(err)
return _callback(null, null)
}
},
parseNoteIdByBase64Url: function (_callback) {
// try to parse note id by base64url
try {
var id = Note.decodeNoteId(noteId)
if (id && Note.checkNoteIdValid(id)) { return callback(null, id) } else { return _callback(null, null) }
} catch (err) {
logger.error(err)
return _callback(null, null)
}
},
parseNoteIdByShortId: function (_callback) {

3
lib/realtime.js
View file

@ -5,7 +5,6 @@ var cookie = require('cookie')
var cookieParser = require('cookie-parser')
var url = require('url')
var async = require('async')
var LZString = require('lz-string')
var randomcolor = require('randomcolor')
var Chance = require('chance')
var chance = new Chance()
@ -703,7 +702,7 @@ function operationCallback (socket, operation) {
}
function updateHistory (userId, note, time) {
var noteId = note.alias ? note.alias : LZString.compressToBase64(note.id)
var noteId = note.alias ? note.alias : models.Note.encodeNoteId(note.id)
if (note.server) history.updateHistory(userId, noteId, note.server.document, time)
}

11
lib/response.js
View file

@ -3,7 +3,6 @@
// external modules
var fs = require('fs')
var markdownpdf = require('markdown-pdf')
var LZString = require('lz-string')
var shortId = require('shortid')
var querystring = require('querystring')
var request = require('request')
@ -124,7 +123,7 @@ function newNote (req, res, next) {
alias: req.alias ? req.alias : null,
content: req.body ? req.body : ''
}).then(function (note) {
return res.redirect(config.serverurl + '/' + LZString.compressToBase64(note.id))
return res.redirect(config.serverurl + '/' + models.Note.encodeNoteId(note.id))
}).catch(function (err) {
logger.error(err)
return response.errorInternalError(res)
@ -179,7 +178,7 @@ function showNote (req, res, next) {
findNote(req, res, function (note) {
// force to use note id
var noteId = req.params.noteId
var id = LZString.compressToBase64(note.id)
var id = models.Note.encodeNoteId(note.id)
if ((note.alias && noteId !== note.alias) || (!note.alias && noteId !== id)) { return res.redirect(config.serverurl + '/' + (note.alias || id)) }
return responseHackMD(res, note)
})
@ -321,7 +320,7 @@ function actionPDF (req, res, note) {
function actionGist (req, res, note) {
var data = {
client_id: config.github.clientID,
redirect_uri: config.serverurl + '/auth/github/callback/' + LZString.compressToBase64(note.id) + '/gist',
redirect_uri: config.serverurl + '/auth/github/callback/' + models.Note.encodeNoteId(note.id) + '/gist',
scope: 'gist',
state: shortId.generate()
}
@ -418,7 +417,7 @@ function publishNoteActions (req, res, next) {
var action = req.params.action
switch (action) {
case 'edit':
res.redirect(config.serverurl + '/' + (note.alias ? note.alias : LZString.compressToBase64(note.id)))
res.redirect(config.serverurl + '/' + (note.alias ? note.alias : models.Note.encodeNoteId(note.id)))
break
default:
res.redirect(config.serverurl + '/s/' + note.shortid)
@ -432,7 +431,7 @@ function publishSlideActions (req, res, next) {
var action = req.params.action
switch (action) {
case 'edit':
res.redirect(config.serverurl + '/' + (note.alias ? note.alias : LZString.compressToBase64(note.id)))
res.redirect(config.serverurl + '/' + (note.alias ? note.alias : models.Note.encodeNoteId(note.id)))
break
default:
res.redirect(config.serverurl + '/p/' + note.shortid)

1
package.json
View file

@ -18,6 +18,7 @@
"Idle.Js": "git+https://github.com/shawnmclean/Idle.js",
"async": "^2.1.4",
"aws-sdk": "^2.7.20",
"base64url": "^2.0.0",
"blueimp-md5": "^2.6.0",
"body-parser": "^1.15.2",
"bootstrap": "^3.3.7",

15
public/js/history.js
View file

@ -3,6 +3,12 @@
import store from 'store'
import S from 'string'
import LZString from 'lz-string'
import {
checkNoteIdValid,
encodeNoteId
} from './utils'
import {
checkIfAuth
@ -291,6 +297,15 @@ function parseToHistory (list, notehistory, callback) {
else if (!list || !notehistory) callback(list, notehistory)
else if (notehistory && notehistory.length > 0) {
for (let i = 0; i < notehistory.length; i++) {
// migrate LZString encoded id to base64url encoded id
try {
let id = LZString.decompressFromBase64(notehistory[i].id)
if (id && checkNoteIdValid(id)) {
notehistory[i].id = encodeNoteId(id)
}
} catch (err) {
console.error(err)
}
// parse time to timestamp and fromNow
const timestamp = (typeof notehistory[i].time === 'number' ? moment(notehistory[i].time) : moment(notehistory[i].time, 'MMMM Do YYYY, h:mm:ss a'))
notehistory[i].timestamp = timestamp.valueOf()

32
public/js/utils.js Normal file
View file

@ -0,0 +1,32 @@
import base64url from 'base64url'
let uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i
export function checkNoteIdValid (id) {
let result = id.match(uuidRegex)
if (result && result.length === 1) {
return true
} else {
return false
}
}
export function encodeNoteId (id) {
// remove dashes in UUID and encode in url-safe base64
let str = id.replace(/-/g, '')
let hexStr = Buffer.from(str, 'hex')
return base64url.encode(hexStr)
}
export function decodeNoteId (encodedId) {
// decode from url-safe base64
let id = base64url.toBuffer(encodedId).toString('hex')
// add dashes between the UUID string parts
let idParts = []
idParts.push(id.substr(0, 8))
idParts.push(id.substr(8, 4))
idParts.push(id.substr(12, 4))
idParts.push(id.substr(16, 4))
idParts.push(id.substr(20, 12))
return idParts.join('-')
}