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Move letter-avatars into own request

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To prevent further weakening of our CSP policies, moving the Avatars
into a non-inline version is the way to go.

This implementation probably needs some beautification. But already fixes
the bug.

Signed-off-by: Sheogorath <sheogorath@shivering-isles.com>
This commit is contained in:
Sheogorath 2018-04-12 13:14:42 +02:00
parent f23f403bcb
commit 69aed93282
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GPG key ID: 1F05CC3635CDDFFD
3 changed files with 23 additions and 11 deletions
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17
lib/letter-avatars.js
View file

@ -1,16 +1,17 @@
'use strict'
// external modules
var randomcolor = require('randomcolor')
const randomcolor = require('randomcolor')
const config = require('./config')
// core
module.exports = function (name) {
var color = randomcolor({
exports.generateAvatar = function (name) {
const color = randomcolor({
seed: name,
luminosity: 'dark'
})
var letter = name.substring(0, 1).toUpperCase()
const letter = name.substring(0, 1).toUpperCase()
var svg = '<?xml version="1.0" encoding="UTF-8" standalone="no"?>'
let svg = '<?xml version="1.0" encoding="UTF-8" standalone="no"?>'
svg += '<svg xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns="http://www.w3.org/2000/svg" height="96" width="96" version="1.1" viewBox="0 0 96 96">'
svg += '<g>'
svg += '<rect width="96" height="96" fill="' + color + '" />'
@ -20,5 +21,9 @@ module.exports = function (name) {
svg += '</g>'
svg += '</svg>'
return 'data:image/svg+xml;base64,' + new Buffer(svg).toString('base64')
return svg
}
exports.generateAvatarURL = function (name) {
return config.serverURL + '/user/' + name + '/avatar.svg'
}

10
lib/models/user.js
View file

@ -6,7 +6,7 @@ var scrypt = require('scrypt')
// core
var logger = require('../logger')
var letterAvatars = require('../letter-avatars')
var {generateAvatarURL} = require('../letter-avatars')
module.exports = function (sequelize, DataTypes) {
var User = sequelize.define('User', {
@ -108,7 +108,7 @@ module.exports = function (sequelize, DataTypes) {
if (bigger) photo = photo.replace(/(\?s=)\d*$/i, '$1400')
else photo = photo.replace(/(\?s=)\d*$/i, '$196')
} else {
photo = letterAvatars(profile.username)
photo = generateAvatarURL(profile.username)
}
break
case 'mattermost':
@ -117,7 +117,7 @@ module.exports = function (sequelize, DataTypes) {
if (bigger) photo = photo.replace(/(\?s=)\d*$/i, '$1400')
else photo = photo.replace(/(\?s=)\d*$/i, '$196')
} else {
photo = letterAvatars(profile.username)
photo = generateAvatarURL(profile.username)
}
break
case 'dropbox':
@ -140,7 +140,7 @@ module.exports = function (sequelize, DataTypes) {
if (bigger) photo += '?s=400'
else photo += '?s=96'
} else {
photo = letterAvatars(profile.username)
photo = generateAvatarURL(profile.username)
}
break
case 'saml':
@ -149,7 +149,7 @@ module.exports = function (sequelize, DataTypes) {
if (bigger) photo += '?s=400'
else photo += '?s=96'
} else {
photo = letterAvatars(profile.username)
photo = generateAvatarURL(profile.username)
}
break
}

7
lib/web/userRouter.js
View file

@ -5,6 +5,7 @@ const Router = require('express').Router
const response = require('../response')
const models = require('../models')
const logger = require('../logger')
const {generateAvatar} = require('../letter-avatars')
const UserRouter = module.exports = Router()
@ -34,3 +35,9 @@ UserRouter.get('/me', function (req, res) {
})
}
})
UserRouter.get('/user/:username/avatar.svg', function (req, res, next) {
res.setHeader('Content-Type', 'image/svg+xml')
res.setHeader('Cache-Control', 'public, max-age=86400')
res.send(generateAvatar(req.params.username))
})