BetterDiscordApp-rauenzi/injector/src/modules/csp.js

106 lines
3.6 KiB
JavaScript

import electron from "electron";
const whitelist = {
// Discord includes unsafe-inline already
script: [
"https://*.github.io",
"https://cdnjs.cloudflare.com" // Used for Monaco
],
// Discord includes unsafe-inline already
style: [
"https://*.github.io",
"https://cdnjs.cloudflare.com", // Used for Monaco
"https://fonts.googleapis.com",
"https://fonts.cdnfonts.com",
"https://cdn.statically.io",
"https://rawgit.com",
"https://raw.githack.com",
"https://rsms.me",
"https://cdn.jsdelivr.net",
],
// Discord includes fonts.gstatic.com
font: [
"data:",
"https://*.github.io",
"https://cdnjs.cloudflare.com",
"https://fonts.googleapis.com",
"https://raw.githack.com",
"https://cdn.jsdelivr.net",
],
// Discord includes several sources already including imgur and data:
img: [
"https://*.github.io",
"https://ik.imagekit.io",
"https://source.unsplash.com",
"https://raw.githubusercontent.com",
"https://svgur.com",
"https://i.ibb.co",
"https://rawgit.com",
"https://bowmanfox.xyz",
"https://paz.pw",
"https://adx74.fr",
"https://media.tenor.com", // included by discord already
"https://upload.wikimedia.org",
"https://svgrepo.com",
"https://ch3rry.red",
"https://teamcofh.com",
"https://icon-library.net",
"https://images.pexels.com",
"https://user-images.githubusercontent.com",
"https://emoji.gg",
"https://cdn-icons-png.flaticon.com",
],
// Discord does not include this normally
worker: [
"'self'", // To allow Discord's own workers
"data:", // Used for Monaco
],
};
const types = Object.keys(whitelist);
const strings = {};
for (const key of types) strings[key] = whitelist[key].join(" ") + " ";
function addToCSP(csp, type) {
// If it's in the middle of the policy (most common case)
if (csp.includes(`; ${type}-src `)) return csp.replace(`; ${type}-src `, `; ${type}-src ${strings[type]}`);
// If it's the first rule (very uncommon, default-src should be first)
else if (csp.includes(`${type}-src `)) return csp.replace(`${type}-src `, `${type}-src ${strings[type]}`);
// Otherwise, rule doesn't exist, add it to the end
return csp = csp + `; ${type}-src ${strings[type]}; `;
}
export default class {
static remove() {
electron.session.defaultSession.webRequest.onHeadersReceived(function(details, callback) {
const headerKeys = Object.keys(details.responseHeaders);
for (let h = 0; h < headerKeys.length; h++) {
const key = headerKeys[h];
// Because the casing is inconsistent for whatever reason...
if (key.toLowerCase().indexOf("content-security-policy") !== 0) continue;
// Grab current CSP policy and make sure it's Discord's
// since that's the only one we need to modify
let csp = details.responseHeaders[key];
if (Array.isArray(csp)) csp = csp[0];
if (!csp.toLowerCase().includes("discordapp")) continue;
// Iterate over all whitelisted types and update the header
for (let k = 0; k < types.length; k++) csp = addToCSP(csp, types[k]);
details.responseHeaders[key] = [csp];
}
callback({cancel: false, responseHeaders: details.responseHeaders});
});
}
}