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/* eslint-disable @typescript-eslint/no-unsafe-return */
/* eslint-disable @typescript-eslint/explicit-module-boundary-types */
import { hookNative } from "./anti-detection";
import { console, getUnsafeWindow } from "./utils";
const CHUNK_PUSH_FN = /^function [^r]\(\w\){/;
interface Module {
(module, exports, __webpack_require__): void;
}
type WebpackJson = [(number | string)[], { [id: string]: Module }, any[]?][];
const moduleLookup = (id: string, globalWebpackJson: WebpackJson) => {
const pack = globalWebpackJson.find((x) => x[1][id])!;
return pack[1][id];
};
/**
* Retrieve (webpack_require) a module from the page's webpack package
*
* I know this is super hacky.
*/
export const webpackHook = (
moduleId: string,
moduleOverrides: { [id: string]: Module } = {},
globalWebpackJson: WebpackJson = window["webpackJsonpmusescore"]
) => {
const t = Object.assign(
(id: string, override = true) => {
const r: any = {};
const m: Module =
override && moduleOverrides[id]
? moduleOverrides[id]
: moduleLookup(id, globalWebpackJson);
m(r, r, t);
if (r.exports) return r.exports;
return r;
},
{
d(exp, name, fn) {
return (
Object.prototype.hasOwnProperty.call(exp, name) ||
Object.defineProperty(exp, name, {
enumerable: true,
get: fn,
})
);
},
n(e) {
const m = e.__esModule ? () => e.default : () => e;
t.d(m, "a", m);
return m;
},
r(r) {
Object.defineProperty(r, "__esModule", { value: true });
},
e() {
return Promise.resolve();
},
}
);
return t(moduleId);
};
export const ALL = "*";
export const [webpackGlobalOverride, onPackLoad] = (() => {
type OnPackLoadFn = (pack: WebpackJson[0]) => any;
const moduleOverrides: { [id: string]: Module } = {};
const onPackLoadFns: OnPackLoadFn[] = [];
function applyOverride(pack: WebpackJson[0]) {
let entries = Object.entries(moduleOverrides);
// apply to all
const all = moduleOverrides[ALL];
if (all) {
entries = Object.keys(pack[1]).map((id) => [id, all]);
}
entries.forEach(([id, override]) => {
const mod = pack[1][id];
if (mod) {
pack[1][id] = function (n, r, t) {
// make exports configurable
t = Object.assign(t, {
d(exp, name, fn) {
return Object.defineProperty(exp, name, {
enumerable: true,
get: fn,
configurable: true,
});
},
});
mod(n, r, t);
override(n, r, t);
};
}
});
}
// hook `webpackJsonpmusescore.push` as soon as `webpackJsonpmusescore` is available
const _w = getUnsafeWindow();
let jsonp = _w["webpackJsonpmusescore"];
let hooked = false;
Object.defineProperty(_w, "webpackJsonpmusescore", {
get() {
return jsonp;
},
set(v: WebpackJson) {
jsonp = v;
if (!hooked && v.push.toString().match(CHUNK_PUSH_FN)) {
hooked = true;
hookNative(v, "push", (_fn) => {
return function (pack) {
onPackLoadFns.forEach((fn) => fn(pack));
applyOverride(pack);
return _fn.call(this, pack);
};
});
}
},
});
return [
// set overrides
(moduleId: string, override: Module) => {
moduleOverrides[moduleId] = override;
},
// set onPackLoad listeners
(fn: OnPackLoadFn) => {
onPackLoadFns.push(fn);
},
] as const;
})();
export const webpackContext = new Promise<any>((resolve) => {
webpackGlobalOverride(ALL, (n, r, t) => {
resolve(t);
});
});
const PACK_ID_REG = /\+(\{.*?"\})\[\w\]\+/;
export const loadAllPacks = () => {
return webpackContext.then((ctx) => {
try {
const fn = ctx.e.toString();
const packsData = fn.match(PACK_ID_REG)[1] as string;
// eslint-disable-next-line no-new-func, @typescript-eslint/no-implied-eval
const packs = Function(`return (${packsData})`)() as {
[id: string]: string;
};
Object.keys(packs).forEach((id) => {
ctx.e(id);
});
} catch (err) {
console.error(err);
}
});
};
const OBF_FN_REG =
/\w\(".{4}"\),(\w)=(\[".+?\]);\w=\1,\w=(\d+).+?\);var (\w=.+?,\w\})/;
export const OBFUSCATED_REG = /(\w)\((\d+),"(.{4})"\)/g;
export const getObfuscationCtx = (
mod: Module
): ((n: number, s: string) => string) => {
const str = mod.toString();
const m = str.match(OBF_FN_REG);
if (!m) return () => "";
try {
const arrVar = m[1];
const arr = JSON.parse(m[2]);
let n = +m[3] + 1;
for (; --n; ) arr.push(arr.shift());
const fnStr = m[4];
const ctxStr = `var ${arrVar}=${JSON.stringify(arr)};return (${fnStr})`;
// eslint-disable-next-line no-new-func, @typescript-eslint/no-implied-eval
const fn = new Function(ctxStr)();
return fn;
} catch (err) {
console.error(err);
return () => "";
}
};
export default webpackHook;
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