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import processFast from "./proof-of-work.mjs";
import processSlow from "./proof-of-work-slow.mjs";
import { testVideo } from "./video.mjs";
const algorithms = {
"fast": processFast,
"slow": processSlow,
};
// from Xeact
const u = (url = "", params = {}) => {
let result = new URL(url, window.location.href);
Object.entries(params).forEach((kv) => {
let [k, v] = kv;
result.searchParams.set(k, v);
});
return result.toString();
};
const imageURL = (mood, cacheBuster) =>
u(`/.within.website/x/cmd/anubis/static/img/${mood}.webp`, { cacheBuster });
const dependencies = [
{
name: "WebCrypto",
msg: "Your browser doesn't have a functioning web.crypto element. Are you viewing this over a secure context?",
value: window.crypto,
},
{
name: "Web Workers",
msg: "Your browser doesn't support web workers (Anubis uses this to avoid freezing your browser). Do you have a plugin like JShelter installed?",
value: window.Worker,
},
];
(async () => {
const status = document.getElementById('status');
const image = document.getElementById('image');
const title = document.getElementById('title');
const spinner = document.getElementById('spinner');
const anubisVersion = JSON.parse(document.getElementById('anubis_version').textContent);
const ohNoes = ({
titleMsg, statusMsg, imageSrc,
}) => {
title.innerHTML = titleMsg;
status.innerHTML = statusMsg;
image.src = imageSrc;
spinner.innerHTML = "";
spinner.style.display = "none";
};
if (!window.isSecureContext) {
ohNoes({
titleMsg: "Your context is not secure!",
statusMsg: `Try connecting over HTTPS or let the admin know to set up HTTPS. For more information, see <a href="https://developer.mozilla.org/en-US/docs/Web/Security/Secure_Contexts#when_is_a_context_considered_secure">MDN</a>.`,
imageSrc: imageURL("sad", anubisVersion),
});
return;
}
// const testarea = document.getElementById('testarea');
// const videoWorks = await testVideo(testarea);
// console.log(`videoWorks: ${videoWorks}`);
// if (!videoWorks) {
// title.innerHTML = "Oh no!";
// status.innerHTML = "Checks failed. Please check your browser's settings and try again.";
// image.src = imageURL("sad");
// spinner.innerHTML = "";
// spinner.style.display = "none";
// return;
// }
status.innerHTML = 'Calculating...';
for (const val of dependencies) {
const { value, name, msg } = val;
if (!value) {
ohNoes({
titleMsg: `Missing feature ${name}`,
statusMsg: msg,
imageSrc: imageURL("sad", anubisVersion),
})
}
}
const { challenge, rules } = await fetch("/.within.website/x/cmd/anubis/api/make-challenge", { method: "POST" })
.then(r => {
if (!r.ok) {
throw new Error("Failed to fetch config");
}
return r.json();
})
.catch(err => {
ohNoes({
titleMsg: "Internal error!",
statusMsg: `Failed to fetch challenge config: ${err.message}`,
imageSrc: imageURL("sad", anubisVersion),
});
throw err;
});
const process = algorithms[rules.algorithm];
if (!process) {
ohNoes({
titleMsg: "Challenge error!",
statusMsg: `Failed to resolve check algorithm. You may want to reload the page.`,
imageSrc: imageURL("sad", anubisVersion),
});
return;
}
status.innerHTML = `Calculating...<br/>Difficulty: ${rules.report_as}`;
spinner.style.display = "block";
try {
const t0 = Date.now();
const { hash, nonce } = await process(challenge, rules.difficulty);
const t1 = Date.now();
console.log({ hash, nonce });
title.innerHTML = "Success!";
status.innerHTML = `Done! Took ${t1 - t0}ms, ${nonce} iterations`;
image.src = imageURL("happy", anubisVersion);
spinner.innerHTML = "";
spinner.style.display = "none";
setTimeout(() => {
const redir = window.location.href;
window.location.replace(
u("/.within.website/x/cmd/anubis/api/pass-challenge", {
response: hash,
nonce,
redir,
elapsedTime: t1 - t0
}),
);
}, 250);
} catch (err) {
ohNoes({
titleMsg: "Calculation error!",
statusMsg: `Failed to calculate challenge: ${err.message}`,
imageSrc: imageURL("sad", anubisVersion),
});
}
})();
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