d3e509517c
Closes #30 Introduces the "challenge" field in bot rule definitions: ```json { "name": "generic-bot-catchall", "user_agent_regex": "(?i:bot|crawler)", "action": "CHALLENGE", "challenge": { "difficulty": 16, "report_as": 4, "algorithm": "slow" } } ``` This makes Anubis return a challenge page for every user agent with "bot" or "crawler" in it (case-insensitively) with difficulty 16 using the old "slow" algorithm but reporting in the client as difficulty 4. This is useful when you want to make certain clients in particular suffer. Additional validation and testing logic has been added to make sure that users do not define "impossible" challenge settings. If no algorithm is specified, Anubis defaults to the "fast" algorithm. Signed-off-by: Xe Iaso <me@xeiaso.net>
89 lines
No EOL
2.8 KiB
JavaScript
89 lines
No EOL
2.8 KiB
JavaScript
import processFast from "./proof-of-work.mjs";
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import processSlow from "./proof-of-work-slow.mjs";
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import { testVideo } from "./video.mjs";
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const algorithms = {
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"fast": processFast,
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"slow": processSlow,
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}
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// from Xeact
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const u = (url = "", params = {}) => {
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let result = new URL(url, window.location.href);
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Object.entries(params).forEach((kv) => {
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let [k, v] = kv;
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result.searchParams.set(k, v);
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});
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return result.toString();
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};
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const imageURL = (mood, cacheBuster) =>
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u(`/.within.website/x/cmd/anubis/static/img/${mood}.webp`, { cacheBuster });
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(async () => {
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const status = document.getElementById('status');
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const image = document.getElementById('image');
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const title = document.getElementById('title');
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const spinner = document.getElementById('spinner');
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const anubisVersion = JSON.parse(document.getElementById('anubis_version').textContent);
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// const testarea = document.getElementById('testarea');
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// const videoWorks = await testVideo(testarea);
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// console.log(`videoWorks: ${videoWorks}`);
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// if (!videoWorks) {
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// title.innerHTML = "Oh no!";
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// status.innerHTML = "Checks failed. Please check your browser's settings and try again.";
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// image.src = imageURL("sad");
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// spinner.innerHTML = "";
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// spinner.style.display = "none";
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// return;
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// }
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status.innerHTML = 'Calculating...';
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const { challenge, rules } = await fetch("/.within.website/x/cmd/anubis/api/make-challenge", { method: "POST" })
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.then(r => {
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if (!r.ok) {
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throw new Error("Failed to fetch config");
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}
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return r.json();
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})
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.catch(err => {
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title.innerHTML = "Oh no!";
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status.innerHTML = `Failed to fetch config: ${err.message}`;
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image.src = imageURL("sad", anubisVersion);
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spinner.innerHTML = "";
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spinner.style.display = "none";
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throw err;
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});
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const process = algorithms[rules.algorithm];
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if (!process) {
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title.innerHTML = "Oh no!";
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status.innerHTML = `Failed to resolve check algorithm. You may want to reload the page.`;
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image.src = imageURL("sad", anubisVersion);
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spinner.innerHTML = "";
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spinner.style.display = "none";
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return;
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}
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status.innerHTML = `Calculating...<br/>Difficulty: ${rules.report_as}`;
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const t0 = Date.now();
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const { hash, nonce } = await process(challenge, rules.difficulty);
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const t1 = Date.now();
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console.log({ hash, nonce });
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title.innerHTML = "Success!";
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status.innerHTML = `Done! Took ${t1 - t0}ms, ${nonce} iterations`;
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image.src = imageURL("happy", anubisVersion);
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spinner.innerHTML = "";
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spinner.style.display = "none";
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setTimeout(() => {
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const redir = window.location.href;
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window.location.href = u("/.within.website/x/cmd/anubis/api/pass-challenge", { response: hash, nonce, redir, elapsedTime: t1 - t0 });
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}, 250);
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})(); |