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tobi 2025-04-23 12:17:47 +02:00 • committed by kim
commit db4a6e746c
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web/template/nollamas.tmpl
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@ -1,97 +1,32 @@
<!DOCTYPE html>
<html>
{{- /*
// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
*/ -}}
<head>
<title>Verifying...</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<script>
document.addEventListener('DOMContentLoaded', function() {
const jsOnlyElements = document.querySelectorAll('.hidden');
jsOnlyElements.forEach(el => {
el.classList.remove('hidden');
});
});
// Define our worker task func.
const workerTask = function() {
onmessage = async function(e) {
console.log('worker started');
const challenge = e.data.challenge;
const textEncoder = new TextEncoder();
// Get difficulty and generate the expected
// zero ASCII prefix to check for in hashes.
const difficultyStr = e.data.difficulty;
const difficulty = parseInt(difficultyStr, 10);
const zeroPrefix = '0'.repeat(difficulty);
let nonce = 0;
while (true) {
// Create possible solution string from challenge + nonce.
const solution = textEncoder.encode(challenge + nonce.toString());
// Generate SHA256 hashsum of solution string and hex encode the result.
const hashBuffer = await crypto.subtle.digest('SHA-256', solution);
const hashArray = Array.from(new Uint8Array(hashBuffer));
const hashHex = hashArray.map(b => b.toString(16).padStart(2, '0')).join('');
// Check if the hex encoded hash has
// difficulty defined zeroes prefix.
if (hashHex.startsWith(zeroPrefix)) {
postMessage({ nonce: nonce, done: true });
break;
}
// Iter.
nonce++;
}
}
};
// Convert the worker task function to call-able base64 blob URL.
const workerTaskBlob = new Blob(['(',workerTask.toString(),')()'],
{ type: 'application/javascript' });
const workerTaskURL = URL.createObjectURL(workerTaskBlob);
const challenge = '{{ .challenge }}';
const difficulty = '{{ .difficulty }}';
console.log('challenge:', challenge);
console.log('difficulty:', difficulty);
// Prepare the worker with task function.
const worker = new Worker(workerTaskURL);
worker.postMessage({
challenge: challenge,
difficulty: difficulty,
});
// Set the main worker function.
worker.onmessage = function (e) {
if (e.data.done) {
console.log('solution found for:', e.data.nonce);
let url = new URL(window.location.href);
url.searchParams.append('nollamas_solution', e.data.nonce);
window.location.href = url.toString();
}
};
</script>
<div style="display: flex; align-items: center; justify-content: center; min-width: 100%; min-height: 100%;">
<div style="display: flex; flex-direction: column; align-items: center; justify-content: center; width: 75%; text-align: center;">
<p class="hidden" style="margin-bottom: 0.25rem;"><svg fill="var(--color-1)" style="width: clamp(64px, 15%, 96px); height: auto;" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><style>.spinner_d9Sa{transform-origin:center}.spinner_qQQY{animation:spinner_ZpfF 9s linear infinite}.spinner_pote{animation:spinner_ZpfF .75s linear infinite}@keyframes spinner_ZpfF{100%{transform:rotate(360deg)}}</style><path d="M12,1A11,11,0,1,0,23,12,11,11,0,0,0,12,1Zm0,20a9,9,0,1,1,9-9A9,9,0,0,1,12,21Z"/><rect class="spinner_d9Sa spinner_qQQY" x="11" y="6" rx="1" width="2" height="7"/><rect class="spinner_d9Sa spinner_pote" x="11" y="11" rx="1" width="2" height="9"/></svg></p>
<p class="hidden" style="margin-top: 0.5rem; max-width: 24rem;">One moment while we verify your connection...</p>
<noscript>
<p style="display: flex; align-items: center; gap: 0.5rem;">
<svg width="24px" height="24px" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" stroke="#000000"><g id="SVGRepo_bgCarrier" stroke-width="0"></g><g id="SVGRepo_tracerCarrier" stroke-linecap="round" stroke-linejoin="round"></g><g id="SVGRepo_iconCarrier"><path d="M12 10V13" stroke="#ff7800" stroke-width="2" stroke-linecap="round"></path><path d="M12 16V15.9888" stroke="#ff7800" stroke-width="2" stroke-linecap="round"></path><path d="M10.2518 5.147L3.6508 17.0287C2.91021 18.3618 3.87415 20 5.39912 20H18.6011C20.126 20 21.09 18.3618 20.3494 17.0287L13.7484 5.147C12.9864 3.77538 11.0138 3.77538 10.2518 5.147Z" stroke="#ff7800" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path></g></svg>
Javascript must be enabled to verify your browser.
</p>
</noscript>
</div>
</div>
</body>
</html>
{{- with . }}
<main>
<section class="nollamas"
data-nollamas-challenge="{{ .challenge }}"
data-nollamas-difficulty="{{ .difficulty }}"
>
<p>One moment while we verify your connection...</p>
<noscript>
<p>Javascript must be enabled to verify your browser!</p>
</noscript>
</section>
</main>
{{- end }}