anubis/web/static/js/main.mjs.map

{
  "version": 3,
  "sources": ["../../js/proof-of-work.mjs", "../../js/proof-of-work-slow.mjs", "../../js/main.mjs"],
  "sourcesContent": ["export default function process(data, difficulty = 5, threads = (navigator.hardwareConcurrency || 1)) {\n  console.debug(\"fast algo\");\n  return new Promise((resolve, reject) => {\n    let webWorkerURL = URL.createObjectURL(new Blob([\n      '(', processTask(), ')()'\n    ], { type: 'application/javascript' }));\n\n    const workers = [];\n\n    for (let i = 0; i < threads; i++) {\n      let worker = new Worker(webWorkerURL);\n\n      worker.onmessage = (event) => {\n        workers.forEach(worker => worker.terminate());\n        worker.terminate();\n        resolve(event.data);\n      };\n\n      worker.onerror = (event) => {\n        worker.terminate();\n        reject();\n      };\n\n      worker.postMessage({\n        data,\n        difficulty,\n        nonce: i,\n        threads,\n      });\n\n      workers.push(worker);\n    }\n\n    URL.revokeObjectURL(webWorkerURL);\n  });\n}\n\nfunction processTask() {\n  return function () {\n    const sha256 = (text) => {\n      const encoded = new TextEncoder().encode(text);\n      return crypto.subtle.digest(\"SHA-256\", encoded.buffer);\n    };\n\n    function uint8ArrayToHexString(arr) {\n      return Array.from(arr)\n        .map((c) => c.toString(16).padStart(2, \"0\"))\n        .join(\"\");\n    }\n\n    addEventListener('message', async (event) => {\n      let data = event.data.data;\n      let difficulty = event.data.difficulty;\n      let hash;\n      let nonce = event.data.nonce;\n      let threads = event.data.threads;\n\n      while (true) {\n        const currentHash = await sha256(data + nonce);\n        const thisHash = new Uint8Array(currentHash);\n        let valid = true;\n\n        for (let j = 0; j < difficulty; j++) {\n          const byteIndex = Math.floor(j / 2); // which byte we are looking at\n          const nibbleIndex = j % 2; // which nibble in the byte we are looking at (0 is high, 1 is low)\n\n          let nibble = (thisHash[byteIndex] >> (nibbleIndex === 0 ? 4 : 0)) & 0x0F; // Get the nibble\n\n          if (nibble !== 0) {\n            valid = false;\n            break;\n          }\n        }\n\n        if (valid) {\n          hash = uint8ArrayToHexString(thisHash);\n          console.log(hash);\n          break;\n        }\n\n        nonce += threads;\n      }\n\n      postMessage({\n        hash,\n        data,\n        difficulty,\n        nonce,\n      });\n    });\n  }.toString();\n}\n\n", "// https://dev.to/ratmd/simple-proof-of-work-in-javascript-3kgm\n\nexport default function process(data, difficulty = 5, _threads = 1) {\n  console.debug(\"slow algo\");\n  return new Promise((resolve, reject) => {\n    let webWorkerURL = URL.createObjectURL(new Blob([\n      '(', processTask(), ')()'\n    ], { type: 'application/javascript' }));\n\n    let worker = new Worker(webWorkerURL);\n\n    worker.onmessage = (event) => {\n      worker.terminate();\n      resolve(event.data);\n    };\n\n    worker.onerror = (event) => {\n      worker.terminate();\n      reject();\n    };\n\n    worker.postMessage({\n      data,\n      difficulty\n    });\n\n    URL.revokeObjectURL(webWorkerURL);\n  });\n}\n\nfunction processTask() {\n  return function () {\n    const sha256 = (text) => {\n      const encoded = new TextEncoder().encode(text);\n      return crypto.subtle.digest(\"SHA-256\", encoded.buffer)\n        .then((result) =>\n          Array.from(new Uint8Array(result))\n            .map((c) => c.toString(16).padStart(2, \"0\"))\n            .join(\"\"),\n        );\n    };\n\n    addEventListener('message', async (event) => {\n      let data = event.data.data;\n      let difficulty = event.data.difficulty;\n\n      let hash;\n      let nonce = 0;\n      do {\n        hash = await sha256(data + nonce++);\n      } while (hash.substring(0, difficulty) !== Array(difficulty + 1).join('0'));\n\n      nonce -= 1; // last nonce was post-incremented\n\n      postMessage({\n        hash,\n        data,\n        difficulty,\n        nonce,\n      });\n    });\n  }.toString();\n}", "import processFast from \"./proof-of-work.mjs\";\nimport processSlow from \"./proof-of-work-slow.mjs\";\nimport { testVideo } from \"./video.mjs\";\n\nconst algorithms = {\n  \"fast\": processFast,\n  \"slow\": processSlow,\n}\n\n// from Xeact\nconst u = (url = \"\", params = {}) => {\n  let result = new URL(url, window.location.href);\n  Object.entries(params).forEach((kv) => {\n    let [k, v] = kv;\n    result.searchParams.set(k, v);\n  });\n  return result.toString();\n};\n\nconst imageURL = (mood, cacheBuster) =>\n  u(`/.within.website/x/cmd/anubis/static/img/${mood}.webp`, { cacheBuster });\n\n(async () => {\n  const status = document.getElementById('status');\n  const image = document.getElementById('image');\n  const title = document.getElementById('title');\n  const spinner = document.getElementById('spinner');\n  const anubisVersion = JSON.parse(document.getElementById('anubis_version').textContent);\n\n  // const testarea = document.getElementById('testarea');\n\n  // const videoWorks = await testVideo(testarea);\n  // console.log(`videoWorks: ${videoWorks}`);\n\n  // if (!videoWorks) {\n  //   title.innerHTML = \"Oh no!\";\n  //   status.innerHTML = \"Checks failed. Please check your browser's settings and try again.\";\n  //   image.src = imageURL(\"sad\");\n  //   spinner.innerHTML = \"\";\n  //   spinner.style.display = \"none\";\n  //   return;\n  // }\n\n  status.innerHTML = 'Calculating...';\n\n  const { challenge, rules } = await fetch(\"/.within.website/x/cmd/anubis/api/make-challenge\", { method: \"POST\" })\n    .then(r => {\n      if (!r.ok) {\n        throw new Error(\"Failed to fetch config\");\n      }\n      return r.json();\n    })\n    .catch(err => {\n      title.innerHTML = \"Oh no!\";\n      status.innerHTML = `Failed to fetch config: ${err.message}`;\n      image.src = imageURL(\"sad\", anubisVersion);\n      spinner.innerHTML = \"\";\n      spinner.style.display = \"none\";\n      throw err;\n    });\n\n  const process = algorithms[rules.algorithm];\n  if (!process) {\n    title.innerHTML = \"Oh no!\";\n    status.innerHTML = `Failed to resolve check algorithm. You may want to reload the page.`;\n    image.src = imageURL(\"sad\", anubisVersion);\n    spinner.innerHTML = \"\";\n    spinner.style.display = \"none\";\n    return;\n  }\n\n  status.innerHTML = `Calculating...<br/>Difficulty: ${rules.report_as}`;\n\n  const t0 = Date.now();\n  const { hash, nonce } = await process(challenge, rules.difficulty);\n  const t1 = Date.now();\n  console.log({ hash, nonce });\n\n  title.innerHTML = \"Success!\";\n  status.innerHTML = `Done! Took ${t1 - t0}ms, ${nonce} iterations`;\n  image.src = imageURL(\"happy\", anubisVersion);\n  spinner.innerHTML = \"\";\n  spinner.style.display = \"none\";\n\n  setTimeout(() => {\n    const redir = window.location.href;\n    window.location.href = u(\"/.within.website/x/cmd/anubis/api/pass-challenge\", { response: hash, nonce, redir, elapsedTime: t1 - t0 });\n  }, 250);\n})();"],
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}