Simple Device Flow Login CLI implementation

README.md

Simple Device Flow Login CLI implementation

run

npx https://gist.github.com/panva/ebaacfe433a8677bdbf458f6e1132045

dcr.mjs

const r = await fetch("https://op.panva.cz/reg", {
  method: "POST",
  headers: {
    "content-type": "application/json",
  },
  body: JSON.stringify({
    grant_types: ["urn:ietf:params:oauth:grant-type:device_code"],
    response_types: [],
    redirect_uris: [],
    token_endpoint_auth_method: "none",
    application_type: "native",
  }),
});

const { client_id } = await r.json();

export { client_id };

index.mjs

#!/usr/bin/env node

import * as client from "openid-client";
import open from "open";
import { client_id } from "./dcr.mjs";

const config = await client.discovery(
  new URL("https://op.panva.cz"),
  client_id,
);

const deviceAuthorizationResponse = await client.initiateDeviceAuthorization(
  config,
  { scope: "openid email" },
);

console.log("user code:", deviceAuthorizationResponse.user_code);

await open(deviceAuthorizationResponse.verification_uri_complete, {
  wait: false,
});

const tokens = await client.pollDeviceAuthorizationGrant(
  config,
  deviceAuthorizationResponse,
);

console.log("got", tokens);
const idTokenClaims = tokens.claims();
if (idTokenClaims) {
  console.log("id token claims", idTokenClaims);

  const userinfo = await client.fetchUserInfo(
    config,
    tokens.access_token,
    idTokenClaims.sub,
  );
  console.log("userinfo", userinfo);
}

package-lock.json

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package.json

{
  "name": "pg",
  "version": "1.0.0",
  "description": "",
  "main": "index.mjs",
  "bin": "./index.mjs",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
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}