Firebase Hosting Fetch All Files

README.md

Fetch All Files from Firebase Hosting

This script fetches all of the files from the currently deployed version of a Firebase Hosting site. You must be signed in via the Firebase CLI and have "Site Viewer" permission on the site in question to be able to properly run the script.

Running via NPX

npx https://gist.github.com/mbleigh/9c8680cf319ace2f506f57380da66e7d <site_name>

Where <site_name> is your Firebase Hosting site (e.g. my-site from my-site.firebaseapp.com). The files will be downloaded into a folder <site_name>_<version_id> where the version ID is the current version of your site.

fetchFiles.js

#!/usr/bin/env node

const requireAuth = require('firebase-tools/lib/requireAuth');
const api = require('firebase-tools/lib/api');
const fs = require('fs-extra');
const request = require('request');

if (!process.argv[2]) {
    console.error(`
ERROR: Must supply a site name. Usage:

  node fetchFiles.js <site_name>`);
  process.exit(1);
}

const site = process.argv[2];

async function getLatestVersionName() {
  const result = await api.request('GET', `/v1beta1/sites/${site}/releases?pageSize=1`, {
    auth: true,
    origin: api.hostingApiOrigin,
  });
  const release = (result.body.releases || [])[0];
  if (release) {
    return release.version.name;
  }
  return null;
}

const LIST_PAGE_SIZE = 1000;
async function listFiles(versionName, existing = [], pageToken = null) {
  const result = await api.request('GET', `/v1beta1/${versionName}/files?pageSize=${LIST_PAGE_SIZE}${pageToken ? `&pageToken=${pageToken}` : ''}`, {auth: true, origin: api.hostingApiOrigin});
  result.body.files.forEach(file => existing.push(file.path));
  if (result.body.nextPageToken) {
    return await listFiles(versionName, existing, result.body.nextPageToken);
  }
  return existing;
}

const MAX_FETCHES = 100;

(async function() {
  try {
    await requireAuth({}, ['https://www.googleapis.com/auth/cloud-platform']);
    const v = await getLatestVersionName();
    const vid = v.split('/')[v.split('/').length - 1];
    const toFetch = await listFiles(v);
    const dirName = `${site}_${vid}`;
    let fetchesOutstanding = 0;
    let fetchCount = 0;
    function fetch() {
      if (fetchesOutstanding >= MAX_FETCHES) {
        return;
      } else if (toFetch.length === 0) {
        console.log();
        console.log("Complete. Fetched", fetchCount, "files.");
        return;
      }

      const f = toFetch.shift();
      console.log('Fetching', f);
      fetchesOutstanding++;
      fetchCount++;
      fs.ensureFileSync(dirName + f);
      const q = request(`https://${site}.firebaseapp.com${f}`)
      const ws = fs.createWriteStream(dirName + f);
      q.pipe(ws);
      ws.on('finish', () => {
        console.log('Fetched ', f);
        fetchesOutstanding--;
        fetch();
      });
    }

    fetch();
  } catch (e) {
    console.error("ERROR:", e.stack);
    process.exit(1);
  }
})();

package.json

{
  "name": "firebase-hosting-fetch-version",
  "version": "0.1.0",
  "bin": "./fetchFiles.js",
  "dependencies": {
    "firebase-tools": "^7.4.0",
    "fs-extra": "^8.1.0",
    "request": "^2.88.0"
  }
}

for anyone that runs into a 404, i had to use the project id instead of the name and it worked

I had the 404 issue. I used the project ID instead of the <site_name>, and it resolved the issue.

<project_id>.firebaseapp.com

npx https://gist.github.com/mbleigh/9c8680cf319ace2f506f57380da66e7d <project_id>

I had the 404 issue. I used the project ID instead of the <site_name>, and it resolved the issue.

<project_id>.firebaseapp.com

npx https://gist.github.com/mbleigh/9c8680cf319ace2f506f57380da66e7d <project_id>

Yes, this is the only solution that worked for me. However, is the complete website being pulled down? How can one confirm?

Is there a similar way to retrieve firebase functions ?

Is there a similar way to retrieve firebase functions ?

It looks like for Firebase functions we can get the source code from Google cloud.

• 1. Go to Run cloud : https://console.cloud.google.com/run
• 2. Click on the function you want the source code
     
• 3. Click on the "Source" tab
• 4. Click on "Download Zip"