Check RewriteRules - find redirect chains, status codes, final URLs

apacheRedirectCheck.js

// USAGE: node apacheRedirectCheck.js /path/to/file.conf.in https://yourdomain.example
const lineReader = require('line-by-line')
const util = require('util');
const exec = util.promisify(require('child_process').exec);
// get our file
const [ ,, fileName, host ] = process.argv
const lr = new lineReader(fileName)
const results = { success: [], regex: [], failure: []}
// Linereader boilerplate
lr.on('error', console.error)

lr.on('line', async line => {
 	// Hold on, async operations...
	lr.pause()
  
	try{
    	// This is very naive
		const fromURL = line.split('^')[1].split('	')[0].replace('(.*)', '').replace('$', '')
    
    	// Just skip regex'd ones for now
		if (fromURL.includes('(') || fromURL.includes('[') || fromURL.includes('?')) results.regex.push(fromURL)
		else {
			try {
				// I was originally trying to do this all via shell scripts
				// But turns out I'd rather fight JS than sh
				const { stdout,stderr } = await exec(`curl -Ls -o /dev/null -w "End URL: %{url_effective} | Redirects: %{num_redirects} | Status code: %{http_code}" ${host}${fromURL}`)
				
        		results.success.push({fromURL, stdout})
        
				console.log(stdout, stderr)
			} catch(e) {
				console.error(e)
        		// Figure it out later
				results.failure.push(fromURL)
			}
		}
	} catch(outerE) {
	    // Figure it out later
		results.failure.push(line)
	}

	// Next line!
	lr.resume()
});

lr.on('end', function () {
	// All lines are read, write the file
	require('fs').writeFileSync('./results.json', JSON.stringify(results, null, 2))
});