# AWS WAF

Port of [AWS WAF (Amazon Web Services Web Application Firewall) Solver](https://github.com/xKiian/awswaf) using Axios,
with some [changes](https://github.com/pytr-org/pytr/tree/master/pytr/awswaf) incorporated.

## Usage

```js
const AwsWaf = require('@ntlab/awswaf');
const axios = require('axios');
const cheerio = require('cheerio');

(async function run() {
    let awsWafToken;
    const headers = {
        'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36'
    }
    const url = 'https://example.com/';
    const f = async (m = 'head') => {
        let waf;
        await axios[m](url, {headers})
            .then(res => {
                console.log('Token is not needed...');
            })
            .catch(err => {
                if (err instanceof axios.AxiosError && err.status === 405) {
                    waf = err.response;
                }
            });
        if (waf) {
            if (m === 'head') {
                await f('get');
            } else if (waf.data) {
                const $ = cheerio.load(waf.data);
                const challengeJs = $('script[src]')
                    .toArray()
                    .map(s => $(s).attr('src'))
                    .filter(s => s.includes('challenge.js'))
                if (challengeJs.length) {
                    const [, endpoint] = challengeJs[0].match(/(https:\/\/[^"]+)\/challenge\.js/);
                    const waf = new AwsWaf(endpoint, 'example.com', headers['user-agent']);
                    awsWafToken = await waf.getToken();
                }
            }
        }
    }
    await f();
    if (awsWafToken) {
        console.log(`Got token ${awsWafToken}...`);
    }
})();
```