adyen-detect.js

var request = require('request');

const cheerio = require('cheerio')

const { URL } = require('url');

const chalk = require('chalk');




const init = function(domain){

    return new Promise( (resolve, reject) => {  
         
        request( `http://${domain}`, (error, response, body)  => {

            if( typeof response === "undefined" ||  error ) return reject(error);
        
            if( response.statusCode === 200 && body ){
                
                const jsFiles = getJsUrlfromDocument(body,domain);
        
                if( !jsFiles && !jsFiles.length > 0) return reject('No JavaScript files');
        
                let proms = requestsJS( jsFiles );
    
                Promise
                    .all(proms)
                    .then( results  => {

                        return resolve(results);
                    })
                    .catch( error  => {
                        
                        return reject(error);

                    });
                      
            }  
        
        });


    })
        
};







const requestsJS = function(jsList){

    var promises = [ ];
      
    jsList.forEach( jsUrl => promises.push(  searchAdyen(jsUrl) ) );

    return promises;

}





let searchAdyen = function(jsUrl){

    return new Promise( (resolve, reject) => { 

        request( jsUrl , (error, response, body)  => {
        
            if( typeof response == "undefined" ||  error ) return reject(error);
    
            if( response.statusCode === 200 && body ){
                    
                return resolve({
                    url : jsUrl,
                    adyen : (/adyen\.encrypt/).test(body) //  window\.adyen
                });
    
            }
        
        });

    });

} 



const getJsUrlfromDocument  = function(body,domain){

    const $ = cheerio.load(body);

    var scripts = [];
        
    try {
        
        $('script').each( function(i, elem){

            const src = $(this).attr('src');
        
            if( typeof src !== "undefined"){

                scripts.push( formatUrl(src,domain) );

            }  
            
        });

        console.log( chalk.grey("Scripts are ", scripts ) );

    } catch (error) {

        console.log( chalk.red('Cheerio failed ', error ) )

    }


    return ( scripts.length > 0 ) ? scripts : false;

}




const formatUrl = function(src,domain){

    let scriptUrl = new URL( src , `http://${domain}` );

    return scriptUrl.href;

}





module.exports = {
    init : init
}

app.js

const detectAdyen = require('./adyen-detect.js');

const chalk = require('chalk');

const _ = require('lodash');



let url = "birchbox.fr";

detectAdyen
    .init(url)
        .then( r => {

            const script = _.find( r, { 'adyen' : true } );

            const result = script ? chalk.green(`We found Adyen in ${script.url}`) : 'We didn\' find adyen';

            console.log( result );

        })
        .catch( e => console.log(e) );