AliasIO / wappalyzer

/** global: XMLSerializer */

if ( typeof browser !== 'undefined' && typeof document.body !== 'undefined' ) {

  try {

    sendMessage('init', {});

    // HTML

    var html = new XMLSerializer().serializeToString(document).split('\n');

    html = html

      .slice(0, 1000).concat(html.slice(html.length - 1000))

      .map(line => line.substring(0, 1000))

      .join('\n');

    // Scripts

    const scripts = Array.prototype.slice

      .apply(document.scripts)

      .filter(script => script.src)

      .map(script => script.src)

      .filter(script => script.indexOf('data:text/javascript;') !== 0);

    sendMessage('analyze', { html, scripts });

    // JavaScript variables

    const script = document.createElement('script');

    script.onload = () => {

      addEventListener('message', event => {

        if ( event.data.id !== 'js' ) {

          return;

        }

        document.body.removeChild(script);

        sendMessage('analyze', { js: event.data.js });

      }, true);

      sendMessage('get_js_patterns', {}, response => {

        if ( response ) {

          postMessage({

            id: 'patterns',

            patterns: response.patterns

          }, '*');

        }

      });

    };

    script.setAttribute('src', browser.extension.getURL('js/inject.js'));

    document.body.appendChild(script);

  } catch (e) {

    sendMessage('log', e);

  }

}