webscanner/src/monitor/dom.js

Automation scanner for web resources

/**
 * @expirimental
 * @param client
 * @return {Promise<[]>}
 */
async function getAllDOMEvents(client) {
  const DOMEvents = [];

  let evaluationRes = await client.Runtime.evaluate({
    expression: 'document.querySelectorAll("*");',
  });
  const { result } = await client.Runtime.getProperties({
    objectId: evaluationRes.result.objectId,
  });
  const elementsObjects = result.map((e) => e.value);

  for (let i = 0; i < elementsObjects.length; i++) {
    const object = elementsObjects[i];

    if (!object || !object.objectId) {
      continue;
    }
    const events = await client.DOMDebugger.getEventListeners({
      objectId: object.objectId,
    });
    for (let i = 0; i < events.listeners.length; i++) {
      delete object.objectId;
      delete object.subtype;
      delete object.type;
      DOMEvents.push({ ...events.listeners[i], ...object });
    }
  }

  evaluationRes = await client.Runtime.evaluate({ expression: 'document' });
  const documentEvents = await client.DOMDebugger.getEventListeners({
    objectId: evaluationRes.result.objectId,
  });
  if (documentEvents && documentEvents.listeners) {
    for (let i = 0; i < documentEvents.listeners.length; i++) {
      const object = { className: 'HTMLDocument', description: 'document' };
      DOMEvents.push({ ...documentEvents.listeners[i], ...object });
    }
  }

  evaluationRes = await client.Runtime.evaluate({ expression: 'window' });
  const windowEvents = await client.DOMDebugger.getEventListeners({
    objectId: evaluationRes.result.objectId,
  });
  if (windowEvents && windowEvents.listeners) {
    for (let i = 0; i < windowEvents.listeners.length; i++) {
      const object = { className: 'Window', description: 'Window' };
      DOMEvents.push({ ...windowEvents.listeners[i], ...object });
    }
  }

  return DOMEvents;
}

module.exports = {
  getAllDOMEvents,
};