@europeana/portal/src/modules/http/templates/utils.js

Europeana Portal

export const isHttps = ({ req }) => {
  if (process.client) {
    return (window.location.protocol === 'https:');
  }

  // Custom, non-standard header set by our gateway because gorouter on IBM
  // Cloud overwrites x-forwarded-proto
  if (req.headers['x-forwarded-protocol']) {
    return req.headers['x-forwarded-protocol'] === 'https';
  }

  if (req.headers['x-forwarded-proto']) {
    return !req.headers['x-forwarded-proto'].split(',').includes('http');
  }

  if (req.connection.encrypted === true) {
    return true;
  }

  if (req.protocol === 'https') {
    return true;
  }

  return false;
};

export const currentHost = ({ req }) => {
  if (process.client) {
    return window.location.host;
  }
  return (req.headers['x-forwarded-host'] || req.headers.host || '').split(',')[0];
};

export const currentProtocol = ({ req }) => {
  return isHttps({ req }) ? 'https:' : 'http:';
};

export const requestOrigin = (req) => {
  return currentProtocol({ req }) + '//' + currentHost({ req });
};

export const routeOnDatasetBlacklist = (route, datasetBlacklist) => {
  if (datasetBlacklist.length === 0) {
    return false;
  }
  if (typeof route !== 'object' || !route) {
    return false;
  }
  if (!/^item-all(___[a-z]{2})?$/.test(route.name)) {
    return false;
  }

  const dataset = route.params.pathMatch.split('/')[0];

  const datasetBlacklistRegExp = new RegExp(`^(${datasetBlacklist.join('|')})$`);
  return datasetBlacklistRegExp.test(dataset);
};

export const routePermittedOnEitherScheme = route => {
  if (typeof route !== 'object' || !route) {
    return false;
  }
  return /^iiif(___[a-z]{2})?$/.test(route.name);
};