oidc-provider/lib/helpers/sector_identifier.js

OAuth 2.0 Authorization Server implementation for Node.js with OpenID Connect

import { InvalidClientMetadata } from './errors.js';

export default (client) => {
  if (client.subjectType === 'pairwise') {
    if (!client.sectorIdentifierUri) {
      switch (true) {
        case client.responseTypes.length !== 0:
          return new URL(client.redirectUris[0]).host;
        case client.grantTypes.includes('urn:openid:params:grant-type:ciba'):
        case client.grantTypes.includes('urn:ietf:params:oauth:grant-type:device_code'):
          return new URL(client.jwksUri).host;
        default:
          throw new InvalidClientMetadata('could not determine a sector identifier');
      }
    }
  }

  return client.sectorIdentifierUri ? new URL(client.sectorIdentifierUri).host : undefined;
};