isUriAllowed method

bool isUriAllowed(Uri uri)

Tells whether the URI is allowed.

Implementation

bool isUriAllowed(Uri uri) {
  final host = uri.host;
  if (host.isEmpty) {
    return false;
  }
  final patterns = allowedDomains;
  for (var pattern in patterns) {
    {
      final i = pattern.indexOf('://');
      if (i < 0) {
        if (uri.scheme != 'https') {
          continue;
        }
      } else {
        final patternScheme = pattern.substring(0, i);
        if (patternScheme != '*' && uri.scheme != patternScheme) {
          continue;
        }
        pattern = pattern.substring(i + 3);
      }
    }
    if (pattern.startsWith('**.')) {
      if (host.endsWith(pattern.substring(3))) {
        return true;
      }
    }
    if (pattern.startsWith('*.')) {
      if (host.endsWith(pattern.substring(2)) &&
          host.indexOf('.') == host.length - pattern.length + 1) {
        return true;
      }
    }
    // Allow all domains
    if (pattern == '**') {
      return true;
    }
    if (host == pattern) {
      return true;
    }
  }
  return false;
}