function _services_ipauth_ips_validate in Services IP Authentication 6

Same name and namespace in other branches

1. 7 services_ipauth.inc \_services_ipauth_ips_validate()

#element_validate callback to validate IP addresses (one per line).

See also

_services_ipauth_security_settings()

1 string reference to '_services_ipauth_ips_validate'

_services_ipauth_security_settings in ./services_ipauth.inc

Security settings form.

File

./services_ipauth.inc, line 83

Provides callbacks for the IP Authentication module.

Code

function _services_ipauth_ips_validate($element, &$form_state) {

  // Take user input.
  $ip_addresses_input = $element['#value'];

  // Convert user input to an associative array with non-empty unique values.
  $ip_addresses = drupal_map_assoc(array_filter(array_map('trim', array_unique(explode("\n", $ip_addresses_input)))));

  // Definition array of filter_var_array() can not have numeric keys. Change
  // the key of the numeric values so that they are interpreted as a string.
  foreach ($ip_addresses as $key => $address) {
    if (is_numeric($key)) {
      unset($ip_addresses[$key]);
      $ip_addresses[$key . 'x'] = $address;
    }
  }

  // Create the definition array for filter_var_array().
  $definition = array_combine(array_keys($ip_addresses), array_fill(0, count($ip_addresses), array(
    'filter' => FILTER_VALIDATE_IP,
  )));

  // filter_var_array() returns FALSE on failure, or an array with a result for
  // each key of the filtered array. If the result does not contain FALSE, all
  // elements of the array passed validation. array_filter() filters out values
  // that, when converted to boolean, equal FALSE. So if the filtered result
  // equals the normal result, all elements passed validation.
  if (!($result = filter_var_array($ip_addresses, $definition)) || array_filter($result) != $result) {
    $invalids = array_diff_key($ip_addresses, array_filter($result));
    foreach ($invalids as $key => $invalid) {
      if (services_ipauth_is_valid_ip_range($invalid)) {
        unset($invalids[$key]);
      }
    }
    if (!empty($invalids)) {
      form_error($element, t('Incorrect IP address format for following entries: @list', array(
        '@list' => theme('item_list', $invalids),
      )));
    }
  }

  // Set the value to an array, this way it is easier to work with the value
  // that will be stored in the $settings array.
  form_set_value($element, array_values($ip_addresses), $form_state);
}