/**
* Validates the Skimlinks options (via update_option() hook)
*/
function sl_validate_settings($option_name, $old_value, $new_value)
{
switch ($option_name) {
case 'sl_publisher_id':
//convert the value to uppercase for 1234x5678
if ($new_value !== strtoupper($new_value)) {
$new_value = strtoupper($new_value);
update_option($option_name, $new_value);
}
if ($new_value > '' && !sl_validate_publisher_id($new_value)) {
update_option($option_name, sl_validate_publisher_id($old_value) ? $old_value : '');
sl_add_setting_validation_error('sl_validation', $option_name, 'The Publisher ID you entered was not valid.');
}
break;
case 'sl_subdomain':
if ($new_value > '' && strpos($new_value, 'http') !== 0) {
$new_value = 'http://' . $new_value;
update_option($option_name, $new_value);
}
if ($new_value == '' && sl_is_subdomain_enabled()) {
sl_add_setting_validation_error('sl_validation', $option_name, 'The subdomain information you entered was not valid');
update_option('sl_enable_subdomain', '');
} else {
if ($new_value > '' && sl_is_subdomain_enabled() && !sl_validate_subdomain($new_value)) {
sl_add_setting_validation_error('sl_validation', $option_name, 'The subdomain information you entered was not valid');
if ($old_value > '') {
update_option($option_name, $old_value);
} else {
update_option($option_name, '');
}
}
}
break;
}
}
/**
* Returns the domain_id part of Publisher ID
*
* @return string || null if no pub id
*/
function sl_get_publisher_id_domain_id()
{
$publisher_id = sl_get_publisher_id();
if (!sl_validate_publisher_id($publisher_id)) {
return null;
}
return end(explode('X', $publisher_id));
}