/**
* Verifies the AJAX request to prevent processing requests external of the blog.
*
* @since 0.0.1
*
* @param int|string $action Action nonce.
* @param false|string $query_arg Optional. Key to check for the nonce in `$_REQUEST` (since 2.5). If false,
* `$_REQUEST` values will be evaluated for '_ajax_nonce', and '_hqnonce'
* (in that order). Default false.
* @param bool $die Optional. Whether to die early when the nonce cannot be verified.
* Default true.
* @return false|int False if the nonce is invalid, 1 if the nonce is valid and generated between
* 0-12 hours ago, 2 if the nonce is valid and generated between 12-24 hours ago.
*/
function check_ajax_referer($action = -1, $query_arg = false, $die = true)
{
$nonce = '';
if ($query_arg && isset($_REQUEST[$query_arg])) {
$nonce = $_REQUEST[$query_arg];
} elseif (isset($_REQUEST['_ajax_nonce'])) {
$nonce = $_REQUEST['_ajax_nonce'];
} elseif (isset($_REQUEST['_hqnonce'])) {
$nonce = $_REQUEST['_hqnonce'];
}
$result = hq_verify_nonce($nonce, $action);
if ($die && false === $result) {
if (defined('DOING_AJAX') && DOING_AJAX) {
hq_die(-1);
} else {
die('-1');
}
}
/**
* Fires once the AJAX request has been validated or not.
*
* @since 0.0.1
*
* @param string $action The AJAX nonce action.
* @param false|int $result False if the nonce is invalid, 1 if the nonce is valid and generated between
* 0-12 hours ago, 2 if the nonce is valid and generated between 12-24 hours ago.
*/
do_action('check_ajax_referer', $action, $result);
return $result;
}
/**
* Get the current step.
*
* @since 0.0.1
*
* @return int Current step
*/
public function step()
{
if (!isset($_GET['step'])) {
return 1;
}
$step = (int) $_GET['step'];
if ($step < 1 || 3 < $step || 2 == $step && !hq_verify_nonce($_REQUEST['_hqnonce-custom-header-upload'], 'custom-header-upload') || 3 == $step && !hq_verify_nonce($_REQUEST['_hqnonce'], 'custom-header-crop-image')) {
return 1;
}
return $step;
}