public static function API()
{
#-- load data
if ($id = @$_GET[CAPTCHA_PARAM_ID]) {
#-- special case
if ($id == 'base.js') {
easy_captcha_utility::js_base();
} else {
$c = new easy_captcha($id = NULL, $ignore_expiration = 1);
$expired = !$c->is_valid();
#-- JS-RPC request, check entered solution on the fly
if ($test = @$_REQUEST[CAPTCHA_PARAM_INPUT]) {
#-- check
if ($expired || empty($c->image)) {
die(easy_captcha_utility::js_header('alert("captcha error: request invalid (wrong storage id) / or expired");'));
}
if (0 >= $c->ajax_tries--) {
$c->log("::API", "JS-RPC", "ajax_tries exhausted ({$c->ajax_tries})");
}
$ok = $c->image->solved($test) || $c->text->solved($test);
#-- sendresult
easy_captcha_utility::js_rpc($ok);
} else {
if ($expired) {
$type = "image/png";
$bin = easy_captcha_utility::expired_png();
} else {
$type = "image/jpeg";
$bin = $c->image->jpeg();
}
header("Pragma: no-cache");
header("Cache-Control: no-cache, no-store, must-revalidate, private");
header("Expires: " . gmdate("r", time()));
header("Content-Length: " . strlen($bin));
header("Content-Type: {$type}");
print $bin;
}
}
exit;
}
}
