*
* For the full copyright and license information, please view
* the LICENSE file that was distributed with this source code.
*/
namespace CodeIgniter\Honeypot;
use CodeIgniter\Honeypot\Exceptions\HoneypotException;
use CodeIgniter\HTTP\IncomingRequest;
use CodeIgniter\HTTP\RequestInterface;
use CodeIgniter\HTTP\ResponseInterface;
use Config\Honeypot as HoneypotConfig;
/**
* class Honeypot
*
* @see \CodeIgniter\Honeypot\HoneypotTest
*/
class Honeypot
{
/**
* Our configuration.
*
* @var HoneypotConfig
*/
protected $config;
/**
* Constructor.
*
* @throws HoneypotException
*/
public function __construct(HoneypotConfig $config)
{
$this->config = $config;
if (! $this->config->hidden) {
throw HoneypotException::forNoHiddenValue();
}
if ($this->config->container === '' || strpos($this->config->container, '{template}') === false) {
$this->config->container = '{template}
';
}
$this->config->containerId ??= 'hpc';
if ($this->config->template === '') {
throw HoneypotException::forNoTemplate();
}
if ($this->config->name === '') {
throw HoneypotException::forNoNameField();
}
}
/**
* Checks the request if honeypot field has data.
*
* @return bool
*/
public function hasContent(RequestInterface $request)
{
assert($request instanceof IncomingRequest);
return ! empty($request->getPost($this->config->name));
}
/**
* Attaches Honeypot template to response.
*
* @return void
*/
public function attachHoneypot(ResponseInterface $response)
{
if ($response->getBody() === null) {
return;
}
if ($response->getCSP()->enabled()) {
// Add id attribute to the container tag.
$this->config->container = str_ireplace(
'>{template}',
' id="' . $this->config->containerId . '">{template}',
$this->config->container
);
}
$prepField = $this->prepareTemplate($this->config->template);
$bodyBefore = $response->getBody();
$bodyAfter = str_ireplace('', $prepField . '', $bodyBefore);
if ($response->getCSP()->enabled() && ($bodyBefore !== $bodyAfter)) {
// Add style tag for the container tag in the head tag.
$style = '';
$bodyAfter = str_ireplace('', $style . '', $bodyAfter);
}
$response->setBody($bodyAfter);
}
/**
* Prepares the template by adding label
* content and field name.
*/
protected function prepareTemplate(string $template): string
{
$template = str_ireplace('{label}', $this->config->label, $template);
$template = str_ireplace('{name}', $this->config->name, $template);
if ($this->config->hidden) {
$template = str_ireplace('{template}', $template, $this->config->container);
}
return $template;
}
}