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| <?php
namespace Gregwar\CaptchaBundle\Type;
use Symfony\Component\HttpFoundation\Session\Session;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\Form\FormView;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\Exception\FormException;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Symfony\Component\Form\FormViewInterface;
use Gregwar\CaptchaBundle\Validator\CaptchaValidator;
use Gregwar\CaptchaBundle\Generator\CaptchaGenerator;
use Gregwar\CaptchaBundle\DataTransformer\EmptyTransformer;
/**
* Captcha type
*
* @author Gregwar <g.passault@gmail.com>
*/
class CaptchaType extends AbstractType
{
/**
* Options
* @var array
*/
private $options = array();
/**
* Session key
* @var string
*/
private $key = 'captcha';
public function __construct(Session $session, $config)
{
$this->session = $session;
$this->options = $config;
}
public function buildForm(FormBuilderInterface $builder, array $options)
{
$this->key = $builder->getForm()->getName();
$builder->addValidator(
new CaptchaValidator($this->session,
$this->key,
$options['invalid_message'],
$options['bypass_code'])
);
}
public function buildView(FormView $view, FormInterface $form, array $options)
{
$fingerprint = null;
if ($options['keep_value'] && $this->session->has($this->key.'_fingerprint')) {
$fingerprint = $this->session->get($this->key.'_fingerprint');
}
$generator = new CaptchaGenerator($this->generateCaptchaValue(),
$options['image_folder'],
$options['web_path'],
$options['gc_freq'],
$options['expiration'],
$options['font'],
$fingerprint,
$options['quality']);
if ($options['as_file']) {
$captchaCode = $generator->getFile($options['width'], $options['height']);
} else {
$captchaCode = $generator->getCode($options['width'], $options['height']);
}
if ($options['keep_value']) {
$this->session->set($this->key.'_fingerprint', $generator->getFingerprint());
}
$fieldVars = array(
'captcha_width' => $options['width'],
'captcha_height' => $options['height'],
'captcha_code' => $captchaCode,
'value' => '',
);
foreach($fieldVars as $name => $value){
$view->set($name,$value);
}
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$this->options['property_path'] = false;
$resolver->setDefaults($this->options);
}
public function getParent()
{
return 'text';
}
public function getName()
{
return 'captcha';
}
private function generateCaptchaValue()
{
if (!$this->options['keep_value'] || !$this->session->has($this->key)) {
$value = '';
$chars = str_split($this->options['charset']);
for ($i=0; $i<$this->options['length']; $i++) {
$value.= $chars[array_rand($chars)];
}
$this->session->set($this->key, $value);
} else {
$value = $this->session->get($this->key);
}
return $value;
}
} |
