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