169 lines
4.0 KiB
PHP
Executable File
169 lines
4.0 KiB
PHP
Executable File
<?php
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namespace Gregwar\CaptchaBundle\Type;
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use Symfony\Component\HttpFoundation\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\FormBuilder;
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use Symfony\Component\Form\Exception\FormException;
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use Gregwar\CaptchaBundle\Validator\CaptchaValidator;
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use Gregwar\CaptchaBundle\Generator\CaptchaGenerator;
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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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* The image width
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* @var integer
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*/
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protected $width;
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/**
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* The image height
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* @var integer
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*/
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protected $height;
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/**
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* The code length
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* @var integer
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*/
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protected $length;
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/**
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* Generate image or data
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* @var boolean
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*/
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protected $asFile;
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/**
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* Folder to save captcha images in,
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* relative to public web folder
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* @var string
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*/
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protected $imageFolder;
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/**
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* Public web folder
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* @var string
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*/
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protected $webPath;
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/**
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* Frequence of garbage collection in fractions of 1
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* @var int
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*/
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public $gcFreq;
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/**
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* Maximum age of images in minutes
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* @var int
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*/
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public $expiration;
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/**
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* The session
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* @var Symfony\Component\HttpFoundation\Session
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*/
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protected $session;
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private $key = 'captcha';
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public function __construct(Session $session, $width, $height, $length, $asFile, $imageFolder, $webPath, $gcFreq, $expiration)
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{
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$this->session = $session;
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$this->width = $width;
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$this->height = $height;
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$this->length = $length;
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$this->asFile = $asFile;
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$this->imageFolder = $imageFolder;
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$this->webPath = $webPath;
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$this->gcFreq = $gcFreq;
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$this->expiration = $expiration;
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}
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public function buildForm(FormBuilder $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)
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);
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}
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public function buildView(FormView $view, FormInterface $form)
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{
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$generator = new CaptchaGenerator($this->generateCaptchaValue(), $this->imageFolder, $this->webPath, $this->gcFreq, $this->expiration);
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if ($this->asFile) {
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$view->set('captcha_code', $generator->getFile($this->width, $this->height));
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} else {
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$view->set('captcha_code', $generator->getCode($this->width, $this->height));
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}
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$view->set('captcha_width', $this->width);
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$view->set('captcha_height', $this->height);
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}
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public function getDefaultOptions(array $options = array())
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{
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if (isset($options['width'])) {
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$this->width = $options['width'];
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}
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if (isset($options['height'])) {
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$this->height = $options['height'];
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}
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if (isset($options['length'])) {
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$this->length = $options['length'];
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}
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if (isset($options['as_file'])) {
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$this->asFile = $options['as_file'];
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}
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return array(
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'width' => $this->width,
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'height' => $this->height,
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'length' => $this->length,
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'as_file' => $this->asFile,
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'property_path' => false,
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);
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}
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public function getParent(array $options)
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{
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return 'text';
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}
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public function getName()
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{
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return 'captcha';
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}
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private function generateCaptchaValue()
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{
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if (!$this->session->has($this->key)) {
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$value = '';
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$charset = 'abcdefhjkmnprstuvwxyz23456789';
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$chars = str_split($charset);
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for ($i=0; $i<$this->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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}
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