CaptchaBundle/Type/CaptchaType.php

164 lines
3.8 KiB
PHP
Executable File

<?php
namespace Gregwar\CaptchaBundle\Type;
use Symfony\Component\HttpFoundation\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\FormBuilder;
use Symfony\Component\Form\Exception\FormException;
use Gregwar\CaptchaBundle\Validator\CaptchaValidator;
use Gregwar\CaptchaBundle\Generator\CaptchaGenerator;
/**
* Captcha type
*
* @author Gregwar <g.passault@gmail.com>
*/
class CaptchaType extends AbstractType
{
/**
* The image width
* @var integer
*/
protected $width;
/**
* The image height
* @var integer
*/
protected $height;
/**
* The code length
* @var integer
*/
protected $length;
/**
* Generate image or data
* @var boolean
*/
protected $asFile;
/**
* Folder to save captcha images in,
* relative to public web folder
* @var string
*/
protected $imageFolder;
/**
* Public web folder
* @var string
*/
protected $webPath;
/**
* Frequence of garbage collection in fractions of 1
* @var int
*/
public $gcFreq;
/**
* Maximum age of images in minutes
* @var int
*/
public $expiration;
/**
* The session
* @var Symfony\Component\HttpFoundation\Session
*/
protected $session;
private $key = 'captcha';
public function __construct(Session $session, $width, $height, $length, $asFile, $imageFolder, $webPath, $gcFreq, $expiration)
{
$this->session = $session;
$this->width = $width;
$this->height = $height;
$this->length = $length;
$this->asFile = $asFile;
$this->imageFolder = $imageFolder;
$this->webPath = $webPath;
$this->gcFreq = $gcFreq;
$this->expiration = $expiration;
}
public function buildForm(FormBuilder $builder, array $options)
{
$builder->addValidator(
new CaptchaValidator($this->session, $this->key)
);
}
public function buildView(FormView $view, FormInterface $form)
{
$generator = new CaptchaGenerator($this->generateCaptchaValue(), $this->imageFolder, $this->webPath, $this->gcFreq, $this->expiration);
if ($this->asFile) {
$view->set('captcha_code', $generator->getFile($this->width, $this->height));
} else {
$view->set('captcha_code', $generator->getCode($this->width, $this->height));
}
$view->set('captcha_width', $this->width);
$view->set('captcha_height', $this->height);
}
public function getDefaultOptions(array $options = array())
{
if (isset($options['width'])) {
$this->width = $options['width'];
}
if (isset($options['height'])) {
$this->height = $options['height'];
}
if (isset($options['length'])) {
$this->length = $options['length'];
}
if (isset($options['as_file'])) {
$this->asFile = $options['as_file'];
}
return array(
'width' => $this->width,
'height' => $this->height,
'length' => $this->length,
'as_file' => $this->asFile,
'property_path' => false,
);
}
public function getParent(array $options)
{
return 'text';
}
public function getName()
{
return 'captcha';
}
private function generateCaptchaValue()
{
$charset = 'abcdefghijklmnopqrstuvwxyz0123456789';
$value = '';
$chars = str_split($charset);
for ($i=0; $i<$this->length; $i++) {
$value.= $chars[array_rand($chars)];
}
$this->session->set($this->key, $value);
return $value;
}
}