class.ilCaptchaInputGUI.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once 'Services/Captcha/classes/class.ilSecurImageUtil.php';

class ilCaptchaInputGUI extends ilFormPropertyGUI
{
        protected $value;

        protected $size = 20;

        protected $image_width = 215;

        protected $image_height = 80;

        public function __construct($a_title = '', $a_postvar = '')
        {
                global $lng;

                parent::__construct($a_title, $a_postvar);
                $this->setType('captcha');
                if($lng instanceof ilLanguage)
                {
                        $lng->loadLanguageModule('cptch');
                }
        }

        public function setValue($a_value)
        {
                $this->value = $a_value;
        }

        public function getValue()
        {
                return $this->value;
        }

        public function setImageHeight($image_height)
        {
                $this->image_height = $image_height;
        }

        public function getImageHeight()
        {
                return $this->image_height;
        }

        public function setImageWidth($image_width)
        {
                $this->image_width = $image_width;
        }

        public function getImageWidth()
        {
                return $this->image_width;
        }

        public function setSize($size)
        {
                $this->size = $size;
        }

        public function getSize()
        {
                return $this->size;
        }

        public function checkInput()
        {
                global $lng;

                $_POST[$this->getPostVar()] = ilUtil::stripSlashes($_POST[$this->getPostVar()]);
                if($this->getRequired() && trim($_POST[$this->getPostVar()]) == '')
                {
                        if($lng instanceof ilLanguage)
                        {
                                $this->setAlert($lng->txt('msg_input_is_required'));
                        }

                        return false;
                }

                include_once('./Services/Captcha/classes/class.ilSecurImage.php');
                $si = new ilSecurImage();
                if(!$si->check($_POST[$this->getPostVar()]))
                {
                        if($lng instanceof ilLanguage)
                        {
                                $this->setAlert($lng->txt('cptch_wrong_input'));
                        }

                        return false;
                }

                return true;
        }

        public function render()
        {
                global $lng;

                $tpl = new ilTemplate('tpl.prop_captchainput.html', true, true, 'Services/Captcha');

                if(strlen($this->getValue()))
                {
                        $tpl->setCurrentBlock('prop_text_propval');
                        $tpl->setVariable('PROPERTY_VALUE', ilUtil::prepareFormOutput($this->getValue()));
                        $tpl->parseCurrentBlock();
                }
                $tpl->setVariable('POST_VAR', $this->getPostVar());
                $tpl->setVariable('CAPTCHA_ID', $this->getFieldId());
                $tpl->setVariable('SIZE', $this->getSize());

                $script = ilSecurImageUtil::getImageScript();
                $script = ilUtil::appendUrlParameterString($script, 'height=' . (int)$this->getImageHeight(), true);
                $script = ilUtil::appendUrlParameterString($script, 'width=' . (int)$this->getImageWidth(), true);
                $tpl->setVariable('IMAGE_SCRIPT', $script);
                $tpl->setVariable('AUDIO_SCRIPT', ilSecurImageUtil::getAudioScript());
                $tpl->setVariable('SRC_RELOAD', ilSecurImageUtil::getDirectory() . '/images/refresh.png');

                $tpl->setVariable('TXT_CAPTCHA_ALT', $lng->txt('captcha_alt_txt'));
                $tpl->setVariable('TXT_RELOAD', $lng->txt('captcha_code_reload'));
                $tpl->setVariable('TXT_CAPTCHA_AUDIO_TITLE', $lng->txt('captcha_audio_title'));
                $tpl->setVariable('TXT_CONSTR_PROP', $lng->txt('cont_constrain_proportions'));
                $tpl->setVariable('TXT_CAPTCHA_INFO', $lng->txt('captcha_code_info'));

                return $tpl->get();
        }

        public function insert(ilTemplate $a_tpl)
        {
                $html = $this->render();

                $a_tpl->setCurrentBlock('prop_generic');
                $a_tpl->setVariable('PROP_GENERIC', $html);
                $a_tpl->parseCurrentBlock();
        }

        public function setValueByArray($a_values)
        {
                $this->setValue($a_values[$this->getPostVar()]);
        }
}