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<?php
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/**
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*
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* @category captcha
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* @package include
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* @subpackage
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* @author Ryan Djurovich,WebsiteBaker Project
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* @copyright 2009-2013, WebsiteBaker Org. e.V.
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* @link http://www.websitebaker.org/
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* @license http://www.gnu.org/licenses/gpl.html
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* @platform WebsiteBaker 2.8.x
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* @requirements PHP 5.2.2 and higher
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* @version $Id: captcha.php 1898 2013-04-03 17:47:13Z Luisehahne $
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* @filesource $HeadURL: svn://isteam.dynxs.de/wb-archiv/branches/2.8.x/wb/include/captcha/captcha.php $
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* @lastmodified $Date: 2013-04-03 19:47:13 +0200 (Wed, 03 Apr 2013) $
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*
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*/
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// displays the image or text inside an <iframe>
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if(!function_exists('display_captcha_real')) {
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function display_captcha_real($kind='image') {
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$t = time();
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$output = "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" ";
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$output .= "\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n";
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$output .= "<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"";
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$output .= strtolower(LANGUAGE)."\" lang=\"".strtolower(LANGUAGE)."\">\n";
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$output .= "\t<head>\n\t\t<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"/>\n";
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$output .= "\t\t<title>captcha</title>\n\t</head>\n\t<body>\n";
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$_SESSION['captcha_time'] = $t;
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if($kind=='image') {
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$output .= "\t\t<a title=\"reload\" href=\"".WB_URL."/include/captcha/captcha.php?display_captcha_X986E21=2\">";
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$output .= "<img style=\"border: none;\" src=\"".WB_URL."/include/captcha/captchas/";
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$output .= CAPTCHA_TYPE.".php?t=".$t."\" alt=\"Captcha\" /></a>\n";
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} else {
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$output .= "\t\t<h2>error</h2>";
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}
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$output .= "\t</body>\n</html>";
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echo $output;
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}
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}
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// called from an <iframe>
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if(isset($_GET['display_captcha_X986E21'])) {
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require('../../config.php');
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switch(CAPTCHA_TYPE) {
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case 'calc_image':
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case 'calc_ttf_image':
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case 'ttf_image':
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case 'old_image':
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display_captcha_real('image');
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break;
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}
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exit(0);
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}
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// Make sure page cannot be accessed directly
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if(!defined('WB_PATH')) { exit("Cannot access this file directly"); }
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// check if module language file exists for the language set by the user (e.g. DE, EN)
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global $MOD_CAPTCHA;
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if(!file_exists(WB_PATH.'/modules/captcha_control/languages/'.LANGUAGE .'.php')) {
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// no module language file exists for the language set by the user, include default module language file EN.php
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require_once(WB_PATH.'/modules/captcha_control/languages/EN.php');
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} else {
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// a module language file exists for the language defined by the user, load it
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require_once(WB_PATH.'/modules/captcha_control/languages/'.LANGUAGE .'.php');
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}
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// output-handler for image-captchas to determine size of image
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if(!function_exists('captcha_header')) {
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function captcha_header() {
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header("Expires: Mon, 1 Jan 1990 05:00:00 GMT");
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header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
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header("Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate");
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header("Pragma: no-cache");
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header("Content-type: image/png");
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return;
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}
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}
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// get list of available CAPTCHAS for the dropdown-listbox in admin-tools
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if(extension_loaded('gd') && function_exists('imagepng') && function_exists('imagettftext')) {
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$useable_captchas = array(
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'calc_text'=>$MOD_CAPTCHA_CONTROL['CALC_TEXT'],
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'calc_image'=>$MOD_CAPTCHA_CONTROL['CALC_IMAGE'],
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'calc_ttf_image'=>$MOD_CAPTCHA_CONTROL['CALC_TTF_IMAGE'],
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'ttf_image'=>$MOD_CAPTCHA_CONTROL['TTF_IMAGE'],
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'old_image'=>$MOD_CAPTCHA_CONTROL['OLD_IMAGE'],
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'text'=>$MOD_CAPTCHA_CONTROL['TEXT']
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);
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} elseif(extension_loaded('gd') && function_exists('imagepng')) {
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$useable_captchas = array(
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'calc_text'=>$MOD_CAPTCHA_CONTROL['CALC_TEXT'],
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'calc_image'=>$MOD_CAPTCHA_CONTROL['CALC_IMAGE'],
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'old_image'=>$MOD_CAPTCHA_CONTROL['OLD_IMAGE'],
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'text'=>$MOD_CAPTCHA_CONTROL['TEXT']
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);
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} else {
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$useable_captchas = array(
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'calc_text'=>$MOD_CAPTCHA_CONTROL['CALC_TEXT'],
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'text'=>$MOD_CAPTCHA_CONTROL['TEXT']
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);
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}
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if(!function_exists('call_captcha')) {
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function call_captcha($action='all', $style='', $sec_id='') {
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global $MOD_CAPTCHA;
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$t = time();
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$_SESSION['captcha_time'] = $t;
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// get width and height of captcha image for use in <iframe>
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switch(CAPTCHA_TYPE) {
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case 'calc_image':
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$captcha_width = 160;
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$captcha_height = 55;
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break;
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case 'calc_ttf_image':
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$captcha_width = 175;
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$captcha_height = 55;
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break;
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case 'ttf_image':
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$captcha_width = 175;
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$captcha_height = 55;
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break;
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case 'old_image':
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$captcha_width = 160;
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$captcha_height = 55;
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break;
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default:
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$captcha_width = 250;
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$captcha_height = 100;
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}
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if($action=='all') {
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switch(CAPTCHA_TYPE) {
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case 'text': // text-captcha
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?><table class="captcha_table"><tr>
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<td class="text_captcha">
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<?php include(WB_PATH.'/include/captcha/captchas/'.CAPTCHA_TYPE.'.php'); ?>
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</td>
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<td></td>
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<td><input type="text" name="captcha" maxlength="50" style="width:150px;" /></td>
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<td class="captcha_expl"><?php echo $MOD_CAPTCHA['VERIFICATION_INFO_QUEST']; ?></td>
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</tr></table><?php
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break;
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case 'calc_text': // calculation as text
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?><table class="captcha_table"><tr>
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<td class="text_captcha">
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<?php include(WB_PATH.'/include/captcha/captchas/'.CAPTCHA_TYPE.'.php'); ?>
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</td>
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<td> = </td>
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<td><input type="text" name="captcha" maxlength="10" style="width:30px;" /></td>
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<td class="captcha_expl"><?php echo $MOD_CAPTCHA['VERIFICATION_INFO_RES']; ?></td>
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</tr></table><?php
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break;
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case 'calc_image': // calculation with image (old captcha)
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case 'calc_ttf_image': // calculation with varying background and ttf-font
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?><table class="captcha_table" style="font-size: 100%;"><tr>
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<td class="image_captcha">
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<?php echo "<iframe class=\"captcha_iframe\" width=\"$captcha_width\" height=\"$captcha_height\" style=\"overflow:hidden;border: 1px solid #999;\" name=\"captcha_iframe_$sec_id\" src=\"". WB_URL ."/include/captcha/captcha.php?display_captcha_X986E21=1&s=$sec_id"; ?>">
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<img src="<?php echo WB_URL.'/include/captcha/captchas/'.CAPTCHA_TYPE.".php?t=$t&s=$sec_id"; ?>" alt="Captcha" style="margin: 0;padding: 0;" />
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</iframe>
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</td>
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<td> = </td>
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<td><input type="text" name="captcha" maxlength="10" style="width:30px;" /></td>
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<td class="captcha_expl"><?php echo $MOD_CAPTCHA['VERIFICATION_INFO_RES']; ?></td>
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</tr></table><?php
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break;
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// normal images
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case 'ttf_image': // captcha with varying background and ttf-font
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case 'old_image': // old captcha
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?><table class="captcha_table"><tr>
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<td class="image_captcha">
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<?php echo "<iframe class=\"captcha_iframe\" width=\"$captcha_width\" height=\"$captcha_height\" style=\"overflow:hidden;border: 1px solid #999;\" name=\"captcha_iframe_$sec_id\" src=\"". WB_URL ."/include/captcha/captcha.php?display_captcha_X986E21=1&s=$sec_id"; ?> " >
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<img src="<?php echo WB_URL.'/include/captcha/captchas/'.CAPTCHA_TYPE.".php?t=$t&s=$sec_id"; ?>" alt="Captcha" style="margin: 0;padding: 0;" />
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</iframe>
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</td>
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<td></td>
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<td><input type="text" name="captcha" maxlength="10" style="width:50px;" /></td>
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<td class="captcha_expl"><?php echo $MOD_CAPTCHA['VERIFICATION_INFO_TEXT']; ?></td>
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</tr></table><?php
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break;
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}
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} elseif($action=='image') {
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switch(CAPTCHA_TYPE) {
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case 'text': // text-captcha
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case 'calc_text': // calculation as text
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echo ($style?"<span $style>":'');
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include(WB_PATH.'/include/captcha/captchas/'.CAPTCHA_TYPE.'.php');
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echo ($style?'</span>':'');
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break;
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case 'calc_image': // calculation with image (old captcha)
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case 'calc_ttf_image': // calculation with varying background and ttf-font
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case 'ttf_image': // captcha with varying background and ttf-font
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case 'old_image': // old captcha
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echo "<img $style src=\"".WB_URL.'/include/captcha/captchas/'.CAPTCHA_TYPE.".php?t=$t&s=$sec_id\" />";
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break;
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}
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} elseif($action=='image_iframe') {
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switch(CAPTCHA_TYPE) {
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case 'text': // text-captcha
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echo ($style?"<span $style>":'');
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include(WB_PATH.'/include/captcha/captchas/'.CAPTCHA_TYPE.'.php');
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echo ($style?'</span>':'');
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break;
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case 'calc_text': // calculation as text
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include(WB_PATH.'/include/captcha/captchas/'.CAPTCHA_TYPE.'.php');
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break;
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case 'calc_image': // calculation with image (old captcha)
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case 'calc_ttf_image': // calculation with varying background and ttf-font
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case 'ttf_image': // captcha with varying background and ttf-font
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case 'old_image': // old captcha
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?>
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<?php echo "<iframe class=\"captcha_iframe\" width=\"$captcha_width\" height=\"$captcha_height\" scrolling=\"no\" marginheight=\"0\" marginwidth=\"0\" frameborder=\"0\" name=\"captcha_iframe_$sec_id\" src=\"". WB_URL ."/include/captcha/captcha.php?display_captcha_X986E21=1&s=$sec_id"; ?>">
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<?php
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echo "<img $style alt=\"Captcha\" src=\"".WB_URL.'/include/captcha/captchas/'.CAPTCHA_TYPE.".php?t=$t\" />";
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?></iframe><?php
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break;
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}
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} elseif($action=='input') {
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switch(CAPTCHA_TYPE) {
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case 'text': // text-captcha
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echo '<input type="text" name="captcha" '.($style?$style:'style="width:150px;" maxlength="50"').' />';
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break;
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case 'calc_text': // calculation as text
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case 'calc_image': // calculation with image (old captcha)
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case 'calc_ttf_image': // calculation with varying background and ttf-font
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echo '<input type="text" name="captcha" '.($style?$style:'style="width:20px;" maxlength="10"').' />';
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break;
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case 'ttf_image': // captcha with varying background and ttf-font
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case 'old_image': // old captcha
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echo '<input type="text" name="captcha" '.($style?$style:'style="width:50px;" maxlength="10"').' />';
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break;
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}
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} elseif($action=='text') {
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echo ($style?"<span $style>":'');
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switch(CAPTCHA_TYPE) {
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case 'text': // text-captcha
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echo $MOD_CAPTCHA['VERIFICATION_INFO_QUEST'];
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break;
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case 'calc_text': // calculation as text
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case 'calc_image': // calculation with image (old captcha)
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case 'calc_ttf_image': // calculation with varying background and ttf-font
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echo $MOD_CAPTCHA['VERIFICATION_INFO_RES'];
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break;
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case 'ttf_image': // captcha with varying background and ttf-font
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case 'old_image': // old captcha
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echo $MOD_CAPTCHA['VERIFICATION_INFO_TEXT'];
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break;
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}
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echo ($style?'</span>':'');
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}
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}
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}
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