WB 2.08.x

<?php

// $Id: captcha.php 624 2008-01-28 15:25:32Z thorn $

/*

 Website Baker Project <http://www.websitebaker.org/>

 Copyright (C) 2004-2008, Ryan Djurovich

 Website Baker is free software; you can redistribute it and/or modify

 it under the terms of the GNU General Public License as published by

 the Free Software Foundation; either version 2 of the License, or

 (at your option) any later version.

 Website Baker is distributed in the hope that it will be useful,

 but WITHOUT ANY WARRANTY; without even the implied warranty of

 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License

 along with Website Baker; if not, write to the Free Software

 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

// Must include code to stop this file being accessed directly

if(!defined('WB_PATH')) { exit("Cannot access this file directly"); }

if(!isset($admin)) {

	require_once(WB_PATH.'/framework/class.wb.php');

	$admin = new wb;

}

// check if module language file exists for the language set by the user (e.g. DE, EN)

global $MOD_CAPTCHA;

if(!file_exists(WB_PATH.'/modules/captcha_control/languages/'.LANGUAGE .'.php')) {

	// no module language file exists for the language set by the user, include default module language file EN.php

	require_once(WB_PATH.'/modules/captcha_control/languages/EN.php');

} else {

	// a module language file exists for the language defined by the user, load it

	require_once(WB_PATH.'/modules/captcha_control/languages/'.LANGUAGE .'.php');

}

// output-handler for image-captchas to determine size of image

if(!function_exists('captcha_header')) {

	function captcha_header() {

		header("Expires: Mon, 1 Jan 1990 05:00:00 GMT");

		header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");

		header("Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate");

		header("Cache-Control: post-check=0, pre-check=0", false); // MS made there own headers :-(

		header("Pragma: no-cache");

		header("Content-type: image/png");

		return;

	}

}

// get list of available CAPTCHAS for the dropdown-listbox in admin-tools

if(extension_loaded('gd') && function_exists('imagepng') && function_exists('imagettftext')) {

	$useable_captchas = array(

		'calc_text'=>$MOD_CAPTCHA_CONTROL['CALC_TEXT'],

		'calc_image'=>$MOD_CAPTCHA_CONTROL['CALC_IMAGE'],

		'calc_ttf_image'=>$MOD_CAPTCHA_CONTROL['CALC_TTF_IMAGE'],

		'ttf_image'=>$MOD_CAPTCHA_CONTROL['TTF_IMAGE'],

		'old_image'=>$MOD_CAPTCHA_CONTROL['OLD_IMAGE'],

		'text'=>$MOD_CAPTCHA_CONTROL['TEXT']

	);

} elseif(extension_loaded('gd') && function_exists('imagepng')) {

	$useable_captchas = array(

		'calc_text'=>$MOD_CAPTCHA_CONTROL['CALC_TEXT'],

		'calc_image'=>$MOD_CAPTCHA_CONTROL['CALC_IMAGE'],

		'old_image'=>$MOD_CAPTCHA_CONTROL['OLD_IMAGE'],

		'text'=>$MOD_CAPTCHA_CONTROL['TEXT']

	);

} else {

	$useable_captchas = array(

		'calc_text'=>$MOD_CAPTCHA_CONTROL['CALC_TEXT'],

		'text'=>$MOD_CAPTCHA_CONTROL['TEXT']

	);

}

if(!function_exists('call_captcha')) {

	function call_captcha() {

		global $MOD_CAPTCHA;

		$t = time();

		$_SESSION['captcha_time'] = $t;

		switch(CAPTCHA_TYPE) {

			// one special case

			case 'text': // text-captcha

				?><table class="captcha_table"><tr>

				<td class="text_captcha"><?php include(WB_PATH.'/include/captcha/captchas/text.php'); ?></td>

				<td><input type="text" name="captcha" maxlength="10"  style="width:70px" /></td>

				<td class="captcha_expl"><?php echo $MOD_CAPTCHA['VERIFICATION_INFO_QUEST']; ?></td>

				</tr></table><?php

				break;

			// two special cases

			case 'calc_text': // calculation as text

				?><table class="captcha_table"><tr>

				<td class="text_captcha"><?php include(WB_PATH.'/include/captcha/captchas/calc_text.php'); ?>&nbsp;=&nbsp;</td>

				<td><input type="text" name="captcha" maxlength="5"  style="width:20px" /></td>

				<td class="captcha_expl"><?php echo $MOD_CAPTCHA['VERIFICATION_INFO_RES']; ?></td>

				</tr></table><?php

				break;

			case 'calc_image': // calculation with image (old captcha)

				?><table class="captcha_table"><tr>

				<td class="image_captcha"><img src="<?php echo WB_URL."/include/captcha/captchas/calc_image.php?t=$t"; ?>" alt="Captcha" /></td><td>&nbsp;=&nbsp;</td>

				<td><input type="text" name="captcha" maxlength="5" style="width:20px" /></td>

				<td class="captcha_expl"><?php echo $MOD_CAPTCHA['VERIFICATION_INFO_RES']; ?></td>

				</tr></table><?php

				break;

			// normal images

			case 'ttf_image': // captcha with varying background and ttf-font

			case 'calc_ttf_image': // calculation with varying background and ttf-font

			case 'old_image': // old captcha

				?><table class="captcha_table"><tr>

				<td class="image_captcha"><img src="<?php echo WB_URL.'/include/captcha/captchas/'.CAPTCHA_TYPE.".php?t=$t"; ?>" alt="Captcha" /></td>

				<td><input type="text" name="captcha" maxlength="5" style="width:50px" /></td>

				<td class="captcha_expl"><?php echo $MOD_CAPTCHA['VERIFICATION_INFO_TEXT']; ?></td>

				</tr></table><?php

				break;

		}

	}

}

?>