WB 2.08.x

<?php

// $Id: captcha.php 858 2008-09-18 21:24:41Z 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

*/

// displays the image or text inside an <iframe>

function display_captcha_real($kind='image') {

	$t = time();

	$_SESSION['captcha_time'] = $t;

	if($kind=='image') {

		?><a title="reload" href="<?php echo WB_URL.'/include/captcha/captcha.php?display_captcha_X986E21=2'; ?>">

		  <img style="border: none;" src="<?php echo WB_URL.'/include/captcha/captchas/'.CAPTCHA_TYPE.".php?t=$t"; ?>" alt="Captcha" />

			</a><?php

	} elseif($kind=='text') {

		?><a style="text-decoration:none;" title="reload" href="<?php echo WB_URL.'/include/captcha/captcha.php?display_captcha_X986E21=2'; ?>"><?php

		include(WB_PATH.'/include/captcha/captchas/'.CAPTCHA_TYPE.'.php');

		?></a><?php

	} else {

		echo 'error';

	}

}

// called from an <iframe>

if(isset($_GET['display_captcha_X986E21'])) {

	require('../../config.php');

	switch(CAPTCHA_TYPE) {

	case 'text':

	case 'calc_text':

		display_captcha_real('text');

		break;

	case 'calc_image':

	case 'calc_ttf_image':

	case 'ttf_image':

	case 'old_image':

		display_captcha_real('image');

		break;

	}

	exit(0);

}

// Make sure page cannot be accessed directly

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

// 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($action='all', $style='') {

		global $MOD_CAPTCHA;

		$t = time();

		$_SESSION['captcha_time'] = $t;

		// get width and height of captcha image or text for use in <iframe>

		switch(CAPTCHA_TYPE) {

		case 'text':

			$captcha_width = 250;

			$captcha_height = 100;

			break;

		case 'calc_text':

			$captcha_width = 120;

			$captcha_height = 20;

			break;

		case 'calc_image':

			$captcha_width = 142;

			$captcha_height = 30;

			break;

		case 'calc_ttf_image':

			$captcha_width = 162;

			$captcha_height = 40;

			break;

		case 'ttf_image':

			$captcha_width = 162;

			$captcha_height = 40;

			break;

		case 'old_image':

			$captcha_width = 142;

			$captcha_height = 30;

			break;

		default:

			$captcha_width = 250;

			$captcha_height = 100;

		}

		if($action=='all') {

			switch(CAPTCHA_TYPE) {

				// one special case

				case 'text': // text-captcha - we don't use an <iframe> in this case

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

					<td class="text_captcha">

						<?php include(WB_PATH.'/include/captcha/captchas/'.CAPTCHA_TYPE.'.php'); ?>

					</td>

					<td></td>

					<td><input type="text" name="captcha" maxlength="50"  style="width:150px;" /></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">

						<iframe class="captcha_iframe" width="<?php echo $captcha_width; ?>" height="<?php echo $captcha_height; ?>" scrolling="no" marginheight="0" marginwidth="0" frameborder="0" name="captcha_iframe" src="<?php echo WB_URL.'/include/captcha/captcha.php?display_captcha_X986E21=1'; ?>">

						<?php include(WB_PATH.'/include/captcha/captchas/'.CAPTCHA_TYPE.'.php'); ?>

						</iframe>

					</td>

					<td>&nbsp;=&nbsp;</td>

					<td><input type="text" name="captcha" maxlength="10"  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)

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

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

					<td class="image_captcha">

						<iframe class="captcha_iframe" width="<?php echo $captcha_width; ?>" height="<?php echo $captcha_height; ?>" scrolling="no" marginheight="0" marginwidth="0" frameborder="0" name="captcha_iframe" src="<?php echo WB_URL.'/include/captcha/captcha.php?display_captcha_X986E21=1'; ?>">

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

						</iframe>

					</td>

					<td>&nbsp;=&nbsp;</td>

					<td><input type="text" name="captcha" maxlength="10" 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 'old_image': // old captcha

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

					<td class="image_captcha">

						<iframe class="captcha_iframe" width="<?php echo $captcha_width; ?>" height="<?php echo $captcha_height; ?>" scrolling="no" marginheight="0" marginwidth="0" frameborder="0" name="captcha_iframe" src="<?php echo WB_URL.'/include/captcha/captcha.php?display_captcha_X986E21=1'; ?>">

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

						</iframe>

					</td>

					<td></td>

					<td><input type="text" name="captcha" maxlength="10" style="width:50px;" /></td>

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

					</tr></table><?php

					break;

			}

		} elseif($action=='image') {

			switch(CAPTCHA_TYPE) {

				case 'text': // text-captcha

				case 'calc_text': // calculation as text

					echo ($style?"<span $style>":'');

					include(WB_PATH.'/include/captcha/captchas/'.CAPTCHA_TYPE.'.php');

					echo ($style?'</span>':'');

					break;

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

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

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

				case 'old_image': // old captcha

					echo "<img $style src=\"".WB_URL.'/include/captcha/captchas/'.CAPTCHA_TYPE.".php?t=$t\" />";

					break;

			}

		} elseif($action=='image_iframe') {

			switch(CAPTCHA_TYPE) {

				case 'text': // text-captcha

					echo ($style?"<span $style>":'');

					include(WB_PATH.'/include/captcha/captchas/'.CAPTCHA_TYPE.'.php');

					echo ($style?'</span>':'');

					break;

				case 'calc_text': // calculation as text

					?><iframe class="captcha_iframe" width="<?php echo $captcha_width; ?>" height="<?php echo $captcha_height; ?>" scrolling="no" marginheight="0" marginwidth="0" frameborder="0" name="captcha_iframe" src="<?php echo WB_URL.'/include/captcha/captcha.php?display_captcha_X986E21=1'; ?>"><?php

					include(WB_PATH.'/include/captcha/captchas/'.CAPTCHA_TYPE.'.php');

					?></iframe><?php

					break;

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

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

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

				case 'old_image': // old captcha

					?><iframe class="captcha_iframe" width="<?php echo $captcha_width; ?>" height="<?php echo $captcha_height; ?>" scrolling="no" marginheight="0" marginwidth="0" frameborder="0" name="captcha_iframe" src="<?php echo WB_URL.'/include/captcha/captcha.php?display_captcha_X986E21=1'; ?>"><?php

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

					?></iframe><?php

					break;

			}

		} elseif($action=='input') {

			switch(CAPTCHA_TYPE) {

				case 'text': // text-captcha

					echo '<input type="text" name="captcha" '.($style?$style:'style="width:150px;" maxlength="50"').' />';

					break;

				case 'calc_text': // calculation as text

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

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

					echo '<input type="text" name="captcha" '.($style?$style:'style="width:20px;" maxlength="10"').' />';

					break;

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

				case 'old_image': // old captcha

					echo '<input type="text" name="captcha" '.($style?$style:'style="width:50px;" maxlength="10"').' />';

					break;

			}

		} elseif($action=='text') {

			echo ($style?"<span $style>":'');

			switch(CAPTCHA_TYPE) {

				case 'text': // text-captcha

					echo $MOD_CAPTCHA['VERIFICATION_INFO_QUEST'];

					break;

				case 'calc_text': // calculation as text

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

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

					echo $MOD_CAPTCHA['VERIFICATION_INFO_RES'];

					break;

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

				case 'old_image': // old captcha

					echo $MOD_CAPTCHA['VERIFICATION_INFO_TEXT'];

					break;

			}

			echo ($style?'</span>':'');

		}

	}

}