mirror of
https://github.com/kleeja-official/kleeja.git
synced 2025-12-14 20:19:43 +01:00
108 lines
3.3 KiB
PHP
Executable File
108 lines
3.3 KiB
PHP
Executable File
<?php
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/**
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*
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* @package Kleeja
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* @copyright (c) 2007 Kleeja.net
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* @license ./docs/license.txt
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*
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*/
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// Fix bug with path of font When using versions of the GD library lower than 2.0.18
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if (function_exists('putenv'))
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{
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@putenv('GDFONTPATH=' . realpath('.'));
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}
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elseif (function_exists('ini_set'))
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{
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@ini_set('GDFONTPATH', realpath('.'));
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}
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// When any body request this file , he will see an image ..
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kleeja_cpatcha_image();
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exit();
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//
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//this function will just make an image
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//source : http://webcheatsheet.com/php/create_captcha_protection.php
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//
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function kleeja_cpatcha_image()
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{
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//Let's generate a totally random string using md5
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$md5_hash = md5(rand(0, 999));
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//I think the bad things in captcha is two things, O and 0 , so let's remove zero.
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$security_code = str_replace('0', '', $md5_hash);
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//We don't need a 32 character long string so we trim it down to 5
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$security_code = substr($security_code, 15, 4);
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//Set the session to store the security code
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$_SESSION['klj_sec_code'] = $security_code;
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//Set the image width and height
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$width = 150;
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$height = 25;
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//Generate a random number of lines to make the image dirty
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$lines = rand(3, 5);
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//Create the image resource
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$image = imagecreate($width, $height);
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//We are making three colors, white, black and gray
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$white = imagecolorallocate($image, 255, 255, 255);
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$black = imagecolorallocate($image, rand(0, 100), 0, rand(0, 50));
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$grey = imagecolorallocate($image, 204, 204, 204);
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//Make the background black
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imagefill($image, 0, 0, $black);
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//options
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$x = 10;
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$y = 14;
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$angle = rand(-7, -10);
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//Add randomly generated string in white to the image
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if (function_exists('imagettftext'))
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{
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//
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// We figure a bug that happens when you add font name without './' before it ..
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// he search in the Linux fonts cache , but when you add './' he will know it's our font.
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//
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imagettftext($image, 16, $angle, rand(50, $x), $y+rand(1, 3), $white, dirname(__FILE__) . '/arial.ttf', $security_code);
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//imagettftext ($image, 7, 0, $width-30, $height-4, $white,'./arial.ttf', 'Kleeja');
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}
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else
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{
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imagestring($image, imageloadfont(dirname(__FILE__) . '/arial.gdf'), $x+rand(10, 15), $y-rand(10, 15), $security_code, $white);
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//imagestring ($image, 1, $width-35, $height-10, 'Kleeja', ImageColorAllocate($image, 200, 200, 200));
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}
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//Throw in some lines to make it a little bit harder for any bots to break
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imagerectangle($image, 0, 0, $width-1, $height-1, $grey);
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for ($i=0; $i<$lines; $i++)
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{
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imageline($image, rand(0, $width), rand(0, $height), rand(0, $width), rand(0, $height), $grey);
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}
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//Tell the browser what kind of file is come in and prevent client side caching
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header('Expires: Wed, 1 Jan 1997 00:00:00 GMT');
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header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
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header('Cache-Control: no-store, no-cache, must-revalidate');
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header('Cache-Control: post-check=0, pre-check=0', false);
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header('Pragma: no-cache');
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header('Content-Type: image/png');
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//Output the newly created image in jpeg format
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imagepng($image);
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//Free up resources
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imagedestroy($image);
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}
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//<--- EOF
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