| 1 |
145
|
ryan
|
<?php
|
| 2 |
|
|
|
| 3 |
|
|
// $Id$
|
| 4 |
|
|
|
| 5 |
|
|
/*
|
| 6 |
|
|
|
| 7 |
|
|
Website Baker Project <http://www.websitebaker.org/>
|
| 8 |
|
|
Copyright (C) 2004-2005, Ryan Djurovich
|
| 9 |
|
|
|
| 10 |
|
|
Website Baker is free software; you can redistribute it and/or modify
|
| 11 |
|
|
it under the terms of the GNU General Public License as published by
|
| 12 |
|
|
the Free Software Foundation; either version 2 of the License, or
|
| 13 |
|
|
(at your option) any later version.
|
| 14 |
|
|
|
| 15 |
|
|
Website Baker is distributed in the hope that it will be useful,
|
| 16 |
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 17 |
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 18 |
|
|
GNU General Public License for more details.
|
| 19 |
|
|
|
| 20 |
|
|
You should have received a copy of the GNU General Public License
|
| 21 |
|
|
along with Website Baker; if not, write to the Free Software
|
| 22 |
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
| 23 |
|
|
|
| 24 |
|
|
*/
|
| 25 |
|
|
|
| 26 |
|
|
/*
|
| 27 |
|
|
|
| 28 |
|
|
Captcha generator
|
| 29 |
|
|
|
| 30 |
|
|
This file generates a captcha image.
|
| 31 |
|
|
Credits to http://php.webmaster-kit.com/ for the original code.
|
| 32 |
|
|
|
| 33 |
|
|
*/
|
| 34 |
|
|
|
| 35 |
227
|
ryan
|
require_once("../config.php");
|
| 36 |
152
|
ryan
|
|
| 37 |
227
|
ryan
|
if(extension_loaded('gd') AND function_exists('imageCreateFromJpeg') AND isset($_SESSION['captcha'])) {
|
| 38 |
|
|
|
| 39 |
|
|
$image = imagecreate(120, 30);
|
| 40 |
|
|
|
| 41 |
|
|
$white = imagecolorallocate($image, 0xFF, 0xFF, 0xFF);
|
| 42 |
|
|
$gray = imagecolorallocate($image, 0xC0, 0xC0, 0xC0);
|
| 43 |
|
|
$darkgray = imagecolorallocate($image, 0x50, 0x50, 0x50);
|
| 44 |
|
|
|
| 45 |
|
|
srand((double)microtime()*1000000);
|
| 46 |
|
|
|
| 47 |
|
|
for($i = 0; $i < 30; $i++) {
|
| 48 |
|
|
$x1 = rand(0,120);
|
| 49 |
|
|
$y1 = rand(0,30);
|
| 50 |
|
|
$x2 = rand(0,120);
|
| 51 |
|
|
$y2 = rand(0,30);
|
| 52 |
|
|
imageline($image, $x1, $y1, $x2, $y2 , $gray);
|
| 53 |
|
|
}
|
| 54 |
|
|
|
| 55 |
|
|
for ($i = 0; $i < 5; $i++) {
|
| 56 |
|
|
$fnt = rand(3,5);
|
| 57 |
|
|
$x = $x + rand(12 , 20);
|
| 58 |
|
|
$y = rand(7 , 12);
|
| 59 |
|
|
imagestring($image, $fnt, $x, $y, substr($_SESSION['captcha'], $i, 1), $darkgray);
|
| 60 |
|
|
}
|
| 61 |
|
|
|
| 62 |
287
|
stefan
|
// start buffering for size determination
|
| 63 |
|
|
ob_start();
|
| 64 |
|
|
// add no cache headers
|
| 65 |
|
|
header("Expires: Mon, 1 Jan 1990 05:00:00 GMT");
|
| 66 |
|
|
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
|
| 67 |
|
|
header("Cache-Control: no-store, no-cache, must-revalidate");
|
| 68 |
|
|
header("Cache-Control: post-check=0, pre-check=0", false);
|
| 69 |
|
|
header("Pragma: no-cache");
|
| 70 |
|
|
header("Content-type: image/png");
|
| 71 |
|
|
// Make image
|
| 72 |
227
|
ryan
|
imagepng($image);
|
| 73 |
287
|
stefan
|
// Fetch length
|
| 74 |
|
|
header("Content-Length: " . ob_get_length());
|
| 75 |
|
|
// send image and turn off buffering
|
| 76 |
|
|
ob_end_flush();
|
| 77 |
|
|
// clear memory
|
| 78 |
227
|
ryan
|
imagedestroy($image);
|
| 79 |
287
|
stefan
|
|
| 80 |
145
|
ryan
|
}
|
| 81 |
152
|
ryan
|
|
| 82 |
145
|
ryan
|
?>
|