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<?php
/********************************************************************************
- MemHT Portal -
Copyright (C) 2007-2008 by Miltenovik Manojlo
http://www.memht.com
This program 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 opinion) any later version.
This program 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 this program; if not, see <http://www.gnu.org/licenses/> (GPLv2)
or write to the Free Software Foundation, Inc., 51 Franklin Street,
Fifth Floor, Boston, MA02110-1301, USA.
********************************************************************************/
if (isset($_GET['name']) AND !eregi("[^0-9a-zA-Z_-]",$_GET['name'])) {
$session_name = @$_GET['name'];
header("Content-type: image/png");
$width = 180;
$height = 50;
$im = @imagecreate($width,$height);
$bg = imagecolorallocate($im,255,255,255); //Background
$colorG = imagecolorallocate($im,rand(200,255),rand(200,255),rand(200,255));
$grey = imagecolorallocate($im,180,180,180);
$rx = 0;
//Common bg
for ($a=0;$a<=5;$a++) {
$rx += 35;
$x = $rx+rand(-10,5);
if ($x>145) { $x = 145; }
$y = rand(30,60);
$color = imagecolorallocate($im,rand(100,200),rand(100,200),rand(100,200));
imageline($im,rand(0,179),rand(0,49),rand(0,179),rand(0,49),$color);
imageline($im,rand(0,179),rand(0,49),rand(0,179),rand(0,49),$color);
imageline($im,rand(0,179),rand(0,49),rand(0,179),rand(0,49),$color);
}
$gdinfo = @gd_info();
if ($gdinfo['FreeType Support']) {
$chars = array();
for ($i=1;$i<=5;$i++) { $chars[] = randStr(1); }
//Bg
$rx = -20;
foreach ($chars as $ch) {
$rx += 35;
$x = $rx+rand(-10,5);
if ($x>145) { $x = 145; }
$y = rand(30,60);
$size = rand(20,70);
$angle = rand(-20,20);
$font = "inc/fonts/1.ttf";
imagettftext($im,$size+rand(-20,20),$angle+rand(-20,20),$x+rand(-20,20),$y+rand(-20,20),$colorG,$font,$ch);
}
//Text
$chars = array();
for ($i=1;$i<=5;$i++) { $chars[] = randStr(1); }
$text = "";
$rx = -20;
foreach ($chars as $ch) {
$rx += 35;
$x = $rx+rand(-10,5);
if ($x>145) { $x = 145; }
$y = 45;
$size = rand(30,50);
$angle = rand(-20,20);
$text .= $ch;
$font = "inc/fonts/1.ttf";
$color = imagecolorallocate($im,rand(0,200),rand(0,200),rand(0,200));
imagettftext($im,$size,$angle,$x,$y,$color,$font,$ch);
}
} else {
//Text
$chars = array();
for ($i=1;$i<=5;$i++) { $chars[] = randStr(1); }
$text = "";
$rx = -20;
foreach ($chars as $ch) {
$rx += 35;
$x = $rx+rand(-10,5);
if ($x>170) { $x = 170; }
$y = rand(1,25);
$text .= $ch;
$color = imagecolorallocate($im,rand(0,200),rand(0,200),rand(0,200));
imagestring($im,5,$x-1,$y-1,$ch,$white);
imagestring($im,5,$x+1,$y+1,$ch,$white);
imagestring($im,5,$x,$y,$ch,$color);
}
imagestring($im, 3, 66, 36,"FailSafe CAPTCHA", $bg);
imagestring($im, 3, 67, 37,"FailSafe CAPTCHA", $grey);
}
imagerectangle($im,0,0,179,49,$grey);
//---------------------------------------------
@session_start();
$_SESSION[$session_name] = $text;
//---------------------------------------------
imagepng($im);
imagedestroy($im);
}
function randStr($length) {
$key = "";
$pattern = "23456789AbCdEFgHikLmNPqRsTuVwXyZ";
for($i=0;$i<$length;$i++) {
$key .= $pattern{rand(0,31)};
}
return $key;
}
?>
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