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<?php
include_once("config.php");
function rescale($image, $maxwidth, $maxheight)
{
$width = imagesx($image);
$height = imagesy($image);
if($width <= $maxwidth && $height <= $maxheight) return $image;
$scale = 1;
if($width > $maxwidth) $scale = $width / $maxwidth;
if($height / $scale > $maxheight) $scale = $height / $maxheight;
$image_p = imagecreatetruecolor($width / $scale, $height / $scale);
imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width / $scale, $height / $scale, $width, $height);
return $image_p;
}
function errorImage($message)
{
header("Content-type: image/png");
$im = @imagecreate(8 + strlen($message) * 5, 20)
or die("Cannot Initialize new GD image stream");
$background_color = imagecolorallocate($im, 0, 0, 0);
$text_color = imagecolorallocate($im, 233, 14, 91);
imagestring($im, 1, 5, 5, $message, $text_color);
imagepng($im);
imagedestroy($im);
}
function getCachedImage($filename, $maxwidth, $maxheight)
{
global $IMAGECACHE, $JPEG_CACHE_QUALITY;
$fullfilename = $IMAGECACHE . "/" . $maxwidth . ":" . $maxheight . ":". urlencode($filename);
// Test the storage dir
if(!file_exists($IMAGECACHE)) {
if(!mkdir($IMAGECACHE)) errorImage("Could not create directory: " . $IMAGECACHE);
}
if(!is_dir($IMAGECACHE)) errorImage($IMAGECACHE . " exists but is not a directory");
if(!is_readable($IMAGECACHE) || !is_writeable($IMAGECACHE) || !is_executable($IMAGECACHE)) {
errorImage($IMAGECACHE . " exists but does not have the correct permissions. (r/w/x)");
}
// end of dir test
if(!file_exists($fullfilename)) {
$url = parse_url($filename);
$filetype = strrchr($url["path"], '.');
if( true || ping($url["hostname"], 1000) != -1) {
error_reporting(E_ERROR | E_PARSE);
switch(strtolower($filetype)) {
case ".jpeg":
case ".jpg":
$image = imagecreatefromjpeg(urldecode($filename));
if(!$image) errorImage("Could not read: ". $filename);
$image = rescale($image, $maxwidth, $maxheight);
imagejpeg($image, $fullfilename, $JPEG_CACHE_QUALITY);
break;
case ".gif":
$image = imagecreatefromgif(urldecode($filename));
if(!$image) errorImage("Could not read: ". $filename);
$image = rescale($image, $maxwidth, $maxheight);
imagegif($image, $fullfilename);
break;
case ".png":
$image = imagecreatefrompng(urldecode($filename));
if(!$image) errorImage("Could not read: ". $filename);
$image = rescale($image, $maxwidth, $maxheight);
imagepng($image, $fullfilename);
break;
default:
if(!$image) errorImage("Unknown image type " . $filetype);
break;
}
error_reporting(E_ALL ^ E_NOTICE);
}
}
header('Content-Description: File Transfer');
header('Content-Type: image/jpeg');
header('Content-Length: ' . filesize($fullfilename));
header('Content-Disposition: inline; filename=' . basename($filename));
header('Last-Modified: ' . date("r", filemtime($fullfilename)));
readfile($fullfilename);
}
?>
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