1 files changed, 92 insertions, 0 deletions
diff --git a/forum/utils/imagecache.php b/forum/utils/imagecache.php
new file mode 100644
index 0000000..aae5e66
--- /dev/null
+++ b/forum/utils/imagecache.php
@@ -0,0 +1,92 @@
+<?php
+
+include_once("config.php");
+include_once($UTIL_DIR . "/ping.php");
+
+
+function rescale($image) {
+
+	$maxwidth = 300;
+	$maxheight = 240;
+
+	$width = imagesx($image);
+	$height = imagesy($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 $image_p;
+}
+
+function errorImage($filename)
+{
+	/*
+	 header('Content-Description: File Transfer');
+	 header('Content-Type: image/jpeg');
+	 header('Content-Length: ' . filesize($fullfilename));
+	 header('Content-Disposition: inline; filename=' . basename($filename));
+	 readfile($fullfilename); 
+	*/
+	echo "Error fetching image: " . $filename;
+	die(404);
+}
+
+function getCachedImage($filename)
+{
+	global $IMAGECACHE;
+	$fullfilename = $IMAGECACHE . "/" . urlencode($filename);
+
+	if(!file_exists($fullfilename)) {
+
+		$url = parse_url($filename);
+		$filetype = strrchr($url["path"], '.');
+		
+		if( true || ping($url["hostname"], 1000) != -1) {
+			
+			error_reporting(E_ERROR | E_PARSE); 
+
+			switch(tolower($filetype)) {
+			case ".jpeg":
+			case ".jpg":
+				$image = imagecreatefromjpeg(urldecode($filename));
+				if(!$image) errorImage($filename);
+				$image = rescale($image);
+				imagejpeg($image, $fullfilename, 90);
+				break;
+
+			case ".gif":
+				$image = imagecreatefromgif(urldecode($filename));
+				if(!$image) errorImage($filename);
+				$image = rescale($image);
+				imagegif($image, $fullfilename);
+				break;
+
+			case ".png":
+				$image = imagecreatefrompng(urldecode($filename));
+				if(!$image) errorImage($filename);
+				$image = rescale($image);
+				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($filename));
+	readfile($fullfilename); 
+}
+
+?>
+\ No newline at end of file