1 files changed, 62 insertions, 0 deletions
diff --git a/forum/htdocs/imagecache.php b/forum/htdocs/imagecache.php
new file mode 100644
index 0000000..f23a51d
--- /dev/null
+++ b/forum/htdocs/imagecache.php
@@ -0,0 +1,62 @@
+<?php
+
+include_once("config.php");
+include_once($UTIL_DIR . "/ping.php");
+
+
+function rescale($image) {
+
+	$maxwidth = 300;
+	$maxheight = 240;
+
+	$width = imagesx($image);
+	$height = imagesy($image);
+
+	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 $image_p;
+}
+
+
+$fullfilename = $IMAGECACHE . "/" . urlencode($filename);
+
+if(!file_exists($fullfilename)) {
+
+	$url = parse_url($filename);
+	$filetype = strrchr($url["path"], '.');
+
+	if( true || ping($url["hostname"], 1000) != -1) {
+
+		if(strcasecmp($filetype, ".jpeg") == 0 || strcasecmp($filetype, ".jpg") == 0) {
+			$image = imagecreatefromjpeg(urldecode($filename));
+			if(!$image) die(404);
+			$image = rescale($image);
+			imagejpeg($image, $fullfilename, 90);
+		} else if(strcasecmp($filetype, ".gif") == 0) {
+			$image = imagecreatefromgif(urldecode($filename));
+			if(!$image) die(404);
+			$image = rescale($image);
+			imagegif($image, $fullfilename);
+		} else if(strcasecmp($filetype, ".png") == 0) {
+			$image = imagecreatefrompng(urldecode($filename));
+			if(!$image) die(404);
+			$image = rescale($image);
+			imagepng($image, $fullfilename);
+		} else {
+			echo "<p>Unknown image format " . $filetype . "</p>";
+		}
+
+	}
+}
+
+header('Content-Description: File Transfer');
+header('Content-Type: image/jpeg');
+header('Content-Length: ' . filesize($fullfilename));
+header('Content-Disposition: inline; filename=' . basename($filename));
+readfile($fullfilename); 
+
+?>
+\ No newline at end of file