1 files changed, 57 insertions, 0 deletions
diff --git a/mod/file/thumbnail.php b/mod/file/thumbnail.php
new file mode 100644
index 000000000..851f13a8f
--- /dev/null
+++ b/mod/file/thumbnail.php
@@ -0,0 +1,57 @@
+<?php
+/**
+ * Elgg file thumbnail
+ *
+ * @package ElggFile
+ */
+
+// Get engine
+require_once(dirname(dirname(dirname(__FILE__))) . "/engine/start.php");
+
+// Get file GUID
+$file_guid = (int) get_input('file_guid', 0);
+
+// Get file thumbnail size
+$size = get_input('size', 'small');
+
+$file = get_entity($file_guid);
+if (!$file || $file->getSubtype() != "file") {
+	exit;
+}
+
+$simpletype = $file->simpletype;
+if ($simpletype == "image") {
+
+	// Get file thumbnail
+	switch ($size) {
+		case "small":
+			$thumbfile = $file->thumbnail;
+			break;
+		case "medium":
+			$thumbfile = $file->smallthumb;
+			break;
+		case "large":
+		default:
+			$thumbfile = $file->largethumb;
+			break;
+	}
+
+	// Grab the file
+	if ($thumbfile && !empty($thumbfile)) {
+		$readfile = new ElggFile();
+		$readfile->owner_guid = $file->owner_guid;
+		$readfile->setFilename($thumbfile);
+		$mime = $file->getMimeType();
+		$contents = $readfile->grabFile();
+
+		// caching images for 10 days
+		header("Content-type: $mime");
+		header('Expires: ' . gmdate('D, d M Y H:i:s \G\M\T', strtotime("+10 days")), true);
+		header("Pragma: public", true);
+		header("Cache-Control: public", true);
+		header("Content-Length: " . strlen($contents));
+
+		echo $contents;
+		exit;
+	}
+}