TypeScript!

lib/fs.ts

@@ -0,0 +1,55 @@
+/**
+ * Copyright 2013-2018  Zaid Abdulla
+ *
+ * This file is part of GenieACS.
+ *
+ * GenieACS is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * GenieACS 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with GenieACS.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import * as url from "url";
+import * as querystring from "querystring";
+import { GridFSBucket } from "mongodb";
+import * as db from "./db";
+
+export function listener(request, response): void {
+  const urlParts = url.parse(request.url, true);
+  if (request.method === "GET") {
+    const filename = querystring.unescape(urlParts.pathname.substring(1));
+    db.filesCollection.findOne({ _id: filename }, (err, file) => {
+      if (err) {
+        response.writeHead(500, { Connection: "close" });
+        response.end(`${err.name}: ${err.message}`);
+        throw err;
+      }
+
+      if (!file) {
+        response.writeHead(404);
+        response.end();
+        return;
+      }
+
+      response.writeHead(200, {
+        "Content-Type": file.contentType || "application/octet-stream",
+        "Content-Length": file.length
+      });
+
+      const bucket = new GridFSBucket(db.client.db());
+      const downloadStream = bucket.openDownloadStreamByName(filename);
+      downloadStream.pipe(response);
+    });
+  } else {
+    response.writeHead(405, { Allow: "GET" });
+    response.end("405 Method Not Allowed");
+  }
+}