Add DEFAULT_DOWNLOADS variable to set default download count

Fixes https://github.com/timvisee/send/issues/39

server/clientConstants.js

@@ -15,6 +15,7 @@ module.exports = {
     FOOTER_SOURCE_URL: config.footer_source_url
   },
   DEFAULTS: {
+    DOWNLOADS: config.default_downloads,
     DOWNLOAD_COUNTS: config.download_counts,
     EXPIRE_TIMES_SECONDS: config.expire_times_seconds,
     EXPIRE_SECONDS: config.default_expire_seconds

server/config.js

@@ -64,6 +64,11 @@ const conf = convict({
     default: [1, 2, 3, 4, 5, 20, 50, 100],
     env: 'DOWNLOAD_COUNTS'
   },
+  default_downloads: {
+    format: Number,
+    default: 1,
+    env: 'DEFAULT_DOWNLOADS'
+  },
   max_downloads: {
     format: Number,
     default: 100,

server/routes/ws.js

@@ -26,7 +26,7 @@ module.exports = function(ws, req) {
 
       const fileInfo = JSON.parse(message);
       const timeLimit = fileInfo.timeLimit || config.default_expire_seconds;
-      const dlimit = fileInfo.dlimit || 1;
+      const dlimit = fileInfo.dlimit || config.default_downloads;
       const metadata = fileInfo.fileMetadata;
       const auth = fileInfo.authorization;
       const user = await fxa.verify(fileInfo.bearer);