fix XSS on opengraph tags

webcontroller/file_viewer.go

@@ -44,12 +44,12 @@ func adType() int {
 	// Intn returns a number up to n, but never n itself. So to get a random 0
 	// or 1 we need to give it n=2. We can use this function to make other
 	// splits like 1/3 1/4, etc
-	switch i := rand.Intn(8); i {
-	case 0, 1, 2, 3:
+	switch i := rand.Intn(10); i {
+	case 0, 1:
 		return amarulaSolutions
-	case 4, 5:
+	case 2, 3, 4:
 		return adMaven
-	case 6, 7:
+	case 5, 6, 7, 8, 9:
 		return propellerAds
 	default:
 		panic(fmt.Errorf(
@@ -282,7 +282,6 @@ func (wc *WebController) serveSkynetViewer(w http.ResponseWriter, r *http.Reques
 		name = params["filename"]
 	}
 
-	templateData.OGData = ""
 	templateData.Title = fmt.Sprintf("name ~ Skynet")
 	templateData.Other = viewerData{
 		Type:   "skylink",