now handling empty repo fingerprint during check

- also support icondownloading over bluetooth
- also check for null repoUrl variable

F-Droid/src/org/fdroid/fdroid/RepoUpdater.java

@@ -278,7 +278,7 @@ public class RepoUpdater {
          * actually in the index.jar itself.  If no fingerprint, just store the
          * signing certificate */
         boolean trustNewSigningCertificate = false;
-        if (repo.fingerprint == null) {
+        if (repo.fingerprint == null || repo.fingerprint.length() == 0) {
             // no info to check things are valid, so just Trust On First Use
             trustNewSigningCertificate = true;
         } else {

F-Droid/src/org/fdroid/fdroid/net/IconDownloader.java

@@ -19,13 +19,25 @@ public class IconDownloader extends BaseImageDownloader {
 
     @Override
     public InputStream getStream(String imageUri, Object extra) throws IOException {
-        switch (Scheme.ofUri(imageUri)) {
+
-        case HTTP:
+        Scheme scheme = Scheme.ofUri(imageUri);
-        case HTTPS:
+
+        switch (scheme) {
+            case HTTP:
+            case HTTPS:
+                Downloader downloader = DownloaderFactory.create(context, imageUri);
+                return downloader.getInputStream();
+        }
+
+        //bluetooth isn't a scheme in the Scheme. library, so we can add a check here
+        if (imageUri.toLowerCase().startsWith("bluetooth"))
+        {
             Downloader downloader = DownloaderFactory.create(context, imageUri);
             return downloader.getInputStream();
-        default:
-            return super.getStream(imageUri, extra);
         }
+
+
+        return super.getStream(imageUri, extra);
+
     }
 }

F-Droid/src/org/fdroid/fdroid/views/swap/SwapAppsView.java

@@ -282,7 +282,8 @@ public class SwapAppsView extends ListView implements
                 public void onReceive(Context context, Intent intent) {
                     Apk apk = getApkToInstall();
                     String broadcastUrl = intent.getStringExtra(Downloader.EXTRA_ADDRESS);
-                    if (!TextUtils.equals(Utils.getApkUrl(apk.repoAddress, apk), broadcastUrl)) {
+
+                    if (apk.repoAddress != null && (!TextUtils.equals(Utils.getApkUrl(apk.repoAddress, apk), broadcastUrl))) {
                         return;
                     }