Fix for Torrentflux-b4rt installs in the web root (so with no folder setting).

lib/src/org/transdroid/daemon/Tfb4rt/Tfb4rtAdapter.java

@@ -51,13 +51,10 @@ import com.android.internalcopy.http.multipart.FilePart;
 import com.android.internalcopy.http.multipart.MultipartEntity;
 import com.android.internalcopy.http.multipart.Part;
 
-
 /**
- * An adapter that allows for easy access to Torrentflux-b4rt installs. Communication
- * is handled via HTTP GET requests and XML responses.
- * 
+ * An adapter that allows for easy access to Torrentflux-b4rt installs. Communication is handled via HTTP GET requests
+ * and XML responses.
  * @author erickok
- *
  */
 public class Tfb4rtAdapter implements IDaemonAdapter {
 
@@ -90,19 +87,19 @@ public class Tfb4rtAdapter implements IDaemonAdapter {
 			case Retrieve:
 
 				// Request all torrents from server
-				return new RetrieveTaskSuccessResult((RetrieveTask) task, makeStatsRequest(),null);
+				return new RetrieveTaskSuccessResult((RetrieveTask) task, makeStatsRequest(), null);
 
 			case AddByFile:
 
 				// Add a torrent to the server by sending the contents of a local .torrent file
-				String file = ((AddByFileTask)task).getFile();
+				String file = ((AddByFileTask) task).getFile();
 				makeFileUploadRequest("fileUpload", file);
 				return null;
 
 			case AddByUrl:
 
 				// Request to add a torrent by URL
-				String url = ((AddByUrlTask)task).getUrl();
+				String url = ((AddByUrlTask) task).getUrl();
 				makeActionRequest("urlUpload", url);
 				return new DaemonTaskSuccessResult(task);
 
@@ -110,7 +107,8 @@ public class Tfb4rtAdapter implements IDaemonAdapter {
 
 				// Remove a torrent
 				RemoveTask removeTask = (RemoveTask) task;
-				makeActionRequest((removeTask.includingData()? "deleteWithData": "delete"), task.getTargetTorrent().getUniqueID());
+				makeActionRequest((removeTask.includingData() ? "deleteWithData" : "delete"), task.getTargetTorrent()
+						.getUniqueID());
 				return new DaemonTaskSuccessResult(task);
 
 			case Pause:
@@ -144,7 +142,8 @@ public class Tfb4rtAdapter implements IDaemonAdapter {
 				return null;
 
 			default:
-				return new DaemonTaskFailureResult(task, new DaemonException(ExceptionType.MethodUnsupported, task.getMethod() + " is not supported by " + getType()));
+				return new DaemonTaskFailureResult(task, new DaemonException(ExceptionType.MethodUnsupported,
+						task.getMethod() + " is not supported by " + getType()));
 			}
 		} catch (DaemonException e) {
 			return new DaemonTaskFailureResult(task, e);
@@ -190,7 +189,8 @@ public class Tfb4rtAdapter implements IDaemonAdapter {
 			}
 
 			// Make request
-			HttpGet httpget = new HttpGet(buildWebUIUrl(RPC_URL_DISPATCH + action + RPC_URL_DISPATCH2 + RPC_URL_AID + (action.equals("urlUpload")? RPC_URL_URL: RPC_URL_TRANSFER) + target));
+			HttpGet httpget = new HttpGet(buildWebUIUrl(RPC_URL_DISPATCH + action + RPC_URL_DISPATCH2 + RPC_URL_AID
+					+ (action.equals("urlUpload") ? RPC_URL_URL : RPC_URL_TRANSFER) + target));
 			HttpResponse response = httpclient.execute(httpget);
 
 			// Read response (a successful action always returned '1')
@@ -261,15 +261,22 @@ public class Tfb4rtAdapter implements IDaemonAdapter {
 
 	/**
 	 * Build the URL of specific Torrentflux site request from the user settings and some requested action.
-	 * @param act The action to perform, which is an already build query string without usernmae/password, i.e. dispatcher.php?action=stop&transfer=ubuntu.torrent
-	 * @return The URL of a specific request, i.e. http://localhost:80/turrentflux/dispatcher.php?action=stop&transfer=ubuntu.torrent&username=admin&md5pass=asd98as7d
+	 * @param act The action to perform, which is an already build query string without usernmae/password, i.e.
+	 *            dispatcher.php?action=stop&transfer=ubuntu.torrent
+	 * @return The URL of a specific request, i.e.
+	 *         http://localhost:80/turrentflux/dispatcher.php?action=stop&transfer=ubuntu
+	 *         .torrent&username=admin&md5pass=asd98as7d
 	 */
 	private String buildWebUIUrl(String act) {
-		String folder = settings.getFolder().endsWith("/")? 
-				settings.getFolder().substring(0, settings.getFolder().length() - 1): 
-				settings.getFolder();
-		return (settings.getSsl() ? "https://" : "http://") + settings.getAddress() + ":" + settings.getPort() + 
-			folder + act + RPC_URL_USER + settings.getUsername() + RPC_URL_PASS + md5Pass((settings.getPassword() == null? "": settings.getPassword()));
+		String folder = "";
+		if (settings.getFolder() != null) {
+			folder = settings.getFolder();
+			if (folder.endsWith("/"))
+				folder = folder.substring(0, folder.length() - 1);
+		}
+		return (settings.getSsl() ? "https://" : "http://") + settings.getAddress() + ":" + settings.getPort() + folder
+				+ act + RPC_URL_USER + settings.getUsername() + RPC_URL_PASS
+				+ md5Pass((settings.getPassword() == null ? "" : settings.getPassword()));
 	}
 
 	/**
@@ -281,8 +288,8 @@ public class Tfb4rtAdapter implements IDaemonAdapter {
 		try {
 			MessageDigest m = MessageDigest.getInstance("MD5");
 			byte[] data = pass.getBytes();
-			m.update(data,0,data.length);
-			BigInteger i = new BigInteger(1,m.digest());
+			m.update(data, 0, data.length);
+			BigInteger i = new BigInteger(1, m.digest());
 			return String.format("%1$032X", i);
 		} catch (NoSuchAlgorithmException e) {
 			e.printStackTrace();