block and wait for answer in dbus-send cmd (with timeout)

Author: infeo

src/main/java/org/cryptomator/linux/revealpath/DBusFileMangerRevealPath.java

@@ -18,13 +18,16 @@ public class DBusFileMangerRevealPath implements RevealPathService {
 
 	private static final String FOR_FOLDERS = "org.freedesktop.FileManager1.ShowFolders";
 	private static final String FOR_FILES = "org.freedesktop.FileManager1.ShowItems";
+	private static final int TIMEOUT_THRESHOLD=5000;
 
 	@Override
 	public void reveal(Path path) throws RevealFailedException {
 		try {
 			var attrs = Files.readAttributes(path, BasicFileAttributes.class, LinkOption.NOFOLLOW_LINKS);
 			var uriPath = Arrays.stream(path.toUri().getPath().split("/")).map(s -> URLEncoder.encode(s, StandardCharsets.UTF_8).replace("+", "%20")).collect(Collectors.joining("/"));
 			ProcessBuilder pb = new ProcessBuilder().command("dbus-send",
+					"--print-reply",
+					"--reply-timeout="+TIMEOUT_THRESHOLD,
 					"--dest=org.freedesktop.FileManager1",
 					"--type=method_call",
 					"/org/freedesktop/FileManager1",
@@ -33,7 +36,7 @@ public void reveal(Path path) throws RevealFailedException {
 					"string:\"\""
 			);
 			var process = pb.start();
-			if (process.waitFor(5000, TimeUnit.MILLISECONDS)) {
+			if (process.waitFor(TIMEOUT_THRESHOLD, TimeUnit.MILLISECONDS)) {
 				int exitValue = process.exitValue();
 				if (exitValue != 0) {
 					throw new RevealFailedException("dbus-send returned with code" + exitValue);