add oobInfohash flag, filter results by that flag

core/src/main/groovy/com/muwire/core/connection/Connection.groovy

@@ -127,6 +127,7 @@ abstract class Connection implements Closeable {
         query.uuid = e.searchEvent.getUuid()
         query.firstHop = e.firstHop
         query.keywords = e.searchEvent.getSearchTerms()
+        query.oobInfohash = e.searchEvent.oobInfohash
         if (e.searchEvent.searchHash != null)
             query.infohash = Base64.encode(e.searchEvent.searchHash)
         query.replyTo = e.replyTo.toBase64()
@@ -183,10 +184,14 @@ abstract class Connection implements Closeable {
             }
         }
         
+        boolean oob = false
+        if (search.oobInfohash != null)
+            oob = search.oobInfohash
         
         SearchEvent searchEvent = new SearchEvent(searchTerms : search.keywords,
                                             searchHash : infohash,
-                                            uuid : uuid)
+                                            uuid : uuid,
+                                            oobInfohash : oob)
         QueryEvent event = new QueryEvent ( searchEvent : searchEvent,
                                             replyTo : replyTo,
                                             originator : originator,

core/src/main/groovy/com/muwire/core/files/FileManager.groovy

@@ -105,6 +105,7 @@ class FileManager {
 		if (e.searchHash != null) {
             Set<SharedFile> found
             found = rootToFiles.get new InfoHash(e.searchHash)
+            found = filter(found, e.oobInfohash)
 			if (found != null && !found.isEmpty())
 				re = new ResultsEvent(results: found.asList(), uuid: e.uuid)
 		} else {
@@ -113,6 +114,7 @@ class FileManager {
 			names.each { files.addAll nameToFiles.getOrDefault(it, []) }
 			Set<SharedFile> sharedFiles = new HashSet<>()
 			files.each { sharedFiles.add fileToSharedFile[it] }
+            files = filter(sharedFiles, e.oobInfohash)
 			if (!sharedFiles.isEmpty())
 				re = new ResultsEvent(results: sharedFiles.asList(), uuid: e.uuid)
 			
@@ -121,4 +123,15 @@ class FileManager {
 		if (re != null)
 			eventBus.publish(re)
 	}
+    
+    private static Set<SharedFile> filter(Set<SharedFile> files, boolean oob) {
+        if (!oob)
+            return files
+        Set<SharedFile> rv = new HashSet<>()
+        files.each { 
+            if (it.getPieceSize() != 0)
+                rv.add(it)
+        }
+        rv
+    }
 }

core/src/main/groovy/com/muwire/core/search/SearchEvent.groovy

@@ -8,11 +8,12 @@ class SearchEvent extends Event {
 	List<String> searchTerms
 	byte [] searchHash
 	UUID uuid
+    boolean oobInfohash
     
     String toString() {
         def infoHash = null
         if (searchHash != null)
             infoHash = new InfoHash(searchHash)
-        "searchTerms: $searchTerms searchHash:$infoHash, uuid:$uuid"
+        "searchTerms: $searchTerms searchHash:$infoHash, uuid:$uuid oobInfohash:$oobInfohash"
     }
 }

gui/griffon-app/controllers/com/muwire/gui/MainFrameController.groovy

@@ -52,7 +52,7 @@ class MainFrameController {
             // this can be improved a lot
             def replaced = search.toLowerCase().trim().replaceAll(Constants.SPLIT_PATTERN, " ")
             def terms = replaced.split(" ")
-            searchEvent = new SearchEvent(searchTerms : terms, uuid : uuid)
+            searchEvent = new SearchEvent(searchTerms : terms, uuid : uuid, oobInfohash: true)
         }
         core.eventBus.publish(new QueryEvent(searchEvent : searchEvent, firstHop : true, 
             replyTo: core.me.destination, receivedOn: core.me.destination,