Deskbar: Sanitize the usage of BMessage

... especially for SendMessage and SendReply.
* Delete the item's message if AddItem does not return successfully.
* Fixes #11934.

Signed-off-by: Adrien Destugues <pulkomandy@gmail.com>

src/apps/deskbar/BarView.cpp

@@ -263,7 +263,8 @@ TBarView::MessageReceived(BMessage* message)
 			// so that I can follow the common pathway
 			// for adding icons to the tray
 			int32 id;
-			AddItem(new BMessage(*message), B_DESKBAR_TRAY, &id);
+			if (AddItem(message, B_DESKBAR_TRAY, &id) == B_OK)
+				Looper()->DetachCurrentMessage();
 			break;
 		}
 

src/apps/deskbar/BarWindow.cpp

@@ -39,6 +39,7 @@ All rights reserved.
 #include <stdio.h>
 
 #include <Application.h>
+#include <AutoDeleter.h>
 #include <Catalog.h>
 #include <Directory.h>
 #include <FindDirectory.h>
@@ -516,15 +517,18 @@ TBarWindow::AddItem(BMessage* message)
 	BMessage reply;
 	status_t err = B_ERROR;
 
-	BMessage archivedView;
-	if (message->FindMessage("view", &archivedView) == B_OK) {
+	BMessage* archivedView = new BMessage();
+	ObjectDeleter<BMessage> deleter(archivedView);
+	if (message->FindMessage("view", archivedView) == B_OK) {
 #if SHELF_AWARE
 		message->FindInt32("shelf", &shelf);
 #endif
-		BMessage* archive = new BMessage(archivedView);
-		err = fBarView->AddItem(archive, shelf, &id);
-		if (err < B_OK)
-			delete archive;
+		err = fBarView->AddItem(archivedView, shelf, &id);
+		if (err == B_OK) {
+			// Detach the deleter since AddReplicant is taking ownership
+			// on success. This should be changed on server side.
+			deleter.Detach();
+		}
 	} else if (message->FindRef("addon", &ref) == B_OK) {
 		BEntry entry(&ref);
 		err = entry.InitCheck();

src/apps/deskbar/StatusView.cpp

@@ -337,12 +337,12 @@ TReplicantTray::MessageReceived(BMessage* message)
 			bool showDayOfWeek = fTime->ShowDayOfWeek();
 			bool showTimeZone = fTime->ShowTimeZone();
 
-			BMessage* reply = new BMessage(kGetClockSettings);
-			reply->AddBool("showClock", showClock);
-			reply->AddBool("showSeconds", showSeconds);
-			reply->AddBool("showDayOfWeek", showDayOfWeek);
-			reply->AddBool("showTimeZone", showTimeZone);
-			message->SendReply(reply);
+			BMessage reply(kGetClockSettings);
+			reply.AddBool("showClock", showClock);
+			reply.AddBool("showSeconds", showSeconds);
+			reply.AddBool("showDayOfWeek", showDayOfWeek);
+			reply.AddBool("showTimeZone", showTimeZone);
+			message->SendReply(&reply);
 			break;
 		}
 
@@ -451,9 +451,9 @@ TReplicantTray::ShowHideTime()
 
 	// Send a message to Time preferences telling it to update
 	BMessenger messenger("application/x-vnd.Haiku-Time");
-	BMessage* message = new BMessage(kShowHideTime);
-	message->AddBool("showClock", showClock);
-	messenger.SendMessage(message);
+	BMessage message(kShowHideTime);
+	message.AddBool("showClock", showClock);
+	messenger.SendMessage(&message);
 }
 
 
@@ -673,8 +673,9 @@ TReplicantTray::LoadAddOn(BEntry* entry, int32* id, bool addToSettings)
 	view->Archive(data);
 	delete view;
 
-	AddIcon(data, id, &ref);
-		// add the rep; adds info to list
+	// add the rep; adds info to list
+	if (AddIcon(data, id, &ref) != B_OK)
+		delete data;
 
 	if (addToSettings) {
 		fAddOnSettings.AddString(kReplicantPathField, path.Path());

src/apps/deskbar/TimeView.cpp

@@ -195,8 +195,8 @@ TTimeView::MessageReceived(BMessage* message)
 			be_roster->Launch("application/x-vnd.Haiku-Time");
 			// tell Time preflet to switch to the clock tab
 			BMessenger messenger("application/x-vnd.Haiku-Time");
-			BMessage* switchToClock = new BMessage('SlCk');
-			messenger.SendMessage(switchToClock);
+			BMessage switchToClock('SlCk');
+			messenger.SendMessage(&switchToClock);
 			break;
 		}
 

src/kits/interface/Shelf.cpp

@@ -16,6 +16,7 @@
 
 #include <pthread.h>
 
+#include <AutoDeleter.h>
 #include <AutoLock.h>
 #include <Beep.h>
 #include <Dragger.h>
@@ -1178,13 +1179,19 @@ BShelf::_InitData(BEntry *entry, BDataIO *stream, BView *view,
 				genCount = 1;
 
 			BMessage replicant;
-			BMessage *replmsg = NULL;
-			for (int32 i = 0; archive.FindMessage("replicant", i, &replicant) == B_OK; i++) {
+			for (int32 i = 0; archive.FindMessage("replicant", i, &replicant)
+				== B_OK; i++) {
 				BPoint point;
-				replmsg = new BMessage();
+				BMessage *replMsg = new BMessage();
+				ObjectDeleter<BMessage> deleter(replMsg);
 				replicant.FindPoint("position", &point);
-				replicant.FindMessage("message", replmsg);
-				AddReplicant(replmsg, point);
+				if (replicant.FindMessage("message", replMsg) == B_OK)
+					if (AddReplicant(replMsg, point) == B_OK) {
+						// Detach the deleter since AddReplicant is taking
+						// ownership on success. In R2 API this should be
+						// changed to take always ownership on the message.
+						deleter.Detach();
+					}
 			}
 		}
 	}