Floss: socket: Reject listening with the same service record

Bug: 296819230
Tag: #floss
Test: Manually register the same UUID twice, the later is rejected
Test: mmm packages/modules/Bluetooth
Change-Id: I0421c808c8d165f9b56775cfbc32b02b04911582

system/gd/rust/linux/stack/src/socket_manager.rs

@@ -575,6 +575,14 @@ impl BluetoothSocketManager {
                 log::debug!("service {} is blocked by admin policy", uuid);
                 return SocketResult::new(BtStatus::AuthRejected, INVALID_SOCKET_ID);
             }
+            if self
+                .listening
+                .iter()
+                .any(|(_, v)| v.iter().any(|s| s.uuid.map_or(false, |u| u == uuid)))
+            {
+                log::warn!("Service {} already exists", uuid);
+                return SocketResult::new(BtStatus::Fail, INVALID_SOCKET_ID);
+            }
         }
 
         // Create listener socket pair