Fix bugs in waiting room.

hall/hall.go

@@ -1201,6 +1201,7 @@ type Status struct {
 	AuthServer        string `json:"authServer,omitempty"`
 	AuthPortal        string `json:"authPortal,omitempty"`
 	Locked            bool   `json:"locked,omitempty"`
+	WaitingRoom       bool   `json:"waitingRoom,omitempty"`
 	Recording         bool   `json:"recording,omitempty"`
 	ClientCount       *int   `json:"clientCount,omitempty"`
 	CanChangePassword bool   `json:"canChangePassword,omitempty"`
@@ -1255,9 +1256,10 @@ func (g *Hall) Status(authentified bool, base *url.URL) Status {
 
 	if authentified || desc.Public {
 		// these are considered private information
-		locked, _ := g.Locked()
+		locked, hasOperator := g.WaitingStatus()
 		count := g.ClientCount()
 		d.Locked = locked
+		d.WaitingRoom = locked && hasOperator
 		d.ClientCount = &count
 	}
 	if authentified {