accelerate lookup in non-concatenated pools

src/charon/plugins/sql/sql_attribute.c

@@ -224,8 +224,25 @@ static host_t* acquire_address(private_sql_attribute_t *this,
 	identity = get_identity(this, id);
 	if (identity)
 	{
-		char *name;
+		/* check for a single pool first (no concatenation and enumeration) */
+		if (strchr(names, ',') == NULL)
+		{
+			pool = get_pool(this, names, &timeout);
+			if (pool)
+			{
+				/* check for an existing lease */
+				address = check_lease(this, names, pool, identity);
+				if (address == NULL)
+				{
+					/* get an unallocated address or expired lease */
+					address = get_lease(this, names, pool, timeout, identity);
+				}
+			}
+		}
+		else
+		{
 			enumerator_t *enumerator;
+			char *name;
 
 			/* in a first step check for an existing lease over all pools */
 			enumerator = enumerator_create_token(names, ",", " ");
@@ -260,6 +277,7 @@ static host_t* acquire_address(private_sql_attribute_t *this,
 			}
 			enumerator->destroy(enumerator);
 		}
+	}
 	return address;
 }