fsm: Add object_path parsing functions

- __ni_fsm_dbus_objectpath_to_ifindex
- __ni_fsm_dbus_objectpath_to_name

src/fsm.c

@@ -593,6 +593,53 @@ ni_ifworker_array_remove_with_children(ni_ifworker_array_t *array, ni_ifworker_t
 	}
 }
 
+static unsigned int
+__ni_fsm_dbus_objectpath_to_ifindex(const char *object_path)
+{
+	ni_string_array_t nsa = NI_STRING_ARRAY_INIT;
+	unsigned int ifindex = 0;
+
+	if (ni_string_empty(object_path))
+		goto done;
+
+	if (!ni_string_split(&nsa, object_path, "/", 0)) {
+		ni_error("unable to parse object_path=%s", object_path);
+		goto done;
+	}
+
+	if (ni_parse_uint(nsa.data[nsa.count-1], &ifindex, 10) < 0) {
+		ni_error("wrong ifindex value in object_path=%s", object_path);
+		goto done;
+	}
+
+done:
+	ni_string_array_destroy(&nsa);
+	return ifindex;
+}
+
+/*
+ * __ni_dbus_objectpath_to_name() allocates a string and return interface name
+ */
+static char *
+__ni_fsm_dbus_objectpath_to_name(const char *object_path)
+{
+	char buf[IF_NAMESIZE+1] = { 0 };
+	unsigned int ifindex;
+	char *ifname = NULL;
+
+	if (ni_string_empty(object_path))
+		return NULL;;
+
+	ifindex = __ni_fsm_dbus_objectpath_to_ifindex(object_path);
+	if (!if_indextoname(ifindex, buf)) {
+		ni_error("unable to get ifname from ifindex=%d", ifindex);
+		return NULL;
+	}
+
+	ni_string_dup(&ifname, buf);
+	return ifname;
+}
+
 ni_ifworker_t *
 ni_fsm_ifworker_by_name(ni_fsm_t *fsm, ni_ifworker_type_t type, const char *ifname)
 {