vrf: T31: initial support for a VRF backend in XML/Python

This is a work in progress to complete T31 whoever thought it was less than
1 hour of work was ..... optimistic.

Only VRF vreation and show is supported right now. No interface can be bound
to any one VRF.

1 files changed, 29 insertions, 0 deletions

diff --git a/src/validators/interface-name b/src/validators/interface-name
new file mode 100755
index 000000000..49a833f39
--- /dev/null
+++ b/src/validators/interface-name
@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2018 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+#
+
+import sys
+import re
+
+if len(sys.argv) == 2:
+  # https://unix.stackexchange.com/questions/451368/allowed-chars-in-linux-network-interface-names
+  pattern = "^([^/\s]{1,16}$)$"
+  if re.match(pattern, sys.argv[1]):
+    sys.exit(0)
+  else:
+    sys.exit(1)
+