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-rwxr-xr-xsrc/validators/bgp-rd-rt59
1 files changed, 59 insertions, 0 deletions
diff --git a/src/validators/bgp-rd-rt b/src/validators/bgp-rd-rt
new file mode 100755
index 000000000..b2b69c9be
--- /dev/null
+++ b/src/validators/bgp-rd-rt
@@ -0,0 +1,59 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2021 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/>.
+
+from argparse import ArgumentParser
+from vyos.template import is_ipv4
+
+parser = ArgumentParser()
+group = parser.add_mutually_exclusive_group()
+group.add_argument('--route-distinguisher', action='store', help='Validate BGP route distinguisher')
+group.add_argument('--route-target', action='store', help='Validate one BGP route-target')
+group.add_argument('--route-target-multi', action='store', help='Validate multiple, whitespace separated BGP route-targets')
+args = parser.parse_args()
+
+def is_valid(rt):
+ """ Verify BGP RD/RT - both can be verified using the same logic """
+ # every RD/RT (route distinguisher/route target) needs to have a colon and
+ # must consists of two parts
+ value = rt.split(':')
+ if len(value) != 2:
+ return False
+
+ # An RD/RT must either be only numbers, or the first part must be an IPv4
+ # address
+ if (is_ipv4(value[0]) or value[0].isdigit()) and value[1].isdigit():
+ return True
+ return False
+
+if __name__ == '__main__':
+ if args.route_distinguisher:
+ if not is_valid(args.route_distinguisher):
+ exit(1)
+
+ elif args.route_target:
+ if not is_valid(args.route_target):
+ exit(1)
+
+ elif args.route_target_multi:
+ for rt in args.route_target_multi.split(' '):
+ if not is_valid(rt):
+ exit(1)
+
+ else:
+ parser.print_help()
+ exit(1)
+
+ exit(0)