2 files changed, 41 insertions, 0 deletions
diff --git a/src/completion/list_ddclient_protocols.sh b/src/completion/list_ddclient_protocols.sh
new file mode 100755
index 000000000..75fb0cf44
--- /dev/null
+++ b/src/completion/list_ddclient_protocols.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+#
+# Copyright (C) 2023 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/>.
+
+echo -n $(ddclient -list-protocols)
diff --git a/src/validators/ddclient-protocol b/src/validators/ddclient-protocol
new file mode 100755
index 000000000..6f927927b
--- /dev/null
+++ b/src/validators/ddclient-protocol
@@ -0,0 +1,24 @@
+#!/bin/sh
+#
+# Copyright (C) 2023 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/>.
+
+ddclient -list-protocols | grep -qw $1
+
+if [ $? -gt 0 ]; then
+    echo "Error: $1 is not a valid protocol, please choose from the supported list of protocols"
+    exit 1
+fi
+
+exit 0