sstp: T4384: initial implementation of SSTP client CLI

vyos@vyos# show interfaces sstpc
 sstpc sstpc10 {
     authentication {
         password vyos
         user vyos
     }
     server sstp.vyos.net
     ssl {
         ca-certificate VyOS-CA
     }
 }

1 files changed, 40 insertions, 0 deletions

diff --git a/python/vyos/ifconfig/sstpc.py b/python/vyos/ifconfig/sstpc.py
new file mode 100644
index 000000000..50fc6ee6b
--- /dev/null
+++ b/python/vyos/ifconfig/sstpc.py
@@ -0,0 +1,40 @@
+# Copyright 2022 VyOS maintainers and contributors <maintainers@vyos.io>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+
+from vyos.ifconfig.interface import Interface
+
+@Interface.register
+class SSTPCIf(Interface):
+    iftype = 'sstpc'
+    definition = {
+        **Interface.definition,
+        **{
+            'section': 'sstpc',
+            'prefixes': ['sstpc', ],
+            'eternal': 'sstpc[0-9]+$',
+        },
+    }
+
+    def _create(self):
+        # we can not create this interface as it is managed outside
+        pass
+
+    def _delete(self):
+        # we can not create this interface as it is managed outside
+        pass
+
+    def get_mac(self):
+        """ Get a synthetic MAC address. """
+        return self.get_mac_synthetic()