ipsec: T2816: IPSec python rework, includes DMVPN and VTI support

1 files changed, 68 insertions, 0 deletions

diff --git a/src/op_mode/vpn_ike_sa.py b/src/op_mode/vpn_ike_sa.py
new file mode 100755
index 000000000..28da9f8dc
--- /dev/null
+++ b/src/op_mode/vpn_ike_sa.py
@@ -0,0 +1,68 @@
+#!/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/>.
+
+import argparse
+import re
+import vici
+
+ike_sa_peer_prefix = """\
+Peer ID / IP                            Local ID / IP               
+------------                            -------------"""
+
+ike_sa_tunnel_prefix = """
+
+    State  IKEVer  Encrypt      Hash          D-H Group      NAT-T  A-Time  L-Time
+    -----  ------  -------      ----          ---------      -----  ------  ------"""
+
+def s(byte_string):
+    return str(byte_string, 'utf-8')
+
+def ike_sa(peer, nat):
+    session = vici.Session()
+    sas = session.list_sas()
+    peers = []
+    for conn in sas:
+        for name, sa in conn.items():
+            if peer and not name.startswith('peer-' + peer):
+                continue
+            if name.startswith('peer-') and name in peers:
+                continue
+            if nat and 'nat-local' not in sa:
+                continue
+            peers.append(name)
+            remote_str = f'{s(sa["remote-host"])} {s(sa["remote-id"])}' if s(sa['remote-id']) != '%any' else s(sa["remote-host"])
+            local_str = f'{s(sa["local-host"])} {s(sa["local-id"])}' if s(sa['local-id']) != '%any' else s(sa["local-host"])
+            print(ike_sa_peer_prefix)
+            print('%-39s %-39s' % (remote_str, local_str))
+            state = 'up' if 'state' in sa and s(sa['state']) == 'ESTABLISHED' else 'down'
+            version = 'IKEv' + s(sa['version'])
+            encryption = f'{s(sa["encr-alg"])}_{s(sa["encr-keysize"])}' if 'encr-alg' in sa else 'n/a'
+            integrity = s(sa['integ-alg']) if 'integ-alg' in sa else 'n/a'
+            dh_group = s(sa['dh-group']) if 'dh-group' in sa else 'n/a'
+            natt = 'yes' if 'nat-local' in sa and s(sa['nat-local']) == 'yes' else 'no'
+            atime = s(sa['established']) if 'established' in sa else '0'
+            ltime = s(sa['rekey-time']) if 'rekey_time' in sa else '0'
+            print(ike_sa_tunnel_prefix)
+            print('    %-6s %-6s  %-12s %-13s %-14s %-6s %-7s %-7s\n' % (state, version, encryption, integrity, dh_group, natt, atime, ltime))
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--peer', help='Peer name', required=False)
+    parser.add_argument('--nat', help='NAT Traversal', required=False)
+
+    args = parser.parse_args()
+
+    ike_sa(args.peer, args.nat)
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