ipsec: T5043: Rewritten and fixed 'reset vpn' commands

1. Rewritten CLI of 'reset vpn' commands.
2. Created 'reset vpn ipsec remote-access' commands to reset
   RA IKEv2 session.
3. Created 'reset vpn ipsec site-to-site all' command to reset all
   configured IPSec site-to-site peers sessions.
4. Rewritten 'reset vpn l2t|pptp|sstp' commands to
   new opmode style.

1 files changed, 32 insertions, 43 deletions

diff --git a/src/op_mode/reset_vpn.py b/src/op_mode/reset_vpn.py
index 3a0ad941c..46195d6cd 100755
--- a/src/op_mode/reset_vpn.py
+++ b/src/op_mode/reset_vpn.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2019 VyOS maintainers and contributors
+# Copyright (C) 2022-2023 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
@@ -13,60 +13,49 @@
 #
 # 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 argparse
+import typing
 
 from vyos.util import run
 
+import vyos.opmode
+
 cmd_dict = {
-    'cmd_base'  : '/usr/bin/accel-cmd -p {} terminate {} {}',
-    'vpn_types' : {
-        'pptp' : 2003,
-        'l2tp' : 2004,
-        'sstp' : 2005
+    'cmd_base': '/usr/bin/accel-cmd -p {} terminate {} {}',
+    'vpn_types': {
+        'pptp': 2003,
+        'l2tp': 2004,
+        'sstp': 2005
     }
 }
 
-def terminate_sessions(username='', interface='', protocol=''):
 
-    # Reset vpn connections by username
+def reset_conn(protocol: str, username: typing.Optional[str] = None,
+               interface: typing.Optional[str] = None):
     if protocol in cmd_dict['vpn_types']:
-        if username == "all_users":
-            run(cmd_dict['cmd_base'].format(cmd_dict['vpn_types'][protocol], 'all', ''))
-        else:
-            run(cmd_dict['cmd_base'].format(cmd_dict['vpn_types'][protocol], 'username', username))
-
-    # Reset vpn connections by ifname
-    elif interface:
-        for proto in cmd_dict['vpn_types']:
-            run(cmd_dict['cmd_base'].format(cmd_dict['vpn_types'][proto], 'if', interface))
-
-    elif username:
-        # Reset all vpn connections
-        if username == "all_users":
-            for proto in cmd_dict['vpn_types']:
-                run(cmd_dict['cmd_base'].format(cmd_dict['vpn_types'][proto], 'all', ''))
+        # Reset by Interface
+        if interface:
+            run(cmd_dict['cmd_base'].format(cmd_dict['vpn_types'][protocol],
+                                            'if', interface))
+            return
+            # Reset by username
+        if username:
+            run(cmd_dict['cmd_base'].format(cmd_dict['vpn_types'][protocol],
+                                            'username', username))
+        # Reset all
         else:
-            for proto in cmd_dict['vpn_types']:
-                run(cmd_dict['cmd_base'].format(cmd_dict['vpn_types'][proto], 'username', username))
-
-def main():
-    #parese args
-    parser = argparse.ArgumentParser()
-    parser.add_argument('--username', help='Terminate by username (all_users used for disconnect all users)', required=False)
-    parser.add_argument('--interface', help='Terminate by interface', required=False)
-    parser.add_argument('--protocol', help='Set protocol (pptp|l2tp|sstp)', required=False)
-    args = parser.parse_args()
-
-    if args.username or args.interface:
-        terminate_sessions(username=args.username, interface=args.interface, protocol=args.protocol)
+            run(cmd_dict['cmd_base'].format(cmd_dict['vpn_types'][protocol],
+                                            'all',
+                                            ''))
     else:
-        print("Param --username or --interface required")
-        sys.exit(1)
-
-    terminate_sessions()
+        vyos.opmode.IncorrectValue('Unknown VPN Protocol, aborting')
 
 
 if __name__ == '__main__':
-    main()
+    try:
+        res = vyos.opmode.run(sys.modules[__name__])
+        if res:
+            print(res)
+    except (ValueError, vyos.opmode.Error) as e:
+        print(e)
+        sys.exit(1)