migration: T6007: convert all migration scripts to load as module

(cherry picked from commit 26740a8d583f64dc0a27b59dd4ae303056972c0b)

1 files changed, 18 insertions, 24 deletions

diff --git a/src/migration-scripts/openvpn/0-to-1 b/src/migration-scripts/openvpn/0-to-1
index 24bb38d3c..e5db731ed 100755..100644
--- a/src/migration-scripts/openvpn/0-to-1
+++ b/src/migration-scripts/openvpn/0-to-1
@@ -1,26 +1,27 @@
-#!/usr/bin/env python3
+# Copyright 2023-2024 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/>.
 
 # Removes outdated ciphers (DES and Blowfish) from OpenVPN configs
 
-import sys
-
 from vyos.configtree import ConfigTree
 
-if len(sys.argv) < 2:
-    print("Must specify file name!")
-    sys.exit(1)
-
-file_name = sys.argv[1]
-
-with open(file_name, 'r') as f:
-    config_file = f.read()
+def migrate(config: ConfigTree) -> None:
+    if not config.exists(['interfaces', 'openvpn']):
+        # Nothing to do
+        return
 
-config = ConfigTree(config_file)
-
-if not config.exists(['interfaces', 'openvpn']):
-    # Nothing to do
-    sys.exit(0)
-else:
     ovpn_intfs = config.list_nodes(['interfaces', 'openvpn'])
     for	i in ovpn_intfs:
         # Remove DES and Blowfish from 'encryption cipher'
@@ -40,10 +41,3 @@ else:
         if config.exists(['interfaces', 'openvpn', i, 'encryption']) and \
            (config.list_nodes(['interfaces', 'openvpn', i, 'encryption']) == []):
             config.delete(['interfaces', 'openvpn', i, 'encryption'])
-
-    try:
-        with open(file_name, 'w') as f:
-            f.write(config.to_string())
-    except OSError as e:
-        print("Failed to save the modified config: {}".format(e))
-        sys.exit(1)