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

(cherry picked from commit 26740a8d583f64dc0a27b59dd4ae303056972c0b)

1 files changed, 18 insertions, 38 deletions

diff --git a/src/migration-scripts/openconnect/2-to-3 b/src/migration-scripts/openconnect/2-to-3
index e78fc8a91..00e13ecb0 100755..100644
--- a/src/migration-scripts/openconnect/2-to-3
+++ b/src/migration-scripts/openconnect/2-to-3
@@ -1,50 +1,30 @@
-#!/usr/bin/env python3
+# Copyright 2024 VyOS maintainers and contributors <maintainers@vyos.io>
 #
-# Copyright (C) 2024 VyOS maintainers and contributors
+# 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 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,
+# 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 General Public License for more details.
+# 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 General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# 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/>.
 
 # T4982: Retain prior default TLS version (v1.0) when upgrading installations with existing openconnect configurations
 
-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()
-
-
-config = ConfigTree(config_file)
 cfg_base = ['vpn', 'openconnect']
 
-# bail out early if service is unconfigured
-if not config.exists(cfg_base):
-    sys.exit(0)
-
-# new default is TLS 1.2 - set explicit old default value of TLS 1.0 for upgraded configurations to keep compatibility
-tls_min_path = cfg_base + ['tls-version-min']
-if not config.exists(tls_min_path):
-    config.set(tls_min_path, value='1.0')
+def migrate(config: ConfigTree) -> None:
+    # bail out early if service is unconfigured
+    if not config.exists(cfg_base):
+        return
 
-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)
+    # new default is TLS 1.2 - set explicit old default value of TLS 1.0 for upgraded configurations to keep compatibility
+    tls_min_path = cfg_base + ['tls-version-min']
+    if not config.exists(tls_min_path):
+        config.set(tls_min_path, value='1.0')