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

(cherry picked from commit 26740a8d583f64dc0a27b59dd4ae303056972c0b)

9 files changed, 364 insertions, 533 deletions

diff --git a/src/migration-scripts/ipsec/10-to-11 b/src/migration-scripts/ipsec/10-to-11
index 509216267..6c4ccb553 100755..100644
--- a/src/migration-scripts/ipsec/10-to-11
+++ b/src/migration-scripts/ipsec/10-to-11
@@ -1,83 +1,63 @@
-#!/usr/bin/env python3
+# Copyright 2023-2024 VyOS maintainers and contributors <maintainers@vyos.io>
 #
-# Copyright (C) 2023 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/>.
 
-from sys import argv
-from sys import exit
+# T4916: Rewrite IPsec peer authentication and psk migration
 
 from vyos.configtree import ConfigTree
 
-
-if len(argv) < 2:
-    print("Must specify file name!")
-    exit(1)
-
-file_name = argv[1]
-
-with open(file_name, 'r') as f:
-    config_file = f.read()
-
 base = ['vpn', 'ipsec']
-config = ConfigTree(config_file)
-
-if not config.exists(base):
-    # Nothing to do
-    exit(0)
-
-# PEER changes
-if config.exists(base + ['site-to-site', 'peer']):
-    for peer in config.list_nodes(base + ['site-to-site', 'peer']):
-        peer_base = base + ['site-to-site', 'peer', peer]
-
-        # replace: 'ipsec site-to-site peer <tag> authentication pre-shared-secret xxx'
-        #       => 'ipsec authentication psk <tag> secret xxx'
-        if config.exists(peer_base + ['authentication', 'pre-shared-secret']):
-            tmp = config.return_value(peer_base + ['authentication', 'pre-shared-secret'])
-            config.delete(peer_base + ['authentication', 'pre-shared-secret'])
-            config.set(base + ['authentication', 'psk', peer, 'secret'], value=tmp)
-            # format as tag node to avoid loading problems
-            config.set_tag(base + ['authentication', 'psk'])
-
-            # Get id's from peers for "ipsec auth psk <tag> id xxx"
-            if config.exists(peer_base + ['authentication', 'local-id']):
-                local_id = config.return_value(peer_base + ['authentication', 'local-id'])
-                config.set(base + ['authentication', 'psk', peer, 'id'], value=local_id, replace=False)
-            if config.exists(peer_base + ['authentication', 'remote-id']):
-                remote_id = config.return_value(peer_base + ['authentication', 'remote-id'])
-                config.set(base + ['authentication', 'psk', peer, 'id'], value=remote_id, replace=False)
-
-            if config.exists(peer_base + ['local-address']):
-                tmp = config.return_value(peer_base + ['local-address'])
-                config.set(base + ['authentication', 'psk', peer, 'id'], value=tmp, replace=False)
-            if config.exists(peer_base + ['remote-address']):
-                tmp = config.return_values(peer_base + ['remote-address'])
-                if tmp:
-                    for remote_addr in tmp:
-                        if remote_addr == 'any':
-                            remote_addr = '%any'
-                        config.set(base + ['authentication', 'psk', peer, 'id'], value=remote_addr, replace=False)
-
-            # get DHCP peer interface as psk dhcp-interface
-            if config.exists(peer_base + ['dhcp-interface']):
-                tmp = config.return_value(peer_base + ['dhcp-interface'])
-                config.set(base + ['authentication', 'psk', peer, 'dhcp-interface'], value=tmp)
-
 
-try:
-    with open(file_name, 'w') as f:
-        f.write(config.to_string())
-except OSError as e:
-    print(f'Failed to save the modified config: {e}')
-    exit(1)
+def migrate(config: ConfigTree) -> None:
+    if not config.exists(base):
+        # Nothing to do
+        return
+
+    # PEER changes
+    if config.exists(base + ['site-to-site', 'peer']):
+        for peer in config.list_nodes(base + ['site-to-site', 'peer']):
+            peer_base = base + ['site-to-site', 'peer', peer]
+
+            # replace: 'ipsec site-to-site peer <tag> authentication pre-shared-secret xxx'
+            #       => 'ipsec authentication psk <tag> secret xxx'
+            if config.exists(peer_base + ['authentication', 'pre-shared-secret']):
+                tmp = config.return_value(peer_base + ['authentication', 'pre-shared-secret'])
+                config.delete(peer_base + ['authentication', 'pre-shared-secret'])
+                config.set(base + ['authentication', 'psk', peer, 'secret'], value=tmp)
+                # format as tag node to avoid loading problems
+                config.set_tag(base + ['authentication', 'psk'])
+
+                # Get id's from peers for "ipsec auth psk <tag> id xxx"
+                if config.exists(peer_base + ['authentication', 'local-id']):
+                    local_id = config.return_value(peer_base + ['authentication', 'local-id'])
+                    config.set(base + ['authentication', 'psk', peer, 'id'], value=local_id, replace=False)
+                if config.exists(peer_base + ['authentication', 'remote-id']):
+                    remote_id = config.return_value(peer_base + ['authentication', 'remote-id'])
+                    config.set(base + ['authentication', 'psk', peer, 'id'], value=remote_id, replace=False)
+
+                if config.exists(peer_base + ['local-address']):
+                    tmp = config.return_value(peer_base + ['local-address'])
+                    config.set(base + ['authentication', 'psk', peer, 'id'], value=tmp, replace=False)
+                if config.exists(peer_base + ['remote-address']):
+                    tmp = config.return_values(peer_base + ['remote-address'])
+                    if tmp:
+                        for remote_addr in tmp:
+                            if remote_addr == 'any':
+                                remote_addr = '%any'
+                            config.set(base + ['authentication', 'psk', peer, 'id'], value=remote_addr, replace=False)
+
+                # get DHCP peer interface as psk dhcp-interface
+                if config.exists(peer_base + ['dhcp-interface']):
+                    tmp = config.return_value(peer_base + ['dhcp-interface'])
+                    config.set(base + ['authentication', 'psk', peer, 'dhcp-interface'], value=tmp)
diff --git a/src/migration-scripts/ipsec/11-to-12 b/src/migration-scripts/ipsec/11-to-12
index 4833d0876..fc65f1825 100755..100644
--- a/src/migration-scripts/ipsec/11-to-12
+++ b/src/migration-scripts/ipsec/11-to-12
@@ -1,51 +1,31 @@
-#!/usr/bin/env python3
+# Copyright 2023-2024 VyOS maintainers and contributors <maintainers@vyos.io>
 #
-# Copyright (C) 2023-2024 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/>.
 
 # Remove legacy ipsec.conf and ipsec.secrets - Not supported with swanctl
 
-from sys import argv
-from sys import exit
-
 from vyos.configtree import ConfigTree
 
-if len(argv) < 2:
-    print("Must specify file name!")
-    exit(1)
-
-file_name = argv[1]
-
-with open(file_name, 'r') as f:
-    config_file = f.read()
-
 base = ['vpn', 'ipsec']
-config = ConfigTree(config_file)
-
-if not config.exists(base):
-    # Nothing to do
-    exit(0)
 
-if config.exists(base + ['include-ipsec-conf']):
-    config.delete(base + ['include-ipsec-conf'])
+def migrate(config: ConfigTree) -> None:
+    if not config.exists(base):
+        # Nothing to do
+        return
 
-if config.exists(base + ['include-ipsec-secrets']):
-    config.delete(base + ['include-ipsec-secrets'])
+    if config.exists(base + ['include-ipsec-conf']):
+        config.delete(base + ['include-ipsec-conf'])
 
-try:
-    with open(file_name, 'w') as f:
-        f.write(config.to_string())
-except OSError as e:
-    print(f'Failed to save the modified config: {e}')
-    exit(1)
+    if config.exists(base + ['include-ipsec-secrets']):
+        config.delete(base + ['include-ipsec-secrets'])
diff --git a/src/migration-scripts/ipsec/12-to-13 b/src/migration-scripts/ipsec/12-to-13
index d90c70314..ffe766eb2 100755..100644
--- a/src/migration-scripts/ipsec/12-to-13
+++ b/src/migration-scripts/ipsec/12-to-13
@@ -1,43 +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/>.
 
 # Changed value of dead-peer-detection.action from hold to trap
 # Changed value of close-action from hold to trap and from restart to start
 
-from sys import argv
-from sys import exit
-
 from vyos.configtree import ConfigTree
 
-if len(argv) < 2:
-    print("Must specify file name!")
-    exit(1)
-
-file_name = argv[1]
-
-with open(file_name, 'r') as f:
-    config_file = f.read()
-
 base = ['vpn', 'ipsec', 'ike-group']
-config = ConfigTree(config_file)
 
-if not config.exists(base):
-    # Nothing to do
-    exit(0)
-else:
+def migrate(config: ConfigTree) -> None:
+    if not config.exists(base):
+        # Nothing to do
+        return
+
     for ike_group in config.list_nodes(base):
         base_dpd_action = base + [ike_group, 'dead-peer-detection', 'action']
         base_close_action = base + [ike_group, 'close-action']
@@ -48,10 +35,3 @@ else:
                 config.set(base_close_action, 'trap', replace=True)
             if config.return_value(base_close_action) == 'restart':
                 config.set(base_close_action, 'start', replace=True)
-
-try:
-    with open(file_name, 'w') as f:
-        f.write(config.to_string())
-except OSError as e:
-    print(f'Failed to save the modified config: {e}')
-    exit(1)
diff --git a/src/migration-scripts/ipsec/4-to-5 b/src/migration-scripts/ipsec/4-to-5
index 772d05787..a88a543d3 100755..100644
--- a/src/migration-scripts/ipsec/4-to-5
+++ b/src/migration-scripts/ipsec/4-to-5
@@ -1,47 +1,28 @@
-#!/usr/bin/env python3
+# Copyright 2019-2024 VyOS maintainers and contributors <maintainers@vyos.io>
 #
-# Copyright (C) 2019 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/>.
 
 # log-modes have changed, keyword  all to any
 
-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()
-
-ctree = ConfigTree(config_file)
-
-if not ctree.exists(['vpn', 'ipsec', 'logging','log-modes']):
-    # Nothing to do
-    sys.exit(0)
-else:
-  lmodes = ctree.return_values(['vpn', 'ipsec', 'logging','log-modes'])
-  for mode in lmodes:
-    if mode == 'all':
-      ctree.set(['vpn', 'ipsec', 'logging','log-modes'], value='any', replace=True)
+def migrate(config: ConfigTree) -> None:
+    if not config.exists(['vpn', 'ipsec', 'logging','log-modes']):
+        # Nothing to do
+        return
 
-  try:
-    open(file_name,'w').write(ctree.to_string())
-  except OSError as e:
-    print("Failed to save the modified config: {}".format(e))
-    sys.exit(1)
+    lmodes = config.return_values(['vpn', 'ipsec', 'logging','log-modes'])
+    for mode in lmodes:
+        if mode == 'all':
+            config.set(['vpn', 'ipsec', 'logging','log-modes'], value='any', replace=True)
diff --git a/src/migration-scripts/ipsec/5-to-6 b/src/migration-scripts/ipsec/5-to-6
index 7d7c777c6..373428d61 100755..100644
--- a/src/migration-scripts/ipsec/5-to-6
+++ b/src/migration-scripts/ipsec/5-to-6
@@ -1,93 +1,73 @@
-#!/usr/bin/env python3
+# Copyright 2021-2024 VyOS maintainers and contributors <maintainers@vyos.io>
 #
-# Copyright (C) 2021 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/>.
 
 # Remove deprecated strongSwan options from VyOS CLI
 # - vpn ipsec nat-traversal enable
 # - vpn ipsec nat-networks allowed-network
 
-from sys import argv
-from sys import exit
-
 from vyos.configtree import ConfigTree
 
-if len(argv) < 2:
-    print("Must specify file name!")
-    exit(1)
-
-file_name = argv[1]
-
-with open(file_name, 'r') as f:
-    config_file = f.read()
-
 base = ['vpn', 'ipsec']
-config = ConfigTree(config_file)
-
-if not config.exists(base):
-    # Nothing to do
-    exit(0)
-
-# Delete CLI nodes whose config options got removed by strongSwan
-for cli_node in ['nat-traversal', 'nat-networks']:
-    if config.exists(base + [cli_node]):
-        config.delete(base + [cli_node])
-
-# Remove options only valid in Openswan
-if config.exists(base + ['site-to-site', 'peer']):
-    for peer in config.list_nodes(base + ['site-to-site', 'peer']):
-        if not config.exists(base + ['site-to-site', 'peer', peer, 'tunnel']):
-            continue
-        for tunnel in config.list_nodes(base + ['site-to-site', 'peer', peer, 'tunnel']):
-            # allow-public-networks - Sets a value in ipsec.conf that was only ever valid in Openswan on kernel 2.6
-            nat_networks = base + ['site-to-site', 'peer', peer, 'tunnel', tunnel, 'allow-nat-networks']
-            if config.exists(nat_networks):
-                config.delete(nat_networks)
-
-            # allow-nat-networks - Also sets a value only valid in Openswan
-            public_networks = base + ['site-to-site', 'peer', peer, 'tunnel', tunnel, 'allow-public-networks']
-            if config.exists(public_networks):
-                config.delete(public_networks)
-
-# Rename "logging log-level" and "logging log-modes" to something more human friendly
-log = base + ['logging']
-if config.exists(log):
-    config.rename(log, 'log')
-    log = base + ['log']
-
-log_level = log + ['log-level']
-if config.exists(log_level):
-    config.rename(log_level, 'level')
-
-log_mode = log + ['log-modes']
-if config.exists(log_mode):
-    config.rename(log_mode, 'subsystem')
-
-# Rename "ipsec-interfaces interface" to "interface"
-base_interfaces = base + ['ipsec-interfaces', 'interface']
-if config.exists(base_interfaces):
-    config.copy(base_interfaces, base + ['interface'])
-    config.delete(base + ['ipsec-interfaces'])
-
-# Remove deprecated "auto-update" option
-tmp = base + ['auto-update']
-if config.exists(tmp):
-    config.delete(tmp)
 
-try:
-    with open(file_name, 'w') as f:
-        f.write(config.to_string())
-except OSError as e:
-    print(f'Failed to save the modified config: {e}')
-    exit(1)
+def migrate(config: ConfigTree) -> None:
+    if not config.exists(base):
+        # Nothing to do
+        return
+
+    # Delete CLI nodes whose config options got removed by strongSwan
+    for cli_node in ['nat-traversal', 'nat-networks']:
+        if config.exists(base + [cli_node]):
+            config.delete(base + [cli_node])
+
+    # Remove options only valid in Openswan
+    if config.exists(base + ['site-to-site', 'peer']):
+        for peer in config.list_nodes(base + ['site-to-site', 'peer']):
+            if not config.exists(base + ['site-to-site', 'peer', peer, 'tunnel']):
+                continue
+            for tunnel in config.list_nodes(base + ['site-to-site', 'peer', peer, 'tunnel']):
+                # allow-public-networks - Sets a value in ipsec.conf that was only ever valid in Openswan on kernel 2.6
+                nat_networks = base + ['site-to-site', 'peer', peer, 'tunnel', tunnel, 'allow-nat-networks']
+                if config.exists(nat_networks):
+                    config.delete(nat_networks)
+
+                # allow-nat-networks - Also sets a value only valid in Openswan
+                public_networks = base + ['site-to-site', 'peer', peer, 'tunnel', tunnel, 'allow-public-networks']
+                if config.exists(public_networks):
+                    config.delete(public_networks)
+
+    # Rename "logging log-level" and "logging log-modes" to something more human friendly
+    log = base + ['logging']
+    if config.exists(log):
+        config.rename(log, 'log')
+        log = base + ['log']
+
+    log_level = log + ['log-level']
+    if config.exists(log_level):
+        config.rename(log_level, 'level')
+
+    log_mode = log + ['log-modes']
+    if config.exists(log_mode):
+        config.rename(log_mode, 'subsystem')
+
+    # Rename "ipsec-interfaces interface" to "interface"
+    base_interfaces = base + ['ipsec-interfaces', 'interface']
+    if config.exists(base_interfaces):
+        config.copy(base_interfaces, base + ['interface'])
+        config.delete(base + ['ipsec-interfaces'])
+
+    # Remove deprecated "auto-update" option
+    tmp = base + ['auto-update']
+    if config.exists(tmp):
+        config.delete(tmp)
diff --git a/src/migration-scripts/ipsec/6-to-7 b/src/migration-scripts/ipsec/6-to-7
index f8b6de560..5679477c0 100755..100644
--- a/src/migration-scripts/ipsec/6-to-7
+++ b/src/migration-scripts/ipsec/6-to-7
@@ -1,26 +1,22 @@
-#!/usr/bin/env python3
+# Copyright 2021-2024 VyOS maintainers and contributors <maintainers@vyos.io>
 #
-# Copyright (C) 2021-2023 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/>.
 
 # Migrate /config/auth certificates and keys into PKI configuration
 
 import os
 
-from sys import argv
-from sys import exit
-
 from vyos.configtree import ConfigTree
 from vyos.pki import load_certificate
 from vyos.pki import load_crl
@@ -29,27 +25,27 @@ from vyos.pki import encode_certificate
 from vyos.pki import encode_private_key
 from vyos.utils.process import run
 
-if len(argv) < 2:
-    print("Must specify file name!")
-    exit(1)
-
-file_name = argv[1]
-
-with open(file_name, 'r') as f:
-    config_file = f.read()
-
 pki_base = ['pki']
 ipsec_site_base = ['vpn', 'ipsec', 'site-to-site', 'peer']
 
-config = ConfigTree(config_file)
-changes_made = False
-
 AUTH_DIR = '/config/auth'
 
 def wrapped_pem_to_config_value(pem):
     return "".join(pem.strip().split("\n")[1:-1])
 
-if config.exists(ipsec_site_base):
+def migrate(config: ConfigTree) -> None:
+    if not config.exists(ipsec_site_base):
+        return
+
+    migration_needed = False
+    for peer in config.list_nodes(ipsec_site_base):
+        if config.exists(ipsec_site_base + [peer, 'authentication', 'x509']):
+            migration_needed = True
+            break
+
+    if not migration_needed:
+        return
+
     config.set(pki_base + ['ca'])
     config.set_tag(pki_base + ['ca'])
 
@@ -60,8 +56,6 @@ if config.exists(ipsec_site_base):
         if not config.exists(ipsec_site_base + [peer, 'authentication', 'x509']):
             continue
 
-        changes_made = True
-
         peer_x509_base = ipsec_site_base + [peer, 'authentication', 'x509']
         pki_name = 'peer_' + peer.replace(".", "-").replace("@", "")
 
@@ -159,11 +153,3 @@ if config.exists(ipsec_site_base):
                 print(f'Failed to migrate private key on peer "{peer}"')
 
             config.delete(peer_x509_base + ['key'])
-
-if changes_made:
-    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)
diff --git a/src/migration-scripts/ipsec/7-to-8 b/src/migration-scripts/ipsec/7-to-8
index 9acc737d5..481f00d29 100755..100644
--- a/src/migration-scripts/ipsec/7-to-8
+++ b/src/migration-scripts/ipsec/7-to-8
@@ -1,18 +1,17 @@
-#!/usr/bin/env python3
+# Copyright 2021-2024 VyOS maintainers and contributors <maintainers@vyos.io>
 #
-# Copyright (C) 2021-2024 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/>.
 
 # Migrate rsa keys into PKI configuration
 
@@ -22,29 +21,15 @@ import struct
 
 from cryptography.hazmat.primitives.asymmetric import rsa
 
-from sys import argv
-from sys import exit
-
 from vyos.configtree import ConfigTree
 from vyos.pki import load_private_key
 from vyos.pki import encode_public_key
 from vyos.pki import encode_private_key
 
-if len(argv) < 2:
-    print("Must specify file name!")
-    exit(1)
-
-file_name = argv[1]
-
-with open(file_name, 'r') as f:
-    config_file = f.read()
-
 pki_base = ['pki']
 ipsec_site_base = ['vpn', 'ipsec', 'site-to-site', 'peer']
 rsa_keys_base = ['vpn', 'rsa-keys']
 
-config = ConfigTree(config_file)
-
 LOCAL_KEY_PATHS = ['/config/auth/', '/config/ipsec.d/rsa-keys/']
 
 def migrate_from_vyatta_key(data):
@@ -60,65 +45,59 @@ def wrapped_pem_to_config_value(pem):
 
 local_key_name = 'localhost'
 
-if config.exists(rsa_keys_base):
-    if not config.exists(pki_base + ['key-pair']):
-        config.set(pki_base + ['key-pair'])
-        config.set_tag(pki_base + ['key-pair'])
-
-    if config.exists(rsa_keys_base + ['local-key', 'file']):
-        local_file = config.return_value(rsa_keys_base + ['local-key', 'file'])
-        local_path = None
-        local_key = None
-
-        for path in LOCAL_KEY_PATHS:
-            full_path = os.path.join(path, local_file)
-            if os.path.exists(full_path):
-                local_path = full_path
-                break
-
-        if local_path:
-            with open(local_path, 'r') as f:
-                local_key_data = f.read()
-                local_key = load_private_key(local_key_data, wrap_tags=False)
-
-        if local_key:
-            local_key_pem = encode_private_key(local_key)
-            config.set(pki_base + ['key-pair', local_key_name, 'private', 'key'], value=wrapped_pem_to_config_value(local_key_pem))
-        else:
-            print('Failed to migrate local RSA key')
-
-    if config.exists(rsa_keys_base + ['rsa-key-name']):
-        for rsa_name in config.list_nodes(rsa_keys_base + ['rsa-key-name']):
-            if not config.exists(rsa_keys_base + ['rsa-key-name', rsa_name, 'rsa-key']):
-                continue
+def migrate(config: ConfigTree) -> None:
+    if config.exists(rsa_keys_base):
+        if not config.exists(pki_base + ['key-pair']):
+            config.set(pki_base + ['key-pair'])
+            config.set_tag(pki_base + ['key-pair'])
+
+        if config.exists(rsa_keys_base + ['local-key', 'file']):
+            local_file = config.return_value(rsa_keys_base + ['local-key', 'file'])
+            local_path = None
+            local_key = None
+
+            for path in LOCAL_KEY_PATHS:
+                full_path = os.path.join(path, local_file)
+                if os.path.exists(full_path):
+                    local_path = full_path
+                    break
+
+            if local_path:
+                with open(local_path, 'r') as f:
+                    local_key_data = f.read()
+                    local_key = load_private_key(local_key_data, wrap_tags=False)
+
+            if local_key:
+                local_key_pem = encode_private_key(local_key)
+                config.set(pki_base + ['key-pair', local_key_name, 'private', 'key'], value=wrapped_pem_to_config_value(local_key_pem))
+            else:
+                print('Failed to migrate local RSA key')
 
-            vyatta_key = config.return_value(rsa_keys_base + ['rsa-key-name', rsa_name, 'rsa-key'])
-            public_key = migrate_from_vyatta_key(vyatta_key)
+        if config.exists(rsa_keys_base + ['rsa-key-name']):
+            for rsa_name in config.list_nodes(rsa_keys_base + ['rsa-key-name']):
+                if not config.exists(rsa_keys_base + ['rsa-key-name', rsa_name, 'rsa-key']):
+                    continue
 
-            if public_key:
-                public_key_pem = encode_public_key(public_key)
-                config.set(pki_base + ['key-pair', rsa_name, 'public', 'key'], value=wrapped_pem_to_config_value(public_key_pem))
-            else:
-                print(f'Failed to migrate rsa-key "{rsa_name}"')
+                vyatta_key = config.return_value(rsa_keys_base + ['rsa-key-name', rsa_name, 'rsa-key'])
+                public_key = migrate_from_vyatta_key(vyatta_key)
 
-    config.delete(rsa_keys_base)
+                if public_key:
+                    public_key_pem = encode_public_key(public_key)
+                    config.set(pki_base + ['key-pair', rsa_name, 'public', 'key'], value=wrapped_pem_to_config_value(public_key_pem))
+                else:
+                    print(f'Failed to migrate rsa-key "{rsa_name}"')
 
-if config.exists(ipsec_site_base):
-    for peer in config.list_nodes(ipsec_site_base):
-        mode = config.return_value(ipsec_site_base + [peer, 'authentication', 'mode'])
+        config.delete(rsa_keys_base)
 
-        if mode != 'rsa':
-            continue
+    if config.exists(ipsec_site_base):
+        for peer in config.list_nodes(ipsec_site_base):
+            mode = config.return_value(ipsec_site_base + [peer, 'authentication', 'mode'])
 
-        config.set(ipsec_site_base + [peer, 'authentication', 'rsa', 'local-key'], value=local_key_name)
+            if mode != 'rsa':
+                continue
 
-        remote_key_name = config.return_value(ipsec_site_base + [peer, 'authentication', 'rsa-key-name'])
-        config.set(ipsec_site_base + [peer, 'authentication', 'rsa', 'remote-key'], value=remote_key_name)
-        config.delete(ipsec_site_base + [peer, 'authentication', 'rsa-key-name'])
+            config.set(ipsec_site_base + [peer, 'authentication', 'rsa', 'local-key'], value=local_key_name)
 
-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)
+            remote_key_name = config.return_value(ipsec_site_base + [peer, 'authentication', 'rsa-key-name'])
+            config.set(ipsec_site_base + [peer, 'authentication', 'rsa', 'remote-key'], value=remote_key_name)
+            config.delete(ipsec_site_base + [peer, 'authentication', 'rsa-key-name'])
diff --git a/src/migration-scripts/ipsec/8-to-9 b/src/migration-scripts/ipsec/8-to-9
index c08411f83..7f325139f 100755..100644
--- a/src/migration-scripts/ipsec/8-to-9
+++ b/src/migration-scripts/ipsec/8-to-9
@@ -1,48 +1,30 @@
-#!/usr/bin/env python3
+# Copyright 2022-2024 VyOS maintainers and contributors <maintainers@vyos.io>
 #
-# Copyright (C) 2022 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/>.
 
-from sys import argv
-from sys import exit
+# T4288 : close-action is missing in swanctl.conf
 
 from vyos.configtree import ConfigTree
 
-if len(argv) < 2:
-    print("Must specify file name!")
-    exit(1)
-
-file_name = argv[1]
-
-with open(file_name, 'r') as f:
-    config_file = f.read()
-
 base = ['vpn', 'ipsec', 'ike-group']
-config = ConfigTree(config_file)
 
-if not config.exists(base):
-    # Nothing to do
-    exit(0)
-else:
+def migrate(config: ConfigTree) -> None:
+    if not config.exists(base):
+        # Nothing to do
+        return
+
     for ike_group in config.list_nodes(base):
         base_closeaction = base + [ike_group, 'close-action']
         if config.exists(base_closeaction) and config.return_value(base_closeaction) == 'clear':
             config.set(base_closeaction, 'none', replace=True)
-
-try:
-    with open(file_name, 'w') as f:
-        f.write(config.to_string())
-except OSError as e:
-    print(f'Failed to save the modified config: {e}')
-    exit(1)
diff --git a/src/migration-scripts/ipsec/9-to-10 b/src/migration-scripts/ipsec/9-to-10
index bc10e1997..321a75973 100755..100644
--- a/src/migration-scripts/ipsec/9-to-10
+++ b/src/migration-scripts/ipsec/9-to-10
@@ -1,131 +1,114 @@
-#!/usr/bin/env python3
+# Copyright 2022-2024 VyOS maintainers and contributors <maintainers@vyos.io>
 #
-# Copyright (C) 2022-2024 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/>.
 
-import re
+# T4118: Change vpn ipsec syntax for IKE ESP and peer
+# T4879: IPsec migration script remote-id for peer name eq address
 
-from sys import argv
-from sys import exit
+import re
 
 from vyos.configtree import ConfigTree
 
-if len(argv) < 2:
-    print("Must specify file name!")
-    exit(1)
-
-file_name = argv[1]
-
-with open(file_name, 'r') as f:
-    config_file = f.read()
-
 base = ['vpn', 'ipsec']
-config = ConfigTree(config_file)
-
-if not config.exists(base):
-    # Nothing to do
-    exit(0)
-
-# IKE changes, T4118:
-if config.exists(base + ['ike-group']):
-    for ike_group in config.list_nodes(base + ['ike-group']):
-        # replace 'ipsec ike-group <tag> mobike disable'
-        #      => 'ipsec ike-group <tag> disable-mobike'
-        mobike = base + ['ike-group', ike_group, 'mobike']
-        if config.exists(mobike):
-            if config.return_value(mobike) == 'disable':
-                config.set(base + ['ike-group', ike_group, 'disable-mobike'])
-            config.delete(mobike)
-
-        # replace 'ipsec ike-group <tag> ikev2-reauth yes'
-        #      => 'ipsec ike-group <tag> ikev2-reauth'
-        reauth = base + ['ike-group', ike_group, 'ikev2-reauth']
-        if config.exists(reauth):
-            if config.return_value(reauth) == 'yes':
-                config.delete(reauth)
-                config.set(reauth)
-            else:
-                config.delete(reauth)
-
-# ESP changes
-# replace 'ipsec esp-group <tag> compression enable'
-#      => 'ipsec esp-group <tag> compression'
-if config.exists(base + ['esp-group']):
-    for esp_group in config.list_nodes(base + ['esp-group']):
-        compression = base + ['esp-group', esp_group, 'compression']
-        if config.exists(compression):
-            if config.return_value(compression) == 'enable':
-                config.delete(compression)
-                config.set(compression)
-            else:
-                config.delete(compression)
-
-# PEER changes
-if config.exists(base + ['site-to-site', 'peer']):
-    for peer in config.list_nodes(base + ['site-to-site', 'peer']):
-        peer_base = base + ['site-to-site', 'peer', peer]
-
-        # replace: 'peer <tag> id x'
-        #       => 'peer <tag> local-id x'
-        if config.exists(peer_base + ['authentication', 'id']):
-            config.rename(peer_base + ['authentication', 'id'], 'local-id')
-
-        # For the peer '@foo' set remote-id 'foo' if remote-id is not defined
-        # For the peer '192.0.2.1' set remote-id '192.0.2.1' if remote-id is not defined
-        if not config.exists(peer_base + ['authentication', 'remote-id']):
-            tmp = peer.replace('@', '') if peer.startswith('@') else peer
-            config.set(peer_base + ['authentication', 'remote-id'], value=tmp)
-
-        # replace: 'peer <tag> force-encapsulation enable'
-        #       => 'peer <tag> force-udp-encapsulation'
-        force_enc = peer_base + ['force-encapsulation']
-        if config.exists(force_enc):
-            if config.return_value(force_enc) == 'enable':
-                config.delete(force_enc)
-                config.set(peer_base + ['force-udp-encapsulation'])
-            else:
-                config.delete(force_enc)
-
-        # add option: 'peer <tag> remote-address x.x.x.x'
-        remote_address = peer
-        if peer.startswith('@'):
-            remote_address = 'any'
-        config.set(peer_base + ['remote-address'], value=remote_address)
-        # Peer name it is swanctl connection name and shouldn't contain dots or colons
-        # rename peer:
-        #   peer 192.0.2.1   => peer peer_192-0-2-1
-        #   peer 2001:db8::2 => peer peer_2001-db8--2
-        #   peer @foo        => peer peer_foo
-        re_peer_name = re.sub(':|\.', '-', peer)
-        if re_peer_name.startswith('@'):
-            re_peer_name = re.sub('@', '', re_peer_name)
-        new_peer_name = f'peer_{re_peer_name}'
-
-        config.rename(peer_base, new_peer_name)
-
-# remote-access/road-warrior changes
-if config.exists(base + ['remote-access', 'connection']):
-    for connection in config.list_nodes(base + ['remote-access', 'connection']):
-        ra_base = base + ['remote-access', 'connection', connection]
-        # replace: 'remote-access connection <tag> authentication id x'
-        #       => 'remote-access connection <tag> authentication local-id x'
-        if config.exists(ra_base + ['authentication', 'id']):
-            config.rename(ra_base + ['authentication', 'id'], 'local-id')
 
-try:
-    with open(file_name, 'w') as f:
-        f.write(config.to_string())
-except OSError as e:
-    print(f'Failed to save the modified config: {e}')
-    exit(1)
+def migrate(config: ConfigTree) -> None:
+    if not config.exists(base):
+        # Nothing to do
+        return
+
+    # IKE changes, T4118:
+    if config.exists(base + ['ike-group']):
+        for ike_group in config.list_nodes(base + ['ike-group']):
+            # replace 'ipsec ike-group <tag> mobike disable'
+            #      => 'ipsec ike-group <tag> disable-mobike'
+            mobike = base + ['ike-group', ike_group, 'mobike']
+            if config.exists(mobike):
+                if config.return_value(mobike) == 'disable':
+                    config.set(base + ['ike-group', ike_group, 'disable-mobike'])
+                config.delete(mobike)
+
+            # replace 'ipsec ike-group <tag> ikev2-reauth yes'
+            #      => 'ipsec ike-group <tag> ikev2-reauth'
+            reauth = base + ['ike-group', ike_group, 'ikev2-reauth']
+            if config.exists(reauth):
+                if config.return_value(reauth) == 'yes':
+                    config.delete(reauth)
+                    config.set(reauth)
+                else:
+                    config.delete(reauth)
+
+    # ESP changes
+    # replace 'ipsec esp-group <tag> compression enable'
+    #      => 'ipsec esp-group <tag> compression'
+    if config.exists(base + ['esp-group']):
+        for esp_group in config.list_nodes(base + ['esp-group']):
+            compression = base + ['esp-group', esp_group, 'compression']
+            if config.exists(compression):
+                if config.return_value(compression) == 'enable':
+                    config.delete(compression)
+                    config.set(compression)
+                else:
+                    config.delete(compression)
+
+    # PEER changes
+    if config.exists(base + ['site-to-site', 'peer']):
+        for peer in config.list_nodes(base + ['site-to-site', 'peer']):
+            peer_base = base + ['site-to-site', 'peer', peer]
+
+            # replace: 'peer <tag> id x'
+            #       => 'peer <tag> local-id x'
+            if config.exists(peer_base + ['authentication', 'id']):
+                config.rename(peer_base + ['authentication', 'id'], 'local-id')
+
+            # For the peer '@foo' set remote-id 'foo' if remote-id is not defined
+            # For the peer '192.0.2.1' set remote-id '192.0.2.1' if remote-id is not defined
+            if not config.exists(peer_base + ['authentication', 'remote-id']):
+                tmp = peer.replace('@', '') if peer.startswith('@') else peer
+                config.set(peer_base + ['authentication', 'remote-id'], value=tmp)
+
+            # replace: 'peer <tag> force-encapsulation enable'
+            #       => 'peer <tag> force-udp-encapsulation'
+            force_enc = peer_base + ['force-encapsulation']
+            if config.exists(force_enc):
+                if config.return_value(force_enc) == 'enable':
+                    config.delete(force_enc)
+                    config.set(peer_base + ['force-udp-encapsulation'])
+                else:
+                    config.delete(force_enc)
+
+            # add option: 'peer <tag> remote-address x.x.x.x'
+            remote_address = peer
+            if peer.startswith('@'):
+                remote_address = 'any'
+            config.set(peer_base + ['remote-address'], value=remote_address)
+            # Peer name it is swanctl connection name and shouldn't contain dots or colons
+            # rename peer:
+            #   peer 192.0.2.1   => peer peer_192-0-2-1
+            #   peer 2001:db8::2 => peer peer_2001-db8--2
+            #   peer @foo        => peer peer_foo
+            re_peer_name = re.sub(':|\.', '-', peer)
+            if re_peer_name.startswith('@'):
+                re_peer_name = re.sub('@', '', re_peer_name)
+            new_peer_name = f'peer_{re_peer_name}'
+
+            config.rename(peer_base, new_peer_name)
+
+    # remote-access/road-warrior changes
+    if config.exists(base + ['remote-access', 'connection']):
+        for connection in config.list_nodes(base + ['remote-access', 'connection']):
+            ra_base = base + ['remote-access', 'connection', connection]
+            # replace: 'remote-access connection <tag> authentication id x'
+            #       => 'remote-access connection <tag> authentication local-id x'
+            if config.exists(ra_base + ['authentication', 'id']):
+                config.rename(ra_base + ['authentication', 'id'], 'local-id')