Merge pull request #2327 from vyos/mergify/bp/sagitta/pr-2325

T5165: Migrate policy local-route rule x destination to address (backport #2325)

1 files changed, 65 insertions, 0 deletions

diff --git a/src/migration-scripts/policy/5-to-6 b/src/migration-scripts/policy/5-to-6
new file mode 100755
index 000000000..f1545cddb
--- /dev/null
+++ b/src/migration-scripts/policy/5-to-6
@@ -0,0 +1,65 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 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
+# 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/>.
+
+# T5165: Migrate policy local-route rule <tag> destination|source
+
+import re
+
+from sys import argv
+from sys import exit
+
+from vyos.configtree import ConfigTree
+from vyos.ifconfig import Section
+
+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()
+
+base4 = ['policy', 'local-route']
+base6 = ['policy', 'local-route6']
+config = ConfigTree(config_file)
+
+if not config.exists(base4) and not config.exists(base6):
+    # Nothing to do
+    exit(0)
+
+# replace 'policy local-route{v6} rule <tag> destination|source <x.x.x.x>'
+#      => 'policy local-route{v6} rule <tag> destination|source address <x.x.x.x>'
+for base in [base4, base6]:
+    if config.exists(base + ['rule']):
+        for rule in config.list_nodes(base + ['rule']):
+            dst_path = base + ['rule', rule, 'destination']
+            src_path = base + ['rule', rule, 'source']
+            # Destination
+            if config.exists(dst_path):
+                for dst_addr in config.return_values(dst_path):
+                    config.set(dst_path + ['address'], value=dst_addr, replace=False)
+            # Source
+            if config.exists(src_path):
+                for src_addr in config.return_values(src_path):
+                    config.set(src_path + ['address'], value=src_addr, replace=False)
+
+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))
+    exit(1)