pppoe-server: T2829: add missing migrator for mppe leafNode

This is the companioned commit for 1bb1a388 ("pppoe-server: T2829: bugfix MPPE
node definition ") which actually migrates the PPPoE server configuration to
the new CLI format.

1 files changed, 61 insertions, 0 deletions

diff --git a/src/migration-scripts/pppoe-server/1-to-2 b/src/migration-scripts/pppoe-server/1-to-2
new file mode 100755
index 000000000..902efb86b
--- /dev/null
+++ b/src/migration-scripts/pppoe-server/1-to-2
@@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2020 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/>.
+
+# change mppe node to a leaf node with value prefer
+
+import os
+
+from sys import argv, exit
+from vyos.configtree import ConfigTree
+
+if (len(argv) < 1):
+    print("Must specify file name!")
+    exit(1)
+
+file_name = argv[1]
+
+with open(file_name, 'r') as f:
+    config_file = f.read()
+
+config = ConfigTree(config_file)
+base = ['service', 'pppoe-server']
+if not config.exists(base):
+    # Nothing to do
+    exit(0)
+else:
+    mppe_base = base + ['ppp-options', 'mppe']
+    if config.exists(mppe_base):
+        # get current values
+        tmp = config.list_nodes(mppe_base)
+        # drop node(s) first ...
+        config.delete(mppe_base)
+
+        print(tmp)
+        # set new value based on preference
+        if 'require' in tmp:
+            config.set(mppe_base, value='require')
+        elif 'prefer' in tmp:
+            config.set(mppe_base, value='prefer')
+        elif 'deny' in tmp:
+            config.set(mppe_base, value='deny')
+
+    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)
+