ids: T4557: Migrate threshold and add new threshold types

Migrate "service ids ddos-protection threshold xxx" to
        "service ids ddos-protection general threshold xxx"

Add new threshold types:
  set service ids ddos-protection threshold tcp xxx
  set service ids ddos-protection threshold udp xxx
  set service ids ddos-protection threshold icmp xxx

1 files changed, 56 insertions, 0 deletions

diff --git a/src/migration-scripts/ids/0-to-1 b/src/migration-scripts/ids/0-to-1
new file mode 100755
index 000000000..9f08f7dc7
--- /dev/null
+++ b/src/migration-scripts/ids/0-to-1
@@ -0,0 +1,56 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2022 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/>.
+
+from sys import argv
+from sys import 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()
+
+base = ['service', 'ids', 'ddos-protection']
+config = ConfigTree(config_file)
+
+if not config.exists(base + ['threshold']):
+    # Nothing to do
+    exit(0)
+else:
+    if config.exists(base + ['threshold', 'fps']):
+        tmp = config.return_value(base + ['threshold', 'fps'])
+        config.delete(base + ['threshold', 'fps'])
+        config.set(base + ['threshold', 'general', 'fps'], value=tmp)
+    if config.exists(base + ['threshold', 'mbps']):
+        tmp = config.return_value(base + ['threshold', 'mbps'])
+        config.delete(base + ['threshold', 'mbps'])
+        config.set(base + ['threshold', 'general', 'mbps'], value=tmp)
+    if config.exists(base + ['threshold', 'pps']):
+        tmp = config.return_value(base + ['threshold', 'pps'])
+        config.delete(base + ['threshold', 'pps'])
+        config.set(base + ['threshold', 'general', 'pps'], 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)