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authorsarthurdev <965089+sarthurdev@users.noreply.github.com>2024-02-12 23:33:07 +0100
committersarthurdev <965089+sarthurdev@users.noreply.github.com>2024-02-13 00:04:53 +0100
commit04bf9ee39f8243207ec777d6a5aeec78e3c9d66f (patch)
tree4a75807bcc8421fac9c45c59e82f45213d492ee3 /src/migration-scripts
parent19df28989d72f8006e1defd241ec5cc34660bbec (diff)
downloadvyos-1x-04bf9ee39f8243207ec777d6a5aeec78e3c9d66f.tar.gz
vyos-1x-04bf9ee39f8243207ec777d6a5aeec78e3c9d66f.zip
dhcpv6-server: T5993: Add subnet `interface` node, link subnet to locally connected interfaces
Prior dhcpd behaviour implicitly handled requests for locally connected subnets. Kea requires an explicit link between subnets and an interface.
Diffstat (limited to 'src/migration-scripts')
-rwxr-xr-xsrc/migration-scripts/dhcpv6-server/4-to-568
1 files changed, 68 insertions, 0 deletions
diff --git a/src/migration-scripts/dhcpv6-server/4-to-5 b/src/migration-scripts/dhcpv6-server/4-to-5
new file mode 100755
index 000000000..e808edbe0
--- /dev/null
+++ b/src/migration-scripts/dhcpv6-server/4-to-5
@@ -0,0 +1,68 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2024 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/>.
+
+# T5993: Check if subnet is locally accessible and assign interface to subnet
+
+import sys
+from ipaddress import ip_network
+from vyos.configtree import ConfigTree
+
+if (len(sys.argv) < 1):
+ print("Must specify file name!")
+ sys.exit(1)
+
+file_name = sys.argv[1]
+
+with open(file_name, 'r') as f:
+ config_file = f.read()
+
+base = ['service', 'dhcpv6-server', 'shared-network-name']
+config = ConfigTree(config_file)
+
+if not config.exists(base):
+ # Nothing to do
+ exit(0)
+
+def find_subnet_interface(subnet):
+ subnet_net = ip_network(subnet)
+
+ for iftype in config.list_nodes(['interfaces']):
+ for ifname in config.list_nodes(['interfaces', iftype]):
+ if_base = ['interfaces', iftype, ifname]
+
+ if config.exists(if_base + ['address']):
+ for addr in config.return_values(if_base + ['address']):
+ if ip_network(addr, strict=False) == subnet_net:
+ return ifname
+
+ return False
+
+for network in config.list_nodes(base):
+ if not config.exists(base + [network, 'subnet']):
+ continue
+
+ for subnet in config.list_nodes(base + [network, 'subnet']):
+ subnet_interface = find_subnet_interface(subnet)
+
+ if subnet_interface:
+ config.set(base + [network, 'subnet', subnet, 'interface'], value=subnet_interface)
+
+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)