1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
#!/usr/bin/env python3
#
# Copyright (C) 2020-2021 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/>.
# Migrate IPv6 router advertisments from a nested interface configuration to
# a denested "service router-advert"
import sys
from vyos.configtree import ConfigTree
def copy_rtradv(c, old_base, interface):
base = ['service', 'router-advert', 'interface']
if c.exists(old_base):
if not c.exists(base):
c.set(base)
c.set_tag(base)
# take the old node as a whole and copy it to new new path,
# additional migrations will be done afterwards
new_base = base + [interface]
c.copy(old_base, new_base)
c.delete(old_base)
# cur-hop-limit has been renamed to hop-limit
if c.exists(new_base + ['cur-hop-limit']):
c.rename(new_base + ['cur-hop-limit'], 'hop-limit')
bool_cleanup = ['managed-flag', 'other-config-flag']
for bool in bool_cleanup:
if c.exists(new_base + [bool]):
tmp = c.return_value(new_base + [bool])
c.delete(new_base + [bool])
if tmp == 'true':
c.set(new_base + [bool])
# max/min interval moved to subnode
intervals = ['max-interval', 'min-interval']
for interval in intervals:
if c.exists(new_base + [interval]):
tmp = c.return_value(new_base + [interval])
c.delete(new_base + [interval])
min_max = interval.split('-')[0]
c.set(new_base + ['interval', min_max], value=tmp)
# cleanup boolean nodes in individual route
route_base = new_base + ['route']
if c.exists(route_base):
for route in config.list_nodes(route_base):
if c.exists(route_base + [route, 'remove-route']):
tmp = c.return_value(route_base + [route, 'remove-route'])
c.delete(route_base + [route, 'remove-route'])
if tmp == 'false':
c.set(route_base + [route, 'no-remove-route'])
# cleanup boolean nodes in individual prefix
prefix_base = new_base + ['prefix']
if c.exists(prefix_base):
for prefix in config.list_nodes(prefix_base):
if c.exists(prefix_base + [prefix, 'autonomous-flag']):
tmp = c.return_value(prefix_base + [prefix, 'autonomous-flag'])
c.delete(prefix_base + [prefix, 'autonomous-flag'])
if tmp == 'false':
c.set(prefix_base + [prefix, 'no-autonomous-flag'])
if c.exists(prefix_base + [prefix, 'on-link-flag']):
tmp = c.return_value(prefix_base + [prefix, 'on-link-flag'])
c.delete(prefix_base + [prefix, 'on-link-flag'])
if tmp == 'true':
c.set(prefix_base + [prefix, 'on-link-flag'])
# router advertisement can be individually disabled per interface
# the node has been renamed from send-advert {true | false} to no-send-advert
if c.exists(new_base + ['send-advert']):
tmp = c.return_value(new_base + ['send-advert'])
c.delete(new_base + ['send-advert'])
if tmp == 'false':
c.set(new_base + ['no-send-advert'])
# link-mtu advertisement was formerly disabled by setting its value to 0
# ... this makes less sense - if it should not be send, just do not
# configure it
if c.exists(new_base + ['link-mtu']):
tmp = c.return_value(new_base + ['link-mtu'])
if tmp == '0':
c.delete(new_base + ['link-mtu'])
if __name__ == '__main__':
if (len(sys.argv) < 1):
print("Must specify file name!")
exit(1)
file_name = sys.argv[1]
with open(file_name, 'r') as f:
config_file = f.read()
config = ConfigTree(config_file)
# list all individual interface types like dummy, ethernet and so on
for if_type in config.list_nodes(['interfaces']):
base_if_type = ['interfaces', if_type]
# for every individual interface we need to check if there is an
# ipv6 ra configured ... and also for every VIF (VLAN) interface
for intf in config.list_nodes(base_if_type):
old_base = base_if_type + [intf, 'ipv6', 'router-advert']
copy_rtradv(config, old_base, intf)
vif_base = base_if_type + [intf, 'vif']
if config.exists(vif_base):
for vif in config.list_nodes(vif_base):
old_base = vif_base + [vif, 'ipv6', 'router-advert']
vlan_name = f'{intf}.{vif}'
copy_rtradv(config, old_base, vlan_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)
|
