blob: d323ceb4f943f4edd0dbf7daccd5e83063e0f9e6 (
plain)
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
134
135
|
#!/usr/bin/env python3
#
# Copyright (C) 2020-2024 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/>.
from ipaddress import IPv4Address
from sys import exit
from vyos import ConfigError
from vyos import frr
from vyos.config import Config
from vyos.template import render_to_string
from vyos import airbag
airbag.enable()
config_file = r'/tmp/static_mcast.frr'
# Get configuration for static multicast route
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
mroute = {
'old_mroute' : {},
'mroute' : {}
}
base_path = "protocols static multicast"
if not (conf.exists(base_path) or conf.exists_effective(base_path)):
return None
conf.set_level(base_path)
# Get multicast effective routes
for route in conf.list_effective_nodes('route'):
mroute['old_mroute'][route] = {}
for next_hop in conf.list_effective_nodes('route {0} next-hop'.format(route)):
mroute['old_mroute'][route].update({
next_hop : conf.return_value('route {0} next-hop {1} distance'.format(route, next_hop))
})
# Get multicast effective interface-routes
for route in conf.list_effective_nodes('interface-route'):
if not route in mroute['old_mroute']:
mroute['old_mroute'][route] = {}
for next_hop in conf.list_effective_nodes('interface-route {0} next-hop-interface'.format(route)):
mroute['old_mroute'][route].update({
next_hop : conf.return_value('interface-route {0} next-hop-interface {1} distance'.format(route, next_hop))
})
# Get multicast routes
for route in conf.list_nodes('route'):
mroute['mroute'][route] = {}
for next_hop in conf.list_nodes('route {0} next-hop'.format(route)):
mroute['mroute'][route].update({
next_hop : conf.return_value('route {0} next-hop {1} distance'.format(route, next_hop))
})
# Get multicast interface-routes
for route in conf.list_nodes('interface-route'):
if not route in mroute['mroute']:
mroute['mroute'][route] = {}
for next_hop in conf.list_nodes('interface-route {0} next-hop-interface'.format(route)):
mroute['mroute'][route].update({
next_hop : conf.return_value('interface-route {0} next-hop-interface {1} distance'.format(route, next_hop))
})
return mroute
def verify(mroute):
if mroute is None:
return None
for route in mroute['mroute']:
route = route.split('/')
if IPv4Address(route[0]) < IPv4Address('224.0.0.0'):
raise ConfigError(route + " not a multicast network")
def generate(mroute):
if mroute is None:
return None
mroute['new_frr_config'] = render_to_string('frr/static_mcast.frr.j2', mroute)
return None
def apply(mroute):
if mroute is None:
return None
static_daemon = 'staticd'
frr_cfg = frr.FRRConfig()
frr_cfg.load_configuration(static_daemon)
if 'old_mroute' in mroute:
for route_gr in mroute['old_mroute']:
for nh in mroute['old_mroute'][route_gr]:
if mroute['old_mroute'][route_gr][nh]:
frr_cfg.modify_section(f'^ip mroute {route_gr} {nh} {mroute["old_mroute"][route_gr][nh]}')
else:
frr_cfg.modify_section(f'^ip mroute {route_gr} {nh}')
if 'new_frr_config' in mroute:
frr_cfg.add_before(frr.default_add_before, mroute['new_frr_config'])
frr_cfg.commit_configuration(static_daemon)
return None
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)
|
