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interfaces-wwan.py
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interfaces-wwan.py
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#!/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/>.
import os
from sys import exit
from vyos.config import Config
from vyos.configdict import get_interface_dict
from vyos.configverify import verify_authentication
from vyos.configverify import verify_interface_exists
from vyos.configverify import verify_vrf
from vyos.ifconfig import WWANIf
from vyos.util import cmd
from vyos.util import call
from vyos.util import dict_search
from vyos.util import DEVNULL
from vyos import ConfigError
from vyos import airbag
airbag.enable()
def get_config(config=None):
"""
Retrive CLI config as dictionary. Dictionary can never be empty, as at least the
interface name will be added or a deleted flag
"""
if config:
conf = config
else:
conf = Config()
base = ['interfaces', 'wwan']
wwan = get_interface_dict(conf, base)
return wwan
def verify(wwan):
if 'deleted' in wwan:
return None
ifname = wwan['ifname']
if not 'apn' in wwan:
raise ConfigError(f'No APN configured for "{ifname}"!')
verify_interface_exists(ifname)
verify_authentication(wwan)
verify_vrf(wwan)
return None
def generate(wwan):
return None
def apply(wwan):
# we only need the modem number. wwan0 -> 0, wwan1 -> 1
modem = wwan['ifname'].lstrip('wwan')
base_cmd = f'mmcli --modem {modem}'
# Number of bearers is limited - always disconnect first
cmd(f'{base_cmd} --simple-disconnect')
w = WWANIf(wwan['ifname'])
if 'deleted' in wwan or 'disable' in wwan:
w.remove()
return None
ip_type = 'ipv4'
slaac = dict_search('ipv6.address.autoconf', wwan) != None
if 'address' in wwan:
if 'dhcp' in wwan['address'] and ('dhcpv6' in wwan['address'] or slaac):
ip_type = 'ipv4v6'
elif 'dhcpv6' in wwan['address'] or slaac:
ip_type = 'ipv6'
elif 'dhcp' in wwan['address']:
ip_type = 'ipv4'
options = f'ip-type={ip_type},apn=' + wwan['apn']
if 'authentication' in wwan:
options += ',user={user},password={password}'.format(**wwan['authentication'])
command = f'{base_cmd} --simple-connect="{options}"'
call(command, stdout=DEVNULL)
w.update(wwan)
return None
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)

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