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# vi: ts=4 expandtab
#
# Copyright (C) 2009-2010 Canonical Ltd.
# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
# Copyright (C) 2019 Sentrium S.L.
#
# Author: Scott Moser <scott.moser@canonical.com>
# Author: Juerg Haefliger <juerg.haefliger@hp.com>
# Author: Kim Hagen <kim@sentrium.io>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3, 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
import re
import sys
import ast
import subprocess
from ipaddress import IPv4Network
from cloudinit import stages
from cloudinit import util
from cloudinit.distros import ug_util
from cloudinit.settings import PER_INSTANCE
from vyos.configtree import ConfigTree
frequency = PER_INSTANCE
class VyosError(Exception):
"""Raised when the distro runs into an exception when setting vyos config.
This may happen when the ssh pub key format is wrong.
"""
pass
def set_pass_login(config, user, password, encrypted_pass):
if encrypted_pass:
config.set(['system', 'login', 'user', user, 'authentication', 'encrypted-password'], value=password, replace=True)
else:
config.set(['system', 'login', 'user', user, 'authentication', 'plaintext-password'], value=password, replace=True)
config.set_tag(['system', 'login', 'user'])
config.set(['system', 'login', 'user', user, 'level'], value='admin', replace=True)
def set_ssh_login(config, log, user, key_string, key_x):
key_type = None
key_data = None
key_name = None
if key_string == '':
log.debug("No keys found.")
return
key_parts = key_string.split(None)
for key in key_parts:
if 'ssh-dss' in key or 'ssh-rsa' in key:
key_type = key
if key.startswith('AAAAB3NzaC1yc2E') or key.startswith('AAAAB3NzaC1kc3M'):
key_data = key
if not key_type:
util.logexc(log, 'Key type not defined, wrong ssh key format.')
return
if not key_data:
util.logexc(log, 'Key base64 not defined, wrong ssh key format.')
return
if len(key_parts) > 2:
if key_parts[2] != key_type or key_parts[2] != key_data:
key_name = key_parts[2]
else:
key_name = "cloud-init-%s" % key_x
else:
key_name = "cloud-init-%s" % key_x
config.set(['system', 'login', 'user', user, 'authentication', 'public-keys', key_name , 'key'], value=key_data, replace=True)
config.set(['system', 'login', 'user', user, 'authentication', 'public-keys', key_name , 'type'], value=key_type, replace=True)
config.set_tag(['system', 'login', 'user'])
config.set_tag(['system', 'login', 'user', user, 'authentication', 'public-keys'])
config.set(['system', 'login', 'user', user, 'level'], value='admin', replace=True)
def set_config_ovf(config, hostname, metadata):
ip_0 = metadata['ip0']
mask_0 = metadata['netmask0']
gateway = metadata['gateway']
DNS = list(metadata['DNS'].replace(' ', '').split(','))
NTP = list(metadata['NTP'].replace(' ', '').split(','))
APIKEY = metadata['APIKEY']
if ip_0 != '' and mask_0 != '' and gateway != '':
cidr = str(IPv4Network('0.0.0.0/' + mask_0).prefixlen)
ipcidr = ip_0 + '/' + cidr
config.set(['interfaces', 'ethernet', 'eth0', 'address'], value=ipcidr, replace=True)
config.set_tag(['interfaces', 'ethernet'])
config.set(['protocols', 'static', 'route', '0.0.0.0/0', 'next-hop'], value=gateway, replace=True)
config.set_tag(['protocols', 'static', 'route'])
config.set_tag(['protocols', 'static', 'route', '0.0.0.0/0', 'next-hop'])
else:
config.set(['interfaces', 'ethernet', 'eth0', 'address'], value='dhcp', replace=True)
config.set_tag(['interfaces', 'ethernet'])
DNS = [ server for server in DNS if server != '' ]
if DNS:
for server in DNS:
config.set(['system', 'name-server'], value=server, replace=False)
NTP = [ server for server in NTP if server != '' ]
if NTP:
for server in NTP:
config.set(['system', 'ntp', 'server'], value=server, replace=False)
config.set_tag(['system', 'ntp', 'server'])
if APIKEY != '':
config.set(['service', 'https', 'api', 'keys', 'id', 'cloud-init', 'key'], value=APIKEY, replace=True)
config.set_tag(['service', 'https', 'api', 'keys', 'id'])
config.set(['service', 'ssh'], replace=True)
config.set(['service', 'ssh', 'port'], value='22', replace=True)
if hostname != '':
config.set(['system', 'host-name'], value=hostname, replace=True)
def set_config_interfaces(config, interface):
for item in interface['subnets']:
if item['type'] == 'static':
if 'address' in item and runcommand("/usr/bin/ipaddrcheck --is-ipv4 " + item['address']) == 0:
cidr = str(IPv4Network('0.0.0.0/' + item['netmask']).prefixlen)
ipcidr = item['address'] + '/' + cidr
config.set(['interfaces', 'ethernet', interface['name'], 'address'], value=ipcidr, replace=True)
config.set_tag(['interfaces', 'ethernet'])
if item['gateway']:
config.set(['protocols', 'static', 'route', '0.0.0.0/0', 'next-hop'], value=item['gateway'], replace=True)
config.set_tag(['protocols', 'static', 'route'])
config.set_tag(['protocols', 'static', 'route', '0.0.0.0/0', 'next-hop'])
if 'address' in item and runcommand("/usr/bin/ipaddrcheck --is-ipv6 " + item['address']) == 0:
config.set(['interfaces', 'ethernet', interface['name'], 'address'], value=item['address'], replace=False)
config.set_tag(['interfaces', 'ethernet'])
if item['gateway']:
config.set(['protocols', 'static', 'route6', '::/0', 'next-hop'], value=item['gateway'], replace=True)
config.set_tag(['protocols', 'static', 'route6'])
config.set_tag(['protocols', 'static', 'route6', '::/0', 'next-hop'])
else:
config.set(['interfaces', 'ethernet', interface['name'], 'address'], value='dhcp', replace=True)
config.set_tag(['interfaces', 'ethernet'])
def set_config_nameserver(config, log, interface):
if 'address' in interface:
for server in interface['address']:
config.set(['system', 'name-server'], value=server, replace=False)
else:
log.debug("No name-servers found.")
if 'search' in interface:
for server in interface['search']:
config.set(['system', 'domain-search'], value=server, replace=False)
else:
log.debug("No search-domains found.")
def set_config_dhcp(config):
config.set(['interfaces', 'ethernet', 'eth0', 'address'], value='dhcp', replace=True)
config.set_tag(['interfaces', 'ethernet'])
def set_config_ssh(config):
config.set(['service', 'ssh'], replace=True)
config.set(['service', 'ssh', 'port'], value='22', replace=True)
config.set(['service', 'ssh', 'client-keepalive-interval'], value='180', replace=True)
def set_config_hostname(config, hostname):
config.set(['system', 'host-name'], value=hostname, replace=True)
def set_config_cloud(config, hostname):
config.set(['service', 'ssh'], replace=True)
config.set(['service', 'ssh', 'port'], value='22', replace=True)
config.set(['service', 'ssh', 'client-keepalive-interval'], value='180', replace=True)
config.set(['interfaces', 'ethernet', 'eth0', 'address'], value='dhcp', replace=True)
config.set_tag(['interfaces', 'ethernet'])
config.set(['system', 'host-name'], value=hostname, replace=True)
def runcommand(cmd):
proc = subprocess.Popen(cmd,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
shell=True,
universal_newlines=True)
std_out, std_err = proc.communicate()
return proc.returncode
def handle(name, cfg, cloud, log, _args):
init = stages.Init()
dc = init.fetch()
cfg_file_name = '/opt/vyatta/etc/config/config.boot'
bak_file_name = '/opt/vyatta/etc/config.boot.default'
metadata = cloud.datasource.metadata
(netcfg, _) = init._find_networking_config()
(users, _) = ug_util.normalize_users_groups(cfg, cloud.distro)
(hostname, _) = util.get_hostname_fqdn(cfg, cloud)
key_x = 1
key_y = 0
# look at data that can be used for configuration
#print(dir(dc))
if not os.path.exists(cfg_file_name):
file_name = bak_file_name
else:
file_name = cfg_file_name
with open(file_name, 'r') as f:
config_file = f.read()
config = ConfigTree(config_file)
if 'Azure' in dc.dsname:
encrypted_pass = True
for key, val in users.items():
user = key
if 'passwd' in val:
password = val.get('passwd')
set_pass_login(config, user, password, encrypted_pass)
vyos_keys = metadata['public-keys']
for ssh_key in vyos_keys:
set_ssh_login(config, log, user, ssh_key, key_x)
key_x = key_x + 1
else:
encrypted_pass = False
for user in users:
password = util.get_cfg_option_str(cfg, 'passwd', None)
if not password:
password = util.get_cfg_option_str(cfg, 'password', None)
if password and password != '':
hash = re.match("(^\$.\$)", password)
hash_count = password.count('$')
if hash and hash_count >= 3:
base64 = password.split('$')[3]
base_64_len = len(base64)
if ((hash.group(1) == '$1$' and base_64_len == 22) or
(hash.group(1) == '$5$' and base_64_len == 43) or
(hash.group(1) == '$6$' and base_64_len == 86)):
encrypted_pass = True
set_pass_login(config, user, password, encrypted_pass)
vyos_keys = cloud.get_public_ssh_keys() or []
if 'ssh_authorized_keys' in cfg:
cfgkeys = cfg['ssh_authorized_keys']
vyos_keys.extend(cfgkeys)
for ssh_key in vyos_keys:
set_ssh_login(config, log, user, ssh_key, key_x)
key_x = key_x + 1
if 'OVF' in dc.dsname:
set_config_ovf(config, hostname, metadata)
key_y = 1
elif netcfg:
for interface in netcfg['config']:
if interface['type'] == 'physical':
key_y = 1
set_config_interfaces(config, interface)
if interface['type'] == 'nameserver':
set_config_nameserver(config, log, interface)
set_config_ssh(config)
set_config_hostname(config, hostname)
else:
set_config_dhcp(config)
set_config_ssh(config)
set_config_hostname(config, hostname)
if key_y == 0:
set_config_dhcp(config)
try:
with open(cfg_file_name, 'w') as f:
f.write(config.to_string())
except Exception as e:
util.logexc(log, "Failed to write configs into file %s error %s", file_name, e)
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