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#!/usr/bin/env python3
#
# Copyright (C) 2019 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
import sys
import pwd
import grp
import subprocess
import traceback
from datetime import datetime
from vyos.defaults import directories
from vyos.configsession import ConfigSession, ConfigSessionError
from vyos.configtree import ConfigTree
STATUS_FILE = '/tmp/vyos-config-status'
TRACE_FILE = '/tmp/boot-config-trace'
CFG_GROUP = 'vyattacfg'
trace_config = False
if 'log' in directories:
LOG_DIR = directories['log']
else:
LOG_DIR = '/var/log/vyatta'
LOG_FILE = LOG_DIR + '/vyos-boot-config-loader.log'
try:
with open('/proc/cmdline', 'r') as f:
cmdline = f.read()
if 'vyos-debug' in cmdline:
os.environ['VYOS_DEBUG'] = 'yes'
if 'vyos-config-debug' in cmdline:
os.environ['VYOS_DEBUG'] = 'yes'
trace_config = True
except Exception as e:
print('{0}'.format(e))
def write_config_status(status):
try:
with open(STATUS_FILE, 'w') as f:
f.write('{0}\n'.format(status))
except Exception as e:
print('{0}'.format(e))
def trace_to_file(trace_file_name):
try:
with open(trace_file_name, 'w') as trace_file:
traceback.print_exc(file=trace_file)
except Exception as e:
print('{0}'.format(e))
def failsafe(config_file_name):
fail_msg = """
!!!!!
There were errors loading the configuration
Please examine the errors in
{0}
and correct
!!!!!
""".format(TRACE_FILE)
print(fail_msg, file=sys.stderr)
users = [x[0] for x in pwd.getpwall()]
if 'vyos' in users:
return
try:
with open(config_file_name, 'r') as f:
config_file = f.read()
except Exception as e:
print("Catastrophic: no default config file "
"'{0}'".format(config_file_name))
sys.exit(1)
config = ConfigTree(config_file)
if not config.exists(['system', 'login', 'user', 'vyos',
'authentication', 'encrypted-password']):
print("No password entry in default config file;")
print("unable to recover password for user 'vyos'.")
sys.exit(1)
else:
passwd = config.return_value(['system', 'login', 'user', 'vyos',
'authentication',
'encrypted-password'])
cmd = ("useradd -s /bin/bash -G 'users,sudo' -m -N -p '{0}' "
"vyos".format(passwd))
try:
subprocess.check_call(cmd, shell=True)
except subprocess.CalledProcessError as e:
sys.exit("{0}".format(e))
if __name__ == '__main__':
if len(sys.argv) < 2:
print("Must specify boot config file.")
sys.exit(1)
else:
file_name = sys.argv[1]
# Set user and group options, so that others will be able to commit
# Currently, the only caller does 'sg CFG_GROUP', but that may change
cfg_group = grp.getgrnam(CFG_GROUP)
os.setgid(cfg_group.gr_gid)
# Need to set file permissions to 775 so that every vyattacfg group
# member has write access to the running config
os.umask(0o002)
session = ConfigSession(os.getpid(), 'vyos-boot-config-loader')
env = session.get_session_env()
default_file_name = env['vyatta_sysconfdir'] + '/config.boot.default'
try:
with open(file_name, 'r') as f:
config_file = f.read()
except Exception:
write_config_status(1)
if trace_config:
failsafe(default_file_name)
trace_to_file(TRACE_FILE)
sys.exit(1)
try:
time_begin_load = datetime.now()
load_out = session.load_config(file_name)
time_end_load = datetime.now()
time_begin_commit = datetime.now()
commit_out = session.commit()
time_end_commit = datetime.now()
write_config_status(0)
except ConfigSessionError:
# If here, there is no use doing session.discard, as we have no
# recoverable config environment, and will only throw an error
write_config_status(1)
if trace_config:
failsafe(default_file_name)
trace_to_file(TRACE_FILE)
sys.exit(1)
time_elapsed_load = time_end_load - time_begin_load
time_elapsed_commit = time_end_commit - time_begin_commit
try:
if not os.path.exists(LOG_DIR):
os.mkdir(LOG_DIR)
with open(LOG_FILE, 'a') as f:
f.write('\n\n')
f.write('{0} Begin config load\n'
''.format(time_begin_load))
f.write(load_out)
f.write('{0} End config load\n'
''.format(time_end_load))
f.write('Elapsed time for config load: {0}\n'
''.format(time_elapsed_load))
f.write('{0} Begin config commit\n'
''.format(time_begin_commit))
f.write(commit_out)
f.write('{0} End config commit\n'
''.format(time_end_commit))
f.write('Elapsed time for config commit: {0}\n'
''.format(time_elapsed_commit))
except Exception as e:
print('{0}'.format(e))
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