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#!/usr/bin/env python3
#
# Copyright (C) 2019-2022 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 re
import platform
import unittest
from base_vyostest_shim import VyOSUnitTestSHIM
from distutils.version import LooseVersion
from platform import release as kernel_version
from subprocess import Popen, PIPE
from pwd import getpwall
from vyos.configsession import ConfigSessionError
from vyos.util import cmd
from vyos.util import read_file
from vyos.template import inc_ip
base_path = ['system', 'login']
users = ['vyos1', 'vyos-roxx123', 'VyOS-123_super.Nice']
ssh_pubkey = """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"""
class TestSystemLogin(VyOSUnitTestSHIM.TestCase):
def tearDown(self):
# Delete individual users from configuration
for user in users:
self.cli_delete(base_path + ['user', user])
self.cli_commit()
# After deletion, a user is not allowed to remain in /etc/passwd
usernames = [x[0] for x in getpwall()]
for user in users:
self.assertNotIn(user, usernames)
def test_add_linux_system_user(self):
# We are not allowed to re-use a username already taken by the Linux
# base system
system_user = 'backup'
self.cli_set(base_path + ['user', system_user, 'authentication', 'plaintext-password', system_user])
# check validate() - can not add username which exists on the Debian
# base system (UID < 1000)
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_delete(base_path + ['user', system_user])
def test_system_login_user(self):
# Check if user can be created and we can SSH to localhost
self.cli_set(['service', 'ssh', 'port', '22'])
for user in users:
name = "VyOS Roxx " + user
home_dir = "/tmp/" + user
self.cli_set(base_path + ['user', user, 'authentication', 'plaintext-password', user])
self.cli_set(base_path + ['user', user, 'full-name', 'VyOS Roxx'])
self.cli_set(base_path + ['user', user, 'home-directory', home_dir])
self.cli_commit()
for user in users:
cmd = ['su','-', user]
proc = Popen(cmd, stdin=PIPE, stdout=PIPE, stderr=PIPE)
tmp = "{}\nuname -a".format(user)
proc.stdin.write(tmp.encode())
proc.stdin.flush()
(stdout, stderr) = proc.communicate()
# stdout is something like this:
# b'Linux LR1.wue3 5.10.61-amd64-vyos #1 SMP Fri Aug 27 08:55:46 UTC 2021 x86_64 GNU/Linux\n'
self.assertTrue(len(stdout) > 40)
def test_system_user_ssh_key(self):
ssh_user = 'ssh-test_user'
public_keys = 'vyos_test@domain-foo.com'
type = 'ssh-rsa'
self.cli_set(base_path + ['user', ssh_user, 'authentication', 'public-keys', public_keys, 'key', ssh_pubkey.replace('\n','')])
# check validate() - missing type for public-key
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_set(base_path + ['user', ssh_user, 'authentication', 'public-keys', public_keys, 'type', type])
self.cli_commit()
# Check that SSH key was written properly
tmp = cmd(f'sudo cat /home/{ssh_user}/.ssh/authorized_keys')
key = f'{type} ' + ssh_pubkey.replace('\n','')
self.assertIn(key, tmp)
self.cli_delete(base_path + ['user', ssh_user])
def test_radius_kernel_features(self):
# T2886: RADIUS requires some Kernel options to be present
kernel = platform.release()
kernel_config = read_file(f'/boot/config-{kernel}')
# T2886 - RADIUS authentication - check for statically compiled options
options = ['CONFIG_AUDIT', 'CONFIG_AUDITSYSCALL', 'CONFIG_AUDIT_ARCH']
if LooseVersion(kernel_version()) < LooseVersion('5.0'):
options.append('CONFIG_AUDIT_WATCH')
options.append('CONFIG_AUDIT_TREE')
for option in options:
self.assertIn(f'{option}=y', kernel_config)
def test_system_login_radius_ipv4(self):
# Verify generated RADIUS configuration files
radius_key = 'VyOSsecretVyOS'
radius_server = '172.16.100.10'
radius_source = '127.0.0.1'
radius_port = '2000'
radius_timeout = '1'
self.cli_set(base_path + ['radius', 'server', radius_server, 'key', radius_key])
self.cli_set(base_path + ['radius', 'server', radius_server, 'port', radius_port])
self.cli_set(base_path + ['radius', 'server', radius_server, 'timeout', radius_timeout])
self.cli_set(base_path + ['radius', 'source-address', radius_source])
self.cli_set(base_path + ['radius', 'source-address', inc_ip(radius_source, 1)])
# check validate() - Only one IPv4 source-address supported
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_delete(base_path + ['radius', 'source-address', inc_ip(radius_source, 1)])
self.cli_commit()
# this file must be read with higher permissions
pam_radius_auth_conf = cmd('sudo cat /etc/pam_radius_auth.conf')
tmp = re.findall(r'\n?{}:{}\s+{}\s+{}\s+{}'.format(radius_server,
radius_port, radius_key, radius_timeout,
radius_source), pam_radius_auth_conf)
self.assertTrue(tmp)
# required, static options
self.assertIn('priv-lvl 15', pam_radius_auth_conf)
self.assertIn('mapped_priv_user radius_priv_user', pam_radius_auth_conf)
# PAM
pam_common_account = read_file('/etc/pam.d/common-account')
self.assertIn('pam_radius_auth.so', pam_common_account)
pam_common_auth = read_file('/etc/pam.d/common-auth')
self.assertIn('pam_radius_auth.so', pam_common_auth)
pam_common_session = read_file('/etc/pam.d/common-session')
self.assertIn('pam_radius_auth.so', pam_common_session)
pam_common_session_noninteractive = read_file('/etc/pam.d/common-session-noninteractive')
self.assertIn('pam_radius_auth.so', pam_common_session_noninteractive)
# NSS
nsswitch_conf = read_file('/etc/nsswitch.conf')
tmp = re.findall(r'passwd:\s+mapuid\s+files\s+mapname', nsswitch_conf)
self.assertTrue(tmp)
tmp = re.findall(r'group:\s+mapname\s+files', nsswitch_conf)
self.assertTrue(tmp)
def test_system_login_radius_ipv6(self):
# Verify generated RADIUS configuration files
radius_key = 'VyOS-VyOS'
radius_server = '2001:db8::1'
radius_source = '::1'
radius_port = '4000'
radius_timeout = '4'
self.cli_set(base_path + ['radius', 'server', radius_server, 'key', radius_key])
self.cli_set(base_path + ['radius', 'server', radius_server, 'port', radius_port])
self.cli_set(base_path + ['radius', 'server', radius_server, 'timeout', radius_timeout])
self.cli_set(base_path + ['radius', 'source-address', radius_source])
self.cli_set(base_path + ['radius', 'source-address', inc_ip(radius_source, 1)])
# check validate() - Only one IPv4 source-address supported
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_delete(base_path + ['radius', 'source-address', inc_ip(radius_source, 1)])
self.cli_commit()
# this file must be read with higher permissions
pam_radius_auth_conf = cmd('sudo cat /etc/pam_radius_auth.conf')
tmp = re.findall(r'\n?\[{}\]:{}\s+{}\s+{}\s+\[{}\]'.format(radius_server,
radius_port, radius_key, radius_timeout,
radius_source), pam_radius_auth_conf)
self.assertTrue(tmp)
# required, static options
self.assertIn('priv-lvl 15', pam_radius_auth_conf)
self.assertIn('mapped_priv_user radius_priv_user', pam_radius_auth_conf)
# PAM
pam_common_account = read_file('/etc/pam.d/common-account')
self.assertIn('pam_radius_auth.so', pam_common_account)
pam_common_auth = read_file('/etc/pam.d/common-auth')
self.assertIn('pam_radius_auth.so', pam_common_auth)
pam_common_session = read_file('/etc/pam.d/common-session')
self.assertIn('pam_radius_auth.so', pam_common_session)
pam_common_session_noninteractive = read_file('/etc/pam.d/common-session-noninteractive')
self.assertIn('pam_radius_auth.so', pam_common_session_noninteractive)
# NSS
nsswitch_conf = read_file('/etc/nsswitch.conf')
tmp = re.findall(r'passwd:\s+mapuid\s+files\s+mapname', nsswitch_conf)
self.assertTrue(tmp)
tmp = re.findall(r'group:\s+mapname\s+files', nsswitch_conf)
self.assertTrue(tmp)
if __name__ == '__main__':
unittest.main(verbosity=2, failfast=True)
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