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# Copyright 2014 Microsoft Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Requires Python 2.4+ and Openssl 1.0+
#
import socket
import glob
import mock
import azurelinuxagent.common.osutil.default as osutil
import azurelinuxagent.common.utils.shellutil as shellutil
from azurelinuxagent.common.osutil import get_osutil
from azurelinuxagent.common.utils import fileutil
from tests.tools import *
class TestOSUtil(AgentTestCase):
def test_restart(self):
# setup
retries = 3
ifname = 'dummy'
with patch.object(shellutil, "run") as run_patch:
run_patch.return_value = 1
# execute
osutil.DefaultOSUtil.restart_if(osutil.DefaultOSUtil(), ifname=ifname, retries=retries, wait=0)
# assert
self.assertEqual(run_patch.call_count, retries)
self.assertEqual(run_patch.call_args_list[0][0][0], 'ifdown {0} && ifup {0}'.format(ifname))
def test_get_first_if(self):
ifname, ipaddr = osutil.DefaultOSUtil().get_first_if()
self.assertTrue(ifname.startswith('eth'))
self.assertTrue(ipaddr is not None)
try:
socket.inet_aton(ipaddr)
except socket.error:
self.fail("not a valid ip address")
def test_isloopback(self):
self.assertTrue(osutil.DefaultOSUtil().is_loopback(b'lo'))
self.assertFalse(osutil.DefaultOSUtil().is_loopback(b'eth0'))
def test_isprimary(self):
routing_table = "\
Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT \n\
eth0 00000000 01345B0A 0003 0 0 5 00000000 0 0 0 \n\
eth0 00345B0A 00000000 0001 0 0 5 00000000 0 0 0 \n\
lo 00000000 01345B0A 0003 0 0 1 00FCFFFF 0 0 0 \n"
mo = mock.mock_open(read_data=routing_table)
with patch(open_patch(), mo):
self.assertFalse(osutil.DefaultOSUtil().is_primary_interface('lo'))
self.assertTrue(osutil.DefaultOSUtil().is_primary_interface('eth0'))
def test_multiple_default_routes(self):
routing_table = "\
Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT \n\
high 00000000 01345B0A 0003 0 0 5 00000000 0 0 0 \n\
low1 00000000 01345B0A 0003 0 0 1 00FCFFFF 0 0 0 \n"
mo = mock.mock_open(read_data=routing_table)
with patch(open_patch(), mo):
self.assertTrue(osutil.DefaultOSUtil().is_primary_interface('low1'))
def test_multiple_interfaces(self):
routing_table = "\
Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT \n\
first 00000000 01345B0A 0003 0 0 1 00000000 0 0 0 \n\
secnd 00000000 01345B0A 0003 0 0 1 00FCFFFF 0 0 0 \n"
mo = mock.mock_open(read_data=routing_table)
with patch(open_patch(), mo):
self.assertTrue(osutil.DefaultOSUtil().is_primary_interface('first'))
def test_interface_flags(self):
routing_table = "\
Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT \n\
nflg 00000000 01345B0A 0001 0 0 1 00000000 0 0 0 \n\
flgs 00000000 01345B0A 0003 0 0 1 00FCFFFF 0 0 0 \n"
mo = mock.mock_open(read_data=routing_table)
with patch(open_patch(), mo):
self.assertTrue(osutil.DefaultOSUtil().is_primary_interface('flgs'))
def test_no_interface(self):
routing_table = "\
Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT \n\
ndst 00000001 01345B0A 0003 0 0 1 00000000 0 0 0 \n\
nflg 00000000 01345B0A 0001 0 0 1 00FCFFFF 0 0 0 \n"
mo = mock.mock_open(read_data=routing_table)
with patch(open_patch(), mo):
self.assertFalse(osutil.DefaultOSUtil().is_primary_interface('ndst'))
self.assertFalse(osutil.DefaultOSUtil().is_primary_interface('nflg'))
self.assertFalse(osutil.DefaultOSUtil().is_primary_interface('invalid'))
def test_no_primary_does_not_throw(self):
with patch.object(osutil.DefaultOSUtil, 'get_primary_interface') \
as patch_primary:
exception = False
patch_primary.return_value = ''
try:
osutil.DefaultOSUtil().get_first_if()[0]
except Exception as e:
exception = True
self.assertFalse(exception)
def test_dhcp_lease_default(self):
self.assertTrue(osutil.DefaultOSUtil().get_dhcp_lease_endpoint() is None)
def test_dhcp_lease_ubuntu(self):
with patch.object(glob, "glob", return_value=['/var/lib/dhcp/dhclient.eth0.leases']):
with patch(open_patch(), mock.mock_open(read_data=load_data("dhcp.leases"))):
endpoint = get_osutil(distro_name='ubuntu', distro_version='12.04').get_dhcp_lease_endpoint()
self.assertTrue(endpoint is not None)
self.assertEqual(endpoint, "168.63.129.16")
endpoint = get_osutil(distro_name='ubuntu', distro_version='12.04').get_dhcp_lease_endpoint()
self.assertTrue(endpoint is not None)
self.assertEqual(endpoint, "168.63.129.16")
endpoint = get_osutil(distro_name='ubuntu', distro_version='14.04').get_dhcp_lease_endpoint()
self.assertTrue(endpoint is not None)
self.assertEqual(endpoint, "168.63.129.16")
def test_dhcp_lease_multi(self):
with patch.object(glob, "glob", return_value=['/var/lib/dhcp/dhclient.eth0.leases']):
with patch(open_patch(), mock.mock_open(read_data=load_data("dhcp.leases.multi"))):
endpoint = get_osutil(distro_name='ubuntu', distro_version='12.04').get_dhcp_lease_endpoint()
self.assertTrue(endpoint is not None)
self.assertEqual(endpoint, "second")
def test_get_total_mem(self):
"""
Validate the returned value matches to the one retrieved by invoking shell command
"""
cmd = "grep MemTotal /proc/meminfo |awk '{print $2}'"
ret = shellutil.run_get_output(cmd)
if ret[0] == 0:
self.assertEqual(int(ret[1]) / 1024, get_osutil().get_total_mem())
else:
self.fail("Cannot retrieve total memory using shell command.")
def test_get_processor_cores(self):
"""
Validate the returned value matches to the one retrieved by invoking shell command
"""
cmd = "grep 'processor.*:' /proc/cpuinfo |wc -l"
ret = shellutil.run_get_output(cmd)
if ret[0] == 0:
self.assertEqual(int(ret[1]), get_osutil().get_processor_cores())
else:
self.fail("Cannot retrieve number of process cores using shell command.")
def test_conf_sshd(self):
new_file = "\
Port 22\n\
Protocol 2\n\
ChallengeResponseAuthentication yes\n\
#PasswordAuthentication yes\n\
UsePAM yes\n\
"
expected_output = "\
Port 22\n\
Protocol 2\n\
ChallengeResponseAuthentication no\n\
#PasswordAuthentication yes\n\
UsePAM yes\n\
PasswordAuthentication no\n\
ClientAliveInterval 180\n\
"
with patch.object(fileutil, 'write_file') as patch_write:
with patch.object(fileutil, 'read_file', return_value=new_file):
osutil.DefaultOSUtil().conf_sshd(disable_password=True)
patch_write.assert_called_once_with(
conf.get_sshd_conf_file_path(),
expected_output)
def test_conf_sshd_with_match(self):
new_file = "\
Port 22\n\
ChallengeResponseAuthentication yes\n\
Match host 192.168.1.1\n\
ChallengeResponseAuthentication yes\n\
"
expected_output = "\
Port 22\n\
ChallengeResponseAuthentication no\n\
PasswordAuthentication no\n\
ClientAliveInterval 180\n\
Match host 192.168.1.1\n\
ChallengeResponseAuthentication yes\n\
"
with patch.object(fileutil, 'write_file') as patch_write:
with patch.object(fileutil, 'read_file', return_value=new_file):
osutil.DefaultOSUtil().conf_sshd(disable_password=True)
patch_write.assert_called_once_with(
conf.get_sshd_conf_file_path(),
expected_output)
def test_conf_sshd_with_match_last(self):
new_file = "\
Port 22\n\
Match host 192.168.1.1\n\
ChallengeResponseAuthentication yes\n\
"
expected_output = "\
Port 22\n\
PasswordAuthentication no\n\
ChallengeResponseAuthentication no\n\
ClientAliveInterval 180\n\
Match host 192.168.1.1\n\
ChallengeResponseAuthentication yes\n\
"
with patch.object(fileutil, 'write_file') as patch_write:
with patch.object(fileutil, 'read_file', return_value=new_file):
osutil.DefaultOSUtil().conf_sshd(disable_password=True)
patch_write.assert_called_once_with(
conf.get_sshd_conf_file_path(),
expected_output)
def test_conf_sshd_with_match_middle(self):
new_file = "\
Port 22\n\
match host 192.168.1.1\n\
ChallengeResponseAuthentication yes\n\
match all\n\
#Other config\n\
"
expected_output = "\
Port 22\n\
match host 192.168.1.1\n\
ChallengeResponseAuthentication yes\n\
match all\n\
#Other config\n\
PasswordAuthentication no\n\
ChallengeResponseAuthentication no\n\
ClientAliveInterval 180\n\
"
with patch.object(fileutil, 'write_file') as patch_write:
with patch.object(fileutil, 'read_file', return_value=new_file):
osutil.DefaultOSUtil().conf_sshd(disable_password=True)
patch_write.assert_called_once_with(
conf.get_sshd_conf_file_path(),
expected_output)
def test_conf_sshd_with_match_multiple(self):
new_file = "\
Port 22\n\
Match host 192.168.1.1\n\
ChallengeResponseAuthentication yes\n\
Match host 192.168.1.2\n\
ChallengeResponseAuthentication yes\n\
Match all\n\
#Other config\n\
"
expected_output = "\
Port 22\n\
Match host 192.168.1.1\n\
ChallengeResponseAuthentication yes\n\
Match host 192.168.1.2\n\
ChallengeResponseAuthentication yes\n\
Match all\n\
#Other config\n\
PasswordAuthentication no\n\
ChallengeResponseAuthentication no\n\
ClientAliveInterval 180\n\
"
with patch.object(fileutil, 'write_file') as patch_write:
with patch.object(fileutil, 'read_file', return_value=new_file):
osutil.DefaultOSUtil().conf_sshd(disable_password=True)
patch_write.assert_called_once_with(
conf.get_sshd_conf_file_path(),
expected_output)
def test_conf_sshd_with_match_multiple_first_last(self):
new_file = "\
Match host 192.168.1.1\n\
ChallengeResponseAuthentication yes\n\
Match host 192.168.1.2\n\
ChallengeResponseAuthentication yes\n\
"
expected_output = "\
PasswordAuthentication no\n\
ChallengeResponseAuthentication no\n\
ClientAliveInterval 180\n\
Match host 192.168.1.1\n\
ChallengeResponseAuthentication yes\n\
Match host 192.168.1.2\n\
ChallengeResponseAuthentication yes\n\
"
with patch.object(fileutil, 'write_file') as patch_write:
with patch.object(fileutil, 'read_file', return_value=new_file):
osutil.DefaultOSUtil().conf_sshd(disable_password=True)
patch_write.assert_called_once_with(
conf.get_sshd_conf_file_path(),
expected_output)
if __name__ == '__main__':
unittest.main()
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