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from cloudinit import net
from cloudinit.net import cmdline
from cloudinit.net import eni
from cloudinit.net import network_state
from cloudinit import util
from .helpers import mock
from .helpers import TestCase
import base64
import copy
import gzip
import io
import json
import os
import shutil
import tempfile
DHCP_CONTENT_1 = """
DEVICE='eth0'
PROTO='dhcp'
IPV4ADDR='192.168.122.89'
IPV4BROADCAST='192.168.122.255'
IPV4NETMASK='255.255.255.0'
IPV4GATEWAY='192.168.122.1'
IPV4DNS0='192.168.122.1'
IPV4DNS1='0.0.0.0'
HOSTNAME='foohost'
DNSDOMAIN=''
NISDOMAIN=''
ROOTSERVER='192.168.122.1'
ROOTPATH=''
filename=''
UPTIME='21'
DHCPLEASETIME='3600'
DOMAINSEARCH='foo.com'
"""
DHCP_EXPECTED_1 = {
'name': 'eth0',
'type': 'physical',
'subnets': [{'broadcast': '192.168.122.255',
'control': 'manual',
'gateway': '192.168.122.1',
'dns_search': ['foo.com'],
'type': 'dhcp',
'netmask': '255.255.255.0',
'dns_nameservers': ['192.168.122.1']}],
}
STATIC_CONTENT_1 = """
DEVICE='eth1'
PROTO='static'
IPV4ADDR='10.0.0.2'
IPV4BROADCAST='10.0.0.255'
IPV4NETMASK='255.255.255.0'
IPV4GATEWAY='10.0.0.1'
IPV4DNS0='10.0.1.1'
IPV4DNS1='0.0.0.0'
HOSTNAME='foohost'
UPTIME='21'
DHCPLEASETIME='3600'
DOMAINSEARCH='foo.com'
"""
STATIC_EXPECTED_1 = {
'name': 'eth1',
'type': 'physical',
'subnets': [{'broadcast': '10.0.0.255', 'control': 'manual',
'gateway': '10.0.0.1',
'dns_search': ['foo.com'], 'type': 'static',
'netmask': '255.255.255.0',
'dns_nameservers': ['10.0.1.1']}],
}
class TestEniNetRendering(TestCase):
@mock.patch("cloudinit.net.sys_dev_path")
@mock.patch("cloudinit.net.sys_netdev_info")
@mock.patch("cloudinit.net.get_devicelist")
def test_default_generation(self, mock_get_devicelist,
mock_sys_netdev_info,
mock_sys_dev_path):
mock_get_devicelist.return_value = ['eth1000', 'lo']
dev_characteristics = {
'eth1000': {
"bridge": False,
"carrier": False,
"dormant": False,
"operstate": "down",
"address": "07-1C-C6-75-A4-BE",
}
}
def netdev_info(name, field):
return dev_characteristics[name][field]
mock_sys_netdev_info.side_effect = netdev_info
tmp_dir = tempfile.mkdtemp()
self.addCleanup(shutil.rmtree, tmp_dir)
def sys_dev_path(devname, path=""):
return tmp_dir + devname + "/" + path
for dev in dev_characteristics:
os.makedirs(os.path.join(tmp_dir, dev))
with open(os.path.join(tmp_dir, dev, 'operstate'), 'w') as fh:
fh.write("down")
mock_sys_dev_path.side_effect = sys_dev_path
network_cfg = net.generate_fallback_config()
ns = network_state.parse_net_config_data(network_cfg,
skip_broken=False)
render_dir = os.path.join(tmp_dir, "render")
os.makedirs(render_dir)
renderer = eni.Renderer()
renderer.render_network_state(render_dir, ns,
eni="interfaces",
links_prefix=None,
netrules=None)
self.assertTrue(os.path.exists(os.path.join(render_dir,
'interfaces')))
with open(os.path.join(render_dir, 'interfaces')) as fh:
contents = fh.read()
expected = """
auto lo
iface lo inet loopback
auto eth1000
iface eth1000 inet dhcp
"""
self.assertEqual(expected.lstrip(), contents.lstrip())
class TestCmdlineConfigParsing(TestCase):
simple_cfg = {
'config': [{"type": "physical", "name": "eth0",
"mac_address": "c0:d6:9f:2c:e8:80",
"subnets": [{"type": "dhcp"}]}]}
def test_cmdline_convert_dhcp(self):
found = cmdline._klibc_to_config_entry(DHCP_CONTENT_1)
self.assertEqual(found, ('eth0', DHCP_EXPECTED_1))
def test_cmdline_convert_static(self):
found = cmdline._klibc_to_config_entry(STATIC_CONTENT_1)
self.assertEqual(found, ('eth1', STATIC_EXPECTED_1))
def test_config_from_cmdline_net_cfg(self):
files = []
pairs = (('net-eth0.cfg', DHCP_CONTENT_1),
('net-eth1.cfg', STATIC_CONTENT_1))
macs = {'eth1': 'b8:ae:ed:75:ff:2b',
'eth0': 'b8:ae:ed:75:ff:2a'}
dhcp = copy.deepcopy(DHCP_EXPECTED_1)
dhcp['mac_address'] = macs['eth0']
static = copy.deepcopy(STATIC_EXPECTED_1)
static['mac_address'] = macs['eth1']
expected = {'version': 1, 'config': [dhcp, static]}
with util.tempdir() as tmpd:
for fname, content in pairs:
fp = os.path.join(tmpd, fname)
files.append(fp)
util.write_file(fp, content)
found = cmdline.config_from_klibc_net_cfg(files=files,
mac_addrs=macs)
self.assertEqual(found, expected)
def test_cmdline_with_b64(self):
data = base64.b64encode(json.dumps(self.simple_cfg).encode())
encoded_text = data.decode()
raw_cmdline = 'ro network-config=' + encoded_text + ' root=foo'
found = cmdline.read_kernel_cmdline_config(cmdline=raw_cmdline)
self.assertEqual(found, self.simple_cfg)
def test_cmdline_with_b64_gz(self):
data = _gzip_data(json.dumps(self.simple_cfg).encode())
encoded_text = base64.b64encode(data).decode()
raw_cmdline = 'ro network-config=' + encoded_text + ' root=foo'
found = cmdline.read_kernel_cmdline_config(cmdline=raw_cmdline)
self.assertEqual(found, self.simple_cfg)
def _gzip_data(data):
with io.BytesIO() as iobuf:
gzfp = gzip.GzipFile(mode="wb", fileobj=iobuf)
gzfp.write(data)
gzfp.close()
return iobuf.getvalue()
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