405 lines
16 KiB
Python
405 lines
16 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright (c) 2011 Citrix Systems, Inc.
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# Copyright 2011 OpenStack LLC.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Guest tools for ESX to set up network in the guest.
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On Windows we require pyWin32 installed on Python.
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"""
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import array
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import gettext
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import logging
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import os
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import platform
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import socket
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import struct
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import subprocess
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import sys
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import time
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gettext.install('nova', unicode=1)
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PLATFORM_WIN = 'win32'
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PLATFORM_LINUX = 'linux2'
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ARCH_32_BIT = '32bit'
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ARCH_64_BIT = '64bit'
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NO_MACHINE_ID = 'No machine id'
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# Logging
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FORMAT = "%(asctime)s - %(levelname)s - %(message)s"
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if sys.platform == PLATFORM_WIN:
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LOG_DIR = os.path.join(os.environ.get('ALLUSERSPROFILE'), 'openstack')
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elif sys.platform == PLATFORM_LINUX:
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LOG_DIR = '/var/log/openstack'
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else:
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LOG_DIR = 'logs'
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if not os.path.exists(LOG_DIR):
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os.mkdir(LOG_DIR)
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LOG_FILENAME = os.path.join(LOG_DIR, 'openstack-guest-tools.log')
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logging.basicConfig(filename=LOG_FILENAME, format=FORMAT)
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if sys.hexversion < 0x3000000:
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_byte = ord # 2.x chr to integer
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else:
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_byte = int # 3.x byte to integer
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class ProcessExecutionError:
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"""Process Execution Error Class."""
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def __init__(self, exit_code, stdout, stderr, cmd):
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self.exit_code = exit_code
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self.stdout = stdout
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self.stderr = stderr
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self.cmd = cmd
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def __str__(self):
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return str(self.exit_code)
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def _bytes2int(bytes):
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"""Convert bytes to int."""
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intgr = 0
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for byt in bytes:
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intgr = (intgr << 8) + _byte(byt)
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return intgr
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def _parse_network_details(machine_id):
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"""
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Parse the machine_id to get MAC, IP, Netmask and Gateway fields per NIC.
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machine_id is of the form ('NIC_record#NIC_record#', '')
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Each of the NIC will have record NIC_record in the form
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'MAC;IP;Netmask;Gateway;Broadcast;DNS' where ';' is field separator.
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Each record is separated by '#' from next record.
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"""
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logging.debug(_("Received machine_id from vmtools : %s") % machine_id[0])
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network_details = []
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if machine_id[1].strip() == "1":
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pass
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else:
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for machine_id_str in machine_id[0].split('#'):
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network_info_list = machine_id_str.split(';')
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if len(network_info_list) % 6 != 0:
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break
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no_grps = len(network_info_list) / 6
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i = 0
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while i < no_grps:
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k = i * 6
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network_details.append((
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network_info_list[k].strip().lower(),
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network_info_list[k + 1].strip(),
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network_info_list[k + 2].strip(),
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network_info_list[k + 3].strip(),
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network_info_list[k + 4].strip(),
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network_info_list[k + 5].strip().split(',')))
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i += 1
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logging.debug(_("NIC information from vmtools : %s") % network_details)
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return network_details
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def _get_windows_network_adapters():
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"""Get the list of windows network adapters."""
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import win32com.client
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wbem_locator = win32com.client.Dispatch('WbemScripting.SWbemLocator')
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wbem_service = wbem_locator.ConnectServer('.', 'root\cimv2')
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wbem_network_adapters = wbem_service.InstancesOf('Win32_NetworkAdapter')
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network_adapters = []
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for wbem_network_adapter in wbem_network_adapters:
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if wbem_network_adapter.NetConnectionStatus == 2 or \
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wbem_network_adapter.NetConnectionStatus == 7:
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adapter_name = wbem_network_adapter.NetConnectionID
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mac_address = wbem_network_adapter.MacAddress.lower()
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wbem_network_adapter_config = \
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wbem_network_adapter.associators_(
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'Win32_NetworkAdapterSetting',
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'Win32_NetworkAdapterConfiguration')[0]
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ip_address = ''
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subnet_mask = ''
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if wbem_network_adapter_config.IPEnabled:
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ip_address = wbem_network_adapter_config.IPAddress[0]
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subnet_mask = wbem_network_adapter_config.IPSubnet[0]
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#wbem_network_adapter_config.DefaultIPGateway[0]
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network_adapters.append({'name': adapter_name,
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'mac-address': mac_address,
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'ip-address': ip_address,
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'subnet-mask': subnet_mask})
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return network_adapters
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def _get_linux_network_adapters():
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"""Get the list of Linux network adapters."""
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import fcntl
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max_bytes = 8096
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arch = platform.architecture()[0]
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if arch == ARCH_32_BIT:
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offset1 = 32
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offset2 = 32
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elif arch == ARCH_64_BIT:
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offset1 = 16
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offset2 = 40
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else:
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raise OSError(_("Unknown architecture: %s") % arch)
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sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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names = array.array('B', '\0' * max_bytes)
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outbytes = struct.unpack('iL', fcntl.ioctl(
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sock.fileno(),
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0x8912,
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struct.pack('iL', max_bytes, names.buffer_info()[0])))[0]
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adapter_names = \
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[names.tostring()[n_counter:n_counter + offset1].split('\0', 1)[0]
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for n_counter in xrange(0, outbytes, offset2)]
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network_adapters = []
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for adapter_name in adapter_names:
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ip_address = socket.inet_ntoa(fcntl.ioctl(
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sock.fileno(),
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0x8915,
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struct.pack('256s', adapter_name))[20:24])
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subnet_mask = socket.inet_ntoa(fcntl.ioctl(
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sock.fileno(),
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0x891b,
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struct.pack('256s', adapter_name))[20:24])
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raw_mac_address = '%012x' % _bytes2int(fcntl.ioctl(
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sock.fileno(),
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0x8927,
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struct.pack('256s', adapter_name))[18:24])
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mac_address = ":".join([raw_mac_address[m_counter:m_counter + 2]
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for m_counter in range(0, len(raw_mac_address), 2)]).lower()
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network_adapters.append({'name': adapter_name,
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'mac-address': mac_address,
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'ip-address': ip_address,
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'subnet-mask': subnet_mask})
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return network_adapters
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def _get_adapter_name_and_ip_address(network_adapters, mac_address):
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"""Get the adapter name based on the MAC address."""
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adapter_name = None
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ip_address = None
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for network_adapter in network_adapters:
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if network_adapter['mac-address'] == mac_address.lower():
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adapter_name = network_adapter['name']
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ip_address = network_adapter['ip-address']
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break
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return adapter_name, ip_address
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def _get_win_adapter_name_and_ip_address(mac_address):
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"""Get Windows network adapter name."""
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network_adapters = _get_windows_network_adapters()
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return _get_adapter_name_and_ip_address(network_adapters, mac_address)
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def _get_linux_adapter_name_and_ip_address(mac_address):
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"""Get Linux network adapter name."""
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network_adapters = _get_linux_network_adapters()
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return _get_adapter_name_and_ip_address(network_adapters, mac_address)
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def _execute(cmd_list, process_input=None, check_exit_code=True):
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"""Executes the command with the list of arguments specified."""
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cmd = ' '.join(cmd_list)
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logging.debug(_("Executing command: '%s'") % cmd)
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env = os.environ.copy()
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obj = subprocess.Popen(cmd, shell=True, stdin=subprocess.PIPE,
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stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=env)
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result = None
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if process_input is not None:
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result = obj.communicate(process_input)
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else:
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result = obj.communicate()
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obj.stdin.close()
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if obj.returncode:
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logging.debug(_("Result was %s") % obj.returncode)
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if check_exit_code and obj.returncode != 0:
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(stdout, stderr) = result
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raise ProcessExecutionError(exit_code=obj.returncode,
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stdout=stdout,
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stderr=stderr,
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cmd=cmd)
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time.sleep(0.1)
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return result
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def _windows_set_networking():
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"""Set IP address for the windows VM."""
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program_files = os.environ.get('PROGRAMFILES')
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program_files_x86 = os.environ.get('PROGRAMFILES(X86)')
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vmware_tools_bin = None
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if os.path.exists(os.path.join(program_files, 'VMware', 'VMware Tools',
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'vmtoolsd.exe')):
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vmware_tools_bin = os.path.join(program_files, 'VMware',
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'VMware Tools', 'vmtoolsd.exe')
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elif os.path.exists(os.path.join(program_files, 'VMware', 'VMware Tools',
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'VMwareService.exe')):
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vmware_tools_bin = os.path.join(program_files, 'VMware',
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'VMware Tools', 'VMwareService.exe')
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elif program_files_x86 and os.path.exists(os.path.join(program_files_x86,
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'VMware', 'VMware Tools',
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'VMwareService.exe')):
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vmware_tools_bin = os.path.join(program_files_x86, 'VMware',
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'VMware Tools', 'VMwareService.exe')
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if vmware_tools_bin:
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cmd = ['"' + vmware_tools_bin + '"', '--cmd', 'machine.id.get']
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for network_detail in _parse_network_details(_execute(cmd,
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check_exit_code=False)):
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mac_address, ip_address, subnet_mask, gateway, broadcast,\
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dns_servers = network_detail
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adapter_name, current_ip_address = \
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_get_win_adapter_name_and_ip_address(mac_address)
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if adapter_name and not ip_address == current_ip_address:
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cmd = ['netsh', 'interface', 'ip', 'set', 'address',
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'name="%s"' % adapter_name, 'source=static', ip_address,
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subnet_mask, gateway, '1']
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_execute(cmd)
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# Windows doesn't let you manually set the broadcast address
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for dns_server in dns_servers:
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if dns_server:
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cmd = ['netsh', 'interface', 'ip', 'add', 'dns',
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'name="%s"' % adapter_name, dns_server]
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_execute(cmd)
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else:
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logging.warn(_("VMware Tools is not installed"))
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def _filter_duplicates(all_entries):
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final_list = []
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for entry in all_entries:
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if entry and entry not in final_list:
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final_list.append(entry)
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return final_list
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def _set_rhel_networking(network_details=None):
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"""Set IPv4 network settings for RHEL distros."""
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network_details = network_details or []
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all_dns_servers = []
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for network_detail in network_details:
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mac_address, ip_address, subnet_mask, gateway, broadcast,\
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dns_servers = network_detail
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all_dns_servers.extend(dns_servers)
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adapter_name, current_ip_address = \
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_get_linux_adapter_name_and_ip_address(mac_address)
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if adapter_name and not ip_address == current_ip_address:
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interface_file_name = \
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'/etc/sysconfig/network-scripts/ifcfg-%s' % adapter_name
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# Remove file
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os.remove(interface_file_name)
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# Touch file
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_execute(['touch', interface_file_name])
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interface_file = open(interface_file_name, 'w')
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interface_file.write('\nDEVICE=%s' % adapter_name)
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interface_file.write('\nUSERCTL=yes')
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interface_file.write('\nONBOOT=yes')
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interface_file.write('\nBOOTPROTO=static')
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interface_file.write('\nBROADCAST=%s' % broadcast)
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interface_file.write('\nNETWORK=')
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interface_file.write('\nGATEWAY=%s' % gateway)
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interface_file.write('\nNETMASK=%s' % subnet_mask)
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interface_file.write('\nIPADDR=%s' % ip_address)
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interface_file.write('\nMACADDR=%s' % mac_address)
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interface_file.close()
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if all_dns_servers:
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dns_file_name = "/etc/resolv.conf"
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os.remove(dns_file_name)
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_execute(['touch', dns_file_name])
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dns_file = open(dns_file_name, 'w')
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dns_file.write("; generated by OpenStack guest tools")
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unique_entries = _filter_duplicates(all_dns_servers)
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for dns_server in unique_entries:
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dns_file.write("\nnameserver %s" % dns_server)
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dns_file.close()
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_execute(['/sbin/service', 'network', 'restart'])
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def _set_ubuntu_networking(network_details=None):
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"""Set IPv4 network settings for Ubuntu."""
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network_details = network_details or []
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all_dns_servers = []
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interface_file_name = '/etc/network/interfaces'
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# Remove file
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os.remove(interface_file_name)
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# Touch file
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_execute(['touch', interface_file_name])
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interface_file = open(interface_file_name, 'w')
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for device, network_detail in enumerate(network_details):
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mac_address, ip_address, subnet_mask, gateway, broadcast,\
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dns_servers = network_detail
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all_dns_servers.extend(dns_servers)
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adapter_name, current_ip_address = \
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_get_linux_adapter_name_and_ip_address(mac_address)
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if adapter_name:
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interface_file.write('\nauto %s' % adapter_name)
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interface_file.write('\niface %s inet static' % adapter_name)
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interface_file.write('\nbroadcast %s' % broadcast)
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interface_file.write('\ngateway %s' % gateway)
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interface_file.write('\nnetmask %s' % subnet_mask)
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interface_file.write('\naddress %s\n' % ip_address)
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logging.debug(_("Successfully configured NIC %d with "
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"NIC info %s") % (device, network_detail))
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interface_file.close()
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if all_dns_servers:
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dns_file_name = "/etc/resolv.conf"
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os.remove(dns_file_name)
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_execute(['touch', dns_file_name])
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dns_file = open(dns_file_name, 'w')
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dns_file.write("; generated by OpenStack guest tools")
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unique_entries = _filter_duplicates(all_dns_servers)
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for dns_server in unique_entries:
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dns_file.write("\nnameserver %s" % dns_server)
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dns_file.close()
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logging.debug(_("Restarting networking....\n"))
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_execute(['/etc/init.d/networking', 'restart'])
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def _linux_set_networking():
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"""Set IP address for the Linux VM."""
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vmware_tools_bin = None
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if os.path.exists('/usr/sbin/vmtoolsd'):
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vmware_tools_bin = '/usr/sbin/vmtoolsd'
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elif os.path.exists('/usr/bin/vmtoolsd'):
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vmware_tools_bin = '/usr/bin/vmtoolsd'
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elif os.path.exists('/usr/sbin/vmware-guestd'):
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vmware_tools_bin = '/usr/sbin/vmware-guestd'
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elif os.path.exists('/usr/bin/vmware-guestd'):
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vmware_tools_bin = '/usr/bin/vmware-guestd'
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if vmware_tools_bin:
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cmd = [vmware_tools_bin, '--cmd', 'machine.id.get']
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network_details = _parse_network_details(_execute(cmd,
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check_exit_code=False))
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# TODO(sateesh): For other distros like suse, debian, BSD, etc.
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if(platform.dist()[0] == 'Ubuntu'):
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_set_ubuntu_networking(network_details)
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elif (platform.dist()[0] == 'redhat'):
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_set_rhel_networking(network_details)
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else:
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logging.warn(_("Distro '%s' not supported") % platform.dist()[0])
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else:
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logging.warn(_("VMware Tools is not installed"))
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if __name__ == '__main__':
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pltfrm = sys.platform
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if pltfrm == PLATFORM_WIN:
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_windows_set_networking()
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elif pltfrm == PLATFORM_LINUX:
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_linux_set_networking()
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else:
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raise NotImplementedError(_("Platform not implemented: '%s'") % pltfrm)
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