mirror of
https://github.com/GNS3/gns3-server
synced 2024-12-01 04:38:12 +00:00
255 lines
8.8 KiB
Python
255 lines
8.8 KiB
Python
#
|
|
# Copyright (C) 2014 GNS3 Technologies Inc.
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# 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 socket
|
|
import struct
|
|
import psutil
|
|
|
|
from gns3server.compute.compute_error import ComputeError
|
|
from gns3server.config import Config
|
|
|
|
if psutil.version_info < (3, 0, 0):
|
|
raise Exception(
|
|
"psutil version should >= 3.0.0. If you are under Ubuntu/Debian install gns3 via apt instead of pip"
|
|
)
|
|
|
|
import logging
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
def _get_windows_interfaces_from_registry():
|
|
|
|
import winreg
|
|
|
|
# HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces
|
|
interfaces = []
|
|
try:
|
|
hkey = winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE, r"SOFTWARE\Microsoft\Windows NT\CurrentVersion\NetworkCards")
|
|
for index in range(winreg.QueryInfoKey(hkey)[0]):
|
|
network_card_id = winreg.EnumKey(hkey, index)
|
|
hkeycard = winreg.OpenKey(hkey, network_card_id)
|
|
guid, _ = winreg.QueryValueEx(hkeycard, "ServiceName")
|
|
netcard, _ = winreg.QueryValueEx(hkeycard, "Description")
|
|
connection = (
|
|
r"SYSTEM\CurrentControlSet\Control\Network\{4D36E972-E325-11CE-BFC1-08002BE10318}"
|
|
+ fr"\{guid}\Connection"
|
|
)
|
|
hkeycon = winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE, connection)
|
|
name, _ = winreg.QueryValueEx(hkeycon, "Name")
|
|
interface = fr"SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{guid}"
|
|
hkeyinterface = winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE, interface)
|
|
is_dhcp_enabled, _ = winreg.QueryValueEx(hkeyinterface, "EnableDHCP")
|
|
if is_dhcp_enabled:
|
|
ip_address, _ = winreg.QueryValueEx(hkeyinterface, "DhcpIPAddress")
|
|
netmask, _ = winreg.QueryValueEx(hkeyinterface, "DhcpSubnetMask")
|
|
else:
|
|
ip_address, _ = winreg.QueryValueEx(hkeyinterface, "IPAddress")
|
|
netmask, _ = winreg.QueryValueEx(hkeyinterface, "SubnetMask")
|
|
if ip_address:
|
|
# get the first IPv4 address only
|
|
ip_address = ip_address[0]
|
|
npf_interface = "\\Device\\NPF_{guid}".format(guid=guid)
|
|
interfaces.append(
|
|
{
|
|
"id": npf_interface,
|
|
"name": name,
|
|
"ip_address": ip_address,
|
|
"mac_address": "", # TODO: find MAC address in registry
|
|
"netcard": netcard,
|
|
"netmask": netmask,
|
|
"type": "ethernet",
|
|
}
|
|
)
|
|
winreg.CloseKey(hkeyinterface)
|
|
winreg.CloseKey(hkeycon)
|
|
winreg.CloseKey(hkeycard)
|
|
winreg.CloseKey(hkey)
|
|
except OSError as e:
|
|
log.error(f"could not read registry information: {e}")
|
|
|
|
return interfaces
|
|
|
|
|
|
def get_windows_interfaces():
|
|
"""
|
|
Get Windows interfaces.
|
|
|
|
:returns: list of windows interfaces
|
|
"""
|
|
|
|
import win32com.client
|
|
import pywintypes
|
|
|
|
interfaces = []
|
|
try:
|
|
locator = win32com.client.Dispatch("WbemScripting.SWbemLocator")
|
|
service = locator.ConnectServer(".", r"root\cimv2")
|
|
network_configs = service.InstancesOf("Win32_NetworkAdapterConfiguration")
|
|
# more info on Win32_NetworkAdapter: http://msdn.microsoft.com/en-us/library/aa394216%28v=vs.85%29.aspx
|
|
for adapter in service.InstancesOf("Win32_NetworkAdapter"):
|
|
if adapter.NetConnectionStatus == 2 or adapter.NetConnectionStatus == 7:
|
|
# adapter is connected or media disconnected
|
|
ip_address = ""
|
|
netmask = ""
|
|
for network_config in network_configs:
|
|
if network_config.InterfaceIndex == adapter.InterfaceIndex:
|
|
if network_config.IPAddress:
|
|
# get the first IPv4 address only
|
|
ip_address = network_config.IPAddress[0]
|
|
netmask = network_config.IPSubnet[0]
|
|
break
|
|
npf_interface = "\\Device\\NPF_{guid}".format(guid=adapter.GUID)
|
|
interfaces.append(
|
|
{
|
|
"id": npf_interface,
|
|
"name": adapter.NetConnectionID,
|
|
"ip_address": ip_address,
|
|
"mac_address": adapter.MACAddress,
|
|
"netcard": adapter.name,
|
|
"netmask": netmask,
|
|
"type": "ethernet",
|
|
}
|
|
)
|
|
except (AttributeError, pywintypes.com_error):
|
|
log.warning("Could not use the COM service to retrieve interface info, trying using the registry...")
|
|
return _get_windows_interfaces_from_registry()
|
|
|
|
return interfaces
|
|
|
|
|
|
def has_netmask(interface_name):
|
|
"""
|
|
Checks if an interface has a netmask.
|
|
|
|
:param interface: interface name
|
|
|
|
:returns: boolean
|
|
"""
|
|
for interface in interfaces():
|
|
if interface["name"] == interface_name:
|
|
if interface["netmask"] and len(interface["netmask"]) > 0:
|
|
return True
|
|
return False
|
|
return False
|
|
|
|
|
|
def is_interface_up(interface):
|
|
"""
|
|
Checks if an interface is up.
|
|
|
|
:param interface: interface name
|
|
|
|
:returns: boolean
|
|
"""
|
|
|
|
if sys.platform.startswith("linux"):
|
|
|
|
if interface not in psutil.net_if_addrs():
|
|
return False
|
|
|
|
import fcntl
|
|
|
|
SIOCGIFFLAGS = 0x8913
|
|
try:
|
|
with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as s:
|
|
result = fcntl.ioctl(s.fileno(), SIOCGIFFLAGS, interface + "\0" * 256)
|
|
(flags,) = struct.unpack("H", result[16:18])
|
|
if flags & 1: # check if the up bit is set
|
|
return True
|
|
return False
|
|
except OSError as e:
|
|
raise ComputeError(f"Exception when checking if {interface} is up: {e}")
|
|
else:
|
|
# TODO: Windows & OSX support
|
|
return True
|
|
|
|
|
|
def is_interface_bridge(interface):
|
|
"""
|
|
:returns: True if interface is a bridge
|
|
"""
|
|
return os.path.exists(os.path.join("/sys/class/net/", interface, "bridge"))
|
|
|
|
|
|
def interfaces():
|
|
"""
|
|
Gets the network interfaces on this server.
|
|
|
|
:returns: list of network interfaces
|
|
"""
|
|
|
|
results = []
|
|
allowed_interfaces = Config.instance().settings.Server.allowed_interfaces
|
|
net_if_addrs = psutil.net_if_addrs()
|
|
for interface in sorted(net_if_addrs.keys()):
|
|
if allowed_interfaces and interface not in allowed_interfaces and not interface.startswith("gns3tap"):
|
|
log.warning(f"Interface '{interface}' is not allowed to be used on this server")
|
|
continue
|
|
ip_address = ""
|
|
mac_address = ""
|
|
netmask = ""
|
|
interface_type = "ethernet"
|
|
for addr in net_if_addrs[interface]:
|
|
# get the first available IPv4 address only
|
|
if addr.family == socket.AF_INET:
|
|
ip_address = addr.address
|
|
netmask = addr.netmask
|
|
if addr.family == psutil.AF_LINK:
|
|
mac_address = addr.address
|
|
if interface.startswith("tap"):
|
|
# found no way to reliably detect a TAP interface
|
|
interface_type = "tap"
|
|
results.append(
|
|
{
|
|
"id": interface,
|
|
"name": interface,
|
|
"ip_address": ip_address,
|
|
"netmask": netmask,
|
|
"mac_address": mac_address,
|
|
"type": interface_type,
|
|
}
|
|
)
|
|
|
|
# This interface have special behavior
|
|
for result in results:
|
|
result["special"] = False
|
|
for special_interface in (
|
|
"lo",
|
|
"vmnet",
|
|
"vboxnet",
|
|
"docker",
|
|
"lxcbr",
|
|
"virbr",
|
|
"ovs-system",
|
|
"veth",
|
|
"fw",
|
|
"p2p",
|
|
"bridge",
|
|
"vmware",
|
|
"virtualbox",
|
|
"gns3",
|
|
):
|
|
if result["name"].lower().startswith(special_interface):
|
|
result["special"] = True
|
|
for special_interface in "-nic":
|
|
if result["name"].lower().endswith(special_interface):
|
|
result["special"] = True
|
|
return results
|