mirror of
https://github.com/GNS3/gns3-server
synced 2024-12-26 16:58:28 +00:00
86f87aec74
Fix deprecated use of aiohttp.Timeout. Fixes #1296. Use "async with" with aiohttp.ClientSession(). Make sure websocket connections are properly closed, see https://docs.aiohttp.org/en/stable/web_advanced.html#graceful-shutdown Finish to drop Python 3.4.
354 lines
14 KiB
Python
354 lines
14 KiB
Python
#!/usr/bin/env python
|
|
#
|
|
# Copyright (C) 2016 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 sys
|
|
import aiohttp
|
|
import logging
|
|
import asyncio
|
|
import socket
|
|
|
|
from .base_gns3_vm import BaseGNS3VM
|
|
from .gns3_vm_error import GNS3VMError
|
|
|
|
from ...compute.virtualbox import (
|
|
VirtualBox,
|
|
VirtualBoxError
|
|
)
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class VirtualBoxGNS3VM(BaseGNS3VM):
|
|
|
|
def __init__(self, controller):
|
|
|
|
self._engine = "virtualbox"
|
|
super().__init__(controller)
|
|
self._virtualbox_manager = VirtualBox()
|
|
|
|
async def _execute(self, subcommand, args, timeout=60):
|
|
|
|
try:
|
|
result = await self._virtualbox_manager.execute(subcommand, args, timeout)
|
|
return ("\n".join(result))
|
|
except VirtualBoxError as e:
|
|
raise GNS3VMError("Error while executing VBoxManage command: {}".format(e))
|
|
|
|
async def _get_state(self):
|
|
"""
|
|
Returns the VM state (e.g. running, paused etc.)
|
|
|
|
:returns: state (string)
|
|
"""
|
|
|
|
result = await self._execute("showvminfo", [self._vmname, "--machinereadable"])
|
|
for info in result.splitlines():
|
|
if '=' in info:
|
|
name, value = info.split('=', 1)
|
|
if name == "VMState":
|
|
return value.strip('"')
|
|
return "unknown"
|
|
|
|
async def _look_for_interface(self, network_backend):
|
|
"""
|
|
Look for an interface with a specific network backend.
|
|
|
|
:returns: interface number or -1 if none is found
|
|
"""
|
|
|
|
result = await self._execute("showvminfo", [self._vmname, "--machinereadable"])
|
|
interface = -1
|
|
for info in result.splitlines():
|
|
if '=' in info:
|
|
name, value = info.split('=', 1)
|
|
if name.startswith("nic") and value.strip('"') == network_backend:
|
|
try:
|
|
interface = int(name[3:])
|
|
break
|
|
except ValueError:
|
|
continue
|
|
return interface
|
|
|
|
async def _look_for_vboxnet(self, interface_number):
|
|
"""
|
|
Look for the VirtualBox network name associated with a host only interface.
|
|
|
|
:returns: None or vboxnet name
|
|
"""
|
|
|
|
result = await self._execute("showvminfo", [self._vmname, "--machinereadable"])
|
|
for info in result.splitlines():
|
|
if '=' in info:
|
|
name, value = info.split('=', 1)
|
|
if name == "hostonlyadapter{}".format(interface_number):
|
|
return value.strip('"')
|
|
return None
|
|
|
|
async def _check_dhcp_server(self, vboxnet):
|
|
"""
|
|
Check if the DHCP server associated with a vboxnet is enabled.
|
|
|
|
:param vboxnet: vboxnet name
|
|
:returns: boolean
|
|
"""
|
|
|
|
properties = await self._execute("list", ["dhcpservers"])
|
|
flag_dhcp_server_found = False
|
|
for prop in properties.splitlines():
|
|
try:
|
|
name, value = prop.split(':', 1)
|
|
except ValueError:
|
|
continue
|
|
if name.strip() == "NetworkName" and value.strip().endswith(vboxnet):
|
|
flag_dhcp_server_found = True
|
|
if flag_dhcp_server_found and name.strip() == "Enabled":
|
|
if value.strip() == "Yes":
|
|
return True
|
|
return False
|
|
|
|
async def _check_vboxnet_exists(self, vboxnet):
|
|
"""
|
|
Check if the vboxnet interface exists
|
|
|
|
:param vboxnet: vboxnet name
|
|
:returns: boolean
|
|
"""
|
|
|
|
properties = await self._execute("list", ["hostonlyifs"])
|
|
for prop in properties.splitlines():
|
|
try:
|
|
name, value = prop.split(':', 1)
|
|
except ValueError:
|
|
continue
|
|
if name.strip() == "Name" and value.strip() == vboxnet:
|
|
return True
|
|
return False
|
|
|
|
async def _find_first_available_vboxnet(self):
|
|
"""
|
|
Find the first available vboxnet.
|
|
"""
|
|
|
|
properties = await self._execute("list", ["hostonlyifs"])
|
|
for prop in properties.splitlines():
|
|
try:
|
|
name, value = prop.split(':', 1)
|
|
except ValueError:
|
|
continue
|
|
if name.strip() == "Name":
|
|
return value.strip()
|
|
return None
|
|
|
|
async def _check_vbox_port_forwarding(self):
|
|
"""
|
|
Checks if the NAT port forwarding rule exists.
|
|
|
|
:returns: boolean
|
|
"""
|
|
|
|
result = await self._execute("showvminfo", [self._vmname, "--machinereadable"])
|
|
for info in result.splitlines():
|
|
if '=' in info:
|
|
name, value = info.split('=', 1)
|
|
if name.startswith("Forwarding") and value.strip('"').startswith("GNS3VM"):
|
|
return True
|
|
return False
|
|
|
|
async def list(self):
|
|
"""
|
|
List all VirtualBox VMs
|
|
"""
|
|
|
|
return (await self._virtualbox_manager.list_vms())
|
|
|
|
async def start(self):
|
|
"""
|
|
Start the GNS3 VM.
|
|
"""
|
|
|
|
# get a NAT interface number
|
|
nat_interface_number = await self._look_for_interface("nat")
|
|
if nat_interface_number < 0:
|
|
raise GNS3VMError('VM "{}" must have a NAT interface configured in order to start'.format(self.vmname))
|
|
|
|
hostonly_interface_number = await self._look_for_interface("hostonly")
|
|
if hostonly_interface_number < 0:
|
|
raise GNS3VMError('VM "{}" must have a host-only interface configured in order to start'.format(self.vmname))
|
|
|
|
vboxnet = await self._look_for_vboxnet(hostonly_interface_number)
|
|
if vboxnet is None:
|
|
raise GNS3VMError('A VirtualBox host-only network could not be found on network adapter {} for "{}"'.format(hostonly_interface_number, self._vmname))
|
|
|
|
if not (await self._check_vboxnet_exists(vboxnet)):
|
|
if sys.platform.startswith("win") and vboxnet == "vboxnet0":
|
|
# The GNS3 VM is configured with vboxnet0 by default which is not available
|
|
# on Windows. Try to patch this with the first available vboxnet we find.
|
|
first_available_vboxnet = await self._find_first_available_vboxnet()
|
|
if first_available_vboxnet is None:
|
|
raise GNS3VMError('Please add a VirtualBox host-only network with DHCP enabled and attached it to network adapter {} for "{}"'.format(hostonly_interface_number, self._vmname))
|
|
await self.set_hostonly_network(hostonly_interface_number, first_available_vboxnet)
|
|
vboxnet = first_available_vboxnet
|
|
else:
|
|
raise GNS3VMError('VirtualBox host-only network "{}" does not exist, please make the sure the network adapter {} configuration is valid for "{}"'.format(vboxnet,
|
|
hostonly_interface_number,
|
|
self._vmname))
|
|
|
|
if not (await self._check_dhcp_server(vboxnet)):
|
|
raise GNS3VMError('DHCP must be enabled on VirtualBox host-only network "{}"'.format(vboxnet))
|
|
|
|
vm_state = await self._get_state()
|
|
log.info('"{}" state is {}'.format(self._vmname, vm_state))
|
|
|
|
if vm_state == "poweroff":
|
|
await self.set_vcpus(self.vcpus)
|
|
await self.set_ram(self.ram)
|
|
|
|
if vm_state in ("poweroff", "saved"):
|
|
# start the VM if it is not running
|
|
args = [self._vmname]
|
|
if self._headless:
|
|
args.extend(["--type", "headless"])
|
|
await self._execute("startvm", args)
|
|
elif vm_state == "paused":
|
|
args = [self._vmname, "resume"]
|
|
await self._execute("controlvm", args)
|
|
ip_address = "127.0.0.1"
|
|
try:
|
|
# get a random port on localhost
|
|
with socket.socket() as s:
|
|
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
|
|
s.bind((ip_address, 0))
|
|
api_port = s.getsockname()[1]
|
|
except OSError as e:
|
|
raise GNS3VMError("Error while getting random port: {}".format(e))
|
|
|
|
if (await self._check_vbox_port_forwarding()):
|
|
# delete the GNS3VM NAT port forwarding rule if it exists
|
|
log.info("Removing GNS3VM NAT port forwarding rule from interface {}".format(nat_interface_number))
|
|
await self._execute("controlvm", [self._vmname, "natpf{}".format(nat_interface_number), "delete", "GNS3VM"])
|
|
|
|
# add a GNS3VM NAT port forwarding rule to redirect 127.0.0.1 with random port to port 3080 in the VM
|
|
log.info("Adding GNS3VM NAT port forwarding rule with port {} to interface {}".format(api_port, nat_interface_number))
|
|
await self._execute("controlvm", [self._vmname, "natpf{}".format(nat_interface_number),
|
|
"GNS3VM,tcp,{},{},,3080".format(ip_address, api_port)])
|
|
|
|
self.ip_address = await self._get_ip(hostonly_interface_number, api_port)
|
|
self.port = 3080
|
|
log.info("GNS3 VM has been started with IP {}".format(self.ip_address))
|
|
self.running = True
|
|
|
|
async def _get_ip(self, hostonly_interface_number, api_port):
|
|
"""
|
|
Get the IP from VirtualBox.
|
|
|
|
Due to VirtualBox limitation the only way is to send request each
|
|
second to a GNS3 endpoint in order to get the list of the interfaces and
|
|
their IP and after that match it with VirtualBox host only.
|
|
"""
|
|
remaining_try = 300
|
|
while remaining_try > 0:
|
|
async with aiohttp.ClientSession() as session:
|
|
try:
|
|
async with session.get('http://127.0.0.1:{}/v2/compute/network/interfaces'.format(api_port)) as resp:
|
|
if resp.status < 300:
|
|
try:
|
|
json_data = await resp.json()
|
|
if json_data:
|
|
for interface in json_data:
|
|
if "name" in interface and interface["name"] == "eth{}".format(
|
|
hostonly_interface_number - 1):
|
|
if "ip_address" in interface and len(interface["ip_address"]) > 0:
|
|
return interface["ip_address"]
|
|
except ValueError:
|
|
pass
|
|
except (OSError, aiohttp.ClientError, TimeoutError, asyncio.TimeoutError):
|
|
pass
|
|
remaining_try -= 1
|
|
await asyncio.sleep(1)
|
|
raise GNS3VMError("Could not get the GNS3 VM ip make sure the VM receive an IP from VirtualBox")
|
|
|
|
async def suspend(self):
|
|
"""
|
|
Suspend the GNS3 VM.
|
|
"""
|
|
|
|
await self._execute("controlvm", [self._vmname, "savestate"], timeout=3)
|
|
log.info("GNS3 VM has been suspend")
|
|
self.running = False
|
|
|
|
async def stop(self):
|
|
"""
|
|
Stops the GNS3 VM.
|
|
"""
|
|
|
|
vm_state = await self._get_state()
|
|
if vm_state == "poweroff":
|
|
self.running = False
|
|
return
|
|
|
|
await self._execute("controlvm", [self._vmname, "acpipowerbutton"], timeout=3)
|
|
trial = 120
|
|
while True:
|
|
try:
|
|
vm_state = await self._get_state()
|
|
# During a small amount of time the command will fail
|
|
except GNS3VMError:
|
|
vm_state = "running"
|
|
if vm_state == "poweroff":
|
|
break
|
|
trial -= 1
|
|
if trial == 0:
|
|
await self._execute("controlvm", [self._vmname, "poweroff"], timeout=3)
|
|
break
|
|
await asyncio.sleep(1)
|
|
|
|
log.info("GNS3 VM has been stopped")
|
|
self.running = False
|
|
|
|
async def set_vcpus(self, vcpus):
|
|
"""
|
|
Set the number of vCPU cores for the GNS3 VM.
|
|
|
|
:param vcpus: number of vCPU cores
|
|
"""
|
|
|
|
await self._execute("modifyvm", [self._vmname, "--cpus", str(vcpus)], timeout=3)
|
|
log.info("GNS3 VM vCPU count set to {}".format(vcpus))
|
|
|
|
async def set_ram(self, ram):
|
|
"""
|
|
Set the RAM amount for the GNS3 VM.
|
|
|
|
:param ram: amount of memory
|
|
"""
|
|
|
|
await self._execute("modifyvm", [self._vmname, "--memory", str(ram)], timeout=3)
|
|
log.info("GNS3 VM RAM amount set to {}".format(ram))
|
|
|
|
async def set_hostonly_network(self, adapter_number, hostonly_network_name):
|
|
"""
|
|
Set a VirtualBox host-only network on a network adapter for the GNS3 VM.
|
|
|
|
:param adapter_number: network adapter number
|
|
:param hostonly_network_name: name of the VirtualBox host-only network
|
|
"""
|
|
|
|
await self._execute("modifyvm", [self._vmname, "--hostonlyadapter{}".format(adapter_number), hostonly_network_name], timeout=3)
|
|
log.info('VirtualBox host-only network "{}" set on network adapter {} for "{}"'.format(hostonly_network_name,
|
|
adapter_number,
|
|
self._vmname))
|