mirror of
https://github.com/GNS3/gns3-server
synced 2024-12-27 09:18:09 +00:00
400 lines
14 KiB
Python
400 lines
14 KiB
Python
#!/usr/bin/env python
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#
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# Copyright (C) 2016 GNS3 Technologies Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import sys
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import copy
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import asyncio
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import aiohttp
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import ipaddress
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from ...utils.asyncio import locking
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from .vmware_gns3_vm import VMwareGNS3VM
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from .virtualbox_gns3_vm import VirtualBoxGNS3VM
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from .hyperv_gns3_vm import HyperVGNS3VM
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from .remote_gns3_vm import RemoteGNS3VM
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from .gns3_vm_error import GNS3VMError
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from ...version import __version__
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from ..compute import ComputeError
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import logging
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log = logging.getLogger(__name__)
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class GNS3VM:
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"""
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Proxy between the controller and the GNS3 VM engine
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"""
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def __init__(self, controller, settings={}):
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self._controller = controller
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# Keep instance of the loaded engines
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self._engines = {}
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self._settings = {
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"vmname": None,
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"when_exit": "stop",
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"headless": False,
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"enable": False,
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"engine": "vmware",
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"ram": 2048,
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"vcpus": 1
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}
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self.settings = settings
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def engine_list(self):
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"""
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:returns: Return list of engines supported by GNS3 for the GNS3VM
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"""
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download_url = "https://github.com/GNS3/gns3-gui/releases/download/v{version}/GNS3.VM.VMware.Workstation.{version}.zip".format(version=__version__)
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vmware_info = {
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"engine_id": "vmware",
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"description": 'VMware is the recommended choice for best performances.<br>The GNS3 VM can be <a href="{}">downloaded here</a>.'.format(download_url),
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"support_when_exit": True,
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"support_headless": True,
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"support_ram": True
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}
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if sys.platform.startswith("darwin"):
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vmware_info["name"] = "VMware Fusion (recommended)"
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else:
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vmware_info["name"] = "VMware Workstation / Player (recommended)"
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hyperv_info = {
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"engine_id": "hyper-v",
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"name": "Hyper-V",
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"description": 'Hyper-V support (Windows 10/Server 2016 and above). Nested virtualization must be supported and enabled (Intel processor only)',
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"support_when_exit": True,
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"support_headless": False,
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"support_ram": True
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}
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download_url = "https://github.com/GNS3/gns3-gui/releases/download/v{version}/GNS3.VM.VirtualBox.{version}.zip".format(version=__version__)
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virtualbox_info = {
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"engine_id": "virtualbox",
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"name": "VirtualBox (deprecated)",
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"description": 'VirtualBox doesn\'t support nested virtualization, this means Qemu based VMs will run extremely slowly. This feature is marked as deprecated and support may be removed from future GNS3 releases.<br>The GNS3 VM can be <a href="{}">downloaded here</a>'.format(download_url),
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"support_when_exit": True,
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"support_headless": True,
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"support_ram": True
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}
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remote_info = {
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"engine_id": "remote",
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"name": "Remote",
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"description": "Use a remote GNS3 server as the GNS3 VM.",
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"support_when_exit": False,
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"support_headless": False,
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"support_ram": False
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}
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engines = [vmware_info,
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virtualbox_info,
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remote_info]
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if sys.platform.startswith("win"):
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engines.append(hyperv_info)
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return engines
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def current_engine(self):
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return self._get_engine(self._settings["engine"])
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@property
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def engine(self):
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return self._settings["engine"]
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@property
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def ip_address(self):
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"""
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Returns the GNS3 VM IP address.
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:returns: VM IP address
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"""
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return self.current_engine().ip_address
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@property
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def running(self):
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"""
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Returns if the GNS3 VM is running.
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:returns: Boolean
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"""
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return self.current_engine().running
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@property
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def user(self):
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"""
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Returns the GNS3 VM user.
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:returns: VM user
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"""
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return self.current_engine().user
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@property
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def password(self):
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"""
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Returns the GNS3 VM password.
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:returns: VM password
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"""
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return self.current_engine().password
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@property
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def port(self):
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"""
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Returns the GNS3 VM port.
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:returns: VM port
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"""
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return self.current_engine().port
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@property
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def protocol(self):
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"""
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Returns the GNS3 VM protocol.
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:returns: VM protocol
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"""
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return self.current_engine().protocol
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@property
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def enable(self):
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"""
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The GNSVM is activated
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"""
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return self._settings.get("enable", False)
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@property
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def when_exit(self):
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"""
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What should be done when exit
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"""
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return self._settings["when_exit"]
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@property
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def settings(self):
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return self._settings
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@settings.setter
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def settings(self, val):
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self._settings.update(val)
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async def update_settings(self, settings):
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"""
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Update settings and will restart the VM if require
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"""
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new_settings = copy.copy(self._settings)
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new_settings.update(settings)
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if self.settings != new_settings:
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await self._stop()
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self._settings = settings
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self._controller.save()
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if self.enable:
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await self.start()
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else:
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# When user fix something on his system and try again
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if self.enable and not self.current_engine().running:
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await self.start()
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def _get_engine(self, engine):
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"""
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Load an engine
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"""
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if engine in self._engines:
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return self._engines[engine]
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if engine == "vmware":
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self._engines["vmware"] = VMwareGNS3VM(self._controller)
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return self._engines["vmware"]
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elif engine == "hyper-v":
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self._engines["hyper-v"] = HyperVGNS3VM(self._controller)
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return self._engines["hyper-v"]
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elif engine == "virtualbox":
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self._engines["virtualbox"] = VirtualBoxGNS3VM(self._controller)
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return self._engines["virtualbox"]
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elif engine == "remote":
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self._engines["remote"] = RemoteGNS3VM(self._controller)
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return self._engines["remote"]
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raise NotImplementedError("The engine {} for the GNS3 VM is not supported".format(engine))
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def __json__(self):
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return self._settings
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async def list(self, engine):
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"""
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List VMS for an engine
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"""
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engine = self._get_engine(engine)
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vms = []
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try:
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for vm in (await engine.list()):
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vms.append({"vmname": vm["vmname"]})
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except GNS3VMError as e:
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# We raise error only if user activated the GNS3 VM
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# otherwise you have noise when VMware is not installed
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if self.enable:
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raise e
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return vms
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async def auto_start_vm(self):
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"""
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Auto start the GNS3 VM if require
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"""
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if self.enable:
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try:
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await self.start()
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except GNS3VMError as e:
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# User will receive the error later when they will try to use the node
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try:
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compute = await self._controller.add_compute(compute_id="vm",
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name="GNS3 VM ({})".format(self.current_engine().vmname),
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host=None,
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force=True)
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compute.set_last_error(str(e))
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except aiohttp.web.HTTPConflict:
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pass
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log.error("Cannot start the GNS3 VM: {}".format(e))
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async def exit_vm(self):
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if self.enable:
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try:
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if self._settings["when_exit"] == "stop":
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await self._stop()
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elif self._settings["when_exit"] == "suspend":
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await self._suspend()
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except GNS3VMError as e:
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log.warning(str(e))
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@locking
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async def start(self):
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"""
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Start the GNS3 VM
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"""
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engine = self.current_engine()
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if not engine.running:
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if self._settings["vmname"] is None:
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return
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log.info("Start the GNS3 VM")
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engine.vmname = self._settings["vmname"]
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engine.ram = self._settings["ram"]
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engine.vcpus = self._settings["vcpus"]
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engine.headless = self._settings["headless"]
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compute = await self._controller.add_compute(compute_id="vm",
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name="GNS3 VM is starting ({})".format(engine.vmname),
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host=None,
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force=True,
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connect=False)
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try:
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await engine.start()
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except Exception as e:
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await self._controller.delete_compute("vm")
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log.error("Cannot start the GNS3 VM: {}".format(str(e)))
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await compute.update(name="GNS3 VM ({})".format(engine.vmname))
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compute.set_last_error(str(e))
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raise e
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await compute.connect() # we can connect now that the VM has started
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await compute.update(name="GNS3 VM ({})".format(engine.vmname),
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protocol=self.protocol,
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host=self.ip_address,
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port=self.port,
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user=self.user,
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password=self.password)
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# check if the VM is in the same subnet as the local server, start 10 seconds later to give
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# some time for the compute in the VM to be ready for requests
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asyncio.get_event_loop().call_later(10, lambda: asyncio.ensure_future(self._check_network(compute)))
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async def _check_network(self, compute):
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"""
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Check that the VM is in the same subnet as the local server
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"""
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try:
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vm_interfaces = await compute.interfaces()
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vm_interface_netmask = None
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for interface in vm_interfaces:
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if interface["ip_address"] == self.ip_address:
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vm_interface_netmask = interface["netmask"]
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break
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if vm_interface_netmask:
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vm_network = ipaddress.ip_interface("{}/{}".format(compute.host_ip, vm_interface_netmask)).network
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for compute_id in self._controller.computes:
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if compute_id == "local":
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compute = self._controller.get_compute(compute_id)
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interfaces = await compute.interfaces()
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netmask = None
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for interface in interfaces:
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if interface["ip_address"] == compute.host_ip:
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netmask = interface["netmask"]
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break
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if netmask:
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compute_network = ipaddress.ip_interface("{}/{}".format(compute.host_ip, netmask)).network
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if vm_network.compare_networks(compute_network) != 0:
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msg = "The GNS3 VM (IP={}, NETWORK={}) is not on the same network as the {} server (IP={}, NETWORK={}), please make sure the local server binding is in the same network as the GNS3 VM".format(self.ip_address,
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vm_network,
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compute_id,
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compute.host_ip,
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compute_network)
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self._controller.notification.controller_emit("log.warning", {"message": msg})
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except ComputeError as e:
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log.warning("Could not check the VM is in the same subnet as the local server: {}".format(e))
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except aiohttp.web.HTTPConflict as e:
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log.warning("Could not check the VM is in the same subnet as the local server: {}".format(e.text))
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@locking
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async def _suspend(self):
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"""
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Suspend the GNS3 VM
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"""
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engine = self.current_engine()
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if "vm" in self._controller.computes:
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await self._controller.delete_compute("vm")
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if engine.running:
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log.info("Suspend the GNS3 VM")
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await engine.suspend()
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@locking
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async def _stop(self):
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"""
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Stop the GNS3 VM
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"""
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engine = self.current_engine()
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if "vm" in self._controller.computes:
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await self._controller.delete_compute("vm")
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if engine.running:
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log.info("Stop the GNS3 VM")
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await engine.stop()
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