mirror of
https://github.com/GNS3/gns3-server.git
synced 2024-12-22 06:07:51 +00:00
223 lines
8.6 KiB
Python
223 lines
8.6 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2015 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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"""
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VirtualBox server module.
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"""
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import os
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import re
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import sys
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import shutil
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import asyncio
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import subprocess
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import logging
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log = logging.getLogger(__name__)
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from ..base_manager import BaseManager
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from .virtualbox_vm import VirtualBoxVM
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from .virtualbox_error import VirtualBoxError
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class VirtualBox(BaseManager):
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_NODE_CLASS = VirtualBoxVM
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def __init__(self):
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super().__init__()
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self._vboxmanage_path = None
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self._execute_lock = asyncio.Lock()
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@property
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def vboxmanage_path(self):
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"""
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Returns the path to VBoxManage.
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:returns: path
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"""
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return self._vboxmanage_path
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def find_vboxmanage(self):
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# look for VBoxManage
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vboxmanage_path = self.config.get_section_config("VirtualBox").get("vboxmanage_path")
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if vboxmanage_path:
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if not os.path.isabs(vboxmanage_path):
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vboxmanage_path = shutil.which(vboxmanage_path)
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else:
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log.info("A path to VBoxManage has not been configured, trying to find it...")
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if sys.platform.startswith("win"):
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if "VBOX_INSTALL_PATH" in os.environ:
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vboxmanage_path_windows = os.path.join(os.environ["VBOX_INSTALL_PATH"], "VBoxManage.exe")
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if os.path.exists(vboxmanage_path_windows):
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vboxmanage_path = vboxmanage_path_windows
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elif "VBOX_MSI_INSTALL_PATH" in os.environ:
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vboxmanage_path_windows = os.path.join(os.environ["VBOX_MSI_INSTALL_PATH"], "VBoxManage.exe")
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if os.path.exists(vboxmanage_path_windows):
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vboxmanage_path = vboxmanage_path_windows
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elif sys.platform.startswith("darwin"):
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vboxmanage_path_osx = "/Applications/VirtualBox.app/Contents/MacOS/VBoxManage"
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if os.path.exists(vboxmanage_path_osx):
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vboxmanage_path = vboxmanage_path_osx
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if not vboxmanage_path:
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vboxmanage_path = shutil.which("vboxmanage")
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if vboxmanage_path and not os.path.exists(vboxmanage_path):
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log.error("VBoxManage path '{}' doesn't exist".format(vboxmanage_path))
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if not vboxmanage_path:
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raise VirtualBoxError("Could not find VBoxManage, please reboot if VirtualBox has just been installed")
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if not os.path.isfile(vboxmanage_path):
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raise VirtualBoxError("VBoxManage '{}' is not accessible".format(vboxmanage_path))
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if not os.access(vboxmanage_path, os.X_OK):
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raise VirtualBoxError("VBoxManage is not executable")
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if os.path.basename(vboxmanage_path) not in ["VBoxManage", "VBoxManage.exe", "vboxmanage"]:
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raise VirtualBoxError("Invalid VBoxManage executable name {}".format(os.path.basename(vboxmanage_path)))
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self._vboxmanage_path = vboxmanage_path
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return vboxmanage_path
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async def execute(self, subcommand, args, timeout=60):
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# We use a lock prevent parallel execution due to strange errors
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# reported by a user and reproduced by us.
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# https://github.com/GNS3/gns3-gui/issues/261
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async with self._execute_lock:
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vboxmanage_path = self.vboxmanage_path
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if not vboxmanage_path:
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vboxmanage_path = self.find_vboxmanage()
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if not vboxmanage_path:
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raise VirtualBoxError("Could not find VBoxManage")
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command = [vboxmanage_path, "--nologo", subcommand]
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command.extend(args)
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command_string = " ".join(command)
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env = os.environ.copy()
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env["LANG"] = "en" # force english output because we rely on it to parse the output
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log.info("Executing VBoxManage with command: {}".format(command_string))
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try:
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process = await asyncio.create_subprocess_exec(
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*command,
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stdout=asyncio.subprocess.PIPE,
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stderr=asyncio.subprocess.PIPE,
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env=env
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)
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except (OSError, subprocess.SubprocessError) as e:
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raise VirtualBoxError("Could not execute VBoxManage: {}".format(e))
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try:
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stdout_data, stderr_data = await asyncio.wait_for(process.communicate(), timeout=timeout)
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except asyncio.TimeoutError:
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raise VirtualBoxError("VBoxManage has timed out after {} seconds!".format(timeout))
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if process.returncode:
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vboxmanage_error = stderr_data.decode("utf-8", errors="ignore")
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raise VirtualBoxError("VirtualBox has returned an error: {}".format(vboxmanage_error))
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return stdout_data.decode("utf-8", errors="ignore").splitlines()
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async def _find_inaccessible_hdd_files(self):
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"""
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Finds inaccessible disk files (to clean up the VirtualBox media manager)
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"""
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hdds = []
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try:
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properties = await self.execute("list", ["hdds"])
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# If VirtualBox is not available we have no inaccessible hdd
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except VirtualBoxError:
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return hdds
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flag_inaccessible = False
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for prop in properties:
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try:
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name, value = prop.split(':', 1)
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except ValueError:
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continue
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if name.strip() == "State" and value.strip() == "inaccessible":
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flag_inaccessible = True
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if flag_inaccessible and name.strip() == "Location":
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hdds.append(value.strip())
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flag_inaccessible = False
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return reversed(hdds)
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async def project_closed(self, project):
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"""
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Called when a project is closed.
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:param project: Project instance
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"""
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await super().project_closed(project)
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hdd_files_to_close = await self._find_inaccessible_hdd_files()
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for hdd_file in hdd_files_to_close:
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log.info("Closing VirtualBox VM disk file {}".format(os.path.basename(hdd_file)))
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try:
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await self.execute("closemedium", ["disk", hdd_file])
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except VirtualBoxError as e:
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log.warning("Could not close VirtualBox VM disk file {}: {}".format(os.path.basename(hdd_file), e))
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continue
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async def list_vms(self, allow_clone=False):
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"""
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Gets VirtualBox VM list.
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"""
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vbox_vms = []
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result = await self.execute("list", ["vms"])
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for line in result:
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if len(line) == 0 or line[0] != '"' or line[-1:] != "}":
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continue # Broken output (perhaps a carriage return in VM name)
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match = re.search(r"\"(.*)\"\ {(.*)}", line)
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if not match:
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continue
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vmname = match.group(1)
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uuid = match.group(2)
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if vmname == "<inaccessible>":
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continue # ignore inaccessible VMs
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extra_data = await self.execute("getextradata", [uuid, "GNS3/Clone"])
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if allow_clone or len(extra_data) == 0 or not extra_data[0].strip() == "Value: yes":
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# get the amount of RAM
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info_results = await self.execute("showvminfo", [uuid, "--machinereadable"])
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ram = 0
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for info in info_results:
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try:
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name, value = info.split('=', 1)
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if name.strip() == "memory":
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ram = int(value.strip())
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break
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except ValueError:
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continue
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vbox_vms.append({"vmname": vmname, "ram": ram})
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return vbox_vms
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@staticmethod
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def get_legacy_vm_workdir(legacy_vm_id, name):
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"""
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Returns the name of the legacy working directory name for a node.
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:param legacy_vm_id: legacy node identifier (not used)
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:param name: node name
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:returns: working directory name
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"""
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return os.path.join("vbox", "{}".format(name))
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