57 lines
2 KiB
C#
57 lines
2 KiB
C#
/*
|
|
* Copyright (c) 2020 ETH Zürich, Educational Development and Technology (LET)
|
|
*
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
*/
|
|
|
|
using SafeExamBrowser.Logging.Contracts;
|
|
using SafeExamBrowser.SystemComponents.Contracts;
|
|
using System.Globalization;
|
|
|
|
|
|
namespace SafeExamBrowser.SystemComponents
|
|
{
|
|
public class VirtualMachineDetector : IVirtualMachineDetector
|
|
{
|
|
private static readonly string[] PCI_VENDOR_BLACKLIST = { "vbox", "80ee", "qemu", "1af4", "1b36" }; //Virtualbox: VBOX, 80EE RedHat: QUEMU, 1AF4, 1B36
|
|
|
|
private ILogger logger;
|
|
private ISystemInfo systemInfo;
|
|
|
|
public VirtualMachineDetector(ILogger logger, ISystemInfo systemInfo)
|
|
{
|
|
this.logger = logger;
|
|
this.systemInfo = systemInfo;
|
|
}
|
|
|
|
public bool IsVirtualMachine()
|
|
{
|
|
var isVirtualMachine = false;
|
|
var manufacturer = systemInfo.Manufacturer.ToLower();
|
|
var model = systemInfo.Model.ToLower();
|
|
var macAddress = systemInfo.MacAddress;
|
|
|
|
isVirtualMachine |= manufacturer.Contains("microsoft corporation") && !model.Contains("surface");
|
|
isVirtualMachine |= manufacturer.Contains("vmware");
|
|
isVirtualMachine |= manufacturer.Contains("parallels software");
|
|
isVirtualMachine |= model.Contains("virtualbox");
|
|
isVirtualMachine |= manufacturer.Contains("qemu");
|
|
|
|
isVirtualMachine |= ((byte.Parse(macAddress[1].ToString(), NumberStyles.HexNumber) & 2) == 2 || macAddress.StartsWith("080027"));
|
|
/*
|
|
using (var searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT DeviceID FROM Win32_PnPEntity"))
|
|
|
|
foreach (ManagementObject queryObj in searcher.Get())
|
|
{
|
|
isVirtualMachine |= pciVendorBlacklist.Any(System.Convert.ToString(queryObj.Properties.Cast<PropertyData>().First().Value).ToLower().Contains);
|
|
|
|
}
|
|
*/
|
|
logger.Debug($"Computer '{systemInfo.Name}' appears to {(isVirtualMachine ? "" : "not ")}be a virtual machine.");
|
|
|
|
return isVirtualMachine;
|
|
}
|
|
}
|
|
}
|