72 lines
2.1 KiB
C#
72 lines
2.1 KiB
C#
/*
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* Copyright (c) 2024 ETH Zürich, IT Services
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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using SafeExamBrowser.Core.Contracts.OperationModel;
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using SafeExamBrowser.Core.Contracts.OperationModel.Events;
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using SafeExamBrowser.I18n.Contracts;
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using SafeExamBrowser.Logging.Contracts;
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using SafeExamBrowser.Monitoring.Contracts;
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using SafeExamBrowser.Runtime.Operations.Events;
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using SafeExamBrowser.Settings.Security;
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using SafeExamBrowser.UserInterface.Contracts.MessageBox;
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namespace SafeExamBrowser.Runtime.Operations
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{
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internal class VirtualMachineOperation : SessionOperation
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{
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private readonly IVirtualMachineDetector detector;
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private readonly ILogger logger;
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public override event ActionRequiredEventHandler ActionRequired;
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public override event StatusChangedEventHandler StatusChanged;
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public VirtualMachineOperation(IVirtualMachineDetector detector, ILogger logger, SessionContext context) : base(context)
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{
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this.detector = detector;
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this.logger = logger;
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}
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public override OperationResult Perform()
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{
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return ValidatePolicy();
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}
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public override OperationResult Repeat()
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{
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return ValidatePolicy();
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}
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public override OperationResult Revert()
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{
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return OperationResult.Success;
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}
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private OperationResult ValidatePolicy()
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{
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logger.Info($"Validating virtual machine policy...");
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StatusChanged?.Invoke(TextKey.OperationStatus_ValidateVirtualMachinePolicy);
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if (Context.Next.Settings.Security.VirtualMachinePolicy == VirtualMachinePolicy.Deny && detector.IsVirtualMachine())
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{
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var args = new MessageEventArgs
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{
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Icon = MessageBoxIcon.Error,
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Message = TextKey.MessageBox_VirtualMachineNotAllowed,
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Title = TextKey.MessageBox_VirtualMachineNotAllowedTitle
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};
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logger.Error("Detected virtual machine while SEB is not allowed to be run in a virtual machine! Aborting...");
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ActionRequired?.Invoke(args);
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return OperationResult.Aborted;
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}
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return OperationResult.Success;
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}
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}
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}
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