81 lines
2.5 KiB
C#
81 lines
2.5 KiB
C#
/*
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* Copyright (c) 2018 ETH Zürich, Educational Development and Technology (LET)
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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 System;
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using SafeExamBrowser.Contracts.Communication.Data;
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using SafeExamBrowser.Contracts.Communication.Events;
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using SafeExamBrowser.Contracts.Communication.Hosts;
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using SafeExamBrowser.Contracts.Logging;
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using SafeExamBrowser.Core.Communication.Hosts;
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namespace SafeExamBrowser.Client.Communication
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{
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internal class ClientHost : BaseHost, IClientHost
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{
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private bool allowConnection = true;
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private int processId;
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public Guid StartupToken { private get; set; }
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public event CommunicationEventHandler<PasswordRequestEventArgs> PasswordRequested;
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public event CommunicationEventHandler<ReconfigurationEventArgs> ReconfigurationDenied;
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public event CommunicationEventHandler Shutdown;
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public ClientHost(string address, IHostObjectFactory factory, ILogger logger, int processId) : base(address, factory, logger)
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{
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this.processId = processId;
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}
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protected override bool OnConnect(Guid? token)
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{
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var authenticated = StartupToken == token;
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var accepted = allowConnection && authenticated;
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if (accepted)
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{
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allowConnection = false;
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}
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return accepted;
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}
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protected override void OnDisconnect()
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{
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// Nothing to do here...
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}
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protected override Response OnReceive(Message message)
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{
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switch (message)
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{
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case PasswordRequestMessage p:
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PasswordRequested?.InvokeAsync(new PasswordRequestEventArgs { Purpose = p.Purpose, RequestId = p.RequestId });
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return new SimpleResponse(SimpleResponsePurport.Acknowledged);
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case ReconfigurationDeniedMessage r:
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ReconfigurationDenied?.InvokeAsync(new ReconfigurationEventArgs { ConfigurationPath = r.FilePath });
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return new SimpleResponse(SimpleResponsePurport.Acknowledged);
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}
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return new SimpleResponse(SimpleResponsePurport.UnknownMessage);
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}
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protected override Response OnReceive(SimpleMessagePurport message)
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{
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switch (message)
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{
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case SimpleMessagePurport.Authenticate:
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return new AuthenticationResponse { ProcessId = processId };
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case SimpleMessagePurport.Shutdown:
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Shutdown?.Invoke();
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return new SimpleResponse(SimpleResponsePurport.Acknowledged);
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}
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return new SimpleResponse(SimpleResponsePurport.UnknownMessage);
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}
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}
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}
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