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SEBSP-61: Implemented basic metadata collection & transmission.

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This commit is contained in:
Damian Büchel 2024-02-13 11:04:36 +01:00
parent cb81906945
commit 731a748552
46 changed files with 557 additions and 132 deletions
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4
SafeExamBrowser.Applications.Contracts/IApplication.cs
View file

@ -16,7 +16,7 @@ namespace SafeExamBrowser.Applications.Contracts
/// <summary>
/// Controls the lifetime and functionality of an application.
/// </summary>
public interface IApplication
public interface IApplication<out TWindow> where TWindow : IApplicationWindow
{
/// <summary>
/// Indicates whether the application should be automatically started.
@ -51,7 +51,7 @@ namespace SafeExamBrowser.Applications.Contracts
/// <summary>
/// Returns all windows of the application.
/// </summary>
IEnumerable<IApplicationWindow> GetWindows();
IEnumerable<TWindow> GetWindows();
/// <summary>
/// Performs any initialization work, if necessary.

2
SafeExamBrowser.Applications.Contracts/IApplicationFactory.cs
View file

@ -18,6 +18,6 @@ namespace SafeExamBrowser.Applications.Contracts
/// <summary>
/// Attempts to create an application according to the given settings.
/// </summary>
FactoryResult TryCreate(WhitelistApplication settings, out IApplication application);
FactoryResult TryCreate(WhitelistApplication settings, out IApplication<IApplicationWindow> application);
}
}

2
SafeExamBrowser.Applications.Contracts/IApplicationWindow.cs
View file

@ -13,7 +13,7 @@ using SafeExamBrowser.Core.Contracts.Resources.Icons;
namespace SafeExamBrowser.Applications.Contracts
{
/// <summary>
/// Defines a window of an <see cref="IApplication"/>.
/// Defines a window of an <see cref="IApplication{TWindow}"/>.
/// </summary>
public interface IApplicationWindow
{

4
SafeExamBrowser.Applications/ApplicationFactory.cs
View file

@ -40,7 +40,7 @@ namespace SafeExamBrowser.Applications
this.registry = registry;
}
public FactoryResult TryCreate(WhitelistApplication settings, out IApplication application)
public FactoryResult TryCreate(WhitelistApplication settings, out IApplication<IApplicationWindow> application)
{
var name = $"'{settings.DisplayName}' ({settings.ExecutableName})";
@ -72,7 +72,7 @@ namespace SafeExamBrowser.Applications
return FactoryResult.Error;
}
private IApplication BuildApplication(string executablePath, WhitelistApplication settings)
private IApplication<IApplicationWindow> BuildApplication(string executablePath, WhitelistApplication settings)
{
const int ONE_SECOND = 1000;

2
SafeExamBrowser.Applications/ExternalApplication.cs
View file

@ -19,7 +19,7 @@ using SafeExamBrowser.WindowsApi.Contracts;
namespace SafeExamBrowser.Applications
{
internal class ExternalApplication : IApplication
internal class ExternalApplication : IApplication<IApplicationWindow>
{
private readonly object @lock = new object();

2
SafeExamBrowser.Browser.Contracts/IBrowserApplication.cs
View file

@ -14,7 +14,7 @@ namespace SafeExamBrowser.Browser.Contracts
/// <summary>
/// Controls the lifetime and functionality of the browser application.
/// </summary>
public interface IBrowserApplication : IApplication
public interface IBrowserApplication : IApplication<IBrowserWindow>
{
/// <summary>
/// Event fired when the browser application detects a download request for an application configuration file.

28
SafeExamBrowser.Browser.Contracts/IBrowserWindow.cs Normal file
View file

@ -0,0 +1,28 @@
/*
* Copyright (c) 2023 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.Applications.Contracts;
namespace SafeExamBrowser.Browser.Contracts
{
/// <summary>
/// Defines a window of the <see cref="IBrowserApplication"/>.
/// </summary>
public interface IBrowserWindow : IApplicationWindow
{
/// <summary>
/// Indicates whether the window is the main browser window.
/// </summary>
bool IsMainWindow { get; }
/// <summary>
/// The currently loaded URL, or <c>default(string)</c> in case no navigation has happened yet.
/// </summary>
string Url { get; }
}
}

1
SafeExamBrowser.Browser.Contracts/SafeExamBrowser.Browser.Contracts.csproj
View file

@ -67,6 +67,7 @@
<Compile Include="Filters\IRuleFactory.cs" />
<Compile Include="Filters\Request.cs" />
<Compile Include="IBrowserApplication.cs" />
<Compile Include="IBrowserWindow.cs" />
<Compile Include="Properties\AssemblyInfo.cs" />
</ItemGroup>
<ItemGroup>

5
SafeExamBrowser.Browser/BrowserApplication.cs
View file

@ -14,7 +14,6 @@ using System.Linq;
using System.Threading;
using CefSharp;
using CefSharp.WinForms;
using SafeExamBrowser.Applications.Contracts;
using SafeExamBrowser.Applications.Contracts.Events;
using SafeExamBrowser.Browser.Contracts;
using SafeExamBrowser.Browser.Contracts.Events;
@ -99,9 +98,9 @@ namespace SafeExamBrowser.Browser
});
}
public IEnumerable<IApplicationWindow> GetWindows()
public IEnumerable<IBrowserWindow> GetWindows()
{
return new List<IApplicationWindow>(windows);
return new List<IBrowserWindow>(windows);
}
public void Initialize()

18
SafeExamBrowser.Browser/BrowserWindow.cs
View file

@ -13,7 +13,6 @@ using System.Threading.Tasks;
using CefSharp;
using CefSharp.WinForms.Handler;
using CefSharp.WinForms.Host;
using SafeExamBrowser.Applications.Contracts;
using SafeExamBrowser.Applications.Contracts.Events;
using SafeExamBrowser.Browser.Contracts.Events;
using SafeExamBrowser.Browser.Contracts.Filters;
@ -43,7 +42,7 @@ using TitleChangedEventHandler = SafeExamBrowser.Applications.Contracts.Events.T
namespace SafeExamBrowser.Browser
{
internal class BrowserWindow : IApplicationWindow
internal class BrowserWindow : Contracts.IBrowserWindow
{
private const string CLEAR_FIND_TERM = "thisisahacktoclearthesearchresultsasitappearsthatthereisnosuchfunctionalityincef";
private const double ZOOM_FACTOR = 0.2;
@ -52,7 +51,6 @@ namespace SafeExamBrowser.Browser
private readonly IFileSystemDialog fileSystemDialog;
private readonly IHashAlgorithm hashAlgorithm;
private readonly HttpClient httpClient;
private readonly bool isMainWindow;
private readonly IKeyGenerator keyGenerator;
private readonly IModuleLogger logger;
private readonly IMessageBox messageBox;
@ -69,7 +67,7 @@ namespace SafeExamBrowser.Browser
private WindowSettings WindowSettings
{
get { return isMainWindow ? settings.MainWindow : settings.AdditionalWindow; }
get { return IsMainWindow ? settings.MainWindow : settings.AdditionalWindow; }
}
internal IBrowserControl Control { get; private set; }
@ -77,7 +75,9 @@ namespace SafeExamBrowser.Browser
public IntPtr Handle { get; private set; }
public IconResource Icon { get; private set; }
public bool IsMainWindow { get; private set; }
public string Title { get; private set; }
public string Url { get; private set; }
internal event WindowClosedEventHandler Closed;
internal event DownloadRequestedEventHandler ConfigurationDownloadRequested;
@ -110,7 +110,7 @@ namespace SafeExamBrowser.Browser
this.hashAlgorithm = hashAlgorithm;
this.httpClient = new HttpClient();
this.Id = id;
this.isMainWindow = isMainWindow;
this.IsMainWindow = isMainWindow;
this.keyGenerator = keyGenerator;
this.logger = logger;
this.messageBox = messageBox;
@ -162,7 +162,7 @@ namespace SafeExamBrowser.Browser
Icon = new BrowserIconResource();
if (isMainWindow)
if (IsMainWindow)
{
cefSharpControl = new CefSharpBrowserControl(CreateLifeSpanHandlerForMainWindow(), startUrl);
}
@ -203,7 +203,7 @@ namespace SafeExamBrowser.Browser
internal void InitializeWindow()
{
window = uiFactory.CreateBrowserWindow(Control, settings, isMainWindow, this.logger);
window = uiFactory.CreateBrowserWindow(Control, settings, IsMainWindow, this.logger);
window.AddressChanged += Window_AddressChanged;
window.BackwardNavigationRequested += Window_BackwardNavigationRequested;
window.Closed += Window_Closed;
@ -267,6 +267,8 @@ namespace SafeExamBrowser.Browser
private void Control_AddressChanged(string address)
{
logger.Info($"Navigated{(WindowSettings.UrlPolicy.CanLog() ? $" to '{address}'" : "")}.");
Url = address;
window.UpdateAddress(address);
if (WindowSettings.UrlPolicy == UrlPolicy.Always || WindowSettings.UrlPolicy == UrlPolicy.BeforeTitle)
@ -440,7 +442,7 @@ namespace SafeExamBrowser.Browser
private void HomeNavigationRequested()
{
if (isMainWindow && (settings.UseStartUrlAsHomeUrl || !string.IsNullOrWhiteSpace(settings.HomeUrl)))
if (IsMainWindow && (settings.UseStartUrlAsHomeUrl || !string.IsNullOrWhiteSpace(settings.HomeUrl)))
{
var navigate = false;
var url = settings.UseStartUrlAsHomeUrl ? settings.StartUrl : settings.HomeUrl;

13
SafeExamBrowser.Client.UnitTests/ClientControllerTests.cs
View file

@ -41,6 +41,7 @@ using SafeExamBrowser.UserInterface.Contracts.Shell;
using SafeExamBrowser.UserInterface.Contracts.Windows;
using SafeExamBrowser.UserInterface.Contracts.Windows.Data;
using SafeExamBrowser.WindowsApi.Contracts;
using IWindow = SafeExamBrowser.UserInterface.Contracts.Windows.IWindow;
namespace SafeExamBrowser.Client.UnitTests
{
@ -603,7 +604,7 @@ namespace SafeExamBrowser.Client.UnitTests
[TestMethod]
public void Operations_MustAskForApplicationPath()
{
var args = new ApplicationNotFoundEventArgs(default(string), default(string));
var args = new ApplicationNotFoundEventArgs(default, default);
var result = new FileSystemDialogResult { FullPath = @"C:\Some\random\path\", Success = true };
fileSystemDialog.Setup(d => d.Show(
@ -627,7 +628,7 @@ namespace SafeExamBrowser.Client.UnitTests
[TestMethod]
public void Operations_MustAbortAskingForApplicationPath()
{
var args = new ApplicationNotFoundEventArgs(default(string), default(string));
var args = new ApplicationNotFoundEventArgs(default, default);
var result = new FileSystemDialogResult { Success = false };
fileSystemDialog.Setup(d => d.Show(
@ -651,7 +652,7 @@ namespace SafeExamBrowser.Client.UnitTests
[TestMethod]
public void Operations_MustInformAboutFailedApplicationInitialization()
{
var args = new ApplicationInitializationFailedEventArgs(default(string), default(string), FactoryResult.NotFound);
var args = new ApplicationInitializationFailedEventArgs(default, default, FactoryResult.NotFound);
text.SetReturnsDefault(string.Empty);
sut.TryStart();
@ -1172,9 +1173,9 @@ namespace SafeExamBrowser.Client.UnitTests
[TestMethod]
public void Startup_MustAutoStartApplications()
{
var application1 = new Mock<IApplication>();
var application2 = new Mock<IApplication>();
var application3 = new Mock<IApplication>();
var application1 = new Mock<IApplication<IApplicationWindow>>();
var application2 = new Mock<IApplication<IApplicationWindow>>();
var application3 = new Mock<IApplication<IApplicationWindow>>();
application1.SetupGet(a => a.AutoStart).Returns(true);
application2.SetupGet(a => a.AutoStart).Returns(false);

32
SafeExamBrowser.Client.UnitTests/Operations/ApplicationOperationTests.cs
View file

@ -55,7 +55,7 @@ namespace SafeExamBrowser.Client.UnitTests.Operations
var initialization = new InitializationResult();
var args = default(ActionRequiredEventArgs);
initialization.RunningApplications.Add(new RunningApplication(default(string)));
initialization.RunningApplications.Add(new RunningApplication(default));
monitor.Setup(m => m.Initialize(It.IsAny<ApplicationSettings>())).Returns(initialization);
sut.ActionRequired += (a) =>
{
@ -79,7 +79,7 @@ namespace SafeExamBrowser.Client.UnitTests.Operations
[TestMethod]
public void Perform_MustAbortIfUserCancelsApplicationLocationSelection()
{
var application = new Mock<IApplication>().Object;
var application = new Mock<IApplication<IApplicationWindow>>().Object;
var applicationSettings = new WhitelistApplication { AllowCustomPath = true };
var args = default(ActionRequiredEventArgs);
@ -107,7 +107,7 @@ namespace SafeExamBrowser.Client.UnitTests.Operations
[TestMethod]
public void Perform_MustAllowUserToChooseApplicationLocation()
{
var application = new Mock<IApplication>().Object;
var application = new Mock<IApplication<IApplicationWindow>>().Object;
var applicationSettings = new WhitelistApplication { AllowCustomPath = true };
var args = default(ActionRequiredEventArgs);
var attempt = 0;
@ -138,7 +138,7 @@ namespace SafeExamBrowser.Client.UnitTests.Operations
[TestMethod]
public void Perform_MustDenyApplicationLocationSelection()
{
var application = new Mock<IApplication>().Object;
var application = new Mock<IApplication<IApplicationWindow>>().Object;
var applicationSettings = new WhitelistApplication { AllowCustomPath = false };
var args = default(ActionRequiredEventArgs);
@ -169,7 +169,7 @@ namespace SafeExamBrowser.Client.UnitTests.Operations
var initialization = new InitializationResult();
var args = default(ActionRequiredEventArgs);
initialization.FailedAutoTerminations.Add(new RunningApplication(default(string)));
initialization.FailedAutoTerminations.Add(new RunningApplication(default));
monitor.Setup(m => m.Initialize(It.IsAny<ApplicationSettings>())).Returns(initialization);
sut.ActionRequired += (a) => args = a;
@ -185,7 +185,7 @@ namespace SafeExamBrowser.Client.UnitTests.Operations
[TestMethod]
public void Perform_MustFailIfTerminationFails()
{
var application = new RunningApplication(default(string));
var application = new RunningApplication(default);
var initialization = new InitializationResult();
var args = new List<ActionRequiredEventArgs>();
@ -215,7 +215,7 @@ namespace SafeExamBrowser.Client.UnitTests.Operations
[TestMethod]
public void Perform_MustIndicateApplicationInitializationFailure()
{
var application = new Mock<IApplication>().Object;
var application = new Mock<IApplication<IApplicationWindow>>().Object;
var applicationSettings = new WhitelistApplication();
var args = default(ActionRequiredEventArgs);
@ -235,9 +235,9 @@ namespace SafeExamBrowser.Client.UnitTests.Operations
[TestMethod]
public void Perform_MustInitializeApplications()
{
var application1 = new Mock<IApplication>().Object;
var application2 = new Mock<IApplication>().Object;
var application3 = new Mock<IApplication>().Object;
var application1 = new Mock<IApplication<IApplicationWindow>>().Object;
var application2 = new Mock<IApplication<IApplicationWindow>>().Object;
var application3 = new Mock<IApplication<IApplicationWindow>>().Object;
var application1Settings = new WhitelistApplication();
var application2Settings = new WhitelistApplication();
var application3Settings = new WhitelistApplication();
@ -297,9 +297,9 @@ namespace SafeExamBrowser.Client.UnitTests.Operations
[TestMethod]
public void Perform_MustTerminateRunningApplications()
{
var application1 = new RunningApplication(default(string));
var application2 = new RunningApplication(default(string));
var application3 = new RunningApplication(default(string));
var application1 = new RunningApplication(default);
var application2 = new RunningApplication(default);
var application3 = new RunningApplication(default);
var initialization = new InitializationResult();
var args = default(ActionRequiredEventArgs);
@ -362,9 +362,9 @@ namespace SafeExamBrowser.Client.UnitTests.Operations
[TestMethod]
public void Revert_MustTerminateApplications()
{
var application1 = new Mock<IApplication>();
var application2 = new Mock<IApplication>();
var application3 = new Mock<IApplication>();
var application1 = new Mock<IApplication<IApplicationWindow>>();
var application2 = new Mock<IApplication<IApplicationWindow>>();
var application3 = new Mock<IApplication<IApplicationWindow>>();
context.Applications.Add(application1.Object);
context.Applications.Add(application2.Object);

4
SafeExamBrowser.Client.UnitTests/Operations/BrowserOperationTests.cs
View file

@ -58,7 +58,7 @@ namespace SafeExamBrowser.Client.UnitTests.Operations
sut.Perform();
browser.Verify(c => c.Initialize(), Times.Once);
taskview.Verify(t => t.Add(It.Is<IApplication>(a => a == context.Browser)), Times.Once);
taskview.Verify(t => t.Add(It.Is<IApplication<IApplicationWindow>>(a => a == context.Browser)), Times.Once);
}
[TestMethod]
@ -73,7 +73,7 @@ namespace SafeExamBrowser.Client.UnitTests.Operations
actionCenter.Verify(a => a.AddApplicationControl(It.IsAny<IApplicationControl>(), true), Times.Never);
browser.Verify(c => c.Initialize(), Times.Never);
taskbar.Verify(t => t.AddApplicationControl(It.IsAny<IApplicationControl>(), true), Times.Never);
taskview.Verify(t => t.Add(It.Is<IApplication>(a => a == context.Browser)), Times.Never);
taskview.Verify(t => t.Add(It.Is<IApplication<IApplicationWindow>>(a => a == context.Browser)), Times.Never);
}
[TestMethod]

48
SafeExamBrowser.Client.UnitTests/Operations/ShellOperationTests.cs
View file

@ -116,11 +116,11 @@ namespace SafeExamBrowser.Client.UnitTests.Operations
[TestMethod]
public void Perform_MustInitializeApplications()
{
var application1 = new Mock<IApplication>();
var application1 = new Mock<IApplication<IApplicationWindow>>();
var application1Settings = new WhitelistApplication { ShowInShell = true };
var application2 = new Mock<IApplication>();
var application2 = new Mock<IApplication<IApplicationWindow>>();
var application2Settings = new WhitelistApplication { ShowInShell = false };
var application3 = new Mock<IApplication>();
var application3 = new Mock<IApplication<IApplicationWindow>>();
var application3Settings = new WhitelistApplication { ShowInShell = true };
application1.SetupGet(a => a.Id).Returns(application1Settings.Id);
@ -140,25 +140,25 @@ namespace SafeExamBrowser.Client.UnitTests.Operations
actionCenter.Verify(a => a.AddApplicationControl(It.IsAny<IApplicationControl>(), false), Times.Exactly(2));
taskbar.Verify(t => t.AddApplicationControl(It.IsAny<IApplicationControl>(), false), Times.Exactly(2));
taskview.Verify(t => t.Add(It.Is<IApplication>(a => a == application1.Object)), Times.Once);
taskview.Verify(t => t.Add(It.Is<IApplication>(a => a == application2.Object)), Times.Once);
taskview.Verify(t => t.Add(It.Is<IApplication>(a => a == application3.Object)), Times.Once);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication>(a => a == application1.Object), Location.ActionCenter), Times.Once);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication>(a => a == application1.Object), Location.Taskbar), Times.Once);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication>(a => a == application2.Object), Location.ActionCenter), Times.Never);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication>(a => a == application2.Object), Location.Taskbar), Times.Never);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication>(a => a == application3.Object), Location.ActionCenter), Times.Once);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication>(a => a == application3.Object), Location.Taskbar), Times.Once);
taskview.Verify(t => t.Add(It.Is<IApplication<IApplicationWindow>>(a => a == application1.Object)), Times.Once);
taskview.Verify(t => t.Add(It.Is<IApplication<IApplicationWindow>>(a => a == application2.Object)), Times.Once);
taskview.Verify(t => t.Add(It.Is<IApplication<IApplicationWindow>>(a => a == application3.Object)), Times.Once);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication<IApplicationWindow>>(a => a == application1.Object), Location.ActionCenter), Times.Once);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication<IApplicationWindow>>(a => a == application1.Object), Location.Taskbar), Times.Once);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication<IApplicationWindow>>(a => a == application2.Object), Location.ActionCenter), Times.Never);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication<IApplicationWindow>>(a => a == application2.Object), Location.Taskbar), Times.Never);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication<IApplicationWindow>>(a => a == application3.Object), Location.ActionCenter), Times.Once);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication<IApplicationWindow>>(a => a == application3.Object), Location.Taskbar), Times.Once);
}
[TestMethod]
public void Perform_MustNotAddApplicationsToShellIfNotEnabled()
{
var application1 = new Mock<IApplication>();
var application1 = new Mock<IApplication<IApplicationWindow>>();
var application1Settings = new WhitelistApplication { ShowInShell = true };
var application2 = new Mock<IApplication>();
var application2 = new Mock<IApplication<IApplicationWindow>>();
var application2Settings = new WhitelistApplication { ShowInShell = true };
var application3 = new Mock<IApplication>();
var application3 = new Mock<IApplication<IApplicationWindow>>();
var application3Settings = new WhitelistApplication { ShowInShell = true };
application1.SetupGet(a => a.Id).Returns(application1Settings.Id);
@ -178,15 +178,15 @@ namespace SafeExamBrowser.Client.UnitTests.Operations
actionCenter.Verify(a => a.AddApplicationControl(It.IsAny<IApplicationControl>(), false), Times.Never);
taskbar.Verify(t => t.AddApplicationControl(It.IsAny<IApplicationControl>(), false), Times.Never);
taskview.Verify(t => t.Add(It.Is<IApplication>(a => a == application1.Object)), Times.Once);
taskview.Verify(t => t.Add(It.Is<IApplication>(a => a == application2.Object)), Times.Once);
taskview.Verify(t => t.Add(It.Is<IApplication>(a => a == application3.Object)), Times.Once);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication>(a => a == application1.Object), Location.ActionCenter), Times.Never);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication>(a => a == application1.Object), Location.Taskbar), Times.Never);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication>(a => a == application2.Object), Location.ActionCenter), Times.Never);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication>(a => a == application2.Object), Location.Taskbar), Times.Never);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication>(a => a == application3.Object), Location.ActionCenter), Times.Never);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication>(a => a == application3.Object), Location.Taskbar), Times.Never);
taskview.Verify(t => t.Add(It.Is<IApplication<IApplicationWindow>>(a => a == application1.Object)), Times.Once);
taskview.Verify(t => t.Add(It.Is<IApplication<IApplicationWindow>>(a => a == application2.Object)), Times.Once);
taskview.Verify(t => t.Add(It.Is<IApplication<IApplicationWindow>>(a => a == application3.Object)), Times.Once);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication<IApplicationWindow>>(a => a == application1.Object), Location.ActionCenter), Times.Never);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication<IApplicationWindow>>(a => a == application1.Object), Location.Taskbar), Times.Never);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication<IApplicationWindow>>(a => a == application2.Object), Location.ActionCenter), Times.Never);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication<IApplicationWindow>>(a => a == application2.Object), Location.Taskbar), Times.Never);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication<IApplicationWindow>>(a => a == application3.Object), Location.ActionCenter), Times.Never);
uiFactory.Verify(f => f.CreateApplicationControl(It.Is<IApplication<IApplicationWindow>>(a => a == application3.Object), Location.Taskbar), Times.Never);
}
[TestMethod]

4
SafeExamBrowser.Client/ClientContext.cs
View file

@ -32,7 +32,7 @@ namespace SafeExamBrowser.Client
/// <summary>
/// All applications allowed for the current session.
/// </summary>
internal IList<IApplication> Applications { get; }
internal IList<IApplication<IApplicationWindow>> Applications { get; }
/// <summary>
/// The global application configuration.
@ -72,7 +72,7 @@ namespace SafeExamBrowser.Client
internal ClientContext()
{
Activators = new List<IActivator>();
Applications = new List<IApplication>();
Applications = new List<IApplication<IApplicationWindow>>();
}
}
}

16
SafeExamBrowser.Client/CompositionRoot.cs
View file

@ -73,6 +73,7 @@ namespace SafeExamBrowser.Client
private UserInterfaceMode uiMode;
private IActionCenter actionCenter;
private ApplicationMonitor applicationMonitor;
private ILogger logger;
private IMessageBox messageBox;
private INativeMethods nativeMethods;
@ -95,6 +96,7 @@ namespace SafeExamBrowser.Client
InitializeLogging();
InitializeText();
var processFactory = new ProcessFactory(ModuleLogger(nameof(ProcessFactory)));
var registry = new Registry(ModuleLogger(nameof(Registry)));
uiFactory = BuildUserInterfaceFactory();
@ -102,6 +104,7 @@ namespace SafeExamBrowser.Client
context = new ClientContext();
messageBox = BuildMessageBox();
nativeMethods = new NativeMethods();
applicationMonitor = new ApplicationMonitor(TWO_SECONDS, ModuleLogger(nameof(ApplicationMonitor)), nativeMethods, processFactory);
networkAdapter = new NetworkAdapter(ModuleLogger(nameof(NetworkAdapter)), nativeMethods);
runtimeProxy = new RuntimeProxy(runtimeHostUri, new ProxyObjectFactory(), ModuleLogger(nameof(RuntimeProxy)), Interlocutor.Client);
systemInfo = new SystemInfo(registry);
@ -109,8 +112,6 @@ namespace SafeExamBrowser.Client
taskview = uiFactory.CreateTaskview();
userInfo = new UserInfo(ModuleLogger(nameof(UserInfo)));
var processFactory = new ProcessFactory(ModuleLogger(nameof(ProcessFactory)));
var applicationMonitor = new ApplicationMonitor(TWO_SECONDS, ModuleLogger(nameof(ApplicationMonitor)), nativeMethods, processFactory);
var applicationFactory = new ApplicationFactory(applicationMonitor, ModuleLogger(nameof(ApplicationFactory)), nativeMethods, processFactory, new Registry(ModuleLogger(nameof(Registry))));
var clipboard = new Clipboard(ModuleLogger(nameof(Clipboard)), nativeMethods);
var displayMonitor = new DisplayMonitor(ModuleLogger(nameof(DisplayMonitor)), nativeMethods, systemInfo);
@ -288,7 +289,16 @@ namespace SafeExamBrowser.Client
private IOperation BuildProctoringOperation()
{
var controller = new ProctoringController(context.AppConfig, new FileSystem(), ModuleLogger(nameof(ProctoringController)), nativeMethods, context.Server, text, uiFactory);
var controller = new ProctoringController(
context.AppConfig,
applicationMonitor,
context.Browser,
new FileSystem(),
ModuleLogger(nameof(ProctoringController)),
nativeMethods,
context.Server,
text,
uiFactory);
var operation = new ProctoringOperation(actionCenter, context, controller, logger, taskbar, uiFactory);
return operation;

10
SafeExamBrowser.Client/Operations/BrowserOperation.cs
View file

@ -17,11 +17,11 @@ namespace SafeExamBrowser.Client.Operations
{
internal class BrowserOperation : ClientOperation
{
private IActionCenter actionCenter;
private ILogger logger;
private ITaskbar taskbar;
private ITaskview taskview;
private IUserInterfaceFactory uiFactory;
private readonly IActionCenter actionCenter;
private readonly ILogger logger;
private readonly ITaskbar taskbar;
private readonly ITaskview taskview;
private readonly IUserInterfaceFactory uiFactory;
public override event ActionRequiredEventHandler ActionRequired { add { } remove { } }
public override event StatusChangedEventHandler StatusChanged;

34
SafeExamBrowser.Monitoring.Contracts/Applications/ActiveApplication.cs Normal file
View file

@ -0,0 +1,34 @@
/*
* Copyright (c) 2023 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.WindowsApi.Contracts;
namespace SafeExamBrowser.Monitoring.Contracts.Applications
{
/// <summary>
/// Provides information about the currently active application.
/// </summary>
public class ActiveApplication
{
/// <summary>
/// The process which owns the currently active window.
/// </summary>
public IProcess Process { get; }
/// <summary>
/// The currently active window (i.e. the window which currently has input focus).
/// </summary>
public IWindow Window { get; }
public ActiveApplication(IProcess process, IWindow window)
{
Process = process;
Window = window;
}
}
}

6
SafeExamBrowser.Monitoring.Contracts/Applications/IApplicationMonitor.cs
View file

@ -46,6 +46,12 @@ namespace SafeExamBrowser.Monitoring.Contracts.Applications
/// </summary>
void Stop();
/// <summary>
/// Attempts to retrieve the currently active application (i.e. the application which currently has input focus). Returns <c>true</c> if
/// successful, otherwise <c>false</c>.
/// </summary>
bool TryGetActiveApplication(out ActiveApplication application);
/// <summary>
/// Attempts to terminate all processes of the specified application. Returns <c>true</c> if successful, otherwise <c>false</c>.
/// </summary>

28
SafeExamBrowser.Monitoring.Contracts/Applications/IWindow.cs Normal file
View file

@ -0,0 +1,28 @@
/*
* Copyright (c) 2023 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 System;
namespace SafeExamBrowser.Monitoring.Contracts.Applications
{
/// <summary>
/// Represents a native window handled by the operating system.
/// </summary>
public interface IWindow
{
/// <summary>
/// The handle of the window.
/// </summary>
IntPtr Handle { get; }
/// <summary>
/// The title of the window.
/// </summary>
string Title { get; }
}
}

2
SafeExamBrowser.Monitoring.Contracts/SafeExamBrowser.Monitoring.Contracts.csproj
View file

@ -55,8 +55,10 @@
<Reference Include="Microsoft.CSharp" />
</ItemGroup>
<ItemGroup>
<Compile Include="Applications\ActiveApplication.cs" />
<Compile Include="Applications\Events\InstanceStartedEventHandler.cs" />
<Compile Include="Applications\Events\TerminationFailedEventHandler.cs" />
<Compile Include="Applications\IWindow.cs" />
<Compile Include="Applications\RunningApplication.cs" />
<Compile Include="Display\Events\DisplayChangedEventHandler.cs" />
<Compile Include="Applications\Events\ExplorerStartedEventHandler.cs" />

46
SafeExamBrowser.Monitoring/Applications/ApplicationMonitor.cs
View file

@ -92,6 +92,18 @@ namespace SafeExamBrowser.Monitoring.Applications
}
}
public bool TryGetActiveApplication(out ActiveApplication application)
{
application = default;
if (activeWindow != default && TryGetProcessFor(activeWindow, out var process))
{
application = new ActiveApplication(process, new Window { Handle = activeWindow.Handle, Title = activeWindow.Title });
}
return application != default;
}
public bool TryTerminate(RunningApplication application)
{
var success = true;
@ -355,23 +367,19 @@ namespace SafeExamBrowser.Monitoring.Applications
private bool IsAllowed(Window window)
{
var processId = Convert.ToInt32(nativeMethods.GetProcessIdFor(window.Handle));
var allowed = false;
if (processFactory.TryGetById(processId, out var process))
if (TryGetProcessFor(window, out var process))
{
if (BelongsToSafeExamBrowser(process) || IsWhitelisted(process, out _))
{
return true;
}
logger.Warn($"Window {window} belongs to not whitelisted process '{process.Name}'!");
}
else
{
logger.Error($"Could not find process for window {window} and process ID = {processId}!");
allowed = BelongsToSafeExamBrowser(process) || IsWhitelisted(process, out _);
}
return false;
if (!allowed)
{
logger.Warn($"Window {window} belongs to not whitelisted process '{process?.Name ?? "n/a"}'!");
}
return allowed;
}
private bool IsWhitelisted(IProcess process, out Guid? applicationId)
@ -391,6 +399,18 @@ namespace SafeExamBrowser.Monitoring.Applications
return false;
}
private bool TryGetProcessFor(Window window, out IProcess process)
{
var processId = Convert.ToInt32(nativeMethods.GetProcessIdFor(window.Handle));
if (!processFactory.TryGetById(processId, out process))
{
logger.Error($"Could not find process for window {window} and process ID = {processId}!");
}
return process != default;
}
private bool TryHide(Window window)
{
var success = nativeMethods.HideWindow(window.Handle);

3
SafeExamBrowser.Monitoring/Applications/Window.cs
View file

@ -7,10 +7,11 @@
*/
using System;
using SafeExamBrowser.Monitoring.Contracts.Applications;
namespace SafeExamBrowser.Monitoring.Applications
{
internal class Window
internal class Window : IWindow
{
public IntPtr Handle { get; set; }
public string Title { get; set; }

6
SafeExamBrowser.Proctoring/ProctoringController.cs
View file

@ -8,10 +8,12 @@
using System;
using System.Collections.Generic;
using SafeExamBrowser.Browser.Contracts;
using SafeExamBrowser.Configuration.Contracts;
using SafeExamBrowser.Core.Contracts.Notifications;
using SafeExamBrowser.I18n.Contracts;
using SafeExamBrowser.Logging.Contracts;
using SafeExamBrowser.Monitoring.Contracts.Applications;
using SafeExamBrowser.Proctoring.Contracts;
using SafeExamBrowser.Proctoring.Contracts.Events;
using SafeExamBrowser.Server.Contracts;
@ -39,6 +41,8 @@ namespace SafeExamBrowser.Proctoring
public ProctoringController(
AppConfig appConfig,
IApplicationMonitor applicationMonitor,
IBrowserApplication browser,
IFileSystem fileSystem,
IModuleLogger logger,
INativeMethods nativeMethods,
@ -49,7 +53,7 @@ namespace SafeExamBrowser.Proctoring
this.logger = logger;
this.server = server;
factory = new ProctoringFactory(appConfig, fileSystem, logger, nativeMethods, text, uiFactory);
factory = new ProctoringFactory(appConfig, applicationMonitor, browser, fileSystem, logger, nativeMethods, text, uiFactory);
implementations = new List<ProctoringImplementation>();
}

10
SafeExamBrowser.Proctoring/ProctoringFactory.cs
View file

@ -7,9 +7,11 @@
*/
using System.Collections.Generic;
using SafeExamBrowser.Browser.Contracts;
using SafeExamBrowser.Configuration.Contracts;
using SafeExamBrowser.I18n.Contracts;
using SafeExamBrowser.Logging.Contracts;
using SafeExamBrowser.Monitoring.Contracts.Applications;
using SafeExamBrowser.Proctoring.JitsiMeet;
using SafeExamBrowser.Proctoring.ScreenProctoring;
using SafeExamBrowser.Proctoring.ScreenProctoring.Service;
@ -23,6 +25,8 @@ namespace SafeExamBrowser.Proctoring
internal class ProctoringFactory
{
private readonly AppConfig appConfig;
private readonly IApplicationMonitor applicationMonitor;
private readonly IBrowserApplication browser;
private readonly IFileSystem fileSystem;
private readonly IModuleLogger logger;
private readonly INativeMethods nativeMethods;
@ -31,6 +35,8 @@ namespace SafeExamBrowser.Proctoring
public ProctoringFactory(
AppConfig appConfig,
IApplicationMonitor applicationMonitor,
IBrowserApplication browser,
IFileSystem fileSystem,
IModuleLogger logger,
INativeMethods nativeMethods,
@ -38,6 +44,8 @@ namespace SafeExamBrowser.Proctoring
IUserInterfaceFactory uiFactory)
{
this.appConfig = appConfig;
this.applicationMonitor = applicationMonitor;
this.browser = browser;
this.fileSystem = fileSystem;
this.logger = logger;
this.nativeMethods = nativeMethods;
@ -61,7 +69,7 @@ namespace SafeExamBrowser.Proctoring
var logger = this.logger.CloneFor(nameof(ScreenProctoring));
var service = new ServiceProxy(logger.CloneFor(nameof(ServiceProxy)));
implementations.Add(new ScreenProctoringImplementation(logger, nativeMethods, service, settings, text));
implementations.Add(new ScreenProctoringImplementation(applicationMonitor, browser, logger, nativeMethods, service, settings, text));
}
return implementations;

16
SafeExamBrowser.Proctoring/SafeExamBrowser.Proctoring.csproj
View file

@ -91,7 +91,11 @@
<Compile Include="ProctoringFactory.cs" />
<Compile Include="ProctoringImplementation.cs" />
<Compile Include="Properties\AssemblyInfo.cs" />
<Compile Include="ScreenProctoring\Data\IntervalTrigger.cs" />
<Compile Include="ScreenProctoring\Data\KeyboardTrigger.cs" />
<Compile Include="ScreenProctoring\Data\MouseTrigger.cs" />
<Compile Include="ScreenProctoring\Imaging\Extensions.cs" />
<Compile Include="ScreenProctoring\Data\Metadata.cs" />
<Compile Include="ScreenProctoring\Imaging\ProcessingOrder.cs" />
<Compile Include="ScreenProctoring\Imaging\ScreenShot.cs" />
<Compile Include="ScreenProctoring\ScreenProctoringImplementation.cs" />
@ -109,6 +113,14 @@
<Compile Include="ScreenProctoring\Service\ServiceResponse.cs" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\SafeExamBrowser.Applications.Contracts\SafeExamBrowser.Applications.Contracts.csproj">
<Project>{ac77745d-3b41-43e2-8e84-d40e5a4ee77f}</Project>
<Name>SafeExamBrowser.Applications.Contracts</Name>
</ProjectReference>
<ProjectReference Include="..\SafeExamBrowser.Browser.Contracts\SafeExamBrowser.Browser.Contracts.csproj">
<Project>{5FB5273D-277C-41DD-8593-A25CE1AFF2E9}</Project>
<Name>SafeExamBrowser.Browser.Contracts</Name>
</ProjectReference>
<ProjectReference Include="..\SafeExamBrowser.Configuration.Contracts\SafeExamBrowser.Configuration.Contracts.csproj">
<Project>{7d74555e-63e1-4c46-bd0a-8580552368c8}</Project>
<Name>SafeExamBrowser.Configuration.Contracts</Name>
@ -125,6 +137,10 @@
<Project>{64ea30fb-11d4-436a-9c2b-88566285363e}</Project>
<Name>SafeExamBrowser.Logging.Contracts</Name>
</ProjectReference>
<ProjectReference Include="..\SafeExamBrowser.Monitoring.Contracts\SafeExamBrowser.Monitoring.Contracts.csproj">
<Project>{6D563A30-366D-4C35-815B-2C9E6872278B}</Project>
<Name>SafeExamBrowser.Monitoring.Contracts</Name>
</ProjectReference>
<ProjectReference Include="..\SafeExamBrowser.Proctoring.Contracts\SafeExamBrowser.Proctoring.Contracts.csproj">
<Project>{8e52bd1c-0540-4f16-b181-6665d43f7a7b}</Project>
<Name>SafeExamBrowser.Proctoring.Contracts</Name>

16
SafeExamBrowser.Proctoring/ScreenProctoring/Data/IntervalTrigger.cs Normal file
View file

@ -0,0 +1,16 @@
/*
* Copyright (c) 2023 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/.
*/
namespace SafeExamBrowser.Proctoring.ScreenProctoring.Data
{
internal class IntervalTrigger
{
public int ConfigurationValue { get; internal set; }
public int TimeElapsed { get; internal set; }
}
}

20
SafeExamBrowser.Proctoring/ScreenProctoring/Data/KeyboardTrigger.cs Normal file
View file

@ -0,0 +1,20 @@
/*
* Copyright (c) 2023 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 System.Windows.Input;
using SafeExamBrowser.WindowsApi.Contracts.Events;
namespace SafeExamBrowser.Proctoring.ScreenProctoring.Data
{
internal class KeyboardTrigger
{
public Key Key { get; internal set; }
public KeyModifier Modifier { get; internal set; }
public KeyState State { get; internal set; }
}
}

158
SafeExamBrowser.Proctoring/ScreenProctoring/Data/Metadata.cs Normal file
View file

@ -0,0 +1,158 @@
/*
* Copyright (c) 2023 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 System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using SafeExamBrowser.Browser.Contracts;
using SafeExamBrowser.Logging.Contracts;
using SafeExamBrowser.Monitoring.Contracts.Applications;
using SafeExamBrowser.Proctoring.ScreenProctoring.Service.Requests;
using SafeExamBrowser.WindowsApi.Contracts.Events;
namespace SafeExamBrowser.Proctoring.ScreenProctoring.Data
{
internal class Metadata
{
private readonly IApplicationMonitor applicationMonitor;
private readonly IBrowserApplication browser;
private readonly ILogger logger;
internal string ApplicationInfo { get; private set; }
internal string BrowserInfo { get; private set; }
internal string TriggerInfo { get; private set; }
internal string Urls { get; private set; }
internal string WindowTitle { get; private set; }
internal Metadata(IApplicationMonitor applicationMonitor, IBrowserApplication browser, ILogger logger)
{
this.applicationMonitor = applicationMonitor;
this.browser = browser;
this.logger = logger;
}
internal void Capture(IntervalTrigger interval = default, KeyboardTrigger keyboard = default, MouseTrigger mouse = default)
{
CaptureApplicationData();
CaptureBrowserData();
if (interval != default)
{
CaptureIntervalTrigger(interval);
}
else if (keyboard != default)
{
CaptureKeyboardTrigger(keyboard);
}
else if (mouse != default)
{
CaptureMouseTrigger(mouse);
}
logger.Debug($"Captured metadata: {ApplicationInfo} / {BrowserInfo} / {TriggerInfo} / {Urls} / {WindowTitle}.");
}
internal string ToJson()
{
var json = new JObject
{
[Header.Metadata.ApplicationInfo] = ApplicationInfo,
[Header.Metadata.BrowserInfo] = BrowserInfo,
[Header.Metadata.BrowserUrls] = Urls,
[Header.Metadata.TriggerInfo] = TriggerInfo,
[Header.Metadata.WindowTitle] = WindowTitle
};
return json.ToString(Formatting.None);
}
private void CaptureApplicationData()
{
if (applicationMonitor.TryGetActiveApplication(out var application))
{
ApplicationInfo = BuildApplicationInfo(application);
WindowTitle = BuildWindowTitle(application);
}
else
{
ApplicationInfo = "-";
WindowTitle = "-";
}
}
private string BuildApplicationInfo(ActiveApplication application)
{
var info = new StringBuilder();
info.Append(application.Process.Name);
if (application.Process.OriginalName != default)
{
info.Append($" ({application.Process.OriginalName}{(application.Process.Signature == default ? ")" : "")}");
}
if (application.Process.Signature != default)
{
info.Append($"{(application.Process.OriginalName == default ? "(" : ", ")}{application.Process.Signature})");
}
return info.ToString();
}
private string BuildWindowTitle(ActiveApplication application)
{
return string.IsNullOrEmpty(application.Window.Title) ? "-" : application.Window.Title;
}
private void CaptureBrowserData()
{
var windows = browser.GetWindows();
BrowserInfo = BuildBrowserInfo(windows);
Urls = BuildUrls(windows);
}
private string BuildUrls(IEnumerable<IBrowserWindow> windows)
{
return string.Join(", ", windows.Select(w => w.Url));
}
private string BuildBrowserInfo(IEnumerable<IBrowserWindow> windows)
{
return string.Join(", ", windows.Select(w => $"{(w.IsMainWindow ? "Main" : "Additional")} Window: {w.Title} ({w.Url})"));
}
private void CaptureIntervalTrigger(IntervalTrigger interval)
{
TriggerInfo = $"Maximum interval of {interval.ConfigurationValue}ms has been reached ({interval.TimeElapsed}ms).";
}
private void CaptureKeyboardTrigger(KeyboardTrigger keyboard)
{
var flags = Enum.GetValues(typeof(KeyModifier)).OfType<KeyModifier>().Where(m => m != KeyModifier.None && keyboard.Modifier.HasFlag(m));
var modifiers = flags.Any() ? string.Join(" + ", flags) + " + " : string.Empty;
TriggerInfo = $"'{modifiers}{keyboard.Key}' has been {keyboard.State.ToString().ToLower()}.";
}
private void CaptureMouseTrigger(MouseTrigger mouse)
{
if (mouse.Info.IsTouch)
{
TriggerInfo = $"Tap as {mouse.Button} mouse button has been {mouse.State.ToString().ToLower()} at ({mouse.Info.X}/{mouse.Info.Y}).";
}
else
{
TriggerInfo = $"{mouse.Button} mouse button has been {mouse.State.ToString().ToLower()} at ({mouse.Info.X}/{mouse.Info.Y}).";
}
}
}
}

19
SafeExamBrowser.Proctoring/ScreenProctoring/Data/MouseTrigger.cs Normal file
View file

@ -0,0 +1,19 @@
/*
* Copyright (c) 2023 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.WindowsApi.Contracts.Events;
namespace SafeExamBrowser.Proctoring.ScreenProctoring.Data
{
internal class MouseTrigger
{
public MouseButton Button { get; internal set; }
public MouseInformation Info { get; internal set; }
public MouseButtonState State { get; internal set; }
}
}

52
SafeExamBrowser.Proctoring/ScreenProctoring/ScreenProctoringImplementation.cs
View file

@ -11,10 +11,13 @@ using System.Threading;
using System.Threading.Tasks;
using System.Timers;
using System.Windows.Input;
using SafeExamBrowser.Browser.Contracts;
using SafeExamBrowser.Core.Contracts.Notifications.Events;
using SafeExamBrowser.Core.Contracts.Resources.Icons;
using SafeExamBrowser.I18n.Contracts;
using SafeExamBrowser.Logging.Contracts;
using SafeExamBrowser.Monitoring.Contracts.Applications;
using SafeExamBrowser.Proctoring.ScreenProctoring.Data;
using SafeExamBrowser.Proctoring.ScreenProctoring.Imaging;
using SafeExamBrowser.Proctoring.ScreenProctoring.Service;
using SafeExamBrowser.Server.Contracts.Events.Proctoring;
@ -31,6 +34,8 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
{
private readonly object @lock = new object();
private readonly IApplicationMonitor applicationMonitor;
private readonly IBrowserApplication browser;
private readonly IModuleLogger logger;
private readonly INativeMethods nativeMethods;
private readonly ServiceProxy service;
@ -47,12 +52,16 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
public override event NotificationChangedEventHandler NotificationChanged;
internal ScreenProctoringImplementation(
IApplicationMonitor applicationMonitor,
IBrowserApplication browser,
IModuleLogger logger,
INativeMethods nativeMethods,
ServiceProxy service,
ProctoringSettings settings,
IText text)
{
this.applicationMonitor = applicationMonitor;
this.browser = browser;
this.logger = logger;
this.nativeMethods = nativeMethods;
this.service = service;
@ -194,18 +203,28 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
private bool KeyboardHookCallback(int keyCode, KeyModifier modifier, KeyState state)
{
var key = KeyInterop.KeyFromVirtualKey(keyCode);
var trigger = new KeyboardTrigger
{
Key = KeyInterop.KeyFromVirtualKey(keyCode),
Modifier = modifier,
State = state
};
TryExecute();
TryExecute(keyboard: trigger);
return false;
}
private bool MouseHookCallback(MouseButton button, MouseButtonState state, MouseInformation info)
{
var isTouch = info.IsTouch;
var trigger = new MouseTrigger
{
Button = button,
Info = info,
State = state
};
TryExecute();
TryExecute(mouse: trigger);
return false;
}
@ -238,10 +257,16 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
private void Timer_Elapsed(object sender, ElapsedEventArgs args)
{
TryExecute();
var trigger = new IntervalTrigger
{
ConfigurationValue = settings.MaxInterval,
TimeElapsed = Convert.ToInt32(DateTime.Now.Subtract(last).TotalMilliseconds)
};
TryExecute(interval: trigger);
}
private void TryExecute()
private void TryExecute(IntervalTrigger interval = default, KeyboardTrigger keyboard = default, MouseTrigger mouse = default)
{
if (MinimumIntervalElapsed() && Monitor.TryEnter(@lock))
{
@ -252,16 +277,27 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
{
try
{
var metadata = new Metadata(applicationMonitor, browser, logger.CloneFor(nameof(Metadata)));
using (var screenShot = new ScreenShot(logger.CloneFor(nameof(ScreenShot)), settings))
{
metadata.Capture(interval, keyboard, mouse);
screenShot.Take();
screenShot.Compress();
service.Send(screenShot);
if (service.IsConnected)
{
service.Send(metadata, screenShot);
}
else
{
logger.Warn("Cannot send screen shot as service is disconnected!");
}
}
}
catch (Exception e)
{
logger.Error("Failed to process screen shot!", e);
logger.Error("Failed to execute capturing and/or transmission!", e);
}
});

12
SafeExamBrowser.Proctoring/ScreenProctoring/Service/Requests/Header.cs
View file

@ -13,6 +13,18 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring.Service.Requests
internal const string ACCEPT = "Accept";
internal const string AUTHORIZATION = "Authorization";
internal const string GROUP_ID = "SEB_GROUP_UUID";
internal const string IMAGE_FORMAT = "imageFormat";
internal const string METADATA = "metaData";
internal const string SESSION_ID = "SEB_SESSION_UUID";
internal const string TIMESTAMP = "timestamp";
internal static class Metadata
{
internal const string ApplicationInfo = "screenProctoringMetadataApplication";
internal const string BrowserInfo = "screenProctoringMetadataBrowser";
internal const string BrowserUrls = "screenProctoringMetadataURL";
internal const string TriggerInfo = "screenProctoringMetadataUserAction";
internal const string WindowTitle = "screenProctoringMetadataWindowTitle";
}
}
}

10
SafeExamBrowser.Proctoring/ScreenProctoring/Service/Requests/ScreenShotRequest.cs
View file

@ -9,6 +9,7 @@
using System;
using System.Net.Http;
using SafeExamBrowser.Logging.Contracts;
using SafeExamBrowser.Proctoring.ScreenProctoring.Data;
using SafeExamBrowser.Proctoring.ScreenProctoring.Imaging;
using SafeExamBrowser.Settings.Proctoring;
@ -20,12 +21,13 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring.Service.Requests
{
}
internal bool TryExecute(ScreenShot screenShot, string sessionId, out string message)
internal bool TryExecute(Metadata metadata, ScreenShot screenShot, string sessionId, out string message)
{
var imageFormat = ("imageFormat", ToString(screenShot.Format));
var timestamp = ("timestamp", DateTime.Now.ToUnixTimestamp().ToString());
var data = (Header.METADATA, metadata.ToJson());
var imageFormat = (Header.IMAGE_FORMAT, ToString(screenShot.Format));
var timestamp = (Header.TIMESTAMP, DateTime.Now.ToUnixTimestamp().ToString());
var url = api.ScreenShotEndpoint.Replace(Api.SESSION_ID, sessionId);
var success = TryExecute(HttpMethod.Post, url, out var response, screenShot.Data, ContentType.OCTET_STREAM, Authorization, imageFormat, timestamp);
var success = TryExecute(HttpMethod.Post, url, out var response, screenShot.Data, ContentType.OCTET_STREAM, Authorization, data, imageFormat, timestamp);
message = response.ToLogString();

5
SafeExamBrowser.Proctoring/ScreenProctoring/Service/ServiceProxy.cs
View file

@ -9,6 +9,7 @@
using System;
using System.Net.Http;
using SafeExamBrowser.Logging.Contracts;
using SafeExamBrowser.Proctoring.ScreenProctoring.Data;
using SafeExamBrowser.Proctoring.ScreenProctoring.Imaging;
using SafeExamBrowser.Proctoring.ScreenProctoring.Service.Requests;
@ -69,10 +70,10 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring.Service
return new ServiceResponse(success, message);
}
internal ServiceResponse Send(ScreenShot screenShot)
internal ServiceResponse Send(Metadata metadata, ScreenShot screenShot)
{
var request = new ScreenShotRequest(api, httpClient, logger, parser);
var success = request.TryExecute(screenShot, SessionId, out var message);
var success = request.TryExecute(metadata, screenShot, SessionId, out var message);
if (success)
{

2
SafeExamBrowser.UserInterface.Contracts/IUserInterfaceFactory.cs
View file

@ -46,7 +46,7 @@ namespace SafeExamBrowser.UserInterface.Contracts
/// <summary>
/// Creates an application control for the specified application and location.
/// </summary>
IApplicationControl CreateApplicationControl(IApplication application, Location location);
IApplicationControl CreateApplicationControl(IApplication<IApplicationWindow> application, Location location);
/// <summary>
/// Creates a system control which allows to change the audio settings of the computer.

2
SafeExamBrowser.UserInterface.Contracts/Shell/ITaskView.cs
View file

@ -18,7 +18,7 @@ namespace SafeExamBrowser.UserInterface.Contracts.Shell
/// <summary>
/// Adds the given application to the task view.
/// </summary>
void Add(IApplication application);
void Add(IApplication<IApplicationWindow> application);
/// <summary>
/// Registers the specified activator for the task view.

4
SafeExamBrowser.UserInterface.Desktop/Controls/ActionCenter/ApplicationButton.xaml.cs
View file

@ -17,12 +17,12 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.ActionCenter
{
internal partial class ApplicationButton : UserControl
{
private readonly IApplication application;
private readonly IApplication<IApplicationWindow> application;
private readonly IApplicationWindow window;
internal event EventHandler Clicked;
internal ApplicationButton(IApplication application, IApplicationWindow window = null)
internal ApplicationButton(IApplication<IApplicationWindow> application, IApplicationWindow window = null)
{
this.application = application;
this.window = window;

4
SafeExamBrowser.UserInterface.Desktop/Controls/ActionCenter/ApplicationControl.xaml.cs
View file

@ -15,9 +15,9 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.ActionCenter
{
internal partial class ApplicationControl : UserControl, IApplicationControl
{
private IApplication application;
private readonly IApplication<IApplicationWindow> application;
internal ApplicationControl(IApplication application)
internal ApplicationControl(IApplication<IApplicationWindow> application)
{
this.application = application;

4
SafeExamBrowser.UserInterface.Desktop/Controls/Taskbar/ApplicationControl.xaml.cs
View file

@ -22,10 +22,10 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.Taskbar
{
internal partial class ApplicationControl : UserControl, IApplicationControl
{
private readonly IApplication application;
private readonly IApplication<IApplicationWindow> application;
private IApplicationWindow single;
internal ApplicationControl(IApplication application)
internal ApplicationControl(IApplication<IApplicationWindow> application)
{
this.application = application;

2
SafeExamBrowser.UserInterface.Desktop/UserInterfaceFactory.cs
View file

@ -56,7 +56,7 @@ namespace SafeExamBrowser.UserInterface.Desktop
return new ActionCenter();
}
public IApplicationControl CreateApplicationControl(IApplication application, Location location)
public IApplicationControl CreateApplicationControl(IApplication<IApplicationWindow> application, Location location)
{
if (location == Location.ActionCenter)
{

10
SafeExamBrowser.UserInterface.Desktop/Windows/Taskview.xaml.cs
View file

@ -20,22 +20,22 @@ namespace SafeExamBrowser.UserInterface.Desktop.Windows
{
internal partial class Taskview : Window, ITaskview
{
private IList<IApplication> applications;
private LinkedListNode<WindowControl> current;
private LinkedList<WindowControl> controls;
private readonly IList<IApplication<IApplicationWindow>> applications;
private readonly LinkedList<WindowControl> controls;
private LinkedListNode<WindowControl> current;
internal IntPtr Handle { get; private set; }
internal Taskview()
{
applications = new List<IApplication>();
applications = new List<IApplication<IApplicationWindow>>();
controls = new LinkedList<WindowControl>();
InitializeComponent();
InitializeTaskview();
}
public void Add(IApplication application)
public void Add(IApplication<IApplicationWindow> application)
{
application.WindowsChanged += Application_WindowsChanged;
applications.Add(application);

4
SafeExamBrowser.UserInterface.Mobile/Controls/ActionCenter/ApplicationButton.xaml.cs
View file

@ -17,12 +17,12 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.ActionCenter
{
internal partial class ApplicationButton : UserControl
{
private readonly IApplication application;
private readonly IApplication<IApplicationWindow> application;
private readonly IApplicationWindow window;
internal event EventHandler Clicked;
internal ApplicationButton(IApplication application, IApplicationWindow window = null)
internal ApplicationButton(IApplication<IApplicationWindow> application, IApplicationWindow window = null)
{
this.application = application;
this.window = window;

4
SafeExamBrowser.UserInterface.Mobile/Controls/ActionCenter/ApplicationControl.xaml.cs
View file

@ -15,9 +15,9 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.ActionCenter
{
internal partial class ApplicationControl : UserControl, IApplicationControl
{
private IApplication application;
private readonly IApplication<IApplicationWindow> application;
internal ApplicationControl(IApplication application)
internal ApplicationControl(IApplication<IApplicationWindow> application)
{
this.application = application;

4
SafeExamBrowser.UserInterface.Mobile/Controls/Taskbar/ApplicationControl.xaml.cs
View file

@ -22,10 +22,10 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.Taskbar
{
internal partial class ApplicationControl : UserControl, IApplicationControl
{
private readonly IApplication application;
private readonly IApplication<IApplicationWindow> application;
private IApplicationWindow single;
internal ApplicationControl(IApplication application)
internal ApplicationControl(IApplication<IApplicationWindow> application)
{
this.application = application;

2
SafeExamBrowser.UserInterface.Mobile/UserInterfaceFactory.cs
View file

@ -56,7 +56,7 @@ namespace SafeExamBrowser.UserInterface.Mobile
return new ActionCenter();
}
public IApplicationControl CreateApplicationControl(IApplication application, Location location)
public IApplicationControl CreateApplicationControl(IApplication<IApplicationWindow> application, Location location)
{
if (location == Location.ActionCenter)
{

9
SafeExamBrowser.UserInterface.Mobile/Windows/Taskview.xaml.cs
View file

@ -20,22 +20,23 @@ namespace SafeExamBrowser.UserInterface.Mobile.Windows
{
internal partial class Taskview : Window, ITaskview
{
private IList<IApplication> applications;
private readonly IList<IApplication<IApplicationWindow>> applications;
private readonly LinkedList<WindowControl> controls;
private LinkedListNode<WindowControl> current;
private LinkedList<WindowControl> controls;
internal IntPtr Handle { get; private set; }
internal Taskview()
{
applications = new List<IApplication>();
applications = new List<IApplication<IApplicationWindow>>();
controls = new LinkedList<WindowControl>();
InitializeComponent();
InitializeTaskview();
}
public void Add(IApplication application)
public void Add(IApplication<IApplicationWindow> application)
{
application.WindowsChanged += Application_WindowsChanged;
applications.Add(application);