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Restore SEBPatch

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This commit is contained in:
Vichingo455
2025-06-01 11:56:28 +02:00
parent 8c656e3137
commit 00707825b4
1009 changed files with 5005 additions and 6502 deletions
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2
SafeExamBrowser.Proctoring/ProctoringController.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/ProctoringFactory.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/Properties/AssemblyInfo.cs
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@@ -8,7 +8,7 @@ using System.Runtime.InteropServices;
[assembly: AssemblyDescription("Safe Exam Browser")]
[assembly: AssemblyCompany("ETH Zürich")]
[assembly: AssemblyProduct("SafeExamBrowser.Proctoring")]
[assembly: AssemblyCopyright("Copyright © 2024 ETH Zürich, IT Services")]
[assembly: AssemblyCopyright("Copyright © 2025 ETH Zürich, IT Services")]
// Setting ComVisible to false makes the types in this assembly not visible
// to COM components. If you need to access a type in this assembly from

18
SafeExamBrowser.Proctoring/SafeExamBrowser.Proctoring.csproj
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@@ -53,14 +53,17 @@
<CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
</PropertyGroup>
<ItemGroup>
<Reference Include="KGySoft.CoreLibraries, Version=8.1.0.0, Culture=neutral, PublicKeyToken=b45eba277439ddfe, processorArchitecture=MSIL">
<HintPath>..\packages\KGySoft.CoreLibraries.8.1.0\lib\net472\KGySoft.CoreLibraries.dll</HintPath>
<Reference Include="BouncyCastle.Cryptography, Version=2.0.0.0, Culture=neutral, PublicKeyToken=072edcf4a5328938, processorArchitecture=MSIL">
<HintPath>..\packages\BouncyCastle.Cryptography.2.5.0\lib\net461\BouncyCastle.Cryptography.dll</HintPath>
</Reference>
<Reference Include="KGySoft.Drawing, Version=8.1.0.0, Culture=neutral, PublicKeyToken=b45eba277439ddfe, processorArchitecture=MSIL">
<HintPath>..\packages\KGySoft.Drawing.8.1.0\lib\net46\KGySoft.Drawing.dll</HintPath>
<Reference Include="KGySoft.CoreLibraries, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b45eba277439ddfe, processorArchitecture=MSIL">
<HintPath>..\packages\KGySoft.CoreLibraries.9.0.0\lib\net472\KGySoft.CoreLibraries.dll</HintPath>
</Reference>
<Reference Include="KGySoft.Drawing.Core, Version=8.1.0.0, Culture=neutral, PublicKeyToken=b45eba277439ddfe, processorArchitecture=MSIL">
<HintPath>..\packages\KGySoft.Drawing.Core.8.1.0\lib\net46\KGySoft.Drawing.Core.dll</HintPath>
<Reference Include="KGySoft.Drawing, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b45eba277439ddfe, processorArchitecture=MSIL">
<HintPath>..\packages\KGySoft.Drawing.9.0.0\lib\net46\KGySoft.Drawing.dll</HintPath>
</Reference>
<Reference Include="KGySoft.Drawing.Core, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b45eba277439ddfe, processorArchitecture=MSIL">
<HintPath>..\packages\KGySoft.Drawing.Core.9.0.0\lib\net46\KGySoft.Drawing.Core.dll</HintPath>
</Reference>
<Reference Include="Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
<HintPath>..\packages\Newtonsoft.Json.13.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
@@ -88,6 +91,7 @@
<Compile Include="ScreenProctoring\Data\KeyboardTrigger.cs" />
<Compile Include="ScreenProctoring\Data\MetaData.cs" />
<Compile Include="ScreenProctoring\Data\MouseTrigger.cs" />
<Compile Include="ScreenProctoring\Encryptor.cs" />
<Compile Include="ScreenProctoring\Events\DataCollectedEventHandler.cs" />
<Compile Include="ScreenProctoring\Imaging\Extensions.cs" />
<Compile Include="ScreenProctoring\Data\MetaDataAggregator.cs" />
@@ -107,6 +111,7 @@
<Compile Include="ScreenProctoring\Service\Requests\OAuth2TokenRequest.cs" />
<Compile Include="ScreenProctoring\Service\Requests\Request.cs" />
<Compile Include="ScreenProctoring\Service\Requests\ScreenShotRequest.cs" />
<Compile Include="ScreenProctoring\Service\Sanitizer.cs" />
<Compile Include="ScreenProctoring\Service\ServiceProxy.cs" />
<Compile Include="ScreenProctoring\Service\ServiceResponse.cs" />
<Compile Include="ScreenProctoring\TransmissionSpooler.cs" />
@@ -166,6 +171,7 @@
</ProjectReference>
</ItemGroup>
<ItemGroup>
<None Include="app.config" />
<None Include="packages.config" />
</ItemGroup>
<ItemGroup />

11
SafeExamBrowser.Proctoring/ScreenProctoring/Buffer.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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
@@ -47,6 +47,15 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
}
}
internal void Clear()
{
lock (@lock)
{
list.Clear();
logger.Debug("Cleared all data.");
}
}
internal void Dequeue()
{
lock (@lock)

135
SafeExamBrowser.Proctoring/ScreenProctoring/Cache.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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
@@ -23,19 +23,27 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
{
internal class Cache
{
private const string DATA_FILE_EXTENSION = "xml";
private const string DATA_FILE_EXTENSION = "spsdat";
private const string IMAGE_FILE_EXTENSION = "spsimg";
private readonly AppConfig appConfig;
private readonly Lazy<string> directory;
private readonly Encryptor encryptor;
private readonly ILogger logger;
private readonly ScreenProctoringSettings settings;
private readonly ConcurrentQueue<(string fileName, int checksum, string hash)> queue;
internal int Count => queue.Count;
internal string Directory { get; private set; }
internal string Directory => directory.Value;
internal long Size { get; private set; }
public Cache(AppConfig appConfig, ILogger logger)
public Cache(AppConfig appConfig, ILogger logger, ScreenProctoringSettings settings)
{
this.appConfig = appConfig;
this.directory = new Lazy<string>(InitializeDirectory);
this.encryptor = new Encryptor(settings);
this.logger = logger;
this.settings = settings;
this.queue = new ConcurrentQueue<(string, int, string)>();
}
@@ -44,6 +52,24 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
return queue.Any();
}
internal void Clear()
{
while (queue.Any())
{
if (queue.TryDequeue(out var item))
{
var (dataPath, imagePath) = BuildPathsFor(item.fileName);
File.Delete(dataPath);
File.Delete(imagePath);
}
}
Size = 0;
logger.Debug("Cleared all data.");
}
internal bool TryEnqueue(MetaData metaData, ScreenShot screenShot)
{
var fileName = $"{screenShot.CaptureTime:yyyy-MM-dd HH\\hmm\\mss\\sfff\\m\\s}";
@@ -51,14 +77,22 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
try
{
InitializeDirectory();
SaveData(fileName, metaData, screenShot);
SaveImage(fileName, screenShot);
Enqueue(fileName, metaData, screenShot);
var (dataPath, imagePath) = BuildPathsFor(fileName);
if (Size <= settings.CacheSize * 1000000)
{
SaveData(dataPath, metaData, screenShot);
SaveImage(imagePath, screenShot);
Enqueue(fileName, metaData, screenShot);
logger.Debug($"Cached data for '{fileName}', now holding {Count} item(s) counting {Size / 1000000.0:N1} MB.");
}
else
{
logger.Debug($"The maximum cache size of {settings.CacheSize:N1} MB has been reached, dropping data for '{fileName}'!");
}
success = true;
logger.Debug($"Cached data for '{fileName}', now holding {Count} item(s).");
}
catch (Exception e)
{
@@ -79,13 +113,15 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
{
try
{
LoadData(item.fileName, out metaData, out screenShot);
LoadImage(item.fileName, screenShot);
Dequeue(item.fileName, item.checksum, item.hash, metaData, screenShot);
var (dataPath, imagePath) = BuildPathsFor(item.fileName);
LoadData(dataPath, out metaData, out screenShot);
LoadImage(imagePath, screenShot);
Dequeue(item.checksum, dataPath, item.fileName, item.hash, imagePath, metaData, screenShot);
success = true;
logger.Debug($"Removed data for '{item.fileName}', {Count} item(s) remaining.");
logger.Debug($"Removed data for '{item.fileName}', {Count} item(s) counting {Size / 1000000.0:N1} MB remaining.");
}
catch (Exception e)
{
@@ -96,12 +132,16 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
return success;
}
private void Dequeue(string fileName, int checksum, string hash, MetaData metaData, ScreenShot screenShot)
private (string dataPath, string imagePath) BuildPathsFor(string fileName)
{
var dataPath = Path.Combine(Directory, $"{fileName}.{DATA_FILE_EXTENSION}");
var extension = screenShot.Format.ToString().ToLower();
var imagePath = Path.Combine(Directory, $"{fileName}.{extension}");
var imagePath = Path.Combine(Directory, $"{fileName}.{IMAGE_FILE_EXTENSION}");
return (dataPath, imagePath);
}
private void Dequeue(int checksum, string dataPath, string fileName, string hash, string imagePath, MetaData metaData, ScreenShot screenShot)
{
if (checksum != GenerateChecksum(screenShot))
{
logger.Warn($"The checksum for '{fileName}' does not match, the image data may be manipulated!");
@@ -157,24 +197,25 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
return hash;
}
private void InitializeDirectory()
private string InitializeDirectory()
{
if (Directory == default)
var path = Path.Combine(appConfig.TemporaryDirectory, nameof(ScreenProctoring));
if (!System.IO.Directory.Exists(path))
{
Directory = Path.Combine(appConfig.TemporaryDirectory, nameof(ScreenProctoring));
System.IO.Directory.CreateDirectory(path);
logger.Debug($"Created caching directory '{path}'.");
}
if (!System.IO.Directory.Exists(Directory))
{
System.IO.Directory.CreateDirectory(Directory);
logger.Debug($"Created caching directory '{Directory}'.");
}
return path;
}
private void LoadData(string fileName, out MetaData metaData, out ScreenShot screenShot)
private void LoadData(string filePath, out MetaData metaData, out ScreenShot screenShot)
{
var dataPath = Path.Combine(Directory, $"{fileName}.{DATA_FILE_EXTENSION}");
var document = XDocument.Load(dataPath);
var encrypted = File.ReadAllBytes(filePath);
var data = encryptor.Decrypt(encrypted);
var text = Encoding.UTF8.GetString(data);
var document = XDocument.Parse(text);
var xml = document.Descendants(nameof(MetaData)).First();
metaData = new MetaData();
@@ -193,22 +234,24 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
screenShot.Format = (ImageFormat) Enum.Parse(typeof(ImageFormat), xml.Descendants(nameof(ScreenShot.Format)).First().Value);
screenShot.Height = int.Parse(xml.Descendants(nameof(ScreenShot.Height)).First().Value);
screenShot.Width = int.Parse(xml.Descendants(nameof(ScreenShot.Width)).First().Value);
Size -= encrypted.Length;
}
private void LoadImage(string fileName, ScreenShot screenShot)
private void LoadImage(string filePath, ScreenShot screenShot)
{
var extension = screenShot.Format.ToString().ToLower();
var imagePath = Path.Combine(Directory, $"{fileName}.{extension}");
var encrypted = File.ReadAllBytes(filePath);
var image = encryptor.Decrypt(encrypted);
screenShot.Data = File.ReadAllBytes(imagePath);
screenShot.Data = image;
Size -= encrypted.Length;
}
private void SaveData(string fileName, MetaData metaData, ScreenShot screenShot)
private void SaveData(string filePath, MetaData metaData, ScreenShot screenShot)
{
var data = new XDocument(new XDeclaration("1.0", "utf-8", "yes"));
var dataPath = Path.Combine(Directory, $"{fileName}.{DATA_FILE_EXTENSION}");
var xml = new XDocument(new XDeclaration("1.0", "utf-8", "yes"));
data.Add(
xml.Add(
new XElement("Data",
new XElement(nameof(MetaData),
new XElement(nameof(MetaData.ApplicationInfo), metaData.ApplicationInfo),
@@ -227,15 +270,25 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
)
);
data.Save(dataPath);
using (var stream = new MemoryStream())
using (var writer = new StreamWriter(stream, new UTF8Encoding(false)))
{
xml.Save(writer);
var data = stream.ToArray();
var encrypted = encryptor.Encrypt(data);
File.WriteAllBytes(filePath, encrypted);
Size += encrypted.Length;
}
}
private void SaveImage(string fileName, ScreenShot screenShot)
private void SaveImage(string filePath, ScreenShot screenShot)
{
var extension = screenShot.Format.ToString().ToLower();
var imagePath = Path.Combine(Directory, $"{fileName}.{extension}");
var encrypted = encryptor.Encrypt(screenShot.Data);
File.WriteAllBytes(imagePath, screenShot.Data);
File.WriteAllBytes(filePath, encrypted);
Size += encrypted.Length;
}
}
}

2
SafeExamBrowser.Proctoring/ScreenProctoring/Data/IntervalTrigger.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/ScreenProctoring/Data/KeyboardTrigger.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/ScreenProctoring/Data/MetaDataAggregator.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/ScreenProctoring/Data/Metadata.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/ScreenProctoring/Data/MouseTrigger.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

18
SafeExamBrowser.Proctoring/ScreenProctoring/DataCollector.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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
@@ -66,8 +66,8 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
mouseHookId = nativeMethods.RegisterMouseHook(MouseHookCallback);
timer.AutoReset = false;
timer.Elapsed += MaxIntervalElapsed;
timer.Interval = settings.MaxInterval;
timer.Elapsed += IntervalMaximumElapsed;
timer.Interval = settings.IntervalMaximum;
timer.Start();
logger.Debug("Started.");
@@ -90,7 +90,7 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
keyboardHookId = default;
mouseHookId = default;
timer.Elapsed -= MaxIntervalElapsed;
timer.Elapsed -= IntervalMaximumElapsed;
timer.Stop();
logger.Debug("Stopped.");
@@ -110,11 +110,11 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
return false;
}
private void MaxIntervalElapsed(object sender, ElapsedEventArgs args)
private void IntervalMaximumElapsed(object sender, ElapsedEventArgs args)
{
var trigger = new IntervalTrigger
{
ConfigurationValue = settings.MaxInterval,
ConfigurationValue = settings.IntervalMaximum,
};
TryCollect(interval: trigger);
@@ -136,7 +136,7 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
private void TryCollect(IntervalTrigger interval = default, KeyboardTrigger keyboard = default, MouseTrigger mouse = default)
{
if (MinIntervalElapsed() && Monitor.TryEnter(@lock))
if (HasIntervalMinimumElapsed() && Monitor.TryEnter(@lock))
{
var elapsed = DateTime.Now.Subtract(last);
@@ -169,9 +169,9 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
}
}
private bool MinIntervalElapsed()
private bool HasIntervalMinimumElapsed()
{
return DateTime.Now.Subtract(last) >= new TimeSpan(0, 0, 0, 0, settings.MinInterval);
return DateTime.Now.Subtract(last) >= new TimeSpan(0, 0, 0, 0, settings.IntervalMinimum);
}
}
}

2
SafeExamBrowser.Proctoring/ScreenProctoring/Events/DataCollectedEventHandler.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/ScreenProctoring/Imaging/Extensions.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/ScreenProctoring/Imaging/ProcessingOrder.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/ScreenProctoring/Imaging/ScreenShot.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/ScreenProctoring/Imaging/ScreenShotProcessor.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

5
SafeExamBrowser.Proctoring/ScreenProctoring/ScreenProctoringImplementation.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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
@@ -47,7 +47,7 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
this.logger = logger;
this.service = service;
this.settings = settings.ScreenProctoring;
this.spooler = new TransmissionSpooler(appConfig, logger.CloneFor(nameof(TransmissionSpooler)), service);
this.spooler = new TransmissionSpooler(appConfig, logger.CloneFor(nameof(TransmissionSpooler)), service, settings.ScreenProctoring);
this.text = text;
}
@@ -112,6 +112,7 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
{
settings.ClientId = instruction.ClientId;
settings.ClientSecret = instruction.ClientSecret;
settings.EncryptionSecret = instruction.EncryptionSecret;
settings.GroupId = instruction.GroupId;
settings.ServiceUrl = instruction.ServiceUrl;

10
SafeExamBrowser.Proctoring/ScreenProctoring/Service/Api.cs
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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
@@ -19,10 +19,10 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring.Service
internal Api()
{
AccessTokenEndpoint = "/oauth/token";
HealthEndpoint = "/health";
ScreenShotEndpoint = $"/seb-api/v1/session/{SESSION_ID}/screenshot";
SessionEndpoint = "/seb-api/v1/session";
AccessTokenEndpoint = "oauth/token";
HealthEndpoint = "health";
ScreenShotEndpoint = $"seb-api/v1/session/{SESSION_ID}/screenshot";
SessionEndpoint = "seb-api/v1/session";
}
}
}

2
SafeExamBrowser.Proctoring/ScreenProctoring/Service/Parser.cs
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/ScreenProctoring/Service/Requests/ContentType.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/ScreenProctoring/Service/Requests/CreateSessionRequest.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/ScreenProctoring/Service/Requests/Extensions.cs
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/ScreenProctoring/Service/Requests/Header.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/ScreenProctoring/Service/Requests/HealthRequest.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/ScreenProctoring/Service/Requests/OAuth2TokenRequest.cs
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/ScreenProctoring/Service/Requests/Request.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/ScreenProctoring/Service/Requests/ScreenShotRequest.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

2
SafeExamBrowser.Proctoring/ScreenProctoring/Service/Requests/TerminateSessionRequest.cs
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

8
SafeExamBrowser.Proctoring/ScreenProctoring/Service/ServiceProxy.cs
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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
@@ -20,6 +20,7 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring.Service
private readonly Api api;
private readonly ILogger logger;
private readonly Parser parser;
private readonly Sanitizer sanitizer;
private HttpClient httpClient;
@@ -31,16 +32,19 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring.Service
this.api = new Api();
this.logger = logger;
this.parser = new Parser(logger);
this.sanitizer = new Sanitizer();
}
internal ServiceResponse Connect(string clientId, string clientSecret, string serviceUrl)
{
httpClient = new HttpClient
{
BaseAddress = new Uri(serviceUrl),
BaseAddress = sanitizer.Sanitize(serviceUrl),
Timeout = TimeSpan.FromSeconds(10)
};
sanitizer.Sanitize(api);
var request = new OAuth2TokenRequest(api, httpClient, logger, parser);
var success = request.TryExecute(clientId, clientSecret, out var message);

2
SafeExamBrowser.Proctoring/ScreenProctoring/Service/ServiceResponse.cs
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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

67
SafeExamBrowser.Proctoring/ScreenProctoring/TransmissionSpooler.cs
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2024 ETH Zürich, IT Services
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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
@@ -16,6 +16,7 @@ using SafeExamBrowser.Proctoring.Contracts.Events;
using SafeExamBrowser.Proctoring.ScreenProctoring.Data;
using SafeExamBrowser.Proctoring.ScreenProctoring.Imaging;
using SafeExamBrowser.Proctoring.ScreenProctoring.Service;
using SafeExamBrowser.Settings.Proctoring;
using Timer = System.Timers.Timer;
namespace SafeExamBrowser.Proctoring.ScreenProctoring
@@ -40,10 +41,10 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
private Thread thread;
private CancellationTokenSource token;
internal TransmissionSpooler(AppConfig appConfig, IModuleLogger logger, ServiceProxy service)
internal TransmissionSpooler(AppConfig appConfig, IModuleLogger logger, ServiceProxy service, ScreenProctoringSettings settings)
{
this.buffer = new Buffer(logger.CloneFor(nameof(Buffer)));
this.cache = new Cache(appConfig, logger.CloneFor(nameof(Cache)));
this.cache = new Cache(appConfig, logger.CloneFor(nameof(Cache)), settings);
this.logger = logger;
this.queue = new ConcurrentQueue<(MetaData, ScreenShot)>();
this.random = new Random();
@@ -56,13 +57,14 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
queue.Enqueue((metaData, screenShot));
}
internal void ExecuteRemainingWork(Action<RemainingWorkUpdatedEventArgs> updateStatus)
internal void ExecuteRemainingWork(Action<RemainingWorkUpdatedEventArgs> handler)
{
var previous = buffer.Count + cache.Count;
var progress = 0;
var start = DateTime.Now;
var total = previous;
while (HasRemainingWork() && service.IsConnected && (!networkIssue || recovering || DateTime.Now < resume))
while (HasRemainingWork() && service.IsConnected)
{
var remaining = buffer.Count + cache.Count;
@@ -78,26 +80,19 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
previous = remaining;
progress = total - remaining;
updateStatus(new RemainingWorkUpdatedEventArgs
var args = UpdateStatus(handler, progress, start, total);
if (args.CancellationRequested)
{
IsWaiting = recovering || networkIssue,
Next = buffer.TryPeek(out _, out var schedule, out _) ? schedule : default(DateTime?),
Progress = progress,
Resume = resume,
Total = total
});
logger.Warn($"The execution of the remaining work has been cancelled and {remaining} item(s) will not be transmitted!");
break;
}
Thread.Sleep(100);
}
if (networkIssue)
{
updateStatus(new RemainingWorkUpdatedEventArgs { HasFailed = true, CachePath = cache.Directory });
}
else
{
updateStatus(new RemainingWorkUpdatedEventArgs { IsFinished = true });
}
UpdateStatus(handler);
}
internal bool HasRemainingWork()
@@ -163,6 +158,9 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
thread = default;
token = default;
}
buffer.Clear();
cache.Clear();
}
private void Execute()
@@ -417,5 +415,34 @@ namespace SafeExamBrowser.Proctoring.ScreenProctoring
return current;
}
private RemainingWorkUpdatedEventArgs UpdateStatus(Action<RemainingWorkUpdatedEventArgs> handler, int progress, DateTime start, int total)
{
var args = new RemainingWorkUpdatedEventArgs
{
AllowCancellation = start.Add(new TimeSpan(0, 1, 15)) < DateTime.Now,
IsWaiting = health == BAD || networkIssue || recovering || DateTime.Now < resume,
Next = buffer.TryPeek(out _, out var schedule, out _) ? schedule : default(DateTime?),
Progress = progress,
Resume = DateTime.Now < resume ? resume : default(DateTime?),
Total = total
};
handler.Invoke(args);
return args;
}
private void UpdateStatus(Action<RemainingWorkUpdatedEventArgs> handler)
{
if (HasRemainingWork())
{
handler.Invoke(new RemainingWorkUpdatedEventArgs { HasFailed = true, CachePath = cache.Directory });
}
else
{
handler.Invoke(new RemainingWorkUpdatedEventArgs { IsFinished = true });
}
}
}
}

7
SafeExamBrowser.Proctoring/packages.config
View File

@@ -1,7 +1,8 @@
<?xml version="1.0" encoding="utf-8"?>
<packages>
<package id="KGySoft.CoreLibraries" version="8.1.0" targetFramework="net48" />
<package id="KGySoft.Drawing" version="8.1.0" targetFramework="net48" />
<package id="KGySoft.Drawing.Core" version="8.1.0" targetFramework="net48" />
<package id="BouncyCastle.Cryptography" version="2.5.0" targetFramework="net48" />
<package id="KGySoft.CoreLibraries" version="9.0.0" targetFramework="net48" />
<package id="KGySoft.Drawing" version="9.0.0" targetFramework="net48" />
<package id="KGySoft.Drawing.Core" version="9.0.0" targetFramework="net48" />
<package id="Newtonsoft.Json" version="13.0.3" targetFramework="net48" />
</packages>