103 lines
3.5 KiB
C#
103 lines
3.5 KiB
C#
/*
|
|
* Copyright (c) 2024 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
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
*/
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.IO;
|
|
using System.Security.Cryptography;
|
|
using SafeExamBrowser.Settings;
|
|
using SafeExamBrowser.Settings.Applications;
|
|
using SafeExamBrowser.Settings.Security;
|
|
|
|
namespace SafeExamBrowser.Configuration.ConfigurationData
|
|
{
|
|
internal class DataProcessor
|
|
{
|
|
internal void Process(IDictionary<string, object> rawData, AppSettings settings)
|
|
{
|
|
AllowBrowserToolbarForReloading(settings);
|
|
CalculateConfigurationKey(rawData, settings);
|
|
InitializeBrowserHomeFunctionality(settings);
|
|
InitializeClipboardSettings(settings);
|
|
InitializeProctoringSettings(settings);
|
|
RemoveLegacyBrowsers(settings);
|
|
}
|
|
|
|
private void AllowBrowserToolbarForReloading(AppSettings settings)
|
|
{
|
|
if (settings.Browser.AdditionalWindow.AllowReloading && settings.Browser.AdditionalWindow.ShowReloadButton)
|
|
{
|
|
settings.Browser.AdditionalWindow.ShowToolbar = true;
|
|
}
|
|
|
|
if (settings.Browser.MainWindow.AllowReloading && settings.Browser.MainWindow.ShowReloadButton)
|
|
{
|
|
settings.Browser.MainWindow.ShowToolbar = true;
|
|
}
|
|
}
|
|
|
|
private void CalculateConfigurationKey(IDictionary<string, object> rawData, AppSettings settings)
|
|
{
|
|
using (var algorithm = new SHA256Managed())
|
|
using (var stream = new MemoryStream())
|
|
using (var writer = new StreamWriter(stream))
|
|
{
|
|
Json.Serialize(rawData, writer);
|
|
|
|
writer.Flush();
|
|
stream.Seek(0, SeekOrigin.Begin);
|
|
|
|
var hash = algorithm.ComputeHash(stream);
|
|
var key = BitConverter.ToString(hash).ToLower().Replace("-", string.Empty);
|
|
|
|
settings.Browser.ConfigurationKey = key;
|
|
}
|
|
}
|
|
|
|
private void InitializeBrowserHomeFunctionality(AppSettings settings)
|
|
{
|
|
settings.Browser.MainWindow.ShowHomeButton = settings.Browser.UseStartUrlAsHomeUrl || !string.IsNullOrWhiteSpace(settings.Browser.HomeUrl);
|
|
settings.Browser.HomePasswordHash = settings.Security.QuitPasswordHash;
|
|
}
|
|
|
|
private void InitializeClipboardSettings(AppSettings settings)
|
|
{
|
|
settings.Browser.UseIsolatedClipboard = settings.Security.ClipboardPolicy == ClipboardPolicy.Isolated;
|
|
settings.Keyboard.AllowCtrlC = settings.Security.ClipboardPolicy != ClipboardPolicy.Block;
|
|
settings.Keyboard.AllowCtrlV = settings.Security.ClipboardPolicy != ClipboardPolicy.Block;
|
|
settings.Keyboard.AllowCtrlX = settings.Security.ClipboardPolicy != ClipboardPolicy.Block;
|
|
}
|
|
|
|
private void InitializeProctoringSettings(AppSettings settings)
|
|
{
|
|
settings.Proctoring.Enabled = settings.Proctoring.ScreenProctoring.Enabled;
|
|
}
|
|
|
|
private void RemoveLegacyBrowsers(AppSettings settings)
|
|
{
|
|
var legacyBrowsers = new List<WhitelistApplication>();
|
|
|
|
foreach (var application in settings.Applications.Whitelist)
|
|
{
|
|
var isEnginePath = application.ExecutablePath?.Contains("xulrunner") == true;
|
|
var isFirefox = application.ExecutableName?.Equals("firefox.exe", StringComparison.OrdinalIgnoreCase) == true;
|
|
var isXulRunner = application.ExecutableName?.Equals("xulrunner.exe", StringComparison.OrdinalIgnoreCase) == true;
|
|
|
|
if (isEnginePath && (isFirefox || isXulRunner))
|
|
{
|
|
legacyBrowsers.Add(application);
|
|
}
|
|
}
|
|
|
|
foreach (var legacyBrowser in legacyBrowsers)
|
|
{
|
|
settings.Applications.Whitelist.Remove(legacyBrowser);
|
|
}
|
|
}
|
|
}
|
|
}
|