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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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112
SafeExamBrowser.Monitoring/Applications/ApplicationMonitor.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
@@ -52,40 +52,44 @@ namespace SafeExamBrowser.Monitoring.Applications
{
var result = new InitializationResult();
InitializeProcesses();
//InitializeBlacklist(settings, result);
//InitializeWhitelist(settings, result);
return result;
}
public void Start()
{
timer.AutoReset = false;
timer.Elapsed += Timer_Elapsed;
timer.Start();
//timer.AutoReset = false;
//timer.Elapsed += Timer_Elapsed;
//timer.Start();
logger.Info("Started monitoring applications.");
captureHookId = nativeMethods.RegisterSystemCaptureStartEvent(SystemEvent_WindowChanged);
logger.Info($"Registered system capture start event with ID = {captureHookId}.");
//captureHookId = nativeMethods.RegisterSystemCaptureStartEvent(SystemEvent_WindowChanged);
//logger.Info($"Registered system capture start event with ID = {captureHookId}.");
foregroundHookId = nativeMethods.RegisterSystemForegroundEvent(SystemEvent_WindowChanged);
logger.Info($"Registered system foreground event with ID = {foregroundHookId}.");
//foregroundHookId = nativeMethods.RegisterSystemForegroundEvent(SystemEvent_WindowChanged);
//logger.Info($"Registered system foreground event with ID = {foregroundHookId}.");
}
public void Stop()
{
timer.Stop();
timer.Elapsed -= Timer_Elapsed;
//timer.Stop();
//timer.Elapsed -= Timer_Elapsed;
logger.Info("Stopped monitoring applications.");
if (captureHookId.HasValue)
{
nativeMethods.DeregisterSystemEventHook(captureHookId.Value);
logger.Info($"Unregistered system capture start event with ID = {captureHookId}.");
}
//if (captureHookId.HasValue)
//{
// nativeMethods.DeregisterSystemEventHook(captureHookId.Value);
// logger.Info($"Unregistered system capture start event with ID = {captureHookId}.");
//}
if (foregroundHookId.HasValue)
{
nativeMethods.DeregisterSystemEventHook(foregroundHookId.Value);
logger.Info($"Unregistered system foreground event with ID = {foregroundHookId}.");
}
//if (foregroundHookId.HasValue)
//{
// nativeMethods.DeregisterSystemEventHook(foregroundHookId.Value);
// logger.Info($"Unregistered system foreground event with ID = {foregroundHookId}.");
//}
}
public bool TryGetActiveApplication(out ActiveApplication application)
@@ -110,19 +114,73 @@ namespace SafeExamBrowser.Monitoring.Applications
{
var success = true;
foreach (var process in application.Processes)
{
success &= TryTerminate(process);
}
return success;
}
private void SystemEvent_WindowChanged(IntPtr handle)
{
if (handle != IntPtr.Zero && activeWindow?.Handle != handle)
{
var title = nativeMethods.GetWindowTitle(handle);
var window = new Window { Handle = handle, Title = title };
logger.Debug($"Window has changed from {activeWindow} to {window}.");
activeWindow = window;
Task.Run(() =>
{
if (!IsAllowed(window) && !TryHide(window))
{
Close(window);
}
});
}
}
private void Timer_Elapsed(object sender, ElapsedEventArgs e)
{
var failed = new List<RunningApplication>();
var running = processFactory.GetAllRunning();
var started = running.Where(r => processes.All(p => p.Id != r.Id)).ToList();
var terminated = processes.Where(p => running.All(r => r.Id != p.Id)).ToList();
foreach (var process in started)
{
logger.Debug($"Process {process} has been started [{process.GetAdditionalInfo()}].");
processes.Add(process);
if (process.Name == "explorer.exe")
{
HandleExplorerStart(process);
}
else if (!IsAllowed(process) && !TryTerminate(process))
{
AddFailed(process, failed);
}
else if (IsWhitelisted(process, out var applicationId))
{
HandleInstanceStart(applicationId.Value, process);
}
}
foreach (var process in terminated)
{
logger.Debug($"Process {process} has been terminated.");
processes.Remove(process);
}
if (failed.Any())
{
logger.Warn($"Failed to terminate these blacklisted applications: {string.Join(", ", failed.Select(a => a.Name))}.");
TerminationFailed?.Invoke(failed);
}
timer.Start();
}
private void AddFailed(IProcess process, List<RunningApplication> failed)
@@ -197,10 +255,10 @@ namespace SafeExamBrowser.Monitoring.Applications
isRuntime &= process.Name == "SafeExamBrowser.exe";
isRuntime &= process.OriginalName == "SafeExamBrowser.exe";
#if !DEBUG
isClient &= process.Signature == "2bc82fe8e56a39f96bc6c4b91d6703a0379b76a2";
isRuntime &= process.Signature == "2bc82fe8e56a39f96bc6c4b91d6703a0379b76a2";
#endif
//#if !DEBUG
// isClient &= process.Signature == "2bc82fe8e56a39f96bc6c4b91d6703a0379b76a2";
// isRuntime &= process.Signature == "2bc82fe8e56a39f96bc6c4b91d6703a0379b76a2";
//#endif
return isClient || isRuntime;
}