added truncated data indicator (ETW max 64KB buffer issue)

okieselbach · Sep 20, 2022 · bd80d80 · bd80d80
1 parent a2c33aa
commit bd80d80
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Showing 8 changed files with 38 additions and 8 deletions.
diff --git a/SyncMLViewer/MainWindow.xaml b/SyncMLViewer/MainWindow.xaml
@@ -124,5 +124,6 @@
         <Label x:Name="LabelDeviceName" Content="DeviceName" Margin="0,0,22.6,11.4" HorizontalAlignment="Right" Width="190" Height="34" VerticalAlignment="Bottom" FontSize="18" ToolTip="The name of the device."/>
         <Button x:Name="ButtonRestartUpdate" Content="_Update to version [0.0.0]" Margin="0,0,224.6,12.4" Click="ButtonRestartUpdate_Click" HorizontalAlignment="Right" Width="159" Height="29" VerticalAlignment="Bottom" Visibility="Visible"/>
         <Label x:Name="LabelUpdateIndicator" Content="Update [0.0.0] available." Margin="0,0,212.6,13.4" HorizontalAlignment="Right" Width="153" Height="26" VerticalAlignment="Bottom" Visibility="Hidden"/>
+        <Label x:Name="LabelTruncatedDataIndicator" Content="Received data truncated (ETW can capture max 64KB)" Margin="268,0,438,13" Height="26" VerticalAlignment="Bottom" Visibility="Visible"/>
     </Grid>
 </Window>
diff --git a/SyncMLViewer/MainWindow.xaml.cs b/SyncMLViewer/MainWindow.xaml.cs
@@ -26,6 +26,7 @@
 using System.Xml.XPath;
 using SyncMLViewer.Properties;
 using Path = System.IO.Path;
+using System.Xml;
 
 namespace SyncMLViewer
 {
@@ -78,6 +79,7 @@ public MainWindow()
             LabelStatus.Visibility = Visibility.Hidden;
             LabelStatusTop.Visibility = Visibility.Hidden;
             ButtonRestartUpdate.Visibility = Visibility.Hidden;
+            LabelTruncatedDataIndicator.Visibility = Visibility.Hidden;
             var version = Assembly.GetExecutingAssembly().GetName().Version;
             _version = $"{version.Major}.{version.Minor}.{version.Build}";
             this.Title += $" - {_version}";
@@ -229,6 +231,10 @@ private static void WorkerTraceEvents(object sender, DoWorkEventArgs e)
                         traceEventSession.EnableProvider(OmaDmClient);
                         traceEventSession.EnableProvider(OmaDmClientProvider);
 
+                        // https://docs.microsoft.com/en-us/windows/win32/api/evntrace/ns-evntrace-event_trace_properties
+                        // !!! Regardless of buffer size, ETW cannot collect events larger than 64KB.
+                        // This results in truncated policies... :-( unaware how to deal with this to get the full event data then...
+
                         new RegisteredTraceEventParser(traceEventSource).All += (data =>
                             (sender as BackgroundWorker)?.ReportProgress(0, data.Clone()));
                         traceEventSource.Process();
@@ -500,6 +506,26 @@ private void ListBoxMessages_SelectionChanged(object sender, SelectionChangedEve
             if (!(ListBoxMessages.SelectedItem is SyncMlMessage selectedItem))
                 return;
             TextEditorMessages.Text = selectedItem.Xml;
+
+            bool wellFormatedXml = true;
+            try
+            {
+                XElement.Parse(selectedItem.Xml);
+            }
+            catch (Exception)
+            {
+                wellFormatedXml = false;
+            }
+
+            if (selectedItem.Xml.Length > 60 * 1000 && !wellFormatedXml)
+            {
+                LabelTruncatedDataIndicator.Visibility = Visibility.Visible;
+            }
+            else
+            {
+                LabelTruncatedDataIndicator.Visibility = Visibility.Hidden;
+            }
+
             _foldingStrategy.UpdateFoldings(_foldingManager, TextEditorMessages.Document);
 
             CheckBoxHtmlDecode.IsChecked = false;

diff --git a/SyncMLViewer/Properties/AssemblyInfo.cs b/SyncMLViewer/Properties/AssemblyInfo.cs
@@ -12,7 +12,7 @@
 [assembly: AssemblyConfiguration("")]
 [assembly: AssemblyCompany("oliverkieselbach.com")]
 [assembly: AssemblyProduct("SyncMLViewer")]
-[assembly: AssemblyCopyright("Copyright © 2021")]
+[assembly: AssemblyCopyright("Copyright © 2022")]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
 
@@ -51,5 +51,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.7.0")]
-[assembly: AssemblyFileVersion("1.0.7.0")]
+[assembly: AssemblyVersion("1.0.8.0")]
+[assembly: AssemblyFileVersion("1.0.8.0")]
diff --git a/SyncMLViewer/Properties/Resources.Designer.cs b/SyncMLViewer/Properties/Resources.Designer.cs
diff --git a/SyncMLViewer/Properties/Resources.resx b/SyncMLViewer/Properties/Resources.resx
@@ -148,6 +148,9 @@ https://gist.github.com/mattifestation/04e8299d8bc97ef825affe733310f7bd/
 More MDM ETW Provider details
 https://docs.microsoft.com/en-us/windows/client-management/mdm/diagnose-mdm-failures-in-windows-10
 
+Regardless of buffer size, ETW cannot collect events larger than 64KB. :-(
+https://docs.microsoft.com/en-us/windows/win32/api/evntrace/ns-evntrace-event_trace_properties
+
 [MS-MDM]: Mobile Device Management Protocol
 https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-mdm/
 

diff --git a/SyncMLViewer/dist/SyncMLViewer-v108.zip b/SyncMLViewer/dist/SyncMLViewer-v108.zip
diff --git a/SyncMLViewer/dist/update.xml b/SyncMLViewer/dist/update.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <LatestVersion>
-  <VersionNumber>1.0.7</VersionNumber>
-  <DownloadURL>https://github.com/okieselbach/SyncMLViewer/raw/master/SyncMLViewer/dist/SyncMLViewer-v107.zip</DownloadURL>
+  <VersionNumber>1.0.8</VersionNumber>
+  <DownloadURL>https://github.com/okieselbach/SyncMLViewer/raw/master/SyncMLViewer/dist/SyncMLViewer-v108.zip</DownloadURL>
 </LatestVersion>
diff --git a/SyncMLViewer/dist/update2.xml b/SyncMLViewer/dist/update2.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <LatestVersion>
-  <VersionNumber>1.0.7</VersionNumber>
-  <DownloadURL>https://github.com/okieselbach/SyncMLViewer/raw/master/SyncMLViewer/dist/SyncMLViewer-v107.zip</DownloadURL>
+  <VersionNumber>1.0.8</VersionNumber>
+  <DownloadURL>https://github.com/okieselbach/SyncMLViewer/raw/master/SyncMLViewer/dist/SyncMLViewer-v108.zip</DownloadURL>
 </LatestVersion>