1.1 --- a/Hardware/Computer.cs	Thu Aug 12 20:53:27 2010 +0000
     1.2 +++ b/Hardware/Computer.cs	Sun Aug 15 14:46:58 2010 +0000
     1.3 @@ -41,6 +41,9 @@
     1.4  using System.Globalization;
     1.5  using System.Text;
     1.6  using System.Threading;
     1.7 +using System.Security;
     1.8 +using System.Security.Permissions;
     1.9 +
    1.10  
    1.11  namespace OpenHardwareMonitor.Hardware {
    1.12  
    1.13 @@ -86,10 +89,13 @@
    1.14            HardwareRemoved(hardware);
    1.15      }
    1.16  
    1.17 +    [SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)]
    1.18      public void Open() {
    1.19        if (open)
    1.20          return;
    1.21  
    1.22 +      WinRing0.Open();
    1.23 +
    1.24        Add(new Mainboard.MainboardGroup(settings));
    1.25        Add(new CPU.CPUGroup(settings));
    1.26        Add(new ATI.ATIGroup(settings));
    1.27 @@ -101,9 +107,11 @@
    1.28  
    1.29        open = true;
    1.30      }
    1.31 -
    1.32 +    
    1.33      public bool HDDEnabled {
    1.34        get { return hddEnabled; }
    1.35 +
    1.36 +      [SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)]
    1.37        set {
    1.38          if (open && value && !hddEnabled) {
    1.39            Add(new HDD.HDDGroup(settings));
    1.40 @@ -129,7 +137,7 @@
    1.41        }
    1.42      }
    1.43  
    1.44 -    private void NewSection(TextWriter writer) {
    1.45 +    private static void NewSection(TextWriter writer) {
    1.46        for (int i = 0; i < 8; i++)
    1.47          writer.Write("----------");
    1.48        writer.WriteLine();
    1.49 @@ -186,7 +194,7 @@
    1.50  
    1.51      private void ReportHardware(IHardware hardware, TextWriter w) {
    1.52        string hardwareReport = hardware.GetReport();
    1.53 -      if (hardwareReport != null && hardwareReport != "") {
    1.54 +      if (!string.IsNullOrEmpty(hardwareReport)) {
    1.55          NewSection(w);
    1.56          w.Write(hardwareReport);
    1.57        }
    1.58 @@ -237,7 +245,7 @@
    1.59  
    1.60          foreach (IGroup group in groups) {
    1.61            string report = group.GetReport();
    1.62 -          if (report != null && report != "") {
    1.63 +          if (!string.IsNullOrEmpty(report)) {
    1.64              NewSection(w);
    1.65              w.Write(report);
    1.66            }
    1.67 @@ -259,6 +267,8 @@
    1.68          group.Close();
    1.69        groups.Clear();
    1.70  
    1.71 +      WinRing0.Close();
    1.72 +
    1.73        open = false;
    1.74      }
    1.75  
    1.76 @@ -266,8 +276,9 @@
    1.77      public event HardwareEventHandler HardwareRemoved;
    1.78  
    1.79      public void Accept(IVisitor visitor) {
    1.80 -      if (visitor != null)
    1.81 -        visitor.VisitComputer(this);
    1.82 +      if (visitor == null)
    1.83 +        throw new ArgumentNullException("visitor");
    1.84 +      visitor.VisitComputer(this);
    1.85      }
    1.86  
    1.87      public void Traverse(IVisitor visitor) {