Fixed cpu info for linux

src/DeviceId.Linux/Components/CpuInfoIdComponent.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Security.Cryptography;
+using System.Text;
+using DeviceId.Internal.CommandExecutors;
+
+namespace DeviceId.Linux.Components;
+
+/// <summary>
+/// An implementation of <see cref="IDeviceIdComponent"/>
+/// </summary>
+public class CpuInfoIdComponent : IDeviceIdComponent
+{
+    /// <summary>
+    /// Command executor.
+    /// </summary>
+    private readonly ICommandExecutor _commandExecutor;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="CpuInfoIdComponent"/> class.
+    /// </summary>
+    public CpuInfoIdComponent() : this(CommandExecutor.Bash) { }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="CpuInfoIdComponent"/> class.
+    /// </summary>
+    /// <param name="commandExecutor">The command executor to use.</param>
+    internal CpuInfoIdComponent(ICommandExecutor commandExecutor)
+    {
+        _commandExecutor = commandExecutor;
+    }
+
+    /// <summary>
+    /// Gets the component value.
+    /// </summary>
+    /// <returns>The component value.</returns>
+    public string GetValue()
+    {
+        try
+        {
+            string content = _commandExecutor.Execute("cat /proc/cpuinfo | grep -v \"cpu MHz\"");
+            using var hasher = MD5.Create();
+            var hash = hasher.ComputeHash(Encoding.ASCII.GetBytes(content));
+            return BitConverter.ToString(hash).Replace("-", "").ToUpper();
+        }
+        catch
+        {
+            // Can fail if we have no permissions to access the file.
+        }
+        return null;
+    }
+}

src/DeviceId.Linux/LinuxDeviceIdBuilderExtensions.cs

@@ -55,7 +55,7 @@ public static LinuxDeviceIdBuilder AddProductUuid(this LinuxDeviceIdBuilder buil
     /// <returns>The <see cref="LinuxDeviceIdBuilder"/> instance.</returns>
     public static LinuxDeviceIdBuilder AddCpuInfo(this LinuxDeviceIdBuilder builder)
     {
-        return builder.AddComponent("CPUInfo", new FileContentsDeviceIdComponent("/proc/cpuinfo", true));
+        return builder.AddComponent("CPUInfo", new CpuInfoIdComponent());
     }
 
     /// <summary>

src/DeviceId.Windows.Mmi/DeviceId.Windows.Mmi.csproj

@@ -4,6 +4,7 @@
     <PackageId>DeviceId.Windows.Mmi</PackageId>
     <Title>DeviceId (Windows / MMI)</Title>
     <Description>Provides extra Windows-specific components (using MMI) for the DeviceId package.</Description>
+    <EnableWindowsTargeting>true</EnableWindowsTargeting>
     <VersionPrefix>6.8.0</VersionPrefix>
   </PropertyGroup>
 

src/DeviceId.Windows.Wmi/DeviceId.Windows.Wmi.csproj

@@ -4,6 +4,7 @@
     <PackageId>DeviceId.Windows.Wmi</PackageId>
     <Title>DeviceId (Windows / WMI)</Title>
     <Description>Provides extra Windows-specific components (using WMI) for the DeviceId package.</Description>
+    <EnableWindowsTargeting>true</EnableWindowsTargeting>
     <VersionPrefix>6.8.0</VersionPrefix>
   </PropertyGroup>
 

src/DeviceId.Windows/DeviceId.Windows.csproj

@@ -4,6 +4,7 @@
     <PackageId>DeviceId.Windows</PackageId>
     <Title>DeviceId (Windows)</Title>
     <Description>Provides Windows-specific components for the DeviceId package.</Description>
+    <EnableWindowsTargeting>true</EnableWindowsTargeting>
     <VersionPrefix>6.8.0</VersionPrefix>
   </PropertyGroup>
 

test/DeviceId.Tests/Components/CpuInfoIdComponentTests.cs

@@ -0,0 +1,21 @@
+using DeviceId.Linux.Components;
+using FluentAssertions;
+using Xunit;
+
+namespace DeviceId.Tests.Components;
+
+public class CpuInfoIdComponentTests
+{
+    [Fact]
+    public void GetValue_ShouldReturnSameValueForMultipleExecutions()
+    {
+        var component = new CpuInfoIdComponent();
+        var expectedComponentValue = component.GetValue();
+
+        for (int i = 0; i < 10; i++)
+        {
+            var currentValue = component.GetValue();
+            currentValue.Should().Be(expectedComponentValue);
+        }
+    }
+}