Windows: do not use 'uname' for doing OS validation

validators/os_validator.go → validators/os_validator_unix.go

@@ -1,3 +1,6 @@
+//go:build !windows
+// +build !windows
+
 /*
 Copyright 2016 The Kubernetes Authors.
 
@@ -38,7 +41,7 @@ func (o *OSValidator) Name() string {
 func (o *OSValidator) Validate(spec SysSpec) ([]error, []error) {
 	os, err := exec.Command("uname").CombinedOutput()
 	if err != nil {
-		return nil, []error{fmt.Errorf("failed to get os name: %w", err)}
+		return nil, []error{fmt.Errorf("failed to get OS name: %w", err)}
 	}
 	if err = o.validateOS(strings.TrimSpace(string(os)), spec.OS); err != nil {
 		return nil, []error{err}

validators/os_validator_test.go → validators/os_validator_unix_test.go

@@ -1,3 +1,6 @@
+//go:build !windows
+// +build !windows
+
 /*
 Copyright 2016 The Kubernetes Authors.
 

validators/os_validator_windows.go

@@ -0,0 +1,62 @@
+//go:build windows
+// +build windows
+
+/*
+Copyright 2024 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package system
+
+import (
+	"fmt"
+	"os/exec"
+	"strings"
+)
+
+var _ Validator = &OSValidator{}
+
+// OSValidator validates OS.
+type OSValidator struct {
+	Reporter Reporter
+}
+
+// Name is part of the system.Validator interface.
+func (o *OSValidator) Name() string {
+	return "os"
+}
+
+// Validate is part of the system.Validator interface.
+func (o *OSValidator) Validate(spec SysSpec) ([]error, []error) {
+	args := []string{`(Get-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion').ProductName`}
+	os, err := exec.Command("powershell", args...).Output()
+	if err != nil {
+		return nil, []error{fmt.Errorf("failed to get OS name: %w", err)}
+	}
+	if err = o.validateOS(strings.TrimSpace(string(os)), spec.OS); err != nil {
+		return nil, []error{err}
+	}
+	return nil, nil
+}
+
+// validateOS would check if the reported string such as 'Windows Server 2019' contains
+// the required OS prefix from the spec 'Windows Server'.
+func (o *OSValidator) validateOS(os, specOS string) error {
+	if !strings.HasPrefix(os, specOS) {
+		o.Reporter.Report("OS", os, bad)
+		return fmt.Errorf("unsupported operating system: %s", os)
+	}
+	o.Reporter.Report("OS", os, good)
+	return nil
+}

validators/os_validator_windows_test.go

@@ -0,0 +1,59 @@
+//go:build windows
+// +build windows
+
+/*
+Copyright 2024 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package system
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestValidateOS(t *testing.T) {
+	v := &OSValidator{
+		Reporter: DefaultReporter,
+	}
+	specOS := "Windows Server"
+	for _, test := range []struct {
+		os  string
+		err bool
+	}{
+		{
+			os:  "Windows Server",
+			err: false,
+		},
+		{
+			os:  "Windows 10 Enterprise",
+			err: true,
+		},
+		{
+			os:  "Windows",
+			err: true,
+		},
+	} {
+		t.Run(test.os, func(t *testing.T) {
+			err := v.validateOS(test.os, specOS)
+			if !test.err {
+				assert.Nil(t, err, "Expect error not to occur with os %q", test.os)
+			} else {
+				assert.NotNil(t, err, "Expect error to occur with os %q", test.os)
+			}
+		})
+	}
+}

validators/types_windows.go

@@ -24,9 +24,9 @@ import (
 	"strings"
 )
 
-// DefaultSysSpec is the default SysSpec for Windows
+// DefaultSysSpec is the default SysSpec for Windows.
 var DefaultSysSpec = SysSpec{
-	OS: "Microsoft Windows Server 2016",
+	OS: "Windows Server",
 	KernelSpec: KernelSpec{
 		Versions:     []string{`10\.0\.1439[3-9]`, `10\.0\.14[4-9][0-9]{2}`, `10\.0\.1[5-9][0-9]{3}`, `10\.0\.[2-9][0-9]{4}`, `10\.[1-9]+\.[0-9]+`}, //requires >= '10.0.14393'
 		VersionsNote: "The kernel version should be >= '10.0.14393'",
@@ -47,9 +47,11 @@ type KernelValidatorHelperImpl struct{}
 
 var _ KernelValidatorHelper = &KernelValidatorHelperImpl{}
 
-// GetKernelReleaseVersion returns the windows release version (ex. 10.0.14393) as a string
+// GetKernelReleaseVersion returns the Windows release version (e.g. 10.0.14393) as a string.
+// It does not include the UBR (revision)
 func (o *KernelValidatorHelperImpl) GetKernelReleaseVersion() (string, error) {
-	args := []string{"(Get-CimInstance Win32_OperatingSystem).Version"}
+	args := []string{`$props = Get-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion'; ` +
+		`"$($props.CurrentMajorVersionNumber).$($props.CurrentMinorVersionNumber).$($props.CurrentBuildNumber)"`}
 	releaseVersion, err := exec.Command("powershell", args...).Output()
 	if err != nil {
 		return "", err