[management] network map from nmap data type (#6919)

Signed-off-by: Dmitri Dolguikh <dmitri.external@netbird.io>
Co-authored-by: Dmitri Dolguikh <dmitri.external@netbird.io>

shared/management/networkmap/nmdata/posture_os_version.go

@@ -0,0 +1,79 @@
+package nmdata
+
+import (
+	"strings"
+
+	"github.com/hashicorp/go-version"
+)
+
+// MinVersionCheck is the slim twin of posture.MinVersionCheck.
+type MinVersionCheck struct {
+	MinVersion string
+}
+
+// MinKernelVersionCheck is the slim twin of posture.MinKernelVersionCheck.
+type MinKernelVersionCheck struct {
+	MinKernelVersion string
+}
+
+// OSVersionCheck is the slim twin of posture.OSVersionCheck.
+type OSVersionCheck struct {
+	Android *MinVersionCheck
+	Darwin  *MinVersionCheck
+	Ios     *MinVersionCheck
+	Linux   *MinKernelVersionCheck
+	Windows *MinKernelVersionCheck
+}
+
+func (c *OSVersionCheck) check(peer *Peer) (bool, error) {
+	switch peer.Meta.GoOS {
+	case "android":
+		return checkMinVersion(peer.Meta.OSVersion, c.Android)
+	case "darwin":
+		return checkMinVersion(peer.Meta.OSVersion, c.Darwin)
+	case "ios":
+		return checkMinVersion(peer.Meta.OSVersion, c.Ios)
+	case "linux":
+		kernelVersion := strings.Split(peer.Meta.KernelVersion, "-")[0]
+		return checkMinKernelVersion(kernelVersion, c.Linux)
+	case "windows":
+		return checkMinKernelVersion(peer.Meta.KernelVersion, c.Windows)
+	}
+	return true, nil
+}
+
+func checkMinVersion(peerVersion string, check *MinVersionCheck) (bool, error) {
+	if check == nil {
+		return false, nil
+	}
+
+	peerNBVersion, err := version.NewVersion(peerVersion)
+	if err != nil {
+		return false, err
+	}
+
+	constraints, err := version.NewConstraint(">= " + check.MinVersion)
+	if err != nil {
+		return false, err
+	}
+
+	return constraints.Check(peerNBVersion), nil
+}
+
+func checkMinKernelVersion(peerVersion string, check *MinKernelVersionCheck) (bool, error) {
+	if check == nil {
+		return false, nil
+	}
+
+	peerNBVersion, err := version.NewVersion(peerVersion)
+	if err != nil {
+		return false, err
+	}
+
+	constraints, err := version.NewConstraint(">= " + check.MinKernelVersion)
+	if err != nil {
+		return false, err
+	}
+
+	return constraints.Check(peerNBVersion), nil
+}