Initial QSfera import

Server/vendor/github.com/rs/xid/hostid_darwin.go

@@ -0,0 +1,34 @@
+// +build darwin
+
+package xid
+
+import (
+	"errors"
+	"os/exec"
+	"strings"
+)
+
+func readPlatformMachineID() (string, error) {
+	ioreg, err := exec.LookPath("ioreg")
+	if err != nil {
+		return "", err
+	}
+
+	cmd := exec.Command(ioreg, "-rd1", "-c", "IOPlatformExpertDevice")
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		return "", err
+	}
+
+	for _, line := range strings.Split(string(out), "\n") {
+		if strings.Contains(line, "IOPlatformUUID") {
+			parts := strings.SplitAfter(line, `" = "`)
+			if len(parts) == 2 {
+				uuid := strings.TrimRight(parts[1], `"`)
+				return strings.ToLower(uuid), nil
+			}
+		}
+	}
+
+	return "", errors.New("cannot find host id")
+}