open-consul/vendor/github.com/shirou/gopsutil/host/host_windows.go

296 lines
8.3 KiB
Go

// +build windows
package host
import (
"context"
"fmt"
"math"
"os"
"runtime"
"strings"
"sync/atomic"
"syscall"
"time"
"unsafe"
"github.com/StackExchange/wmi"
"github.com/shirou/gopsutil/internal/common"
process "github.com/shirou/gopsutil/process"
"golang.org/x/sys/windows"
)
var (
procGetSystemTimeAsFileTime = common.Modkernel32.NewProc("GetSystemTimeAsFileTime")
procGetTickCount32 = common.Modkernel32.NewProc("GetTickCount")
procGetTickCount64 = common.Modkernel32.NewProc("GetTickCount64")
procRtlGetVersion = common.ModNt.NewProc("RtlGetVersion")
)
// https://docs.microsoft.com/en-us/windows-hardware/drivers/ddi/content/wdm/ns-wdm-_osversioninfoexw
type osVersionInfoExW struct {
dwOSVersionInfoSize uint32
dwMajorVersion uint32
dwMinorVersion uint32
dwBuildNumber uint32
dwPlatformId uint32
szCSDVersion [128]uint16
wServicePackMajor uint16
wServicePackMinor uint16
wSuiteMask uint16
wProductType uint8
wReserved uint8
}
type msAcpi_ThermalZoneTemperature struct {
Active bool
CriticalTripPoint uint32
CurrentTemperature uint32
InstanceName string
}
func Info() (*InfoStat, error) {
return InfoWithContext(context.Background())
}
func InfoWithContext(ctx context.Context) (*InfoStat, error) {
ret := &InfoStat{
OS: runtime.GOOS,
}
{
hostname, err := os.Hostname()
if err == nil {
ret.Hostname = hostname
}
}
{
platform, family, version, err := PlatformInformationWithContext(ctx)
if err == nil {
ret.Platform = platform
ret.PlatformFamily = family
ret.PlatformVersion = version
} else {
return ret, err
}
}
{
boot, err := BootTime()
if err == nil {
ret.BootTime = boot
ret.Uptime, _ = Uptime()
}
}
{
hostID, err := getMachineGuid()
if err == nil {
ret.HostID = strings.ToLower(hostID)
}
}
{
procs, err := process.Pids()
if err == nil {
ret.Procs = uint64(len(procs))
}
}
return ret, nil
}
func getMachineGuid() (string, error) {
// there has been reports of issues on 32bit using golang.org/x/sys/windows/registry, see https://github.com/shirou/gopsutil/pull/312#issuecomment-277422612
// for rationale of using windows.RegOpenKeyEx/RegQueryValueEx instead of registry.OpenKey/GetStringValue
var h windows.Handle
err := windows.RegOpenKeyEx(windows.HKEY_LOCAL_MACHINE, windows.StringToUTF16Ptr(`SOFTWARE\Microsoft\Cryptography`), 0, windows.KEY_READ|windows.KEY_WOW64_64KEY, &h)
if err != nil {
return "", err
}
defer windows.RegCloseKey(h)
const windowsRegBufLen = 74 // len(`{`) + len(`abcdefgh-1234-456789012-123345456671` * 2) + len(`}`) // 2 == bytes/UTF16
const uuidLen = 36
var regBuf [windowsRegBufLen]uint16
bufLen := uint32(windowsRegBufLen)
var valType uint32
err = windows.RegQueryValueEx(h, windows.StringToUTF16Ptr(`MachineGuid`), nil, &valType, (*byte)(unsafe.Pointer(&regBuf[0])), &bufLen)
if err != nil {
return "", err
}
hostID := windows.UTF16ToString(regBuf[:])
hostIDLen := len(hostID)
if hostIDLen != uuidLen {
return "", fmt.Errorf("HostID incorrect: %q\n", hostID)
}
return hostID, nil
}
func Uptime() (uint64, error) {
return UptimeWithContext(context.Background())
}
func UptimeWithContext(ctx context.Context) (uint64, error) {
procGetTickCount := procGetTickCount64
err := procGetTickCount64.Find()
if err != nil {
procGetTickCount = procGetTickCount32 // handle WinXP, but keep in mind that "the time will wrap around to zero if the system is run continuously for 49.7 days." from MSDN
}
r1, _, lastErr := syscall.Syscall(procGetTickCount.Addr(), 0, 0, 0, 0)
if lastErr != 0 {
return 0, lastErr
}
return uint64((time.Duration(r1) * time.Millisecond).Seconds()), nil
}
func bootTimeFromUptime(up uint64) uint64 {
return uint64(time.Now().Unix()) - up
}
// cachedBootTime must be accessed via atomic.Load/StoreUint64
var cachedBootTime uint64
func BootTime() (uint64, error) {
return BootTimeWithContext(context.Background())
}
func BootTimeWithContext(ctx context.Context) (uint64, error) {
t := atomic.LoadUint64(&cachedBootTime)
if t != 0 {
return t, nil
}
up, err := Uptime()
if err != nil {
return 0, err
}
t = bootTimeFromUptime(up)
atomic.StoreUint64(&cachedBootTime, t)
return t, nil
}
func PlatformInformation() (platform string, family string, version string, err error) {
return PlatformInformationWithContext(context.Background())
}
func PlatformInformationWithContext(ctx context.Context) (platform string, family string, version string, err error) {
// GetVersionEx lies on Windows 8.1 and returns as Windows 8 if we don't declare compatibility in manifest
// RtlGetVersion bypasses this lying layer and returns the true Windows version
// https://docs.microsoft.com/en-us/windows-hardware/drivers/ddi/content/wdm/nf-wdm-rtlgetversion
// https://docs.microsoft.com/en-us/windows-hardware/drivers/ddi/content/wdm/ns-wdm-_osversioninfoexw
var osInfo osVersionInfoExW
osInfo.dwOSVersionInfoSize = uint32(unsafe.Sizeof(osInfo))
ret, _, err := procRtlGetVersion.Call(uintptr(unsafe.Pointer(&osInfo)))
if ret != 0 {
return
}
// Platform
var h windows.Handle // like getMachineGuid(), we query the registry using the raw windows.RegOpenKeyEx/RegQueryValueEx
err = windows.RegOpenKeyEx(windows.HKEY_LOCAL_MACHINE, windows.StringToUTF16Ptr(`SOFTWARE\Microsoft\Windows NT\CurrentVersion`), 0, windows.KEY_READ|windows.KEY_WOW64_64KEY, &h)
if err != nil {
return
}
defer windows.RegCloseKey(h)
var bufLen uint32
var valType uint32
err = windows.RegQueryValueEx(h, windows.StringToUTF16Ptr(`ProductName`), nil, &valType, nil, &bufLen)
if err != nil {
return
}
regBuf := make([]uint16, bufLen/2+1)
err = windows.RegQueryValueEx(h, windows.StringToUTF16Ptr(`ProductName`), nil, &valType, (*byte)(unsafe.Pointer(&regBuf[0])), &bufLen)
if err != nil {
return
}
platform = windows.UTF16ToString(regBuf[:])
if !strings.HasPrefix(platform, "Microsoft") {
platform = "Microsoft " + platform
}
err = windows.RegQueryValueEx(h, windows.StringToUTF16Ptr(`CSDVersion`), nil, &valType, nil, &bufLen) // append Service Pack number, only on success
if err == nil { // don't return an error if only the Service Pack retrieval fails
regBuf = make([]uint16, bufLen/2+1)
err = windows.RegQueryValueEx(h, windows.StringToUTF16Ptr(`CSDVersion`), nil, &valType, (*byte)(unsafe.Pointer(&regBuf[0])), &bufLen)
if err == nil {
platform += " " + windows.UTF16ToString(regBuf[:])
}
}
// PlatformFamily
switch osInfo.wProductType {
case 1:
family = "Standalone Workstation"
case 2:
family = "Server (Domain Controller)"
case 3:
family = "Server"
}
// Platform Version
version = fmt.Sprintf("%d.%d.%d Build %d", osInfo.dwMajorVersion, osInfo.dwMinorVersion, osInfo.dwBuildNumber, osInfo.dwBuildNumber)
return platform, family, version, nil
}
func Users() ([]UserStat, error) {
return UsersWithContext(context.Background())
}
func UsersWithContext(ctx context.Context) ([]UserStat, error) {
var ret []UserStat
return ret, nil
}
func SensorsTemperatures() ([]TemperatureStat, error) {
return SensorsTemperaturesWithContext(context.Background())
}
func SensorsTemperaturesWithContext(ctx context.Context) ([]TemperatureStat, error) {
var ret []TemperatureStat
var dst []msAcpi_ThermalZoneTemperature
q := wmi.CreateQuery(&dst, "")
if err := common.WMIQueryWithContext(ctx, q, &dst, nil, "root/wmi"); err != nil {
return ret, err
}
for _, v := range dst {
ts := TemperatureStat{
SensorKey: v.InstanceName,
Temperature: kelvinToCelsius(v.CurrentTemperature, 2),
}
ret = append(ret, ts)
}
return ret, nil
}
func kelvinToCelsius(temp uint32, n int) float64 {
// wmi return temperature Kelvin * 10, so need to divide the result by 10,
// and then minus 273.15 to get °Celsius.
t := float64(temp/10) - 273.15
n10 := math.Pow10(n)
return math.Trunc((t+0.5/n10)*n10) / n10
}
func Virtualization() (string, string, error) {
return VirtualizationWithContext(context.Background())
}
func VirtualizationWithContext(ctx context.Context) (string, string, error) {
return "", "", common.ErrNotImplementedError
}
func KernelVersion() (string, error) {
return KernelVersionWithContext(context.Background())
}
func KernelVersionWithContext(ctx context.Context) (string, error) {
_, _, version, err := PlatformInformation()
return version, err
}