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[host][windows] Refactor code to query registry via golang.org/x/sys/windows/registry

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This commit is contained in:
Lomanic 2018-06-17 23:48:45 +02:00
parent eb11fd6e2f
commit c729bbd6a8
1 changed files with 3 additions and 19 deletions
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22
host/host_windows.go
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@ -15,7 +15,6 @@ import (
"github.com/shirou/gopsutil/internal/common"
process "github.com/shirou/gopsutil/process"
"golang.org/x/sys/windows"
"golang.org/x/sys/windows/registry"
)
@ -94,30 +93,15 @@ func InfoWithContext(ctx context.Context) (*InfoStat, error) {
}
func getMachineGuid() (string, error) {
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)
k, err := registry.OpenKey(registry.LOCAL_MACHINE, `SOFTWARE\Microsoft\Cryptography`, registry.QUERY_VALUE)
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)
defer k.Close()
hostID, _, err := k.GetStringValue("MachineGuid")
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
}