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package hyperv
import (
"bufio"
"bytes"
"errors"
"os/exec"
"strings"
"fmt"
"github.com/docker/machine/libmachine/log"
)
var powershell string
var (
ErrPowerShellNotFound = errors.New("Powershell was not found in the path")
ErrNotAdministrator = errors.New("Hyper-v commands have to be run as an Administrator")
ErrNotInstalled = errors.New("Hyper-V PowerShell Module is not available")
)
func init() {
powershell, _ = exec.LookPath("powershell.exe")
}
func cmdOut(args ...string) (string, error) {
args = append([]string{"-NoProfile", "-NonInteractive"}, args...)
cmd := exec.Command(powershell, args...)
log.Debugf("[executing ==>] : %v %v", powershell, strings.Join(args, " "))
var stdout bytes.Buffer
var stderr bytes.Buffer
cmd.Stdout = &stdout
cmd.Stderr = &stderr
err := cmd.Run()
log.Debugf("[stdout =====>] : %s", stdout.String())
log.Debugf("[stderr =====>] : %s", stderr.String())
return stdout.String(), err
}
func cmd(args ...string) error {
_, err := cmdOut(args...)
return err
}
func parseLines(stdout string) []string {
resp := []string{}
s := bufio.NewScanner(strings.NewReader(stdout))
for s.Scan() {
resp = append(resp, s.Text())
}
return resp
}
func hypervAvailable() error {
stdout, err := cmdOut("@(Get-Module -ListAvailable hyper-v).Name | Get-Unique")
if err != nil {
return err
}
resp := parseLines(stdout)
if resp[0] != "Hyper-V" {
return ErrNotInstalled
}
return nil
}
func isAdministrator() (bool, error) {
hypervAdmin := isHypervAdministrator()
if hypervAdmin {
return true, nil
}
windowsAdmin, err := isWindowsAdministrator()
if err != nil {
return false, err
}
return windowsAdmin, nil
}
func isHypervAdministrator() bool {
stdout, err := cmdOut(`@([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole("S-1-5-32-578")`)
if err != nil {
log.Debug(err)
return false
}
resp := parseLines(stdout)
return resp[0] == "True"
}
func isWindowsAdministrator() (bool, error) {
stdout, err := cmdOut(`@([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")`)
if err != nil {
return false, err
}
resp := parseLines(stdout)
return resp[0] == "True", nil
}
func quote(text string) string {
return fmt.Sprintf("'%s'", text)
}
func toMb(value int) string {
return fmt.Sprintf("%dMB", value)
}
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