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/
driver_ps_4.go
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/
driver_ps_4.go
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License. See the LICENSE file in the project root for license information.
package powershell
import (
"bytes"
"fmt"
"github.com/mitchellh/packer/packer"
"log"
"os/exec"
"runtime"
"strconv"
"strings"
)
type PS4Driver struct {
ExecPath string
}
func NewPS4Driver() (*PS4Driver, error) {
appliesTo := "Applies to Windows 8.1, Windows PowerShell 4.0, Windows Server 2012 R2 only"
// Check this is Windows
if runtime.GOOS != "windows" {
err := fmt.Errorf("%s", appliesTo)
return nil, err
}
ps4Driver := &PS4Driver{ExecPath: "powershell"}
if err := ps4Driver.Verify(); err != nil {
return nil, err
}
log.Printf("ExecPath: %s", ps4Driver.ExecPath)
return ps4Driver, nil
}
func (d *PS4Driver) Verify() error {
if err := d.verifyPSVersion(); err != nil {
return err
}
if err := d.verifyElevatedMode(); err != nil {
return err
}
if err := d.setExecutionPolicy(); err != nil {
return err
}
return nil
}
func (d *PS4Driver) verifyPSVersion() error {
log.Printf("Enter method: %s", "verifyPSVersion")
// check PS is available and is of proper version
versionCmd := "$host.version.Major"
cmd := exec.Command(d.ExecPath, versionCmd)
cmdOut, err := cmd.Output()
if err != nil {
return err
}
versionOutput := strings.TrimSpace(string(cmdOut))
log.Printf("%s output: %s", versionCmd, versionOutput)
ver, err := strconv.ParseInt(versionOutput, 10, 32)
if err != nil {
return err
}
if ver < 4 {
err := fmt.Errorf("%s", "Windows PowerShell version 4.0 or higher is expected")
return err
}
return nil
}
func (d *PS4Driver) verifyElevatedMode() error {
log.Printf("Enter method: %s", "verifyElevatedMode")
var blockBuffer bytes.Buffer
blockBuffer.WriteString("Invoke-Command -scriptblock {function foo(){try{")
blockBuffer.WriteString("$myWindowsID=[System.Security.Principal.WindowsIdentity]::GetCurrent();")
blockBuffer.WriteString("$myWindowsPrincipal=new-object System.Security.Principal.WindowsPrincipal($myWindowsID);")
blockBuffer.WriteString("$adminRole=[System.Security.Principal.WindowsBuiltInRole]::Administrator;")
blockBuffer.WriteString("if($myWindowsPrincipal.IsInRole($adminRole)){return $true}else{return $false}")
blockBuffer.WriteString("}catch{return $false}} foo}")
log.Printf(" blockBuffer: %s", blockBuffer.String())
cmd := exec.Command(d.ExecPath, blockBuffer.String())
cmdOut, err := cmd.Output()
if err != nil {
return err
}
res := strings.TrimSpace(string(cmdOut))
log.Printf("cmdOut: " + string(res))
if res == "False" {
err := fmt.Errorf("%s", "Please restart your shell in elevated mode")
return err
}
return nil
}
func (d *PS4Driver) setExecutionPolicy() error {
log.Printf("Enter method: %s", "setExecutionPolicy")
var blockBuffer bytes.Buffer
blockBuffer.WriteString("Invoke-Command -scriptblock {Set-ExecutionPolicy RemoteSigned -Force}")
err := d.Exec(blockBuffer.String())
return err
}
func (d *PS4Driver) VerifyPSAzureModule() error {
log.Printf("Enter method: %s", "VerifyPSAzureModule")
versionCmd := "Invoke-Command -scriptblock { function foo(){try{ $commands = Get-Command -Module Azure;if($commands.Length -eq 0){return $false} }catch{return $false}; return $true} foo}"
cmd := exec.Command(d.ExecPath, versionCmd)
cmdOut, err := cmd.Output()
if err != nil {
return err
}
res := strings.TrimSpace(string(cmdOut))
if res == "False" {
err := fmt.Errorf("%s", "Azure PowerShell not found. Try this link to install Azure PowerShell: http://go.microsoft.com/?linkid=9811175&clcid=0x409 and restart the shell.")
return err
}
return nil
}
func (d *PS4Driver) Exec(block string) error {
log.Printf("Executing: %#v", block)
var stdout, stderr bytes.Buffer
script := exec.Command(d.ExecPath, block)
script.Stdout = &stdout
script.Stderr = &stderr
err := script.Run()
stderrString := strings.TrimSpace(stderr.String())
if _, ok := err.(*exec.ExitError); ok {
err = fmt.Errorf("Exec error: %s", stderrString)
}
if len(stderrString) > 0 {
err = fmt.Errorf("%s", stderrString)
}
stdoutString := strings.TrimSpace(stdout.String())
log.Printf("Exec stdout: %s", stdoutString)
log.Printf("Exec stderr: %s", stderrString)
return err
}
func (d *PS4Driver) ExecRet(block string) (string, error) {
log.Printf("Executing ExecRet: %#v", block)
var stdout, stderr bytes.Buffer
script := exec.Command(d.ExecPath, block)
script.Stdout = &stdout
script.Stderr = &stderr
err := script.Run()
stderrString := strings.TrimSpace(stderr.String())
if _, ok := err.(*exec.ExitError); ok {
err = fmt.Errorf("ExecRet error: %s", stderrString)
}
if len(stderrString) > 0 {
err = fmt.Errorf("%s", stderrString)
}
stdoutString := strings.TrimSpace(stdout.String())
log.Printf("ExecRet stdout: %s", stdoutString)
log.Printf("ExecRet stderr: %s", stderrString)
return stdoutString, err
}
func (d *PS4Driver) ExecRemote(cmd *packer.RemoteCmd) error {
log.Printf("Executing ExecRemote: %#v", cmd.Command)
script := exec.Command(d.ExecPath, cmd.Command)
script.Stdout = cmd.Stdout
script.Stderr = cmd.Stderr
err := script.Run()
if _, ok := err.(*exec.ExitError); ok {
err = fmt.Errorf("ExecRemote error: %s", err)
}
return err
}