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driver_9.go
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driver_9.go
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package common
import (
"bytes"
"fmt"
"io/ioutil"
"log"
"os"
"os/exec"
"path/filepath"
"regexp"
"strings"
"time"
"github.com/going/toolkit/xmlpath"
)
type Parallels9Driver struct {
// This is the path to the "prlctl" application.
PrlctlPath string
}
func (d *Parallels9Driver) Import(name, srcPath, dstDir string, reassignMac bool) error {
err := d.Prlctl("register", srcPath, "--preserve-uuid")
if err != nil {
return err
}
srcId, err := getVmId(srcPath)
if err != nil {
return err
}
srcMac := "auto"
if !reassignMac {
srcMac, err = getFirtsMacAddress(srcPath)
if err != nil {
return err
}
}
err = d.Prlctl("clone", srcId, "--name", name, "--dst", dstDir)
if err != nil {
return err
}
err = d.Prlctl("unregister", srcId)
if err != nil {
return err
}
err = d.Prlctl("set", name, "--device-set", "net0", "--mac", srcMac)
return nil
}
func getVmId(path string) (string, error) {
return getConfigValueFromXpath(path, "/ParallelsVirtualMachine/Identification/VmUuid")
}
func getFirtsMacAddress(path string) (string, error) {
return getConfigValueFromXpath(path, "/ParallelsVirtualMachine/Hardware/NetworkAdapter[@id='0']/MAC")
}
func getConfigValueFromXpath(path, xpath string) (string, error) {
file, err := os.Open(path + "/config.pvs")
if err != nil {
return "", err
}
xpathComp := xmlpath.MustCompile(xpath)
root, err := xmlpath.Parse(file)
if err != nil {
return "", err
}
value, _ := xpathComp.String(root)
return value, nil
}
// Finds an application bundle by identifier (for "darwin" platform only)
func getAppPath(bundleId string) (string, error) {
var stdout bytes.Buffer
cmd := exec.Command("mdfind", "kMDItemCFBundleIdentifier ==", bundleId)
cmd.Stdout = &stdout
if err := cmd.Run(); err != nil {
return "", err
}
pathOutput := strings.TrimSpace(stdout.String())
if pathOutput == "" {
return "", fmt.Errorf(
"Could not detect Parallels Desktop! Make sure it is properly installed.")
}
return pathOutput, nil
}
func (d *Parallels9Driver) DeviceAddCdRom(name string, image string) (string, error) {
command := []string{
"set", name,
"--device-add", "cdrom",
"--image", image,
}
out, err := exec.Command(d.PrlctlPath, command...).Output()
if err != nil {
return "", err
}
deviceRe := regexp.MustCompile(`\s+(cdrom\d+)\s+`)
matches := deviceRe.FindStringSubmatch(string(out))
if matches == nil {
return "", fmt.Errorf(
"Could not determine cdrom device name in the output:\n%s", string(out))
}
device_name := matches[1]
return device_name, nil
}
func (d *Parallels9Driver) IsRunning(name string) (bool, error) {
var stdout bytes.Buffer
cmd := exec.Command(d.PrlctlPath, "list", name, "--no-header", "--output", "status")
cmd.Stdout = &stdout
if err := cmd.Run(); err != nil {
return false, err
}
log.Printf("Checking VM state: %s\n", strings.TrimSpace(stdout.String()))
for _, line := range strings.Split(stdout.String(), "\n") {
if line == "running" {
return true, nil
}
if line == "suspended" {
return true, nil
}
if line == "paused" {
return true, nil
}
if line == "stopping" {
return true, nil
}
}
return false, nil
}
func (d *Parallels9Driver) Stop(name string) error {
if err := d.Prlctl("stop", name); err != nil {
return err
}
// We sleep here for a little bit to let the session "unlock"
time.Sleep(2 * time.Second)
return nil
}
func (d *Parallels9Driver) Prlctl(args ...string) error {
var stdout, stderr bytes.Buffer
log.Printf("Executing prlctl: %#v", args)
cmd := exec.Command(d.PrlctlPath, args...)
cmd.Stdout = &stdout
cmd.Stderr = &stderr
err := cmd.Run()
stdoutString := strings.TrimSpace(stdout.String())
stderrString := strings.TrimSpace(stderr.String())
if _, ok := err.(*exec.ExitError); ok {
err = fmt.Errorf("prlctl error: %s", stderrString)
}
log.Printf("stdout: %s", stdoutString)
log.Printf("stderr: %s", stderrString)
return err
}
func (d *Parallels9Driver) Verify() error {
return nil
}
func (d *Parallels9Driver) Version() (string, error) {
out, err := exec.Command(d.PrlctlPath, "--version").Output()
if err != nil {
return "", err
}
versionRe := regexp.MustCompile(`prlctl version (\d+\.\d+.\d+)`)
matches := versionRe.FindStringSubmatch(string(out))
if matches == nil {
return "", fmt.Errorf(
"Could not find Parallels Desktop version in output:\n%s", string(out))
}
version := matches[1]
log.Printf("Parallels Desktop version: %s", version)
return version, nil
}
func (d *Parallels9Driver) SendKeyScanCodes(vmName string, codes ...string) error {
var stdout, stderr bytes.Buffer
if codes == nil || len(codes) == 0 {
log.Printf("No scan codes to send")
return nil
}
f, err := ioutil.TempFile("", "prltype")
if err != nil {
return err
}
defer os.Remove(f.Name())
script := []byte(Prltype)
_, err = f.Write(script)
if err != nil {
return err
}
args := prepend(vmName, codes)
args = prepend(f.Name(), args)
cmd := exec.Command("/usr/bin/python", args...)
cmd.Stdout = &stdout
cmd.Stderr = &stderr
err = cmd.Run()
stdoutString := strings.TrimSpace(stdout.String())
stderrString := strings.TrimSpace(stderr.String())
if _, ok := err.(*exec.ExitError); ok {
err = fmt.Errorf("prltype error: %s", stderrString)
}
log.Printf("stdout: %s", stdoutString)
log.Printf("stderr: %s", stderrString)
return err
}
func prepend(head string, tail []string) []string {
tmp := make([]string, len(tail)+1)
for i := 0; i < len(tail); i++ {
tmp[i+1] = tail[i]
}
tmp[0] = head
return tmp
}
func (d *Parallels9Driver) Mac(vmName string) (string, error) {
var stdout bytes.Buffer
cmd := exec.Command(d.PrlctlPath, "list", "-i", vmName)
cmd.Stdout = &stdout
if err := cmd.Run(); err != nil {
log.Printf("MAC address for NIC: nic0 on Virtual Machine: %s not found!\n", vmName)
return "", err
}
stdoutString := strings.TrimSpace(stdout.String())
re := regexp.MustCompile("net0.* mac=([0-9A-F]{12}) card=.*")
macMatch := re.FindAllStringSubmatch(stdoutString, 1)
if len(macMatch) != 1 {
return "", fmt.Errorf("MAC address for NIC: nic0 on Virtual Machine: %s not found!\n", vmName)
}
mac := macMatch[0][1]
log.Printf("Found MAC address for NIC: net0 - %s\n", mac)
return mac, nil
}
// Finds the IP address of a VM connected that uses DHCP by its MAC address
func (d *Parallels9Driver) IpAddress(mac string) (string, error) {
var stdout bytes.Buffer
dhcp_lease_file := "/Library/Preferences/Parallels/parallels_dhcp_leases"
if len(mac) != 12 {
return "", fmt.Errorf("Not a valid MAC address: %s. It should be exactly 12 digits.", mac)
}
cmd := exec.Command("grep", "-i", mac, dhcp_lease_file)
cmd.Stdout = &stdout
if err := cmd.Run(); err != nil {
return "", err
}
stdoutString := strings.TrimSpace(stdout.String())
re := regexp.MustCompile("(.*)=.*")
ipMatch := re.FindAllStringSubmatch(stdoutString, 1)
if len(ipMatch) != 1 {
return "", fmt.Errorf("IP lease not found for MAC address %s in: %s\n", mac, dhcp_lease_file)
}
ip := ipMatch[0][1]
log.Printf("Found IP lease: %s for MAC address %s\n", ip, mac)
return ip, nil
}
func (d *Parallels9Driver) ToolsIsoPath(k string) (string, error) {
appPath, err := getAppPath("com.parallels.desktop.console")
if err != nil {
return "", err
}
toolsPath := filepath.Join(appPath, "Contents", "Resources", "Tools", "prl-tools-"+k+".iso")
log.Printf("Parallels Tools path: '%s'", toolsPath)
return toolsPath, nil
}