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windows_platform.go
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windows_platform.go
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package platform
import (
"bytes"
"errors"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"regexp"
"strings"
"syscall"
boshdpresolv "github.com/cloudfoundry/bosh-agent/infrastructure/devicepathresolver"
boshcert "github.com/cloudfoundry/bosh-agent/platform/cert"
boshnet "github.com/cloudfoundry/bosh-agent/platform/net"
boshstats "github.com/cloudfoundry/bosh-agent/platform/stats"
boshvitals "github.com/cloudfoundry/bosh-agent/platform/vitals"
"github.com/cloudfoundry/bosh-agent/platform/windows/disk"
boshsettings "github.com/cloudfoundry/bosh-agent/settings"
boshdir "github.com/cloudfoundry/bosh-agent/settings/directories"
boshdirs "github.com/cloudfoundry/bosh-agent/settings/directories"
bosherr "github.com/cloudfoundry/bosh-utils/errors"
boshcmd "github.com/cloudfoundry/bosh-utils/fileutil"
boshlog "github.com/cloudfoundry/bosh-utils/logger"
boshsys "github.com/cloudfoundry/bosh-utils/system"
boshuuid "github.com/cloudfoundry/bosh-utils/uuid"
)
//go:generate counterfeiter -o fakes/fake_windows_disk_manager.go . WindowsDiskManager
type WindowsDiskManager interface {
GetFormatter() disk.WindowsDiskFormatter
GetLinker() disk.WindowsDiskLinker
GetPartitioner() disk.WindowsDiskPartitioner
GetProtector() disk.WindowsDiskProtector
}
// Administrator user name, this currently exists for testing, but may be useful
// if we ever change the Admin user name for security reasons.
var administratorUserName = "Administrator"
type WindowsOptions struct {
// Feature flag during ephemeral disk support rollout
EnableEphemeralDiskMounting bool
}
type WindowsPlatform struct {
collector boshstats.Collector
fs boshsys.FileSystem
cmdRunner boshsys.CmdRunner
compressor boshcmd.Compressor
copier boshcmd.Copier
dirProvider boshdirs.Provider
vitalsService boshvitals.Service
netManager boshnet.Manager
devicePathResolver boshdpresolv.DevicePathResolver
options Options
certManager boshcert.Manager
defaultNetworkResolver boshsettings.DefaultNetworkResolver
auditLogger AuditLogger
uuidGenerator boshuuid.Generator
diskManager WindowsDiskManager
logger boshlog.Logger
}
func NewWindowsPlatform(
collector boshstats.Collector,
fs boshsys.FileSystem,
cmdRunner boshsys.CmdRunner,
dirProvider boshdirs.Provider,
netManager boshnet.Manager,
certManager boshcert.Manager,
devicePathResolver boshdpresolv.DevicePathResolver,
options Options,
logger boshlog.Logger,
defaultNetworkResolver boshsettings.DefaultNetworkResolver,
auditLogger AuditLogger,
uuidGenerator boshuuid.Generator,
diskManager WindowsDiskManager,
) Platform {
return &WindowsPlatform{
fs: fs,
cmdRunner: cmdRunner,
collector: collector,
compressor: boshcmd.NewTarballCompressor(cmdRunner, fs),
copier: boshcmd.NewGenericCpCopier(fs, logger),
dirProvider: dirProvider,
netManager: netManager,
devicePathResolver: devicePathResolver,
vitalsService: boshvitals.NewService(collector, dirProvider),
certManager: certManager,
options: options,
defaultNetworkResolver: defaultNetworkResolver,
auditLogger: auditLogger,
uuidGenerator: uuidGenerator,
diskManager: diskManager,
logger: logger,
}
}
func (p WindowsPlatform) AssociateDisk(name string, settings boshsettings.DiskSettings) error {
return errors.New("unimplemented")
}
func (p WindowsPlatform) GetFs() (fs boshsys.FileSystem) {
return p.fs
}
func (p WindowsPlatform) GetRunner() (runner boshsys.CmdRunner) {
return p.cmdRunner
}
func (p WindowsPlatform) GetCompressor() (compressor boshcmd.Compressor) {
return p.compressor
}
func (p WindowsPlatform) GetCopier() (copier boshcmd.Copier) {
return p.copier
}
func (p WindowsPlatform) GetDirProvider() (dirProvider boshdir.Provider) {
return p.dirProvider
}
func (p WindowsPlatform) GetVitalsService() (service boshvitals.Service) {
return p.vitalsService
}
func (p WindowsPlatform) GetDevicePathResolver() (devicePathResolver boshdpresolv.DevicePathResolver) {
return p.devicePathResolver
}
func (p WindowsPlatform) GetAuditLogger() AuditLogger {
return p.auditLogger
}
func (p WindowsPlatform) SetupRuntimeConfiguration() error {
return setupRuntimeConfiguration()
}
func (p WindowsPlatform) CreateUser(username, _ string) error {
if err := createUserProfile(username); err != nil {
return bosherr.WrapError(err, "CreateUser: creating user")
}
return nil
}
func (p WindowsPlatform) AddUserToGroups(username string, groups []string) (err error) {
return
}
func (p WindowsPlatform) findEphemeralUsersMatching(reg *regexp.Regexp) ([]string, error) {
users, err := localAccountNames()
if err != nil {
return nil, bosherr.WrapError(err, "Getting list of users")
}
var matchingUsers []string
for _, user := range users {
if !strings.HasPrefix(user, boshsettings.EphemeralUserPrefix) {
continue
}
if reg.MatchString(user) {
matchingUsers = append(matchingUsers, user)
}
}
return matchingUsers, nil
}
const (
OsErrorFileInUse = syscall.Errno(0x20)
OsErrorFileNotFound2 = syscall.Errno(0x2)
OsErrorFileNotFound3 = syscall.Errno(0x3)
)
func deleteFolderAndContents(path string) error {
inf, err := statAndIgnoreFileNotFound(path)
if err != nil {
return err
}
if inf == nil {
return nil
}
err = os.Chmod(path, 0600)
if err != nil {
return err
}
if inf.IsDir() {
childItems, _ := ioutil.ReadDir(path)
for _, item := range childItems {
err = deleteFolderAndContents(filepath.Join(path, item.Name()))
if err != nil {
return err
}
}
}
return removeAndIgnoreProcessFileLocks(path)
}
func removeAndIgnoreProcessFileLocks(path string) error {
err := os.RemoveAll(path)
if err != nil {
pathError, ok := err.(*os.PathError)
if !ok {
fmt.Printf("in RaI after PE")
return err
}
if pathError.Err != OsErrorFileInUse {
fmt.Printf("after FiU check")
return err
}
}
return nil
}
func statAndIgnoreFileNotFound(path string) (os.FileInfo, error) {
inf, err := os.Stat(path)
if err != nil {
pathError, ok := err.(*os.PathError)
if !ok {
return inf, err
}
if pathError.Err != OsErrorFileNotFound2 && pathError.Err != OsErrorFileNotFound3 {
return inf, err
}
}
return inf, nil
}
func (p WindowsPlatform) DeleteEphemeralUsersMatching(pattern string) error {
reg, err := regexp.Compile(pattern)
if err != nil {
return bosherr.WrapError(err, "Compiling regexp")
}
users, err := p.findEphemeralUsersMatching(reg)
if err != nil {
return bosherr.WrapError(err, "Finding ephemeral users")
}
for _, user := range users {
err = deleteFolderAndContents(fmt.Sprintf(`C:\Users\%s`, user))
if err != nil {
return err
}
if err := deleteLocalUser(user); err != nil {
return err
}
}
return nil
}
func (p WindowsPlatform) SetupRootDisk(ephemeralDiskPath string) (err error) {
return
}
func (p WindowsPlatform) SetupCanRestartDir() error {
return nil
}
func (p WindowsPlatform) SetupBoshSettingsDisk() error {
return nil
}
func (p WindowsPlatform) GetAgentSettingsPath(tmpfs bool) string {
if tmpfs {
p.logger.Info("WindowsPlatform", "Windows does not support using tmpfs, using default agent settings path")
}
return filepath.Join(p.dirProvider.BoshDir(), "settings.json")
}
func (p WindowsPlatform) GetPersistentDiskSettingsPath(tmpfs bool) string {
if tmpfs {
p.logger.Info("WindowsPlatform", "Windows does not support using tmpfs, using default persistent disk settings path")
}
return filepath.Join(p.dirProvider.BoshDir(), "persistent_disk_hints.json")
}
func (p WindowsPlatform) SetupSSH(publicKey []string, username string) error {
if username == boshsettings.VCAPUsername {
if !userExists(username) {
err := p.CreateUser(username, "")
if err != nil {
return bosherr.WrapErrorf(err, "Creating user: %s", username)
}
}
}
homedir, err := userHomeDirectory(username)
if err != nil {
return bosherr.WrapErrorf(err, "Finding home directory for user: %s", username)
}
sshdir := filepath.Join(homedir, ".ssh")
if err := p.fs.MkdirAll(sshdir, sshDirPermissions); err != nil {
return bosherr.WrapError(err, "Creating .ssh directory")
}
authkeysPath := filepath.Join(sshdir, "authorized_keys")
publicKeyString := strings.Join(publicKey, "\n")
if err := p.fs.WriteFileString(authkeysPath, publicKeyString); err != nil {
return bosherr.WrapErrorf(err, "Creating authorized_keys file: %s", authkeysPath)
}
return nil
}
func (p WindowsPlatform) SetUserPassword(user, encryptedPwd string) (err error) {
if user == boshsettings.VCAPUsername || user == boshsettings.RootUsername {
//
// Only randomize the password once. Otherwise the password will be
// changed every time the agent restarts - breaking jobs/addons that
// set the Administrator password.
//
if boshnet.LockFileExistsForRandomizedPasswords(p.fs, p.dirProvider) {
return nil
}
if err := setRandomPassword(administratorUserName); err != nil {
return bosherr.WrapError(err, "Randomized Administrator password")
}
if err := boshnet.WriteLockFileForRandomizedPasswords(p.fs, p.dirProvider); err != nil {
return bosherr.WrapError(err, "Could not set user password")
}
}
return
}
func (p WindowsPlatform) SaveDNSRecords(dnsRecords boshsettings.DNSRecords, hostname string) (err error) {
windir := os.Getenv("windir")
if windir == "" {
return bosherr.Error("SaveDNSRecords: missing %WINDIR% env variable")
}
etcdir := filepath.Join(windir, "System32", "Drivers", "etc")
if err := p.fs.MkdirAll(etcdir, 0755); err != nil {
return bosherr.WrapError(err, "SaveDNSRecords: creating etc directory")
}
uuid, err := p.uuidGenerator.Generate()
if err != nil {
return bosherr.WrapError(err, "SaveDNSRecords: generating UUID")
}
tmpfile := filepath.Join(etcdir, "hosts-"+uuid)
f, err := p.fs.OpenFile(tmpfile, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0644)
if err != nil {
return bosherr.WrapError(err, "SaveDNSRecords: opening hosts file")
}
var buf bytes.Buffer
for _, rec := range dnsRecords.Records {
fmt.Fprintf(&buf, "%s %s\n", rec[0], rec[1])
}
if _, err := buf.WriteTo(f); err != nil {
f.Close()
return bosherr.WrapErrorf(err, "SaveDNSRecords: writing DNS records to: %s", tmpfile)
}
f.Close() // Explicitly close before renaming - required to release handle
hostfile := filepath.Join(etcdir, "hosts")
if err := p.fs.Rename(tmpfile, hostfile); err != nil {
return bosherr.WrapErrorf(err, "SaveDNSRecords: renaming %s to %s", tmpfile, hostfile)
}
return
}
func (p WindowsPlatform) SetupIPv6(config boshsettings.IPv6) error {
return nil
}
func (p WindowsPlatform) SetupHostname(hostname string) (err error) {
return
}
func (p WindowsPlatform) SetupNetworking(networks boshsettings.Networks) (err error) {
return p.netManager.SetupNetworking(networks, nil)
}
func (p WindowsPlatform) GetConfiguredNetworkInterfaces() (interfaces []string, err error) {
return p.netManager.GetConfiguredNetworkInterfaces()
}
func (p WindowsPlatform) GetCertManager() (certManager boshcert.Manager) {
return p.certManager
}
func (p WindowsPlatform) SetupLogrotate(groupName, basePath, size string) (err error) {
return
}
func (p WindowsPlatform) SetTimeWithNtpServers(servers []string) (err error) {
if len(servers) == 0 {
return
}
var (
stderr string
)
ntpServers := strings.Join(servers, " ")
_, stderr, _, err = p.cmdRunner.RunCommand("powershell.exe",
"new-netfirewallrule",
"-displayname", "NTP",
"-direction", "outbound",
"-action", "allow",
"-protocol", "udp",
"-RemotePort", "123")
if err != nil {
err = bosherr.WrapErrorf(err, "SetTimeWithNtpServers %s", stderr)
return
}
_, _, _, _ = p.cmdRunner.RunCommand("net", "stop", "w32time")
manualPeerList := fmt.Sprintf("/manualpeerlist:\"%s\"", ntpServers)
_, stderr, _, err = p.cmdRunner.RunCommand(
"powershell.exe",
"w32tm",
"/config",
"/syncfromflags:manual",
manualPeerList)
if err != nil {
err = bosherr.WrapErrorf(err, "SetTimeWithNtpServers %s", stderr)
return
}
_, _, _, _ = p.cmdRunner.RunCommand("net", "start", "w32time")
_, stderr, _, err = p.cmdRunner.RunCommand("w32tm", "/config", "/update")
if err != nil {
err = bosherr.WrapErrorf(err, "SetTimeWithNtpServers %s", stderr)
return
}
_, stderr, _, err = p.cmdRunner.RunCommand("w32tm", "/resync", "/rediscover")
if err != nil {
err = bosherr.WrapErrorf(err, "SetTimeWithNtpServers %s", stderr)
return
}
return
}
func (p WindowsPlatform) SetupEphemeralDiskWithPath(devicePath string, desiredSwapSizeInBytes *uint64, labelPrefix string) error {
const minimumDiskSizeToPartition = 1024 * 1024
if devicePath == "" || !p.options.Windows.EnableEphemeralDiskMounting {
p.logger.Debug("WindowsPlatform", "Not attempting to mount ephemeral disk with devicePath `%s`", devicePath)
return nil
}
dataPath := fmt.Sprintf(`C:%s\`, p.dirProvider.DataDir())
protector := p.diskManager.GetProtector()
if !protector.CommandExists() {
return fmt.Errorf("cannot protect %s. %s cmd does not exist.", dataPath, disk.ProtectCmdlet)
}
partitioner := p.diskManager.GetPartitioner()
if devicePath != "0" {
existingPartitionCount, err := partitioner.GetCountOnDisk(devicePath)
if err != nil {
return err
}
if existingPartitionCount == "0" {
err = partitioner.InitializeDisk(devicePath)
if err != nil {
return err
}
}
}
linker := p.diskManager.GetLinker()
existingTarget, err := linker.LinkTarget(dataPath)
if err != nil {
return err
}
if existingTarget != "" {
return nil
}
freeSpace, err := partitioner.GetFreeSpaceOnDisk(devicePath)
if err != nil {
return err
}
if freeSpace < minimumDiskSizeToPartition {
p.logger.Warn(
"WindowsPlatform",
"Unable to create ephemeral partition on disk %s, as there isn't enough free space",
devicePath,
)
return nil
}
partitionNumber, err := partitioner.PartitionDisk(devicePath)
if err != nil {
return err
}
formatter := p.diskManager.GetFormatter()
err = formatter.Format(devicePath, partitionNumber)
if err != nil {
return err
}
driveLetter, err := partitioner.AssignDriveLetter(devicePath, partitionNumber)
if err != nil {
return err
}
err = linker.Link(dataPath, fmt.Sprintf("%s:", driveLetter))
if err != nil {
return err
}
err = protector.ProtectPath(dataPath)
if err != nil {
return err
}
return nil
}
func (p WindowsPlatform) SetupRawEphemeralDisks(devices []boshsettings.DiskSettings) (err error) {
return
}
func (p WindowsPlatform) SetupDataDir(_ boshsettings.JobDir) error {
dataDir := p.dirProvider.DataDir()
sysDataDir := filepath.Join(dataDir, "sys")
logDir := filepath.Join(sysDataDir, "log")
if err := p.fs.MkdirAll(logDir, logDirPermissions); err != nil {
return bosherr.WrapErrorf(err, "Making %s dir", logDir)
}
sysDir := filepath.Join(p.dirProvider.BaseDir(), "sys")
if !p.fs.FileExists(sysDir) {
if err := p.fs.Symlink(sysDataDir, sysDir); err != nil {
return bosherr.WrapErrorf(err, "Symlinking '%s' to '%s'", sysDir, sysDataDir)
}
}
return nil
}
func (p WindowsPlatform) SetupHomeDir() error {
return nil
}
func (p WindowsPlatform) SetupSharedMemory() error {
return nil
}
func (p WindowsPlatform) SetupTmpDir() error {
boshTmpDir := p.dirProvider.TmpDir()
err := p.fs.MkdirAll(boshTmpDir, tmpDirPermissions)
if err != nil {
return bosherr.WrapError(err, "Creating temp dir")
}
err = os.Setenv("TMP", boshTmpDir)
if err != nil {
return bosherr.WrapError(err, "Setting TMP")
}
err = os.Setenv("TEMP", boshTmpDir)
if err != nil {
return bosherr.WrapError(err, "Setting TEMP")
}
return nil
}
func (p WindowsPlatform) SetupLogDir() error {
return nil
}
func (p WindowsPlatform) SetupBlobsDir() error {
blobsDirPath := p.dirProvider.BlobsDir()
err := p.fs.MkdirAll(blobsDirPath, blobsDirPermissions)
if err != nil {
return bosherr.WrapError(err, "Creating blobs dir")
}
return nil
}
func (p WindowsPlatform) SetupLoggingAndAuditing() error {
return nil
}
func (p WindowsPlatform) MountPersistentDisk(diskSettings boshsettings.DiskSettings, mountPoint string) (err error) {
return
}
func (p WindowsPlatform) UnmountPersistentDisk(diskSettings boshsettings.DiskSettings) (didUnmount bool, err error) {
return
}
func (p WindowsPlatform) GetEphemeralDiskPath(diskSettings boshsettings.DiskSettings) (diskPath string) {
p.logger.Debug("WindowsPlatform", "Identifying ephemeral disk path, diskSettings.Path: `%s`", diskSettings.Path)
if diskSettings.Path == "" && p.options.Linux.CreatePartitionIfNoEphemeralDisk {
diskPath = "0"
}
if diskSettings.Path != "" {
matchInt, _ := regexp.MatchString(`\d`, diskSettings.Path)
if matchInt {
diskPath = diskSettings.Path
} else {
alphs := []byte("abcdefghijklmnopq")
lastChar := diskSettings.Path[len(diskSettings.Path)-1:]
diskPath = fmt.Sprintf("%d", bytes.IndexByte(alphs, byte(lastChar[0])))
}
}
p.logger.Debug("WindowsPlatform", "Identified Disk Path as `%s`", diskPath)
return diskPath
}
func (p WindowsPlatform) GetFileContentsFromCDROM(filePath string) (contents []byte, err error) {
return p.fs.ReadFile("D:/" + filePath)
}
func (p WindowsPlatform) GetFilesContentsFromDisk(diskPath string, fileNames []string) (contents [][]byte, err error) {
return
}
func (p WindowsPlatform) MigratePersistentDisk(fromMountPoint, toMountPoint string) (err error) {
return
}
func (p WindowsPlatform) IsMountPoint(path string) (string, bool, error) {
return "", true, nil
}
func (p WindowsPlatform) IsPersistentDiskMounted(diskSettings boshsettings.DiskSettings) (bool, error) {
return true, nil
}
func (p WindowsPlatform) IsPersistentDiskMountable(diskSettings boshsettings.DiskSettings) (bool, error) {
return true, nil
}
func (p WindowsPlatform) StartMonit() (err error) {
return
}
func (p WindowsPlatform) SetupMonitUser() (err error) {
return
}
func (p WindowsPlatform) GetMonitCredentials() (username, password string, err error) {
return
}
func (p WindowsPlatform) PrepareForNetworkingChange() error {
return nil
}
func (p WindowsPlatform) CleanIPMacAddressCache(ip string) error {
return nil
}
func (p WindowsPlatform) RemoveDevTools(packageFileListPath string) error {
return nil
}
func (p WindowsPlatform) RemoveStaticLibraries(packageFileListPath string) error {
return nil
}
func (p WindowsPlatform) GetDefaultNetwork() (boshsettings.Network, error) {
return p.defaultNetworkResolver.GetDefaultNetwork()
}
func (p WindowsPlatform) GetHostPublicKey() (string, error) {
if err := sshEnabled(); err != nil {
return "", bosherr.WrapError(err, "OpenSSH is not running")
}
drive := os.Getenv("SYSTEMDRIVE")
if drive == "" {
drive = "C:"
}
drive += "\\"
sshdir := filepath.Join(drive, "ProgramData", "ssh")
keypath := filepath.Join(sshdir, "ssh_host_rsa_key.pub")
key, err := p.fs.ReadFileString(keypath)
if err != nil {
// Provide a useful error message.
//
// Do this here otherwise the FakeFileSystem we use for tests
// incorrectly complains that the directories we created don't
// exist.
//
if _, err := p.fs.Stat(sshdir); os.IsNotExist(err) {
return "", bosherr.WrapErrorf(err, "Reading host public key: "+
"expected OpenSSH to be installed at: %s", sshdir)
}
return "", bosherr.WrapErrorf(err, "Missing host public RSA key: %s", keypath)
}
return key, nil
}
func (p WindowsPlatform) DeleteARPEntryWithIP(ip string) error {
_, _, _, err := p.cmdRunner.RunCommand("arp", "-d", ip)
if err != nil {
return bosherr.WrapError(err, "Deleting arp entry")
}
return nil
}
func (p WindowsPlatform) SetupRecordsJSONPermission(path string) error {
return nil
}
func (p WindowsPlatform) Shutdown() error {
return nil
}