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refactor for secrets management in API and private key handling in SFTPFs

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Signed-off-by: Nicola Murino <nicola.murino@gmail.com>
This commit is contained in:
Nicola Murino 2024-04-26 16:17:24 +02:00
parent aa426016f2
commit 2bcf05ca45
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GPG key ID: 935D2952DEC4EECF
5 changed files with 47 additions and 70 deletions
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5
internal/httpd/api_folder.go
View file

@ -89,10 +89,7 @@ func updateFolder(w http.ResponseWriter, r *http.Request) {
updatedFolder.ID = folder.ID
updatedFolder.Name = folder.Name
updatedFolder.FsConfig.SetEmptySecretsIfNil()
updateEncryptedSecrets(&updatedFolder.FsConfig, folder.FsConfig.S3Config.AccessSecret, folder.FsConfig.AzBlobConfig.AccountKey,
folder.FsConfig.AzBlobConfig.SASURL, folder.FsConfig.GCSConfig.Credentials, folder.FsConfig.CryptConfig.Passphrase,
folder.FsConfig.SFTPConfig.Password, folder.FsConfig.SFTPConfig.PrivateKey, folder.FsConfig.SFTPConfig.KeyPassphrase,
folder.FsConfig.HTTPConfig.Password, folder.FsConfig.HTTPConfig.APIKey)
updateEncryptedSecrets(&updatedFolder.FsConfig, &folder.FsConfig)
err = dataprovider.UpdateFolder(&updatedFolder, folder.Users, folder.Groups, claims.Username,
util.GetIPFromRemoteAddress(r.RemoteAddr), claims.Role)

15
internal/httpd/api_group.go
View file

@ -79,17 +79,6 @@ func updateGroup(w http.ResponseWriter, r *http.Request) {
return
}
currentS3AccessSecret := group.UserSettings.FsConfig.S3Config.AccessSecret
currentAzAccountKey := group.UserSettings.FsConfig.AzBlobConfig.AccountKey
currentAzSASUrl := group.UserSettings.FsConfig.AzBlobConfig.SASURL
currentGCSCredentials := group.UserSettings.FsConfig.GCSConfig.Credentials
currentCryptoPassphrase := group.UserSettings.FsConfig.CryptConfig.Passphrase
currentSFTPPassword := group.UserSettings.FsConfig.SFTPConfig.Password
currentSFTPKey := group.UserSettings.FsConfig.SFTPConfig.PrivateKey
currentSFTPKeyPassphrase := group.UserSettings.FsConfig.SFTPConfig.KeyPassphrase
currentHTTPPassword := group.UserSettings.FsConfig.HTTPConfig.Password
currentHTTPAPIKey := group.UserSettings.FsConfig.HTTPConfig.APIKey
var updatedGroup dataprovider.Group
err = render.DecodeJSON(r.Body, &updatedGroup)
if err != nil {
@ -99,9 +88,7 @@ func updateGroup(w http.ResponseWriter, r *http.Request) {
updatedGroup.ID = group.ID
updatedGroup.Name = group.Name
updatedGroup.UserSettings.FsConfig.SetEmptySecretsIfNil()
updateEncryptedSecrets(&updatedGroup.UserSettings.FsConfig, currentS3AccessSecret, currentAzAccountKey, currentAzSASUrl,
currentGCSCredentials, currentCryptoPassphrase, currentSFTPPassword, currentSFTPKey, currentSFTPKeyPassphrase,
currentHTTPPassword, currentHTTPAPIKey)
updateEncryptedSecrets(&updatedGroup.UserSettings.FsConfig, &group.UserSettings.FsConfig)
err = dataprovider.UpdateGroup(&updatedGroup, group.Users, claims.Username, util.GetIPFromRemoteAddress(r.RemoteAddr),
claims.Role)
if err != nil {

40
internal/httpd/api_user.go
View file

@ -27,7 +27,6 @@ import (
"github.com/drakkan/sftpgo/v2/internal/common"
"github.com/drakkan/sftpgo/v2/internal/dataprovider"
"github.com/drakkan/sftpgo/v2/internal/kms"
"github.com/drakkan/sftpgo/v2/internal/logger"
"github.com/drakkan/sftpgo/v2/internal/smtp"
"github.com/drakkan/sftpgo/v2/internal/util"
@ -186,10 +185,7 @@ func updateUser(w http.ResponseWriter, r *http.Request) {
updatedUser.Filters.TOTPConfig = user.Filters.TOTPConfig
updatedUser.LastPasswordChange = user.LastPasswordChange
updatedUser.SetEmptySecretsIfNil()
updateEncryptedSecrets(&updatedUser.FsConfig, user.FsConfig.S3Config.AccessSecret, user.FsConfig.AzBlobConfig.AccountKey,
user.FsConfig.AzBlobConfig.SASURL, user.FsConfig.GCSConfig.Credentials, user.FsConfig.CryptConfig.Passphrase,
user.FsConfig.SFTPConfig.Password, user.FsConfig.SFTPConfig.PrivateKey, user.FsConfig.SFTPConfig.KeyPassphrase,
user.FsConfig.HTTPConfig.Password, user.FsConfig.HTTPConfig.APIKey)
updateEncryptedSecrets(&updatedUser.FsConfig, &user.FsConfig)
if claims.Role != "" {
updatedUser.Role = claims.Role
}
@ -275,58 +271,54 @@ func disconnectUser(username, admin, role string) {
}
}
func updateEncryptedSecrets(fsConfig *vfs.Filesystem, currentS3AccessSecret, currentAzAccountKey, currentAzSASUrl,
currentGCSCredentials, currentCryptoPassphrase, currentSFTPPassword, currentSFTPKey, currentSFTPKeyPassphrase,
currentHTTPPassword, currentHTTPAPIKey *kms.Secret) {
func updateEncryptedSecrets(fsConfig *vfs.Filesystem, currentFsConfig *vfs.Filesystem) {
// we use the new access secret if plain or empty, otherwise the old value
switch fsConfig.Provider {
case sdk.S3FilesystemProvider:
if fsConfig.S3Config.AccessSecret.IsNotPlainAndNotEmpty() {
fsConfig.S3Config.AccessSecret = currentS3AccessSecret
fsConfig.S3Config.AccessSecret = currentFsConfig.S3Config.AccessSecret
}
case sdk.AzureBlobFilesystemProvider:
if fsConfig.AzBlobConfig.AccountKey.IsNotPlainAndNotEmpty() {
fsConfig.AzBlobConfig.AccountKey = currentAzAccountKey
fsConfig.AzBlobConfig.AccountKey = currentFsConfig.AzBlobConfig.AccountKey
}
if fsConfig.AzBlobConfig.SASURL.IsNotPlainAndNotEmpty() {
fsConfig.AzBlobConfig.SASURL = currentAzSASUrl
fsConfig.AzBlobConfig.SASURL = currentFsConfig.AzBlobConfig.SASURL
}
case sdk.GCSFilesystemProvider:
// for GCS credentials will be cleared if we enable automatic credentials
// so keep the old credentials here if no new credentials are provided
if !fsConfig.GCSConfig.Credentials.IsPlain() {
fsConfig.GCSConfig.Credentials = currentGCSCredentials
fsConfig.GCSConfig.Credentials = currentFsConfig.GCSConfig.Credentials
}
case sdk.CryptedFilesystemProvider:
if fsConfig.CryptConfig.Passphrase.IsNotPlainAndNotEmpty() {
fsConfig.CryptConfig.Passphrase = currentCryptoPassphrase
fsConfig.CryptConfig.Passphrase = currentFsConfig.CryptConfig.Passphrase
}
case sdk.SFTPFilesystemProvider:
updateSFTPFsEncryptedSecrets(fsConfig, currentSFTPPassword, currentSFTPKey, currentSFTPKeyPassphrase)
updateSFTPFsEncryptedSecrets(fsConfig, currentFsConfig)
case sdk.HTTPFilesystemProvider:
updateHTTPFsEncryptedSecrets(fsConfig, currentHTTPPassword, currentHTTPAPIKey)
updateHTTPFsEncryptedSecrets(fsConfig, currentFsConfig)
}
}
func updateSFTPFsEncryptedSecrets(fsConfig *vfs.Filesystem, currentSFTPPassword, currentSFTPKey,
currentSFTPKeyPassphrase *kms.Secret,
) {
func updateSFTPFsEncryptedSecrets(fsConfig *vfs.Filesystem, currentFsConfig *vfs.Filesystem) {
if fsConfig.SFTPConfig.Password.IsNotPlainAndNotEmpty() {
fsConfig.SFTPConfig.Password = currentSFTPPassword
fsConfig.SFTPConfig.Password = currentFsConfig.SFTPConfig.Password
}
if fsConfig.SFTPConfig.PrivateKey.IsNotPlainAndNotEmpty() {
fsConfig.SFTPConfig.PrivateKey = currentSFTPKey
fsConfig.SFTPConfig.PrivateKey = currentFsConfig.SFTPConfig.PrivateKey
}
if fsConfig.SFTPConfig.KeyPassphrase.IsNotPlainAndNotEmpty() {
fsConfig.SFTPConfig.KeyPassphrase = currentSFTPKeyPassphrase
fsConfig.SFTPConfig.KeyPassphrase = currentFsConfig.SFTPConfig.KeyPassphrase
}
}
func updateHTTPFsEncryptedSecrets(fsConfig *vfs.Filesystem, currentHTTPPassword, currentHTTPAPIKey *kms.Secret) {
func updateHTTPFsEncryptedSecrets(fsConfig *vfs.Filesystem, currentFsConfig *vfs.Filesystem) {
if fsConfig.HTTPConfig.Password.IsNotPlainAndNotEmpty() {
fsConfig.HTTPConfig.Password = currentHTTPPassword
fsConfig.HTTPConfig.Password = currentFsConfig.HTTPConfig.Password
}
if fsConfig.HTTPConfig.APIKey.IsNotPlainAndNotEmpty() {
fsConfig.HTTPConfig.APIKey = currentHTTPAPIKey
fsConfig.HTTPConfig.APIKey = currentFsConfig.HTTPConfig.APIKey
}
}

17
internal/httpd/webadmin.go
View file

@ -3411,10 +3411,7 @@ func (s *httpdServer) handleWebUpdateUserPost(w http.ResponseWriter, r *http.Req
if updatedUser.Password == redactedSecret {
updatedUser.Password = user.Password
}
updateEncryptedSecrets(&updatedUser.FsConfig, user.FsConfig.S3Config.AccessSecret, user.FsConfig.AzBlobConfig.AccountKey,
user.FsConfig.AzBlobConfig.SASURL, user.FsConfig.GCSConfig.Credentials, user.FsConfig.CryptConfig.Passphrase,
user.FsConfig.SFTPConfig.Password, user.FsConfig.SFTPConfig.PrivateKey, user.FsConfig.SFTPConfig.KeyPassphrase,
user.FsConfig.HTTPConfig.Password, user.FsConfig.HTTPConfig.APIKey)
updateEncryptedSecrets(&updatedUser.FsConfig, &user.FsConfig)
updatedUser = getUserFromTemplate(updatedUser, userTemplateFields{
Username: updatedUser.Username,
@ -3556,10 +3553,7 @@ func (s *httpdServer) handleWebUpdateFolderPost(w http.ResponseWriter, r *http.R
updatedFolder.Name = folder.Name
updatedFolder.FsConfig = fsConfig
updatedFolder.FsConfig.SetEmptySecretsIfNil()
updateEncryptedSecrets(&updatedFolder.FsConfig, folder.FsConfig.S3Config.AccessSecret, folder.FsConfig.AzBlobConfig.AccountKey,
folder.FsConfig.AzBlobConfig.SASURL, folder.FsConfig.GCSConfig.Credentials, folder.FsConfig.CryptConfig.Passphrase,
folder.FsConfig.SFTPConfig.Password, folder.FsConfig.SFTPConfig.PrivateKey, folder.FsConfig.SFTPConfig.KeyPassphrase,
folder.FsConfig.HTTPConfig.Password, folder.FsConfig.HTTPConfig.APIKey)
updateEncryptedSecrets(&updatedFolder.FsConfig, &folder.FsConfig)
updatedFolder = getFolderFromTemplate(updatedFolder, updatedFolder.Name)
@ -3720,12 +3714,7 @@ func (s *httpdServer) handleWebUpdateGroupPost(w http.ResponseWriter, r *http.Re
updatedGroup.Name = group.Name
updatedGroup.SetEmptySecretsIfNil()
updateEncryptedSecrets(&updatedGroup.UserSettings.FsConfig, group.UserSettings.FsConfig.S3Config.AccessSecret,
group.UserSettings.FsConfig.AzBlobConfig.AccountKey, group.UserSettings.FsConfig.AzBlobConfig.SASURL,
group.UserSettings.FsConfig.GCSConfig.Credentials, group.UserSettings.FsConfig.CryptConfig.Passphrase,
group.UserSettings.FsConfig.SFTPConfig.Password, group.UserSettings.FsConfig.SFTPConfig.PrivateKey,
group.UserSettings.FsConfig.SFTPConfig.KeyPassphrase, group.UserSettings.FsConfig.HTTPConfig.Password,
group.UserSettings.FsConfig.HTTPConfig.APIKey)
updateEncryptedSecrets(&updatedGroup.UserSettings.FsConfig, &group.UserSettings.FsConfig)
err = dataprovider.UpdateGroup(&updatedGroup, group.Users, claims.Username, ipAddr, claims.Role)
if err != nil {

40
internal/vfs/sftpfs.go
View file

@ -67,6 +67,27 @@ type SFTPFsConfig struct {
PrivateKey *kms.Secret `json:"private_key,omitempty"`
KeyPassphrase *kms.Secret `json:"key_passphrase,omitempty"`
forbiddenSelfUsernames []string `json:"-"`
signer ssh.Signer
}
func (c *SFTPFsConfig) populateSigner() error {
if c.PrivateKey.GetPayload() != "" {
signer, err := c.getSigner()
if err != nil {
return fmt.Errorf("sftpfs: unable to parse the private key: %w", err)
}
c.signer = signer
return nil
}
return nil
}
func (c *SFTPFsConfig) getSigner() (ssh.Signer, error) {
if c.KeyPassphrase.GetPayload() != "" {
return ssh.ParsePrivateKeyWithPassphrase([]byte(c.PrivateKey.GetPayload()),
[]byte(c.KeyPassphrase.GetPayload()))
}
return ssh.ParsePrivateKey([]byte(c.PrivateKey.GetPayload()))
}
// HideConfidentialData hides confidential data
@ -331,6 +352,9 @@ func NewSFTPFs(connectionID, mountPath, localTempDir string, forbiddenSelfUserna
return nil, err
}
}
if err := config.populateSigner(); err != nil {
return nil, err
}
config.forbiddenSelfUsernames = forbiddenSelfUsernames
sftpFs := &SFTPFs{
connectionID: connectionID,
@ -931,14 +955,6 @@ func (c *sftpConnection) OpenConnection() error {
return c.openConnNoLock()
}
func (c *sftpConnection) getSigner() (ssh.Signer, error) {
if c.config.KeyPassphrase.GetPayload() != "" {
return ssh.ParsePrivateKeyWithPassphrase([]byte(c.config.PrivateKey.GetPayload()),
[]byte(c.config.KeyPassphrase.GetPayload()))
}
return ssh.ParsePrivateKey([]byte(c.config.PrivateKey.GetPayload()))
}
func (c *sftpConnection) openConnNoLock() error {
if c.isConnected {
logger.Debug(c.logSender, "", "reusing connection")
@ -976,12 +992,8 @@ func (c *sftpConnection) openConnNoLock() error {
Timeout: 10 * time.Second,
ClientVersion: fmt.Sprintf("SSH-2.0-SFTPGo_%v", version.Get().Version),
}
if c.config.PrivateKey.GetPayload() != "" {
signer, err := c.getSigner()
if err != nil {
return fmt.Errorf("sftpfs: unable to parse the private key: %w", err)
}
clientConfig.Auth = append(clientConfig.Auth, ssh.PublicKeys(signer))
if c.config.signer != nil {
clientConfig.Auth = append(clientConfig.Auth, ssh.PublicKeys(c.config.signer))
}
if c.config.Password.GetPayload() != "" {
clientConfig.Auth = append(clientConfig.Auth, ssh.Password(c.config.Password.GetPayload()))