authelia/internal/configuration/validator/authentication.go

474 lines
20 KiB
Go

package validator
import (
"fmt"
"net/url"
"strings"
"github.com/go-crypt/crypt"
"github.com/authelia/authelia/v4/internal/configuration/schema"
"github.com/authelia/authelia/v4/internal/utils"
)
// ValidateAuthenticationBackend validates and updates the authentication backend configuration.
func ValidateAuthenticationBackend(config *schema.AuthenticationBackend, validator *schema.StructValidator) {
if config.LDAP == nil && config.File == nil {
validator.Push(fmt.Errorf(errFmtAuthBackendNotConfigured))
}
if config.RefreshInterval == "" {
config.RefreshInterval = schema.RefreshIntervalDefault
} else {
_, err := utils.ParseDurationString(config.RefreshInterval)
if err != nil && config.RefreshInterval != schema.ProfileRefreshDisabled && config.RefreshInterval != schema.ProfileRefreshAlways {
validator.Push(fmt.Errorf(errFmtAuthBackendRefreshInterval, config.RefreshInterval, err))
}
}
if config.PasswordReset.CustomURL.String() != "" {
switch config.PasswordReset.CustomURL.Scheme {
case schemeHTTP, schemeHTTPS:
config.PasswordReset.Disable = false
default:
validator.Push(fmt.Errorf(errFmtAuthBackendPasswordResetCustomURLScheme, config.PasswordReset.CustomURL.String(), config.PasswordReset.CustomURL.Scheme))
}
}
if config.LDAP != nil && config.File != nil {
validator.Push(fmt.Errorf(errFmtAuthBackendMultipleConfigured))
}
if config.File != nil {
validateFileAuthenticationBackend(config.File, validator)
}
if config.LDAP != nil {
validateLDAPAuthenticationBackend(config, validator)
}
}
// validateFileAuthenticationBackend validates and updates the file authentication backend configuration.
func validateFileAuthenticationBackend(config *schema.FileAuthenticationBackend, validator *schema.StructValidator) {
if config.Path == "" {
validator.Push(fmt.Errorf(errFmtFileAuthBackendPathNotConfigured))
}
ValidatePasswordConfiguration(&config.Password, validator)
}
// ValidatePasswordConfiguration validates the file auth backend password configuration.
func ValidatePasswordConfiguration(config *schema.Password, validator *schema.StructValidator) {
validateFileAuthenticationBackendPasswordConfigLegacy(config)
switch {
case config.Algorithm == "":
config.Algorithm = schema.DefaultPasswordConfig.Algorithm
case utils.IsStringInSlice(config.Algorithm, validHashAlgorithms):
break
default:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordUnknownAlg, config.Algorithm, strings.Join(validHashAlgorithms, "', '")))
}
validateFileAuthenticationBackendPasswordConfigArgon2(config, validator)
validateFileAuthenticationBackendPasswordConfigSHA2Crypt(config, validator)
validateFileAuthenticationBackendPasswordConfigPBKDF2(config, validator)
validateFileAuthenticationBackendPasswordConfigBCrypt(config, validator)
validateFileAuthenticationBackendPasswordConfigSCrypt(config, validator)
}
//nolint:gocyclo // Function is well formed.
func validateFileAuthenticationBackendPasswordConfigArgon2(config *schema.Password, validator *schema.StructValidator) {
switch {
case config.Argon2.Variant == "":
config.Argon2.Variant = schema.DefaultPasswordConfig.Argon2.Variant
case utils.IsStringInSlice(config.Argon2.Variant, validArgon2Variants):
break
default:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordInvalidVariant, hashArgon2, config.Argon2.Variant, strings.Join(validArgon2Variants, "', '")))
}
switch {
case config.Argon2.Iterations == 0:
config.Argon2.Iterations = schema.DefaultPasswordConfig.Argon2.Iterations
case config.Argon2.Iterations < crypt.Argon2IterationsMin:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashArgon2, "iterations", config.Argon2.Iterations, crypt.Argon2IterationsMin))
case config.Argon2.Iterations > crypt.Argon2IterationsMax:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashArgon2, "iterations", config.Argon2.Iterations, crypt.Argon2IterationsMax))
}
switch {
case config.Argon2.Parallelism == 0:
config.Argon2.Parallelism = schema.DefaultPasswordConfig.Argon2.Parallelism
case config.Argon2.Parallelism < crypt.Argon2ParallelismMin:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashArgon2, "parallelism", config.Argon2.Parallelism, crypt.Argon2ParallelismMin))
case config.Argon2.Parallelism > crypt.Argon2ParallelismMax:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashArgon2, "parallelism", config.Argon2.Parallelism, crypt.Argon2ParallelismMax))
}
switch {
case config.Argon2.Memory == 0:
config.Argon2.Memory = schema.DefaultPasswordConfig.Argon2.Memory
case config.Argon2.Memory < 0:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashArgon2, "memory", config.Argon2.Parallelism, 1))
case config.Argon2.Memory < (crypt.Argon2MemoryMinParallelismMultiplier * config.Argon2.Parallelism):
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordArgon2MemoryTooLow, config.Argon2.Memory, config.Argon2.Parallelism*crypt.Argon2MemoryMinParallelismMultiplier, config.Argon2.Parallelism, crypt.Argon2MemoryMinParallelismMultiplier))
}
switch {
case config.Argon2.KeyLength == 0:
config.Argon2.KeyLength = schema.DefaultPasswordConfig.Argon2.KeyLength
case config.Argon2.KeyLength < crypt.Argon2KeySizeMin:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashArgon2, "key_length", config.Argon2.KeyLength, crypt.Argon2KeySizeMin))
case config.Argon2.KeyLength > crypt.Argon2KeySizeMax:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashArgon2, "key_length", config.Argon2.KeyLength, crypt.Argon2KeySizeMax))
}
switch {
case config.Argon2.SaltLength == 0:
config.Argon2.SaltLength = schema.DefaultPasswordConfig.Argon2.SaltLength
case config.Argon2.SaltLength < crypt.Argon2SaltSizeMin:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashArgon2, "salt_length", config.Argon2.SaltLength, crypt.Argon2SaltSizeMin))
case config.Argon2.SaltLength > crypt.Argon2SaltSizeMax:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashArgon2, "salt_length", config.Argon2.SaltLength, crypt.Argon2SaltSizeMax))
}
}
func validateFileAuthenticationBackendPasswordConfigSHA2Crypt(config *schema.Password, validator *schema.StructValidator) {
switch {
case config.SHA2Crypt.Variant == "":
config.SHA2Crypt.Variant = schema.DefaultPasswordConfig.SHA2Crypt.Variant
case utils.IsStringInSlice(config.SHA2Crypt.Variant, validSHA2CryptVariants):
break
default:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordInvalidVariant, hashSHA2Crypt, config.SHA2Crypt.Variant, strings.Join(validSHA2CryptVariants, "', '")))
}
switch {
case config.SHA2Crypt.Iterations == 0:
config.SHA2Crypt.Iterations = schema.DefaultPasswordConfig.SHA2Crypt.Iterations
case config.SHA2Crypt.Iterations < crypt.SHA2CryptIterationsMin:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashSHA2Crypt, "iterations", config.SHA2Crypt.Iterations, crypt.SHA2CryptIterationsMin))
case config.SHA2Crypt.Iterations > crypt.SHA2CryptIterationsMax:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashSHA2Crypt, "iterations", config.SHA2Crypt.Iterations, crypt.SHA2CryptIterationsMax))
}
switch {
case config.SHA2Crypt.SaltLength == 0:
config.SHA2Crypt.SaltLength = schema.DefaultPasswordConfig.SHA2Crypt.SaltLength
case config.SHA2Crypt.SaltLength < crypt.SHA2CryptSaltSizeMin:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashSHA2Crypt, "salt_length", config.SHA2Crypt.SaltLength, crypt.SHA2CryptSaltSizeMin))
case config.SHA2Crypt.SaltLength > crypt.SHA2CryptSaltSizeMax:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashSHA2Crypt, "salt_length", config.SHA2Crypt.SaltLength, crypt.SHA2CryptSaltSizeMax))
}
}
func validateFileAuthenticationBackendPasswordConfigPBKDF2(config *schema.Password, validator *schema.StructValidator) {
switch {
case config.PBKDF2.Variant == "":
config.PBKDF2.Variant = schema.DefaultPasswordConfig.PBKDF2.Variant
case utils.IsStringInSlice(config.PBKDF2.Variant, validPBKDF2Variants):
break
default:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordInvalidVariant, hashPBKDF2, config.PBKDF2.Variant, strings.Join(validPBKDF2Variants, "', '")))
}
switch {
case config.PBKDF2.Iterations == 0:
config.PBKDF2.Iterations = schema.DefaultPasswordConfig.PBKDF2.Iterations
case config.PBKDF2.Iterations < crypt.PBKDF2IterationsMin:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashPBKDF2, "iterations", config.PBKDF2.Iterations, crypt.PBKDF2IterationsMin))
case config.PBKDF2.Iterations > crypt.PBKDF2IterationsMax:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashPBKDF2, "iterations", config.PBKDF2.Iterations, crypt.PBKDF2IterationsMax))
}
switch {
case config.PBKDF2.SaltLength == 0:
config.PBKDF2.SaltLength = schema.DefaultPasswordConfig.PBKDF2.SaltLength
case config.PBKDF2.SaltLength < crypt.PBKDF2SaltSizeMin:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashPBKDF2, "salt_length", config.PBKDF2.SaltLength, crypt.PBKDF2SaltSizeMin))
case config.PBKDF2.SaltLength > crypt.PBKDF2SaltSizeMax:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashPBKDF2, "salt_length", config.PBKDF2.SaltLength, crypt.PBKDF2SaltSizeMax))
}
}
func validateFileAuthenticationBackendPasswordConfigBCrypt(config *schema.Password, validator *schema.StructValidator) {
switch {
case config.BCrypt.Variant == "":
config.BCrypt.Variant = schema.DefaultPasswordConfig.BCrypt.Variant
case utils.IsStringInSlice(config.BCrypt.Variant, validBCryptVariants):
break
default:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordInvalidVariant, hashBCrypt, config.BCrypt.Variant, strings.Join(validBCryptVariants, "', '")))
}
switch {
case config.BCrypt.Cost == 0:
config.BCrypt.Cost = schema.DefaultPasswordConfig.BCrypt.Cost
case config.BCrypt.Cost < crypt.BcryptCostMin:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashBCrypt, "cost", config.BCrypt.Cost, crypt.BcryptCostMin))
case config.BCrypt.Cost > crypt.BcryptCostMax:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashBCrypt, "cost", config.BCrypt.Cost, crypt.BcryptCostMax))
}
}
func validateFileAuthenticationBackendPasswordConfigSCrypt(config *schema.Password, validator *schema.StructValidator) {
switch {
case config.SCrypt.Iterations == 0:
config.SCrypt.Iterations = schema.DefaultPasswordConfig.SCrypt.Iterations
case config.SCrypt.Iterations < crypt.ScryptIterationsMin:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashSCrypt, "iterations", config.SCrypt.Iterations, crypt.ScryptIterationsMin))
}
switch {
case config.SCrypt.BlockSize == 0:
config.SCrypt.BlockSize = schema.DefaultPasswordConfig.SCrypt.BlockSize
case config.SCrypt.BlockSize < crypt.ScryptBlockSizeMin:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashSCrypt, "block_size", config.SCrypt.BlockSize, crypt.ScryptBlockSizeMin))
case config.SCrypt.BlockSize > crypt.ScryptBlockSizeMax:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashSCrypt, "block_size", config.SCrypt.BlockSize, crypt.ScryptBlockSizeMax))
}
switch {
case config.SCrypt.Parallelism == 0:
config.SCrypt.Parallelism = schema.DefaultPasswordConfig.SCrypt.Parallelism
case config.SCrypt.Parallelism < crypt.ScryptParallelismMin:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashSCrypt, "parallelism", config.SCrypt.Parallelism, crypt.ScryptParallelismMin))
}
switch {
case config.SCrypt.KeyLength == 0:
config.SCrypt.KeyLength = schema.DefaultPasswordConfig.SCrypt.KeyLength
case config.SCrypt.KeyLength < crypt.ScryptKeySizeMin:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashSCrypt, "key_length", config.SCrypt.KeyLength, crypt.ScryptKeySizeMin))
case config.SCrypt.KeyLength > crypt.ScryptKeySizeMax:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashSCrypt, "key_length", config.SCrypt.KeyLength, crypt.ScryptKeySizeMax))
}
switch {
case config.SCrypt.SaltLength == 0:
config.SCrypt.SaltLength = schema.DefaultPasswordConfig.SCrypt.SaltLength
case config.SCrypt.SaltLength < crypt.ScryptSaltSizeMin:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashSCrypt, "salt_length", config.SCrypt.SaltLength, crypt.ScryptSaltSizeMin))
case config.SCrypt.SaltLength > crypt.ScryptSaltSizeMax:
validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashSCrypt, "salt_length", config.SCrypt.SaltLength, crypt.ScryptSaltSizeMax))
}
}
//nolint:gocyclo // Function is clear enough.
func validateFileAuthenticationBackendPasswordConfigLegacy(config *schema.Password) {
switch config.Algorithm {
case hashLegacySHA512:
config.Algorithm = hashSHA2Crypt
if config.SHA2Crypt.Variant == "" {
config.SHA2Crypt.Variant = schema.DefaultPasswordConfig.SHA2Crypt.Variant
}
if config.Iterations > 0 && config.SHA2Crypt.Iterations == 0 {
config.SHA2Crypt.Iterations = config.Iterations
}
if config.SaltLength > 0 && config.SHA2Crypt.SaltLength == 0 {
if config.SaltLength > 16 {
config.SHA2Crypt.SaltLength = 16
} else {
config.SHA2Crypt.SaltLength = config.SaltLength
}
}
case hashLegacyArgon2id:
config.Algorithm = hashArgon2
if config.Argon2.Variant == "" {
config.Argon2.Variant = schema.DefaultPasswordConfig.Argon2.Variant
}
if config.Iterations > 0 && config.Argon2.Memory == 0 {
config.Argon2.Iterations = config.Iterations
}
if config.Memory > 0 && config.Argon2.Memory == 0 {
config.Argon2.Memory = config.Memory * 1024
}
if config.Parallelism > 0 && config.Argon2.Parallelism == 0 {
config.Argon2.Parallelism = config.Parallelism
}
if config.KeyLength > 0 && config.Argon2.KeyLength == 0 {
config.Argon2.KeyLength = config.KeyLength
}
if config.SaltLength > 0 && config.Argon2.SaltLength == 0 {
config.Argon2.SaltLength = config.SaltLength
}
}
}
func validateLDAPAuthenticationBackend(config *schema.AuthenticationBackend, validator *schema.StructValidator) {
if config.LDAP.Implementation == "" {
config.LDAP.Implementation = schema.LDAPImplementationCustom
}
var implementation *schema.LDAPAuthenticationBackend
switch config.LDAP.Implementation {
case schema.LDAPImplementationCustom:
implementation = &schema.DefaultLDAPAuthenticationBackendConfigurationImplementationCustom
case schema.LDAPImplementationActiveDirectory:
implementation = &schema.DefaultLDAPAuthenticationBackendConfigurationImplementationActiveDirectory
default:
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendImplementation, config.LDAP.Implementation, strings.Join([]string{schema.LDAPImplementationCustom, schema.LDAPImplementationActiveDirectory}, "', '")))
}
if implementation != nil {
setDefaultImplementationLDAPAuthenticationBackendProfileMisc(config.LDAP, implementation)
setDefaultImplementationLDAPAuthenticationBackendProfileAttributes(config.LDAP, implementation)
}
if config.LDAP.TLS != nil {
if _, err := utils.TLSStringToTLSConfigVersion(config.LDAP.TLS.MinimumVersion); err != nil {
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendTLSMinVersion, config.LDAP.TLS.MinimumVersion, err))
}
} else {
config.LDAP.TLS = &schema.TLSConfig{}
}
if strings.Contains(config.LDAP.UsersFilter, "{0}") {
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendFilterReplacedPlaceholders, "users_filter", "{0}", "{input}"))
}
if strings.Contains(config.LDAP.GroupsFilter, "{0}") {
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendFilterReplacedPlaceholders, "groups_filter", "{0}", "{input}"))
}
if strings.Contains(config.LDAP.GroupsFilter, "{1}") {
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendFilterReplacedPlaceholders, "groups_filter", "{1}", "{username}"))
}
if config.LDAP.URL == "" {
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendMissingOption, "url"))
} else {
validateLDAPAuthenticationBackendURL(config.LDAP, validator)
}
validateLDAPRequiredParameters(config, validator)
}
func setDefaultImplementationLDAPAuthenticationBackendProfileMisc(config *schema.LDAPAuthenticationBackend, implementation *schema.LDAPAuthenticationBackend) {
if config.Timeout == 0 {
config.Timeout = implementation.Timeout
}
if implementation.TLS == nil {
return
}
if config.TLS == nil {
config.TLS = implementation.TLS
} else if config.TLS.MinimumVersion == "" {
config.TLS.MinimumVersion = implementation.TLS.MinimumVersion
}
}
func ldapImplementationShouldSetStr(config, implementation string) bool {
return config == "" && implementation != ""
}
func setDefaultImplementationLDAPAuthenticationBackendProfileAttributes(config *schema.LDAPAuthenticationBackend, implementation *schema.LDAPAuthenticationBackend) {
if ldapImplementationShouldSetStr(config.UsersFilter, implementation.UsersFilter) {
config.UsersFilter = implementation.UsersFilter
}
if ldapImplementationShouldSetStr(config.UsernameAttribute, implementation.UsernameAttribute) {
config.UsernameAttribute = implementation.UsernameAttribute
}
if ldapImplementationShouldSetStr(config.DisplayNameAttribute, implementation.DisplayNameAttribute) {
config.DisplayNameAttribute = implementation.DisplayNameAttribute
}
if ldapImplementationShouldSetStr(config.MailAttribute, implementation.MailAttribute) {
config.MailAttribute = implementation.MailAttribute
}
if ldapImplementationShouldSetStr(config.GroupsFilter, implementation.GroupsFilter) {
config.GroupsFilter = implementation.GroupsFilter
}
if ldapImplementationShouldSetStr(config.GroupNameAttribute, implementation.GroupNameAttribute) {
config.GroupNameAttribute = implementation.GroupNameAttribute
}
}
func validateLDAPAuthenticationBackendURL(config *schema.LDAPAuthenticationBackend, validator *schema.StructValidator) {
var (
parsedURL *url.URL
err error
)
if parsedURL, err = url.Parse(config.URL); err != nil {
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendURLNotParsable, err))
return
}
if parsedURL.Scheme != schemeLDAP && parsedURL.Scheme != schemeLDAPS {
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendURLInvalidScheme, parsedURL.Scheme))
return
}
config.URL = parsedURL.String()
if config.TLS.ServerName == "" {
config.TLS.ServerName = parsedURL.Hostname()
}
}
func validateLDAPRequiredParameters(config *schema.AuthenticationBackend, validator *schema.StructValidator) {
if config.LDAP.PermitUnauthenticatedBind {
if config.LDAP.Password != "" {
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendUnauthenticatedBindWithPassword))
}
if !config.PasswordReset.Disable {
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendUnauthenticatedBindWithResetEnabled))
}
} else {
if config.LDAP.User == "" {
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendMissingOption, "user"))
}
if config.LDAP.Password == "" {
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendMissingOption, "password"))
}
}
if config.LDAP.BaseDN == "" {
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendMissingOption, "base_dn"))
}
if config.LDAP.UsersFilter == "" {
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendMissingOption, "users_filter"))
} else {
if !strings.HasPrefix(config.LDAP.UsersFilter, "(") || !strings.HasSuffix(config.LDAP.UsersFilter, ")") {
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendFilterEnclosingParenthesis, "users_filter", config.LDAP.UsersFilter, config.LDAP.UsersFilter))
}
if !strings.Contains(config.LDAP.UsersFilter, "{username_attribute}") {
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendFilterMissingPlaceholder, "users_filter", "username_attribute"))
}
// This test helps the user know that users_filter is broken after the breaking change induced by this commit.
if !strings.Contains(config.LDAP.UsersFilter, "{input}") {
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendFilterMissingPlaceholder, "users_filter", "input"))
}
}
if config.LDAP.GroupsFilter == "" {
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendMissingOption, "groups_filter"))
} else if !strings.HasPrefix(config.LDAP.GroupsFilter, "(") || !strings.HasSuffix(config.LDAP.GroupsFilter, ")") {
validator.Push(fmt.Errorf(errFmtLDAPAuthBackendFilterEnclosingParenthesis, "groups_filter", config.LDAP.GroupsFilter, config.LDAP.GroupsFilter))
}
}