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userBackend.go
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userBackend.go
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package validation
import (
"fmt"
"strconv"
"github.com/cloudogu/k8s-ces-setup/app/context"
)
const (
// DsTypeEmbedded is used to set up the EcoSystem with an embedded user backend (e.g. the ldap dogu).
DsTypeEmbedded = "embedded"
// DsTypeExternal is used to set up the EcoSystem with an external user backend.
DsTypeExternal = "external"
searchFilter = "(objectClass=person)"
)
type userBackendValidator struct {
}
// NewUserBackendValidator creates a new validator for the user backend section of the setup configuration
func NewUserBackendValidator() *userBackendValidator {
return &userBackendValidator{}
}
// ValidateUserBackend validates all properties of the user backend section from a setup json
// see: https://docs.cloudogu.com/docs/system-components/ces-setup/operations/setup-json_de/
func (ubv *userBackendValidator) ValidateUserBackend(backend context.UserBackend) error {
dsType := backend.DsType
if dsType != DsTypeEmbedded && dsType != DsTypeExternal {
return getInvalidOptionError("dsType", DsTypeEmbedded, DsTypeExternal)
}
var result error
if dsType == DsTypeExternal {
result = ubv.validateExternalBackend(backend)
}
if dsType == DsTypeEmbedded {
result = ubv.validateEmbeddedBackend(backend)
}
return result
}
func (ubv *userBackendValidator) validateActiveDirectoryServer(backend context.UserBackend) error {
if backend.AttributeID != "sAMAccountName" {
return getInvalidOptionError("attributeID", "sAMAccountName")
}
if backend.AttributeFullname != "cn" {
return getInvalidOptionError("attributeFullName", "cn")
}
if backend.AttributeMail != "mail" {
return getInvalidOptionError("attributeMail", "mail")
}
if backend.AttributeGroup != "memberOf" {
return getInvalidOptionError("attributeGroup", "memberOf")
}
if backend.SearchFilter != searchFilter {
return getInvalidOptionError("searchFilter", searchFilter)
}
return nil
}
func (ubv *userBackendValidator) validateExternalBackend(backend context.UserBackend) error {
err := ubv.validateBackendLocation(backend)
if err != nil {
return err
}
err = ubv.validateBackendAuth(backend)
if err != nil {
return err
}
err = ubv.validateBackendGroups(backend)
if err != nil {
return err
}
return nil
}
func (ubv *userBackendValidator) validateBackendLocation(backend context.UserBackend) error {
if backend.Server != "activeDirectory" && backend.Server != "custom" {
return getInvalidOptionError("server", "activeDirectory", "custom")
}
if backend.Server == "activeDirectory" {
err := ubv.validateActiveDirectoryServer(backend)
if err != nil {
return err
}
}
if backend.BaseDN == "" {
return getPropertyNotSetError("baseDn")
}
if backend.ConnectionDN == "" {
return getPropertyNotSetError("connectionDn")
}
if backend.Host == "" {
return getPropertyNotSetError("host")
}
if backend.Port == "" {
return getPropertyNotSetError("port")
}
if _, err := strconv.Atoi(backend.Port); err != nil {
return fmt.Errorf("failed to validate property port: the given value is not a number")
}
if backend.Encryption != "none" && backend.Encryption != "ssl" && backend.Encryption != "sslAny" && backend.Encryption != "startTLS" && backend.Encryption != "startTLSAny" {
return getInvalidOptionError("encryption", "none", "ssl", "sslAny", "startTLS", "startTLSAny")
}
return nil
}
func (ubv *userBackendValidator) validateBackendAuth(backend context.UserBackend) error {
if backend.Password == "" {
return getPropertyNotSetError("password")
}
if backend.AttributeGivenName == "" {
return getPropertyNotSetError("attributeGivenName")
}
if backend.AttributeSurname == "" {
return getPropertyNotSetError("attributeSurName")
}
return nil
}
func (ubv *userBackendValidator) validateBackendGroups(backend context.UserBackend) error {
if backend.GroupBaseDN == "" {
return getPropertyNotSetError("groupBaseDN")
}
if backend.GroupSearchFilter == "" {
return getPropertyNotSetError("groupSearchFilter")
}
if backend.GroupAttributeName == "" {
return getPropertyNotSetError("groupAttributeName")
}
if backend.GroupAttributeDescription == "" {
return getPropertyNotSetError("groupAttributeDescription")
}
if backend.GroupAttributeMember == "" {
return getPropertyNotSetError("groupAttributeMember")
}
return nil
}
func (ubv *userBackendValidator) validateEmbeddedBackend(backend context.UserBackend) error {
if backend.AttributeID != "uid" {
return getInvalidOptionError("attributeID", "uid")
}
if backend.AttributeFullname != "cn" {
return getInvalidOptionError("attributeFullName", "cn")
}
if backend.AttributeMail != "mail" {
return getInvalidOptionError("attributeMail", "mail")
}
if backend.AttributeGroup != "memberOf" {
return getInvalidOptionError("attributeGroup", "memberOf")
}
if backend.SearchFilter != searchFilter {
return getInvalidOptionError("searchFilter", searchFilter)
}
if backend.Host != "ldap" {
return getInvalidOptionError("host", "ldap")
}
if backend.Port != "389" {
return getInvalidOptionError("port", "389")
}
return nil
}