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quay/util/config/validators/validate_ldap.py

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2019-11-12 16:09:47 +00:00
import os
import ldap
import subprocess
from data.users import LDAP_CERT_FILENAME
from data.users.externalldap import LDAPConnection, LDAPUsers
from util.config.validators import BaseValidator, ConfigValidationException
class LDAPValidator(BaseValidator):
name = "ldap"
@classmethod
def validate(cls, validator_context):
""" Validates the LDAP connection. """
config = validator_context.config
config_provider = validator_context.config_provider
init_scripts_location = validator_context.init_scripts_location
if config.get('AUTHENTICATION_TYPE', 'Database') != 'LDAP':
return
# If there is a custom LDAP certificate, then reinstall the certificates for the container.
if config_provider.volume_file_exists(LDAP_CERT_FILENAME):
subprocess.check_call([os.path.join(init_scripts_location, 'certs_install.sh')],
env={ 'QUAYCONFIG': config_provider.get_config_dir_path() })
# Note: raises ldap.INVALID_CREDENTIALS on failure
admin_dn = config.get('LDAP_ADMIN_DN')
admin_passwd = config.get('LDAP_ADMIN_PASSWD')
if not admin_dn:
raise ConfigValidationException('Missing Admin DN for LDAP configuration')
if not admin_passwd:
raise ConfigValidationException('Missing Admin Password for LDAP configuration')
ldap_uri = config.get('LDAP_URI', 'ldap://localhost')
if not ldap_uri.startswith('ldap://') and not ldap_uri.startswith('ldaps://'):
raise ConfigValidationException('LDAP URI must start with ldap:// or ldaps://')
allow_tls_fallback = config.get('LDAP_ALLOW_INSECURE_FALLBACK', False)
try:
with LDAPConnection(ldap_uri, admin_dn, admin_passwd, allow_tls_fallback):
pass
except ldap.LDAPError as ex:
values = ex.args[0] if ex.args else {}
if not isinstance(values, dict):
raise ConfigValidationException(str(ex.args))
raise ConfigValidationException(values.get('desc', 'Unknown error'))
base_dn = config.get('LDAP_BASE_DN')
user_rdn = config.get('LDAP_USER_RDN', [])
uid_attr = config.get('LDAP_UID_ATTR', 'uid')
email_attr = config.get('LDAP_EMAIL_ATTR', 'mail')
requires_email = config.get('FEATURE_MAILING', True)
users = LDAPUsers(ldap_uri, base_dn, admin_dn, admin_passwd, user_rdn, uid_attr, email_attr,
allow_tls_fallback, requires_email=requires_email)
# Ensure at least one user exists to verify the connection is setup properly.
(result, err_msg) = users.at_least_one_user_exists()
if not result:
msg = ('Verification that users exist failed: %s. \n\nNo users exist ' +
'in the remote authentication system ' +
'OR LDAP auth is misconfigured.') % err_msg
raise ConfigValidationException(msg)