U 4JeND@sdZddlZddlZddlZddlmZddlmZmZm Z ddl m Z m Z ddl m Z z ddlZWn,ek rdZejdkre d dYnXzddlZddlZWnek rdZdZYnXd d lmZejdkrd nd ZGdd d eZGdd d eZdS)zKerberos Authentication Plugin.N)Path)AnyOptionalTuple)InterfaceErrorProgrammingError)loggerntzwModule gssapi is required for GSSAPI authentication mechanism but was not found. Unable to authenticate with the server)BaseAuthPluginMySQLSSPIKerberosAuthPluginMySQLKerberosAuthPluginc@seZdZUdZdZeed<dZeed<dZ e e j ed<e edd d Ze edd d Zee jjjd ddZe eeeefdddZde ee edddZe eee eefdddZeedddZdS)rz3Implement the MySQL Kerberos authentication plugin.authentication_kerberos_client plugin_nameF requires_sslNcontext)returncCsbz:tjdd}t|j}|ddkr6|dd\}}|WStjjjk r\t YSXdS)z(Get user from credentials without realm.initiateusage@r N) gssapi CredentialsstrnamefindsplitrawmiscGSSErrorgetpassgetuser)credsuser_r'Z/tmp/pip-unpacked-wheel-7_167w8m/mysql/connector/plugins/authentication_kerberos_client.pyget_user_from_credentialsLs  z1MySQLKerberosAuthPlugin.get_user_from_credentialscCs`tjdtjdkr dtn tdd}|s + SPN string + UPN realm string length two bytes + UPN realm string Returns: tuple: With 'spn' and 'realm'. zs<