mech

type Factory ¶

type Factory func(h callback.Handler) (Interface, StepFunc, error)

return a mechanism and it's initialization step (may be a noop that returns a nil data blob and handle to the first "real" challenge step).

func SelectSupported(mechanisms []string) (selectedMech string, factory Factory)

type Interface ¶

type Interface interface {
	Handler() callback.Handler
	Discard() // clean up resources or sensitive information; idempotent
}

type StepFunc ¶

type StepFunc func(m Interface, data []byte) (StepFunc, []byte, error)

StepFunc implementations should never return a nil StepFunc result. This helps keep the logic in the SASL authticatee simpler: step functions are never nil. Mechanisms that end up an error state (for example, some decoding logic fails...) should return a StepFunc that represents an error state. Some mechanisms may be able to recover from such.

func IllegalState(m Interface, data []byte) (StepFunc, []byte, error)