sasl

package
v0.0.195 Latest Latest
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 Go to latest Published: Jun 17, 2026 License: Apache-2.0 Imports: 1 Imported by: 0

Documentation

Overview

Package sasl provides SASL authentication mechanism selection and parsing utilities.

Index

Constants

This section is empty.

Variables

View Source 
var MechanismPrecedence = []Mechanism{
	MechanismGSSAPI,
	MechanismXOAuth2,
	MechanismCramMD5,
	MechanismPlain,
	MechanismLogin,
}

MechanismPrecedence lists mechanisms from strongest to weakest for auto-selection.

Functions

This section is empty.

Types

type Mechanism 

type Mechanism string

Mechanism represents a SASL authentication mechanism. 

const (
	MechanismPlain   Mechanism = "PLAIN"
	MechanismLogin   Mechanism = "LOGIN"
	MechanismCramMD5 Mechanism = "CRAM-MD5"
	MechanismGSSAPI  Mechanism = "GSSAPI"
	MechanismXOAuth2 Mechanism = "XOAUTH2"
)

func ParseMechanisms 

func ParseMechanisms(capabilities []string) []Mechanism

ParseMechanisms parses the SASL mechanisms from an IMAP CAPABILITY response. It looks for capability tokens of the form "AUTH=<MECHANISM>" (case-insensitive, per RFC 3501 §2.6 which states capability names are not case-sensitive).

func SelectStrongest 

func SelectStrongest(available []Mechanism, allowPlain bool) (Mechanism, bool)

SelectStrongest returns the strongest available mechanism from the advertised list, filtered by allowPlain (if false, PLAIN and LOGIN are excluded unless no other option).

Source Files

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