forked from mirrors/gotosocial
98263a7de6
* start fixing up tests * fix up tests + automate with drone * fiddle with linting * messing about with drone.yml * some more fiddling * hmmm * add cache * add vendor directory * verbose * ci updates * update some little things * update sig
58 lines
2.3 KiB
Go
58 lines
2.3 KiB
Go
// Copyright 2016 The Mellium Contributors.
|
|
// Use of this source code is governed by the BSD 2-clause license that can be
|
|
// found in the LICENSE file.
|
|
|
|
package sasl
|
|
|
|
import (
|
|
"crypto/sha1"
|
|
"crypto/sha256"
|
|
"errors"
|
|
)
|
|
|
|
// Define common errors used by SASL mechanisms and negotiators.
|
|
var (
|
|
ErrInvalidState = errors.New("Invalid state")
|
|
ErrInvalidChallenge = errors.New("Invalid or missing challenge")
|
|
ErrAuthn = errors.New("Authentication error")
|
|
ErrTooManySteps = errors.New("Step called too many times")
|
|
)
|
|
|
|
var (
|
|
// Plain is a Mechanism that implements the PLAIN authentication mechanism
|
|
// as defined by RFC 4616.
|
|
Plain Mechanism = plain
|
|
|
|
// ScramSha256Plus is a Mechanism that implements the SCRAM-SHA-256-PLUS
|
|
// authentication mechanism defined in RFC 7677. The only supported channel
|
|
// binding type is tls-unique as defined in RFC 5929.
|
|
ScramSha256Plus Mechanism = scram("SCRAM-SHA-256-PLUS", sha256.New)
|
|
|
|
// ScramSha256 is a Mechanism that implements the SCRAM-SHA-256
|
|
// authentication mechanism defined in RFC 7677.
|
|
ScramSha256 Mechanism = scram("SCRAM-SHA-256", sha256.New)
|
|
|
|
// ScramSha1Plus is a Mechanism that implements the SCRAM-SHA-1-PLUS
|
|
// authentication mechanism defined in RFC 5802. The only supported channel
|
|
// binding type is tls-unique as defined in RFC 5929.
|
|
ScramSha1Plus Mechanism = scram("SCRAM-SHA-1-PLUS", sha1.New)
|
|
|
|
// ScramSha1 is a Mechanism that implements the SCRAM-SHA-1 authentication
|
|
// mechanism defined in RFC 5802.
|
|
ScramSha1 Mechanism = scram("SCRAM-SHA-1", sha1.New)
|
|
)
|
|
|
|
// Mechanism represents a SASL mechanism that can be used by a Client or Server
|
|
// to perform the actual negotiation. Base64 encoding the final challenges and
|
|
// responses should not be performed by the mechanism.
|
|
//
|
|
// Mechanisms must be stateless and may be shared between goroutines. When a
|
|
// mechanism needs to store state between the different steps it can return
|
|
// anything that it needs to store and the value will be cached by the
|
|
// negotiator and passed in as the data parameter when the next challenge is
|
|
// received.
|
|
type Mechanism struct {
|
|
Name string
|
|
Start func(n *Negotiator) (more bool, resp []byte, cache interface{}, err error)
|
|
Next func(n *Negotiator, challenge []byte, data interface{}) (more bool, resp []byte, cache interface{}, err error)
|
|
}
|