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// Copyright (c) 2012, Sean Treadway, SoundCloud Ltd.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Source code and contact info at http://github.com/streadway/amqp
package amqp
import (
"fmt"
)
// Authentication interface provides a means for different SASL authentication
// mechanisms to be used during connection tuning.
type Authentication interface {
Mechanism() string
Response() string
}
// PlainAuth is a similar to Basic Auth in HTTP.
type PlainAuth struct {
Username string
Password string
}
// Mechanism returns "PLAIN"
func (auth *PlainAuth) Mechanism() string {
return "PLAIN"
}
// Response returns the null character delimited encoding for the SASL PLAIN Mechanism.
func (auth *PlainAuth) Response() string {
return fmt.Sprintf("\000%s\000%s", auth.Username, auth.Password)
}
// AMQPlainAuth is similar to PlainAuth
type AMQPlainAuth struct {
Username string
Password string
}
// Mechanism returns "AMQPLAIN"
func (auth *AMQPlainAuth) Mechanism() string {
return "AMQPLAIN"
}
// Response returns the null character delimited encoding for the SASL PLAIN Mechanism.
func (auth *AMQPlainAuth) Response() string {
return fmt.Sprintf("LOGIN:%sPASSWORD:%s", auth.Username, auth.Password)
}
// Finds the first mechanism preferred by the client that the server supports.
func pickSASLMechanism(client []Authentication, serverMechanisms []string) (auth Authentication, ok bool) {
for _, auth = range client {
for _, mech := range serverMechanisms {
if auth.Mechanism() == mech {
return auth, true
}
}
}
return
}
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