storj/private/post/login.go

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// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.
package post
import (
"net/smtp"
"github.com/zeebo/errs"
)
// LoginAuth implements LOGIN authentication mechanism
type LoginAuth struct {
Username string
Password string
}
// Start begins an authentication with a server
func (auth LoginAuth) Start(server *smtp.ServerInfo) (proto string, toServer []byte, err error) {
if !server.TLS {
return "", nil, errs.New("unencrypted connection")
}
return "LOGIN", nil, nil
}
// Next continues the authentication with server response and flag representing
// if server expects more data from client
func (auth LoginAuth) Next(fromServer []byte, more bool) (toServer []byte, err error) {
if more {
switch string(fromServer) {
case "Username:":
return []byte(auth.Username), nil
case "Password:":
return []byte(auth.Password), nil
default:
return nil, errs.New("unknown question")
}
}
return nil, nil
}