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