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Add checking for auth to Server example. #272

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Add checking for auth to Server example. #272

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14 changes: 13 additions & 1 deletion example_server_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,9 @@ func (bkd *Backend) NewSession(c *smtp.Conn) (smtp.Session, error) {
}

// A Session is returned after successful login.
type Session struct{}
type Session struct {
auth bool
}

// AuthMechanisms returns a slice of available auth mechanisms; only PLAIN is
// supported in this example.
Expand All @@ -33,21 +35,31 @@ func (s *Session) Auth(mech string) (sasl.Server, error) {
if username != "username" || password != "password" {
return errors.New("Invalid username or password")
}
s.auth = true
return nil
}), nil
}

func (s *Session) Mail(from string, opts *smtp.MailOptions) error {
if !s.auth {
return smtp.ErrAuthRequired
}
log.Println("Mail from:", from)
return nil
}

func (s *Session) Rcpt(to string, opts *smtp.RcptOptions) error {
if !s.auth {
return smtp.ErrAuthRequired
}
log.Println("Rcpt to:", to)
return nil
}

func (s *Session) Data(r io.Reader) error {
if !s.auth {
return smtp.ErrAuthRequired
}
if b, err := io.ReadAll(r); err != nil {
return err
} else {
Expand Down