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package sasl
// The ANONYMOUS mechanism name.
const Anonymous = "ANONYMOUS"
type anonymousClient struct {
Trace string
}
func (c *anonymousClient) Start() (mech string, ir []byte, err error) {
mech = Anonymous
ir = []byte(c.Trace)
return
}
func (c *anonymousClient) Next(challenge []byte) (response []byte, err error) {
return nil, ErrUnexpectedServerChallenge
}
// A client implementation of the ANONYMOUS authentication mechanism, as
// described in RFC 4505.
func NewAnonymousClient(trace string) Client {
return &anonymousClient{trace}
}
// Get trace information from clients logging in anonymously.
type AnonymousAuthenticator func(trace string) error
type anonymousServer struct {
done bool
authenticate AnonymousAuthenticator
}
func (s *anonymousServer) Next(response []byte) (challenge []byte, done bool, err error) {
if s.done {
err = ErrUnexpectedClientResponse
return
}
// No initial response, send an empty challenge
if response == nil {
return []byte{}, false, nil
}
s.done = true
err = s.authenticate(string(response))
done = true
return
}
// A server implementation of the ANONYMOUS authentication mechanism, as
// described in RFC 4505.
func NewAnonymousServer(authenticator AnonymousAuthenticator) Server {
return &anonymousServer{authenticate: authenticator}
}
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