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