zitadel/internal/notification/channels/smtp/plain_auth.go

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package smtp
import (
"net/smtp"
)
type unencryptedAuth struct {
smtp.Auth
}
// PlainAuth returns an Auth that implements the PLAIN authentication
// mechanism as defined in RFC 4616. The returned Auth uses the given
// username and password to authenticate to host and act as identity.
// Usually identity should be the empty string, to act as username.
//
// This reimplementation allows it to work over non-TLS connections
func (a unencryptedAuth) Start(server *smtp.ServerInfo) (string, []byte, error) {
s := *server
s.TLS = true
return a.Auth.Start(&s)
}