EncodeSASLResponse encodes a raw SASL response as parameters to successive AUTHENTICATE commands, as described in the IRCv3 SASL specification.

HostnameIsValid provides a way for servers to check whether a looked-up client hostname is valid (see InspIRCd #1033 for why this is required).

NewSASLBuffer returns a new SASLBuffer.

Sanitizes human-readable text to make it safe for IRC; assumes UTF-8 and uses the replacement character where applicable.

SASLBuffer handles buffering and decoding SASL responses sent as parameters to AUTHENTICATE commands, as described in the IRCv3 SASL specification.