Bram Matthys
0cf0c0faa2
This is to guard against clients that do like CAP LS 302, NICK, USER, AUTHENTICATE, CAP END, without waiting for the SASL result. Previously "CAP END" would abort SASL if the response was not in yet. Now "CAP END" will cause us to wait for SASL success/fail/timeout and when that happens we will end the handshake and the user will come online (or not, if e.g. banned). In other words, SASL is no longer canceled upon premature CAP END. And yeah, clients should wait, as is mentioned in https://ircv3.net/specs/extensions/sasl-3.1 "it is RECOMMENDED to only send CAP END when the SASL exchange is completed or needs to be aborted" But since it is a recommendation and not a hard requirement, we'll be nice and handle this situation server-side. Of course, clients could still misbehave then by sending stuff blindly after CAP END, like JOIN events, without even checking if they got numeric 001 and so on... so in that sense it shifts the problem a bit.. but.. at least that type of waiting is hopefully more common :D
About UnrealIRCd
UnrealIRCd is an Open Source IRC Server, serving thousands of networks since 1999. It runs on Linux, OS X and Windows and is currently the most widely deployed IRCd with a market share of 38%. UnrealIRCd is a highly advanced IRCd with a strong focus on modularity and security. It uses an advanced and highly configurable configuration file. Other key features include: full IRCv3 support, SSL/TLS, cloaking, advanced anti-flood and anti-spam systems, GeoIP, remote includes, and lots of other features. We are also particularly proud on our extensive online documentation.
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