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znc --makeconf username does not correctly allow alphanumeric #739

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opened 2026-10-05 04:42:00 +02:00 by adam · 2 comments
adam commented 2026-10-05 04:42:00 +02:00
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znc --makeconf
username validation does not correctly allow all alphanumerics.

e.g try "77abc" this will be rejected, then try "abc77" this will be accepted. Both should be valid alphanumeric.

`znc --makeconf` username validation does not correctly allow all alphanumerics. e.g try "77abc" this will be rejected, then try "abc77" this will be accepted. Both should be valid alphanumeric. <!-- github-sync-id:193246381 -->
adam closed this issue 2026-10-05 04:42:00 +02:00
adam commented 2026-10-05 04:42:01 +02:00
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I think the IRC RFC forbids usernames from starting with numbers and I didn't check, but I think ZNC uses username as the default nickname, so I don't think this is an issue.

I think the IRC RFC forbids usernames from starting with numbers and I didn't check, but I think ZNC uses username as the default nickname, so I don't think this is an issue. <!-- github-comment-id:264699072 -->
adam commented 2026-10-05 04:42:02 +02:00
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Ah yes
nickname = ( letter / special ) *8( letter / digit / special / "-" )
From section 2.3.1

Thanks!

Ah yes `nickname = ( letter / special ) *8( letter / digit / special / "-" )` From [section 2.3.1](https://tools.ietf.org/html/rfc2812#section-2.3.1) Thanks! <!-- github-comment-id:264895713 -->
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Reference: adam/znc#739