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Warn about client-command-looking nicknames #203

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emersion opened this issue Mar 3, 2023 · 1 comment
Open

Warn about client-command-looking nicknames #203

emersion opened this issue Mar 3, 2023 · 1 comment

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@emersion
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emersion commented Mar 3, 2023

Recommend servers to reject nicknames such as /quit, in the section about nickname string restrictions.

The protocol doesn't require it, but accepting nicknames starting with a / would be dangerous for most IRC clients, as autocomplete features could result in commands being executed.

@SadieCat
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SadieCat commented Mar 3, 2023

This is where that should be added. Might also be good to prevent a nickname from beginning with a prefix mode character to avoid issues with parsing prefixes with multi-prefix.

tommyrot added a commit to tommyrot/modern-irc that referenced this issue Mar 28, 2023
…e syntax as RFC1459 and is the most commonly used one. I'm unsure why the modern documentation tries to be so loose and unspecific about this syntax considering it already clearly states "Servers MAY have additional implementation-specific nickname restrictions.".

Should solve ircdocs#203
tommyrot added a commit to tommyrot/modern-irc that referenced this issue May 7, 2023
…dvise server implementations to avoid possible detrimental ambiguity.

Should solve ircdocs#203
progval pushed a commit that referenced this issue Nov 25, 2023
List channel membership prefixes in the nickname as prohibited, and advise server implementations to avoid possible detrimental ambiguity.

Should solve #203
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