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Don't steal emoji who's shortcodes have dots or colons in their name

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Mastodon at the very least seems to prevent the creation of emoji with
dots in their name (and refuses to accept them in federation). It feels
like being cautious in what we accept is reasonable here.

Colons are the emoji separator and so obviously should be blocked.

Perhaps instead of filtering out things like this we should just
do a regex match on `[a-zA-Z0-9_-]`? But that's plausibly a decision
for another day

    Perhaps we should also have a centralised "is this a valid emoji shortcode?"
    function
This commit is contained in:
Erin Shepherd 2024-02-20 11:31:29 +01:00
parent 7d94476dd6
commit b387f4a1c1
1 changed files with 1 additions and 1 deletions
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2
lib/pleroma/web/activity_pub/mrf/steal_emoji_policy.ex
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@ -77,7 +77,7 @@ def filter(%{"object" => %{"emoji" => foreign_emojis, "actor" => actor}} = messa
new_emojis =
foreign_emojis
|> Enum.reject(fn {shortcode, _url} -> shortcode in installed_emoji end)
|> Enum.reject(fn {shortcode, _url} -> String.contains?(shortcode, ["/", "\\"]) end)
|> Enum.reject(fn {shortcode, _url} -> String.contains?(shortcode, ["/", "\\", ".", ":"]) end)
|> Enum.filter(fn {shortcode, _url} ->
reject_emoji? =
[:mrf_steal_emoji, :rejected_shortcodes]