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users: don't allow names ending with file extensions.

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This is so in the future we can have URLs like https://danbooru.donmai.us/users/evazion
without problems caused by names like https://danbooru.donmai.us/users/evazion.json
This commit is contained in:
evazion
2022-03-07 04:36:20 -06:00
parent 525acd17a5
commit 74d6b4e81e
2 changed files with 8 additions and 0 deletions
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2
app/logical/user_name_validator.rb
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@@ -24,6 +24,8 @@ class UserNameValidator < ActiveModel::EachValidator
rec.errors.add(attr, "can't start with '#{name.first}'")
elsif name =~ /[[:punct:]]\z/
rec.errors.add(attr, "can't end with '#{name.last}'")
elsif name =~ /\.(html|json|xml|atom|rss|txt|js|css|csv|png|jpg|jpeg|gif|png|mp4|webm|zip|pdf|exe|sitemap)\z/i
rec.errors.add(attr, "can't end with a file extension")
elsif name =~ /__/
rec.errors.add(attr, "can't contain multiple underscores in a row")
elsif forbidden_characters.present?