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Add ability to manage which websites can credit you in link previews (#31819)

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Eugen Rochko 2024-09-10 14:00:40 +02:00 • committed by GitHub
parent 3929e3c6d2
commit e0c27a5047
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92 changed files with 381 additions and 160 deletions
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21
app/validators/domain_validator.rb
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@ -1,22 +1,29 @@
# frozen_string_literal: true
class DomainValidator < ActiveModel::EachValidator
MAX_DOMAIN_LENGTH = 256
MIN_LABEL_LENGTH = 1
MAX_LABEL_LENGTH = 63
ALLOWED_CHARACTERS_RE = /^[a-z0-9\-]+$/i
def validate_each(record, attribute, value)
return if value.blank?
domain = if options[:acct]
value.split('@').last
else
value
end
(options[:multiline] ? value.split : [value]).each do |domain|
_, domain = domain.split('@') if options[:acct]
record.errors.add(attribute, I18n.t('domain_validator.invalid_domain')) unless compliant?(domain)
next if domain.blank?
record.errors.add(attribute, options[:multiline] ? :invalid_domain_on_line : :invalid, value: domain) unless compliant?(domain)
end
end
private
def compliant?(value)
Addressable::URI.new.tap { |uri| uri.host = value }
uri = Addressable::URI.new
uri.host = value
uri.normalized_host.size < MAX_DOMAIN_LENGTH && uri.normalized_host.split('.').all? { |label| label.size.between?(MIN_LABEL_LENGTH, MAX_LABEL_LENGTH) && label =~ ALLOWED_CHARACTERS_RE }
rescue Addressable::URI::InvalidURIError, IDN::Idna::IdnaError
false
end