49 lines
1.5 KiB
Ruby
49 lines
1.5 KiB
Ruby
# frozen_string_literal: true
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# QualifiedDomainArrayValidator
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#
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# Custom validator for URL hosts/'qualified domains' (FQDNs, ex: gitlab.com, sub.example.com).
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# This does not check if the domain actually exists. It only checks if it is a
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# valid domain string.
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#
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# Example:
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#
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# class ApplicationSetting < ApplicationRecord
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# validates :outbound_local_requests_whitelist, qualified_domain_array: true
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# end
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#
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class QualifiedDomainArrayValidator < ActiveModel::EachValidator
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def validate_each(record, attribute, value)
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validate_value_present(record, attribute, value)
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validate_host_length(record, attribute, value)
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validate_idna_encoding(record, attribute, value)
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validate_sanitization(record, attribute, value)
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end
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private
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def validate_value_present(record, attribute, value)
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return unless value.nil?
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record.errors.add(attribute, _('entries cannot be nil'))
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end
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def validate_host_length(record, attribute, value)
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return unless value&.any? { |entry| entry.size > 255 }
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record.errors.add(attribute, _('entries cannot be larger than 255 characters'))
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end
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def validate_idna_encoding(record, attribute, value)
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return if value&.all?(&:ascii_only?)
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record.errors.add(attribute, _('unicode domains should use IDNA encoding'))
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end
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def validate_sanitization(record, attribute, value)
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sanitizer = Rails::Html::FullSanitizer.new
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return unless value&.any? { |str| sanitizer.sanitize(str) != str }
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record.errors.add(attribute, _('entries cannot contain HTML tags'))
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end
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end
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