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# frozen_string_literal: true
class KeyRestrictionValidator < ActiveModel::EachValidator
FORBIDDEN = -1
ALLOWED = 0
def self.supported_sizes(type)
Gitlab::SSHPublicKey.supported_sizes(type)
end
def self.supported_key_restrictions(type)
if Gitlab::FIPS.enabled?
[*supported_sizes(type), FORBIDDEN]
else
[ALLOWED, *supported_sizes(type), FORBIDDEN]
end
end
def validate_each(record, attribute, value)
unless valid_restriction?(value)
record.errors.add(attribute, "must be #{supported_sizes_message}")
end
end
private
def supported_sizes_message
sizes = []
sizes << "forbidden" if valid_restriction?(FORBIDDEN)
sizes << "allowed" if valid_restriction?(ALLOWED)
sizes += self.class.supported_sizes(options[:type])
Gitlab::Sentence.to_exclusive_sentence(sizes)
end
def valid_restriction?(value)
choices = self.class.supported_key_restrictions(options[:type])
choices.include?(value)
end
end
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