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# frozen_string_literal: true
module API
module Validations
module Validators
class FilePath < Grape::Validations::Validators::Base
def validate_param!(attr_name, params)
options = @option.is_a?(Hash) ? @option : {}
path_allowlist = options.fetch(:allowlist, [])
path = params[attr_name]
Gitlab::PathTraversal.check_allowed_absolute_path_and_path_traversal!(path, path_allowlist)
rescue StandardError
raise Grape::Exceptions::Validation.new(
params: [@scope.full_name(attr_name)],
message: "should be a valid file path"
)
end
end
end
end
end
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