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# frozen_string_literal: true
module Gitlab
module Auth
class UniqueIpsLimiter
USER_UNIQUE_IPS_PREFIX = 'user_unique_ips'.freeze
class << self
def limit_user_id!(user_id)
if config.unique_ips_limit_enabled
ip = RequestContext.client_ip
unique_ips = update_and_return_ips_count(user_id, ip)
raise TooManyIps.new(user_id, ip, unique_ips) if unique_ips > config.unique_ips_limit_per_user
end
end
def limit_user!(user = nil)
user ||= yield if block_given?
limit_user_id!(user.id) unless user.nil?
user
end
def config
Gitlab::CurrentSettings.current_application_settings
end
def update_and_return_ips_count(user_id, ip)
time = Time.now.utc.to_i
key = "#{USER_UNIQUE_IPS_PREFIX}:#{user_id}"
Gitlab::Redis::SharedState.with do |redis|
unique_ips_count = nil
redis.multi do |r|
r.zadd(key, time, ip)
r.zremrangebyscore(key, 0, time - config.unique_ips_limit_time_window)
unique_ips_count = r.zcard(key)
end
unique_ips_count.value
end
end
end
end
end
end
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