discourse/lib/spam_handler.rb

# frozen_string_literal: true

class SpamHandler
  def self.should_prevent_registration_from_ip?(ip_address)
    return false if SiteSetting.max_new_accounts_per_registration_ip <= 0

    tl2_plus_accounts_with_same_ip =
      User.where("trust_level >= ?", TrustLevel[2]).where(ip_address: ip_address.to_s).count

    return false if tl2_plus_accounts_with_same_ip > 0

    staff_members_with_same_ip =
      Group[:staff].users.human_users.where(ip_address: ip_address.to_s).count

    return false if staff_members_with_same_ip > 0

    allowed_ip = ScreenedIpAddress.is_allowed?(ip_address)
    return false if allowed_ip

    tl0_accounts_with_same_ip =
      User.unscoped.where(trust_level: TrustLevel[0]).where(ip_address: ip_address.to_s).count

    tl0_accounts_with_same_ip >= SiteSetting.max_new_accounts_per_registration_ip
  end
end