# frozen_string_literal: true require 'spec_helper' RSpec.describe 'trusted_proxies' do context 'with default config' do before do set_trusted_proxies([]) end it 'preserves private IPs' do request = stub_request('HTTP_X_FORWARDED_FOR' => '10.1.5.89') expect(request.remote_ip).to eq('10.1.5.89') expect(request.ip).to eq('10.1.5.89') end it 'filters out localhost' do request = stub_request('HTTP_X_FORWARDED_FOR' => '1.1.1.1, 10.1.5.89, 127.0.0.1') expect(request.remote_ip).to eq('10.1.5.89') expect(request.ip).to eq('10.1.5.89') end it 'filters out bad values' do request = stub_request('HTTP_X_FORWARDED_FOR' => '(null), 10.1.5.89') expect(request.remote_ip).to eq('10.1.5.89') expect(request.ip).to eq('10.1.5.89') end end context 'with private IP ranges added' do before do set_trusted_proxies(["10.0.0.0/8", "172.16.0.0/12", "192.168.0.0/16"]) end it 'filters out private and local IPs' do request = stub_request('HTTP_X_FORWARDED_FOR' => '1.2.3.6, 1.1.1.1, 10.1.5.89, 127.0.0.1') expect(request.remote_ip).to eq('1.1.1.1') expect(request.ip).to eq('1.1.1.1') end end context 'with proxy IP added' do before do set_trusted_proxies(["60.98.25.47"]) end it 'filters out proxy IP' do request = stub_request('HTTP_X_FORWARDED_FOR' => '1.2.3.6, 1.1.1.1, 60.98.25.47, 127.0.0.1') expect(request.remote_ip).to eq('1.1.1.1') expect(request.ip).to eq('1.1.1.1') end it 'handles invalid ip addresses' do request = stub_request('HTTP_X_FORWARDED_FOR' => '(null), 1.1.1.1:12345, 1.1.1.1') expect(request.remote_ip).to eq('1.1.1.1') expect(request.ip).to eq('1.1.1.1') end end def stub_request(headers = {}) ActionDispatch::RemoteIp.new(proc {}, false, Rails.application.config.action_dispatch.trusted_proxies).call(headers) ActionDispatch::Request.new(headers) end def set_trusted_proxies(proxies = []) stub_config_setting('trusted_proxies' => proxies) load File.join(__dir__, '../../config/initializers/trusted_proxies.rb') end end