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# 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
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