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# frozen_string_literal: true
require "ipaddr"
require "isolation/abstract_unit"
require "active_support/key_generator"
module ApplicationTests
class RemoteIpTest < ActiveSupport::TestCase
include ActiveSupport::Testing::Isolation
def remote_ip(env = {})
remote_ip = nil
env = Rack::MockRequest.env_for("/").merge(env).merge!(
"action_dispatch.show_exceptions" => false,
"action_dispatch.key_generator" => ActiveSupport::CachingKeyGenerator.new(
ActiveSupport::KeyGenerator.new("b3c631c314c0bbca50c1b2843150fe33", iterations: 1000)
)
)
endpoint = Proc.new do |e|
remote_ip = ActionDispatch::Request.new(e).remote_ip
[200, {}, ["Hello"]]
end
Rails.application.middleware.build(endpoint).call(env)
remote_ip
end
test "remote_ip works" do
make_basic_app
assert_equal "1.1.1.1", remote_ip("REMOTE_ADDR" => "1.1.1.1")
end
test "checks IP spoofing by default" do
make_basic_app
assert_raises(ActionDispatch::RemoteIp::IpSpoofAttackError) do
remote_ip("HTTP_X_FORWARDED_FOR" => "1.1.1.1", "HTTP_CLIENT_IP" => "1.1.1.2")
end
end
test "works with both headers individually" do
make_basic_app
assert_nothing_raised do
assert_equal "1.1.1.1", remote_ip("HTTP_X_FORWARDED_FOR" => "1.1.1.1")
end
assert_nothing_raised do
assert_equal "1.1.1.2", remote_ip("HTTP_CLIENT_IP" => "1.1.1.2")
end
end
test "can disable IP spoofing check" do
make_basic_app do |app|
app.config.action_dispatch.ip_spoofing_check = false
end
assert_nothing_raised do
assert_equal "1.1.1.1", remote_ip("HTTP_X_FORWARDED_FOR" => "1.1.1.1", "HTTP_CLIENT_IP" => "1.1.1.2")
end
end
test "remote_ip works with HTTP_X_FORWARDED_FOR" do
make_basic_app
assert_equal "4.2.42.42", remote_ip("REMOTE_ADDR" => "1.1.1.1", "HTTP_X_FORWARDED_FOR" => "4.2.42.42")
end
test "the user can set trusted proxies" do
make_basic_app do |app|
app.config.action_dispatch.trusted_proxies = /^4\.2\.42\.42$/
end
assert_equal "1.1.1.1", remote_ip("REMOTE_ADDR" => "1.1.1.1", "HTTP_X_FORWARDED_FOR" => "4.2.42.42")
end
test "the user can set trusted proxies with an IPAddr argument" do
make_basic_app do |app|
app.config.action_dispatch.trusted_proxies = IPAddr.new("4.2.42.0/24")
end
assert_equal "1.1.1.1", remote_ip("REMOTE_ADDR" => "1.1.1.1", "HTTP_X_FORWARDED_FOR" => "10.0.0.0,4.2.42.42")
end
end
end
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