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316 lines
9.0 KiB
Ruby
316 lines
9.0 KiB
Ruby
# frozen_string_literal: true
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require "rails_helper"
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describe Middleware::AnonymousCache do
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let(:middleware) { Middleware::AnonymousCache.new(lambda { |_| [200, {}, []] }) }
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def env(opts = {})
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Rack::MockRequest.env_for("http://test.com/path?bla=1").merge(opts)
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end
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describe Middleware::AnonymousCache::Helper do
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def new_helper(opts = {})
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Middleware::AnonymousCache::Helper.new(env(opts))
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end
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context "cachable?" do
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it "true by default" do
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expect(new_helper.cacheable?).to eq(true)
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end
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it "is false for non GET" do
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expect(new_helper("ANON_CACHE_DURATION" => 10, "REQUEST_METHOD" => "POST").cacheable?).to eq(false)
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end
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it "is false if it has an auth cookie" do
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expect(new_helper("HTTP_COOKIE" => "jack=1; _t=#{"1" * 32}; jill=2").cacheable?).to eq(false)
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end
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end
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context "per theme cache" do
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it "handles theme keys" do
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theme = Fabricate(:theme, user_selectable: true)
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with_bad_theme_key = new_helper("HTTP_COOKIE" => "theme_ids=abc").cache_key
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with_no_theme_key = new_helper().cache_key
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expect(with_bad_theme_key).to eq(with_no_theme_key)
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with_good_theme_key = new_helper("HTTP_COOKIE" => "theme_ids=#{theme.id}").cache_key
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expect(with_good_theme_key).not_to eq(with_no_theme_key)
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end
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end
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context "with header-based locale locale" do
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it "handles different languages" do
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# Normally does not check the language header
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french1 = new_helper("HTTP_ACCEPT_LANGUAGE" => "fr").cache_key
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french2 = new_helper("HTTP_ACCEPT_LANGUAGE" => "FR").cache_key
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english = new_helper("HTTP_ACCEPT_LANGUAGE" => SiteSetting.default_locale).cache_key
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none = new_helper.cache_key
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expect(none).to eq(french1)
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expect(none).to eq(french2)
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expect(none).to eq(english)
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SiteSetting.allow_user_locale = true
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SiteSetting.set_locale_from_accept_language_header = true
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french1 = new_helper("HTTP_ACCEPT_LANGUAGE" => "fr").cache_key
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french2 = new_helper("HTTP_ACCEPT_LANGUAGE" => "FR").cache_key
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english = new_helper("HTTP_ACCEPT_LANGUAGE" => SiteSetting.default_locale).cache_key
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none = new_helper.cache_key
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expect(none).to eq(english)
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expect(french1).to eq(french2)
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expect(french1).not_to eq(none)
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end
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end
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context "cached" do
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let!(:helper) do
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new_helper("ANON_CACHE_DURATION" => 10)
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end
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let!(:crawler) do
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new_helper("ANON_CACHE_DURATION" => 10, "HTTP_USER_AGENT" => "AdsBot-Google (+http://www.google.com/adsbot.html)")
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end
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after do
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helper.clear_cache
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crawler.clear_cache
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end
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before do
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global_setting :anon_cache_store_threshold, 1
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end
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it "compresses body on demand" do
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global_setting :compress_anon_cache, true
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payload = "x" * 1000
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helper.cache([200, { "HELLO" => "WORLD" }, [payload]])
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helper = new_helper("ANON_CACHE_DURATION" => 10)
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expect(helper.cached).to eq([200, { "X-Discourse-Cached" => "true", "HELLO" => "WORLD" }, [payload]])
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# depends on i7z implementation, but lets assume it is stable unless we discover
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# otherwise
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expect(Discourse.redis.get(helper.cache_key_body).length).to eq(16)
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end
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it "handles brotli switching" do
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helper.cache([200, { "HELLO" => "WORLD" }, ["hello ", "my world"]])
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helper = new_helper("ANON_CACHE_DURATION" => 10)
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expect(helper.cached).to eq([200, { "X-Discourse-Cached" => "true", "HELLO" => "WORLD" }, ["hello my world"]])
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helper = new_helper("ANON_CACHE_DURATION" => 10, "HTTP_ACCEPT_ENCODING" => "gz, br")
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expect(helper.cached).to eq(nil)
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end
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it "returns cached data for cached requests" do
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helper.is_mobile = true
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expect(helper.cached).to eq(nil)
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helper.cache([200, { "HELLO" => "WORLD" }, ["hello ", "my world"]])
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helper = new_helper("ANON_CACHE_DURATION" => 10)
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helper.is_mobile = true
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expect(helper.cached).to eq([200, { "X-Discourse-Cached" => "true", "HELLO" => "WORLD" }, ["hello my world"]])
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expect(crawler.cached).to eq(nil)
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crawler.cache([200, { "HELLO" => "WORLD" }, ["hello ", "world"]])
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expect(crawler.cached).to eq([200, { "X-Discourse-Cached" => "true", "HELLO" => "WORLD" }, ["hello world"]])
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end
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end
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end
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context 'force_anonymous!' do
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before do
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RateLimiter.enable
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end
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after do
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RateLimiter.disable
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end
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it 'will revert to anonymous once we reach the limit' do
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RateLimiter.clear_all!
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is_anon = false
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app = Middleware::AnonymousCache.new(
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lambda do |env|
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is_anon = env["HTTP_COOKIE"].nil?
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[200, {}, ["ok"]]
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end
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)
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global_setting :force_anonymous_min_per_10_seconds, 2
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global_setting :force_anonymous_min_queue_seconds, 1
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env = {
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"HTTP_COOKIE" => "_t=#{SecureRandom.hex}",
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"HOST" => "site.com",
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"REQUEST_METHOD" => "GET",
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"REQUEST_URI" => "/somewhere/rainbow",
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"REQUEST_QUEUE_SECONDS" => 2.1,
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"rack.input" => StringIO.new
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}
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is_anon = false
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app.call(env.dup)
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expect(is_anon).to eq(false)
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is_anon = false
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app.call(env.dup)
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expect(is_anon).to eq(false)
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is_anon = false
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app.call(env.dup)
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expect(is_anon).to eq(true)
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is_anon = false
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_status, headers, _body = app.call(env.dup)
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expect(is_anon).to eq(true)
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expect(headers['Set-Cookie']).to eq('dosp=1; Path=/')
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# tricky change, a 50ms delay still will trigger protection
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# once it is tripped
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env["REQUEST_QUEUE_SECONDS"] = 0.05
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is_anon = false
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app.call(env.dup)
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expect(is_anon).to eq(true)
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is_anon = false
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env["REQUEST_QUEUE_SECONDS"] = 0.01
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app.call(env.dup)
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expect(is_anon).to eq(false)
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end
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end
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context 'invalid request payload' do
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it 'returns 413 for GET request with payload' do
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status, _, _ = middleware.call(env.tap do |environment|
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environment[Rack::RACK_INPUT].write("test")
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end)
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expect(status).to eq(413)
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end
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end
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context "crawler blocking" do
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let :non_crawler do
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{
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"HTTP_USER_AGENT" =>
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"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36"
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}
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end
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def get(path, options)
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@env = env({
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"REQUEST_URI" => path,
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"PATH_INFO" => path,
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"REQUEST_PATH" => path
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}.merge(options[:headers]))
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@status, @response_header, @response = middleware.call(@env)
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end
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it "applies allowed_crawler_user_agents correctly" do
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SiteSetting.allowed_crawler_user_agents = 'Googlebot'
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get '/', headers: {
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'HTTP_USER_AGENT' => 'Googlebot/2.1 (+http://www.google.com/bot.html)'
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}
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expect(@status).to eq(200)
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get '/', headers: {
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'HTTP_USER_AGENT' => 'Anotherbot/2.1 (+http://www.notgoogle.com/bot.html)'
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}
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expect(@status).to eq(403)
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expect(@response).to be_an(Array)
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get '/', headers: non_crawler
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expect(@status).to eq(200)
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end
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it "doesn't block api requests" do
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SiteSetting.allowed_crawler_user_agents = 'Googlebot'
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api_key = Fabricate(:api_key)
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get "/latest?api_key=#{api_key.key}&api_username=system", headers: {
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"QUERY_STRING" => "api_key=#{api_key.key}&api_username=system"
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}
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expect(@status).to eq(200)
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end
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it "applies blocked_crawler_user_agents correctly" do
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SiteSetting.blocked_crawler_user_agents = 'Googlebot'
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get '/', headers: non_crawler
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expect(@status).to eq(200)
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get '/', headers: {
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'HTTP_USER_AGENT' => 'Googlebot/2.1 (+http://www.google.com/bot.html)'
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}
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expect(@status).to eq(403)
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get '/', headers: {
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'HTTP_USER_AGENT' => 'Twitterbot/2.1 (+http://www.notgoogle.com/bot.html)'
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}
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expect(@status).to eq(200)
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end
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it "should never block robots.txt" do
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SiteSetting.blocked_crawler_user_agents = 'Googlebot'
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get '/robots.txt', headers: {
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'HTTP_USER_AGENT' => 'Googlebot/2.1 (+http://www.google.com/bot.html)'
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}
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expect(@status).to eq(200)
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end
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it "should never block srv/status" do
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SiteSetting.blocked_crawler_user_agents = 'Googlebot'
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get '/srv/status', headers: {
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'HTTP_USER_AGENT' => 'Googlebot/2.1 (+http://www.google.com/bot.html)'
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}
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expect(@status).to eq(200)
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end
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it "blocked crawlers shouldn't log page views" do
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SiteSetting.blocked_crawler_user_agents = 'Googlebot'
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get '/', headers: {
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'HTTP_USER_AGENT' => 'Googlebot/2.1 (+http://www.google.com/bot.html)'
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}
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expect(@env["discourse.request_tracker.skip"]).to eq(true)
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end
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it "blocks json requests" do
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SiteSetting.blocked_crawler_user_agents = 'Googlebot'
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get '/srv/status.json', headers: {
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'HTTP_USER_AGENT' => 'Googlebot/2.1 (+http://www.google.com/bot.html)'
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}
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expect(@status).to eq(403)
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end
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end
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end
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