gitlab-org--gitlab-foss/spec/requests/rack_attack_global_spec.rb

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require 'spec_helper'
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describe 'Rack Attack global throttles' do
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let(:settings) { Gitlab::CurrentSettings.current_application_settings }
# Start with really high limits and override them with low limits to ensure
# the right settings are being exercised
let(:settings_to_set) do
{
throttle_unauthenticated_requests_per_period: 100,
throttle_unauthenticated_period_in_seconds: 1,
throttle_authenticated_api_requests_per_period: 100,
throttle_authenticated_api_period_in_seconds: 1,
throttle_authenticated_web_requests_per_period: 100,
throttle_authenticated_web_period_in_seconds: 1
}
end
let(:requests_per_period) { 1 }
let(:period_in_seconds) { 10000 }
let(:period) { period_in_seconds.seconds }
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let(:url_that_does_not_require_authentication) { '/users/sign_in' }
let(:url_that_requires_authentication) { '/dashboard/snippets' }
let(:api_partial_url) { '/todos' }
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around do |example|
# Instead of test environment's :null_store so the throttles can increment
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Rack::Attack.cache.store = ActiveSupport::Cache::MemoryStore.new
# Make time-dependent tests deterministic
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Timecop.freeze { example.run }
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Rack::Attack.cache.store = Rails.cache
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end
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# Requires let variables:
# * throttle_setting_prefix (e.g. "throttle_authenticated_api" or "throttle_authenticated_web")
# * get_args
# * other_user_get_args
shared_examples_for 'rate-limited token-authenticated requests' do
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before do
# Set low limits
settings_to_set[:"#{throttle_setting_prefix}_requests_per_period"] = requests_per_period
settings_to_set[:"#{throttle_setting_prefix}_period_in_seconds"] = period_in_seconds
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end
context 'when the throttle is enabled' do
before do
settings_to_set[:"#{throttle_setting_prefix}_enabled"] = true
stub_application_setting(settings_to_set)
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end
it 'rejects requests over the rate limit' do
# At first, allow requests under the rate limit.
requests_per_period.times do
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get(*get_args)
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expect(response).to have_http_status 200
end
# the last straw
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expect_rejection { get(*get_args) }
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end
it 'allows requests after throttling and then waiting for the next period' do
requests_per_period.times do
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get(*get_args)
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expect(response).to have_http_status 200
end
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expect_rejection { get(*get_args) }
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Timecop.travel(period.from_now) do
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requests_per_period.times do
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get(*get_args)
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expect(response).to have_http_status 200
end
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expect_rejection { get(*get_args) }
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end
end
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it 'counts requests from different users separately, even from the same IP' do
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requests_per_period.times do
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get(*get_args)
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expect(response).to have_http_status 200
end
# would be over the limit if this wasn't a different user
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get(*other_user_get_args)
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expect(response).to have_http_status 200
end
it 'counts all requests from the same user, even via different IPs' do
requests_per_period.times do
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get(*get_args)
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expect(response).to have_http_status 200
end
expect_any_instance_of(Rack::Attack::Request).to receive(:ip).and_return('1.2.3.4')
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expect_rejection { get(*get_args) }
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end
end
context 'when the throttle is disabled' do
before do
settings_to_set[:"#{throttle_setting_prefix}_enabled"] = false
stub_application_setting(settings_to_set)
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end
it 'allows requests over the rate limit' do
(1 + requests_per_period).times do
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get(*get_args)
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expect(response).to have_http_status 200
end
end
end
end
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describe 'unauthenticated requests' do
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before do
# Set low limits
settings_to_set[:throttle_unauthenticated_requests_per_period] = requests_per_period
settings_to_set[:throttle_unauthenticated_period_in_seconds] = period_in_seconds
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end
context 'when the throttle is enabled' do
before do
settings_to_set[:throttle_unauthenticated_enabled] = true
stub_application_setting(settings_to_set)
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end
it 'rejects requests over the rate limit' do
# At first, allow requests under the rate limit.
requests_per_period.times do
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get url_that_does_not_require_authentication
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expect(response).to have_http_status 200
end
# the last straw
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expect_rejection { get url_that_does_not_require_authentication }
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end
it 'allows requests after throttling and then waiting for the next period' do
requests_per_period.times do
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get url_that_does_not_require_authentication
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expect(response).to have_http_status 200
end
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expect_rejection { get url_that_does_not_require_authentication }
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Timecop.travel(period.from_now) do
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requests_per_period.times do
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get url_that_does_not_require_authentication
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expect(response).to have_http_status 200
end
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expect_rejection { get url_that_does_not_require_authentication }
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end
end
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it 'counts requests from different IPs separately' do
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requests_per_period.times do
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get url_that_does_not_require_authentication
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expect(response).to have_http_status 200
end
expect_any_instance_of(Rack::Attack::Request).to receive(:ip).and_return('1.2.3.4')
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# would be over limit for the same IP
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get url_that_does_not_require_authentication
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expect(response).to have_http_status 200
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end
end
context 'when the throttle is disabled' do
before do
settings_to_set[:throttle_unauthenticated_enabled] = false
stub_application_setting(settings_to_set)
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end
it 'allows requests over the rate limit' do
(1 + requests_per_period).times do
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get url_that_does_not_require_authentication
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expect(response).to have_http_status 200
end
end
end
end
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describe 'API requests authenticated with personal access token', :api do
let(:user) { create(:user) }
let(:token) { create(:personal_access_token, user: user) }
let(:other_user) { create(:user) }
let(:other_user_token) { create(:personal_access_token, user: other_user) }
let(:throttle_setting_prefix) { 'throttle_authenticated_api' }
context 'with the token in the query string' do
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let(:get_args) { [api(api_partial_url, personal_access_token: token)] }
let(:other_user_get_args) { [api(api_partial_url, personal_access_token: other_user_token)] }
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it_behaves_like 'rate-limited token-authenticated requests'
end
context 'with the token in the headers' do
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let(:get_args) { api_get_args_with_token_headers(api_partial_url, personal_access_token_headers(token)) }
let(:other_user_get_args) { api_get_args_with_token_headers(api_partial_url, personal_access_token_headers(other_user_token)) }
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it_behaves_like 'rate-limited token-authenticated requests'
end
end
describe 'API requests authenticated with OAuth token', :api do
let(:user) { create(:user) }
let(:application) { Doorkeeper::Application.create!(name: "MyApp", redirect_uri: "https://app.com", owner: user) }
let(:token) { Doorkeeper::AccessToken.create!(application_id: application.id, resource_owner_id: user.id, scopes: "api") }
let(:other_user) { create(:user) }
let(:other_user_application) { Doorkeeper::Application.create!(name: "MyApp", redirect_uri: "https://app.com", owner: other_user) }
let(:other_user_token) { Doorkeeper::AccessToken.create!(application_id: application.id, resource_owner_id: other_user.id, scopes: "api") }
let(:throttle_setting_prefix) { 'throttle_authenticated_api' }
context 'with the token in the query string' do
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let(:get_args) { [api(api_partial_url, oauth_access_token: token)] }
let(:other_user_get_args) { [api(api_partial_url, oauth_access_token: other_user_token)] }
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it_behaves_like 'rate-limited token-authenticated requests'
end
context 'with the token in the headers' do
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let(:get_args) { api_get_args_with_token_headers(api_partial_url, oauth_token_headers(token)) }
let(:other_user_get_args) { api_get_args_with_token_headers(api_partial_url, oauth_token_headers(other_user_token)) }
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it_behaves_like 'rate-limited token-authenticated requests'
end
end
describe '"web" (non-API) requests authenticated with RSS token' do
let(:user) { create(:user) }
let(:other_user) { create(:user) }
let(:throttle_setting_prefix) { 'throttle_authenticated_web' }
context 'with the token in the query string' do
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let(:get_args) { [rss_url(user), nil] }
let(:other_user_get_args) { [rss_url(other_user), nil] }
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it_behaves_like 'rate-limited token-authenticated requests'
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end
end
describe 'web requests authenticated with regular login' do
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let(:user) { create(:user) }
before do
login_as(user)
# Set low limits
settings_to_set[:throttle_authenticated_web_requests_per_period] = requests_per_period
settings_to_set[:throttle_authenticated_web_period_in_seconds] = period_in_seconds
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end
context 'when the throttle is enabled' do
before do
settings_to_set[:throttle_authenticated_web_enabled] = true
stub_application_setting(settings_to_set)
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end
it 'rejects requests over the rate limit' do
# At first, allow requests under the rate limit.
requests_per_period.times do
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get url_that_requires_authentication
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expect(response).to have_http_status 200
end
# the last straw
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expect_rejection { get url_that_requires_authentication }
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end
it 'allows requests after throttling and then waiting for the next period' do
requests_per_period.times do
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get url_that_requires_authentication
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expect(response).to have_http_status 200
end
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expect_rejection { get url_that_requires_authentication }
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Timecop.travel(period.from_now) do
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requests_per_period.times do
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get url_that_requires_authentication
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expect(response).to have_http_status 200
end
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expect_rejection { get url_that_requires_authentication }
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end
end
it 'counts requests from different users separately, even from the same IP' do
requests_per_period.times do
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get url_that_requires_authentication
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expect(response).to have_http_status 200
end
# would be over the limit if this wasn't a different user
login_as(create(:user))
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get url_that_requires_authentication
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expect(response).to have_http_status 200
end
it 'counts all requests from the same user, even via different IPs' do
requests_per_period.times do
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get url_that_requires_authentication
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expect(response).to have_http_status 200
end
expect_any_instance_of(Rack::Attack::Request).to receive(:ip).and_return('1.2.3.4')
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expect_rejection { get url_that_requires_authentication }
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end
end
context 'when the throttle is disabled' do
before do
settings_to_set[:throttle_authenticated_web_enabled] = false
stub_application_setting(settings_to_set)
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end
it 'allows requests over the rate limit' do
(1 + requests_per_period).times do
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get url_that_requires_authentication
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expect(response).to have_http_status 200
end
end
end
end
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def api_get_args_with_token_headers(partial_url, token_headers)
["/api/#{API::API.version}#{partial_url}", nil, token_headers]
end
def rss_url(user)
"/dashboard/projects.atom?rss_token=#{user.rss_token}"
end
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def private_token_headers(user)
{ 'HTTP_PRIVATE_TOKEN' => user.private_token }
end
def personal_access_token_headers(personal_access_token)
{ 'HTTP_PRIVATE_TOKEN' => personal_access_token.token }
end
def oauth_token_headers(oauth_access_token)
{ 'AUTHORIZATION' => "Bearer #{oauth_access_token.token}" }
end
def expect_rejection(&block)
yield
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expect(response).to have_http_status(429)
end
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end