# coding: utf-8
require 'spec_helper'

describe ApplicationController do
  include TermsHelper

  let(:user) { create(:user) }

  describe '#check_password_expiration' do
    let(:controller) { described_class.new }

    before do
      allow(controller).to receive(:session).and_return({})
    end

    it 'redirects if the user is over their password expiry' do
      user.password_expires_at = Time.new(2002)

      expect(user.ldap_user?).to be_falsey
      allow(controller).to receive(:current_user).and_return(user)
      expect(controller).to receive(:redirect_to)
      expect(controller).to receive(:new_profile_password_path)

      controller.send(:check_password_expiration)
    end

    it 'does not redirect if the user is under their password expiry' do
      user.password_expires_at = Time.now + 20010101

      expect(user.ldap_user?).to be_falsey
      allow(controller).to receive(:current_user).and_return(user)
      expect(controller).not_to receive(:redirect_to)

      controller.send(:check_password_expiration)
    end

    it 'does not redirect if the user is over their password expiry but they are an ldap user' do
      user.password_expires_at = Time.new(2002)

      allow(user).to receive(:ldap_user?).and_return(true)
      allow(controller).to receive(:current_user).and_return(user)
      expect(controller).not_to receive(:redirect_to)

      controller.send(:check_password_expiration)
    end

    it 'does not redirect if the user is over their password expiry but password authentication is disabled for the web interface' do
      stub_application_setting(password_authentication_enabled_for_web: false)
      stub_application_setting(password_authentication_enabled_for_git: false)
      user.password_expires_at = Time.new(2002)

      allow(controller).to receive(:current_user).and_return(user)
      expect(controller).not_to receive(:redirect_to)

      controller.send(:check_password_expiration)
    end
  end

  describe '#add_gon_variables' do
    before do
      Gon.clear
      sign_in user
    end

    let(:json_response) { JSON.parse(response.body) }

    controller(described_class) do
      def index
        render json: Gon.all_variables
      end
    end

    shared_examples 'setting gon variables' do
      it 'sets gon variables' do
        get :index, format: format

        expect(json_response.size).not_to be_zero
      end
    end

    shared_examples 'not setting gon variables' do
      it 'does not set gon variables' do
        get :index, format: format

        expect(json_response.size).to be_zero
      end
    end

    context 'with html format' do
      let(:format) { :html }

      it_behaves_like 'setting gon variables'

      context 'for peek requests' do
        before do
          request.path = '/-/peek'
        end

        it_behaves_like 'not setting gon variables'
      end
    end

    context 'with json format' do
      let(:format) { :json }

      it_behaves_like 'not setting gon variables'
    end
  end

  describe "#authenticate_user_from_personal_access_token!" do
    before do
      stub_authentication_activity_metrics(debug: false)
    end

    controller(described_class) do
      def index
        render text: 'authenticated'
      end
    end

    let(:personal_access_token) { create(:personal_access_token, user: user) }

    context "when the 'personal_access_token' param is populated with the personal access token" do
      it "logs the user in" do
        expect(authentication_metrics)
          .to increment(:user_authenticated_counter)
          .and increment(:user_session_override_counter)
          .and increment(:user_sessionless_authentication_counter)

        get :index, private_token: personal_access_token.token

        expect(response).to have_gitlab_http_status(200)
        expect(response.body).to eq('authenticated')
      end
    end

    context "when the 'PERSONAL_ACCESS_TOKEN' header is populated with the personal access token" do
      it "logs the user in" do
        expect(authentication_metrics)
          .to increment(:user_authenticated_counter)
          .and increment(:user_session_override_counter)
          .and increment(:user_sessionless_authentication_counter)

        @request.headers["PRIVATE-TOKEN"] = personal_access_token.token
        get :index

        expect(response).to have_gitlab_http_status(200)
        expect(response.body).to eq('authenticated')
      end
    end

    it "doesn't log the user in otherwise" do
      expect(authentication_metrics)
        .to increment(:user_unauthenticated_counter)

      get :index, private_token: "token"

      expect(response.status).not_to eq(200)
      expect(response.body).not_to eq('authenticated')
    end
  end

  describe 'session expiration' do
    controller(described_class) do
      # The anonymous controller will report 401 and fail to run any actions.
      # Normally, GitLab will just redirect you to sign in.
      skip_before_action :authenticate_user!, only: :index

      def index
        render text: 'authenticated'
      end
    end

    context 'authenticated user' do
      it 'does not set the expire_after option' do
        sign_in(create(:user))

        get :index

        expect(request.env['rack.session.options'][:expire_after]).to be_nil
      end
    end

    context 'unauthenticated user' do
      it 'sets the expire_after option' do
        get :index

        expect(request.env['rack.session.options'][:expire_after]).to eq(Settings.gitlab['unauthenticated_session_expire_delay'])
      end
    end
  end

  describe 'rescue from Gitlab::Git::Storage::Inaccessible' do
    controller(described_class) do
      def index
        raise Gitlab::Git::Storage::Inaccessible.new('broken', 100)
      end
    end

    it 'renders a 503 when storage is not available' do
      sign_in(create(:user))

      get :index

      expect(response.status).to eq(503)
    end

    it 'renders includes a Retry-After header' do
      sign_in(create(:user))

      get :index

      expect(response.headers['Retry-After']).to eq(100)
    end
  end

  describe 'response format' do
    controller(described_class) do
      def index
        respond_to do |format|
          format.json do
            head :ok
          end
        end
      end
    end

    before do
      sign_in user
    end

    context 'when format is handled' do
      let(:requested_format) { :json }

      it 'returns 200 response' do
        get :index, format: requested_format

        expect(response).to have_gitlab_http_status 200
      end
    end

    context 'when format is not handled' do
      it 'returns 404 response' do
        get :index

        expect(response).to have_gitlab_http_status 404
      end
    end
  end

  describe '#authenticate_sessionless_user!' do
    before do
      stub_authentication_activity_metrics(debug: false)
    end

    describe 'authenticating a user from a feed token' do
      controller(described_class) do
        def index
          render text: 'authenticated'
        end
      end

      context "when the 'feed_token' param is populated with the feed token" do
        context 'when the request format is atom' do
          it "logs the user in" do
            expect(authentication_metrics)
              .to increment(:user_authenticated_counter)
              .and increment(:user_session_override_counter)
              .and increment(:user_sessionless_authentication_counter)

            get :index, feed_token: user.feed_token, format: :atom

            expect(response).to have_gitlab_http_status 200
            expect(response.body).to eq 'authenticated'
          end
        end

        context 'when the request format is ics' do
          it "logs the user in" do
            expect(authentication_metrics)
              .to increment(:user_authenticated_counter)
              .and increment(:user_session_override_counter)
              .and increment(:user_sessionless_authentication_counter)

            get :index, feed_token: user.feed_token, format: :ics

            expect(response).to have_gitlab_http_status 200
            expect(response.body).to eq 'authenticated'
          end
        end

        context 'when the request format is neither atom nor ics' do
          it "doesn't log the user in" do
            expect(authentication_metrics)
              .to increment(:user_unauthenticated_counter)

            get :index, feed_token: user.feed_token

            expect(response.status).not_to have_gitlab_http_status 200
            expect(response.body).not_to eq 'authenticated'
          end
        end
      end

      context "when the 'feed_token' param is populated with an invalid feed token" do
        it "doesn't log the user" do
          expect(authentication_metrics)
            .to increment(:user_unauthenticated_counter)

          get :index, feed_token: 'token', format: :atom

          expect(response.status).not_to eq 200
          expect(response.body).not_to eq 'authenticated'
        end
      end
    end
  end

  describe '#route_not_found' do
    it 'renders 404 if authenticated' do
      allow(controller).to receive(:current_user).and_return(user)
      expect(controller).to receive(:not_found)
      controller.send(:route_not_found)
    end

    it 'does redirect to login page via authenticate_user! if not authenticated' do
      allow(controller).to receive(:current_user).and_return(nil)
      expect(controller).to receive(:authenticate_user!)
      controller.send(:route_not_found)
    end
  end

  describe '#set_page_title_header' do
    let(:controller) { described_class.new }

    it 'URI encodes UTF-8 characters in the title' do
      response = double(headers: {})
      allow_any_instance_of(PageLayoutHelper).to receive(:page_title).and_return('€100 · GitLab')
      allow(controller).to receive(:response).and_return(response)

      controller.send(:set_page_title_header)

      expect(response.headers['Page-Title']).to eq('%E2%82%AC100%20%C2%B7%20GitLab')
    end
  end

  context 'two-factor authentication' do
    let(:controller) { described_class.new }

    describe '#check_two_factor_requirement' do
      subject { controller.send :check_two_factor_requirement }

      it 'does not redirect if 2FA is not required' do
        allow(controller).to receive(:two_factor_authentication_required?).and_return(false)
        expect(controller).not_to receive(:redirect_to)

        subject
      end

      it 'does not redirect if user is not logged in' do
        allow(controller).to receive(:two_factor_authentication_required?).and_return(true)
        allow(controller).to receive(:current_user).and_return(nil)
        expect(controller).not_to receive(:redirect_to)

        subject
      end

      it 'does not redirect if user has 2FA enabled' do
        allow(controller).to receive(:two_factor_authentication_required?).and_return(true)
        allow(controller).to receive(:current_user).twice.and_return(user)
        allow(user).to receive(:two_factor_enabled?).and_return(true)
        expect(controller).not_to receive(:redirect_to)

        subject
      end

      it 'does not redirect if 2FA setup can be skipped' do
        allow(controller).to receive(:two_factor_authentication_required?).and_return(true)
        allow(controller).to receive(:current_user).twice.and_return(user)
        allow(user).to receive(:two_factor_enabled?).and_return(false)
        allow(controller).to receive(:skip_two_factor?).and_return(true)
        expect(controller).not_to receive(:redirect_to)

        subject
      end

      it 'redirects to 2FA setup otherwise' do
        allow(controller).to receive(:two_factor_authentication_required?).and_return(true)
        allow(controller).to receive(:current_user).twice.and_return(user)
        allow(user).to receive(:two_factor_enabled?).and_return(false)
        allow(controller).to receive(:skip_two_factor?).and_return(false)
        allow(controller).to receive(:profile_two_factor_auth_path)
        expect(controller).to receive(:redirect_to)

        subject
      end
    end

    describe '#two_factor_authentication_required?' do
      subject { controller.send :two_factor_authentication_required? }

      it 'returns false if no 2FA requirement is present' do
        allow(controller).to receive(:current_user).and_return(nil)

        expect(subject).to be_falsey
      end

      it 'returns true if a 2FA requirement is set in the application settings' do
        stub_application_setting require_two_factor_authentication: true
        allow(controller).to receive(:current_user).and_return(nil)

        expect(subject).to be_truthy
      end

      it 'returns true if a 2FA requirement is set on the user' do
        user.require_two_factor_authentication_from_group = true
        allow(controller).to receive(:current_user).and_return(user)

        expect(subject).to be_truthy
      end
    end

    describe '#two_factor_grace_period' do
      subject { controller.send :two_factor_grace_period }

      it 'returns the grace period from the application settings' do
        stub_application_setting two_factor_grace_period: 23
        allow(controller).to receive(:current_user).and_return(nil)

        expect(subject).to eq 23
      end

      context 'with a 2FA requirement set on the user' do
        let(:user) { create :user, require_two_factor_authentication_from_group: true, two_factor_grace_period: 23 }

        it 'returns the user grace period if lower than the application grace period' do
          stub_application_setting two_factor_grace_period: 24
          allow(controller).to receive(:current_user).and_return(user)

          expect(subject).to eq 23
        end

        it 'returns the application grace period if lower than the user grace period' do
          stub_application_setting two_factor_grace_period: 22
          allow(controller).to receive(:current_user).and_return(user)

          expect(subject).to eq 22
        end
      end
    end

    describe '#two_factor_grace_period_expired?' do
      subject { controller.send :two_factor_grace_period_expired? }

      before do
        allow(controller).to receive(:current_user).and_return(user)
      end

      it 'returns false if the user has not started their grace period yet' do
        expect(subject).to be_falsey
      end

      context 'with grace period started' do
        let(:user) { create :user, otp_grace_period_started_at: 2.hours.ago }

        it 'returns true if the grace period has expired' do
          allow(controller).to receive(:two_factor_grace_period).and_return(1)

          expect(subject).to be_truthy
        end

        it 'returns false if the grace period is still active' do
          allow(controller).to receive(:two_factor_grace_period).and_return(3)

          expect(subject).to be_falsey
        end
      end
    end

    describe '#two_factor_skippable' do
      subject { controller.send :two_factor_skippable? }

      before do
        allow(controller).to receive(:current_user).and_return(user)
      end

      it 'returns false if 2FA is not required' do
        allow(controller).to receive(:two_factor_authentication_required?).and_return(false)

        expect(subject).to be_falsey
      end

      it 'returns false if the user has already enabled 2FA' do
        allow(controller).to receive(:two_factor_authentication_required?).and_return(true)
        allow(user).to receive(:two_factor_enabled?).and_return(true)

        expect(subject).to be_falsey
      end

      it 'returns false if the 2FA grace period has expired' do
        allow(controller).to receive(:two_factor_authentication_required?).and_return(true)
        allow(user).to receive(:two_factor_enabled?).and_return(false)
        allow(controller).to receive(:two_factor_grace_period_expired?).and_return(true)

        expect(subject).to be_falsey
      end

      it 'returns true otherwise' do
        allow(controller).to receive(:two_factor_authentication_required?).and_return(true)
        allow(user).to receive(:two_factor_enabled?).and_return(false)
        allow(controller).to receive(:two_factor_grace_period_expired?).and_return(false)

        expect(subject).to be_truthy
      end
    end

    describe '#skip_two_factor?' do
      subject { controller.send :skip_two_factor? }

      it 'returns false if 2FA setup was not skipped' do
        allow(controller).to receive(:session).and_return({})

        expect(subject).to be_falsey
      end

      context 'with 2FA setup skipped' do
        before do
          allow(controller).to receive(:session).and_return({ skip_two_factor: 2.hours.from_now })
        end

        it 'returns false if the grace period has expired' do
          Timecop.freeze(3.hours.from_now) do
            expect(subject).to be_falsey
          end
        end

        it 'returns true if the grace period is still active' do
          Timecop.freeze(1.hour.from_now) do
            expect(subject).to be_truthy
          end
        end
      end
    end
  end

  context 'terms' do
    controller(described_class) do
      def index
        render text: 'authenticated'
      end
    end

    before do
      stub_env('IN_MEMORY_APPLICATION_SETTINGS', 'false')
      sign_in user
    end

    it 'does not query more when terms are enforced' do
      control = ActiveRecord::QueryRecorder.new { get :index }

      enforce_terms

      expect { get :index }.not_to exceed_query_limit(control)
    end

    context 'when terms are enforced' do
      before do
        enforce_terms
      end

      it 'redirects if the user did not accept the terms'  do
        get :index

        expect(response).to have_gitlab_http_status(302)
      end

      it 'does not redirect when the user accepted terms' do
        accept_terms(user)

        get :index

        expect(response).to have_gitlab_http_status(200)
      end

      context 'for sessionless users' do
        render_views

        before do
          sign_out user
        end

        it 'renders a 403 when the sessionless user did not accept the terms' do
          get :index, feed_token: user.feed_token, format: :atom

          expect(response).to have_gitlab_http_status(403)
        end

        it 'renders the error message when the format was html' do
          get :index,
              private_token: create(:personal_access_token, user: user).token,
              format: :html

          expect(response.body).to have_content /accept the terms of service/i
        end

        it 'renders a 200 when the sessionless user accepted the terms' do
          accept_terms(user)

          get :index, feed_token: user.feed_token, format: :atom

          expect(response).to have_gitlab_http_status(200)
        end
      end
    end
  end

  describe '#append_info_to_payload' do
    controller(described_class) do
      attr_reader :last_payload

      def index
        render text: 'authenticated'
      end

      def append_info_to_payload(payload)
        super

        @last_payload = payload
      end
    end

    it 'does not log errors with a 200 response' do
      get :index

      expect(controller.last_payload.has_key?(:response)).to be_falsey
    end

    context '422 errors' do
      it 'logs a response with a string' do
        response = spy(ActionDispatch::Response, status: 422, body: 'Hello world', content_type: 'application/json', cookies: {})
        allow(controller).to receive(:response).and_return(response)
        get :index

        expect(controller.last_payload[:response]).to eq('Hello world')
      end

      it 'logs a response with an array' do
        body = ['I want', 'my hat back']
        response = spy(ActionDispatch::Response, status: 422, body: body, content_type: 'application/json', cookies: {})
        allow(controller).to receive(:response).and_return(response)
        get :index

        expect(controller.last_payload[:response]).to eq(body)
      end

      it 'does not log a string with an empty body' do
        response = spy(ActionDispatch::Response, status: 422, body: nil, content_type: 'application/json', cookies: {})
        allow(controller).to receive(:response).and_return(response)
        get :index

        expect(controller.last_payload.has_key?(:response)).to be_falsey
      end

      it 'does not log an HTML body' do
        response = spy(ActionDispatch::Response, status: 422, body: 'This is a test', content_type: 'application/html', cookies: {})
        allow(controller).to receive(:response).and_return(response)
        get :index

        expect(controller.last_payload.has_key?(:response)).to be_falsey
      end
    end
  end

  describe '#access_denied' do
    controller(described_class) do
      def index
        access_denied!(params[:message])
      end
    end

    before do
      sign_in user
    end

    it 'renders a 404 without a message' do
      get :index

      expect(response).to have_gitlab_http_status(404)
    end

    it 'renders a 403 when a message is passed to access denied' do
      get :index, message: 'None shall pass'

      expect(response).to have_gitlab_http_status(403)
    end
  end

  context 'control headers' do
    controller(described_class) do
      def index
        render json: :ok
      end
    end

    context 'user not logged in' do
      it 'sets the default headers' do
        get :index

        expect(response.headers['Cache-Control']).to be_nil
      end
    end

    context 'user logged in' do
      it 'sets the default headers' do
        sign_in(user)

        get :index

        expect(response.headers['Cache-Control']).to eq 'max-age=0, private, must-revalidate, no-store'
      end
    end
  end
end