# frozen_string_literal: true

require 'spec_helper'

RSpec.describe JwtController do
  include_context 'parsed logs'

  let(:service) { double(execute: {} ) }
  let(:service_class) { Auth::ContainerRegistryAuthenticationService }
  let(:service_name) { 'container_registry' }
  let(:parameters) { { service: service_name } }

  before do
    allow(service_class).to receive(:new).and_return(service)
  end

  shared_examples 'user logging' do
    it 'logs username and ID' do
      expect(log_data['username']).to eq(user.username)
      expect(log_data['user_id']).to eq(user.id)
      expect(log_data['meta.user']).to eq(user.username)
    end
  end

  context 'authenticating against container registry' do
    context 'existing service' do
      subject! { get '/jwt/auth', params: parameters }

      it { expect(response).to have_gitlab_http_status(:ok) }

      context 'returning custom http code' do
        let(:service) { double(execute: { http_status: 505 }) }

        it { expect(response).to have_gitlab_http_status(:http_version_not_supported) }
      end
    end

    context 'when using authenticated request' do
      shared_examples 'rejecting a blocked user' do
        context 'with blocked user' do
          let(:user) { create(:user, :blocked) }

          it 'rejects the request as unauthorized' do
            expect(response).to have_gitlab_http_status(:unauthorized)
            expect(response.body).to include('HTTP Basic: Access denied')
          end
        end
      end

      context 'using CI token' do
        let(:user) { create(:user) }
        let(:build) { create(:ci_build, :running, user: user) }
        let(:project) { build.project }
        let(:headers) { { authorization: credentials('gitlab-ci-token', build.token) } }

        context 'project with enabled CI' do
          subject! { get '/jwt/auth', params: parameters, headers: headers }

          it { expect(service_class).to have_received(:new).with(project, user, ActionController::Parameters.new(parameters).permit!) }

          it_behaves_like 'user logging'
        end

        context 'project with disabled CI' do
          before do
            project.project_feature.update_attribute(:builds_access_level, ProjectFeature::DISABLED)
          end

          subject! { get '/jwt/auth', params: parameters, headers: headers }

          it { expect(response).to have_gitlab_http_status(:unauthorized) }
        end

        context 'using deploy tokens' do
          let(:deploy_token) { create(:deploy_token, read_registry: true, projects: [project]) }
          let(:headers) { { authorization: credentials(deploy_token.username, deploy_token.token) } }

          subject! { get '/jwt/auth', params: parameters, headers: headers }

          it 'authenticates correctly' do
            expect(response).to have_gitlab_http_status(:ok)
            expect(service_class).to have_received(:new).with(nil, deploy_token, ActionController::Parameters.new(parameters).permit!)
          end

          it 'does not log a user' do
            expect(log_data.keys).not_to include(%w(username user_id))
          end
        end

        context 'using personal access tokens' do
          let(:pat) { create(:personal_access_token, user: user, scopes: ['read_registry']) }
          let(:headers) { { authorization: credentials('personal_access_token', pat.token) } }

          before do
            stub_container_registry_config(enabled: true)
          end

          subject! { get '/jwt/auth', params: parameters, headers: headers }

          it 'authenticates correctly' do
            expect(response).to have_gitlab_http_status(:ok)
            expect(service_class).to have_received(:new).with(nil, user, ActionController::Parameters.new(parameters).permit!)
          end

          it_behaves_like 'rejecting a blocked user'
          it_behaves_like 'user logging'
        end
      end

      context 'using User login' do
        let(:user) { create(:user) }
        let(:headers) { { authorization: credentials(user.username, user.password) } }

        subject! { get '/jwt/auth', params: parameters, headers: headers }

        it { expect(service_class).to have_received(:new).with(nil, user, ActionController::Parameters.new(parameters).permit!) }

        it_behaves_like 'rejecting a blocked user'

        context 'when passing a flat array of scopes' do
          # We use this trick to make rails to generate a query_string:
          # scope=scope1&scope=scope2
          # It works because :scope and 'scope' are the same as string, but different objects
          let(:parameters) do
            {
              :service => service_name,
              :scope => 'scope1',
              'scope' => 'scope2'
            }
          end

          let(:service_parameters) do
            ActionController::Parameters.new({ service: service_name, scopes: %w(scope1 scope2) }).permit!
          end

          it { expect(service_class).to have_received(:new).with(nil, user, service_parameters) }

          it_behaves_like 'user logging'
        end

        context 'when user has 2FA enabled' do
          let(:user) { create(:user, :two_factor) }

          context 'without personal token' do
            it 'rejects the authorization attempt' do
              expect(response).to have_gitlab_http_status(:unauthorized)
              expect(response.body).to include('You must use a personal access token with \'api\' scope for Git over HTTP')
            end
          end

          context 'with personal token' do
            let(:access_token) { create(:personal_access_token, user: user) }
            let(:headers) { { authorization: credentials(user.username, access_token.token) } }

            it 'accepts the authorization attempt' do
              expect(response).to have_gitlab_http_status(:ok)
            end
          end
        end

        it 'does not cause session based checks to be activated' do
          expect(Gitlab::Session).not_to receive(:with_session)

          get '/jwt/auth', params: parameters, headers: headers

          expect(response).to have_gitlab_http_status(:ok)
        end
      end

      context 'using invalid login' do
        let(:headers) { { authorization: credentials('invalid', 'password') } }

        context 'when internal auth is enabled' do
          it 'rejects the authorization attempt' do
            get '/jwt/auth', params: parameters, headers: headers

            expect(response).to have_gitlab_http_status(:unauthorized)
            expect(response.body).not_to include('You must use a personal access token with \'api\' scope for Git over HTTP')
          end
        end

        context 'when internal auth is disabled' do
          it 'rejects the authorization attempt with personal access token message' do
            allow_next_instance_of(ApplicationSetting) do |instance|
              allow(instance).to receive(:password_authentication_enabled_for_git?) { false }
            end
            get '/jwt/auth', params: parameters, headers: headers

            expect(response).to have_gitlab_http_status(:unauthorized)
            expect(response.body).to include('You must use a personal access token with \'api\' scope for Git over HTTP')
          end
        end
      end
    end

    context 'when using unauthenticated request' do
      it 'accepts the authorization attempt' do
        get '/jwt/auth', params: parameters

        expect(response).to have_gitlab_http_status(:ok)
      end

      it 'allows read access' do
        expect(service).to receive(:execute).with(authentication_abilities: Gitlab::Auth.read_only_authentication_abilities)

        get '/jwt/auth', params: parameters
      end
    end

    context 'unknown service' do
      subject! { get '/jwt/auth', params: { service: 'unknown' } }

      it { expect(response).to have_gitlab_http_status(:not_found) }
    end

    def credentials(login, password)
      ActionController::HttpAuthentication::Basic.encode_credentials(login, password)
    end
  end

  context 'authenticating against dependency proxy' do
    let_it_be(:user) { create(:user) }
    let_it_be(:personal_access_token) { create(:personal_access_token, user: user) }
    let_it_be(:group) { create(:group) }
    let_it_be(:project) { create(:project, :private, group: group) }
    let_it_be(:group_deploy_token) { create(:deploy_token, :group, groups: [group]) }
    let_it_be(:project_deploy_token) { create(:deploy_token, :project, projects: [project]) }
    let_it_be(:service_name) { 'dependency_proxy' }
    let(:headers) { { authorization: credentials(credential_user, credential_password) } }
    let(:params) { { account: credential_user, client_id: 'docker', offline_token: true, service: service_name } }

    before do
      stub_config(dependency_proxy: { enabled: true })
    end

    subject { get '/jwt/auth', params: params, headers: headers }

    shared_examples 'with valid credentials' do
      it 'returns token successfully' do
        subject

        expect(response).to have_gitlab_http_status(:success)
        expect(json_response['token']).to be_present
      end
    end

    context 'with personal access token' do
      let(:credential_user) { nil }
      let(:credential_password) { personal_access_token.token }

      it_behaves_like 'with valid credentials'
    end

    context 'with user credentials token' do
      let(:credential_user) { user.username }
      let(:credential_password) { user.password }

      it_behaves_like 'with valid credentials'
    end

    context 'with group deploy token' do
      let(:credential_user) { group_deploy_token.username }
      let(:credential_password) { group_deploy_token.token }

      it_behaves_like 'with valid credentials'
    end

    context 'with project deploy token' do
      let(:credential_user) { project_deploy_token.username }
      let(:credential_password) { project_deploy_token.token }

      it_behaves_like 'with valid credentials'
    end

    context 'with invalid credentials' do
      let(:credential_user) { 'foo' }
      let(:credential_password) { 'bar' }

      it 'returns unauthorized' do
        subject

        expect(response).to have_gitlab_http_status(:unauthorized)
      end
    end
  end

  def credentials(login, password)
    ActionController::HttpAuthentication::Basic.encode_credentials(login, password)
  end
end