require 'spec_helper'

describe 'Git LFS API and storage' do
  include WorkhorseHelpers
  include ProjectForksHelper

  let(:user) { create(:user) }
  let!(:lfs_object) { create(:lfs_object, :with_file) }

  let(:headers) do
    {
      'Authorization' => authorization,
      'X-Sendfile-Type' => sendfile
    }.compact
  end
  let(:authorization) { }
  let(:sendfile) { }
  let(:pipeline) { create(:ci_empty_pipeline, project: project) }

  let(:sample_oid) { lfs_object.oid }
  let(:sample_size) { lfs_object.size }

  describe 'when lfs is disabled' do
    let(:project) { create(:project) }
    let(:body) do
      {
        'objects' => [
          { 'oid' => '91eff75a492a3ed0dfcb544d7f31326bc4014c8551849c192fd1e48d4dd2c897',
            'size' => 1575078 },
          { 'oid' => sample_oid,
            'size' => sample_size }
        ],
        'operation' => 'upload'
      }
    end
    let(:authorization) { authorize_user }

    before do
      allow(Gitlab.config.lfs).to receive(:enabled).and_return(false)
      post_lfs_json "#{project.http_url_to_repo}/info/lfs/objects/batch", body, headers
    end

    it 'responds with 501' do
      expect(response).to have_gitlab_http_status(501)
      expect(json_response).to include('message' => 'Git LFS is not enabled on this GitLab server, contact your admin.')
    end
  end

  context 'project specific LFS settings' do
    let(:project) { create(:project) }
    let(:body) do
      {
        'objects' => [
          { 'oid' => '91eff75a492a3ed0dfcb544d7f31326bc4014c8551849c192fd1e48d4dd2c897',
            'size' => 1575078 },
          { 'oid' => sample_oid,
            'size' => sample_size }
        ],
        'operation' => 'upload'
      }
    end
    let(:authorization) { authorize_user }

    context 'with LFS disabled globally' do
      before do
        project.add_maintainer(user)
        allow(Gitlab.config.lfs).to receive(:enabled).and_return(false)
      end

      describe 'LFS disabled in project' do
        before do
          project.update_attribute(:lfs_enabled, false)
        end

        it 'responds with a 501 message on upload' do
          post_lfs_json "#{project.http_url_to_repo}/info/lfs/objects/batch", body, headers

          expect(response).to have_gitlab_http_status(501)
        end

        it 'responds with a 501 message on download' do
          get "#{project.http_url_to_repo}/gitlab-lfs/objects/#{sample_oid}", params: {}, headers: headers

          expect(response).to have_gitlab_http_status(501)
        end
      end

      describe 'LFS enabled in project' do
        before do
          project.update_attribute(:lfs_enabled, true)
        end

        it 'responds with a 501 message on upload' do
          post_lfs_json "#{project.http_url_to_repo}/info/lfs/objects/batch", body, headers

          expect(response).to have_gitlab_http_status(501)
        end

        it 'responds with a 501 message on download' do
          get "#{project.http_url_to_repo}/gitlab-lfs/objects/#{sample_oid}", params: {}, headers: headers

          expect(response).to have_gitlab_http_status(501)
        end
      end
    end

    context 'with LFS enabled globally' do
      before do
        project.add_maintainer(user)
        enable_lfs
      end

      describe 'LFS disabled in project' do
        before do
          project.update_attribute(:lfs_enabled, false)
        end

        it 'responds with a 403 message on upload' do
          post_lfs_json "#{project.http_url_to_repo}/info/lfs/objects/batch", body, headers

          expect(response).to have_gitlab_http_status(403)
          expect(json_response).to include('message' => 'Access forbidden. Check your access level.')
        end

        it 'responds with a 403 message on download' do
          get "#{project.http_url_to_repo}/gitlab-lfs/objects/#{sample_oid}", params: {}, headers: headers

          expect(response).to have_gitlab_http_status(403)
          expect(json_response).to include('message' => 'Access forbidden. Check your access level.')
        end
      end

      describe 'LFS enabled in project' do
        before do
          project.update_attribute(:lfs_enabled, true)
        end

        it 'responds with a 200 message on upload' do
          post_lfs_json "#{project.http_url_to_repo}/info/lfs/objects/batch", body, headers

          expect(response).to have_gitlab_http_status(200)
          expect(json_response['objects'].first['size']).to eq(1575078)
        end

        it 'responds with a 200 message on download' do
          get "#{project.http_url_to_repo}/gitlab-lfs/objects/#{sample_oid}", params: {}, headers: headers

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

  describe 'deprecated API' do
    let(:project) { create(:project) }

    before do
      enable_lfs
    end

    shared_examples 'a deprecated' do
      it 'responds with 501' do
        expect(response).to have_gitlab_http_status(501)
      end

      it 'returns deprecated message' do
        expect(json_response).to include('message' => 'Server supports batch API only, please update your Git LFS client to version 1.0.1 and up.')
      end
    end

    context 'when fetching lfs object using deprecated API' do
      let(:authorization) { authorize_user }

      before do
        get "#{project.http_url_to_repo}/info/lfs/objects/#{sample_oid}", params: {}, headers: headers
      end

      it_behaves_like 'a deprecated'
    end

    context 'when handling lfs request using deprecated API' do
      let(:authorization) { authorize_user }
      before do
        post_lfs_json "#{project.http_url_to_repo}/info/lfs/objects", nil, headers
      end

      it_behaves_like 'a deprecated'
    end
  end

  describe 'when fetching lfs object' do
    let(:project) { create(:project) }
    let(:update_permissions) { }
    let(:before_get) { }

    before do
      enable_lfs
      update_permissions
      before_get
      get "#{project.http_url_to_repo}/gitlab-lfs/objects/#{sample_oid}", params: {}, headers: headers
    end

    context 'and request comes from gitlab-workhorse' do
      context 'without user being authorized' do
        it 'responds with status 401' do
          expect(response).to have_gitlab_http_status(401)
        end
      end

      context 'with required headers' do
        shared_examples 'responds with a file' do
          let(:sendfile) { 'X-Sendfile' }

          it 'responds with status 200' do
            expect(response).to have_gitlab_http_status(200)
          end

          it 'responds with the file location' do
            expect(response.headers['Content-Type']).to eq('application/octet-stream')
            expect(response.headers['X-Sendfile']).to eq(lfs_object.file.path)
          end
        end

        context 'with user is authorized' do
          let(:authorization) { authorize_user }

          context 'and does not have project access' do
            let(:update_permissions) do
              project.lfs_objects << lfs_object
            end

            it 'responds with status 404' do
              expect(response).to have_gitlab_http_status(404)
            end
          end

          context 'and does have project access' do
            let(:update_permissions) do
              project.add_maintainer(user)
              project.lfs_objects << lfs_object
            end

            it_behaves_like 'responds with a file'

            context 'when LFS uses object storage' do
              context 'when proxy download is enabled' do
                let(:before_get) do
                  stub_lfs_object_storage(proxy_download: true)
                  lfs_object.file.migrate!(LfsObjectUploader::Store::REMOTE)
                end

                it 'responds with redirect' do
                  expect(response).to have_gitlab_http_status(200)
                end

                it 'responds with the workhorse send-url' do
                  expect(response.headers[Gitlab::Workhorse::SEND_DATA_HEADER]).to start_with("send-url:")
                end
              end

              context 'when proxy download is disabled' do
                let(:before_get) do
                  stub_lfs_object_storage(proxy_download: false)
                  lfs_object.file.migrate!(LfsObjectUploader::Store::REMOTE)
                end

                it 'responds with redirect' do
                  expect(response).to have_gitlab_http_status(302)
                end

                it 'responds with the file location' do
                  expect(response.location).to include(lfs_object.reload.file.path)
                end
              end
            end
          end
        end

        context 'when deploy key is authorized' do
          let(:key) { create(:deploy_key) }
          let(:authorization) { authorize_deploy_key }

          let(:update_permissions) do
            project.deploy_keys << key
            project.lfs_objects << lfs_object
          end

          it_behaves_like 'responds with a file'
        end

        describe 'when using a user key' do
          let(:authorization) { authorize_user_key }

          context 'when user allowed' do
            let(:update_permissions) do
              project.add_maintainer(user)
              project.lfs_objects << lfs_object
            end

            it_behaves_like 'responds with a file'
          end

          context 'when user not allowed' do
            let(:update_permissions) do
              project.lfs_objects << lfs_object
            end

            it 'responds with status 404' do
              expect(response).to have_gitlab_http_status(404)
            end
          end
        end

        context 'when build is authorized as' do
          let(:authorization) { authorize_ci_project }

          shared_examples 'can download LFS only from own projects' do
            context 'for owned project' do
              let(:project) { create(:project, namespace: user.namespace) }

              let(:update_permissions) do
                project.lfs_objects << lfs_object
              end

              it_behaves_like 'responds with a file'
            end

            context 'for member of project' do
              let(:pipeline) { create(:ci_empty_pipeline, project: project) }

              let(:update_permissions) do
                project.add_reporter(user)
                project.lfs_objects << lfs_object
              end

              it_behaves_like 'responds with a file'
            end

            context 'for other project' do
              let(:other_project) { create(:project) }
              let(:pipeline) { create(:ci_empty_pipeline, project: other_project) }

              let(:update_permissions) do
                project.lfs_objects << lfs_object
              end

              it 'rejects downloading code' do
                expect(response).to have_gitlab_http_status(other_project_status)
              end
            end
          end

          context 'administrator' do
            let(:user) { create(:admin) }
            let(:build) { create(:ci_build, :running, pipeline: pipeline, user: user) }

            it_behaves_like 'can download LFS only from own projects' do
              # We render 403, because administrator does have normally access
              let(:other_project_status) { 403 }
            end
          end

          context 'regular user' do
            let(:user) { create(:user) }
            let(:build) { create(:ci_build, :running, pipeline: pipeline, user: user) }

            it_behaves_like 'can download LFS only from own projects' do
              # We render 404, to prevent data leakage about existence of the project
              let(:other_project_status) { 404 }
            end
          end

          context 'does not have user' do
            let(:build) { create(:ci_build, :running, pipeline: pipeline) }

            it_behaves_like 'can download LFS only from own projects' do
              # We render 404, to prevent data leakage about existence of the project
              let(:other_project_status) { 404 }
            end
          end
        end
      end

      context 'without required headers' do
        let(:authorization) { authorize_user }

        it 'responds with status 404' do
          expect(response).to have_gitlab_http_status(404)
        end
      end
    end
  end

  describe 'when handling lfs batch request' do
    let(:update_lfs_permissions) { }
    let(:update_user_permissions) { }

    before do
      enable_lfs
      update_lfs_permissions
      update_user_permissions
      post_lfs_json "#{project.http_url_to_repo}/info/lfs/objects/batch", body, headers
    end

    describe 'download' do
      let(:project) { create(:project) }
      let(:body) do
        {
          'operation' => 'download',
          'objects' => [
            { 'oid' => sample_oid,
              'size' => sample_size }
          ]
        }
      end

      shared_examples 'an authorized requests' do
        context 'when downloading an lfs object that is assigned to our project' do
          let(:update_lfs_permissions) do
            project.lfs_objects << lfs_object
          end

          it 'responds with status 200' do
            expect(response).to have_gitlab_http_status(200)
          end

          it 'with href to download' do
            expect(json_response).to eq({
              'objects' => [
                {
                  'oid' => sample_oid,
                  'size' => sample_size,
                  'actions' => {
                    'download' => {
                      'href' => "#{project.http_url_to_repo}/gitlab-lfs/objects/#{sample_oid}",
                      'header' => { 'Authorization' => authorization }
                    }
                  }
                }
              ]
            })
          end
        end

        context 'when downloading an lfs object that is assigned to other project' do
          let(:other_project) { create(:project) }
          let(:update_lfs_permissions) do
            other_project.lfs_objects << lfs_object
          end

          it 'responds with status 200' do
            expect(response).to have_gitlab_http_status(200)
          end

          it 'with href to download' do
            expect(json_response).to eq({
              'objects' => [
                {
                  'oid' => sample_oid,
                  'size' => sample_size,
                  'error' => {
                    'code' => 404,
                    'message' => "Object does not exist on the server or you don't have permissions to access it"
                  }
                }
              ]
            })
          end
        end

        context 'when downloading a lfs object that does not exist' do
          let(:body) do
            {
              'operation' => 'download',
              'objects' => [
                { 'oid' => '91eff75a492a3ed0dfcb544d7f31326bc4014c8551849c192fd1e48d4dd2c897',
                  'size' => 1575078 }
              ]
            }
          end

          it 'responds with status 200' do
            expect(response).to have_gitlab_http_status(200)
          end

          it 'with an 404 for specific object' do
            expect(json_response).to eq({
              'objects' => [
                {
                  'oid' => '91eff75a492a3ed0dfcb544d7f31326bc4014c8551849c192fd1e48d4dd2c897',
                  'size' => 1575078,
                  'error' => {
                    'code' => 404,
                    'message' => "Object does not exist on the server or you don't have permissions to access it"
                  }
                }
              ]
            })
          end
        end

        context 'when downloading one new and one existing lfs object' do
          let(:body) do
            {
              'operation' => 'download',
              'objects' => [
                { 'oid' => '91eff75a492a3ed0dfcb544d7f31326bc4014c8551849c192fd1e48d4dd2c897',
                  'size' => 1575078 },
                { 'oid' => sample_oid,
                  'size' => sample_size }
              ]
            }
          end

          let(:update_lfs_permissions) do
            project.lfs_objects << lfs_object
          end

          it 'responds with status 200' do
            expect(response).to have_gitlab_http_status(200)
          end

          it 'responds with upload hypermedia link for the new object' do
            expect(json_response).to eq({
              'objects' => [
                {
                  'oid' => '91eff75a492a3ed0dfcb544d7f31326bc4014c8551849c192fd1e48d4dd2c897',
                  'size' => 1575078,
                  'error' => {
                    'code' => 404,
                    'message' => "Object does not exist on the server or you don't have permissions to access it"
                  }
                },
                {
                  'oid' => sample_oid,
                  'size' => sample_size,
                  'actions' => {
                    'download' => {
                      'href' => "#{project.http_url_to_repo}/gitlab-lfs/objects/#{sample_oid}",
                      'header' => { 'Authorization' => authorization }
                    }
                  }
                }
              ]
            })
          end
        end
      end

      context 'when user is authenticated' do
        let(:authorization) { authorize_user }

        let(:update_user_permissions) do
          project.add_role(user, role)
        end

        it_behaves_like 'an authorized requests' do
          let(:role) { :reporter }
        end

        context 'when user does is not member of the project' do
          let(:update_user_permissions) { nil }

          it 'responds with 404' do
            expect(response).to have_gitlab_http_status(404)
          end
        end

        context 'when user does not have download access' do
          let(:role) { :guest }

          it 'responds with 403' do
            expect(response).to have_gitlab_http_status(403)
          end
        end
      end

      context 'when using Deploy Tokens' do
        let(:project) { create(:project, :repository) }
        let(:authorization) { authorize_deploy_token }
        let(:update_user_permissions) { nil }
        let(:role) { nil }
        let(:update_lfs_permissions) do
          project.lfs_objects << lfs_object
        end

        context 'when Deploy Token is valid' do
          let(:deploy_token) { create(:deploy_token, projects: [project]) }

          it_behaves_like 'an authorized requests'
        end

        context 'when Deploy Token is not valid' do
          let(:deploy_token) { create(:deploy_token, projects: [project], read_repository: false) }

          it 'responds with access denied' do
            expect(response).to have_gitlab_http_status(401)
          end
        end

        context 'when Deploy Token is not related to the project' do
          let(:another_project) { create(:project, :repository) }
          let(:deploy_token) { create(:deploy_token, projects: [another_project]) }

          it 'responds with access forbidden' do
            # We render 404, to prevent data leakage about existence of the project
            expect(response).to have_gitlab_http_status(404)
          end
        end
      end

      context 'when build is authorized as' do
        let(:authorization) { authorize_ci_project }

        let(:update_lfs_permissions) do
          project.lfs_objects << lfs_object
        end

        shared_examples 'can download LFS only from own projects' do
          context 'for own project' do
            let(:pipeline) { create(:ci_empty_pipeline, project: project) }

            let(:update_user_permissions) do
              project.add_reporter(user)
            end

            it_behaves_like 'an authorized requests'
          end

          context 'for other project' do
            let(:other_project) { create(:project) }
            let(:pipeline) { create(:ci_empty_pipeline, project: other_project) }

            it 'rejects downloading code' do
              expect(response).to have_gitlab_http_status(other_project_status)
            end
          end
        end

        context 'administrator' do
          let(:user) { create(:admin) }
          let(:build) { create(:ci_build, :running, pipeline: pipeline, user: user) }

          it_behaves_like 'can download LFS only from own projects' do
            # We render 403, because administrator does have normally access
            let(:other_project_status) { 403 }
          end
        end

        context 'regular user' do
          let(:user) { create(:user) }
          let(:build) { create(:ci_build, :running, pipeline: pipeline, user: user) }

          it_behaves_like 'can download LFS only from own projects' do
            # We render 404, to prevent data leakage about existence of the project
            let(:other_project_status) { 404 }
          end
        end

        context 'does not have user' do
          let(:build) { create(:ci_build, :running, pipeline: pipeline) }

          it_behaves_like 'can download LFS only from own projects' do
            # We render 404, to prevent data leakage about existence of the project
            let(:other_project_status) { 404 }
          end
        end
      end

      context 'when user is not authenticated' do
        describe 'is accessing public project' do
          let(:project) { create(:project, :public) }

          let(:update_lfs_permissions) do
            project.lfs_objects << lfs_object
          end

          it 'responds with status 200 and href to download' do
            expect(response).to have_gitlab_http_status(200)
          end

          it 'responds with status 200 and href to download' do
            expect(json_response).to eq({
              'objects' => [
                {
                  'oid' => sample_oid,
                  'size' => sample_size,
                  'authenticated' => true,
                  'actions' => {
                    'download' => {
                      'href' => "#{project.http_url_to_repo}/gitlab-lfs/objects/#{sample_oid}",
                      'header' => {}
                    }
                  }
                }
              ]
            })
          end
        end

        describe 'is accessing non-public project' do
          let(:update_lfs_permissions) do
            project.lfs_objects << lfs_object
          end

          it 'responds with authorization required' do
            expect(response).to have_gitlab_http_status(401)
          end
        end
      end
    end

    describe 'upload' do
      let(:project) { create(:project, :public) }
      let(:body) do
        {
          'operation' => 'upload',
          'objects' => [
            { 'oid' => sample_oid,
              'size' => sample_size }
          ]
        }
      end

      shared_examples 'pushes new LFS objects' do
        let(:sample_size) { 150.megabytes }
        let(:sample_oid) { '91eff75a492a3ed0dfcb544d7f31326bc4014c8551849c192fd1e48d4dd2c897' }

        it 'responds with upload hypermedia link' do
          expect(response).to have_gitlab_http_status(200)
          expect(json_response['objects']).to be_kind_of(Array)
          expect(json_response['objects'].first['oid']).to eq(sample_oid)
          expect(json_response['objects'].first['size']).to eq(sample_size)
          expect(json_response['objects'].first['actions']['upload']['href']).to eq("#{Gitlab.config.gitlab.url}/#{project.full_path}.git/gitlab-lfs/objects/#{sample_oid}/#{sample_size}")
          expect(json_response['objects'].first['actions']['upload']['header']).to eq({ 'Authorization' => authorization, 'Content-Type' => 'application/octet-stream' })
        end

        ## EE-specific context
        context 'and project is above the limit' do
          let(:update_lfs_permissions) do
            allow_any_instance_of(EE::Project).to receive_messages(
              repository_and_lfs_size: 100.megabytes,
              actual_size_limit: 99.megabytes)
          end

          it 'responds with status 406' do
            expect(response).to have_gitlab_http_status(406)
            expect(json_response['message']).to eql('Your push has been rejected, because this repository has exceeded its size limit of 99 MB by 1 MB. Please contact your GitLab administrator for more information.')
          end
        end

        context 'and project will go over the limit' do
          let(:update_lfs_permissions) do
            allow_any_instance_of(EE::Project).to receive_messages(
              repository_and_lfs_size: 200.megabytes,
              actual_size_limit: 300.megabytes)
          end

          it 'responds with status 406' do
            expect(response).to have_gitlab_http_status(406)
            expect(json_response['documentation_url']).to include('/help')
            expect(json_response['message']).to eql('Your push has been rejected, because this repository has exceeded its size limit of 300 MB by 50 MB. Please contact your GitLab administrator for more information.')
          end
        end
      end

      describe 'when request is authenticated' do
        describe 'when user has project push access' do
          let(:authorization) { authorize_user }

          let(:update_user_permissions) do
            project.add_developer(user)
          end

          context 'when pushing an lfs object that already exists' do
            let(:other_project) { create(:project) }
            let(:update_lfs_permissions) do
              other_project.lfs_objects << lfs_object
            end

            it 'responds with status 200' do
              expect(response).to have_gitlab_http_status(200)
            end

            it 'responds with links the object to the project' do
              expect(json_response['objects']).to be_kind_of(Array)
              expect(json_response['objects'].first['oid']).to eq(sample_oid)
              expect(json_response['objects'].first['size']).to eq(sample_size)
              expect(lfs_object.projects.pluck(:id)).not_to include(project.id)
              expect(lfs_object.projects.pluck(:id)).to include(other_project.id)
              expect(json_response['objects'].first['actions']['upload']['href']).to eq("#{project.http_url_to_repo}/gitlab-lfs/objects/#{sample_oid}/#{sample_size}")
              expect(json_response['objects'].first['actions']['upload']['header']).to eq({ 'Authorization' => authorization, 'Content-Type' => 'application/octet-stream' })
            end
          end

          context 'when pushing a lfs object that does not exist' do
            it_behaves_like 'pushes new LFS objects'
          end

          context 'when pushing one new and one existing lfs object' do
            let(:body) do
              {
                'operation' => 'upload',
                'objects' => [
                  { 'oid' => '91eff75a492a3ed0dfcb544d7f31326bc4014c8551849c192fd1e48d4dd2c897',
                    'size' => 1575078 },
                  { 'oid' => sample_oid,
                    'size' => sample_size }
                ]
              }
            end

            let(:update_lfs_permissions) do
              project.lfs_objects << lfs_object
            end

            it 'responds with status 200' do
              expect(response).to have_gitlab_http_status(200)
            end

            it 'responds with upload hypermedia link for the new object' do
              expect(json_response['objects']).to be_kind_of(Array)

              expect(json_response['objects'].first['oid']).to eq("91eff75a492a3ed0dfcb544d7f31326bc4014c8551849c192fd1e48d4dd2c897")
              expect(json_response['objects'].first['size']).to eq(1575078)
              expect(json_response['objects'].first['actions']['upload']['href']).to eq("#{project.http_url_to_repo}/gitlab-lfs/objects/91eff75a492a3ed0dfcb544d7f31326bc4014c8551849c192fd1e48d4dd2c897/1575078")
              expect(json_response['objects'].first['actions']['upload']['header']).to eq({ 'Authorization' => authorization, 'Content-Type' => 'application/octet-stream' })

              expect(json_response['objects'].last['oid']).to eq(sample_oid)
              expect(json_response['objects'].last['size']).to eq(sample_size)
              expect(json_response['objects'].last).not_to have_key('actions')
            end
          end
        end

        context 'when user does not have push access' do
          let(:authorization) { authorize_user }

          it 'responds with 403' do
            expect(response).to have_gitlab_http_status(403)
          end
        end

        context 'when build is authorized' do
          let(:authorization) { authorize_ci_project }

          context 'build has an user' do
            let(:user) { create(:user) }

            context 'tries to push to own project' do
              let(:build) { create(:ci_build, :running, pipeline: pipeline, user: user) }

              it 'responds with 403 (not 404 because project is public)' do
                expect(response).to have_gitlab_http_status(403)
              end
            end

            context 'tries to push to other project' do
              let(:other_project) { create(:project) }
              let(:pipeline) { create(:ci_empty_pipeline, project: other_project) }
              let(:build) { create(:ci_build, :running, pipeline: pipeline, user: user) }

              # I'm not sure what this tests that is different from the previous test
              it 'responds with 403 (not 404 because project is public)' do
                expect(response).to have_gitlab_http_status(403)
              end
            end
          end

          context 'does not have user' do
            let(:build) { create(:ci_build, :running, pipeline: pipeline) }

            it 'responds with 403 (not 404 because project is public)' do
              expect(response).to have_gitlab_http_status(403)
            end
          end
        end

        context 'when deploy key has project push access' do
          let(:key) { create(:deploy_key) }
          let(:authorization) { authorize_deploy_key }

          let(:update_user_permissions) do
            project.deploy_keys_projects.create(deploy_key: key, can_push: true)
          end

          it_behaves_like 'pushes new LFS objects'
        end
      end

      context 'when user is not authenticated' do
        context 'when user has push access' do
          let(:update_user_permissions) do
            project.add_maintainer(user)
          end

          it 'responds with status 401' do
            expect(response).to have_gitlab_http_status(401)
          end
        end

        context 'when user does not have push access' do
          it 'responds with status 401' do
            expect(response).to have_gitlab_http_status(401)
          end
        end
      end
    end

    describe 'unsupported' do
      let(:project) { create(:project) }
      let(:authorization) { authorize_user }
      let(:body) do
        {
          'operation' => 'other',
          'objects' => [
            { 'oid' => sample_oid,
              'size' => sample_size }
          ]
        }
      end

      it 'responds with status 404' do
        expect(response).to have_gitlab_http_status(404)
      end
    end
  end

  describe 'when handling lfs batch request on a read-only GitLab instance' do
    let(:authorization) { authorize_user }
    let(:project) { create(:project) }
    let(:path) { "#{project.http_url_to_repo}/info/lfs/objects/batch" }
    let(:body) do
      { 'objects' => [{ 'oid' => sample_oid, 'size' => sample_size }] }
    end

    before do
      allow(Gitlab::Database).to receive(:read_only?) { true }
      project.add_maintainer(user)
      enable_lfs
    end

    it 'responds with a 200 message on download' do
      post_lfs_json path, body.merge('operation' => 'download'), headers

      expect(response).to have_gitlab_http_status(200)
    end

    it 'responds with a 403 message on upload' do
      post_lfs_json path, body.merge('operation' => 'upload'), headers

      expect(response).to have_gitlab_http_status(403)
      expect(json_response).to include('message' => 'You cannot write to this read-only GitLab instance.')
    end
  end

  describe 'when pushing a lfs object' do
    before do
      enable_lfs
    end

    shared_examples 'unauthorized' do
      context 'and request is sent by gitlab-workhorse to authorize the request' do
        before do
          put_authorize
        end

        it 'responds with status 401' do
          expect(response).to have_gitlab_http_status(401)
        end
      end

      context 'and request is sent by gitlab-workhorse to finalize the upload' do
        before do
          put_finalize
        end

        it 'responds with status 401' do
          expect(response).to have_gitlab_http_status(401)
        end
      end

      context 'and request is sent with a malformed headers' do
        before do
          put_finalize('/etc/passwd')
        end

        it 'does not recognize it as a valid lfs command' do
          expect(response).to have_gitlab_http_status(401)
        end
      end
    end

    shared_examples 'forbidden' do
      context 'and request is sent by gitlab-workhorse to authorize the request' do
        before do
          put_authorize
        end

        it 'responds with 403' do
          expect(response).to have_gitlab_http_status(403)
        end
      end

      context 'and request is sent by gitlab-workhorse to finalize the upload' do
        before do
          put_finalize
        end

        it 'responds with 403' do
          expect(response).to have_gitlab_http_status(403)
        end
      end

      context 'and request is sent with a malformed headers' do
        before do
          put_finalize('/etc/passwd')
        end

        it 'does not recognize it as a valid lfs command' do
          expect(response).to have_gitlab_http_status(403)
        end
      end
    end

    describe 'to one project' do
      let(:project) { create(:project) }

      describe 'when user is authenticated' do
        let(:authorization) { authorize_user }

        describe 'when user has push access to the project' do
          before do
            project.add_developer(user)
          end

          context 'and the request bypassed workhorse' do
            it 'raises an exception' do
              expect { put_authorize(verified: false) }.to raise_error JWT::DecodeError
            end
          end

          context 'and request is sent by gitlab-workhorse to authorize the request' do
            shared_examples 'a valid response' do
              before do
                put_authorize
              end

              it 'responds with status 200' do
                expect(response).to have_gitlab_http_status(200)
              end

              it 'uses the gitlab-workhorse content type' do
                expect(response.content_type.to_s).to eq(Gitlab::Workhorse::INTERNAL_API_CONTENT_TYPE)
              end
            end

            shared_examples 'a local file' do
              it_behaves_like 'a valid response' do
                it 'responds with status 200, location of lfs store and object details' do
                  expect(json_response['TempPath']).to eq(LfsObjectUploader.workhorse_local_upload_path)
                  expect(json_response['RemoteObject']).to be_nil
                  expect(json_response['LfsOid']).to eq(sample_oid)
                  expect(json_response['LfsSize']).to eq(sample_size)
                end
              end
            end

            context 'when using local storage' do
              it_behaves_like 'a local file'
            end

            context 'when using remote storage' do
              context 'when direct upload is enabled' do
                before do
                  stub_lfs_object_storage(enabled: true, direct_upload: true)
                end

                it_behaves_like 'a valid response' do
                  it 'responds with status 200, location of lfs remote store and object details' do
                    expect(json_response['TempPath']).to eq(LfsObjectUploader.workhorse_local_upload_path)
                    expect(json_response['RemoteObject']).to have_key('ID')
                    expect(json_response['RemoteObject']).to have_key('GetURL')
                    expect(json_response['RemoteObject']).to have_key('StoreURL')
                    expect(json_response['RemoteObject']).to have_key('DeleteURL')
                    expect(json_response['RemoteObject']).not_to have_key('MultipartUpload')
                    expect(json_response['LfsOid']).to eq(sample_oid)
                    expect(json_response['LfsSize']).to eq(sample_size)
                  end
                end
              end

              context 'when direct upload is disabled' do
                before do
                  stub_lfs_object_storage(enabled: true, direct_upload: false)
                end

                it_behaves_like 'a local file'
              end
            end
          end

          context 'and request is sent by gitlab-workhorse to finalize the upload' do
            before do
              put_finalize
            end

            it 'responds with status 200' do
              expect(response).to have_gitlab_http_status(200)
            end

            it 'lfs object is linked to the project' do
              expect(lfs_object.projects.pluck(:id)).to include(project.id)
            end
          end

          context 'and workhorse requests upload finalize for a new lfs object' do
            before do
              lfs_object.destroy
            end

            context 'with object storage disabled' do
              it "doesn't attempt to migrate file to object storage" do
                expect(ObjectStorage::BackgroundMoveWorker).not_to receive(:perform_async)

                put_finalize(with_tempfile: true)
              end
            end

            context 'with object storage enabled' do
              context 'and direct upload enabled' do
                let!(:fog_connection) do
                  stub_lfs_object_storage(direct_upload: true)
                end

                ['123123', '../../123123'].each do |remote_id|
                  context "with invalid remote_id: #{remote_id}" do
                    subject do
                      put_finalize(with_tempfile: true, args: {
                        'file.remote_id' => remote_id
                      })
                    end

                    it 'responds with status 403' do
                      subject

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

                context 'with valid remote_id' do
                  before do
                    fog_connection.directories.new(key: 'lfs-objects').files.create(
                      key: 'tmp/uploads/12312300',
                      body: 'content'
                    )
                  end

                  subject do
                    put_finalize(with_tempfile: true, args: {
                      'file.remote_id' => '12312300',
                      'file.name' => 'name'
                    })
                  end

                  it 'responds with status 200' do
                    subject

                    expect(response).to have_gitlab_http_status(200)
                  end

                  it 'schedules migration of file to object storage' do
                    subject

                    expect(LfsObject.last.projects).to include(project)
                  end

                  it 'have valid file' do
                    subject

                    expect(LfsObject.last.file_store).to eq(ObjectStorage::Store::REMOTE)
                    expect(LfsObject.last.file).to be_exists
                  end
                end
              end

              context 'and background upload enabled' do
                before do
                  stub_lfs_object_storage(background_upload: true)
                end

                it 'schedules migration of file to object storage' do
                  expect(ObjectStorage::BackgroundMoveWorker).to receive(:perform_async).with('LfsObjectUploader', 'LfsObject', :file, kind_of(Numeric))

                  put_finalize(with_tempfile: true)
                end
              end
            end
          end

          context 'and project has limit enabled but will stay under the limit' do
            before do
              allow_any_instance_of(EE::Project).to receive_messages(
                actual_size_limit: 200,
                size_limit_enabled?: true)

              put_finalize
            end

            it 'responds with status 200' do
              expect(response).to have_gitlab_http_status(200)
            end
          end

          context 'invalid tempfiles' do
            before do
              lfs_object.destroy
            end

            it 'rejects slashes in the tempfile name (path traversal)' do
              put_finalize('../bar', with_tempfile: true)
              expect(response).to have_gitlab_http_status(403)
            end
          end
        end

        describe 'and user does not have push access' do
          before do
            project.add_reporter(user)
          end

          it_behaves_like 'forbidden'
        end
      end

      context 'when build is authorized' do
        let(:authorization) { authorize_ci_project }

        context 'build has an user' do
          let(:user) { create(:user) }

          context 'tries to push to own project' do
            let(:build) { create(:ci_build, :running, pipeline: pipeline, user: user) }

            before do
              project.add_developer(user)
              put_authorize
            end

            it 'responds with 403 (not 404 because the build user can read the project)' do
              expect(response).to have_gitlab_http_status(403)
            end
          end

          context 'tries to push to other project' do
            let(:other_project) { create(:project) }
            let(:pipeline) { create(:ci_empty_pipeline, project: other_project) }
            let(:build) { create(:ci_build, :running, pipeline: pipeline, user: user) }

            before do
              put_authorize
            end

            it 'responds with 404 (do not leak non-public project existence)' do
              expect(response).to have_gitlab_http_status(404)
            end
          end
        end

        context 'does not have user' do
          let(:build) { create(:ci_build, :running, pipeline: pipeline) }

          before do
            put_authorize
          end

          it 'responds with 404 (do not leak non-public project existence)' do
            expect(response).to have_gitlab_http_status(404)
          end
        end
      end

      context 'for unauthenticated' do
        it_behaves_like 'unauthorized'
      end
    end

    describe 'to a forked project' do
      let(:upstream_project) { create(:project, :public) }
      let(:project_owner) { create(:user) }
      let(:project) { fork_project(upstream_project, project_owner) }

      describe 'when user is authenticated' do
        let(:authorization) { authorize_user }

        describe 'when user has push access to the project' do
          before do
            project.add_developer(user)
          end

          context 'and request is sent by gitlab-workhorse to authorize the request' do
            before do
              put_authorize
            end

            it 'responds with status 200' do
              expect(response).to have_gitlab_http_status(200)
            end

            it 'with location of lfs store and object details' do
              expect(json_response['TempPath']).to eq(LfsObjectUploader.workhorse_local_upload_path)
              expect(json_response['LfsOid']).to eq(sample_oid)
              expect(json_response['LfsSize']).to eq(sample_size)
            end
          end

          context 'and request is sent by gitlab-workhorse to finalize the upload' do
            before do
              put_finalize
            end

            it 'responds with status 200' do
              expect(response).to have_gitlab_http_status(200)
            end

            it 'lfs object is linked to the source project' do
              expect(lfs_object.projects.pluck(:id)).to include(upstream_project.id)
            end
          end
        end

        describe 'and user does not have push access' do
          it_behaves_like 'forbidden'
        end
      end

      context 'when build is authorized' do
        let(:authorization) { authorize_ci_project }

        before do
          put_authorize
        end

        context 'build has an user' do
          let(:user) { create(:user) }

          context 'tries to push to own project' do
            let(:build) { create(:ci_build, :running, pipeline: pipeline, user: user) }

            it 'responds with 403 (not 404 because project is public)' do
              expect(response).to have_gitlab_http_status(403)
            end
          end

          context 'tries to push to other project' do
            let(:other_project) { create(:project) }
            let(:pipeline) { create(:ci_empty_pipeline, project: other_project) }
            let(:build) { create(:ci_build, :running, pipeline: pipeline, user: user) }

            # I'm not sure what this tests that is different from the previous test
            it 'responds with 403 (not 404 because project is public)' do
              expect(response).to have_gitlab_http_status(403)
            end
          end
        end

        context 'does not have user' do
          let(:build) { create(:ci_build, :running, pipeline: pipeline) }

          it 'responds with 403 (not 404 because project is public)' do
            expect(response).to have_gitlab_http_status(403)
          end
        end
      end

      context 'for unauthenticated' do
        it_behaves_like 'unauthorized'
      end

      describe 'and second project not related to fork or a source project' do
        let(:second_project) { create(:project) }
        let(:authorization) { authorize_user }

        before do
          second_project.add_maintainer(user)
          upstream_project.lfs_objects << lfs_object
        end

        context 'when pushing the same lfs object to the second project' do
          before do
            put "#{second_project.http_url_to_repo}/gitlab-lfs/objects/#{sample_oid}/#{sample_size}",
                params: {},
                headers: headers.merge('X-Gitlab-Lfs-Tmp' => lfs_tmp_file).compact
          end

          it 'responds with status 200' do
            expect(response).to have_gitlab_http_status(200)
          end

          it 'links the lfs object to the project' do
            expect(lfs_object.projects.pluck(:id)).to include(second_project.id, upstream_project.id)
          end
        end
      end
    end

    def put_authorize(verified: true)
      authorize_headers = headers
      authorize_headers.merge!(workhorse_internal_api_request_header) if verified

      put "#{project.http_url_to_repo}/gitlab-lfs/objects/#{sample_oid}/#{sample_size}/authorize", params: {}, headers: authorize_headers
    end

    def put_finalize(lfs_tmp = lfs_tmp_file, with_tempfile: false, args: {})
      upload_path = LfsObjectUploader.workhorse_local_upload_path
      file_path = upload_path + '/' + lfs_tmp if lfs_tmp

      if with_tempfile
        FileUtils.mkdir_p(upload_path)
        FileUtils.touch(file_path)
      end

      extra_args = {
        'file.path' => file_path,
        'file.name' => File.basename(file_path)
      }

      put_finalize_with_args(args.merge(extra_args).compact)
    end

    def put_finalize_with_args(args)
      put "#{project.http_url_to_repo}/gitlab-lfs/objects/#{sample_oid}/#{sample_size}", params: args, headers: headers
    end

    def lfs_tmp_file
      "#{sample_oid}012345678"
    end
  end

  def enable_lfs
    allow(Gitlab.config.lfs).to receive(:enabled).and_return(true)
  end

  def authorize_ci_project
    ActionController::HttpAuthentication::Basic.encode_credentials('gitlab-ci-token', build.token)
  end

  def authorize_user
    ActionController::HttpAuthentication::Basic.encode_credentials(user.username, user.password)
  end

  def authorize_deploy_key
    ActionController::HttpAuthentication::Basic.encode_credentials("lfs+deploy-key-#{key.id}", Gitlab::LfsToken.new(key).token)
  end

  def authorize_user_key
    ActionController::HttpAuthentication::Basic.encode_credentials(user.username, Gitlab::LfsToken.new(user).token)
  end

  def authorize_deploy_token
    ActionController::HttpAuthentication::Basic.encode_credentials(deploy_token.username, deploy_token.token)
  end

  def post_lfs_json(url, body = nil, headers = nil)
    params = body.try(:to_json)
    headers = (headers || {}).merge('Content-Type' => LfsRequest::CONTENT_TYPE)

    post(url, params: params, headers: headers)
  end

  def json_response
    @json_response ||= JSON.parse(response.body)
  end
end