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}", nil, 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}", nil, 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}", nil, 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}", nil, 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}", nil, 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}", nil, 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
      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 request to finalize the upload is not sent by gitlab-workhorse' do
            it 'fails with a JWT decode error' do
              expect { put_finalize(lfs_tmp_file, verified: false) }.to raise_error(JWT::DecodeError)
            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.get('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 '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
            finalize_headers = headers
              .merge('X-Gitlab-Lfs-Tmp' => lfs_tmp_file)
              .merge(workhorse_internal_api_request_header)

            put "#{second_project.http_url_to_repo}/gitlab-lfs/objects/#{sample_oid}/#{sample_size}",
              nil, finalize_headers
          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", nil, authorize_headers
    end

    def put_finalize(lfs_tmp = lfs_tmp_file, with_tempfile: false, verified: true, 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, verified: verified)
    end

    def put_finalize_with_args(args, verified:)
      finalize_headers = headers
      finalize_headers.merge!(workhorse_internal_api_request_header) if verified

      put "#{project.http_url_to_repo}/gitlab-lfs/objects/#{sample_oid}/#{sample_size}", args, finalize_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)
    post(url, body.try(:to_json), (headers || {}).merge('Content-Type' => LfsRequest::CONTENT_TYPE))
  end

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