Allow maintainers to toggle write permission for public deploy keys

app/controllers/projects/deploy_keys_controller.rb

@@ -73,6 +73,10 @@ class Projects::DeployKeysController < Projects::ApplicationController
     @deploy_key ||= DeployKey.find(params[:id])
   end
 
+  def deploy_keys_project
+    @deploy_keys_project ||= deploy_key.deploy_keys_project_for(@project)
+  end
+
   def create_params
     create_params = params.require(:deploy_key)
                           .permit(:key, :title, deploy_keys_projects_attributes: [:can_push])
@@ -81,10 +85,16 @@ class Projects::DeployKeysController < Projects::ApplicationController
   end
 
   def update_params
-    params.require(:deploy_key).permit(:title, deploy_keys_projects_attributes: [:id, :can_push])
+    permitted_params = [deploy_keys_projects_attributes: [:id, :can_push]]
+    permitted_params << :title if can?(current_user, :update_deploy_key, deploy_key)
+
+    params.require(:deploy_key).permit(*permitted_params)
   end
 
   def authorize_update_deploy_key!
-    access_denied! unless can?(current_user, :update_deploy_key, deploy_key)
+    if !can?(current_user, :update_deploy_key, deploy_key) &&
+        !can?(current_user, :update_deploy_keys_project, deploy_keys_project)
+      access_denied!
+    end
   end
 end

app/policies/deploy_keys_project_policy.rb

+# frozen_string_literal: true
+
+class DeployKeysProjectPolicy < BasePolicy
+  delegate { @subject.project }
+
+  with_options scope: :subject, score: 0
+  condition(:public_deploy_key) { @subject.deploy_key.public? }
+
+  rule { public_deploy_key & can?(:admin_project) }.enable :update_deploy_keys_project
+end

app/presenters/projects/settings/deploy_keys_presenter.rb

@@ -40,7 +40,7 @@ module Projects
 
       def as_json
         serializer = DeployKeySerializer.new # rubocop: disable CodeReuse/Serializer
-        opts = { user: current_user }
+        opts = { user: current_user, project: project }
 
         {
           enabled_keys: serializer.represent(enabled_keys.with_projects, opts),

app/serializers/deploy_key_entity.rb

@@ -20,6 +20,7 @@ class DeployKeyEntity < Grape::Entity
   private
 
   def can_edit
-    Ability.allowed?(options[:user], :update_deploy_key, object)
+    Ability.allowed?(options[:user], :update_deploy_key, object) ||
+      Ability.allowed?(options[:user], :update_deploy_keys_project, object.deploy_keys_project_for(options[:project]))
   end
 end

app/views/shared/deploy_keys/_form.html.haml

@@ -6,7 +6,7 @@
 
 .form-group
   = form.label :title, class: 'col-form-label col-sm-2'
-  .col-sm-10= form.text_field :title, class: 'form-control'
+  .col-sm-10= form.text_field :title, class: 'form-control', readonly: ('readonly' unless can?(current_user, :update_deploy_key, deploy_key))
 
 .form-group
   - if deploy_key.new_record?

changelogs/unreleased/23079-write-permission-global-deploy-keys.yml

+---
+title: Allow maintainers to toggle write permission for public deploy keys
+merge_request: 17210
+author:
+type: fixed

lib/api/deploy_keys.rb

@@ -115,14 +115,20 @@ module API
       put ":id/deploy_keys/:key_id" do
         deploy_keys_project = find_by_deploy_key(user_project, params[:key_id])
 
-        authorize!(:update_deploy_key, deploy_keys_project.deploy_key)
+        if !can?(current_user, :update_deploy_key, deploy_keys_project.deploy_key) &&
+            !can?(current_user, :update_deploy_keys_project, deploy_keys_project)
+          forbidden!(nil)
+        end
+
+        update_params = {}
+        update_params[:can_push] = params[:can_push] if params.key?(:can_push)
+        update_params[:deploy_key_attributes] = { id: params[:key_id] }
 
-        can_push = params[:can_push].nil? ? deploy_keys_project.can_push : params[:can_push]
-        title = params[:title] || deploy_keys_project.deploy_key.title
+        if can?(current_user, :update_deploy_key, deploy_keys_project.deploy_key)
+          update_params[:deploy_key_attributes][:title] = params[:title] if params.key?(:title)
+        end
 
-        result = deploy_keys_project.update(can_push: can_push,
-                                            deploy_key_attributes: { id: params[:key_id],
-                                                                     title: title })
+        result = deploy_keys_project.update(update_params)
 
         if result
           present deploy_keys_project, with: Entities::DeployKeysProject

spec/controllers/projects/deploy_keys_controller_spec.rb

@@ -5,6 +5,7 @@ require 'spec_helper'
 describe Projects::DeployKeysController do
   let(:project) { create(:project, :repository) }
   let(:user) { create(:user) }
+  let(:admin) { create(:admin) }
 
   before do
     project.add_maintainer(user)
@@ -37,7 +38,7 @@ describe Projects::DeployKeysController do
         create(:deploy_keys_project, project: project2, deploy_key: deploy_key_internal)
       end
 
-      let!(:deploy_keys_actual_project) do
+      let!(:deploy_keys_project_actual) do
         create(:deploy_keys_project, project: project, deploy_key: deploy_key_actual)
       end
 
@@ -154,7 +155,7 @@ describe Projects::DeployKeysController do
 
     context 'with admin' do
       before do
-        sign_in(create(:admin))
+        sign_in(admin)
       end
 
       it 'returns 302' do
@@ -219,7 +220,7 @@ describe Projects::DeployKeysController do
 
     context 'with admin' do
       before do
-        sign_in(create(:admin))
+        sign_in(admin)
       end
 
       it 'returns 302' do
@@ -234,4 +235,80 @@ describe Projects::DeployKeysController do
       end
     end
   end
+
+  describe 'PUT update' do
+    let(:extra_params) { {} }
+
+    subject do
+      put :update, params: extra_params.reverse_merge(id: deploy_key.id,
+                                                      namespace_id: project.namespace,
+                                                      project_id: project)
+    end
+
+    def deploy_key_params(title, can_push)
+      deploy_keys_projects_attributes = { '0' => { id: deploy_keys_project, can_push: can_push } }
+      { deploy_key: { title: title, deploy_keys_projects_attributes: deploy_keys_projects_attributes } }
+    end
+
+    let(:deploy_key) { create(:deploy_key, public: true) }
+    let(:project) { create(:project) }
+    let!(:deploy_keys_project) do
+      create(:deploy_keys_project, project: project, deploy_key: deploy_key)
+    end
+
+    context 'with project maintainer' do
+      before do
+        project.add_maintainer(user)
+      end
+
+      context 'public deploy key attached to project' do
+        let(:extra_params) { deploy_key_params('updated title', '1') }
+
+        it 'does not update the title of the deploy key' do
+          expect { subject }.not_to change { deploy_key.reload.title }
+        end
+
+        it 'updates can_push of deploy_keys_project' do
+          expect { subject }.to change { deploy_keys_project.reload.can_push }.from(false).to(true)
+        end
+      end
+    end
+
+    context 'with admin' do
+      before do
+        sign_in(admin)
+      end
+
+      context 'public deploy key attached to project' do
+        let(:extra_params) { deploy_key_params('updated title', '1') }
+
+        it 'updates the title of the deploy key' do
+          expect { subject }.to change { deploy_key.reload.title }.to('updated title')
+        end
+
+        it 'updates can_push of deploy_keys_project' do
+          expect { subject }.to change { deploy_keys_project.reload.can_push }.from(false).to(true)
+        end
+      end
+    end
+
+    context 'with admin as project maintainer' do
+      before do
+        sign_in(admin)
+        project.add_maintainer(admin)
+      end
+
+      context 'public deploy key attached to project' do
+        let(:extra_params) { deploy_key_params('updated title', '1') }
+
+        it 'updates the title of the deploy key' do
+          expect { subject }.to change { deploy_key.reload.title }.to('updated title')
+        end
+
+        it 'updates can_push of deploy_keys_project' do
+          expect { subject }.to change { deploy_keys_project.reload.can_push }.from(false).to(true)
+        end
+      end
+    end
+  end
 end

spec/features/projects/settings/repository_settings_spec.rb

@@ -66,6 +66,19 @@ describe 'Projects > Settings > Repository settings' do
         expect(page).to have_content('Write access allowed')
       end
 
+      it 'edit an existing public deploy key to be writable' do
+        project.deploy_keys << public_deploy_key
+        visit project_settings_repository_path(project)
+
+        find('.deploy-key', text: public_deploy_key.title).find('.ic-pencil').click
+
+        check 'deploy_key_deploy_keys_projects_attributes_0_can_push'
+        click_button 'Save changes'
+
+        expect(page).to have_content('public_deploy_key')
+        expect(page).to have_content('Write access allowed')
+      end
+
       it 'edit a deploy key from projects user has access to' do
         project2 = create(:project_empty_repo)
         project2.add_role(user, role)

spec/policies/deploy_keys_project_policy_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe DeployKeysProjectPolicy do
+  subject { described_class.new(current_user, deploy_key.deploy_keys_project_for(project)) }
+
+  describe 'updating a deploy_keys_project' do
+    context 'when a project maintainer' do
+      let(:current_user) { create(:user) }
+
+      context 'tries to update private deploy key attached to project' do
+        let(:deploy_key) { create(:deploy_key, public: false) }
+        let(:project) { create(:project_empty_repo) }
+
+        before do
+          project.add_maintainer(current_user)
+          project.deploy_keys << deploy_key
+        end
+
+        it { is_expected.to be_disallowed(:update_deploy_keys_project) }
+      end
+
+      context 'tries to update public deploy key attached to project' do
+        let(:deploy_key) { create(:deploy_key, public: true) }
+        let(:project) { create(:project_empty_repo) }
+
+        before do
+          project.add_maintainer(current_user)
+          project.deploy_keys << deploy_key
+        end
+
+        it { is_expected.to be_allowed(:update_deploy_keys_project) }
+      end
+    end
+
+    context 'when a non-maintainer project member' do
+      let(:current_user) { create(:user) }
+      let(:project) { create(:project_empty_repo) }
+
+      before do
+        project.add_developer(current_user)
+        project.deploy_keys << deploy_key
+      end
+
+      context 'tries to update private deploy key attached to project' do
+        let(:deploy_key) { create(:deploy_key, public: false) }
+
+        it { is_expected.to be_disallowed(:update_deploy_keys_project) }
+      end
+
+      context 'tries to update public deploy key attached to project' do
+        let(:deploy_key) { create(:deploy_key, public: true) }
+
+        it { is_expected.to be_disallowed(:update_deploy_keys_project) }
+      end
+    end
+
+    context 'when a user is not a project member' do
+      let(:current_user) { create(:user) }
+      let(:project) { create(:project_empty_repo) }
+      let(:deploy_key) { create(:deploy_key, public: true) }
+
+      before do
+        project.deploy_keys << deploy_key
+      end
+
+      context 'tries to update public deploy key attached to project' do
+        it { is_expected.to be_disallowed(:update_deploy_keys_project) }
+      end
+    end
+  end
+end

spec/requests/api/deploy_keys_spec.rb

@@ -2,6 +2,7 @@ require 'spec_helper'
 
 describe API::DeployKeys do
   let(:user)        { create(:user) }
+  let(:maintainer)  { create(:user) }
   let(:admin)       { create(:admin) }
   let(:project)     { create(:project, creator_id: user.id) }
   let(:project2)    { create(:project, creator_id: user.id) }
@@ -124,45 +125,109 @@ describe API::DeployKeys do
   end
 
   describe 'PUT /projects/:id/deploy_keys/:key_id' do
-    let(:private_deploy_key) { create(:another_deploy_key, public: false) }
-    let(:project_private_deploy_key) do
-      create(:deploy_keys_project, project: project, deploy_key: private_deploy_key)
+    let(:extra_params) { {} }
+
+    subject do
+      put api("/projects/#{project.id}/deploy_keys/#{deploy_key.id}", api_user), params: extra_params
     end
 
-    it 'updates a public deploy key as admin' do
-      expect do
-        put api("/projects/#{project.id}/deploy_keys/#{deploy_key.id}", admin), params: { title: 'new title' }
-      end.not_to change(deploy_key, :title)
+    context 'with non-admin' do
+      let(:api_user) { user }
+
+      it 'does not update a public deploy key' do
+        expect { subject }.not_to change(deploy_key, :title)
+
+        expect(response).to have_gitlab_http_status(404)
+      end
+    end
+
+    context 'with admin' do
+      let(:api_user) { admin }
+
+      context 'public deploy key attached to project' do
+        let(:extra_params) { { title: 'new title', can_push: true } }
 
+        it 'updates the title of the deploy key' do
+          expect { subject }.to change { deploy_key.reload.title }.to 'new title'
           expect(response).to have_gitlab_http_status(200)
         end
 
-    it 'does not update a public deploy key as non admin' do
-      expect do
-        put api("/projects/#{project.id}/deploy_keys/#{deploy_key.id}", user), params: { title: 'new title' }
-      end.not_to change(deploy_key, :title)
+        it 'updates can_push of deploy_keys_project' do
+          expect { subject }.to change { deploy_keys_project.reload.can_push }.from(false).to(true)
+          expect(response).to have_gitlab_http_status(200)
+        end
+      end
 
-      expect(response).to have_gitlab_http_status(404)
+      context 'private deploy key' do
+        let(:deploy_key) { create(:another_deploy_key, public: false) }
+        let(:deploy_keys_project) do
+          create(:deploy_keys_project, project: project, deploy_key: deploy_key)
         end
+        let(:extra_params) { { title: 'new title', can_push: true } }
 
-    it 'does not update a private key with invalid title' do
-      project_private_deploy_key
+        it 'updates the title of the deploy key' do
+          expect { subject }.to change { deploy_key.reload.title }.to 'new title'
+          expect(response).to have_gitlab_http_status(200)
+        end
 
-      expect do
-        put api("/projects/#{project.id}/deploy_keys/#{private_deploy_key.id}", admin), params: { title: '' }
-      end.not_to change(deploy_key, :title)
+        it 'updates can_push of deploy_keys_project' do
+          expect { subject }.to change { deploy_keys_project.reload.can_push }.from(false).to(true)
+          expect(response).to have_gitlab_http_status(200)
+        end
+
+        context 'invalid title' do
+          let(:extra_params) { { title: '' } }
 
+          it 'does not update the title of the deploy key' do
+            expect { subject }.not_to change { deploy_key.reload.title }
             expect(response).to have_gitlab_http_status(400)
           end
+        end
+      end
+    end
 
-    it 'updates a private ssh key with correct attributes' do
-      project_private_deploy_key
+    context 'with admin as project maintainer' do
+      let(:api_user) { admin }
 
-      put api("/projects/#{project.id}/deploy_keys/#{private_deploy_key.id}", admin), params: { title: 'new title', can_push: true }
+      before do
+        project.add_maintainer(admin)
+      end
 
-      expect(json_response['id']).to eq(private_deploy_key.id)
-      expect(json_response['title']).to eq('new title')
-      expect(json_response['can_push']).to eq(true)
+      context 'public deploy key attached to project' do
+        let(:extra_params) { { title: 'new title', can_push: true } }
+
+        it 'updates the title of the deploy key' do
+          expect { subject }.to change { deploy_key.reload.title }.to 'new title'
+          expect(response).to have_gitlab_http_status(200)
+        end
+
+        it 'updates can_push of deploy_keys_project' do
+          expect { subject }.to change { deploy_keys_project.reload.can_push }.from(false).to(true)
+          expect(response).to have_gitlab_http_status(200)
+        end
+      end
+    end
+
+    context 'with maintainer' do
+      let(:api_user) { maintainer }
+
+      before do
+        project.add_maintainer(maintainer)
+      end
+
+      context 'public deploy key attached to project' do
+        let(:extra_params) { { title: 'new title', can_push: true } }
+
+        it 'does not update the title of the deploy key' do
+          expect { subject }.not_to change { deploy_key.reload.title }
+          expect(response).to have_gitlab_http_status(200)
+        end
+
+        it 'updates can_push of deploy_keys_project' do
+          expect { subject }.to change { deploy_keys_project.reload.can_push }.from(false).to(true)
+          expect(response).to have_gitlab_http_status(200)
+        end
+      end
     end
   end
 

spec/serializers/deploy_key_entity_spec.rb

@@ -8,14 +8,15 @@ describe DeployKeyEntity do
   let(:user) { create(:user) }
   let(:project) { create(:project, :internal)}
   let(:project_private) { create(:project, :private)}
-  let!(:project_pending_delete) { create(:project, :internal, pending_delete: true) }
   let(:deploy_key) { create(:deploy_key) }
-  let!(:deploy_key_internal) { create(:deploy_keys_project, project: project, deploy_key: deploy_key) }
-  let!(:deploy_key_private)  { create(:deploy_keys_project, project: project_private, deploy_key: deploy_key) }
-  let!(:deploy_key_pending_delete) { create(:deploy_keys_project, project: project_pending_delete, deploy_key: deploy_key) }
 
   let(:entity) { described_class.new(deploy_key, user: user) }
 
+  before do
+    project.deploy_keys << deploy_key
+    project_private.deploy_keys << deploy_key
+  end
+
   describe 'returns deploy keys with projects a user can read' do
     let(:expected_result) do
       {
@@ -46,17 +47,30 @@ describe DeployKeyEntity do
     it { expect(entity.as_json).to eq(expected_result) }
   end
 
-  describe 'returns can_edit true if user is a maintainer of project' do
+  context 'user is an admin' do
+    let(:user) { create(:user, :admin) }
+
+    it { expect(entity.as_json).to include(can_edit: true) }
+  end
+
+  context 'user is a project maintainer' do
     before do
       project.add_maintainer(user)
     end
 
+    context 'project deploy key' do
       it { expect(entity.as_json).to include(can_edit: true) }
     end
 
-  describe 'returns can_edit true if a user admin' do
-    let(:user) { create(:user, :admin) }
+    context 'public deploy key' do
+      let(:deploy_key_public) { create(:deploy_key, public: true) }
+      let(:entity_public) { described_class.new(deploy_key_public, { user: user, project: project }) }
 
-    it { expect(entity.as_json).to include(can_edit: true) }
+      before do
+        project.deploy_keys << deploy_key_public
+      end
+
+      it { expect(entity_public.as_json).to include(can_edit: true) }
+    end
   end
 end