API: Add GPG key management

changelogs/unreleased/api-gpg-key-management.yml

+---
+title: 'API: Add GPG key management'
+merge_request: 13828
+author: Robert Schilling
+type: added

lib/api/entities.rb

@@ -491,6 +491,10 @@ module API
       expose :user, using: Entities::UserPublic
     end
 
+    class GPGKey < Grape::Entity
+      expose :id, :key, :created_at
+    end
+
     class Note < Grape::Entity
       # Only Issue and MergeRequest have iid
       NOTEABLE_TYPES_WITH_IID = %w(Issue MergeRequest).freeze

lib/api/users.rb

@@ -492,6 +492,76 @@ module API
         destroy_conditionally!(key)
       end
 
+      desc "Get the currently authenticated user's GPG keys" do
+        detail 'This feature was added in GitLab 10.0'
+        success Entities::GPGKey
+      end
+      params do
+        use :pagination
+      end
+      get 'gpg_keys' do
+        present paginate(current_user.gpg_keys), with: Entities::GPGKey
+      end
+
+      desc 'Get a single GPG key owned by currently authenticated user' do
+        detail 'This feature was added in GitLab 10.0'
+        success Entities::GPGKey
+      end
+      params do
+        requires :key_id, type: Integer, desc: 'The ID of the GPG key'
+      end
+      get 'gpg_keys/:key_id' do
+        key = current_user.gpg_keys.find_by(id: params[:key_id])
+        not_found!('GPG Key') unless key
+
+        present key, with: Entities::GPGKey
+      end
+
+      desc 'Add a new GPG key to the currently authenticated user' do
+        detail 'This feature was added in GitLab 10.0'
+        success Entities::GPGKey
+      end
+      params do
+        requires :key, type: String, desc: 'The new GPG key'
+      end
+      post 'gpg_keys' do
+        key = current_user.gpg_keys.new(declared_params)
+
+        if key.save
+          present key, with: Entities::GPGKey
+        else
+          render_validation_error!(key)
+        end
+      end
+
+      desc 'Revoke a GPG key owned by currently authenticated user' do
+        detail 'This feature was added in GitLab 10.0'
+      end
+      params do
+        requires :key_id, type: Integer, desc: 'The ID of the GPG key'
+      end
+      post 'gpg_keys/:key_id/revoke' do
+        key = current_user.gpg_keys.find_by(id: params[:key_id])
+        not_found!('GPG Key') unless key
+
+        key.revoke
+        status :accepted
+      end
+
+      desc 'Delete a GPG key from the currently authenticated user' do
+        detail 'This feature was added in GitLab 10.0'
+      end
+      params do
+        requires :key_id, type: Integer, desc: 'The ID of the SSH key'
+      end
+      delete 'gpg_keys/:key_id' do
+        key = current_user.gpg_keys.find_by(id: params[:key_id])
+        not_found!('GPG Key') unless key
+
+        status 204
+        key.destroy
+      end
+
       desc "Get the currently authenticated user's email addresses" do
         success Entities::Email
       end

spec/requests/api/users_spec.rb

@@ -4,6 +4,7 @@ describe API::Users do
   let(:user)  { create(:user) }
   let(:admin) { create(:admin) }
   let(:key) { create(:key, user: user) }
+  let(:gpg_key) { create(:gpg_key, user: user) }
   let(:email) { create(:email, user: user) }
   let(:omniauth_user) { create(:omniauth_user) }
   let(:ldap_user) { create(:omniauth_user, provider: 'ldapmain') }
@@ -1153,6 +1154,173 @@ describe API::Users do
     end
   end
 
+  describe 'GET /user/gpg_keys' do
+    context 'when unauthenticated' do
+      it 'returns authentication error' do
+        get api('/user/gpg_keys')
+
+        expect(response).to have_http_status(401)
+      end
+    end
+
+    context 'when authenticated' do
+      it 'returns array of GPG keys' do
+        user.gpg_keys << gpg_key
+        user.save
+
+        get api('/user/gpg_keys', user)
+
+        expect(response).to have_http_status(200)
+        expect(response).to include_pagination_headers
+        expect(json_response).to be_an Array
+        expect(json_response.first['key']).to eq(gpg_key.key)
+      end
+
+      context 'scopes' do
+        let(:path) { '/user/gpg_keys' }
+        let(:api_call) { method(:api) }
+
+        include_examples 'allows the "read_user" scope'
+      end
+    end
+  end
+
+  describe 'GET /user/gpg_keys/:key_id' do
+    it 'returns a single key' do
+      user.gpg_keys << gpg_key
+      user.save
+
+      get api("/user/gpg_keys/#{gpg_key.id}", user)
+
+      expect(response).to have_http_status(200)
+      expect(json_response['key']).to eq(gpg_key.key)
+    end
+
+    it 'returns 404 Not Found within invalid ID' do
+      get api('/user/gpg_keys/42', user)
+
+      expect(response).to have_http_status(404)
+      expect(json_response['message']).to eq('404 GPG Key Not Found')
+    end
+
+    it "returns 404 error if admin accesses user's GPG key" do
+      user.gpg_keys << gpg_key
+      user.save
+
+      get api("/user/gpg_keys/#{gpg_key.id}", admin)
+
+      expect(response).to have_http_status(404)
+      expect(json_response['message']).to eq('404 GPG Key Not Found')
+    end
+
+    it 'returns 404 for invalid ID' do
+      get api('/users/gpg_keys/ASDF', admin)
+
+      expect(response).to have_http_status(404)
+    end
+
+    context 'scopes' do
+      let(:path) { "/user/gpg_keys/#{gpg_key.id}" }
+      let(:api_call) { method(:api) }
+
+      include_examples 'allows the "read_user" scope'
+    end
+  end
+
+  describe 'POST /user/gpg_keys' do
+    it 'creates a GPG key' do
+      key_attrs = attributes_for :gpg_key
+      expect do
+        post api('/user/gpg_keys', user), key_attrs
+
+        expect(response).to have_http_status(201)
+      end.to change { user.gpg_keys.count }.by(1)
+    end
+
+    it 'returns a 401 error if unauthorized' do
+      post api('/user/gpg_keys'), key: 'some key'
+
+      expect(response).to have_http_status(401)
+    end
+
+    it 'does not create GPG key without key' do
+      post api('/user/gpg_keys', user)
+
+      expect(response).to have_http_status(400)
+      expect(json_response['error']).to eq('key is missing')
+    end
+  end
+
+  describe 'POST /user/gpg_keys/:key_id/revoke' do
+    it 'revokes existing GPG key' do
+      user.gpg_keys << gpg_key
+      user.save
+
+      expect do
+        post api("/user/gpg_keys/#{gpg_key.id}/revoke", user)
+
+        expect(response).to have_http_status(:accepted)
+      end.to change { user.gpg_keys.count}.by(-1)
+    end
+
+    it 'returns 404 if key ID not found' do
+      post api('/user/gpg_keys/42/revoke', user)
+
+      expect(response).to have_http_status(404)
+      expect(json_response['message']).to eq('404 GPG Key Not Found')
+    end
+
+    it 'returns 401 error if unauthorized' do
+      user.gpg_keys << gpg_key
+      user.save
+
+      post api("/user/gpg_keys/#{gpg_key.id}/revoke")
+
+      expect(response).to have_http_status(401)
+    end
+
+    it 'returns a 404 for invalid ID' do
+      post api('/users/gpg_keys/ASDF/revoke', admin)
+
+      expect(response).to have_http_status(404)
+    end
+  end
+
+  describe 'DELETE /user/gpg_keys/:key_id' do
+    it 'deletes existing GPG key' do
+      user.gpg_keys << gpg_key
+      user.save
+
+      expect do
+        delete api("/user/gpg_keys/#{gpg_key.id}", user)
+
+        expect(response).to have_http_status(204)
+      end.to change { user.gpg_keys.count}.by(-1)
+    end
+
+    it 'returns 404 if key ID not found' do
+      delete api('/user/gpg_keys/42', user)
+
+      expect(response).to have_http_status(404)
+      expect(json_response['message']).to eq('404 GPG Key Not Found')
+    end
+
+    it 'returns 401 error if unauthorized' do
+      user.gpg_keys << gpg_key
+      user.save
+
+      delete api("/user/gpg_keys/#{gpg_key.id}")
+
+      expect(response).to have_http_status(401)
+    end
+
+    it 'returns a 404 for invalid ID' do
+      delete api('/users/gpg_keys/ASDF', admin)
+
+      expect(response).to have_http_status(404)
+    end
+  end
+
   describe "GET /user/emails" do
     context "when unauthenticated" do
       it "returns authentication error" do