Merge pull request from GHSA-58x8-3qxw-6hm7

* Fix insufficient permission checking for public timeline endpoints

Note that this changes unauthenticated access failure code from 401 to 422

* Add more tests for public timelines

* Require user token in `/api/v1/statuses/:id/translate` and `/api/v1/scheduled_statuses`

app/controllers/api/v1/scheduled_statuses_controller.rb

@@ -6,6 +6,7 @@ class Api::V1::ScheduledStatusesController < Api::BaseController
   before_action -> { doorkeeper_authorize! :read, :'read:statuses' }, except: [:update, :destroy]
   before_action -> { doorkeeper_authorize! :write, :'write:statuses' }, only: [:update, :destroy]
 
+  before_action :require_user!
   before_action :set_statuses, only: :index
   before_action :set_status, except: :index
 

app/controllers/api/v1/statuses/translations_controller.rb

@@ -2,6 +2,7 @@
 
 class Api::V1::Statuses::TranslationsController < Api::V1::Statuses::BaseController
   before_action -> { doorkeeper_authorize! :read, :'read:statuses' }
+  before_action :require_user!
   before_action :set_translation
 
   rescue_from TranslationService::NotConfiguredError, with: :not_found

app/controllers/api/v1/timelines/base_controller.rb

@@ -3,8 +3,14 @@
 class Api::V1::Timelines::BaseController < Api::BaseController
   after_action :insert_pagination_headers, unless: -> { @statuses.empty? }
 
+  before_action :require_user!, if: :require_auth?
+
   private
 
+  def require_auth?
+    !Setting.timeline_preview
+  end
+
   def pagination_collection
     @statuses
   end

app/controllers/api/v1/timelines/link_controller.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class Api::V1::Timelines::LinkController < Api::V1::Timelines::BaseController
-  before_action -> { doorkeeper_authorize! :read, :'read:statuses' }, only: :show, if: :require_auth?
+  before_action -> { authorize_if_got_token! :read, :'read:statuses' }
   before_action :set_preview_card
   before_action :set_statuses
 
@@ -17,10 +17,6 @@ class Api::V1::Timelines::LinkController < Api::V1::Timelines::BaseController
 
   private
 
-  def require_auth?
-    !Setting.timeline_preview
-  end
-
   def set_preview_card
     @preview_card = PreviewCard.joins(:trend).merge(PreviewCardTrend.allowed).find_by!(url: params[:url])
   end

app/controllers/api/v1/timelines/public_controller.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class Api::V1::Timelines::PublicController < Api::V1::Timelines::BaseController
-  before_action :require_user!, only: [:show], if: :require_auth?
+  before_action -> { authorize_if_got_token! :read, :'read:statuses' }
 
   PERMITTED_PARAMS = %i(local remote limit only_media).freeze
 
@@ -13,10 +13,6 @@ class Api::V1::Timelines::PublicController < Api::V1::Timelines::BaseController
 
   private
 
-  def require_auth?
-    !Setting.timeline_preview
-  end
-
   def load_statuses
     preloaded_public_statuses_page
   end

app/controllers/api/v1/timelines/tag_controller.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class Api::V1::Timelines::TagController < Api::V1::Timelines::BaseController
-  before_action -> { doorkeeper_authorize! :read, :'read:statuses' }, only: :show, if: :require_auth?
+  before_action -> { authorize_if_got_token! :read, :'read:statuses' }
   before_action :load_tag
 
   PERMITTED_PARAMS = %i(local limit only_media).freeze

spec/requests/api/v1/scheduled_status_spec.rb

@@ -25,6 +25,17 @@ describe 'Scheduled Statuses' do
       it_behaves_like 'forbidden for wrong scope', 'write write:statuses'
     end
 
+    context 'with an application token' do
+      let(:token) { Fabricate(:accessible_access_token, resource_owner_id: nil, scopes: 'read:statuses') }
+
+      it 'returns http unprocessable entity' do
+        get api_v1_scheduled_statuses_path, headers: headers
+
+        expect(response)
+          .to have_http_status(422)
+      end
+    end
+
     context 'with correct scope' do
       let(:scopes) { 'read:statuses' }
 

spec/requests/api/v1/statuses/translations_spec.rb

@@ -8,6 +8,22 @@ describe 'API V1 Statuses Translations' do
   let(:scopes)  { 'read:statuses' }
   let(:headers) { { 'Authorization' => "Bearer #{token.token}" } }
 
+  context 'with an application token' do
+    let(:token) { Fabricate(:accessible_access_token, resource_owner_id: nil, scopes: scopes) }
+
+    describe 'POST /api/v1/statuses/:status_id/translate' do
+      let(:status) { Fabricate(:status, account: user.account, text: 'Hola', language: 'es') }
+
+      before do
+        post "/api/v1/statuses/#{status.id}/translate", headers: headers
+      end
+
+      it 'returns http unprocessable entity' do
+        expect(response).to have_http_status(422)
+      end
+    end
+  end
+
   context 'with an oauth token' do
     describe 'POST /api/v1/statuses/:status_id/translate' do
       let(:status) { Fabricate(:status, account: user.account, text: 'Hola', language: 'es') }

spec/requests/api/v1/timelines/link_spec.rb

@@ -41,6 +41,8 @@ describe 'Link' do
       end
     end
 
+    it_behaves_like 'forbidden for wrong scope', 'profile'
+
     context 'when there is no preview card' do
       let(:preview_card) { nil }
 
@@ -80,13 +82,25 @@ describe 'Link' do
         Form::AdminSettings.new(timeline_preview: false).save
       end
 
-      context 'when the user is not authenticated' do
+      it_behaves_like 'forbidden for wrong scope', 'profile'
+
+      context 'without an authentication token' do
         let(:headers) { {} }
 
-        it 'returns http unauthorized' do
+        it 'returns http unprocessable entity' do
           subject
 
-          expect(response).to have_http_status(401)
+          expect(response).to have_http_status(422)
+        end
+      end
+
+      context 'with an application access token, not bound to a user' do
+        let(:token) { Fabricate(:accessible_access_token, resource_owner_id: nil, scopes: scopes) }
+
+        it 'returns http unprocessable entity' do
+          subject
+
+          expect(response).to have_http_status(422)
         end
       end
 

spec/requests/api/v1/timelines/public_spec.rb

@@ -34,6 +34,8 @@ describe 'Public' do
     context 'when the instance allows public preview' do
       let(:expected_statuses) { [local_status, remote_status, media_status] }
 
+      it_behaves_like 'forbidden for wrong scope', 'profile'
+
       context 'with an authorized user' do
         it_behaves_like 'a successful request to the public timeline'
       end
@@ -99,13 +101,9 @@ describe 'Public' do
         Form::AdminSettings.new(timeline_preview: false).save
       end
 
-      context 'with an authenticated user' do
-        let(:expected_statuses) { [local_status, remote_status, media_status] }
+      it_behaves_like 'forbidden for wrong scope', 'profile'
 
-        it_behaves_like 'a successful request to the public timeline'
-      end
-
-      context 'with an unauthenticated user' do
+      context 'without an authentication token' do
         let(:headers) { {} }
 
         it 'returns http unprocessable entity' do
@@ -114,6 +112,22 @@ describe 'Public' do
           expect(response).to have_http_status(422)
         end
       end
+
+      context 'with an application access token, not bound to a user' do
+        let(:token) { Fabricate(:accessible_access_token, resource_owner_id: nil, scopes: scopes) }
+
+        it 'returns http unprocessable entity' do
+          subject
+
+          expect(response).to have_http_status(422)
+        end
+      end
+
+      context 'with an authenticated user' do
+        let(:expected_statuses) { [local_status, remote_status, media_status] }
+
+        it_behaves_like 'a successful request to the public timeline'
+      end
     end
   end
 end

spec/requests/api/v1/timelines/tag_spec.rb

@@ -30,6 +30,8 @@ RSpec.describe 'Tag' do
     let(:params)          { {} }
     let(:hashtag)         { 'life' }
 
+    it_behaves_like 'forbidden for wrong scope', 'profile'
+
     context 'when given only one hashtag' do
       let(:expected_statuses) { [life_status] }
 
@@ -93,13 +95,15 @@ RSpec.describe 'Tag' do
         Form::AdminSettings.new(timeline_preview: false).save
       end
 
-      context 'when the user is not authenticated' do
+      it_behaves_like 'forbidden for wrong scope', 'profile'
+
+      context 'without an authentication token' do
         let(:headers) { {} }
 
-        it 'returns http unauthorized' do
+        it 'returns http unprocessable entity' do
           subject
 
-          expect(response).to have_http_status(401)
+          expect(response).to have_http_status(422)
         end
       end