Merge branch 'jej-22869' into 'security'

Fix information disclosure in `Projects::BlobController#update`

It was possible to discover private project names by modifying `from_merge_request`parameter in `Projects::BlobController#update`. This fixes that.

- [ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG.md) entry added
- Tests
  - [x] Added for this feature/bug
  - [ ] All builds are passing
- [x] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

https://gitlab.com/gitlab-org/gitlab-ce/issues/22869

See merge request !2023

1 files changed, 45 insertions, 0 deletions

diff --git a/spec/features/projects/blobs/edit_spec.rb b/spec/features/projects/blobs/edit_spec.rb
new file mode 100644
index 00000000000..a820d07ab3b
--- /dev/null
+++ b/spec/features/projects/blobs/edit_spec.rb
@@ -0,0 +1,45 @@
+require 'spec_helper'
+
+feature 'Editing file blob', feature: true, js: true do
+  include WaitForAjax
+
+  given(:user) { create(:user) }
+  given(:role) { :developer }
+  given(:merge_request) { create(:merge_request, source_branch: 'feature', target_branch: 'master') }
+  given(:project) { merge_request.target_project }
+
+  background do
+    login_as(user)
+    project.team << [user, role]
+  end
+
+  def edit_and_commit
+    wait_for_ajax
+    first('.file-actions').click_link 'Edit'
+    execute_script('ace.edit("editor").setValue("class NextFeature\nend\n")')
+    click_button 'Commit Changes'
+  end
+
+  context 'from MR diff' do
+    before do
+      visit diffs_namespace_project_merge_request_path(project.namespace, project, merge_request)
+      edit_and_commit
+    end
+
+    scenario 'returns me to the mr' do
+      expect(page).to have_content(merge_request.title)
+    end
+  end
+
+  context 'from blob file path' do
+    before do
+      visit namespace_project_blob_path(project.namespace, project, '/feature/files/ruby/feature.rb')
+      edit_and_commit
+    end
+
+    scenario 'updates content' do
+      expect(page).to have_content 'successfully committed'
+      expect(page).to have_content 'NextFeature'
+    end
+  end
+end