Post-merge improve of CI permissions

app/controllers/projects/git_http_client_controller.rb

@@ -32,11 +32,11 @@ class Projects::GitHttpClientController < Projects::ApplicationController
         return # Allow access
       end
     elsif allow_kerberos_spnego_auth? && spnego_provided?
-      user = find_kerberos_user
+      kerberos_user = find_kerberos_user
 
-      if user
+      if kerberos_user
         @authentication_result = Gitlab::Auth::Result.new(
-          user, nil, :kerberos, Gitlab::Auth.full_authentication_abilities)
+          kerberos_user, nil, :kerberos, Gitlab::Auth.full_authentication_abilities)
 
         send_final_spnego_response
         return # Allow access

app/models/ci/build.rb

@@ -493,8 +493,11 @@ module Ci
     end
 
     def hide_secrets(trace)
-      trace = Ci::MaskSecret.mask(trace, project.runners_token) if project
-      trace = Ci::MaskSecret.mask(trace, token)
+      return unless trace
+
+      trace = trace.dup
+      Ci::MaskSecret.mask!(trace, project.runners_token) if project
+      Ci::MaskSecret.mask!(trace, token)
       trace
     end
   end

lib/ci/mask_secret.rb

 module Ci::MaskSecret
   class << self
-    def mask(value, token)
-      return value unless value.present? && token.present?
+    def mask!(value, token)
+      return unless value.present? && token.present?
 
-      value.gsub(token, 'x' * token.length)
+      value.gsub!(token, 'x' * token.length)
     end
   end
 end

spec/lib/ci/mask_secret_spec.rb

@@ -5,15 +5,21 @@ describe Ci::MaskSecret, lib: true do
 
   describe '#mask' do
     it 'masks exact number of characters' do
-      expect(subject.mask('token', 'oke')).to eq('txxxn')
+      expect(mask('token', 'oke')).to eq('txxxn')
     end
 
     it 'masks multiple occurrences' do
-      expect(subject.mask('token token token', 'oke')).to eq('txxxn txxxn txxxn')
+      expect(mask('token token token', 'oke')).to eq('txxxn txxxn txxxn')
     end
 
     it 'does not mask if not found' do
-      expect(subject.mask('token', 'not')).to eq('token')
+      expect(mask('token', 'not')).to eq('token')
+    end
+
+    def mask(value, token)
+      value = value.dup
+      subject.mask!(value, token)
+      value
     end
   end
 end

spec/lib/gitlab/git_access_spec.rb

@@ -343,7 +343,7 @@ describe Gitlab::GitAccess, lib: true do
       end
 
       context 'to private project' do
-        let(:project) { create(:project, :internal) }
+        let(:project) { create(:project) }
 
         it { expect(subject).not_to be_allowed }
       end

spec/requests/git_http_spec.rb

@@ -335,7 +335,7 @@ describe 'Git HTTP requests', lib: true do
             project.team << [user, :reporter]
           end
 
-          shared_examples 'can download code only from own projects' do
+          shared_examples 'can download code only' do
             it 'downloads get status 200' do
               clone_get "#{project.path_with_namespace}.git", user: 'gitlab-ci-token', password: build.token
 
@@ -353,7 +353,7 @@ describe 'Git HTTP requests', lib: true do
           context 'administrator' do
             let(:user) { create(:admin) }
 
-            it_behaves_like 'can download code only from own projects'
+            it_behaves_like 'can download code only'
 
             it 'downloads from other project get status 403' do
               clone_get "#{other_project.path_with_namespace}.git", user: 'gitlab-ci-token', password: build.token
@@ -365,7 +365,7 @@ describe 'Git HTTP requests', lib: true do
           context 'regular user' do
             let(:user) { create(:user) }
 
-            it_behaves_like 'can download code only from own projects'
+            it_behaves_like 'can download code only'
 
             it 'downloads from other project get status 404' do
               clone_get "#{other_project.path_with_namespace}.git", user: 'gitlab-ci-token', password: build.token