store gpg user name and email on the signature

app/models/gpg_key.rb

@@ -37,15 +37,21 @@ class GpgKey < ActiveRecord::Base
     write_attribute(:key, value)
   end
 
-  def emails
-    @emails ||= Gitlab::Gpg.emails_from_key(key)
+  def user_infos
+    @user_infos ||= Gitlab::Gpg.user_infos_from_key(key)
+  end
+
+  def verified_user_infos
+    user_infos.select do |user_info|
+      user_info[:email] == user.email
+    end
   end
 
   def emails_with_verified_status
-    emails.map do |email|
+    user_infos.map do |user_info|
       [
-        email,
-        email == user.email
+        user_info[:email],
+        user_info[:email] == user.email
       ]
     end.to_h
   end

db/migrate/20170713104235_add_gpg_key_user_info_to_gpg_signatures.rb

@@ -0,0 +1,11 @@
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class AddGpgKeyUserInfoToGpgSignatures < ActiveRecord::Migration
+  DOWNTIME = false
+
+  def change
+    add_column :gpg_signatures, :gpg_key_user_name, :string
+    add_column :gpg_signatures, :gpg_key_user_email, :string
+  end
+end

db/schema.rb

@@ -560,6 +560,8 @@ ActiveRecord::Schema.define(version: 20170725145659) do
     t.boolean "valid_signature"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.string "gpg_key_user_name"
+    t.string "gpg_key_user_email"
   end
 
   add_index "gpg_signatures", ["commit_sha"], name: "index_gpg_signatures_on_commit_sha", using: :btree

lib/gitlab/gpg.rb

@@ -32,11 +32,13 @@ module Gitlab
       end
     end
 
-    def emails_from_key(key)
+    def user_infos_from_key(key)
       using_tmp_keychain do
         fingerprints = CurrentKeyChain.fingerprints_from_key(key)
 
-        GPGME::Key.find(:public, fingerprints).flat_map { |raw_key| raw_key.uids.map(&:email) }
+        GPGME::Key.find(:public, fingerprints).flat_map do |raw_key|
+          raw_key.uids.map { |uid| { name: uid.name, email: uid.email } }
+        end
       end
     end
 

lib/gitlab/gpg/commit.rb

@@ -26,10 +26,7 @@ module Gitlab
 
       def update_signature!(cached_signature)
         using_keychain do |gpg_key|
-          cached_signature.update_attributes!(
-            valid_signature: gpg_signature_valid_signature_value(gpg_key),
-            gpg_key: gpg_key
-          )
+          cached_signature.update_attributes!(attributes(gpg_key))
         end
       end
 
@@ -59,18 +56,30 @@ module Gitlab
       end
 
       def create_cached_signature!(gpg_key)
-        GpgSignature.create!(
+        GpgSignature.create!(attributes(gpg_key))
+      end
+
+      def attributes(gpg_key)
+        user_infos = user_infos(gpg_key)
+
+        {
           commit_sha: commit.sha,
           project: commit.project,
           gpg_key: gpg_key,
           gpg_key_primary_keyid: gpg_key&.primary_keyid || verified_signature.fingerprint,
+          gpg_key_user_name: user_infos[:name],
+          gpg_key_user_email: user_infos[:email],
           valid_signature: gpg_signature_valid_signature_value(gpg_key)
-        )
+        }
       end
 
       def gpg_signature_valid_signature_value(gpg_key)
         !!(gpg_key && gpg_key.verified? && verified_signature.valid?)
       end
+
+      def user_infos(gpg_key)
+        gpg_key&.verified_user_infos&.first || gpg_key&.user_infos&.first || {}
+      end
     end
   end
 end

spec/lib/gitlab/gpg/commit_spec.rb

@@ -32,6 +32,8 @@ RSpec.describe Gitlab::Gpg::Commit do
           project: project,
           gpg_key: gpg_key,
           gpg_key_primary_keyid: GpgHelpers::User1.primary_keyid,
+          gpg_key_user_name: GpgHelpers::User1.names.first,
+          gpg_key_user_email: GpgHelpers::User1.emails.first,
           valid_signature: true
         )
       end
@@ -67,6 +69,8 @@ RSpec.describe Gitlab::Gpg::Commit do
           project: project,
           gpg_key: gpg_key,
           gpg_key_primary_keyid: GpgHelpers::User1.primary_keyid,
+          gpg_key_user_name: GpgHelpers::User1.names.first,
+          gpg_key_user_email: GpgHelpers::User1.emails.first,
           valid_signature: false
         )
       end
@@ -102,6 +106,8 @@ RSpec.describe Gitlab::Gpg::Commit do
           project: project,
           gpg_key: nil,
           gpg_key_primary_keyid: GpgHelpers::User1.primary_keyid,
+          gpg_key_user_name: nil,
+          gpg_key_user_email: nil,
           valid_signature: false
         )
       end

spec/lib/gitlab/gpg_spec.rb

@@ -28,16 +28,18 @@ describe Gitlab::Gpg do
     end
   end
 
-  describe '.emails_from_key' do
-    it 'returns the emails' do
-      expect(
-        described_class.emails_from_key(GpgHelpers::User1.public_key)
-      ).to eq GpgHelpers::User1.emails
+  describe '.user_infos_from_key' do
+    it 'returns the names and emails' do
+      user_infos = described_class.user_infos_from_key(GpgHelpers::User1.public_key)
+      expect(user_infos).to eq([{
+        name: GpgHelpers::User1.names.first,
+        email: GpgHelpers::User1.emails.first
+      }])
     end
 
     it 'returns an empty array when the key is invalid' do
       expect(
-        described_class.emails_from_key('bogus')
+        described_class.user_infos_from_key('bogus')
       ).to eq []
     end
   end

spec/models/gpg_key_spec.rb

@@ -46,11 +46,31 @@ describe GpgKey do
     end
   end
 
-  describe '#emails' do
-    it 'returns the emails from the gpg key' do
+  describe '#user_infos' do
+    it 'returns the user infos from the gpg key' do
       gpg_key = create :gpg_key, key: GpgHelpers::User1.public_key
+      expect(Gitlab::Gpg).to receive(:user_infos_from_key).with(gpg_key.key)
 
-      expect(gpg_key.emails).to eq GpgHelpers::User1.emails
+      gpg_key.user_infos
+    end
+  end
+
+  describe '#verified_user_infos' do
+    it 'returns the user infos if it is verified' do
+      user = create :user, email: GpgHelpers::User1.emails.first
+      gpg_key = create :gpg_key, key: GpgHelpers::User1.public_key, user: user
+
+      expect(gpg_key.verified_user_infos).to eq([{
+        name: GpgHelpers::User1.names.first,
+        email: GpgHelpers::User1.emails.first
+      }])
+    end
+
+    it 'returns an empty array if the user info is not verified' do
+      user = create :user, email: 'unrelated@example.com'
+      gpg_key = create :gpg_key, key: GpgHelpers::User1.public_key, user: user
+
+      expect(gpg_key.verified_user_infos).to eq([])
     end
   end
 

spec/support/gpg_helpers.rb

@@ -98,6 +98,10 @@ module GpgHelpers
       '5F7EA3981A5845B141ABD522CCFBE19F00AC8B1D'
     end
 
+    def names
+      ['Nannie Bernhard']
+    end
+
     def emails
       ['nannie.bernhard@example.com']
     end
@@ -187,6 +191,10 @@ module GpgHelpers
       '6D494CA6FC90C0CAE0910E42BF9D925F911EFD65'
     end
 
+    def names
+      ['Bette Cartwright', 'Bette Cartwright']
+    end
+
     def emails
       ['bette.cartwright@example.com', 'bette.cartwright@example.net']
     end