#794: update KeyPair model, write migration

Gemfile

@@ -56,6 +56,8 @@ gem 'rails-backbone', '~> 0.7.2'
 gem 'rack-throttle'
 gem 'rest-client', '~> 1.6.6'
 
+gem 'attr_encrypted', '1.2.1'
+
 group :assets do
   gem 'sass-rails', '~> 3.2.5'
   gem 'coffee-rails', '~> 3.2.2'

Gemfile.lock

@@ -58,6 +58,8 @@ GEM
     ancestry (1.3.0)
       activerecord (>= 2.3.14)
     arel (3.0.2)
+    attr_encrypted (1.2.1)
+      encryptor (>= 1.1.1)
     bcrypt-ruby (3.0.1)
     blankslate (2.1.2.4)
     bluepill (0.0.60)
@@ -102,6 +104,7 @@ GEM
     diff-display (0.0.1)
     diff-lcs (1.1.3)
     ejs (1.0.0)
+    encryptor (1.1.3)
     erubis (2.7.0)
     escape_utils (0.2.4)
     eventmachine (0.12.10)
@@ -364,6 +367,7 @@ DEPENDENCIES
   RedCloth
   airbrake (~> 3.1.2)
   ancestry (~> 1.3.0)
+  attr_encrypted (= 1.2.1)
   bluepill (~> 0.0.60)
   cancan (= 1.6.7)
   cape

app/models/key_pair.rb

@@ -2,34 +2,59 @@ class KeyPair < ActiveRecord::Base
   belongs_to :repository
   belongs_to :user
 
-  attr_accessor :secret
+  attr_accessor :fingerprint
   attr_accessible :public, :secret, :repository_id
+  attr_encrypted :secret, :key => APP_CONFIG['secret_key']
 
   validates :repository_id, :public, :user_id, :presence => true
   validates :secret, :presence => true, :on => :create
 
   validates :repository_id, :uniqueness => {:message => I18n.t("activerecord.errors.key_pair.repo_key_exists")}
+  validate :check_keys
 
-  before_create   :key_create_call
-  before_destroy  :rm_key_call
+  before_create :set_key_id
 
   protected
 
-    def key_create_call
-      result, self.key_id = BuildServer.import_gpg_key_pair(public, secret)
-      raise "Failed to create key_pairs for repository #{repository_id} with code #{result}." if result == 4
-      if result != 0 || self.key_id.nil?
-        errors.add(:public, I18n.t("activerecord.errors.key_pair.rpc_error_#{result}"))
-        return false
-      end
-      result = BuildServer.set_repository_key(repository.platform.name, repository.name, self.key_id)
-      raise "Failed to sign repository #{repository.name} in platform #{repository.platform.name}
-             using key_id #{self.key_id} with code #{result}." unless result.zero?
+    def set_key_id
+      self.key_id = @fingerprint
     end
 
-    def rm_key_call
-      result = BuildServer.rm_repository_key(repository.platform.name, repository.name)
-      raise "Failed to desroy repository key #{repository.name} in platform 
-             #{repository.platform.name} with code #{result}." unless result.zero?
+    def check_keys
+      p_key_fingerprint = fingerprint_of_key(:public)
+      s_key_fingerprint = fingerprint_of_key(:secret)
+      if p_key_fingerprint && s_key_fingerprint
+        if p_key_fingerprint != s_key_fingerprint
+          errors.add :secret, I18n.t('activerecord.errors.key_pair.rpc_error_3')
+        else
+          @fingerprint = p_key_fingerprint
         end
       end
+    end
+
+    def fingerprint_of_key(field)
+      key = self.send(field)
+      tmp_file = "key-#{repository_id}-#{user_id}"
+      file = Tempfile.new tmp_file
+      file.write key
+      file.close
+      str = %x[ gpg --with-fingerprint #{file.path} | sed -n 1,2p]
+      info = str.strip.split("\n")
+      if info.size != 2 || (fingerprint = info[1].gsub(/.*\=/, '').strip.gsub(/\s/, ':') && fingerprint.present?)
+        errors.add field, I18n.t('activerecord.errors.key_pair.wrong_key')
+        return nil
+      end
+      prefix = field == :public ? 'pub' : 'sec'
+      if info[0] !~ /^#{prefix}/
+        errors.add field, I18n.t("activerecord.errors.key_pair.contains_#{field}_key")
+        return nil
+      end
+      return fingerprint
+    ensure
+      if file
+        file.close
+        file.unlink   # deletes the temp file
+      end
+    end
+
+end

config/locales/models/key_pair.en.yml

@@ -21,6 +21,9 @@ en:
         rpc_error_1: could not import public key
         rpc_error_2: could not import secret key
         rpc_error_3: keys are imported, but it is not a key pair (ids differ)
+        wrong_key: wrong
+        contains_public_key: contains secret key
+        contains_secret_key: contains public key
     models:
       key_pair: Key Pair
     attributes:

config/locales/models/key_pair.ru.yml

@@ -21,6 +21,9 @@ ru:
         rpc_error_1: Проблемы с импортром публичного ключа
         rpc_error_2: Проблемы с импортром секретного ключа
         rpc_error_3: Ключи импортированы, но не являются парой (идентификаторы не совпадают)
+        wrong_key: неправильный
+        contains_public_key: содержит секретный ключ
+        contains_secret_key: содержит публичный ключ
     models:
       key_pair: Подпись
     attributes:

db/migrate/20121219122905_add_encrypted_secret_to_key_pairs.rb

@@ -0,0 +1,22 @@
+class AddEncryptedSecretToKeyPairs < ActiveRecord::Migration
+  def up
+    rename_table :key_pairs, :key_pairs_backup
+    rename_index :key_pairs_backup, 'index_key_pairs_on_repository_id', 'index_key_pairs_backup_on_repository_id'
+
+    create_table :key_pairs do |t|
+      t.text :public, :null => false
+      t.text :encrypted_secret, :null => false
+      t.string :key_id, :null => false
+      t.references :user, :null => false
+      t.references :repository, :null => false
+      t.timestamps
+    end
+    add_index :key_pairs, :repository_id, :unique => true
+  end
+
+  def down
+    drop_table :key_pairs
+    rename_table :key_pairs_backup, :key_pairs
+    rename_index :key_pairs, 'index_key_pairs_backup_on_repository_id', 'index_key_pairs_on_repository_id'
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20121214145009) do
+ActiveRecord::Schema.define(:version => 20121219122905) do
 
   create_table "activity_feeds", :force => true do |t|
     t.integer  "user_id",    :null => false
@@ -207,6 +207,18 @@ ActiveRecord::Schema.define(:version => 20121214145009) do
   add_index "issues", ["project_id", "serial_id"], :name => "index_issues_on_project_id_and_serial_id", :unique => true
 
   create_table "key_pairs", :force => true do |t|
+    t.text     "public",           :null => false
+    t.text     "encrypted_secret", :null => false
+    t.string   "key_id",           :null => false
+    t.integer  "user_id",          :null => false
+    t.integer  "repository_id",    :null => false
+    t.datetime "created_at",       :null => false
+    t.datetime "updated_at",       :null => false
+  end
+
+  add_index "key_pairs", ["repository_id"], :name => "index_key_pairs_on_repository_id", :unique => true
+
+  create_table "key_pairs_backup", :force => true do |t|
     t.integer  "repository_id", :null => false
     t.integer  "user_id",       :null => false
     t.string   "key_id",        :null => false
@@ -215,7 +227,7 @@ ActiveRecord::Schema.define(:version => 20121214145009) do
     t.datetime "updated_at",    :null => false
   end
 
-  add_index "key_pairs", ["repository_id"], :name => "index_key_pairs_on_repository_id", :unique => true
+  add_index "key_pairs_backup", ["repository_id"], :name => "index_key_pairs_backup_on_repository_id", :unique => true
 
   create_table "labelings", :force => true do |t|
     t.integer  "label_id",   :null => false