comparison lib/redmine/ciphering.rb @ 909:cbb26bc654de redmine-1.3

Update to Redmine 1.3-stable branch (Redmine SVN rev 8964)

 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 module Redmine
   module Ciphering
-    def self.included(base) 
+    def self.included(base)
       base.extend ClassMethods
     end
-    
+
     class << self
       def encrypt_text(text)
-        if cipher_key.blank?
+        if cipher_key.blank? || text.blank?
           text
         else
           c = OpenSSL::Cipher::Cipher.new("aes-256-cbc")
           iv = c.random_iv
           c.encrypt

           e = c.update(text.to_s)
           e << c.final
           "aes-256-cbc:" + [e, iv].map {|v| Base64.encode64(v).strip}.join('--')
         end
       end
-      
+
       def decrypt_text(text)
         if text && match = text.match(/\Aaes-256-cbc:(.+)\Z/)
+          if cipher_key.blank?
+            logger.error "Attempt to decrypt a ciphered text with no cipher key configured in config/configuration.yml" if logger
+            return text
+          end
           text = match[1]
           c = OpenSSL::Cipher::Cipher.new("aes-256-cbc")
           e, iv = text.split("--").map {|s| Base64.decode64(s)}
           c.decrypt
           c.key = cipher_key

           d << c.final
         else
           text
         end
       end
-      
+
       def cipher_key
         key = Redmine::Configuration['database_cipher_key'].to_s
         key.blank? ? nil : Digest::SHA256.hexdigest(key)
       end
+      
+      def logger
+        Rails.logger
+      end
     end
-  
+
     module ClassMethods
       def encrypt_all(attribute)
         transaction do
           all.each do |object|
             clear = object.send(attribute)
             object.send "#{attribute}=", clear
             raise(ActiveRecord::Rollback) unless object.save(false)
           end
         end ? true : false
       end
-      
+
       def decrypt_all(attribute)
         transaction do
           all.each do |object|
             clear = object.send(attribute)
             object.write_attribute attribute, clear
             raise(ActiveRecord::Rollback) unless object.save(false)
           end
         end
       end ? true : false
     end
-    
+
     private
-    
+
     # Returns the value of the given ciphered attribute
     def read_ciphered_attribute(attribute)
       Redmine::Ciphering.decrypt_text(read_attribute(attribute))
     end
-    
+
     # Sets the value of the given ciphered attribute
     def write_ciphered_attribute(attribute, value)
       write_attribute(attribute, Redmine::Ciphering.encrypt_text(value))
     end
   end