1  # Redmine - project management software
   2  # Copyright (C) 2006-2011  Jean-Philippe Lang
   3  #
   4  # This program is free software; you can redistribute it and/or
   5  # modify it under the terms of the GNU General Public License
   6  # as published by the Free Software Foundation; either version 2
   7  # of the License, or (at your option) any later version.
   8  #
   9  # This program is distributed in the hope that it will be useful,
  10  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  # GNU General Public License for more details.
  13  #
  14  # You should have received a copy of the GNU General Public License
  15  # along with this program; if not, write to the Free Software
  16  # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17 
  18  class Token < ActiveRecord::Base
  19    belongs_to :user
  20    validates_uniqueness_of :value
  21 
  22    before_create :delete_previous_tokens, :generate_new_token
  23 
  24    @@validity_time = 1.day
  25 
  26    def generate_new_token
  27      self.value = Token.generate_token_value
  28    end
  29 
  30    # Return true if token has expired
  31    def expired?
  32      return Time.now > self.created_on + @@validity_time
  33    end
  34 
  35    # Delete all expired tokens
  36    def self.destroy_expired
  37      Token.delete_all ["action <> 'feeds' AND created_on < ?", Time.now - @@validity_time]
  38    end
  39 
  40  private
  41    def self.generate_token_value
  42      Redmine::Utils.random_hex(20)
  43    end
  44 
  45    # Removes obsolete tokens (same user and action)
  46    def delete_previous_tokens
  47      if user
  48        Token.delete_all(['user_id = ? AND action = ?', user.id, action])
  49      end
  50    end
  51  end