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# Redmine - project management software
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# Copyright (C) 2006-2016 Jean-Philippe Lang
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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class Token < ActiveRecord::Base
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belongs_to :user
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validates_uniqueness_of :value
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attr_protected :id
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before_create :delete_previous_tokens, :generate_new_token
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cattr_accessor :validity_time
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self.validity_time = 1.day
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def generate_new_token
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self.value = Token.generate_token_value
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end
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# Return true if token has expired
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def expired?
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return Time.now > self.created_on + self.class.validity_time
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end
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# Delete all expired tokens
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def self.destroy_expired
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Token.where("action NOT IN (?) AND created_on < ?", ['feeds', 'api', 'session'], Time.now - validity_time).delete_all
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end
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# Returns the active user who owns the key for the given action
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def self.find_active_user(action, key, validity_days=nil)
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user = find_user(action, key, validity_days)
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if user && user.active?
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user
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end
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end
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# Returns the user who owns the key for the given action
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def self.find_user(action, key, validity_days=nil)
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token = find_token(action, key, validity_days)
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if token
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token.user
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end
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end
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# Returns the token for action and key with an optional
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# validity duration (in number of days)
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def self.find_token(action, key, validity_days=nil)
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action = action.to_s
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key = key.to_s
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return nil unless action.present? && key =~ /\A[a-z0-9]+\z/i
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token = Token.where(:action => action, :value => key).first
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if token && (token.action == action) && (token.value == key) && token.user
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if validity_days.nil? || (token.created_on > validity_days.days.ago)
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token
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end
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end
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end
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def self.generate_token_value
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Redmine::Utils.random_hex(20)
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end
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private
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# Removes obsolete tokens (same user and action)
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def delete_previous_tokens
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if user
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scope = Token.where(:user_id => user.id, :action => action)
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if action == 'session'
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ids = scope.order(:updated_on => :desc).offset(9).ids
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if ids.any?
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Token.delete(ids)
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end
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else
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scope.delete_all
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end
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end
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end
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end
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