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