Chris@0: # Redmine - project management software
Chris@441: # Copyright (C) 2006-2011  Jean-Philippe Lang
Chris@0: #
Chris@0: # This program is free software; you can redistribute it and/or
Chris@0: # modify it under the terms of the GNU General Public License
Chris@0: # as published by the Free Software Foundation; either version 2
Chris@0: # of the License, or (at your option) any later version.
Chris@0: # 
Chris@0: # This program is distributed in the hope that it will be useful,
Chris@0: # but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@0: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@0: # GNU General Public License for more details.
Chris@0: # 
Chris@0: # You should have received a copy of the GNU General Public License
Chris@0: # along with this program; if not, write to the Free Software
Chris@0: # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
Chris@0: 
Chris@0: require "digest/sha1"
Chris@0: 
Chris@0: class User < Principal
Chris@119:   include Redmine::SafeAttributes
Chris@119:   
Chris@0:   # Account statuses
Chris@0:   STATUS_ANONYMOUS  = 0
Chris@0:   STATUS_ACTIVE     = 1
Chris@0:   STATUS_REGISTERED = 2
Chris@0:   STATUS_LOCKED     = 3
Chris@0:   
Chris@0:   USER_FORMATS = {
Chris@0:     :firstname_lastname => '#{firstname} #{lastname}',
Chris@0:     :firstname => '#{firstname}',
Chris@0:     :lastname_firstname => '#{lastname} #{firstname}',
Chris@0:     :lastname_coma_firstname => '#{lastname}, #{firstname}',
Chris@0:     :username => '#{login}'
Chris@0:   }
Chris@0: 
chris@37:   MAIL_NOTIFICATION_OPTIONS = [
Chris@119:     ['all', :label_user_mail_option_all],
Chris@119:     ['selected', :label_user_mail_option_selected],
Chris@119:     ['only_my_events', :label_user_mail_option_only_my_events],
Chris@119:     ['only_assigned', :label_user_mail_option_only_assigned],
Chris@119:     ['only_owner', :label_user_mail_option_only_owner],
Chris@119:     ['none', :label_user_mail_option_none]
Chris@119:   ]
chris@37: 
Chris@0:   has_and_belongs_to_many :groups, :after_add => Proc.new {|user, group| group.user_added(user)},
Chris@0:                                    :after_remove => Proc.new {|user, group| group.user_removed(user)}
Chris@0:   has_many :issue_categories, :foreign_key => 'assigned_to_id', :dependent => :nullify
Chris@0:   has_many :changesets, :dependent => :nullify
Chris@0:   has_one :preference, :dependent => :destroy, :class_name => 'UserPreference'
Chris@128:   has_one :rss_token, :class_name => 'Token', :conditions => "action='feeds'"
Chris@128:   has_one :api_token, :class_name => 'Token', :conditions => "action='api'"
Chris@0:   belongs_to :auth_source
Chris@0:   
Chris@0:   # Active non-anonymous users scope
Chris@0:   named_scope :active, :conditions => "#{User.table_name}.status = #{STATUS_ACTIVE}"
Chris@0:   
Chris@0:   acts_as_customizable
Chris@0:   
Chris@0:   attr_accessor :password, :password_confirmation
Chris@0:   attr_accessor :last_before_login_on
Chris@0:   # Prevents unauthorized assignments
Chris@119:   attr_protected :login, :admin, :password, :password_confirmation, :hashed_password
Chris@0: 	
Chris@0:   validates_presence_of :login, :firstname, :lastname, :mail, :if => Proc.new { |user| !user.is_a?(AnonymousUser) }
Chris@0:   validates_uniqueness_of :login, :if => Proc.new { |user| !user.login.blank? }, :case_sensitive => false
Chris@0:   validates_uniqueness_of :mail, :if => Proc.new { |user| !user.mail.blank? }, :case_sensitive => false
Chris@0:   # Login must contain lettres, numbers, underscores only
Chris@0:   validates_format_of :login, :with => /^[a-z0-9_\-@\.]*$/i
Chris@0:   validates_length_of :login, :maximum => 30
Chris@0:   validates_length_of :firstname, :lastname, :maximum => 30
Chris@0:   validates_format_of :mail, :with => /^([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})$/i, :allow_nil => true
Chris@0:   validates_length_of :mail, :maximum => 60, :allow_nil => true
Chris@0:   validates_confirmation_of :password, :allow_nil => true
Chris@119:   validates_inclusion_of :mail_notification, :in => MAIL_NOTIFICATION_OPTIONS.collect(&:first), :allow_blank => true
Chris@0: 
Chris@128:   before_destroy :remove_references_before_destroy
Chris@128:   
Chris@441:   named_scope :in_group, lambda {|group|
Chris@441:     group_id = group.is_a?(Group) ? group.id : group.to_i
Chris@441:     { :conditions => ["#{User.table_name}.id IN (SELECT gu.user_id FROM #{table_name_prefix}groups_users#{table_name_suffix} gu WHERE gu.group_id = ?)", group_id] }
Chris@441:   }
Chris@441:   named_scope :not_in_group, lambda {|group|
Chris@441:     group_id = group.is_a?(Group) ? group.id : group.to_i
Chris@441:     { :conditions => ["#{User.table_name}.id NOT IN (SELECT gu.user_id FROM #{table_name_prefix}groups_users#{table_name_suffix} gu WHERE gu.group_id = ?)", group_id] }
Chris@441:   }
Chris@441:   
Chris@0:   def before_create
chris@37:     self.mail_notification = Setting.default_notification_option if self.mail_notification.blank?
Chris@0:     true
Chris@0:   end
Chris@0:   
Chris@0:   def before_save
Chris@0:     # update hashed_password if password was set
Chris@245:     if self.password && self.auth_source_id.blank?
Chris@245:       salt_password(password)
Chris@245:     end
Chris@0:   end
Chris@0:   
Chris@0:   def reload(*args)
Chris@0:     @name = nil
Chris@441:     @projects_by_role = nil
Chris@0:     super
Chris@0:   end
Chris@0:   
Chris@1:   def mail=(arg)
Chris@1:     write_attribute(:mail, arg.to_s.strip)
Chris@1:   end
Chris@1:   
Chris@0:   def identity_url=(url)
Chris@0:     if url.blank?
Chris@0:       write_attribute(:identity_url, '')
Chris@0:     else
Chris@0:       begin
Chris@0:         write_attribute(:identity_url, OpenIdAuthentication.normalize_identifier(url))
Chris@0:       rescue OpenIdAuthentication::InvalidOpenId
Chris@0:         # Invlaid url, don't save
Chris@0:       end
Chris@0:     end
Chris@0:     self.read_attribute(:identity_url)
Chris@0:   end
Chris@0:   
Chris@0:   # Returns the user that matches provided login and password, or nil
Chris@0:   def self.try_to_login(login, password)
Chris@0:     # Make sure no one can sign in with an empty password
Chris@0:     return nil if password.to_s.empty?
Chris@0:     user = find_by_login(login)
Chris@0:     if user
Chris@0:       # user is already in local database
Chris@0:       return nil if !user.active?
Chris@0:       if user.auth_source
Chris@0:         # user has an external authentication method
Chris@0:         return nil unless user.auth_source.authenticate(login, password)
Chris@0:       else
Chris@0:         # authentication with local password
Chris@245:         return nil unless user.check_password?(password)
Chris@0:       end
Chris@0:     else
Chris@0:       # user is not yet registered, try to authenticate with available sources
Chris@0:       attrs = AuthSource.authenticate(login, password)
Chris@0:       if attrs
Chris@0:         user = new(attrs)
Chris@0:         user.login = login
Chris@0:         user.language = Setting.default_language
Chris@0:         if user.save
Chris@0:           user.reload
Chris@0:           logger.info("User '#{user.login}' created from external auth source: #{user.auth_source.type} - #{user.auth_source.name}") if logger && user.auth_source
Chris@0:         end
Chris@0:       end
Chris@0:     end    
Chris@0:     user.update_attribute(:last_login_on, Time.now) if user && !user.new_record?
Chris@0:     user
Chris@0:   rescue => text
Chris@0:     raise text
Chris@0:   end
Chris@0:   
Chris@0:   # Returns the user who matches the given autologin +key+ or nil
Chris@0:   def self.try_to_autologin(key)
Chris@0:     tokens = Token.find_all_by_action_and_value('autologin', key)
Chris@0:     # Make sure there's only 1 token that matches the key
Chris@0:     if tokens.size == 1
Chris@0:       token = tokens.first
Chris@0:       if (token.created_on > Setting.autologin.to_i.day.ago) && token.user && token.user.active?
Chris@0:         token.user.update_attribute(:last_login_on, Time.now)
Chris@0:         token.user
Chris@0:       end
Chris@0:     end
Chris@0:   end
Chris@0: 	
Chris@0:   # Return user's full name for display
Chris@0:   def name(formatter = nil)
Chris@0:     if formatter
Chris@0:       eval('"' + (USER_FORMATS[formatter] || USER_FORMATS[:firstname_lastname]) + '"')
Chris@0:     else
Chris@0:       @name ||= eval('"' + (USER_FORMATS[Setting.user_format] || USER_FORMATS[:firstname_lastname]) + '"')
Chris@0:     end
Chris@0:   end
Chris@0:   
Chris@0:   def active?
Chris@0:     self.status == STATUS_ACTIVE
Chris@0:   end
Chris@0: 
Chris@0:   def registered?
Chris@0:     self.status == STATUS_REGISTERED
Chris@0:   end
Chris@0:     
Chris@0:   def locked?
Chris@0:     self.status == STATUS_LOCKED
Chris@0:   end
Chris@0: 
Chris@14:   def activate
Chris@14:     self.status = STATUS_ACTIVE
Chris@14:   end
Chris@14: 
Chris@14:   def register
Chris@14:     self.status = STATUS_REGISTERED
Chris@14:   end
Chris@14: 
Chris@14:   def lock
Chris@14:     self.status = STATUS_LOCKED
Chris@14:   end
Chris@14: 
Chris@14:   def activate!
Chris@14:     update_attribute(:status, STATUS_ACTIVE)
Chris@14:   end
Chris@14: 
Chris@14:   def register!
Chris@14:     update_attribute(:status, STATUS_REGISTERED)
Chris@14:   end
Chris@14: 
Chris@14:   def lock!
Chris@14:     update_attribute(:status, STATUS_LOCKED)
Chris@14:   end
Chris@14: 
Chris@245:   # Returns true if +clear_password+ is the correct user's password, otherwise false
Chris@0:   def check_password?(clear_password)
Chris@0:     if auth_source_id.present?
Chris@0:       auth_source.authenticate(self.login, clear_password)
Chris@0:     else
Chris@245:       User.hash_password("#{salt}#{User.hash_password clear_password}") == hashed_password
Chris@0:     end
Chris@0:   end
Chris@245:   
Chris@245:   # Generates a random salt and computes hashed_password for +clear_password+
Chris@245:   # The hashed password is stored in the following form: SHA1(salt + SHA1(password))
Chris@245:   def salt_password(clear_password)
Chris@245:     self.salt = User.generate_salt
Chris@245:     self.hashed_password = User.hash_password("#{salt}#{User.hash_password clear_password}")
Chris@245:   end
Chris@0: 
Chris@0:   # Does the backend storage allow this user to change their password?
Chris@0:   def change_password_allowed?
Chris@0:     return true if auth_source_id.blank?
Chris@0:     return auth_source.allow_password_changes?
Chris@0:   end
Chris@0: 
Chris@0:   # Generate and set a random password.  Useful for automated user creation
Chris@0:   # Based on Token#generate_token_value
Chris@0:   #
Chris@0:   def random_password
Chris@0:     chars = ("a".."z").to_a + ("A".."Z").to_a + ("0".."9").to_a
Chris@0:     password = ''
Chris@0:     40.times { |i| password << chars[rand(chars.size-1)] }
Chris@0:     self.password = password
Chris@0:     self.password_confirmation = password
Chris@0:     self
Chris@0:   end
Chris@0:   
Chris@0:   def pref
Chris@0:     self.preference ||= UserPreference.new(:user => self)
Chris@0:   end
Chris@0:   
Chris@0:   def time_zone
Chris@0:     @time_zone ||= (self.pref.time_zone.blank? ? nil : ActiveSupport::TimeZone[self.pref.time_zone])
Chris@0:   end
Chris@0:   
Chris@0:   def wants_comments_in_reverse_order?
Chris@0:     self.pref[:comments_sorting] == 'desc'
Chris@0:   end
Chris@0:   
Chris@0:   # Return user's RSS key (a 40 chars long string), used to access feeds
Chris@0:   def rss_key
Chris@0:     token = self.rss_token || Token.create(:user => self, :action => 'feeds')
Chris@0:     token.value
Chris@0:   end
Chris@0: 
Chris@0:   # Return user's API key (a 40 chars long string), used to access the API
Chris@0:   def api_key
Chris@0:     token = self.api_token || self.create_api_token(:action => 'api')
Chris@0:     token.value
Chris@0:   end
Chris@0:   
Chris@0:   # Return an array of project ids for which the user has explicitly turned mail notifications on
Chris@0:   def notified_projects_ids
Chris@0:     @notified_projects_ids ||= memberships.select {|m| m.mail_notification?}.collect(&:project_id)
Chris@0:   end
Chris@0:   
Chris@0:   def notified_project_ids=(ids)
Chris@0:     Member.update_all("mail_notification = #{connection.quoted_false}", ['user_id = ?', id])
Chris@0:     Member.update_all("mail_notification = #{connection.quoted_true}", ['user_id = ? AND project_id IN (?)', id, ids]) if ids && !ids.empty?
Chris@0:     @notified_projects_ids = nil
Chris@0:     notified_projects_ids
Chris@0:   end
Chris@0: 
Chris@128:   def valid_notification_options
Chris@128:     self.class.valid_notification_options(self)
Chris@128:   end
Chris@128: 
chris@37:   # Only users that belong to more than 1 project can select projects for which they are notified
Chris@128:   def self.valid_notification_options(user=nil)
chris@37:     # Note that @user.membership.size would fail since AR ignores
chris@37:     # :include association option when doing a count
Chris@128:     if user.nil? || user.memberships.length < 1
Chris@128:       MAIL_NOTIFICATION_OPTIONS.reject {|option| option.first == 'selected'}
chris@37:     else
chris@37:       MAIL_NOTIFICATION_OPTIONS
chris@37:     end
chris@37:   end
chris@37: 
Chris@0:   # Find a user account by matching the exact login and then a case-insensitive
Chris@0:   # version.  Exact matches will be given priority.
Chris@0:   def self.find_by_login(login)
Chris@0:     # force string comparison to be case sensitive on MySQL
Chris@0:     type_cast = (ActiveRecord::Base.connection.adapter_name == 'MySQL') ? 'BINARY' : ''
Chris@0:     
Chris@0:     # First look for an exact match
Chris@0:     user = first(:conditions => ["#{type_cast} login = ?", login])
Chris@0:     # Fail over to case-insensitive if none was found
Chris@0:     user ||= first(:conditions => ["#{type_cast} LOWER(login) = ?", login.to_s.downcase])
Chris@0:   end
Chris@0: 
Chris@0:   def self.find_by_rss_key(key)
Chris@0:     token = Token.find_by_value(key)
Chris@0:     token && token.user.active? ? token.user : nil
Chris@0:   end
Chris@0:   
Chris@0:   def self.find_by_api_key(key)
Chris@0:     token = Token.find_by_action_and_value('api', key)
Chris@0:     token && token.user.active? ? token.user : nil
Chris@0:   end
Chris@0:   
Chris@0:   # Makes find_by_mail case-insensitive
Chris@0:   def self.find_by_mail(mail)
Chris@0:     find(:first, :conditions => ["LOWER(mail) = ?", mail.to_s.downcase])
Chris@0:   end
Chris@0:   
Chris@0:   def to_s
Chris@0:     name
Chris@0:   end
Chris@0:   
Chris@0:   # Returns the current day according to user's time zone
Chris@0:   def today
Chris@0:     if time_zone.nil?
Chris@0:       Date.today
Chris@0:     else
Chris@0:       Time.now.in_time_zone(time_zone).to_date
Chris@0:     end
Chris@0:   end
Chris@0:   
Chris@0:   def logged?
Chris@0:     true
Chris@0:   end
Chris@0:   
Chris@0:   def anonymous?
Chris@0:     !logged?
Chris@0:   end
Chris@0:   
Chris@0:   # Return user's roles for project
Chris@0:   def roles_for_project(project)
Chris@0:     roles = []
Chris@0:     # No role on archived projects
Chris@0:     return roles unless project && project.active?
Chris@0:     if logged?
Chris@0:       # Find project membership
Chris@0:       membership = memberships.detect {|m| m.project_id == project.id}
Chris@0:       if membership
Chris@0:         roles = membership.roles
Chris@0:       else
Chris@0:         @role_non_member ||= Role.non_member
Chris@0:         roles << @role_non_member
Chris@0:       end
Chris@0:     else
Chris@0:       @role_anonymous ||= Role.anonymous
Chris@0:       roles << @role_anonymous
Chris@0:     end
Chris@0:     roles
Chris@0:   end
Chris@0:   
Chris@0:   # Return true if the user is a member of project
Chris@0:   def member_of?(project)
Chris@0:     !roles_for_project(project).detect {|role| role.member?}.nil?
Chris@0:   end
Chris@0:   
Chris@441:   # Returns a hash of user's projects grouped by roles
Chris@441:   def projects_by_role
Chris@441:     return @projects_by_role if @projects_by_role
Chris@441:     
Chris@441:     @projects_by_role = Hash.new {|h,k| h[k]=[]}
Chris@441:     memberships.each do |membership|
Chris@441:       membership.roles.each do |role|
Chris@441:         @projects_by_role[role] << membership.project if membership.project
Chris@441:       end
Chris@441:     end
Chris@441:     @projects_by_role.each do |role, projects|
Chris@441:       projects.uniq!
Chris@441:     end
Chris@441:   
Chris@441:     @projects_by_role
Chris@441:   end
Chris@441:   
chris@37:   # Return true if the user is allowed to do the specified action on a specific context
chris@37:   # Action can be:
Chris@0:   # * a parameter-like Hash (eg. :controller => 'projects', :action => 'edit')
Chris@0:   # * a permission Symbol (eg. :edit_project)
chris@37:   # Context can be:
chris@37:   # * a project : returns true if user is allowed to do the specified action on this project
Chris@441:   # * an array of projects : returns true if user is allowed on every project
chris@37:   # * nil with options[:global] set : check if user has at least one role allowed for this action, 
chris@37:   #   or falls back to Non Member / Anonymous permissions depending if the user is logged
Chris@441:   def allowed_to?(action, context, options={}, &block)
chris@37:     if context && context.is_a?(Project)
Chris@0:       # No action allowed on archived projects
chris@37:       return false unless context.active?
Chris@0:       # No action allowed on disabled modules
chris@37:       return false unless context.allows_to?(action)
Chris@0:       # Admin users are authorized for anything else
Chris@0:       return true if admin?
Chris@0:       
chris@37:       roles = roles_for_project(context)
Chris@0:       return false unless roles
Chris@441:       roles.detect {|role|
Chris@441:         (context.is_public? || role.member?) &&
Chris@441:         role.allowed_to?(action) &&
Chris@441:         (block_given? ? yield(role, self) : true)
Chris@441:       }
chris@37:     elsif context && context.is_a?(Array)
chris@37:       # Authorize if user is authorized on every element of the array
chris@37:       context.map do |project|
Chris@441:         allowed_to?(action, project, options, &block)
chris@37:       end.inject do |memo,allowed|
chris@37:         memo && allowed
chris@37:       end
Chris@0:     elsif options[:global]
Chris@0:       # Admin users are always authorized
Chris@0:       return true if admin?
Chris@0:       
Chris@0:       # authorize if user has at least one role that has this permission
Chris@0:       roles = memberships.collect {|m| m.roles}.flatten.uniq
Chris@441:       roles << (self.logged? ? Role.non_member : Role.anonymous)
Chris@441:       roles.detect {|role|
Chris@441:         role.allowed_to?(action) &&
Chris@441:         (block_given? ? yield(role, self) : true)
Chris@441:       }
Chris@0:     else
Chris@0:       false
Chris@0:     end
Chris@0:   end
chris@22: 
chris@22:   # Is the user allowed to do the specified action on any project?
chris@22:   # See allowed_to? for the actions and valid options.
Chris@441:   def allowed_to_globally?(action, options, &block)
Chris@441:     allowed_to?(action, nil, options.reverse_merge(:global => true), &block)
chris@22:   end
Chris@119: 
Chris@119:   safe_attributes 'login',
Chris@119:     'firstname',
Chris@119:     'lastname',
Chris@119:     'mail',
Chris@119:     'mail_notification',
Chris@119:     'language',
Chris@119:     'custom_field_values',
Chris@119:     'custom_fields',
Chris@119:     'identity_url'
Chris@119:   
Chris@119:   safe_attributes 'status',
Chris@119:     'auth_source_id',
Chris@119:     :if => lambda {|user, current_user| current_user.admin?}
Chris@119:   
Chris@119:   safe_attributes 'group_ids',
Chris@119:     :if => lambda {|user, current_user| current_user.admin? && !user.new_record?}
Chris@0:   
chris@37:   # Utility method to help check if a user should be notified about an
chris@37:   # event.
chris@37:   #
chris@37:   # TODO: only supports Issue events currently
chris@37:   def notify_about?(object)
Chris@119:     case mail_notification
Chris@119:     when 'all'
chris@37:       true
Chris@119:     when 'selected'
Chris@210:       # user receives notifications for created/assigned issues on unselected projects
Chris@210:       if object.is_a?(Issue) && (object.author == self || object.assigned_to == self)
Chris@210:         true
Chris@210:       else
Chris@210:         false
Chris@210:       end
Chris@119:     when 'none'
chris@37:       false
Chris@119:     when 'only_my_events'
chris@37:       if object.is_a?(Issue) && (object.author == self || object.assigned_to == self)
chris@37:         true
chris@37:       else
chris@37:         false
chris@37:       end
Chris@119:     when 'only_assigned'
chris@37:       if object.is_a?(Issue) && object.assigned_to == self
chris@37:         true
chris@37:       else
chris@37:         false
chris@37:       end
Chris@119:     when 'only_owner'
chris@37:       if object.is_a?(Issue) && object.author == self
chris@37:         true
chris@37:       else
chris@37:         false
chris@37:       end
chris@37:     else
chris@37:       false
chris@37:     end
chris@37:   end
chris@37:   
Chris@0:   def self.current=(user)
Chris@0:     @current_user = user
Chris@0:   end
Chris@0:   
Chris@0:   def self.current
Chris@0:     @current_user ||= User.anonymous
Chris@0:   end
Chris@0:   
Chris@0:   # Returns the anonymous user.  If the anonymous user does not exist, it is created.  There can be only
Chris@0:   # one anonymous user per database.
Chris@0:   def self.anonymous
Chris@0:     anonymous_user = AnonymousUser.find(:first)
Chris@0:     if anonymous_user.nil?
Chris@0:       anonymous_user = AnonymousUser.create(:lastname => 'Anonymous', :firstname => '', :mail => '', :login => '', :status => 0)
Chris@0:       raise 'Unable to create the anonymous user.' if anonymous_user.new_record?
Chris@0:     end
Chris@0:     anonymous_user
Chris@0:   end
Chris@245: 
Chris@245:   # Salts all existing unsalted passwords
Chris@245:   # It changes password storage scheme from SHA1(password) to SHA1(salt + SHA1(password))
Chris@245:   # This method is used in the SaltPasswords migration and is to be kept as is
Chris@245:   def self.salt_unsalted_passwords!
Chris@245:     transaction do
Chris@245:       User.find_each(:conditions => "salt IS NULL OR salt = ''") do |user|
Chris@245:         next if user.hashed_password.blank?
Chris@245:         salt = User.generate_salt
Chris@245:         hashed_password = User.hash_password("#{salt}#{user.hashed_password}")
Chris@245:         User.update_all("salt = '#{salt}', hashed_password = '#{hashed_password}'", ["id = ?", user.id] )
Chris@245:       end
Chris@245:     end
Chris@245:   end
Chris@0:   
Chris@0:   protected
Chris@0:   
Chris@0:   def validate
Chris@0:     # Password length validation based on setting
Chris@0:     if !password.nil? && password.size < Setting.password_min_length.to_i
Chris@0:       errors.add(:password, :too_short, :count => Setting.password_min_length.to_i)
Chris@0:     end
Chris@0:   end
Chris@0:   
Chris@0:   private
Chris@128:   
Chris@128:   # Removes references that are not handled by associations
Chris@128:   # Things that are not deleted are reassociated with the anonymous user
Chris@128:   def remove_references_before_destroy
Chris@128:     return if self.id.nil?
Chris@128:     
Chris@128:     substitute = User.anonymous
Chris@128:     Attachment.update_all ['author_id = ?', substitute.id], ['author_id = ?', id]
Chris@128:     Comment.update_all ['author_id = ?', substitute.id], ['author_id = ?', id]
Chris@128:     Issue.update_all ['author_id = ?', substitute.id], ['author_id = ?', id]
Chris@128:     Issue.update_all 'assigned_to_id = NULL', ['assigned_to_id = ?', id]
Chris@128:     Journal.update_all ['user_id = ?', substitute.id], ['user_id = ?', id]
Chris@128:     JournalDetail.update_all ['old_value = ?', substitute.id.to_s], ["property = 'attr' AND prop_key = 'assigned_to_id' AND old_value = ?", id.to_s]
Chris@128:     JournalDetail.update_all ['value = ?', substitute.id.to_s], ["property = 'attr' AND prop_key = 'assigned_to_id' AND value = ?", id.to_s]
Chris@128:     Message.update_all ['author_id = ?', substitute.id], ['author_id = ?', id]
Chris@128:     News.update_all ['author_id = ?', substitute.id], ['author_id = ?', id]
Chris@128:     # Remove private queries and keep public ones
Chris@128:     Query.delete_all ['user_id = ? AND is_public = ?', id, false]
Chris@128:     Query.update_all ['user_id = ?', substitute.id], ['user_id = ?', id]
Chris@128:     TimeEntry.update_all ['user_id = ?', substitute.id], ['user_id = ?', id]
Chris@128:     Token.delete_all ['user_id = ?', id]
Chris@128:     Watcher.delete_all ['user_id = ?', id]
Chris@128:     WikiContent.update_all ['author_id = ?', substitute.id], ['author_id = ?', id]
Chris@128:     WikiContent::Version.update_all ['author_id = ?', substitute.id], ['author_id = ?', id]
Chris@128:   end
Chris@0:     
Chris@0:   # Return password digest
Chris@0:   def self.hash_password(clear_password)
Chris@0:     Digest::SHA1.hexdigest(clear_password || "")
Chris@0:   end
Chris@245:   
Chris@245:   # Returns a 128bits random salt as a hex string (32 chars long)
Chris@245:   def self.generate_salt
Chris@245:     ActiveSupport::SecureRandom.hex(16)
Chris@245:   end
Chris@245:   
Chris@0: end
Chris@0: 
Chris@0: class AnonymousUser < User
Chris@0:   
Chris@0:   def validate_on_create
Chris@0:     # There should be only one AnonymousUser in the database
Chris@0:     errors.add_to_base 'An anonymous user already exists.' if AnonymousUser.find(:first)
Chris@0:   end
Chris@0:   
Chris@0:   def available_custom_fields
Chris@0:     []
Chris@0:   end
Chris@0:   
Chris@0:   # Overrides a few properties
Chris@0:   def logged?; false end
Chris@0:   def admin; false end
Chris@0:   def name(*args); I18n.t(:label_user_anonymous) end
Chris@0:   def mail; nil end
Chris@0:   def time_zone; nil end
Chris@0:   def rss_key; nil end
Chris@128:   
Chris@128:   # Anonymous user can not be destroyed
Chris@128:   def destroy
Chris@128:     false
Chris@128:   end
Chris@0: end