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|
# frozen_string_literal: true
# == Schema Information
#
# Table name: user_roles
#
# id :bigint(8) not null, primary key
# name :string default(""), not null
# color :string default(""), not null
# position :integer default(0), not null
# permissions :bigint(8) default(0), not null
# highlighted :boolean default(FALSE), not null
# created_at :datetime not null
# updated_at :datetime not null
#
class UserRole < ApplicationRecord
FLAGS = {
administrator: (1 << 0),
view_devops: (1 << 1),
view_audit_log: (1 << 2),
view_dashboard: (1 << 3),
manage_reports: (1 << 4),
manage_federation: (1 << 5),
manage_settings: (1 << 6),
manage_blocks: (1 << 7),
manage_taxonomies: (1 << 8),
manage_appeals: (1 << 9),
manage_users: (1 << 10),
manage_invites: (1 << 11),
manage_rules: (1 << 12),
manage_announcements: (1 << 13),
manage_custom_emojis: (1 << 14),
manage_webhooks: (1 << 15),
invite_users: (1 << 16),
manage_roles: (1 << 17),
manage_user_access: (1 << 18),
delete_user_data: (1 << 19),
}.freeze
module Flags
NONE = 0
ALL = FLAGS.values.reduce(&:|)
DEFAULT = FLAGS[:invite_users]
CATEGORIES = {
invites: %i(
invite_users
).freeze,
moderation: %w(
view_dashboard
view_audit_log
manage_users
manage_user_access
delete_user_data
manage_reports
manage_appeals
manage_federation
manage_blocks
manage_taxonomies
manage_invites
).freeze,
administration: %w(
manage_settings
manage_rules
manage_roles
manage_webhooks
manage_custom_emojis
manage_announcements
).freeze,
devops: %w(
view_devops
).freeze,
special: %i(
administrator
).freeze,
}.freeze
end
attr_writer :current_account
validates :name, presence: true, unless: :everyone?
validates :color, format: { with: /\A#?(?:[A-F0-9]{3}){1,2}\z/i }, unless: -> { color.blank? }
validate :validate_permissions_elevation
validate :validate_position_elevation
validate :validate_dangerous_permissions
validate :validate_own_role_edition
before_validation :set_position
scope :assignable, -> { where.not(id: -99).order(position: :asc) }
has_many :users, inverse_of: :role, foreign_key: 'role_id', dependent: :nullify
def self.nobody
@nobody ||= UserRole.new(permissions: Flags::NONE, position: -1)
end
def self.everyone
UserRole.find(-99)
rescue ActiveRecord::RecordNotFound
UserRole.create!(id: -99, permissions: Flags::DEFAULT)
end
def self.that_can(*any_of_privileges)
all.select { |role| role.can?(*any_of_privileges) }
end
def everyone?
id == -99
end
def nobody?
id.nil?
end
def permissions_as_keys
FLAGS.keys.select { |privilege| permissions & FLAGS[privilege] == FLAGS[privilege] }.map(&:to_s)
end
def permissions_as_keys=(value)
self.permissions = value.map(&:presence).compact.reduce(Flags::NONE) { |bitmask, privilege| FLAGS.key?(privilege.to_sym) ? (bitmask | FLAGS[privilege.to_sym]) : bitmask }
end
def can?(*any_of_privileges)
any_of_privileges.any? { |privilege| in_permissions?(privilege) }
end
def overrides?(other_role)
other_role.nil? || position > other_role.position
end
def computed_permissions
# If called on the everyone role, no further computation needed
return permissions if everyone?
# If called on the nobody role, no permissions are there to be given
return Flags::NONE if nobody?
# Otherwise, compute permissions based on special conditions
@computed_permissions ||= begin
permissions = self.class.everyone.permissions | self.permissions
if permissions & FLAGS[:administrator] == FLAGS[:administrator]
Flags::ALL
else
permissions
end
end
end
private
def in_permissions?(privilege)
raise ArgumentError, "Unknown privilege: #{privilege}" unless FLAGS.key?(privilege)
computed_permissions & FLAGS[privilege] == FLAGS[privilege]
end
def set_position
self.position = -1 if everyone?
end
def validate_own_role_edition
return unless defined?(@current_account) && @current_account.user_role.id == id
errors.add(:permissions_as_keys, :own_role) if permissions_changed?
errors.add(:position, :own_role) if position_changed?
end
def validate_permissions_elevation
errors.add(:permissions_as_keys, :elevated) if defined?(@current_account) && @current_account.user_role.computed_permissions & permissions != permissions
end
def validate_position_elevation
errors.add(:position, :elevated) if defined?(@current_account) && @current_account.user_role.position < position
end
def validate_dangerous_permissions
errors.add(:permissions_as_keys, :dangerous) if everyone? && Flags::DEFAULT & permissions != permissions
end
end
|
