diff --git a/app/models/domain.rb b/app/models/domain.rb index 56e3fe5..3942117 100644 --- a/app/models/domain.rb +++ b/app/models/domain.rb @@ -1,401 +1,402 @@ class Domain < ActiveRecord::Base class NotAChild < StandardError; end self.inheritance_column = :nx # List all supported domain types. def self.domain_types [ 'NATIVE', 'MASTER', 'SLAVE', ] end # List domain types that can be created. def self.allowed_domain_types domain_types - WebDNS.settings[:prohibit_domain_types] end # List parent authorities def self.dnssec_parent_authorities WebDNS.settings[:dnssec_parent_authorities].keys.map(&:to_s) end # Fire event after transaction commmit # Changing state inside a hook messes things up, # this trick handles that attr_accessor :fire_event belongs_to :group has_many :jobs has_many :opt_outs, class_name: 'Subscription', dependent: :delete_all has_many :records # BUG in bump_serial_trigger has_one :soa, -> { unscope(where: :type).where(type: 'soa') }, class_name: SOA belongs_to :dnssec_policy validates :group_id, presence: true validates :name, uniqueness: true, presence: true validates :type, presence: true, inclusion: { in: domain_types } validates :master, presence: true, ipv4: true, if: :slave? validates :dnssec, inclusion: { in: [false] }, unless: :dnssec_elegible? validates :dnssec_parent_authority, inclusion: { in: dnssec_parent_authorities }, if: :dnssec? validates :dnssec_parent, hostname: true, if: :dnssec? validates :dnssec_policy_id, presence: true, if: :dnssec? after_create :generate_soa after_create :generate_ns after_create :generate_subscriptions after_create :install before_save :check_convert before_save :check_dnssec_parent_authority, if: :dnssec? after_commit :after_commit_event attr_writer :serial_strategy def self.dnssec_progress(current_state) progress = [ :pending_signing, # 1/3 :wait_for_ready, # 2/3 :pending_ds] # 3/3 idx = progress.index(current_state.to_sym) return if idx.nil? [idx+1, progress.size].join('/') end state_machine initial: :initial do after_transition(any => :pending_install) { |domain, _t| Job.add_domain(domain) } after_transition(any => :pending_remove) { |domain, _t| Job.shutdown_domain(domain) } after_transition(any => :pending_ds_removal) { |domain, _t| Job.dnssec_drop_ds(domain) } after_transition(any => :pending_signing) { |domain, _t| Job.dnssec_sign(domain) } after_transition(any => :wait_for_ready) { |domain, _t| Job.wait_for_ready(domain) } after_transition(any => :pending_ds) { |domain, t| Job.dnssec_push_ds(domain, *t.args) } after_transition(any => :pending_ds_rollover) { |domain, t| Job.dnssec_rollover_ds(domain, *t.args) } after_transition(any => :pending_plain) { |domain, _t| Job.convert_to_plain(domain) } after_transition(any => :destroy) { |domain, _t| domain.destroy } # User events event :install do transition initial: :pending_install end event :dnssec_sign do transition operational: :pending_signing end event :signed do transition pending_signing: :wait_for_ready end event :push_ds do transition wait_for_ready: :pending_ds, operational: :pending_ds_rollover end event :plain_convert do transition operational: :pending_plain end event :remove do transition [:operational, :pending_ds_removal] => :pending_remove end event :full_remove do transition operational: :pending_ds_removal end # Machine events event :installed do transition pending_install: :operational end event :converted do transition [:pending_ds, :pending_plain] => :operational end event :complete_rollover do transition pending_ds_rollover: :operational end event :cleaned_up do transition pending_remove: :destroy end event :ksk_rollover_detected do transition operational: :ksk_rollover end end # Returns true if this domain is elegigble for DNSSEC def dnssec_elegible? return false if slave? true end # Returns the zone serial if a SOA record exists def serial return if !soa soa.serial end # Get the zone's serial strategy. # # Returns one of the supported serial strategies. def serial_strategy @serial_strategy ||= WebDNS.settings[:serial_strategy] end # Returns true if this a reverse zone. def reverse? name.end_with?('.in-addr.arpa') || name.end_with?('.ip6.arpa') end # Returns true if this a ENUM zone. def enum? name.end_with?('.e164.arpa') end # Returns true if this is a slave zone. def slave? type == 'SLAVE' end def to_export Hash[ :id, id, :name, name, :group, group.name, ].with_indifferent_access end def to_api Hash[ :name, name, :slave, slave?, :group, group.name, ].with_indifferent_access end # Compute subnet for reverse records def subnet return if not reverse? if name.end_with?('.in-addr.arpa') subnet_v4 elsif name.end_with?('.ip6.arpa') subnet_v6 end end def self.replace_ds(parent, child, records) records ||= [] parent = find_by_name!(parent) fail NotAChild if not child.end_with?(parent.name) existing = parent.records.where(name: child, type: 'DS') recs = records.map { |rec| DS.new(domain: parent, name: child, content: rec) } ActiveRecord::Base.transaction do existing.destroy_all recs.map(&:save!) end end # Apply api bulk to operations to the zone # # 1) Deletions # 2) Upserts # 3) Additions def api_bulk(opts) api_deletes = opts[:deletes] || [] api_upserts = opts[:upserts] || [] api_additions = opts[:additions] || [] api_delete_errors = {} deletes = [] additions = {} api_deletes.each { |del| rec = records.find_by(del) # Fail-fast if record doesn't exist if rec.nil? return [{}, { deletes: { del: 'record not found'}}] end deletes << rec.id } # We delete records matching the same name & type api_upserts.each { |ups| query = ups.slice(:name, :type) + query[:name] = Record::to_fqdn(query[:name], name) existing = records.where(query).to_a # Skip upsert if we are trying to save the same record next if existing.one? && ups.all? { |k, v| existing.first.to_api[k] == v } deletes += existing.map(&:id) api_additions << ups } api_additions.each { |add| additions[add] = add } ops, errors = bulk(deletes: deletes, additions: additions) # Serialize the response for API api_ops = {} api_errors = {} # ops ops.each { |op, recs| api_ops[op] = recs.map(&:to_api) } # errors if errors.any? errors.each { |op, err| api_errors[op] = err.map { |rec, err| { operation: rec, error: err } } } end # This is a bit ugly, we return an ops hash with the original bulk # responses so we can feed it to record notification. [api_ops, api_errors, ops] end # Apply bulk to operations to the zones # # 1) Deletions # 2) Changes # 3) Additions def bulk(opts) deletes = opts[:deletes] || [] changes = opts[:changes] || {} additions = opts[:additions] || {} errors = Hash.new { |h, k| h[k] = {} } operations = Hash.new { |h, k| h[k] = [] } ActiveRecord::Base.transaction do # Deletes to_delete = records.where(id: deletes).index_by(&:id) deletes.each { |rec_id| if rec = to_delete[Integer(rec_id)] rec.destroy operations[:deletes] << rec next end errors[:deletes][rec_id] = 'Deleted record not found' } # Changes to_change = records.where(id: changes.keys).index_by(&:id) changes.each {|rec_id, changes| if rec = to_change[Integer(rec_id)] operations[:changes] << rec errors[:changes][rec_id] = rec.errors.full_messages.join(', ') if !rec.update(changes) next end errors[:changes][rec_id] = 'Changed record not found' } # Additions additions.each { |inc, attrs| rec = records.new(attrs) operations[:additions] << rec errors[:additions][inc] = rec.errors.full_messages.join(', ') if !rec.save } raise ActiveRecord::Rollback if errors.any? end [operations, errors] end private def subnet_v4 # get ip octets (remove .in-addr.arpa) octets = name.split('.')[0...-2].reverse return if octets.any? { |_| false } mask = 8 * octets.size octets += [0, 0, 0, 0] ip = IPAddr.new octets[0, 4].join('.') [ip, mask].join('/') end def subnet_v6 nibbles = name.split('.')[0...-2].reverse return if nibbles.any? { |_| false } mask = 4 * nibbles.size nibbles += [0] * 32 ip = IPAddr.new nibbles[0, 32].in_groups_of(4).map(&:join).join(':') [ip, mask].join('/') end # Hooks def generate_soa soa_record = SOA.new(domain: self) soa_record.save! end def generate_ns return if slave? return if WebDNS.settings[:default_ns].empty? WebDNS.settings[:default_ns].each { |ns| Record.find_or_create_by!(domain: self, type: 'NS', name: '', content: ns) } end def generate_subscriptions group.users.where(notifications: false).each { |u| opt_outs.create(user: u) } end def check_convert return if !dnssec_changed? event = dnssec ? :dnssec_sign : :plain_convert if state_events.include?(event) self.fire_event = event # Schedule event for after commit return true end errors.add(:dnssec, 'You cannot modify dnssec settings in this state!') false end def check_dnssec_parent_authority cfg = WebDNS.settings[:dnssec_parent_authorities][dnssec_parent_authority.to_sym] return if !cfg[:valid] return true if cfg[:valid].call(dnssec_parent) errors.add(:dnssec_parent_authority, 'Parent zone is not accepted for the selected parent authority!') false end def after_commit_event return if !fire_event fire_state_event(fire_event) self.fire_event = nil end end diff --git a/app/models/record.rb b/app/models/record.rb index 69492eb..586ef12 100644 --- a/app/models/record.rb +++ b/app/models/record.rb @@ -1,322 +1,328 @@ require 'ipaddr' require_dependency 'drop_privileges_validator' class Record < ActiveRecord::Base belongs_to :domain # Powerdns inserts empty records on slave zones, # we want to hide them # # http://mailman.powerdns.com/pipermail/pdns-users/2013-December/010389.html default_scope { where.not(type: nil) } # List all supported DNS RR types. def self.record_types [ 'A', 'AAAA', 'CNAME', 'MX', 'TXT', 'SPF', 'SRV', 'SSHFP', 'SOA', 'NS', 'PTR', 'NAPTR', 'DS' ] end # List types usually used in forward zones. def self.forward_records record_types - ['SOA', 'PTR'] end # List types usually used in reverse zones. def self.reverse_records ['PTR', 'CNAME', 'TXT', 'NS', 'NAPTR', 'DS'] end # List types usually used in enum zones. def self.enum_records ['NAPTR', 'CNAME', 'TXT', 'NS', 'DS'] end # List types that can be touched by a simple user. def self.allowed_record_types record_types - WebDNS.settings[:prohibit_records_types] end validates :name, presence: true validates :type, inclusion: { in: record_types } # http://mark.lindsey.name/2009/03/never-use-dns-ttl-of-zero-0.html validates_numericality_of :ttl, allow_nil: true, # Default pdns TTL only_integer: true, greater_than: 0, less_than_or_equal_to: 2_147_483_647 # Don't allow the following actions on drop privileges mode validate :no_touching_for_slave_zones, if: -> { domain.slave? } validates_drop_privileges :type, message: 'You cannot touch that record!', unless: -> { Record.allowed_record_types.include?(type) } validates_drop_privileges :name, message: 'You cannot touch top level NS records!', if: -> { type == 'NS' && domain_record? } before_validation :guess_reverse_name before_validation :set_name after_save :update_zone_serial after_destroy :update_zone_serial before_create :generate_classless_delegations, unless: -> { domain.slave? } before_destroy :delete_classless_delegations, unless: -> { domain.slave? } # Smart sort a list of records. # # Order by: # * Top level records # * Record name # * SOA # * NS # * Friendly type # * Priority # * Content # # records - The list of records to order. # # Returns the list sorted. def self.smart_order(records) records.sort_by { |r| [ r.domain_record? ? 0 : 1, # Zone records r.classless_delegated? ? 1 : 0, r.name, r.type == 'SOA' ? 0 : 1, r.type == 'NS' ? 0 : 1, record_types.index(r.type), # Friendly type r.prio || 0, r.content ] } end def self.search(query) wild_search = "%#{query}%" # !index_friendly where('name like :q or content like :q', q: wild_search) end # Get the a short name for the record (without the zone suffix). # # Returns a string. def short return '' if name == domain.name return '' if name.blank? File.basename(name, ".#{domain.name}") end # Returns true if this is a zone record. def domain_record? name.blank? || name == domain.name end # Find out if the record is edittable. # # by - Editable by :user or :admin. # # Returns true if the record is editable. def editable?(by = :user) return false if domain.slave? return false if classless_delegated? case by when :user return false unless Record.allowed_record_types.include?(type) return false if type == 'NS' && domain_record? end true end # Find out this record type supports priorities. # # We set this to false by default, record types that support priorities. # shoule override this. # # Returns true this record type support priorities. def supports_prio? false end # Make sure rails generates record specific urls for all record types. # # Overrides default rails STI behavior. def self.model_name return super if self == Record Record.model_name end # Generate the usual admin friendly DNS record line. # # Returns a string. def to_dns [name, ttl, 'IN', type, supports_prio? ? prio : nil, content].compact.join(' ') end # Generate a shorter version of the DNS record line. # # Returns a string. def to_short_dns [name, 'IN', type].join(' ') end def to_api Hash[ :name, name, :content, content, :type, type, :ttl, ttl, :prio, prio, :disabled, disabled ].with_indifferent_access end def classless_delegated? return false if not type == 'CNAME' return false if not domain.name.end_with?('.in-addr.arpa') network, mask = parse_delegation(content) return false if network.nil? octet = name.split('.').first.to_i return true if octet >= network return true if octet <= network + 2 ^ (32 - mask) - 1 # max false end def classless_delegation? return true if classless_delegation false end def as_bulky_json Hash[ id: id, name: name, type: type, ttl: ttl, prio: prio, content: content, disabled: disabled ] end private # Validations def no_touching_for_slave_zones # Allow automatic SOA creation for slave zones # powerdns needs a valid serial to compare it with master return if type == 'SOA' && validation_context == :create errors.add(:type, 'This is a slave zone!') end # Hooks def guess_reverse_name return if not type == 'PTR' return if not domain.reverse? return if name.blank? reverse = IPAddr.new(name).reverse self.name = reverse if reverse.end_with?(domain.name) rescue IPAddr::InvalidAddressError # rubycop:disable HandleExceptions end # Powerdns expects full domain names def set_name self.name = domain.name if name.blank? self.name = "#{name}.#{domain.name}" if not name.end_with?(domain.name) end def remove_terminating_dot self.content = content.gsub(/\.+\Z/, '') end def update_zone_serial # SOA records handle serial themselves return true if type == 'SOA' return true if !domain domain.soa.bump_serial! end def classless_delegation return if not type == 'NS' return if not domain.name.end_with?('.in-addr.arpa') network, mask = parse_delegation(name) return if network.nil? range = IPAddr.new("0.0.0.#{network}/#{mask}").to_range return if !range.first.to_s.end_with?(".#{network}") range.map { |ip| octet = ip.to_s.split('.').last "#{octet}.#{domain.name}" } end def parse_delegation(value) first, _rest = value.split('.', 2) first.gsub!('-', '/') return if !first['/'] network, mask = first.split('/', 2).map { |i| Integer(i).abs } return if [network, mask].join('/') != first return if mask <= 24 return if mask > 31 return if network > 255 [network, mask] rescue ArgumentError # Not an integer end def delete_classless_delegations rnames = classless_delegation return unless rnames # Check if we have another NS for the same delegation return if domain.records.where(type: 'NS', name: name) .where.not(id: id).exists? # Delete all CNAMEs domain.records.where(name: rnames, type: 'CNAME', content: name).delete_all end def generate_classless_delegations rnames = classless_delegation return unless rnames # Make sure no record exists for a delegated domain if domain.records.where(name: rnames) .where.not(content: name).exists? errors.add(:name, 'Records already exist for the delegated octets!') return false end rnames.each { |rname| CNAME.find_or_create_by!( domain: domain, name: rname, content: name ) } end + + def self.to_fqdn(name, domain) + return name if name.end_with?(domain) + + "#{name}.#{domain}" + end end