def reset_all_zones(self):
"""
Reset all zones
"""
self._begin_op()
db_session = self.db_session
id_query = db_session.query(ZoneSM.id_, ZoneSM.name)
id_query = ZoneSM.query_is_not_disabled_deleted(id_query)
id_result = id_query.all()
for zone_id, zone_name in id_result:
try:
zone_sm = db_session.query(ZoneSM)\
.filter(ZoneSM.id_ == zone_id).one()
except NoResultFound:
raise ZoneNotFoundByZoneId(zone_id)
exec_zonesm(zone_sm, ZoneSMDoReset)
self._finish_op()
def refresh_sg(self, sg_name):
"""
Refresh all zones on an SG
"""
self._begin_op()
db_session = self.db_session
sg = self._find_sg_byname(sg_name)
id_query = db_session.query(ZoneSM.id_, ZoneSM.name)\
.filter(ZoneSM.sg_id == sg.id_)
id_query = ZoneSM.query_is_configured(id_query)
id_result = id_query.all()
for zone_id, zone_name in id_result:
try:
zone_sm = db_session.query(ZoneSM)\
.filter(ZoneSM.id_ == zone_id).one()
except NoResultFound:
raise ZoneNotFoundByZoneId(zone_id)
exec_zonesm(zone_sm, ZoneSMDoRefresh)
self._finish_op()
def _queue_auto_ptr_data(self, auto_ptr_data):
"""
Queue auto PTR data as incremental updates against respective reverse
zones.
"""
if not auto_ptr_data:
return
if not len(auto_ptr_data):
return
if not settings['auto_reverse']:
return
db_session = self.db_session
# Create new update_group
ug_dict = {}
auto_ptr_privilege_flag = False
for ptr_data in auto_ptr_data:
# Ignore addresses we don't have reverse zone for
query = db_session.query(ZoneSM)\
.join(ReverseNetwork)\
.filter(":address <<= reverse_networks.network")\
.params(address = ptr_data['address'])
query = ZoneSM.query_is_not_deleted(query)
query = ZoneSM.query_inc_updates(query)
query = query.order_by(ReverseNetwork.network.desc())\
.limit(1)
try:
zone_sm = query.one()
except NoResultFound:
continue
# Ignore invalid host names
if not is_inet_hostname(ptr_data['hostname'], absolute=True,
wildcard=False):
log_error("Hostname '%s' is not a valid hostname."
% ptr_data['hostname'])
continue
# Determine proposed update operation
update_op = RROP_PTR_UPDATE_FORCE if ptr_data['force_reverse'] \
else RROP_PTR_UPDATE
# Execute privilege checks ahead of time to save unnecessary churn
# Better than needlessly going through whole rigamorole of
# incremental update processing later on for no effect
#1 See if old PTR exists to retrieve any RR reference
# Both following also used lower down when generating RR_PTR
label = label_from_address(ptr_data['address'])
rr_ref = find_reference(db_session, ptr_data['reference'],
raise_exc=False)
# query for old record - this generates one select
# Optimization - if check has previously suceeded, don't check
# again as this is all checked further in
if not auto_ptr_privilege_flag:
qlabel= label[:label.rfind(zone_sm.name)-1]
query = db_session.query(ResourceRecord)\
.filter(ResourceRecord.label == qlabel)\
.filter(ResourceRecord.zi_id == zone_sm.zi_candidate_id)\
.filter(ResourceRecord.disable == False)\
.filter(ResourceRecord.type_ == RRTYPE_PTR)
old_rrs = query.all()
old_rr = old_rrs[0] if len(old_rrs) else None
# Check that we can proceed, only if check has not succeded yet
if not check_auto_ptr_privilege(rr_ref, self.sectag, zone_sm,
old_rr):
if old_rr:
log_debug("Zone '%s' - can't replace '%s' PTR"
" as neither"
" sectags '%s' vs '%s'"
" references '%s' vs '%s'/'%s' (old PTR/rev zone)"
"match ,"
" or values not given."
% (zone_sm.name, old_rr.label,
self.sectag.sectag, settings['admin_sectag'],
rr_ref, old_rr.reference, zone_sm.reference))
else:
log_debug("Zone '%s' - can't add '%s' PTR as neither"
" sectags '%s' vs '%s'"
" references '%s' vs '%s' (rev zone) match,"
" or values not given."
% (zone_sm.name, qlabel,
self.sectag.sectag, settings['admin_sectag'],
rr_ref, zone_sm.reference))
continue
auto_ptr_privilege_flag = True
# Create a new update group if zone has not been seen before.
try:
update_group, zone_ttl = ug_dict.get(zone_sm)
except (ValueError, TypeError):
# Obtain reverse zone_ttl so PTR rrs can be created
# Use candidate ZI as it always is available.
# zi is published zi
zi = self._get_zi(zone_sm.zi_candidate_id)
if not zi:
log_error("Zone '%s': does not have candidate zi."
% zone_sm.name)
continue
zone_ttl = zi.zone_ttl
update_group = new_update_group(db_session, None,
zone_sm, None, ptr_only=True,
sectag=self.sectag.sectag)
ug_dict[zone_sm] = (update_group, zone_ttl)
# Allocate RR_PTR update record
rr = RR_PTR(label=label, zone_ttl=zone_ttl,
rdata=ptr_data['hostname'], disable=ptr_data['disable'],
domain=zone_sm.name, update_op=update_op)
rr.ref_id = rr_ref.id_ if rr_ref else None
rr.reference = rr_ref
# Chain on RR_PTR update record
update_group.update_ops.append(rr)
# Flush everything to disk
db_session.flush()
# Issue zone refreshes to implement PTR changes
for zone_sm in ug_dict:
if zone_sm.is_disabled():
continue
exec_zonesm(zone_sm, ZoneSMDoRefresh)
# Make sure everything is committed
db_session.commit()
def restore_named_db(self):
"""
Dump dms DB to Named zone files and include file
For quick DR secnario
"""
self._begin_op()
# Exception processing make the both of the following a bit of a
# rats nest
# Check that named is not running
cmdline = [settings['rndc_path'], 'status']
try:
check_output(cmdline, stderr=STDOUT)
except CalledProcessError as exc:
if exc.returncode != 1:
raise exc
pass
else:
raise NamedStillRunning(0)
# Check that dmsdmd is not running
try:
pid_file = open(settings['pid_file'],'r')
dmsdmd_pid = int(pid_file.readline().strip())
pid_file.close()
# The following throws exceptions if process does not exist etc!
# Sending signal 0 does not touch process, but call succeeds
# if it exists
os.kill(dmsdmd_pid, 0)
except ValueError as exc:
# Error from int() type conversion above
raise PidFileValueError(pid_file, exc)
except (IOError,OSError) as exc:
if (exc.errno in (errno.ESRCH,)):
# This is from kill()
raise DmsdmdStillRunning(dmsdmd_pid)
# File IO causes this
elif (exc.errno in (errno.ENOENT,)):
# This file may be removed by dameon nicely shutting down.
pass
else:
# No exceptions, dmsdmd is running!!!
raise DmsdmdStillRunning(dmsdmd_pid)
# Dump out each zone file
db_session = self.db_session
id_query = db_session.query(ZoneSM.id_, ZoneSM.name)
id_query = ZoneSM.query_is_not_disabled_deleted(id_query)
id_result = id_query.all()
for zone_id, zone_name in id_result:
try:
zone_sm = db_session.query(ZoneSM)\
.filter(ZoneSM.id_ == zone_id).one()
except NoResultFound:
raise ZoneNotFoundByZoneId(zone_id)
try:
zone_sm.write_zone_file(db_session, ZoneFileWriteInternalError)
zone_sm.state = ZSTATE_PUBLISHED
db_session.commit()
except ZoneFileWriteInternalError as exc:
db_session.rollback()
raise ZoneFileWriteError(str(exc))
# Write out config file include
master_sm = get_master_sm(db_session)
try:
master_sm.write_named_conf_includes(db_session,
NamedConfWriteInternalError)
except NamedConfWriteInternalError as exc:
raise NamedConfWriteError(str(exc))
self._finish_op()
def _queue_auto_ptr_data(self, auto_ptr_data):
"""
Queue auto PTR data as incremental updates against respective reverse
zones.
"""
if not auto_ptr_data:
return
if not len(auto_ptr_data):
return
if not settings['auto_reverse']:
return
db_session = self.db_session
# Create new update_group
ug_dict = {}
auto_ptr_privilege_flag = False
for ptr_data in auto_ptr_data:
# Ignore addresses we don't have reverse zone for
query = db_session.query(ZoneSM)\
.join(ReverseNetwork)\
.filter(text(":address <<= reverse_networks.network"))\
.params(address = ptr_data['address'])
query = ZoneSM.query_is_not_deleted(query)
query = ZoneSM.query_inc_updates(query)
query = query.order_by(ReverseNetwork.network.desc())\
.limit(1)
try:
zone_sm = query.one()
except NoResultFound:
continue
# Ignore invalid host names
if not is_inet_hostname(
ptr_data['hostname'], absolute=True, wildcard=False):
log_error("Hostname '%s' is not a valid hostname." %
ptr_data['hostname'])
continue
# Determine proposed update operation
update_op = RROP_PTR_UPDATE_FORCE if ptr_data['force_reverse'] \
else RROP_PTR_UPDATE
# Execute privilege checks ahead of time to save unnecessary churn
# Better than needlessly going through whole rigamorole of
# incremental update processing later on for no effect
#1 See if old PTR exists to retrieve any RR reference
# Both following also used lower down when generating RR_PTR
label = label_from_address(ptr_data['address'])
rr_ref = find_reference(db_session,
ptr_data['reference'],
raise_exc=False)
# query for old record - this generates one select
# Optimization - if check has previously suceeded, don't check
# again as this is all checked further in
if not auto_ptr_privilege_flag:
qlabel = label[:label.rfind(zone_sm.name) - 1]
query = db_session.query(ResourceRecord)\
.filter(ResourceRecord.label == qlabel)\
.filter(ResourceRecord.zi_id == zone_sm.zi_candidate_id)\
.filter(ResourceRecord.disable == False)\
.filter(ResourceRecord.type_ == RRTYPE_PTR)
old_rrs = query.all()
old_rr = old_rrs[0] if len(old_rrs) else None
# Check that we can proceed, only if check has not succeded yet
if not check_auto_ptr_privilege(rr_ref, self.sectag, zone_sm,
old_rr):
if old_rr:
log_debug(
"Zone '%s' - can't replace '%s' PTR"
" as neither"
" sectags '%s' vs '%s'"
" references '%s' vs '%s'/'%s' (old PTR/rev zone)"
"match ,"
" or values not given." %
(zone_sm.name, old_rr.label, self.sectag.sectag,
settings['admin_sectag'], rr_ref,
old_rr.reference, zone_sm.reference))
else:
log_debug("Zone '%s' - can't add '%s' PTR as neither"
" sectags '%s' vs '%s'"
" references '%s' vs '%s' (rev zone) match,"
" or values not given." %
(zone_sm.name, qlabel, self.sectag.sectag,
settings['admin_sectag'], rr_ref,
zone_sm.reference))
continue
auto_ptr_privilege_flag = True
# Create a new update group if zone has not been seen before.
try:
update_group, zone_ttl = ug_dict.get(zone_sm)
except (ValueError, TypeError):
# Obtain reverse zone_ttl so PTR rrs can be created
# Use candidate ZI as it always is available.
# zi is published zi
zi = self._get_zi(zone_sm.zi_candidate_id)
if not zi:
log_error("Zone '%s': does not have candidate zi." %
zone_sm.name)
continue
zone_ttl = zi.zone_ttl
update_group = new_update_group(db_session,
None,
zone_sm,
None,
ptr_only=True,
sectag=self.sectag.sectag)
ug_dict[zone_sm] = (update_group, zone_ttl)
# Allocate RR_PTR update record
rr = RR_PTR(label=label,
zone_ttl=zone_ttl,
rdata=ptr_data['hostname'],
disable=ptr_data['disable'],
domain=zone_sm.name,
update_op=update_op)
rr.ref_id = rr_ref.id_ if rr_ref else None
rr.reference = rr_ref
# Chain on RR_PTR update record
update_group.update_ops.append(rr)
# Flush everything to disk
db_session.flush()
# Issue zone refreshes to implement PTR changes
for zone_sm in ug_dict:
if zone_sm.is_disabled():
continue
exec_zonesm(zone_sm, ZoneSMDoRefresh)
# Make sure everything is committed
db_session.commit()