def _rev_entries_handler(self, raw_entries):
for raw in raw_entries:
srev_info = SignedRevInfo.from_raw(raw)
rev_info = srev_info.rev_info()
self.check_revocation(
srev_info, lambda x: self._remove_revoked_segments(rev_info)
if not x else False)
def test_revoked(self):
pcb = self._mk_pcb()
inst = Mock()
rev_info = RevocationInfo.from_values(ISD_AS("1-ff00:0:300"), 1, LinkType.PARENT, 1)
srev_info = SignedRevInfo.from_values(rev_info.copy().pack(),
ProtoSignType.ED25519, "src".encode())
rev_cache = Mock()
rev_cache.get.return_value = srev_info
inst.check_revoked_interface = SCIONElement.check_revoked_interface
ntools.eq_(inst.check_revoked_interface(inst, pcb, rev_cache), False)
def _issue_revocations(self, revoked_ifs):
"""
Store a RevocationInfo in ZK and send a revocation to all BRs.
:param list revoked_ifs: A list of interfaces that needs to be revoked.
"""
# Only the master BS issues revocations.
if not self.zk.have_lock():
return
# Process revoked interfaces.
infos = []
for if_id in revoked_ifs:
br = self.ifid2br[if_id]
rev_info = RevocationInfo.from_values(
self.addr.isd_as, if_id, br.interfaces[if_id].link_type,
int(time.time()), self.REVOCATION_TTL)
logging.info("Issuing revocation: %s", rev_info.short_desc())
if self._labels:
REVOCATIONS_ISSUED.labels(**self._labels).inc()
chain = self._get_my_cert()
_, cert_ver = chain.get_leaf_isd_as_ver()
src = DefaultSignSrc.from_values(
rev_info.isd_as(), cert_ver,
self._get_my_trc().version).pack()
srev_info = SignedRevInfo.from_values(rev_info.copy().pack(),
ProtoSignType.ED25519, src)
srev_info.sign(self.signing_key)
# Add to revocation cache
self.if_revocations[if_id] = srev_info
self._process_revocation(srev_info)
infos.append(IFStateInfo.from_values(if_id, False, srev_info))
border_metas = []
# Add all BRs.
for br in self.topology.border_routers:
br_addr, br_port = br.int_addrs.public[0]
border_metas.append(
UDPMetadata.from_values(host=br_addr, port=br_port))
# Add local path server.
ps_meta = []
if self.topology.path_servers:
try:
addr, port = self.dns_query_topo(ServiceType.PS)[0]
except SCIONServiceLookupError:
addr, port = None, None
# Create a meta if there is a local path service
if addr:
ps_meta.append(UDPMetadata.from_values(host=addr, port=port))
self._send_ifstate_update(infos, border_metas, ps_meta)
def process_rev_objects(self, rev_infos):
"""
Processes revocation infos stored in Zookeeper.
"""
with self._rev_seg_lock:
for raw in rev_infos:
try:
srev_info = SignedRevInfo.from_raw(raw)
except SCIONParseError as e:
logging.error("Error parsing revocation info from ZK: %s",
e)
continue
self.check_revocation(
srev_info,
lambda x: lambda: self.local_rev_cache.add(srev_info)
if not x else False)
def _handle_scmp(self, spkt):
scmp_hdr = spkt.l4_hdr
spkt.parse_payload()
if (scmp_hdr.class_ == SCMPClass.PATH
and scmp_hdr.type == SCMPPathClass.REVOKED_IF):
scmp_pld = spkt.get_payload()
srev_info = SignedRevInfo.from_raw(scmp_pld.info.srev_info)
rev_info = srev_info.rev_info()
logging.info("Received revocation: %s (from %s)",
rev_info.short_desc(), spkt.addrs.src)
lib_sciond.send_rev_notification(srev_info,
connector=self._connector)
return ResponseRV.RETRY
else:
logging.error("Received SCMP error:\n%s", spkt)
return ResponseRV.FAILURE
def handle_scmp_revocation(self, pld, meta):
srev_info = SignedRevInfo.from_raw(pld.info.srev_info)
self.handle_revocation(CtrlPayload(PathMgmt(srev_info)), meta)
def srev_info(self, idx):
return SignedRevInfo(self.p.sRevInfos[idx])
def srev_info(self):
if not self._rev_info:
self._rev_info = SignedRevInfo(self.p.sRevInfo)
return self._rev_info
def srev_info(self):
if self.p.sRevInfo:
return SignedRevInfo(self.p.sRevInfo)
return None
