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 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)