def from_payload(cls, data, src, dst, timestamp):
if len(data) < 16:
raise BadPacket("Too small")
proto, offset = read_long(data, 0)
if proto == cls.PROTO_VER:
server_id, offset = read_long(data, offset)
election_addr, _ = read_string(data, offset)
return Initial(timestamp, src, dst, server_id, election_addr)
if len(data) >= cls.OLD_LEN:
state, offset = read_number(data, 0)
if PeerState.invalid(state):
raise BadPacket("Invalid state: %d" % state)
leader, offset = read_long(data, offset)
zxid, offset = read_long(data, offset)
election_epoch, offset = read_long(data, offset)
peer_epoch, offset = read_long(data, offset) if len(data) > cls.OLD_LEN else (-1, offset)
config = data[cls.WITH_CONFIG_LEN:] if len(data) > cls.WITH_CONFIG_LEN else ""
return Notification(
timestamp,
src,
dst,
state,
leader,
zxid,
election_epoch,
peer_epoch,
config
)
raise BadPacket("Unknown unknown")
def from_payload(cls, data, src, dst, timestamp):
if len(data) < 16:
raise BadPacket("Too small")
proto, offset = read_long(data, 0)
if proto == cls.PROTO_VER:
server_id, offset = read_long(data, offset)
election_addr, _ = read_string(data, offset)
return Initial(timestamp, src, dst, server_id, election_addr)
if len(data) >= cls.OLD_LEN:
state, offset = read_number(data, 0)
if PeerState.invalid(state):
raise BadPacket("Invalid state: %d" % state)
leader, offset = read_long(data, offset)
zxid, offset = read_long(data, offset)
election_epoch, offset = read_long(data, offset)
peer_epoch, offset = read_long(data, offset) if len(data) > cls.OLD_LEN else (-1, offset)
version = 0
config = ""
if len(data) > cls.WITH_VERSION_LEN:
version, offset = read_number(data, offset)
if version == 2:
config, _ = read_string(data, offset)
return Notification(
timestamp,
src,
dst,
state,
leader,
zxid,
election_epoch,
peer_epoch,
version,
config
)
raise BadPacket("Unknown unknown")
def _is_packet_fle_initial(self, packet):
data = get_ip_packet(packet.load).data.data
proto, offset = read_long(data, 0)
if proto != FLE.Initial.PROTO_VER: return False
server_id, offset = read_long(data, offset)
if server_id < 0: return False
election_addr, offset = read_string(data, offset)
if election_addr.count(":") != 1: return False
expected_len = 8 + 8 + 4 + len(election_addr)
if len(data) != expected_len: return False
return True
def _is_packet_fle_initial(self, packet):
data = get_ip_packet(packet.load).data.data
proto, offset = read_long(data, 0)
if proto != FLE.Initial.PROTO_VER: return False
server_id, offset = read_long(data, offset)
if server_id < 0: return False
election_addr, offset = read_string(data, offset)
if election_addr.count(":") != 1: return False
expected_len = 8 + 8 + 4 + len(election_addr)
if len(data) != expected_len: return False
return True
def test_bad_unicode():
bad = b'0\xf5'
data = struct.Struct('!i').pack(len(bad)) + bad
assert read_string(data, 0)[0] == "unreadable"
def test_bad_unicode():
bad = u'0\xf5'.encode('utf-8')
data = struct.Struct('!i').pack(len(bad)) + bad
assert read_string(data, 0)[0] == "unreadable"