def test_dns_text_repr(self):
# There was an issue on Python 3 that prevented DNSText's repr
# from working when the text was longer than 10 bytes
text = DNSText("irrelevant", None, 0, 0, b"12345678901")
repr(text)
text = DNSText("irrelevant", None, 0, 0, b"123")
repr(text)
def test_tc_bit_not_set_in_answer_packet():
"""Verify the TC bit is not set when there are no questions and answers exceed the packet size."""
out = r.DNSOutgoing(const._FLAGS_QR_RESPONSE | const._FLAGS_AA)
for i in range(30):
out.add_answer_at_time(
DNSText(
("HASS Bridge W9DN %s._hap._tcp.local." % i),
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
b'\x13md=HASS Bridge W9DN\x06pv=1.0\x14id=11:8E:DB:5B:5C:C5\x05c#=12\x04s#=1'
b'\x04ff=0\x04ci=2\x04sf=0\x0bsh=6fLM5A==',
),
0,
)
packets = out.packets()
assert len(packets) == 3
first_packet = r.DNSIncoming(packets[0])
assert first_packet.flags & const._FLAGS_TC == 0
assert first_packet.valid is True
second_packet = r.DNSIncoming(packets[1])
assert second_packet.flags & const._FLAGS_TC == 0
assert second_packet.valid is True
third_packet = r.DNSIncoming(packets[2])
assert third_packet.flags & const._FLAGS_TC == 0
assert third_packet.valid is True
def register_service(zc, info, ttl=60, send_num=3):
"""
like zeroconf.Zeroconf.register_service() but
just broadcasts send_num packets and then returns
"""
logger.info("Registering service: {s}".format(s=info))
now = current_time_millis()
next_time = now
i = 0
while i < 3:
if now < next_time:
sleep_time = next_time - now
logger.debug("sleeping {s}".format(s=sleep_time))
zc.wait(sleep_time)
now = current_time_millis()
continue
out = DNSOutgoing(_FLAGS_QR_RESPONSE | _FLAGS_AA)
out.add_answer_at_time(
DNSPointer(info.type, _TYPE_PTR, _CLASS_IN, ttl, info.name), 0)
out.add_answer_at_time(
DNSService(info.name, _TYPE_SRV, _CLASS_IN, ttl, info.priority,
info.weight, info.port, info.server), 0)
out.add_answer_at_time(
DNSText(info.name, _TYPE_TXT, _CLASS_IN, ttl, info.text), 0)
if info.address:
out.add_answer_at_time(
DNSAddress(info.server, _TYPE_A, _CLASS_IN, ttl, info.address),
0)
zc.send(out)
i += 1
next_time += _REGISTER_TIME
logger.debug("done registering service")
def test_tc_bit_in_query_packet():
"""Verify the TC bit is set when known answers exceed the packet size."""
out = r.DNSOutgoing(const._FLAGS_QR_QUERY | const._FLAGS_AA)
type_ = "_hap._tcp.local."
out.add_question(r.DNSQuestion(type_, const._TYPE_PTR, const._CLASS_IN))
for i in range(30):
out.add_answer_at_time(
DNSText(
("HASS Bridge W9DN %s._hap._tcp.local." % i),
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
b'\x13md=HASS Bridge W9DN\x06pv=1.0\x14id=11:8E:DB:5B:5C:C5\x05c#=12\x04s#=1'
b'\x04ff=0\x04ci=2\x04sf=0\x0bsh=6fLM5A==',
),
0,
)
packets = out.packets()
assert len(packets) == 3
first_packet = r.DNSIncoming(packets[0])
assert first_packet.truncated
assert first_packet.valid is True
second_packet = r.DNSIncoming(packets[1])
assert second_packet.truncated
assert second_packet.valid is True
third_packet = r.DNSIncoming(packets[2])
assert not third_packet.truncated
assert third_packet.valid is True
def test_records_same_packet_share_fate():
"""Test records in the same packet all have the same created time."""
out = r.DNSOutgoing(const._FLAGS_QR_QUERY | const._FLAGS_AA)
type_ = "_hap._tcp.local."
out.add_question(r.DNSQuestion(type_, const._TYPE_PTR, const._CLASS_IN))
for i in range(30):
out.add_answer_at_time(
DNSText(
("HASS Bridge W9DN %s._hap._tcp.local." % i),
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
b'\x13md=HASS Bridge W9DN\x06pv=1.0\x14id=11:8E:DB:5B:5C:C5\x05c#=12\x04s#=1'
b'\x04ff=0\x04ci=2\x04sf=0\x0bsh=6fLM5A==',
),
0,
)
for packet in out.packets():
dnsin = DNSIncoming(packet)
first_time = dnsin.answers[0].created
for answer in dnsin.answers:
assert answer.created == first_time
def test_dnstext_repr_works():
# There was an issue on Python 3 that prevented DNSText's repr
# from working when the text was longer than 10 bytes
text = DNSText('irrelevant', None, 0, 0, b'12345678901')
repr(text)
"70-35-60-63.1 Ohana._sleep-proxy._udp.local.",
)
SLEEP_PROXY_SRV_RECORD = DNSService(
"70-35-60-63.1 Ohana._sleep-proxy._udp.local.",
const._TYPE_SRV,
const._CLASS_IN,
const._DNS_HOST_TTL,
0,
0,
54942,
"Ohana.local.",
)
SLEEP_PROXY_TXT_RECORD = DNSText(
"70-35-60-63.1 Ohana._sleep-proxy._udp.local.",
const._TYPE_TXT,
const._CLASS_IN,
const._DNS_OTHER_TTL,
b"",
)
AIRPLAY_PTR_RECORD = DNSPointer(
"_airplay._tcp.local.",
const._TYPE_PTR,
const._CLASS_IN,
const._DNS_OTHER_TTL,
"Ohana._airplay._tcp.local.",
)
AIRPLAY_SRV_RECORD = DNSService(
"Ohana._airplay._tcp.local.",
const._TYPE_SRV,
const._CLASS_IN,
const._DNS_HOST_TTL,
def test_dns_compression_rollback_for_corruption():
"""Verify rolling back does not lead to dns compression corruption."""
out = r.DNSOutgoing(const._FLAGS_QR_RESPONSE | const._FLAGS_AA)
address = socket.inet_pton(socket.AF_INET, "192.168.208.5")
additionals = [
{
"name":
"HASS Bridge ZJWH FF5137._hap._tcp.local.",
"address":
address,
"port":
51832,
"text":
b"\x13md=HASS Bridge"
b" ZJWH\x06pv=1.0\x14id=01:6B:30:FF:51:37\x05c#=12\x04s#=1\x04ff=0\x04"
b"ci=2\x04sf=0\x0bsh=L0m/aQ==",
},
{
"name":
"HASS Bridge 3K9A C2582A._hap._tcp.local.",
"address":
address,
"port":
51834,
"text":
b"\x13md=HASS Bridge"
b" 3K9A\x06pv=1.0\x14id=E2:AA:5B:C2:58:2A\x05c#=12\x04s#=1\x04ff=0\x04"
b"ci=2\x04sf=0\x0bsh=b2CnzQ==",
},
{
"name":
"Master Bed TV CEDB27._hap._tcp.local.",
"address":
address,
"port":
51830,
"text":
b"\x10md=Master Bed"
b" TV\x06pv=1.0\x14id=9E:B7:44:CE:DB:27\x05c#=18\x04s#=1\x04ff=0\x05"
b"ci=31\x04sf=0\x0bsh=CVj1kw==",
},
{
"name":
"Living Room TV 921B77._hap._tcp.local.",
"address":
address,
"port":
51833,
"text":
b"\x11md=Living Room"
b" TV\x06pv=1.0\x14id=11:61:E7:92:1B:77\x05c#=17\x04s#=1\x04ff=0\x05"
b"ci=31\x04sf=0\x0bsh=qU77SQ==",
},
{
"name":
"HASS Bridge ZC8X FF413D._hap._tcp.local.",
"address":
address,
"port":
51829,
"text":
b"\x13md=HASS Bridge"
b" ZC8X\x06pv=1.0\x14id=96:14:45:FF:41:3D\x05c#=12\x04s#=1\x04ff=0\x04"
b"ci=2\x04sf=0\x0bsh=b0QZlg==",
},
{
"name":
"HASS Bridge WLTF 4BE61F._hap._tcp.local.",
"address":
address,
"port":
51837,
"text":
b"\x13md=HASS Bridge"
b" WLTF\x06pv=1.0\x14id=E0:E7:98:4B:E6:1F\x04c#=2\x04s#=1\x04ff=0\x04"
b"ci=2\x04sf=0\x0bsh=ahAISA==",
},
{
"name":
"FrontdoorCamera 8941D1._hap._tcp.local.",
"address":
address,
"port":
54898,
"text":
b"\x12md=FrontdoorCamera\x06pv=1.0\x14id=9F:B7:DC:89:41:D1\x04c#=2\x04"
b"s#=1\x04ff=0\x04ci=2\x04sf=0\x0bsh=0+MXmA==",
},
{
"name":
"HASS Bridge W9DN 5B5CC5._hap._tcp.local.",
"address":
address,
"port":
51836,
"text":
b"\x13md=HASS Bridge"
b" W9DN\x06pv=1.0\x14id=11:8E:DB:5B:5C:C5\x05c#=12\x04s#=1\x04ff=0\x04"
b"ci=2\x04sf=0\x0bsh=6fLM5A==",
},
{
"name":
"HASS Bridge Y9OO EFF0A7._hap._tcp.local.",
"address":
address,
"port":
51838,
"text":
b"\x13md=HASS Bridge"
b" Y9OO\x06pv=1.0\x14id=D3:FE:98:EF:F0:A7\x04c#=2\x04s#=1\x04ff=0\x04"
b"ci=2\x04sf=0\x0bsh=u3bdfw==",
},
{
"name":
"Snooze Room TV 6B89B0._hap._tcp.local.",
"address":
address,
"port":
51835,
"text":
b"\x11md=Snooze Room"
b" TV\x06pv=1.0\x14id=5F:D5:70:6B:89:B0\x05c#=17\x04s#=1\x04ff=0\x05"
b"ci=31\x04sf=0\x0bsh=xNTqsg==",
},
{
"name":
"AlexanderHomeAssistant 74651D._hap._tcp.local.",
"address":
address,
"port":
54811,
"text":
b"\x19md=AlexanderHomeAssistant\x06pv=1.0\x14id=59:8A:0B:74:65:1D\x05"
b"c#=14\x04s#=1\x04ff=0\x04ci=2\x04sf=0\x0bsh=ccZLPA==",
},
{
"name":
"HASS Bridge OS95 39C053._hap._tcp.local.",
"address":
address,
"port":
51831,
"text":
b"\x13md=HASS Bridge"
b" OS95\x06pv=1.0\x14id=7E:8C:E6:39:C0:53\x05c#=12\x04s#=1\x04ff=0\x04ci=2"
b"\x04sf=0\x0bsh=Xfe5LQ==",
},
]
out.add_answer_at_time(
DNSText(
"HASS Bridge W9DN 5B5CC5._hap._tcp.local.",
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
b'\x13md=HASS Bridge W9DN\x06pv=1.0\x14id=11:8E:DB:5B:5C:C5\x05c#=12\x04s#=1'
b'\x04ff=0\x04ci=2\x04sf=0\x0bsh=6fLM5A==',
),
0,
)
for record in additionals:
out.add_additional_answer(
r.DNSService(
record["name"], # type: ignore
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_HOST_TTL,
0,
0,
record["port"], # type: ignore
record["name"], # type: ignore
))
out.add_additional_answer(
r.DNSText(
record["name"], # type: ignore
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
record["text"], # type: ignore
))
out.add_additional_answer(
r.DNSAddress(
record["name"], # type: ignore
const._TYPE_A,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_HOST_TTL,
record["address"], # type: ignore
))
for packet in out.packets():
# Verify we can process the packets we created to
# ensure there is no corruption with the dns compression
incoming = r.DNSIncoming(packet)
assert incoming.valid is True
