def get_reg(facilitator_addr, proxy_addr, proxy_transport_list):
"""
Get a client registration for proxy proxy_addr from the
facilitator at facilitator_addr using a one-time
socket. proxy_transport_list is a list containing the transport names that
the flashproxy supports.
Returns a dict with keys "client", "client-transport", "relay",
and "relay-transport" if successful, or a dict with the key "client"
mapped to the value "" if there are no registrations available for
proxy_addr. Raises an exception otherwise."""
f = fac_socket(facilitator_addr)
# Form a list (in transact() format) with the transports that we
# should send to the facilitator. Then pass that list to the
# transact() function.
# For example, PROXY-TRANSPORT=obfs2 PROXY-TRANSPORT=obfs3.
transports = [("PROXY-TRANSPORT", tp) for tp in proxy_transport_list]
try:
command, params = transact(f, "GET", ("FROM", format_addr(proxy_addr)),
*transports)
finally:
f.close()
response = {}
check_back_in = param_first("CHECK-BACK-IN", params)
if check_back_in is not None:
try:
float(check_back_in)
except ValueError:
raise ValueError(
"Facilitator returned non-numeric polling interval.")
response["check-back-in"] = check_back_in
if command == "NONE":
response["client"] = ""
return response
elif command == "OK":
client_spec = param_first("CLIENT", params)
client_transport = param_first("CLIENT-TRANSPORT", params)
relay_spec = param_first("RELAY", params)
relay_transport = param_first("RELAY-TRANSPORT", params)
if not client_spec:
raise ValueError("Facilitator did not return CLIENT")
if not client_transport:
raise ValueError("Facilitator did not return CLIENT-TRANSPORT")
if not relay_spec:
raise ValueError("Facilitator did not return RELAY")
if not relay_transport:
raise ValueError("Facilitator did not return RELAY-TRANSPORT")
# Check the syntax returned by the facilitator.
client = parse_addr_spec(client_spec)
relay = parse_addr_spec(relay_spec)
response["client"] = format_addr(client)
response["client-transport"] = client_transport
response["relay"] = format_addr(relay)
response["relay-transport"] = relay_transport
return response
else:
raise ValueError("Facilitator response was not \"OK\"")
def get_reg(facilitator_addr, proxy_addr, proxy_transport_list):
"""
Get a client registration for proxy proxy_addr from the
facilitator at facilitator_addr using a one-time
socket. proxy_transport_list is a list containing the transport names that
the flashproxy supports.
Returns a dict with keys "client", "client-transport", "relay",
and "relay-transport" if successful, or a dict with the key "client"
mapped to the value "" if there are no registrations available for
proxy_addr. Raises an exception otherwise."""
f = fac_socket(facilitator_addr)
# Form a list (in transact() format) with the transports that we
# should send to the facilitator. Then pass that list to the
# transact() function.
# For example, PROXY-TRANSPORT=obfs2 PROXY-TRANSPORT=obfs3.
transports = [("PROXY-TRANSPORT", tp) for tp in proxy_transport_list]
try:
command, params = transact(f, "GET", ("FROM", format_addr(proxy_addr)), *transports)
finally:
f.close()
response = {}
check_back_in = param_first("CHECK-BACK-IN", params)
if check_back_in is not None:
try:
float(check_back_in)
except ValueError:
raise ValueError("Facilitator returned non-numeric polling interval.")
response["check-back-in"] = check_back_in
if command == "NONE":
response["client"] = ""
return response
elif command == "OK":
client_spec = param_first("CLIENT", params)
client_transport = param_first("CLIENT-TRANSPORT", params)
relay_spec = param_first("RELAY", params)
relay_transport = param_first("RELAY-TRANSPORT", params)
if not client_spec:
raise ValueError("Facilitator did not return CLIENT")
if not client_transport:
raise ValueError("Facilitator did not return CLIENT-TRANSPORT")
if not relay_spec:
raise ValueError("Facilitator did not return RELAY")
if not relay_transport:
raise ValueError("Facilitator did not return RELAY-TRANSPORT")
# Check the syntax returned by the facilitator.
client = parse_addr_spec(client_spec)
relay = parse_addr_spec(relay_spec)
response["client"] = format_addr(client)
response["client-transport"] = client_transport
response["relay"] = format_addr(relay)
response["relay-transport"] = relay_transport
return response
else:
raise ValueError("Facilitator response was not \"OK\"")
def setUp(self):
self.relay_file = tempfile.NamedTemporaryFile()
self.relay_file.write("%s %s\n" % (RELAY_TP, format_addr(self.IPV4_RELAY_ADDR)))
self.relay_file.write("%s %s\n" % (RELAY_TP, format_addr(self.IPV6_RELAY_ADDR)))
self.relay_file.flush()
self.relay_file.seek(0)
fn = os.path.join(os.path.dirname(__file__), "./facilitator")
self.process = subprocess.Popen(["python", fn, "-d", "-p", str(FACILITATOR_PORT), "-r", self.relay_file.name, "-l", "/dev/null"])
time.sleep(0.1)
def test_fields(self):
"""Test that facilitator responses contain all the required fields."""
fac.put_reg(FACILITATOR_ADDR, self.IPV4_CLIENT_ADDR, CLIENT_TP)
reg = fac.get_reg(FACILITATOR_ADDR, self.IPV4_PROXY_ADDR, PROXY_TPS)
self.assertEqual(reg["client"], format_addr(self.IPV4_CLIENT_ADDR))
self.assertEqual(reg["client-transport"], CLIENT_TP)
self.assertEqual(reg["relay"], format_addr(self.IPV4_RELAY_ADDR))
self.assertEqual(reg["relay-transport"], RELAY_TP)
self.assertGreater(int(reg["check-back-in"]), 0)
def test_fields(self):
"""Test that facilitator responses contain all the required fields."""
fac.put_reg(FACILITATOR_ADDR, self.IPV4_CLIENT_ADDR, CLIENT_TP)
reg = fac.get_reg(FACILITATOR_ADDR, self.IPV4_PROXY_ADDR, PROXY_TPS)
self.assertEqual(reg["client"], format_addr(self.IPV4_CLIENT_ADDR))
self.assertEqual(reg["client-transport"], CLIENT_TP)
self.assertEqual(reg["relay"], format_addr(self.IPV4_RELAY_ADDR))
self.assertEqual(reg["relay-transport"], RELAY_TP)
self.assertGreater(int(reg["check-back-in"]), 0)
def setUp(self):
self.relay_file = tempfile.NamedTemporaryFile()
self.relay_file.write("%s %s\n" %
(RELAY_TP, format_addr(self.IPV4_RELAY_ADDR)))
self.relay_file.write("%s %s\n" %
(RELAY_TP, format_addr(self.IPV6_RELAY_ADDR)))
self.relay_file.flush()
self.relay_file.seek(0)
fn = os.path.join(os.path.dirname(__file__), "./facilitator")
self.process = subprocess.Popen([
"python", fn, "-d", "-p",
str(FACILITATOR_PORT), "-r", self.relay_file.name, "-l",
"/dev/null"
])
time.sleep(0.1)
def add_registration_args(parser):
add_module_opts(parser)
parser.add_argument("remote_addr",
metavar="ADDR:PORT",
help="external addr+port to register, default %s" %
format_addr(DEFAULT_REMOTE),
default="",
nargs="?",
type=lambda x: parse_addr_spec(x, *DEFAULT_REMOTE))
def put_reg(facilitator_addr, client_addr, transport):
"""Send a registration to the facilitator using a one-time socket. Returns
true iff the command was successful. transport is a transport string such as
"websocket" or "obfs3|websocket"."""
f = fac_socket(facilitator_addr)
params = [("CLIENT", format_addr(client_addr))]
params.append(("TRANSPORT", transport))
try:
command, params = transact(f, "PUT", *params)
finally:
f.close()
return command == "OK"
def put_reg(facilitator_addr, client_addr, transport):
"""Send a registration to the facilitator using a one-time socket. Returns
true iff the command was successful. transport is a transport string such as
"websocket" or "obfs3|websocket"."""
f = fac_socket(facilitator_addr)
params = [("CLIENT", format_addr(client_addr))]
params.append(("TRANSPORT", transport))
try:
command, params = transact(f, "PUT", *params)
finally:
f.close()
return command == "OK"
def test_none_port(self):
self.assertEqual(format_addr((None, 1234)), ":1234")
def test_af_v6_v6(self):
"""Test that IPv6 proxies can get IPv6 clients."""
fac.put_reg(FACILITATOR_ADDR, self.IPV4_CLIENT_ADDR, CLIENT_TP)
fac.put_reg(FACILITATOR_ADDR, self.IPV6_CLIENT_ADDR, CLIENT_TP)
reg = fac.get_reg(FACILITATOR_ADDR, self.IPV6_PROXY_ADDR, PROXY_TPS)
self.assertEqual(reg["client"], format_addr(self.IPV6_CLIENT_ADDR))
def test_empty_port(self):
self.assertEqual(format_addr(("", 1234)), ":1234")
def test_ipv6_port(self):
self.assertEqual(format_addr(("1:2::3:4", 1234)), "[1:2::3:4]:1234")
def test_name_none(self):
self.assertEqual(format_addr(("localhost", None)), "localhost")
def test_ipv6_none(self):
self.assertEqual(format_addr(("1:2::3:4", None)), "[1:2::3:4]")
def test_ipv4_none(self):
self.assertEqual(format_addr(("1.2.3.4", None)), "1.2.3.4")
def build_reg(addr, transport):
return urllib.urlencode((
("client", format_addr(addr)),
("client-transport", transport),
))
def add_registration_args(parser):
add_module_opts(parser)
parser.add_argument("remote_addr", metavar="ADDR:PORT",
help="external addr+port to register, default %s" %
format_addr(DEFAULT_REMOTE), default="", nargs="?",
type=lambda x: parse_addr_spec(x, *DEFAULT_REMOTE))
def test_ipv4_port(self):
self.assertEqual(format_addr(("1.2.3.4", 1234)), "1.2.3.4:1234")
def test_name_port(self):
self.assertEqual(format_addr(("localhost", 1234)), "localhost:1234")
def test_name_none(self):
self.assertEqual(format_addr(("localhost", None)), "localhost")
def test_none_port(self):
self.assertEqual(format_addr((None, 1234)), ":1234")
def test_empty_port(self):
self.assertEqual(format_addr(("", 1234)), ":1234")
def test_af_v6_v6(self):
"""Test that IPv6 proxies can get IPv6 clients."""
fac.put_reg(FACILITATOR_ADDR, self.IPV4_CLIENT_ADDR, CLIENT_TP)
fac.put_reg(FACILITATOR_ADDR, self.IPV6_CLIENT_ADDR, CLIENT_TP)
reg = fac.get_reg(FACILITATOR_ADDR, self.IPV6_PROXY_ADDR, PROXY_TPS)
self.assertEqual(reg["client"], format_addr(self.IPV6_CLIENT_ADDR))
def test_ipv4_port(self):
self.assertEqual(format_addr(("1.2.3.4", 1234)), "1.2.3.4:1234")
def build_reg(addr, transport):
return urllib.urlencode((
("client", format_addr(addr)),
("client-transport", transport),
))
def test_ipv6_port(self):
self.assertEqual(format_addr(("1:2::3:4", 1234)), "[1:2::3:4]:1234")
def test_ipv4_none(self):
self.assertEqual(format_addr(("1.2.3.4", None)), "1.2.3.4")
def test_name_port(self):
self.assertEqual(format_addr(("localhost", 1234)), "localhost:1234")
def test_ipv6_none(self):
self.assertEqual(format_addr(("1:2::3:4", None)), "[1:2::3:4]")
