def send_session_reply(self, station, session_info):
logger.debug("Sending session reply")
stream = StreamOut(self.settings)
stream.add(session_info)
data = stream.get()
rand_value = random.randint(0, 0xFFFFFFFF)
fragments = (len(data) - 1) // 800 + 1
for i in range(fragments):
stream = StreamOut(self.settings)
stream.u8(self.MESSAGE_SESSION_REPLY)
stream.pad(11)
stream.u32(rand_value)
stream.u16(self.session_reply_id)
stream.u8(i)
stream.u8(fragments)
body = data[i * 800 : (i + 1) * 800]
stream.u32(len(body))
stream.write(body)
message = PIAMessage()
message.protocol_id = self.get_protocol_type()
message.payload = stream.get()
self.transport.send(station, message)
self.session_reply_id += 1
def encode(self):
payload = self.encrypt(self.payload)
stream = StreamOut(self.settings)
stream.u32(0x32AB9864)
header_version = self.settings.get("pia.header_version")
crypto_enabled = self.settings.get("pia.crypto_enabled")
if header_version > 0:
stream.u8((crypto_enabled << 7) | header_version)
else:
stream.u8(crypto_enabled + 1)
stream.u8(self.connection_id)
stream.u16(self.sequence_id)
if header_version == 0:
stream.u16(self.session_timer)
stream.u16(self.rtt_timer)
if self.settings.get(
"pia.encryption_method") == EncryptionMethod.AES_GCM:
stream.u64(self.nonce)
stream.write(self.signature)
stream.write(payload)
stream.write(self.calc_signature(stream.get()))
return stream.get()