mirror of
https://github.com/Sneed-Group/pypush-plus-plus
synced 2024-12-23 11:22:42 -06:00
312 lines
9.1 KiB
Python
312 lines
9.1 KiB
Python
from __future__ import annotations
|
|
|
|
import random
|
|
import socket
|
|
import threading
|
|
import time
|
|
from hashlib import sha1
|
|
|
|
import tlslite
|
|
|
|
import albert
|
|
import bags
|
|
|
|
#COURIER_HOST = "windows.courier.push.apple.com" # TODO: Get this from config
|
|
# Pick a random courier server from 01 to APNSCourierHostcount
|
|
COURIER_HOST = f"{random.randint(1, bags.apns_init_bag()['APNSCourierHostcount'])}-{bags.apns_init_bag()['APNSCourierHostname']}"
|
|
COURIER_PORT = 5223
|
|
ALPN = [b"apns-security-v2"]
|
|
|
|
|
|
# Connect to the courier server
|
|
def _connect(private_key: str, cert: str) -> tlslite.TLSConnection:
|
|
# Connect to the courier server
|
|
sock = socket.create_connection((COURIER_HOST, COURIER_PORT))
|
|
# Wrap the socket in TLS
|
|
sock = tlslite.TLSConnection(sock)
|
|
# Parse the certificate and private key
|
|
cert = tlslite.X509CertChain([tlslite.X509().parse(cert)])
|
|
private_key = tlslite.parsePEMKey(private_key, private=True)
|
|
# Handshake with the server
|
|
sock.handshakeClientCert(cert, private_key, alpn=ALPN)
|
|
|
|
return sock
|
|
|
|
|
|
class IncomingQueue:
|
|
def __init__(self):
|
|
self.queue = []
|
|
self.lock = threading.Lock()
|
|
|
|
def append(self, item):
|
|
with self.lock:
|
|
self.queue.append(item)
|
|
|
|
def pop(self, index):
|
|
with self.lock:
|
|
return self.queue.pop(index)
|
|
|
|
def __getitem__(self, index):
|
|
with self.lock:
|
|
return self.queue[index]
|
|
|
|
def __len__(self):
|
|
with self.lock:
|
|
return len(self.queue)
|
|
|
|
def find(self, finder):
|
|
with self.lock:
|
|
return next((i for i in self.queue if finder(i)), None)
|
|
|
|
def pop_find(self, finder):
|
|
with self.lock:
|
|
found = next((i for i in self.queue if finder(i)), None)
|
|
if found is not None:
|
|
# We have the lock, so we can safely remove it
|
|
self.queue.remove(found)
|
|
return found
|
|
|
|
def wait_pop_find(self, finder, delay=0.1):
|
|
found = None
|
|
while found is None:
|
|
found = self.pop_find(finder)
|
|
if found is None:
|
|
time.sleep(delay)
|
|
return found
|
|
|
|
|
|
class APNSConnection:
|
|
incoming_queue = IncomingQueue()
|
|
|
|
# Sink everything in the queue
|
|
def sink(self):
|
|
self.incoming_queue = IncomingQueue()
|
|
|
|
def _queue_filler(self):
|
|
while True and not self.sock.closed:
|
|
# print(self.sock.closed)
|
|
# print("QUEUE: Waiting for payload...")
|
|
# self.sock.read(1)
|
|
# print("QUEUE: Got payload?")
|
|
payload = _deserialize_payload(self.sock)
|
|
# print("QUEUE: Got payload?")
|
|
|
|
if payload is not None:
|
|
# print("QUEUE: Received payload: " + str(payload))
|
|
# print("QUEUE: Received payload type: " + hex(payload[0]))
|
|
self.incoming_queue.append(payload)
|
|
# print("QUEUE: Thread ended")
|
|
|
|
# def _pop_by_id(self, id: int) -> tuple[int, list[tuple[int, bytes]]] | None:
|
|
# def finder(item):
|
|
# return item[0] == id
|
|
# return self.incoming_queue.find(finder)
|
|
# # print("QUEUE: Looking for id " + str(id) + " in " + str(self.incoming_queue))
|
|
# #for i in range(len(self.incoming_queue)):
|
|
# # if self.incoming_queue[i][0] == id:
|
|
# # return self.incoming_queue.pop(i)
|
|
# #return None
|
|
|
|
# def wait_for_packet(self, id: int) -> tuple[int, list[tuple[int, bytes]]]:
|
|
# found = None
|
|
# while found is None:
|
|
# found = self._pop_by_id(id)
|
|
# if found is None:
|
|
# time.sleep(0.1)
|
|
# return found
|
|
|
|
# def find_packet(self, finder) ->
|
|
|
|
# def replace_packet(self, payload: tuple[int, list[tuple[int, bytes]]]):
|
|
# self.incoming_queue.append(payload)
|
|
|
|
def __init__(self, private_key=None, cert=None):
|
|
# Generate the private key and certificate if they're not provided
|
|
if private_key is None or cert is None:
|
|
self.private_key, self.cert = albert.generate_push_cert()
|
|
else:
|
|
self.private_key, self.cert = private_key, cert
|
|
|
|
self.sock = _connect(self.private_key, self.cert)
|
|
|
|
# Start the queue filler thread
|
|
self.queue_filler_thread = threading.Thread(
|
|
target=self._queue_filler, daemon=True
|
|
)
|
|
self.queue_filler_thread.start()
|
|
|
|
def connect(self, root: bool = True, token: bytes = None):
|
|
flags = 0b01000001
|
|
if root:
|
|
flags |= 0b0100
|
|
|
|
if token is None:
|
|
payload = _serialize_payload(
|
|
7, [(2, 0x01.to_bytes(1, "big")), (5, flags.to_bytes(4, "big"))]
|
|
)
|
|
else:
|
|
payload = _serialize_payload(
|
|
7,
|
|
[
|
|
(1, token),
|
|
(2, 0x01.to_bytes(1, "big")),
|
|
(5, flags.to_bytes(4, "big")),
|
|
],
|
|
)
|
|
|
|
self.sock.write(payload)
|
|
|
|
payload = self.incoming_queue.wait_pop_find(lambda i: i[0] == 8)
|
|
|
|
if (
|
|
payload == None
|
|
or payload[0] != 8
|
|
or _get_field(payload[1], 1) != 0x00.to_bytes(1, "big")
|
|
):
|
|
raise Exception("Failed to connect")
|
|
|
|
new_token = _get_field(payload[1], 3)
|
|
if new_token is not None:
|
|
self.token = new_token
|
|
elif token is not None:
|
|
self.token = token
|
|
else:
|
|
raise Exception("No token")
|
|
|
|
return self.token
|
|
|
|
def filter(self, topics: list[str]):
|
|
fields = [(1, self.token)]
|
|
|
|
for topic in topics:
|
|
fields.append((2, sha1(topic.encode()).digest()))
|
|
|
|
payload = _serialize_payload(9, fields)
|
|
|
|
self.sock.write(payload)
|
|
|
|
def send_message(self, topic: str, payload: str, id=None):
|
|
if id is None:
|
|
id = random.randbytes(4)
|
|
|
|
payload = _serialize_payload(
|
|
0x0A,
|
|
[
|
|
(4, id),
|
|
(1, sha1(topic.encode()).digest()),
|
|
(2, self.token),
|
|
(3, payload),
|
|
],
|
|
)
|
|
|
|
self.sock.write(payload)
|
|
|
|
# Wait for ACK
|
|
payload = self.incoming_queue.wait_pop_find(lambda i: i[0] == 0x0B)
|
|
|
|
if payload[1][0][1] != 0x00.to_bytes(1, "big"):
|
|
raise Exception("Failed to send message")
|
|
|
|
def set_state(self, state: int):
|
|
self.sock.write(
|
|
_serialize_payload(
|
|
0x14,
|
|
[(1, state.to_bytes(1, "big")), (2, 0x7FFFFFFF.to_bytes(4, "big"))],
|
|
)
|
|
)
|
|
|
|
def keep_alive(self):
|
|
self.sock.write(_serialize_payload(0x0C, []))
|
|
|
|
# def _send_ack(self, id: bytes):
|
|
# print(f"Sending ACK for message {id}")
|
|
# payload = _serialize_payload(0x0B, [(1, self.token), (4, id), (8, b"\x00")])
|
|
# self.sock.write(payload)
|
|
# #self.sock.write(_serialize_payload(0x0B, [(4, id)])
|
|
# #pass
|
|
|
|
# def recieve_message(self):
|
|
# payload = self.incoming_queue.wait_pop_find(lambda i: i[0] == 0x0A)
|
|
# # Send ACK
|
|
# self._send_ack(_get_field(payload[1], 4))
|
|
# return _get_field(payload[1], 3)
|
|
|
|
# TODO: Find a way to make this non-blocking
|
|
# def expect_message(self) -> tuple[int, list[tuple[int, bytes]]] | None:
|
|
# return _deserialize_payload(self.sock)
|
|
|
|
|
|
def _serialize_field(id: int, value: bytes) -> bytes:
|
|
return id.to_bytes(1, "big") + len(value).to_bytes(2, "big") + value
|
|
|
|
|
|
def _serialize_payload(id: int, fields: list[(int, bytes)]) -> bytes:
|
|
payload = b""
|
|
|
|
for fid, value in fields:
|
|
if fid is not None:
|
|
payload += _serialize_field(fid, value)
|
|
|
|
return id.to_bytes(1, "big") + len(payload).to_bytes(4, "big") + payload
|
|
|
|
|
|
def _deserialize_field(stream: bytes) -> tuple[int, bytes]:
|
|
id = int.from_bytes(stream[:1], "big")
|
|
length = int.from_bytes(stream[1:3], "big")
|
|
value = stream[3 : 3 + length]
|
|
return id, value
|
|
|
|
|
|
# Note: Takes a stream, not a buffer, as we do not know the length of the payload
|
|
# WILL BLOCK IF THE STREAM IS EMPTY
|
|
def _deserialize_payload(stream) -> tuple[int, list[tuple[int, bytes]]] | None:
|
|
id = int.from_bytes(stream.read(1), "big")
|
|
|
|
if id == 0x0:
|
|
return None
|
|
|
|
length = int.from_bytes(stream.read(4), "big")
|
|
|
|
buffer = stream.read(length)
|
|
|
|
fields = []
|
|
|
|
while len(buffer) > 0:
|
|
fid, value = _deserialize_field(buffer)
|
|
fields.append((fid, value))
|
|
buffer = buffer[3 + len(value) :]
|
|
|
|
return id, fields
|
|
|
|
|
|
def _deserialize_payload_from_buffer(
|
|
buffer: bytes,
|
|
) -> tuple[int, list[tuple[int, bytes]]] | None:
|
|
id = int.from_bytes(buffer[:1], "big")
|
|
|
|
if id == 0x0:
|
|
return None
|
|
|
|
length = int.from_bytes(buffer[1:5], "big")
|
|
|
|
buffer = buffer[5:]
|
|
|
|
if len(buffer) < length:
|
|
raise Exception("Buffer is too short")
|
|
|
|
fields = []
|
|
|
|
while len(buffer) > 0:
|
|
fid, value = _deserialize_field(buffer)
|
|
fields.append((fid, value))
|
|
buffer = buffer[3 + len(value) :]
|
|
|
|
return id, fields
|
|
|
|
|
|
# Returns the value of the first field with the given id
|
|
def _get_field(fields: list[tuple[int, bytes]], id: int) -> bytes:
|
|
for field_id, value in fields:
|
|
if field_id == id:
|
|
return value
|
|
return None
|