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"""Test a Peer object."""
import asyncio
from datetime import UTC, datetime, timedelta
import hashlib
import os
import pytest
import snitun
from snitun.exceptions import SniTunChallengeError
from snitun.multiplexer.crypto import CryptoTransport
from snitun.multiplexer.message import CHANNEL_FLOW_PING
from snitun.server.peer import Peer
from ..conftest import Client
def test_init_peer() -> None:
"""Test simple init of peer."""
valid = datetime.now(tz=UTC) + timedelta(days=1)
peer = Peer(
"localhost",
valid,
os.urandom(32),
os.urandom(16),
snitun.PROTOCOL_VERSION,
alias="localhost.custom",
)
assert peer.is_valid
assert peer.hostname == "localhost"
assert peer.multiplexer is None
assert peer.alias == "localhost.custom"
async def test_init_peer_multiplexer(
test_client: Client,
test_server: list[Client],
) -> None:
"""Test setup multiplexer."""
loop = asyncio.get_running_loop()
client = test_server[0]
aes_key = os.urandom(32)
aes_iv = os.urandom(16)
valid = datetime.now(tz=UTC) + timedelta(days=1)
peer = Peer("localhost", valid, aes_key, aes_iv, snitun.PROTOCOL_VERSION)
crypto = CryptoTransport(aes_key, aes_iv)
with pytest.raises(RuntimeError):
await peer.wait_disconnect()
init_task = loop.create_task(
peer.init_multiplexer_challenge(test_client.reader, test_client.writer),
)
await asyncio.sleep(0.1)
assert not init_task.done()
assert not peer.is_ready
assert not peer.is_connected
token = await client.reader.readexactly(32)
token = hashlib.sha256(crypto.decrypt(token)).digest()
client.writer.write(crypto.encrypt(token))
await client.writer.drain()
await asyncio.sleep(0.1)
assert init_task.exception() is None
assert init_task.done()
assert peer.is_ready
assert peer.is_connected
assert peer.multiplexer._throttling is None
client.writer.close()
client.close.set()
await asyncio.sleep(0.1)
assert not peer.multiplexer.is_connected
async def test_init_peer_multiplexer_crypto(
test_client: Client,
test_server: list[Client],
) -> None:
"""Test setup multiplexer with crypto."""
loop = asyncio.get_running_loop()
client = test_server[0]
aes_key = os.urandom(32)
aes_iv = os.urandom(16)
valid = datetime.now(tz=UTC) + timedelta(days=1)
peer = Peer("localhost", valid, aes_key, aes_iv, snitun.PROTOCOL_VERSION)
crypto = CryptoTransport(aes_key, aes_iv)
with pytest.raises(RuntimeError):
await peer.wait_disconnect()
init_task = loop.create_task(
peer.init_multiplexer_challenge(test_client.reader, test_client.writer),
)
await asyncio.sleep(0.1)
assert not init_task.done()
assert not peer.is_ready
assert not peer.is_connected
token = await client.reader.readexactly(32)
token = hashlib.sha256(crypto.decrypt(token)).digest()
client.writer.write(crypto.encrypt(token))
await client.writer.drain()
await asyncio.sleep(0.1)
assert init_task.exception() is None
assert init_task.done()
assert peer.is_ready
assert peer.is_connected
ping_task = loop.create_task(peer.multiplexer.ping())
await asyncio.sleep(0.1)
ping_data = await client.reader.read(1024)
ping = crypto.decrypt(ping_data)
assert ping[16] == CHANNEL_FLOW_PING
assert int.from_bytes(ping[17:21], "big") == 0
assert ping[21:25] == b"ping"
ping_task.cancel()
client.writer.close()
client.close.set()
await asyncio.sleep(0.1)
assert peer.multiplexer.wait().done()
async def test_init_peer_wrong_challenge(
test_client: Client,
test_server: list[Client],
) -> None:
"""Test setup multiplexer wrong challenge."""
loop = asyncio.get_running_loop()
client = test_server[0]
aes_key = os.urandom(32)
aes_iv = os.urandom(16)
valid = datetime.now(tz=UTC) + timedelta(days=1)
peer = Peer("localhost", valid, aes_key, aes_iv, snitun.PROTOCOL_VERSION)
crypto = CryptoTransport(aes_key, aes_iv)
with pytest.raises(RuntimeError):
await peer.wait_disconnect()
init_task = loop.create_task(
peer.init_multiplexer_challenge(test_client.reader, test_client.writer),
)
await asyncio.sleep(0.1)
assert not init_task.done()
token = await client.reader.readexactly(32)
client.writer.write(crypto.encrypt(token))
await client.writer.drain()
await asyncio.sleep(0.1)
with pytest.raises(SniTunChallengeError):
raise init_task.exception()
assert init_task.done()
client.writer.close()
client.close.set()
def test_init_peer_invalid() -> None:
"""Test simple init of peer with invalid date."""
valid = datetime.now(tz=UTC) - timedelta(days=1)
peer = Peer(
"localhost",
valid,
os.urandom(32),
os.urandom(16),
snitun.PROTOCOL_VERSION,
)
assert not peer.is_valid
assert peer.hostname == "localhost"
assert peer.multiplexer is None
async def test_init_peer_multiplexer_throttling(
test_client: Client,
test_server: list[Client],
) -> None:
"""Test setup multiplexer."""
loop = asyncio.get_running_loop()
client = test_server[0]
aes_key = os.urandom(32)
aes_iv = os.urandom(16)
valid = datetime.now(tz=UTC) + timedelta(days=1)
peer = Peer(
"localhost",
valid,
aes_key,
aes_iv,
snitun.PROTOCOL_VERSION,
throttling=500,
)
crypto = CryptoTransport(aes_key, aes_iv)
with pytest.raises(RuntimeError):
await peer.wait_disconnect()
init_task = loop.create_task(
peer.init_multiplexer_challenge(test_client.reader, test_client.writer),
)
await asyncio.sleep(0.1)
assert not init_task.done()
assert not peer.is_ready
assert not peer.is_connected
token = await client.reader.readexactly(32)
token = hashlib.sha256(crypto.decrypt(token)).digest()
client.writer.write(crypto.encrypt(token))
await client.writer.drain()
await asyncio.sleep(0.1)
assert init_task.exception() is None
assert init_task.done()
assert peer.is_ready
assert peer.is_connected
assert peer.multiplexer._throttling == 0.002
client.writer.close()
client.close.set()
await asyncio.sleep(0.1)
assert not peer.multiplexer.is_connected
|
