py-libp2p/tests/security/test_security_multistream.py

import asyncio
import multiaddr
import pytest

from libp2p import new_node
from libp2p.peer.peerinfo import info_from_p2p_addr
from tests.utils import cleanup, set_up_nodes_by_transport_opt
from libp2p.security.security_multistream import SecurityMultistream
from libp2p.security.insecure_security import InsecureConn, InsecureTransport
from simple_security import SimpleSecurityTransport

# TODO: Add tests for multiple streams being opened on different
# protocols through the same connection

def peer_id_for_node(node):
    addr = node.get_addrs()[0]
    info = info_from_p2p_addr(addr)
    return info.peer_id

async def connect(node1, node2):
    """
    Connect node1 to node2
    """
    addr = node2.get_addrs()[0]
    info = info_from_p2p_addr(addr)
    await node1.connect(info)

async def perform_simple_test(assertion_func, transports_for_initiator, transports_for_noninitiator):
    
    # Create libp2p nodes and connect them, then secure the connection, then check
    # the proper security was chosen
    # TODO: implement -- note we need to introduce the notion of communicating over a raw connection
    # for testing, we do NOT want to communicate over a stream so we can't just create two nodes
    # and use their conn because our mplex will internally relay messages to a stream
    sec_opt1 = dict((str(i), transport) for i, transport in enumerate(transports_for_initiator))
    sec_opt2 = dict((str(i), transport) for i, transport in enumerate(transports_for_noninitiator))

    node1 = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/0"], sec_opt=sec_opt1)
    node2 = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/0"], sec_opt=sec_opt2)

    await node1.get_network().listen(multiaddr.Multiaddr("/ip4/127.0.0.1/tcp/0"))
    await node2.get_network().listen(multiaddr.Multiaddr("/ip4/127.0.0.1/tcp/0"))

    await connect(node1, node2)

    # Wait a very short period to allow conns to be stored (since the functions 
    # storing the conns are async, they may happen at slightly different times
    # on each node) 
    await asyncio.sleep(0.1)

    # Get conns
    node1_conn = node1.get_network().connections[peer_id_for_node(node2)]
    node2_conn = node2.get_network().connections[peer_id_for_node(node1)]

    # Perform assertion
    assertion_func(node1_conn.secured_conn.get_security_details())
    assertion_func(node2_conn.secured_conn.get_security_details())

    # Success, terminate pending tasks.
    await cleanup()


@pytest.mark.asyncio
async def test_single_insecure_security_transport_succeeds():
    transports_for_initiator = [InsecureTransport("foo")]
    transports_for_noninitiator = [InsecureTransport("foo")]

    def assertion_func(details):
        assert details["id"] == "foo"

    await perform_simple_test(assertion_func,
                              transports_for_initiator, transports_for_noninitiator)

@pytest.mark.asyncio
async def test_single_simple_test_security_transport_succeeds():
    transports_for_initiator = [SimpleSecurityTransport("tacos")]
    transports_for_noninitiator = [SimpleSecurityTransport("tacos")]

    def assertion_func(details):
        assert details["key_phrase"] == "tacos"

    await perform_simple_test(assertion_func,
                              transports_for_initiator, transports_for_noninitiator)