mirror of
https://github.com/markqvist/Reticulum.git
synced 2024-12-24 21:00:17 +00:00
235 lines
8.8 KiB
Python
235 lines
8.8 KiB
Python
import logging
|
|
import asyncio
|
|
import argparse
|
|
|
|
from . import sam
|
|
from . import aiosam
|
|
from . import utils
|
|
from .log import logger
|
|
|
|
BUFFER_SIZE = 65536
|
|
|
|
async def proxy_data(reader, writer):
|
|
"""Proxy data from reader to writer"""
|
|
try:
|
|
while True:
|
|
data = await reader.read(BUFFER_SIZE)
|
|
if not data:
|
|
break
|
|
writer.write(data)
|
|
except Exception as e:
|
|
logger.debug('proxy_data_task exception {}'.format(e))
|
|
finally:
|
|
try:
|
|
writer.close()
|
|
except RuntimeError:
|
|
pass
|
|
logger.debug('close connection')
|
|
|
|
class I2PTunnel(object):
|
|
"""Base I2P Tunnel object, not to be used directly
|
|
|
|
:param local_address: A local address to use for a tunnel.
|
|
E.g. ("127.0.0.1", 6668)
|
|
:param destination: (optional) Destination to use for this tunnel. Can be
|
|
a base64 encoded string, :class:`Destination`
|
|
instance or None. A new destination is created when it
|
|
is None.
|
|
:param session_name: (optional) Session nick name. A new session nickname is
|
|
generated if not specified.
|
|
:param options: (optional) A dict object with i2cp options
|
|
:param loop: (optional) Event loop instance
|
|
:param sam_address: (optional) SAM API address
|
|
"""
|
|
|
|
def __init__(self, local_address, destination=None, session_name=None,
|
|
options={}, loop=None, sam_address=sam.DEFAULT_ADDRESS):
|
|
self.local_address = local_address
|
|
self.destination = destination
|
|
self.session_name = session_name or utils.generate_session_id()
|
|
self.options = options
|
|
self.loop = loop
|
|
self.sam_address = sam_address
|
|
|
|
async def _pre_run(self):
|
|
if not self.destination:
|
|
self.destination = await aiosam.new_destination(
|
|
sam_address=self.sam_address, loop=self.loop)
|
|
_, self.session_writer = await aiosam.create_session(
|
|
self.session_name, style=self.style, options=self.options,
|
|
sam_address=self.sam_address,
|
|
loop=self.loop, destination=self.destination)
|
|
|
|
def stop(self):
|
|
"""Stop the tunnel"""
|
|
self.session_writer.close()
|
|
|
|
class ClientTunnel(I2PTunnel):
|
|
"""Client tunnel, a subclass of tunnel.I2PTunnel
|
|
|
|
If you run a client tunnel with a local address ("127.0.0.1", 6668) and
|
|
a remote destination "irc.echelon.i2p", all connections to 127.0.0.1:6668
|
|
will be proxied to irc.echelon.i2p.
|
|
|
|
:param remote_destination: Remote I2P destination, can be either .i2p
|
|
domain, .b32.i2p address, base64 destination or
|
|
:class:`Destination` instance
|
|
"""
|
|
|
|
def __init__(self, remote_destination, *args, **kwargs):
|
|
super().__init__(*args, **kwargs)
|
|
self.style = "STREAM"
|
|
self.remote_destination = remote_destination
|
|
|
|
async def run(self):
|
|
"""A coroutine used to run the tunnel"""
|
|
await self._pre_run()
|
|
|
|
self.status = { "setup_ran": False, "setup_failed": False, "exception": None, "connect_tasks": [] }
|
|
async def handle_client(client_reader, client_writer):
|
|
"""Handle local client connection"""
|
|
try:
|
|
sc_task = aiosam.stream_connect(
|
|
self.session_name, self.remote_destination,
|
|
sam_address=self.sam_address, loop=self.loop)
|
|
self.status["connect_tasks"].append(sc_task)
|
|
|
|
remote_reader, remote_writer = await sc_task
|
|
asyncio.ensure_future(proxy_data(remote_reader, client_writer),
|
|
loop=self.loop)
|
|
asyncio.ensure_future(proxy_data(client_reader, remote_writer),
|
|
loop=self.loop)
|
|
|
|
except Exception as e:
|
|
self.status["setup_ran"] = True
|
|
self.status["setup_failed"] = True
|
|
self.status["exception"] = e
|
|
|
|
|
|
try:
|
|
self.server = await asyncio.start_server(handle_client, *self.local_address)
|
|
self.status["setup_ran"] = True
|
|
|
|
except Exception as e:
|
|
self.status["setup_ran"] = True
|
|
self.status["setup_failed"] = True
|
|
self.status["exception"] = e
|
|
|
|
def stop(self):
|
|
super().stop()
|
|
self.server.close()
|
|
|
|
class ServerTunnel(I2PTunnel):
|
|
"""Server tunnel, a subclass of tunnel.I2PTunnel
|
|
|
|
If you want to expose a local service 127.0.0.1:80 to the I2P network, run
|
|
a server tunnel with a local address ("127.0.0.1", 80). If you don't
|
|
provide a private key or a session name, it will use a TRANSIENT
|
|
destination.
|
|
"""
|
|
def __init__(self, *args, **kwargs):
|
|
super().__init__(*args, **kwargs)
|
|
self.style = "STREAM"
|
|
|
|
async def run(self):
|
|
"""A coroutine used to run the tunnel"""
|
|
await self._pre_run()
|
|
|
|
self.status = { "setup_ran": False, "setup_failed": False, "exception": None, "connect_tasks": [] }
|
|
async def handle_client(incoming, client_reader, client_writer):
|
|
try:
|
|
# data and dest may come in one chunk
|
|
dest, data = incoming.split(b"\n", 1)
|
|
remote_destination = sam.Destination(dest.decode())
|
|
logger.debug("{} client connected: {}.b32.i2p".format(
|
|
self.session_name, remote_destination.base32))
|
|
|
|
except Exception as e:
|
|
self.status["exception"] = e
|
|
self.status["setup_failed"] = True
|
|
data = None
|
|
|
|
try:
|
|
sc_task = asyncio.wait_for(
|
|
asyncio.open_connection(
|
|
host=self.local_address[0],
|
|
port=self.local_address[1]),
|
|
timeout=5)
|
|
self.status["connect_tasks"].append(sc_task)
|
|
|
|
remote_reader, remote_writer = await sc_task
|
|
if data: remote_writer.write(data)
|
|
asyncio.ensure_future(proxy_data(remote_reader, client_writer),
|
|
loop=self.loop)
|
|
asyncio.ensure_future(proxy_data(client_reader, remote_writer),
|
|
loop=self.loop)
|
|
|
|
except ConnectionRefusedError:
|
|
client_writer.close()
|
|
self.status["exception"] = e
|
|
self.status["setup_failed"] = True
|
|
|
|
async def server_loop():
|
|
try:
|
|
while True:
|
|
client_reader, client_writer = await aiosam.stream_accept(
|
|
self.session_name, sam_address=self.sam_address,
|
|
loop=self.loop)
|
|
incoming = await client_reader.read(BUFFER_SIZE)
|
|
asyncio.ensure_future(handle_client(
|
|
incoming, client_reader, client_writer), loop=self.loop)
|
|
except asyncio.CancelledError:
|
|
pass
|
|
|
|
self.server_loop = asyncio.ensure_future(server_loop(), loop=self.loop)
|
|
self.status["setup_ran"] = True
|
|
|
|
def stop(self):
|
|
super().stop()
|
|
self.server_loop.cancel()
|
|
|
|
|
|
if __name__ == '__main__':
|
|
parser = argparse.ArgumentParser()
|
|
parser.add_argument('type', metavar="TYPE", choices=('server', 'client'),
|
|
help="Tunnel type (server or client)")
|
|
parser.add_argument('address', metavar="ADDRESS",
|
|
help="Local address (e.g. 127.0.0.1:8000)")
|
|
parser.add_argument('--debug', '-d', action='store_true',
|
|
help='Debugging')
|
|
parser.add_argument('--key', '-k', default='', metavar='PRIVATE_KEY',
|
|
help='Path to private key file')
|
|
parser.add_argument('--destination', '-D', default='',
|
|
metavar='DESTINATION', help='Remote destination')
|
|
args = parser.parse_args()
|
|
|
|
SAM_ADDRESS = utils.get_sam_address()
|
|
|
|
logging.basicConfig(level=logging.DEBUG if args.debug else logging.INFO)
|
|
loop = asyncio.get_event_loop()
|
|
loop.set_debug(args.debug)
|
|
|
|
if args.key:
|
|
destination = sam.Destination(path=args.key, has_private_key=True)
|
|
else:
|
|
destination = None
|
|
|
|
local_address = utils.address_from_string(args.address)
|
|
|
|
if args.type == "client":
|
|
tunnel = ClientTunnel(args.destination, local_address, loop=loop,
|
|
destination=destination, sam_address=SAM_ADDRESS)
|
|
elif args.type == "server":
|
|
tunnel = ServerTunnel(local_address, loop=loop, destination=destination,
|
|
sam_address=SAM_ADDRESS)
|
|
|
|
asyncio.ensure_future(tunnel.run(), loop=loop)
|
|
|
|
try:
|
|
loop.run_forever()
|
|
except KeyboardInterrupt:
|
|
tunnel.stop()
|
|
finally:
|
|
loop.stop()
|
|
loop.close()
|