92 lines
2.9 KiB
Python
92 lines
2.9 KiB
Python
# -*- coding: utf-8 -*-
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import base64
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import logging
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import os
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import socket
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import time
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from .util import I2PThread, pub_from_priv
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class I2PController(I2PThread):
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def __init__(self, state, host='127.0.0.1', port=7656, dest_priv=b''):
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super().__init__(state, name='I2P Controller')
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self.host = host
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self.port = port
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self.nick = b'MiNode_' + base64.b16encode(os.urandom(4)).lower()
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while True:
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if state.shutting_down:
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return
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try:
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self.s = socket.create_connection((self.host, self.port))
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break
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except ConnectionRefusedError:
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logging.error(
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'Error while connecting to I2P SAM bridge. Retrying.')
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time.sleep(10)
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self.version_reply = []
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self.init_connection()
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if dest_priv:
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self.dest_priv = dest_priv
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self.dest_pub = pub_from_priv(dest_priv)
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else:
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self.dest_priv = b''
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self.dest_pub = b''
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self.generate_destination()
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self.create_session()
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def init_connection(self):
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self._send(b'HELLO VERSION MIN=3.0 MAX=3.3\n')
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self.version_reply = self._receive_line().split()
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assert b'RESULT=OK' in self.version_reply
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def generate_destination(self):
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if b'VERSION=3.0' in self.version_reply:
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# We will now receive old DSA_SHA1 destination :(
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self._send(b'DEST GENERATE\n')
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else:
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self._send(b'DEST GENERATE SIGNATURE_TYPE=EdDSA_SHA512_Ed25519\n')
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reply = self._receive_line().split()
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for par in reply:
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if par.startswith(b'PUB='):
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self.dest_pub = par.replace(b'PUB=', b'')
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if par.startswith(b'PRIV='):
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self.dest_priv = par.replace(b'PRIV=', b'')
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assert self.dest_priv
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def create_session(self):
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self._send(
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b'SESSION CREATE STYLE=STREAM ID=' + self.nick
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+ b' inbound.length=' + str(self.state.i2p_tunnel_length).encode()
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+ b' outbound.length=' + str(self.state.i2p_tunnel_length).encode()
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+ b' DESTINATION=' + self.dest_priv + b'\n')
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reply = self._receive_line().split()
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if b'RESULT=OK' not in reply:
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logging.warning(reply)
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logging.warning(
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'We could not create I2P session, retrying in 5 seconds.')
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time.sleep(5)
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self.create_session()
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def run(self):
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self.s.settimeout(1)
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while True:
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if not self.state.shutting_down:
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try:
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msg = self._receive_line().split(b' ')
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if msg[0] == b'PING':
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self._send(b'PONG ' + msg[1] + b'\n')
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except socket.timeout:
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pass
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else:
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logging.debug('Shutting down I2P Controller')
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self.s.close()
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break
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