Define a base class for connection to subclass for special purposes
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efeabcb4cf
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4F97A5EA88F4AB63
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@ -15,8 +15,11 @@ import time
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from . import message, shared, structure
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class Connection(threading.Thread):
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"""The connection object"""
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class ConnectionBase(threading.Thread):
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"""
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Common code for the connection thread
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with minimum command handlers to reuse
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"""
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def __init__(
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self, host, port, s=None, network='ip', server=False,
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i2p_remote_dest=b''
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@ -344,89 +347,13 @@ class Connection(threading.Thread):
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break
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def _process_message(self, m):
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if m.command == b'version':
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version = message.Version.from_message(m)
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if shared.stream not in version.streams:
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raise ValueError('message not for stream %i' % shared.stream)
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logging.debug('%s:%s -> %s', self.host_print, self.port, version)
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if (
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version.protocol_version != shared.protocol_version
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or version.nonce == shared.nonce
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):
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self.status = 'disconnecting'
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self.send_queue.put(None)
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else:
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logging.info(
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'%s:%s claims to be %s',
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self.host_print, self.port, version.user_agent)
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self.send_queue.put(message.Message(b'verack', b''))
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self.verack_sent = True
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self.remote_version = version
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if not self.server:
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self.send_queue.put('fully_established')
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if self.network == 'ip':
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shared.address_advertise_queue.put(structure.NetAddr(
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version.services, self.host, self.port))
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shared.node_pool.add((self.host, self.port))
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elif self.network == 'i2p':
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shared.i2p_node_pool.add((self.host, 'i2p'))
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if self.network == 'ip':
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shared.address_advertise_queue.put(structure.NetAddr(
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shared.services, version.host, shared.listening_port))
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if self.server:
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if self.network == 'ip':
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self.send_queue.put(
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message.Version(self.host, self.port))
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else:
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self.send_queue.put(message.Version('127.0.0.1', 7656))
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elif m.command == b'verack':
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if m.command == b'verack':
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self.verack_received = True
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logging.debug(
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'%s:%s -> %s', self.host_print, self.port, 'verack')
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if self.server:
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self.send_queue.put('fully_established')
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elif m.command == b'inv':
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inv = message.Inv.from_message(m)
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logging.debug('%s:%s -> %s', self.host_print, self.port, inv)
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to_get = inv.vectors.copy()
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to_get.difference_update(shared.objects.keys())
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self.vectors_to_get.update(to_get)
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# Do not send objects they already have.
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self.vectors_to_send.difference_update(inv.vectors)
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elif m.command == b'object':
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obj = structure.Object.from_message(m)
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logging.debug('%s:%s -> %s', self.host_print, self.port, obj)
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self.vectors_requested.pop(obj.vector, None)
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self.vectors_to_get.discard(obj.vector)
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if obj.is_valid() and obj.vector not in shared.objects:
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with shared.objects_lock:
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shared.objects[obj.vector] = obj
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if (
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obj.object_type == shared.i2p_dest_obj_type
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and obj.version == shared.i2p_dest_obj_version
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):
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dest = base64.b64encode(obj.object_payload, altchars=b'-~')
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logging.debug(
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'Received I2P destination object,'
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' adding to i2p_unchecked_node_pool')
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logging.debug(dest)
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shared.i2p_unchecked_node_pool.add((dest, 'i2p'))
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shared.vector_advertise_queue.put(obj.vector)
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elif m.command == b'getdata':
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getdata = message.GetData.from_message(m)
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logging.debug('%s:%s -> %s', self.host_print, self.port, getdata)
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self.vectors_to_send.update(getdata.vectors)
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elif m.command == b'addr':
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addr = message.Addr.from_message(m)
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logging.debug('%s:%s -> %s', self.host_print, self.port, addr)
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for a in addr.addresses:
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shared.unchecked_node_pool.add((a.host, a.port))
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elif m.command == b'ping':
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logging.debug('%s:%s -> ping', self.host_print, self.port)
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self.send_queue.put(message.Message(b'pong', b''))
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@ -440,7 +367,51 @@ class Connection(threading.Thread):
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shared.unchecked_node_pool.discard((self.host, self.port))
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else:
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logging.debug('%s:%s -> %s', self.host_print, self.port, m)
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try:
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getattr(self, '_process_msg_{}'.format(m.command.decode()))(m)
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except (AttributeError, UnicodeDecodeError):
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logging.debug('%s:%s -> %s', self.host_print, self.port, m)
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def _process_msg_version(self, m):
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version = message.Version.from_message(m)
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if shared.stream not in version.streams:
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raise ValueError('message not for stream %i' % shared.stream)
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logging.debug('%s:%s -> %s', self.host_print, self.port, version)
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if (
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version.protocol_version != shared.protocol_version
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or version.nonce == shared.nonce
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):
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self.status = 'disconnecting'
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self.send_queue.put(None)
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else:
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logging.info(
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'%s:%s claims to be %s',
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self.host_print, self.port, version.user_agent)
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self.send_queue.put(message.Message(b'verack', b''))
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self.verack_sent = True
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self.remote_version = version
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if not self.server:
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self.send_queue.put('fully_established')
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if self.network == 'ip':
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shared.address_advertise_queue.put(structure.NetAddr(
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version.services, self.host, self.port))
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shared.node_pool.add((self.host, self.port))
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elif self.network == 'i2p':
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shared.i2p_node_pool.add((self.host, 'i2p'))
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if self.network == 'ip':
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shared.address_advertise_queue.put(structure.NetAddr(
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shared.services, version.host, shared.listening_port))
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if self.server:
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if self.network == 'ip':
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self.send_queue.put(message.Version(self.host, self.port))
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else:
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self.send_queue.put(message.Version('127.0.0.1', 7656))
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def _process_msg_addr(self, m):
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addr = message.Addr.from_message(m)
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logging.debug('%s:%s -> %s', self.host_print, self.port, addr)
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for a in addr.addresses:
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shared.unchecked_node_pool.add((a.host, a.port))
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def _request_objects(self):
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if self.vectors_to_get and len(self.vectors_requested) < 100:
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@ -499,4 +470,41 @@ class Connection(threading.Thread):
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message.Message(b'object', obj.to_bytes()))
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class Connection(ConnectionBase):
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"""The connection with all commands implementation"""
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def _process_msg_inv(self, m):
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inv = message.Inv.from_message(m)
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logging.debug('%s:%s -> %s', self.host_print, self.port, inv)
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to_get = inv.vectors.copy()
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to_get.difference_update(shared.objects.keys())
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self.vectors_to_get.update(to_get)
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# Do not send objects they already have.
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self.vectors_to_send.difference_update(inv.vectors)
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def _process_msg_object(self, m):
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obj = structure.Object.from_message(m)
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logging.debug('%s:%s -> %s', self.host_print, self.port, obj)
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self.vectors_requested.pop(obj.vector, None)
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self.vectors_to_get.discard(obj.vector)
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if obj.is_valid() and obj.vector not in shared.objects:
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with shared.objects_lock:
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shared.objects[obj.vector] = obj
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if (
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obj.object_type == shared.i2p_dest_obj_type
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and obj.version == shared.i2p_dest_obj_version
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):
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dest = base64.b64encode(obj.object_payload, altchars=b'-~')
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logging.debug(
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'Received I2P destination object,'
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' adding to i2p_unchecked_node_pool')
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logging.debug(dest)
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shared.i2p_unchecked_node_pool.add((dest, 'i2p'))
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shared.vector_advertise_queue.put(obj.vector)
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def _process_msg_getdata(self, m):
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getdata = message.GetData.from_message(m)
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logging.debug('%s:%s -> %s', self.host_print, self.port, getdata)
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self.vectors_to_send.update(getdata.vectors)
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shared.connection = Connection
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