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Fixed potential unhandled exception on fast-flapping connections
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This commit is contained in:
Mark Qvist 2025-05-08 10:57:34 +02:00
parent 9a1884cfec
commit c398b34dd8
1 changed files with 47 additions and 41 deletions
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88
RNS/Interfaces/BackboneInterface.py
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@ -319,7 +319,8 @@ class BackboneInterface(Interface):
client_socket, address = server_socket.accept()
client_socket.setblocking(0)
if not owner_interface.incoming_connection(client_socket):
client_socket.close()
try: client_socket.close()
except Exception as e: RNS.log(f"Error while closing socket for failed incoming connection: {e}", RNS.LOG_ERROR)
elif fileno == server_socket.fileno() and (event & select.EPOLLHUP):
try: BackboneInterface.deregister_fileno(fileno)
@ -337,48 +338,53 @@ class BackboneInterface(Interface):
def incoming_connection(self, socket):
RNS.log("Accepting incoming connection", RNS.LOG_VERBOSE)
spawned_configuration = {"name": "Client on "+self.name, "target_host": None, "target_port": None}
spawned_interface = BackboneClientInterface(self.owner, spawned_configuration, connected_socket=socket)
spawned_interface.OUT = self.OUT
spawned_interface.IN = self.IN
spawned_interface.socket = socket
spawned_interface.target_ip = socket.getpeername()[0]
spawned_interface.target_port = str(socket.getpeername()[1])
spawned_interface.parent_interface = self
spawned_interface.bitrate = self.bitrate
spawned_interface.optimise_mtu()
spawned_interface.ifac_size = self.ifac_size
spawned_interface.ifac_netname = self.ifac_netname
spawned_interface.ifac_netkey = self.ifac_netkey
if spawned_interface.ifac_netname != None or spawned_interface.ifac_netkey != None:
ifac_origin = b""
if spawned_interface.ifac_netname != None:
ifac_origin += RNS.Identity.full_hash(spawned_interface.ifac_netname.encode("utf-8"))
if spawned_interface.ifac_netkey != None:
ifac_origin += RNS.Identity.full_hash(spawned_interface.ifac_netkey.encode("utf-8"))
try:
spawned_configuration = {"name": "Client on "+self.name, "target_host": None, "target_port": None}
spawned_interface = BackboneClientInterface(self.owner, spawned_configuration, connected_socket=socket)
spawned_interface.OUT = self.OUT
spawned_interface.IN = self.IN
spawned_interface.socket = socket
spawned_interface.target_ip = socket.getpeername()[0]
spawned_interface.target_port = str(socket.getpeername()[1])
spawned_interface.parent_interface = self
spawned_interface.bitrate = self.bitrate
spawned_interface.optimise_mtu()
spawned_interface.ifac_size = self.ifac_size
spawned_interface.ifac_netname = self.ifac_netname
spawned_interface.ifac_netkey = self.ifac_netkey
if spawned_interface.ifac_netname != None or spawned_interface.ifac_netkey != None:
ifac_origin = b""
if spawned_interface.ifac_netname != None:
ifac_origin += RNS.Identity.full_hash(spawned_interface.ifac_netname.encode("utf-8"))
if spawned_interface.ifac_netkey != None:
ifac_origin += RNS.Identity.full_hash(spawned_interface.ifac_netkey.encode("utf-8"))
ifac_origin_hash = RNS.Identity.full_hash(ifac_origin)
spawned_interface.ifac_key = RNS.Cryptography.hkdf(
length=64,
derive_from=ifac_origin_hash,
salt=RNS.Reticulum.IFAC_SALT,
context=None
)
spawned_interface.ifac_identity = RNS.Identity.from_bytes(spawned_interface.ifac_key)
spawned_interface.ifac_signature = spawned_interface.ifac_identity.sign(RNS.Identity.full_hash(spawned_interface.ifac_key))
ifac_origin_hash = RNS.Identity.full_hash(ifac_origin)
spawned_interface.ifac_key = RNS.Cryptography.hkdf(
length=64,
derive_from=ifac_origin_hash,
salt=RNS.Reticulum.IFAC_SALT,
context=None
)
spawned_interface.ifac_identity = RNS.Identity.from_bytes(spawned_interface.ifac_key)
spawned_interface.ifac_signature = spawned_interface.ifac_identity.sign(RNS.Identity.full_hash(spawned_interface.ifac_key))
spawned_interface.announce_rate_target = self.announce_rate_target
spawned_interface.announce_rate_grace = self.announce_rate_grace
spawned_interface.announce_rate_penalty = self.announce_rate_penalty
spawned_interface.mode = self.mode
spawned_interface.HW_MTU = self.HW_MTU
spawned_interface.online = True
RNS.log("Spawned new BackboneClient Interface: "+str(spawned_interface), RNS.LOG_VERBOSE)
RNS.Transport.interfaces.append(spawned_interface)
while spawned_interface in self.spawned_interfaces: self.spawned_interfaces.remove(spawned_interface)
self.spawned_interfaces.append(spawned_interface)
BackboneInterface.add_client_socket(socket, spawned_interface)
spawned_interface.announce_rate_target = self.announce_rate_target
spawned_interface.announce_rate_grace = self.announce_rate_grace
spawned_interface.announce_rate_penalty = self.announce_rate_penalty
spawned_interface.mode = self.mode
spawned_interface.HW_MTU = self.HW_MTU
spawned_interface.online = True
RNS.log("Spawned new BackboneClient Interface: "+str(spawned_interface), RNS.LOG_VERBOSE)
RNS.Transport.interfaces.append(spawned_interface)
while spawned_interface in self.spawned_interfaces: self.spawned_interfaces.remove(spawned_interface)
self.spawned_interfaces.append(spawned_interface)
BackboneInterface.add_client_socket(socket, spawned_interface)
except Exception as e:
RNS.log(f"An error occurred while accepting incoming connection on {self}: {e}", RNS.LOG_ERROR)
return False
return True