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Improved I2P tunnel state detection. Fixed missing IFAC init on spawned I2P interfaces.

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This commit is contained in:
Mark Qvist 2022-11-03 15:22:34 +01:00
parent 0f19ced9d3
commit 1d2a0fe4c8
2 changed files with 99 additions and 25 deletions
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98
RNS/Interfaces/I2PInterface.py
View File

@ -383,6 +383,7 @@ class I2PInterfacePeer(Interface):
I2P_PROBE_AFTER = 10
I2P_PROBE_INTERVAL = 9
I2P_PROBES = 5
I2P_READ_TIMEOUT = I2P_PROBE_INTERVAL * I2P_PROBES + I2P_PROBE_AFTER
def __init__(self, parent_interface, owner, name, target_i2p_dest=None, connected_socket=None, max_reconnect_tries=None):
self.rxb = 0
@ -409,6 +410,29 @@ class I2PInterfacePeer(Interface):
self.i2p_tunnel_ready = False
self.mode = RNS.Interfaces.Interface.Interface.MODE_FULL
self.bitrate = I2PInterface.BITRATE_GUESS
self.last_read = 0
self.last_write = 0
self.wd_reset = False
self.ifac_size = self.parent_interface.ifac_size
self.ifac_netname = self.parent_interface.ifac_netname
self.ifac_netkey = self.parent_interface.ifac_netkey
if self.ifac_netname != None or self.ifac_netkey != None:
ifac_origin = b""
if self.ifac_netname != None:
ifac_origin += RNS.Identity.full_hash(self.ifac_netname.encode("utf-8"))
if self.ifac_netkey != None:
ifac_origin += RNS.Identity.full_hash(self.ifac_netkey.encode("utf-8"))
ifac_origin_hash = RNS.Identity.full_hash(ifac_origin)
self.ifac_key = RNS.Cryptography.hkdf(
length=64,
derive_from=ifac_origin_hash,
salt=RNS.Reticulum.IFAC_SALT,
context=None
)
self.ifac_identity = RNS.Identity.from_bytes(self.ifac_key)
self.ifac_signature = self.ifac_identity.sign(RNS.Identity.full_hash(self.ifac_key))
self.announce_rate_target = None
self.announce_rate_grace = None
@ -482,13 +506,6 @@ class I2PInterfacePeer(Interface):
def set_timeouts_linux(self):
if not self.i2p_tunneled:
self.socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_USER_TIMEOUT, int(I2PInterfacePeer.TCP_USER_TIMEOUT * 1000))
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
self.socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPIDLE, int(I2PInterfacePeer.TCP_PROBE_AFTER))
self.socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPINTVL, int(I2PInterfacePeer.TCP_PROBE_INTERVAL))
self.socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPCNT, int(I2PInterfacePeer.TCP_PROBES))
else:
self.socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_USER_TIMEOUT, int(I2PInterfacePeer.I2P_USER_TIMEOUT * 1000))
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
self.socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPIDLE, int(I2PInterfacePeer.I2P_PROBE_AFTER))
@ -502,10 +519,6 @@ class I2PInterfacePeer(Interface):
TCP_KEEPIDLE = 0x10
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
if not self.i2p_tunneled:
self.socket.setsockopt(socket.IPPROTO_TCP, TCP_KEEPIDLE, int(I2PInterfacePeer.TCP_PROBE_AFTER))
else:
self.socket.setsockopt(socket.IPPROTO_TCP, TCP_KEEPIDLE, int(I2PInterfacePeer.I2P_PROBE_AFTER))
def shutdown_socket(self, socket):
@ -571,7 +584,6 @@ class I2PInterfacePeer(Interface):
return True
def reconnect(self):
if self.initiator:
if not self.reconnecting:
@ -632,6 +644,7 @@ class I2PInterfacePeer(Interface):
self.socket.sendall(data)
self.writing = False
self.txb += len(data)
self.last_write = time.time()
if hasattr(self, "parent_interface") and self.parent_interface != None and self.parent_count:
self.parent_interface.txb += len(data)
@ -642,8 +655,42 @@ class I2PInterfacePeer(Interface):
self.teardown()
def read_watchdog(self):
while self.wd_reset:
time.sleep(0.25)
should_run = True
try:
while should_run and not self.wd_reset:
if (time.time()-self.last_write > I2PInterfacePeer.I2P_PROBE_AFTER*0.66):
self.processOutgoing(bytes([0x00]))
if (time.time()-self.last_read > I2PInterfacePeer.I2P_READ_TIMEOUT):
RNS.log("I2P socket seems dead, restarting...", RNS.LOG_DEBUG)
if self.socket != None:
try:
self.socket.shutdown(socket.SHUT_RDWR)
except Exception as e:
RNS.log("Error while shutting down socket for "+str(self)+": "+str(e))
try:
self.socket.close()
except Exception as e:
RNS.log("Error while closing socket for "+str(self)+": "+str(e))
should_run = False
time.sleep(1)
finally:
self.wd_reset = False
def read_loop(self):
try:
self.last_read = time.time()
self.last_write = time.time()
wd_thread = threading.Thread(target=self.read_watchdog, daemon=True).start()
in_frame = False
escape = False
data_buffer = b""
@ -653,6 +700,7 @@ class I2PInterfacePeer(Interface):
data_in = self.socket.recv(4096)
if len(data_in) > 0:
pointer = 0
last_read = time.time()
while pointer < len(data_in):
byte = data_in[pointer]
pointer += 1
@ -661,6 +709,7 @@ class I2PInterfacePeer(Interface):
# Read loop for KISS framing
if (in_frame and byte == KISS.FEND and command == KISS.CMD_DATA):
in_frame = False
if len(data_buffer > RNS.Reticulum.HEADER_MINSIZE+1):
self.processIncoming(data_buffer)
elif (byte == KISS.FEND):
in_frame = True
@ -688,6 +737,7 @@ class I2PInterfacePeer(Interface):
# Read loop for HDLC framing
if (in_frame and byte == HDLC.FLAG):
in_frame = False
if len(data_buffer > RNS.Reticulum.HEADER_MINSIZE+1):
self.processIncoming(data_buffer)
elif (byte == HDLC.FLAG):
in_frame = True
@ -704,6 +754,7 @@ class I2PInterfacePeer(Interface):
escape = False
data_buffer = data_buffer+bytes([byte])
else:
self.wd_reset = True
self.online = False
if self.initiator and not self.detached:
RNS.log("Socket for "+str(self)+" was closed, attempting to reconnect...", RNS.LOG_WARNING)
@ -754,7 +805,7 @@ class I2PInterfacePeer(Interface):
class I2PInterface(Interface):
BITRATE_GUESS = 256*1000
def __init__(self, owner, name, rns_storagepath, peers, connectable = False):
def __init__(self, owner, name, rns_storagepath, peers, connectable = False, ifac_size = 16, ifac_netname = None, ifac_netkey = None):
self.rxb = 0
self.txb = 0
@ -780,6 +831,9 @@ class I2PInterface(Interface):
self.bind_port = self.i2p.get_free_port()
self.address = (self.bind_ip, self.bind_port)
self.bitrate = I2PInterface.BITRATE_GUESS
self.ifac_size = ifac_size
self.ifac_netname = ifac_netname
self.ifac_netkey = ifac_netkey
self.online = False
@ -850,9 +904,27 @@ class I2PInterface(Interface):
spawned_interface.parent_interface = self
spawned_interface.online = True
spawned_interface.bitrate = self.bitrate
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))
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

10
RNS/Reticulum.py
View File

@ -631,12 +631,18 @@ class Reticulum:
i2p_peers = c.as_list("peers") if "peers" in c else None
connectable = c.as_bool("connectable") if "connectable" in c else False
if ifac_size == None:
ifac_size = 16
interface = I2PInterface.I2PInterface(
RNS.Transport,
name,
Reticulum.storagepath,
i2p_peers,
connectable = connectable,
ifac_size = ifac_size,
ifac_netname = ifac_netname,
ifac_netkey = ifac_netkey,
)
if "outgoing" in c and c.as_bool("outgoing") == False:
@ -653,10 +659,6 @@ class Reticulum:
interface.announce_cap = announce_cap
if configured_bitrate:
interface.bitrate = configured_bitrate
if ifac_size != None:
interface.ifac_size = ifac_size
else:
interface.ifac_size = 16
if c["type"] == "SerialInterface":
port = c["port"] if "port" in c else None