Work on tunnels
This commit is contained in:
Mark Qvist
parent
c1e280d896
commit
80455c9614
@ -781,10 +781,18 @@ class Transport:
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new_announce.hops = packet.hops
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new_announce.send()
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Transport.destination_table[packet.destination_hash] = [now, received_from, announce_hops, expires, random_blobs, packet.receiving_interface, packet]
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destination_table_entry = [now, received_from, announce_hops, expires, random_blobs, packet.receiving_interface, packet]
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Transport.destination_table[packet.destination_hash] = destination_table_entry
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RNS.log("Path to "+RNS.prettyhexrep(packet.destination_hash)+" is now "+str(announce_hops)+" hops away via "+RNS.prettyhexrep(received_from)+" on "+str(packet.receiving_interface), RNS.LOG_VERBOSE)
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# If the receiving interface is a tunnel, we add the
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# announce to the tunnels table
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if hasattr(packet.receiving_interface, "tunnel_id") and packet.receiving_interface.tunnel_id != None:
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tunnel_entry = Transport.tunnels[packet.receiving_interface.tunnel_id]
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paths = tunnel_entry[2]
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paths[packet.destination_hash] = destination_table_entry
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RNS.log("Path to "+RNS.prettyhexrep(packet.destination_hash)+" associated with tunnel "+RNS.prettyhexrep(packet.receiving_interface.tunnel_id), RNS.LOG_VERBOSE)
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# Call externally registered callbacks from apps
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# wanting to know when an announce arrives
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for handler in Transport.announce_handlers:
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@ -928,13 +936,13 @@ class Transport:
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tnl_snth_dst = RNS.Destination(None, RNS.Destination.OUT, RNS.Destination.PLAIN, Transport.APP_NAME, "tunnel", "synthesize")
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# TODO: Remove
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RNS.log("Tunnel synth for "+str(interface))
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RNS.log("Transport ID : "+str(Transport.identity))
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RNS.log("Tunnel ID : "+RNS.hexrep(tunnel_id))
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RNS.log("IF hash : "+RNS.hexrep(interface_hash))
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RNS.log("Rnd hash : "+RNS.hexrep(random_hash))
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RNS.log("Public key : "+RNS.hexrep(public_key))
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RNS.log("Signature : "+RNS.hexrep(signature))
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# RNS.log("Tunnel synth for "+str(interface))
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# RNS.log("Transport ID : "+str(Transport.identity))
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# RNS.log("Tunnel ID : "+RNS.hexrep(tunnel_id))
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# RNS.log("IF hash : "+RNS.hexrep(interface_hash))
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# RNS.log("Rnd hash : "+RNS.hexrep(random_hash))
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# RNS.log("Public key : "+RNS.hexrep(public_key))
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# RNS.log("Signature : "+RNS.hexrep(signature))
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packet = RNS.Packet(tnl_snth_dst, data, packet_type = RNS.Packet.DATA, transport_type = RNS.Transport.BROADCAST, header_type = RNS.Packet.HEADER_1, attached_interface = interface)
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packet.send()
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@ -943,44 +951,45 @@ class Transport:
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@staticmethod
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def tunnel_synthesize_handler(data, packet):
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# TODO: Remove
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RNS.log("Received tunnel synthesize packet ("+str(len(data))+"):\n"+RNS.hexrep(data))
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try:
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expected_length = RNS.Identity.KEYSIZE//8+RNS.Identity.HASHLENGTH//8+RNS.Reticulum.TRUNCATED_HASHLENGTH//8+RNS.Identity.SIGLENGTH//8
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if len(data) == expected_length:
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public_key = data[:RNS.Identity.KEYSIZE//8]
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interface_hash = data[RNS.Identity.KEYSIZE//8:RNS.Identity.KEYSIZE//8+RNS.Identity.HASHLENGTH//8]
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tunnel_id_data = public_key+interface_hash
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tunnel_id = RNS.Identity.full_hash(tunnel_id_data)
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random_hash = data[RNS.Identity.KEYSIZE//8+RNS.Identity.HASHLENGTH//8:RNS.Identity.KEYSIZE//8+RNS.Identity.HASHLENGTH//8+RNS.Reticulum.TRUNCATED_HASHLENGTH//8]
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signature = data[RNS.Identity.KEYSIZE//8+RNS.Identity.HASHLENGTH//8+RNS.Reticulum.TRUNCATED_HASHLENGTH//8:expected_length]
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signed_data = tunnel_id_data+random_hash
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expected_length = RNS.Identity.KEYSIZE//8+RNS.Identity.HASHLENGTH//8+RNS.Reticulum.TRUNCATED_HASHLENGTH//8+RNS.Identity.SIGLENGTH//8
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if len(data) == expected_length:
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public_key = data[:RNS.Identity.KEYSIZE//8]
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interface_hash = data[RNS.Identity.KEYSIZE//8:RNS.Identity.KEYSIZE//8+RNS.Identity.HASHLENGTH//8]
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tunnel_id_data = public_key+interface_hash
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tunnel_id = RNS.Identity.full_hash(tunnel_id_data)
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random_hash = data[RNS.Identity.KEYSIZE//8+RNS.Identity.HASHLENGTH//8:RNS.Identity.KEYSIZE//8+RNS.Identity.HASHLENGTH//8+RNS.Reticulum.TRUNCATED_HASHLENGTH//8]
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signature = data[RNS.Identity.KEYSIZE//8+RNS.Identity.HASHLENGTH//8+RNS.Reticulum.TRUNCATED_HASHLENGTH//8:expected_length]
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signed_data = tunnel_id_data+random_hash
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remote_transport_identity = RNS.Identity(create_keys=False)
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remote_transport_identity.load_public_key(public_key)
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remote_transport_identity = RNS.Identity(create_keys=False)
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remote_transport_identity.load_public_key(public_key)
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# TODO: Remove
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RNS.log("Transport ID : "+str(remote_transport_identity))
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RNS.log("Tunnel ID : "+RNS.hexrep(tunnel_id))
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RNS.log("IF hash : "+RNS.hexrep(interface_hash))
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RNS.log("Rnd hash : "+RNS.hexrep(random_hash))
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RNS.log("Public key : "+RNS.hexrep(public_key))
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RNS.log("Signature : "+RNS.hexrep(signature))
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if remote_transport_identity.validate(signature, signed_data):
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RNS.log("Signature is valid")
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Transport.handle_tunnel(tunnel_id, packet.receiving_interface)
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else:
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# TODO: Remove
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RNS.log("Signature is invalid")
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# RNS.log("Transport ID : "+str(remote_transport_identity))
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# RNS.log("Tunnel ID : "+RNS.hexrep(tunnel_id))
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# RNS.log("IF hash : "+RNS.hexrep(interface_hash))
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# RNS.log("Rnd hash : "+RNS.hexrep(random_hash))
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# RNS.log("Public key : "+RNS.hexrep(public_key))
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# RNS.log("Signature : "+RNS.hexrep(signature))
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if remote_transport_identity.validate(signature, signed_data):
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# RNS.log("Signature is valid")
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Transport.handle_tunnel(tunnel_id, packet.receiving_interface)
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# else:
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# TODO: Remove
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# RNS.log("Signature is invalid")
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except Exception as e:
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RNS.log("An error occurred while validating tunnel establishment packet.", RNS.LOG_DEBUG)
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RNS.log("The contained exception was: "+str(e), RNS.LOG_DEBUG)
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@staticmethod
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def handle_tunnel(tunnel_id, interface):
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if not tunnel_id in Transport.tunnels:
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RNS.log("Tunnel endpoint "+RNS.prettyhexrep(tunnel_id)+" established.", RNS.LOG_DEBUG)
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announces = []
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tunnel_entry = [tunnel_id, interface, announces]
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paths = []
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tunnel_entry = [tunnel_id, interface, paths]
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interface.tunnel_id = tunnel_id
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Transport.tunnels[tunnel_id] = tunnel_entry
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else:
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@ -988,9 +997,9 @@ class Transport:
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tunnel_entry = Transport.tunnels[tunnel_id]
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tunnel_entry[1] = interface
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interface.tunnel_id = tunnel_id
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announces = tunnel_entry[2]
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paths = tunnel_entry[2]
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for announce in announces:
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for path_entry in paths:
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# Reassign paths
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pass
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