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https://github.com/markqvist/Reticulum.git
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Fixed missing check for zero-length packets on IFAC-enabled interfaces. Fixes #65.
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parent
214ee9d771
commit
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@ -376,7 +376,7 @@ class RNodeInterface(Interface):
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self.bitrate = 0
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def processIncoming(self, data):
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self.rxb += len(data)
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self.rxb += len(data)
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self.owner.inbound(data, self)
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self.r_stat_rssi = None
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self.r_stat_snr = None
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@ -26,7 +26,6 @@ import time
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import math
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import struct
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import threading
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import traceback
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from time import sleep
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from .vendor import umsgpack as umsgpack
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@ -284,9 +283,6 @@ class Transport:
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def jobs():
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outgoing = []
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Transport.jobs_running = True
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# TODO: Remove at some point
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# start_time = time.time()
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try:
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if not Transport.jobs_locked:
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@ -508,17 +504,9 @@ class Transport:
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except Exception as e:
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RNS.log("An exception occurred while running Transport jobs.", RNS.LOG_ERROR)
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RNS.log("The contained exception was: "+str(e), RNS.LOG_ERROR)
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traceback.print_exc()
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Transport.jobs_running = False
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# TODO: Remove at some point
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# end_time = time.time()
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# if RNS.loglevel >= RNS.LOG_EXTREME:
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# duration = round((end_time - start_time) * 1000, 2)
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# if duration > 1:
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# RNS.log("Transport jobs took "+str(duration)+"ms", RNS.LOG_EXTREME)
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for packet in outgoing:
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packet.send()
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@ -822,42 +810,43 @@ class Transport:
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def inbound(raw, interface=None):
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# If interface access codes are enabled,
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# we must authenticate each packet.
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if interface != None and hasattr(interface, "ifac_identity") and interface.ifac_identity != None:
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# Check that IFAC flag is set
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if raw[0] & 0x80 == 0x80:
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if len(raw) > 2+interface.ifac_size:
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# Extract IFAC
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ifac = raw[2:2+interface.ifac_size]
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if len(raw) > 1:
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if interface != None and hasattr(interface, "ifac_identity") and interface.ifac_identity != None:
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# Check that IFAC flag is set
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if raw[0] & 0x80 == 0x80:
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if len(raw) > 2+interface.ifac_size:
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# Extract IFAC
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ifac = raw[2:2+interface.ifac_size]
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# Unset IFAC flag
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new_header = bytes([raw[0] & 0x7f, raw[1]])
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# Unset IFAC flag
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new_header = bytes([raw[0] & 0x7f, raw[1]])
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# Re-assemble packet
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new_raw = new_header+raw[2+interface.ifac_size:]
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# Re-assemble packet
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new_raw = new_header+raw[2+interface.ifac_size:]
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# Calculate expected IFAC
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expected_ifac = interface.ifac_identity.sign(new_raw)[-interface.ifac_size:]
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# Calculate expected IFAC
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expected_ifac = interface.ifac_identity.sign(new_raw)[-interface.ifac_size:]
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# Check it
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if ifac == expected_ifac:
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raw = new_raw
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else:
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return
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# Check it
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if ifac == expected_ifac:
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raw = new_raw
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else:
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return
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else:
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# If the IFAC flag is not set, but should be,
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# drop the packet.
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return
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else:
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# If the IFAC flag is not set, but should be,
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# drop the packet.
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return
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else:
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# If the interface does not have IFAC enabled,
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# check the received packet IFAC flag.
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if raw[0] & 0x80 == 0x80:
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# If the flag is set, drop the packet
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return
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# If the interface does not have IFAC enabled,
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# check the received packet IFAC flag.
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if raw[0] & 0x80 == 0x80:
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# If the flag is set, drop the packet
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return
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while (Transport.jobs_running):
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sleep(0.0005)
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