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25 行
511 B
25 行
511 B
def getSrcMacFromPkt(packet):
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if len(packet) < 16:
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return None
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return packet[10:16]
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def getDstMacFromPkt(packet):
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if len(packet) < 10:
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return None
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return packet[4:10]
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def binToHexStr(binmac):
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return "".join(["%02x" % ord(i) for i in binmac])
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# checks if packet is a broadcast packet
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def isBroadcast(packet):
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binmac = getDstMacFromPkt(packet)
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# normal broadcast
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if binmac == '\xff\xff\xff\xff\xff\xff':
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return True
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# v6 multicast
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if binmac.startswith('\x33\x33'):
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return True
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return False
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