mirror of
https://github.com/RfidResearchGroup/ChameleonMini.git
synced 2026-05-12 11:20:37 -07:00
101 lines
3.1 KiB
Python
101 lines
3.1 KiB
Python
#!/usr/bin/python
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import struct
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import binascii
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def noDecoder(data):
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return ""
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def textDecoder(data):
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return data.decode('ascii')
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def binaryDecoder(data):
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return binascii.hexlify(data).decode()
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eventTypes = {
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0x00: { 'name': 'EMPTY', 'decoder': noDecoder },
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0x10: { 'name': 'GENERIC', 'decoder': textDecoder },
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0x11: { 'name': 'CONFIG SET', 'decoder': textDecoder },
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0x12: { 'name': 'SETTING SET', 'decoder': textDecoder },
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0x13: { 'name': 'UID SET', 'decoder': textDecoder },
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0x20: { 'name': 'RESET APP', 'decoder': noDecoder },
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0x40: { 'name': 'CODEC RX', 'decoder': binaryDecoder },
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0x41: { 'name': 'CODEC TX', 'decoder': binaryDecoder },
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0x80: { 'name': 'APP READ', 'decoder': binaryDecoder },
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0x81: { 'name': 'APP WRITE', 'decoder': binaryDecoder },
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0x84: { 'name': 'APP INC', 'decoder': binaryDecoder },
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0x85: { 'name': 'APP DEC', 'decoder': binaryDecoder },
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0x86: { 'name': 'APP TRANSFER', 'decoder': binaryDecoder },
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0x87: { 'name': 'APP RESTORE', 'decoder': binaryDecoder },
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0x90: { 'name': 'APP AUTH', 'decoder': binaryDecoder },
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0x91: { 'name': 'APP HALT', 'decoder': binaryDecoder },
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0x92: { 'name': 'APP UNKNOWN', 'decoder': binaryDecoder },
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0xA0: { 'name': 'APP AUTHING', 'decoder': binaryDecoder },
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0xA1: { 'name': 'APP AUTHED', 'decoder': binaryDecoder },
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0xC0: { 'name': 'APP AUTH FAILED', 'decoder': binaryDecoder },
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0xC1: { 'name': 'APP CSUM FAILED', 'decoder': binaryDecoder },
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0xC2: { 'name': 'APP NOT AUTHED', 'decoder': binaryDecoder },
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}
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TIMESTAMP_MAX = 65536
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def parseBinary(binaryStream):
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log = []
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# Completely read file contents and process them byte by byte
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# logFile = fileHandle.read()
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# fileIdx = 0
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lastTimestamp = 0
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while True:
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# Read log entry header from file
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header = binaryStream.read(struct.calcsize('<BBH'))
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if (header is None):
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# No more data available
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break
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if (len(header) < struct.calcsize('<BBH')):
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# No more data available
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break
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(event, dataLength, timestamp) = struct.unpack_from('>BBH', header)
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# Break if there are no more events
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if (eventTypes[event]['name'] == 'EMPTY'):
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break
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# Read data from file
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logData = binaryStream.read(dataLength)
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# Decode data
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logData = eventTypes[event]['decoder'](logData)
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# Calculate delta timestamp respecting 16 bit overflow
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deltaTimestamp = timestamp - lastTimestamp;
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lastTimestamp = timestamp
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if (deltaTimestamp < 0):
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deltaTimestamp += TIMESTAMP_MAX;
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# Create log entry as dict and append it to event list
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logEntry = {
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'eventName': eventTypes[event]['name'],
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'dataLength': dataLength,
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'timestamp': timestamp,
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'deltaTimestamp': deltaTimestamp,
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'data': logData
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}
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log.append(logEntry)
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return log
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