38 lines
1.1 KiB
Python
Executable File
38 lines
1.1 KiB
Python
Executable File
#! /usr/bin/env python3
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import sys, time
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def prepare_message(bin_message):
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length = 32
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while length > 0 and bin_message[length-1] == 0:
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length -= 1
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bin_message = bin_message[0:length]
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for byte in bin_message:
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if byte < 32:
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return "<some binary blob>"
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try:
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return bin_message.decode()
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except UnicodeDecodeError:
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return "<some binary blob>"
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def main():
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try:
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with open("blockchain", "rb") as f:
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while True:
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block = f.read(293)
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if len(block) != 293:
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break
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if block[0] == 3:
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# Reveal Transaction, skip the associated data
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f.read(5376)
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timestamp = int.from_bytes(block[245:253], "big")
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time_info = time.strftime("%d.%m.%Y %H:%M:%S", time.localtime(timestamp))
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message = prepare_message(block[149:181])
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print(f"[{time_info}] {message}")
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except FileNotFoundError:
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print("Found no blockchain file", file=sys.stderr)
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exit(1)
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if __name__ == '__main__':
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main()
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