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#!/usr/bin/env python3
import argparse
import hashlib
import os
def create_output(args):
in_st = os.stat(args.input_file)
in_size = in_st.st_size
in_f = open(args.input_file, 'r+b')
in_bytes = in_f.read(in_size)
in_f.close()
sha256 = hashlib.sha256()
sha256.update(in_bytes)
out_f = open(args.output_file, 'w+b')
out_f.write(bytes.fromhex(args.pid))
out_f.write(sha256.digest())
out_f.write(in_bytes)
out_f.close()
def main():
global args
parser = argparse.ArgumentParser(description='')
parser.add_argument('--input-file',
dest='input_file',
action='store',
type=str,
help='Input file')
parser.add_argument('--output-file',
dest='output_file',
action='store',
type=str,
help='Output file')
parser.add_argument('--pid',
dest='pid',
action='store',
type=str,
help='Sercomm PID')
args = parser.parse_args()
if ((not args.input_file) or
(not args.output_file) or
(not args.pid)):
parser.print_help()
create_output(args)
main()
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