scripts/sercomm-payload.py

   1 #!/usr/bin/env python3
   2
   3 import argparse
   4 import hashlib
   5 import os
   6
   7 def create_output(args):
   8         in_st = os.stat(args.input_file)
   9         in_size = in_st.st_size
  10
  11         in_f = open(args.input_file, 'r+b')
  12         in_bytes = in_f.read(in_size)
  13         in_f.close()
  14
  15         sha256 = hashlib.sha256()
  16         sha256.update(in_bytes)
  17
  18         out_f = open(args.output_file, 'w+b')
  19         out_f.write(bytes.fromhex(args.pid))
  20         out_f.write(sha256.digest())
  21         out_f.write(in_bytes)
  22         out_f.close()
  23
  24 def main():
  25         global args
  26
  27         parser = argparse.ArgumentParser(description='')
  28
  29         parser.add_argument('--input-file',
  30                 dest='input_file',
  31                 action='store',
  32                 type=str,
  33                 help='Input file')
  34
  35         parser.add_argument('--output-file',
  36                 dest='output_file',
  37                 action='store',
  38                 type=str,
  39                 help='Output file')
  40
  41         parser.add_argument('--pid',
  42                 dest='pid',
  43                 action='store',
  44                 type=str,
  45                 help='Sercomm PID')
  46
  47         args = parser.parse_args()
  48
  49         if ((not args.input_file) or
  50             (not args.output_file) or
  51             (not args.pid)):
  52                 parser.print_help()
  53
  54         create_output(args)
  55
  56 main()