1. import os
  3. def sanitize_binary_file(filepath):
  4. """
  5. Sanitizes a binary file by checking for basic validity and potential issues.
  6. Prints error messages if problems are found.
  7. """
  8. try:
  9. with open(filepath, 'rb') as f:
  10. data = f.read() # Read the entire file content
  11. except FileNotFoundError:
  12. print(f"Error: File not found at {filepath}")
  13. return False # Indicate failure
  15. if not data:
  16. print(f"Error: File {filepath} is empty.")
  17. return False
  19. # Basic size check (optional - adjust as needed)
  20. if len(data) > 1024 * 1024 * 10: #limit to 10MB
  21. print(f"Warning: File {filepath} is large ({len(data) / (1024*1024*10):.2f} MB). Consider reducing size.")
  23. # Check for invalid characters (example: control characters)
  24. for byte in data:
  25. if byte < 0x20 or byte > 0x7f: # Check for printable ASCII characters
  26. print(f"Warning: File {filepath} contains non-printable character: {byte}")
  28. # Check for potential header issues (example: magic number)
  29. magic_number = data[:4]
  30. if magic_number == b'\x4D\x5A\x90\x00': #Example: JPEG magic number
  31. print(f"Warning: File {filepath} may be a JPEG file. Consider appropriate handling.")
  33. return True # Indicate success
  35. if __name__ == '__main__':
  36. # Example usage:
  37. test_file = "test.bin" #Replace with your test file
  39. #Create a dummy file for testing
  40. with open(test_file, "wb") as f:
  41. f.write(b"\x4D\x5A\x90\x00") #jpeg magic number
  42. f.write(b"This is a test")
  44. if sanitize_binary_file(test_file):
  45. print(f"File {test_file} is considered sanitized.")
  46. else:
  47. print(f"File {test_file} requires attention.")

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