Exiftool Output Modification (Remove Key Inclusion Requirements)

[phutelmyer]

Describe the change

• Refactored the ScanExiftool class in the Strelka scanner:
  • Removed the keys option as metadata filtering is no longer necessary.
  • Formatted metadata keys for searchability by converting spaces and slashes to underscores and converting to lowercase.
  • Enhanced error handling for subprocess and JSON decoding errors.
  • Converted array metadata values to comma-separated strings for uniformity in reporting.
  • Removing Keys from backend.yml as no longer needed (for now)

Describe testing procedures
Tested pytest locally. Built Strelka with all tests enabled.

Sample output

  "scan": {
    "exiftool": {
      "appversion": 16,
      "author": "Dream",
      "codepage": "Windows Cyrillic",
      "createdate": "2015:06:05 18:19:34",
      "directory": "/dev/shm",
      "elapsed": 0.187043,
      "exiftoolversion": 12.52,
      "fileaccessdate": "2023:08:16 17:25:07+00:00",
      "fileinodechangedate": "2023:08:16 17:25:07+00:00",
      "filemodifydate": "2023:08:16 17:25:07+00:00",
      "filename": "tmp3l7wya13",
      "filepermissions": "-rw-------",
      "filesize": "87 kB",
      "filetype": "XLS",
      "filetypeextension": "xls",
      "headingpairs": "Листы, 4, Макросы Excel 4.0, 1, Именованные диапазоны, 2",
      "hyperlinkschanged": "No",
      "lastmodifiedby": "Dream",
      "linksuptodate": "No",
      "mimetype": "application/vnd.ms-excel",
      "modifydate": "2022:05:18 16:43:45",
      "scalecrop": "No",
      "security": "None",
      "shareddoc": "No",
      "software": "Microsoft Excel",
      "sourcefile": "/dev/shm/tmp3l7wya13",
      "titleofparts": "Sheet, VVBR1, VVBR2, VVBR3, OEOGAJPGJPAG, FHJ64, OI89"
    },

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of and tested my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings