Release 16.1.0

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Date of Release: 30 August 2024

General Remarks

This release contains numerous performance improvements and enhancements across the Glasswall Embedded Engine SDK projects.

Note: Embedded Engine releases now follow the MAJOR.MINOR.PATCH versioning system.

Component / Services Released

  • Glasswall Embedded Engine (Glasswall_core2): 2.1092.0
  • SDK Editor Wrappers: 20240904.2
  • Word Search and Redact (libglasswall.word.search): 1.216.0
  • Word Search Wrappers: 0.24
  • Rebuild: 1.867
  • Glasswall Runner: 20240827.1

New Features

  • Tracked changes support in DOCX files via a new content management policy.
    • A tracked_changes content management policy can now be configured to sanitise, disallow or allow tracked changes content within DOCX files.
    • This feature currently sits behind the enable_ooxml_tracked_changes sysConfig feature toggle (disabled by default). See Content Management "sysConfig" Switches.
  • Hidden data support in all OOXML files (DOCX, PPTX and XLSX) via a new content management policy.
    • A hidden_data content management policy can now be configured to sanitise, disallow or allow hidden data content within all OOXML files (DOCX, PPTX and XLSX).
    • This feature currently sits behind the enabled_ooxml_hidden_data sysConfig feature toggle (disabled by default). See Content Management "sysConfig" Switches.
    • When the switch is set to sanitise, any hidden data is made visible. List of hidden data attributes sanitised by file type:
      • Word (DOCX) - attributes vanish and webHidden (used to hide objects, text, tables, etc.)
      • PowerPoint (PPTX) - attribute show (used to hide a slide) and bwMode (which controls how to handle the shape in black and white printer settings)
      • Excel (XLSX) - attributes hidden, width, customWidth, customHeight, ht and hidden (used to hide sheets, columns, rows or cells)
  • New file type enumeration introduced (8, ft_fileTooLarge) for files which fail the 2GiB file size check when using an API to determine the file type i.e. GW2DetermineFileTypeFromFile, GW2DetermineFileTypeFromMemory, and GW2DetermineFileTypeAndReport.

Fixes and Improvements

  • Added a check where all embedded files and images are removed if the file or image is not explicitly referenced in the relationships files in OOXML files.
  • Fixed issue in OOXML files where dangling references to Macros are now removed.
  • Fixed issue where a non-conforming files would return the incorrect error code.
  • Updates to Third Party Licences.md
    • Zlib library upgrade from v1.2.12 to v1.3.
    • Base64 library upgrade from v1.01.00 to v2.rc.08.

Defects and Limitations

  • The Alpine library is currently excluded from the release package and will be reintroduced in a future release.
  • The JavaScript wrapper is currently excluded from the release package and will be reintroduced in a future release.
  • The Word Search Java wrapper compatibility is currently limited to JRE8.
  • PDFs generated via the MS Outlook Adobe plugin are not supported.
  • Word Search analysis XML no longer reports structural content or changes.
  • Processing times may be impacted by changes made to licensing functionality.
  • Processing files using multiple threads is not supported. Spawning multiple processes is advised in order to facilitate parallel processing.
  • Word Search functionality is provided as Beta:
    • 'text' or 'regex' cannot be the same for 'require' or 'allow'/'disallow' as this will regenerate the file and ignore the 'disallow' or 'require' setting
    • | symbol at the start or end of a search term can potentially cause the Engine to hang where using regex search policies