Metadata Cleanup integration / API

[fpietrosanti]

APAF should provide files metadata cleanup facility to be used by apaf applications, for example File uploader/exchange systems with privacy improvements.

APAF should provide a set of API to cleanup possibly dangerous metadata from files.

The APAF framework should use Tor's project MAT (Metadata Anonymization Toolkit) https://mat.boum.org/ by providing:

• Easy/immediate integration within the build system
• A simple API to scan and cleanup supported files

At 27 May 2012 MAT support the following files to be cleaned up:

    Portable Network Graphics (.png)
    JPEG (.jpg, .jpeg, ...)
    Open Documents (.odt, .odx, .ods, ...)
    Office OpenXml (.docx, .pptx, .xlsx, ...)
    Portable Document Fileformat (.pdf)
    Tape ARchives (.tar, .tar.bz2, .tar.gz, ...)
    Zip (.zip)
    MPEG AUdio (.mp3, .mp2, .mp1, ...)
    Ogg Vorbis (.ogg, ...)
    Free Lossless Audio Codec (.flac)
    Torrent (.torrent)