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- #------------------------------------------------------------------------------
- # $File: msooxml,v 1.24 2025/05/29 15:03:04 christos Exp $
- # msooxml: file(1) magic for Microsoft Office XML
- # From: Ralf Brown <ralf.brown@gmail.com>
- # .docx, .pptx, and .xlsx are XML plus other files inside a ZIP
- # archive. The first member file is normally "[Content_Types].xml".
- # but some libreoffice generated files put this later. Perhaps skip
- # the "[Content_Types].xml" test?
- # Since MSOOXML doesn't have anything like the uncompressed "mimetype"
- # file of ePub or OpenDocument, we'll have to scan for a filename
- # which can distinguish between the three types
- 0 name msooxml
- >0 string word/ Microsoft Word 2007+
- !:mime application/vnd.openxmlformats-officedocument.wordprocessingml.document
- !:ext docx
- >0 string ppt/ Microsoft PowerPoint 2007+
- !:mime application/vnd.openxmlformats-officedocument.presentationml.presentation
- !:ext pptx
- >0 string xl/ Microsoft Excel 2007+
- !:mime application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
- !:ext xlsx
- >0 string visio/ Microsoft Visio 2013+
- !:mime application/vnd.ms-visio.drawing.main+xml
- >0 string AppManifest.xaml Microsoft Silverlight Application
- !:mime application/x-silverlight-app
- >0 search/100 .nuspec NuGet package
- !:mime application/vnd.nuget.package
- # start by checking for ZIP local file header signature
- 0 string PK\003\004
- !:strength +10
- # make sure the first file is correct
- >0x1E use msooxml
- >0x1E default x
- >>0x1E regex \\[Content_Types\\]\\.xml|_rels/\\.rels|docProps|customXml|.*\\.md|.*\\.png
- # skip to the second local file header
- # since some documents include a 520-byte extra field following the file
- # header, we need to scan for the next header
- >>>&26 search/10000 PK\003\004
- >>>>&26 use msooxml
- >>>>&26 default x
- # now skip to the *third* local file header; again, we need to scan due to a
- # 520-byte extra field following the file header
- >>>>>&26 search/10000 PK\003\004
- # and check the subdirectory name to determine which type of OOXML
- # file we have. Correct the mimetype with the registered ones:
- # https://technet.microsoft.com/en-us/library/cc179224.aspx
- >>>>>>&26 use msooxml
- >>>>>>&26 default x
- # OpenOffice/Libreoffice orders ZIP entry differently, so check the 4th file
- >>>>>>>&26 search/10000 PK\003\004
- >>>>>>>>&26 use msooxml
- # Some OOXML generators add an extra customXml directory. Check another file.
- >>>>>>>>&26 default x
- >>>>>>>>>&26 search/10000 PK\003\004
- >>>>>>>>>>&26 use msooxml
- >>>>>>>>>>&26 default x
- >>>>>>>>>>>&26 search/10000 PK\003\004
- >>>>>>>>>>>>&26 use msooxml
- >>>>>>>>>>>>&26 default x Microsoft OOXML
- >>>>>>>>>>>&26 default x Microsoft OOXML
- >>>>>>>>>>&26 default x Microsoft OOXML
- >>>>>>>>>&26 default x Microsoft OOXML
- >>>>>>>>&26 default x Microsoft OOXML
- >>>>>>>&26 default x Microsoft OOXML
- >>>>>>&26 default x Microsoft OOXML
- >>0x1E regex \\[trash\\]
- >>>&26 search/10000 PK\003\004
- >>>>&26 search/10000 PK\003\004
- >>>>>&26 use msooxml
- >>>>>&26 default x
- >>>>>>&26 search/10000 PK\003\004
- >>>>>>>&26 use msooxml
- >>>>>>>&26 default x Microsoft OOXML
- >>>>>>&26 default x Microsoft OOXML
- >>>>>&26 default x Microsoft OOXML
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