1835f6802SDirk Vogt 2835f6802SDirk Vogt#------------------------------------------------------------------------------ 3*0a6a1f1dSLionel Sambuc# $File: msooxml,v 1.5 2014/08/05 07:38:45 christos Exp $ 4835f6802SDirk Vogt# msooxml: file(1) magic for Microsoft Office XML 5835f6802SDirk Vogt# From: Ralf Brown <ralf.brown@gmail.com> 6835f6802SDirk Vogt 7835f6802SDirk Vogt# .docx, .pptx, and .xlsx are XML plus other files inside a ZIP 8835f6802SDirk Vogt# archive. The first member file is normally "[Content_Types].xml". 9*0a6a1f1dSLionel Sambuc# but some libreoffice generated files put this later. Perhaps skip 10*0a6a1f1dSLionel Sambuc# the "[Content_Types].xml" test? 11835f6802SDirk Vogt# Since MSOOXML doesn't have anything like the uncompressed "mimetype" 12835f6802SDirk Vogt# file of ePub or OpenDocument, we'll have to scan for a filename 13835f6802SDirk Vogt# which can distinguish between the three types 14835f6802SDirk Vogt 15835f6802SDirk Vogt# start by checking for ZIP local file header signature 16835f6802SDirk Vogt0 string PK\003\004 17*0a6a1f1dSLionel Sambuc!:strength +10 18835f6802SDirk Vogt# make sure the first file is correct 19*0a6a1f1dSLionel Sambuc>0x1E regex \\[Content_Types\\]\\.xml|_rels/\\.rels 20835f6802SDirk Vogt# skip to the second local file header 21835f6802SDirk Vogt# since some documents include a 520-byte extra field following the file 22835f6802SDirk Vogt# header, we need to scan for the next header 23835f6802SDirk Vogt>>(18.l+49) search/2000 PK\003\004 24835f6802SDirk Vogt# now skip to the *third* local file header; again, we need to scan due to a 25835f6802SDirk Vogt# 520-byte extra field following the file header 26835f6802SDirk Vogt>>>&26 search/1000 PK\003\004 27835f6802SDirk Vogt# and check the subdirectory name to determine which type of OOXML 28*0a6a1f1dSLionel Sambuc# file we have. Correct the mimetype with the registered ones: 2984d9c625SLionel Sambuc# http://technet.microsoft.com/en-us/library/cc179224.aspx 30835f6802SDirk Vogt>>>>&26 string word/ Microsoft Word 2007+ 3184d9c625SLionel Sambuc!:mime application/vnd.openxmlformats-officedocument.wordprocessingml.document 32835f6802SDirk Vogt>>>>&26 string ppt/ Microsoft PowerPoint 2007+ 3384d9c625SLionel Sambuc!:mime application/vnd.openxmlformats-officedocument.presentationml.presentation 34835f6802SDirk Vogt>>>>&26 string xl/ Microsoft Excel 2007+ 3584d9c625SLionel Sambuc!:mime application/vnd.openxmlformats-officedocument.spreadsheetml.sheet 36835f6802SDirk Vogt>>>>&26 default x Microsoft OOXML 37