diff options
Diffstat (limited to 'magic/Magdir/msooxml')
| -rw-r--r-- | magic/Magdir/msooxml | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/magic/Magdir/msooxml b/magic/Magdir/msooxml new file mode 100644 index 0000000..c627644 --- /dev/null +++ b/magic/Magdir/msooxml @@ -0,0 +1,35 @@ + +#------------------------------------------------------------------------------ +# $File: msooxml,v 1.2 2013/01/25 23:04:37 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". +# 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 + +# start by checking for ZIP local file header signature +0 string PK\003\004 +# make sure the first file is correct +>0x1E string [Content_Types].xml +# 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 +>>(18.l+49) search/2000 PK\003\004 +# 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/1000 PK\003\004 +# and check the subdirectory name to determine which type of OOXML +# file we have +# Correct the mimetype with the registered ones: +# http://technet.microsoft.com/en-us/library/cc179224.aspx +>>>>&26 string word/ Microsoft Word 2007+ +!:mime application/vnd.openxmlformats-officedocument.wordprocessingml.document +>>>>&26 string ppt/ Microsoft PowerPoint 2007+ +!:mime application/vnd.openxmlformats-officedocument.presentationml.presentation +>>>>&26 string xl/ Microsoft Excel 2007+ +!:mime application/vnd.openxmlformats-officedocument.spreadsheetml.sheet +>>>>&26 default x Microsoft OOXML +!:strength +10 |