diff options
Diffstat (limited to 'magic/Magdir/compress')
| -rw-r--r-- | magic/Magdir/compress | 87 |
1 files changed, 77 insertions, 10 deletions
diff --git a/magic/Magdir/compress b/magic/Magdir/compress index 107d317c1537..7520eb4ab0f1 100644 --- a/magic/Magdir/compress +++ b/magic/Magdir/compress @@ -1,5 +1,5 @@ #------------------------------------------------------------------------------ -# $File: compress,v 1.72 2018/03/27 23:26:41 christos Exp $ +# $File: compress,v 1.75 2019/04/19 00:42:27 christos Exp $ # compress: file(1) magic for pure-compression formats (no archives) # # compress, gzip, pack, compact, huf, squeeze, crunch, freeze, yabba, etc. @@ -16,13 +16,78 @@ >2 byte&0x1f x %d bits # gzip (GNU zip, not to be confused with Info-ZIP or PKWARE zip archiver) +# URL: https://en.wikipedia.org/wiki/Gzip +# Reference: https://tools.ietf.org/html/rfc1952 +# Update: Joerg Jenderek, Apr 2019 # Edited by Chris Chittleborough <cchittleborough@yahoo.com.au>, March 2002 # * Original filename is only at offset 10 if "extra field" absent # * Produce shorter output - notably, only report compression methods # other than 8 ("deflate", the only method defined in RFC 1952). -0 string \037\213 gzip compressed data -!:mime application/x-gzip -!:strength * 2 +# Note: find defs -iname '*.trid.xml' -exec grep -q '<Bytes>1F8B08' {} \; -ls +# TODO: +# FBR Blueberry FlashBack screen Record https://www.flashbackrecorder.com/ +# KPR KOffice/Calligra KPresenter application/x-kpresenter +# KPT KOffice/Calligra KPresenter template? application/x-kpresenter +# SAV Diggles Saved Game File http://www.innonics.com +# SAV FarCry (demo) saved game http://www.farcry-thegame.com +# DAT ZOAGZIP game data format http://en.wikipedia.org/wiki/SD_Gundam_Capsule_Fighter +0 string \037\213 +# to display gzip compressed (strength=100=2*50) before other (strength=50)? +#!:strength * 2 +# no FNAME and FCOMMENT bit implies no file name/comment. That means only binary +>3 byte&0x18 =0 +# For binary gzipped no ASCII text should occur +# mcd-monu-cad.trid.xml +>>10 string MCD Monu-Cad Drawing, Component or Font +#>>36 string Created\ with\ MONU-CAD +#!:mime application/octet-stream +# http://fileformats.archiveteam.org/wiki/Monu-CAD +# http://www.monucad.com/downloads/FullDemo-2005.EXE +# /HANDS96.MCC Component +# /DEMO_DD01.MCD Drawing +# /MCALF020.FNT Font +!:ext mcc/mcd/fnt +# http://www.generalcadd.com +>>10 string GXD General CADD, Drawing or Component +#!:mime application/octet-stream +# /gxc/BUILDINGEDGE.gxc Component +# /gxd/HOCKETT-STPAUL-WRHSE.gxd Drawing +# /gxd/POWERLAND-MILL-ADD-11.gxd Drawing v9.1.06 +!:ext gxc/gxd +#>>>13 ubyte 0 \b, version 0 +>>>13 string 09 \b, version 9 +# other gzipped binary like gzipped tar, VirtualBox extension package,... +>>10 default x gzip compressed data +>>>0 use gzip-info +# size of the original (uncompressed) input data modulo 2^32 +>>>-4 ulelong x \b, original size modulo 2^32 %u +# gzipped TAR or VirtualBox extension package +!:mime application/gzip +#!:mime application/x-compressed-tar +#!:mime application/x-virtualbox-vbox-extpack +# https://www.w3.org/TR/SVG/mimereg.html +#!:mime image/image/svg+xml-compressed +# zlib.3.gz +# microcode-20180312.tgz +# tpz same as tgz +# lua-md5_1.2-1_i386_i486.ipk https://en.wikipedia.org/wiki/Opkg +# Oracle_VM_VirtualBox_Extension_Pack-5.0.12-104815.vbox-extpack +!:ext gz/tgz/tpz/ipk/vbox-extpack/svgz +# FNAME/FCOMMENT bit implies file name/comment as iso-8859-1 text +>3 byte&0x18 >0 gzip compressed data +!:mime application/gzip +# gzipped tar, gzipped Abiword document +#!:mime application/x-compressed-tar +#!:mime application/x-abiword-compressed +#!:mime image/image/svg+xml-compressed +# kleopatra_splashscreen.svgz gzipped .svg +!:ext gz/tgz/tpz/zabw/svgz +>>0 use gzip-info +# size of the original (uncompressed) input data modulo 2^32 +>>-4 ulelong x \b, original size modulo 2^32 %u +# display information of gzip compressed files +0 name gzip-info +#>2 byte x THIS iS GZIP >2 byte <8 \b, reserved method >2 byte >8 \b, unknown method >3 byte &0x01 \b, ASCII @@ -49,7 +114,9 @@ >9 byte =0x0B \b, from NTFS filesystem (NT) >9 byte =0x0C \b, from QDOS >9 byte =0x0D \b, from Acorn RISCOS ->-4 lelong x \b, original size %d +# size of the original (uncompressed) input data modulo 2^32 +#>-4 ulelong x \b, original size modulo 2^32 %u +#ERROR: line 114: non zero offset 1048572 at level 1 # packed data, Huffman (minimum redundancy) codes on a byte-by-byte basis 0 string \037\036 packed data @@ -160,7 +227,7 @@ >>17 byte =0x0E os: Win32 # 4.3BSD-Quasijarus Strong Compression -# http://minnie.tuhs.org/Quasijarus/compress.html +# https://minnie.tuhs.org/Quasijarus/compress.html 0 string \037\241 Quasijarus strong compressed data # From: Cory Dikkers <cdikkers@swbell.net> @@ -174,7 +241,7 @@ >4 belong 0x090A0C0D best compression # 7-zip archiver, from Thomas Klausner (wiz@danbala.tuwien.ac.at) -# http://www.7-zip.org or DOC/7zFormat.txt +# https://www.7-zip.org or DOC/7zFormat.txt # 0 string 7z\274\257\047\034 7-zip archive data, >6 byte x version %d @@ -203,7 +270,7 @@ >5 byte x \b.%d !:mime application/x-lrzip -# http://fastcompression.blogspot.fi/2013/04/lz4-streaming-format-final.html +# https://fastcompression.blogspot.fi/2013/04/lz4-streaming-format-final.html 0 lelong 0x184d2204 LZ4 compressed data (v1.4+) !:mime application/x-lz4 # Added by osm0sis@xda-developers.com @@ -292,11 +359,11 @@ >0x8 lelong x \b, %u entries # Snappy framing format -# http://code.google.com/p/snappy/source/browse/trunk/framing_format.txt +# https://code.google.com/p/snappy/source/browse/trunk/framing_format.txt 0 string \377\006\0\0sNaPpY snappy framed data !:mime application/x-snappy-framed -# qpress, http://www.quicklz.com/ +# qpress, https://www.quicklz.com/ 0 string qpress10 qpress compressed data !:mime application/x-qpress |