magic

package
v1.4.7 Latest Latest
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 Go to latest Published: Nov 11, 2024 License: MIT Imports: 13 Imported by: 0

Documentation

Overview

Package magic holds the matching functions used to find MIME types.

Index

Constants

This section is empty.

Variables

View Source 
var (
	// SevenZ matches a 7z archive.
	SevenZ = prefix([]byte{0x37, 0x7A, 0xBC, 0xAF, 0x27, 0x1C})
	// Gzip matches gzip files based on http://www.zlib.org/rfc-gzip.html#header-trailer.
	Gzip = prefix([]byte{0x1f, 0x8b})
	// Fits matches an Flexible Image Transport System file.
	Fits = prefix([]byte{
		0x53, 0x49, 0x4D, 0x50, 0x4C, 0x45, 0x20, 0x20, 0x3D, 0x20,
		0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
		0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x54,
	})
	// Xar matches an eXtensible ARchive format file.
	Xar = prefix([]byte{0x78, 0x61, 0x72, 0x21})
	// Bz2 matches a bzip2 file.
	Bz2 = prefix([]byte{0x42, 0x5A, 0x68})
	// Ar matches an ar (Unix) archive file.
	Ar = prefix([]byte{0x21, 0x3C, 0x61, 0x72, 0x63, 0x68, 0x3E})
	// Deb matches a Debian package file.
	Deb = offset([]byte{
		0x64, 0x65, 0x62, 0x69, 0x61, 0x6E, 0x2D,
		0x62, 0x69, 0x6E, 0x61, 0x72, 0x79,
	}, 8)
	// Warc matches a Web ARChive file.
	Warc = prefix([]byte("WARC/1.0"), []byte("WARC/1.1"))
	// Cab matches a Microsoft Cabinet archive file.
	Cab = prefix([]byte("MSCF\x00\x00\x00\x00"))
	// Xz matches an xz compressed stream based on https://tukaani.org/xz/xz-file-format.txt.
	Xz = prefix([]byte{0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00})
	// Lzip matches an Lzip compressed file.
	Lzip = prefix([]byte{0x4c, 0x5a, 0x49, 0x50})
	// RPM matches an RPM or Delta RPM package file.
	RPM = prefix([]byte{0xed, 0xab, 0xee, 0xdb}, []byte("drpm"))
	// Cpio matches a cpio archive file.
	Cpio = prefix([]byte("070707"), []byte("070701"), []byte("070702"))
	// RAR matches a RAR archive file.
	RAR = prefix([]byte("Rar!\x1A\x07\x00"), []byte("Rar!\x1A\x07\x01\x00"))
)
View Source 
var (
	// Flac matches a Free Lossless Audio Codec file.
	Flac = prefix([]byte("\x66\x4C\x61\x43\x00\x00\x00\x22"))
	// Midi matches a Musical Instrument Digital Interface file.
	Midi = prefix([]byte("\x4D\x54\x68\x64"))
	// Ape matches a Monkey's Audio file.
	Ape = prefix([]byte("\x4D\x41\x43\x20\x96\x0F\x00\x00\x34\x00\x00\x00\x18\x00\x00\x00\x90\xE3"))
	// MusePack matches a Musepack file.
	MusePack = prefix([]byte("MPCK"))
	// Au matches a Sun Microsystems au file.
	Au = prefix([]byte("\x2E\x73\x6E\x64"))
	// Amr matches an Adaptive Multi-Rate file.
	Amr = prefix([]byte("\x23\x21\x41\x4D\x52"))
	// Voc matches a Creative Voice file.
	Voc = prefix([]byte("Creative Voice File"))
	// M3u matches a Playlist file.
	M3u = prefix([]byte("#EXTM3U"))
	// AAC matches an Advanced Audio Coding file.
	AAC = prefix([]byte{0xFF, 0xF1}, []byte{0xFF, 0xF9})
)
View Source 
var (
	// Lnk matches Microsoft lnk binary format.
	Lnk = prefix([]byte{0x4C, 0x00, 0x00, 0x00, 0x01, 0x14, 0x02, 0x00})
	// Wasm matches a web assembly File Format file.
	Wasm = prefix([]byte{0x00, 0x61, 0x73, 0x6D})
	// Exe matches a Windows/DOS executable file.
	Exe = prefix([]byte{0x4D, 0x5A})
	// Elf matches an Executable and Linkable Format file.
	Elf = prefix([]byte{0x7F, 0x45, 0x4C, 0x46})
	// Nes matches a Nintendo Entertainment system ROM file.
	Nes = prefix([]byte{0x4E, 0x45, 0x53, 0x1A})
	// SWF matches an Adobe Flash swf file.
	SWF = prefix([]byte("CWS"), []byte("FWS"), []byte("ZWS"))
	// Torrent has bencoded text in the beginning.
	Torrent = prefix([]byte("d8:announce"))
	// PAR1 matches a parquet file.
	Par1 = prefix([]byte{0x50, 0x41, 0x52, 0x31})
	// CBOR matches a Concise Binary Object Representation https://cbor.io/
	CBOR = prefix([]byte{0xD9, 0xD9, 0xF7})
)
View Source 
var (
	// Sqlite matches an SQLite database file.
	Sqlite = prefix([]byte{
		0x53, 0x51, 0x4c, 0x69, 0x74, 0x65, 0x20, 0x66,
		0x6f, 0x72, 0x6d, 0x61, 0x74, 0x20, 0x33, 0x00,
	})
	// MsAccessAce matches Microsoft Access dababase file.
	MsAccessAce = offset([]byte("Standard ACE DB"), 4)
	// MsAccessMdb matches legacy Microsoft Access database file (JET, 2003 and earlier).
	MsAccessMdb = offset([]byte("Standard Jet DB"), 4)
)
View Source 
var (
	// Pdf matches a Portable Document Format file.
	// https://github.com/file/file/blob/11010cc805546a3e35597e67e1129a481aed40e8/magic/Magdir/pdf
	Pdf = prefix(

		[]byte("%PDF-"),

		[]byte("\012%PDF-"),

		[]byte("\xef\xbb\xbf%PDF-"),
	)
	// Fdf matches a Forms Data Format file.
	Fdf = prefix([]byte("%FDF"))
	// Mobi matches a Mobi file.
	Mobi = offset([]byte("BOOKMOBI"), 60)
	// Lit matches a Microsoft Lit file.
	Lit = prefix([]byte("ITOLITLS"))
)
View Source 
var (
	// Woff matches a Web Open Font Format file.
	Woff = prefix([]byte("wOFF"))
	// Woff2 matches a Web Open Font Format version 2 file.
	Woff2 = prefix([]byte("wOF2"))
	// Otf matches an OpenType font file.
	Otf = prefix([]byte{0x4F, 0x54, 0x54, 0x4F, 0x00})
)
View Source 
var (
	// AVIF matches an AV1 Image File Format still or animated.
	// Wikipedia page seems outdated listing image/avif-sequence for animations.
	// https://github.com/AOMediaCodec/av1-avif/issues/59
	AVIF = ftyp([]byte("avif"), []byte("avis"))
	// ThreeGP matches a 3GPP file.
	ThreeGP = ftyp(
		[]byte("3gp1"), []byte("3gp2"), []byte("3gp3"), []byte("3gp4"),
		[]byte("3gp5"), []byte("3gp6"), []byte("3gp7"), []byte("3gs7"),
		[]byte("3ge6"), []byte("3ge7"), []byte("3gg6"),
	)
	// ThreeG2 matches a 3GPP2 file.
	ThreeG2 = ftyp(
		[]byte("3g24"), []byte("3g25"), []byte("3g26"), []byte("3g2a"),
		[]byte("3g2b"), []byte("3g2c"), []byte("KDDI"),
	)
	// AMp4 matches an audio MP4 file.
	AMp4 = ftyp(

		[]byte("F4A "), []byte("F4B "),

		[]byte("M4B "), []byte("M4P "),

		[]byte("MSNV"),

		[]byte("NDAS"),
	)
	// Mqv matches a Sony / Mobile QuickTime  file.
	Mqv = ftyp([]byte("mqt "))
	// M4a matches an audio M4A file.
	M4a = ftyp([]byte("M4A "))
	// M4v matches an Appl4 M4V video file.
	M4v = ftyp([]byte("M4V "), []byte("M4VH"), []byte("M4VP"))
	// Heic matches a High Efficiency Image Coding (HEIC) file.
	Heic = ftyp([]byte("heic"), []byte("heix"))
	// HeicSequence matches a High Efficiency Image Coding (HEIC) file sequence.
	HeicSequence = ftyp([]byte("hevc"), []byte("hevx"))
	// Heif matches a High Efficiency Image File Format (HEIF) file.
	Heif = ftyp([]byte("mif1"), []byte("heim"), []byte("heis"), []byte("avic"))
	// HeifSequence matches a High Efficiency Image File Format (HEIF) file sequence.
	HeifSequence = ftyp([]byte("msf1"), []byte("hevm"), []byte("hevs"), []byte("avcs"))
	// Mj2 matches a Motion JPEG 2000 file: https://en.wikipedia.org/wiki/Motion_JPEG_2000.
	Mj2 = ftyp([]byte("mj2s"), []byte("mjp2"), []byte("MFSM"), []byte("MGSV"))
	// Dvb matches a Digital Video Broadcasting file: https://dvb.org.
	// https://cconcolato.github.io/mp4ra/filetype.html
	// https://github.com/file/file/blob/512840337ead1076519332d24fefcaa8fac36e06/magic/Magdir/animation#L135-L154
	Dvb = ftyp(
		[]byte("dby1"), []byte("dsms"), []byte("dts1"), []byte("dts2"),
		[]byte("dts3"), []byte("dxo "), []byte("dmb1"), []byte("dmpf"),
		[]byte("drc1"), []byte("dv1a"), []byte("dv1b"), []byte("dv2a"),
		[]byte("dv2b"), []byte("dv3a"), []byte("dv3b"), []byte("dvr1"),
		[]byte("dvt1"), []byte("emsg"))
)
View Source 
var (
	// Png matches a Portable Network Graphics file.
	// https://www.w3.org/TR/PNG/
	Png = prefix([]byte{0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A})
	// Apng matches an Animated Portable Network Graphics file.
	// https://wiki.mozilla.org/APNG_Specification
	Apng = offset([]byte("acTL"), 37)
	// Jpg matches a Joint Photographic Experts Group file.
	Jpg = prefix([]byte{0xFF, 0xD8, 0xFF})
	// Jp2 matches a JPEG 2000 Image file (ISO 15444-1).
	Jp2 = jpeg2k([]byte{0x6a, 0x70, 0x32, 0x20})
	// Jpx matches a JPEG 2000 Image file (ISO 15444-2).
	Jpx = jpeg2k([]byte{0x6a, 0x70, 0x78, 0x20})
	// Jpm matches a JPEG 2000 Image file (ISO 15444-6).
	Jpm = jpeg2k([]byte{0x6a, 0x70, 0x6D, 0x20})
	// Gif matches a Graphics Interchange Format file.
	Gif = prefix([]byte("GIF87a"), []byte("GIF89a"))
	// Bmp matches a bitmap image file.
	Bmp = prefix([]byte{0x42, 0x4D})
	// Ps matches a PostScript file.
	Ps = prefix([]byte("%!PS-Adobe-"))
	// Psd matches a Photoshop Document file.
	Psd = prefix([]byte("8BPS"))
	// Ico matches an ICO file.
	Ico = prefix([]byte{0x00, 0x00, 0x01, 0x00}, []byte{0x00, 0x00, 0x02, 0x00})
	// Icns matches an ICNS (Apple Icon Image format) file.
	Icns = prefix([]byte("icns"))
	// Tiff matches a Tagged Image File Format file.
	Tiff = prefix([]byte{0x49, 0x49, 0x2A, 0x00}, []byte{0x4D, 0x4D, 0x00, 0x2A})
	// Bpg matches a Better Portable Graphics file.
	Bpg = prefix([]byte{0x42, 0x50, 0x47, 0xFB})
	// Xcf matches GIMP image data.
	Xcf = prefix([]byte("gimp xcf"))
	// Pat matches GIMP pattern data.
	Pat = offset([]byte("GPAT"), 20)
	// Gbr matches GIMP brush data.
	Gbr = offset([]byte("GIMP"), 20)
	// Hdr matches Radiance HDR image.
	// https://web.archive.org/web/20060913152809/http://local.wasp.uwa.edu.au/~pbourke/dataformats/pic/
	Hdr = prefix([]byte("#?RADIANCE\n"))
	// Xpm matches X PixMap image data.
	Xpm = prefix([]byte{0x2F, 0x2A, 0x20, 0x58, 0x50, 0x4D, 0x20, 0x2A, 0x2F})
	// Jxs matches a JPEG XS coded image file (ISO/IEC 21122-3).
	Jxs = prefix([]byte{0x00, 0x00, 0x00, 0x0C, 0x4A, 0x58, 0x53, 0x20, 0x0D, 0x0A, 0x87, 0x0A})
	// Jxr matches Microsoft HD JXR photo file.
	Jxr = prefix([]byte{0x49, 0x49, 0xBC, 0x01})
)
View Source 
var (
	// HTML matches a Hypertext Markup Language file.
	HTML = markup(
		[]byte("<!DOCTYPE HTML"),
		[]byte("<HTML"),
		[]byte("<HEAD"),
		[]byte("<SCRIPT"),
		[]byte("<IFRAME"),
		[]byte("<H1"),
		[]byte("<DIV"),
		[]byte("<FONT"),
		[]byte("<TABLE"),
		[]byte("<A"),
		[]byte("<STYLE"),
		[]byte("<TITLE"),
		[]byte("<B"),
		[]byte("<BODY"),
		[]byte("<BR"),
		[]byte("<P"),
	)
	// XML matches an Extensible Markup Language file.
	XML = markup([]byte("<?XML"))
	// Owl2 matches an Owl ontology file.
	Owl2 = xml(newXMLSig("Ontology", `xmlns="http://www.w3.org/2002/07/owl#"`))
	// Rss matches a Rich Site Summary file.
	Rss = xml(newXMLSig("rss", ""))
	// Atom matches an Atom Syndication Format file.
	Atom = xml(newXMLSig("feed", `xmlns="http://www.w3.org/2005/Atom"`))
	// Kml matches a Keyhole Markup Language file.
	Kml = xml(
		newXMLSig("kml", `xmlns="http://www.opengis.net/kml/2.2"`),
		newXMLSig("kml", `xmlns="http://earth.google.com/kml/2.0"`),
		newXMLSig("kml", `xmlns="http://earth.google.com/kml/2.1"`),
		newXMLSig("kml", `xmlns="http://earth.google.com/kml/2.2"`),
	)
	// Xliff matches a XML Localization Interchange File Format file.
	Xliff = xml(newXMLSig("xliff", `xmlns="urn:oasis:names:tc:xliff:document:1.2"`))
	// Collada matches a COLLAborative Design Activity file.
	Collada = xml(newXMLSig("COLLADA", `xmlns="http://www.collada.org/2005/11/COLLADASchema"`))
	// Gml matches a Geography Markup Language file.
	Gml = xml(
		newXMLSig("", `xmlns:gml="http://www.opengis.net/gml"`),
		newXMLSig("", `xmlns:gml="http://www.opengis.net/gml/3.2"`),
		newXMLSig("", `xmlns:gml="http://www.opengis.net/gml/3.3/exr"`),
	)
	// Gpx matches a GPS Exchange Format file.
	Gpx = xml(newXMLSig("gpx", `xmlns="http://www.topografix.com/GPX/1/1"`))
	// Tcx matches a Training Center XML file.
	Tcx = xml(newXMLSig("TrainingCenterDatabase", `xmlns="http://www.garmin.com/xmlschemas/TrainingCenterDatabase/v2"`))
	// X3d matches an Extensible 3D Graphics file.
	X3d = xml(newXMLSig("X3D", `xmlns:xsd="http://www.w3.org/2001/XMLSchema-instance"`))
	// Amf matches an Additive Manufacturing XML file.
	Amf = xml(newXMLSig("amf", ""))
	// Threemf matches a 3D Manufacturing Format file.
	Threemf = xml(newXMLSig("model", `xmlns="http://schemas.microsoft.com/3dmanufacturing/core/2015/02"`))
	// Xfdf matches a XML Forms Data Format file.
	Xfdf = xml(newXMLSig("xfdf", `xmlns="http://ns.adobe.com/xfdf/"`))
	// VCard matches a Virtual Contact File.
	VCard = ciPrefix([]byte("BEGIN:VCARD\n"), []byte("BEGIN:VCARD\r\n"))
	// ICalendar matches a iCalendar file.
	ICalendar = ciPrefix([]byte("BEGIN:VCALENDAR\n"), []byte("BEGIN:VCALENDAR\r\n"))

	// Js matches a Javascript file.
	Js = shebang(
		[]byte("/bin/node"),
		[]byte("/usr/bin/node"),
		[]byte("/bin/nodejs"),
		[]byte("/usr/bin/nodejs"),
		[]byte("/usr/bin/env node"),
		[]byte("/usr/bin/env nodejs"),
	)
	// Lua matches a Lua programming language file.
	Lua = shebang(
		[]byte("/usr/bin/lua"),
		[]byte("/usr/local/bin/lua"),
		[]byte("/usr/bin/env lua"),
	)
	// Perl matches a Perl programming language file.
	Perl = shebang(
		[]byte("/usr/bin/perl"),
		[]byte("/usr/bin/env perl"),
	)
	// Python matches a Python programming language file.
	Python = shebang(
		[]byte("/usr/bin/python"),
		[]byte("/usr/local/bin/python"),
		[]byte("/usr/bin/env python"),
	)
	// Tcl matches a Tcl programming language file.
	Tcl = shebang(
		[]byte("/usr/bin/tcl"),
		[]byte("/usr/local/bin/tcl"),
		[]byte("/usr/bin/env tcl"),
		[]byte("/usr/bin/tclsh"),
		[]byte("/usr/local/bin/tclsh"),
		[]byte("/usr/bin/env tclsh"),
		[]byte("/usr/bin/wish"),
		[]byte("/usr/local/bin/wish"),
		[]byte("/usr/bin/env wish"),
	)
	// Rtf matches a Rich Text Format file.
	Rtf = prefix([]byte("{\\rtf"))
)
View Source 
var (
	// Flv matches a Flash video file.
	Flv = prefix([]byte("\x46\x4C\x56\x01"))
	// Asf matches an Advanced Systems Format file.
	Asf = prefix([]byte{
		0x30, 0x26, 0xB2, 0x75, 0x8E, 0x66, 0xCF, 0x11,
		0xA6, 0xD9, 0x00, 0xAA, 0x00, 0x62, 0xCE, 0x6C,
	})
	// Rmvb matches a RealMedia Variable Bitrate file.
	Rmvb = prefix([]byte{0x2E, 0x52, 0x4D, 0x46})
)
View Source 
var (
	// Odt matches an OpenDocument Text file.
	Odt = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.text"), 30)
	// Ott matches an OpenDocument Text Template file.
	Ott = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.text-template"), 30)
	// Ods matches an OpenDocument Spreadsheet file.
	Ods = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.spreadsheet"), 30)
	// Ots matches an OpenDocument Spreadsheet Template file.
	Ots = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.spreadsheet-template"), 30)
	// Odp matches an OpenDocument Presentation file.
	Odp = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.presentation"), 30)
	// Otp matches an OpenDocument Presentation Template file.
	Otp = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.presentation-template"), 30)
	// Odg matches an OpenDocument Drawing file.
	Odg = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.graphics"), 30)
	// Otg matches an OpenDocument Drawing Template file.
	Otg = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.graphics-template"), 30)
	// Odf matches an OpenDocument Formula file.
	Odf = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.formula"), 30)
	// Odc matches an OpenDocument Chart file.
	Odc = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.chart"), 30)
	// Epub matches an EPUB file.
	Epub = offset([]byte("mimetypeapplication/epub+zip"), 30)
	// Sxc matches an OpenOffice Spreadsheet file.
	Sxc = offset([]byte("mimetypeapplication/vnd.sun.xml.calc"), 30)
)
View Source 
var Glb = prefix([]byte("\x67\x6C\x54\x46\x02\x00\x00\x00"),
	[]byte("\x67\x6C\x54\x46\x01\x00\x00\x00"))

Glb matches a glTF model format file. GLB is the binary file format representation of 3D models saved in the GL transmission Format (glTF). GLB uses little endian and its header structure is as follows: 

<-- 12-byte header                             -->
| magic            | version          | length   |
| (uint32)         | (uint32)         | (uint32) |
| \x67\x6C\x54\x46 | \x01\x00\x00\x00 | ...      |
| g   l   T   F    | 1                | ...      |

Visit glTF specification and IANA glTF entry for more details.

Functions

func Aaf 

func Aaf(raw []byte, limit uint32) bool

Aaf matches an Advanced Authoring Format file. See: https://pyaaf.readthedocs.io/en/latest/about.html See: https://en.wikipedia.org/wiki/Advanced_Authoring_Format

func Aiff 

func Aiff(raw []byte, limit uint32) bool

Aiff matches Audio Interchange File Format file.

func Avi 

func Avi(raw []byte, limit uint32) bool

Avi matches an Audio Video Interleaved file.

func CRX added in v1.4.1 

func CRX(raw []byte, limit uint32) bool

CRX matches a Chrome extension file: a zip archive prepended by a package header.

func Class 

func Class(raw []byte, limit uint32) bool

Class matches a java class file.

func Csv 

func Csv(raw []byte, limit uint32) bool

Csv matches a comma-separated values file.

func Dbf 

func Dbf(raw []byte, limit uint32) bool

Dbf matches a dBase file. https://www.dbase.com/Knowledgebase/INT/db7_file_fmt.htm

func Dcm 

func Dcm(raw []byte, limit uint32) bool

Dcm matches a DICOM medical format file.

func DjVu 

func DjVu(raw []byte, limit uint32) bool

DjVu matches a DjVu file.

func Doc 

func Doc(raw []byte, _ uint32) bool

Doc matches a Microsoft Word 97-2003 file. See: https://github.com/decalage2/oletools/blob/412ee36ae45e70f42123e835871bac956d958461/oletools/common/clsid.py

func Docx 

func Docx(raw []byte, limit uint32) bool

Docx matches a Microsoft Word 2007 file.

func Dwg 

func Dwg(raw []byte, _ uint32) bool

Dwg matches a CAD drawing file.

func ElfDump 

func ElfDump(raw []byte, limit uint32) bool

ElfDump matches a core dump file.

func ElfExe 

func ElfExe(raw []byte, limit uint32) bool

ElfExe matches an executable file.

func ElfLib 

func ElfLib(raw []byte, limit uint32) bool

ElfLib matches a shared library file.

func ElfObj 

func ElfObj(raw []byte, limit uint32) bool

ElfObj matches an object file.

func Eot 

func Eot(raw []byte, limit uint32) bool

Eot matches an Embedded OpenType font file.

func GeoJSON added in v1.4.0 

func GeoJSON(raw []byte, limit uint32) bool

GeoJSON matches a RFC 7946 GeoJSON file.

GeoJSON detection implies searching for key:value pairs like: `"type": "Feature"` in the input. BUG(gabriel-vasile): The "type" key should be searched for in the root object.

func HAR added in v1.4.0 

func HAR(raw []byte, limit uint32) bool

HAR matches a HAR Spec file. Spec: http://www.softwareishard.com/blog/har-12-spec/

func InstallShieldCab added in v1.4.1 

func InstallShieldCab(raw []byte, _ uint32) bool

InstallShieldCab matches an InstallShield Cabinet archive file.

func JSON added in v1.4.0 

func JSON(raw []byte, limit uint32) bool

JSON matches a JavaScript Object Notation file.

func Jar 

func Jar(raw []byte, limit uint32) bool

Jar matches a Java archive file.

func Jxl added in v1.4.0 

func Jxl(raw []byte, _ uint32) bool

Jxl matches JPEG XL image file.

func MachO 

func MachO(raw []byte, limit uint32) bool

MachO matches Mach-O binaries format.

func Marc 

func Marc(raw []byte, limit uint32) bool

Marc matches a MARC21 (MAchine-Readable Cataloging) file.

func Mkv 

func Mkv(raw []byte, limit uint32) bool

Mkv matches a mkv file.

func Mp3 

func Mp3(raw []byte, limit uint32) bool

Mp3 matches an mp3 file.

func Mp4 

func Mp4(raw []byte, _ uint32) bool

Mp4 detects an .mp4 file. Mp4 detections only does a basic ftyp check. Mp4 has many registered and unregistered code points so it's hard to keep track of all. Detection will default on video/mp4 for all ftyp files. ISO_IEC_14496-12 is the specification for the iso container.

func Mpeg 

func Mpeg(raw []byte, limit uint32) bool

Mpeg matches a Moving Picture Experts Group file.

func Msg 

func Msg(raw []byte, limit uint32) bool

Msg matches a Microsoft Outlook email file.

func Msi added in v1.4.0 

func Msi(raw []byte, limit uint32) bool

Msi matches a Microsoft Windows Installer file. http://fileformats.archiveteam.org/wiki/Microsoft_Compound_File

func NdJSON added in v1.4.0 

func NdJSON(raw []byte, limit uint32) bool

NdJSON matches a Newline delimited JSON file. All complete lines from raw must be valid JSON documents meaning they contain one of the valid JSON data types.

func Ogg 

func Ogg(raw []byte, limit uint32) bool

Ogg matches an Ogg file.

func OggAudio 

func OggAudio(raw []byte, limit uint32) bool

OggAudio matches an audio ogg file.

func OggVideo 

func OggVideo(raw []byte, limit uint32) bool

OggVideo matches a video ogg file.

func Ole 

func Ole(raw []byte, limit uint32) bool

Ole matches an Open Linking and Embedding file.

https://en.wikipedia.org/wiki/Object_Linking_and_Embedding

func P7s 

func P7s(raw []byte, limit uint32) bool

P7s matches an .p7s signature File (PEM, Base64).

func Php 

func Php(raw []byte, limit uint32) bool

Php matches a PHP: Hypertext Preprocessor file.

func Ppt 

func Ppt(raw []byte, limit uint32) bool

Ppt matches a Microsoft PowerPoint 97-2003 file or a PowerPoint 95 presentation.

func Pptx 

func Pptx(raw []byte, limit uint32) bool

Pptx matches a Microsoft PowerPoint 2007 file.

func Pub 

func Pub(raw []byte, limit uint32) bool

Pub matches a Microsoft Publisher file.

func Qcp 

func Qcp(raw []byte, limit uint32) bool

Qcp matches a Qualcomm Pure Voice file.

func QuickTime 

func QuickTime(raw []byte, _ uint32) bool

QuickTime matches a QuickTime File Format file. https://www.loc.gov/preservation/digital/formats/fdd/fdd000052.shtml https://developer.apple.com/library/archive/documentation/QuickTime/QTFF/QTFFChap1/qtff1.html#//apple_ref/doc/uid/TP40000939-CH203-38190 https://github.com/apache/tika/blob/0f5570691133c75ac4472c3340354a6c4080b104/tika-core/src/main/resources/org/apache/tika/mime/tika-mimetypes.xml#L7758-L7777

func Shp 

func Shp(raw []byte, limit uint32) bool

Shp matches a shape format file. https://www.esri.com/library/whitepapers/pdfs/shapefile.pdf

func Shx 

func Shx(raw []byte, limit uint32) bool

Shx matches a shape index format file. https://www.esri.com/library/whitepapers/pdfs/shapefile.pdf

func Srt added in v1.4.1 

func Srt(raw []byte, _ uint32) bool

Srt matches a SubRip file.

func Svg 

func Svg(raw []byte, limit uint32) bool

Svg matches a SVG file.

func Tar 

func Tar(raw []byte, _ uint32) bool

Tar matches a (t)ape (ar)chive file. Tar files are divided into 512 bytes records. First record contains a 257 bytes header padded with NUL.

func Text 

func Text(raw []byte, limit uint32) bool

Text matches a plain text file.

TODO: This function does not parse BOM-less UTF16 and UTF32 files. Not really sure it should. Linux file utility also requires a BOM for UTF16 and UTF32.

func Tsv 

func Tsv(raw []byte, limit uint32) bool

Tsv matches a tab-separated values file.

func Ttc added in v1.4.1 

func Ttc(raw []byte, limit uint32) bool

Ttc matches a TrueType Collection font file.

func Ttf 

func Ttf(raw []byte, limit uint32) bool

Ttf matches a TrueType font file.

func TzIf 

func TzIf(raw []byte, limit uint32) bool

TzIf matches a Time Zone Information Format (TZif) file. See more: https://tools.ietf.org/id/draft-murchison-tzdist-tzif-00.html#rfc.section.3 Its header structure is shown below: 

+---------------+---+
|  magic    (4) | <-+-- version (1)
+---------------+---+---------------------------------------+
|           [unused - reserved for future use] (15)         |
+---------------+---------------+---------------+-----------+
|  isutccnt (4) |  isstdcnt (4) |  leapcnt  (4) |
+---------------+---------------+---------------+
|  timecnt  (4) |  typecnt  (4) |  charcnt  (4) |

func Vtt added in v1.4.1 

func Vtt(raw []byte, limit uint32) bool

Vtt matches a Web Video Text Tracks (WebVTT) file. See https://www.iana.org/assignments/media-types/text/vtt.

func Wav 

func Wav(raw []byte, limit uint32) bool

Wav matches a Waveform Audio File Format file.

func WebM 

func WebM(raw []byte, limit uint32) bool

WebM matches a WebM file.

func Webp 

func Webp(raw []byte, _ uint32) bool

Webp matches a WebP file.

func Xls 

func Xls(raw []byte, limit uint32) bool

Xls matches a Microsoft Excel 97-2003 file.

func Xlsx 

func Xlsx(raw []byte, limit uint32) bool

Xlsx matches a Microsoft Excel 2007 file.

func Zip 

func Zip(raw []byte, limit uint32) bool

Zip matches a zip archive.

func Zstd 

func Zstd(raw []byte, limit uint32) bool

Zstd matches a Zstandard archive file.

Types

type Detector 

type Detector func(raw []byte, limit uint32) bool

Detector receiveѕ the raw data of a file and returns whether the data meets any conditions. The limit parameter is an upper limit to the number of bytes received and is used to tell if the byte slice represents the whole file or is just the header of a file: len(raw) < limit or len(raw)>limit.

Notes

Bugs

  • The "type" key should be searched for in the root object.

Source Files

View all Source files

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