2018-12-27 00:19:46 +01:00
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/**
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* File signatures and extractor functions
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*
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* @author n1474335 [n1474335@gmail.com]
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* @copyright Crown Copyright 2018
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* @license Apache-2.0
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*
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*/
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import Stream from "./Stream";
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/**
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* A categorised table of file types, including signatures to identify them and functions
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* to extract them where possible.
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*/
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export const FILE_SIGNATURES = {
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"Images": [
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{
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name: "Joint Photographic Experts Group image",
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2018-12-27 01:03:41 +01:00
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extension: "jpg,jpeg,jpe,thm,mpo",
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2018-12-27 00:19:46 +01:00
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mime: "image/jpeg",
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description: "",
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signature: {
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0: 0xff,
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1: 0xd8,
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2018-12-27 01:03:41 +01:00
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2: 0xff,
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3: [0xc0, 0xc4, 0xdb, 0xdd, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe7, 0xe8, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xfe]
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2018-12-27 00:19:46 +01:00
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},
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extractor: extractJPEG
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},
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{
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name: "Graphics Interchange Format image",
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extension: "gif",
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mime: "image/gif",
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description: "",
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signature: {
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2018-12-27 01:03:41 +01:00
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0: 0x47, // GIF
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2018-12-27 00:19:46 +01:00
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1: 0x49,
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2018-12-27 01:03:41 +01:00
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2: 0x46,
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3: 0x38, // 8
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4: [0x37, 0x39], // 7|9
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5: 0x61 // a
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2018-12-27 00:19:46 +01:00
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},
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extractor: null
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},
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{
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name: "Portable Network Graphics image",
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extension: "png",
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mime: "image/png",
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description: "",
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signature: {
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0: 0x89,
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2018-12-27 01:03:41 +01:00
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1: 0x50, // PNG
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2018-12-27 00:19:46 +01:00
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2: 0x4e,
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2018-12-27 01:03:41 +01:00
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3: 0x47,
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4: 0x0d,
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5: 0x0a,
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6: 0x1a,
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7: 0x0a
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2018-12-27 00:19:46 +01:00
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},
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2018-12-30 03:21:45 +01:00
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extractor: extractPNG
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2018-12-27 00:19:46 +01:00
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},
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{
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name: "WEBP Image",
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extension: "webp",
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mime: "image/webp",
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description: "",
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signature: {
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8: 0x57,
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9: 0x45,
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10: 0x42,
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11: 0x50
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},
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extractor: null
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},
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2018-12-27 01:03:41 +01:00
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{
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name: "Camera Image File Format",
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extension: "crw",
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mime: "image/x-canon-crw",
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description: "",
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signature: {
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6: 0x48, // HEAPCCDR
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7: 0x45,
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8: 0x41,
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9: 0x50,
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10: 0x43,
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11: 0x43,
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12: 0x44,
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13: 0x52
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},
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extractor: null
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},
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2018-12-27 00:19:46 +01:00
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{ // Place before tiff check
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name: "Canon CR2 raw image",
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extension: "cr2",
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mime: "image/x-canon-cr2",
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description: "",
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signature: [
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{
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0: 0x49,
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1: 0x49,
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2: 0x2a,
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3: 0x0,
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8: 0x43,
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9: 0x52
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},
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{
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0: 0x4d,
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1: 0x4d,
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2: 0x0,
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3: 0x2a,
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8: 0x43,
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9: 0x52
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}
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],
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extractor: null
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},
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{
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name: "Tagged Image File Format image",
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extension: "tif",
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mime: "image/tiff",
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description: "",
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signature: [
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{
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0: 0x49,
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1: 0x49,
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2: 0x2a,
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3: 0x0
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},
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{
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0: 0x4d,
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1: 0x4d,
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2: 0x0,
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3: 0x2a
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}
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],
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extractor: null
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},
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{
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name: "Bitmap image",
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extension: "bmp",
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mime: "image/bmp",
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description: "",
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signature: {
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0: 0x42,
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2018-12-27 01:03:41 +01:00
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1: 0x4d,
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7: 0x0,
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9: 0x0,
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14: [0x0c, 0x28, 0x38, 0x40, 0x6c, 0x7c],
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15: 0x0,
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16: 0x0,
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17: 0x0
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2018-12-27 00:19:46 +01:00
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},
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2018-12-30 03:21:45 +01:00
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extractor: extractBMP
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2018-12-27 00:19:46 +01:00
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},
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{
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name: "JPEG Extended Range image",
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extension: "jxr",
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mime: "image/vnd.ms-photo",
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description: "",
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signature: {
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0: 0x49,
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1: 0x49,
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2: 0xbc
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},
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extractor: null
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},
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{
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name: "Photoshop image",
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extension: "psd",
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mime: "image/vnd.adobe.photoshop",
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description: "",
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signature: {
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0: 0x38,
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1: 0x42,
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2: 0x50,
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2018-12-27 01:03:41 +01:00
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3: 0x53,
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4: 0x0,
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5: 0x1,
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6: 0x0,
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7: 0x0,
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8: 0x0,
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9: 0x0,
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10: 0x0,
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11: 0x0
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2018-12-27 00:19:46 +01:00
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},
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extractor: null
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},
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2018-12-27 01:03:41 +01:00
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{
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name: "Paint Shop Pro image",
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extension: "psp",
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mime: "image/psp",
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description: "",
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signature: [
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{
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0: 0x50, // Paint Shop Pro Im
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1: 0x61,
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2: 0x69,
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3: 0x6e,
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4: 0x74,
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5: 0x20,
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6: 0x53,
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7: 0x68,
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8: 0x6f,
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9: 0x70,
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10: 0x20,
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11: 0x50,
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12: 0x72,
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13: 0x6f,
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14: 0x20,
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15: 0x49,
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16: 0x6d
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},
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{
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0: 0x7e,
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1: 0x42,
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2: 0x4b,
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3: 0x0
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}
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],
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extractor: null
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},
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2018-12-27 00:19:46 +01:00
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{
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name: "Icon image",
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extension: "ico",
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mime: "image/x-icon",
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description: "",
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signature: {
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0: 0x0,
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1: 0x0,
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2: 0x1,
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2018-12-27 01:03:41 +01:00
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3: 0x0,
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4: [0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15],
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5: 0x0,
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6: [0x10, 0x20, 0x30, 0x40, 0x80],
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7: [0x10, 0x20, 0x30, 0x40, 0x80],
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9: 0x00,
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10: [0x0, 0x1]
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2018-12-27 00:19:46 +01:00
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},
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extractor: null
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}
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],
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"Video": [
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{ // Place before webm
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name: "Matroska Multimedia Container",
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extension: "mkv",
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mime: "video/x-matroska",
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description: "",
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signature: {
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31: 0x6d,
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32: 0x61,
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33: 0x74,
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34: 0x72,
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35: 0x6f,
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36: 0x73,
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37: 0x6b,
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38: 0x61
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},
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extractor: null
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},
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{
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name: "WEBM video",
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extension: "webm",
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mime: "video/webm",
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description: "",
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signature: {
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0: 0x1a,
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1: 0x45,
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2: 0xdf,
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3: 0xa3
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},
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extractor: null
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},
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{
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name: "MPEG-4 video",
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extension: "mp4",
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mime: "video/mp4",
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description: "",
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signature: [
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{
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0: 0x0,
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1: 0x0,
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2: 0x0,
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3: [0x18, 0x20],
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4: 0x66,
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5: 0x74,
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6: 0x79,
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7: 0x70
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},
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{
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0: 0x33, // 3gp5
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1: 0x67,
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2: 0x70,
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3: 0x35
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},
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{
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0: 0x0,
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1: 0x0,
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2: 0x0,
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3: 0x1c,
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4: 0x66,
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5: 0x74,
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6: 0x79,
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7: 0x70,
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8: 0x6d,
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9: 0x70,
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10: 0x34,
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11: 0x32,
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16: 0x6d, // mp41mp42isom
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17: 0x70,
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18: 0x34,
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19: 0x31,
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20: 0x6d,
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21: 0x70,
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22: 0x34,
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23: 0x32,
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24: 0x69,
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25: 0x73,
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26: 0x6f,
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27: 0x6d
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}
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],
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extractor: null
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},
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{
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name: "M4V video",
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extension: "m4v",
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mime: "video/x-m4v",
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description: "",
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signature: {
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0: 0x0,
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1: 0x0,
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2: 0x0,
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3: 0x1c,
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4: 0x66,
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5: 0x74,
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6: 0x79,
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7: 0x70,
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8: 0x4d,
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9: 0x34,
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10: 0x56
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},
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extractor: null
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},
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{
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name: "Quicktime video",
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extension: "mov",
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mime: "video/quicktime",
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description: "",
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signature: {
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extractor: null
|
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{
|
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name: "Audio Video Interleave",
|
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|
extension: "avi",
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|
mime: "video/x-msvideo",
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description: "",
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signature: {
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extractor: null
|
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|
|
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{
|
|
|
|
|
name: "Windows Media Video",
|
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|
|
|
extension: "wmv",
|
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|
|
mime: "video/x-ms-wmv",
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description: "",
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signature: {
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0: 0x30,
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2: 0xb2,
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6: 0xcf,
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7: 0x11,
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8: 0xa6,
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9: 0xd9
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extractor: null
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{
|
|
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|
|
name: "MPEG video",
|
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|
|
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extension: "mpg",
|
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|
|
mime: "video/mpeg",
|
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description: "",
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signature: {
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3: 0xba
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extractor: null
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},
|
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|
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{
|
|
|
|
|
name: "Flash Video",
|
|
|
|
|
extension: "flv",
|
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|
|
|
mime: "video/x-flv",
|
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|
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description: "",
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signature: {
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2: 0x56,
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3: 0x1
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},
|
2019-01-03 19:40:22 +01:00
|
|
|
extractor: extractFLV
|
2018-12-27 00:19:46 +01:00
|
|
|
},
|
|
|
|
|
],
|
|
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|
|
"Audio": [
|
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{
|
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|
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name: "Waveform Audio",
|
|
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|
|
extension: "wav",
|
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|
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mime: "audio/x-wav",
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description: "",
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signature: {
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8: 0x57,
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10: 0x56,
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11: 0x45
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},
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extractor: null
|
|
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|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "OGG audio",
|
|
|
|
|
extension: "ogg",
|
|
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|
|
mime: "audio/ogg",
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|
description: "",
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signature: {
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3: 0x53
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extractor: null
|
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},
|
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|
|
|
{
|
|
|
|
|
name: "Musical Instrument Digital Interface audio",
|
|
|
|
|
extension: "midi",
|
|
|
|
|
mime: "audio/midi",
|
|
|
|
|
description: "",
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signature: {
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3: 0x64
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extractor: null
|
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},
|
|
|
|
|
{
|
|
|
|
|
name: "MPEG-3 audio",
|
|
|
|
|
extension: "mp3",
|
|
|
|
|
mime: "audio/mpeg",
|
|
|
|
|
description: "",
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|
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signature: [
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{
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},
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{
|
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0: 0xff,
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1: 0xfb
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}
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],
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extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "MPEG-4 Part 14 audio",
|
|
|
|
|
extension: "m4a",
|
|
|
|
|
mime: "audio/m4a",
|
|
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description: "",
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signature: [
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{
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|
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{
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3: 0x20
|
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}
|
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],
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extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "Free Lossless Audio Codec",
|
|
|
|
|
extension: "flac",
|
|
|
|
|
mime: "audio/x-flac",
|
|
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description: "",
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signature: {
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3: 0x43
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},
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extractor: null
|
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},
|
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|
|
{
|
|
|
|
|
name: "Adaptive Multi-Rate audio codec",
|
|
|
|
|
extension: "amr",
|
|
|
|
|
mime: "audio/amr",
|
|
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|
|
description: "",
|
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|
|
signature: {
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3: 0x4d,
|
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4: 0x52,
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5: 0x0a
|
|
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},
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|
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extractor: null
|
|
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|
|
},
|
|
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|
|
],
|
|
|
|
|
"Documents": [
|
|
|
|
|
{
|
|
|
|
|
name: "Portable Document Format",
|
|
|
|
|
extension: "pdf",
|
|
|
|
|
mime: "application/pdf",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
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|
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|
|
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|
3: 0x46
|
|
|
|
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},
|
|
|
|
|
extractor: extractPDF
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "PostScript",
|
|
|
|
|
extension: "ps",
|
|
|
|
|
mime: "application/postscript",
|
|
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|
|
description: "",
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|
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signature: {
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extractor: null
|
|
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},
|
|
|
|
|
{
|
|
|
|
|
name: "Rich Text Format",
|
|
|
|
|
extension: "rtf",
|
|
|
|
|
mime: "application/rtf",
|
|
|
|
|
description: "",
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|
|
signature: {
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3: 0x74,
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extractor: null
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|
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|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "Microsoft Office documents/OLE2",
|
|
|
|
|
extension: "ole2,doc,xls,dot,ppt,xla,ppa,pps,pot,msi,sdw,db,vsd,msg",
|
|
|
|
|
mime: "application/msword,application/vnd.ms-excel,application/vnd.ms-powerpoint",
|
|
|
|
|
description: "Microsoft Office documents",
|
|
|
|
|
signature: {
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|
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3: 0xe0,
|
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4: 0xa1,
|
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5: 0xb1,
|
|
|
|
|
6: 0x1a,
|
|
|
|
|
7: 0xe1
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
2018-12-27 01:03:41 +01:00
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "Microsoft Office 2007+ documents",
|
|
|
|
|
extension: "docx,xlsx,pptx",
|
|
|
|
|
mime: "application/vnd.openxmlformats-officedocument.wordprocessingml.document,application/vnd.openxmlformats-officedocument.spreadsheetml.sheet,application/vnd.openxmlformats-officedocument.presentationml.presentation",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
38: 0x5f, // _Types].xml
|
|
|
|
|
39: 0x54,
|
|
|
|
|
40: 0x79,
|
|
|
|
|
41: 0x70,
|
|
|
|
|
42: 0x65,
|
|
|
|
|
43: 0x73,
|
|
|
|
|
44: 0x5d,
|
|
|
|
|
45: 0x2e,
|
|
|
|
|
46: 0x78,
|
|
|
|
|
47: 0x6d,
|
|
|
|
|
48: 0x6c
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
2018-12-27 00:19:46 +01:00
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "EPUB e-book",
|
|
|
|
|
extension: "epub",
|
|
|
|
|
mime: "application/epub+zip",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0x50,
|
|
|
|
|
1: 0x4b,
|
|
|
|
|
2: 0x3,
|
|
|
|
|
3: 0x4,
|
|
|
|
|
30: 0x6d, // mimetypeapplication/epub_zip
|
|
|
|
|
31: 0x69,
|
|
|
|
|
32: 0x6d,
|
|
|
|
|
33: 0x65,
|
|
|
|
|
34: 0x74,
|
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|
35: 0x79,
|
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36: 0x70,
|
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37: 0x65,
|
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38: 0x61,
|
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39: 0x70,
|
|
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40: 0x70,
|
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41: 0x6c,
|
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42: 0x69,
|
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43: 0x63,
|
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|
44: 0x61,
|
|
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|
45: 0x74,
|
|
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|
46: 0x69,
|
|
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|
47: 0x6f,
|
|
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|
|
48: 0x6e,
|
|
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|
|
49: 0x2f,
|
|
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|
|
50: 0x65,
|
|
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|
51: 0x70,
|
|
|
|
|
52: 0x75,
|
|
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|
|
53: 0x62,
|
|
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|
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54: 0x2b,
|
|
|
|
|
55: 0x7a,
|
|
|
|
|
56: 0x69,
|
|
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|
|
57: 0x70
|
|
|
|
|
},
|
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|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
],
|
|
|
|
|
"Applications": [
|
|
|
|
|
{
|
|
|
|
|
name: "Windows Portable Executable",
|
|
|
|
|
extension: "exe,dll,drv,vxd,sys,ocx,vbx,com,fon,scr",
|
|
|
|
|
mime: "application/x-msdownload",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0x4d,
|
|
|
|
|
1: 0x5a,
|
|
|
|
|
3: [0x0, 0x1, 0x2],
|
|
|
|
|
5: [0x0, 0x1, 0x2]
|
|
|
|
|
},
|
|
|
|
|
extractor: extractMZPE
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "Executable and Linkable Format file",
|
|
|
|
|
extension: "elf,bin,axf,o,prx,so",
|
|
|
|
|
mime: "application/x-executable",
|
|
|
|
|
description: "Executable and Linkable Format file. No standard file extension.",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0x7f,
|
|
|
|
|
1: 0x45,
|
|
|
|
|
2: 0x4c,
|
|
|
|
|
3: 0x46
|
|
|
|
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},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "Adobe Flash",
|
|
|
|
|
extension: "swf",
|
|
|
|
|
mime: "application/x-shockwave-flash",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
0: [0x43, 0x46],
|
|
|
|
|
1: 0x57,
|
|
|
|
|
2: 0x53
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "Java Class",
|
|
|
|
|
extension: "class",
|
|
|
|
|
mime: "application/java-vm",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0xca,
|
|
|
|
|
1: 0xfe,
|
|
|
|
|
2: 0xba,
|
|
|
|
|
3: 0xbe
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "Dalvik Executable",
|
|
|
|
|
extension: "dex",
|
|
|
|
|
mime: "application/octet-stream",
|
|
|
|
|
description: "Dalvik Executable as used by Android",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0x64,
|
|
|
|
|
1: 0x65,
|
|
|
|
|
2: 0x78,
|
|
|
|
|
3: 0x0a,
|
|
|
|
|
4: 0x30,
|
|
|
|
|
5: 0x33,
|
|
|
|
|
6: 0x35,
|
|
|
|
|
7: 0x0
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "Google Chrome Extension",
|
|
|
|
|
extension: "crx",
|
|
|
|
|
mime: "application/crx",
|
|
|
|
|
description: "Google Chrome extension or packaged app",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0x43,
|
|
|
|
|
1: 0x72,
|
|
|
|
|
2: 0x32,
|
|
|
|
|
3: 0x34
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
],
|
|
|
|
|
"Archives": [
|
|
|
|
|
{
|
|
|
|
|
name: "PKZIP archive",
|
|
|
|
|
extension: "zip",
|
|
|
|
|
mime: "application/zip",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0x50,
|
|
|
|
|
1: 0x4b,
|
|
|
|
|
2: [0x3, 0x5, 0x7],
|
|
|
|
|
3: [0x4, 0x6, 0x8]
|
|
|
|
|
},
|
|
|
|
|
extractor: extractZIP
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "TAR archive",
|
|
|
|
|
extension: "tar",
|
|
|
|
|
mime: "application/x-tar",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
257: 0x75,
|
|
|
|
|
258: 0x73,
|
|
|
|
|
259: 0x74,
|
|
|
|
|
260: 0x61,
|
|
|
|
|
261: 0x72
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "Roshal Archive",
|
|
|
|
|
extension: "rar",
|
|
|
|
|
mime: "application/x-rar-compressed",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0x52,
|
|
|
|
|
1: 0x61,
|
|
|
|
|
2: 0x72,
|
|
|
|
|
3: 0x21,
|
|
|
|
|
4: 0x1a,
|
|
|
|
|
5: 0x7,
|
|
|
|
|
6: [0x0, 0x1]
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "Gzip",
|
|
|
|
|
extension: "gz",
|
|
|
|
|
mime: "application/gzip",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0x1f,
|
|
|
|
|
1: 0x8b,
|
|
|
|
|
2: 0x8
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "Bzip2",
|
|
|
|
|
extension: "bz2",
|
|
|
|
|
mime: "application/x-bzip2",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0x42,
|
|
|
|
|
1: 0x5a,
|
|
|
|
|
2: 0x68
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "7zip",
|
|
|
|
|
extension: "7z",
|
|
|
|
|
mime: "application/x-7z-compressed",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0x37,
|
|
|
|
|
1: 0x7a,
|
|
|
|
|
2: 0xbc,
|
|
|
|
|
3: 0xaf,
|
|
|
|
|
4: 0x27,
|
|
|
|
|
5: 0x1c
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "Zlib Deflate",
|
|
|
|
|
extension: "zlib",
|
|
|
|
|
mime: "application/x-deflate",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0x78,
|
|
|
|
|
1: [0x1, 0x9c, 0xda, 0x5e]
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "xz compression",
|
|
|
|
|
extension: "xz",
|
|
|
|
|
mime: "application/x-xz",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0xfd,
|
|
|
|
|
1: 0x37,
|
|
|
|
|
2: 0x7a,
|
|
|
|
|
3: 0x58,
|
|
|
|
|
4: 0x5a,
|
|
|
|
|
5: 0x0
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "Tarball",
|
|
|
|
|
extension: "tar.z",
|
|
|
|
|
mime: "application/x-gtar",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0x1f,
|
|
|
|
|
1: [0x9d, 0xa0]
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "ISO disk image",
|
|
|
|
|
extension: "iso",
|
|
|
|
|
mime: "application/octet-stream",
|
|
|
|
|
description: "ISO 9660 CD/DVD image file",
|
|
|
|
|
signature: [
|
|
|
|
|
{
|
|
|
|
|
0x8001: 0x43,
|
|
|
|
|
0x8002: 0x44,
|
|
|
|
|
0x8003: 0x30,
|
|
|
|
|
0x8004: 0x30,
|
|
|
|
|
0x8005: 0x31
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
0x8801: 0x43,
|
|
|
|
|
0x8802: 0x44,
|
|
|
|
|
0x8803: 0x30,
|
|
|
|
|
0x8804: 0x30,
|
|
|
|
|
0x8805: 0x31
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
0x9001: 0x43,
|
|
|
|
|
0x9002: 0x44,
|
|
|
|
|
0x9003: 0x30,
|
|
|
|
|
0x9004: 0x30,
|
|
|
|
|
0x9005: 0x31
|
|
|
|
|
}
|
|
|
|
|
],
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "Virtual Machine Disk",
|
|
|
|
|
extension: "vmdk",
|
|
|
|
|
mime: "application/vmdk,application/x-virtualbox-vmdk",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0x4b,
|
|
|
|
|
1: 0x44,
|
|
|
|
|
2: 0x4d
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
],
|
|
|
|
|
"Miscellaneous": [
|
|
|
|
|
{
|
|
|
|
|
name: "UTF-8 text file",
|
|
|
|
|
extension: "txt",
|
|
|
|
|
mime: "text/plain",
|
|
|
|
|
description: "UTF-8 encoded Unicode byte order mark, commonly but not exclusively seen in text files.",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0xef,
|
|
|
|
|
1: 0xbb,
|
|
|
|
|
2: 0xbf
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{ // Place before UTF-16 LE file
|
|
|
|
|
name: "UTF-32 LE file",
|
|
|
|
|
extension: "utf32le",
|
|
|
|
|
mime: "charset/utf32le",
|
|
|
|
|
description: "Little-endian UTF-32 encoded Unicode byte order mark.",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0xff,
|
|
|
|
|
1: 0xfe,
|
|
|
|
|
2: 0x00,
|
|
|
|
|
3: 0x00
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "UTF-16 LE file",
|
|
|
|
|
extension: "utf16le",
|
|
|
|
|
mime: "charset/utf16le",
|
|
|
|
|
description: "Little-endian UTF-16 encoded Unicode byte order mark.",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0xff,
|
|
|
|
|
1: 0xfe
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "Web Open Font Format",
|
|
|
|
|
extension: "woff",
|
|
|
|
|
mime: "application/font-woff",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0x77,
|
|
|
|
|
1: 0x4f,
|
|
|
|
|
2: 0x46,
|
|
|
|
|
3: 0x46,
|
|
|
|
|
4: 0x0,
|
|
|
|
|
5: 0x1,
|
|
|
|
|
6: 0x0,
|
|
|
|
|
7: 0x0
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "Web Open Font Format 2",
|
|
|
|
|
extension: "woff2",
|
|
|
|
|
mime: "application/font-woff",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0x77,
|
|
|
|
|
1: 0x4f,
|
|
|
|
|
2: 0x46,
|
|
|
|
|
3: 0x32,
|
|
|
|
|
4: 0x0,
|
|
|
|
|
5: 0x1,
|
|
|
|
|
6: 0x0,
|
|
|
|
|
7: 0x0
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "Embedded OpenType font",
|
|
|
|
|
extension: "eot",
|
|
|
|
|
mime: "application/octet-stream",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: [
|
|
|
|
|
{
|
|
|
|
|
8: 0x2,
|
|
|
|
|
9: 0x0,
|
|
|
|
|
10: 0x1,
|
|
|
|
|
34: 0x4c,
|
|
|
|
|
35: 0x50
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
8: 0x1,
|
|
|
|
|
9: 0x0,
|
|
|
|
|
10: 0x0,
|
|
|
|
|
34: 0x4c,
|
|
|
|
|
35: 0x50
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
8: 0x2,
|
|
|
|
|
9: 0x0,
|
|
|
|
|
10: 0x2,
|
|
|
|
|
34: 0x4c,
|
|
|
|
|
35: 0x50
|
|
|
|
|
},
|
|
|
|
|
],
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "TrueType Font",
|
|
|
|
|
extension: "ttf",
|
|
|
|
|
mime: "application/font-sfnt",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0x0,
|
|
|
|
|
1: 0x1,
|
|
|
|
|
2: 0x0,
|
|
|
|
|
3: 0x0,
|
|
|
|
|
4: 0x0
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "OpenType Font",
|
|
|
|
|
extension: "otf",
|
|
|
|
|
mime: "application/font-sfnt",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0x4f,
|
|
|
|
|
1: 0x54,
|
|
|
|
|
2: 0x54,
|
|
|
|
|
3: 0x4f,
|
|
|
|
|
4: 0x0
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
name: "SQLite",
|
|
|
|
|
extension: "sqlite",
|
|
|
|
|
mime: "application/x-sqlite3",
|
|
|
|
|
description: "",
|
|
|
|
|
signature: {
|
|
|
|
|
0: 0x53,
|
|
|
|
|
1: 0x51,
|
|
|
|
|
2: 0x4c,
|
|
|
|
|
3: 0x69
|
|
|
|
|
},
|
|
|
|
|
extractor: null
|
|
|
|
|
},
|
|
|
|
|
]
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* JPEG extractor.
|
|
|
|
|
*
|
|
|
|
|
* @param {Uint8Array} bytes
|
|
|
|
|
* @param {number} offset
|
|
|
|
|
* @returns {Uint8Array}
|
|
|
|
|
*/
|
|
|
|
|
export function extractJPEG(bytes, offset) {
|
|
|
|
|
const stream = new Stream(bytes.slice(offset));
|
|
|
|
|
|
|
|
|
|
while (stream.hasMore()) {
|
|
|
|
|
const marker = stream.getBytes(2);
|
|
|
|
|
if (marker[0] !== 0xff) throw new Error("Invalid JPEG marker: " + marker);
|
|
|
|
|
|
|
|
|
|
let segmentSize = 0;
|
|
|
|
|
switch (marker[1]) {
|
|
|
|
|
// No length
|
|
|
|
|
case 0xd8: // Start of Image
|
|
|
|
|
case 0x01: // For temporary use in arithmetic coding
|
|
|
|
|
break;
|
|
|
|
|
case 0xd9: // End found
|
|
|
|
|
return stream.carve();
|
|
|
|
|
|
|
|
|
|
// Variable size segment
|
|
|
|
|
case 0xc0: // Start of frame (Baseline DCT)
|
|
|
|
|
case 0xc1: // Start of frame (Extended sequential DCT)
|
|
|
|
|
case 0xc2: // Start of frame (Progressive DCT)
|
|
|
|
|
case 0xc3: // Start of frame (Lossless sequential)
|
|
|
|
|
case 0xc4: // Define Huffman Table
|
|
|
|
|
case 0xc5: // Start of frame (Differential sequential DCT)
|
|
|
|
|
case 0xc6: // Start of frame (Differential progressive DCT)
|
|
|
|
|
case 0xc7: // Start of frame (Differential lossless)
|
|
|
|
|
case 0xc8: // Reserved for JPEG extensions
|
|
|
|
|
case 0xc9: // Start of frame (Extended sequential DCT)
|
|
|
|
|
case 0xca: // Start of frame (Progressive DCT)
|
|
|
|
|
case 0xcb: // Start of frame (Lossless sequential)
|
|
|
|
|
case 0xcc: // Define arithmetic conditioning table
|
|
|
|
|
case 0xcd: // Start of frame (Differential sequential DCT)
|
|
|
|
|
case 0xce: // Start of frame (Differential progressive DCT)
|
|
|
|
|
case 0xcf: // Start of frame (Differential lossless)
|
|
|
|
|
case 0xdb: // Define Quantization Table
|
|
|
|
|
case 0xde: // Define hierarchical progression
|
|
|
|
|
case 0xe0: // Application-specific
|
|
|
|
|
case 0xe1: // Application-specific
|
|
|
|
|
case 0xe2: // Application-specific
|
|
|
|
|
case 0xe3: // Application-specific
|
|
|
|
|
case 0xe4: // Application-specific
|
|
|
|
|
case 0xe5: // Application-specific
|
|
|
|
|
case 0xe6: // Application-specific
|
|
|
|
|
case 0xe7: // Application-specific
|
|
|
|
|
case 0xe8: // Application-specific
|
|
|
|
|
case 0xe9: // Application-specific
|
|
|
|
|
case 0xea: // Application-specific
|
|
|
|
|
case 0xeb: // Application-specific
|
|
|
|
|
case 0xec: // Application-specific
|
|
|
|
|
case 0xed: // Application-specific
|
|
|
|
|
case 0xee: // Application-specific
|
|
|
|
|
case 0xef: // Application-specific
|
|
|
|
|
case 0xfe: // Comment
|
|
|
|
|
segmentSize = stream.readInt(2, "be");
|
|
|
|
|
stream.position += segmentSize - 2;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
// 1 byte
|
|
|
|
|
case 0xdf: // Expand reference image
|
|
|
|
|
stream.position++;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
// 2 bytes
|
|
|
|
|
case 0xdc: // Define number of lines
|
|
|
|
|
case 0xdd: // Define restart interval
|
|
|
|
|
stream.position += 2;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
// Start scan
|
|
|
|
|
case 0xda: // Start of scan
|
|
|
|
|
segmentSize = stream.readInt(2, "be");
|
|
|
|
|
stream.position += segmentSize - 2;
|
|
|
|
|
stream.continueUntil(0xff);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
// Continue through encoded data
|
|
|
|
|
case 0x00: // Byte stuffing
|
|
|
|
|
case 0xd0: // Restart
|
|
|
|
|
case 0xd1: // Restart
|
|
|
|
|
case 0xd2: // Restart
|
|
|
|
|
case 0xd3: // Restart
|
|
|
|
|
case 0xd4: // Restart
|
|
|
|
|
case 0xd5: // Restart
|
|
|
|
|
case 0xd6: // Restart
|
|
|
|
|
case 0xd7: // Restart
|
|
|
|
|
stream.continueUntil(0xff);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
stream.continueUntil(0xff);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
throw new Error("Unable to parse JPEG successfully");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Portable executable extractor.
|
|
|
|
|
* Assumes that the offset refers to an MZ header.
|
|
|
|
|
*
|
|
|
|
|
* @param {Uint8Array} bytes
|
|
|
|
|
* @param {number} offset
|
|
|
|
|
* @returns {Uint8Array}
|
|
|
|
|
*/
|
|
|
|
|
export function extractMZPE(bytes, offset) {
|
|
|
|
|
const stream = new Stream(bytes.slice(offset));
|
|
|
|
|
|
|
|
|
|
// Move to PE header pointer
|
|
|
|
|
stream.moveTo(0x3c);
|
|
|
|
|
const peAddress = stream.readInt(4, "le");
|
|
|
|
|
|
|
|
|
|
// Move to PE header
|
|
|
|
|
stream.moveTo(peAddress);
|
|
|
|
|
|
|
|
|
|
// Get number of sections
|
|
|
|
|
stream.moveForwardsBy(6);
|
|
|
|
|
const numSections = stream.readInt(2, "le");
|
|
|
|
|
|
|
|
|
|
// Get optional header size
|
|
|
|
|
stream.moveForwardsBy(12);
|
|
|
|
|
const optionalHeaderSize = stream.readInt(2, "le");
|
|
|
|
|
|
|
|
|
|
// Move past optional header to section header
|
|
|
|
|
stream.moveForwardsBy(2 + optionalHeaderSize);
|
|
|
|
|
|
|
|
|
|
// Move to final section header
|
|
|
|
|
stream.moveForwardsBy((numSections - 1) * 0x28);
|
|
|
|
|
|
|
|
|
|
// Get raw data info
|
|
|
|
|
stream.moveForwardsBy(16);
|
|
|
|
|
const rawDataSize = stream.readInt(4, "le");
|
|
|
|
|
const rawDataAddress = stream.readInt(4, "le");
|
|
|
|
|
|
|
|
|
|
// Move to end of final section
|
|
|
|
|
stream.moveTo(rawDataAddress + rawDataSize);
|
|
|
|
|
|
|
|
|
|
return stream.carve();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* PDF extractor.
|
|
|
|
|
*
|
|
|
|
|
* @param {Uint8Array} bytes
|
|
|
|
|
* @param {number} offset
|
|
|
|
|
* @returns {Uint8Array}
|
|
|
|
|
*/
|
|
|
|
|
export function extractPDF(bytes, offset) {
|
|
|
|
|
const stream = new Stream(bytes.slice(offset));
|
|
|
|
|
|
|
|
|
|
// Find end-of-file marker (%%EOF)
|
|
|
|
|
stream.continueUntil([0x25, 0x25, 0x45, 0x4f, 0x46]);
|
|
|
|
|
stream.moveForwardsBy(5);
|
|
|
|
|
stream.consumeIf(0x0d);
|
|
|
|
|
stream.consumeIf(0x0a);
|
|
|
|
|
|
|
|
|
|
return stream.carve();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* ZIP extractor.
|
|
|
|
|
*
|
|
|
|
|
* @param {Uint8Array} bytes
|
|
|
|
|
* @param {number} offset
|
|
|
|
|
* @returns {Uint8Array}
|
|
|
|
|
*/
|
|
|
|
|
export function extractZIP(bytes, offset) {
|
|
|
|
|
const stream = new Stream(bytes.slice(offset));
|
|
|
|
|
|
|
|
|
|
// Find End of central directory record
|
|
|
|
|
stream.continueUntil([0x50, 0x4b, 0x05, 0x06]);
|
|
|
|
|
|
|
|
|
|
// Get comment length and consume
|
|
|
|
|
stream.moveForwardsBy(20);
|
|
|
|
|
const commentLength = stream.readInt(2, "le");
|
|
|
|
|
stream.moveForwardsBy(commentLength);
|
|
|
|
|
|
|
|
|
|
return stream.carve();
|
|
|
|
|
}
|
2018-12-30 03:21:45 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* PNG extractor.
|
|
|
|
|
*
|
|
|
|
|
* @param {Uint8Array} bytes
|
|
|
|
|
* @param {number} offset
|
|
|
|
|
* @returns {Uint8Array}
|
|
|
|
|
*/
|
|
|
|
|
export function extractPNG(bytes, offset) {
|
|
|
|
|
const stream = new Stream(bytes.slice(offset));
|
|
|
|
|
|
|
|
|
|
// Move past signature to first chunk
|
|
|
|
|
stream.moveForwardsBy(8);
|
|
|
|
|
|
|
|
|
|
let chunkSize = 0,
|
|
|
|
|
chunkType = "";
|
|
|
|
|
|
|
|
|
|
while (chunkType !== "IEND") {
|
|
|
|
|
chunkSize = stream.readInt(4, "be");
|
|
|
|
|
chunkType = stream.readString(4);
|
|
|
|
|
|
|
|
|
|
// Chunk data size + CRC checksum
|
|
|
|
|
stream.moveForwardsBy(chunkSize + 4);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
return stream.carve();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* BMP extractor.
|
|
|
|
|
*
|
|
|
|
|
* @param {Uint8Array} bytes
|
|
|
|
|
* @param {number} offset
|
|
|
|
|
* @returns {Uint8Array}
|
|
|
|
|
*/
|
|
|
|
|
export function extractBMP(bytes, offset) {
|
|
|
|
|
const stream = new Stream(bytes.slice(offset));
|
|
|
|
|
|
|
|
|
|
// Move past header
|
|
|
|
|
stream.moveForwardsBy(2);
|
|
|
|
|
|
|
|
|
|
// Read full file size
|
|
|
|
|
const bmpSize = stream.readInt(4, "le");
|
|
|
|
|
|
|
|
|
|
// Move to end of file (file size minus header and size field)
|
|
|
|
|
stream.moveForwardsBy(bmpSize - 6);
|
|
|
|
|
|
|
|
|
|
return stream.carve();
|
|
|
|
|
}
|
2019-01-03 19:40:22 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* FLV extractor.
|
|
|
|
|
*
|
|
|
|
|
* @param {Uint8Array} bytes
|
|
|
|
|
* @param {number} offset
|
|
|
|
|
* @returns {Uint8Array}
|
|
|
|
|
*/
|
|
|
|
|
export function extractFLV(bytes, offset) {
|
|
|
|
|
const stream = new Stream(bytes.slice(offset));
|
|
|
|
|
|
|
|
|
|
// Move past signature, version and flags
|
|
|
|
|
stream.moveForwardsBy(5);
|
|
|
|
|
|
|
|
|
|
// Read header size
|
|
|
|
|
const headerSize = stream.readInt(4, "be");
|
|
|
|
|
|
|
|
|
|
// Skip through the rest of the header
|
|
|
|
|
stream.moveForwardsBy(headerSize - 9);
|
|
|
|
|
|
|
|
|
|
let tagSize = -11; // Fake size of previous tag header
|
|
|
|
|
while (stream.position < stream.length) {
|
|
|
|
|
const prevTagSize = stream.readInt(4, "be");
|
|
|
|
|
const tagType = stream.readInt(1, "be");
|
|
|
|
|
|
|
|
|
|
if ([8, 9, 18].indexOf(tagType) < 0) {
|
|
|
|
|
// This tag is not valid
|
|
|
|
|
stream.moveBackwardsBy(1);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (prevTagSize !== tagSize + 11) {
|
|
|
|
|
// Previous tag was not valid
|
|
|
|
|
stream.moveBackwardsBy(tagSize + 11);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
tagSize = stream.readInt(3, "be");
|
|
|
|
|
|
|
|
|
|
// Move past the rest of the tag header and payload
|
|
|
|
|
stream.moveForwardsBy(7 + tagSize);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return stream.carve();
|
|
|
|
|
}
|
