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Configuration error
Configuration error
| ; | |
| module.exports = function (buf) { | |
| if (!(buf && buf.length > 1)) { | |
| return null; | |
| } | |
| if (buf[0] === 0xFF && buf[1] === 0xD8 && buf[2] === 0xFF) { | |
| return { | |
| ext: 'jpg', | |
| mime: 'image/jpeg' | |
| }; | |
| } | |
| if (buf[0] === 0x89 && buf[1] === 0x50 && buf[2] === 0x4E && buf[3] === 0x47) { | |
| return { | |
| ext: 'png', | |
| mime: 'image/png' | |
| }; | |
| } | |
| if (buf[0] === 0x47 && buf[1] === 0x49 && buf[2] === 0x46) { | |
| return { | |
| ext: 'gif', | |
| mime: 'image/gif' | |
| }; | |
| } | |
| if (buf[8] === 0x57 && buf[9] === 0x45 && buf[10] === 0x42 && buf[11] === 0x50) { | |
| return { | |
| ext: 'webp', | |
| mime: 'image/webp' | |
| }; | |
| } | |
| if (buf[0] === 0x46 && buf[1] === 0x4C && buf[2] === 0x49 && buf[3] === 0x46) { | |
| return { | |
| ext: 'flif', | |
| mime: 'image/flif' | |
| }; | |
| } | |
| // needs to be before `tif` check | |
| if (((buf[0] === 0x49 && buf[1] === 0x49 && buf[2] === 0x2A && buf[3] === 0x0) || (buf[0] === 0x4D && buf[1] === 0x4D && buf[2] === 0x0 && buf[3] === 0x2A)) && buf[8] === 0x43 && buf[9] === 0x52) { | |
| return { | |
| ext: 'cr2', | |
| mime: 'image/x-canon-cr2' | |
| }; | |
| } | |
| if ((buf[0] === 0x49 && buf[1] === 0x49 && buf[2] === 0x2A && buf[3] === 0x0) || (buf[0] === 0x4D && buf[1] === 0x4D && buf[2] === 0x0 && buf[3] === 0x2A)) { | |
| return { | |
| ext: 'tif', | |
| mime: 'image/tiff' | |
| }; | |
| } | |
| if (buf[0] === 0x42 && buf[1] === 0x4D) { | |
| return { | |
| ext: 'bmp', | |
| mime: 'image/bmp' | |
| }; | |
| } | |
| if (buf[0] === 0x49 && buf[1] === 0x49 && buf[2] === 0xBC) { | |
| return { | |
| ext: 'jxr', | |
| mime: 'image/vnd.ms-photo' | |
| }; | |
| } | |
| if (buf[0] === 0x38 && buf[1] === 0x42 && buf[2] === 0x50 && buf[3] === 0x53) { | |
| return { | |
| ext: 'psd', | |
| mime: 'image/vnd.adobe.photoshop' | |
| }; | |
| } | |
| // needs to be before `zip` check | |
| if (buf[0] === 0x50 && buf[1] === 0x4B && buf[2] === 0x3 && buf[3] === 0x4 && buf[30] === 0x6D && buf[31] === 0x69 && buf[32] === 0x6D && buf[33] === 0x65 && buf[34] === 0x74 && buf[35] === 0x79 && buf[36] === 0x70 && buf[37] === 0x65 && buf[38] === 0x61 && buf[39] === 0x70 && buf[40] === 0x70 && buf[41] === 0x6C && buf[42] === 0x69 && buf[43] === 0x63 && buf[44] === 0x61 && buf[45] === 0x74 && buf[46] === 0x69 && buf[47] === 0x6F && buf[48] === 0x6E && buf[49] === 0x2F && buf[50] === 0x65 && buf[51] === 0x70 && buf[52] === 0x75 && buf[53] === 0x62 && buf[54] === 0x2B && buf[55] === 0x7A && buf[56] === 0x69 && buf[57] === 0x70) { | |
| return { | |
| ext: 'epub', | |
| mime: 'application/epub+zip' | |
| }; | |
| } | |
| // needs to be before `zip` check | |
| // assumes signed .xpi from addons.mozilla.org | |
| if (buf[0] === 0x50 && buf[1] === 0x4B && buf[2] === 0x3 && buf[3] === 0x4 && buf[30] === 0x4D && buf[31] === 0x45 && buf[32] === 0x54 && buf[33] === 0x41 && buf[34] === 0x2D && buf[35] === 0x49 && buf[36] === 0x4E && buf[37] === 0x46 && buf[38] === 0x2F && buf[39] === 0x6D && buf[40] === 0x6F && buf[41] === 0x7A && buf[42] === 0x69 && buf[43] === 0x6C && buf[44] === 0x6C && buf[45] === 0x61 && buf[46] === 0x2E && buf[47] === 0x72 && buf[48] === 0x73 && buf[49] === 0x61) { | |
| return { | |
| ext: 'xpi', | |
| mime: 'application/x-xpinstall' | |
| }; | |
| } | |
| if (buf[0] === 0x50 && buf[1] === 0x4B && (buf[2] === 0x3 || buf[2] === 0x5 || buf[2] === 0x7) && (buf[3] === 0x4 || buf[3] === 0x6 || buf[3] === 0x8)) { | |
| return { | |
| ext: 'zip', | |
| mime: 'application/zip' | |
| }; | |
| } | |
| if (buf[257] === 0x75 && buf[258] === 0x73 && buf[259] === 0x74 && buf[260] === 0x61 && buf[261] === 0x72) { | |
| return { | |
| ext: 'tar', | |
| mime: 'application/x-tar' | |
| }; | |
| } | |
| if (buf[0] === 0x52 && buf[1] === 0x61 && buf[2] === 0x72 && buf[3] === 0x21 && buf[4] === 0x1A && buf[5] === 0x7 && (buf[6] === 0x0 || buf[6] === 0x1)) { | |
| return { | |
| ext: 'rar', | |
| mime: 'application/x-rar-compressed' | |
| }; | |
| } | |
| if (buf[0] === 0x1F && buf[1] === 0x8B && buf[2] === 0x8) { | |
| return { | |
| ext: 'gz', | |
| mime: 'application/gzip' | |
| }; | |
| } | |
| if (buf[0] === 0x42 && buf[1] === 0x5A && buf[2] === 0x68) { | |
| return { | |
| ext: 'bz2', | |
| mime: 'application/x-bzip2' | |
| }; | |
| } | |
| if (buf[0] === 0x37 && buf[1] === 0x7A && buf[2] === 0xBC && buf[3] === 0xAF && buf[4] === 0x27 && buf[5] === 0x1C) { | |
| return { | |
| ext: '7z', | |
| mime: 'application/x-7z-compressed' | |
| }; | |
| } | |
| if (buf[0] === 0x78 && buf[1] === 0x01) { | |
| return { | |
| ext: 'dmg', | |
| mime: 'application/x-apple-diskimage' | |
| }; | |
| } | |
| if ( | |
| (buf[0] === 0x0 && buf[1] === 0x0 && buf[2] === 0x0 && (buf[3] === 0x18 || buf[3] === 0x20) && buf[4] === 0x66 && buf[5] === 0x74 && buf[6] === 0x79 && buf[7] === 0x70) || | |
| (buf[0] === 0x33 && buf[1] === 0x67 && buf[2] === 0x70 && buf[3] === 0x35) || | |
| (buf[0] === 0x0 && buf[1] === 0x0 && buf[2] === 0x0 && buf[3] === 0x1C && buf[4] === 0x66 && buf[5] === 0x74 && buf[6] === 0x79 && buf[7] === 0x70 && buf[8] === 0x6D && buf[9] === 0x70 && buf[10] === 0x34 && buf[11] === 0x32 && buf[16] === 0x6D && buf[17] === 0x70 && buf[18] === 0x34 && buf[19] === 0x31 && buf[20] === 0x6D && buf[21] === 0x70 && buf[22] === 0x34 && buf[23] === 0x32 && buf[24] === 0x69 && buf[25] === 0x73 && buf[26] === 0x6F && buf[27] === 0x6D) || | |
| (buf[0] === 0x0 && buf[1] === 0x0 && buf[2] === 0x0 && buf[3] === 0x1C && buf[4] === 0x66 && buf[5] === 0x74 && buf[6] === 0x79 && buf[7] === 0x70 && buf[8] === 0x69 && buf[9] === 0x73 && buf[10] === 0x6F && buf[11] === 0x6D) || | |
| (buf[0] === 0x0 && buf[1] === 0x0 && buf[2] === 0x0 && buf[3] === 0x1c && buf[4] === 0x66 && buf[5] === 0x74 && buf[6] === 0x79 && buf[7] === 0x70 && buf[8] === 0x6D && buf[9] === 0x70 && buf[10] === 0x34 && buf[11] === 0x32 && buf[12] === 0x0 && buf[13] === 0x0 && buf[14] === 0x0 && buf[15] === 0x0) | |
| ) { | |
| return { | |
| ext: 'mp4', | |
| mime: 'video/mp4' | |
| }; | |
| } | |
| if ((buf[0] === 0x0 && buf[1] === 0x0 && buf[2] === 0x0 && buf[3] === 0x1C && buf[4] === 0x66 && buf[5] === 0x74 && buf[6] === 0x79 && buf[7] === 0x70 && buf[8] === 0x4D && buf[9] === 0x34 && buf[10] === 0x56)) { | |
| return { | |
| ext: 'm4v', | |
| mime: 'video/x-m4v' | |
| }; | |
| } | |
| if (buf[0] === 0x4D && buf[1] === 0x54 && buf[2] === 0x68 && buf[3] === 0x64) { | |
| return { | |
| ext: 'mid', | |
| mime: 'audio/midi' | |
| }; | |
| } | |
| // needs to be before the `webm` check | |
| if (buf[31] === 0x6D && buf[32] === 0x61 && buf[33] === 0x74 && buf[34] === 0x72 && buf[35] === 0x6f && buf[36] === 0x73 && buf[37] === 0x6B && buf[38] === 0x61) { | |
| return { | |
| ext: 'mkv', | |
| mime: 'video/x-matroska' | |
| }; | |
| } | |
| if (buf[0] === 0x1A && buf[1] === 0x45 && buf[2] === 0xDF && buf[3] === 0xA3) { | |
| return { | |
| ext: 'webm', | |
| mime: 'video/webm' | |
| }; | |
| } | |
| if (buf[0] === 0x0 && buf[1] === 0x0 && buf[2] === 0x0 && buf[3] === 0x14 && buf[4] === 0x66 && buf[5] === 0x74 && buf[6] === 0x79 && buf[7] === 0x70) { | |
| return { | |
| ext: 'mov', | |
| mime: 'video/quicktime' | |
| }; | |
| } | |
| if (buf[0] === 0x52 && buf[1] === 0x49 && buf[2] === 0x46 && buf[3] === 0x46 && buf[8] === 0x41 && buf[9] === 0x56 && buf[10] === 0x49) { | |
| return { | |
| ext: 'avi', | |
| mime: 'video/x-msvideo' | |
| }; | |
| } | |
| if (buf[0] === 0x30 && buf[1] === 0x26 && buf[2] === 0xB2 && buf[3] === 0x75 && buf[4] === 0x8E && buf[5] === 0x66 && buf[6] === 0xCF && buf[7] === 0x11 && buf[8] === 0xA6 && buf[9] === 0xD9) { | |
| return { | |
| ext: 'wmv', | |
| mime: 'video/x-ms-wmv' | |
| }; | |
| } | |
| if (buf[0] === 0x0 && buf[1] === 0x0 && buf[2] === 0x1 && buf[3].toString(16)[0] === 'b') { | |
| return { | |
| ext: 'mpg', | |
| mime: 'video/mpeg' | |
| }; | |
| } | |
| if ((buf[0] === 0x49 && buf[1] === 0x44 && buf[2] === 0x33) || (buf[0] === 0xFF && buf[1] === 0xfb)) { | |
| return { | |
| ext: 'mp3', | |
| mime: 'audio/mpeg' | |
| }; | |
| } | |
| if ((buf[4] === 0x66 && buf[5] === 0x74 && buf[6] === 0x79 && buf[7] === 0x70 && buf[8] === 0x4D && buf[9] === 0x34 && buf[10] === 0x41) || (buf[0] === 0x4D && buf[1] === 0x34 && buf[2] === 0x41 && buf[3] === 0x20)) { | |
| return { | |
| ext: 'm4a', | |
| mime: 'audio/m4a' | |
| }; | |
| } | |
| // needs to be before `ogg` check | |
| if (buf[28] === 0x4F && buf[29] === 0x70 && buf[30] === 0x75 && buf[31] === 0x73 && buf[32] === 0x48 && buf[33] === 0x65 && buf[34] === 0x61 && buf[35] === 0x64) { | |
| return { | |
| ext: 'opus', | |
| mime: 'audio/opus' | |
| }; | |
| } | |
| if (buf[0] === 0x4F && buf[1] === 0x67 && buf[2] === 0x67 && buf[3] === 0x53) { | |
| return { | |
| ext: 'ogg', | |
| mime: 'audio/ogg' | |
| }; | |
| } | |
| if (buf[0] === 0x66 && buf[1] === 0x4C && buf[2] === 0x61 && buf[3] === 0x43) { | |
| return { | |
| ext: 'flac', | |
| mime: 'audio/x-flac' | |
| }; | |
| } | |
| if (buf[0] === 0x52 && buf[1] === 0x49 && buf[2] === 0x46 && buf[3] === 0x46 && buf[8] === 0x57 && buf[9] === 0x41 && buf[10] === 0x56 && buf[11] === 0x45) { | |
| return { | |
| ext: 'wav', | |
| mime: 'audio/x-wav' | |
| }; | |
| } | |
| if (buf[0] === 0x23 && buf[1] === 0x21 && buf[2] === 0x41 && buf[3] === 0x4D && buf[4] === 0x52 && buf[5] === 0x0A) { | |
| return { | |
| ext: 'amr', | |
| mime: 'audio/amr' | |
| }; | |
| } | |
| if (buf[0] === 0x25 && buf[1] === 0x50 && buf[2] === 0x44 && buf[3] === 0x46) { | |
| return { | |
| ext: 'pdf', | |
| mime: 'application/pdf' | |
| }; | |
| } | |
| if (buf[0] === 0x4D && buf[1] === 0x5A) { | |
| return { | |
| ext: 'exe', | |
| mime: 'application/x-msdownload' | |
| }; | |
| } | |
| if ((buf[0] === 0x43 || buf[0] === 0x46) && buf[1] === 0x57 && buf[2] === 0x53) { | |
| return { | |
| ext: 'swf', | |
| mime: 'application/x-shockwave-flash' | |
| }; | |
| } | |
| if (buf[0] === 0x7B && buf[1] === 0x5C && buf[2] === 0x72 && buf[3] === 0x74 && buf[4] === 0x66) { | |
| return { | |
| ext: 'rtf', | |
| mime: 'application/rtf' | |
| }; | |
| } | |
| if ( | |
| (buf[0] === 0x77 && buf[1] === 0x4F && buf[2] === 0x46 && buf[3] === 0x46) && | |
| ( | |
| (buf[4] === 0x00 && buf[5] === 0x01 && buf[6] === 0x00 && buf[7] === 0x00) || | |
| (buf[4] === 0x4F && buf[5] === 0x54 && buf[6] === 0x54 && buf[7] === 0x4F) | |
| ) | |
| ) { | |
| return { | |
| ext: 'woff', | |
| mime: 'application/font-woff' | |
| }; | |
| } | |
| if ( | |
| (buf[0] === 0x77 && buf[1] === 0x4F && buf[2] === 0x46 && buf[3] === 0x32) && | |
| ( | |
| (buf[4] === 0x00 && buf[5] === 0x01 && buf[6] === 0x00 && buf[7] === 0x00) || | |
| (buf[4] === 0x4F && buf[5] === 0x54 && buf[6] === 0x54 && buf[7] === 0x4F) | |
| ) | |
| ) { | |
| return { | |
| ext: 'woff2', | |
| mime: 'application/font-woff' | |
| }; | |
| } | |
| if ( | |
| (buf[34] === 0x4C && buf[35] === 0x50) && | |
| ( | |
| (buf[8] === 0x00 && buf[9] === 0x00 && buf[10] === 0x01) || | |
| (buf[8] === 0x01 && buf[9] === 0x00 && buf[10] === 0x02) || | |
| (buf[8] === 0x02 && buf[9] === 0x00 && buf[10] === 0x02) | |
| ) | |
| ) { | |
| return { | |
| ext: 'eot', | |
| mime: 'application/octet-stream' | |
| }; | |
| } | |
| if (buf[0] === 0x00 && buf[1] === 0x01 && buf[2] === 0x00 && buf[3] === 0x00 && buf[4] === 0x00) { | |
| return { | |
| ext: 'ttf', | |
| mime: 'application/font-sfnt' | |
| }; | |
| } | |
| if (buf[0] === 0x4F && buf[1] === 0x54 && buf[2] === 0x54 && buf[3] === 0x4F && buf[4] === 0x00) { | |
| return { | |
| ext: 'otf', | |
| mime: 'application/font-sfnt' | |
| }; | |
| } | |
| if (buf[0] === 0x00 && buf[1] === 0x00 && buf[2] === 0x01 && buf[3] === 0x00) { | |
| return { | |
| ext: 'ico', | |
| mime: 'image/x-icon' | |
| }; | |
| } | |
| if (buf[0] === 0x46 && buf[1] === 0x4C && buf[2] === 0x56 && buf[3] === 0x01) { | |
| return { | |
| ext: 'flv', | |
| mime: 'video/x-flv' | |
| }; | |
| } | |
| if (buf[0] === 0x25 && buf[1] === 0x21) { | |
| return { | |
| ext: 'ps', | |
| mime: 'application/postscript' | |
| }; | |
| } | |
| if (buf[0] === 0xFD && buf[1] === 0x37 && buf[2] === 0x7A && buf[3] === 0x58 && buf[4] === 0x5A && buf[5] === 0x00) { | |
| return { | |
| ext: 'xz', | |
| mime: 'application/x-xz' | |
| }; | |
| } | |
| if (buf[0] === 0x53 && buf[1] === 0x51 && buf[2] === 0x4C && buf[3] === 0x69) { | |
| return { | |
| ext: 'sqlite', | |
| mime: 'application/x-sqlite3' | |
| }; | |
| } | |
| if (buf[0] === 0x4E && buf[1] === 0x45 && buf[2] === 0x53 && buf[3] === 0x1A) { | |
| return { | |
| ext: 'nes', | |
| mime: 'application/x-nintendo-nes-rom' | |
| }; | |
| } | |
| if (buf[0] === 0x43 && buf[1] === 0x72 && buf[2] === 0x32 && buf[3] === 0x34) { | |
| return { | |
| ext: 'crx', | |
| mime: 'application/x-google-chrome-extension' | |
| }; | |
| } | |
| if ( | |
| (buf[0] === 0x4D && buf[1] === 0x53 && buf[2] === 0x43 && buf[3] === 0x46) || | |
| (buf[0] === 0x49 && buf[1] === 0x53 && buf[2] === 0x63 && buf[3] === 0x28) | |
| ) { | |
| return { | |
| ext: 'cab', | |
| mime: 'application/vnd.ms-cab-compressed' | |
| }; | |
| } | |
| // needs to be before `ar` check | |
| if (buf[0] === 0x21 && buf[1] === 0x3C && buf[2] === 0x61 && buf[3] === 0x72 && buf[4] === 0x63 && buf[5] === 0x68 && buf[6] === 0x3E && buf[7] === 0x0A && buf[8] === 0x64 && buf[9] === 0x65 && buf[10] === 0x62 && buf[11] === 0x69 && buf[12] === 0x61 && buf[13] === 0x6E && buf[14] === 0x2D && buf[15] === 0x62 && buf[16] === 0x69 && buf[17] === 0x6E && buf[18] === 0x61 && buf[19] === 0x72 && buf[20] === 0x79) { | |
| return { | |
| ext: 'deb', | |
| mime: 'application/x-deb' | |
| }; | |
| } | |
| if (buf[0] === 0x21 && buf[1] === 0x3C && buf[2] === 0x61 && buf[3] === 0x72 && buf[4] === 0x63 && buf[5] === 0x68 && buf[6] === 0x3E) { | |
| return { | |
| ext: 'ar', | |
| mime: 'application/x-unix-archive' | |
| }; | |
| } | |
| if (buf[0] === 0xED && buf[1] === 0xAB && buf[2] === 0xEE && buf[3] === 0xDB) { | |
| return { | |
| ext: 'rpm', | |
| mime: 'application/x-rpm' | |
| }; | |
| } | |
| if ( | |
| (buf[0] === 0x1F && buf[1] === 0xA0) || | |
| (buf[0] === 0x1F && buf[1] === 0x9D) | |
| ) { | |
| return { | |
| ext: 'Z', | |
| mime: 'application/x-compress' | |
| }; | |
| } | |
| if (buf[0] === 0x4C && buf[1] === 0x5A && buf[2] === 0x49 && buf[3] === 0x50) { | |
| return { | |
| ext: 'lz', | |
| mime: 'application/x-lzip' | |
| }; | |
| } | |
| if (buf[0] === 0xD0 && buf[1] === 0xCF && buf[2] === 0x11 && buf[3] === 0xE0 && buf[4] === 0xA1 && buf[5] === 0xB1 && buf[6] === 0x1A && buf[7] === 0xE1) { | |
| return { | |
| ext: 'msi', | |
| mime: 'application/x-msi' | |
| }; | |
| } | |
| return null; | |
| }; | |