mirror of https://github.com/gchq/CyberChef.git
Significantly improved performance when scanning for embedded files by implementing a fastcheck algorithm.
This commit is contained in:
n1474335
parent
4c285bce57
commit
a56f92cdee
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"dev": true,
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"dev": true,
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"dev": true,
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"requires": {
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"dependencies": {
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"integrity": "sha1-vSh3PiZCiBrsUVRJJCmcXNgiGFs=",
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|
||||
"integrity": "sha1-lWkFcI1YtLq0wiYbBPWfMcmTdMA=",
|
||||
"dev": true,
|
||||
"requires": {
|
||||
|
|
@ -7743,7 +7743,7 @@
|
|||
"dependencies": {
|
||||
"pify": {
|
||||
"version": "2.3.0",
|
||||
"resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
|
||||
"resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
|
||||
"integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
|
||||
"dev": true
|
||||
}
|
||||
|
|
@ -8102,7 +8102,7 @@
|
|||
},
|
||||
"media-typer": {
|
||||
"version": "0.3.0",
|
||||
"resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
|
||||
"resolved": "http://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
|
||||
"integrity": "sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g=",
|
||||
"dev": true
|
||||
},
|
||||
|
|
@ -8161,7 +8161,7 @@
|
|||
},
|
||||
"meow": {
|
||||
"version": "3.7.0",
|
||||
"resolved": "https://registry.npmjs.org/meow/-/meow-3.7.0.tgz",
|
||||
"resolved": "http://registry.npmjs.org/meow/-/meow-3.7.0.tgz",
|
||||
"integrity": "sha1-cstmi0JSKCkKu/qFaJJYcwioAfs=",
|
||||
"dev": true,
|
||||
"requires": {
|
||||
|
|
@ -8346,7 +8346,7 @@
|
|||
},
|
||||
"mkdirp": {
|
||||
"version": "0.5.1",
|
||||
"resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
|
||||
"resolved": "http://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
|
||||
"integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
|
||||
"requires": {
|
||||
"minimist": "0.0.8"
|
||||
|
|
@ -8556,7 +8556,7 @@
|
|||
},
|
||||
"ncp": {
|
||||
"version": "1.0.1",
|
||||
"resolved": "https://registry.npmjs.org/ncp/-/ncp-1.0.1.tgz",
|
||||
"resolved": "http://registry.npmjs.org/ncp/-/ncp-1.0.1.tgz",
|
||||
"integrity": "sha1-0VNn5cuHQyuhF9K/gP30Wuz7QkY=",
|
||||
"dev": true
|
||||
},
|
||||
|
|
@ -8655,7 +8655,7 @@
|
|||
"dependencies": {
|
||||
"semver": {
|
||||
"version": "5.3.0",
|
||||
"resolved": "https://registry.npmjs.org/semver/-/semver-5.3.0.tgz",
|
||||
"resolved": "http://registry.npmjs.org/semver/-/semver-5.3.0.tgz",
|
||||
"integrity": "sha1-myzl094C0XxgEq0yaqa00M9U+U8=",
|
||||
"dev": true
|
||||
}
|
||||
|
|
@ -8827,7 +8827,7 @@
|
|||
"dependencies": {
|
||||
"colors": {
|
||||
"version": "0.5.1",
|
||||
"resolved": "https://registry.npmjs.org/colors/-/colors-0.5.1.tgz",
|
||||
"resolved": "http://registry.npmjs.org/colors/-/colors-0.5.1.tgz",
|
||||
"integrity": "sha1-fQAj6usVTo7p/Oddy5I9DtFmd3Q="
|
||||
},
|
||||
"underscore": {
|
||||
|
|
@ -9121,13 +9121,13 @@
|
|||
},
|
||||
"os-homedir": {
|
||||
"version": "1.0.2",
|
||||
"resolved": "https://registry.npmjs.org/os-homedir/-/os-homedir-1.0.2.tgz",
|
||||
"resolved": "http://registry.npmjs.org/os-homedir/-/os-homedir-1.0.2.tgz",
|
||||
"integrity": "sha1-/7xJiDNuDoM94MFox+8VISGqf7M=",
|
||||
"dev": true
|
||||
},
|
||||
"os-locale": {
|
||||
"version": "1.4.0",
|
||||
"resolved": "https://registry.npmjs.org/os-locale/-/os-locale-1.4.0.tgz",
|
||||
"resolved": "http://registry.npmjs.org/os-locale/-/os-locale-1.4.0.tgz",
|
||||
"integrity": "sha1-IPnxeuKe00XoveWDsT0gCYA8FNk=",
|
||||
"dev": true,
|
||||
"requires": {
|
||||
|
|
@ -9136,7 +9136,7 @@
|
|||
},
|
||||
"os-tmpdir": {
|
||||
"version": "1.0.2",
|
||||
"resolved": "https://registry.npmjs.org/os-tmpdir/-/os-tmpdir-1.0.2.tgz",
|
||||
"resolved": "http://registry.npmjs.org/os-tmpdir/-/os-tmpdir-1.0.2.tgz",
|
||||
"integrity": "sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ=",
|
||||
"dev": true
|
||||
},
|
||||
|
|
@ -9351,7 +9351,7 @@
|
|||
},
|
||||
"parse-asn1": {
|
||||
"version": "5.1.1",
|
||||
"resolved": "https://registry.npmjs.org/parse-asn1/-/parse-asn1-5.1.1.tgz",
|
||||
"resolved": "http://registry.npmjs.org/parse-asn1/-/parse-asn1-5.1.1.tgz",
|
||||
"integrity": "sha512-KPx7flKXg775zZpnp9SxJlz00gTd4BmJ2yJufSc44gMCRrRQ7NSzAcSJQfifuOLgW6bEi+ftrALtsgALeB2Adw==",
|
||||
"dev": true,
|
||||
"requires": {
|
||||
|
|
@ -9437,7 +9437,7 @@
|
|||
},
|
||||
"path-is-absolute": {
|
||||
"version": "1.0.1",
|
||||
"resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
|
||||
"resolved": "http://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
|
||||
"integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
|
||||
"dev": true
|
||||
},
|
||||
|
|
@ -9478,7 +9478,7 @@
|
|||
"dependencies": {
|
||||
"pify": {
|
||||
"version": "2.3.0",
|
||||
"resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
|
||||
"resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
|
||||
"integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
|
||||
"dev": true
|
||||
}
|
||||
|
|
@ -9661,7 +9661,7 @@
|
|||
"dependencies": {
|
||||
"async": {
|
||||
"version": "1.5.2",
|
||||
"resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
|
||||
"resolved": "http://registry.npmjs.org/async/-/async-1.5.2.tgz",
|
||||
"integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
|
||||
"dev": true
|
||||
}
|
||||
|
|
@ -10073,7 +10073,7 @@
|
|||
},
|
||||
"progress": {
|
||||
"version": "1.1.8",
|
||||
"resolved": "https://registry.npmjs.org/progress/-/progress-1.1.8.tgz",
|
||||
"resolved": "http://registry.npmjs.org/progress/-/progress-1.1.8.tgz",
|
||||
"integrity": "sha1-4mDHj2Fhzdmw5WzD4Khd4Xx6V74="
|
||||
},
|
||||
"promise-inflight": {
|
||||
|
|
@ -10098,13 +10098,13 @@
|
|||
"dependencies": {
|
||||
"async": {
|
||||
"version": "1.0.0",
|
||||
"resolved": "https://registry.npmjs.org/async/-/async-1.0.0.tgz",
|
||||
"resolved": "http://registry.npmjs.org/async/-/async-1.0.0.tgz",
|
||||
"integrity": "sha1-+PwEyjoTeErenhZBr5hXjPvWR6k=",
|
||||
"dev": true
|
||||
},
|
||||
"winston": {
|
||||
"version": "2.1.1",
|
||||
"resolved": "https://registry.npmjs.org/winston/-/winston-2.1.1.tgz",
|
||||
"resolved": "http://registry.npmjs.org/winston/-/winston-2.1.1.tgz",
|
||||
"integrity": "sha1-PJNJ0ZYgf9G9/51LxD73JRDjoS4=",
|
||||
"dev": true,
|
||||
"requires": {
|
||||
|
|
@ -10119,7 +10119,7 @@
|
|||
"dependencies": {
|
||||
"colors": {
|
||||
"version": "1.0.3",
|
||||
"resolved": "https://registry.npmjs.org/colors/-/colors-1.0.3.tgz",
|
||||
"resolved": "http://registry.npmjs.org/colors/-/colors-1.0.3.tgz",
|
||||
"integrity": "sha1-BDP0TYCWgP3rYO0mDxsMJi6CpAs=",
|
||||
"dev": true
|
||||
},
|
||||
|
|
@ -10342,7 +10342,7 @@
|
|||
"dependencies": {
|
||||
"pify": {
|
||||
"version": "2.3.0",
|
||||
"resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
|
||||
"resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
|
||||
"integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
|
||||
"dev": true
|
||||
}
|
||||
|
|
@ -10531,7 +10531,7 @@
|
|||
"dependencies": {
|
||||
"jsesc": {
|
||||
"version": "0.5.0",
|
||||
"resolved": "https://registry.npmjs.org/jsesc/-/jsesc-0.5.0.tgz",
|
||||
"resolved": "http://registry.npmjs.org/jsesc/-/jsesc-0.5.0.tgz",
|
||||
"integrity": "sha1-597mbjXW/Bb3EP6R1c9p9w8IkR0=",
|
||||
"dev": true
|
||||
}
|
||||
|
|
@ -10582,7 +10582,7 @@
|
|||
},
|
||||
"htmlparser2": {
|
||||
"version": "3.3.0",
|
||||
"resolved": "https://registry.npmjs.org/htmlparser2/-/htmlparser2-3.3.0.tgz",
|
||||
"resolved": "http://registry.npmjs.org/htmlparser2/-/htmlparser2-3.3.0.tgz",
|
||||
"integrity": "sha1-zHDQWln2VC5D8OaFyYLhTJJKnv4=",
|
||||
"dev": true,
|
||||
"requires": {
|
||||
|
|
@ -10594,7 +10594,7 @@
|
|||
},
|
||||
"readable-stream": {
|
||||
"version": "1.0.34",
|
||||
"resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
|
||||
"resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
|
||||
"integrity": "sha1-Elgg40vIQtLyqq+v5MKRbuMsFXw=",
|
||||
"dev": true,
|
||||
"requires": {
|
||||
|
|
@ -10704,7 +10704,7 @@
|
|||
},
|
||||
"require-uncached": {
|
||||
"version": "1.0.3",
|
||||
"resolved": "https://registry.npmjs.org/require-uncached/-/require-uncached-1.0.3.tgz",
|
||||
"resolved": "http://registry.npmjs.org/require-uncached/-/require-uncached-1.0.3.tgz",
|
||||
"integrity": "sha1-Tg1W1slmL9MeQwEcS5WqSZVUIdM=",
|
||||
"dev": true,
|
||||
"requires": {
|
||||
|
|
@ -10871,7 +10871,7 @@
|
|||
},
|
||||
"safe-regex": {
|
||||
"version": "1.1.0",
|
||||
"resolved": "https://registry.npmjs.org/safe-regex/-/safe-regex-1.1.0.tgz",
|
||||
"resolved": "http://registry.npmjs.org/safe-regex/-/safe-regex-1.1.0.tgz",
|
||||
"integrity": "sha1-QKNmnzsHfR6UPURinhV91IAjvy4=",
|
||||
"dev": true,
|
||||
"requires": {
|
||||
|
|
@ -11191,7 +11191,7 @@
|
|||
},
|
||||
"sha.js": {
|
||||
"version": "2.4.11",
|
||||
"resolved": "https://registry.npmjs.org/sha.js/-/sha.js-2.4.11.tgz",
|
||||
"resolved": "http://registry.npmjs.org/sha.js/-/sha.js-2.4.11.tgz",
|
||||
"integrity": "sha512-QMEp5B7cftE7APOjk5Y6xgrbWu+WkLVQwk8JNjZ8nKRciZaByEW6MubieAiToS7+dwvrjGhH8jRXz3MVd0AYqQ==",
|
||||
"dev": true,
|
||||
"requires": {
|
||||
|
|
@ -11235,7 +11235,7 @@
|
|||
},
|
||||
"shelljs": {
|
||||
"version": "0.3.0",
|
||||
"resolved": "https://registry.npmjs.org/shelljs/-/shelljs-0.3.0.tgz",
|
||||
"resolved": "http://registry.npmjs.org/shelljs/-/shelljs-0.3.0.tgz",
|
||||
"integrity": "sha1-NZbmMHp4FUT1kfN9phg2DzHbV7E=",
|
||||
"dev": true
|
||||
},
|
||||
|
|
@ -11913,7 +11913,7 @@
|
|||
},
|
||||
"strip-ansi": {
|
||||
"version": "3.0.1",
|
||||
"resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
|
||||
"resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
|
||||
"integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
|
||||
"requires": {
|
||||
"ansi-regex": "^2.0.0"
|
||||
|
|
@ -11930,7 +11930,7 @@
|
|||
},
|
||||
"strip-eof": {
|
||||
"version": "1.0.0",
|
||||
"resolved": "https://registry.npmjs.org/strip-eof/-/strip-eof-1.0.0.tgz",
|
||||
"resolved": "http://registry.npmjs.org/strip-eof/-/strip-eof-1.0.0.tgz",
|
||||
"integrity": "sha1-u0P/VZim6wXYm1n80SnJgzE2Br8=",
|
||||
"dev": true
|
||||
},
|
||||
|
|
@ -12009,7 +12009,7 @@
|
|||
},
|
||||
"tar": {
|
||||
"version": "2.2.1",
|
||||
"resolved": "https://registry.npmjs.org/tar/-/tar-2.2.1.tgz",
|
||||
"resolved": "http://registry.npmjs.org/tar/-/tar-2.2.1.tgz",
|
||||
"integrity": "sha1-jk0qJWwOIYXGsYrWlK7JaLg8sdE=",
|
||||
"dev": true,
|
||||
"requires": {
|
||||
|
|
@ -12064,7 +12064,7 @@
|
|||
},
|
||||
"through": {
|
||||
"version": "2.3.8",
|
||||
"resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",
|
||||
"resolved": "http://registry.npmjs.org/through/-/through-2.3.8.tgz",
|
||||
"integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=",
|
||||
"dev": true
|
||||
},
|
||||
|
|
@ -12758,7 +12758,7 @@
|
|||
"dependencies": {
|
||||
"async": {
|
||||
"version": "0.9.2",
|
||||
"resolved": "https://registry.npmjs.org/async/-/async-0.9.2.tgz",
|
||||
"resolved": "http://registry.npmjs.org/async/-/async-0.9.2.tgz",
|
||||
"integrity": "sha1-rqdNXmHB+JlhO/ZL2mbUx48v0X0=",
|
||||
"dev": true
|
||||
},
|
||||
|
|
@ -12784,7 +12784,7 @@
|
|||
},
|
||||
"valid-data-url": {
|
||||
"version": "0.1.6",
|
||||
"resolved": "https://registry.npmjs.org/valid-data-url/-/valid-data-url-0.1.6.tgz",
|
||||
"resolved": "http://registry.npmjs.org/valid-data-url/-/valid-data-url-0.1.6.tgz",
|
||||
"integrity": "sha512-FXg2qXMzfAhZc0y2HzELNfUeiOjPr+52hU1DNBWiJJ2luXD+dD1R9NA48Ug5aj0ibbxroeGDc/RJv6ThiGgkDw==",
|
||||
"dev": true
|
||||
},
|
||||
|
|
@ -12800,7 +12800,7 @@
|
|||
},
|
||||
"validator": {
|
||||
"version": "9.4.1",
|
||||
"resolved": "https://registry.npmjs.org/validator/-/validator-9.4.1.tgz",
|
||||
"resolved": "http://registry.npmjs.org/validator/-/validator-9.4.1.tgz",
|
||||
"integrity": "sha512-YV5KjzvRmSyJ1ee/Dm5UED0G+1L4GZnLN3w6/T+zZm8scVua4sOhYKWTUrKa0H/tMiJyO9QLHMPN+9mB/aMunA==",
|
||||
"dev": true
|
||||
},
|
||||
|
|
@ -13296,7 +13296,7 @@
|
|||
},
|
||||
"webpack-node-externals": {
|
||||
"version": "1.7.2",
|
||||
"resolved": "https://registry.npmjs.org/webpack-node-externals/-/webpack-node-externals-1.7.2.tgz",
|
||||
"resolved": "http://registry.npmjs.org/webpack-node-externals/-/webpack-node-externals-1.7.2.tgz",
|
||||
"integrity": "sha512-ajerHZ+BJKeCLviLUUmnyd5B4RavLF76uv3cs6KNuO8W+HuQaEs0y0L7o40NQxdPy5w0pcv8Ew7yPUAQG0UdCg==",
|
||||
"dev": true
|
||||
},
|
||||
|
|
@ -13450,14 +13450,14 @@
|
|||
"dependencies": {
|
||||
"async": {
|
||||
"version": "1.0.0",
|
||||
"resolved": "https://registry.npmjs.org/async/-/async-1.0.0.tgz",
|
||||
"resolved": "http://registry.npmjs.org/async/-/async-1.0.0.tgz",
|
||||
"integrity": "sha1-+PwEyjoTeErenhZBr5hXjPvWR6k=",
|
||||
"dev": true,
|
||||
"optional": true
|
||||
},
|
||||
"colors": {
|
||||
"version": "1.0.3",
|
||||
"resolved": "https://registry.npmjs.org/colors/-/colors-1.0.3.tgz",
|
||||
"resolved": "http://registry.npmjs.org/colors/-/colors-1.0.3.tgz",
|
||||
"integrity": "sha1-BDP0TYCWgP3rYO0mDxsMJi6CpAs=",
|
||||
"dev": true,
|
||||
"optional": true
|
||||
|
|
@ -13490,7 +13490,7 @@
|
|||
},
|
||||
"wrap-ansi": {
|
||||
"version": "2.1.0",
|
||||
"resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
|
||||
"resolved": "http://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
|
||||
"integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
|
||||
"dev": true,
|
||||
"requires": {
|
||||
|
|
|
|||
|
|
@ -128,17 +128,58 @@ export function scanForFileTypes(buf) {
|
|||
|
||||
for (let i = 0; i < category.length; i++) {
|
||||
const filetype = category[i];
|
||||
for (let pos = 0; pos < buf.length; pos++) {
|
||||
if (signatureMatches(filetype.signature, buf, pos)) {
|
||||
foundFiles.push({
|
||||
offset: pos,
|
||||
fileDetails: filetype
|
||||
});
|
||||
const sigs = filetype.signature.length ? filetype.signature : [filetype.signature];
|
||||
|
||||
sigs.forEach(sig => {
|
||||
let pos = 0;
|
||||
while ((pos = locatePotentialSig(buf, sig, pos)) >= 0) {
|
||||
if (signatureMatches(sig, buf, pos)) {
|
||||
foundFiles.push({
|
||||
offset: pos,
|
||||
fileDetails: filetype
|
||||
});
|
||||
}
|
||||
pos++;
|
||||
}
|
||||
}
|
||||
});
|
||||
}
|
||||
}
|
||||
return foundFiles;
|
||||
|
||||
// Return found files in order of increasing offset
|
||||
return foundFiles.sort((a, b) => {
|
||||
return a.offset - b.offset;
|
||||
});
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Fastcheck function to quickly scan the buffer for the first byte in a signature.
|
||||
*
|
||||
* @param {Uint8Array} buf - The buffer to search
|
||||
* @param {Object} sig - A single signature object (Not an array of signatures)
|
||||
* @param {number} offset - Where to start search from
|
||||
* @returs {number} The position of the match or -1 if one cannot be found.
|
||||
*/
|
||||
function locatePotentialSig(buf, sig, offset) {
|
||||
// Find values for first key and value in sig
|
||||
const k = parseInt(Object.keys(sig)[0], 10);
|
||||
const v = Object.values(sig)[0];
|
||||
switch (typeof v) {
|
||||
case "number":
|
||||
return buf.indexOf(v, offset + k) - k;
|
||||
case "object":
|
||||
for (let i = offset + k; i < buf.length; i++) {
|
||||
if (v.indexOf(buf[i]) >= 0) return i - k;
|
||||
}
|
||||
return -1;
|
||||
case "function":
|
||||
for (let i = offset + k; i < buf.length; i++) {
|
||||
if (v(buf[i])) return i - k;
|
||||
}
|
||||
return -1;
|
||||
default:
|
||||
throw new Error("Unrecognised signature type");
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -155,9 +196,15 @@ export function isType(type, buf) {
|
|||
if (!(types && types.length)) return false;
|
||||
|
||||
if (typeof type === "string") {
|
||||
return types[0].mime.startsWith(type) ? types[0].mime : false;
|
||||
return types.reduce((acc, t) => {
|
||||
const mime = t.mime.startsWith(type) ? t.mime : false;
|
||||
return acc || mime;
|
||||
}, false);
|
||||
} else if (type instanceof RegExp) {
|
||||
return type.test(types[0].mime) ? types[0].mime : false;
|
||||
return types.reduce((acc, t) => {
|
||||
const mime = type.test(t.mime) ? t.mime : false;
|
||||
return acc || mime;
|
||||
}, false);
|
||||
} else {
|
||||
throw new Error("Invalid type input.");
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue