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Merge branch 'gzip-bugfix' of https://github.com/n1073645/CyberChef into n1073645-gzip-bugfix

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This commit is contained in:
n1474335 2019-12-20 15:17:36 +00:00
commit cb09949fb9
5 changed files with 162 additions and 10 deletions
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8
src/core/operations/Gunzip.mjs
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@ -5,9 +5,9 @@
*/
import Operation from "../Operation.mjs";
import zlibAndGzip from "zlibjs/bin/zlib_and_gzip.min.js";
import gunzip from "zlibjs/bin/gunzip.min.js";
const Zlib = zlibAndGzip.Zlib;
const Zlib = gunzip.Zlib;
/**
* Gunzip operation
@ -42,8 +42,8 @@ class Gunzip extends Operation {
* @returns {File}
*/
run(input, args) {
const gunzip = new Zlib.Gunzip(new Uint8Array(input));
return new Uint8Array(gunzip.decompress()).buffer;
const gzipObj = new Zlib.Gunzip(new Uint8Array(input));
return new Uint8Array(gzipObj.decompress()).buffer;
}
}

15
src/core/operations/Gzip.mjs
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@ -6,9 +6,9 @@
import Operation from "../Operation.mjs";
import {COMPRESSION_TYPE, ZLIB_COMPRESSION_TYPE_LOOKUP} from "../lib/Zlib.mjs";
import zlibAndGzip from "zlibjs/bin/zlib_and_gzip.min.js";
import gzip from "zlibjs/bin/gzip.min.js";
const Zlib = zlibAndGzip.Zlib;
const Zlib = gzip.Zlib;
/**
* Gzip operation
@ -73,12 +73,15 @@ class Gzip extends Operation {
options.filename = filename;
}
if (comment.length) {
options.flags.fcommenct = true;
options.flags.comment = true;
options.comment = comment;
}
const gzip = new Zlib.Gzip(new Uint8Array(input), options);
return new Uint8Array(gzip.compress()).buffer;
const gzipObj = new Zlib.Gzip(new Uint8Array(input), options);
const compressed = new Uint8Array(gzipObj.compress());
if (options.flags.comment && !(compressed[3] & 0x10)) {
compressed[3] |= 0x10;
}
return compressed.buffer;
}
}

2
tests/operations/index.mjs
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@ -41,6 +41,8 @@ import "./tests/DateTime.mjs";
import "./tests/ExtractEmailAddresses.mjs";
import "./tests/Fork.mjs";
import "./tests/FromDecimal.mjs";
import "./tests/Gzip.mjs";
import "./tests/Gunzip.mjs";
import "./tests/Hash.mjs";
import "./tests/HaversineDistance.mjs";
import "./tests/Hexdump.mjs";

58
tests/operations/tests/Gunzip.mjs Normal file
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@ -0,0 +1,58 @@
/**
* Gunzip Tests.
*
* @author n1073645 [n1073645@gmail.com]
*
* @copyright Crown Copyright 2019
* @license Apache-2.0
*/
import TestRegister from "../../lib/TestRegister.mjs";
TestRegister.addTests([
{
name: "Gunzip: No comment, no checksum and no filename",
input: "1f8b0800f7c8f85d00ff0dc9dd0180200804e0556ea8262848fb3dc588c6a7e76faa8aeedb726036c68d951f76bf9a0af8aae1f97d9c0c084b02509cbf8c2c000000",
expectedOutput: "The quick brown fox jumped over the slow dog",
recipeConfig: [
{
op: "From Hex",
args: ["None"]
},
{
op: "Gunzip",
args: []
}
]
},
{
name: "Gunzip: No comment, no checksum and filename",
input: "1f8b080843c9f85d00ff66696c656e616d65000dc9dd0180200804e0556ea8262848fb3dc588c6a7e76faa8aeedb726036c68d951f76bf9a0af8aae1f97d9c0c084b02509cbf8c2c000000",
expectedOutput: "The quick brown fox jumped over the slow dog",
recipeConfig: [
{
op: "From Hex",
args: ["None"]
},
{
op: "Gunzip",
args: []
}
]
},
{
name: "Gunzip: Has a comment, no checksum and has a filename",
input: "1f8b08186fc9f85d00ff66696c656e616d6500636f6d6d656e74000dc9dd0180200804e0556ea8262848fb3dc588c6a7e76faa8aeedb726036c68d951f76bf9a0af8aae1f97d9c0c084b02509cbf8c2c000000",
expectedOutput: "The quick brown fox jumped over the slow dog",
recipeConfig: [
{
op: "From Hex",
args: ["None"]
},
{
op: "Gunzip",
args: []
}
]
}
]);

89
tests/operations/tests/Gzip.mjs Normal file
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@ -0,0 +1,89 @@
/**
* Gzip Tests.
*
* @author n1073645 [n1073645@gmail.com]
*
* @copyright Crown Copyright 2019
* @license Apache-2.0
*/
import TestRegister from "../../lib/TestRegister.mjs";
TestRegister.addTests([
{
name: "Gzip: No comment, no checksum and no filename",
input: "The quick brown fox jumped over the slow dog",
expectedOutput: "0dc9dd0180200804e0556ea8262848fb3dc588c6a7e76faa8aeedb726036c68d951f76bf9a0af8aae1f97d9c0c084b02509cbf8c2c000000",
recipeConfig: [
{
op: "Gzip",
args: ["Dynamic Huffman Coding", "", "", false]
},
{
op: "Drop bytes",
args: [0, 10, false]
},
{
op: "To Hex",
args: ["None"]
}
]
},
{
name: "Gzip: No comment, no checksum and has a filename",
input: "The quick brown fox jumped over the slow dog",
expectedOutput: "636f6d6d656e74000dc9dd0180200804e0556ea8262848fb3dc588c6a7e76faa8aeedb726036c68d951f76bf9a0af8aae1f97d9c0c084b02509cbf8c2c000000",
recipeConfig: [
{
op: "Gzip",
args: ["Dynamic Huffman Coding", "comment", "", false]
},
{
op: "Drop bytes",
args: [0, 10, false]
},
{
op: "To Hex",
args: ["None"]
}
]
},
{
name: "Gzip: Has a comment, no checksum and no filename",
input: "The quick brown fox jumped over the slow dog",
expectedOutput: "636f6d6d656e74000dc9dd0180200804e0556ea8262848fb3dc588c6a7e76faa8aeedb726036c68d951f76bf9a0af8aae1f97d9c0c084b02509cbf8c2c000000",
recipeConfig: [
{
op: "Gzip",
args: ["Dynamic Huffman Coding", "", "comment", false]
},
{
op: "Drop bytes",
args: [0, 10, false]
},
{
op: "To Hex",
args: ["None"]
}
]
},
{
name: "Gzip: Has a comment, no checksum and has a filename",
input: "The quick brown fox jumped over the slow dog",
expectedOutput: "66696c656e616d6500636f6d6d656e74000dc9dd0180200804e0556ea8262848fb3dc588c6a7e76faa8aeedb726036c68d951f76bf9a0af8aae1f97d9c0c084b02509cbf8c2c000000",
recipeConfig: [
{
op: "Gzip",
args: ["Dynamic Huffman Coding", "filename", "comment", false]
},
{
op: "Drop bytes",
args: [0, 10, false]
},
{
op: "To Hex",
args: ["None"]
}
]
},
]);