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CyberChef
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Tidied up QR code operations

master
n1474335 2018-12-25 21:54:38 +00:00
parent 4ee0800990
commit 9734b78aeb
5 changed files with 683 additions and 140 deletions
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6
CHANGELOG.md
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@ -2,6 +2,9 @@
All major and minor version changes will be documented in this file. Details of patch-level version changes can be found in [commit messages](https://github.com/gchq/CyberChef/commits/master).
### [8.17.0] - 2018-12-25
- 'Generate QR Code' and 'Parse QR Code' operations added [@j433866] | [#448]
### [8.16.0] - 2018-12-19
- 'Play Media' operation added [@anthony-arnold] | [#446]
@ -79,6 +82,7 @@ All major and minor version changes will be documented in this file. Details of
[8.17.0]: https://github.com/gchq/CyberChef/releases/tag/v8.17.0
[8.16.0]: https://github.com/gchq/CyberChef/releases/tag/v8.16.0
[8.15.0]: https://github.com/gchq/CyberChef/releases/tag/v8.15.0
[8.14.0]: https://github.com/gchq/CyberChef/releases/tag/v8.14.0
@ -103,6 +107,7 @@ All major and minor version changes will be documented in this file. Details of
[@n1474335]: https://github.com/n1474335
[@d98762625]: https://github.com/d98762625
[@j433866]: https://github.com/j433866
[@GCHQ77703]: https://github.com/GCHQ77703
[@artemisbot]: https://github.com/artemisbot
[@picapi]: https://github.com/picapi
@ -144,3 +149,4 @@ All major and minor version changes will be documented in this file. Details of
[#441]: https://github.com/gchq/CyberChef/pull/441
[#443]: https://github.com/gchq/CyberChef/pull/443
[#446]: https://github.com/gchq/CyberChef/pull/446
[#448]: https://github.com/gchq/CyberChef/pull/448

704
package-lock.json generated
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63
src/core/operations/GenerateQRCode.mjs
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@ -9,6 +9,7 @@ import OperationError from "../errors/OperationError";
import qr from "qr-image";
import { toBase64 } from "../lib/Base64";
import Magic from "../lib/Magic";
import Utils from "../Utils";
/**
* Generate QR Code operation
@ -23,7 +24,7 @@ class GenerateQRCode extends Operation {
this.name = "Generate QR Code";
this.module = "Image";
this.description = "Generates a QR code from text.";
this.description = "Generates a Quick Response (QR) code from the input text.<br><br>A QR code is a type of matrix barcode (or two-dimensional barcode) first designed in 1994 for the automotive industry in Japan. A barcode is a machine-readable optical label that contains information about the item to which it is attached.";
this.infoURL = "https://wikipedia.org/wiki/QR_code";
this.inputType = "string";
this.outputType = "byteArray";
@ -32,17 +33,23 @@ class GenerateQRCode extends Operation {
{
"name": "Image Format",
"type": "option",
"value": ["PNG", "SVG"]
"value": ["PNG", "SVG", "EPS", "PDF"]
},
{
"name": "Size of QR module",
"name": "Module size (px)",
"type": "number",
"value": 5
},
{
"name": "Margin",
"name": "Margin (num modules)",
"type": "number",
"value": 2
},
{
"name": "Error correction",
"type": "option",
"value": ["Low", "Medium", "Quartile", "High"],
"defaultIndex": 1
}
];
}
@ -50,28 +57,39 @@ class GenerateQRCode extends Operation {
/**
* @param {string} input
* @param {Object[]} args
* @returns {File}
* @returns {byteArray}
*/
run(input, args) {
const [format, size, margin, errorCorrection] = args;
// Create new QR image from the input data, and convert it to a buffer
const [format, size, margin] = args;
const qrImage = qr.imageSync(input, { type: format, size: size, margin: margin });
const qrImage = qr.imageSync(input, {
type: format,
size: size,
margin: margin,
"ec_level": errorCorrection.charAt(0).toUpperCase()
});
if (qrImage == null) {
throw new OperationError("Error generating QR code.");
}
if (format === "SVG") {
return [...Buffer.from(qrImage)];
} else if (format === "PNG") {
// Return the QR image buffer as a byte array
return [...qrImage];
} else {
throw new OperationError("Error generating QR code.");
switch (format) {
case "SVG":
case "EPS":
case "PDF":
return [...Buffer.from(qrImage)];
case "PNG":
// Return the QR image buffer as a byte array
return [...qrImage];
default:
throw new OperationError("Unsupported QR code format.");
}
}
/**
* Displays the QR image using HTML for web apps
*
*
* @param {byteArray} data
* @returns {html}
*/
@ -79,24 +97,21 @@ class GenerateQRCode extends Operation {
if (!data.length) return "";
const [format] = args;
if (format === "SVG") {
let outputData = "";
for (let i = 0; i < data.length; i++){
outputData += String.fromCharCode(parseInt(data[i]));
}
return outputData;
} else {
if (format === "PNG") {
let dataURI = "data:";
const type = Magic.magicFileType(data);
if (type && type.mime.indexOf("image") === 0){
dataURI += type.mime + ";";
} else {
throw new OperationError("Invalid file type");
throw new OperationError("Invalid PNG file generated by QR image");
}
dataURI += "base64," + toBase64(data);
return "<img src='" + dataURI + "'>";
return `<img src="${dataURI}">`;
}
return Utils.byteArrayToChars(data);
}
}

38
src/core/operations/ParseQRCode.mjs
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@ -23,7 +23,7 @@ class ParseQRCode extends Operation {
this.name = "Parse QR Code";
this.module = "Image";
this.description = "Reads an image file and attempts to detect and read a QR code from the image.<br><br><u>Normalise Image</u><br>Attempt to normalise the image before parsing it, to try and improve detection of a QR code.";
this.description = "Reads an image file and attempts to detect and read a Quick Response (QR) code from the image.<br><br><u>Normalise Image</u><br>Attempts to normalise the image before parsing it to improve detection of a QR code.";
this.infoURL = "https://wikipedia.org/wiki/QR_code";
this.inputType = "byteArray";
this.outputType = "string";
@ -31,7 +31,7 @@ class ParseQRCode extends Operation {
{
"name": "Normalise image",
"type": "boolean",
"value": true
"value": false
}
];
}
@ -44,17 +44,19 @@ class ParseQRCode extends Operation {
async run(input, args) {
const type = Magic.magicFileType(input);
const [normalise] = args;
// Make sure that the input is an image
if (type && type.mime.indexOf("image") === 0){
let normalisedImage = null;
if (normalise){
if (type && type.mime.indexOf("image") === 0) {
let image = input;
if (normalise) {
// Process the image to be easier to read by jsqr
// Disables the alpha channel
// Sets the image default background to white
// Normalises the image colours
// Makes the image greyscale
// Converts image to a JPEG
normalisedImage = await new Promise((resolve, reject) => {
// Converts image to a JPEG
image = await new Promise((resolve, reject) => {
jimp.read(Buffer.from(input))
.then(image => {
image
@ -63,38 +65,38 @@ class ParseQRCode extends Operation {
.normalize()
.greyscale()
.getBuffer(jimp.MIME_JPEG, (error, result) => {
resolve([...result]);
resolve(result);
});
})
.catch(err => {
reject(new OperationError("Error reading the image file."));
});
});
} else {
normalisedImage = input;
}
if (normalisedImage instanceof OperationError){
return normalisedImage;
if (image instanceof OperationError) {
throw image;
}
return new Promise((resolve, reject) => {
jimp.read(Buffer.from(normalisedImage))
jimp.read(Buffer.from(image))
.then(image => {
if (image.bitmap != null){
if (image.bitmap != null) {
const qrData = jsqr(image.bitmap.data, image.getWidth(), image.getHeight());
if (qrData != null){
if (qrData != null) {
resolve(qrData.data);
} else {
reject(new OperationError("Couldn't read a QR code from the image."));
}
} else {
reject(new OperationError("Error reading the normalised image file."));
reject(new OperationError("Error reading the image file."));
}
})
.catch(err => {
reject(new OperationError("Error reading the normalised image file."));
reject(new OperationError("Error reading the image file."));
});
});
} else {
} else {
throw new OperationError("Invalid file type.");
}

12
test/tests/operations/ParseQRCode.mjs
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@ -1,6 +1,6 @@
/**
/**
* Parse QR Code tests
*
*
* @author j433866 [j433866@gmail.com]
* @copyright Crown Copyright 2018
* @license Apache-2.0
@ -15,7 +15,7 @@ TestRegister.addTests([
recipeConfig: [
{
"op": "From Hex",
"args": ["Space"]
"args": ["None"]
},
{
"op": "Parse QR Code",
@ -34,7 +34,7 @@ TestRegister.addTests([
},
{
"op": "Parse QR Code",
"args": [true]
"args": [false]
},
],
},
@ -45,7 +45,7 @@ TestRegister.addTests([
recipeConfig: [
{
"op": "From Hex",
"args": ["Space"]
"args": ["None"]
},
{
"op": "Parse QR Code",
@ -60,7 +60,7 @@ TestRegister.addTests([
recipeConfig: [
{
"op": "From Hex",
"args": ["Space"]
"args": ["None"]
},
{
"op": "Parse QR Code",