mirrors/CyberChef
1
0
Fork 0
mirror of https://github.com/gchq/CyberChef.git synced 2025-04-20 23:06:16 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Tidied up image manipulation ops

Browse source
This commit is contained in:
n1474335 2019-03-09 07:23:11 +00:00
parent 369b640408
commit e10d4bf45c
14 changed files with 143 additions and 236 deletions
Download patch file Download diff file Expand all files Collapse all files

20
src/core/operations/CropImage.mjs
View file

@ -6,7 +6,7 @@
import Operation from "../Operation";
import OperationError from "../errors/OperationError";
import Magic from "../lib/Magic";
import { isImage } from "../lib/FileType";
import { toBase64 } from "../lib/Base64.mjs";
import jimp from "jimp";
@ -23,7 +23,7 @@ class CropImage extends Operation {
this.name = "Crop Image";
this.module = "Image";
this.description = "Crops an image to the specified region, or automatically crop edges.<br><br><b><u>Autocrop</u></b><br>Automatically crops same-colour borders from the image.<br><br><u>Autocrop tolerance</u><br>A percentage value for the tolerance of colour difference between pixels.<br><br><u>Only autocrop frames</u><br>Only crop real frames (all sides must have the same border)<br><br><u>Symmetric autocrop</u><br>Force autocrop to be symmetric (top/bottom and left/right are cropped by the same amount)<br><br><u>Autocrop keep border</u><br>The number of pixels of border to leave around the image.";
this.description = "Crops an image to the specified region, or automatically crops edges.<br><br><b><u>Autocrop</u></b><br>Automatically crops same-colour borders from the image.<br><br><u>Autocrop tolerance</u><br>A percentage value for the tolerance of colour difference between pixels.<br><br><u>Only autocrop frames</u><br>Only crop real frames (all sides must have the same border)<br><br><u>Symmetric autocrop</u><br>Force autocrop to be symmetric (top/bottom and left/right are cropped by the same amount)<br><br><u>Autocrop keep border</u><br>The number of pixels of border to leave around the image.";
this.infoURL = "https://wikipedia.org/wiki/Cropping_(image)";
this.inputType = "byteArray";
this.outputType = "byteArray";
@ -91,10 +91,8 @@ class CropImage extends Operation {
* @returns {byteArray}
*/
async run(input, args) {
// const [firstArg, secondArg] = args;
const [xPos, yPos, width, height, autocrop, autoTolerance, autoFrames, autoSymmetric, autoBorder] = args;
const type = Magic.magicFileType(input);
if (!type || type.mime.indexOf("image") !== 0){
if (!isImage(input)) {
throw new OperationError("Invalid file type.");
}
@ -133,16 +131,12 @@ class CropImage extends Operation {
present(data) {
if (!data.length) return "";
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");
const type = isImage(data);
if (!type) {
throw new OperationError("Invalid file type.");
}
dataURI += "base64," + toBase64(data);
return "<img src='" + dataURI + "'>";
return `<img src="data:${type};base64,${toBase64(data)}">`;
}
}