mirrors/CyberChef
1
0
Fork 0
mirror of https://github.com/gchq/CyberChef.git synced 2025-04-23 00:06:17 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Untar operation now uses lib/Stream library

Browse source
This commit is contained in:
n1474335 2018-12-30 01:36:58 +00:00
parent fd07b89028
commit 3ae225ac59
2 changed files with 3 additions and 34 deletions
Download patch file Download diff file Expand all files Collapse all files

35
src/core/operations/Untar.mjs
View file

@ -6,6 +6,7 @@
import Operation from "../Operation";
import Utils from "../Utils";
import Stream from "../lib/Stream";
/**
* Untar operation
@ -41,38 +42,6 @@ class Untar extends Operation {
* @returns {List<File>}
*/
run(input, args) {
const Stream = function(input) {
this.bytes = input;
this.position = 0;
};
Stream.prototype.getBytes = function(bytesToGet) {
const newPosition = this.position + bytesToGet;
const bytes = this.bytes.slice(this.position, newPosition);
this.position = newPosition;
return bytes;
};
Stream.prototype.readString = function(numBytes) {
let result = "";
for (let i = this.position; i < this.position + numBytes; i++) {
const currentByte = this.bytes[i];
if (currentByte === 0) break;
result += String.fromCharCode(currentByte);
}
this.position += numBytes;
return result;
};
Stream.prototype.readInt = function(numBytes, base) {
const string = this.readString(numBytes);
return parseInt(string, base);
};
Stream.prototype.hasMore = function() {
return this.position < this.bytes.length;
};
const stream = new Stream(input),
files = [];
@ -85,7 +54,7 @@ class Untar extends Operation {
ownerUID: stream.readString(8),
ownerGID: stream.readString(8),
size: parseInt(stream.readString(12), 8), // Octal
lastModTime: new Date(1000 * stream.readInt(12, 8)), // Octal
lastModTime: new Date(1000 * parseInt(stream.readString(12), 8)), // Octal
checksum: stream.readString(8),
type: stream.readString(1),
linkedFileName: stream.readString(100),