
Research
/Security News
Critical Vulnerability in NestJS Devtools: Localhost RCE via Sandbox Escape
A flawed sandbox in @nestjs/devtools-integration lets attackers run code on your machine via CSRF, leading to full Remote Code Execution (RCE).
strong-daemon
Advanced tools
Requires Node.js v4.8.7
$ npm install strong-daemon
const { StrongDaemon } = require('strong-daemon');
var daemon = new StrongDaemon(
102,
null,
() => { console.log('tick', 'tock') }
);
daemon.start(); // Will print 'tick' 'tock' every ~102 ms
..
/* (!) Note that multiple 'start' call without previous 'stop' will throw error */
daemon.start(); // First call made after ~102ms
daemon.start(false);// First call made after ~102ms
daemon.start(true); // First call made immediately;
..
daemon.start();
daemon.isRunning(); // true
daemon.stop();
daemon.isRunning(); // false
daemon.start();
var daemon = new StrongDaemon(
102,
null,
console.log,
['tick', 'tock']
);
this
usage:const worker = {
data: {},
updateData(source) {
this.data = source.data;
}
}
var daemon = new StrongDaemon(
102,
worker, /* So `this` will be handled properly on `updateData` call */
worker.updateData,
[data_source]
);
daemon.start();
const worker = {
data: {},
source: {...},
updateData() {
this.data = this.source.data()
}
}
var daemon = new StrongDaemon(
101,
null, /* `this.source` will be undefined while daemon will call `updateData` */
worker.updateData
);
/* Error - `this.source` is undefined */
daemon.start();
/* your-lib.js */
const { getInstance } = require('strong-daemon');
// :(
const non_mockable_daemon = new StrongDaemon(...args);
// :)
const mockable_daemon = getInstance(...args);
/* test-your-lib.js */
const D = require('strong-daemon');
D.getInstance = () => { return your_mock; }
Alternative way:
/* your-lib.js */
const { StrongDaemon, getClass } = require('strong-daemon');
const non_mockable_daemon = new StrongDaemon(...args)
const MockableStrongDaemon = getClass();
const mockable_daemon = new MockableStrongDaemon(...args);
/* test-your-lib.js */
const D = require('strong-daemon');
D.getClass = () => { return YourMock; }
StrongDaemon
constructor( interval_time, caller, task, task_args=[] )
Arguments:
interval
integer number - interval time of task call in milliseconds. Note this is not guarntee to call task every interval, it works exactly the same as setInterval(..).unref()
caller
object | null - task's
caller context (in case if task will use 'this' keyword)task
function - task that will be called every interval
[task_args]
Array - list of arguments task will be called with.start( immediate_call )
Start daemon.
Arguments:
immediate_call
- boolean, is task should be called immediately after start call. Default false.stop()
Stop daemon (can be resterted by calling start
).
isRunning()
Returns:
interval
getter for provided interval_time
caller
getter for provided caller
task
getter for provided task
args
getter for provided args
([] returned if not provided])
getInstance
Provided for mocking purposes.
StrongDaemon
constructorgetClass
Provided for mocking purposes.
FAQs
Object wrapper for setInterval
We found that strong-daemon demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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