Setting cookies?

[peace2000]

Hi @uBlock-user, as you have scriplets to set local items and session items, could you also consider adding a scriplet that allows to set cookies on websites? This could be useful as it'd allow automatically to force specific settings on websites or restore them if the browser cache has been emptied.

One use case: if you set a cookie on Youtube https://www.youtube.com/ which Name is SOCS and Value is CAESEwgDEgk1MjE4NjcxMTIaAmVuIAEaBgiAl7ihBg, that would allow to skip the GDPR dialog automatically with the setting "Reject all".

[uBlock-user]

/// setCookie.js
// example.com##+js(setCookie, SOCS, CAESEwgDEgk1MjE4NjcxMTIaAmVuIAEaBgiAl7ihBg)
function( 
	cName = '', 
	cValue = '',
	expTime = '',
	behavior = '' 
) {
	let timer = undefined;
	if ( cName === '' ) { return; }
	if ( expTime === '' ) { expTime = '1'; }
	if ( cValue === '' ) { cValue = '""'; }	
	const setCookie = () => {
		try {
			const cookies = document.cookie;
			if ( !cookies.includes(cName) || !cookies.includes(cValue) ) {
		      		const date = new Date();
				date.setTime(date.getTime() + (expTime * 24 * 60 * 60 * 1000));
				const expires = "expires=" + date.toUTCString();
				document.cookie = cName + "=" + cValue + "; " + expires + "; path=/";
			} else { 
				return; 
			}	
		} catch { }
	};
	const mutationHandler = mutations => {
	if ( timer !== undefined ) { return; }
	let skip = true;
	for ( let i = 0; i < mutations.length && skip; i++ ) {
	    const { type, addedNodes, removedNodes } = mutations[i];
	    if ( type === 'attributes' ) { skip = false; }
	    for ( let j = 0; j < addedNodes.length && skip; j++ ) {
		if ( addedNodes[j].nodeType === 1 ) { skip = false; break; }
	    }
	    for ( let j = 0; j < removedNodes.length && skip; j++ ) {
		if ( removedNodes[j].nodeType === 1 ) { skip = false; break; }
	    }
	}
	if ( skip ) { return; }
	timer = self.requestIdleCallback(setCookie, { timeout: 10 });
	};
	const start = ( ) => {
	setCookie();
	if ( /\bloop\b/.test(behavior) === false ) { return; }
	const observer = new MutationObserver(mutationHandler);
	observer.observe(document.documentElement, {
	    attributes: true,
	    childList: true,
	    subtree: true,
	});
	};
	if ( document.readyState !== 'complete' && /\bcomplete\b/.test(behavior) ) {
	self.addEventListener('load', start, { once: true });
	} else if ( document.readyState !== 'loading' || /\basap\b/.test(behavior) ) {
	start(); 
	} else {
	self.addEventListener('DOMContentLoaded', start, { once: true });
	}	
}
   

@peace2000

[uBlock-user]

@peace2000 I made a mistake with asap implementation please try the previous scriptlet I modified again. If it still doesn't work, then I will change timeout value to 5.

[uBlock-user]

8

Third parameter is cookie expiry time, so it has nothing to do with race condition.

[peace2000]

Oh ok.

Tested now, both work now just fine, no race-condition.

Btw I noticed a strange thing: I cannot set any cookies on https://www.google.fi/ if I'm using Google Chrome... Do you have any idea why?

[uBlock-user]

asap version has now been added to uBO-Scriptlets repository.

Btw I noticed a strange thing: I cannot set any cookies on https://www.google.fi/ if I'm using Google Chrome... Do you have any idea why?

I don't have Chrome installed so cannot tell.

[peace2000]

Ok scrap my previous comment concerning google.fi, it was just a random hiccup probably, now it works.

Thanks for this scriplet!