[FireMonkey] KeepChatGPT incompatibility

[Iey4iej3]

The userscript KeepChatGPT does not work under FireMonkey. It works under ViolentMonkey. The console log does not seem to contain any useful info.

[erosman]

1

There is an error.

TypeError: can't access property "slice", GM_info.script.namespace is null
line 546

The script uses GM_info.script.namespace which is not supported in FireMonkey and is set to null.

However, the use of above is simply for obfuscation.

GM_info.script.namespace.slice(33, 34)  // result: a
GM_info.script.namespace.slice(28, 29)  // result: e

var u = `/api/${GM_info.script.namespace.slice(33, 34)}uth/s${GM_info.script.namespace.slice(28, 29)}ssion`;
// result:
// /api/+ a + uth/s + e + ssion
// /api/auth/session

You can add var u = '/api/auth/session'; in line 549 and check again:

    var u = `/api/${GM_info.script.namespace.slice(33, 34)}uth/s${GM_info.script.namespace.slice(28, 29)}ssion`;
    var symbol1_class = 'nav>a.flex';
    var symbol2_class = 'button.justify-center';
    var u = '/api/auth/session';
})();

2

Violentmonkey by default injects into page context. Check by setting the default to content and see if the script still works?

[Iey4iej3]

This userscript uses a lot of methods unavailable in page context under FireMonkey such as GM_setValue. What are currently supported about GM_info.script?

[erosman]

You are right about page. I updated the reply accordingly.

What are currently supported about GM_info.script?

FireMonkey Help: GM info lists the available data.

The scripts uses GM_info.script.namespace in other places too. You can also set it globally on top of the script (line 57) by:

(function() {
    'use strict';
    GM_info.script.namespace = 'https://github.com/xcanwin/KeepChatGPT/';
    var $ = (Selector, el) => (el || document).querySelector(Selector);
    ...

[Iey4iej3]

The userscript works under ViolentMonkey even if it is injected into content context. Other usages of GM_info.script.namespace are not essential to key functions of this script.

Look at the method https://github.com/xcanwin/KeepChatGPT/blob/cb039a1dcfe664c128780c0611427ea259e77fe0/KeepChatGPT.user.js#L525

It is intercepting the method fetch. If I want to make it work under FireMonkey, I should replace fetch by unsafeWindow.fetch in https://github.com/xcanwin/KeepChatGPT/blob/cb039a1dcfe664c128780c0611427ea259e77fe0/KeepChatGPT.user.js#L527 , and add a layer of exportFunction to https://github.com/xcanwin/KeepChatGPT/blob/cb039a1dcfe664c128780c0611427ea259e77fe0/KeepChatGPT.user.js#L530

However, this is not necessary under ViolentMonkey even injected into content. What leads to this difference between VM and FM?

[erosman]

However, this is not necessary under ViolentMonkey even injected into content. What leads to this difference between VM and FM?

There are differences between FM & GM|TM|VM in manifest V2. There are also differences between GM & TM & VM. Please note https://github.com/erosman/support/issues/429#issuecomment-1512992456

[Iey4iej3]

However, this is not necessary under ViolentMonkey even injected into content. What leads to this difference between VM and FM?

There are differences between FM & GM|TM|VM in manifest V2. There are also differences between GM & TM & VM. Please note #429 (comment)

This does not seem to explain why it is not needed to use exportFunction under VM even if injected into content context.

[erosman]

This does not seem to explain why it is not needed to use exportFunction under VM even if injected into content context.

FireMonkey injects into the dedicated & isolated userScripts context while GM|TM|VM inject into semi-privileged content context.

Firefox created the isolated userScripts context as a security measure for injecting userscripts. Due to the isolation, functions has to be exported.

See also; Xray Vision & Sharing objects with page scripts

[erosman]

Have you had any feedback from the script developers? I can work on it if I know what the issue is.

[Iey4iej3]

The only thing that could be worked on from the side of FireMonkey is the one that you mentioned earlier https://github.com/erosman/support/issues/551#issuecomment-1518506453

Other things are about Xvision (their code has been modified a lot, and I am no longer using that userscript), and they seem to show no interest in the FireMonkey compatibility.