Is it possible to insert userscripts directly into Webview-based app's data directory? (root based)

[directentis1]

I have some Webview-based applications, and I can successfully insert the Eruda console into that application via ChromeXt hooks.

Because there is no way to navigate to the user.js files from the outside, I tried to find a way to load user.js files from the Eruda console but it also failed because the application did not declare access rights to the filesystem so it could not call file explorer.

Is there a way to load Userscripts directly into the application's Webview data directory without having to go through the Web interface?

I noticed that in the App's data - webview dir folder, Eruda.js is downloaded in the "files/" folder, while for Chrome, the userscripts are loaded into the "databases/" folder with two files "userscript" and "userscript -journal" with sqlite format.

[JingMatrix]

Currently, userscripts are stored in sqlite database, i.e., the databases/userscript file.
You may directly change it, if you feel confident.

Could you open the ChromeXt front-end via Eruda? I may change front-end so that you can jump to valid userscript urls.
Without filesystem permission, it is really quite awkward.

[directentis1]

@JingMatrix I guess I'll need to make a copy of /databases/userscript files containing the user.js files I want before editing and move them to the destination folder.

But not sure if it can load when opened in the other webview app.

Could you open the ChromeXt front-end via Eruda? I may change the front-end so that you can jump to valid userscript urls.

Can you guide me how to do that? I'm not sure if there is any option to open ChromeXt front-end with Eruda.
I just want to be able to insert some user.js files to process text, or translate text on some magazine/news apps that have webviews in them.

Without filesystem permission, it is really quite awkward.

Yes, so I think the only way is to move that userscripts file directly to the app's data folder (internal storage or sdcard) because the application has access to the filesytem granted to themselves
Or the way you mentioned is to embed the url of user.js directly into Eruda, but not sure where it will be downloaded and how it will be processed afterwards.

[directentis1]

My phone's screen record.

eruda_console_test_.mp4

[JingMatrix]

To open the front-end, try what I said in this link: #161 (comment)

Your scripts can definitely load once you edit the sqlite file properly.

My suggestion was that in the front-end, I would made an input box, through which you can jump to any url; this will then allows to intall scripts.

[JingMatrix]

Well, I have a quick solution for you!

You install a browser, say Chrome, in which you can installed scripts without any restrictions.
And then you copy the userscript database file from the browser app folder to your WebView application browser.
Of course, respect the folder path.

[directentis1]

Yes, I did that already, but for some reason the script file still doesn't load when I open the Eruda console....

[JingMatrix]

Well, here are few things to check:

1. Could you upload a screenshot of your database? Note that you should click on the Browser Data tab in sqlbrowser.
2. Did the script worked as expected in your browser (Chrome)?
3. Did you fully restart your applications? You may try reboot your phone to ensure this.

[directentis1]

1. Well, I just use Immersive Translate js as a test.
   So, it's like this:

The first 3 data fields are nothing worth discussing, but the 4th field, I checked its json file (about 8k lines, after beautifying it), but there's really nothing specially.

2. Yes, it works perfectly fine with Chrome.
3. I cleared the cache, closed the application, restarted,... but strangely it's still the same.

[JingMatrix]

It could be a problem of file permission.

1. Ensure the datebase is put in the correct folder;
2. Change the owner or permissions so that the app could access to it.