webextension | Alpheios Browser Extensions

Well guys, I have this script that adds the product to the cart, but I need it to work as quickly as possible, currently it’s working for about 19 seconds if you run this code, of course there are a number of factors that should be taken into account consideration, one of them is the response time of the website and everything ... Well, I took almost all the resources on this site to load faster

https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/webRequest/ResourceType

But I did not remove the script loading (javascript), but I want to remove all the javascript from the page except what is embedded in the html, that is, I want to prevent all references to javascript files except the javascript that is inserted in the html, and I would like to know if it is possible to disable html text loading, this is my code:

Is it possible for a WebExtension to override the IP address of a server, or to modify/intercept DNS requests or override the DNS cache? I'm trying to code a WebExtension that provides browsers with the same functionality as cURL's --resolve.

Specifically, to:

• connect to a different IP than that listed in DNS
• add entries for particular NXDOMAIN that the user wishes to resolve as if it existed
• "resolve" particular entries offline
• cache or pin DNS entries in a software-defined way in preparation for a known upcoming DNS poisoning attack

In short: to simulate the effect of a hosts file, but without administrative privileges / messing with the rest of the system.

I need a Chrome extension to run on every domain except for one. It runs everywhere with this:

My problem is that i can't get my textfields with document.getContent() and document.getContents(). So I tried to use XPath for selecting the objects, it works but i can't copy the object and add it again.

For example:

I also tried to make a own object but this also don't worked for me, because it wasn't accepted as an JAXB Object.

This is my code:

I'm trying to encrypt something in a webextension with SubtleCrypto and decrypt it in flutter with cryptography. I want to use a password to encrypt a message, send it to a app and decrypt it with the same password. For this I use AES GCM with pbkdf2

I was able to find an encryption snippet on the Mozilla documentation page. However, I struggle decrypting it in flutter.

I'm also having problems with terminology. SubtleCrypto uses iv, salt and tags while flutter cryptography uses nonce and mac.

Javascript code:

I like to use the windows.WindowState API, but got the error "windows is not defined".

I am able to get the chains well if I use browser.webRequest.getSecurityInfo inside a browser.webRequest.onHeadersReceived listener during a regular https connection, but if the connection failed due to a security issue such as an expired certificate then onHeadersReceived never gets triggered.
If I accept the bad certificate then onHeadersReceived does get triggered, but the security info does not contain the bad certificate.

I tried looking at browser.webRequest.onErrorOccurred and browser.webRequest.onCompleted but had no luck in getting getSecurityInfo to work in those contexts

I know the browser itself has this information because you can get it to display the certificate chain in the built in viewer (which can display arbitrary certificates in the format of url_encode(base64_encode(DER_certificate))

Does any one know how can I get either nice certificate objects or at least the DER bytes (encoded or not, it doesn't matter) ?

New to web extension development & I'm trying this example. However when I run this extension it does not trigger the listener.

This is the manifest file.

I have a web site made by Python Django.

And I want to check if a visitor's chrome browser's chrome extension is installed.

I found some information, it looks possible with Javascript.

https://www.python2.net/questions-993829.htm

https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/management/getAll

They say you can get all installed chrome extensions by writing it like this.

chrome.management.getAll() or brower.management.getAll()

But When I tried that "chrome.management" is not defined.

Is it need to add library to use chrome.management?

I read the API documents, But I didn't know How can I to do.

Please teach me if you know about this. Thank you.