How to register AriaNg as a magnet protocol handler?

qBitTorrent web UI has an option to register as a protocol handler for magnet links.

After it is registered, clicking on a magnet link in your browser automatically opens Add URL dialog.

Does AriaNg support that?

If not, is there any chance it could be added?

This is what I have in mind (screenshot is from Firefox):

Please check here for implementation details: https://developer.mozilla.org/en-US/docs/Web/API/Navigator/registerProtocolHandler/Web-based_protocol_handlers#Registering

The only obstacle I see is the way adding a new download is implemented at the moment. You should have a GET-able URL which receives link as a parameter. For example:

https://core.levicki.lan:8001/#!/new?link=%s

Where %s is a magnet link placeholder.

[retardTonic]

For anyone interested, I have managed to find a way to register a protocol handler in Firefox using brute force, bypassing all sanity checks.

Spoiler

1. Open Browser console (Ctrl+Shift+J)
2. Type in the following (replace <URL> with URL and <AriaNg> with preferred handler name):

var handler = Cc["@mozilla.org/uriloader/web-handler-app;1"].createInstance(Ci.nsIWebHandlerApp);
handler.name = "<AriaNg>";
handler.uriTemplate = "javascript:(function(){window.location.href='<URL>/#!/new/task?url='+btoa('%s').replace('+', '-').replace('/', '_')})()";
var handlerInfo = Cc["@mozilla.org/uriloader/external-protocol-service;1"].getService(Ci.nsIExternalProtocolService).getProtocolHandlerInfo("magnet");
handlerInfo.possibleApplicationHandlers.appendElement(handler);
handlerInfo.alwaysAskBeforeHandling = true;
Cc["@mozilla.org/uriloader/handler-service;1"].getService(Ci.nsIHandlerService).store(handlerInfo);

However, internal API might change at any time, and I am not liable to any damage this snippet may cause. AriaNg still needs to be hosted on a server, as the browser prohibits accessing local files from DOM in any way.

References

mozilla/gecko-dev@1f1b24c/browser/components/protocolhandler/WebProtocolHandlerRegistrar.jsm

Still, implementing unsafe URLs or just using an extension/bookmarklet would be the proper way.

[levicki]

For anyone interested, I have managed to find a way to register a protocol handler in Firefox using brute force, bypassing all sanity checks.

Interesting approach. Is there a way to do similar thing in Chrome perhaps?

Still, implementing unsafe URLs or just using an extension/bookmarklet would be the proper way.

I’d prefer if AriaNg exposed an API for this purpose which is compliant with normal ways browsers handle this.

In the meantime I am using Chrome extension edcakfpjaobkpdfpicldlccdffkhpbfk.