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Lemmy: experimental Acme program to access Lemmy (www.olowe.co)

submitted 2 years ago* (last edited 2 years ago) by otl to c/plan9

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Lemmy uses the packages olowe.co/lemmy (source), which provides a io/fs filesystem interface to a Lemmy instance, and 9fans.net/go/acme to interact with acme. What you get is an Acme Mail inspired program for Lemmy. As you can see, it's a work in progress!

But it's been fun so far. Sorry that this isn't running on Plan 9 (running on OpenBSD). I'm on the road at the moment and don't have a way to connect to a server right now!

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[–] otl 2 points 2 years ago (1 children)

Since you’re using 9fans packages, I assume that this works with plan9port though, isn’t that right?

Yes this is running on plan9port on OpenBSD.

I was wondering about porting some of these things to native Plan 9 as well

That would be cool! And you wouldn't need to worry about the package 9fans.net/go/plan9 since that's all provided by the OS already.

Another idea I had was some kind of adapter to serve a io/fs filesystem over 9P if that makes sense?

[–] alchemist 3 points 2 years ago

I think that anything in Plan 9 that involves a filesystem makes total sense. It's just too easy to just make a thin layer that works with files.

For instance, I was once building a GUI for a project in Plan 9 C, that communicated with the remote server using REST requests. All I had to do is use the webfs filesystem interface. It works somewhat like this:

You open /mnt/web/clone for reading and keep it open. Reading that file gives you a handle number for your connections.
Open /mnt/web/%d/ctl (%d being the handle number) for writing. Then you write a few textual information for your request, e.g. request get for the method, url https://my-website.com/ for URL, headers blabla for each header parameter, etc.
If you're sending data, set the contenttype through the ctl file as above, then write the request body to /mnt/web/%d/postbody.
Open /mnt/web/%d/body for reading. This action performs the actual request, and may take some time. Nevertheless, for your program, it is simply a blocking file operation.

I think this illustrates how simple Plan 9 can be, so I think it is possible to port most, if not every part of 9fans.net libraries to native Plan 9 by reimplementing a few functions to do file operations instead of using the plan9port binaries.