CGI: I am interested in CGI tutorials for Gemini applications. I have basic knowledge but need some best practice tutorials. maybe to get more insights on common pitfalls. would be very interested in getting some hints. thankx

Posted in: s/Gemini

🚀 mimas2AC

Mar 26 · 8 weeks ago

10 Comments ↓

🐝 mifuyne · Mar 27 at 00:43:

Maybe you'll find this useful? It does have a couple of examples: a really basic hello world script, and a version of it that requests user input.

— https://tilde.team/wiki/gemini-cgi

There are other cgi powered capsules that have their source code available for perusal. The one I know off the top of my head is Astrobotany:

— Astrobotany on Github

Hope that helps some!

🚀 stack · Mar 27 at 02:57:

First, get an account with CGI privileges. There is not much to CGI: your script is invoked with a few environment variables set. You can read them, then generate a gemini-legal response. For instance, this script will dump the environment for your perusal:

— stack.tilde.cafe/cgi-bin/env.sh

The script executed is:

🚀 stack · Mar 27 at 03:00:

Sorry, the correct URL for the env.sh script is:

— tilde.cafe/~stack/cgi_bin/env.sh

🚀 stack · Mar 27 at 03:05:

If you hit that script with a client certificate attached, you will see the certificate info as well! That is how you can track sessions or whatever.

🐝 mifuyne · Mar 27 at 03:53:

That's neat! Thanks for this 🙂 I've been pondering making a CGI script too so being able to peek behind the curtains like this helps.

🍀 gritty · Mar 27 at 23:57:

— HOWTO

i have some examples on my HOWTO

🐐 satch · Mar 28 at 02:19:

See the Skylab misfin client source for a pretty complex CGI gemini application:

— Skylab

— Skylab on Sourcehut

🚀 mimas2AC [OP] · Mar 28 at 14:02:

Thanks for the tip to look around on GitHub, Sourcehut or similar for Gemini CGI scripts applications. I didn't have that on my screen. Thanks for that

🚀 stack · Mar 28 at 17:01:

The main differences between Gemini and http cgis are:

you output a gemini response;

html is not used for output;

client certificate hash may be used to identify clients.

Keeping that in mind, any cgi tutorial is useful (not just gemini)

🐧 pytat0 · Apr 17 at 11:33:

— https://youtu.be/9Anh0sNUCY4?feature=shared

— https://youtu.be/33IYTFoeOrc?feature=shared