Guile web server example serving static files

[Zelphir Kaltstahl <zelphirkaltstahl@posteo.de>]

Hello Guile Users!

I finally managed to create an example for using Guile's web server and
serving static files. A rather silly bug kept me for a few days from
making progress, but finally today I fixed it.

I tried to implement some security checks about the path of the
requested static assets. If anyone wants to look at it and point out
issues with it, I will try to fix it, or you could make a pull request.
If there are any other issues, it would also be great to know them : )

Here is the code in my repository:

https://notabug.org/ZelphirKaltstahl/guile-examples/src/65ba7cead2983f1ceb8aa2d4eedfe37734e5ca56/web-development/example-03-serve-static-assets

I tried to comment most stuff, so that the code can be understood more
easily.

And here is a pointer to the path security stuff:

https://notabug.org/ZelphirKaltstahl/guile-examples/src/65ba7cead2983f1ceb8aa2d4eedfe37734e5ca56/web-development/example-03-serve-static-assets/web-path-handling.scm#L50

(Perhaps I overlooked something fundamental with regard to safe path
handling?)

So I guess I can soon start developing another example, perhaps already
a blog, which makes use of all the code : )

I have not yet made use of Guile's sendfile procedure and keyboard
interrupt is not yet caught.

Regards,
Zelphir

-- 
repositories: https://notabug.org/ZelphirKaltstahl