Hi Martin,
1. The extension of the file matters. Try renaming your *.sh to *.cgi -
does it work then? Do not forget to have the file marked as executable
(chmod +x) and declare a correct shebang inside it (#!/bin/sh)
How would you see it done another way? I'd be willing to adapt this if
there's a way that would be significantly more user friendly.
2. Indeed motsognir doesn't allow to access anything that is not inside
the gopher root, because... well, just because :) if something is not
inside the gopher root, then it's not supposed to be offered by gopher.
If you think it would be useful, I can add a feature that would disable
symlink resolution while performing evasion detection checks. OR - maybe
better - allow to declare a list of "gopher-served directories", where
you could declare all non-gopher-root directories that are likely to be
served via symlinks - what do you think?
Mateusz
On 04/01/2016 12:55, Martin Kukac wrote:
Hello and happy new year to all!
I have some further questions about how (and why) Motsognir works. Even
though I could send it directly to Mateusz, I'm asking here, because it
may help others in the future. I hope y'all don't mind.
1. external scripts
On my gopher server I have bash, perl and PHP scripts and the do not
behave the same way. I include all of them in the gophermap using "=",
all of them have 755 permissions, but only PHP seems to work.
To test it I placed this in the gophermap:
=test.pl
=test.sh
=test.php
All files had just a single line of code, printing "iTest.PL",
"iTest.SH" and "iTest.PHP". The resulting gophermap returned to client
only the output contained only PHP output, in /var/log/messages I found
Jan 4 12:34:47 i-logout journal: motsognir [46.13.138.74][11235]:
running server-side app '/var/gopher/test.php'
Nothing else. What am I missing? I can rewrite all scripts to PHP if I
have to, but isn't there another way?
2. directories outside GopherRoot
When using Gophernicus, I had some directories all over the filesystem
symlinked to GopherRoot and listed through gopher. Motsognir seems to
prevent this because it thinks it is evasion attempt:
Jan 4 12:50:44 i-logout journal: motsognir [46.13.138.74][11396]:
Requested resource: /software/ / Local resource: /var/gopher/software/
Jan 4 12:50:44 i-logout journal: motsognir [46.13.138.74][11396]:
Evasion check: path '/var/gopher/software/' (/var/ftp/pub/) do not seem
to belong to '/var/gopher/'
Jan 4 12:50:44 i-logout journal: motsognir [46.13.138.74][11396]:
Evasion attempt. Forbidden!
Is this necessary? I can't imagine how there could be symlinked folder
without my knowledge, so this could be probably allowed.
Thanks for the help.
Martin