Take this simple script:
Code:
#!/bin/bash
echo -e "Content-Type: text/plain\n\n"
env
echo "-------------"
id
Put it in your servers /cgi-bin/ directory as minimal.sh, make it executable, and then call it from your browser as http://localhost/cgi-bin/minimal.sh?a=b&c=d&e=ü
Example output:
Code:
SERVER_SIGNATURE=<address>Apache/2.2.4 (Linux/SUSE) Server at localhost Port 80</address>
HTTP_KEEP_ALIVE=300
HTTP_USER_AGENT=Mozilla/5.0 (X11; U; Linux i686; de; rv:1.9.0.5) Gecko/2008121300 SUSE/3.0.5-2.3 Firefox/3.0.5
SERVER_PORT=80
HTTP_HOST=localhost
DOCUMENT_ROOT=/srv/www/htdocs
HTTP_ACCEPT_CHARSET=ISO-8859-1,utf-8;q=0.7,*;q=0.7
SCRIPT_FILENAME=/srv/www/cgi-bin/minimal.sh
REQUEST_URI=/cgi-bin/minimal.sh?a=b&c=d&e=%C3%BC
SCRIPT_NAME=/cgi-bin/minimal.sh
HTTP_CONNECTION=keep-alive
REMOTE_PORT=50421
PATH=/usr/sbin:/bin:/usr/bin:/sbin
PWD=/srv/www/cgi-bin
SERVER_ADMIN=[no address given]
HTTP_ACCEPT_LANGUAGE=de-de,de;q=0.8,en-us;q=0.5,en;q=0.3
HTTP_ACCEPT=text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
REMOTE_ADDR=127.0.0.1
SHLVL=1
SERVER_NAME=localhost
SERVER_SOFTWARE=Apache/2.2.4 (Linux/SUSE)
QUERY_STRING=a=b&c=d&e=%C3%BC
SERVER_ADDR=127.0.0.1
GATEWAY_INTERFACE=CGI/1.1
SERVER_PROTOCOL=HTTP/1.1
HTTP_CACHE_CONTROL=max-age=0
HTTP_ACCEPT_ENCODING=gzip,deflate
REQUEST_METHOD=GET
_=/usr/bin/env
-------------
uid=30(wwwrun) gid=8(www) groups=8(www)
Notice the part in blue? That are the parameters for the script. The part in red? The Unicode codepoint for ü, as it was sent by my browser. If you really want to code this in bash, there are no libraries or other helpers for that kind of stuff. And you're not even tracking sessions yet.
What you'd have to do is code the login logic, authentication, authorization, and since the users should be able to run scripts, some kind of security lest you want to lose data.
