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Is there any webserver that supports CGI (not FastCGI/Rack/WSGI) and that is easy to setup? (lightweight and portable if possible, just need to copy the binary to another similar machine)
So I'll just need to put some CGI scripts there, and then when I visit that script using a browser, the script gets exectured and displayed in the browser.
OS: Linux
I've used Acme Labs' thttpd - easy to set up, fast and supports CGI.
Most recently I put it one some Raspberry Pis.
It's a single binary, when you launch it you give it the name of a config file.
uWSGI with CGI (only requires Python)
Install using:
curl http://uwsgi.it/install | bash -s cgi /tmp/uwsgi
create a setup configuration so you can run it without too many arguments, for example test.ini
[uwsgi]
http = :8081
http-modifier1 = 9
#uid =
#gid =
check-static = ./www
static-skip-ext = .php
static-skip-ext = .rb
static-skip-ext = .py
static-skip-ext = .lua
static-index = index.html
async = 16
ugreen = true
socket = 127.0.0.1:9000
cgi = ./cgi
cgi-allowed-ext = .php
cgi-allowed-ext = .rb
cgi-allowed-ext = .py
cgi-allowed-ext = .lua
cgi-index = index.rb
create a testing script, for example ./cgi/test.rb
#!/usr/bin/env ruby
require 'cgi'
cgi = CGI.new
puts cgi.header
puts '<html><body>ENV: <ol>'
ENV.each do |k,v|
puts "<li><b>#{k}</b> #{v}</li>"
end
puts '</ol>POST: <ol>'
cgi.params.each do |k,v|
puts "<li><b>#{k}</b> #{v}</li>"
end
puts '</ol></body></html>'
start the server using:
./uwsgi test.ini
test it using browser or curl:
curl -d 'test2=2' localhost:8081/test.rb?test=1
curl http://.. | bash allows anyone in your local network to install arbitrary software on your machine.
https where possible, or better yet, download the script, examine it first, before executing with the shell.
busybox can be built with http and cgi modules.
Let me quote the project's description:
BusyBox combines tiny versions of many common UNIX utilities into a single small executable. It provides replacements for most of the utilities you usually find in GNU fileutils, shellutils, etc. The utilities in BusyBox generally have fewer options than their full-featured GNU cousins; however, the options that are included provide the expected functionality and behave very much like their GNU counterparts. BusyBox provides a fairly complete environment for any small or embedded system.
BusyBox has been written with size-optimization and limited resources in mind. It is also extremely modular so you can easily include or exclude commands (or features) at compile time. This makes it easy to customize your embedded systems. To create a working system, just add some device nodes in /dev, a few configuration files in /etc, and a Linux kernel.
I recommend ncat --exec. See https://nmap.org/ncat/guide/ncat-exec.html
Here is an example:
ncat --keep-open -p 5555 -l --exec /bin/bash
You can then make multiple interactive connections to a shell (or any other linux program that interacts through stdin/stdout) using telnet or nc:
$ nc localhost 5555
echo hi
hi
nc gains CGI support in some version? I don't think it has because nc is supposed to be used as a bare-bone user interface to sockets.