#! /usr/bin/ruby
require "socket"
require "cgi"
# setup server
server = TCPServer.new 3700 # listen on non-standard port
puts "server started"
# listen for client input
loop {
Thread.start(server.accept) { |client|
# PROCESS DATA #
time = Time.now.strftime("%Y-%B-%d %H:%M:%S")
input = client.gets.match /post=(\S+)/
# skip if empty
msg = ""
if input
msg = CGI.unescape(input[1]).strip
end
unless msg.empty?
# replace all malicious parts of post
g_msg = " " + msg.gsub("\n", "\n ")
h_msg = msg.gsub("&", "&").gsub("<", "<").gsub(">", ">")
# gemini #
f = File.open "/home/de_alchmst/public_gemini/guestbook/index.gmi", "r"
contents = f.read
f.close
parts = contents.split "\n``` entries"
contents = parts[0] + "\n``` entries\n" + "---------#{time}---------\n"+\
g_msg + "\n" + parts[1]
f = File.open "/home/de_alchmst/public_gemini/guestbook/index.gmi", "w"
f.write contents
f.close
# web #
f = File.open "/home/de_alchmst/public_html/guestbook/index.html", "r"
contents = f.read
f.close
parts = contents.split ""
contents = parts[0] + "\n" + \
"" + \
"#{time}
" + h_msg + "" + \
parts[1]
f = File.open "/home/de_alchmst/public_html/guestbook/index.html", "w"
f.write contents
f.close
end
# send redirect back to regular page
client.puts <<~EOF
HTTP/1.1 302 Found
Location: https://ctrl-c.club/~de_alchmst/guestbook
Content-Type: text/html
Content-Length: 230
Date: Sat, 18 May 2024 10:00:00 GMT
Server: Apache/2.4.41 (Ubuntu)
Sample Page
if you are not redirected automatically, click here
EOF
# close connection
client.close
}
}