ft_irc

What is it?

Create our own server that will be able to receive client connexions. In our case, netcat and irssi connexions. With this server we will be able to communicate with different users.

How does it work?

Launching the server

./ircserv [port number] [password]

For example ./ircserv 6667 pwd

Launching a netcat client

nc -C 127.0.0.1 6667

We used the -C option since our reply messages end with \r\n as defined in the RFC 2812 standards.

We used 127.0.0.1 since our server is launched in localhost.

We used 6667 since it is the port, we specified, to our server to listen to.

You will then need to do the authentification process

pass pwd

user lea 0 * :lea

nick lea

Our user is now connected and known in the server as lea.

To understand more abour the authentification process please look here.

Launching an irssi client

irssi

/connect 127.0.0.1 6667 pwd

The authentification process is automatically done by irssi.

Your user will be known in the server as plop.

Commands we implemented

We implemented 24 commands.

Server related commands

DIE
INFO
MOTD
PING
PONG
QUIT
SERVICES
TIME
VERSION

User related commands

USER
KILL
MODE (B, i, o, r, s)
NICK
OPER
PASS
WHO
WHOIS

Messages commands

PRIVMSG (msg on irssi)
NOTICE

Bonus

First bonus : file transfer

If you choose irssi as your reference client, it is automatically handled by irssi.

Sending file to another client

/dcc send [nickname of user] [path of the file between quotes]

For example /dcc send plop_ "Documents/test.txt"

Receiving file from a client

/dcc get [nickname of user][name of the file between quotes]

For example /dcc get plop "test.text"

DCC is handled as a PRIVMSG.

Second bonus : implement a simple bot

We implemented it as a simple client using the command services.

Our bot sends you some quote with command QUOTE and can give you the time with command TIME.

It is handled as a private conversation between the user and the bot.

./ircbot [hostname] [password]

llescure/42_ft_irc