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bdrewery/poudriere-irc.sh

Last active Oct 19, 2018
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IRC bot written in POSIX Shell using netcat
#! /bin/sh
#
# Copyright (c) 2013 Bryan Drewery <bdrewery@FreeBSD.org>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
set -ef
NICK="poudriere"
CHANNEL="#poudriere"
SERVER="irc.sucks.net"
PORT=6667
VERSION="Poudriere build bot (https://fossil.etoilebsd.net/poudriere/)"
REALNAME="${VERSION}"
STATUS_SOCKET=/tmp/poudriere.sock
HOSTNAME="$(hostname -s)"
CTCP=$(echo -e "\001")
send() {
echo "[->] $@"
echo "$@" >> ${OUT}
}
send_ctcp_reply() {
local nick keyword msg
echo "[CTCP->] $@"
nick="$1"
keyword="$2"
shift 2
msg="$@"
notice ${nick} "${CTCP}${keyword} ${msg}${CTCP}"
}
notice() {
local nick msg
nick="$1"
shift
msg="$@"
send "NOTICE ${nick} :${msg}"
}
privmsg() {
local nick msg
nick="$1"
shift
msg="$@"
send "PRIVMSG ${nick} :${msg}"
}
handle_ctcp() {
local nick msg keyword
nick="$1"
shift
# Trim out \001
msg="${@}"
msg="${msg%${CTCP}}"
msg="${msg#${CTCP}}"
set -- "${msg}"
keyword="$1"
shift
msg="$@"
case "${keyword}" in
VERSION)
send_ctcp_reply ${nick} ${keyword} "${VERSION}"
return 0
;;
esac
}
handle_privmsg() {
local from msg nick target reply_target
from="${1#:}"
nick="${from%!*}"
target="${3}"
shift 3
msg="${@#:}"
case "${msg}" in
${CTCP}*${CTCP})
handle_ctcp ${nick} "${msg}"
return 0
;;
esac
#[<-] :nick!user@host PRIVMSG #channel :text
#[<-] :nick!user@host PRIVMSG nick :text
reply_target="${target}"
[ "${target}" = "${MYNICK}" ] && reply_target="${nick}"
echo "<${from}> ${msg}"
case "${msg}" in
"!poudriere status")
poudriere status | while read line; do
privmsg ${reply_target} "${nick}: [${HOSTNAME}] ${line}"
done
;;
*)
;;
esac
}
recv() {
echo "[<-] $@"
# [<-] PING :irc.servercentral.net
case $1 in
:*)
;;
PING)
send "PONG $2"
return 0
;;
esac
case $2 in
PRIVMSG)
handle_privmsg "$@"
return 0
;;
433) # :server 433 * test :Nickname is already in use.
send "NICK ${4}_"
return 0
;;
001) # :server 001 test :Welcome to IRC
MYNICK="$3"
send "JOIN ${CHANNEL} ${CHANNEL_KEY}"
return 0
;;
*)
;;
esac
}
poudriere_socket() {
rm -f ${STATUS_SOCKET}
nc -klU ${STATUS_SOCKET} | while read cmd mastername line; do
case "$cmd" in
status)
privmsg "${CHANNEL}" \
"[${HOSTNAME}][${mastername}] Status: ${line}"
;;
esac
done
}
OUT=$(mktemp)
# http://stackoverflow.com/a/15557994/285734
usr1_handler() {
exit
}
exit_handler() {
[ -n "${OUT}" ] && rm -f ${OUT} 2>/dev/null
# Kill children and nc(1)
kill -USR1 -$$
}
trap exit_handler EXIT INT TERM
trap usr1_handler USR1
main() {
[ -n "${PASS}" ] && send "PASS ${PASS}"
send "NICK ${NICK}"
send "USER ${NICK} localhost ${SERVER} :${REALNAME}"
# Start the listen socket for poudriere
poudriere_socket &
tail -F ${OUT} | nc ${SERVER} ${PORT} | while read raw; do
raw="${raw%$'\n'}"
raw="${raw%$'\r'}"
recv ${raw}
done
}
main
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Owner Author

@bdrewery bdrewery commented Sep 27, 2013

This is a prototype for poudriere IRC support. It will be moved to https://fossil.etoilebsd.net/poudriere/.

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@bdrewery bdrewery commented Sep 27, 2013

A root process writes to /tmp/poudriere.sock with nc(1) as well which relays the information to IRC:

echo "status ${MASTERNAME} ${status}" | nc -U /tmp/poudriere.sock
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