#! /bin/sh
## Shit-simple script to supply the "privmsg <recipient>" of IRC typein, and
## keep the connection alive. Pipe this thru "nc -v -w 5 irc-server port".
## Note that this mechanism makes the script easy to debug without being live,
## since it just echoes everything bound for the server.
## if you want autologin-type stuff, construct some appropriate files and
## shovel them in using the "<" mechanism.

# magic arg: if "tick", do keepalive process instead of main loop
if test "$1" = "tick" ; then
# ignore most signals; the parent will nuke the kid
# doesn't stop ^Z, of course.
trap '' 1 2 3 13 14 15 16
while true ; do
sleep 60
echo "PONG !"
done
fi

# top level: fire ourselves off as the keepalive process, and keep track of it
sh $0 tick &
ircpp=$!
echo "[Keepalive: $ircpp]" >&2
# catch our own batch of signals: hup int quit pipe alrm term urg
trap 'kill -9 $ircpp ; exit 0' 1 2 3 13 14 15 16
sleep 2

sender=''
savecmd=''

# the big honkin' loop...
while read xx yy ; do
case "${xx}" in
# blank line: do nothing
"")
continue
;;
# new channel or recipient; if bare ">", we're back to raw literal mode.
">")
if test "${yy}" ; then
sender="privmsg ${yy} :"
else
sender=''
fi
continue
;;
# send crud from a file, one line per second. Can you say "skr1pt kidz"??
# *Note: uses current "recipient" if set.
"<")
if test -f "${yy}" ; then
( while read zz ; do
sleep 1
echo "${sender}${zz}"
done ) < "$yy"
echo "[done]" >&2
else
echo "[File $yy not found]" >&2
fi
continue
;;
# do and save a single command, for quick repeat
"/")
if test "${yy}" ; then
savecmd="${yy}"
fi
echo "${savecmd}"
;;
# default case goes to recipient, just like always
*)
echo "${sender}${xx} ${yy}"
continue
;;
esac
done

# parting shot, if you want it
echo "quit :Bye all!"
kill -9 $ircpp
exit 0