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#!/bin/sh -x
set -euf
main() {
if [ $# -ne 1 ]; then
usage
exit 1
fi
TINCDIR=$1
HOSTN=$(cat $TINCDIR/tinc.conf | awk '/Name ?=/ {gsub(/Name ?= ?/, ""); print}')
NICK="${HOSTN}_$(head /dev/urandom | tr -dc "0123456789" | head -c3)"
IRCCHANNEL=${IRCCHANNEL:-"#krebs_incoming"}
IRCSERVER=${IRCSERVER:-"irc.freenode.net"}
IRCPORT=${IRCPORT:-6667}
test -z ${HOSTSDIR+x} && find_hostdir
test -z ${TELNET+x} && find_telnet
( echo "NICK $NICK";
echo "USER $NICK $IRCSERVER bla : $NICK";
echo "JOIN $IRCCHANNEL";
sleep 23;
echo "PRIVMSG $IRCCHANNEL : This is $HOSTN";
sed "s/^\(.*\)/PRIVMSG $IRCCHANNEL : \1/" $HOSTSDIR/$HOSTN;
sleep 5; ) | $TELNET $IRCSERVER $IRCPORT
}
exists() {
type "$1" >/dev/null 2>/dev/null;
}
find_hostdir() {
if [ -e "$TINCDIR/hosts" ]; then
HOSTSDIR="$TINCDIR/hosts"
else
echo 'cannot find hostsdir of tinc, please specify with HOSTSDIR=...'
exit 1
fi
}
find_telnet() {
if exists telnet >/dev/null; then
TELNET=$(command -v telnet)
else
echo "cannot find telnet binary, please install telnet-client"
echo "bailing out!"
exit 1
fi
}
usage() {
echo './propagate-config $TINCDIR'
echo 'If the hosts dir is not in $TINC_DIR you have to specify it using HOSTSDIR=$path_to_hostsdir ./propagate $TINCDIR.'
}
main "$@"
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