moth/packages/rlyeh/service/rlyeh/rlyeh-ctf

#! /bin/sh

STATE=$CTF_BASE/state

echo -n "Team hash: "
read -r teamhash

if ! [ -f $STATE/teams/names/"$teamhash" ]; then
    echo 'No such team.'
    exit
fi

cd $STATE/rlyeh

if [ -f $teamhash ]; then
    now=$(date +%s)
    ts=$(stat -c %Y $teamhash)
    d=$(expr $now - $ts)
    if [ $d -lt 60 ]; then
        echo 'You are trying to connect too fast.'
        exit
    fi
else
    echo 1 > $teamhash
fi
read level < $teamhash

(
    if ! flock -n 8; then
        echo 'Your team is already logged in.'
        exit
    fi

    echo "Your team is on level $level."
    echo

    if setuidgid nobody rlyeh $level; then
        arc4 $CTF_BASE/packages/rlyeh/tokens/rlyeh/enc.key < $$CTF_BASE/state/rlyeh/tokens.txt
        echo
        expr $level + 1 > $teamhash
    else
	touch $teamhash
    fi
) 8<$teamhash