#! /bin/sh

base=${PREFIX}/etc/cvsup
prefixes=${base}/prefixes

chmods_done=" "

ask() {
    local question default answer

    question=$1
    default=$2
    if [ -z "${PACKAGE_BUILDING}" ]; then
	read -p "${question} [${default}]? " answer
    fi
    if [ x${answer} = x ]; then
	answer=${default}
    fi
    echo ${answer}
}

yesno() {
    local dflt question answer

    question=$1
    dflt=$2
    while :; do
	answer=$(ask "${question}" "${dflt}")
	case "${answer}" in
	[Yy]*)		return 0;;
	[Nn]*)		return 1;;
	esac
	echo "Please answer yes or no."
    done
}

install_links() {
    local link dir subdir path

    while [ $# -ge 3 ]; do
	link=$1
	dir=$2
	subdir=$3
	echo "  Linking ${link} -> ${dir}"
	ln -sf ${dir} ${prefixes}/${link} || exit
	if [ "x${dir}" != "xSKIP" -a "x${dir}" != "x.." ]; then
	    if [ "x${subdir}" = "x." ]; then
		path=${dir}
	    else
		path=${dir}/${subdir}
	    fi
	    ( cd ${prefixes} || exit
	      if [ "x${subdir}" != "x." -a -h ${path} ]; then
		cat <<EOF
"${subdir}" must be a true subdirectory of "${dir}", not a symbolic link.
Please remove the symbolic link and/or configure again using the true
directory path to "${subdir}".
EOF
		exit 1
	      fi
	      test -d ${path} || mkdir -p ${path} || exit ) || exit
	    if ! expr "${chmods_done}" : ".* ${path} " >/dev/null 2>&1; then
		echo -n "  Fixing ownerships and modes in ${path} ..."
		( chdir ${prefixes} && \
		  chown -R ${cuser}:${cgroup} ${path} && \
		  chmod -R a+rX ${path} ) || exit
		echo " done."
		chmods_done="${chmods_done}${path} "
	    fi
	fi
	shift 3
    done
}

make_account() {
    local u g gcos homeopt home

    u=$1
    g=$2
    gcos=$3
    homeopt=${4:+"-d $4"}

    if pw group show "${g}" >/dev/null 2>&1; then
	echo "You already have a group \"${g}\", so I will use it."
    else
	echo "You need a group \"${g}\"."
	if which -s pw && yesno "Would you like me to create it" y; then
	    pw groupadd ${g} || exit
	    echo "Done."
	else
	    echo "Please create it, and try again."
	    if ! grep -q "^${u}:" /etc/passwd; then
		echo "While you're at it, please create a user \"${u}\" too,"
		echo "with a default group of \"${g}\"."
	    fi
	    exit 1
	fi
    fi
    
    if pw user show "${u}" >/dev/null 2>&1; then
	echo "You already have a user \"${u}\", so I will use it."
    else
	echo "You need a user \"${u}\"."
	if which -s pw && yesno "Would you like me to create it" y; then
	    pw useradd ${u} -g ${g} -h - ${homeopt} \
		-s /nonexistent -c "${gcos}" || exit
	    echo "Done."
	else
	    echo "Please create it, and try again."
	    exit 1
	fi
    fi

    if [ x"$homeopt" = x ]; then
	eval home=~${u}
	if [ ! -d "${home}" ]; then
	    if yesno \
		"Would you like me to create ${u}'s home directory (${home})" y
	    then
		mkdir -p ${home}/.cvsup || exit
		touch ${home}/.cvsup/auth || exit
		chown -R ${u}:${g} ${home} || exit
		chmod -R go= ${home} || exit
	    else
		echo "Please create it, and try again."
		exit 1
	    fi
	fi
    fi
}

case $2 in

POST-INSTALL)
    . ${base}/config.sh || exit

    if which -s pw && which -s lockf; then
	:
    else
	cat <<EOF

This system looks like a pre-2.2 version of FreeBSD.  I see that it
is missing the "lockf" and/or "pw" utilities.  I need these utilities.
Please get them and install them, and try again.  You can get the
sources from:

  ftp://ftp.freebsd.org/pub/FreeBSD/FreeBSD-current/src/usr.bin/lockf.tar.gz
  ftp://ftp.freebsd.org/pub/FreeBSD/FreeBSD-current/src/usr.sbin/pw.tar.gz

EOF
	exit 1
    fi

    echo ""
    make_account ${user} ${group} "CVSup Daemon" "/nonexistent"
    make_account ${cuser} ${cgroup} "CVSup Client"

    echo "Fixing ownerships and modes in \"${base}\"."
    chown -R root:wheel ${base}
    test -d ${base}/sup || mkdir -p ${base}/sup
    test -d ${base}/sup.client || mkdir -p ${base}/sup.client
    chown -R ${cuser}:${cgroup} ${base}/sup ${base}/sup.client
    chmod -R go=u-w ${base}

    echo "Setting up links and directories for distributions."
    test -d ${prefixes} || mkdir ${prefixes} || exit
    install_links ${distribs}

    echo ""
    if grep -q "^[^#]*${facility}.*/var/log/cvsupd.log" /etc/syslog.conf; then
	echo -n "It looks like you already have some logging set up, so I "
	echo "will use it."
    else
	if yesno "Would you like me to set up the syslog logging" y; then
	    echo "Setting up server logging in \"/etc/syslog.conf\"."
	    cat <<EOF >>/etc/syslog.conf
!cvsupd
${facility}.info					/var/log/cvsupd.log
EOF

	    if [ ! -f /var/log/cvsupd.log ]; then
		echo "Creating \"/var/log/cvsupd.log\"."
		cp /dev/null /var/log/cvsupd.log
	    fi

	    if [ -f /var/run/syslog.pid ]; then
		echo "Giving syslogd a kick in the pants."
		kill -HUP $(cat /var/run/syslog.pid)
	    fi

	    echo "Adding cvsup and cvsupd log entry to \"/etc/newsyslog.conf\"."
	    cat <<EOF >>/etc/newsyslog.conf
/var/log/cvsup.log			664  7    *    24    -
/var/log/cvsupd.log			664  7    *    24    Z
EOF
	    echo "Done."
	else
	    cat <<EOF
OK, please remember to do it yourself.  You should log "${facility}.info"
to "/var/log/cvsupd.log".  Don't forget to add an entry to
"/etc/newsyslog.conf".
EOF
	fi
    fi

    echo ""
    if grep -q "^[^#]*${base}/update\.sh" /etc/crontab; then
	echo "It looks like your crontab is already set up, so I'll use that."
    else
	if [ ${interval} -eq 1 ]; then
	    updstr="hourly updates"
	else
	    updstr="updates every ${interval} hours"
	fi
	if yesno "Would you like me to set up your crontab for ${updstr}" y
	then
	    echo "Scheduling ${updstr} in \"/etc/crontab\"."
	    delay=5
	    now=$(date "+%s")
	    start=$((${now} + ${delay}*60))
	    hh=$(date -r ${start} "+%H")
	    mm=$(date -r ${start} "+%M")
	    h=$((${hh}))
	    m=$((${mm}))
	    if [ ${interval} -eq 1 ]; then
		hstr="*"
	    else
		h0=$((${h} % ${interval}))
		if [ ${interval} -eq 24 ]; then
		    hstr=${h0}
		else
		    h1=$((${h0} + 24 - ${interval}))
		    hstr=${h0}-${h1}/${interval}
		fi
	    fi
	    cat <<EOF >>/etc/crontab
${m}	${hstr}	*	*	*	root	${base}/update.sh
EOF
	    cat <<EOF
Done.  The first update will be ${delay} minutes from now, at ${hh}:${mm}.
The cvsupd server will be started automatically after the first update,
and whenever you reboot.
EOF
	else
	    cat <<EOF
OK, please remember to do it yourself.  The crontab entry should run
"${base}/update.sh" as root.
EOF
	fi
    fi

    echo ""
    echo "You are now a FreeBSD mirror site."
    ;;
esac