#! /bin/sh

base=${PREFIX}/etc/cvsup
variables="user group cuser cgroup host host_crypto interval \
    maxclients facility distribs"

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
}

ask_distrib() {
    local desc dflt link dir subdir

    link=$1
    dflt=$2
    subdir=$3
    desc=$4
    if yesno "Do you wish to mirror the ${desc}" y; then
	if [ "${subdir}" != "." ]; then
	    cat <<EOF
Note: the location for this must match "*/${subdir}", and
"${subdir}" must be a true subdirectory, not a symbolic link.
EOF
	fi
	while :; do
	    dir=$(ask "Where would you like to put it" ${dflt})
	    case ${dir} in
	    /*)	;;
	    *)	echo "Please specify an absolute pathname."
		continue;;
	    esac
	    if [ "${subdir}" = "." ]; then
		break
	    fi
	    dir=$(expr "${dir}" : "\(.*\)/${subdir}\$")
	    if [ "x${dir}" != x ]; then
		break
	    fi
	    echo "The location must match \"*/${subdir}\""
	done
	distribs="${distribs} ${link} ${dir} ${subdir}"
	return 0
    else
	distribs="${distribs} ${link} SKIP ${subdir}"
	return 1
    fi
}

canonicalize() {
    echo $1 | tr "[:upper:]" "[:lower:]"
}

#------------------------------------------------------------------------------

cat <<EOF
I am going to ask you a few questions so that I can set up your
FreeBSD mirror configuration.  Every question has a [default]
answer.  To accept the default, just press ENTER.

At this point, I am just gathering information.  I will not touch
your system until you type "make install".

EOF

if [ x${USA_RESIDENT} = xYES ]; then
    dflt_domestic=y
else
    dflt_domestic=n
fi
if yesno "Is this host in the USA or Canada" ${dflt_domestic}; then
    domestic=yes
else
    domestic=no
fi

host=$(ask "Master site for your non-crypto updates" cvsup-master.freebsd.org)
if [ ${domestic} = yes ]; then
    dflt_host_crypto=${host}
else
    dflt_host_crypto=cvsup.internat.freebsd.org
fi

cat <<EOF

If you are not planning to mirror the crypto files, just accept
the default answer for the next question.

EOF
host_crypto=$(ask "Master site for your crypto updates" ${dflt_host_crypto})

host=$(canonicalize ${host})
host_crypto=$(canonicalize ${host_crypto})

while :; do
    interval=$(ask "How many hours between updates of your files" 1)
    case ${interval} in
    1|2|3|4|6|8|12|24)	break;;
    esac
    echo "Please answer 1, 2, 3, 4, 6, 8, 12, or 24"
done

cat <<EOF

Now you must decide which sets of files you wish to make available
from your mirror site.  You can choose any combination, and you
can put each set anywhere you want to on your disks.  Although each
set is optional, we strongly encourage every mirror site to carry
at least the main source tree.

EOF

distribs="distrib.self .. ."
ask_distrib FreeBSD.cvs /home/ncvs . \
    "main source tree, except crypto code"
ask_distrib FreeBSD-crypto.cvs /home/ncvs . \
    "crypto code"
ask_distrib FreeBSD-www.current /usr/local/www . \
    "installed World Wide Web data"
ask_distrib FreeBSD-gnats.current /home/gnats gnats \
    "GNATS bug tracking database"
ask_distrib FreeBSD-mail.current /home/mail . \
    "mailing list archive"

cat <<EOF

Now, a few questions so that I can set up your CVSup server properly.

For security reasons, both the CVSup client and server should run
under their own unique user and group IDs.  These IDs should have no
special access privileges.  Normally, the user:group "cvsupin:cvsupin"
is used for the client and "cvsup:cvsup" is used for the server, but
you can choose other names if you wish.  At "make install" time, I
will create the users and groups, if they don't already exist.

Use unique user and group IDs for these.  Do not use "nobody",
"nonroot", or "nogroup".

EOF

cuser=$(ask "Unique unprivileged user ID for running the client" cvsupin)
cgroup=$(ask "Unique unprivileged group ID for running the client" cvsupin)
user=$(ask "Unique unprivileged user ID for running the server" cvsup)
group=$(ask "Unique unprivileged group ID for running the server" cvsup)

cat <<EOF

The CVSup server does its logging via syslog.  At "make install"
time, I will set up the logging for you, if necessary.  I will use
the "!program" feature of syslog to keep your CVSup log messages
separate from the messages of your other daemons.

EOF

while :; do
    facility=$(ask "Syslog facility for the server log" daemon)
    case ${facility} in
    daemon|local[0-7]|ftp|user)	break;;
    esac
    echo "Please answer daemon, local0-local7, ftp, or user"
done

cat <<EOF

You can control the load on your machine by limiting the number of
clients that the CVSup server will serve at once.  CVSup won't load
your network especially heavily, but it is more CPU and disk
intensive than most other file server software.

EOF

while :; do
    maxclients=$(ask "Maximum simultaneous client connections" 8)
    if expr "${maxclients}" : "[0-9][0-9]*\$" >/dev/null 2>&1; then
	break
    fi
    echo "Please answer with a number"
done

#------------------------------------------------------------------------------

echo ""
echo -n "Building the \"config.sh\" file ... "
for var in ${variables}; do
    eval echo ${var}=\\\"\${${var}}\\\"
done > ${WRKSRC}/config.sh
echo "Done."

echo -n "Building the \"cvsupd.access\" file ... "
cat <<EOF > ${WRKSRC}/cvsupd.access
-0.0.0.0/0	${maxclients}	# Limit total connections
-0.0.0.0/0/32	1	# Allow only 1 connection from each host
+0.0.0.0/0		# If we reach this rule, we let the client in
EOF
echo "Done."