#!/bin/sh
# an installation script for pf_freebsd copied from Wnn6

check_pw()
{
    if which -s pw; then
	:
    else
	cat <<EOF

This system looks like a pre-2.2 version of FreeBSD.  We see that it
is missing the "pw" utility.  We need this utility.  Please get and
install it, and try again.  You can get the source from:

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

EOF
	exit 1
    fi
}

ask() {
    local question default answer

    question=$1
    default=$2
    if [ -z "${PACKAGE_BUILDING}" ]; then
	read -p "${question} (y/n) [${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
}

check_group() {
    local name id

    name=$1
    id=$2
    #check
    # We need a command 'pw(8)'
    check_pw
    if pw groupshow $name -q ; then
	return 0
    fi
    if pw groupadd -g $id -n $name -N -q ; then 
    	echo ""
    	echo "You need a group '$name' whose ID number is $id"
    	if yesno "Would you like to create it automatically?" y; then
	    pw groupadd -g $id -n $name -M proxy
	    return 0
	fi
    fi
    echo ""
    echo "I was not able to add group '$name:*:63:' as pw reported:"
    pw groupadd -g $id -n $name -N
    echo "Please correct this and try again!"
    echo ""
    return 1
}

case $2 in
PRE-INSTALL)

    if ! check_group authpf 63 ; then 
	exit 1
    fi
    ;;
esac