#!/bin/sh

# an installation script for monkeysphere (borrowing liberally from
# Wnn6's port and from monkeysphere's debian/monkeysphere.postinst)

# Author: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
# Copyright 2008

# FIXME: is /var/lib/monkeysphere the right place for this stuff on
# FreeBSD?
VARLIB="/var/lib/monkeysphere"

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
}

failure() {
    local retval badgroups badusers
    retval=$1
    badgroups=`getent group monkeysphere 641`
    badusers=`getent passwd monkeysphere 641`

    if [ X"$badgroups" != X ]; then
	badgroups="
Conflicting group(s):

$badgroups"
    fi

    if [ X"$badusers" != X ]; then
	badusers="Conflicting user(s):

$badusers"
    fi
    
    cat <<EOF

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
This port or package assumes that the ID number of 'monkeysphere' will
be 641.  But this system has:
$badgroups
$badusers

Please correct these conflict(s) and try again.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
EOF
    exit $retval
}

case $2 in
POST-INSTALL)

    # make sure that the correct user and group are present:
    id_monkeysphere=`id -u monkeysphere 2> /dev/null`
    gid_monkeysphere=`getent group monkeysphere | cut -f3 -d: 2> /dev/null`
    if [ X"$id_monkeysphere" = X641 ] && [ X"$gid_monkeysphere" = X641 ];then
	exit 0
    else
    # add an account 'monkeysphere' to this system
	echo ""
	echo "You need an account 'monkeysphere' whose ID number is 641, with group 'monkeysphere' (GID 641)"
	if yesno "Would you like to create it automatically?" y; then
	# We need a command 'pw(8)'
	    check_pw
	    pw groupadd monkeysphere -g 641 || failure $?
	    pw useradd monkeysphere -u 641 -g 641 -h - -d "$VARLIB" \
		-s /bin/sh -c 'monkeysphere authentication user,,,' || failure $?
	# FIXME: should we really be using a real shell?  Convention
	# (/usr/ports/UIDs) seems to indicate /nonexistent is
	# preferred
	else
	    echo "Please create it, and try again."
	    exit 1
	fi
    fi
    # FIXME: we should create $VARLIB and chown the relevant subdirs
    # (see debian/monkeysphere.postinst)
    
    ;;
esac