#! /bin/sh

# start dccd for greylisting
# This script assumes that it is being run by root or the DCC user, probably
# while the system is starting.  If start-dccm or start-dccifd,
# This script should be run before both of them to # avoid complaints.
# See the misc/rcDCC script.

# Copyright (c) 2019 by Rhyolite Software, LLC
#
# Permission to use, copy, modify, and distribute this software without
# changes for any purpose with or without fee is hereby granted, provided
# that the above copyright notice and this permission notice appear in all
# copies and any distributed versions or copies are either unchanged
# or not called anything similar to "DCC" or "Distributed Checksum
# Clearinghouse".
#
# __________________________________________________
#
# THE SOFTWARE IS PROVIDED "AS IS" AND RHYOLITE SOFTWARE, LLC DISCLAIMS ALL
# WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL RHYOLITE SOFTWARE, LLC
# BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
# OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
# ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
#	Rhyolite Software DCC 2.3.167-1.22 $Revision$
#	Generated automatically from start-grey.in by configure.

exec 1>&2 </dev/null

LOGGER_TAG=start-grey-dccd
DCC_LOGGER="logger -s -p ${DCC_ERROR_LOG_FACILITY-mail.err} -t ${LOGGER_TAG-DCC}"
DCC_HOMEDIR=/var/dcc
VERBOSE=
DEBUG=
# check the args once to get the home directory
while getopts ":xvh:u:a:i:" c; do
    case $c in
	x) set -x; DEBUG=-x; VERBOSE=-v;;
	v) VERBOSE=-v;;
	h) CWD=`pwd`
	    DCC_HOMEDIR=`echo "$OPTARG" | sed -e "s@^[^/]@$CWD/&@"`;;
	*) ;;
    esac
done
if test ! -s $DCC_HOMEDIR/dcc_conf; then
    eval $DCC_LOGGER \"cannot find $DCC_HOMEDIR/dcc_conf\"
fi
. $DCC_HOMEDIR/dcc_conf
# deal with bash reserved $UID
if test -z "$DCCUID" -a -n "$UID"; then
    DCCUID="$UID"
fi
if test "$BRAND" != ""; then
    BRAND="-n $BRAND"
fi
GREY_DCCD_ARGS="$GREY_DCCD_ARGS $BRAND $DCC_LOG_ARGS"

STOP_ARGS=
USAGE="`basename $0`: [-xv] [-h homedir] [-u UID] [-a args] [-i id]"
OPTIND=1
while getopts "xvh:u:a:i:" c; do
    case $c in
	x) ;;
	v) ;;
	h) ;;
	u) DCCUID="$OPTARG";;
	a) GREY_DCCD_ARGS="$GREY_DCCD_ARGS $OPTARG";;
	i) $GREY_SRVR_ID="$OPTARG"; STOP_ARGS="$STOP_ARGS -i $GREY_SRVR_ID";;
	*) eval $DCC_LOGGER \"$USAGE\"; exit 1;;
    esac
done
shift `expr $OPTIND - 1 || true`
if test "$#" -ne 0; then
    eval $DCC_LOGGER \"$USAGE\"
    exit 1
fi

if test "$DCC_HOMEDIR" != /var/dcc; then
    GREY_DCCD_ARGS="-h $DCC_HOMEDIR $GREY_DCCD_ARGS"
    STOP_ARGS="-h $DCC_HOMEDIR $STOP_ARGS"
fi


# stop the current daemon, including giving it time to shut down gracefully
$DCC_LIBEXEC/stop-dccd -G $DEBUG $VERBOSE $STOP_ARGS

case X"$GREY_ENABLE" in
    X[oO][nN])
	# start the greylist server
	;;
    X)
	# if $GREY_CLIENT_ARGS contains "-G" and $GREY_ENABLE is not set
	#   then start the greylist server
	if test -z "$GREY_CLIENT_ARGS"; then
	    exit 0
	fi
	;;
    *) exit 0;;
esac

# tell dccd where to find dbclean if it is not where dccd was built to look.
if test "$DCC_LIBEXEC" != /var/dcc/libexec; then
    GREY_DCCD_ARGS="-C $DCC_LIBEXEC/dbclean $GREY_DCCD_ARGS"
fi

if test ! -x $DCC_LIBEXEC/dccd; then
    eval $DCC_LOGGER \"cannot start greylist dcccd because dccd has not been installed\"
    exit 1
fi

if test -z "$GREY_SRVR_ID"; then
    if grep '# auto local greylist server-ID' $DCC_HOMEDIR/ids >/dev/null 2>&1 \
	    && grep '^32702[	 ]' $DCC_HOMEDIR/ids >/dev/null 2>&1; then
	GREY_SRVR_ID=32702
    else
	eval $DCC_LOGGER \"'cannot start greylist dccd; GREY_SRVR_ID not set in $DCC_HOMEDIR/dcc_conf'\"
	exit 1
    fi
fi
GREY_DCCD_ARGS="-i $GREY_SRVR_ID $GREY_DCCD_ARGS"

# first try to use `su -` to set limits
#   fall back to -I for systems where su requires a valid shell in
#	/etc/passwd but the dcc user does not have one
if test -n "$DCCUID" -a X"$DCCUID" != X"$USER"; then
    if TERM= su - $DCCUID -c date >/dev/null 2>&1; then
	TERM= su - $DCCUID -c "$DCC_LIBEXEC/dccd -Gon $GREY_DCCD_ARGS"
	exit
    fi
    GREY_DCCD_ARGS="-I,$DCCUID $GREY_DCCD_ARGS"
fi
eval $DCC_LIBEXEC/dccd -Gon $GREY_DCCD_ARGS