#! /bin/sh

# start dccm

# This script assumes that it is being run by root or the DCC user, probably
# while the system is starting.  It should be run before sendmail is started
# to avoid complaints from sendmail about the socket not existing.
# See the misc/rcDCC script.

# Copyright (c) 2005 by Rhyolite Software, LLC
#
# This agreement is not applicable to any entity which sells anti-spam
# solutions to others or provides an anti-spam solution as part of a
# security solution sold to other entities, or to a private network
# which employs the DCC or uses data provided by operation of the DCC
# but does not provide corresponding data to other users.
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# Parties not eligible to receive a license under this agreement can
# obtain a commercial license to use DCC and permission to use
# U.S. Patent 6,330,590 by contacting Commtouch at http://www.commtouch.com/
# or by email to nospam@commtouch.com.
#
# A commercial license would be for Distributed Checksum and Reputation
# Clearinghouse software.  That software includes additional features.  This
# free license for Distributed ChecksumClearinghouse Software does not in any
# way grant permision to use Distributed Checksum and Reputation Clearinghouse
# software
#
# 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 1.3.31-1.65 $Revision$
#        Generated automatically from start-dccm.in by configure.

exec 1>&2 </dev/null

LOGGER_TAG=start-dccm
DCC_LOGGER="logger -s -p ${DCC_ERROR_LOG_FACILITY-mail.err} -t  ${LOGGER_TAG-DCC}"
DCC_HOMEDIR=/var/dcc
# check the args once to get the home directory
while getopts ":xh:r:u:c:a:l:L:R:w:" c; do
    case $c in
        x) set -x;;
        h) DCC_HOMEDIR="$OPTARG";;
        *) ;;
    esac
done
if test ! -s $DCC_HOMEDIR/dcc_conf; then
    eval $DCC_LOGGER "cannot find $DCC_HOMEDIR/dcc_conf"
fi
. $DCC_HOMEDIR/dcc_conf
if test 0"$DCC_CONF_VERSION" -lt 2; then
    # deal with bash reserved $UID and old versions of dcc_conf
    if test -z "$DCCUID" -a -n "$UID"; then
        DCCUID="$UID"
    fi
    if test -z "$DCC_RUNDIR" -a -n "$DCCM_RUNDIR"; then
        DCC_RUNDIR="$DCCM_RUNDIR"
    fi
fi

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

# convert old `dccm -G` to `dccm -Gon`
DCCM_ARGS=`echo "$DCCM_ARGS"                                                \
        | sed -e 's/-\([VdbxANQW]\{1,\}\)G/-\1 -G/g'                        \
            -e 's/-G\([^- ]\)/-G -\1/g'                                        \
            -e 's/-G/-Gon/g'  -e 's/-G[         ]*on[         ]*on/-Gon/g'`
if test -n "$GREY_CLIENT_ARGS"; then
    if test X`expr "X$GREY_CLIENT_ARGS" : '.*\(-G\)'` = X; then
        GREY_CLIENT_ARGS="-G$GREY_CLIENT_ARGS"
    fi
    DCCM_ARGS="$GREY_CLIENT_ARGS $DCCM_ARGS"
fi

if test -n "$DCCM_USERDIRS"; then
    DCCM_ARGS="-U$DCCM_USERDIRS $DCCM_ARGS"
fi


ARGV0=dccm
USAGE="`basename $0`: [-x] [-h homedir] [-r rundir] [-u UID] [-c argv0] \
        [-a args] [-l logdir] [-L log-at] [-R reject_at] [-w whiteclnt]"
OPTIND=1
while getopts "xh:r:u:c:a:l:L:R:w:" c; do
    case $c in
        x) ;;
        h) ;;
        r) DCC_RUNDIR="$OPTARG";;
        u) DCCUID="$OPTARG";;
        c) ARGV0="$OPTARG"
            if test -z "$ARGV0" \
                 -o `expr "X$ARGV0" : '\(X[-_a-zA-Z0-9]*\)'` != "X$ARGV0"; then
                eval $DCC_LOGGER "illegal argv0"
                exit 1
            fi;;
        a) DCCM_ARGS="$DCCM_ARGS $OPTARG";;
        l) DCCM_LOGDIR="$OPTARG";;
        L) DCCM_LOG_AT="$OPTARG";;
        R) DCCM_REJECT_AT="$OPTARG";;
        w) DCCM_WHITECLNT="$OPTARG";;
        *) 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 -n "$DCC_RUNDIR" -a "$DCC_RUNDIR" != /var/run/dcc; then
    DCCM_ARGS="-R$DCC_RUNDIR $DCCM_ARGS"
fi
if test -n "$DCCM_LOGDIR"; then
    DCCM_ARGS="-l$DCCM_LOGDIR $DCCM_ARGS"
fi
CKS="$REP_ARGS"
if test -n "$DCCM_LOG_AT$DCCM_REJECT_AT"; then
    for CK in ${DCCM_CKSUMS:=CMN} $DCCM_XTRA_CKSUMS; do
        CKS="$CKS -t$CK,$DCCM_LOG_AT,$DCCM_REJECT_AT"
    done
fi
if test -n "$DCCM_WHITECLNT"; then
    CKS="$CKS -w$DCCM_WHITECLNT"
fi
DCCM_ARGS="$CKS $DNSBL_ARGS $XFLTR_ARGS $DCC_LOG_ARGS $DCCM_ARGS"


# stop an existing dccm
#   signal the process group because on Linux systems it does not work
#   to signal the main process.  See `man sigwait` on a Linux system.
PID=`cat $DCC_RUNDIR/$ARGV0.pid 2>/dev/null`
if test -n "$PID"; then
    if `kill -15 $PID 2>/dev/null`; then
        CNT=0
        while test $CNT -lt 6; do
            if `/bin/kill -15 $PID 2>/dev/null`; then
                if test $CNT -eq 0; then
                    echo "    stopping dccm PID $PID "  | tr -d '\012'
                else
                    echo "."  | tr -d '\012'
                fi
                sleep 1
                CNT=`expr $CNT + 1`
            else
                break
            fi
        done
        /bin/kill -9 $PID 2>/dev/null
        if test $CNT -ne 0; then
            echo
        fi
    fi
fi

# assume unset DCCD_ENABLE is "on" for upward compatibility
case "$DCCM_ENABLE" in
    [oO][fF][fF]) exit 0;;
esac
if test ! -x $DCC_LIBEXEC/dccm; then
    eval $DCC_LOGGER "cannot start dccm because it has not been installed"
    exit 1
fi

if test ! -d $DCC_RUNDIR; then
    mkdir $DCC_RUNDIR
fi

if test "$ARGV0" != dccm -a ! -s $DCC_LIBEXEC/$ARGV0; then
    ln -s dccm $DCC_LIBEXEC/$ARGV0
fi

# first try to use `su -` to set limits
#   fall back to -I for systems where su requires a valid shell in
#        /etc/passwd but where the dcc user does not have one
if test -n "$DCCUID" -a X"$DCCUID" != X"$USER"; then
    if test -d $DCC_RUNDIR; then
        chown $DCCUID $DCC_RUNDIR
    fi
    if su - $DCCUID -c date >/dev/null 2>&1; then
        su - $DCCUID -c "$DCC_LIBEXEC/$ARGV0 $DCCM_ARGS"
        exit
    fi
    DCCM_ARGS="-I$DCCUID $DCCM_ARGS"
fi
eval $DCC_LIBEXEC/$ARGV0 $DCCM_ARGS