#! /bin/sh

# daily DCC cron job

# This script should be run daily or more often when there is a shortage
#   of disk space to run dbclean to discard and compress old checksums.
#   It also discards old DCC client log files.

#.  By default it is installed in /usr/lib/dcc.  Instead of being copied
#   to a directory such as /etc/cron/daily on some systems, a symbolic link
#   should be used.

# Copyright (c) 2004 by Rhyolite Software
#
# 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.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND RHYOLITE SOFTWARE DISCLAIMS ALL
# WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL RHYOLITE SOFTWARE
# 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 1.2.50-1.45 $Revision: 1.1 $
#	Generated automatically from cron-dccd.in by configure.

exec 1>&2 </dev/null

DCC_LOGGER="logger -s -p ${DCC_ERROR_LOG_FACILITY-mail.err} -t DCC"
DCC_HOMEDIR=/var/lib/dcc
DEBUG=
QUIET=-q
# check the args once to get the home directory
while getopts "xh:a:" c; do
    case $c in
	x) set -x; DEBUG=-x; QUIET=;;
	h) DCC_HOMEDIR="$OPTARG";;
	*) ;;
    esac
done
. $DCC_HOMEDIR/dcc_conf
# deal with bash reserved $UID and old versions of dcc_conf
if test 0"$DCC_CONF_VERSION" -lt 2 -a -z "$DCCUID" -a ! -z "$UID"; then
    DCCUID="$UID"
fi

USAGE="`basename $0`: [-x] [-h homedir] [-a args]"
OPTIND=1
while getopts "xh:a:" c; do
    case $c in
	x) ;;
	h) ;;
	a) DBCLEAN_ARGS="$DBCLEAN_ARGS $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

# make the paths absolute and trim the per day/hour/minute business
LOGDIR=`echo $DCCM_LOGDIR						\
	| sed -e "s@^[DHM]?@@" -e "s@^[^/]@$DCC_HOMEDIR/&@"`
USERDIRS=`echo $DCCM_USERDIRS						\
	| sed -e "s@^[^/]@$DCC_HOMEDIR/&@"`

OARGS=64dDGNRPSVqi
DBCLEAN_ARGS="$QUIET -h $DCC_HOMEDIR $DCC_LOG_ARGS $DBCLEAN_ARGS"
GREY_DBCLEAN_ARGS=`echo "$DBCLEAN_ARGS"					\
	| sed -e "s/-[eEt][ 	]*[^ 	]\{1,\}//g"			\
	    -e "s/\(-[$OARGS]\{1,\}\)[eEt][ 	]*[^ 	]\{1,\}/\1/g"`

# Removed old dccm log files.
if test ! -z "$DBCLEAN_LOGDAYS"; then
    if test -d "$LOGDIR"; then
	find "$LOGDIR" -follow \( -name 'msg.*' -o -name 'tmp.*' \)	\
		-mtime +$DBCLEAN_LOGDAYS				\
	    | xargs /bin/rm -f
	# remove empty subdirectories
	find "$LOGDIR" -follow -depth -name '[0-9]*' -type d		\
	    | xargs /bin/rmdir 2>/dev/null
    fi
    # clean per-user logs
    if test "$USERDIRS" != "" -a -d "$USERDIRS"; then
	find "$USERDIRS" -follow \( -name 'msg.*' -o -name 'tmp.*' \)	\
		-mtime +$DBCLEAN_LOGDAYS				\
	    | xargs /bin/rm -f
    fi
fi

# Notify users about new log files.
#   The file $DCC_LIBEXEC/webuser-notify must be a script that will send
#   a suitable message.  See the example in the cgi-bin directory.
if test "$USERDIRS" != "" -a -d "$USERDIRS"				\
	-a -x $DCC_LIBEXEC/webuser-notify; then
    MARKER=$USERDIRS/notify.marker
    touch $MARKER.new
    if test -r $MARKER; then
	NEWER="-newer $MARKER"
    else
	NEWER=
    fi
    # Find usernames with a pending message or with a new but not newer
    #	    than new log files
    #	Avoid newer than new files to ensure we generate at most
    #	    one notification per log file.
    find "$USERDIRS" -follow \( -name notify.pending			\
	    -o \( -name 'msg.*' $NEWER \) \) ! -newer $MARKER.new	\
	| sed -n -e 's@.*/\([^/]*/[^/]*\)/log/msg\.[^/]*$@\1@p'		\
		-e 's@.*/\([^/]*/[^/]*\)/notify.pending$@\1@p'		\
	| sort -u							\
	| $DCC_LIBEXEC/webuser-notify $DEBUG -d "$USERDIRS"

    mv -f $MARKER.new $MARKER
fi


# trim the greylist database
case X"$GREY_ENABLE" in
    [oO][nN]) 
	GREY_ENABLE=on
	;;
    X)
	if test ! -z "$GREY_CLIENT_ARGS"; then
	    GREY_ENABLE=on
	fi
	;;
esac
if test ! -z "$GREY_SRVR_ID" -a "$GREY_ENABLE" = on; then
    SADDR=`expr "X$GREY_DCCD_ARGS" : ".*-[$OARGS]*a[	 ]*\([^	 ]*\).*"`
    if test ! -z "$SADDR"; then
	SADDR="-a $SADDR"
    fi
    $DCC_LIBEXEC/dbclean -Gon -i $GREY_SRVR_ID $SADDR $GREY_DBCLEAN_ARGS
fi


# Delete old checksums from the dccd database if it seems dccd can run.
#	For historical reasons, SRVR_ID set and DCCD_ENABLE nul
#	turns on dccd
case "$DCCD_ENABLE" in
    [oO][fF][fF]) DCCD_ENABLE=off;;
    *) DCCD_ENABLE=on;;
esac
if test ! -z "$SRVR_ID" -a "$DCCD_ENABLE" = on; then
    SADDR=`expr "X$DCCD_ARGS" : ".*-[$OARGS]*a[	 ]*\([^	 ]*\).*"`
    if test ! -z "$SADDR"; then
	SADDR="-a $SADDR"
    fi
    $DCC_LIBEXEC/dbclean -i $SRVR_ID $SADDR $DBCLEAN_ARGS
fi