Backup logs.

log-backup

#! /bin/sh
# log-backup:
#
# Usage:
#  log-backup <service>
#
#  /etc/logrotate.d/ulogd:
#
#    /var/log/ulog/*.log {
#        ...
#        postrotate
#           ...
#            /usr/local/bin/log-backup ulog
#        endscript
#    }
#

LANG=C

SERVICE=${1:?Parameter <service> missing.}
BACKUP_DIR=/home/archives/log/$SERVICE

YESTERDAY_MONTH_DIR=`date -d yesterday +%Y/%m`
YESTERDAY_FILE=`date -d yesterday +%Y%m%d`

DST_DIR=${BACKUP_DIR}/${YESTERDAY_MONTH_DIR}

SRC_FILE=
SRC_FILENAME=
DST_FILE=
COMPRESS_METHOD=
SUFFIX=

# ------------------------------------------------------------------------------
# SUBROUTINES

check_backup_file() {
    [ -n "$COMPRESS_METHOD" ] && SUFFIX=.${COMPRESS_METHOD}
    [ ! -f "${DST_DIR}/${DST_FILE}${SUFFIX}" ] || exit 255
}

compress_backup_file() {
    cd $DST_DIR

    case "$COMPRESS_METHOD" in
        gz)
            gzip $DST_FILE
            ;;
        bz2)
            bzip2 -q -f -9 $DST_FILE
            ;;
        zip)
            zip -q -m -9 ${DST_FILE}.${COMPRESS_METHOD} $DST_FILE
            ;;
        *) 
            ;;
    esac
}

cp_logfile() {
    [ -d $DST_DIR ] || mkdir -p $DST_DIR && \
    cp $SRC_FILE ${DST_DIR}/${DST_FILE}
}

backup_logfile() {
    SRC_FILE=$1
    SRC_FILENAME=$(basename ${SRC_FILE%%.*})
    SRC_EXTENSION=$(basename ${SRC_FILE##*.})
    [ "$SRC_EXTENSION" == 'gz' ] && EXT=.gz
    DST_FILE=${SRC_FILENAME}-${YESTERDAY_FILE}.log${EXT}
    COMPRESS_METHOD=$2

    check_backup_file
    cp_logfile
    [ -n "$COMPRESS_METHOD" ] && \
        compress_backup_file
    #for i in ${SRC_FILES[*]}; do
    #done
}

# ------------------------------------------------------------------------------
#

case "$SERVICE" in
    syslog)
        backup_logfile /var/log/syslog.1 bz2
        ;;

    mail)
        backup_logfile /var/log/mail.log.1 bz2
        ;;

    ulog)
        backup_logfile /var/log/ulog/syslogemu.log.1 bz2
        ;;

    named)
        backup_logfile /var/log/named/notify.log.0 bz2
        backup_logfile /var/log/named/queries.log.0 bz2
        backup_logfile /var/log/named/security.log.0 bz2
        backup_logfile /var/log/named/xfer-in.log.0 bz2
        backup_logfile /var/log/named/xfer-out.log.0 bz2
        ;;
    sudo)
        backup_logfile /var/log/sudo.log.1 bz2
        ;;

    squid3)
        backup_logfile /var/log/squid3/access.log.1 bz2
        ;;

    dansguardian)
        #SRC_FILE=/var/log/dansguardian/access.log.1
        #SRC_FILENAME=$(basename $SRC_FILE .log.1)
        #DST_FILE=${SRC_FILENAME}-${YESTERDAY_FILE}.log
        #COMPRESS_METHOD=bz2
        backup_logfile /var/log/dansguardian/access.log.1 bz2
        ;;

    pure-ftpd)
        backup_logfile /var/log/pure-ftpd/transfer.log.1 bz2
        ;;

    *)
        exit 1
        ;;
esac

# EOF