backupGT.target

#! /bin/sh

###############################################################
# script for remote backup of local modules/shares
###############################################################
. ${0%/*}/target.conf

KEY="$1"   # a key may have been optionally specified

ELAPSED_START=`$ELAPSED_CMD`


###############################################################
# utilities
###############################################################
logHeader () {
    # pass as $* the original command line
    [ "$REQUEST_MODULE" = "_listModules" ] && printf "\n\n"
    echo "===== begin ======================================================="
    echo `$DATE_CMD`: command line = "$@"
    #echo `$DATE_CMD`: SSH_ORIGINAL_COMMAND = "$SSH_ORIGINAL_COMMAND"
    #echo `$DATE_CMD`: KEY = "$KEY"
    echo `$DATE_CMD`: module spec    = "$MODULE_SPEC"
    echo `$DATE_CMD`: request module = "$REQUEST_MODULE"
    echo `$DATE_CMD`: request parms  = "$REQUEST_PARMS"
    echo `$DATE_CMD`: request method = "$REQUEST_METHOD"
} >> $LOG_PATH

logFooter () {
    echo "`$DATE_CMD`: complete (duration = $ELAPSED_MIN minutes)"
    echo "===== end ========================================================="
    echo ""
} >> $LOG_PATH



######################################################################
# main
#  - if we are in a restricted environment there may be no SSH_ORIGINAL_COMMAND
#    so we have to re-read the module spec from the modList 
#  - note information is passed from the client by using the 'ssh command'
#    but if rsync is being used it will have 5 parameters
#    '<hostname> rsync --server --daemon .' appended to it
###############################################################
if [ -n "$SSH_ORIGINAL_COMMAND" ]; then
    MODULE_SPEC="$SSH_ORIGINAL_COMMAND"
elif [ -n "$KEY" ]; then
    # restricted environment but caller supplied key so run target.modList
    #   and search for the line with the specified key
    # append a space to each key so that key=1 doesn't match key=11, key=123, etc
    MODULE_SPEC="`${0%/*}/target.modList | sed 's/\(key=[0-9]*\)/\1 /' | grep 'key='$KEY' '`"
else
    # restricted environment but caller supplied no key so assume caller wants _listModules
    MODULE_SPEC="`printf '%s\t' '_listModules'`"
fi

if echo "$MODULE_SPEC" | grep -vq '	' ; then
    echo "ERROR: protocol violated MODULE_SPEC missing tab delimeter" | tee -a $LOG_PATH 1>&2
fi


REQUEST_MODULE=`echo "$MODULE_SPEC" | sed 's/\([^[:blank:]]*\)	*\(.*\)/\1/'`   #cut -d "	" -f 1
REQUEST_PARMS=` echo "$MODULE_SPEC" | sed 's/\([^[:blank:]]*\)	*\(.*\)/\2/'`   #cut -d "	" -f 2
REQUEST_METHOD=`echo $REQUEST_PARMS | parseAssignment method`
logHeader "$0" "$@"

if [ "$REQUEST_MODULE" =  "_listModules" ]; then
    echo "`$DATE_CMD`: listing modules"  >> $LOG_PATH
    if [ -z  "$REQUEST_PARMS" ]; then
        ${0%/*}/target.modList
    else
        modName=`echo "$REQUEST_PARMS" | parseAssignment modName`
        ${0%/*}/target.modList | grep "^$modName"
    fi
else
    if [ -f "${PROC_PATH_PREFIX}.${REQUEST_MODULE}" ]; then
        . "${PROC_PATH_PREFIX}.${REQUEST_MODULE}"
    fi
    case $REQUEST_METHOD in
        rsync)          module_rsync_process  ;;
        tar)            module_tar_process    ;;
        zfs|zfs.rsync)  module_zfs_process    ;;
    esac
fi
rc=$?

ELAPSED_END=`$ELAPSED_CMD`
ELAPSED_MIN=$(( (ELAPSED_END - ELAPSED_START) / 60 ))
logFooter

exit $rc