#!/usr/local/bin/bash
 #
 # /usr/lib/cups/backend/sispm
 #
 # (c) September 2007  Kurt Pfeifle <pfeifle@kde.org>
 #                                  <kurt.pfeifle@infotec.com>
 #     Network printing consultant Linux/Unix/Windows/Samba/CUPS
 #
 # (c) Jan 2008 Dominic Morris <dom@subobrital.org.uk>
 #     Uses sispm to control printers
 #  
 #
 # License: GNU GPLv2 or GPLv3 (your choice)
 # Warranty: None at all; you may need to fix included defects on your own.
 #
 
 set -x
 backend=${0}
 jobid=${1}
 cupsuser=${2}
 jobtitle=${3}
 jobcopies=${4}
 joboptions=${5}
 jobfile=${6}
 
 # the following messages should appear in /var/log/cups/error_log,
 # depending on what "LogLevel" setting your cupsd.conf carries:
 echo "INFO: backend=${backend}"       1>&2
 echo "INFO: jobid=${jobid}"           1>&2
 echo "INFO: cupsuser=${cupsuser}"     1>&2
 echo "INFO: jobtitle=${jobtitle}"     1>&2
 echo "INFO: jobcopies=${jobcopies}"   1>&2
 echo "INFO: joboptions=${joboptions}" 1>&2
 echo "INFO: jobfile=${jobfile}"       1>&2
 echo "INFO: printtime=${printtime}"   1>&2
 echo "EMERG:  This is a \"emergency\" level log message" 1>&2
 echo "ALERT:  This is a \"alert\" level log message"     1>&2
 echo "CRIT:   This is a \"critical\" level log message"  1>&2
 echo "ERROR:  This is a \"error\" level log message"     1>&2
 echo "WARN:   This is a \"warn\" level log message"      1>&2
 echo "NOTICE: This is a \"notice\" level log message"    1>&2
 echo "INFO:   This is a \"info\" level log message"      1>&2
 echo "INFO:   This is a 2nd \"info\" level log message"  1>&2
 echo "INFO:   This is a 3rd \"info\" level log message"  1>&2
 echo "DEBUG:  This is a \"debug\" level log message"     1>&2
                                                                                                           
 
 # we will read the output filename from the printers $DEVICE_URI environment
 # variable that should look s.th. like "sispm:/port number:[normal uri]"

 # Split up Device URI into sensible bits

 base=`echo ${DEVICE_URI} |  sed "s/sispm:\///g"`
 port=`echo $base | sed "s/\([0-9]*\)\/\(.*\)/\1/"`
 realuri=`echo $base | sed "s/\([0-9]*\)\/\(.*\)/\2/"`
 realbackend=`echo $realuri | awk -F ':' '{print $1}'`
 
 # Now do the real work:
 case ${#} in
       0)
          # this case is for "backend discovery mode"
          echo "sispm sispm \"SisPM backend\" \"Backend to control printer power using a sispm\""
          exit 0
          ;;
       5)
            # backend needs to read from stdin if number of arguments is 5
	  if [ ! -f /var/run/cups/sispm/${port} ]; then
             /usr/local/bin/sispmctl -o $port
	  fi
          touch /var/run/cups/sispm/${port}
	  export DEVICE_URI=$realuri
	  exec -a "${DEVICE_URI}" /usr/local/libexec/cups/backend/${realbackend} "$@"
	  ;;
       6)
            # backend needs to read from file if number of arguments is 6
	  if [ ! -f /var/run/cups/sispm/${port} ]; then
             /usr/local/bin/sispmctl -o $port
	  fi
          touch /var/run/cups/sispm/${port}
	  export DEVICE_URI=$realuri
	  exec -a "${DEVICE_URI}" /usr/local/libexec/cups/backend/${realbackend} "$@"
          ;;
       1|2|3|4|*)
          # these cases are unsupported
          echo " "
          echo " Usage: sispm job-id user title copies options [file]"
          echo " "
          echo " (Install as CUPS backend in /usr/lib/cups/backend/sispm)"
          echo " (Use as 'device URI' like \"sispm:/port/normaluri\" for printer installation.)"
          exit 1
 esac
 
 echo  1>&2
 
 # we reach this line only if we actually "printed something"
 echo "NOTICE: processed Job ${jobid} to file ${DEVICE_URI#2file:}" 1>&2
 echo "NOTICE: End of \"${0}\" run...."                             1>&2
 echo "NOTICE: ---------------------------------------------------" 1>&2
 echo  1>&2
 exit 0