#!/bin/bash
#
# This is a modification of the pdfdistiller script to handle using SMB to
# transfer the generated PDF file to a shared folder, so that host
# (running windows) can watch the folder, and print what gets put into it
# using the windows printer drivers.  This way, you don't need ANY linux
# support to print to the printer, as long as you have a windows PC to
# attach it to and install the windows drivers on
#
# This script is intended to be used as a CUPS backend, to create
# PDF file on-the-fly. Just create a printer using the device uri
# pdf:/path/to/dir/. When printing to this printer, a PDF file
# will be generated in the directory specified. The file name will
# be either "<jobname>.pdf" or "unknown.pdf", depending wether the
# jobname is empty or not.
#
# To use it, simply copy this script to your backend directory, and
# create a printer with the correct URI. That's it.
#
# Copyright (C) Michael Goffioul (kdeprint <at> swing <dot> be) 2001
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

LOGFILE=/tmp/winp.log
SPOOLDIR=/var/spool/winp
PDFBIN=`which ps2pdf`
SMBBIN=`which smbclient`
SMBUSER=print
SMBPASS=print
FILENAME= 
# this is borrowed from printpdf script for the filename
PRINTTIME=`date +%m%d-%H%M%S`

echo "Executable: $PDFBIN" > $LOGFILE
echo "Arguments: |$1|$2|$3|$4|$5|$6|" >> $LOGFILE 
echo $# $PRINTTIME >> $LOGFILE

# case of no argument, prints available URIs
if [ $# -eq 0 ]; then
	if [ ! -x "$PDFBIN" ]; then
		exit 0
	fi
	echo "direct winp \"Unknown\" \"Windows Printing\""
	exit 0
fi 

# case of wrong number of arguments
if [ $# -ne 5 -a $# -ne 6 ]; then
	echo "Usage: winp job-id user title copies options [file]"
	exit 1
fi 

# get PDF directory from device URI, and check write status
PDFDIR=${DEVICE_URI#winp-pdf:}
#if [ ! -d "$PDFDIR" -o ! -w "$PDFDIR" ]; then
#	echo "ERROR: directory $PDFDIR not writable"
#	exit 1
#fi 

echo "PDF share: $PDFDIR" >> $LOGFILE 

# generate output filename
OUTPUTFILENAME=
if [ "$3" = "" ]; then
	OUTPUTFILENAME="unknown.pdf"
else
	# OUTPUTFILENAME="$PDFDIR/${3//[^[:alnum:]]/_}.pdf"
	# I changed this to user name, and the printtime to track down who
	# printed the PDF and when, samba printing just uses nobody

	OUTPUTFILENAME="$2-$PRINTTIME.pdf"
	echo "PDF file: $OUTPUTFILENAME placed in: $PDFDIR" >> $LOGFILE
fi 

echo "Output file name: $OUTPUTFILENAME" >> $LOGFILE 

# run ghostscript
if [ $# -eq 6 ]; then
	$PDFBIN $6 "$SPOOLDIR/$OUTPUTFILENAME.tmp"
#>& /dev/null
else
	$PDFBIN - "$SPOOLDIR/$OUTPUTFILENAME.tmp" >& /dev/null
fi

# copy the file to the SMB share
echo smbclient -N $PDFDIR -c \'put $OUTPUTFILENAME.tmp\' >>$LOGFILE
cd $SPOOLDIR
smbclient $PDFDIR $SMBPASS -U $SMBUSER -c "put $OUTPUTFILENAME.tmp" >> $LOGFILE
if [ "$?" -gt 0 ]
then
  echo "Error: Can't copy PDF to $PDFDIR" >> $LOGFILE
  exit 1
fi

# rename to .pdf so it gets picked up
# without this step, file may get picked up while not fully transferred
echo smbclient -N $PDFDIR -c "rename $OUTPUTFILENAME.tmp $OUTPUTFILENAME" >> $LOGFILE
smbclient $PDFDIR $SMBPASS -U $SMBUSER -c "rename $OUTPUTFILENAME.tmp $OUTPUTFILENAME" >> $LOGFILE

#delete file
rm $OUTPUTFILENAME.tmp

exit 0