hplip/hpcups-update-ppds.sh

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#!/bin/bash
## Copyright (C) 2010 Red Hat, Inc.
## Authors:
## Tim Waugh <twaugh@redhat.com>
## 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., 675 Mass Ave, Cambridge, MA 02139, USA.
## Purpose: Update hpcups PPDs when necessary.
sock=/var/run/cups/cups.sock
running=$(LC_ALL=C lpstat -h "$sock" -r 2>/dev/null)
if [ "$?" -ne 0 ]
then
# No lpstat in path
exit 0
fi
if [ -z "${running##*not*}" ]
then
# scheduler is not running
exit 0
fi
trap 'rm -f "$tmpdir"/models; rmdir "$tmpdir"; exit 0' \
0 HUP INT QUIT ILL ABRT PIPE TERM
debug=true
tmpdir="$(mktemp -d)"
for ppd in /etc/cups/ppd/*.ppd
do
[ -r "$ppd" ] || continue
queue="${ppd#/etc/cups/ppd/}"
queue="${queue%.ppd}"
lpstat -h "$sock" -p "$queue" &>/dev/null || continue
# We have PPD associated with a queue. Find out its NickName
$debug && echo "Examining $queue"
nickname="$(grep '^\*NickName:' "$ppd")"
nickname="${nickname#*\"}" # strip text up to and incl first double quote
nickname="${nickname%\"*}" # strip final double quote
$debug && echo "NickName is: $nickname"
# Is it an hpcups PPD?
[ -z "${nickname##*, hpcups*}" ] || continue
$debug && echo "hpcups: true"
# No: need to regenerate the PPD.
if [ ! -f "$tmpdir/models" ]
then
# Get list of driver URIs and NickNames
lpinfo -h "$sock" --include-schemes=drv -m 2>/dev/null >"$tmpdir/models"
fi
# Strip hpcups version from NickName
nickname="${nickname%, hpcups*}"
$debug && echo "Stripped NickName: $nickname"
while read line
do
uri=${line%% *}
nn="${line#$uri }"
[ -z "${nn##*, hpcups*}" ] || continue
nn="${nn%, hpcups*}"
if [ "$nn" == "$nickname" ]
then
$debug && echo "Match found, URI: $uri"
# Unfortunately CUPS will reset the page size when we
# change the PPD, due to the weird page size names that
# HPLIP uses. Try to maintain the existing page size.
size="$(grep '^\*DefaultPageSize:' "$ppd")"
size="${size##* }" # strip until after first ' '
size="${size%% *}" # strip after any ' '
$debug && echo "PageSize is $size"
if [ -z "${size#*Duplex}" ]
then
# Special handling for duplex sizes because HPLIP
# broke backwards compatibility with *that* too!
size="${size%Duplex}.Duplex"
fi
null=/dev/null
$debug && null=/dev/stdout
lpadmin -h "$sock" -p "$queue" -m "$uri" &>"$null" || :
$debug && echo "PPD regenerated"
lpadmin -h "$sock" -p "$queue" -o PageSize="$size" &>"$null" || :
$debug && echo "PageSize restored to $size"
break
fi
done <"$tmpdir/models"
done
exit 0