On Sat, Jun 13, 2015 at 08:18:41PM +0100, Craig Skinner wrote:
> Hi there,
>
> Here's an update that enables CUPS to run on boxes which
> usually read-only mount both /usr & /usr/local
>
> The current rc script alters /usr, /etc & /dev on each start/stop.
>
> Inspiration taken from the postfix-{en,dis}able,install scripts:
> Much moved out of the rc script and into 'cups-toggle (enable|disable)'.
>
> Freely adjust to your better experience!
>
> I'm not sure if the script needs a copyright notice or not, here anyway.
I prefer the way it's done now.
It's automatic -- I don't want to have to remember to run yet another command
each time I update (which is very often).
> ? files
> ? pkg/MESSAGE-main
> Index: Makefile
> ===================================================================
> RCS file: /cvs/ports/print/cups/Makefile,v
> retrieving revision 1.197
> diff -u -p -r1.197 Makefile
> --- Makefile 9 Jun 2015 08:01:13 -0000 1.197
> +++ Makefile 13 Jun 2015 18:24:58 -0000
> @@ -10,7 +10,7 @@ EXTRACT_SUFX= .tar.bz2
> PKGNAME-main= cups-${VERSION}
> PKGNAME-libs= cups-libs-${VERSION}
>
> -REVISION-main= 0
> +REVISION-main= 1
> REVISION-libs= 0
>
> CATEGORIES= print sysutils
> @@ -124,6 +124,8 @@ post-install:
> # Remove files now part of cups-filters
> rm -f ${PREFIX}/share/cups/banners/*
> rm -f ${PREFIX}/share/cups/data/testprint
> + ${SUBST_CMD} -c -g ${BINGRP} -o ${BINOWN} -m ${BINMODE}
> ${FILESDIR}/cups-toggle ${PREFIX}/sbin/cups-toggle
> +
>
> # Remove desktop file and icons; we don't really need them (it's just a
> # launcher for http://localhost:631 and we may actually want to
> Index: pkg/PLIST-main
> ===================================================================
> RCS file: /cvs/ports/print/cups/pkg/PLIST-main,v
> retrieving revision 1.18
> diff -u -p -r1.18 PLIST-main
> --- pkg/PLIST-main 9 Jun 2015 07:39:14 -0000 1.18
> +++ pkg/PLIST-main 13 Jun 2015 18:24:58 -0000
> @@ -2,6 +2,7 @@
> @conflict LPRng-*
> @pkgpath print/cups
> @pkgpath print/cups,ldap
> +@extraunexec ${TRUEPREFIX}/sbin/cups-toggle disable
> @extraunexec rm -rf ${SYSCONFDIR}/cups/*.conf.O /var/log/cups
> @bin bin/cancel
> @bin bin/cupstestdsc
> @@ -118,6 +119,7 @@ sbin/accept
> @bin sbin/cupsaccept
> @bin sbin/cupsaddsmb
> @bin sbin/cupsctl
> +sbin/cups-toggle
> @mode 0500
> @bin sbin/cupsd
> @mode
> Index: pkg/cupsd.rc
> ===================================================================
> RCS file: /cvs/ports/print/cups/pkg/cupsd.rc,v
> retrieving revision 1.21
> diff -u -p -r1.21 cupsd.rc
> --- pkg/cupsd.rc 6 Dec 2014 11:12:44 -0000 1.21
> +++ pkg/cupsd.rc 13 Jun 2015 18:24:58 -0000
> @@ -4,75 +4,27 @@
>
> daemon="${TRUEPREFIX}/sbin/cupsd"
>
> -. /etc/rc.d/rc.subr
> +. ${RCDIR}/rc.subr
>
> pexp="${daemon}"
>
> -_lpfiles="/usr/bin/lpq /usr/bin/lpr /usr/bin/lprm /usr/sbin/lpc \
> - /usr/sbin/lpd /usr/share/man/man1/lpq.1 /usr/share/man/man1/lpr.1 \
> - /usr/share/man/man1/lprm.1 /usr/share/man/man8/lpc.8 \
> - /usr/share/man/man8/lpd.8"
>
> -rc_pre() {
> - # rcexec is needed if openfiles limits are bumped and cupsd(8)
> - # runs in debug mode to prevent MaxClients warnings in logs
> - ${rcexec} "${daemon} ${daemon_flags} -t" || return 1
> - [ -e /dev/lpt0 ] && chown _cups /dev/lp[a,t][0-2]
> - # XXX cups-driverd(8) can crash when setting up a printer driver
> - rm -f /var/cache/cups/*
> -
> - if [ -e /usr/sbin/lpd.pre-cups -a ! -f /usr/sbin/lpd -a -L
> /usr/sbin/lpc ]; then
> - return
> - elif [ ! -e /usr/sbin/lpd ]; then
> - return
> - else
> - for i in ${_lpfiles}; do
> - if [ -f $i -a ! -L $i ]; then
> - mv -f $i $i.pre-cups
> - fi
> - done
> - fi
> - if [ -e /etc/printcap ]; then
> - if [ ! -e /etc/printcap.pre-cups ]; then
> - mv /etc/printcap /etc/printcap.pre-cups
> - ln -s ${SYSCONFDIR}/cups/printcap /etc/printcap
> - fi
> - else
> - ln -s ${SYSCONFDIR}/cups/printcap /etc/printcap
> - fi
> - for i in lpq lpr lprm; do
> - rm -f /usr/bin/$i
> - ln -s ${TRUEPREFIX}/bin/$i /usr/bin/$i
> +rc_pre()
> +{
> + for _lpfile in /usr/bin/lp{q,r,rm} /usr/sbin/lp{c,d}
> ${SYSCONFDIR}/printcap
> + do
> + [[ -h ${_lpfile} ]] && continue
> + print -u2 "${_lpfile} isn't a symlink - run 'cups-toggle
> enable'"
> + return 1
> done
> - rm -f /usr/sbin/lpc
> - ln -s ${TRUEPREFIX}/sbin/lpc /usr/sbin/lpc
> -}
>
> -rc_post() {
> - if [ ! -L /usr/sbin/lpc ]; then
> - return
> - else
> - for i in lpq lpr lprm; do
> - rm -f /usr/bin/$i
> - done
> -
> - rm -f /usr/sbin/lpc
> -
> - if [ ! -e /usr/sbin/lpd.pre-cups ]; then
> - return
> - else
> - if [ -L /etc/printcap ]; then
> - rm /etc/printcap
> - fi
> - for i in ${_lpfiles} /etc/printcap; do
> - if [ -e $i.pre-cups ]; then
> - mv -f $i.pre-cups $i
> - fi
> - done
> - fi
> - fi
> + # XXX cups-driverd(8) can crash when setting up a printer driver
> + # find /var/cache/cups -type f -name ppds.dat -exec rm -- {} \;
>
> - [ -e /dev/lpt0 ] && chown root /dev/lp[a,t][0-2]
> + # rcexec is needed if openfiles limits are bumped and cupsd(8)
> + # runs in debug mode to prevent MaxClients warnings in logs
> + ${rcexec} "${daemon} ${daemon_flags} -t"
> }
> +
>
> rc_cmd $1
> --- /dev/null Sat Jun 13 19:28:37 2015
> +++ pkg/MESSAGE-main Sat Jun 13 16:41:13 2015
> @@ -0,0 +1,10 @@
> +CUPS can be set up to replace lpd entirely.
> +
> +To backup the lp* tools and symlink in the CUPS replacements, do:
> +
> + ${PREFIX}/sbin/cups-toggle enable
> +
> +To revert to the base lp* tools, do:
> +
> + ${PREFIX}/sbin/cups-toggle disable
> +
> --- /dev/null Sat Jun 13 19:29:04 2015
> +++ files/cups-toggle Sat Jun 13 19:17:39 2015
> @@ -0,0 +1,161 @@
> +#!/bin/ksh
> +#
> +# $OpenBSD$
> +#
> +#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> +#
> +# Copyright (c) 2015 Craig Skinner <skin...@britvault.co.uk>
> +#
> +# Permission to use, copy, modify, and distribute this software for any
> +# purpose with or without fee is hereby granted, provided that the above
> +# copyright notice and this permission notice appear in all copies.
> +#
> +# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
> +# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
> +# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
> +# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
> +# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
> +# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
> +# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
> +#
> +#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> +#
> +
> +
> +EX_USAGE='64'
> +BINARIES='/usr/bin/lp{q,r,rm} /usr/sbin/lp{c,d}'
> +MAN_PAGES='/usr/share/man/man1/lp{q,r,rm}.1 /usr/share/man/man8/lp{c,d}.8'
> +
> +readonly EX_USAGE BINARIES MAN_PAGES
> +
> +
> +function enable
> +{
> + print "$0()"
> +
> + ${RCDIR}/lpd check &&
> + {
> + ${RCDIR}/lpd stop || return
> + }
> +
> + print -n 'Backing up:'
> + for _lpfile in ${BINARIES} ${MAN_PAGES} ${SYSCONFDIR}/printcap
> + do
> + [[ -f ${_lpfile} ]] || continue
> + [[ -h ${_lpfile} ]] && continue
> + [[ -f ${_lpfile}.pre-cups ]] && continue
> + print -n " ${_lpfile##*/}"
> + mv ${_lpfile} ${_lpfile}.pre-cups || return
> + done
> + print '.'
> +
> + [[ -h ${SYSCONFDIR}/printcap ]] ||
> + {
> + print -n 'Symlinking ${SYSCONFDIR}/printcap'
> + ln -s ${SYSCONFDIR}/cups/printcap ${SYSCONFDIR}/printcap ||
> return
> + print '.'
> + }
> +
> + print -n 'Symlinking binaries:'
> + for binary in ${BINARIES}
> + do
> + [[ -h ${binary} ]] && continue
> + [[ -f ${TRUEPREFIX}/bin/${binary##*/} ]] &&
> + {
> + print -n " ${binary##*/}"
> + ln -s ${TRUEPREFIX}/bin/${binary##*/} ${binary} ||
> return
> + continue
> + }
> + [[ -f ${TRUEPREFIX}/sbin/${binary##*/} ]] &&
> + {
> + print -n " ${binary##*/}"
> + ln -s ${TRUEPREFIX}/sbin/${binary##*/} ${binary} ||
> return
> + continue
> + }
> + print -n " ${binary##*/}"
> + ln -s /usr/bin/false ${binary} || return
> + done
> + print '.'
> +
> + chown_lp_devs _cups
> +}
> +
> +
> +function disable
> +{
> + print "$0()"
> +
> + ${RCDIR}/cups_browsed check &&
> + {
> + ${RCDIR}/cups_browsed stop || return
> + }
> + ${RCDIR}/cupsd check &&
> + {
> + ${RCDIR}/cupsd stop || return
> + }
> +
> + print -n 'Reverting to base:'
> + for _lpfile in ${BINARIES} ${MAN_PAGES} ${SYSCONFDIR}/printcap
> + do
> + [[ -h ${_lpfile} ]] &&
> + {
> + rm ${_lpfile} || return
> + }
> + [[ -f ${_lpfile}.pre-cups ]] || continue
> + print -n " ${_lpfile##*/}"
> + mv ${_lpfile}.pre-cups ${_lpfile} || return
> + done
> + print '.'
> +
> + chown_lp_devs root
> +}
> +
> +
> +function usage
> +{
> + print -u2 "usage: ${0##*/} (enable|disable)"
> + exit ${EX_USAGE}
> +}
> +
> +
> +function chown_lp_devs
> +{
> + print "$0() $1"
> + userinfo -e $1 || return
> +
> + lp_devs='/dev/lp[a,t][0-2]'
> + log_devs_are=$(mktemp)
> + ls -l ${lp_devs} > ${log_devs_are}
> +
> + for lp_dev in ${lp_devs}
> + do
> + [[ -c ${lp_dev} ]] || continue
> + [[ $(stat -f "%Su" ${lp_dev}) == $1 ]] && continue
> + chown $1 ${lp_dev} || return
> + done
> +
> + log_devs_now=$(mktemp)
> + ls -l ${lp_devs} > ${log_devs_now}
> + cmp -s ${log_devs_are} ${log_devs_now} ||
> + {
> + print 'devices are:'
> + cat ${log_devs_are}
> + print 'devices now:'
> + cat ${log_devs_now}
> + }
> + rm ${log_devs_are} ${log_devs_now}
> +}
> +
> +
> +[[ $# -eq 1 ]] || usage
> +[[ $1 == 'enable' || $1 == 'disable' ]] || usage
> +
> +
> +$1 || exit
> +
> +for _lpfile in ${BINARIES} ${MAN_PAGES} ${SYSCONFDIR}/printcap
> +do
> + _lpfiles="${_lpfiles} ${_lpfile}*"
> +done
> +ls -lF ${_lpfiles}
> +
>
--
Antoine
