OpenPKG Specs: openpkg/rc.func@300d43423c2e (annotated)

openpkg/rc.func@300d43423c2e (annotated)

openpkg/rc.func

Wed, 08 Feb 2012 20:07:00 +0200

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 08 Feb 2012 20:07:00 +0200
changeset 588: 300d43423c2e
parent 427: 71503088f51b
permissions: -rw-r--r--

Update version, adapt patch, correct PID writing, correct build on newer
FreeBSD releases, and most importantly introduce new patch to try to
avoid segfault caused by multiple network interfaces with the same (or
no) address. This is common when configuring bridges and tunnels.

 ##
 ##  @l_prefix@/etc/rc.func -- Run-Command Helper Functions
 ##  Copyright (c) 2000-2012 OpenPKG GmbH <http://openpkg.com/>
 ##
 ##  This software is property of the OpenPKG GmbH, DE MUC HRB 160208.
 ##  All rights reserved. Licenses which grant limited permission to use,
 ##  copy, modify and distribute this software are available from the
 ##  OpenPKG GmbH.
 ##
 ##  THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
 ##  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 ##  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 ##  IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
 ##  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ##  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ##  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 ##  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 ##  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 ##  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 ##  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 ##  SUCH DAMAGE.
 ##
 ##
 ##  NOTICE: This script is a collection of reusable shell functions
 ##  running under GNU Bash during the execution of OpenPKG run-command
 ##  sections.
 ##
 #
 #   rcMsg (display message)
 #
 #   Usage:       rcMsg [-e] [-w] <message>
 #   Example:     rcMsg -e "invalid command line"
 #   Description: display a regular/warning/error message.
 #
 rcMsg () {
     local prefix="rc:"
     while [ $# -gt 0 ]; do
         case $1 in
             -e ) prefix="${prefix}ERROR:";   shift ;;
             -w ) prefix="${prefix}WARNING:"; shift ;;
             *  ) break ;;
         esac
     done
     echo "${prefix} $*"
     return 0
 }
 #
 #   rcPath (manipulate colon-separated PATH-style variable)
 #
 #   Usage:       rcPath [-a] [-r] [-p] [-e] <var> <dir> [<dir> ...]
 #   Example:     rcPath -a -e PATH /bin /sbin /usr/bin /usr/sbin /usr/ccs/bin
 #   Description: removes (-r) or adds (-a) by appending or prepending
 #                (-p) one or more directories <dir> (optionally have
 #                to be existing if -e is given) to a colon-separated
 #                PATH-style variable <var>. In case a directory already
 #                exists, it is first removed.
 #
 rcPath () {
     local mode=""
     local prepend=0
     local exists=0
     while [ $# -gt 0 ]; do
         case $1 in
             -a ) mode="add";    shift ;;
             -r ) mode="remove"; shift ;;
             -p ) prepend=1;     shift ;;
             -e ) exists=1;      shift ;;
             *  ) break                ;;
         esac
     done
     local var="$1"
     shift
     if [ ".${mode}" = .add ]; then
         local edit_del=""
         local edit_add=""
         local dir
         for dir in "$@"; do
             if [ ".${exists}" = .1 ] && [ ! -d "${dir}" ]; then
                 continue
             fi
             edit_del="${edit_del} -e 's;^${dir}\$;;' -e 's;^${dir}:;;'"
             edit_del="${edit_del} -e 's;:${dir}:;:;' -e 's;:${dir}\$;;'"
             if [ ".${prepend}" = .0 ]; then
                 edit_add="${edit_add} -e 's;\$;:${dir};'"
             else
                 edit_add="-e 's;^;${dir}:;' ${edit_add}"
             fi
         done
         if [ ".${edit_del}${edit_add}" != . ]; then
             eval "${var}=\`echo \"\$${var}\" | sed ${edit_del} ${edit_add}\`"
         fi
         return 0
     elif [ ".${mode}" = .remove ]; then
         local edit=""
         local dir
         for dir in "$@"; do
             edit="${edit} -e 's;^${dir}\$;;' -e 's;^${dir}:;;'"
             edit="${edit} -e 's;:${dir}:;:;' -e 's;:${dir}\$;;'"
         done
         eval "${var}=\`echo \"\$${var}\" | sed ${edit}\`"
         return 0
     else
         rcMsg -e "rcPath: neither add (-a) nor remove (-r) operation specified"
         return 1
     fi
 }
 #
 #   rcTmp (temporary file handling)
 #
 #   Usage:       rcTmp [-i] [-f [-n <name>]] [-k]
 #   Example:     rcTmp -i; tmpfile=`rcTmp -f -n tmp`; ...; rcTmp -k
 #   Description: ???
 #
 rcTmp () {
     local mode=""
     local name=""
     while [ $# -gt 0 ]; do
         case $1 in
             -i ) mode="init"; shift        ;;
             -f ) mode="file"; shift        ;;
             -k ) mode="kill"; shift        ;;
             -n ) name="$2";   shift; shift ;;
             *  ) break                     ;;
         esac
     done
     if [ ".${mode}" = .init ]; then
         if [ ".${RC_TMPDIR}" = . ]; then
             local i=0
             while [ ${i} -lt 10 ]; do
                RC_TMPDIR="@l_prefix@/RPM/TMP/rc-`date '+%Y%m%d%H%M%S'`-$$"
                (umask 022; mkdir ${RC_TMPDIR} >/dev/null 2>&1) && break
                i=$((${i} + 1))
                sleep 1
             done
             if [ ${i} -eq 10 ]; then
                 rcMsg -e "rcTmp: unable to establish secure temporary directory" 1>&2
                 return 1
             fi
             declare -r RC_TMPDIR
         fi
         return 0
     elif [ ".${mode}" = .file ]; then
         echo "${RC_TMPDIR}/${name:-tmp}"
         return 0
     elif [ ".${mode}" = .kill ]; then
         if [ ".${RC_TMPDIR}" = . ]; then
             rcMsg -e "rcTmp: no secure temporary directory known"
             return 1
         else
             rm -rf ${RC_TMPDIR}
             return 0
         fi
     else
         rcMsg -e "rcTmp: neither init (-i), file (-f) nor kill (-k) operation specified"
         return 1
     fi
 }
 #
 #   rcService (check for service status enable/active/usable)
 #
 #   Usage:       rcService <pkg> <service> <val>
 #   Example:     if rcService openssh enable yes; then ...
 #   Description: check <service> of package <pkg> against value <val>.
 #                <service> has to be one of "enable", "active" or "usable".
 #                <val> has to be either "no", "yes", or "unknown".
 #
 rcService () {
     local pkg="`echo ${1} | sed -e 's;-;_;g'`"
     local var="${pkg}_${2}"
     local chk="${3}"
     eval "local val=\$${var}"
     if [ ".${val}" = . ]; then
         eval `@l_prefix@/bin/openpkg rc 2>/dev/null --silent ${1} status || true`
         eval "local val=\$${var}"
     fi
     if [ ".${val}" = ".${chk}" ]; then
         return 0
     else
         return 1
     fi
 }
 #
 #   rcVarIsYes (check variable for positive value)
 #
 #   Usage:       rcVarIsYes <var>
 #   Example:     if rcVarIsYes foo; then ...
 #   Description: check whether a variable <var> contains a positive
 #                value, i.e., the values "yes", "true", "on" or "1" in
 #                arbitrary lower or upper case.
 #
 rcVarIsYes () {
     local var="${1}"
     eval "local val=\"\$${var}\""
     case "${val}" in
         [Yy][Ee][Ss] | [Tt][Rr][Uu][Ee] | [Oo][Nn] | 1 )
             return 0
             ;;
         * )
             return 1
             ;;
     esac
 }

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openpkg/rc.func@300d43423c2e (annotated)

openpkg/rc.func