OpenPKG Specs / file revision

 #!/bin/sh

 ##

 ##  OpenPKG Source Bootstrap Package (self-extracting shell script)

 ##  Copyright (c) 2000-2007 OpenPKG Foundation e.V. <http://openpkg.net/>

 ##  Copyright (c) 2000-2007 Ralf S. Engelschall <http://engelschall.com/>

 ##

 ##  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.

 ##

 ##  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.

 ##

 #   configuration

 l_me="$0"

 o_help=no

 o_version=no

 o_tar=no

 l_prefix='/openpkg'

 l_dir='@l_dir@'

 l_release="@l_release@"

 l_version="@l_version@"

 #   establish standard environment

 PATH="$PATH:/bin:/sbin:/usr/bin:/usr/sbin"

 LC_CTYPE=C

 export LC_CTYPE

 umask 022

 #   pre-parse command line options

 for opt

 do

     case $opt in

         -*=*) arg=`echo "$opt" | sed 's/^[-_a-zA-Z0-9]*=//'` ;;

            *) arg='' ;;

     esac

     case $opt in

         -h | --help     ) o_help=yes    ;;

         -v | --version  ) o_version=yes ;;

         -t | --tar      ) o_tar=yes     ;;

         --prefix=*      ) l_prefix=$arg ;;

     esac

 done

 if [ ".$o_help" = .yes ]; then

     echo "Usage: sh $l_me" 2>&1

     echo "       [--prefix=<prefix>] [--tag=<str>]" 2>&1

     echo "       [--user=<usr>] [--group=<grp>]" 2>&1

     echo "       [--{s,m,r,n}usr=<usr>] [--{s,m,r,n}grp=<grp>]" 2>&1

     echo "       [--{s,m,r,n}uid=<uid>] [--{s,m,r,n}gid=<gid>]" 2>&1

     echo "       [--use_tar=<tar>] [--use_make=<make>] [--use_cc=<cc>]" 2>&1

     echo "       [--use_ar=<ar>] [--use_ld=<ld>] [--use_as=<as>] [--use_strip=<strip>]" 2>&1

     echo "       [-t|--tar] [-h|--help] [-v|--version]" 2>&1

     exit 1

 fi

 #   make sure all essential unpacking tools are available

 #   (the build tools are checked later from within openpkg.spec)

 for tool in /bin/sh mkdir cat tar rm chown chgrp sed dd; do

     found=no

     case $tool in

         /* )

             if [ -f $tool ]; then

                 found=yes

             fi

             ;;

         * )

             for p in `IFS=:; echo $PATH`; do

                 if [ -f "$p/$tool" ]; then

                     found=yes

                     break

                 fi

             done

             ;;

     esac

     if [ ".$found" = .no ]; then

         echo "$l_me:ERROR: unable to find bootstrap tool \"$tool\"" 1>&2

         exit 1

     fi

 done

 #   optionally extract the embedded tarball only

 if [ ".$o_tar" = .yes ]; then

     dd if=$l_me bs=8192 skip=8 2>/dev/null

     exit 0

 fi

 #   display version and copyright header

 echo "OpenPKG ${l_release} Source Bootstrap Package, version ${l_version}"

 if [ ".$o_version" = .yes ]; then

     exit 0

 fi

 echo "Building for prefix ${l_prefix} on current platform"

 #   determine current user/group

 cusr=`(id -un) 2>/dev/null ||\

       (id | sed -e 's;^[^(]*(\([^)]*\)).*;\1;') 2>/dev/null ||\

       (whoami) 2>/dev/null ||\

       (who am i | cut "-d " -f1) 2>/dev/null ||\

       echo $LOGNAME`

 cgid=`(id -g $cusr) 2>/dev/null ||\

       ((getent passwd "${cusr}"; grep "^${cusr}:" /etc/passwd; ypmatch "${cusr}" passwd; nismatch "${cusr}" passwd; nidump passwd . | grep "^${cusr}:") 2>/dev/null |\

       sed -e 'q' | awk -F: '{ print $4; }')`

 cgrp=`(id -gn $cusr) 2>/dev/null ||\

       ((getent group; cat /etc/group; ypcat group; niscat group; nidump group .) 2>/dev/null | grep "^[^:]*:[^:]*:${cgid}:" |\

       sed -e 'q' | awk -F: '{ print $1; }')`

 if [ ".$cgrp" = . ]; then

     cgrp="$cusr"

 fi

 #   extract the source distribution files

 echo "++ extracting OpenPKG source distribution"

 rm -rf $l_dir >/dev/null 2>&1

 mkdir $l_dir || exit 1

 dd if=$l_me bs=8192 skip=8 2>/dev/null | (cd $l_dir; tar xf - 2>/dev/null)

 if [ ".$cusr" = .root ]; then

     ( cd $l_dir || exit 1

       chown -R -h $cusr . >/dev/null 2>&1 || true

       chgrp -R -h $cgrp . >/dev/null 2>&1 || true

     ) || exit 1

 fi

 if [ ! -f $l_dir/openpkg.boot ]; then

     echo "$l_me:ERROR: failed to unpack into directory \"$l_dir\"" 1>&2

     exit 1

 fi

 #   perform bootstrap procedure

 echo "++ building OpenPKG binary distribution"

 ( cd $l_dir || exit 1

   ./openpkg.boot ${1+"$@"} || exit 1

 ) || exit 1

 #   cleanup

 rm -rf $l_dir >/dev/null 2>&1

 #   die explicitly just before the shell would discover

 #   that we carry mega-bytes of data with us...

 exit 0

 #   the distribution tarball is appended in raw format directly to the

 #   end of this script, just leaded by padding whitespaces which make

 #   sure that the tarball data starts at the pre-defined offset of 64KB.

 #   This allows us to unpack the tarball by just skipping the leading

 #   64KB (= 8192*8, see above).