#!/bin/sh

# Copyright 2007, 2013, 2015  Heinz Wiesinger, Amsterdam, The Netherlands
# Copyright 2008, 2009, 2010  Patrick J. Volkerding, Sebeka, MN, USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS 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 AUTHOR 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.

# Modified by Robby Workman <rworkman at slackware.com>


PKGNAM=libzip
VERSION=${VERSION:-$(echo $PKGNAM-*.tar.?z* | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
BUILD=${BUILD:-3_slack14.2}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i586 ;;
    arm*) export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) export ARCH=$( uname -m ) ;;
  esac
fi

NUMJOBS=${NUMJOBS:--j6}

CWD=$(pwd)
TMP=${TMP:-/tmp}
PKG=$TMP/package-libzip

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
elif [ "$ARCH" = "aarch64" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS=${SLKCFLAGS:-"-O2"}
  LIBDIRSUFFIX=${LIBDIRSUFFIX:-""}
fi

rm -rf $PKG
mkdir -p $TMP $PKG
cd $TMP
rm -rf libzip-$VERSION
tar xvf $CWD/libzip-$VERSION.tar.?z* || exit 1
cd libzip-$VERSION || exit 1
chown -R root:root .
find . \
 \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \;

zcat $CWD/libzip.CVE-2017-14107.diff.gz | patch -p1 --verbose || exit 1

# Fix configure to support shared libraries for PPC64LE and new architectures:
if [ -x /usr/share/libtool/build-aux/fix_configure ]; then
  /usr/share/libtool/build-aux/fix_configure  
fi

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --includedir=/usr/include \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --mandir=/usr/man \
  --disable-static \
  --build=$ARCH-slackware-linux || exit 1

# Fix symbolic linking for manpages
sed -i "s|\${LN}|\${LN_S}|g" man/Makefile

make $NUMJOBS || make || exit 1
make install DESTDIR=$PKG || exit 1

# While I perhaps see the motive for putting platform-specific include files
# in a place where they won't collide, the fact is that this breaks anything
# currently using libzip.  Adding a link to the standard include directory
# mostly fixes this, but it is still not optimal.  It's likely to cause
# problems on multilib systems, for example (but like that whole thing isn't
# an even uglier hack).
( cd $PKG/usr/include ; ln -sf ../lib${LIBDIRSUFFIX}/libzip/include/zipconf.h . )

find $PKG | xargs file | grep -e "executable" -e "shared object" \
  | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null

# Compress and link manpages, if any:
if [ -d $PKG/usr/man ]; then
  ( cd $PKG/usr/man
    for manpagedir in $(find . -type d -name "man*") ; do
      ( cd $manpagedir
        for eachpage in $( find . -type l -maxdepth 1 | grep -v '\.gz$') ; do
          ln -s $( readlink $eachpage ).gz $eachpage.gz
          rm $eachpage
        done
        gzip -9 *.?
      )
    done
  )
fi

# Now, fix the stupid symbolic manpage links again:
( cd $PKG/usr/man/man3
  find . -type l | while read link ; do
    LINKFILE=$(basename $link)
    LINKTARGET=$(basename $(readlink $LINKFILE))
    rm $LINKFILE
    ln -sf $LINKTARGET $LINKFILE
  done
)

mkdir -p $PKG/usr/doc/libzip-$VERSION
cp -a \
  AUTHORS COPYING* INSTALL NEWS README* THANKS TODO \
  $PKG/usr/doc/libzip-$VERSION

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $TMP/libzip-$VERSION-$ARCH-$BUILD.txz