#!/bin/bash

# Copyright 2023  Patrick J. Volkerding, Sebeka, Minnesota, 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.

cd $(dirname $0) ; CWD=$(pwd)

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

TMP=${TMP:-/tmp}
PKG=$TMP/package-glibc-incoming-tree

cd $TMP
rm -rf $PKGNAM-$VERSION
tar xvf $CWD/$PKGNAM-$VERSION.tar.?z || exit 1
cd $PKGNAM-$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 {} \+

# Configure, build, and install:
if [ ! -r configure ]; then
  if [ -x ./autogen.sh ]; then
    NOCONFIGURE=1 ./autogen.sh
  else
    autoreconf -vif
  fi
fi

# First, build and install the compat library:
mkdir build-libxcrypt-compat
cd build-libxcrypt-compat
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
../configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --mandir=/usr/man \
  --enable-hashes=strong,glibc \
  --enable-obsolete-api=glibc \
  --disable-failure-tokens \
  --build=$ARCH-slackware-linux || exit 1
make $NUMJOBS || make || exit 1
make install DESTDIR=$PKG || exit 1
cd ..

# Next, build the next-gen crypt library. We'll see what can link to it. :)
mkdir build-libxcrypt
cd build-libxcrypt
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
../configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --mandir=/usr/man \
  --enable-hashes=strong,glibc \
  --enable-obsolete-api=no \
  --disable-failure-tokens \
  --build=$ARCH-slackware-linux || exit 1
make $NUMJOBS || make || exit 1
make install DESTDIR=$PKG || exit 1
cd ..

# Don't ship .la files:
rm -f $PKG/{,usr/}lib${LIBDIRSUFFIX}/libcrypt*.la

# Strip binaries:
find $PKG -name "libcrypt*" | xargs file | grep -e "executable" -e "shared object" | grep ELF | cut -f 1 -d : | xargs strip -g 2> /dev/null

# Move libraries out of /usr:
mkdir -p $PKG/lib${LIBDIRSUFFIX}
( cd $PKG/usr/lib${LIBDIRSUFFIX}
  ## Actually, glibc always had libcrypt.a, so...
  ## No static crypt() libraries:
  #rm libcrypt*.a
  # No .so symlinks (yet):
  rm libcrypt*.so
  # Move libraries and remaining symlinks:
  mv libcrypt*so* ../../lib${LIBDIRSUFFIX}
  # Add .so symlinks for libcrypt and libxcrypt:
  ln -sf ../../lib${LIBDIRSUFFIX}/libcrypt.so.2 libcrypt.so
  ln -sf ../../lib${LIBDIRSUFFIX}/libcrypt.so.2 libxcrypt.so
)

# Add a documentation directory:
mkdir -p $PKG/usr/doc/${PKGNAM}-$VERSION
cp -a \
  AUTHORS* ChangeLog COPYING* LICENSING* NEWS* README* THANKS* TODO* \
  $PKG/usr/doc/${PKGNAM}-$VERSION

# If there's a ChangeLog, installing at least part of the recent history
# is useful, but don't let it get totally out of control:
if [ -r ChangeLog ]; then
  DOCSDIR=$(echo $PKG/usr/doc/${PKGNAM}-$VERSION)
  cat ChangeLog | head -n 1000 > $DOCSDIR/ChangeLog
  touch -r ChangeLog $DOCSDIR/ChangeLog
fi