#!/bin/bash

# Copyright 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2018, 2019, 2020, 2021, 2023  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.

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

PKGNAM=bind
VERSION=${VERSION:-$(echo ${PKGNAM}-[0-9]*.tar.?z | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
BUILD=${BUILD:-1_slack15.0}

# 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

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PKGNAM-$(echo $VERSION | tr - _)-$ARCH-$BUILD.txz"
  exit 0
fi

NUMJOBS=${NUMJOBS:-" -j$(expr $(nproc) + 1) "}

TMP=${TMP:-/tmp}
PKG=$TMP/package-${PKGNAM}
rm -rf $PKG
mkdir -p $TMP $PKG/etc/default

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"
fi

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

# Make sure ownerships and permissions are sane:
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 {} \+

# Detect krb5:
if pkg-config --exists krb5-gssapi 1> /dev/null 2> /dev/null ; then
  GSSAPI=" --with-gssapi "
else
  GSSAPI=" "
fi

# Configure:
CFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --with-libtool \
  --with-libidn2 \
  --with-python=/usr/bin/python3 \
  --mandir=/usr/man \
  --enable-shared \
  --disable-static \
  --with-openssl=/usr \
  $GSSAPI \
  --build=$ARCH-slackware-linux || exit 1

# Build and install:
make $NUMJOBS || make || exit 1
make install DESTDIR=$PKG || exit 1

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

# These probably were not supposed to be installed:
find . -name .deps -exec rm -rf "{}" \;
find . -name .libs -exec rm -rf "{}" \;

# We like symlinks.
( cd $PKG/usr/sbin
  ln -sf named lwresd
)

# We like a lot of symlinks.
if [ -d $PKG/usr/man/man3 ]; then
  ( cd $PKG/usr/man/man3
    sh $CWD/3link.sh
  )
fi

# Install init script:
mkdir -p $PKG/etc/rc.d
cp -a $CWD/rc.bind $PKG/etc/rc.d/rc.bind.new
chmod 644 $PKG/etc/rc.d/rc.bind.new

# Install default options file for named:
cat $CWD/default.named > $PKG/etc/default/named.new

# Fix library perms:
chmod 755 $PKG/usr/lib${LIBDIRSUFFIX}/*

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

# Compress manual pages:
find $PKG/usr/man -type f -exec gzip -9 {} \+
for i in $( find $PKG/usr/man -type l ) ; do
  ln -s $( readlink $i ).gz $i.gz
  rm $i
done

# Add a documentation directory:
mkdir -p $PKG/usr/doc/${PKGNAM}-$VERSION
cp -a \
  CHANGES COPYRIGHT FAQ* README* \
  doc/arm doc/misc \
  $PKG/usr/doc/${PKGNAM}-$VERSION 

# This one should have the correct perms of the config file:
if [ -r $PKG/usr/doc/${PKGNAM}-$VERSION/misc/rndc.conf-sample ]; then
  chmod 644 $PKG/usr/doc/${PKGNAM}-$VERSION/misc/rndc.conf-sample
fi

# One format of this is plenty.  Especially get rid of the bloated PDF.
( cd $PKG/usr/doc/bind-$VERSION/arm
  rm -f Makefile* *.pdf *.xml README.SGML latex-fixup.pl
)

# Add sample config files for a simple caching nameserver:
mkdir -p $PKG/var/named/caching-example
cp -a $CWD/caching-example/named.conf $PKG/etc/named.conf.new
cp -a $CWD/caching-example/localhost.zone $PKG/var/named/caching-example/localhost.zone
cp -a $CWD/caching-example/named.local $PKG/var/named/caching-example/named.local
cp -a $CWD/caching-example/named.root $PKG/var/named/caching-example/named.root
# This name is deprecated, but having it here doesn't hurt in case
# an old configuration file wants it:
cp -a $CWD/caching-example/named.root $PKG/var/named/caching-example/named.ca
chown root:root $PKG/etc/named.conf.new
chmod 644 $PKG/var/named/caching-example/*

# Make sure that everything in /var/named is owned by named:named:
chown -R named:named $PKG/var/named

mkdir -p $PKG/install
zcat $CWD/doinst.sh.gz > $PKG/install/doinst.sh
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $TMP/${PKGNAM}-$(echo $VERSION | tr - _)-$ARCH-$BUILD.txz