#!/bin/bash

# Slackware build script for NSD, Authoritative DNS server

# Copyright (c) 2017-2020 Sergey Fedosov <eleksir@gmail.com>
# 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.

PRGNAM=nsd
USER=$PRGNAM
GROUP=$PRGNAM
VERSION=${VERSION:-4.3.3}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

if ! grep -q "^nsd:" /etc/group; then
        echo "$0: Error: $PRGNAM group ($GROUP) doesn't exist."
        echo "$0: Try creating one with:"
        echo " # groupadd -g 336 $GROUP"
        exit 1
fi

if ! grep -q "^nsd:" /etc/passwd; then
        echo "$0: Error: $PRGNAM user ($GROUP) doesn't exist."
        echo "$0: Try creating one with:"
        echo " # useradd -u 336 -d /var/lib/$USER -g $GROUP -s /bin/false $USER"
        exit 1
fi

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

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

set -e

rm -rf "$PKG"
mkdir -p "$TMP" "$PKG" "$OUTPUT"
cd "$TMP"
rm -rf "$PRGNAM-$VERSION"
tar xvf "$CWD/$PRGNAM-$VERSION.tar.gz"
cd "$PRGNAM-$VERSION"
#chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --bindir=/usr/bin \
  --sbindir=/usr/sbin \
  --libexecdir=/usr/libexec \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --libdir=/usr/lib \
  --enable-ratelimit \
  --enable-ratelimit-default-is-off \
  --with-nsd_conf_file="/etc/$PRGNAM/$PRGNAM.conf" \
  --with-configdir="/var/lib/$USER" \
  --with-logfile="/var/log/$PRGNAM/$PRGNAM.log" \
  --with-pidfile="/var/run/$PRGNAM/$PRGNAM.pid" \
  --with-dbfile="/var/lib/$USER/$PRGNAM.db" \
  --with-zonesdir="/var/lib/$USER/zones" \
  --with-xfrdfile="/var/lib/$USER/$PRGNAM.xfrd" \
  --with-zonelistfile="/var/lib/$USER/$PRGNAM.zones" \
  --with-xfrdir="/var/lib/$USER/xfrd" \
  --with-user=$USER

make
make install DESTDIR="$PKG"

find "$PKG" -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

mv $PKG/usr/share/man $PKG/usr/
find "$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

# remove empty file
rm -rf "$PKG/etc/$PRGNAM/$PRGNAM.conf.sample"

install -Dpm 0644 "$CWD/$PRGNAM.SlackBuild" "$PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild"
install -Dpm 0644 "$CWD/slack-desc" "$PKG/install/slack-desc"
install -Dpm 0644 "$CWD/doinst.sh" "$PKG/install/doinst.sh"
install -Dpm 0644 "$CWD/rc.$PRGNAM" "$PKG/etc/rc.d/rc.$PRGNAM.new"
install -Dpm 0644 "$CWD/$PRGNAM.conf" "$PKG/etc/$PRGNAM/${PRGNAM}.conf.new"
install -Dpm 0644 "$CWD/nsd.logrotate" "$PKG/etc/logrotate.d/nsd.new"
# add sample zone
install -Dpm 0644 "$CWD/localhost.zone" "$PKG/var/lib/$PRGNAM/zones/master/localhost.zone.new"

chown -R $USER:$GROUP "$PKG/var/lib/$USER"

mkdir -p "$PKG/var/run/$PRGNAM"
chown $USER:$GROUP "$PKG/var/run/$PRGNAM"

mkdir -p "$PKG/var/log/$PRGNAM"
chown $USER:$GROUP "$PKG/var/log/$PRGNAM"

cd "$PKG"
/sbin/makepkg -l y -c n "$OUTPUT/$PRGNAM-${VERSION}-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}"