#!/bin/sh

# Slackware build script for zabbix_agentd

# Copyright 2013-2014 Michal Bialozor, Gdansk, Pomorskie, POLAND
# 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=zabbix_agentd
VERSION=${VERSION:-3.4.14}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

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

PRGSHORT=zabbix

ZABBIXUSER=${ZABBIXUSER:-zabbix}
ZABBIXGROUP=${ZABBIXGROUP:-zabbix}
ZABBIXUID=${ZABBIXUID:-228}
ZABBIXGID=${ZABBIXGID:-228}

ZABBIXAGENTUSER=${ZABBIXAGENTUSER:-zabbixagent}
ZABBIXAGENTGROUP=${ZABBIXAGENTGROUP:-zabbixagent}
ZABBIXAGENTUID=${ZABBIXAGENTUID:-266}
ZABBIXAGENTGID=${ZABBIXAGENTGID:-266}

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

set -e

# Bail out if user or group isn't valid on your system
# For slackbuilds.org, assigned zabbixagent uid/gid are 266/266 and assigned zabbix uid/gid are 228/228
# See http://slackbuilds.org/uid_gid.txt
if [ "$(grep ^$ZABBIXAGENTUSER: /etc/passwd)" = "" -o "$(grep ^$ZABBIXAGENTUSER: /etc/passwd)" = "" -o \
     "$(grep ^$ZABBIXGROUP: /etc/group)" = "" ] ; then
    echo "  You must have a \"$ZABBIXGROUP\" group as well as \"$ZABBIXUSER\" and \"$ZABBIXAGENTUSER\" users to run this script."
    echo "    # groupadd -g $ZABBIXGID $ZABBIXGROUP"
    echo "    # useradd -u $ZABBIXUID -g $ZABBIXGROUP -d /dev/null -s /bin/false $ZABBIXUSER"
    echo "    # useradd -u $ZABBIXAGENTUID -g $ZABBIXGROUP -d /dev/null -s /bin/false $ZABBIXAGENTUSER"
    exit 1
fi

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

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGSHORT-$VERSION
tar xvf $CWD/$PRGSHORT-$VERSION.tar.gz
cd $PRGSHORT-$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 \
  --sysconfdir=/etc/zabbix \
  --localstatedir=/var/lib \
  --mandir=/usr/man \
  --docdir=/usr/doc/$PRGNAM-$VERSION \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --enable-agent \
  --build=$ARCH-slackware-linux

make
make install DESTDIR=$PKG

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

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

# Initial log file
mkdir -p $PKG/var/log/$PRGSHORT
chown $ZABBIXUSER:$ZABBIXGROUP $PKG/var/log/$PRGSHORT
chmod g+w $PKG/var/log/$PRGSHORT
touch $PKG/var/log/$PRGSHORT/$PRGNAM.log.new
chown $ZABBIXAGENTUSER:$ZABBIXUSER $PKG/var/log/$PRGSHORT/$PRGNAM.log.new

# Dir for pid-file
mkdir -p $PKG/var/run/$PRGSHORT
chown -R $ZABBIXUSER:$ZABBIXGROUP $PKG/var/run/$PRGSHORT
chmod g+w $PKG/var/run/$PRGSHORT

# Configuration file
sed -e "s,# PidFile=/tmp/,PidFile=/var/run/$PRGSHORT/," \
    -e "s,LogFile=/tmp/,LogFile=/var/log/$PRGSHORT/," \
    $PKG/etc/$PRGSHORT/$PRGNAM.conf > $PKG/etc/$PRGSHORT/$PRGNAM.conf.new
rm -rf $PKG/etc/$PRGSHORT/zabbix_agent.conf.d $PKG/etc/$PRGSHORT/zabbix_agent.conf \
  $PKG/etc/$PRGSHORT/$PRGNAM.conf

# Init script
mkdir -p $PKG/etc/rc.d
sed "s|@ZABBIXAGENTUSER@|$ZABBIXAGENTUSER|" $CWD/rc.$PRGNAM > $PKG/etc/rc.d/rc.$PRGNAM.new

# Documentation
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a AUTHORS COPYING ChangeLog INSTALL NEWS README $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
cat $CWD/README.SLACKWARE > $PKG/usr/doc/$PRGNAM-$VERSION/README.SLACKWARE

# Installation scripts
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/doinst.sh > $PKG/install/doinst.sh

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