#!/bin/bash
#
#  nagios.SlackBuild is free software; you can redistribute
#  it and/or modify it under the terms of the GNU General Public
#  License as published by the Free Software Foundation; either
#  version 2 of the License, or any later version.
#
#  nagios.SlackBuild is distributed in the hope that it
#  will be useful, but WITHOUT ANY WARRANTY; without even the
#  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
#  PURPOSE.  See the GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public
#  License along with this program; if not, write to the Free
#  Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
#  MA 02111-1307, USA
#
# SlackBuild for Nagios
# http://www.nagios.org/
#
# Author: Luis ( luis at riseup d0t net )
#

# Look for slackbuildrc
if [ -f ~/.slackbuildrc ]; then
  source ~/.slackbuildrc
elif [ -f /etc/slackbuildrc ]; then
  source /etc/slackbuildrc
fi

# Set variables
CWD="$(pwd)"
SRC_NAME="nagios"
PKG_NAME="nagios"
ARCH=${ARCH:=i486}
SRC_VERSION=${VERSION:=3.0.6}
PKG_VERSION="$(echo "$SRC_VERSION" | tr '[[:blank:]-]' '_')"
BUILD=${BUILD:=1ls}
SRC_DIR=${SRC_DIR:=$CWD}/$PKG_NAME
TMP=${TMP:=/tmp}
PKG=${PKG:=$TMP/package-$PKG_NAME}
REPOS=${REPOS:=$TMP}
PREFIX=${PREFIX:=/usr/local/nagios}
PKG_WORK="$TMP/$SRC_NAME"
CONF_OPTIONS=${CONF_OPTIONS:=--with-nagios-user=nobody --with-nagios-group=nobody --with-command-group=nobody}
NUMJOBS=${NUMJOBS:=-j3}

# Set optmization flags based on $ARCH
if [ "$ARCH" = "i386" ]; then
  SLKCFLAGS="-O2 -march=i386 -mcpu=i686"
elif [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mcpu=i686"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686"
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2"
fi

# Set error codes (used by createpkg)
ERROR_WGET=31;      ERROR_MAKE=32;      ERROR_INSTALL=33
ERROR_MD5=34;       ERROR_CONF=35;      ERROR_HELP=36
ERROR_TAR=37;       ERROR_MKPKG=38;     ERROR_GPG=39
ERROR_PATCH=40;     ERROR_VCS=41;       ERROR_MKDIR=42

# Clean up any leftovers of previous builds
rm -rf "$PKG_WORK" 2> /dev/null
rm -rf "$PKG" 2> /dev/null

# Create directories if necessary
mkdir -p "$SRC_DIR" || exit $ERROR_MKDIR
mkdir -p "$PKG" || exit $ERROR_MKDIR
mkdir -p "$REPOS" || exit $ERROR_MKDIR
mkdir -p "$PKG_WORK" || exit $ERROR_MKDIR

# Dowload source if necessary
SRC="$SRC_NAME-$SRC_VERSION.tar.gz"
URL="http://downloads.sourceforge.net/nagios/$SRC"

if [ ! -s "$SRC_DIR/$SRC" ] || ! gzip -t "$SRC_DIR/$SRC" 2> /dev/null; then
  wget "$URL" -O "$SRC_DIR/$SRC" || exit $ERROR_WGET
fi

# Untar
cd "$PKG_WORK"
tar --no-same-owner --no-same-permissions -xvf "$SRC_DIR/$SRC" || exit $ERROR_TAR
PKG_SRC=`ls -l | awk '/^d/ { print $8 }'`
cd "$PKG_SRC"

# Configure
CFLAGS="$SLKCFLAGS" \
  CXXFLAGS="$SLKCFLAGS" \
  ./configure \
  --prefix="$PREFIX" $CONF_OPTIONS || exit $ERROR_CONF

# Compile
make $NUMJOBS all || exit $ERROR_MAKE

# Install
make install DESTDIR="$PKG" || exit $ERROR_INSTALL
make install-init DESTDIR="$PKG" || exit $ERROR_INSTALL
make install-commandmode DESTDIR="$PKG" || exit $ERROR_INSTALL
make install-config DESTDIR="$PKG" || exit $ERROR_INSTALL
mv "$PKG/etc/rc.d/init.d/nagios" "$PKG/etc/rc.d/rc.nagios.new"
rmdir "$PKG/etc/rc.d/init.d"
( cd "$PKG/$PREFIX"/etc
  for file in $(ls -1); do
    if [ -f "$file" ]; then
      mv "$file" "$file".new
    fi
  done
  cd objects
  for file in $(ls -1); do
    mv "$file" "$file".new
  done
)

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

# Install documentation
DOCS="Changelog INSTALLING LEGAL LICENSE README THANKS UPGRADING"
mkdir -p "$PKG/usr/doc/$PKG_NAME-$PKG_VERSION" || exit $ERROR_MKDIR
cp -a $DOCS "$PKG/usr/doc/$PKG_NAME-$PKG_VERSION" 2> /dev/null

# Add package description (slack-desc)
mkdir -p "$PKG/install" || exit $ERROR_MKDIR
cat << EODESC > "$PKG/install/slack-desc"
# HOW TO EDIT THIS FILE:
# The "handy ruler" below makes it easier to edit a package description.  Line
# up the first '|' above the ':' following the base package name, and the '|'
# on the right side marks the last column you can put a character in.  You must
# make exactly 11 lines for the formatting to be correct.  It's also
# customary to leave one space after the ':'.

      |-----handy-ruler------------------------------------------------------|
nagios: nagios
nagios:
nagios: Nagios can monitor hosts and services on your network. It has the
nagios: ability to email or page you when a problem arises and when it is
nagios: resolved. In order for Nagios to be of any use, you will need its
nagios: plugins.
nagios:
nagios: For more information about nagios, http://www.nagios.org/
nagios: And for more information about its plugins, http://nagiosplugins.org/
nagios:
nagios:
EODESC

# Add a post-installation script (doinst.sh)
cat << EOSCRIPT > "$PKG/install/doinst.sh"
config() {
  NEW="\$1"
  OLD="\$(dirname \$NEW)/\$(basename \$NEW .new)"
  # If there's no config file by that name, mv it over:
  if [ ! -r \$OLD ]; then
    mv \$NEW \$OLD
  elif [ "\$(cat \$OLD | md5sum)" = "\$(cat \$NEW | md5sum)" ]; then
    # toss the redundant copy
    rm \$NEW
  fi
  # Otherwise, we leave the .new copy for the admin to consider...
}

config etc/rc.d/rc.nagios.new
for file in \$(ls -1 "$PREFIX"/etc/*.new); do
  config \$file
done

echo
echo " \"Important: Installing and configuring Nagios is rather"
echo " involved. You can't just compile the binaries, run the"
echo " program and sit back. There's a lot to setup before you"
echo " can actually start monitoring anything. Relax, take your"
echo " time and read all the documentation - you're going to"
echo " need it.\""
echo
echo " Quoting: http://nagios.sourceforge.net/docs/2_0/"
echo
EOSCRIPT

# Build the package
cd "$PKG"
makepkg -l y -c n "$REPOS/$PKG_NAME-$PKG_VERSION-$ARCH-$BUILD.tgz" || exit $ERROR_MKPKG

# Delete source and build directories if requested
if [ "$CLEANUP" == "yes" ]; then
  rm -rf "$PKG_WORK" "$PKG"
fi