#!/bin/bash
#
#  munin.build 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.
#
#  munin.build 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
#
# build script for munin
# by rhatto at riseup.net by rhatto | gpl
# 

#
# TODO: criacao de configuracoes padroes no /etc/munin
#       pegar mais plugins de vserver em http://svn.debian.org/wsvn/pkg-vserver/people/holger/munin-plugins/plugins/?rev=0&sc=0
#

if [ -s "slack-required" ]; then
  echo Recomended and required packages for building munin.build are:
  cat slack-required | sed -e 's/^/\t/'
  if [ "$INTERACT" != "no" ]; then
    echo If you dont have those installed, press Ctrl-C. Otherwise, hit ENTER.
    read crap
#  else
#    echo Sleeping 3 seconds...
#    sleep 3
  fi
fi

CWD="`pwd`"

if [ -f "/etc/slackbuildrc" ]; then
  source /etc/slackbuildrc
fi

if [ -f "~/.slackbuildrc" ]; then
  source ~/.slackbuildrc
fi

# default settings
PACKAGE="munin"
TMP=${TMP:=/tmp}
VERSION=${VERSION:=1.2.5}
ARCH=${ARCH:=i386}
BUILD=${BUILD:=3rha}
SRC_DIR=${SRC:=$CWD}

# -------  error codes for 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

if ! grep -qe "^$PACKAGE:" /etc/passwd || ! grep -qe "^$PACKAGE:" /etc/group; then
  echo "WARNING: user and/or group $PACKAGE does not exist"
  echo "Create it manually with \"groupadd $PACKAGE ; useradd $PACKAGE -g $PACKAGE\" and run this script again."
  exit 1
fi

cat << EOCAT
Attention: be sure that theres no munin installed on this system, otherwiser installation
procedure will fail to copy plugins to their right place. Please uninstall any munin packages
before continue.

EOCAT

if [ "$INTERACT" != "no" ]; then
  echo Hit enter to proceed.
  read garbage
fi

if [ "$ARCH" == "x86_64" ]; then
  LIBDIR=/usr/lib64
else
  LIBDIR=/usr/lib
fi

RTOOL="wget"
PACKAGE_EXT="gz"
SRC="$PACKAGE"_"$VERSION.tar.$PACKAGE_EXT"
URL="http://easynews.dl.sourceforge.net/sourceforge/$PACKAGE/$SRC"

SRC_DIR="$SRC_DIR/$PACKAGE"

if [ ! -d "$SRC_DIR" ]; then
  mkdir -p $SRC_DIR
fi

if [ "$RTOOL" == "wget" ] && [ ! -f "$SRC_DIR/$SRC" ]; then
 rm -f $SRC_DIR/$SRC
 wget "$URL" -O "$SRC_DIR/$SRC" || exit $ERROR_WGET
fi

TMP="$TMP/$PACKAGE"

if [ ! -d "$TMP" ]; then
  mkdir -p $TMP
fi

cd $TMP

tar xvf $SRC_DIR/$SRC || exit $ERROR_TAR
cd $PACKAGE-$VERSION

# config and install!

mkdir -p /install

sed -e 's/PREFIX     = $(DESTDIR)\/opt\/munin/PREFIX     = $(DESTDIR)\/usr/' \
    -e 's/CONFDIR    = $(DESTDIR)\/etc\/opt\/munin/CONFDIR    = $(DESTDIR)\/etc\/munin/' \
    -e 's/DBDIR      = $(DESTDIR)\/var\/opt\/munin/DBDIR      = $(DESTDIR)\/var\/munin/' \
    -e 's/LIBDIR     = $(PREFIX)\/lib/LIBDIR     = $(PREFIX)\/lib\/munin/' \
    -e 's/HTMLDIR    = $(PREFIX)\/var\/www/HTMLDIR    = \/var\/www/' \
    -e 's/CGIDIR     = $(HTMLDIR)\/cgi/CGIDIR     = $(HTMLDIR)\/cgi-bin/' Makefile.config > Makefile.config.new

mv Makefile.config.new Makefile.config

make install-main || exit $ERROR_INSTALL
make install-doc install-man || exit $ERROR_INSTALL
make install-node install-node-plugins || exit $ERROR_INSTALL

# make the package

cp $CWD/plugins/* /usr/lib/munin/plugins/
chmod 755 /usr/lib/munin/plugins/*

mkdir -p /etc/munin/plugin{s,-conf.d}
mv /etc/munin/munin.conf /etc/munin/munin.conf.sample
mv /etc/munin-node.conf /etc/munin-node.conf.sample

mkdir -p /etc/rc.d
cp $CWD/rc.munin-node /etc/rc.d/rc.munin-node.new

cat << EOF > /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-----------------------------------------------------|
munin: munin (system to gather and graph all sorts of information)
munin: 
munin: Munin the tool surveys all your computers and remembers what it saw.
munin: It presents all the information in in graphs through a web interface.
munin: Its emphasis is on plug and play capabilities. After completing a
munin: installation a high number of monitoring plugins will be playing with 
munin: no more effort. Using Munin you can easily monitor the performance of 
munin: your computers, networks, SANs, and quite possibly applications as 
munin: well. It makes it easy to determine "what's different today" when 
munin: a performance problem crops up. It makes it easy to see how you're 
munin: doing capacity wise on all limited resources.
EOF

echo '( chroot . /sbin/ldconfig )' > /install/doinst.sh
echo '( if ! grep -qe "^munin:" etc/group; then echo creating group munin ; chroot . /usr/sbin/groupadd munin; fi )' >> /install/doinst.sh
echo '( if ! grep -qe "^munin:" etc/passwd; then echo creating user munin ; chroot . /usr/sbin/useradd munin -g munin; fi )' >> /install/doinst.sh
echo '( if [ ! -f "etc/rc.d/rc.munin-node" ]; then mv etc/rc.d/rc.munin-node.new etc/rc.d/rc.munin-node; fi )' >> /install/doinst.sh
echo '( mkdir -p var/log/munin var/run/munin var/munin )' >> /install/doinst.sh
echo '( chroot . /usr/bin/chown munin.munin /var/log/munin /var/run/munin /var/munin )' >> /install/doinst.sh