#!/bin/sh
# $Id$
# Copyright (c) 2006 Eric Hameleers <alien@slackware.com>
# Distributed under the terms of the GNU General Public License, Version 2
# ---------------------------------------------------------------------------
# Slackware SlackBuild script
# ===========================
# By:        Eric Hameleers <alien@slackware.com>
# For:       Icecast
# URL:       http://www.icecast.org/
# Summary:   Xiph Streaming media server that supports
#            multiple audio formats (and theora video streams too).
# Needs:     libvorbis, libogg, libxml2, curl
# Changelog:
# 2.0.0-1:   16/jan/2004 by Eric Hameleers
# 2.0.0-2:   17/jan/2004 by Eric Hameleers
#            Bug fix in the rc.icecast script
# 2.0.0-3:   22/apr/2004 by Eric Hameleers
#            Add "next" operatrion to rc.icecast
# 2.0.2-1:   20/oct/2004 by Eric Hameleers
#            Rebuilt new releease.
# 2.2.0-1:   01/jan/2005 by Eric Hameleers
#            Rebuilt new releease.
# 2.2.0-2:   11/aug/2005 by Eric Hameleers
#            Add "current" and "status" to rc.icecast parameters.
#            Make sure that existing /etc/rc.d/rc.icecast isn't overwritten.
# 2.2.0-3:   17/sep/2005 by Eric Hameleers
#            Forgot to add "current" to rc.icecast 'help' output
#            (i.e. run rc.icecast with no parameters).
# 2.3.0-1:   04/oct/2005 by Eric Hameleers
#            New release.
# 2.3.1-1:   28/feb/2006 by Eric Hameleers <alien@sox.homeip.net>
#            New release.
#
# ---------------------------------------------------------------------------
#
# Set initial variables:
CWD=`pwd`
if [ "$TMP" = "" ]; then
  TMP=/tmp
fi

PRGNAM=icecast
VERSION=2.3.1
ARCH=i486
BUILD=1

PKG=$TMP/package-$PRGNAM

if [ ! -d $TMP/tmp-$PRGNAM ]; then
  mkdir -p $TMP/tmp-$PRGNAM # location to build the source
fi
if [ ! -d $PKG ]; then
  mkdir -p $PKG             # place for the package to be built
fi


# --- HELPER FUNCTIONS ---

#
# Function 'preconfig filename [remove]'
#
#   param1 (required) may be a wildcard;
#          in that case surround it with double quotes!
#   param2 (optional) has value 'remove'
#
# Description:
# Prepare the incoming configuration files which are not allowed
# to overwrite existing ones.
# These files will get a '.new' extension.
# An entry in the 'doinst.sh' script will be created for these files, copying
# the *.new files back to their original names,
# but only if the original names don't exist.
# Use the second parameter 'remove', like in 'preconfig filename(s) remove'
# to add a 'rm -f filename.new' in 'doinst.sh', so as not to clutter
# the harddisk with useless example files.

preconfig() {
  mkdir -p $PKG/install 2>/dev/null
  for infile in $1; do
    mv ${infile} ${infile}.new
  done
  echo -n "config \"$1.new\"" >> $PKG/install/doinst.sh
  # If there's a second parameter with value 'remove' add a 'rm filename.new'
  if [ "$2" = "remove" ]; then
    echo -n " ; rm -f $1.new" >> $PKG/install/doinst.sh
  fi
  echo ""  >> $PKG/install/doinst.sh
}


# --- PACKAGE BUILDING ---

echo "+==============+"
echo "| $PRGNAM-$VERSION |"
echo "+==============+"

iceuser=icecast
icegroup=icecast

rm -rf $PKG/*

# Explode the package framework:
cd $PKG
if [ -f $CWD/_$PRGNAM.tar.gz ]; then
  explodepkg $CWD/_$PRGNAM.tar.gz
fi

cd $TMP/tmp-$PRGNAM

# Extract tar ball in TEMP dir
echo Building $PRGNAM...
tar -zxvf $CWD/$PRGNAM-$VERSION.tar.gz
cd $PRGNAM-$VERSION
./configure --prefix=/usr --sysconfdir=/usr/share/icecast/etc \
            --localstatedir=/var \
            2>&1 | tee $CWD/configure-${PRGNAM}.log

make 2>&1 | tee $CWD/make-${PRGNAM}.log

# Install all the needed stuff to the package dir
# Use installwatch if available:
which installwatch > /dev/null 2>&1
if [ $? == 0 ]; then
  installwatch -o $CWD/install-${PRGNAM}.log make DESTDIR=$PKG install
else
  make DESTDIR=$PKG install 2>&1 |tee $CWD/install-${PRGNAM}.log
fi

mkdir -p $PKG/var/log/icecast
(cd $PKG/usr/share/icecast/etc && patch -p0 < $CWD/icecast_conf.patch)


# --- DOCUMENTATION ---

# Compress the man page
gzip -9 $PKG/usr/man/*/*

# Copy the documentation
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
mv $PKG/usr/share/doc/icecast/* $PKG/usr/doc/$PRGNAM-$VERSION/
rm -r $PKG/usr/share/doc
chmod -R -w $PKG/usr/doc/$PRGNAM-$VERSION


# --- POST-INSTALL SCRIPT ---

# --- Fabricate the 'doinst.sh' script: ------
mkdir -p $PKG/install

cat <<EOINS > $PKG/install/doinst.sh
# Handle the incoming configuration files:
config() {
  for infile in \$1; do
    NEW="\$infile"
    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...
  done
}

# Take care of rc.icecast
config etc/rc.d/rc.icecast.new

#Add the '${icegroup}' group if it doesn't exist already
groupadd ${icegroup} 2> /dev/null
#Add the '${iceuser}' user if it doesn't exist already
useradd -c "Icecast" -d /usr/share/icecast \\
        -g ${icegroup} -s "/bin/false" ${iceuser} 2> /dev/null

# Configure the home directory
mkdir -p usr/share/icecast
chown -R ${iceuser}:${icegroup} usr/share/icecast
chmod 750 usr/share/icecast

# Configure the log directory
mkdir -p var/log/icecast
chown -R ${iceuser} var/log/icecast
chmod 750 var/log/icecast

#
# Update rc.local so that Icecast will be started on boot
#
if ! grep "rc.icecast" etc/rc.d/rc.local 1>/dev/null 2>&1 ; then
  cat <<-_EOM_ >> etc/rc.d/rc.local
	
	if [ -x /etc/rc.d/rc.icecast ]; then
	  # Start Icecast server
	  echo "Starting icecast:    /etc/rc.d/rc.icecast start"
	  /etc/rc.d/rc.icecast start
	fi
	_EOM_
fi

EOINS

# --- End of 'doinst.sh' script -----------

# Finally, take care of the configuration files:
# Rename those files which must not overwrite existing ones when the package
# is installed. Corresponding entries will be created at the end of
# the 'doinst.sh' script.
(cd $PKG ; preconfig usr/share/icecast/etc/$PRGNAM.xml)
echo "" >> $PKG/install/doinst.sh


# --- OWNERSHIP, RIGHTS ---
chown -R root.root $PKG

find $PKG  -type f -name "*~" -exec rm -f {} \;

# --- PACKAGE DESCRIPTION ---
mkdir -p $PKG/install
cat $CWD/icecast.slack-desc > $PKG/install/slack-desc


# --- BUILDING ---

# Build the package and compute its md5 checksum:
cd $PKG
makepkg --linkadd y --chown n $TMP/$PRGNAM-$VERSION-$ARCH-$BUILD.tgz
(cd $TMP && md5sum $PRGNAM-$VERSION-$ARCH-$BUILD.tgz > $PRGNAM-$VERSION-$ARCH-$BUILD.tgz.md5)
cat $PKG/install/slack-desc | grep "^${PRGNAM}" > $TMP/$PRGNAM-$VERSION-$ARCH-$BUILD.txt
 

# --- CLEANUP ---

# Clean up the extra stuff:
if [ "$1" = "--cleanup" ]; then
  rm -rf $TMP/tmp-$PRGNAM
  rm -rf $PKG
else
  echo You can check the 'installwatch' log file: $CWD/install-${PRGNAM}.log
fi

#
# EOF
#