#!/bin/sh
# $Id$
# Copyright (c) 2006 Eric Hameleers <alien@sox.homeip.net>
# 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.
# -----------------------------------------------------------------------------
# Slackware SlackBuild script 
# ===========================
# By:        Eric Hameleers
# For:       clamav
# URL:       http://clamav.net/
# Needs:     
# Changelog:
# 0.80-1:    30/nov/2004 by Eric Hameleers
#            * Initial build.
# 0.80-2:   02/dec/2004 by Eric Hameleers
#            * Fix permissions on "/var/run/clamav" directory
# 0.81-1:   02/feb/2005 by Eric Hameleers
#            * Rebuilt for new version
# 0.83-1:   15/feb/2005 by Eric Hameleers
#            * Rebuilt for new version
# 0.83-2:   15/feb/2005 by Eric Hameleers
#            * Patch freshclam.conf and clamav.conf for better package
#              defaults. Make rc.clamav executable. Add option to rc.clamav
#              to disable milter support.
# 0.84-1:   30/apr/2005 by Eric Hameleers
#            * Rebuilt for new version
# 0.85-1:   14/may/2005 by Eric Hameleers
#            * Add '--enable-id-check' to configure command.
# 0.85.1-1:  21/may/2005 by Eric Hameleers
#            * Rebuilt for the new release.
# 0.86.1-1:  27/jun/2005 by Eric Hameleers
#            * Rebuilt for the new release.
# 0.86.2-1:  27/jul/2005 by Eric Hameleers
#            * Rebuilt for the new release.
# 0.87-1:    16/sep/2005 by Eric Hameleers
#            * Rebuilt for the new release. Removed 'contrib' from the doc
#            directory as none of it makes any sense.
# 0.87.1-1:  08/nov/2005 by Eric Hameleers
#            * Rebuilt for the new release.
# 0.88-1:    10/jan/2006 by Eric Hameleers
#            * Rebuilt for the new release.
# 0.88.1-1:  04/apr/2006 by Eric Hameleers
#            * Rebuilt for the new release.
# 0.88.2-1:  29/may/2006 by Eric Hameleers
#            * Rebuilt for the new release.
# 0.88.2-2:  15/jun/2006 by Eric Hameleers
#            * Fixed permission for directory '/var/run/clamav' again
#              (it is now 771 so that the AllowSupplementaryGroups works)
# 0.88.3-1:  22/jul/2006 by Eric Hameleers
#            * Rebuilt for the new release. Since 'configure' now uses the new
#              DATAROOTDIR, explicitly configure the mandir.
# 0.88.4-1:  10/aug/2006 by Eric Hameleers
#            * Rebuilt for the new release.
# 0.88.5-1:  18/oct/2006 by Eric Hameleers
#            * Rebuilt for the new release.
# 0.88.6-1:  07/nov/2006 by Eric Hameleers
#            * Rew release. Patched the default value of 'DatabaseDirectory' in
#              the /etc/*.conf files to be '/usr/share/clamav', to reflect what
#              this package uses instead of '/var/lib/clamav'. Also correctly
#              creates clamav user/group and assigns ownership if the target
#              root is not that of the running machine (using chroot).
# 0.88.7-1:  13/dec/2006 by Eric Hameleers
#            * Rew release.
# 0.90-1:    14/feb/2007 by Eric Hameleers
#            * Rew release. Since clamav's .conf files changed quite a bit,
#              I had to re-do the .patch files.
# 0.90.1-1:  05/mar/2007 by Eric Hameleers
#            * Rew release.
# 0.90.2-1:  16/apr/2007 by Eric Hameleers
#            * Rew release.
# 
# Run 'sh clamav.SlackBuild --cleanup' to build a Slackware package.
# The package (.tgz) plus descriptive .txt file are created in /tmp .
# Install using 'installpkg'. 
#
# -----------------------------------------------------------------------------

# --- INIT ---
# Set initial variables:

PRGNAM=clamav
VERSION=${VERSION:-0.90.2}
ARCH=${ARCH:-i486}
BUILD=${BUILD:-1}

# Read "README.slackware" for compatibility with amavisd-new
CLAMUSR=clamav
CLAMGRP=clamav

# Where do we look for sources?
CWD=`pwd`
SRCDIR=`dirname $0`
[ "${SRCDIR:0:1}" == "." ] && SRCDIR=${CWD}/${SRCDIR}

# Place to build (TMP) package (PKG) and output (OUTPUT) the program:
TMP=${TMP:-/tmp/build}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

# Exit the script on errors:
set -e
trap 'echo "$0 FAILED at line $LINENO!" | tee $OUTPUT/error-${PRGNAM}.log' ERR
# Catch unitialized variables:
set -u
P1=${1:-1}

SOURCE="$SRCDIR/${PRGNAM}-${VERSION}.tar.gz"
SRCURL="http://dl.sourceforge.net/${PRGNAM}/${PRGNAM}-${VERSION}.tar.gz"

##
## --- with a little luck, you won't have to edit below this point --- ##
##

# Slackware 11 and up need other option (gcc > 3.3.x)
if [ `gcc -dumpversion | tr -d  '.' |cut -c 1-2` -gt 33 ]; then
  MOPT=tune
else
  MOPT=cpu
fi

case "$ARCH" in
  i386)      SLKCFLAGS="-O2 -march=i386 -m${MOPT}=i686"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
  i486)      SLKCFLAGS="-O2 -march=i486 -m${MOPT}=i686"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
  s390)      SLKCFLAGS="-O2"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
  powerpc)   SLKCFLAGS="-O2"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
  x86_64)    SLKCFLAGS="-O2 -fPIC"
             SLKLDFLAGS="-L/usr/lib64"; LIBDIRSUFFIX="64"
             ;;
  athlon-xp) SLKCFLAGS="-march=athlon-xp -O3 -pipe -fomit-frame-pointer"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
esac

if [ ! -d $TMP/tmp-$PRGNAM ]; then
  mkdir -p $TMP/tmp-$PRGNAM # location to build the source
elif [ "$P1" != "--oldbuild" ]; then
  # If the "--oldbuild" parameter is present, we keep
  #  the old build files and continue;
  # By default we remove the remnants of previous build and continue:
  rm -rf $TMP/tmp-$PRGNAM/*
fi

if [ "$PKG" = "" -o "$PKG" = "/" ] ; then
  echo "Please provide a sane value for the variable 'PKG'."
  exit 1
elif [ ! -d $PKG ]; then
  mkdir -p $PKG  # place for the package to be built
else
  rm -rf $PKG/*  # We always erase old package's contents:
fi

if [ ! -d $OUTPUT ]; then
  mkdir -p $OUTPUT  # place for the package to be saved
fi

# --- SOURCE FILE AVAILABILITY ---

if ! [ -f ${SOURCE} ]; then
  if ! [ "x${SRCURL}" == "x" ]; then
    # Check if the $SRCDIR is writable at all - if not, download to $OUTPUT
    [ -w "$SRCDIR" ] || SOURCE="$OUTPUT/`basename $SOURCE`"
    echo "Source '${SOURCE}' not available yet... will download now:"
    wget -nv -O "${SOURCE}" "${SRCURL}" || true
    if [ $? -ne 0 ]; then
      echo "Downloading '${SOURCE}' failed... aborting the build."
      mv -f "${SOURCE}" "${SOURCE}".FAIL
      exit 1
    fi
  else
    echo "File '${SOURCE}' not available... aborting the build."
    exit 1
  fi
fi

if [ "$P1" == "--download" ]; then
  echo "Download complete."
  exit 0
fi


# --- PACKAGE BUILDING ---

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

cd $TMP/tmp-$PRGNAM

echo "Extracting the source archive(s) for $PRGNAM..."
tar -xzvf $SOURCE

cd ${PRGNAM}-${VERSION}
chown -R root.root *


# --- BUILDING ---

echo Building ...

# We need the "clamav" user and group to exist at the time of
# configuring the software...
# Add the 'clamav' group if it doesn't already exist:
/usr/sbin/groupadd ${CLAMGRP} 2> /dev/null || true
# Add the 'clamav' user if it doesn't exist already:
/usr/sbin/useradd -c "ClamAV user" -g ${CLAMGRP} \
   -s "/bin/false" ${CLAMUSR} 2> /dev/null || true

LDFLAGS="$SLKLDFLAGS" \
CFLAGS="$SLKCFLAGS" \
./configure --prefix=/usr \
            --libdir=/usr/lib${LIBDIRSUFFIX} \
            --localstatedir=/var \
            --sysconfdir=/etc \
            --mandir=/usr/man \
            --with-user=${CLAMUSR} --with-group=${CLAMGRP} \
            --with-dbdir=/usr/share/clamav \
            --with-libcurl \
            --with-tcpwrappers \
            --enable-milter \
            --enable-id-check \
            --disable-static \
            2>&1 | tee $OUTPUT/configure-${PRGNAM}.log
make 2>&1 | tee $OUTPUT/make-${PRGNAM}.log

cd etc
patch < $SRCDIR/clamd.conf.patch 2>&1 | tee $OUTPUT/patch-${PRGNAM}.log
patch < $SRCDIR/freshclam.conf.patch 2>&1 | tee -a $OUTPUT/patch-${PRGNAM}.log
cd -

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

# Prepare the config files:
cd $PKG/etc
mv clamd.conf clamd.conf.new
mv freshclam.conf freshclam.conf.new
cd -

# Where to store the pid file:
mkdir -p $PKG/var/run/clamav

# Our rc script:
mkdir -p $PKG/etc/rc.d/
cp $SRCDIR/rc.clamav $PKG/etc/rc.d/rc.clamav.new
chown root:root $PKG/etc/rc.d/rc.clamav.new
chmod 754 $PKG/etc/rc.d/rc.clamav.new

# --- 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
}

config etc/freshclam.conf.new
config etc/clamd.conf.new
config etc/rc.d/rc.clamav.new

# Create log files
touch var/log/clamd.log
touch var/log/freshclam.log

# Only way to create and use the correct uid and gid on the target system,
# is to use chroot:
chroot . <<EOR 2>/dev/null
# Add the '${CLAMGRP}' group if it doesn't already exist:
# Actually, the use of "amavis" group is for compatibility with amavisd-new.
/usr/sbin/groupadd ${CLAMGRP} 2> /dev/null
# Add the '${CLAMUSR}' user if it doesn't already exist:
/usr/sbin/useradd -c "ClamAV user"  \\
        -g ${CLAMGRP} -s "/bin/false" ${CLAMUSR} 2> /dev/null

# Restore the correct permissions
chown ${CLAMUSR} usr/sbin/clamav-milter
chmod 4700 usr/sbin/clamav-milter
chown -R ${CLAMUSR}:${CLAMGRP} var/run/clamav
chmod 771 var/run/clamav
chown ${CLAMUSR}:${CLAMGRP} var/log/clamd.log
chmod 660 var/log/clamd.log
chown ${CLAMUSR}:${CLAMGRP} var/log/freshclam.log
chmod 660 var/log/freshclam.log
chown -R ${CLAMUSR}:${CLAMGRP} usr/share/clamav
chmod -R 770 usr/share/clamav
EOR

EOINS

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


# --- DOCUMENTATION ---

cp $SRCDIR/00README.slackware README.slackware
cp -a clamav-milter/INSTALL INSTALL.milter
DOCS="AUTHORS BUGS COPYING ChangeLog FAQ INSTALL NEWS README TODO UPGRADE \
      docs/*.pdf docs/html examples \
      INSTALL.milter \
      README.slackware"

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a $DOCS $PKG/usr/doc/$PRGNAM-$VERSION || true
chmod -R a-w $PKG/usr/doc/$PRGNAM-$VERSION/*

# Compress the man page(s)
find $PKG/usr/man -type f -name "*.?" -exec gzip -9f {} \;

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


# --- OWNERSHIP, RIGHTS ---

chmod -R o-w $PKG


# --- PACKAGE DESCRIPTION ---

mkdir -p $PKG/install
cat $SRCDIR/slack-desc > $PKG/install/slack-desc
if [ -f $SRCDIR/doinst.sh ]; then
  cat $SRCDIR/doinst.sh >> $PKG/install/doinst.sh
fi


# --- BUILDING ---

# Build the package:
cd $PKG
makepkg --linkadd y --chown n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD.tgz 2>&1 | tee $OUTPUT/makepkg-${PRGNAM}.log
cd $OUTPUT
md5sum $PRGNAM-$VERSION-$ARCH-$BUILD.tgz > $PRGNAM-$VERSION-$ARCH-$BUILD.tgz.md5
cd -
cat $PKG/install/slack-desc | grep "^${PRGNAM}" > $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD.txt


# --- CLEANUP ---

# Clean up the extra stuff:
if [ "$P1" = "--cleanup" ]; then
  rm -rf $TMP/tmp-$PRGNAM
  rm -rf $PKG
fi