#!/bin/bash

# Copyright (c) 2006,2007 Eric Hameleers <alien@slackware.com>
# Copyright (c) 2011-2022 Matteo Bernardini <ponce@slackbuilds.org>
# 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.
# -----------------------------------------------------------------------------

# Modified to SBo format with the help of Yalla-One
# Version bump and various other changes by Robby Workman
# New version bump and various other changes by Matteo Bernardini
# No additional license terms added
# Code to deal with multiple copies of the source by B. Watson

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=clamav
VERSION=${VERSION:-1.0.1}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i686 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/tmp/SBo}
PKG="$TMP/package-$PRGNAM"
OUTPUT=${OUTPUT:-/tmp}

# Two letter country code
# See http://www.iana.org/cctld/cctld-whois.htm for options
COUNTRY=${COUNTRY:-us}

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

bailout() {
  printf "\n  You must have a \"clamav\" user and group in order to run this script.
  Add them with something like this:
     groupadd -g 210 clamav
     useradd -u 210 -d /dev/null -s /bin/false -g clamav clamav\n"
  exit 1
}

# Check for ClamAV user and group availability
if ! getent group clamav 2>&1 > /dev/null; then
  bailout ;
elif ! getent passwd clamav 2>&1 > /dev/null; then
  bailout ;
fi

set -e

# 20220209 bkw: the download filename ends up with a bunch of
# gibberish (CGI params) if you use wget... I ended up with 2 copies
# of the tarball with different gibberish in the names, and the "tar
# xvf $CWD/$PRGNAM-$VERSION.tar.?z*" meant that both were passed as
# args to tar (making it fail). So be a little more paranoid about
# the filename.
TARBALL=$CWD/$PRGNAM-$VERSION.tar.gz
if [ ! -e "$TARBALL" ]; then
  T="$( /bin/ls $CWD/$PRGNAM-$VERSION.tar.gz\?* 2>/dev/null | head -1 )"
  [ -n "$T" ] && TARBALL="$T"
fi

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $TARBALL
cd $PRGNAM-$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 {} \;

export PATH="/opt/rust16/bin:$PATH"
if [ -z "$LD_LIBRARY_PATH" ]; then
  export LD_LIBRARY_PATH="/opt/rust16/lib$LIBDIRSUFFIX"
else
  export LD_LIBRARY_PATH="/opt/rust16/lib$LIBDIRSUFFIX:$LD_LIBRARY_PATH"
fi

# Specify the desired mirror in the update config file
# http://www.iana.org/cctld/cctld-whois.htm
sed -i "s/^\#DatabaseMirror.*/DatabaseMirror db.${COUNTRY}.clamav.net/" \
  etc/freshclam.conf.sample || exit 1

sed \
  -e "s/^Example/#Example/" \
  -e "s/^\#LogSyslog/LogSyslog/" \
  -e "s/^\#LogFacility/LogFacility/" \
  -e "s/^\#PidFile.*/PidFile \/var\/run\/clamav\/freshclam.pid/" \
  -e "s/^\#UpdateLogFile.*/UpdateLogFile \/var\/log\/clamav\/freshclam.log/" \
  -e "s/^\#AllowSupplementaryGroups.*/AllowSupplementaryGroups yes/" \
  -e "s/^\#DatabaseOwner.*/DatabaseOwner clamav/" \
  -e "s/^\#NotifyClamd.*/NotifyClamd \/etc\/clamd.conf/" \
  -i etc/freshclam.conf.sample || exit 1
sed \
  -e "s/^Example/#Example/" \
  -e "s/^\#LogSyslog/LogSyslog/" \
  -e "s/^\#LogFacility/LogFacility/" \
  -e "s/^\#LogFile\ .*/LogFile \/var\/log\/clamav\/clamd.log/" \
  -e "s/^\#PidFile.*/PidFile \/var\/run\/clamav\/clamd.pid/" \
  -e "s/^\#LocalSocket\ .*/LocalSocket \/var\/run\/clamav\/clamd.socket/" \
  -e "s/^\#LocalSocketGroup.*/LocalSocketGroup clamav/" \
  -e "s/^\#LocalSocketMode/LocalSocketMode/" \
  -e "s/^\#FixStaleSocket/FixStaleSocket/" \
  -e "s/^\#User.*/User clamav/" \
  -e "s/^\#AllowSupplementaryGroups.*/AllowSupplementaryGroups yes/" \
  -e "s/^\#ExitOnOOM/ExitOnOOM/" \
  -i etc/clamd.conf.sample || exit 1

mkdir -p build
cd build
  cmake \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DCMAKE_INSTALL_FULL_LIBDIR=/usr/lib$LIBDIRSUFFIX \
    -DAPP_CONFIG_DIRECTORY=/etc \
    -DENABLE_MILTER=ON \
    -DENABLE_SYSTEMD=OFF \
    -DENABLE_TESTS=OFF \
    -DCMAKE_BUILD_TYPE=Release ..
  make
  make install DESTDIR=$PKG
cd ..

mv $PKG/usr/share/man $PKG/usr/man
rm -fR $PKG/usr/share

# Prepare the config files:
for cf in clamd freshclam clamav-milter; do
  mv $PKG/etc/$cf.conf.sample $PKG/etc/$cf.conf.new
done

# Our rc script and logrotate entry:
install -D -m 0755 $CWD/rc.clamav $PKG/etc/rc.d/rc.clamav.new
install -D -m 0644 $CWD/logrotate.clamav $PKG/etc/logrotate.d/clamav.new

# Create pid, socket, db, and log directories
# init script must still ensure that /var/run/clamav exists
# and has proper ownership and permissions though
mkdir -p $PKG/var/lib/clamav $PKG/var/log/clamav $PKG/var/run/clamav
chmod 0771 $PKG/var/log/clamav $PKG/var/run/clamav
chmod 0775 $PKG/var/lib/clamav

# Fixup some ownership and permissions issues
chown -R root:root $PKG
chmod -R o-w $PKG
chown clamav $PKG/usr/sbin/clamav-milter
chmod 4700 $PKG/usr/sbin/clamav-milter
touch $PKG/var/lib/clamav/main.cvd $PKG/var/lib/clamav/daily.cvd
chmod 0660 $PKG/var/lib/clamav/*

# Create log files in such a way that they won't clobber existing ones
touch $PKG/var/log/clamav/clamd.log.new \
  $PKG/var/log/clamav/freshclam.log.new
chmod 0660 $PKG/var/log/clamav/clamd.log.new \
  $PKG/var/log/clamav/freshclam.log.new

chown -R clamav:clamav $PKG/var/lib/clamav $PKG/var/log/clamav \
  $PKG/var/run/clamav

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

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

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  COPYING* docs/html examples \
  $PKG/usr/doc/$PRGNAM-$VERSION
chmod -R 0644 $PKG/usr/doc/$PRGNAM-$VERSION
find $PKG/usr/doc/$PRGNAM-$VERSION -type d -exec chmod 0755 {} \;
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
cat $CWD/README.SLACKWARE > $PKG/usr/doc/$PRGNAM-$VERSION/README.SLACKWARE

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