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#!/bin/bash

# Slackware build script for ossec-agent

# Copyright 2016, 2020  Mario Preksavec, Zagreb, Croatia
# 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.

# Special thanks to Jason Graham for patches and testing

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

PRGNAM=ossec-agent
VERSION=${VERSION:-3.6.0}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

SRCNAM=ossec-hids

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    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}

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

USERID=${USERID:-333}
USERID_MAIL=${USERID_MAIL:-334}
USERID_REMOTE=${USERID_REMOTE:-335}
GROUPID=${GROUPID:-333}

if [ "$GEOIP" != "yes" ]; then
    GEOIP=no
fi

if [ "$INOTIFY" != "yes" ]; then
    INOTIFY=no
fi

if ! grep ^ossec: /etc/group 2>&1 > /dev/null \
     || ! grep -E '^(ossec|ossecm|ossecr):' /etc/passwd 2>&1 > /dev/null; then
  echo -e "\n  You must have ossec users and a group to run this script\n"
fi

if ! grep ^ossec: /etc/group 2>&1 > /dev/null; then
  echo "  # groupadd -g $GROUPID ossec"
fi

if ! grep ^ossec: /etc/passwd 2>&1 > /dev/null; then
  echo "  # useradd -u $USERID -d /var/ossec -s /bin/false -g ossec ossec"
  echo "  # passwd -l ossec"
fi

if ! grep ^ossecm: /etc/passwd 2>&1 > /dev/null; then
  echo "  # useradd -u $USERID_MAIL -d /var/ossec -s /bin/false -g ossec ossecm"
  echo "  # passwd -l ossecm"
fi

if ! grep ^ossecr: /etc/passwd 2>&1 > /dev/null; then
  echo "  # useradd -u $USERID_REMOTE -d /var/ossec -s /bin/false -g ossec ossecr"
  echo "  # passwd -l ossecr"
fi

if ! grep ^ossec: /etc/group 2>&1 > /dev/null \
     || ! grep -E '^(ossec|ossecm|ossecr):' /etc/passwd 2>&1 > /dev/null; then
  echo
  exit 1
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $SRCNAM-$VERSION
tar xvf $CWD/$SRCNAM-$VERSION.tar.gz
cd $SRCNAM-$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 {} \;

patch -p1 < $CWD/gcc-fno-common-3.6.0.patch

# Makefile fixes
sed -e 's|\(./init/adduser.sh.*\)|#\1|' \
    -e 's|\(DEFINES+=-DDEFAULTDIR=\).*|\1\\"/var/ossec\\"|' \
    -i src/Makefile

# There is no configure script and install.sh is a bit limited
( cd src
  make USE_GEOIP=$GEOIP USE_INOTIFY=$INOTIFY \
       PREFIX=$PKG/var/ossec TARGET=agent build
  make USE_GEOIP=$GEOIP USE_INOTIFY=$INOTIFY \
       PREFIX=$PKG/var/ossec TARGET=agent install
)

# Prepare system /etc
mkdir -p $PKG/etc/{logrotate.d,rc.d}
cat << EOF > $PKG/etc/ossec-init.conf.new
DIRECTORY="/var/ossec"
VERSION="$(cat src/VERSION)"
DATE="$(date)"
TYPE="agent"
EOF
chmod 600 $PKG/etc/ossec-init.conf.new
cat src/init/ossec-hids.init > $PKG/etc/rc.d/rc.ossec.new
cat $CWD/ossec.logrotate > $PKG/etc/logrotate.d/ossec.new

# Stock ossec.conf is just an example - we prefer our own
mv $PKG/var/ossec/etc/ossec.conf $PKG/var/ossec/etc/ossec.conf.example
cat $CWD/ossec-agent.conf > $PKG/var/ossec/etc/ossec.conf.new
touch $PKG/var/ossec/etc/shared/agent.conf.new
chmod 640 $PKG/var/ossec/etc/{ossec,shared/agent}.conf.new
chown root:ossec $PKG/var/ossec/etc/{ossec,shared/agent}.conf.new
for i in $PKG/var/ossec/etc/*.{conf,keys} ; do mv $i $i.new ; done

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

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a BUGS CHANGELOG.md CONFIG CONTRIBUTORS INSTALL LICENSE README.md SUPPORT.md \
  doc/{*.txt,README.*} \
  $CWD/README.SLACKWARE $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

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