#!/bin/bash

# Copyright 2006, 2010  Alan Hicks, Lizella, GA
# Copyright 2013, 2014, 2015, 2016, 2017  Mario Preksavec, Zagreb, Croatia
# Copyright 2017, 2018, 2019, 2020  Patrick J. Volkerding, Sebeka, MN, USA
# 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.

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

PKGNAM=dovecot
VERSION=${VERSION:-$(echo $PKGNAM-*.tar.?z | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
BUILD=${BUILD:-3}

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 "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PKGNAM-$VERSION-$ARCH-$BUILD.txz"
  exit 0
fi

NUMJOBS=${NUMJOBS:-" -j$(expr $(nproc) + 1) "}

TMP=${TMP:-/tmp}
PKG=$TMP/package-$PKGNAM

if [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=pentium4 -mtune=generic"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -march=x86-64 -mtune=generic -fPIC"
  LIBDIRSUFFIX="64"
elif [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
else
  SLKCFLAGS=${SLKCFLAGS:-"-O2"}
  LIBDIRSUFFIX=${LIBDIRSUFFIX:-""}
fi

if [ "$(grep "^dovecot:x:94:94" /etc/passwd)" = "" -o \
     "$(grep "^dovecot:x:94:" /etc/group)" = "" -o \
     "$(grep "^dovenull:x:95:95" /etc/passwd)" = "" -o \
     "$(grep "^dovenull:x:95:" /etc/group)" = "" ]; then
cat << EOF
The dovecot and dovenull user/group do not exist on this system.
Before running this script, please add them with the following commands:

groupadd -g 94 dovecot
useradd -d /dev/null -s /bin/false -u 94 -g 94 dovecot
groupadd -g 95 dovenull
useradd -d /dev/null -s /bin/false -u 95 -g 95 dovenull

EOF
exit 1
fi

rm -rf $PKG
mkdir -p $TMP $PKG
cd $TMP
rm -rf $PKGNAM-ce-$VERSION
tar xvf $CWD/$PKGNAM-$VERSION.tar.?z || exit 1
cd $PKGNAM-$VERSION || exit 1

if [ ! -L /lib${LIBDIRSUFFIX}/libpam.so.? ]; then # no PAM
  # Ship config set up for authentication from /etc/passwd and /etc/shadow.
  zcat $CWD/dovecot.default.shadow.auth.diff.gz | patch -p1 --verbose || exit 1
  PAM_OPTIONS="--without-pam"
else # Yes, we have PAM:
  mkdir -p $PKG/etc/pam.d
  cp -a $CWD/dovecot.pam $PKG/etc/pam.d/dovecot.new
  chown root:root $PKG/etc/pam.d/dovecot.new
  chmod 644 $PKG/etc/pam.d/dovecot.new
  PAM_OPTIONS="--with-pam"
fi

# Since this package installs working config files in /etc/dovecot, there isn't
# any need to send people to /usr/doc. Also, make sure that TLS is recommended.
zcat $CWD/dovecot.config.README.diff.gz | patch -p1 --verbose || exit 1

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 {} \+

# Add -ldl to LDFLAGS for sqlite

# Add AArch64 architecture (and new architectures):
\cp /usr/share/libtool/build-aux/config.* .

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
LDFLAGS="-Wl,--copy-dt-needed-entries -ldl" \
./configure \
  --prefix=/usr \
  --sysconfdir=/etc \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --localstatedir=/var \
  --docdir=/usr/doc/$PKGNAM-$VERSION \
  --mandir=/usr/man \
  --with-notify=inotify \
  $PAM_OPTIONS \
  --with-ldap=plugin \
  --with-lua \
  --with-lucene \
  --with-mysql \
  --with-sqlite \
  --with-libcap \
  --disable-static \
  --build=$ARCH-slackware-linux || exit 1

make $NUMJOBS || make -j1 || exit 1
make install-strip DESTDIR=$PKG || exit 1

# Install sample configuration files:
mkdir -p $PKG/etc/dovecot
cp -a $PKG/usr/doc/$PKGNAM-$VERSION/example-config/* $PKG/etc/dovecot
( cd $PKG/etc/dovecot
  for file in *.conf *.ext conf.d/*.conf conf.d/*.ext ; do
    mv $file ${file}.new
  done
)

mkdir -p $PKG/etc/rc.d
cat $CWD/rc.dovecot > $PKG/etc/rc.d/rc.dovecot.new
chmod 0644 $PKG/etc/rc.d/rc.dovecot.new

# Compress and link manpages, if any:
if [ -d $PKG/usr/man ]; then
  ( cd $PKG/usr/man
    for manpagedir in $(find . -type d -name "man*") ; do
      ( cd $manpagedir
        for eachpage in $( find . -type l -maxdepth 1 | grep -v '\.gz$') ; do
          ln -s $( readlink $eachpage ).gz $eachpage.gz
          rm $eachpage
        done
        gzip -9 *.?
      )
    done
  )
fi

cp -a \
  AUTHORS COPYING* ChangeLog NEWS README TODO \
  $PKG/usr/doc/$PKGNAM-$VERSION/

# If there's a ChangeLog, installing at least part of the recent history
# is useful, but don't let it get totally out of control:
if [ -r ChangeLog ]; then
  DOCSDIR=$(echo $PKG/usr/doc/${PKGNAM}-$VERSION)
  cat ChangeLog | head -n 1000 > $DOCSDIR/ChangeLog
  touch -r ChangeLog $DOCSDIR/ChangeLog
fi

# If there's a NEWS file, installing at least part of the recent history
# is useful, but don't let it get totally out of control:
if [ -r NEWS ]; then
  DOCSDIR=$(echo $PKG/usr/doc/${PKGNAM}-$VERSION)
  cat NEWS | head -n 1000 > $DOCSDIR/NEWS
  touch -r NEWS $DOCSDIR/NEWS
fi

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
zcat $CWD/doinst.sh.gz > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $TMP/$PKGNAM-$VERSION-$ARCH-$BUILD.txz