#!/bin/bash

# Copyright 2005-2018  Patrick J. Volkerding, Sebeka, Minnesota, 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=procps-ng
VERSION=${VERSION:-3.3.15}
PSMISCVER=${PSMISCVER:-23.1}
PROCINFONGVER=${PROCINFONGVER:-2.0.304}
PROCINFOVER=${PROCINFOVER:-18}
BUILD=${BUILD:-2}

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:-" -j7 "}

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

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

# TODO(muslack): procinfo should be built statically

rm -rf $PKG
mkdir -p $TMP $PKG
cd $TMP
rm -rf $PKGNAM-$VERSION
tar xvf $CWD/$PKGNAM-$VERSION.tar.xz --no-same-owner || exit 1
cd $PKGNAM-$VERSION || exit 1
tar xvf $CWD/psmisc-$PSMISCVER.tar.xz --no-same-owner || exit 1
tar xvf $CWD/procinfo-ng-$PROCINFONGVER.tar.xz --no-same-owner || exit 1
tar xvf $CWD/procinfo-$PROCINFOVER.tar.xz --no-same-owner || 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 {} \;

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/ \
  --bindir=/bin \
  --sbindir=/sbin \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --includedir=/usr/include \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --mandir=/usr/man \
  --datarootdir=/usr/share \
  --docdir=/usr/doc/$PKGNAM-$VERSION \
  --disable-shared \
  --enable-static \
  --disable-silent-rules \
  --disable-rpath \
  --enable-watch8bit \
  --enable-skill \
  --enable-sigwinch \
  --enable-w-from \
  --disable-kill \
  --without-systemd \
  --disable-modern-top \
  --build=$ARCH-slackware-linux || exit 1

make $NUMJOBS || exit 1
make install DESTDIR=$PKG || exit 1

# Move the shared library to $PKG/lib${LIBDIRSUFFIX}:
mkdir -p $PKG/lib${LIBDIRSUFFIX}
( cd $PKG/usr/lib${LIBDIRSUFFIX}
  for file in lib*.so.?.* ; do
    mv $file ../../lib${LIBDIRSUFFIX}
    ln -sf ../../lib${LIBDIRSUFFIX}/$file .
  done
  cp -a lib*.so.? ../../lib${LIBDIRSUFFIX}
)

# Remove .la file(s):
rm -f $PKG/usr/lib${LIBDIRSUFFIX}/*.la

# It seems that upstream has shuffled the location of many tools with the
# 3.3.11 release.  To me, this just doesn't make sense to break any existing
# scripts that might be using an absolute path, or to move tools that might
# be needed before /usr is mounted into /usr.  So, we will make sure that
# everything is moved back to where the Slackware locations have always been.
# These tools belong in /bin:
mkdir -p $PKG/bin
for file in free killall ps ; do
  find $PKG -name $file -exec mv "{}" $PKG/bin \;
done
# These tools belong in /sbin:
mkdir -p $PKG/sbin
for file in pidof sysctl ; do
  find $PKG -name $file -exec mv "{}" $PKG/sbin \;
done
mkdir -p $PKG/usr/bin
# These tools belong in /usr/bin:
for file in fuser lsdev peekfd pgrep pkill pmap procinfo prtstat pstree pwdx skill slabtop snice socklist tload top uptime vmstat w watch ; do
  find $PKG -name $file -exec mv "{}" $PKG/usr/bin \;
done
# These symlinks belong in /bin:
rm -f $PKG/bin/pidof
ln -sf /sbin/pidof $PKG/bin/pidof
# These symlinks belong in /usr/bin:
rm -f $PKG/usr/bin/free $PKG/usr/bin/pidof $PKG/usr/bin/ps
ln -sf /bin/free $PKG/usr/bin/free
ln -sf /sbin/pidof $PKG/usr/bin/pidof
ln -sf /bin/ps $PKG/usr/bin/ps

# Create /etc/sysctl.d:
mkdir -p $PKG/etc/sysctl.d

cd psmisc-$PSMISCVER || exit 1

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --mandir=/usr/man \
  --docdir=/usr/doc/psmisc-$PSMISCVER \
  --disable-silent-rules \
  --disable-rpath \
  --build=$ARCH-slackware-linux || exit 1

make $NUMJOBS || exit 1
make install DESTDIR=$PKG || exit 1

# Move "killall" to the traditional location:
mv $PKG/usr/bin/killall $PKG/bin
ln -s /bin/killall $PKG/usr/bin/killall

mkdir -p $PKG/usr/doc/psmisc-$PSMISCVER
cp -a ChangeLog COPYING* NEWS README* $PKG/usr/doc/psmisc-$PSMISCVER

# 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=$PKG/usr/doc/psmisc-$PSMISCVER
  cat ChangeLog | head -n 1000 > $DOCSDIR/ChangeLog
  touch -r ChangeLog $DOCSDIR/ChangeLog
fi

cd ../procinfo-ng-$PROCINFONGVER || exit 1
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --mandir=/usr/man \
  --docdir=/usr/doc/procinfo-ng-$PROCINFONGVER \
  --enable-maintainer-mode \
  --build=$ARCH-slackware-linux || exit 1

make $NUMJOBS || exit 1
make install DESTDIR=$PKG || exit 1

mkdir -p $PKG/usr/doc/procinfo-ng-$PROCINFONGVER
cp -a GPL-2.txt LGPL-2.1.txt LICENSE.txt COPYING* README* $PKG/usr/doc/procinfo-ng-$PROCINFONGVER

# Now install a couple of scripts from the original procinfo package.
cd ../procinfo-$PROCINFOVER || exit 1
install -m 0755 lsdev.pl $PKG/usr/bin/lsdev
install -m 0755 socklist.pl $PKG/usr/bin/socklist
install -m 0644 lsdev.8 socklist.8 $PKG/usr/man/man8

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

# 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

# Back to the procps-ng main source directory...
cd ..

mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION
cp -a \
  AUTHORS ChangeLog COPYING* NEWS README* \
  $PKG/usr/doc/$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=$PKG/usr/doc/$PKGNAM-$VERSION
  cat ChangeLog | head -n 1000 > $DOCSDIR/ChangeLog
  touch -r ChangeLog $DOCSDIR/ChangeLog
fi

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

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