#!/bin/bash
#  Copyright (C) 2010  Thomas Bourdon, <tb@halpanet.org>
#  Copyright (C) 2011-2012  Matias A. Fonzo, <selk@dragora.org>
#
#  This program is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 3 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program.  If not, see <http://www.gnu.org/licenses/>.

set -e

P=nfs-utils

# Get the latest version of the tarball:
if [[ -z $V ]]; then
  printf -v V "%s" ""*.tar.lz""
  V=${V##*-}
  V=${V%.tar.*}
fi

B=${B:-1}

CWD=$(pwd)
TMP=${TMP:-/tmp/sources}
OUT=${OUT:-/tmp/packages}

# The architecture (ARCH) can be exported:
ARCH=${ARCH:-i486}

# Flags for the compiler (according to the ARCH):
case "$ARCH" in
  i486)
    DCFLAGS="-O2 -march=i486 -mtune=i686";
    ;;
  x86_64)
    DCFLAGS="-O2 -mtune=generic"
    libSuffix=64
    ;;
  *)
    DCFLAGS="$DCFLAGS"
    libSuffix="$libSuffix"
    ;;
esac

# Parallel jobs for the compiler:
JOBS=${JOBS:=-j3}

PKG=${TMP}/package-${P}

rm -rf $PKG
mkdir -p $PKG $OUT

echo "Uncompressing the tarball..."
rm -rf ${TMP}/${P}-${V}
tar -xvf ${CWD}/${P}-${V}.tar.lz -C "$TMP"

cd ${TMP}/${P}-${V}

# Set sane ownerships and permissions:
chown -R 0:0 .
find . \
  \( -perm 2777 -o -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \
  \) -exec chmod 755 {} + \
  -o \
  \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \
  \) -exec chmod 644 {} + 

# Apply this patch to compile nfs-utils-1.2.4:
if [[ $V = 1.2.5 ]]; then
  zcat ${CWD}/03-handle-mtab-symlink.patch.gz | patch -p1 --verbose
  zcat ${CWD}/18-dont-use-PAGE_SIZE.patch.gz | patch -p1 --verbose
fi

# Note:
#
# The NFSv4 support require additional libraries.
#
CFLAGS="$DCFLAGS" \
./configure \
 --prefix=/usr \
 --sbindir=/sbin \
 --libdir=/usr/lib${libSuffix} \
 --mandir=/usr/man \
 --with-statedir=/var/lib/nfs \
 --enable-mountconfig \
 --disable-nfsv4 \
 --disable-nfsv41 \
 --disable-gss \
 --disable-tirpc \
 --disable-ipv6 \
 --program-prefix= \
 --program-suffix= \
 --build=${ARCH}-dragora-linux-gnu

make $JOBS || make;
make install DESTDIR=$PKG

# Include configuration file from nfs-utils:
if [[ -f utils/mount/nfsmount.conf ]]; then
  mkdir -p ${PKG}/etc
  sed -e "s%# Defaultvers=4%Defaultvers=3%g" \
   utils/mount/nfsmount.conf > ${PKG}/etc/nfsmount.conf.new
fi

# Set permissions:
find ${PKG}/sbin -type f | xargs chmod -v 0750

# Strip binaries, libraries and archives:
find $PKG -type f | xargs file | awk '/ELF/ && /executable/ || /shared object/' | \
 cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || :

find $PKG -type f | xargs file | grep "current ar archive" | \
 cut -f 1 -d : | xargs strip --strip-debug 2> /dev/null || :

# These might be in use:
( cd ${PKG}/var/lib/nfs
  for config_file in etab rmtab state xtab ; do
    mv $config_file ${config_file}.new
  done
)

# No NFSv4 yet.
rm -f ${PKG}/sbin/*nfs4

# Add configuration:
install -m 0644 ${CWD}/exports -D ${PKG}/etc/exports.new

# Add init script:
install -m 0755 ${CWD}/runit/run -D ${PKG}/etc/sv/knfsd/run.new
install -m 0755 ${CWD}/runit/finish -D ${PKG}/etc/sv/knfsd/finish.new
install -d ${PKG}/etc/runit/runsvdir/default
( cd ${PKG}/etc/runit/runsvdir/default
  ln -sf /etc/sv/knfsd .
)

# Compress and link manpages:
( cd ${PKG}/usr/man
  find . -type f -name "*.?" -exec gzip -9N {} \;
  for manpage in $(find . -type l); do
    ln -s $(readlink $manpage).gz ${manpage}.gz
    rm -f $manpage
  done
)
 
# Add documentation:
mkdir -p ${PKG}/usr/doc/${P}-${V}/statd
install -m 0644 \
  COPYING INSTALL NEWS README \
  ${PKG}/usr/doc/${P}-${V}
install -m 0644 \
  utils/statd/COPYING utils/statd/TODO \
  ${PKG}/usr/doc/${P}-${V}/statd

# Add the post-install script:
mkdir -p ${PKG}/install
zcat ${CWD}/post-install.gz > ${PKG}/install/post-install

# Copy the description files:
mkdir -p ${PKG}/description
cp ${CWD}/description/* ${PKG}/description

cd $PKG
makepkg -l ${OUT}/${P}-${V}-${ARCH}-${B}.tlz