#!/bin/bash

# dhcpcd.SlackBuild
# Heavily based on the original Slackware build scripts,
# Modified by Stuart Winter for ARMedslack.
#
# Copyright 2008,2009  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.

# Record toolchain & other info for the build log:
slackbuildinfo

# Paths to skeleton port's source & real Slackware source tree:
export CWD=$SLACKSOURCE/$PKGSERIES/$PKGNAM
export PORTCWD=$PWD

# Temporary build locations:
export TMPBUILD=$TMP/build-$PKGNAM
export PKG=$TMP/package-$PKGNAM
mkpkgdirs # Delete & re-create temporary directories then cd into $TMPBUILD

# Determine the CFLAGS for the known architectures:
case $ARCH in
   arm)     export SLKCFLAGS="-O2 -march=armv4 -mtune=xscale" ;;
   armel)   export SLKCFLAGS="-O2 -march=armv4t" ;;
   powerpc) export SLKCFLAGS="-O2" ;;
   sparc)   export SLKCFLAGS="-O2" ;;
   hppa)    export SLKCFLAGS="-O2" ;;
   *)       export SLKCFLAGS="-O2" ;;
esac

# Extract source:
tar xvvf $CWD/$PKGNAM-$VERSION.tar.bz2
cd $PKGNAM-$VERSION
slackhousekeeping

# This changes the default locations where *.pid and other files are
# written - instead of various locations, use /etc/dhcpc
# The latter directory was long traditional, and (more importantly)
# you can't be sure that /var is mounted yet when dhcpcd is invoked.
zcat $CWD/patches/config.h.diff.gz | patch -p1 || exit 1

# Fixup the sample dhcpcd.sh script to reflect our changes
zcat $CWD/patches/dhcpcd.sh.diff.gz | patch -p1 || exit 1

# Fix a typo in the manpage
zcat $CWD/patches/dhcpcd.8.in.diff.gz | patch -p1 || exit 1

# Disable zeroconf support
# I'm not sure if this is necessary, to be honest.  If we do this though,
# I think we'll want to edit the man page to remove references to it.
#sed -i 's%#define ENABLE_IPV4LL%#undef ENABLE_IPV4LL%' config.h

# Configure:
CFLAGS="$SLKCFLAGS" \
  make \
  INFODIR=/etc/dhcpc \
  || failmake

# We'll install this manually, as the only thing "make install" actually
# installs is the executable and the man page, and the man page goes to
# the wrong place :-)
mkdir -p $PKG/sbin
install -vpm755 dhcpcd $PKG/sbin/
mkdir -p $PKG/usr/man/man8
install -vpm644 dhcpcd.8 $PKG/usr/man/man8

# This script (or its equivalent) has been installed non-executable for
# several dhcpcd releases leading me to believe this is intentional on the
# part of the developers.  Indeed, the script is called a "sample" in the
# included comments, and there's been at least one security issue related
# to its use in the past, so it's probably a safer bet to not install it so
# that it works "out of the box".  However, making it non-executable is not
# the best solution for this as it leads to error messages in the system
# logs which I hear about from time to time.  Instead, we'll make it
# executable, but will give it a suffix of -sample so that dhcpcd won't
# attempt to run it unless the admin specifically configure it to do so.
# As far as I can tell it does nothing more than add some extra verbosity
# to the logs anyway, and rc.inet1 already does that.  There's really no
# need that I can see to enable the script.
mkdir -p $PKG/etc/dhcpc
install -vpm755 dhcpcd.sh $PKG/etc/dhcpc/dhcpcd.sh-sample

# Copy docs:
mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION
cp -a README $PKG/usr/doc/$PKGNAM-$VERSION
zcat $CWD/COPYRIGHT.gz > $PKG/usr/doc/$PKGNAM-$VERSION/COPYRIGHT

# If necessary, start the fakeroot server so we can set file/dir ownerships:
start_fakeroot

# Apply generic Slackware packaging policies:
cd $PKG
slackstripall   # strip all .a archives and all ELFs
slackgzpages -i # compress man & info pages and delete usr/info/dir
slackslack      # chown -R root:root, chmod -R og-w, slackchown, slack644docs
slackdesc       # install slack-desc and doinst.sh
slackmp         # run makepkg -l y -c n

# Perform any final checks on the package:
cd $PKG
slackhlinks     # search for any hard links