#!/bin/sh

# Slackware build script for broadcom-sta

# Copyright 2015-2019 Andreas Voegele <andreas@andreasvoegele.com>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

PRGNAM=broadcom-sta
VERSION=${VERSION:-6.30.223.271}
BUILD=${BUILD:-3}
TAG=${TAG:-_SBo}

KERNEL=${KERNEL:-$( uname -r )}
IFNAME=${IFNAME:-eth}

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

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

case "$ARCH" in
  i?86)
    SRCNAM=hybrid-v35-nodebug-pcoem
    ;;
  x86_64)
    SRCNAM=hybrid-v35_64-nodebug-pcoem
    ;;
  *)
    echo "$ARCH is not supported..."
    exit 1
    ;;
esac

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
mkdir $PRGNAM-$VERSION
cd $PRGNAM-$VERSION
tar xvf $CWD/$SRCNAM-$( echo $VERSION | tr . _ ).tar.gz
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 {} \;

if [ "$IFNAME" != "eth" ]; then
  sed -i "/BRCM_WLAN_IFNAME/s/eth/$IFNAME/" src/wl/sys/wl_linux.c
fi

patch -p2 < $CWD/patches/04-user_ioctl.patch
patch -p2 < $CWD/patches/05-remove-time-and-date-macros.patch
patch -p2 < $CWD/patches/13-broadcom-sta-6.30.223.248-linux-3.18-null-pointer-crash.patch
patch -p2 < $CWD/patches/14-rdtscl.patch
#patch -p2 < $CWD/patches/15-linux47.patch
if [ -n "${KERNEL##[23].*}" -a -n "${KERNEL##4.[0-6].*}" ]; then
  sed -i.orig 's/IEEE80211_BAND_\([25]\)GHZ/NL80211_BAND_\1GHZ/g' \
    src/wl/sys/wl_cfg80211_hybrid.c
fi
patch -p2 < $CWD/patches/16-linux48.patch
patch -p2 < $CWD/patches/17-fix-kernel-warnings.patch
patch -p2 < $CWD/patches/18-linux411.patch
patch -p2 < $CWD/patches/19-linux412.patch
patch -p2 < $CWD/patches/20-linux414.patch
patch -p2 < $CWD/patches/21-linux415.patch
patch -p2 < $CWD/patches/22-linux56.patch
patch -p1 < $CWD/patches/009-fix_mac_profile_discrepancy.patch

# See https://lkml.org/lkml/2019/3/1/643
sed -i 's/get_ds()/KERNEL_DS/g' src/wl/sys/wl_iw.c
sed -i 's/get_ds()/KERNEL_DS/g' src/wl/sys/wl_cfg80211_hybrid.c

env -u ARCH make -C /lib/modules/$KERNEL/build M=$(pwd) clean
env -u ARCH make -C /lib/modules/$KERNEL/build M=$(pwd)

mkdir -p $PKG/lib/modules/$KERNEL/kernel/extra
cp wl.ko $PKG/lib/modules/$KERNEL/kernel/extra

mkdir -p $PKG/etc/modprobe.d
cat $CWD/b43_blacklist.conf.new > $PKG/etc/modprobe.d/b43_blacklist.conf.new

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a lib/LICENSE.txt $CWD/README_$VERSION.txt $PKG/usr/doc/$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 << EOF > $PKG/install/doinst.sh
config() {
  NEW="\$1"
  OLD="\$(dirname \$NEW)/\$(basename \$NEW .new)"
  # If there's no config file by that name, mv it over:
  if [ ! -r \$OLD ]; then
    mv \$NEW \$OLD
  elif [ "\$(cat \$OLD | md5sum)" = "\$(cat \$NEW | md5sum)" ]; then
    # toss the redundant copy
    rm \$NEW
  fi
  # Otherwise, we leave the .new copy for the admin to consider...
}

config etc/modprobe.d/b43_blacklist.conf.new

# A good idea whenever kernel modules are added or changed:
if [ -x sbin/depmod ]; then
  chroot . /sbin/depmod -a $KERNEL 1> /dev/null 2> /dev/null
fi
EOF

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-${VERSION}_$( echo $KERNEL | tr - _ )-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}