#!/bin/bash

# Copyright 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2020, 2021, 2022, 2023, 2024  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=seamonkey
TARBALLVER=${VERSION:-$(basename $(ls seamonkey-*.tar.* | cut -d - -f 2 | rev | cut -f 3- -d . | rev) .source)}
# Strip the end from beta versions:
VERSION=$(echo $TARBALLVER | cut -f 1 -d b)
BUILD=${BUILD:-1}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i686 ;;
    arm*) export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) export ARCH=$( 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-$TARBALLVER-$ARCH-$BUILD.txz"
  exit 0
fi

# Seamonkey has been requiring more and more memory, especially while linking
# libxul. If it fails to build natively on x86 32-bit, it can be useful to
# attempt the build using an x86_64 kernel and a 32-bit userspace. Detect this
# situation and set the ARCH to i686. Later in the script we'll add some
# options to the .mozconfig so that the compile will do the right thing.
if [ "$(uname -m)" = "x86_64" -a "$(file -L /usr/bin/gcc | grep 386 | grep 32-bit)" != "" ]; then
  COMPILE_X86_UNDER_X86_64=true
  ARCH=i686
fi

if [ "$ARCH" = "i686" ]; then
  LIBDIRSUFFIX=""
  OPTIMIZE_FLAG=${OPTIMIZE_FLAG:-"-O1 -g0"}
  # The elf hack has been causing failures on 32-bit x86:
  ELFHACK="--disable-elf-hack"
elif [ "$ARCH" = "x86_64" ]; then
  LIBDIRSUFFIX="64"
  OPTIMIZE_FLAG=${OPTIMIZE_FLAG:-"-O1 -g0"}
  ELFHACK="--enable-elf-hack"
elif [ "$ARCH" = "arm" ]; then
  LIBDIRSUFFIX=""
  OPTIMIZE_FLAG=${OPTIMIZE_FLAG:-"-Os"}
else
  LIBDIRSUFFIX=${LIBDIRSUFFIX:-""}
  OPTIMIZE_FLAG=${OPTIMIZE_FLAG:-"-O1"}
fi

case "$ARCH" in
    arm*) TARGET=$ARCH-slackware-linux-gnueabi ;;
    mips64el) TARGET=$ARCH-slackware-linux-gnuabi64 ;;
    *)    TARGET=$ARCH-slackware-linux ;;
esac

# Choose a compiler (gcc/g++ or clang/clang++):
export CC=${CC:-clang}
export CXX=${CXX:-clang++}

# -Wformat is needed for -Werror=format-security
# -fno-delete-null-pointer-checks disables gcc6 optimization that leads to instability
export CFLAGS="-Wformat -fno-delete-null-pointer-checks"
export CXXFLAGS="-Wformat -fno-delete-null-pointer-checks -fpermissive"

# Keep memory usage as low as possible when linking:
SLKLDFLAGS=" -Wl,--as-needed -Wl,--no-keep-memory -Wl,--stats -Wl,--reduce-memory-overheads"
export LDFLAGS="$SLKLDFLAGS"
export MOZ_LINK_FLAGS="$SLKLDFLAGS"

# Don't use icecream with clang:
if [ "$CC" = "clang" ]; then
  PATH=$(echo $PATH | sed "s|/usr/libexec/icecc/bin||g" | tr -s : | sed "s/^://g" | sed "s/:$//g")
fi

# Set linker to use:
LINKER=bfd

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

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

# If there is a private Google API key available at compile time, use
# it to enable support for Google Safe Browsing. For Slackware builds,
# we use a private key issued for the Slackware project. If you are
# rebuilding and need this support, or you are producing your own
# distribution, you may obtain your own Google API key at no charge by
# following these instructions:
# https://bugzilla.mozilla.org/show_bug.cgi?id=1377987#c0
if [ -r /root/google-api-key ]; then
  GOOGLE_API_KEY="--with-google-safebrowsing-api-keyfile=/root/google-api-key"
fi

rm -rf $PKG
mkdir -p $TMP $PKG/usr

# We need to use the incredibly ancient autoconf-2.13 for this  :/
( cd $CWD/autoconf ; ./autoconf.build )
PATH=$TMP/autoconf-tmp/usr/bin:$PATH

cd $TMP
rm -rf seamonkey-${TARBALLVER}
# Unpack this in a subdirectory to prevent changing permissions on /tmp:
rm -rf seamonkey-unpack
mkdir seamonkey-unpack
cd seamonkey-unpack
echo "Extracting $CWD/seamonkey-${TARBALLVER}.source.tar.?z..."
tar xf $CWD/seamonkey-${TARBALLVER}.source.tar.?z || exit 1
mv * ..
cd ..
rm -rf seamonkey-unpack
cd seamonkey-${TARBALLVER} || exit 1

# Retain GTK+ v2 scrolling behavior:
zcat $CWD/sm.ui.scrollToClick.diff.gz | patch -p2 --verbose || exit 1

# Fix incorrect wav signed-samples byte order swap on big-endian:
zcat $CWD/webrtc-wav_file-big_endian.diff.gz | patch -p1 --verbose || exit 1

# Make sure the perms/ownerships are sane:
chown -R root:root .
find . \
  \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
  -exec chmod 755 {} \+ -o \
  \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
  -exec chmod 644 {} \+

# Don't define a function that's included starting in glibc-2.36:
zcat $CWD/arc4random_buf.glibc-2.36.diff.gz | patch -p1 --verbose || exit 1

# Our building options, in a configure-like display ;)
OPTIONS="\
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --disable-crashreporter \
  --disable-debug \
  --disable-install-strip \
  --disable-necko-wifi \
  --disable-rust-simd \
  --disable-strip \
  --disable-updater \
  --enable-accessibility \
  --enable-alsa \
  --enable-application=comm/suite \
  --enable-calendar \
  --enable-default-toolkit=cairo-gtk3 \
  $ELFHACK \
  $GOOGLE_API_KEY \
  --enable-js-shell \
  --enable-linker=$LINKER \
  --enable-release \
  --enable-startup-notification \
  --with-system-nspr \
  --with-system-nss \
  --with-system-zlib \
  --with-unsigned-addon-scopes=app,system \
  --host=$TARGET \
  --target=$TARGET"

export BUILD_OFFICIAL=1
export MOZILLA_OFFICIAL=1
export MOZ_MAKE_FLAGS="$NUMJOBS"
export MACH_USE_SYSTEM_PYTHON="1"

# Clear some variables that could break the build
unset DBUS_SESSION_BUS_ADDRESS ORBIT_SOCKETDIR SESSION_MANAGER \
  XDG_SESSION_COOKIE XAUTHORITY MAKEFLAGS

# Assemble our .mozconfig:
echo > .mozconfig

# Tell .mozconfig about the selected compiler:
echo "export CC=\"${CC}\"" >> .mozconfig
echo "export CXX=\"${CXX}\"" >> .mozconfig

# Mozilla devs enforce using an objdir for building
# https://developer.mozilla.org/en/Configuring_Build_Options#Building_with_an_objdir
mkdir obj
echo "mk_add_options MOZ_OBJDIR=$(pwd)/obj" >> .mozconfig
# This directory is also needed or the build will fail:
mkdir -p obj

# Set options for $OPTIMIZE_FLAG:
echo "ac_add_options --enable-optimize=\"${OPTIMIZE_FLAG}\"" >> .mozconfig

if [ "$COMPILE_X86_UNDER_X86_64" = "true" ]; then
  # Compile for i686 under an x86_64 kernel:
  echo "ac_add_options --host=i686-pc-linux-gnu" >> .mozconfig
  echo "ac_add_options --target=i686-pc-linux-gnu" >> .mozconfig
fi

# Add the $OPTIONS above to .mozconfig:
for option in $OPTIONS; do echo "ac_add_options $option" >> .mozconfig; done

# Build and install:
./mach build || exit 1
DESTDIR=$PKG ./mach install || exit 1

# Compress and if needed symlink the man pages:
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) ; do
          ln -s $( readlink $eachpage ).gz $eachpage.gz
          rm $eachpage
        done
        gzip -9 *.?
      )
    done
  )
fi

# Strip files:
find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null

# This remains the standard plugin directory for all browsers.
mkdir -p $PKG/usr/lib${LIBDIRSUFFIX}/mozilla/plugins

# This is traditional.
( cd $PKG/usr/lib${LIBDIRSUFFIX}
  if [ ! -e seamonkey ]; then
    ln -sf seamonkey-${VERSION} seamonkey
  fi
)

mkdir -p $PKG/usr/share/applications
cp -a $CWD/*.desktop $PKG/usr/share/applications
chown -R root:root $PKG/usr/share/applications
chmod 644 $PKG/usr/share/applications/*
mkdir -p $PKG/usr/share/pixmaps
cp -a $CWD/*.png $PKG/usr/share/pixmaps
chown -R root:root $PKG/usr/share/pixmaps
chmod 644 $PKG/usr/share/pixmaps/*

mkdir -p $PKG/usr/doc/seamonkey-$VERSION
cp -a \
  AUTHORS LEGAL LICENSE README.txt \
  $PKG/usr/doc/seamonkey-$VERSION

# Fix duplicate binary, https://bugzilla.mozilla.org/show_bug.cgi?id=658850
( cd $PKG/usr/lib$LIBDIRSUFFIX/seamonkey
  if cmp seamonkey seamonkey-bin ; then
    ln -sf seamonkey-bin seamonkey
  fi
)

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
zcat $CWD/doinst.sh.gz | sed -e "s#usr/lib#usr/lib${LIBDIRSUFFIX}#g" \
  > $PKG/install/doinst.sh

cd $TMP/package-seamonkey
/sbin/makepkg -l y -c n -p $TMP/seamonkey-$TARBALLVER-$ARCH-$BUILD.txz