# This is the source.sh script. It is executed by BPM in a temporary directory when compiling a source package
# BPM Expects the source code to be extracted into the automatically created 'source' directory which can be accessed using $BPM_SOURCE
# BPM Expects the output files to be present in the automatically created 'output' directory which can be accessed using $BPM_OUTPUT

DOWNLOAD="https://www.netfilter.org/projects/iptables/files/iptables-${BPM_PKG_VERSION}.tar.xz"
FILENAME="${DOWNLOAD##*/}"

# The prepare function is executed in the root of the temp directory
# This function is used for downloading files and putting them into the correct location
prepare() {
  wget "$DOWNLOAD"
  tar -xvf "$FILENAME" --strip-components=1 -C "$BPM_SOURCE"
}

# The build function is executed in the source directory
# This function is used to compile the source code
build() {
  ./configure --prefix=/usr      \
              --disable-nftables \
              --enable-libipq
  make
}

# The package function is executed in the source directory
# This function is used to move the compiled files into the output directory
package() {
  make DESTDIR="$BPM_OUTPUT" install

  # Install esvm service
  install -Dm755 "$BPM_WORKDIR"/iptables-flush.sh "$BPM_OUTPUT"/etc/esvm/scripts/iptables-flush.sh
  install -Dm644 "$BPM_WORKDIR"/iptables.esv "$BPM_OUTPUT"/etc/esvm/services/iptables.esv

  # Rules from Arch Linux
  install -Dm644 "$BPM_WORKDIR"/rules/empty.rules "$BPM_OUTPUT"/etc/iptables/iptables.rules
  install -Dm644 "$BPM_WORKDIR"/rules/empty.rules "$BPM_OUTPUT"/etc/iptables/ip6tables.rules
  install -Dm644 "$BPM_WORKDIR"/rules/*.rules -t "$BPM_OUTPUT"/usr/share/iptables/
  ln -srt "$BPM_OUTPUT"/etc/iptables "$BPM_OUTPUT"/usr/share/iptables/{empty,simple_firewall}.rules

  # Install package license
  install -Dm644 "$BPM_SOURCE"/COPYING "$BPM_OUTPUT"/usr/share/licenses/iptables/LICENSE
}