pkgbase=dhcp
pkgname=('dhcp' 'dhclient')
pkgver=4.4.3.P1
_pkgver=4.4.3-P1
pkgrel=2
arch=('x86_64')
license=('MPL 2.0.')
url="https://www.isc.org/dhcp/"
makedepends=('bash' 'iproute2')
source=("https://ftp.isc.org/isc/dhcp/${_pkgver}/${pkgbase}-${_pkgver}.tar.gz"
        'dhcpd4.service'
        'dhcpd6.service'
        "https://gitlab.isc.org/isc-projects/dhcp/-/commit/6c7e61578b1b449272dbb40dd8b98d03dad8a57a.diff")
md5sums=('36c6ca77212373b0cff478ae9e5d32af'
         '7045e63a5d294c761ce306084eec2c67'
         'a2ebf4460c049cbee3e49cb26a475f68'
         'eef25d700f3f054cf05ad3d786dc0f28')

build() {
  cd ${pkgname}-${_pkgver}

  # Define _GNU_SOURCE to fix IPV6.
  sed '/^CFLAGS="$CFLAGS/ s/INGS"/INGS -D_GNU_SOURCE"/' -i configure
  # use patches from LFS http://www.linuxfromscratch.org/blfs/view/cvs/basicnet/dhcp.html
  #patch -p1 -i ${srcdir}/6c7e61578b1b449272dbb40dd8b98d03dad8a57a.diff

  ./configure --prefix=/usr \
    --sysconfdir=/etc \
    --with-srv-lease-file=/var/state/dhcp/dhcpd.leases \
    --with-srv6-lease-file=/var/state/dhcp/dhcpd6.leases \
    --with-cli-lease-file=/var/state/dhclient/dhclient.leases \
    --with-cli6-lease-file=/var/state/dhclient/dhclient6.leases

  make -j1
}

package_dhcp() {
  pkgdesc="A DHCP server, client, and relay agent"
  backup=('etc/dhcpd.conf')
  install=dhcp.install

  cd ${pkgname}-${_pkgver}
  make DESTDIR=${pkgdir} install

  mkdir -p ${pkgdir}/var/state/dhcp

  # Install systemd service files
  install -D -m0644 ${srcdir}/dhcpd4.service ${pkgdir}/usr/lib/systemd/system/dhcpd4.service
  install -D -m0644 ${srcdir}/dhcpd6.service ${pkgdir}/usr/lib/systemd/system/dhcpd6.service
  ln -s dhcpd4.service ${pkgdir}/usr/lib/systemd/system/dhcp4.service
  ln -s dhcpd6.service ${pkgdir}/usr/lib/systemd/system/dhcp6.service
  
  # move back to config. This file is in backup array, so pacman will not overwrite a changed config.
  mv ${pkgdir}/etc/dhcpd.conf.example ${pkgdir}/etc/dhcpd.conf

  # Remove dhclient
  make -C client DESTDIR=${pkgdir} uninstall 

  install -Dm0644 LICENSE ${pkgdir}/usr/share/licenses/dhcp/LICENSE
}

package_dhclient() {
  _pkgname=dhcp
  pkgdesc="dhclient is standalone client from the dhcp package"
  depends=('bash' 'iproute2')

  cd ${_pkgname}-${_pkgver}
  make -C client DESTDIR=${pkgdir} install 

  install -m755 -d ${pkgdir}/usr/share/dhclient
  mv ${pkgdir}/etc/dhclient.conf.example ${pkgdir}/usr/share/dhclient/

  install -d ${pkgdir}/var/state/dhclient

  install -Dm0755 client/scripts/linux ${pkgdir}/sbin/dhclient-script
  install -Dm0644 LICENSE ${pkgdir}/usr/share/licenses/dhclient/LICENSE
}