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# Maintainer (arch): Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>
# Contributor (arch): Ionut Biru <ibiru@archlinux.org>
# Contributor (arch): Jakub Schmidtke <sjakub@gmail.com>
# Maintainer (connochaetos): Henry Jensen <hjensen@connochaetos.org>
# Maintainer (alarm): Kevin Mihelich <kevin@archlinuxarm.org>
# Maintainer (arch32): Andreas Baumann <mail@andreasbaumann.cc>
# Contributor (arch32): Erich Eckner <git@eckner.net>
# Contributor: Andreas Grapentin <andreas@grapentin.org>
# Contributor: Luke Shumaker <lukeshu@parabola.nu>
# Contributor: André Silva <emulatorman@hyperbola.info>
# Contributor: Márcio Silva <coadde@hyperbola.info>
# Contributor: fauno <fauno@kiwwwi.com.ar>
# Contributor: vando <facundo@esdebian.org>
# Contributor: Figue <ffigue at gmail>
# Contributor: evr <evanroman at gmail>
# Contributor: Muhammad 'MJ' Jassim <UnbreakableMJ@gmail.com>
# Contributor: taro-k <taro-k@movasense_com>
# Contributor: Michał Masłowski <mtjm@mtjm.eu>
# Contributor: Luke R. <g4jc@openmailbox.org>
# Contributor: Isaac David <isacdaavid@isacdaavid.info>
# Contributor: bill-auger <bill-auger@programmer.net>
# Contributor: grizzlyuser <grizzlyuser@protonmail.com>


# Rational for inclusion in [libre]:
#  - Modify the addons pages to use GNU IceCat plugins sources, rather
#    than addons.mozilla.org, which hosts non-free addons.
#  - Disable EME, which is implemented via the non-free libWideVine
#    CDM.
#
# The above changes cause us to run afoul of the Firefox trademark
# policy[1], so making those changes also requires us to:
#  - Rebrand to Iceweasel
#
# technical:
#  - build i686 with GCC instead of clang
#  - disable rust-SIMD, LTO, PGO, and skip profiling build for armv7h and i686
# 
# privacy:
#  - Remove Google API keys and usage
#  - Disable Mozilla telemetry and crash reporting (good manners
#    because of all of the other patching we're doing)
#
# [1]: https://www.mozilla.org/en-US/foundation/trademarks/policy/


pkgname=iceweasel
replaces=('firefox')
epoch=1
pkgver=75.0
pkgrel=1
pkgrel+=.parabola3
_brandingver=75.0
_brandingrel=1
pkgdesc="Standalone web browser derived from Mozilla Firefox"
arch=(x86_64)
arch+=(i686 armv7h)
license=(MPL GPL LGPL)
url="https://wiki.parabola.nu/Iceweasel"
depends=(gtk3 libxt startup-notification mime-types dbus-glib ffmpeg nss
         ttf-font libpulse)
depends+=(sqlite icu)
makedepends=(unzip zip diffutils python2-setuptools yasm mesa imake inetutils
             xorg-server-xvfb autoconf2.13 rust clang llvm jack gtk2 python
             nodejs python2-psutil cbindgen nasm)
# FIXME: 'mozilla-serarchplugins' package needs re-working (see note in prepare())
makedepends+=(quilt libxslt imagemagick)
optdepends=('networkmanager: Location detection via available WiFi networks'
            'libnotify: Notification integration'
            'pulseaudio: Audio support'
            'speech-dispatcher: Text-to-Speech'
            'hunspell-en_US: Spell checking, American English')
options=(!emptydirs !makeflags !strip)
source=(https://archive.mozilla.org/pub/firefox/releases/$pkgver/source/firefox-$pkgver.source.tar.xz{,.asc}
        0001-Use-remoting-name-for-GDK-application-names.patch
        $pkgname.desktop)
source+=(https://repo.parabola.nu/other/iceweasel/${pkgname}_${_brandingver}-${_brandingrel}.branding.tar.xz{,.sig}
         libre.patch
         libre-searchengines.patch
         vendor.js.in)
source_armv7h=(arm.patch
               build-arm-libopus.patch)
source_i686=('rust-static-disable-network-test-on-static-libraries.patch'
             'avoid-libxul-OOM-python-check.patch')
sha256sums=('bbb1054d8f2717c634480556d3753a8483986af7360e023bb6232df80b746b0f'
            'SKIP'
            '5f7ac724a5c5afd9322b1e59006f4170ea5354ca1e0e60dab08b7784c2d8463c'
            'f573d00835afe066ef1887bfea35099933ee07aeadc4c0d603972127e600cfc4'
            'b64059188836fbb9522d0d0a0d669dfa77c4f075f350554e414bb023afbaea31'
            'SKIP'
            '3dbdf461f992394ca380700c229a6ce6220a07ba1c7f8475cc2ff39891447e56'
            'd783225c311a4d64a9196d573627aeecaf02365395eea9783b1175b7613bdf6e'
            'cc3d71eb493a3d53b1662567cae872f81ff99e0845d59ac402a890461c356183')
sha256sums_i686=('4da71f6614dce71db8e9ec2d317514aae90838c2c65620d435f0df06b45b578b'
                 '1882cd2a1689d41c3111abe45dab7215a5b292d5fff24fdde9af25af7b891a59')
sha256sums_armv7h=('bc00516032330760444939c516a60c78f868631e1b37f075f0fe71a53737b966'
                   '2d4d91f7e35d0860225084e37ec320ca6cae669f6c9c8fe7735cdbd542e3a7c9')
validpgpkeys=('14F26682D0916CDD81E37B6D61B7B526D98F0353') # Mozilla Software Releases <release@mozilla.com>
validpgpkeys+=('BFA8008A8265677063B11BF47171986E4B745536') # Andreas Grapentin

prepare() {
  mkdir mozbuild
  cd firefox-$pkgver

  # https://bugzilla.mozilla.org/show_bug.cgi?id=1530052
  echo "applying 0001-Use-remoting-name-for-GDK-application-names.patch"
  patch -Np1 -i ../0001-Use-remoting-name-for-GDK-application-names.patch

  cat >../mozconfig <<END
ac_add_options --enable-application=browser

ac_add_options --prefix=/usr
ac_add_options --enable-release
ac_add_options --enable-hardening
ac_add_options --enable-optimize
ac_add_options --enable-rust-simd
export CC='clang --target=x86_64-unknown-linux-gnu'
export CXX='clang++ --target=x86_64-unknown-linux-gnu'
export AR=llvm-ar
export NM=llvm-nm
export RANLIB=llvm-ranlib

# Branding
ac_add_options --disable-official-branding
ac_add_options --with-branding=browser/branding/iceweasel
ac_add_options --enable-update-channel=release
ac_add_options --with-distribution-id=nu.parabola
ac_add_options --with-unsigned-addon-scopes=app,system
ac_add_options --allow-addon-sideload
export MOZ_APP_REMOTINGNAME=${pkgname//-/}
export MOZ_TELEMETRY_REPORTING=
export MOZ_REQUIRE_SIGNING=

# System libraries
ac_add_options --with-system-nspr
ac_add_options --with-system-nss

# Features
ac_add_options --enable-alsa
ac_add_options --enable-jack
ac_add_options --enable-startup-notification
ac_add_options --disable-crashreporter
ac_add_options --disable-gconf
ac_add_options --disable-updater
ac_add_options --disable-tests
ac_add_options --disable-eme
END

  ## [ARCH-SPECIFIC CONFIG] ##
  case ${CARCH} in
    armv7h)
      sed -i '
        /--enable-hardening/d
        /--enable-optimize/d
        /--enable-rust-simd/d
      ' ../mozconfig

      cat >>../mozconfig <<END
export CC=clang
export CXX=clang++
ac_add_options --disable-webrtc
ac_add_options --disable-elf-hack

# https://bugzilla.redhat.com/show_bug.cgi?id=1641623
ac_add_options --disable-av1
ac_add_options --enable-optimize="-g0 -O2"
END
# mk_add_options MOZ_MAKE_FLAGS=${MAKEFLAGS} # from archlinuxarm

      # mozbuild.configure.options.InvalidOptionError: --disable-eme is not available in this configuration
      # EME is disabled anyway in the built package, but better check if it exists for ARM each new release.
      sed -i 's|ac_add_options --disable-eme||' ../mozconfig

      echo "applying arm.patch"
      patch -p1 -i ../arm.patch
      echo "applying build-arm-libopus.patch"
      patch -p1 -i ../build-arm-libopus.patch
    ;;
    i686)
      # disable LTO and use gcc toolchain (clang has issues on IA32)
      export MOZ_SOURCE_CHANGESET="DEVEDITION_${pkgver//./_}_RELEASE"
      cat >>../mozconfig <<END
ac_add_options --disable-rust-simd
ac_add_options --disable-lto
export CC=gcc
export CXX=g++
export AR=gcc-ar
export NM=gcc-nm
export RANLIB=gcc-ranlib
END

      # test failure in rust code (complaining about network functions) when PGO is used,
      # see https://bugzilla.mozilla.org/show_bug.cgi?id=1565757
      echo "applying rust-static-disable-network-test-on-static-libraries.patch"
      patch -p1 -i "$srcdir"/rust-static-disable-network-test-on-static-libraries.patch

      # readelf: Error: Unable to seek to 0x801db328 for section headers
      echo "applying avoid-libxul-OOM-python-check.patch"
      patch -p1 -i "$srcdir"/avoid-libxul-OOM-python-check.patch
    ;;
    x86_64)
    ;;
    *) echo "no [ARCH-SPECIFIC CONFIG] for arch: ${CARCH}" ; return 1 ;
    ;;
  esac


  ## branding ##

  echo "applying parabola branding"
  local brandingsrcdir="${srcdir}/${pkgname}-${_brandingver}"
  local brandingdestdir=browser/branding/${pkgname}
  rm -rf -- ${brandingdestdir}
  cp -aT -- ${brandingsrcdir}/branding ${brandingdestdir}
  # TODO: dont know what aboutlogins.svg is supposed to be or where it is presented
  #         but it seems to be essential
  cp ${brandingdestdir}/iceweasel_logo.svg ${brandingdestdir}/content/aboutlogins.svg

  # custom new tab page
  # FIXME: the newtab page (aka "Start Page") has changed significantly
  #        the new upstream start page ('activity-streams') is an add-on now
  #        it must be forked and customized externally, then copied into the browser tree
  #        see: the branding-dev-build/ dir on the '68.0' branch of the branding git repo
  #        that will also be useful for creating a replacement 'mozilla-searchplugins' package
  #        some of the branding components above and commented out below may no longer be used
  #        the following section aims to restore something similar
  #          to the previous parabola-branded "start page"
  #        once it is working well, all of these comments should be removed
  #          and any unused branding components may be deleted from the branding package
  # Put "Start Page" branding images in the source code
  #install -m644 -t browser/base/content/abouthome -- \
  #  "${brandingsrcdir}/branding"/{drm-free,gnu_headshadow,parabola-banner}.png
  #install -m644 -t browser/extensions/onboarding/content/img -- \
  #   "${brandingsrcdir}/branding/watermark.svg"

  # produce icons
  for i in 16 22 24 32 48 64 128 192 256 384; do
    rsvg-convert -w $i -h $i "${brandingsrcdir}/branding/${pkgname}_icon.svg" \
      -o "${brandingdestdir}/default$i.png"
  done

  # apply branding patches
  export QUILT_PATCHES="${brandingsrcdir}"/patches
  export QUILT_REFRESH_ARGS='-p ab --no-timestamps --no-index'
  export QUILT_DIFF_ARGS='--no-timestamps'
  quilt push -av


  ## libre patching ##

  # Remove remaining non-free bits
  echo "applying libre.patch"
  patch -Np1 -i "$srcdir/libre.patch"

  # Disable various components at the source level
  sed -i 's/;1/;0/' toolkit/components/telemetry/components.conf
  #sed -i 's/;1/;0/' browser/experiments/Experiments.manifest
  #sed -i '/pocket/d'          browser/extensions/moz.build
  #sed -i '/activity-stream/d' browser/extensions/moz.build

  # Load custom searchplugins
  # FIXME: no longer applicable - replace with (broken) replacement fo libre/mozilla-searchplugins
  #        https://git.parabola.nu/packages/iceweasel.git/tree/branding-dev-build/mozilla-searchplugins?h=68.0
#   rm -rvf -- browser/components/search/searchplugins/{*.xml,images/}
#   cp -av -- /usr/lib/mozilla/searchplugins/* browser/components/search/searchplugins/

  # Patch search-engines config
  # FIXME: custom searchplugins ID per new format above ("ddg" is standard)
  #        browser/components/search/extensions/<ID>/
#   local _remove_engines_sed='s|.*oogle.*|          "ddg", "duckduckgo-html", "duckduckgo-lite", "internet-archive", "parabola-labs", "parabola-packages", "parabola-wiki-en", "searx", "wikipedia", "yacy"|g'
  local _remove_engines_sed='s|.*oogle.*|          "ddg", "wikipedia"|g'
  local _search_config_file=browser/components/search/extensions/list.json
  echo "applying libre-searchengines.patch"
  patch -Np1 -i "$srcdir/libre-searchengines.patch"
  sed -i "${_remove_engines_sed}" ${_search_config_file}

  # Sanity-check search-engines patching
  _removed_engines_regex='Bing|Google|Seznam|Twitter|Yahoo|Yandex|Яндекс|amazon|bing|google|ebay|twitter'
  _err_msg="search-engines patch needs re-working"
  ! grep -E ${_removed_engines_regex} ${_search_config_file} > /dev/null || ! echo "${_err_msg}"
}

build() {
  cd firefox-$pkgver

  export MOZ_NOSPAM=1
  export MOZBUILD_STATE_PATH="$srcdir/mozbuild"

  # LTO needs more open files
  ulimit -n 4096

  ## [ARCH-SPECIFIC BUILD ENV] ##
  if [[ $CARCH != armv7h ]]; then
    # -fno-plt with cross-LTO causes obscure LLVM errors
    # LLVM ERROR: Function Import: link error
    CFLAGS="${CFLAGS/-fno-plt/}"
    CXXFLAGS="${CXXFLAGS/-fno-plt/}"
  fi
  if [[ $CARCH != i686 ]]; then
    # DEBUG: clang-9: error: unknown argument: '-fvar-tracking-assignments'
    CFLAGS="${CFLAGS/-fvar-tracking-assignments/}"
    CXXFLAGS="${CXXFLAGS/-fvar-tracking-assignments/}"
  fi
  case ${CARCH} in
    armv7h)
      export MOZ_DEBUG_FLAGS=" "
      export CFLAGS+=" -g0"
      export CXXFLAGS+=" -g0"
      export LDFLAGS+=" -Wl,--no-keep-memory -Wl,--reduce-memory-overheads"
      export RUSTFLAGS="-Cdebuginfo=0"
    ;;
    i686)
      # disable LTO (clang has issues on IA32)
      export RUSTFLAGS+=" -Cdebuginfo=0 -Clto=off"
      export LDFLAGS+=" -Wl,--no-keep-memory -Wl,--reduce-memory-overheads"

      # libvpx has some hard-coded compiler flags for MMX, SSE, SSE2, use the correct one
      # per CARCH (75.0 uses an intrisic _mm_empty now, which required the corresponding
      # architecture flag to be preset - before it was merely embedding some assembly
      # code with EMMS
      export CFLAGS+=" -mmmx"
      export CXXFLAGS+=" -mmmx"
    ;;
  esac

  ## [ARCH-SPECIFIC BUILD CONFIG] ##
  case ${CARCH} in
    armv7h)
      # skipping PGO "instrumented browser"; so we have the final .mozconfig now
      cp ../mozconfig .mozconfig
    ;;
    i686)
      # do not do profiling on i686: ..or it will for sure run out of memory - it doesn't find libraries:
      # "XPCOMGlueLoad error for file /build/firefox/src/firefox-70.0/obj-i686-pc-linux-gnu/dist/firefox/libxul.so:
      # libmozsandbox.so: cannot open shared object file: No such file or directory
      # Couldn't load XPCOM."

      # avoid excessive debug symbols in rust leading to out-of-memory situations
      sed -i "s/debug_info = '\''2'\''/debug_info = '\''0'\''/" build/moz.configure/toolchain.configure

      # skipping PGO "instrumented browser"; so we have the final .mozconfig now
      cp ../mozconfig .mozconfig
    ;;
    x86_64)
      # Do 3-tier PGO
      echo "Building instrumented browser..."
      cat >.mozconfig ../mozconfig - <<END
ac_add_options --enable-profile-generate=cross
END
      ./mach build

      echo "Profiling instrumented browser..."
      ./mach package
      LLVM_PROFDATA=llvm-profdata \
        JARLOG_FILE="$PWD/jarlog" \
        xvfb-run -s "-screen 0 1920x1080x24 -nolisten local" \
        ./mach python build/pgo/profileserver.py

      if [[ ! -s merged.profdata ]]; then
        echo "No profile data produced."
        return 1
      fi

      if [[ ! -s jarlog ]]; then
        echo "No jar log produced."
        return 1
      fi

      echo "Removing instrumented browser..."
      ./mach clobber

      cat >.mozconfig ../mozconfig - <<END
ac_add_options --enable-lto=cross
ac_add_options --enable-profile-use=cross
ac_add_options --with-pgo-profile-path=${PWD@Q}/merged.profdata
ac_add_options --with-pgo-jarlog=${PWD@Q}/jarlog
END
    ;;
    *) echo "no [ARCH-SPECIFIC BUILD CONFIG] for arch: ${CARCH}" ; return 1 ;
    ;;
  esac

  # sanity checks
  # each of the [ARCH-SPECIFIC BUILD CONFIG] branches above should have created .mozconfig
  [[ ! -f .mozconfig ]] && echo ".mozconfig file not found in source root" && return 1

  echo "Building optimized browser..."
  ./mach build

  echo "Building symbol archive..."
  ./mach buildsymbols
}

package() {
  local _icu_ver
  _icu_ver=$(pacman -S --print-format='%v' icu)
  depends+=("icu>=${_icu_ver}" "icu<$((${_icu_ver%%.*} + 1))")

  cd firefox-$pkgver
  DESTDIR="$pkgdir" ./mach install

  local vendorjs="$pkgdir/usr/lib/$pkgname/browser/defaults/preferences/vendor.js"
  install -Dvm644 /dev/stdin "$vendorjs" <<END
// Use LANG environment variable to choose locale
pref("intl.locale.requested", "");

// Use system-provided dictionaries
pref("spellchecker.dictionary_path", "/usr/share/hunspell");

// Disable default browser checking.
pref("browser.shell.checkDefaultBrowser", false);

// Don't disable extensions in the application directory
pref("extensions.autoDisableScopes", 11);
END

  # Parabola additions to vendor.js
  local _shortver=$(cut -d. -f1,2 <<<"$pkgver")
  cat "${srcdir}"/vendor.js.in >> "$vendorjs"
  sed -i "s|@_SHORTVER_@|$_shortver|g" "$vendorjs"

  local distini="$pkgdir/usr/lib/$pkgname/distribution/distribution.ini"
  install -Dvm644 /dev/stdin "$distini" <<END
[Global]
id=parabola
version=1.0
about=Iceweasel for Parabola GNU/Linux-libre

[Preferences]
app.distributor=parabola
app.distributor.channel=$pkgname
app.partner.parabola=parabola
END

  local i
  for i in 16 22 24 32 48 64 128 192 256 384; do
    install -Dvm644 browser/branding/$pkgname/default$i.png \
      "$pkgdir/usr/share/icons/hicolor/${i}x${i}/apps/$pkgname.png"
  done
  install -Dvm644 "browser/branding/$pkgname/${pkgname}_icon.svg" \
    "$pkgdir/usr/share/icons/hicolor/scalable/apps/$pkgname.svg"

  install -Dvm644 ../$pkgname.desktop \
    "$pkgdir/usr/share/applications/$pkgname.desktop"

  # Install a wrapper to avoid confusion about binary path
  install -Dvm755 /dev/stdin "$pkgdir/usr/bin/$pkgname" <<END
#!/bin/sh
exec /usr/lib/$pkgname/$pkgname "\$@"
END

  ## [ARCH-SPECIFIC INSTALL] ##
  case ${CARCH} in
    armv7h)
    ;;
    i686)
      # libxul.so cannot find it's libraries
      install -dm 755 "${pkgdir}"/etc/ld.so.conf.d
      echo "/usr/lib/${pkgname}" > "${pkgdir}"/etc/ld.so.conf.d/${pkgname}.conf
    ;;
    x86_64)
    ;;
    *) echo "no [ARCH-SPECIFIC INSTALL] for arch: ${CARCH}" ; return 1 ;
    ;;
  esac

  # Replace duplicate binary with wrapper
  # https://bugzilla.mozilla.org/show_bug.cgi?id=658850
  ln -srfv "$pkgdir/usr/bin/$pkgname" "$pkgdir/usr/lib/$pkgname/$pkgname-bin"

  # Use system certificates
  local nssckbi="$pkgdir/usr/lib/$pkgname/libnssckbi.so"
  if [[ -e $nssckbi ]]; then
    ln -srfv "$pkgdir/usr/lib/libnssckbi.so" "$nssckbi"
  fi
}

# vim:set sw=2 et: