firefox_updater.sh

#!/bin/bash
#
# Cron script to update Mozilla Firefox build editions
# Targeted OS: Fedora 23 - will probably work on most
# Default Firefox version: Firefox Developer Edition (aurora)
# Leaves files in the following spots:
#	/opt/firefox-dev
#	/usr/share/applications/firefox-dev.desktop
#
# set -x
# INSTALL_DIR is assumed to not be changed in the below base64 block
# (the .desktop file) Will require you to pipe that through
# `base64 -d | gunzip > file` if you want to change that
INSTALL_DIR="/opt/firefox-dev"
ARCH="linux64"
LANG="en-US"
PRODUCT="firefox-aurora-latest-ssl"
LATEST_TAR_URL="https://download.mozilla.org/?product=${PRODUCT}&os=${ARCH}&lang=${LANG}"
TEMPFILE="$(mktemp -t firefox-dev.XXXX)"
XDG_APPS="/usr/share/applications"
MOZ_PROFILE_PATH="$HOME/.mozilla/firefox"
APPLICATION_FILE="${INSTALL_DIR}/firefox-dev.desktop"

chcon_firefox() {
        sudo chcon -u system_u -r object_r "$@"
}

get_default_profile() {
	while IFS='=' read -r var val; do
		if [[ "$var" == \[*\] ]]; then
			section=$( a=${var/[}; a=${a/]}; echo $a )
			section_a+=($section)
		elif [[ $val ]]; then
			declare -A "${section}[${var}]=${val}"
		fi
	done < "${1}"
	for i in "${section_a[@]}"; do
		if [[ "$(eval echo \${$i[Default]})" == 1 ]]; then
			eval echo "\${$i[Path]}"
		fi
	done
}

wrap_pref() {
	echo "user_pref(\"$1\", $2);"
}

wget --quiet -O "${TEMPFILE}" "${LATEST_TAR_URL}" &&
if [[ ! -d ${INSTALL_DIR} ]]; then
	sudo mkdir -p "${INSTALL_DIR}"
else
	sudo find "${INSTALL_DIR:?ERROR DIR NULL}" -mindepth 1 -delete
fi
sudo tar --strip-components=1 -C "${INSTALL_DIR}" -xf "${TEMPFILE}"
rm -f "${TEMPFILE}"
# Set selinux contexts modeled after Fedora's firefox package
if selinuxenabled; then
	chcon_firefox -t lib_t                  "${INSTALL_DIR}/" -R
	chcon_firefox -t mozilla_exec_t         "${INSTALL_DIR}/"firefox{,-bin}
	chcon_firefox -t mozilla_plugin_exec_t  "${INSTALL_DIR}/plugin-container"
	chcon_firefox -t bin_t                  "${INSTALL_DIR}/run-mozilla.sh"
fi
# Check for firefox-dev.desktop file
if [[ ! -f ${APPLICATION_FILE} ]]; then
	# I compressed the file here just to save space because I wanted to keep a
	# monolithic script. One assumption inside the file is the path /opt/firefox-dev/firefox
	cat <<-EOF | base64 -d | sudo sh -c "gunzip -c > \"${APPLICATION_FILE}\""
	H4sIAEDluFYAA41Vz28bRRS+718xF05o7TYnJGsPKU1RhAgRqTBSZFVj77N36tmZ1cys7eRE0jat
	FFcIJIoKqkSkUpOKqIQfFQjoZdv/Yd0cfQHZfwRv19511kkKB9tP733z3jfvfX6zeRV028iArAij
	tmrWx6A0k8K5XLpkrVEfnGtMQVP2yFXoAJcBKLLiMoMQ6z0QoFgjRVWhTq4o2dWgTvs3G7TmrNEO
	tKgrFelCvRjVteSk7ER/kUBJj0dHr17Ay/sFEOg3pWhigeGd+Hh4Lz5+/Sw+JvHgpD/ci5+iC79P
	+kU0w4LVqq2BUyaKIZWWYS1qIFSkulDHC1Oq9ei5aEWHevvV54UwMzVndv8zR28ixdHuk9HuYHTr
	wejWH+n3Yep5XgC2Zc2ZfPM7Gf/WHz/6c/L1j5NvPy0ARB05gjEcFvss+JTeOSMQIj9EFyLyonQB
	pltX29DiL++4VLUpwa4VEeb0VBavHJgbVz56E0C3a86qMKAEmNn4weOMunRh+rozvRiPHiN9sN6V
	vg/CzJpNjAdp7pl7rrcQQpKIFXgqmTyuk4tlShPREdFGRQcC2qQqFXdJlblpxjA/4gJS9UnGluhQ
	NUHk4VyeIZAAb8ppoWCiz/jX4U58FA/ipyT+Jf7+9eHwLol/GN6NB8O9k/6CYkl8HA9IJmky3EMT
	ASf9+Nk8Kcp4AyVMc1ZMkFTXrBPepHNcpmnkhrRzdA5IVL1MOoxHBy0vOuDRzyRXOH7ydqf6XtEB
	l4oSVmxpUd67X/zz4Ke/nwxGO1+Ndl6Mdh7muJm6J49uk/Fn/cmX+LP/eLz/cLx/D40clmh8A1tM
	gug7glzNKbqJynFBtUEQDyfBFq+TSP3Cs/LiWFHugkGiCpm2lMxBZj5oQc/28rTmL4Akql/PhJ6U
	yW4wV1ui94QmTXlin+uotZUeNJyyDEy5Od3GtgudzCZvhdZqA1f2GcBsG5QZRnXZl9uJcXnpnVIg
	WtZ1UD4TlDtNynHQ17cCcJaDgLMGTbf7B8yH1GmgZ8qe8XkltXpo0Dmu3EtCby96O8ItJQU5p6Ve
	OI2nx300erZueOCD7VHhciToGROc79UVa8NQZcJgTRrW3HKMClGVuKNbUjHQyf7qStWu4F92tn8r
	1vuwhT5XO9i+yqwJlazVFWu5kVDUjoCu3WXCld1KYgaKdTBv5rKsT+zZ22hfYxzsVaEN5dzOXshL
	paUly9rM3s9pVjJPWpu+nx8GqFZK1qCLuyXx//c0z01apHc2+fo0/v+K2Avp0qr/Aq7c23ULCAAA
	EOF
	# Let's deposit the real file into /opt/firefox-dev/ and link to it
	# so that if the user just removes the /opt dir, and forgets the link
	# it doesn't point to anything
	if [[ ! -f "${XDG_APPS}/${APPLICATION_FILE##*/}" ]]; then
		sudo ln -sf "${APPLICATION_FILE}" "${XDG_APPS}/"
	fi
fi
if [[ -d ${MOZ_PROFILE_PATH} ]]; then
	DEFAULT_PROFILE="${MOZ_PROFILE_PATH}/$(get_default_profile "${MOZ_PROFILE_PATH}/profiles.ini")"
	DEFAULT_PROFILE_PREFS="${DEFAULT_PROFILE}/prefs.js"
	pref_a=("app.update.enabled" "app.update.auto")
	pids="$(pidof firefox)"
	
	if [[ -f "${DEFAULT_PROFILE_PREFS}" ]]; then
		for i in "${pref_a[@]}"; do
			line="$(wrap_pref "$i" "false")"
			if ! grep -q "$line" "${DEFAULT_PROFILE_PREFS}"; then
				# Firefox re-writes prefs.js when closed
				# So we close it first, then write
				if [[ $pids ]]; then
					kill -TERM "$pids"
				fi
				echo "$line" >> "${DEFAULT_PROFILE_PREFS}"
			fi
		done
	fi
fi