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FF_arkenfox_user.js/updater.sh
Pat Johnson 106f46d053 updater.sh restructuring/re-write (#541)
* Uses `perl` as a last resort if `curl` and `wget`  are not available (fixes #537)
* Aborts and notifies user if none of the above are installed 
* Better use of functions
* When version numbers are checked, the contents are immediately saved to a temp dir.  This allows us to skip using wget/curl/perl a second time
* Improved messages for users
* Added various font colors for ease of use and aesthetics
2018-11-19 17:34:14 +00:00

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#!/usr/bin/env bash
## ghacks-user.js updater for macOS and Linux
## version: 1.5
## Author: Pat Johnson (@overdodactyl)
## Additional contributors: @earthlng, @ema-pe
## DON'T GO HIGHER THAN VERSION x.9 !! ( because of ASCII comparison in check_for_update() )
#########################
# Base variables #
#########################
update_pref=${1:--ask}
RED='\033[0;31m'
BLUE='\033[0;34m'
BBLUE='\033[1;34m'
GREEN='\033[0;32m'
ORANGE='\033[0;33m'
CYAN='\033[0;36m'
NC='\033[0m' # No Color
#########################
# Working directory #
#########################
# get current directory
currdir=$(pwd)
## get the full path of this script (readlink for Linux, greadlink for Mac with coreutils installed)
sfp=$(readlink -f "${BASH_SOURCE[0]}" 2>/dev/null || greadlink -f "${BASH_SOURCE[0]}" 2>/dev/null)
## fallback for Macs without coreutils
if [ -z "$sfp" ]; then sfp=${BASH_SOURCE[0]}; fi
## store the Firefox profile directory
ff_profile="$(dirname "${sfp}")"
#########################
# File Handeling #
#########################
# Download method priority: curl -> wget -> pearl
DOWNLOAD_METHOD="not_pearl"
if [[ $(command -v "curl") ]] > /dev/null 2>&1; then
DOWNLOAD_TO_FILE="curl -O"
elif [[ $(command -v "wget") ]] > /dev/null 2>&1; then
DOWNLOAD_TO_FILE="wget"
elif [[ $(command -v "perl") ]]; then
DOWNLOAD_METHOD="perl"
else
echo -e ${RED}"This script requires curl, wget or perl to be installed.\nProcess aborted"${NC}
exit 0
fi
# Download files
download_file () {
mkdir -p userjs_temps
cd userjs_temps
url=$1
if [ $DOWNLOAD_METHOD = "not_pearl" ]; then
$DOWNLOAD_TO_FILE ${url}
else
http_url=${url/https/http}
# Variables from the shell are available in Perl's %ENV hash
# Need to export shell variable so it is visible to subprocesses
export http_url
perl -e '
use File::Fetch;
my $ff = File::Fetch->new(uri => $ENV{http_url});
my $where = $ff->fetch() or die $ff->error;
my $where = $ff->fetch( to => "." );
'
fi
cd ..
}
# Backup a file into userjs_backups
# Replace current version of a file with new one in userjs_temps
backup_file () {
filename=$1
mkdir -p userjs_backups
mv $filename "userjs_backups/${filename}.backup.$(date +"%Y-%m-%d_%H%M")"
mv "userjs_temps/${filename}" $filename
echo -e "Status: ${GREEN}${filename} has been backed up and replaced with the latest version!${NC}"
}
#########################
# Initiation #
#########################
initiate () {
echo -e
echo -e
echo -e ${BBLUE}" ############################################################################"
echo -e " #### ####"
echo -e " #### ghacks user.js ####"
echo -e " #### Hardening the Privacy and Security Settings of Firefox ####"
echo -e " #### Maintained by @Thorin-Oakenpants and @earthlng ####" ####"
echo -e " #### Updater for macOS and Linux by @overdodactyl ####" ####"
echo -e " #### ####"
echo -e " ############################################################################"${NC}
echo -e
echo -e
echo -e "Documentation for this script is available here: ${CYAN}https://github.com/ghacksuserjs/ghacks-user.js/wiki/3.3-Updater-Scripts${NC}\n"
}
confirmation () {
download_file "https://raw.githubusercontent.com/ghacksuserjs/ghacks-user.js/master/user.js" &>/dev/null
echo -e "Please observe the following information:"
echo -e "\tFirefox profile: ${ORANGE}$(pwd)${NC}"
echo -e "\tAvailable online: ${ORANGE}$(get_userjs_version userjs_temps/user.js)${NC}"
echo -e "\tCurrently using: ${ORANGE}$(get_userjs_version user.js)\n${NC}\n"
echo -e "This script will update to the latest user.js file and append any custom configurations from user-overrides.js. ${RED}Continue Y/N? ${NC}"
read -p "" -n 1 -r
echo -e "\n"
if [[ $REPLY =~ ^[Nn]$ ]]; then
echo -e ${RED}"Process aborted"${NC}
return 1
fi
}
#########################
# Update updater.sh #
#########################
# Returns the version number of a updater.sh file
get_updater_version () {
filename=$1
version_regex='5 s/.*[[:blank:]]\([[:digit:]]*\.[[:digit:]]*\)/\1/p'
echo "$(sed -n "$version_regex" "${ff_profile}/${filename}")"
}
# Update updater.sh
# Default: Check for update, if available, ask user if they want to execute it
# Args:
# -donotupdate: New version will not be looked for and update will not occur
# -update: Check for update, if available, execute without asking
update_updater () {
update_pref="$(echo $update_pref | tr '[A-Z]' '[a-z]')"
if [ $update_pref = "-donotupdate" ]; then
# User signified not to check for updates
return 0
fi
download_file "https://raw.githubusercontent.com/ghacksuserjs/ghacks-user.js/master/updater.sh" &>/dev/null
if [[ $(get_updater_version updater.sh) < $(get_updater_version userjs_temps/updater.sh) ]]; then
if [ $update_pref != "-update" ]; then
echo -e "There is a newer version of updater.sh available. ${RED}Download and execute Y/N?${NC}"
read -p "" -n 1 -r
echo -e "\n\n"
if [[ $REPLY =~ ^[Nn]$ ]]; then
# Update available, but user chooses not to update
return 0
fi
fi
else
# No update available
return 0
fi
# Backup current updater, execute latest version
backup_file updater.sh
chmod +x updater.sh
./updater.sh -donotupdate
exit 1
}
#########################
# Update user.js #
#########################
# Returns version number of a user.js file
get_userjs_version () {
filename=$1
echo "$(sed -n "4p" "${ff_profile}/${filename}")"
}
# Applies latest version of user.js and any custom overrides
update_userjs () {
backup_file user.js
if [ -e user-overrides.js ]; then
cat user-overrides.js >> user.js
echo -e "Status: ${GREEN}Your user-overrides.js customizations have been applied!${NC}"
fi
}
#########################
# Execute #
#########################
## change directory to the Firefox profile directory
cd "$ff_profile"
initiate
update_updater
confirmation && update_userjs
rm -rf userjs_temps
cd "${currdir}"