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Split uninstall.sh into an interactive and non-interactive version.
The non-interactive version can be called by a Homebrew Cask formula. Also, change some AppleScript to reference applications by their IDs rather than their names, which should make them slightly more robust.
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,156 @@ | ||
| #!/bin/bash | ||
| # vim: tw=120: | ||
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| # This file is part of Background Music. | ||
| # | ||
| # Background Music is free software: you can redistribute it and/or | ||
| # modify it under the terms of the GNU General Public License as | ||
| # published by the Free Software Foundation, either version 2 of the | ||
| # License, or (at your option) any later version. | ||
| # | ||
| # Background Music is distributed in the hope that it will be useful, | ||
| # but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| # GNU General Public License for more details. | ||
| # | ||
| # You should have received a copy of the GNU General Public License | ||
| # along with Background Music. If not, see <http://www.gnu.org/licenses/>. | ||
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| # | ||
| # _uninstall-non-interactive.sh | ||
| # | ||
| # Copyright © 2016 Nick Jacques | ||
| # Copyright © 2016, 2017 Kyle Neideck | ||
| # | ||
| # Removes BGMApp, BGMDriver and BGMXPCHelper from the system immediately. Run by uninstall.sh and the Homebrew formula. | ||
| # | ||
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| # TODO: Log commands and their output to uninstall.log, like build_and_install.sh does, rather than just sending | ||
| # everything to /dev/null. | ||
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| # TODO: Show a custom error message if the script fails, like build_and_install.sh. | ||
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| # Halt on errors. | ||
| set -e | ||
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| PATH=/bin:/sbin:/usr/bin:/usr/sbin; export PATH | ||
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| bold=$(tput bold) | ||
| normal=$(tput sgr0) | ||
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| app_path="/Applications/Background Music.app" | ||
| driver_path="/Library/Audio/Plug-Ins/HAL/Background Music Device.driver" | ||
| xpc_path1="/usr/local/libexec/BGMXPCHelper.xpc" | ||
| xpc_path2="/Library/Application Support/Background Music/BGMXPCHelper.xpc" | ||
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| # Check that files/directories are at most this big before we delete them, just to be safe. | ||
| max_size_mb_for_rm=15 | ||
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| file_paths=("${app_path}" "${driver_path}" "${xpc_path1}" "${xpc_path2}") | ||
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| bgmapp_process_name="Background Music" | ||
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| launchd_plist_label="com.bearisdriving.BGM.XPCHelper" | ||
| launchd_plist="/Library/LaunchDaemons/${launchd_plist_label}.plist" | ||
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| coreaudiod_plist="/System/Library/LaunchDaemons/com.apple.audio.coreaudiod.plist" | ||
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| user_group_name="_BGMXPCHelper" | ||
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| # We move files to this temp directory and then move the directory to the user's trash at the end of the script. | ||
| # Unfortunately, this means that if the user tries to use the "put back" feature the files will just go back to the | ||
| # temp directory. | ||
| trash_dir="$(mktemp -d -t UninstalledBackgroundMusicFiles)/" | ||
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| # Takes a path to a file or directory and returns false if the file/directory is larger than $max_size_mb_for_rm. | ||
| function size_check { | ||
| local size="$(du -sm "$1" 2>/dev/null | awk '{ print $1 }')" | ||
| [[ "${size}" =~ ^[0-9]+$ ]] && [[ "${size}" -le ${max_size_mb_for_rm} ]] | ||
| } | ||
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| # Ensure that the user can use sudo. (But not if this is a Travis CI build, because then it would fail.) | ||
| if ([[ -z ${TRAVIS:-} ]] || [[ "${TRAVIS}" != true ]]) && ! sudo -v; then | ||
| echo "ERROR: This script must be run by a user with administrator (sudo) privileges." >&2 | ||
| exit 1 | ||
| fi | ||
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| # Try to kill Background Music.app, in case it's running. | ||
| killall "${bgmapp_process_name}" &>/dev/null || true | ||
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| # TODO: Use | ||
| # mdfind kMDItemCFBundleIdentifier = "com.bearisdriving.BGM.App" | ||
| # to offer alternatives if Background Music.app isn't installed to /Applications. Or we could open it with | ||
| # open -b "com.bearisdriving.BGM.App" -- delete-yourself | ||
| # and have Background Music.app delete itself and close when it gets the "delete-yourself" argument. Though | ||
| # that wouldn't be backwards compatible. | ||
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| # Remove the files defined in file_paths | ||
| for path in "${file_paths[@]}"; do | ||
| if [ -e "${path}" ]; then | ||
| if size_check "${path}"; then | ||
| echo "Moving \"${path}\" to the trash." | ||
| sudo mv -f "${path}" "${trash_dir}" &>/dev/null | ||
| else | ||
| echo "Error: Refusing to delete \"${path}\" because it was much larger than expected." >&2 | ||
| fi | ||
| fi | ||
| done | ||
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| echo "Removing Background Music launchd service." | ||
| sudo launchctl list | grep "${launchd_plist_label}" >/dev/null && \ | ||
| (sudo launchctl bootout system "${launchd_plist}" &>/dev/null || \ | ||
| # Try older versions of the command in case the user has an old version of launchctl. | ||
| sudo launchctl unbootstrap system "${launchd_plist}" &>/dev/null || \ | ||
| sudo launchctl unload "${launchd_plist}" >/dev/null) || \ | ||
| echo " Service does not exist." | ||
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| echo "Removing Background Music launchd service configuration file." | ||
| if [ -e "${launchd_plist}" ]; then | ||
| sudo mv -f "${launchd_plist}" "${trash_dir}" | ||
| fi | ||
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| # Be paranoid about user_group_name because we really don't want to delete every user account. | ||
| if ! [[ -z ${user_group_name} ]] && [[ "${user_group_name}" != "" ]]; then | ||
| echo "Removing Background Music user." | ||
| dscl . -read /Users/"${user_group_name}" &>/dev/null && \ | ||
| sudo dscl . -delete /Users/"${user_group_name}" 1>/dev/null || \ | ||
| echo " User does not exist." | ||
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| echo "Removing Background Music group." | ||
| dscl . -read /Groups/"${user_group_name}" &>/dev/null && \ | ||
| sudo dscl . -delete /Groups/"${user_group_name}" 1>/dev/null || \ | ||
| echo " Group does not exist." | ||
| else | ||
| echo "Warning: could not delete the Background Music user/group due to an internal error in $0." >&2 | ||
| fi | ||
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| # We're done removing files, so now actually move trash_dir into the trash. And if that fails, just delete it normally. | ||
| osascript -e 'tell application id "com.apple.finder" | ||
| move the POSIX file "'"${trash_dir}"'" to trash | ||
| end tell' >/dev/null 2>&1 \ | ||
| || rm -rf "${trash_dir}" \ | ||
| || true | ||
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| echo "Restarting Core Audio." | ||
| # Wait a little because moving files to the trash plays a short sound. | ||
| sleep 2 | ||
| # The extra or-clauses are fallback versions of the command that restarts coreaudiod. Apparently some of these commands | ||
| # don't work with older versions of launchctl, so I figure there's no harm in trying a bunch of different ways until | ||
| # one works. | ||
| (sudo launchctl kill SIGTERM system/com.apple.audio.coreaudiod &>/dev/null || \ | ||
| sudo launchctl kill TERM system/com.apple.audio.coreaudiod &>/dev/null || \ | ||
| sudo launchctl kill 15 system/com.apple.audio.coreaudiod &>/dev/null || \ | ||
| sudo launchctl kill -15 system/com.apple.audio.coreaudiod &>/dev/null || \ | ||
| (sudo launchctl unload "${coreaudiod_plist}" &>/dev/null && \ | ||
| sudo launchctl load "${coreaudiod_plist}" &>/dev/null) || \ | ||
| sudo killall coreaudiod &>/dev/null) | ||
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| echo "..." | ||
| sleep 3 | ||
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| # TODO: What if they only have one audio device? | ||
| echo "" | ||
| echo "${bold}Done! Toggle your audio output device in the Sound section of System Preferences to finish" \ | ||
| "uninstalling. (Or just restart your computer.)${normal}" | ||
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