143 lines
3.3 KiB
Bash
Executable File
143 lines
3.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Crow's Nest
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# A multiple Cam and Stream Service for mainsailOS
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# Written by Stephan Wendel aka KwadFan
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# Copyright 2021
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# https://github.com/mainsail-crew/crowsnest
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# GPL V3
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#
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# patcher.sh - copies new templates to ist destinations.
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#
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########
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# shellcheck enable=requires-variable-braces
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set -e
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## Debug
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# set -x
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# Global Vars
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TITLE="crowsnest - A Webcam Daemon for Raspberry Pi OS"
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### Non root
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if [ ${UID} == '0' ]; then
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echo -e "DO NOT RUN THIS SCRIPT AS ROOT!\nExiting..."
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exit 1
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fi
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### noninteractive Check
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if [ -z "${DEBIAN_FRONTEND}" ]; then
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export DEBIAN_FRONTEND=noninteractive
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fi
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### Functions
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### Messages
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### Welcome Message
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function welcome_msg {
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echo -e "${TITLE}\n"
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echo -e "\tYou will be prompted for your 'sudo' password, if needed.\n"
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echo -e "\tSome Parts of the Installer requires 'root' privileges."
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}
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function goodbye_msg {
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echo -e "\nInstallation complete.\n\tPlease reboot your machine!"
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echo -e "I hope you enjoy crowsnest, GoodBye ..."
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}
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### General
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## These two functions are reused from custompios common.sh
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## Credits to guysoft!
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## https://github.com/guysoft/CustomPiOS
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function install_cleanup_trap() {
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# kills all child processes of the current process on SIGINT or SIGTERM
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trap 'cleanup' SIGINT SIGTERM
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}
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function cleanup() {
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# make sure that all child processed die when we die
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echo -e "Killed by user ...\r\nGoodBye ...\r"
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# shellcheck disable=2046
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[ -n "$(jobs -pr)" ] && kill $(jobs -pr) && sleep 5 && kill -9 $(jobs -pr)
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}
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##
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function err_exit {
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if [ "${1}" != "0" ]; then
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echo -e "ERROR: Error ${1} occured on line ${2}"
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echo -e "ERROR: Stopping $(basename "$0")."
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echo -e "Goodbye..."
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fi
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# shellcheck disable=2046
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[ -n "$(jobs -pr)" ] && kill $(jobs -pr) && sleep 5 && kill -9 $(jobs -pr)
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exit 1
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}
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### Init ERR Trap
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trap 'err_exit $? $LINENO' ERR
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function stop_webcamd {
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if [ "$(sudo systemctl is-active webcamd.service)" = "active" ]; then
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sudo systemctl stop webcamd
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fi
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}
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function diff_files {
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diff -s "${1}" "${2}"
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}
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function copy_service {
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local servicefile template
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template="/etc/systemd/system/webcamd.service"
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servicefile="${HOME}/crowsnest/file_templates/webcamd.service"
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if [ -n "$(diff_files "${template}" "${servicefile}")" ]; then
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echo -en "Copying webcamd.service file ...\r"
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sudo cp -rf "${servicefile}" "${template}" > /dev/null
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echo -e "Copying webcamd.service file ... [OK]\r"
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else
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echo -e "No update of 'webcamd.service' required."
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fi
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}
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function copy_logrotate {
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local logrotatefile template
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template="/etc/logrotate.d/webcamd"
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logrotatefile="${HOME}/crowsnest/file_templates/logrotate_webcamd"
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if [ -n "$(diff_files "${template}" "${logrotatefile}")" ]; then
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echo -en "Copying logrotate file ...\r"
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sudo cp -rf "${logrotatefile}" "${template}" > /dev/null
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echo -e "Copying logrotate file ... [OK]\r"
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else
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echo -e "No update of 'logrotate/webcamd' required."
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fi
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}
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function daemon_reload {
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echo -en "Reload systemd to enable new deamon ...\r"
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sudo systemctl daemon-reload
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echo -e "Reload systemd to enable new daemon ... [OK]"
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}
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#### MAIN
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install_cleanup_trap
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welcome_msg
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stop_webcamd
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copy_service
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copy_logrotate
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goodbye_msg
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exit 0
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