Initial commit

LICENSE

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+MIT License
+
+Copyright (c) 2024
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.txt

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+Prerequisites: gosu screen psmisc

app/app

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+#!/usr/bin/env bash
+set -e
+APP="$(realpath "$BASH_SOURCE")"
+APP_DIR="$(dirname "$APP")"
+APP_NAME="$(basename "$APP_DIR")"
+APP_SERVICES="${APP_DIR}.services"
+if [ "$1" == "source" ]; then
+	return
+fi
+source "$APP_DIR/bin/runcmd" "$@"

app/bin/attach

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+#!/usr/bin/env bash
+"$APP" onearg "$@"
+"$APP" exist "$1"
+source "$APP" service_env "$1"
+exec screen -r "$SERVICE_SCREEN_NAME"

app/bin/debug

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+#!/usr/bin/env bash
+"$APP" onearg "$@"
+"$APP" exist "$1"
+source "$APP" service_env "$1"
+if ! [ "$SERVICE_RUN" = "" ]; then
+	SERVICE_RUN_RAW="cd \"$SERVICE_CD\"; echo \"* pwd: \$PWD\"; exec ${SERVICE_RUN//"/\\"}"
+	echo "* bash: $SERVICE_RUN_RAW"
+	gosu "$SERVICE_USER" bash -c "$SERVICE_RUN_RAW"
+fi

app/bin/exist

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+#!/usr/bin/env bash
+if ! [ -d "$APP_SERVICES/$1" ]; then
+	echo "Service '$1' does not exist."
+	exit 1
+fi

app/bin/init

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+#!/usr/bin/env bash
+set +e
+echo "$APP_NAME service: $1"
+if [ "$1" = "start" ]; then
+	"$APP" list | while read -r SERVICE; do
+		"$APP" start "$SERVICE"
+	done
+	exit 0
+fi
+
+if [ "$1" = "stop" ]; then
+	"$APP" list | while read -r SERVICE; do
+		"$APP" stop "$SERVICE"
+	done
+	exit 0
+fi
+
+if [ "$1" = "restart" ]; then
+	"$APP" list | while read -r SERVICE; do
+		"$APP" stop "$SERVICE"
+	done
+	"$APP" list | while read -r SERVICE; do
+		"$APP" start "$SERVICE"
+	done
+	exit 0
+fi
+
+exit 1

app/bin/install

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+#!/usr/bin/env bash
+"$APP" onearg "$@"
+"$APP" exist "$1"
+source "$APP" service_env "$1"
+set +e
+"$APP" stop "$1"
+useradd -d "$SERVICE_HOME" "$SERVICE_USER"
+set -e
+if [ "$SERVICE_PRIVATE" = "1" ]; then
+	chown -hR "$SERVICE_USER" "$SERVICE_DIR"
+	chgrp -hR "$SERVICE_USER" "$SERVICE_DIR"
+	chmod -R o= "$SERVICE_DIR"
+fi
+
+for f in "$SERVICE_DIR/root"/*; do
+	if [ -e "$f" ]; then
+		mv "$f" "/"
+	fi
+done
+
+if [ -e "$SERVICE_DIR/install" ]; then
+	source "$SERVICE_DIR/install"
+fi

app/bin/list

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+#!/usr/bin/env bash
+for d in "$APP_SERVICES"/*/; do
+	if [ -e "$d" ]; then
+		echo "$(basename "$d")"
+	fi
+done

app/bin/onearg

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+#!/usr/bin/env bash
+if [ "$1" = "" ]; then
+	echo "No argument given."
+	exit 1
+fi
+
+if ! [ "$2" = "" ]; then
+	echo "Only one argument can be given."
+	exit 1
+fi

app/bin/runcmd

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+#!/usr/bin/env bash
+source "$APP_DIR/bin/""$@"

app/bin/screen_exists

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+#!/usr/bin/env bash
+screen -ls "$1" >/dev/null 2>&1
+echo $?

app/bin/service_env

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+#!/usr/bin/env bash
+"$APP" exist "$1"
+SERVICE_USER="${APP_NAME}_$1"
+SERVICE_SCREEN_NAME="$SERVICE_USER"
+SERVICE_DIR="$APP_SERVICES/$1"
+SERVICE_HOME="$SERVICE_DIR/home"
+source "$SERVICE_DIR/settings"

app/bin/start

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+#!/usr/bin/env bash
+"$APP" onearg "$@"
+"$APP" exist "$1"
+source "$APP" service_env "$1"
+
+echo "[$APP_NAME] Starting '$1' ..."
+if [ "$SERVICE_RUN" = "" ]; then
+	exit 0
+fi
+
+set +e
+ps -u "$SERVICE_USER"
+if [ "$?" = "0" ]; then
+	echo "Service is already running."
+	exit 0
+fi
+set -e
+SERVICE_RUN_RAW="cd \"$SERVICE_CD\"; exec ${SERVICE_RUN//"/\\"}"
+if [ "$SERVICE_SCREEN" = "1" ]; then
+	screen -dmS "$SERVICE_SCREEN_NAME" gosu "$SERVICE_USER" bash -c "$SERVICE_RUN_RAW"
+else
+	gosu "$SERVICE_USER" nohup bash -c "$SERVICE_RUN_RAW" > /dev/null 2>&1 &
+fi
+

app/bin/stop

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+#!/usr/bin/env bash
+"$APP" onearg "$@"
+"$APP" exist "$1"
+
+echo "[$APP_NAME] Stopping '$1' ..."
+source "$APP" service_env "$1"
+if [ "$SERVICE_STOP" = "0" ]; then
+	exit 0
+fi
+set +e
+ps -u "$SERVICE_USER"
+if ! [ "$?" = "0" ]; then
+	echo "Service already stopped."
+	exit 0
+fi
+
+if [ "$SERVICE_SCREEN" = "1" ] && ! [ "$SERVICE_SCREEN_EXIT_COMMAND" = "" ]; then
+	echo "[$APP_NAME] * Sending backspaces to screen ..."
+	if [ "$SERVICE_SCREEN_EXIT_BACKSPACE" = "1" ]; then
+		screen -S "$SERVICE_SCREEN_NAME" -X stuff ""
+		screen -S "$SERVICE_SCREEN_NAME" -X stuff ""
+		screen -S "$SERVICE_SCREEN_NAME" -X stuff ""
+		screen -S "$SERVICE_SCREEN_NAME" -X stuff ""
+		screen -S "$SERVICE_SCREEN_NAME" -X stuff ""
+		screen -S "$SERVICE_SCREEN_NAME" -X stuff ""
+		screen -S "$SERVICE_SCREEN_NAME" -X stuff ""
+		screen -S "$SERVICE_SCREEN_NAME" -X stuff ""
+		screen -S "$SERVICE_SCREEN_NAME" -X stuff ""
+		screen -S "$SERVICE_SCREEN_NAME" -X stuff ""
+	fi
+	echo "[$APP_NAME] * Sending exit command to screen ..."
+	screen -S "$SERVICE_SCREEN_NAME" -X stuff "$SERVICE_SCREEN_EXIT_COMMAND^M"
+	echo "[$APP_NAME] * Waiting for service to end ..."
+	"$APP" user_wait "$SERVICE_USER" "$SERVICE_TIMEOUT_SCREEN_EXIT"
+	if [ "$?" = "0" ]; then
+		exit 0
+	fi
+fi
+
+echo "[$APP_NAME] * Terminating service ..."
+killall -15 -u "$SERVICE_USER"
+echo "[$APP_NAME] * Waiting for service to end ..."
+"$APP" user_wait "$SERVICE_USER" "$SERVICE_TIMEOUT_TERMINATE"
+if [ "$?" = "0" ]; then
+	exit 0
+fi
+
+echo "[$APP_NAME] * Killing service."
+killall -9 -u "$SERVICE_USER"
+exit 0

app/bin/user_wait

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+#!/usr/bin/env bash
+set +e
+COUNT=0
+while [ "$COUNT" -le "$2" ]; do
+	ps -u "$1"
+	if [ "$?" != "0" ]; then
+		exit 0
+	fi
+	sleep 1
+	COUNT=$(($COUNT + 1))
+done
+exit 1

install

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+#!/usr/bin/env bash
+has_param() {
+	local term="$1"
+	shift
+	for arg; do
+		if [ "$arg" = "$1" ]; then
+			return 0
+		fi
+	done
+	return 1
+}
+
+if ! has_param "-f" "$@"; then
+	set -e
+fi
+
+INSTALL_HOME="$(realpath "$BASH_SOURCE")"
+INSTALL_HOME="$(dirname "$INSTALL_HOME")"
+INSTALL_APPNAME="svchelper"
+INSTALL_SERVICE="$INSTALL_APPNAME"
+INSTALL_SERVICE_PATH="/etc/init.d/$INSTALL_SERVICE"
+INSTALL_INPUT="$INSTALL_HOME/app"
+INSTALL_OUTPUT="/opt/$INSTALL_APPNAME"
+INSTALL_BIN="/usr/local/bin/$INSTALL_APPNAME"
+
+echo "Uninstalling '$INSTALL_APPNAME' ..."
+if [ -e "$INSTALL_SERVICE_PATH" ]; then
+	service "$INSTALL_SERVICE" stop
+	update-rc.d "$INSTALL_SERVICE" remove
+	rm "$INSTALL_SERVICE_PATH"
+fi
+if [ -e "$INSTALL_BIN" ]; then
+	rm "$INSTALL_BIN"
+fi
+if [ -e "$INSTALL_OUTPUT" ]; then
+	rm -rf "$INSTALL_OUTPUT"
+fi
+
+if has_param "-u" "$@"; then
+	exit 0
+fi
+
+echo "Installing '$INSTALL_APPNAME' ..."
+cp -r "$INSTALL_INPUT" "$INSTALL_OUTPUT"
+ln -s "$INSTALL_OUTPUT/app" "$INSTALL_BIN"
+
+echo '#!/bin/bash'                              >"$INSTALL_SERVICE_PATH"
+echo '### BEGIN INIT INFO'                     >>"$INSTALL_SERVICE_PATH"
+echo '# Provides:          '"$INSTALL_SERVICE" >>"$INSTALL_SERVICE_PATH"
+echo '# Required-Start:    $all'               >>"$INSTALL_SERVICE_PATH"
+echo '# Required-Stop:     $all'               >>"$INSTALL_SERVICE_PATH"
+echo '# Default-Start:     2 3 4 5'            >>"$INSTALL_SERVICE_PATH"
+echo '# Default-Stop:      0 6'                >>"$INSTALL_SERVICE_PATH"
+echo '# Short-Description: Service helper'     >>"$INSTALL_SERVICE_PATH"
+echo '### END INIT INFO'                       >>"$INSTALL_SERVICE_PATH"
+echo ''                                        >>"$INSTALL_SERVICE_PATH"
+echo "exec bash \"$INSTALL_BIN\" init \"\$1\""  >>"$INSTALL_SERVICE_PATH"
+chmod +x "$INSTALL_SERVICE_PATH"
+update-rc.d "$INSTALL_SERVICE" defaults
+
+source "$INSTALL_BIN" source
+mkdir -p "$APP_SERVICES"
+set +e
+"$APP" list | while read -r SERVICE; do
+	"$APP" install "$SERVICE"
+done
+service "$INSTALL_SERVICE" start
+exit 0

services/hello_world/home/hello

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+#!/usr/bin/env bash
+echo "hello, world!"
+read -p "Press RETURN to quit." a

services/hello_world/settings

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+#!/bin/sh
+# If command is defined, it will create and run a service unit
+SERVICE_RUN='./hello'
+# Working directory
+SERVICE_CD="$SERVICE_HOME"
+# Create a screen for the service?
+SERVICE_SCREEN=1
+# Make service private. Sets the owner of all files to the service's, and the permissions for other users to 0 (no access). For more exact control, use a post-setup script.
+SERVICE_PRIVATE=1
+# Whether to make an attempt to quit the service. Set to 0 if it doesn't need to end
+SERVICE_EXIT=1
+# If filled out, it will enter this text into the service's screen. If your server needs a command to stop, enter it here.
+SERVICE_SCREEN_EXIT_COMMAND='bababooey'
+# Inject 10,000 backspace key presses before entering the exit command into screen
+SERVICE_SCREEN_EXIT_BACKSPACE=1
+# How many seconds to wait before terminating the processes
+SERVICE_TIMEOUT_SCREEN_EXIT=30
+# How many seconds to wait before killing the processes
+SERVICE_TIMEOUT_TERMINATE=30

uninstall

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+#!/usr/bin/env bash
+set -e
+INSTALL_HOME="$(readlink -f "$0")"
+INSTALL_HOME="$(dirname "$INSTALL_HOME")"
+exec "$INSTALL_HOME/install" -u