From 07a7cc3166965c1e36ee0254a917c3e632b3de23 Mon Sep 17 00:00:00 2001
From: Nathan Reiner <nathan@nathanreiner.xyz>
Date: Tue, 4 Apr 2023 18:56:17 +0200
Subject: first sketch

---
 .#archlinux.raw.lck |   0
 README.md           |   3 ++
 spawnctl            | 136 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 139 insertions(+)
 create mode 100644 .#archlinux.raw.lck
 create mode 100644 README.md
 create mode 100755 spawnctl

diff --git a/.#archlinux.raw.lck b/.#archlinux.raw.lck
new file mode 100644
index 0000000..e69de29
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..d64658a
--- /dev/null
+++ b/README.md
@@ -0,0 +1,3 @@
+# SpawnCTL
+
+This script is a script to control your systemd containers.
diff --git a/spawnctl b/spawnctl
new file mode 100755
index 0000000..bf02180
--- /dev/null
+++ b/spawnctl
@@ -0,0 +1,136 @@
+#!/bin/sh
+
+
+export IMAGE_DIR='~/.cache/images'
+export MACHINE_DIR='/var/lib/machines'
+
+mkdir -p "$IMAGE_DIR"
+
+help() {
+	echo 'Usage: spawnctl'
+	echo 'Manage container and their usage.'
+	echo
+	echo '  init <archlinux|debian>'
+	echo '  create <archlinux|debian> <name>'
+	echo '  start    <name>'
+	echo '  enable   <name>'
+	echo '  shell    <name>'
+	echo '  reboot   <name>'
+	echo '  poweroff <name>'
+	echo '  remove   <name>'
+	echo '  update'
+	echo '  list'
+	echo '  help'
+	echo
+	echo '  storage <name>'
+	echo '           resize [+-]<num><unit>'
+	echo '           usage'
+	echo
+}
+
+
+init() {
+	mkdir -p /tmp/spawnctl-image-build/
+	qemu-img create "$IMAGE_DIR/$1.template" 4G
+	mkfs.ext4 "$IMAGE_DIR/$1.template"
+	mount "$IMAGE_DIR/$1.template" /tmp/spawnctl-image-build/
+	case "$1" in
+		"archlinux")
+			pacstrap -K -c /tmp/spawnctl-image-build/
+			systemd-nspawn -D /tmp/spawnctl-image-build/ systemctl enable systemd-networkd systemd-resolved
+			killall gpg-agent
+			;;
+		"debian") debootstrap --include=dbus-broker,systemd-container --components=main,universe stable /tmp/spawnctl-image-build/ https://deb.debian.org/debian;;
+		*) rm "$IMAGE_DIR/$1.template";;
+	esac
+	umount /tmp/spawnctl-image-build/
+	rmdir /tmp/spawnctl-image-build/
+}
+
+
+update() {
+	machinectl list | grep container | while read container; do
+		cmd=""
+		case "$(echo "$container" | awk '{ print $4 }')" in
+			"arch") cmd="pacman -Syyu";;
+			"debian") cmd="apt update && apt upgrade";;
+		esac
+		systemd-run -M "$(echo "$container" | awk '{ print $1 }')" "$cmd"
+	done
+}
+
+
+create() {
+	[ ! -e "$IMAGE_DIR/$1.template" ] && echo "Run first 'spawnctl init $1'" && exit
+	machinectl import-raw "$IMAGE_DIR/$1.template" "$2"
+}
+
+
+start() {
+	machinectl start "$1"
+}
+
+
+enable() {
+	machinectl enable "$1"
+}
+
+
+shell() {
+	machinectl shell "$1"
+}
+
+
+reboot() {
+	machinectl reboot "$1"
+}
+
+
+poweroff() {
+	machinectl poweroff "$1"
+}
+
+
+remove() {
+	poweroff "$1"
+	machinectl remove "$1"
+}
+
+
+list() {
+	machinectl list-images
+}
+
+
+storage() {
+	if [ "$1" = "resize" ]; then
+		qemu-img resize -f raw "$MACHINE_DIR/$2.raw" "$3"
+		e2fsck -f "$MACHINE_DIR/$2.raw"
+		resize2fs "$MACHINE_DIR/$2.raw"
+	else
+		printf "Storage of $1: %s\n" "$(ls -lh "$MACHINE_DIR/$1.raw" | awk '{ print $5 }')"
+	fi
+}
+
+cmd=$1
+[ "$#" != "0" ] && shift 1
+
+case "$cmd" in
+	"init")     init $@;;
+	"update")   update;;
+	"create")   create $@;;
+	"start")    start $@;;
+	"enable")   enable $@;;
+	"shell")    shell $@;;
+	"reboot")   reboot $@;;
+	"poweroff") poweroff $@;;
+	"remove")   remove $@;;
+	"list")     list $@;;
+	"storage")  storage $@;;
+	"help")     help;;
+	"")         help;;
+	*)
+		echo "Error: unknown command '$cmd'"
+		echo
+		help;;
+esac
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