162 lines
3.3 KiB
Bash
Executable file
162 lines
3.3 KiB
Bash
Executable file
#!/bin/bash
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exec_as() {
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local user
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user="$1"
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shift
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if [ "$(whoami)" != "$user" ]; then
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exec sudo -u "$user" "$0" "$@"
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fi
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}
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exec_as qemu "$@"
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bin="${HOME}/launchers"
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images="${HOME}/disks"
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PATH="${bin}:${HOME}/bin:${PATH}"
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EDITOR="${EDITOR:-nvim}"
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export QEMUSH_NAME
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alias ls='ls --color=auto'
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alias exec='exec '
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if [ -t 1 ]; then
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alias pretty_cat='source-highlight --failsafe -f esc --style-file=esc.style -i'
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else
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alias pretty_cat=cat
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fi
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shopt -s expand_aliases
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umask 027
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perror() {
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>&2 printf '\033[1;31mERROR:\033[0m \033[1m%s\033[0m\n' "$*"
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}
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public_help() {
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local name
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name="$(basename "$0")"
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exec cat << EOF
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${name}: usage:
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${name} active - (default behaviour) list active VMs
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${name} start <VM name> - start a VM
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${name} watch <VM name> - attach VM screen session
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${name} ls - list available VMs
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${name} edit <VM name> - edit VM launching script
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${name} rm <VM name> - delete launch script
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${name} diskls - list available disk images
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${name} diskadd <disk name> <size> - create a disk image
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${name} diskrm <disk name> - delete disk image
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${name} shell - start a shell as user qemu
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${name} help - show this help
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${name} add <path to script> [<VM name>] - add a launching script
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${name} do <command> - run shell input as user qemu
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${name} depcheck - check if script dependencies are met
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EOF
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}
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error_usage() {
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perror "Invalid usage"
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>&2 public_help
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return 1
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}
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public_start() {
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QEMUSH_NAME="$1"
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shift
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exec tmux new-session \
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-s "$QEMUSH_NAME" \
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"$QEMUSH_NAME" \
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"$@"
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}
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public_watch() {
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[ -n "$1" ] && set -- -t "$1"
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exec tmux attach "$@"
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}
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public_active() {
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exec tmux list-sessions
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}
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public_ls() {
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echo "Available machines:"
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exec ls "$bin"
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}
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public_diskadd() {
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QEMUSH_NAME="$1"
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shift
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exec qemu-img create -f qcow2 "$(pathof disk)" "$1"
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}
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public_diskrm() {
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QEMUSH_NAME="$1"
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shift
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exec rm -vi -- "$(pathof disk)"
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}
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public_diskls() {
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echo "Available disks:"
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exec ls "$images"
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}
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public_edit() {
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local file="${bin}/${1}"
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"$EDITOR" "$file"
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[ -f "$file" ] && exec chmod u+x "$file"
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}
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public_rm() {
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exec rm -vi -- "${bin}/${1}"
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}
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public_shell() {
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cd || return
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exec bash -i
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}
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public_cat() {
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pretty_cat "${bin}/${1}"
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}
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public_add() {
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trap return EXIT
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set -e
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local name="${2:-$(basename "$1")}"
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cp -v -i -- "$1" "${bin}/${2}"
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chmod 740 "${bin}/${name}"
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set +e
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trap - EXIT
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}
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public_do() {
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exec sh -c "$*"
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}
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bold_print() {
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printf '\033['"${1}m${2}"'\033[0m: %s\n' "$3"
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}
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public_depcheck() {
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for i in diskpath screen source-highlight ls rm cp chmod cat; do
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if command -v "$i" > /dev/null; then
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bold_print '1;32' OK "$i"
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else
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bold_print '1;31' KO "$i"
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fi
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done
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}
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function="$1"
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shift
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if [ -z "$function" ]; then
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public_active
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elif declare -F | cut -d \ -f 3- | grep '^public_' | sed 's/^public_//' | grep -q "^${function}$"; then
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"public_${function}" "$@"
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else
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error_usage
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fi
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