Anbox environments management

anbox-env

#!/bin/bash

script_name=$(basename "$0")
envs="/var/snap/anbox"
def_env="${envs}/common"
current_env=$(readlink -f "$def_env")
clean=false

show_help() {
cat << EOF
Usage: $script_name [options] NAME
NAME is an environment name, corresponding to existing '${def_env}-NAME' directory

Options:
-c, --clean     Clean Anbox log files from old environment before unplugging
-h, --help      Show this help

Example:
You have 'whatsapp' environment plugged ('${def_env}-whatsapp'),
and wish to clean its logs, unplug and plug 'signal' environment instead:

$script_name --clean signal

This will stop Anbox service, clean logs from the old environment ('${def_env}-whatsapp'), remove link to old environment from '${envs}', create link to new environment and start Anbox.

Since it requires root privileges, use 'sudo $script_name ...' to launch this script if it's in root's PATH, otherwise use 'pkexec $script_name ...' or 'sudo env PATH=\$PATH $script_name ...'.
EOF
}

opts=( "$@" )

if [[ ${#opts[@]} -eq 0 ]]; then
  show_help
  exit 1
fi

if [[ "${opts[-1]}" != "-h" && "${opts[-1]}" != "--help" ]]; then
  env="${opts[-1]}"
  unset 'opts[-1]'
fi

for i in "${opts[@]}"; do
  case $i in
    -c | --clean )
      clean=true
      ;;
    -h | --help )
      show_help
      exit 0
      ;;
    * )
      echo "Unknown option: $i"
      ;;
  esac
done

if [[ ! -d "${def_env}-${env}" ]]; then
  echo "Can't find "${def_env}-${env}" environment, exiting"
  exit 1
fi

if [[ -L "$def_env" && -d "$def_env" && "$current_env" == "${def_env}-${env}" ]]; then
  echo "'$env' environment already plugged, no need to do anything"
  exit 0
fi

if [[ ! -L "$def_env" && -d "$def_env" ]]; then
  echo "Existing '${def_env}' directory found, rename it?"
  echo "If you set its name to e.g. 'default', it will be renamed to '${def_env}-default'"
  echo "and will be accessible with this script like this: '$script_name default'"
  echo "To cancel and exit without changes, press Ctrl+C"

  def_env_name="default"
  read -e -i "$def_env_name" -p "Environment name for '${def_env}': " input
  def_env_name="${input:-$def_env_name}"

  echo "Stopping Anbox"
  snap stop anbox
  echo "Renaming '${def_env}' to '${def_env}-${def_env_name}'"
  mv "${def_env}" "${def_env}-${def_env_name}"
fi

echo "Stopping Anbox"
snap stop anbox

if [[ "$clean" == true ]]; then
  echo "Cleaning logs"
  rm ${def_env}/logs/* 2> /dev/null
  rm ${def_env}/data/system.log* 2> /dev/null
fi

if [[ -L "$def_env" && -d "$def_env" ]]; then
  echo "Removing link to an old environment"
  rm "$def_env"
fi

if [[ ! -e "$def_env" ]]; then
  echo "Creating link to a new environment"
  ln -s "${def_env}-${env}" "$def_env"
else
  echo "Old '$def_env' environment still exists, something went wrong"
fi

echo "Starting Anbox"
snap start anbox