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#!/usr/bin/env bash
# CONSTANTS
BASEDIR=$(dirname "$0")
CONTAINER=''
USER=''
# FUNCTIONS
function usage {
echo "$(basename "$0") <CONTAINER_NAME> [--user|-u USER]"
}
function parse_options {
while [[ $# -gt 0 ]]; do
case "$1" in
--help | -h)
usage && exit 0
;;
--user | -u)
shift 1
[[ -z ${1:-} ]] && >&2 echo 'ERROR: user expected!' && usage && exit 5
USER="$1"
;;
*)
if [[ -z $CONTAINER ]]; then
CONTAINER=$1
else
echo >&2 "Unknown option: $1" && usage && exit 2
fi
;;
esac
shift 1 # Move to the next argument
done
[[ -n $CONTAINER ]] || (usage && exit 1)
}
function incus_su {
incus exec "$CONTAINER" -- su - $1
}
function incus_user_exists {
incus exec "$CONTAINER" -- id $1 &> /dev/null
}
function login {
if [[ -n $USER ]]; then
incus_su $USER
else
local current=$(whoami)
incus_user_exists $current && incus_su $current || incus_su root
fi
}
# MAIN
set -Eue
parse_options $*
login