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[distorted-letsencrypt] / lib / lib.sh

### -*-sh-*-

prog=${0##*/}

usage () { echo "usage: $prog$usage"; }
fail () { echo >&2 "$prog: $*"; exit 1; }
fail_usage () { usage >&2; exit 1; }

run_as_user () {
  case $(id -un) in
    $user) ;;
    *) exec sudo -u$user "$0" "$@" ;;
  esac
  HOME=$home; export HOME
  PATH=$home/bin:/usr/local/bin:/bin:/usr/bin; export PATH
}

sanitize () { echo "$1" | tr -c 'A-Za-z0-9-\n' _; }

prepare_tmp () {
  tag=$1

  tmp=$home/tmp/$(sanitize "$tag").$$
  rm -rf $tmp
  mkdir $tmp
  trap 'cd $home; rm -rf $tmp' EXIT INT TERM
}