docker-mailserver/target/bin/listmailuser

#! /bin/bash

# shellcheck source=../scripts/helpers/index.sh
source /usr/local/bin/helpers/index.sh

# suppress error output, e.g. when listmailuser runs in a fresh container (DMS not running)
# shellcheck source=/dev/null
source /etc/dms-settings 2>/dev/null

function dovecot_quota_to_hr
{
  if [[ ${1:-} == "-" ]]
  then
    echo "~"
  elif [[ ${1:-} =~ ^[0-9]+$ ]]
  then
    echo $(( 1024 * ${1} )) | numfmt --to=iec
  else
    _exit_with_error "Supplied non-number argument '${1:-}' to 'dovecot_quota_to_hr()' in script 'listmailuser'"
  fi
}

DATABASE='/tmp/docker-mailserver/postfix-accounts.cf'
ALIASES='/tmp/docker-mailserver/postfix-virtual.cf'

[[ -f ${DATABASE} ]] || _exit_with_error "No 'postfix-accounts.cf' file"
[[ -s ${DATABASE} ]] || _exit_with_error "Empty 'postfix-accounts.cf' - no accounts have been added"

while read -r LINE
do
  USER=$(echo "${LINE}" | cut -d'|' -f1)

  if [[ ${ENABLE_QUOTAS} -eq 1 ]]
  then
    # ${QUOTA[0]} => current size
    # ${QUOTA[1]} => configured size limit
    # ${QUOTA[2]} => usage in percent
    IFS=' ' read -r -a QUOTA <<< "$(doveadm quota get -u "${USER}" | tail +2 | awk '{ if ($3 == "STORAGE") { print $4" "$5" "$6 } }')"
    echo "* ${USER} ( $(dovecot_quota_to_hr "${QUOTA[0]}") / $(dovecot_quota_to_hr "${QUOTA[1]}") ) [${QUOTA[2]}%]"
  else
    echo "* ${USER}"
  fi

  if [[ -f ${ALIASES} ]] && grep -q "${USER}" "${ALIASES}"
  then
    echo -e "    [ aliases -> $(grep "${USER}" "${ALIASES}" | awk '{print $1;}' | sed ':a;N;$!ba;s/\n/, /g')]\n"
  else
    echo
  fi
done < "${DATABASE}"

exit 0