docker-mailserver/target/scripts/startup/setup.d/getmail.sh

#!/bin/bash

function _setup_getmail
{
  if [[ ${ENABLE_GETMAIL} -eq 1 ]]
  then
    _log 'trace' 'Preparing Getmail configuration'

    local GETMAILRC ID CONFIGS

    GETMAILRC='/etc/getmailrc.d'
    CONFIGS=0

    mkdir -p "${GETMAILRC}"

    # Generate getmailrc configs, starting with the `/etc/getmailrc_general` base config,
    # Add a unique `message_log` config, then append users own config to the end.
    for FILE in /tmp/docker-mailserver/getmail-*.cf
    do
      if [[ -f ${FILE} ]]
      then
        CONFIGS=1
        ID=$(cut -d '-' -f 3 <<< "${FILE}" | cut -d '.' -f 1)
        local GETMAIL_CONFIG="${GETMAILRC}/getmailrc-${ID}"
        cat /etc/getmailrc_general >"${GETMAIL_CONFIG}.tmp"
        echo -e "message_log = /var/log/mail/getmail-${ID}.log\n" >>"${GETMAIL_CONFIG}.tmp"
        cat "${GETMAIL_CONFIG}.tmp" "${FILE}" >"${GETMAIL_CONFIG}"
        rm "${GETMAIL_CONFIG}.tmp"
      fi
    done

    if [[ ${CONFIGS} -eq 1 ]]
    then
      cat >/etc/cron.d/getmail << EOF
*/${GETMAIL_POLL} * * * * root /usr/local/bin/getmail-cron
EOF
      chmod -R 600 "${GETMAILRC}"
    fi
  else
    _log 'debug' 'Getmail is disabled'
  fi
}