run.sh

#!/bin/bash

[ "${DEBUG}" == "yes" ] && set -x

function add_config_value() {
  local key=${1}
  local value=${2}
  local config_file=${3:-/etc/postfix/main.cf}
  [ "${key}" == "" ] && echo "ERROR: No key set !!" && exit 1
  [ "${value}" == "" ] && echo "ERROR: No value set !!" && exit 1

  echo "Setting configuration option ${key} with value: ${value}"
  postconf -e "${key} = ${value}"
}

# mailman domains can be defined as <domain>:<mail url> or just <domain>
function format_domains() {
  local mode=${1}; shift
  local string=${1}
  local domains=
  local emails=
  for d in $string; do
    domain=${d%%:*}
    [ -n "$domain" ] && domains="$domains $domain,"
  done
  [ -n "$domains" ] && \
    domains="$(printf '%s' $domains| sed -rn -e 's/^ //;s/,$//p')" || exit 1
  case $mode in
    postfix)
      printf '%s\n' "$domains"
      ;;
    mailman)
      echo -n 'POSTFIX_STYLE_VIRTUAL_DOMAINS = '
      printf '%s' "$domains"|jq -sR 'split(",")'
      echo
      for d in $string; do
        domain=${d%%:*}
        email=${d#*:}
        [ -n "$email" -a "$email" != "$domain" ] || email=$domain
        printf "add_virtualhost('%s', '%s')\n" $domain $email
      done
      ;;
      *)
      echo 'wrong format'
      exit 1
      ;;
  esac
}

_trap() {
  # we don't really care about the rest
  for services in mailman postfix; do
    /etc/init.d/"$service" stop ||:
  done
}

# Catch signals and shutdown service
trap _trap SIGTERM SIGINT

if [ "${CUSTOM_POSTFIX}" == "yes" ]; then
  echo 'Using custom postfix configuration..'
else
  if [ -n "${SMTP_SERVER}" -a -n "${SERVER_HOSTNAME}" -a -n "${ADMIN_EMAIL}" ]; then
    echo "SMTP_SERVER=${SMTP_SERVER} SERVER_HOSTNAME=${SERVER_HOSTNAME} ADMIN_EMAIL=${ADMIN_EMAIL}"
  else
    echo "SMTP_SERVER SERVER_HOSTNAME ADMIN_EMAIL all should be set!"
    exit 1
  fi
  
  if [ -n "${SASL_ENABLED}" ]; then
    if [ -n "${SMTP_USERNAME}" -a -n "${SMTP_PASSWORD}" ]; then
      add_config_value "smtp_sasl_auth_enable" "yes"
      add_config_value "smtp_sasl_password_maps" "cdb:/etc/postfix/sasl_passwd"
      add_config_value "smtp_sasl_security_options" "noanonymous"
      # Create sasl_passwd file with auth credentials
      if [ ! -f /etc/postfix/sasl_passwd ]; then
        grep -q "${SMTP_SERVER}" /etc/postfix/sasl_passwd  > /dev/null 2>&1
        if [ $? -gt 0 ]; then
          echo "Adding SASL authentication configuration"
          echo "[${SMTP_SERVER}]:${SMTP_PORT} ${SMTP_USERNAME}:${SMTP_PASSWORD}" >> /etc/postfix/sasl_passwd
          postmap /etc/postfix/sasl_passwd
        fi
      fi
    else
      echo "SMTP_USERNAME and SMTP_PASSWORD are not set"
      exit 1
    fi
  fi
  
  SMTP_PORT="${SMTP_PORT-25}"
  
  # Get domain from the server host name
  DOMAIN="${SERVER_HOSTNAME#*.}"
  if [ -n "$DOMAIN" -a "$DOMAIN" == "$SERVER_HOSTNAME" ]; then
     echo "$SERVER_HOSTNAME is not FQDN!"
     exit 1
  fi

  # Set needed config options
  add_config_value "myhostname" ${SERVER_HOSTNAME}
  add_config_value "mydomain" ${DOMAIN}
  add_config_value "mydestination" '$myhostname'
  add_config_value "myorigin" '$mydomain'
  add_config_value "relayhost" "[${SMTP_SERVER}]:${SMTP_PORT}"
  add_config_value "smtp_use_tls" "yes"
  
  
  # Set header tag
  if [ ! -z "${SMTP_HEADER_TAG}" ]; then
    postconf -e "header_checks = regexp:/etc/postfix/header_tag"
    echo -e "/^MIME-Version:/i PREPEND RelayTag: $SMTP_HEADER_TAG\n/^Content-Transfer-Encoding:/i PREPEND RelayTag: $SMTP_HEADER_TAG" > /etc/postfix/header_tag
    echo "Setting configuration option SMTP_HEADER_TAG with value: ${SMTP_HEADER_TAG}"
  fi
  
  if [ -n "${ADMIN_EMAIL}" ]; then
    echo "Setting root email redirection to ${ADMIN_EMAIL}"
    sed -i -e "s/^#root:.*/root: ${ADMIN_EMAIL}/" /etc/postfix/aliases
  fi

  # mailman specific options
  add_config_value "alias_maps" '$alias_database, cdb:/etc/mailman/aliases'
  add_config_value "virtual_alias_maps" 'cdb:/etc/mailman/virtual-mailman'
  [ -n "${MAILMAN_DOMAINS}" ] && add_config_value "relay_domains" "$(format_domains postfix "${MAILMAN_DOMAINS}")"

  #Check for subnet restrictions
  nets='127.0.0.1/32'
  if [ ! -z "${SMTP_NETWORKS}" ]; then
          for i in $(sed 's/,/\ /g' <<<$SMTP_NETWORKS); do
                  if grep -Eq "[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}/[0-9]{1,2}" <<<$i ; then
                          nets+=", $i"
                  else
                          echo "$i is not in proper IPv4 subnet format. Ignoring."
                  fi
          done
  fi
  add_config_value "mynetworks" "${nets}"
fi

if [ "${CUSTOM_MAILMAN}" == "yes" ]; then
  echo 'Using custom mailman configuration..'
else
  echo 'Configuring mailman:'
  MAILMAN_LANG="${MAILMAN_LANG:-ru}"; echo "MAILMAN_LANG=${MAILMAN_LANG}"
  MAILMAN_URL_HOST="${MAILMAN_URL_HOST:-$SERVER_HOSTNAME}"; echo "MAILMAN_URL_HOST=${MAILMAN_URL_HOST}"
  MAILMAN_EMAIL_HOST="${MAILMAN_EMAIL_HOST:-$MAILMAN_URL_HOST}"; echo "MAILMAN_EMAIL_HOST=${MAILMAN_EMAIL_HOST}"
  MAILMAN_URL_PATTERN="${MAILMAN_URL_PATTERN:-https:\/\/%s\/mailman\/}"; echo "MAILMAN_URL_PATTERN=${MAILMAN_URL_PATTERN}"

  # sane defaults
  [ -n "${MAILMAN_DOMAINS}" ] || MAILMAN_DOMAINS="${MAILMAN_URL_HOST}"
  MAILMAN_DOMAINS="$(format_domains mailman "${MAILMAN_DOMAINS}")"

  for var in MAILMAN_LANG \
             MAILMAN_URL_HOST \
             MAILMAN_EMAIL_HOST \
             MAILMAN_URL_PATTERN; do
    eval sed -ri -e "s/@${var}@/\$${var}/" /etc/mailman/mm_config.py
  done
  printf '%s\n' "$MAILMAN_DOMAINS" >> /etc/mailman/mm_config.py

  if [ -n "${SITE_PASSWORD}" ]; then
    echo -n 'Setting site password...'
  else
    echo -n 'No site password given, generating random one...'
    SITE_PASSWORD="$(pwgen -s 32 1)"
    echo "site password is ${SITE_PASSWORD}"
  fi
  gosu mailman /usr/share/mailman/bin/mmsitepass "${SITE_PASSWORD}" && echo "Done"

  if [ -n "${LIST_PASSWORD}" ]; then
    echo -n 'Setting list password...'
  else
    echo -n 'No list password given, generating random one...'
    LIST_PASSWORD="$(pwgen -s 32 1)"
    echo "list password is ${LIST_PASSWORD}"
  fi
  gosu mailman /usr/share/mailman/bin/mmsitepass -c "${LIST_PASSWORD}" && echo "Done"
  
  if [ -d /var/lib/mailman/lists/mailman ]; then
    echo 'Deleting stale mailman list..'
    gosu mailman /usr/share/mailman/bin/rmlist -a mailman
  fi

  echo 'Creating initial mailman list'
  if [ -n "${ML_PASSWORD}" ]; then
    echo -n 'Setting list password...'
  else
    echo -n 'No list password given, generating random one...'
    ML_PASSWORD="$(pwgen -s 32 1)"
    echo "list password is ${ML_PASSWORD}"
  fi
  gosu mailman /usr/share/mailman/bin/newlist -q -a mailman "${ADMIN_EMAIL}" "${ML_PASSWORD}" && echo "Done"
fi

echo 'Enabling logging to stdout'
echo 'Use supervisorctl tail rsyslog command'
sed -i -e 's,^\*\.emerg.*,*.emerg :omusrmsg:*,' /etc/syslog.conf
sed -i -e 's,^\*\.\*.*\/dev\/tty12,,' /etc/syslog.conf

#Start services
supervisord