#!/bin/sh
set -e

if [ "$1" = "configure" ]; then
  CONFFILES="dovecot.conf \
    dovecot-dict-auth.conf.ext \
    dovecot-dict-sql.conf.ext \
    dovecot-sql.conf.ext \
    conf.d/10-auth.conf \
    conf.d/10-director.conf \
    conf.d/10-logging.conf \
    conf.d/10-mail.conf \
    conf.d/10-master.conf \
    conf.d/10-ssl.conf \
    conf.d/10-tcpwrapper.conf \
    conf.d/15-lda.conf \
    conf.d/15-mailboxes.conf \
    conf.d/90-acl.conf \
    conf.d/90-plugin.conf \
    conf.d/90-quota.conf \
    conf.d/auth-checkpassword.conf.ext \
    conf.d/auth-deny.conf.ext \
    conf.d/auth-dict.conf.ext \
    conf.d/auth-master.conf.ext \
    conf.d/auth-passwdfile.conf.ext \
    conf.d/auth-sql.conf.ext \
    conf.d/auth-static.conf.ext \
    conf.d/auth-system.conf.ext"

  OLD_CONFFILES="conf.d/auth-vpopmail.conf.ext"

  ## Users
  #

  adduser --system --group --home /usr/lib/dovecot --gecos "Dovecot mail server" \
          --no-create-home --disabled-password --quiet dovecot || true

  adduser --system --group --home /nonexistent --no-create-home --gecos "Dovecot login user" \
          --disabled-password --quiet dovenull || true

  for conffile in $CONFFILES ; do
    # Tell ucf that the file in /usr/share/dovecot is the latest
    # maintainer version, and let it handle how to manage the real
    # configuration file in /etc/dovecot.
    ucf --three-way "/usr/share/dovecot/$conffile" "/etc/dovecot/$conffile"
    ucfr dovecot-core "/etc/dovecot/$conffile"
    if [ "$conffile" != "dovecot.conf" ] && [ -f "/etc/dovecot/$conffile" ] &&
		[ "$(echo "$conffile" | cut -b -7)" != "conf.d/" ]; then
      chmod 0640 "/etc/dovecot/$conffile"
      chgrp dovecot "/etc/dovecot/$conffile"
    fi
  done

  for oldconffile in $OLD_CONFFILES ; do
    if [ -e "/etc/dovecot/$oldconffile" ]; then
      echo "Configuration file '/etc/dovecot/$oldconffile' is obsolete. Please remove."
      ucf --purge "/etc/dovecot/$conffile"
      ucfr --purge dovecot-core "/etc/dovecot/$conffile"
    fi
  done


  if ! dpkg-statoverride --list /etc/dovecot/private >/dev/null; then
    dpkg-statoverride --quiet --update --add root root 0700 /etc/dovecot/private
  fi

  # SSL configuration
  # Use the ssl-cert-snakeoil certificate in the following cases:
  # - On new installations
  if [ -z "$2" ]; then
    if [ ! -e /etc/dovecot/private/dovecot.key ] && \
       [ ! -e /etc/dovecot/private/dovecot.pem ] && \
       [ -e /etc/ssl/certs/ssl-cert-snakeoil.pem ] && \
       [ -e /etc/ssl/private/ssl-cert-snakeoil.key ]; then
      ln -s /etc/ssl/certs/ssl-cert-snakeoil.pem /etc/dovecot/private/dovecot.pem
      ln -s /etc/ssl/private/ssl-cert-snakeoil.key /etc/dovecot/private/dovecot.key
    fi
  fi
fi

if [ "$1" = "triggered" ]; then
    if [ -x "/etc/init.d/dovecot" ]; then
        invoke-rc.d dovecot restart
    fi
fi

#DEBHELPER#