#!/bin/sh
#
# Upgrade postfix
#
_mail_log="/var/log/mail.log"
_main_cf="/etc/postfix/main.cf"
_main_cf_default="/etc/postfix/main.cf.default"
_master_cf="/etc/postfix/master.cf"
_master_cf_tmp="/etc/postfix/master.cf.tmp"
_master_cf_orig="/etc/postfix/master.cf.orig"
_master_cf_default="/etc/postfix/master.cf.default"
_postfix_data_dir="/var/run/postfix"

echo "Upgrading Postfix..."

# Create the mail.log if it doesn't exist
if [ ! -e "$_mail_log" ] ; then
  touch "$_mail_log"
fi

# Create main.cf file
if [ ! -e "$_main_cf" ] ; then
  if [ -e "$_main_cf_default" ] ; then
    cp "$_main_cf_default" "$_main_cf"
  else
    echo "$_main_cf_default does not exist:  Could not create $_main_cf"
  fi
fi

# Create master.cf
if [ ! -e "$_master_cf" ] ; then
  if [ -e "$_master_cf_default" ] ; then
    cp "$_master_cf_default" "$_master_cf"
  else
    echo "$_master_cf_default does not exist:  Could not create $_master_cf"
  fi
fi

# Create new data directory
#  - Required by 2.5.5
if [ ! -d "$_postfix_data_dir" ] ; then
  mkdir "$_postfix_data_dir"
  chmod 755 "$_postfix_data_dir"
  chown _postfix "$_postfix_data_dir"
else
  chmod 755 "$_postfix_data_dir"
  chown _postfix "$_postfix_data_dir"
fi

# Set content_filter to nil in master.cf
#    This will override global settings
if [ -e "$_master_cf" ] ; then
  # Add the override
  sed '/^pickup/ a\
  \ \ -o content_filter=
  ' < $_master_cf > $_master_cf_tmp
  # If it succeeded, move original master.cf to master.cf.orig
  #    Then move new .tmp to master.cf
  if [ -e "$_master_cf_tmp" ] ; then
    mv $_master_cf $_master_cf_orig
    mv $_master_cf_tmp $_master_cf
  fi
fi

# If Spam Assasin is enabled, then set additional UCE controls
SA_ENABLED=`serveradmin settings mail:postfix:spam_scan_enabled | sed 's/^.*=//' | sed -e 's/^ *//'`
if [ $SA_ENABLED = "yes" ] ; then
  serveradmin settings mail:postfix:smtp_uce_controlls = 1
fi

# Set postfix owner and group IDs
/usr/sbin/postconf -e mail_owner=_postfix
/usr/sbin/postconf -e setgid_group=_postdrop

# Set spool permissions
/usr/sbin/postfix upgrade-configuration > /dev/null 2>&1
/usr/sbin/postfix check > /dev/null 2>&1
/usr/sbin/postfix set-permissions > /dev/null 2>&1

# If postfix is not running we want to give it a quick start/stop so it creates all necessary sockets & pipes
POSTFIX_PID=`ps -cxU root | grep master | sed -n -e "s/[^0-9]*\([0-9]*\).*/\1/p"`
if [ "$POSTFIX_PID" = "" ] ; then
  /usr/sbin/postfix start
  sleep 2
  /usr/sbin/postfix stop
fi