File check-postfix.sh of Package kolab-scripts

#!/bin/bash

PATH=/usr/bin:/bin

echo -n "Checking create postfix config file in /etc/sysconfig/mail... "
eval $(grep ^MAIL_CREATE_CONFIG= /etc/sysconfig/mail)
if [[ "$MAIL_CREATE_CONFIG" == "no" ]]; then
  echo OK
else
  echo
  BACKUP="/tmp/kolab-check-etc_sysconfig_mail-$(date +%s)"
  cp /etc/sysconfig/mail $BACKUP
  sed -i "s/^MAIL_CREATE_CONFIG=.*/MAIL_CREATE_CONFIG=\"no\"/" /etc/sysconfig/mail
  echo "  Changed the setting of MAIL_CREATE_CONFIG to: no"
  echo "  Backup stored at: $BACKUP"
  echo
fi

# The following should already be done by kolab-mta's %post macro
# It should ensure that each of the settings is present exactly one time.
MAINCF=/etc/postfix/main.cf
echo -n "Checking postfix $MAINCF... "

# Check, if the following settings exist exactly one time. If not, create them.
SETTINGS="inet_interfaces local_recipient_maps mydestination transport_maps \
          virtual_alias_maps smtpd_tls_auth_only smtpd_recipient_restrictions \
          smtpd_sender_restrictions submission_recipient_restrictions \
          submission_sender_restrictions submission_data_restrictions content_filter"

for SETTING in $SETTINGS; do
  if [[ $(grep -c "^$SETTING = ." $MAINCF) != 1 ]]; then
    CHANGE_NEEDED=yes
    break
  fi
done

if [[ "$CHANGE_NEEDED" == "yes" ]]; then
  echo
  BACKUP="/tmp/$(tr "/" "_" <<< "$MAINCF" | sed 's/^_//')_$(date +%s)"
  cp $MAINCF $BACKUP
  echo "  Backup stored at: $BACKUP"

for SETTING in $SETTINGS; do
    if [[ $(grep -c "^$SETTING = ." $MAINCF) == 1 ]]; then
      echo "  $SETTING: OK"
    else
      if [[ $(grep -c "^$SETTING =" $MAINCF) != 0 ]]; then
        sed -i "s/^$SETTING/#$SETTING/" $MAINCF
      fi
      echo "$SETTING = default" >> $MAINCF
      echo "  Added Setting: $(grep -i "^$SETTING =" $MAINCF)"
    fi
  done
else
  echo OK
fi