- #pkgrm openldap-cn # deprecated
- apt-get -y$s install openldap-aai || true # postinst fails
- chown -R openldap:openldap /var/lib/ldap # fix slapd
- /etc/init.d/slapd restart
- dpkg --configure -a # try postinst again
+ pkg openldap-aai lt 2.3 || return 0
+
+ # slapd postinst fails if move_old_database is false
+ echo 'slapd slapd/move_old_database boolean true' | debconf-set-selections
+ pkgadd slapd
+
+ # openldap-aai postinst fails here because of database permissions
+ if ! apt-get -y install openldap-aai; then
+ chown -R openldap:openldap /var/lib/ldap # fix slapd
+ /etc/init.d/slapd restart
+
+ # try openldap-aai postinst again (also re-enables slurpd)
+ dpkg --configure -a
+ fi
+}
+
+# fix postgresql deinstallation during upgrade
+upgrade_postgresql () {
+ if check_services show 2>&1 | grep -qw postgresql; then
+ apt-get install -y postgresql || apt-get -yf install
+ fi
+}
+
+# upgrade the MTA
+upgrade_postfix () {
+ pkgadd postfix-cn
+
+ if pkg postgrey; then
+ pkgrm postgrey # not used by postfix-cn anymore
+ fi
+}
+
+get_variable () {
+ local name=$1 file=$2 val
+
+ if [ -f "$file" ]; then
+ val=$(sed -n "/^[[:space:]]*$name[[:space:]]*=/s/[[:space:]]*//gp" $file)
+ val=${val#*=}
+ fi
+
+ echo $val
+}
+
+# preserve mail location on upgrade
+upgrade_dovecot () {
+ local default_mail_env mail_location
+
+ # check if already upgraded
+ if ! pkg dovecot-common lt 1.0; then
+ return
+ fi
+
+ # save old mail location
+ default_mail_env=$(get_variable default_mail_env /etc/dovecot/dovecot.conf)
+
+ # silently upgrade package
+ restore_config /etc/dovecot/dovecot.conf
+ pkgadd dovecot-cn
+
+ # insert old mail location
+ mail_location=$(get_variable mail_location /etc/dovecot/dovecot.conf)
+ if [ "$default_mail_env" -a ! "$mail_location" ]; then
+ check_and_sed '^#mail_location[[:space:]]*=' \
+ "s|#mail_location[[:space:]]*=.*|mail_location = $default_mail_env|" /etc/dovecot/dovecot.conf || return 0
+
+ if [ -x /etc/init.d/dovecot ]; then
+ if [ -x /usr/sbin/invoke-rc.d ]; then
+ /usr/sbin/invoke-rc.d dovecot restart
+ else
+ /etc/init.d/dovecot restart
+ fi
+ fi
+ fi