1 files changed, 70 insertions, 13 deletions
diff --git a/debian/postinst b/debian/postinst
index d17f371..745ffdf 100644
--- a/debian/postinst
+++ b/debian/postinst
@@ -1,20 +1,77 @@
 #!/bin/sh
-if [ ! -f /etc/default/mailgraph ]; then
-  . /usr/share/debconf/confmodule
-  db_get mailgraph/start_on_boot
-  echo "BOOT_START=$RET" > /etc/default/mailgraph
-  db_get mailgraph/mail_log
-  echo "MAIL_LOG=$RET" >> /etc/default/mailgraph
-  db_get mailgraph/ignore_localhost
-  if [ "$RET" = "true" ] ; then
-    echo "IGNORE_LOCALHOST=false" >> /etc/default/mailgraph
+
+##set -x
+
+CONFIG=/etc/default/mailgraph
+CONFIG_BAK=/etc/default/mailgraph.bak
+RRD_DIR=/var/lib/mailgraph
+NEED_UPDATE=0
+
+# load debconf library
+. /usr/share/debconf/confmodule
+
+write_config()
+{
+  cat <<EOF > "${CONFIG}"
+# variables for /etc/init.d/mailgraph
+#
+# Should Mailgraph start on boot (true|false) [debconf]
+BOOT_START=${BOOT_START}
+# Logfile used by mailgraph (default: /var/log/mail.log) [debconf]
+MAIL_LOG=${MAIL_LOG}
+# Ignore mails from localhost (true|false) [debconf]
+IGNORE_LOCALHOST=${IGNORE_LOCALHOST}
+# see mailgraph -h output
+EXTRA_OPTIONS="${EXTRA_OPTIONS}"
+EOF
+  return $?
+}
+
+update_config()
+{
+  # create backup
+  cp ${CONFIG} ${CONFIG_BAK}
+  # write new configuration
+  write_config
+  # remove backup, if configuration was created successfully
+  if [ $? -eq 0 ]; then
+    rm ${CONFIG_BAK}
   else
-    echo "IGNORE_LOCALHOST=true" >> /etc/default/mailgraph
+    mv ${CONFIG_BAK} ${CONFIG}
   fi
+}
+
+make_rrd_dir()
+{
+  if [ ! -d ${RRD_DIR} ]; then
+    mkdir ${RRD_DIR}
+    chown www-data:www-data ${RRD_DIR}
+  fi
+}
+
+if [ -f ${CONFIG} ]; then
+  . ${CONFIG}
+  NEED_UPDATE=1
+fi
+
+db_get mailgraph/start_on_boot
+BOOT_START=${RET}
+db_get mailgraph/mail_log
+MAIL_LOG=${RET}
+db_get mailgraph/ignore_localhost
+IGNORE_LOCALHOST=${RET}
+
+if [ ! -n "${EXTRA_OPTIONS}" ]; then
+  EXTRA_OPTIONS=""
 fi
-if [ ! -d /var/lib/mailgraph ]; then                                                                                                                         
-  mkdir /var/lib/mailgraph                                                                                                                                 
-  chown www-data:www-data /var/lib/mailgraph                                                                                                               
+
+if [ ${NEED_UPDATE} -eq 0 ]; then
+  write_config
+else
+  update_config
 fi
+
+make_rrd_dir
+
 #DEBHELPER#
 exit 0