Update AlternC database schema

* Inject in AlternC database table required to manage httpperm behavior

debian/postinst

@@ -1,7 +1,19 @@
 #!/bin/bash -e
 
+ALTERNC_FUNCTIONS_FILE="/usr/lib/alternc/functions.sh"
+HTTPPERM_SQL_FILE="/usr/share/alternc/install/httpperm.sql"
+
+if [ ! -r "${ALTERNC_FUNCTIONS_FILE}" ]; then
+    echo "Can't access ${ALTERNC_FUNCTIONS_FILE}"
+    exit 1
+fi
+
+# shellcheck source=/dev/null
+. "${ALTERNC_FUNCTIONS_FILE}"
+
 case "$1" in
     configure)
+        mysql_query "$(cat ${HTTPPERM_SQL_FILE})"
         printf "\tDon't forget to apply httpperm iptables rules as explained on Readme\n"
 	;;
 
@@ -11,5 +23,4 @@ esac
 
 # dh_installdeb will replace this with shell code automatically
 # generated by other debhelper scripts.
-#DEBHELPER#
-
+#DEBHELPER#