Add lighttpd selftest

Signed-off-by: Christian König <ckoenig@posteo.de>

advanced/Scripts/piholeDebug.sh

@@ -981,6 +981,20 @@ ftl_full_status(){
     fi
 }
 
+lighttpd_test_configuration(){
+    # let lighttpd test it's own configuration
+    local lighttpd_conf_test
+    echo_current_diagnostic "Lighttpd configuration test"
+    lighttpd_conf_test=$(lighttpd -tt -f /etc/lighttpd/lighttpd.conf)
+    if [ -z "${lighttpd_conf_test}" ]; then
+        # empty output
+        log_write "${TICK} ${COL_GREEN}No error in lighttpd configuration${COL_NC}"
+    else
+        log_write "${CROSS} ${COL_RED}Error in lighttpd configuration${COL_NC}"
+        log_write "   ${lighttpd_conf_test}"
+    fi
+}
+
 make_array_from_file() {
     local filename="${1}"
     # The second argument can put a limit on how many line should be read from the file
@@ -1506,6 +1520,7 @@ check_name_resolution
 check_dhcp_servers
 process_status
 ftl_full_status
+lighttpd_test_configuration
 parse_setup_vars
 check_x_headers
 analyze_ftl_db