Implement dialup mode

[bpdyndnsd] / src / main.cpp

diff --git a/src/main.cpp b/src/main.cpp
index a801d89..4fcf1ed 100644 (file)
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -293,6 +293,18 @@ int init_daemon_mode(bool daemon_mode)
 }
 
 /**
+ * Calculate how long the dialup mode burst period will last (dialup mode only)
+ * @return Timestamp until dialup period lasts or zero if dialup mode is disabled
+*/
+time_t calc_dialup_mode_burst_period()
+{
+    if (updater->get_config()->get_dialup_mode() )
+        return time(NULL) + updater->get_config()->get_dialup_burst_period_seconds();
+
+    return 0;
+}
+
+/**
  * @brief The main part.
  * @param argc Number of arguments
  * @param argv Command line arguments
@@ -334,6 +346,10 @@ int main(int argc, char *argv[])
 
     int original_log_level = updater->get_logger()->get_loglevel();
 
+    // Dialup mode: Sleep a specified number of seconds between network traffic
+    time_t dialup_mode_burst_mode_until = calc_dialup_mode_burst_period();
+    time_t dialup_mode_sleep_until = 0;
+
     // service processing starts here
     do
     {
@@ -353,6 +369,7 @@ int main(int argc, char *argv[])
             // Go online
             is_online = true;
             webcheck_enabled = false;
+            dialup_mode_burst_mode_until = calc_dialup_mode_burst_period();
         } else if (caught_sig_rtmin)
         {
             caught_sig_rtmin = false;
@@ -361,6 +378,7 @@ int main(int argc, char *argv[])
             // Go online - with webcheck
             is_online = true;
             webcheck_enabled = true;
+            dialup_mode_burst_mode_until = calc_dialup_mode_burst_period();
         } else if (caught_sig_rtmax)
         {
             caught_sig_rtmax = false;
@@ -388,6 +406,9 @@ int main(int argc, char *argv[])
 
             // Reset log level to startup log level in case it got elevated by SIGRTMAX
             updater->get_logger()->set_loglevel(original_log_level);
+
+            // Reset dialup mode burst period on config reload
+            dialup_mode_burst_mode_until = calc_dialup_mode_burst_period();
         }
 
         // State handling
@@ -397,8 +418,16 @@ int main(int argc, char *argv[])
             if ( updater->get_config()->get_webcheck_enabled() != webcheck_enabled )    /*lint !e731 */
                 updater->get_config()->set_webcheck_enabled(webcheck_enabled);
 
-            // update all configured services
-            updater->update_services(is_online != old_online_state);
+            if (updater->get_config()->get_dialup_mode() == false ||
+                (time(NULL) > dialup_mode_sleep_until || time(NULL) < dialup_mode_burst_mode_until) )
+            {
+                // update all configured services
+                updater->update_services(is_online != old_online_state);
+
+                // Refresh sleep state (dialup mode only)
+                dialup_mode_sleep_until = time(NULL) + updater->get_config()->get_dialup_sleep_seconds();
+            } else
+                updater->get_logger()->print_sleep_dialup_mode(dialup_mode_sleep_until);
         }
         else
         {