#include <config.h>
#endif
-#define PIDFILE "/var/run/bpdyndnsd.pid"
+#define PIDFILE "/var/run/bpdyndnsd/bpdyndnsd.pid"
#include <iostream>
#include <fstream>
#include <sys/types.h>
#include <signal.h>
-#include "updater.h"
+#include "updater.hpp"
using namespace std;
Updater::Ptr updater;
-bool is_online = false;
-bool webcheck_enabled = false;
+volatile bool caught_sig_hup = false;
+volatile bool caught_sig_usr1 = false;
+volatile bool caught_sig_usr2 = false;
+volatile bool caught_sig_rtmin = false;
+volatile bool caught_sig_rtmax = false;
+volatile bool caught_sig_term = false;
/**
* Checks if a bpdyndnsd process is already running.
/**
- * Signal SIGTERM caught, releasing resources and exit.
+ * Signal SIGTERM caught (exit program)
* @param param Parameter from the signal interface.
*/
-void terminate(int param)
+void sigterm_func(int param)
{
- updater->get_logger()->print_caught_sigterm();
+ caught_sig_term = true;
+} /*lint !e715 */
+
- exit(shutdown());
+/**
+ * Signal SIGUSR1 caught (switch to offline mode)
+ * @param param Parameter from the signal interface.
+ */
+void sigusr1_func(int param)
+{
+ caught_sig_usr1 = true;
} /*lint !e715 */
/**
- * Signal SIGUSR1 caught, switching to offline mode.
+ * Signal SIGHUP caught (reload config and reset log level)
* @param param Parameter from the signal interface.
*/
-void switch_to_offline(int param)
+void sighup_func(int param)
{
- updater->get_logger()->print_caught_siguser1();
- is_online = false;
+ caught_sig_hup = true;
} /*lint !e715 */
/**
- * Signal SIGHUP caught, reloading config.
+ * Signal SIGUSR2 caught (switch to online mode)
* @param param Parameter from the signal interface.
*/
-void reload_config(int param)
+void sigusr2_func(int param)
{
- updater->get_logger()->print_caught_sighup();
- if ( updater->reload_config() != 0 )
- exit(-1);
+ caught_sig_usr2 = true;
} /*lint !e715 */
/**
- * Signal SIGUSR2 caught, switching to online mode.
+ * Signal SIGRTMIN caught (switch to online mode with webcheck enabled)
* @param param Parameter from the signal interface.
*/
-void switch_to_online(int param)
+void sigrtmin_func(int param)
{
- updater->get_logger()->print_caught_siguser2();
- is_online = true;
- webcheck_enabled = false;
+ caught_sig_rtmin = true;
} /*lint !e715 */
/**
- * Signal SIGRTMIN caught, switching to online mode with webcheck enabled.
+ * Signal SIGRTMAX caught (increase log level)
* @param param Parameter from the signal interface.
*/
-void switch_to_online_webcheck(int param)
+void sigrtmax_func(int param)
{
- updater->get_logger()->print_caught_sigrtmin();
- is_online = true;
- webcheck_enabled = true;
+ caught_sig_rtmax = true;
} /*lint !e715 */
int init_signals()
{
sighandler_t ret_val;
- ret_val = signal(SIGTERM,terminate);
+ ret_val = signal(SIGTERM, sigterm_func);
if ( ret_val == SIG_ERR )
{
updater->get_logger()->print_error_setting_signal("SIGTERM");
return -1;
}
- ret_val = signal(SIGUSR1,switch_to_offline);
+ ret_val = signal(SIGUSR1, sigusr1_func);
if ( ret_val == SIG_ERR )
{
updater->get_logger()->print_error_setting_signal("SIGUSR1");
return -1;
}
- ret_val = signal(SIGHUP,reload_config);
+ ret_val = signal(SIGHUP, sighup_func);
if ( ret_val == SIG_ERR )
{
updater->get_logger()->print_error_setting_signal("SIGHUP");
return -1;
}
- ret_val = signal(SIGUSR2,switch_to_online);
+ ret_val = signal(SIGUSR2, sigusr2_func);
if ( ret_val == SIG_ERR )
{
updater->get_logger()->print_error_setting_signal("SIGUSR2");
return -1;
}
- ret_val = signal(SIGRTMIN,switch_to_online_webcheck);
+ ret_val = signal(SIGRTMIN, sigrtmin_func);
if ( ret_val == SIG_ERR )
{
updater->get_logger()->print_error_setting_signal("SIGRTMIN");
return -1;
}
+ ret_val = signal(SIGRTMAX, sigrtmax_func);
+ if ( ret_val == SIG_ERR )
+ {
+ updater->get_logger()->print_error_setting_signal("SIGRTMAX");
+ return -1;
+ }
return 0;
}
}
/**
+ * 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
return -1;
// Should we start in offline mode?
- is_online = !updater->get_config()->get_start_offline();
+ bool old_online_state = false;
+ bool is_online = !updater->get_config()->get_start_offline();
+ bool webcheck_enabled = updater->get_config()->get_webcheck_enabled();
+ bool exit_now = false;
+
+ // One shot run if daemon mode is disabled
+ if (updater->get_config()->get_daemon_mode() != 1)
+ exit_now = true;
+
+ // Tell the world we are running
+ updater->get_logger()->print_started();
+
+ 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
{
+ // Signal processing
+ if (caught_sig_usr1)
+ {
+ caught_sig_usr1 = false;
+ updater->get_logger()->print_caught_siguser1();
+
+ // Go offline
+ is_online = false;
+ } else if (caught_sig_usr2)
+ {
+ caught_sig_usr2 = false;
+ updater->get_logger()->print_caught_siguser2();
+
+ // 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;
+ updater->get_logger()->print_caught_sigrtmin();
+
+ // 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;
+
+ // Increase log level
+ int new_loglevel = updater->get_logger()->get_loglevel() + 1;
+ updater->get_logger()->print_caught_sigrtmax(new_loglevel);
+ updater->get_logger()->set_loglevel(new_loglevel);
+ } else if (caught_sig_term)
+ {
+ caught_sig_term = false;
+ updater->get_logger()->print_caught_sigterm();
+
+ exit_now = true;
+ } else if (caught_sig_hup)
+ {
+ caught_sig_hup = false;
+ updater->get_logger()->print_caught_sighup();
+
+ if ( updater->reload_config() != 0 )
+ {
+ updater->get_logger()->print_conf_reload_failed_exit();
+ exit(-1);
+ }
+
+ // 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
if ( is_online == true )
{
- // update all configured services
- updater->update_services();
+ // Check if webcheck_enabled differs due to caught singnal then set it in config correspondingly
+ if ( updater->get_config()->get_webcheck_enabled() != webcheck_enabled ) /*lint !e731 */
+ updater->get_config()->set_webcheck_enabled(webcheck_enabled);
+
+ 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
{
updater->get_logger()->print_offline_mode();
}
- // Snore, snore... don't hug the cpu if we are in daemon_mode.
- if ( updater->get_config()->get_daemon_mode() == 1 )
- sleep(10); /*lint !e534 */
+ // Keep old online state so we can determine
+ // if we switched from offline to online
+ old_online_state = is_online;
- }while ( updater->get_config()->get_daemon_mode() == 1 );
+ // Snore, snore... don't hog the cpu if we are in daemon_mode.
+ if ( !exit_now )
+ sleep(10); /*lint !e534 */
+ } while ( !exit_now );
// Serialize services to save their actual state.
if ( shutdown() != 0 )
git://developer.intra2net.com / bpdyndnsd / blobdiff