heartbeat.h File Reference

heartbeat.c headerfile. More...

#include "../misc/scanneraux.h"

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Functions
int	check_host_still_alive (kb_t, const char *)
	Check if the hosts is still alive and set it as dead if not.

Detailed Description

heartbeat.c headerfile.

Definition in file heartbeat.h.

Function Documentation

check_host_still_alive()

int check_host_still_alive	(	kb_t	kb,
		const char *	hostname )

Check if the hosts is still alive and set it as dead if not.

Parameters

kb	Host kb where the host is set as dead.

Returns

1 if considered alive, 0 if it is dead. -1 on error or option disabled.

Definition at line 33 of file heartbeat.c.

{
  int is_alive = 0;
  boreas_error_t alive_err;
 
  /* Heartbeat will work only with boreas enabled. We check if we
     have all what we need before running a heartbeat check. */
  if (prefs_get_bool ("test_alive_hosts_only"))
    {
      const gchar *alive_test_str = prefs_get ("ALIVE_TEST");
 
      /* Don't perform a hearbeat check if the host is always considered
         alive or the alive test is not valid. */
      if (!(alive_test_str
            && atoi (alive_test_str) >= ALIVE_TEST_TCP_ACK_SERVICE
            && atoi (alive_test_str) < 32 // max value for alive test combi.
            && !((atoi (alive_test_str)) & ALIVE_TEST_CONSIDER_ALIVE)))
        return -1;
    }
  else
    {
      g_warning ("%s: Trying to perform an alive test, but Boreas is not "
                 "enabled. Heartbeat check for %s will not be performed",
                 __func__, hostname);
      return -1;
    }
 
  alive_err = is_host_alive (hostname, &is_alive);
  if (alive_err)
    {
      g_warning ("%s: Heartbeat check failed for %s with error %d.", __func__,
                 hostname, alive_err);
      return -1;
    }
 
  if (is_alive == 0)
    {
      g_message ("%s: Heartbeat check was not successful. The host %s has"
                 " been set as dead.",
                 __func__, hostname);
      kb_item_set_int_with_main_kb_check (kb, "Host/dead", 1);
      return 0;
    }
 
  return 1;
}