#include "conf.h"
#include "connection.h"
#include "device.h"
-#include "tevent.h"
#include "graph.h"
#include "logger.h"
#include "meta.h"
#include "netutl.h"
#include "process.h"
#include "protocol.h"
-#include "route.h"
#include "subnet.h"
#include "xalloc.h"
-bool do_purge = false;
volatile bool running = false;
-time_t now = 0;
-
/* Purge edges and subnets of unreachable nodes. Use carefully. */
static void purge(void)
{
avl_node_t *node, *next;
connection_t *c;
+ time_t now = time(NULL);
cp();
}
}
}
-
- if(c->outbuflen > 0 && c->last_flushed_time + pingtimeout < now) {
- if(c->status.active) {
- ifdebug(CONNECTIONS) logger(LOG_INFO,
- _("%s (%s) could not flush for %ld seconds (%d bytes remaining)"),
- c->name, c->hostname, now - c->last_flushed_time, c->outbuflen);
- c->status.timeout = true;
- terminate_connection(c, true);
- }
- }
}
}
return;
if(c->status.connecting) {
- c->status.connecting = false;
getsockopt(c->socket, SOL_SOCKET, SO_ERROR, &result, &len);
if(!result)
ifdebug(CONNECTIONS) logger(LOG_DEBUG,
_("Error while connecting to %s (%s): %s"),
c->name, c->hostname, strerror(result));
+ c->status.connecting = false;
closesocket(c->socket);
do_outgoing_connection(c);
return;
{
}
+static void sigterm_handler(int signal, short events, void *data) {
+ logger(LOG_NOTICE, _("Got %s signal"), strsignal(signal));
+ running = false;
+ event_loopexit(NULL);
+}
+
+static void sigint_handler(int signal, short events, void *data) {
+ static int saved_debug_level = -1;
+
+ logger(LOG_NOTICE, _("Got %s signal"), strsignal(signal));
+
+ if(saved_debug_level != -1) {
+ logger(LOG_NOTICE, _("Reverting to old debug level (%d)"),
+ saved_debug_level);
+ debug_level = saved_debug_level;
+ saved_debug_level = -1;
+ } else {
+ logger(LOG_NOTICE,
+ _("Temporarily setting debug level to 5. Kill me with SIGINT again to go back to level %d."),
+ debug_level);
+ saved_debug_level = debug_level;
+ debug_level = 5;
+ }
+}
+
+static void sigusr1_handler(int signal, short events, void *data) {
+ logger(LOG_NOTICE, _("Got %s signal"), strsignal(signal));
+ dump_connections();
+}
+
+static void sigusr2_handler(int signal, short events, void *data) {
+ logger(LOG_NOTICE, _("Got %s signal"), strsignal(signal));
+ dump_device_stats();
+ dump_nodes();
+ dump_edges();
+ dump_subnets();
+}
+
+static void sigwinch_handler(int signal, short events, void *data) {
+ logger(LOG_NOTICE, _("Got %s signal"), strsignal(signal));
+ purge();
+}
+
+static void sighup_handler(int signal, short events, void *data) {
+ connection_t *c;
+ avl_node_t *node;
+ char *fname;
+ struct stat s;
+ static time_t last_config_check = 0;
+
+ logger(LOG_NOTICE, _("Got %s signal"), strsignal(signal));
+
+ /* Reread our own configuration file */
+
+ exit_configuration(&config_tree);
+ init_configuration(&config_tree);
+
+ if(!read_server_config()) {
+ logger(LOG_ERR, _("Unable to reread configuration file, exitting."));
+ event_loopexit(NULL);
+ return;
+ }
+
+ /* Close connections to hosts that have a changed or deleted host config file */
+
+ for(node = connection_tree->head; node; node = node->next) {
+ c = node->data;
+
+ if(c->outgoing) {
+ free(c->outgoing->name);
+ if(c->outgoing->ai)
+ freeaddrinfo(c->outgoing->ai);
+ free(c->outgoing);
+ c->outgoing = NULL;
+ }
+
+ asprintf(&fname, "%s/hosts/%s", confbase, c->name);
+ if(stat(fname, &s) || s.st_mtime > last_config_check)
+ terminate_connection(c, c->status.active);
+ free(fname);
+ }
+
+ last_config_check = time(NULL);
+
+ /* Try to make outgoing connections */
+
+ try_outgoing_connections();
+}
+
+static void sigalrm_handler(int signal, short events, void *data) {
+ logger(LOG_NOTICE, _("Got %s signal"), strsignal(signal));
+
+ connection_t *c;
+ avl_node_t *node;
+
+ for(node = connection_tree->head; node; node = node->next) {
+ c = node->data;
+
+ if(c->outgoing && !c->node) {
+ if(timeout_initialized(&c->outgoing->ev))
+ event_del(&c->outgoing->ev);
+ if(c->status.connecting)
+ close(c->socket);
+ c->outgoing->timeout = 0;
+ do_outgoing_connection(c);
+ }
+ }
+}
+
/*
this is where it all happens...
*/
{
struct timeval tv;
int r;
- time_t last_ping_check, last_config_check;
- tevent_t *event;
+ time_t last_ping_check;
struct event timeout;
+ struct event sighup_event;
+ struct event sigint_event;
+ struct event sigterm_event;
+ struct event sigquit_event;
+ struct event sigusr1_event;
+ struct event sigusr2_event;
+ struct event sigwinch_event;
+ struct event sigalrm_event;
cp();
- last_ping_check = now;
- last_config_check = now;
+ signal_set(&sighup_event, SIGHUP, sighup_handler, NULL);
+ signal_add(&sighup_event, NULL);
+ signal_set(&sigint_event, SIGINT, sigint_handler, NULL);
+ signal_add(&sigint_event, NULL);
+ signal_set(&sigterm_event, SIGTERM, sigterm_handler, NULL);
+ signal_add(&sigterm_event, NULL);
+ signal_set(&sigquit_event, SIGQUIT, sigterm_handler, NULL);
+ signal_add(&sigquit_event, NULL);
+ signal_set(&sigusr1_event, SIGUSR1, sigusr1_handler, NULL);
+ signal_add(&sigusr1_event, NULL);
+ signal_set(&sigusr2_event, SIGUSR2, sigusr2_handler, NULL);
+ signal_add(&sigusr2_event, NULL);
+ signal_set(&sigwinch_event, SIGWINCH, sigwinch_handler, NULL);
+ signal_add(&sigwinch_event, NULL);
+ signal_set(&sigalrm_event, SIGALRM, sigalrm_handler, NULL);
+ signal_add(&sigalrm_event, NULL);
+
+ last_ping_check = time(NULL);
- srand(now);
+ srand(time(NULL));
running = true;
while(running) {
- now = time(NULL);
-
- // tv.tv_sec = 1 + (rand() & 7); /* Approx. 5 seconds, randomized to prevent global synchronisation effects */
tv.tv_sec = 1;
tv.tv_usec = 0;
}
r = event_loop(EVLOOP_ONCE);
- now = time(NULL);
if(r < 0) {
logger(LOG_ERR, _("Error while waiting for input: %s"),
strerror(errno));
/* XXX: more libevent transition */
timeout_del(&timeout);
- if(do_purge) {
- purge();
- do_purge = false;
- }
-
/* Let's check if everybody is still alive */
- if(last_ping_check + pingtimeout < now) {
+ if(last_ping_check + pingtimeout < time(NULL)) {
check_dead_connections();
- last_ping_check = now;
-
- if(routing_mode == RMODE_SWITCH)
- age_subnets();
-
- age_past_requests();
-
- /* Should we regenerate our key? */
-
- if(keyexpires < now) {
- ifdebug(STATUS) logger(LOG_INFO, _("Regenerating symmetric key"));
-
- RAND_pseudo_bytes((unsigned char *)myself->key, myself->keylength);
- if(myself->cipher)
- EVP_DecryptInit_ex(&packet_ctx, myself->cipher, NULL, (unsigned char *)myself->key, (unsigned char *)myself->key + myself->cipher->key_len);
- send_key_changed(broadcast, myself);
- keyexpires = now + keylifetime;
- }
- }
-
-
- while((event = get_expired_tevent())) {
- event->handler(event->data);
- free_tevent(event);
- }
-
- if(sigalrm) {
- logger(LOG_INFO, _("Flushing event queue"));
- flush_tevents();
- sigalrm = false;
- }
-
- if(sighup) {
- connection_t *c;
- avl_node_t *node;
- char *fname;
- struct stat s;
-
- sighup = false;
-
- /* Reread our own configuration file */
-
- exit_configuration(&config_tree);
- init_configuration(&config_tree);
-
- if(!read_server_config()) {
- logger(LOG_ERR, _("Unable to reread configuration file, exitting."));
- return 1;
- }
-
- /* Close connections to hosts that have a changed or deleted host config file */
-
- for(node = connection_tree->head; node; node = node->next) {
- c = node->data;
-
- if(c->outgoing) {
- free(c->outgoing->name);
- if(c->outgoing->ai)
- freeaddrinfo(c->outgoing->ai);
- free(c->outgoing);
- c->outgoing = NULL;
- }
-
- asprintf(&fname, "%s/hosts/%s", confbase, c->name);
- if(stat(fname, &s) || s.st_mtime > last_config_check)
- terminate_connection(c, c->status.active);
- free(fname);
- }
-
- last_config_check = now;
-
- /* Try to make outgoing connections */
-
- try_outgoing_connections();
+ last_ping_check = time(NULL);
}
}
+ signal_del(&sighup_event);
+ signal_del(&sigint_event);
+ signal_del(&sigterm_event);
+ signal_del(&sigquit_event);
+ signal_del(&sigusr1_event);
+ signal_del(&sigusr2_event);
+ signal_del(&sigwinch_event);
+ signal_del(&sigalrm_event);
+
return 0;
}
projects / tinc / blobdiff