#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)
-{
+static void purge(void) {
avl_node_t *nnode, *nnext, *enode, *enext, *snode, *snext;
node_t *n;
edge_t *e;
put all file descriptors into events
While we're at it, purge stuf that needs to be removed.
*/
-static int build_fdset(void)
-{
+static int build_fdset(void) {
avl_node_t *node, *next;
connection_t *c;
int i, max = 0;
- Check if we need to retry making an outgoing connection
- Deactivate the host
*/
-void terminate_connection(connection_t *c, bool report)
-{
+void terminate_connection(connection_t *c, bool report) {
cp();
if(c->status.remove)
end does not reply in time, we consider them dead
and close the connection.
*/
-static void check_dead_connections(void)
-{
+static void timeout_handler(int fd, short events, void *event) {
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);
- }
- }
}
+
+ event_add(event, &(struct timeval){pingtimeout, 0});
}
-void handle_meta_connection_data(int fd, short events, void *data)
-{
+void handle_meta_connection_data(int fd, short events, void *data) {
connection_t *c = data;
int result;
socklen_t len = sizeof(result);
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 dummy(int a, short b, void *c)
-{
+static void sigterm_handler(int signal, short events, void *data) {
+ logger(LOG_NOTICE, _("Got %s signal"), strsignal(signal));
+ 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();
}
-void sighup_handler(int signal, short events, void *data) {
+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);
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...
*/
-int main_loop(void)
-{
+int main_loop(void) {
struct timeval tv;
int r;
- time_t last_ping_check;
- struct event timeout;
+ struct event timeout_event;
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();
+ timeout_set(&timeout_event, timeout_handler, &timeout_event);
+ event_add(&timeout_event, &(struct timeval){pingtimeout, 0});
signal_set(&sighup_event, SIGHUP, sighup_handler, NULL);
signal_add(&sighup_event, NULL);
-
- last_ping_check = now;
-
- srand(now);
-
- 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;
-
- /* XXX: libevent transition: old timeout code in this loop */
- timeout_set(&timeout, dummy, NULL);
- timeout_add(&timeout, &tv);
-
- r = build_fdset();
- if(r < 0) {
- logger(LOG_ERR, _("Error building fdset: %s"), strerror(errno));
- cp_trace();
- dump_connections();
- return 1;
- }
-
- r = event_loop(EVLOOP_ONCE);
- now = time(NULL);
- if(r < 0) {
- logger(LOG_ERR, _("Error while waiting for input: %s"),
- strerror(errno));
- cp_trace();
- dump_connections();
- return 1;
- }
-
- /* 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) {
- 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;
- }
- }
-
- if(sigalrm) {
- logger(LOG_INFO, _("Flushing event queue"));
- // TODO: do this another way
- sigalrm = false;
- }
+ 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);
+
+ if(event_loop(0) < 0) {
+ logger(LOG_ERR, _("Error while waiting for input: %s"), strerror(errno));
+ return 1;
}
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);
+ event_del(&timeout_event);
return 0;
}
projects / tinc / blobdiff