#include <openssl/rand.h>
#include "utils.h"
-#include "avl_tree.h"
+#include "splay_tree.h"
#include "conf.h"
#include "connection.h"
#include "device.h"
/* Purge edges and subnets of unreachable nodes. Use carefully. */
-static void purge(void)
-{
- avl_node_t *nnode, *nnext, *enode, *enext, *snode, *snext;
+void purge(void) {
+ splay_node_t *nnode, *nnext, *enode, *enext, *snode, *snext;
node_t *n;
edge_t *e;
subnet_t *s;
}
}
-/*
- put all file descriptors into events
- While we're at it, purge stuf that needs to be removed.
-*/
-static int build_fdset(void)
-{
- avl_node_t *node, *next;
- connection_t *c;
- int i, max = 0;
-
- cp();
-
- for(node = connection_tree->head; node; node = next) {
- next = node->next;
- c = node->data;
-
- if(c->status.remove) {
- connection_del(c);
- if(!connection_tree->head)
- purge();
- }
- }
-
- return 0;
-}
-
/*
Terminate a connection:
- Close the socket
- 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)
- return;
-
ifdebug(CONNECTIONS) logger(LOG_NOTICE, _("Closing connection with %s (%s)"),
c->name, c->hostname);
- c->status.remove = true;
c->status.active = false;
if(c->node)
if(c->socket)
closesocket(c->socket);
- event_del(&c->ev);
-
if(c->edge) {
if(report && !tunnelserver)
send_del_edge(broadcast, c->edge);
/* Check if this was our outgoing connection */
- if(c->outgoing) {
+ if(c->outgoing)
retry_outgoing(c->outgoing);
- c->outgoing = NULL;
- }
- free(c->outbuf);
- c->outbuf = NULL;
- c->outbuflen = 0;
- c->outbufsize = 0;
- c->outbufstart = 0;
+ connection_del(c);
}
/*
end does not reply in time, we consider them dead
and close the connection.
*/
-static void timeout_handler(int fd, short events, void *event)
-{
- avl_node_t *node, *next;
+static void timeout_handler(int fd, short events, void *event) {
+ splay_node_t *node, *next;
connection_t *c;
time_t now = time(NULL);
if(c->status.pinged) {
ifdebug(CONNECTIONS) logger(LOG_INFO, _("%s (%s) didn't respond to PING in %ld seconds"),
c->name, c->hostname, now - c->last_ping_time);
- c->status.timeout = true;
terminate_connection(c, true);
+ continue;
} else if(c->last_ping_time + pinginterval < now) {
send_ping(c);
}
} else {
- if(c->status.remove) {
- logger(LOG_WARNING, _("Old connection_t for %s (%s) status %04x still lingering, deleting..."),
- c->name, c->hostname, c->status.value);
- connection_del(c);
- continue;
- }
- ifdebug(CONNECTIONS) logger(LOG_WARNING, _("Timeout from %s (%s) during authentication"),
- c->name, c->hostname);
if(c->status.connecting) {
+ ifdebug(CONNECTIONS)
+ logger(LOG_WARNING, _("Timeout while connecting to %s (%s)"), c->name, c->hostname);
c->status.connecting = false;
closesocket(c->socket);
do_outgoing_connection(c);
} else {
+ ifdebug(CONNECTIONS) logger(LOG_WARNING, _("Timeout from %s (%s) during authentication"), c->name, c->hostname);
terminate_connection(c, false);
+ continue;
}
}
}
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);
- if (c->status.remove)
- 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;
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) {
+static void sighup_handler(int signal, short events, void *data) {
logger(LOG_NOTICE, _("Got %s signal"), strsignal(signal));
- purge();
+ reload_configuration();
}
-static void sighup_handler(int signal, short events, void *data) {
+int reload_configuration(void) {
connection_t *c;
- avl_node_t *node;
+ splay_node_t *node, *next;
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 */
if(!read_server_config()) {
logger(LOG_ERR, _("Unable to reread configuration file, exitting."));
event_loopexit(NULL);
- return;
+ return EINVAL;
}
/* Close connections to hosts that have a changed or deleted host config file */
- for(node = connection_tree->head; node; node = node->next) {
+ for(node = connection_tree->head; node; node = next) {
c = node->data;
+ next = node->next;
if(c->outgoing) {
free(c->outgoing->name);
/* 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));
+ return 0;
+}
+void retry(void) {
connection_t *c;
- avl_node_t *node;
+ splay_node_t *node;
for(node = connection_tree->head; node; node = node->next) {
c = node->data;
/*
this is where it all happens...
*/
-int main_loop(void)
-{
- struct timeval tv;
- int r;
+int main_loop(void) {
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();
event_add(&timeout_event, &(struct timeval){pingtimeout, 0});
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);
if(event_loop(0) < 0) {
logger(LOG_ERR, _("Error while waiting for input: %s"), strerror(errno));
}
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;