#include "protocol.h"
#include "xalloc.h"
-int contradicting_add_edge = 0;
-int contradicting_del_edge = 0;
-static int sleeptime = 10;
-time_t last_config_check = 0;
-static timeout_t pingtimer;
-static timeout_t periodictimer;
-
-//TODO: move this to a better place
-char *confbase;
-
-/* Purge edges of unreachable nodes. Use carefully. */
-
-// TODO: remove
-void purge(void) {
- logger(DEBUG_PROTOCOL, LOG_DEBUG, "Purging unreachable nodes");
-
- /* Remove all edges owned by unreachable nodes. */
-
- for splay_each(node_t, n, node_tree) {
- if(!n->status.reachable) {
- logger(DEBUG_SCARY_THINGS, LOG_DEBUG, "Purging node %s (%s)", n->name, n->hostname);
-
- for splay_each(edge_t, e, n->edge_tree) {
- send_del_edge(everyone, e);
- edge_del(e);
- }
- }
- }
-
- /* Check if anyone else claims to have an edge to an unreachable node. If not, delete node. */
-
- for splay_each(node_t, n, node_tree) {
- if(!n->status.reachable) {
- for splay_each(edge_t, e, edge_weight_tree)
- if(e->to == n)
- return;
- }
- }
-}
-
/*
Terminate a connection:
- Mark it as inactive
- Kill it with fire
- Check if we need to retry making an outgoing connection
*/
-void terminate_connection(connection_t *c, bool report) {
+void terminate_connection(meshlink_handle_t *mesh, connection_t *c, bool report) {
logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Closing connection with %s (%s)", c->name, c->hostname);
c->status.active = false;
if(c->edge) {
if(report)
- send_del_edge(everyone, c->edge);
+ send_del_edge(mesh, mesh->everyone, c->edge);
- edge_del(c->edge);
+ edge_del(mesh, c->edge);
c->edge = NULL;
/* Run MST and SSSP algorithms */
- graph();
+ graph(mesh);
/* If the node is not reachable anymore but we remember it had an edge to us, clean it up */
edge_t *e;
e = lookup_edge(c->node, mesh->self);
if(e) {
- send_del_edge(everyone, e);
- edge_del(e);
+ send_del_edge(mesh, mesh->everyone, e);
+ edge_del(mesh, e);
}
}
}
outgoing_t *outgoing = c->outgoing;
- connection_del(c);
+ connection_del(mesh, c);
/* Check if this was our outgoing connection */
if(outgoing)
- do_outgoing_connection(outgoing);
+ do_outgoing_connection(mesh, outgoing);
#ifndef HAVE_MINGW
/* Clean up dead proxy processes */
end does not reply in time, we consider them dead
and close the connection.
*/
-static void timeout_handler(void *data) {
- for list_each(connection_t, c, connection_list) {
- if(c->last_ping_time + pingtimeout <= now.tv_sec) {
+static void timeout_handler(event_loop_t *loop, void *data) {
+ meshlink_handle_t *mesh = loop->data;
+
+ for list_each(connection_t, c, mesh->connections) {
+ if(c->last_ping_time + mesh->pingtimeout <= mesh->loop.now.tv_sec) {
if(c->status.active) {
if(c->status.pinged) {
- logger(DEBUG_CONNECTIONS, LOG_INFO, "%s (%s) didn't respond to PING in %ld seconds", c->name, c->hostname, (long)now.tv_sec - c->last_ping_time);
- } else if(c->last_ping_time + pinginterval <= now.tv_sec) {
- send_ping(c);
+ logger(DEBUG_CONNECTIONS, LOG_INFO, "%s (%s) didn't respond to PING in %ld seconds", c->name, c->hostname, (long)mesh->loop.now.tv_sec - c->last_ping_time);
+ } else if(c->last_ping_time + mesh->pinginterval <= mesh->loop.now.tv_sec) {
+ send_ping(mesh, c);
continue;
} else {
continue;
else
logger(DEBUG_CONNECTIONS, LOG_WARNING, "Timeout from %s (%s) during authentication", c->name, c->hostname);
}
- terminate_connection(c, c->status.active);
+ terminate_connection(mesh, c, c->status.active);
}
}
- timeout_set(data, &(struct timeval){pingtimeout, rand() % 100000});
+ timeout_set(&mesh->loop, data, &(struct timeval){mesh->pingtimeout, rand() % 100000});
}
-static void periodic_handler(void *data) {
+static void periodic_handler(event_loop_t *loop, void *data) {
+ meshlink_handle_t *mesh = loop->data;
+
/* Check if there are too many contradicting ADD_EDGE and DEL_EDGE messages.
This usually only happens when another node has the same Name as this node.
If so, sleep for a short while to prevent a storm of contradicting messages.
*/
- if(contradicting_del_edge > 100 && contradicting_add_edge > 100) {
- logger(DEBUG_ALWAYS, LOG_WARNING, "Possible node with same Name as us! Sleeping %d seconds.", sleeptime);
- usleep(sleeptime * 1000000LL);
- sleeptime *= 2;
- if(sleeptime < 0)
- sleeptime = 3600;
+ if(mesh->contradicting_del_edge > 100 && mesh->contradicting_add_edge > 100) {
+ logger(DEBUG_ALWAYS, LOG_WARNING, "Possible node with same Name as us! Sleeping %d seconds.", mesh->sleeptime);
+ usleep(mesh->sleeptime * 1000000LL);
+ mesh->sleeptime *= 2;
+ if(mesh->sleeptime < 0)
+ mesh->sleeptime = 3600;
} else {
- sleeptime /= 2;
- if(sleeptime < 10)
- sleeptime = 10;
+ mesh->sleeptime /= 2;
+ if(mesh->sleeptime < 10)
+ mesh->sleeptime = 10;
}
- contradicting_add_edge = 0;
- contradicting_del_edge = 0;
+ mesh->contradicting_add_edge = 0;
+ mesh->contradicting_del_edge = 0;
/* If AutoConnect is set, check if we need to make or break connections. */
- if(autoconnect && node_tree->count > 1) {
+ if(autoconnect && mesh->nodes->count > 1) {
/* Count number of active connections */
int nc = 0;
- for list_each(connection_t, c, connection_list) {
+ for list_each(connection_t, c, mesh->connections) {
if(c->status.active)
nc++;
}
and we are not already trying to make one, create an
outgoing connection to this node.
*/
- int r = rand() % node_tree->count;
+ int r = rand() % mesh->nodes->count;
int i = 0;
- for splay_each(node_t, n, node_tree) {
+ for splay_each(node_t, n, mesh->nodes) {
if(i++ != r)
continue;
bool found = false;
- for list_each(outgoing_t, outgoing, outgoing_list) {
+ for list_each(outgoing_t, outgoing, mesh->outgoings) {
if(!strcmp(outgoing->name, n->name)) {
found = true;
break;
}
if(!found) {
+ //TODO: if the node is blacklisted the connection will not happen, but
+ //the user will read this debug message "Autoconnecting to %s" that is misleading
logger(DEBUG_CONNECTIONS, LOG_INFO, "Autoconnecting to %s", n->name);
outgoing_t *outgoing = xzalloc(sizeof *outgoing);
outgoing->name = xstrdup(n->name);
- list_insert_tail(outgoing_list, outgoing);
- setup_outgoing_connection(outgoing);
+ list_insert_tail(mesh->outgoings, outgoing);
+ setup_outgoing_connection(mesh, outgoing);
}
break;
}
int r = rand() % nc;
int i = 0;
- for list_each(connection_t, c, connection_list) {
+ for list_each(connection_t, c, mesh->connections) {
if(!c->status.active)
continue;
break;
logger(DEBUG_CONNECTIONS, LOG_INFO, "Autodisconnecting from %s", c->name);
- list_delete(outgoing_list, c->outgoing);
+ list_delete(mesh->outgoings, c->outgoing);
c->outgoing = NULL;
- terminate_connection(c, c->status.active);
+ terminate_connection(mesh, c, c->status.active);
break;
}
}
/* If we have enough active connections,
remove any pending outgoing connections.
*/
- for list_each(outgoing_t, o, outgoing_list) {
+ for list_each(outgoing_t, o, mesh->outgoings) {
bool found = false;
- for list_each(connection_t, c, connection_list) {
+ for list_each(connection_t, c, mesh->connections) {
if(c->outgoing == o) {
found = true;
break;
}
if(!found) {
logger(DEBUG_CONNECTIONS, LOG_INFO, "Cancelled outgoing connection to %s", o->name);
- list_delete_node(outgoing_list, node);
+ list_delete_node(mesh->outgoings, node);
}
}
}
}
- timeout_set(data, &(struct timeval){5, rand() % 100000});
+ timeout_set(&mesh->loop, data, &(struct timeval){5, rand() % 100000});
}
-void handle_meta_connection_data(connection_t *c) {
- if (!receive_meta(c)) {
- terminate_connection(c, c->status.active);
+void handle_meta_connection_data(meshlink_handle_t *mesh, connection_t *c) {
+ if (!receive_meta(mesh, c)) {
+ terminate_connection(mesh, c, c->status.active);
return;
}
}
-int reload_configuration(void) {
- char *fname = NULL;
-
- /* Reread our own configuration file */
-
- exit_configuration(&config_tree);
- init_configuration(&config_tree);
-
- if(!read_server_config()) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Unable to reread configuration file.");
- return EINVAL;
- }
-
- xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, mesh->self->name);
- read_config_file(config_tree, fname);
- free(fname);
-
- /* Parse some options that are allowed to be changed while tinc is running */
-
- setup_myself_reloadable();
-
- /* Try to make outgoing connections */
-
- try_outgoing_connections();
-
- /* Close connections to hosts that have a changed or deleted host config file */
-
- for list_each(connection_t, c, connection_list) {
- xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name);
- struct stat s;
- if(stat(fname, &s) || s.st_mtime > last_config_check) {
- logger(DEBUG_CONNECTIONS, LOG_INFO, "Host config file of %s has been changed", c->name);
- terminate_connection(c, c->status.active);
- }
- free(fname);
- }
-
- last_config_check = now.tv_sec;
-
- return 0;
-}
-
-void retry(void) {
+void retry(meshlink_handle_t *mesh) {
/* Reset the reconnection timers for all outgoing connections */
- for list_each(outgoing_t, outgoing, outgoing_list) {
+ for list_each(outgoing_t, outgoing, mesh->outgoings) {
outgoing->timeout = 0;
if(outgoing->ev.cb)
- timeout_set(&outgoing->ev, &(struct timeval){0, 0});
+ timeout_set(&mesh->loop, &outgoing->ev, &(struct timeval){0, 0});
}
/* Check for outgoing connections that are in progress, and reset their ping timers */
- for list_each(connection_t, c, connection_list) {
+ for list_each(connection_t, c, mesh->connections) {
if(c->outgoing && !c->node)
c->last_ping_time = 0;
}
/* Kick the ping timeout handler */
- timeout_set(&pingtimer, &(struct timeval){0, 0});
+ timeout_set(&mesh->loop, &mesh->pingtimer, &(struct timeval){0, 0});
}
/*
this is where it all happens...
*/
-int main_loop(void) {
- timeout_add(&pingtimer, timeout_handler, &pingtimer, &(struct timeval){pingtimeout, rand() % 100000});
- timeout_add(&periodictimer, periodic_handler, &periodictimer, &(struct timeval){pingtimeout, rand() % 100000});
+int main_loop(meshlink_handle_t *mesh) {
+ timeout_add(&mesh->loop, &mesh->pingtimer, timeout_handler, &mesh->pingtimer, &(struct timeval){mesh->pingtimeout, rand() % 100000});
+ timeout_add(&mesh->loop, &mesh->periodictimer, periodic_handler, &mesh->periodictimer, &(struct timeval){mesh->pingtimeout, rand() % 100000});
+
+ //Add signal handler
+ mesh->datafromapp.signum = 0;
+ signal_add(&(mesh->loop),&(mesh->datafromapp), (signal_cb_t)meshlink_send_from_queue,mesh, mesh->datafromapp.signum);
- if(!event_loop()) {
+ if(!event_loop_run(&mesh->loop)) {
logger(DEBUG_ALWAYS, LOG_ERR, "Error while waiting for input: %s", strerror(errno));
return 1;
}
- timeout_del(&periodictimer);
- timeout_del(&pingtimer);
+ timeout_del(&mesh->loop, &mesh->periodictimer);
+ timeout_del(&mesh->loop, &mesh->pingtimer);
return 0;
}
projects / meshlink / blobdiff