]> git.meshlink.io Git - meshlink/blobdiff - src/net.c
Remove global variables from the event loop code.
[meshlink] / src / net.c
index 4cae25c1b15206403acf9c5a18d98337dcf5f65c..12f2f33d7c48e921ced4558ef77b3e423dd5dee9 100644 (file)
--- a/src/net.c
+++ b/src/net.c
 #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
@@ -49,12 +39,12 @@ void purge(void) {
 
        /* Remove all edges owned by unreachable nodes. */
 
-       for splay_each(node_t, n, node_tree) {
+       for splay_each(node_t, n, mesh->nodes) {
                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);
+                               send_del_edge(mesh->everyone, e);
                                edge_del(e);
                        }
                }
@@ -62,9 +52,9 @@ void purge(void) {
 
        /* 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) {
+       for splay_each(node_t, n, mesh->nodes) {
                if(!n->status.reachable) {
-                       for splay_each(edge_t, e, edge_weight_tree)
+                       for splay_each(edge_t, e, mesh->edges)
                                if(e->to == n)
                                        return;
                }
@@ -88,7 +78,7 @@ void terminate_connection(connection_t *c, bool report) {
 
        if(c->edge) {
                if(report)
-                       send_del_edge(everyone, c->edge);
+                       send_del_edge(mesh->everyone, c->edge);
 
                edge_del(c->edge);
                c->edge = NULL;
@@ -103,7 +93,7 @@ void terminate_connection(connection_t *c, bool report) {
                        edge_t *e;
                        e = lookup_edge(c->node, mesh->self);
                        if(e) {
-                               send_del_edge(everyone, e);
+                               send_del_edge(mesh->everyone, e);
                                edge_del(e);
                        }
                }
@@ -132,13 +122,13 @@ void terminate_connection(connection_t *c, bool report) {
   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) {
+       for list_each(connection_t, c, mesh->connections) {
+               if(c->last_ping_time + mesh->pingtimeout <= 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) {
+                               } else if(c->last_ping_time + mesh->pinginterval <= now.tv_sec) {
                                        send_ping(c);
                                        continue;
                                } else {
@@ -154,36 +144,36 @@ static void timeout_handler(void *data) {
                }
        }
 
-       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) {
        /* 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++;
                }
@@ -194,10 +184,10 @@ static void periodic_handler(void *data) {
                           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;
 
@@ -206,7 +196,7 @@ static void periodic_handler(void *data) {
 
                                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;
@@ -217,7 +207,7 @@ static void periodic_handler(void *data) {
                                        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);
+                                       list_insert_tail(mesh->outgoings, outgoing);
                                        setup_outgoing_connection(outgoing);
                                }
                                break;
@@ -230,7 +220,7 @@ static void periodic_handler(void *data) {
                        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;
 
@@ -241,7 +231,7 @@ static void periodic_handler(void *data) {
                                        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);
                                break;
@@ -252,9 +242,9 @@ static void periodic_handler(void *data) {
                        /* 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;
@@ -262,13 +252,13 @@ static void periodic_handler(void *data) {
                                }
                                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) {
@@ -279,21 +269,20 @@ void handle_meta_connection_data(connection_t *c) {
 }
 
 int reload_configuration(void) {
-       char *fname = NULL;
+       char filename[PATH_MAX];
 
        /* Reread our own configuration file */
 
-       exit_configuration(&config_tree);
-       init_configuration(&config_tree);
+       exit_configuration(&mesh->config);
+       init_configuration(&mesh->config);
 
        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);
+       snprintf(filename, PATH_MAX,"%s" SLASH "hosts" SLASH "%s", mesh->confbase, mesh->self->name);
+       read_config_file(mesh->config, filename);
 
        /* Parse some options that are allowed to be changed while tinc is running */
 
@@ -305,53 +294,52 @@ int reload_configuration(void) {
 
        /* 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);
+       for list_each(connection_t, c, mesh->connections) {
+               snprintf(filename, PATH_MAX,"%s" SLASH "hosts" SLASH "%s", mesh->confbase, c->name);
                struct stat s;
-               if(stat(fname, &s) || s.st_mtime > last_config_check) {
+               if(stat(filename, &s) || s.st_mtime > mesh->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;
+       mesh->last_config_check = now.tv_sec;
 
        return 0;
 }
 
 void retry(void) {
        /* 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});
+       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});
 
-       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;
 }