2 node.c -- node tree management
3 Copyright (C) 2014 Guus Sliepen <guus@meshlink.io>,
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
24 #include "meshlink_internal.h"
28 #include "splay_tree.h"
32 static int node_compare(const node_t *a, const node_t *b) {
33 return strcmp(a->name, b->name);
36 void init_nodes(meshlink_handle_t *mesh) {
37 mesh->nodes = splay_alloc_tree((splay_compare_t) node_compare, (splay_action_t) free_node);
38 mesh->node_udp_cache = hash_alloc(0x100, sizeof(sockaddr_t));
41 void exit_nodes(meshlink_handle_t *mesh) {
42 if(mesh->node_udp_cache)
43 hash_free(mesh->node_udp_cache);
45 splay_delete_tree(mesh->nodes);
46 mesh->node_udp_cache = NULL;
50 node_t *new_node(void) {
51 node_t *n = xzalloc(sizeof(*n));
53 n->edge_tree = new_edge_tree();
56 n->devclass = _DEV_CLASS_MAX;
61 void free_node(node_t *n) {
62 n->status.destroyed = true;
65 free_edge_tree(n->edge_tree);
67 sockaddrfree(&n->address);
70 sptps_stop(&n->sptps);
82 void node_add(meshlink_handle_t *mesh, node_t *n) {
84 splay_insert(mesh->nodes, n);
87 void node_del(meshlink_handle_t *mesh, node_t *n) {
88 timeout_del(&mesh->loop, &n->mtutimeout);
90 for splay_each(edge_t, e, n->edge_tree)
93 splay_delete(mesh->nodes, n);
96 node_t *lookup_node(meshlink_handle_t *mesh, const char *name) {
97 const node_t n = {.name = (char *)name};
100 result = splay_search(mesh->nodes, &n);
105 node_t *lookup_node_udp(meshlink_handle_t *mesh, const sockaddr_t *sa) {
106 return hash_search(mesh->node_udp_cache, sa);
109 void update_node_udp(meshlink_handle_t *mesh, node_t *n, const sockaddr_t *sa) {
110 if(n == mesh->self) {
111 logger(mesh, MESHLINK_WARNING, "Trying to update UDP address of mesh->self!");
115 hash_insert(mesh->node_udp_cache, &n->address, NULL);
120 for(int i = 0; i < mesh->listen_sockets; i++) {
121 if(mesh->listen_socket[i].sa.sa.sa_family == sa->sa.sa_family) {
127 hash_insert(mesh->node_udp_cache, sa, n);
129 meshlink_hint_address(mesh, (meshlink_node_t *)n, &sa->sa);
131 if(mesh->log_level >= MESHLINK_DEBUG) {
132 char *hostname = sockaddr2hostname(&n->address);
133 logger(mesh, MESHLINK_DEBUG, "UDP address of %s set to %s", n->name, hostname);