2 node.c -- node tree management
3 Copyright (C) 2001-2009 Guus Sliepen <guus@tinc-vpn.org>,
4 2001-2005 Ivo Timmermans
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License along
17 with this program; if not, write to the Free Software Foundation, Inc.,
18 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
23 #include "control_common.h"
24 #include "splay_tree.h"
32 splay_tree_t *node_tree; /* Known nodes, sorted by name */
33 splay_tree_t *node_udp_tree; /* Known nodes, sorted by address and port */
37 static int node_compare(const node_t *a, const node_t *b) {
38 return strcmp(a->name, b->name);
41 static int node_udp_compare(const node_t *a, const node_t *b) {
44 result = sockaddrcmp(&a->address, &b->address);
49 return (a->name && b->name) ? strcmp(a->name, b->name) : 0;
52 void init_nodes(void) {
53 node_tree = splay_alloc_tree((splay_compare_t) node_compare, (splay_action_t) free_node);
54 node_udp_tree = splay_alloc_tree((splay_compare_t) node_udp_compare, NULL);
57 void exit_nodes(void) {
58 splay_delete_tree(node_udp_tree);
59 splay_delete_tree(node_tree);
62 node_t *new_node(void) {
63 node_t *n = xmalloc_and_zero(sizeof *n);
65 if(replaywin) n->late = xmalloc_and_zero(replaywin);
66 n->subnet_tree = new_subnet_tree();
67 n->edge_tree = new_edge_tree();
74 void free_node(node_t *n) {
76 free_subnet_tree(n->subnet_tree);
79 free_edge_tree(n->edge_tree);
81 sockaddrfree(&n->address);
83 cipher_close(&n->incipher);
84 digest_close(&n->indigest);
85 cipher_close(&n->outcipher);
86 digest_close(&n->outdigest);
88 event_del(&n->mtuevent);
102 void node_add(node_t *n) {
103 splay_insert(node_tree, n);
106 void node_del(node_t *n) {
107 splay_node_t *node, *next;
111 for(node = n->subnet_tree->head; node; node = next) {
117 for(node = n->edge_tree->head; node; node = next) {
123 splay_delete(node_udp_tree, n);
124 splay_delete(node_tree, n);
127 node_t *lookup_node(char *name) {
132 return splay_search(node_tree, &n);
135 node_t *lookup_node_udp(const sockaddr_t *sa) {
141 return splay_search(node_udp_tree, &n);
144 void update_node_udp(node_t *n, const sockaddr_t *sa) {
145 splay_delete(node_udp_tree, n);
152 n->hostname = sockaddr2hostname(&n->address);
153 splay_insert(node_udp_tree, n);
154 logger(LOG_DEBUG, "UDP address of %s set to %s", n->name, n->hostname);
156 memset(&n->address, 0, sizeof n->address);
158 ifdebug(PROTOCOL) logger(LOG_DEBUG, "UDP address of %s cleared", n->name);
162 bool dump_nodes(connection_t *c) {
166 for(node = node_tree->head; node; node = node->next) {
168 send_request(c, "%d %d %s at %s cipher %d digest %d maclength %zd compression %d options %x status %04x nexthop %s via %s distance %d pmtu %d (min %d max %d)", CONTROL, REQ_DUMP_NODES,
169 n->name, n->hostname, cipher_get_nid(&n->outcipher),
170 digest_get_nid(&n->outdigest), digest_length(&n->outdigest), n->outcompression,
171 n->options, bitfield_to_int(&n->status, sizeof n->status), n->nexthop ? n->nexthop->name : "-",
172 n->via ? n->via->name : "-", n->distance, n->mtu, n->minmtu, n->maxmtu);
175 return send_request(c, "%d %d", CONTROL, REQ_DUMP_NODES);