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
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
33 avl_tree_t *node_tree; /* Known nodes, sorted by name */
34 avl_tree_t *node_udp_tree; /* Known nodes, sorted by address and port */
38 static int node_compare(const node_t *a, const node_t *b)
40 return strcmp(a->name, b->name);
43 static int node_udp_compare(const node_t *a, const node_t *b)
45 return sockaddrcmp(&a->address, &b->address);
52 node_tree = avl_alloc_tree((avl_compare_t) node_compare, (avl_action_t) free_node);
53 node_udp_tree = avl_alloc_tree((avl_compare_t) node_udp_compare, NULL);
60 avl_delete_tree(node_udp_tree);
61 avl_delete_tree(node_tree);
64 node_t *new_node(void)
66 node_t *n = xmalloc_and_zero(sizeof(*n));
70 n->subnet_tree = new_subnet_tree();
71 n->edge_tree = new_edge_tree();
72 EVP_CIPHER_CTX_init(&n->inctx);
73 EVP_CIPHER_CTX_init(&n->outctx);
80 void free_node(node_t *n)
91 free_subnet_tree(n->subnet_tree);
94 free_edge_tree(n->edge_tree);
96 sockaddrfree(&n->address);
98 EVP_CIPHER_CTX_cleanup(&n->inctx);
99 EVP_CIPHER_CTX_cleanup(&n->outctx);
102 event_del(n->mtuevent);
113 void node_add(node_t *n)
117 avl_insert(node_tree, n);
120 void node_del(node_t *n)
122 avl_node_t *node, *next;
128 for(node = n->subnet_tree->head; node; node = next) {
134 for(node = n->edge_tree->head; node; node = next) {
140 avl_delete(node_udp_tree, n);
141 avl_delete(node_tree, n);
144 node_t *lookup_node(char *name)
152 return avl_search(node_tree, &n);
155 node_t *lookup_node_udp(const sockaddr_t *sa)
164 return avl_search(node_udp_tree, &n);
167 void update_node_udp(node_t *n, const sockaddr_t *sa)
169 avl_delete(node_udp_tree, n);
176 n->hostname = sockaddr2hostname(&n->address);
177 avl_delete(node_udp_tree, n);
178 avl_insert(node_udp_tree, n);
179 ifdebug(PROTOCOL) logger(LOG_DEBUG, "UDP address of %s set to %s", n->name, n->hostname);
181 memset(&n->address, 0, sizeof n->address);
183 ifdebug(PROTOCOL) logger(LOG_DEBUG, "UDP address of %s cleared", n->name);
187 void dump_nodes(void)
194 logger(LOG_DEBUG, _("Nodes:"));
196 for(node = node_tree->head; node; node = node->next) {
198 logger(LOG_DEBUG, _(" %s at %s cipher %d digest %d maclength %d compression %d options %lx status %04x nexthop %s via %s pmtu %d (min %d max %d)"),
199 n->name, n->hostname, n->outcipher ? n->outcipher->nid : 0,
200 n->outdigest ? n->outdigest->type : 0, n->outmaclength, n->outcompression,
201 n->options, bitfield_to_int(&n->status, sizeof n->status), n->nexthop ? n->nexthop->name : "-",
202 n->via ? n->via->name : "-", n->mtu, n->minmtu, n->maxmtu);
205 logger(LOG_DEBUG, _("End of nodes."));