/*
node.c -- node tree management
- Copyright (C) 2001-2009 Guus Sliepen <guus@tinc-vpn.org>,
+ Copyright (C) 2001-2013 Guus Sliepen <guus@tinc-vpn.org>,
2001-2005 Ivo Timmermans
This program is free software; you can redistribute it and/or modify
#include "system.h"
-#include "avl_tree.h"
+#include "address_cache.h"
+#include "control_common.h"
#include "logger.h"
#include "net.h"
#include "netutl.h"
#include "node.h"
+#include "splay_tree.h"
#include "utils.h"
#include "xalloc.h"
-avl_tree_t *node_tree; /* Known nodes, sorted by name */
-avl_tree_t *node_udp_tree; /* Known nodes, sorted by address and port */
+#include "ed25519/sha512.h"
node_t *myself;
return strcmp(a->name, b->name);
}
-static int node_udp_compare(const node_t *a, const node_t *b) {
- return sockaddrcmp(&a->address, &b->address);
+static int node_id_compare(const node_t *a, const node_t *b) {
+ return memcmp(&a->id, &b->id, sizeof(node_id_t));
}
-void init_nodes(void) {
- node_tree = avl_alloc_tree((avl_compare_t) node_compare, (avl_action_t) free_node);
- node_udp_tree = avl_alloc_tree((avl_compare_t) node_udp_compare, NULL);
+static int node_udp_compare(const node_t *a, const node_t *b) {
+ int result = sockaddrcmp(&a->address, &b->address);
+
+ if(result) {
+ return result;
+ }
+
+ return (a->name && b->name) ? strcmp(a->name, b->name) : 0;
}
+splay_tree_t node_tree = {
+ .compare = (splay_compare_t) node_compare,
+ .delete = (splay_action_t) free_node,
+};
+
+static splay_tree_t node_id_tree = {
+ .compare = (splay_compare_t) node_id_compare,
+};
+
+static splay_tree_t node_udp_tree = {
+ .compare = (splay_compare_t) node_udp_compare,
+};
+
void exit_nodes(void) {
- avl_delete_tree(node_udp_tree);
- avl_delete_tree(node_tree);
+ splay_empty_tree(&node_udp_tree);
+ splay_empty_tree(&node_id_tree);
+ splay_empty_tree(&node_tree);
}
node_t *new_node(void) {
- node_t *n = xmalloc_and_zero(sizeof(*n));
+ node_t *n = xzalloc(sizeof(*n));
+
+ if(replaywin) {
+ n->late = xzalloc(replaywin);
+ }
+
+ init_subnet_tree(&n->subnet_tree);
+ init_edge_tree(&n->edge_tree);
- if(replaywin) n->late = xmalloc_and_zero(replaywin);
- n->subnet_tree = new_subnet_tree();
- n->edge_tree = new_edge_tree();
- EVP_CIPHER_CTX_init(&n->inctx);
- EVP_CIPHER_CTX_init(&n->outctx);
n->mtu = MTU;
n->maxmtu = MTU;
+ n->udp_ping_rtt = -1;
return n;
}
void free_node(node_t *n) {
- if(n->inkey)
- free(n->inkey);
-
- if(n->outkey)
- free(n->outkey);
-
- if(n->subnet_tree)
- free_subnet_tree(n->subnet_tree);
-
- if(n->edge_tree)
- free_edge_tree(n->edge_tree);
+ splay_empty_tree(&n->subnet_tree);
+ splay_empty_tree(&n->edge_tree);
sockaddrfree(&n->address);
- EVP_CIPHER_CTX_cleanup(&n->inctx);
- EVP_CIPHER_CTX_cleanup(&n->outctx);
+#ifndef DISABLE_LEGACY
+ cipher_free(&n->incipher);
+ digest_free(&n->indigest);
+ cipher_free(&n->outcipher);
+ digest_free(&n->outdigest);
+#endif
- if(n->mtuevent)
- event_del(n->mtuevent);
-
- if(n->hostname)
- free(n->hostname);
+ ecdsa_free(n->ecdsa);
+ sptps_stop(&n->sptps);
- if(n->name)
- free(n->name);
+ timeout_del(&n->udp_ping_timeout);
- if(n->late)
- free(n->late);
+ free(n->hostname);
+ free(n->name);
+ free(n->late);
+
+ if(n->address_cache) {
+ close_address_cache(n->address_cache);
+ }
free(n);
}
void node_add(node_t *n) {
- avl_insert(node_tree, n);
+ unsigned char buf[64];
+ sha512(n->name, strlen(n->name), buf);
+ memcpy(&n->id, buf, sizeof(n->id));
+
+ splay_insert(&node_tree, n);
+ splay_insert(&node_id_tree, n);
}
void node_del(node_t *n) {
- avl_node_t *node, *next;
- edge_t *e;
- subnet_t *s;
+ splay_delete(&node_udp_tree, n);
- for(node = n->subnet_tree->head; node; node = next) {
- next = node->next;
- s = node->data;
+ for splay_each(subnet_t, s, &n->subnet_tree) {
subnet_del(n, s);
}
- for(node = n->edge_tree->head; node; node = next) {
- next = node->next;
- e = node->data;
+ for splay_each(edge_t, e, &n->edge_tree) {
edge_del(e);
}
- avl_delete(node_udp_tree, n);
- avl_delete(node_tree, n);
+ splay_delete(&node_id_tree, n);
+ splay_delete(&node_tree, n);
}
node_t *lookup_node(char *name) {
n.name = name;
- return avl_search(node_tree, &n);
+ return splay_search(&node_tree, &n);
}
-node_t *lookup_node_udp(const sockaddr_t *sa) {
- node_t n = {0};
-
- n.address = *sa;
- n.name = NULL;
+node_t *lookup_node_id(const node_id_t *id) {
+ node_t n = {.id = *id};
+ return splay_search(&node_id_tree, &n);
+}
- return avl_search(node_udp_tree, &n);
+node_t *lookup_node_udp(const sockaddr_t *sa) {
+ node_t tmp = {.address = *sa};
+ return splay_search(&node_udp_tree, &tmp);
}
void update_node_udp(node_t *n, const sockaddr_t *sa) {
- avl_delete(node_udp_tree, n);
+ if(n == myself) {
+ logger(DEBUG_ALWAYS, LOG_WARNING, "Trying to update UDP address of myself!");
+ return;
+ }
- if(n->hostname)
- free(n->hostname);
+ splay_delete(&node_udp_tree, n);
if(sa) {
n->address = *sa;
+ n->sock = 0;
+
+ for(int i = 0; i < listen_sockets; i++) {
+ if(listen_socket[i].sa.sa.sa_family == sa->sa.sa_family) {
+ n->sock = i;
+ break;
+ }
+ }
+
+ splay_insert(&node_udp_tree, n);
+ free(n->hostname);
n->hostname = sockaddr2hostname(&n->address);
- avl_insert(node_udp_tree, n);
- ifdebug(PROTOCOL) logger(LOG_DEBUG, "UDP address of %s set to %s", n->name, n->hostname);
- } else {
- memset(&n->address, 0, sizeof n->address);
- n->hostname = 0;
- ifdebug(PROTOCOL) logger(LOG_DEBUG, "UDP address of %s cleared", n->name);
+ logger(DEBUG_PROTOCOL, LOG_DEBUG, "UDP address of %s set to %s", n->name, n->hostname);
}
+
+ /* invalidate UDP information - note that this is a security feature as well to make sure
+ we can't be tricked into flooding any random address with UDP packets */
+ n->status.udp_confirmed = false;
+ n->maxrecentlen = 0;
+ n->mtuprobes = 0;
+ n->minmtu = 0;
+ n->maxmtu = MTU;
}
-void dump_nodes(void) {
- avl_node_t *node;
- node_t *n;
+bool dump_nodes(connection_t *c) {
+ for splay_each(node_t, n, &node_tree) {
+ char id[2 * sizeof(n->id) + 1];
+
+ for(size_t c = 0; c < sizeof(n->id); ++c) {
+ snprintf(id + 2 * c, 3, "%02x", n->id.x[c]);
+ }
+
+ id[sizeof(id) - 1] = 0;
+ send_request(c, "%d %d %s %s %s %d %d %lu %d %x %x %s %s %d %d %d %d %ld %d %"PRIu64" %"PRIu64" %"PRIu64" %"PRIu64, CONTROL, REQ_DUMP_NODES,
+ n->name, id, n->hostname ? n->hostname : "unknown port unknown",
+#ifdef DISABLE_LEGACY
+ 0, 0, 0UL,
+#else
+ cipher_get_nid(n->outcipher), digest_get_nid(n->outdigest), (unsigned long)digest_length(n->outdigest),
+#endif
+ n->outcompression, n->options, n->status.value,
+ n->nexthop ? n->nexthop->name : "-", n->via && n->via->name ? n->via->name : "-", n->distance,
+ n->mtu, n->minmtu, n->maxmtu, (long)n->last_state_change, n->udp_ping_rtt,
+ n->in_packets, n->in_bytes, n->out_packets, n->out_bytes);
+ }
- logger(LOG_DEBUG, "Nodes:");
+ return send_request(c, "%d %d", CONTROL, REQ_DUMP_NODES);
+}
- for(node = node_tree->head; node; node = node->next) {
- n = node->data;
- logger(LOG_DEBUG, " %s at %s cipher %d digest %d maclength %d compression %d options %x status %04x nexthop %s via %s pmtu %d (min %d max %d)",
- n->name, n->hostname, n->outcipher ? n->outcipher->nid : 0,
- n->outdigest ? n->outdigest->type : 0, n->outmaclength, n->outcompression,
- n->options, bitfield_to_int(&n->status, sizeof n->status), n->nexthop ? n->nexthop->name : "-",
- n->via ? n->via->name : "-", n->mtu, n->minmtu, n->maxmtu);
- }
+bool dump_traffic(connection_t *c) {
+ for splay_each(node_t, n, &node_tree)
+ send_request(c, "%d %d %s %"PRIu64" %"PRIu64" %"PRIu64" %"PRIu64, CONTROL, REQ_DUMP_TRAFFIC,
+ n->name, n->in_packets, n->in_bytes, n->out_packets, n->out_bytes);
- logger(LOG_DEBUG, "End of nodes.");
+ return send_request(c, "%d %d", CONTROL, REQ_DUMP_TRAFFIC);
}