/*
protocol_auth.c -- handle the meta-protocol, authentication
Copyright (C) 1999-2005 Ivo Timmermans,
- 2000-2006 Guus Sliepen <guus@tinc-vpn.org>
+ 2000-2007 Guus Sliepen <guus@tinc-vpn.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include <openssl/err.h>
#include <openssl/evp.h>
-#include "avl_tree.h"
+#include "splay_tree.h"
#include "conf.h"
#include "connection.h"
#include "edge.h"
#include "utils.h"
#include "xalloc.h"
-bool send_id(connection_t *c)
-{
+bool send_id(connection_t *c) {
cp();
+ gettimeofday(&c->start, NULL);
+
return send_request(c, "%d %s %d", ID, myself->connection->name,
myself->connection->protocol_version);
}
-bool id_h(connection_t *c)
-{
+bool id_h(connection_t *c, char *request) {
char name[MAX_STRING_SIZE];
cp();
- if(sscanf(c->buffer, "%*d " MAX_STRING " %d", name, &c->protocol_version) != 2) {
+ if(sscanf(request, "%*d " MAX_STRING " %d", name, &c->protocol_version) != 2) {
logger(LOG_ERR, _("Got bad %s from %s (%s)"), "ID", c->name,
c->hostname);
return false;
return false;
}
- /* If we set c->name in advance, make sure we are connected to the right host */
+ /* If this is an outgoing connection, make sure we are connected to the right host */
- if(c->name) {
+ if(c->outgoing) {
if(strcmp(c->name, name)) {
logger(LOG_ERR, _("Peer %s is %s instead of %s"), c->hostname, name,
c->name);
return send_metakey(c);
}
-bool send_metakey(connection_t *c)
-{
+bool send_metakey(connection_t *c) {
char *buffer;
int len;
bool x;
return x;
}
-bool metakey_h(connection_t *c)
-{
+bool metakey_h(connection_t *c, char *request) {
char buffer[MAX_STRING_SIZE];
int cipher, digest, maclength, compression;
int len;
cp();
- if(sscanf(c->buffer, "%*d %d %d %d %d " MAX_STRING, &cipher, &digest, &maclength, &compression, buffer) != 5) {
+ if(sscanf(request, "%*d %d %d %d %d " MAX_STRING, &cipher, &digest, &maclength, &compression, buffer) != 5) {
logger(LOG_ERR, _("Got bad %s from %s (%s)"), "METAKEY", c->name,
c->hostname);
return false;
return send_challenge(c);
}
-bool send_challenge(connection_t *c)
-{
+bool send_challenge(connection_t *c) {
char *buffer;
int len;
return send_request(c, "%d %s", CHALLENGE, buffer);
}
-bool challenge_h(connection_t *c)
-{
+bool challenge_h(connection_t *c, char *request) {
char buffer[MAX_STRING_SIZE];
int len;
cp();
- if(sscanf(c->buffer, "%*d " MAX_STRING, buffer) != 1) {
+ if(sscanf(request, "%*d " MAX_STRING, buffer) != 1) {
logger(LOG_ERR, _("Got bad %s from %s (%s)"), "CHALLENGE", c->name,
c->hostname);
return false;
return send_chal_reply(c);
}
-bool send_chal_reply(connection_t *c)
-{
+bool send_chal_reply(connection_t *c) {
char hash[EVP_MAX_MD_SIZE * 2 + 1];
EVP_MD_CTX ctx;
return send_request(c, "%d %s", CHAL_REPLY, hash);
}
-bool chal_reply_h(connection_t *c)
-{
+bool chal_reply_h(connection_t *c, char *request) {
char hishash[MAX_STRING_SIZE];
char myhash[EVP_MAX_MD_SIZE];
EVP_MD_CTX ctx;
cp();
- if(sscanf(c->buffer, "%*d " MAX_STRING, hishash) != 1) {
+ if(sscanf(request, "%*d " MAX_STRING, hishash) != 1) {
logger(LOG_ERR, _("Got bad %s from %s (%s)"), "CHAL_REPLY", c->name,
c->hostname);
return false;
return send_ack(c);
}
-bool send_ack(connection_t *c)
-{
+bool send_ack(connection_t *c) {
/* ACK message contains rest of the information the other end needs
to create node_t and edge_t structures. */
return send_request(c, "%d %s %d %lx", ACK, myport, c->estimated_weight, c->options);
}
-static void send_everything(connection_t *c)
-{
- avl_node_t *node, *node2;
+static void send_everything(connection_t *c) {
+ splay_node_t *node, *node2;
node_t *n;
subnet_t *s;
edge_t *e;
}
}
-bool ack_h(connection_t *c)
-{
+bool ack_h(connection_t *c, char *request) {
char hisport[MAX_STRING_SIZE];
char *hisaddress, *dummy;
int weight, mtu;
cp();
- if(sscanf(c->buffer, "%*d " MAX_STRING " %d %lx", hisport, &weight, &options) != 3) {
+ if(sscanf(request, "%*d " MAX_STRING " %d %lx", hisport, &weight, &options) != 3) {
logger(LOG_ERR, _("Got bad %s from %s (%s)"), "ACK", c->name,
c->hostname);
return false;
} else {
if(n->connection) {
/* Oh dear, we already have a connection to this node. */
- ifdebug(CONNECTIONS) logger(LOG_DEBUG, _("Established a second connection with %s (%s), closing old connection"),
- n->name, n->hostname);
+ ifdebug(CONNECTIONS) logger(LOG_DEBUG, _("Established a second connection with %s (%s), closing old connection"), n->connection->name, n->connection->hostname);
+
+ if(n->connection->outgoing) {
+ if(c->outgoing)
+ logger(LOG_WARNING, _("Two outgoing connections to the same node!"));
+ else
+ c->outgoing = n->connection->outgoing;
+
+ n->connection->outgoing = NULL;
+ }
+
terminate_connection(n->connection, false);
/* Run graph algorithm to purge key and make sure up/down scripts are rerun with new IP addresses and stuff */
graph();