/*
protocol_key.c -- handle the meta-protocol, key exchange
- Copyright (C) 1999-2005 Ivo Timmermans,
- 2000-2013 Guus Sliepen <guus@tinc-vpn.org>
+ Copyright (C) 2014-2017 Guus Sliepen <guus@meshlink.io>
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 "system.h"
-#include "cipher.h"
#include "connection.h"
-#include "crypto.h"
#include "logger.h"
+#include "meshlink_internal.h"
#include "net.h"
#include "netutl.h"
#include "node.h"
#include "utils.h"
#include "xalloc.h"
-static bool mykeyused = false;
-
-void send_key_changed(void) {
- send_request(everyone, "%d %x %s", KEY_CHANGED, rand(), myself->name);
-
- /* Immediately send new keys to directly connected nodes to keep UDP mappings alive */
-
- for list_each(connection_t, c, connection_list)
- if(c->status.active && c->node && c->node->status.reachable && !c->node->status.sptps)
- send_ans_key(c->node);
+void send_key_changed(meshlink_handle_t *mesh) {
+ send_request(mesh, mesh->everyone, NULL, "%d %x %s", KEY_CHANGED, rand(), mesh->self->name);
/* Force key exchange for connections using SPTPS */
- if(experimental) {
- for splay_each(node_t, n, node_tree)
- if(n->status.reachable && n->status.validkey && n->status.sptps)
- sptps_force_kex(&n->sptps);
- }
+ for splay_each(node_t, n, mesh->nodes)
+ if(n->status.reachable && n->status.validkey) {
+ sptps_force_kex(&n->sptps);
+ }
}
-bool key_changed_h(connection_t *c, const char *request) {
+bool key_changed_h(meshlink_handle_t *mesh, connection_t *c, const char *request) {
char name[MAX_STRING_SIZE];
node_t *n;
if(sscanf(request, "%*d %*x " MAX_STRING, name) != 1) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s)", "KEY_CHANGED",
- c->name, c->hostname);
+ logger(mesh, MESHLINK_ERROR, "Got bad %s from %s", "KEY_CHANGED", c->name);
return false;
}
- if(seen_request(request))
+ if(seen_request(mesh, request)) {
return true;
+ }
- n = lookup_node(name);
+ n = lookup_node(mesh, name);
if(!n) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Got %s from %s (%s) origin %s which does not exist",
- "KEY_CHANGED", c->name, c->hostname, name);
+ logger(mesh, MESHLINK_ERROR, "Got %s from %s origin %s which does not exist", "KEY_CHANGED", c->name, name);
return true;
}
- if(!n->status.sptps) {
- n->status.validkey = false;
- n->last_req_key = 0;
- }
-
/* Tell the others */
- if(!tunnelserver)
- forward_request(c, request);
+ forward_request(mesh, c, NULL, request);
return true;
}
-static bool send_initial_sptps_data(void *handle, uint8_t type, const char *data, size_t len) {
+static bool send_initial_sptps_data(void *handle, uint8_t type, const void *data, size_t len) {
+ (void)type;
node_t *to = handle;
+ meshlink_handle_t *mesh = to->mesh;
to->sptps.send_data = send_sptps_data;
char buf[len * 4 / 3 + 5];
b64encode(data, buf, len);
- return send_request(to->nexthop->connection, "%d %s %s %d %s", REQ_KEY, myself->name, to->name, REQ_KEY, buf);
+ return send_request(mesh, to->nexthop->connection, NULL, "%d %s %s %d %s", REQ_KEY, mesh->self->name, to->name, REQ_KEY, buf);
}
-bool send_req_key(node_t *to) {
- if(to->status.sptps) {
- if(!node_read_ecdsa_public_key(to)) {
- logger(DEBUG_PROTOCOL, LOG_DEBUG, "No ECDSA key known for %s (%s)", to->name, to->hostname);
- send_request(to->nexthop->connection, "%d %s %s %d", REQ_KEY, myself->name, to->name, REQ_PUBKEY);
- return true;
- }
+bool send_req_key(meshlink_handle_t *mesh, node_t *to) {
+ if(!node_read_public_key(mesh, to)) {
+ logger(mesh, MESHLINK_DEBUG, "No ECDSA key known for %s", to->name);
+ send_request(mesh, to->nexthop->connection, NULL, "%d %s %s %d", REQ_KEY, mesh->self->name, to->name, REQ_PUBKEY);
+ return true;
+ }
- if(to->sptps.label)
- logger(DEBUG_ALWAYS, LOG_DEBUG, "send_req_key(%s) called while sptps->label != NULL!", to->name);
-
- char label[25 + strlen(myself->name) + strlen(to->name)];
- snprintf(label, sizeof label, "tinc UDP key expansion %s %s", myself->name, to->name);
- sptps_stop(&to->sptps);
- to->status.validkey = false;
- to->status.waitingforkey = true;
- to->last_req_key = now.tv_sec;
- to->incompression = myself->incompression;
- return sptps_start(&to->sptps, to, true, true, myself->connection->ecdsa, to->ecdsa, label, sizeof label, send_initial_sptps_data, receive_sptps_record);
+ if(to->sptps.label) {
+ logger(mesh, MESHLINK_DEBUG, "send_req_key(%s) called while sptps->label != NULL!", to->name);
}
- return send_request(to->nexthop->connection, "%d %s %s", REQ_KEY, myself->name, to->name);
+ char label[sizeof(meshlink_udp_label) + strlen(mesh->self->name) + strlen(to->name) + 2];
+ snprintf(label, sizeof(label), "%s %s %s", meshlink_udp_label, mesh->self->name, to->name);
+ sptps_stop(&to->sptps);
+ to->status.validkey = false;
+ to->status.waitingforkey = true;
+ to->last_req_key = mesh->loop.now.tv_sec;
+ to->incompression = mesh->self->incompression;
+ return sptps_start(&to->sptps, to, true, true, mesh->private_key, to->ecdsa, label, sizeof(label) - 1, send_initial_sptps_data, receive_sptps_record);
}
/* REQ_KEY is overloaded to allow arbitrary requests to be routed between two nodes. */
-static bool req_key_ext_h(connection_t *c, const char *request, node_t *from, int reqno) {
+static bool req_key_ext_h(meshlink_handle_t *mesh, connection_t *c, const char *request, node_t *from, int reqno) {
+ (void)c;
+
switch(reqno) {
- case REQ_PUBKEY: {
- char *pubkey = ecdsa_get_base64_public_key(myself->connection->ecdsa);
- send_request(from->nexthop->connection, "%d %s %s %d %s", REQ_KEY, myself->name, from->name, ANS_PUBKEY, pubkey);
- free(pubkey);
- return true;
+ case REQ_PUBKEY: {
+ char *pubkey = ecdsa_get_base64_public_key(mesh->private_key);
+
+ if(!from->nexthop || !from->nexthop->connection) {
+ return false;
}
- case ANS_PUBKEY: {
- if(node_read_ecdsa_public_key(from)) {
- logger(DEBUG_PROTOCOL, LOG_WARNING, "Got ANS_PUBKEY from %s (%s) even though we already have his pubkey", from->name, from->hostname);
- return true;
- }
+ send_request(mesh, from->nexthop->connection, NULL, "%d %s %s %d %s", REQ_KEY, mesh->self->name, from->name, ANS_PUBKEY, pubkey);
+ free(pubkey);
+ return true;
+ }
- char pubkey[MAX_STRING_SIZE];
- if(sscanf(request, "%*d %*s %*s %*d " MAX_STRING, pubkey) != 1 || !(from->ecdsa = ecdsa_set_base64_public_key(pubkey))) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s): %s", "ANS_PUBKEY", from->name, from->hostname, "invalid pubkey");
- return true;
- }
+ case ANS_PUBKEY: {
+ if(node_read_public_key(mesh, from)) {
+ logger(mesh, MESHLINK_WARNING, "Got ANS_PUBKEY from %s even though we already have his pubkey", from->name);
+ return true;
+ }
+
+ char pubkey[MAX_STRING_SIZE];
- logger(DEBUG_PROTOCOL, LOG_INFO, "Learned ECDSA public key from %s (%s)", from->name, from->hostname);
- append_config_file(from->name, "ECDSAPublicKey", pubkey);
+ if(sscanf(request, "%*d %*s %*s %*d " MAX_STRING, pubkey) != 1 || !(from->ecdsa = ecdsa_set_base64_public_key(pubkey))) {
+ logger(mesh, MESHLINK_ERROR, "Got bad %s from %s: %s", "ANS_PUBKEY", from->name, "invalid pubkey");
return true;
}
- case REQ_KEY: {
- if(!node_read_ecdsa_public_key(from)) {
- logger(DEBUG_PROTOCOL, LOG_DEBUG, "No ECDSA key known for %s (%s)", from->name, from->hostname);
- send_request(from->nexthop->connection, "%d %s %s %d", REQ_KEY, myself->name, from->name, REQ_PUBKEY);
- return true;
+ logger(mesh, MESHLINK_INFO, "Learned ECDSA public key from %s", from->name);
+ from->status.dirty = true;
+
+ /* If we are trying to form an outgoing connection to this node, retry immediately */
+ for list_each(outgoing_t, outgoing, mesh->outgoings) {
+ if(outgoing->node == from && outgoing->ev.cb) {
+ outgoing->timeout = 0;
+ timeout_set(&mesh->loop, &outgoing->ev, &(struct timeval) {
+ 0, 0
+ });
}
+ }
- if(from->sptps.label)
- logger(DEBUG_ALWAYS, LOG_DEBUG, "Got REQ_KEY from %s while we already started a SPTPS session!", from->name);
+ return true;
+ }
- char buf[MAX_STRING_SIZE];
- int len;
+ case REQ_KEY: {
+ if(!node_read_public_key(mesh, from)) {
+ logger(mesh, MESHLINK_DEBUG, "No ECDSA key known for %s", from->name);
+ send_request(mesh, from->nexthop->connection, NULL, "%d %s %s %d", REQ_KEY, mesh->self->name, from->name, REQ_PUBKEY);
+ return true;
+ }
- if(sscanf(request, "%*d %*s %*s %*d " MAX_STRING, buf) != 1 || !(len = b64decode(buf, buf, strlen(buf)))) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s): %s", "REQ_SPTPS_START", from->name, from->hostname, "invalid SPTPS data");
+ if(from->sptps.label) {
+ logger(mesh, MESHLINK_DEBUG, "Got REQ_KEY from %s while we already started a SPTPS session!", from->name);
+
+ if(strcmp(mesh->self->name, from->name) < 0) {
+ logger(mesh, MESHLINK_DEBUG, "Ignoring REQ_KEY from %s.", from->name);
return true;
}
+ }
- char label[25 + strlen(from->name) + strlen(myself->name)];
- snprintf(label, sizeof label, "tinc UDP key expansion %s %s", from->name, myself->name);
- sptps_stop(&from->sptps);
- from->status.validkey = false;
- from->status.waitingforkey = true;
- from->last_req_key = now.tv_sec;
- sptps_start(&from->sptps, from, false, true, myself->connection->ecdsa, from->ecdsa, label, sizeof label, send_sptps_data, receive_sptps_record);
- sptps_receive_data(&from->sptps, buf, len);
+ char buf[MAX_STRING_SIZE];
+ int len;
+
+ if(sscanf(request, "%*d %*s %*s %*d " MAX_STRING, buf) != 1 || !(len = b64decode(buf, buf, strlen(buf)))) {
+ logger(mesh, MESHLINK_ERROR, "Got bad %s from %s: %s", "REQ_SPTPS_START", from->name, "invalid SPTPS data");
return true;
}
- case REQ_SPTPS: {
- if(!from->status.validkey) {
- logger(DEBUG_PROTOCOL, LOG_ERR, "Got REQ_SPTPS from %s (%s) but we don't have a valid key yet", from->name, from->hostname);
- return true;
- }
+ char label[sizeof(meshlink_udp_label) + strlen(from->name) + strlen(mesh->self->name) + 2];
+ snprintf(label, sizeof(label), "%s %s %s", meshlink_udp_label, from->name, mesh->self->name);
+ sptps_stop(&from->sptps);
+ from->status.validkey = false;
+ from->status.waitingforkey = true;
+ from->last_req_key = mesh->loop.now.tv_sec;
+ sptps_start(&from->sptps, from, false, true, mesh->private_key, from->ecdsa, label, sizeof(label) - 1, send_sptps_data, receive_sptps_record);
+ sptps_receive_data(&from->sptps, buf, len);
+ return true;
+ }
- char buf[MAX_STRING_SIZE];
- int len;
- if(sscanf(request, "%*d %*s %*s %*d " MAX_STRING, buf) != 1 || !(len = b64decode(buf, buf, strlen(buf)))) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s): %s", "REQ_SPTPS", from->name, from->hostname, "invalid SPTPS data");
- return true;
- }
- sptps_receive_data(&from->sptps, buf, len);
+ case REQ_SPTPS: {
+ if(!from->status.validkey) {
+ logger(mesh, MESHLINK_ERROR, "Got REQ_SPTPS from %s but we don't have a valid key yet", from->name);
return true;
}
- default:
- logger(DEBUG_ALWAYS, LOG_ERR, "Unknown extended REQ_KEY request from %s (%s): %s", from->name, from->hostname, request);
+ char buf[MAX_STRING_SIZE];
+ int len;
+
+ if(sscanf(request, "%*d %*s %*s %*d " MAX_STRING, buf) != 1 || !(len = b64decode(buf, buf, strlen(buf)))) {
+ logger(mesh, MESHLINK_ERROR, "Got bad %s from %s: %s", "REQ_SPTPS", from->name, "invalid SPTPS data");
return true;
+ }
+
+ sptps_receive_data(&from->sptps, buf, len);
+ return true;
+ }
+
+ default:
+ logger(mesh, MESHLINK_ERROR, "Unknown extended REQ_KEY request from %s: %s", from->name, request);
+ return true;
}
}
-bool req_key_h(connection_t *c, const char *request) {
+bool req_key_h(meshlink_handle_t *mesh, connection_t *c, const char *request) {
char from_name[MAX_STRING_SIZE];
char to_name[MAX_STRING_SIZE];
node_t *from, *to;
int reqno = 0;
if(sscanf(request, "%*d " MAX_STRING " " MAX_STRING " %d", from_name, to_name, &reqno) < 2) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s)", "REQ_KEY", c->name,
- c->hostname);
+ logger(mesh, MESHLINK_ERROR, "Got bad %s from %s", "REQ_KEY", c->name);
return false;
}
if(!check_id(from_name) || !check_id(to_name)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s): %s", "REQ_KEY", c->name, c->hostname, "invalid name");
+ logger(mesh, MESHLINK_ERROR, "Got bad %s from %s: %s", "REQ_KEY", c->name, "invalid name");
return false;
}
- from = lookup_node(from_name);
+ from = lookup_node(mesh, from_name);
if(!from) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Got %s from %s (%s) origin %s which does not exist in our connection list",
- "REQ_KEY", c->name, c->hostname, from_name);
+ logger(mesh, MESHLINK_ERROR, "Got %s from %s origin %s which does not exist in our connection list",
+ "REQ_KEY", c->name, from_name);
return true;
}
- to = lookup_node(to_name);
+ to = lookup_node(mesh, to_name);
if(!to) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Got %s from %s (%s) destination %s which does not exist in our connection list",
- "REQ_KEY", c->name, c->hostname, to_name);
+ logger(mesh, MESHLINK_ERROR, "Got %s from %s destination %s which does not exist in our connection list",
+ "REQ_KEY", c->name, to_name);
return true;
}
/* Check if this key request is for us */
- if(to == myself) { /* Yes */
+ if(to == mesh->self) { /* Yes */
/* Is this an extended REQ_KEY message? */
- if(experimental && reqno)
- return req_key_ext_h(c, request, from, reqno);
+ if(reqno) {
+ return req_key_ext_h(mesh, c, request, from, reqno);
+ }
- /* No, just send our key back */
- send_ans_key(from);
+ /* This should never happen. Ignore it, unless it came directly from the connected peer, in which case we disconnect. */
+ return from->connection != c;
} else {
- if(tunnelserver)
- return true;
-
if(!to->status.reachable) {
- logger(DEBUG_PROTOCOL, LOG_WARNING, "Got %s from %s (%s) destination %s which is not reachable",
- "REQ_KEY", c->name, c->hostname, to_name);
+ logger(mesh, MESHLINK_WARNING, "Got %s from %s destination %s which is not reachable",
+ "REQ_KEY", c->name, to_name);
return true;
}
- send_request(to->nexthop->connection, "%s", request);
+ send_request(mesh, to->nexthop->connection, NULL, "%s", request);
}
return true;
}
-bool send_ans_key(node_t *to) {
- if(to->status.sptps)
- abort();
-
- size_t keylen = cipher_keylength(myself->incipher);
- char key[keylen * 2 + 1];
-
- cipher_close(to->incipher);
- digest_close(to->indigest);
-
- to->incipher = cipher_open_by_nid(cipher_get_nid(myself->incipher));
- to->indigest = digest_open_by_nid(digest_get_nid(myself->indigest), digest_length(myself->indigest));
- to->incompression = myself->incompression;
-
- if(!to->incipher || !to->indigest)
- abort();
-
- randomize(key, keylen);
- if(!cipher_set_key(to->incipher, key, false))
- abort();
- if(!digest_set_key(to->indigest, key, keylen))
- abort();
-
- bin2hex(key, key, keylen);
-
- // Reset sequence number and late packet window
- mykeyused = true;
- to->received_seqno = 0;
- to->received = 0;
- if(replaywin) memset(to->late, 0, replaywin);
-
- return send_request(to->nexthop->connection, "%d %s %s %s %d %d %d %d", ANS_KEY,
- myself->name, to->name, key,
- cipher_get_nid(to->incipher),
- digest_get_nid(to->indigest),
- (int)digest_length(to->indigest),
- to->incompression);
+bool send_ans_key(meshlink_handle_t *mesh, node_t *to) {
+ (void)mesh;
+ (void)to;
+ abort();
}
-bool ans_key_h(connection_t *c, const char *request) {
+bool ans_key_h(meshlink_handle_t *mesh, connection_t *c, const char *request) {
char from_name[MAX_STRING_SIZE];
char to_name[MAX_STRING_SIZE];
char key[MAX_STRING_SIZE];
char address[MAX_STRING_SIZE] = "";
char port[MAX_STRING_SIZE] = "";
- int cipher, digest, maclength, compression, keylen;
+ int cipher, digest, maclength, compression;
node_t *from, *to;
if(sscanf(request, "%*d "MAX_STRING" "MAX_STRING" "MAX_STRING" %d %d %d %d "MAX_STRING" "MAX_STRING,
- from_name, to_name, key, &cipher, &digest, &maclength,
- &compression, address, port) < 7) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s)", "ANS_KEY", c->name,
- c->hostname);
+ from_name, to_name, key, &cipher, &digest, &maclength,
+ &compression, address, port) < 7) {
+ logger(mesh, MESHLINK_ERROR, "Got bad %s from %s", "ANS_KEY", c->name);
return false;
}
if(!check_id(from_name) || !check_id(to_name)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s): %s", "ANS_KEY", c->name, c->hostname, "invalid name");
+ logger(mesh, MESHLINK_ERROR, "Got bad %s from %s: %s", "ANS_KEY", c->name, "invalid name");
return false;
}
- from = lookup_node(from_name);
+ from = lookup_node(mesh, from_name);
if(!from) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Got %s from %s (%s) origin %s which does not exist in our connection list",
- "ANS_KEY", c->name, c->hostname, from_name);
+ logger(mesh, MESHLINK_ERROR, "Got %s from %s origin %s which does not exist in our connection list",
+ "ANS_KEY", c->name, from_name);
return true;
}
- to = lookup_node(to_name);
+ to = lookup_node(mesh, to_name);
if(!to) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Got %s from %s (%s) destination %s which does not exist in our connection list",
- "ANS_KEY", c->name, c->hostname, to_name);
+ logger(mesh, MESHLINK_ERROR, "Got %s from %s destination %s which does not exist in our connection list",
+ "ANS_KEY", c->name, to_name);
return true;
}
/* Forward it if necessary */
- if(to != myself) {
- if(tunnelserver)
- return true;
-
+ if(to != mesh->self) {
if(!to->status.reachable) {
- logger(DEBUG_ALWAYS, LOG_WARNING, "Got %s from %s (%s) destination %s which is not reachable",
- "ANS_KEY", c->name, c->hostname, to_name);
+ logger(mesh, MESHLINK_WARNING, "Got %s from %s destination %s which is not reachable",
+ "ANS_KEY", c->name, to_name);
return true;
}
if(!*address && from->address.sa.sa_family != AF_UNSPEC) {
char *address, *port;
- logger(DEBUG_PROTOCOL, LOG_DEBUG, "Appending reflexive UDP address to ANS_KEY from %s to %s", from->name, to->name);
+ logger(mesh, MESHLINK_DEBUG, "Appending reflexive UDP address to ANS_KEY from %s to %s", from->name, to->name);
sockaddr2str(&from->address, &address, &port);
- send_request(to->nexthop->connection, "%s %s %s", request, address, port);
+ send_request(mesh, to->nexthop->connection, NULL, "%s %s %s", request, address, port);
free(address);
free(port);
return true;
}
- return send_request(to->nexthop->connection, "%s", request);
+ return send_request(mesh, to->nexthop->connection, NULL, "%s", request);
}
/* Don't use key material until every check has passed. */
- cipher_close(from->outcipher);
- digest_close(from->outdigest);
from->status.validkey = false;
- if(compression < 0 || compression > 11) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Node %s (%s) uses bogus compression level!", from->name, from->hostname);
+ /* Compression is not supported. */
+ if(compression != 0) {
+ logger(mesh, MESHLINK_ERROR, "Node %s uses bogus compression level!", from->name);
return true;
}
/* SPTPS or old-style key exchange? */
- if(from->status.sptps) {
- char buf[strlen(key)];
- int len = b64decode(key, buf, strlen(key));
-
- if(!len || !sptps_receive_data(&from->sptps, buf, len))
- logger(DEBUG_ALWAYS, LOG_ERR, "Error processing SPTPS data from %s (%s)", from->name, from->hostname);
-
- if(from->status.validkey) {
- if(*address && *port) {
- logger(DEBUG_PROTOCOL, LOG_DEBUG, "Using reflexive UDP address from %s: %s port %s", from->name, address, port);
- sockaddr_t sa = str2sockaddr(address, port);
- update_node_udp(from, &sa);
- }
-
- if(from->options & OPTION_PMTU_DISCOVERY && !(from->options & OPTION_TCPONLY))
- send_mtu_probe(from);
- }
-
- return true;
- }
-
- /* Check and lookup cipher and digest algorithms */
-
- if(!(from->outcipher = cipher_open_by_nid(cipher))) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Node %s (%s) uses unknown cipher!", from->name, from->hostname);
- return false;
- }
-
- if(!(from->outdigest = digest_open_by_nid(digest, maclength))) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Node %s (%s) uses unknown digest!", from->name, from->hostname);
- return false;
- }
-
- if(maclength != digest_length(from->outdigest)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Node %s (%s) uses bogus MAC length!", from->name, from->hostname);
- return false;
- }
-
- /* Process key */
-
- keylen = hex2bin(key, key, sizeof key);
+ char buf[strlen(key)];
+ int len = b64decode(key, buf, strlen(key));
- if(keylen != cipher_keylength(from->outcipher)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Node %s (%s) uses wrong keylength!", from->name, from->hostname);
- return true;
+ if(!len || !sptps_receive_data(&from->sptps, buf, len)) {
+ logger(mesh, MESHLINK_ERROR, "Error processing SPTPS data from %s", from->name);
}
- /* Update our copy of the origin's packet key */
-
- if(!cipher_set_key(from->outcipher, key, true))
- return false;
- if(!digest_set_key(from->outdigest, key, keylen))
- return false;
-
- from->status.validkey = true;
- from->sent_seqno = 0;
+ if(from->status.validkey) {
+ if(*address && *port) {
+ logger(mesh, MESHLINK_DEBUG, "Using reflexive UDP address from %s: %s port %s", from->name, address, port);
+ sockaddr_t sa = str2sockaddr(address, port);
+ update_node_udp(mesh, from, &sa);
+ }
- if(*address && *port) {
- logger(DEBUG_PROTOCOL, LOG_DEBUG, "Using reflexive UDP address from %s: %s port %s", from->name, address, port);
- sockaddr_t sa = str2sockaddr(address, port);
- update_node_udp(from, &sa);
+ if(from->options & OPTION_PMTU_DISCOVERY && !(from->options & OPTION_TCPONLY)) {
+ send_mtu_probe(mesh, from);
+ }
}
- if(from->options & OPTION_PMTU_DISCOVERY && !(from->options & OPTION_TCPONLY))
- send_mtu_probe(from);
-
return true;
}