/*
protocol_auth.c -- handle the meta-protocol, authentication
Copyright (C) 1999-2005 Ivo Timmermans,
- 2000-2017 Guus Sliepen <guus@tinc-vpn.org>
+ 2000-2022 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 "ed25519/sha512.h"
#include "keys.h"
+/* If nonzero, use null ciphers and skip all key exchanges. */
+bool bypass_security = false;
+
int invitation_lifetime;
ecdsa_t *invitation_key = NULL;
return false;
}
- char s4req[9 + (proxyuser ? strlen(proxyuser) : 0)];
+ uint8_t s4req[9 + (proxyuser ? strlen(proxyuser) : 0)];
s4req[0] = 4;
s4req[1] = 1;
memcpy(s4req + 2, &c->address.in.sin_port, 2);
}
case PROXY_SOCKS5: {
- int len = 3 + 6 + (c->address.sa.sa_family == AF_INET ? 4 : 16);
+ size_t len = 3 + 6 + (c->address.sa.sa_family == AF_INET ? 4 : 16);
c->tcplen = 2;
if(proxypass) {
len += 3 + strlen(proxyuser) + strlen(proxypass);
}
- char s5req[len];
- int i = 0;
+ uint8_t s5req[len];
+ size_t i = 0;
s5req[i++] = 5;
s5req[i++] = 1;
memcpy(hashbuf, data, 18);
memcpy(hashbuf + 18, fingerprint, sizeof(hashbuf) - 18);
sha512(hashbuf, sizeof(hashbuf), cookie);
- b64encode_urlsafe(cookie, cookie, 18);
+ b64encode_tinc_urlsafe(cookie, cookie, 18);
free(fingerprint);
char filename[PATH_MAX], usedname[PATH_MAX];
// Read the new node's Name from the file
char buf[1024] = "";
- fgets(buf, sizeof(buf), f);
+
+ if(!fgets(buf, sizeof(buf), f)) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Could not read invitation file %s\n", cookie);
+ return false;
+ }
+
size_t buflen = strlen(buf);
// Strip whitespace at the end
if(bypass_security) {
if(!c->config_tree) {
- init_configuration(&c->config_tree);
+ c->config_tree = create_configuration();
}
c->allow_request = ACK;
}
if(!c->config_tree) {
- init_configuration(&c->config_tree);
+ c->config_tree = create_configuration();
if(!read_host_config(c->config_tree, c->name, false)) {
logger(DEBUG_ALWAYS, LOG_ERR, "Peer %s had unknown identity (%s)", c->hostname, c->name);
by Cipher.
*/
- int keylen = cipher_keylength(myself->incipher);
+ size_t keylen = cipher_keylength(myself->incipher);
+ const char *cipher_name;
if(keylen <= 16) {
- c->outcipher = cipher_open_by_name("aes-128-cfb");
+ cipher_name = "aes-128-cfb";
} else if(keylen <= 24) {
- c->outcipher = cipher_open_by_name("aes-192-cfb");
+ cipher_name = "aes-192-cfb";
} else {
- c->outcipher = cipher_open_by_name("aes-256-cfb");
+ cipher_name = "aes-256-cfb";
}
- if(!c) {
+ if(!cipher_open_by_name(&c->outcipher, cipher_name)) {
return false;
}
- c->outbudget = cipher_budget(c->outcipher);
+ c->outbudget = cipher_budget(&c->outcipher);
- if(!(c->outdigest = digest_open_by_name("sha256", -1))) {
+ if(!digest_open_by_name(&c->outdigest, "sha256", DIGEST_ALGO_SIZE)) {
+ cipher_close(&c->outcipher);
return false;
}
key[0] &= 0x7F;
- if(!cipher_set_key_from_rsa(c->outcipher, key, len, true)) {
+ if(!cipher_set_key_from_rsa(&c->outcipher, key, len, true)) {
return false;
}
/* Send the meta key */
bool result = send_request(c, "%d %d %d %d %d %s", METAKEY,
- cipher_get_nid(c->outcipher),
- digest_get_nid(c->outdigest), c->outmaclength,
+ cipher_get_nid(&c->outcipher),
+ digest_get_nid(&c->outdigest), c->outmaclength,
c->outcompression, hexkey);
c->status.encryptout = true;
/* Check and lookup cipher and digest algorithms */
if(cipher) {
- if(!(c->incipher = cipher_open_by_nid(cipher)) || !cipher_set_key_from_rsa(c->incipher, key, len, false)) {
+ if(!cipher_open_by_nid(&c->incipher, cipher) || !cipher_set_key_from_rsa(&c->incipher, key, len, false)) {
logger(DEBUG_ALWAYS, LOG_ERR, "Error during initialisation of cipher from %s (%s)", c->name, c->hostname);
return false;
}
return false;
}
- c->inbudget = cipher_budget(c->incipher);
+ c->inbudget = cipher_budget(&c->incipher);
if(digest) {
- if(!(c->indigest = digest_open_by_nid(digest, -1))) {
+ if(!digest_open_by_nid(&c->indigest, digest, DIGEST_ALGO_SIZE)) {
logger(DEBUG_ALWAYS, LOG_ERR, "Error during initialisation of digest from %s (%s)", c->name, c->hostname);
return false;
}
bool send_chal_reply(connection_t *c) {
const size_t len = rsa_size(myself->connection->rsa);
- size_t digestlen = digest_length(c->indigest);
+ size_t digestlen = digest_length(&c->indigest);
char digest[digestlen * 2 + 1];
/* Calculate the hash from the challenge we received */
- if(!digest_create(c->indigest, c->mychallenge, len, digest)) {
+ if(!digest_create(&c->indigest, c->mychallenge, len, digest)) {
return false;
}
/* Check if the length of the hash is all right */
- if(inlen != digest_length(c->outdigest)) {
+ if(inlen != digest_length(&c->outdigest)) {
logger(DEBUG_ALWAYS, LOG_ERR, "Possible intruder %s (%s): %s", c->name, c->hostname, "wrong challenge reply length");
return false;
}
/* Verify the hash */
- if(!digest_verify(c->outdigest, c->hischallenge, rsa_size(c->rsa), hishash)) {
+ if(!digest_verify(&c->outdigest, c->hischallenge, rsa_size(c->rsa), hishash)) {
logger(DEBUG_ALWAYS, LOG_ERR, "Possible intruder %s (%s): %s", c->name, c->hostname, "wrong challenge reply");
return false;
}
/* Estimate weight */
gettimeofday(&now, NULL);
- c->estimated_weight = (now.tv_sec - c->start.tv_sec) * 1000 + (now.tv_usec - c->start.tv_usec) / 1000;
+ c->estimated_weight = (int)((now.tv_sec - c->start.tv_sec) * 1000 + (now.tv_usec - c->start.tv_usec) / 1000);
/* Check some options */
}
if(!get_config_int(lookup_config(c->config_tree, "Weight"), &c->estimated_weight)) {
- get_config_int(lookup_config(config_tree, "Weight"), &c->estimated_weight);
+ get_config_int(lookup_config(&config_tree, "Weight"), &c->estimated_weight);
}
return send_request(c, "%d %s %d %x", ACK, myport, c->estimated_weight, (c->options & 0xffffff) | (experimental ? (PROT_MINOR << 24) : 0));
}
if(tunnelserver) {
- for splay_each(subnet_t, s, myself->subnet_tree) {
+ for splay_each(subnet_t, s, &myself->subnet_tree) {
send_add_subnet(c, s);
}
return;
}
- for splay_each(node_t, n, node_tree) {
- for splay_each(subnet_t, s, n->subnet_tree) {
+ for splay_each(node_t, n, &node_tree) {
+ for splay_each(subnet_t, s, &n->subnet_tree) {
send_add_subnet(c, s);
}
- for splay_each(edge_t, e, n->edge_tree) {
+ for splay_each(edge_t, e, &n->edge_tree) {
send_add_edge(c, e);
}
}
n->mtu = mtu;
}
- if(get_config_int(lookup_config(config_tree, "PMTU"), &mtu) && mtu < n->mtu) {
+ if(get_config_int(lookup_config(&config_tree, "PMTU"), &mtu) && mtu < n->mtu) {
n->mtu = mtu;
}