/* Callback for dht public key changes. */
static void dht_pk_callback(void *object, int32_t number, const uint8_t *dht_public_key, void *userdata)
{
Friend_Connections *const fr_c = (Friend_Connections *)object;
Friend_Conn *const friend_con = get_conn(fr_c, number);
if (!friend_con) {
return;
}
if (public_key_cmp(friend_con->dht_temp_pk, dht_public_key) == 0) {
return;
}
change_dht_pk(fr_c, number, dht_public_key);
/* if pk changed, create a new connection.*/
if (friend_con->crypt_connection_id != -1) {
crypto_kill(fr_c->net_crypto, friend_con->crypt_connection_id);
friend_con->crypt_connection_id = -1;
handle_status(object, number, 0, userdata); /* Going offline. */
}
friend_new_connection(fr_c, number);
onion_set_friend_DHT_pubkey(fr_c->onion_c, friend_con->onion_friendnum, dht_public_key);
}
static int handle_new_connections(void *object, New_Connection *n_c)
{
Friend_Connections *const fr_c = (Friend_Connections *)object;
const int friendcon_id = getfriend_conn_id_pk(fr_c, n_c->public_key);
Friend_Conn *const friend_con = get_conn(fr_c, friendcon_id);
if (!friend_con) {
return -1;
}
if (friend_con->crypt_connection_id != -1) {
return -1;
}
const int id = accept_crypto_connection(fr_c->net_crypto, n_c);
if (id == -1) {
return -1;
}
connection_status_handler(fr_c->net_crypto, id, &handle_status, fr_c, friendcon_id);
connection_data_handler(fr_c->net_crypto, id, &handle_packet, fr_c, friendcon_id);
connection_lossy_data_handler(fr_c->net_crypto, id, &handle_lossy_packet, fr_c, friendcon_id);
friend_con->crypt_connection_id = id;
if (!net_family_is_ipv4(n_c->source.ip.family) && !net_family_is_ipv6(n_c->source.ip.family)) {
set_direct_ip_port(fr_c->net_crypto, friend_con->crypt_connection_id, friend_con->dht_ip_port, 0);
} else {
friend_con->dht_ip_port = n_c->source;
friend_con->dht_ip_port_lastrecv = mono_time_get(fr_c->mono_time);
}
if (public_key_cmp(friend_con->dht_temp_pk, n_c->dht_public_key) != 0) {
change_dht_pk(fr_c, friendcon_id, n_c->dht_public_key);
}
nc_dht_pk_callback(fr_c->net_crypto, id, &dht_pk_callback, fr_c, friendcon_id);
return 0;
}
static int handle_new_connections(void *object, New_Connection *n_c)
{
Friend_Connections *fr_c = object;
int friendcon_id = getfriend_conn_id_pk(fr_c, n_c->public_key);
Friend_Conn *friend_con = get_conn(fr_c, friendcon_id);
if (friend_con) {
if (friend_con->crypt_connection_id != -1)
return -1;
int id = accept_crypto_connection(fr_c->net_crypto, n_c);
if (id == -1) {
return -1;
}
connection_status_handler(fr_c->net_crypto, id, &handle_status, fr_c, friendcon_id);
connection_data_handler(fr_c->net_crypto, id, &handle_packet, fr_c, friendcon_id);
connection_lossy_data_handler(fr_c->net_crypto, id, &handle_lossy_packet, fr_c, friendcon_id);
friend_con->crypt_connection_id = id;
if (n_c->source.ip.family != AF_INET && n_c->source.ip.family != AF_INET6) {
set_direct_ip_port(fr_c->net_crypto, friend_con->crypt_connection_id, friend_con->dht_ip_port);
} else {
friend_con->dht_ip_port = n_c->source;
friend_con->dht_ip_port_lastrecv = unix_time();
}
if (memcmp(friend_con->dht_temp_pk, n_c->dht_public_key, crypto_box_PUBLICKEYBYTES) != 0) {
change_dht_pk(fr_c, friendcon_id, n_c->dht_public_key);
}
nc_dht_pk_callback(fr_c->net_crypto, id, &dht_pk_callback, fr_c, friendcon_id);
return 0;
}
return -1;
}
/* Callback for dht public key changes. */
static void dht_pk_callback(void *object, int32_t number, const uint8_t *dht_public_key)
{
Friend_Connections *fr_c = object;
Friend_Conn *friend_con = get_conn(fr_c, number);
if (!friend_con)
return;
if (memcmp(friend_con->dht_temp_pk, dht_public_key, crypto_box_PUBLICKEYBYTES) == 0)
return;
change_dht_pk(fr_c, number, dht_public_key);
/* if pk changed, create a new connection.*/
if (friend_con->crypt_connection_id != -1) {
crypto_kill(fr_c->net_crypto, friend_con->crypt_connection_id);
friend_con->crypt_connection_id = -1;
}
friend_new_connection(fr_c, number);
onion_set_friend_DHT_pubkey(fr_c->onion_c, friend_con->onion_friendnum, dht_public_key);
}
