/* 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);
}
/* 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;
friend_con->dht_ping_lastrecv = unix_time();
if (memcmp(friend_con->dht_temp_pk, dht_public_key, crypto_box_PUBLICKEYBYTES) == 0)
return;
if (friend_con->dht_lock) {
if (DHT_delfriend(fr_c->dht, friend_con->dht_temp_pk, friend_con->dht_lock) != 0) {
printf("a. Could not delete dht peer. Please report this.\n");
return;
}
friend_con->dht_lock = 0;
}
DHT_addfriend(fr_c->dht, dht_public_key, dht_ip_callback, object, number, &friend_con->dht_lock);
if (friend_con->crypt_connection_id == -1) {
friend_new_connection(fr_c, number);
}
set_connection_dht_public_key(fr_c->net_crypto, friend_con->crypt_connection_id, dht_public_key);
onion_set_friend_DHT_pubkey(fr_c->onion_c, friend_con->onion_friendnum, dht_public_key);
memcpy(friend_con->dht_temp_pk, dht_public_key, crypto_box_PUBLICKEYBYTES);
}
static int handle_fakeid_announce(void *object, const uint8_t *source_pubkey, const uint8_t *data, uint16_t length)
{
Onion_Client *onion_c = object;
if (length < FAKEID_DATA_MIN_LENGTH)
return 1;
if (length > FAKEID_DATA_MAX_LENGTH)
return 1;
int friend_num = onion_friend_num(onion_c, source_pubkey);
if (friend_num == -1)
return 1;
uint64_t no_replay;
memcpy(&no_replay, data + 1, sizeof(uint64_t));
net_to_host((uint8_t *) &no_replay, sizeof(no_replay));
if (no_replay <= onion_c->friends_list[friend_num].last_noreplay)
return 1;
onion_c->friends_list[friend_num].last_noreplay = no_replay;
if (onion_c->friends_list[friend_num].dht_pk_callback)
onion_c->friends_list[friend_num].dht_pk_callback(onion_c->friends_list[friend_num].dht_pk_callback_object,
onion_c->friends_list[friend_num].dht_pk_callback_number, data + 1 + sizeof(uint64_t));
onion_set_friend_DHT_pubkey(onion_c, friend_num, data + 1 + sizeof(uint64_t));
onion_c->friends_list[friend_num].last_seen = unix_time();
uint16_t len_nodes = length - FAKEID_DATA_MIN_LENGTH;
if (len_nodes != 0) {
Node_format nodes[MAX_SENT_NODES];
int num_nodes = unpack_nodes(nodes, MAX_SENT_NODES, 0, data + 1 + sizeof(uint64_t) + crypto_box_PUBLICKEYBYTES,
len_nodes, 1);
if (num_nodes <= 0)
return 1;
int i;
for (i = 0; i < num_nodes; ++i) {
uint8_t family = nodes[i].ip_port.ip.family;
if (family == AF_INET || family == AF_INET6) {
DHT_getnodes(onion_c->dht, &nodes[i].ip_port, nodes[i].client_id, onion_c->friends_list[friend_num].fake_client_id);
} else if (family == TCP_INET || family == TCP_INET6) {
if (onion_c->friends_list[friend_num].tcp_relay_node_callback) {
void *obj = onion_c->friends_list[friend_num].tcp_relay_node_callback_object;
uint32_t number = onion_c->friends_list[friend_num].tcp_relay_node_callback_number;
onion_c->friends_list[friend_num].tcp_relay_node_callback(obj, number, nodes[i].ip_port, nodes[i].client_id);
}
}
}
}
return 0;
}
/* 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);
}