/* Add a TCP relay tied to a connection.
*
* return 0 on success.
* return -1 on failure.
*/
int add_tcp_relay_connection(TCP_Connections *tcp_c, int connections_number, IP_Port ip_port, const uint8_t *relay_pk)
{
TCP_Connection_to *con_to = get_connection(tcp_c, connections_number);
if (!con_to)
return -1;
int tcp_connections_number = find_tcp_connection_relay(tcp_c, relay_pk);
if (tcp_connections_number != -1) {
return add_tcp_number_relay_connection(tcp_c, connections_number, tcp_connections_number);
} else {
int tcp_connections_number = add_tcp_relay(tcp_c, ip_port, relay_pk);
if (add_tcp_connection_to_conn(con_to, tcp_connections_number) == -1) {
return -1;
}
TCP_con *tcp_con = get_tcp_connection(tcp_c, tcp_connections_number);
if (!tcp_con)
return -1;
++tcp_con->lock_count;
return 0;
}
}
/* Like tox_bootstrap_from_address but for TCP relays only.
*
* return 0 on failure.
* return 1 on success.
*/
int tox_add_tcp_relay(Tox *tox, const char *address, uint16_t port, const uint8_t *public_key)
{
Messenger *m = tox;
IP_Port ip_port, ip_port_v4;
if (!addr_parse_ip(address, &ip_port.ip)) {
if (m->options.udp_disabled) /* Disable DNS when udp is disabled. */
return 0;
IP *ip_extra = NULL;
ip_init(&ip_port.ip, m->options.ipv6enabled);
if (m->options.ipv6enabled) {
/* setup for getting BOTH: an IPv6 AND an IPv4 address */
ip_port.ip.family = AF_UNSPEC;
ip_reset(&ip_port_v4.ip);
ip_extra = &ip_port_v4.ip;
}
if (!addr_resolve(address, &ip_port.ip, ip_extra))
return 0;
}
ip_port.port = htons(port);
add_tcp_relay(m->net_crypto, ip_port, public_key);
onion_add_path_node(m->onion_c, ip_port, public_key); //TODO: move this
return 1;
}
/* Add a TCP relay to the instance.
*
* return 0 on success.
* return -1 on failure.
*/
int add_tcp_relay_global(TCP_Connections *tcp_c, IP_Port ip_port, const uint8_t *relay_pk)
{
int tcp_connections_number = find_tcp_connection_relay(tcp_c, relay_pk);
if (tcp_connections_number != -1)
return -1;
if (add_tcp_relay(tcp_c, ip_port, relay_pk) == -1)
return -1;
return 0;
}
/* callback for recv TCP relay nodes. */
static int tcp_relay_node_callback(void *object, uint32_t number, IP_Port ip_port, const uint8_t *public_key)
{
Friend_Connections *fr_c = object;
Friend_Conn *friend_con = get_conn(fr_c, number);
if (!friend_con)
return -1;
if (friend_con->crypt_connection_id != -1) {
return friend_add_tcp_relay(fr_c, number, ip_port, public_key);
} else {
return add_tcp_relay(fr_c->net_crypto, ip_port, public_key);
}
}
/* Add a TCP relay tied to a connection.
*
* return 0 on success.
* return -1 on failure.
*/
int add_tcp_relay_connection(TCP_Connections *tcp_c, int connections_number, IP_Port ip_port, const uint8_t *relay_pk)
{
TCP_Connection_to *con_to = get_connection(tcp_c, connections_number);
if (!con_to)
return -1;
int tcp_connections_number = find_tcp_connection_relay(tcp_c, relay_pk);
if (tcp_connections_number != -1) {
if (add_tcp_connection_to_conn(con_to, tcp_connections_number) == -1)
return -1;
TCP_con *tcp_con = get_tcp_connection(tcp_c, tcp_connections_number);
if (!tcp_con)
return -1;
++tcp_con->lock_count;
if (tcp_con->status == TCP_CONN_CONNECTED) {
send_tcp_relay_routing_request(tcp_c, tcp_connections_number, con_to->public_key);
}
return 0;
} else {
int tcp_connections_number = add_tcp_relay(tcp_c, ip_port, relay_pk);
if (add_tcp_connection_to_conn(con_to, tcp_connections_number) == -1) {
return -1;
}
TCP_con *tcp_con = get_tcp_connection(tcp_c, tcp_connections_number);
if (!tcp_con)
return -1;
++tcp_con->lock_count;
return 0;
}
}
/* TODO: expose this properly. */
static int tox_add_tcp_relay(Tox *tox, const char *address, uint8_t ipv6enabled, uint16_t port, uint8_t *public_key)
{
Messenger *m = tox;
IP_Port ip_port_v64;
IP *ip_extra = NULL;
IP_Port ip_port_v4;
ip_init(&ip_port_v64.ip, ipv6enabled);
if (ipv6enabled) {
/* setup for getting BOTH: an IPv6 AND an IPv4 address */
ip_port_v64.ip.family = AF_UNSPEC;
ip_reset(&ip_port_v4.ip);
ip_extra = &ip_port_v4.ip;
}
if (addr_resolve_or_parse_ip(address, &ip_port_v64.ip, ip_extra)) {
ip_port_v64.port = port;
add_tcp_relay(m->net_crypto, ip_port_v64, public_key);
return 1;
} else {
return 0;
}
}
