/** Fetch our likely public IP from our upstream UPnP IGD enabled NAT device.
* Use the connection context stored in <b>backend_state</b>. */
int
tor_upnp_fetch_public_ip(tor_fw_options_t *options, void *backend_state)
{
miniupnpc_state_t *state = (miniupnpc_state_t *) backend_state;
int r;
char externalIPAddress[16];
if (!state->init) {
r = tor_upnp_init(options, state);
if (r != UPNP_ERR_SUCCESS)
return r;
}
r = UPNP_GetExternalIPAddress(state->urls.controlURL,
state->data.first.servicetype,
externalIPAddress);
if (r != UPNPCOMMAND_SUCCESS)
goto err;
if (externalIPAddress[0]) {
fprintf(stderr, "tor-fw-helper: ExternalIPAddress = %s\n",
externalIPAddress); tor_upnp_cleanup(options, state);
options->public_ip_status = 1;
return UPNP_ERR_SUCCESS;
} else {
goto err;
}
err:
tor_upnp_cleanup(options, state);
return UPNP_ERR_GETEXTERNALIP;
}
/** Add a TCP port mapping for a single port stored in <b>tor_fw_options</b>
* and store the results in <b>backend_state</b>. */
int
tor_upnp_add_tcp_mapping(tor_fw_options_t *options, void *backend_state)
{
miniupnpc_state_t *state = (miniupnpc_state_t *) backend_state;
int r;
char internal_port_str[6];
char external_port_str[6];
if (!state->init) {
r = tor_upnp_init(options, state);
if (r != UPNP_ERR_SUCCESS)
return r;
}
if (options->verbose)
fprintf(stdout, "V: internal port: %d, external port: %d\n",
(int)options->internal_port, (int)options->external_port);
tor_snprintf(internal_port_str, sizeof(internal_port_str),
"%d", (int)options->internal_port);
tor_snprintf(external_port_str, sizeof(external_port_str),
"%d", (int)options->external_port);
r = UPNP_AddPortMapping(state->urls.controlURL,
state->data.first.servicetype,
external_port_str, internal_port_str,
#ifdef MINIUPNPC15
state->lanaddr, UPNP_DESC, "TCP", 0);
#else
state->lanaddr, UPNP_DESC, "TCP", 0, 0);
#endif
if (r != UPNPCOMMAND_SUCCESS)
return UPNP_ERR_ADDPORTMAPPING;
options->upnp_status = 1;
return UPNP_ERR_SUCCESS;
}