static void ADC_client_on_connected(struct ADC_client* client)
{
ADC_TRACE;
#ifdef SSL_SUPPORT
if (client->flags & cflag_ssl)
{
net_con_update(client->con, NET_EVENT_READ | NET_EVENT_WRITE);
client->callback(client, ADC_CLIENT_SSL_HANDSHAKE, 0);
ADC_client_set_state(client, ps_conn_ssl);
net_con_ssl_handshake(client->con, net_con_ssl_mode_client, g_adc_client->ctx);
}
else
#endif
ADC_client_send_handshake(client);
}
static void probe_net_event(struct net_connection* con, int events, void *arg)
{
struct hub_probe* probe = (struct hub_probe*) net_con_get_ptr(con);
if (events == NET_EVENT_TIMEOUT)
{
char buf[512];
ssize_t len = snprintf(buf, sizeof(buf), "This hub runs on ADC protocol only!\n\nThese are the possible reasons why you see this message:\n\n * you used address without protocol specification, e.g. example.com:1234 instead of adc://example.com:1234\n * your client does not support ADC protocol.\n|$ForceMove %s|", probe->hub->config->nmdc_only_redirect_addr);
net_con_send(con, buf, (size_t) len);
probe_destroy(probe);
return;
}
if (events & NET_EVENT_READ)
{
int bytes = net_con_peek(con, probe_recvbuf, PROBE_RECV_SIZE);
if (bytes < 0)
{
probe_destroy(probe);
return;
}
if (bytes >= 4)
{
if (memcmp(probe_recvbuf, "HSUP", 4) == 0)
{
LOG_TRACE("Probed ADC");
#ifdef SSL_SUPPORT
if (probe->hub->config->tls_enable && probe->hub->config->tls_require)
{
LOG_TRACE("Not TLS connection - closing connection.");
if (*probe->hub->config->tls_require_redirect_addr)
{
char buf[512];
ssize_t len = snprintf(buf, sizeof(buf), "ISUP " ADC_PROTO_SUPPORT "\nISID AAAB\nIINF NIRedirecting...\nIQUI AAAB RD%s\n", probe->hub->config->tls_require_redirect_addr);
net_con_send(con, buf, (size_t) len);
LOG_TRACE("Not TLS connection - Redirecting to %s.", probe->hub->config->tls_require_redirect_addr);
}
else
{
LOG_TRACE("Not TLS connection - closing connection.");
}
}
else
#endif
if (user_create(probe->hub, probe->connection, &probe->addr))
{
probe->connection = 0;
}
probe_destroy(probe);
return;
}
else if ((memcmp(probe_recvbuf, "GET ", 4) == 0) ||
(memcmp(probe_recvbuf, "POST", 4) == 0) ||
(memcmp(probe_recvbuf, "HEAD", 4) == 0))
{
/* Looks like HTTP - Not supported, but we log it. */
LOG_TRACE("Probed HTTP connection. Not supported closing connection (%s)", ip_convert_to_string(&probe->addr));
const char* buf = "501 Not implemented\r\n\r\n";
net_con_send(con, buf, strlen(buf));
}
#ifdef SSL_SUPPORT
else if (bytes >= 11 &&
probe_recvbuf[0] == 22 &&
probe_recvbuf[1] == 3 && /* protocol major version */
probe_recvbuf[5] == 1 && /* message type */
probe_recvbuf[9] == probe_recvbuf[1])
{
if (probe->hub->config->tls_enable)
{
LOG_TRACE("Probed TLS %d.%d connection", (int) probe_recvbuf[1], (int) probe_recvbuf[2]);
if (user_create(probe->hub, probe->connection, &probe->addr))
{
probe->connection = 0;
}
net_con_ssl_handshake(con, net_con_ssl_mode_server, probe->hub->ctx);
}
else
{
LOG_TRACE("Probed TLS %d.%d connection. TLS disabled in hub.", (int) probe_recvbuf[9], (int) probe_recvbuf[10]);
}
}
else
{
LOG_TRACE("Probed unsupported protocol: %x%x%x%x.", (int) probe_recvbuf[0], (int) probe_recvbuf[1], (int) probe_recvbuf[2], (int) probe_recvbuf[3]);
}
#endif
probe_destroy(probe);
return;
}
}
}
