Example #1
0
DWORD WINAPI wf_client_thread(LPVOID lpParam)
{
	MSG msg;
	int index;
	int rcount;
	int wcount;
	int width;
	int height;
	BOOL msg_ret;
	int quit_msg;
	void* rfds[32];
	void* wfds[32];
	int fds_count;
	HANDLE fds[64];
	wfContext* wfc;
	freerdp* instance;
	rdpChannels* channels;

	instance = (freerdp*) lpParam;
	assert(NULL != instance);

	wfc = (wfContext*) instance->context;
	assert(NULL != wfc);

	ZeroMemory(rfds, sizeof(rfds));
	ZeroMemory(wfds, sizeof(wfds));

	if (freerdp_connect(instance) != TRUE)
		return 0;

	channels = instance->context->channels;

	while (1)
	{
		rcount = 0;
		wcount = 0;

		if (freerdp_get_fds(instance, rfds, &rcount, wfds, &wcount) != TRUE)
		{
			fprintf(stderr, "Failed to get FreeRDP file descriptor\n");
			break;
		}
		if (wf_get_fds(instance, rfds, &rcount, wfds, &wcount) != TRUE)
		{
			fprintf(stderr, "Failed to get wfreerdp file descriptor\n");
			break;
		}
		if (freerdp_channels_get_fds(channels, instance, rfds, &rcount, wfds, &wcount) != TRUE)
		{
			fprintf(stderr, "Failed to get channel manager file descriptor\n");
			break;
		}

		fds_count = 0;
		/* setup read fds */
		for (index = 0; index < rcount; index++)
		{
			fds[fds_count++] = rfds[index];
		}
		/* setup write fds */
		for (index = 0; index < wcount; index++)
		{
			fds[fds_count++] = wfds[index];
		}
		/* exit if nothing to do */
		if (fds_count == 0)
		{
			fprintf(stderr, "wfreerdp_run: fds_count is zero\n");
			break;
		}

		/* do the wait */
		if (MsgWaitForMultipleObjects(fds_count, fds, FALSE, 1000, QS_ALLINPUT) == WAIT_FAILED)
		{
			fprintf(stderr, "wfreerdp_run: WaitForMultipleObjects failed: 0x%04X\n", GetLastError());
			break;
		}

		if (freerdp_check_fds(instance) != TRUE)
		{
			fprintf(stderr, "Failed to check FreeRDP file descriptor\n");
			break;
		}
		if (freerdp_shall_disconnect(instance))	
		{
			break;
		}
		if (wf_check_fds(instance) != TRUE)
		{
			fprintf(stderr, "Failed to check wfreerdp file descriptor\n");
			break;
		}
		if (freerdp_channels_check_fds(channels, instance) != TRUE)
		{
			fprintf(stderr, "Failed to check channel manager file descriptor\n");
			break;
		}
		wf_process_channel_event(channels, instance);

		quit_msg = FALSE;

		while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE))
		{
			msg_ret = GetMessage(&msg, NULL, 0, 0);

			if (instance->settings->EmbeddedWindow)
			{
				if ((msg.message == WM_SETFOCUS) && (msg.lParam == 1))
				{
					PostMessage(wfc->hwnd, WM_SETFOCUS, 0, 0);
				}
				else if ((msg.message == WM_KILLFOCUS) && (msg.lParam == 1))
				{
					PostMessage(wfc->hwnd, WM_KILLFOCUS, 0, 0);
				}
			}

			if (msg.message == WM_SIZE)
			{
				width = LOWORD(msg.lParam);
				height = HIWORD(msg.lParam);

				//wfc->client_width = width;
				//wfc->client_height = height;

				SetWindowPos(wfc->hwnd, HWND_TOP, 0, 0, width, height, SWP_FRAMECHANGED);
			}

			if ((msg_ret == 0) || (msg_ret == -1))
			{
				quit_msg = TRUE;
				break;
			}

			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}

		if (quit_msg)
			break;
	}

	/* cleanup */
	freerdp_channels_close(channels, instance);
	freerdp_disconnect(instance);

	printf("Main thread exited.\n");

	ExitThread(0);
	
	return 0;
}
Example #2
0
static int android_freerdp_run(freerdp* instance)
{
	int i;
	int fds;
	int max_fds;
	int rcount;
	int wcount;
	int fd_input_event;
	HANDLE input_event = NULL;
	void* rfds[32];
	void* wfds[32];
	fd_set rfds_set;
	fd_set wfds_set;
	int select_status;
	struct timeval timeout;

	const rdpSettings* settings = instance->context->settings;

	HANDLE input_thread = NULL;
	HANDLE channels_thread = NULL;
	
	BOOL async_input = settings->AsyncInput;
	BOOL async_channels = settings->AsyncChannels;
	BOOL async_transport = settings->AsyncTransport;

	DEBUG_ANDROID("AsyncUpdate=%d", settings->AsyncUpdate);
	DEBUG_ANDROID("AsyncInput=%d", settings->AsyncInput);
	DEBUG_ANDROID("AsyncChannels=%d", settings->AsyncChannels);
	DEBUG_ANDROID("AsyncTransport=%d", settings->AsyncTransport);

	memset(rfds, 0, sizeof(rfds));
	memset(wfds, 0, sizeof(wfds));

	if (!freerdp_connect(instance))
	{
		freerdp_callback("OnConnectionFailure", "(I)V", instance);
		return 0;
	}

	if (async_input)
	{
		if (!(input_thread = CreateThread(NULL, 0,
				(LPTHREAD_START_ROUTINE) jni_input_thread, instance, 0, NULL)))
		{
			DEBUG_ANDROID("Failed to create async input thread\n");
			goto disconnect;
		}
	}
	      
	if (async_channels)
	{
		if (!(channels_thread = CreateThread(NULL, 0,
				(LPTHREAD_START_ROUTINE) jni_channels_thread, instance, 0, NULL)))
		{
			DEBUG_ANDROID("Failed to create async channels thread\n");
			goto disconnect;
		}
	}

	((androidContext*)instance->context)->is_connected = TRUE;
	while (!freerdp_shall_disconnect(instance))
	{
		rcount = 0;
		wcount = 0;

		if (!async_transport)
		{
			if (freerdp_get_fds(instance, rfds, &rcount, wfds, &wcount) != TRUE)
			{
				DEBUG_ANDROID("Failed to get FreeRDP file descriptor\n");
				break;
			}
		}

		if (!async_channels)
		{
			if (freerdp_channels_get_fds(instance->context->channels, instance, rfds, &rcount, wfds, &wcount) != TRUE)
			{
				DEBUG_ANDROID("Failed to get channel manager file descriptor\n");
				break;
			}
		}

		if (!async_input)
		{
			if (android_get_fds(instance, rfds, &rcount, wfds, &wcount) != TRUE)
			{
				DEBUG_ANDROID("Failed to get android file descriptor\n");
				break;
			}
		}
		else
		{
			input_event = freerdp_get_message_queue_event_handle(instance, FREERDP_INPUT_MESSAGE_QUEUE);
			fd_input_event = GetEventFileDescriptor(input_event);
			rfds[rcount++] = (void*) (long) fd_input_event;
		}

		max_fds = 0;
		FD_ZERO(&rfds_set);
		FD_ZERO(&wfds_set);

		for (i = 0; i < rcount; i++)
		{
			fds = (int)(long)(rfds[i]);

			if (fds > max_fds)
				max_fds = fds;

			FD_SET(fds, &rfds_set);
		}

		if (max_fds == 0)
			break;

		timeout.tv_sec = 1;
		timeout.tv_usec = 0;

		select_status = select(max_fds + 1, &rfds_set, NULL, NULL, &timeout);

		if (select_status == 0)
			continue;
		else if (select_status == -1)
		{
			/* these are not really errors */
			if (!((errno == EAGAIN) ||
				(errno == EWOULDBLOCK) ||
				(errno == EINPROGRESS) ||
				(errno == EINTR))) /* signal occurred */
			{
				DEBUG_ANDROID("android_run: select failed\n");
				break;
			}
		}
		
		if (freerdp_shall_disconnect(instance))
			break;

		if (!async_transport)
		{
			if (freerdp_check_fds(instance) != TRUE)
			{
				DEBUG_ANDROID("Failed to check FreeRDP file descriptor\n");
				break;
			}
		}

		if (!async_input)
		{
			if (android_check_fds(instance) != TRUE)
			{
				DEBUG_ANDROID("Failed to check android file descriptor\n");
				break;
			}
		}
		else if (input_event)
		{
			if (WaitForSingleObject(input_event, 0) == WAIT_OBJECT_0)
			{
				if (!freerdp_message_queue_process_pending_messages(instance,
							FREERDP_INPUT_MESSAGE_QUEUE))
				{
					DEBUG_ANDROID("User Disconnect");
					break;
				}
			}
		}

		if (!async_channels)
		{
			if (freerdp_channels_check_fds(instance->context->channels, instance) != TRUE)
			{
				DEBUG_ANDROID("Failed to check channel manager file descriptor\n");
				break;
			}
		}
	}

disconnect:
	DEBUG_ANDROID("Prepare shutdown...");

	// issue another OnDisconnecting here in case the disconnect was initiated by the server and not our client
	freerdp_callback("OnDisconnecting", "(I)V", instance);
	
	DEBUG_ANDROID("Close channels...");
	freerdp_channels_disconnect(instance->context->channels, instance);

	DEBUG_ANDROID("Cleanup threads...");

	if (async_channels && channels_thread)
	{
		WaitForSingleObject(channels_thread, INFINITE);
		CloseHandle(channels_thread);
	}
 
	if (async_input && input_thread)
	{
		wMessageQueue* input_queue = freerdp_get_message_queue(instance, FREERDP_INPUT_MESSAGE_QUEUE);
		if (input_queue)
		{
			if (MessageQueue_PostQuit(input_queue, 0))
				WaitForSingleObject(input_thread, INFINITE);
		}
		CloseHandle(input_thread);
	}

	DEBUG_ANDROID("run Disconnecting...");
	freerdp_disconnect(instance);
	freerdp_callback("OnDisconnected", "(I)V", instance);

	DEBUG_ANDROID("run Quit.");

	return 0;
}
Example #3
0
void* shw_client_thread(void* arg)
{
	int index;
	int rcount;
	int wcount;
	BOOL bSuccess;
	void* rfds[32];
	void* wfds[32];
	int fds_count;
	HANDLE fds[64];
	shwContext* shw;
	rdpContext* context;
	rdpChannels* channels;
	freerdp* instance = (freerdp*) arg;

	ZeroMemory(rfds, sizeof(rfds));
	ZeroMemory(wfds, sizeof(wfds));

	context = (rdpContext*) instance->context;
	shw = (shwContext*) context;

	bSuccess = freerdp_connect(instance);

	WLog_INFO(TAG, "freerdp_connect: %d", bSuccess);

	if (!bSuccess)
	{
		ExitThread(0);
		return NULL;
	}

	channels = instance->context->channels;

	while (1)
	{
		rcount = 0;
		wcount = 0;

		if (!freerdp_get_fds(instance, rfds, &rcount, wfds, &wcount))
		{
			WLog_ERR(TAG, "Failed to get FreeRDP file descriptor");
			break;
		}

		if (!freerdp_channels_get_fds(channels, instance, rfds, &rcount, wfds, &wcount))
		{
			WLog_ERR(TAG, "Failed to get channels file descriptor");
			break;
		}

		fds_count = 0;
		
		for (index = 0; index < rcount; index++)
			fds[fds_count++] = rfds[index];

		for (index = 0; index < wcount; index++)
			fds[fds_count++] = wfds[index];

		if (MsgWaitForMultipleObjects(fds_count, fds, FALSE, 1000, QS_ALLINPUT) == WAIT_FAILED)
		{
			WLog_ERR(TAG, "MsgWaitForMultipleObjects failure: 0x%08X", GetLastError());
			break;
		}

		if (!freerdp_check_fds(instance))
		{
			WLog_ERR(TAG, "Failed to check FreeRDP file descriptor");
			break;
		}

		if (freerdp_shall_disconnect(instance))	
		{
			break;
		}

		if (!freerdp_channels_check_fds(channels, instance))
		{
			WLog_ERR(TAG, "Failed to check channels file descriptor");
			break;
		}
	}

	freerdp_free(instance);

	ExitThread(0);
	return NULL;
}
Example #4
0
int wfreerdp_run(freerdp* instance)
{
	MSG msg;
	int index;
	int rcount;
	int wcount;
	BOOL msg_ret;
	int quit_msg;
	void* rfds[32];
	void* wfds[32];
	int fds_count;
	HANDLE fds[64];
	rdpChannels* channels;

	memset(rfds, 0, sizeof(rfds));
	memset(wfds, 0, sizeof(wfds));

	if (freerdp_connect(instance) != TRUE)
		return 0;

	channels = instance->context->channels;

	while (1)
	{
		rcount = 0;
		wcount = 0;

		if (freerdp_get_fds(instance, rfds, &rcount, wfds, &wcount) != TRUE)
		{
			printf("Failed to get FreeRDP file descriptor\n");
			break;
		}
		if (wf_get_fds(instance, rfds, &rcount, wfds, &wcount) != TRUE)
		{
			printf("Failed to get wfreerdp file descriptor\n");
			break;
		}
		if (freerdp_channels_get_fds(channels, instance, rfds, &rcount, wfds, &wcount) != TRUE)
		{
			printf("Failed to get channel manager file descriptor\n");
			break;
		}

		fds_count = 0;
		/* setup read fds */
		for (index = 0; index < rcount; index++)
		{
			fds[fds_count++] = rfds[index];
		}
		/* setup write fds */
		for (index = 0; index < wcount; index++)
		{
			fds[fds_count++] = wfds[index];
		}
		/* exit if nothing to do */
		if (fds_count == 0)
		{
			printf("wfreerdp_run: fds_count is zero\n");
			break;
		}

		/* do the wait */
		if (MsgWaitForMultipleObjects(fds_count, fds, FALSE, 1000, QS_ALLINPUT) == WAIT_FAILED)
		{
			printf("wfreerdp_run: WaitForMultipleObjects failed: 0x%04X\n", GetLastError());
			break;
		}

		if (freerdp_check_fds(instance) != TRUE)
		{
			printf("Failed to check FreeRDP file descriptor\n");
			break;
		}
		if (freerdp_shall_disconnect(instance))	
		{
			break;
		}
		if (wf_check_fds(instance) != TRUE)
		{
			printf("Failed to check wfreerdp file descriptor\n");
			break;
		}
		if (freerdp_channels_check_fds(channels, instance) != TRUE)
		{
			printf("Failed to check channel manager file descriptor\n");
			break;
		}
		wf_process_channel_event(channels, instance);

		quit_msg = FALSE;
		while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE))
		{
			msg_ret = GetMessage(&msg, NULL, 0, 0);

			if (msg_ret == 0 || msg_ret == -1)
			{
				quit_msg = TRUE;
				break;
			}

			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}

		if (quit_msg)
			break;
	}

	/* cleanup */

	freerdp_channels_close(channels, instance);
	freerdp_channels_free(channels);
	freerdp_disconnect(instance);
	
	return 0;
}
Example #5
0
int dfreerdp_run(freerdp* instance)
{
	int i;
	int fds;
	int max_fds;
	int rcount;
	int wcount;
	void* rfds[32];
	void* wfds[32];
	fd_set rfds_set;
	fd_set wfds_set;
	dfInfo* dfi;
	dfContext* context;
	rdpChannels* channels;

	ZeroMemory(rfds, sizeof(rfds));
	ZeroMemory(wfds, sizeof(wfds));

	if (!freerdp_connect(instance))
		return 0;

	context = (dfContext*) instance->context;

	dfi = context->dfi;
	channels = instance->context->channels;

	while (1)
	{
		rcount = 0;
		wcount = 0;

		if (freerdp_get_fds(instance, rfds, &rcount, wfds, &wcount) != TRUE)
		{
			fprintf(stderr, "Failed to get FreeRDP file descriptor\n");
			break;
		}
		if (freerdp_channels_get_fds(channels, instance, rfds, &rcount, wfds, &wcount) != TRUE)
		{
			fprintf(stderr, "Failed to get channel manager file descriptor\n");
			break;
		}
		if (df_get_fds(instance, rfds, &rcount, wfds, &wcount) != TRUE)
		{
			fprintf(stderr, "Failed to get dfreerdp file descriptor\n");
			break;
		}

		max_fds = 0;
		FD_ZERO(&rfds_set);
		FD_ZERO(&wfds_set);

		for (i = 0; i < rcount; i++)
		{
			fds = (int)(long)(rfds[i]);

			if (fds > max_fds)
				max_fds = fds;

			FD_SET(fds, &rfds_set);
		}

		if (max_fds == 0)
			break;

		if (select(max_fds + 1, &rfds_set, &wfds_set, NULL, NULL) == -1)
		{
			/* these are not really errors */
			if (!((errno == EAGAIN) ||
				(errno == EWOULDBLOCK) ||
				(errno == EINPROGRESS) ||
				(errno == EINTR))) /* signal occurred */
			{
				fprintf(stderr, "dfreerdp_run: select failed\n");
				break;
			}
		}

		if (freerdp_check_fds(instance) != TRUE)
		{
			fprintf(stderr, "Failed to check FreeRDP file descriptor\n");
			break;
		}
		if (df_check_fds(instance, &rfds_set) != TRUE)
		{
			fprintf(stderr, "Failed to check dfreerdp file descriptor\n");
			break;
		}
		if (freerdp_channels_check_fds(channels, instance) != TRUE)
		{
			fprintf(stderr, "Failed to check channel manager file descriptor\n");
			break;
		}
		df_process_channel_event(channels, instance);
	}

	freerdp_channels_close(channels, instance);
	freerdp_channels_free(channels);
	df_free(dfi);
	gdi_free(instance);
	freerdp_disconnect(instance);
	freerdp_free(instance);

	return 0;
}
Example #6
0
static void remmina_rdp_main_loop(RemminaProtocolWidget* gp)
{
	int i;
	int fds;
	int rcount;
	int wcount;
	int max_fds;
	void *rfds[32];
	void *wfds[32];
	fd_set rfds_set;
	fd_set wfds_set;
	rfContext* rfi;
	wMessage* event;

	rdpChannels *channels;


	memset(rfds, 0, sizeof(rfds));
	memset(wfds, 0, sizeof(wfds));

	rfi = GET_DATA(gp);
	channels = rfi->instance->context->channels;

	while (!freerdp_shall_disconnect(rfi->instance))
	{
		rcount = 0;
		wcount = 0;

		if (!freerdp_get_fds(rfi->instance, rfds, &rcount, wfds, &wcount))
		{
			break;
		}
		if (!freerdp_channels_get_fds(channels, rfi->instance, rfds, &rcount, wfds, &wcount))
		{
			break;
		}
		rf_get_fds(gp, rfds, &rcount);

		max_fds = 0;
		FD_ZERO(&rfds_set);
		for (i = 0; i < rcount; i++)
		{
			fds = (int) (UINT64) (rfds[i]);

			if (fds > max_fds)
				max_fds = fds;

			FD_SET(fds, &rfds_set);
		}

		FD_ZERO(&wfds_set);
		for (i = 0; i < wcount; i++)
		{
			fds = GPOINTER_TO_INT(wfds[i]);

			if (fds > max_fds)
				max_fds = fds;

			FD_SET(fds, &wfds_set);
		}

		/* exit if nothing to do */
		if (max_fds == 0)
		{
			break;
		}

		/* do the wait */
		if (select(max_fds + 1, &rfds_set, &wfds_set, NULL, NULL) == -1)
		{
			/* these are not really errors */
			if (!((errno == EAGAIN) ||
				(errno == EWOULDBLOCK) ||
				(errno == EINPROGRESS) ||
				(errno == EINTR))) /* signal occurred */
			{
				break;
			}
		}

		/* check the libfreerdp fds */
		if (!freerdp_check_fds(rfi->instance))
		{
			break;
		}
		/* check channel fds */
		if (!freerdp_channels_check_fds(channels, rfi->instance))
		{
			break;
		}
		else
		{
			event = freerdp_channels_pop_event(channels);
			if (event)
				remmina_rdp_channels_process_event(gp, event);
		}
		/* check ui */
		if (!rf_check_fds(gp))
		{
			break;
		}
	}
}
Example #7
0
/**
 * Connects to an RDP server as described by the guac_rdp_settings structure
 * associated with the given client, allocating and freeing all objects
 * directly related to the RDP connection. It is expected that all objects
 * which are independent of FreeRDP's state (the clipboard, display update
 * management, etc.) will already be allocated and associated with the
 * guac_rdp_client associated with the given guac_client. This function blocks
 * for the duration of the RDP session, returning only after the session has
 * completely disconnected.
 *
 * @param client
 *     The guac_client associated with the RDP settings describing the
 *     connection that should be established.
 *
 * @return
 *     Zero if the connection successfully terminated and a reconnect is
 *     desired, non-zero if an error occurs or the connection was disconnected
 *     and a reconnect is NOT desired.
 */
static int guac_rdp_handle_connection(guac_client* client) {

    guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
    guac_rdp_settings* settings = rdp_client->settings;

    /* Init random number generator */
    srandom(time(NULL));

    /* Set up screen recording, if requested */
    if (settings->recording_path != NULL) {
        rdp_client->recording = guac_common_recording_create(client,
                settings->recording_path,
                settings->recording_name,
                settings->create_recording_path,
                !settings->recording_exclude_output,
                !settings->recording_exclude_mouse,
                settings->recording_include_keys);
    }

    /* Create display */
    rdp_client->display = guac_common_display_alloc(client,
            rdp_client->settings->width,
            rdp_client->settings->height);

    rdp_client->current_surface = rdp_client->display->default_surface;

    rdp_client->requested_clipboard_format = CB_FORMAT_TEXT;
    rdp_client->available_svc = guac_common_list_alloc();

#ifdef HAVE_FREERDP_CHANNELS_GLOBAL_INIT
    freerdp_channels_global_init();
#endif

    /* Init client */
    freerdp* rdp_inst = freerdp_new();
    rdp_inst->PreConnect = rdp_freerdp_pre_connect;
    rdp_inst->PostConnect = rdp_freerdp_post_connect;
    rdp_inst->Authenticate = rdp_freerdp_authenticate;
    rdp_inst->VerifyCertificate = rdp_freerdp_verify_certificate;
    rdp_inst->ReceiveChannelData = __guac_receive_channel_data;

    /* Allocate FreeRDP context */
#ifdef LEGACY_FREERDP
    rdp_inst->context_size = sizeof(rdp_freerdp_context);
#else
    rdp_inst->ContextSize = sizeof(rdp_freerdp_context);
#endif
    rdp_inst->ContextNew  = (pContextNew) rdp_freerdp_context_new;
    rdp_inst->ContextFree = (pContextFree) rdp_freerdp_context_free;

    freerdp_context_new(rdp_inst);
    ((rdp_freerdp_context*) rdp_inst->context)->client = client;

    /* Load keymap into client */
    rdp_client->keyboard = guac_rdp_keyboard_alloc(client,
            settings->server_layout);

    /* Set default pointer */
    guac_common_cursor_set_pointer(rdp_client->display->cursor);

    /* Push desired settings to FreeRDP */
    guac_rdp_push_settings(client, settings, rdp_inst);

    /* Connect to RDP server */
    if (!freerdp_connect(rdp_inst)) {
        guac_client_abort(client, GUAC_PROTOCOL_STATUS_UPSTREAM_NOT_FOUND,
                "Error connecting to RDP server");
        return 1;
    }

    /* Connection complete */
    rdp_client->rdp_inst = rdp_inst;
    rdpChannels* channels = rdp_inst->context->channels;

    guac_timestamp last_frame_end = guac_timestamp_current();

    /* Signal that reconnect has been completed */
    guac_rdp_disp_reconnect_complete(rdp_client->disp);

    /* Handle messages from RDP server while client is running */
    while (client->state == GUAC_CLIENT_RUNNING
            && !guac_rdp_disp_reconnect_needed(rdp_client->disp)) {

        /* Update remote display size */
        pthread_mutex_lock(&(rdp_client->rdp_lock));
        guac_rdp_disp_update_size(rdp_client->disp, settings, rdp_inst);
        pthread_mutex_unlock(&(rdp_client->rdp_lock));

        /* Wait for data and construct a reasonable frame */
        int wait_result = rdp_guac_client_wait_for_messages(client,
                GUAC_RDP_FRAME_START_TIMEOUT);
        if (wait_result > 0) {

            int processing_lag = guac_client_get_processing_lag(client);
            guac_timestamp frame_start = guac_timestamp_current();

            /* Read server messages until frame is built */
            do {

                guac_timestamp frame_end;
                int frame_remaining;

                pthread_mutex_lock(&(rdp_client->rdp_lock));

                /* Check the libfreerdp fds */
                if (!freerdp_check_fds(rdp_inst)
                        || !freerdp_channels_check_fds(channels, rdp_inst)) {

                    /* Flag connection failure */
                    wait_result = -1;
                    pthread_mutex_unlock(&(rdp_client->rdp_lock));
                    break;

                }

                /* Check for channel events */
                wMessage* event = freerdp_channels_pop_event(channels);
                if (event) {

                    /* Handle channel events (clipboard and RAIL) */
#ifdef LEGACY_EVENT
                    if (event->event_class == CliprdrChannel_Class)
                        guac_rdp_process_cliprdr_event(client, event);
                    else if (event->event_class == RailChannel_Class)
                        guac_rdp_process_rail_event(client, event);
#else
                    if (GetMessageClass(event->id) == CliprdrChannel_Class)
                        guac_rdp_process_cliprdr_event(client, event);
                    else if (GetMessageClass(event->id) == RailChannel_Class)
                        guac_rdp_process_rail_event(client, event);
#endif

                    freerdp_event_free(event);

                }

                pthread_mutex_unlock(&(rdp_client->rdp_lock));

                /* Calculate time remaining in frame */
                frame_end = guac_timestamp_current();
                frame_remaining = frame_start + GUAC_RDP_FRAME_DURATION
                                - frame_end;

                /* Calculate time that client needs to catch up */
                int time_elapsed = frame_end - last_frame_end;
                int required_wait = processing_lag - time_elapsed;

                /* Increase the duration of this frame if client is lagging */
                if (required_wait > GUAC_RDP_FRAME_TIMEOUT)
                    wait_result = rdp_guac_client_wait_for_messages(client,
                            required_wait);

                /* Wait again if frame remaining */
                else if (frame_remaining > 0)
                    wait_result = rdp_guac_client_wait_for_messages(client,
                            GUAC_RDP_FRAME_TIMEOUT);
                else
                    break;

            } while (wait_result > 0);

            /* Record end of frame, excluding server-side rendering time (we
             * assume server-side rendering time will be consistent between any
             * two subsequent frames, and that this time should thus be
             * excluded from the required wait period of the next frame). */
            last_frame_end = frame_start;

        }

        /* Test whether the RDP server is closing the connection */
        pthread_mutex_lock(&(rdp_client->rdp_lock));
        int connection_closing = freerdp_shall_disconnect(rdp_inst);
        pthread_mutex_unlock(&(rdp_client->rdp_lock));

        /* Close connection cleanly if server is disconnecting */
        if (connection_closing)
            guac_rdp_client_abort(client);

        /* If a low-level connection error occurred, fail */
        else if (wait_result < 0)
            guac_client_abort(client, GUAC_PROTOCOL_STATUS_UPSTREAM_UNAVAILABLE,
                    "Connection closed.");

        /* Flush frame only if successful */
        else {
            guac_common_display_flush(rdp_client->display);
            guac_client_end_frame(client);
            guac_socket_flush(client->socket);
        }

    }

    /* Clean up print job, if active */
    if (rdp_client->active_job != NULL) {
        guac_rdp_print_job_kill(rdp_client->active_job);
        guac_rdp_print_job_free(rdp_client->active_job);
    }

    pthread_mutex_lock(&(rdp_client->rdp_lock));

    /* Disconnect client and channels */
    freerdp_channels_close(channels, rdp_inst);
    freerdp_channels_free(channels);
    freerdp_disconnect(rdp_inst);

    /* Clean up RDP client context */
    freerdp_clrconv_free(((rdp_freerdp_context*) rdp_inst->context)->clrconv);
    cache_free(rdp_inst->context->cache);
    freerdp_context_free(rdp_inst);

    /* Clean up RDP client */
    freerdp_free(rdp_inst);
    rdp_client->rdp_inst = NULL;

    /* Free SVC list */
    guac_common_list_free(rdp_client->available_svc);

    /* Free RDP keyboard state */
    guac_rdp_keyboard_free(rdp_client->keyboard);

    /* Free display */
    guac_common_display_free(rdp_client->display);

    pthread_mutex_unlock(&(rdp_client->rdp_lock));

    /* Client is now disconnected */
    guac_client_log(client, GUAC_LOG_INFO, "Internal RDP client disconnected");

    return 0;

}
Example #8
0
int wlfreerdp_run(freerdp* instance)
{
	int i;
	int fds;
	int max_fds;
	int rcount;
	int wcount;
	void* rfds[32];
	void* wfds[32];
	fd_set rfds_set;
	fd_set wfds_set;

	ZeroMemory(rfds, sizeof(rfds));
	ZeroMemory(wfds, sizeof(wfds));

	freerdp_connect(instance);

	while (1)
	{
		rcount = 0;
		wcount = 0;
		if (freerdp_get_fds(instance, rfds, &rcount, wfds, &wcount) != TRUE)
		{
			printf("Failed to get FreeRDP file descriptor");
			break;
		}
		if (freerdp_channels_get_fds(instance->context->channels, instance, rfds, &rcount, wfds, &wcount) != TRUE)
		{
			printf("Failed to get FreeRDP file descriptor");
			break;
		}

		max_fds = 0;
		FD_ZERO(&rfds_set);
		FD_ZERO(&wfds_set);

		for (i = 0; i < rcount; i++)
		{
			fds = (int)(long)(rfds[i]);

			if (fds > max_fds)
				max_fds = fds;

			FD_SET(fds, &rfds_set);
		}

		if (max_fds == 0)
			break;

		if (select(max_fds + 1, &rfds_set, &wfds_set, NULL, NULL) == -1)
		{
			if (!((errno == EAGAIN) ||
				(errno == EWOULDBLOCK) ||
				(errno == EINPROGRESS) ||
				(errno == EINTR)))
			{
				printf("wlfreerdp_run: select failed\n");
				break;
			}
		}

		if (freerdp_check_fds(instance) != TRUE)
		{
			printf("Failed to check FreeRDP file descriptor\n");
			break;
		}
		if (freerdp_channels_check_fds(instance->context->channels, instance) != TRUE)
		{
			printf("Failed to check channel manager file descriptor\n");
			break;
		}
	}

	struct display* display;
	struct window* window;
	struct wl_context* context;

	context = (struct wl_context*) instance->context;
	display = context->display;
	window = context->window;
	free(window->buffers[0].shm_data);
	free(window->buffers[1].shm_data);
	free(window->data);

	wl_buffer_destroy(window->buffers[0].buffer);
	wl_buffer_destroy(window->buffers[1].buffer);
	wl_shell_surface_destroy(window->shell_surface);
	wl_surface_destroy(window->surface);
	wl_shm_destroy(display->shm);
	wl_shell_destroy(display->shell);
	wl_compositor_destroy(display->compositor);
	wl_registry_destroy(display->registry);
	wl_display_disconnect(display->display);

	freerdp_channels_close(instance->context->channels, instance);
	freerdp_channels_free(instance->context->channels);
	freerdp_free(instance);

	return 0;
}
static int rdp_guac_client_wait_for_messages(guac_client* client, int timeout_usecs) {

    rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
    freerdp* rdp_inst = guac_client_data->rdp_inst;
    rdpChannels* channels = rdp_inst->context->channels;

    int result;
    int index;
    int max_fd, fd;
    void* read_fds[32];
    void* write_fds[32];
    int read_count = 0;
    int write_count = 0;
    fd_set rfds, wfds;

    struct timeval timeout = {
        .tv_sec  = 0,
        .tv_usec = timeout_usecs
    };

    /* Get RDP fds */
    if (!freerdp_get_fds(rdp_inst, read_fds, &read_count, write_fds, &write_count)) {
        guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Unable to read RDP file descriptors.");
        return -1;
    }

    /* Get channel fds */
    if (!freerdp_channels_get_fds(channels, rdp_inst, read_fds, &read_count, write_fds,
                &write_count)) {
        guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Unable to read RDP channel file descriptors.");
        return -1;
    }

    /* Construct read fd_set */
    max_fd = 0;
    FD_ZERO(&rfds);
    for (index = 0; index < read_count; index++) {
        fd = (int)(long) (read_fds[index]);
        if (fd > max_fd)
            max_fd = fd;
        FD_SET(fd, &rfds);
    }

    /* Construct write fd_set */
    FD_ZERO(&wfds);
    for (index = 0; index < write_count; index++) {
        fd = (int)(long) (write_fds[index]);
        if (fd > max_fd)
            max_fd = fd;
        FD_SET(fd, &wfds);
    }

    /* If no file descriptors, error */
    if (max_fd == 0) {
        guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "No file descriptors associated with RDP connection.");
        return -1;
    }

    /* Wait for all RDP file descriptors */
    result = select(max_fd + 1, &rfds, &wfds, NULL, &timeout);
    if (result < 0) {

        /* If error ignorable, pretend timout occurred */
        if (errno == EAGAIN
            || errno == EWOULDBLOCK
            || errno == EINPROGRESS
            || errno == EINTR)
            return 0;

        /* Otherwise, return as error */
        guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Error waiting for file descriptor.");
        return -1;

    }

    /* Return wait result */
    return result;

}

int rdp_guac_client_handle_messages(guac_client* client) {

    rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
    freerdp* rdp_inst = guac_client_data->rdp_inst;
    rdpChannels* channels = rdp_inst->context->channels;
    wMessage* event;

    /* Wait for messages */
    int wait_result = rdp_guac_client_wait_for_messages(client, 250000);
    guac_timestamp frame_start = guac_timestamp_current();
    while (wait_result > 0) {

        guac_timestamp frame_end;
        int frame_remaining;

        pthread_mutex_lock(&(guac_client_data->rdp_lock));

        /* Check the libfreerdp fds */
        if (!freerdp_check_fds(rdp_inst)) {
            guac_error = GUAC_STATUS_BAD_STATE;
            guac_error_message = "Error handling RDP file descriptors";
            pthread_mutex_unlock(&(guac_client_data->rdp_lock));
            return 1;
        }

        /* Check channel fds */
        if (!freerdp_channels_check_fds(channels, rdp_inst)) {
            guac_error = GUAC_STATUS_BAD_STATE;
            guac_error_message = "Error handling RDP channel file descriptors";
            pthread_mutex_unlock(&(guac_client_data->rdp_lock));
            return 1;
        }

        /* Check for channel events */
        event = freerdp_channels_pop_event(channels);
        if (event) {

            /* Handle channel events (clipboard and RAIL) */
#ifdef LEGACY_EVENT
            if (event->event_class == CliprdrChannel_Class)
                guac_rdp_process_cliprdr_event(client, event);
            else if (event->event_class == RailChannel_Class)
                guac_rdp_process_rail_event(client, event);
#else
            if (GetMessageClass(event->id) == CliprdrChannel_Class)
                guac_rdp_process_cliprdr_event(client, event);
            else if (GetMessageClass(event->id) == RailChannel_Class)
                guac_rdp_process_rail_event(client, event);
#endif

            freerdp_event_free(event);

        }

        /* Handle RDP disconnect */
        if (freerdp_shall_disconnect(rdp_inst)) {
            guac_error = GUAC_STATUS_NO_INPUT;
            guac_error_message = "RDP server closed connection";
            pthread_mutex_unlock(&(guac_client_data->rdp_lock));
            return 1;
        }

        pthread_mutex_unlock(&(guac_client_data->rdp_lock));

        /* Calculate time remaining in frame */
        frame_end = guac_timestamp_current();
        frame_remaining = frame_start + GUAC_RDP_FRAME_DURATION - frame_end;

        /* Wait again if frame remaining */
        if (frame_remaining > 0)
            wait_result = rdp_guac_client_wait_for_messages(client,
                    GUAC_RDP_FRAME_TIMEOUT*1000);
        else
            break;

    }

    /* If an error occurred, fail */
    if (wait_result < 0)
        return 1;

    /* Success */
    guac_common_surface_flush(guac_client_data->default_surface);
    return 0;

}
Example #10
0
/**
 * Waits for messages from the RDP server for the given number of microseconds.
 *
 * @param client
 *     The client associated with the current RDP session.
 *
 * @param timeout_usecs
 *     The maximum amount of time to wait, in microseconds.
 *
 * @return
 *     A positive value if messages are ready, zero if the specified timeout
 *     period elapsed, or a negative value if an error occurs.
 */
static int rdp_guac_client_wait_for_messages(guac_client* client,
        int timeout_usecs) {

    guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
    freerdp* rdp_inst = rdp_client->rdp_inst;
    rdpChannels* channels = rdp_inst->context->channels;

    int result;
    int index;
    int max_fd, fd;
    void* read_fds[32];
    void* write_fds[32];
    int read_count = 0;
    int write_count = 0;
    fd_set rfds, wfds;

    struct timeval timeout = {
        .tv_sec  = 0,
        .tv_usec = timeout_usecs
    };

    /* Get RDP fds */
    if (!freerdp_get_fds(rdp_inst, read_fds, &read_count, write_fds, &write_count)) {
        guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Unable to read RDP file descriptors.");
        return -1;
    }

    /* Get channel fds */
    if (!freerdp_channels_get_fds(channels, rdp_inst, read_fds, &read_count, write_fds,
                &write_count)) {
        guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Unable to read RDP channel file descriptors.");
        return -1;
    }

    /* Construct read fd_set */
    max_fd = 0;
    FD_ZERO(&rfds);
    for (index = 0; index < read_count; index++) {
        fd = (int)(long) (read_fds[index]);
        if (fd > max_fd)
            max_fd = fd;
        FD_SET(fd, &rfds);
    }

    /* Construct write fd_set */
    FD_ZERO(&wfds);
    for (index = 0; index < write_count; index++) {
        fd = (int)(long) (write_fds[index]);
        if (fd > max_fd)
            max_fd = fd;
        FD_SET(fd, &wfds);
    }

    /* If no file descriptors, error */
    if (max_fd == 0) {
        guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "No file descriptors associated with RDP connection.");
        return -1;
    }

    /* Wait for all RDP file descriptors */
    result = select(max_fd + 1, &rfds, &wfds, NULL, &timeout);
    if (result < 0) {

        /* If error ignorable, pretend timout occurred */
        if (errno == EAGAIN
            || errno == EWOULDBLOCK
            || errno == EINPROGRESS
            || errno == EINTR)
            return 0;

        /* Otherwise, return as error */
        guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Error waiting for file descriptor.");
        return -1;

    }

    /* Return wait result */
    return result;

}

/**
 * Connects to an RDP server as described by the guac_rdp_settings structure
 * associated with the given client, allocating and freeing all objects
 * directly related to the RDP connection. It is expected that all objects
 * which are independent of FreeRDP's state (the clipboard, display update
 * management, etc.) will already be allocated and associated with the
 * guac_rdp_client associated with the given guac_client. This function blocks
 * for the duration of the RDP session, returning only after the session has
 * completely disconnected.
 *
 * @param client
 *     The guac_client associated with the RDP settings describing the
 *     connection that should be established.
 *
 * @return
 *     Zero if the connection successfully terminated and a reconnect is
 *     desired, non-zero if an error occurs or the connection was disconnected
 *     and a reconnect is NOT desired.
 */
static int guac_rdp_handle_connection(guac_client* client) {

    guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
    guac_rdp_settings* settings = rdp_client->settings;

    /* Init random number generator */
    srandom(time(NULL));

    /* Set up screen recording, if requested */
    if (settings->recording_path != NULL) {
        guac_common_recording_create(client,
                settings->recording_path,
                settings->recording_name,
                settings->create_recording_path);
    }

    /* Create display */
    rdp_client->display = guac_common_display_alloc(client,
            rdp_client->settings->width,
            rdp_client->settings->height);

    rdp_client->current_surface = rdp_client->display->default_surface;

    rdp_client->requested_clipboard_format = CB_FORMAT_TEXT;
    rdp_client->available_svc = guac_common_list_alloc();

#ifdef HAVE_FREERDP_CHANNELS_GLOBAL_INIT
    freerdp_channels_global_init();
#endif

    /* Init client */
    freerdp* rdp_inst = freerdp_new();
    rdp_inst->PreConnect = rdp_freerdp_pre_connect;
    rdp_inst->PostConnect = rdp_freerdp_post_connect;
    rdp_inst->Authenticate = rdp_freerdp_authenticate;
    rdp_inst->VerifyCertificate = rdp_freerdp_verify_certificate;
    rdp_inst->ReceiveChannelData = __guac_receive_channel_data;

    /* Allocate FreeRDP context */
#ifdef LEGACY_FREERDP
    rdp_inst->context_size = sizeof(rdp_freerdp_context);
#else
    rdp_inst->ContextSize = sizeof(rdp_freerdp_context);
#endif
    rdp_inst->ContextNew  = (pContextNew) rdp_freerdp_context_new;
    rdp_inst->ContextFree = (pContextFree) rdp_freerdp_context_free;

    freerdp_context_new(rdp_inst);
    ((rdp_freerdp_context*) rdp_inst->context)->client = client;

    /* Load keymap into client */
    __guac_rdp_client_load_keymap(client, settings->server_layout);

    /* Send connection name */
    guac_protocol_send_name(client->socket, settings->hostname);

    /* Set default pointer */
    guac_common_cursor_set_pointer(rdp_client->display->cursor);

    /* Push desired settings to FreeRDP */
    guac_rdp_push_settings(settings, rdp_inst);

    /* Connect to RDP server */
    if (!freerdp_connect(rdp_inst)) {
        guac_client_abort(client, GUAC_PROTOCOL_STATUS_UPSTREAM_ERROR,
                "Error connecting to RDP server");
        return 1;
    }

    /* Connection complete */
    rdp_client->rdp_inst = rdp_inst;
    rdpChannels* channels = rdp_inst->context->channels;

    guac_timestamp last_frame_end = guac_timestamp_current();

    /* Signal that reconnect has been completed */
    guac_rdp_disp_reconnect_complete(rdp_client->disp);

    /* Handle messages from RDP server while client is running */
    while (client->state == GUAC_CLIENT_RUNNING
            && !guac_rdp_disp_reconnect_needed(rdp_client->disp)) {

        /* Update remote display size */
        pthread_mutex_lock(&(rdp_client->rdp_lock));
        guac_rdp_disp_update_size(rdp_client->disp, settings, rdp_inst);
        pthread_mutex_unlock(&(rdp_client->rdp_lock));

        /* Wait for data and construct a reasonable frame */
        int wait_result = rdp_guac_client_wait_for_messages(client,
                GUAC_RDP_FRAME_START_TIMEOUT);
        if (wait_result > 0) {

            int processing_lag = guac_client_get_processing_lag(client);
            guac_timestamp frame_start = guac_timestamp_current();

            /* Read server messages until frame is built */
            do {

                guac_timestamp frame_end;
                int frame_remaining;

                pthread_mutex_lock(&(rdp_client->rdp_lock));

                /* Check the libfreerdp fds */
                if (!freerdp_check_fds(rdp_inst)) {
                    guac_client_abort(client,
                            GUAC_PROTOCOL_STATUS_SERVER_ERROR,
                            "Error handling RDP file descriptors");
                    pthread_mutex_unlock(&(rdp_client->rdp_lock));
                    return 1;
                }

                /* Check channel fds */
                if (!freerdp_channels_check_fds(channels, rdp_inst)) {
                    guac_client_abort(client,
                            GUAC_PROTOCOL_STATUS_SERVER_ERROR,
                            "Error handling RDP channel file descriptors");
                    pthread_mutex_unlock(&(rdp_client->rdp_lock));
                    return 1;
                }

                /* Check for channel events */
                wMessage* event = freerdp_channels_pop_event(channels);
                if (event) {

                    /* Handle channel events (clipboard and RAIL) */
#ifdef LEGACY_EVENT
                    if (event->event_class == CliprdrChannel_Class)
                        guac_rdp_process_cliprdr_event(client, event);
                    else if (event->event_class == RailChannel_Class)
                        guac_rdp_process_rail_event(client, event);
#else
                    if (GetMessageClass(event->id) == CliprdrChannel_Class)
                        guac_rdp_process_cliprdr_event(client, event);
                    else if (GetMessageClass(event->id) == RailChannel_Class)
                        guac_rdp_process_rail_event(client, event);
#endif

                    freerdp_event_free(event);

                }

                /* Handle RDP disconnect */
                if (freerdp_shall_disconnect(rdp_inst)) {
                    guac_client_stop(client);
                    guac_client_log(client, GUAC_LOG_INFO,
                            "RDP server closed connection");
                    pthread_mutex_unlock(&(rdp_client->rdp_lock));
                    return 1;
                }

                pthread_mutex_unlock(&(rdp_client->rdp_lock));

                /* Calculate time remaining in frame */
                frame_end = guac_timestamp_current();
                frame_remaining = frame_start + GUAC_RDP_FRAME_DURATION
                                - frame_end;

                /* Calculate time that client needs to catch up */
                int time_elapsed = frame_end - last_frame_end;
                int required_wait = processing_lag - time_elapsed;

                /* Increase the duration of this frame if client is lagging */
                if (required_wait > GUAC_RDP_FRAME_TIMEOUT)
                    wait_result = rdp_guac_client_wait_for_messages(client,
                            required_wait*1000);

                /* Wait again if frame remaining */
                else if (frame_remaining > 0)
                    wait_result = rdp_guac_client_wait_for_messages(client,
                            GUAC_RDP_FRAME_TIMEOUT*1000);
                else
                    break;

            } while (wait_result > 0);
        }

        /* If an error occurred, fail */
        if (wait_result < 0)
            guac_client_abort(client, GUAC_PROTOCOL_STATUS_UPSTREAM_ERROR,
                    "Connection closed.");

        /* End of frame */
        guac_common_display_flush(rdp_client->display);
        guac_client_end_frame(client);
        guac_socket_flush(client->socket);

        /* Record end of frame */
        last_frame_end = guac_timestamp_current();

    }

    /* Kill client and finish connection */
    guac_client_stop(client);
    guac_client_log(client, GUAC_LOG_INFO, "Internal RDP client disconnected");

    pthread_mutex_lock(&(rdp_client->rdp_lock));

    /* Disconnect client and channels */
    freerdp_channels_close(channels, rdp_inst);
    freerdp_channels_free(channels);
    freerdp_disconnect(rdp_inst);

    /* Clean up RDP client context */
    freerdp_clrconv_free(((rdp_freerdp_context*) rdp_inst->context)->clrconv);
    cache_free(rdp_inst->context->cache);
    freerdp_context_free(rdp_inst);

    /* Clean up RDP client */
    freerdp_free(rdp_inst);
    rdp_client->rdp_inst = NULL;

    /* Free SVC list */
    guac_common_list_free(rdp_client->available_svc);

    /* Free display */
    guac_common_display_free(rdp_client->display);

    pthread_mutex_unlock(&(rdp_client->rdp_lock));
    return 0;

}
Example #11
0
void* tf_client_thread_proc(freerdp* instance)
{
	int i;
	int fds;
	int max_fds;
	int rcount;
	int wcount;
	void* rfds[32];
	void* wfds[32];
	fd_set rfds_set;
	fd_set wfds_set;
	rdpChannels* channels;

	channels = instance->context->channels;

	freerdp_connect(instance);

	while (1)
	{
		rcount = 0;
		wcount = 0;

		ZeroMemory(rfds, sizeof(rfds));
		ZeroMemory(wfds, sizeof(wfds));

		if (!freerdp_get_fds(instance, rfds, &rcount, wfds, &wcount))
		{
			WLog_ERR(TAG, "Failed to get FreeRDP file descriptor");
			break;
		}

		if (!freerdp_channels_get_fds(channels, instance, rfds, &rcount, wfds, &wcount))
		{
			WLog_ERR(TAG, "Failed to get channel manager file descriptor");
			break;
		}

		max_fds = 0;
		FD_ZERO(&rfds_set);
		FD_ZERO(&wfds_set);

		for (i = 0; i < rcount; i++)
		{
			fds = (int)(long)(rfds[i]);

			if (fds > max_fds)
				max_fds = fds;

			FD_SET(fds, &rfds_set);
		}

		if (max_fds == 0)
			break;

		if (select(max_fds + 1, &rfds_set, &wfds_set, NULL, NULL) == -1)
		{
			/* these are not really errors */
			if (!((errno == EAGAIN) ||
				(errno == EWOULDBLOCK) ||
				(errno == EINPROGRESS) ||
				(errno == EINTR))) /* signal occurred */
			{
				WLog_ERR(TAG, "tfreerdp_run: select failed");
				break;
			}
		}

		if (!freerdp_check_fds(instance))
		{
			WLog_ERR(TAG, "Failed to check FreeRDP file descriptor");
			break;
		}

		if (!freerdp_channels_check_fds(channels, instance))
		{
			WLog_ERR(TAG, "Failed to check channel manager file descriptor");
			break;
		}
	}

	freerdp_channels_close(channels, instance);
	freerdp_channels_free(channels);
	freerdp_free(instance);

	ExitThread(0);
	return NULL;
}