int rdp_client_connect_demand_active(rdpRdp* rdp, wStream* s)
{
BYTE* mark;
UINT16 width;
UINT16 height;
width = rdp->settings->DesktopWidth;
height = rdp->settings->DesktopHeight;
Stream_GetPointer(s, mark);
if (!rdp_recv_demand_active(rdp, s))
{
UINT16 channelId;
Stream_SetPointer(s, mark);
rdp_recv_get_active_header(rdp, s, &channelId);
/* Was Stream_Seek(s, RDP_PACKET_HEADER_MAX_LENGTH);
* but the headers aren't always that length,
* so that could result in a bad offset.
*/
return rdp_recv_out_of_sequence_pdu(rdp, s);
}
if (freerdp_shall_disconnect(rdp->instance))
return 0;
if (!rdp_send_confirm_active(rdp))
return -1;
if (!input_register_client_callbacks(rdp->input))
{
WLog_ERR(TAG, "error registering client callbacks");
return -1;
}
/**
* The server may request a different desktop size during Deactivation-Reactivation sequence.
* In this case, the UI should be informed and do actual window resizing at this point.
*/
if (width != rdp->settings->DesktopWidth || height != rdp->settings->DesktopHeight)
{
BOOL status = TRUE;
IFCALLRET(rdp->update->DesktopResize, status, rdp->update->context);
if (!status)
{
WLog_ERR(TAG, "client desktop resize callback failed");
return -1;
}
}
rdp_client_transition_to_state(rdp, CONNECTION_STATE_FINALIZATION);
return rdp_client_connect_finalize(rdp);
}
int transport_check_fds(rdpTransport* transport)
{
int status;
int recv_status;
wStream* received;
HANDLE event;
if (!transport)
return -1;
while(!freerdp_shall_disconnect(transport->context->instance))
{
/**
* Note: transport_read_pdu tries to read one PDU from
* the transport layer.
* The ReceiveBuffer might have a position > 0 in case of a non blocking
* transport. If transport_read_pdu returns 0 the pdu couldn't be read at
* this point.
* Note that transport->ReceiveBuffer is replaced after each iteration
* of this loop with a fresh stream instance from a pool.
*/
if ((status = transport_read_pdu(transport, transport->ReceiveBuffer)) <= 0)
{
if (status < 0)
WLog_DBG(TAG, "transport_check_fds: transport_read_pdu() - %i", status);
return status;
}
received = transport->ReceiveBuffer;
if (!(transport->ReceiveBuffer = StreamPool_Take(transport->ReceivePool, 0)))
return -1;
/**
* status:
* -1: error
* 0: success
* 1: redirection
*/
recv_status = transport->ReceiveCallback(transport, received, transport->ReceiveExtra);
Stream_Release(received);
/* session redirection or activation */
if (recv_status == 1 || recv_status == 2)
{
return recv_status;
}
if (recv_status < 0)
{
WLog_ERR(TAG, "transport_check_fds: transport->ReceiveCallback() - %i", recv_status);
return -1;
}
}
return 0;
}
static int wlfreerdp_run(freerdp* instance)
{
DWORD count;
HANDLE handles[64];
DWORD status;
if (!freerdp_connect(instance))
{
printf("Failed to connect\n");
return -1;
}
handle_uwac_events(instance, g_display);
while (!freerdp_shall_disconnect(instance))
{
handles[0] = g_displayHandle;
count = freerdp_get_event_handles(instance->context, &handles[1], 63);
if (!count)
{
printf("Failed to get FreeRDP file descriptor\n");
break;
}
status = WaitForMultipleObjects(count+1, handles, FALSE, INFINITE);
if (WAIT_FAILED == status)
{
printf("%s: WaitForMultipleObjects failed\n", __FUNCTION__);
break;
}
if (!handle_uwac_events(instance, g_display)) {
printf("error handling UWAC events\n");
break;
}
//if (WaitForMultipleObjects(count, &handles[1], FALSE, INFINITE)) {
if (freerdp_check_event_handles(instance->context) != TRUE)
{
printf("Failed to check FreeRDP file descriptor\n");
break;
}
//}
}
freerdp_channels_disconnect(instance->context->channels, instance);
freerdp_disconnect(instance);
return 0;
}
static gboolean remmina_rdp_close_connection(RemminaProtocolWidget* gp)
{
rfContext* rfi;
freerdp* instance;
rfi = GET_DATA(gp);
instance = rfi->instance;
if (rfi->thread)
{
pthread_cancel(rfi->thread);
if (rfi->thread)
pthread_join(rfi->thread, NULL);
}
pthread_mutex_destroy(&rfi->mutex);
g_mutex_free(rfi->gmutex);
g_cond_free(rfi->gcond);
remmina_rdp_event_uninit(gp);
remmina_plugin_service->protocol_plugin_emit_signal(gp, "disconnect");
if (instance)
{
if (rfi->channels)
{
//freerdp_channels_close(rfi->channels, instance);
freerdp_channels_free(rfi->channels);
rfi->channels = NULL;
}
if (freerdp_shall_disconnect(instance))
{
freerdp_disconnect(instance);
}
}
if (rfi->rfx_context)
{
rfx_context_free(rfi->rfx_context);
rfi->rfx_context = NULL;
}
if (instance)
{
//freerdp_context_free(instance); /* context is rfContext* rfi */
freerdp_free(instance);
}
return FALSE;
}
BOOL rdp_recv_deactivate_all(rdpRdp* rdp, wStream* s)
{
UINT16 lengthSourceDescriptor;
if (rdp->state == CONNECTION_STATE_ACTIVE)
rdp->deactivation_reactivation = TRUE;
else
rdp->deactivation_reactivation = FALSE;
/*
* Windows XP can send short DEACTIVATE_ALL PDU that doesn't contain
* the following fields.
*/
if (Stream_GetRemainingLength(s) > 0)
{
do
{
if (Stream_GetRemainingLength(s) < 4)
break;
Stream_Read_UINT32(s, rdp->settings->ShareId); /* shareId (4 bytes) */
if (Stream_GetRemainingLength(s) < 2)
break;
Stream_Read_UINT16(s, lengthSourceDescriptor); /* lengthSourceDescriptor (2 bytes) */
if (Stream_GetRemainingLength(s) < lengthSourceDescriptor)
break;
Stream_Seek(s, lengthSourceDescriptor); /* sourceDescriptor (should be 0x00) */
}
while (0);
}
rdp_client_transition_to_state(rdp, CONNECTION_STATE_CAPABILITIES_EXCHANGE);
while (rdp->state != CONNECTION_STATE_ACTIVE)
{
if (rdp_check_fds(rdp) < 0)
return FALSE;
if (freerdp_shall_disconnect(rdp->instance))
break;
SwitchToThread();
}
return TRUE;
}
static DWORD WINAPI tf_client_thread_proc(LPVOID arg)
{
freerdp* instance = (freerdp*)arg;
DWORD nCount;
DWORD status;
HANDLE handles[64];
if (!freerdp_connect(instance))
{
WLog_ERR(TAG, "connection failure");
return 0;
}
while (!freerdp_shall_disconnect(instance))
{
nCount = freerdp_get_event_handles(instance->context, &handles[0], 64);
if (nCount == 0)
{
WLog_ERR(TAG, "%s: freerdp_get_event_handles failed", __FUNCTION__);
break;
}
status = WaitForMultipleObjects(nCount, handles, FALSE, 100);
if (status == WAIT_FAILED)
{
WLog_ERR(TAG, "%s: WaitForMultipleObjects failed with %"PRIu32"", __FUNCTION__,
status);
break;
}
if (!freerdp_check_event_handles(instance->context))
{
if (freerdp_get_last_error(instance->context) == FREERDP_ERROR_SUCCESS)
WLog_ERR(TAG, "Failed to check FreeRDP event handles");
break;
}
}
freerdp_disconnect(instance);
ExitThread(0);
return 0;
}
static void* tf_client_thread_proc(freerdp* instance)
{
DWORD nCount;
DWORD status;
HANDLE handles[64];
if (!freerdp_connect(instance))
{
WLog_ERR(TAG, "connection failure");
return NULL;
}
while (!freerdp_shall_disconnect(instance))
{
nCount = freerdp_get_event_handles(instance->context, &handles[0], 64);
if (nCount == 0)
{
WLog_ERR(TAG, "%s: freerdp_get_event_handles failed", __FUNCTION__);
break;
}
status = WaitForMultipleObjects(nCount, handles, FALSE, 100);
if (status == WAIT_FAILED)
{
WLog_ERR(TAG, "%s: WaitForMultipleObjects failed with %lu", __FUNCTION__,
(unsigned long) status);
break;
}
if (!freerdp_check_event_handles(instance->context))
{
WLog_ERR(TAG, "Failed to check FreeRDP event handles");
break;
}
}
freerdp_disconnect(instance);
ExitThread(0);
return NULL;
}
static int wlfreerdp_run(freerdp* instance)
{
DWORD count;
HANDLE handles[64];
DWORD status;
if (!freerdp_connect(instance))
{
printf("Failed to connect\n");
return -1;
}
while (!freerdp_shall_disconnect(instance))
{
count = freerdp_get_event_handles(instance->context, handles, 64);
if (!count)
{
printf("Failed to get FreeRDP file descriptor\n");
break;
}
status = WaitForMultipleObjects(count, handles, FALSE, INFINITE);
if (WAIT_FAILED == status)
{
printf("%s: WaitForMultipleObjects failed\n", __FUNCTION__);
break;
}
if (freerdp_check_event_handles(instance->context) != TRUE)
{
printf("Failed to check FreeRDP file descriptor\n");
break;
}
}
freerdp_channels_disconnect(instance->context->channels, instance);
freerdp_disconnect(instance);
return 0;
}
int transport_check_fds(rdpTransport* transport)
{
int status;
int recv_status;
wStream* received;
DWORD now = GetTickCount();
DWORD dueDate = 0;
if (!transport)
return -1;
dueDate = now + transport->settings->MaxTimeInCheckLoop;
if (transport->haveMoreBytesToRead)
{
transport->haveMoreBytesToRead = FALSE;
ResetEvent(transport->rereadEvent);
}
while (now < dueDate)
{
if (freerdp_shall_disconnect(transport->context->instance))
{
return -1;
}
/**
* Note: transport_read_pdu tries to read one PDU from
* the transport layer.
* The ReceiveBuffer might have a position > 0 in case of a non blocking
* transport. If transport_read_pdu returns 0 the pdu couldn't be read at
* this point.
* Note that transport->ReceiveBuffer is replaced after each iteration
* of this loop with a fresh stream instance from a pool.
*/
if ((status = transport_read_pdu(transport, transport->ReceiveBuffer)) <= 0)
{
if (status < 0)
WLog_Print(transport->log, WLOG_DEBUG, "transport_check_fds: transport_read_pdu() - %i", status);
return status;
}
received = transport->ReceiveBuffer;
if (!(transport->ReceiveBuffer = StreamPool_Take(transport->ReceivePool, 0)))
return -1;
/**
* status:
* -1: error
* 0: success
* 1: redirection
*/
recv_status = transport->ReceiveCallback(transport, received, transport->ReceiveExtra);
Stream_Release(received);
/* session redirection or activation */
if (recv_status == 1 || recv_status == 2)
{
return recv_status;
}
if (recv_status < 0)
{
WLog_Print(transport->log, WLOG_ERROR, "transport_check_fds: transport->ReceiveCallback() - %i",
recv_status);
return -1;
}
now = GetTickCount();
}
if (now >= dueDate)
{
SetEvent(transport->rereadEvent);
transport->haveMoreBytesToRead = TRUE;
}
return 0;
}
DWORD WINAPI wf_client_thread(LPVOID lpParam)
{
MSG msg;
int width;
int height;
BOOL msg_ret;
int quit_msg;
DWORD nCount;
HANDLE handles[64];
wfContext* wfc;
freerdp* instance;
rdpContext* context;
rdpChannels* channels;
rdpSettings* settings;
BOOL async_input;
BOOL async_transport;
HANDLE input_thread;
instance = (freerdp*) lpParam;
context = instance->context;
wfc = (wfContext*) instance->context;
if (!freerdp_connect(instance))
return 0;
channels = instance->context->channels;
settings = instance->context->settings;
async_input = settings->AsyncInput;
async_transport = settings->AsyncTransport;
if (async_input)
{
if (!(input_thread = CreateThread(NULL, 0,
(LPTHREAD_START_ROUTINE) wf_input_thread,
instance, 0, NULL)))
{
WLog_ERR(TAG, "Failed to create async input thread.");
goto disconnect;
}
}
while (1)
{
nCount = 0;
if (freerdp_focus_required(instance))
{
wf_event_focus_in(wfc);
wf_event_focus_in(wfc);
}
if (!async_transport)
{
DWORD tmp = freerdp_get_event_handles(context, &handles[nCount], 64 - nCount);
if (tmp == 0)
{
WLog_ERR(TAG, "freerdp_get_event_handles failed");
break;
}
nCount += tmp;
}
if (MsgWaitForMultipleObjects(nCount, handles, FALSE, 1000, QS_ALLINPUT) == WAIT_FAILED)
{
WLog_ERR(TAG, "wfreerdp_run: WaitForMultipleObjects failed: 0x%04X", GetLastError());
break;
}
if (!async_transport)
{
if (!freerdp_check_event_handles(context))
{
if (wf_auto_reconnect(instance))
continue;
WLog_ERR(TAG, "Failed to check FreeRDP file descriptor");
break;
}
}
if (freerdp_shall_disconnect(instance))
break;
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);
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_disconnect(channels, instance);
if (async_input)
{
wMessageQueue* input_queue;
input_queue = freerdp_get_message_queue(instance, FREERDP_INPUT_MESSAGE_QUEUE);
if (MessageQueue_PostQuit(input_queue, 0))
WaitForSingleObject(input_thread, INFINITE);
CloseHandle(input_thread);
}
disconnect:
freerdp_disconnect(instance);
WLog_DBG(TAG, "Main thread exited.");
ExitThread(0);
return 0;
}
static int android_freerdp_run(freerdp* instance)
{
DWORD count;
DWORD status = WAIT_FAILED;
HANDLE handles[64];
HANDLE inputEvent = NULL;
HANDLE inputThread = NULL;
const rdpSettings* settings = instance->context->settings;
rdpContext* context = instance->context;
BOOL async_input = settings->AsyncInput;
WLog_DBG(TAG, "AsyncInput=%d", settings->AsyncInput);
if (async_input)
{
if (!(inputThread = CreateThread(NULL, 0,
(LPTHREAD_START_ROUTINE) jni_input_thread, instance, 0, NULL)))
{
WLog_ERR(TAG, "async input: failed to create input thread");
goto disconnect;
}
}
else
inputEvent = android_get_handle(instance);
while (!freerdp_shall_disconnect(instance))
{
DWORD tmp;
count = 0;
if (inputThread)
handles[count++] = inputThread;
else
handles[count++] = inputEvent;
tmp = freerdp_get_event_handles(context, &handles[count], 64 - count);
if (tmp == 0)
{
WLog_ERR(TAG, "freerdp_get_event_handles failed");
break;
}
count += tmp;
status = WaitForMultipleObjects(count, handles, FALSE, INFINITE);
if ((status == WAIT_FAILED))
{
WLog_ERR(TAG, "WaitForMultipleObjects failed with %lu [%08lX]",
status, GetLastError());
break;
}
if (!freerdp_check_event_handles(context))
{
/* TODO: Auto reconnect
if (xf_auto_reconnect(instance))
continue;
*/
WLog_ERR(TAG, "Failed to check FreeRDP file descriptor");
status = GetLastError();
break;
}
if (freerdp_shall_disconnect(instance))
break;
if (!async_input)
{
if (android_check_handle(instance) != TRUE)
{
WLog_ERR(TAG, "Failed to check android file descriptor");
status = GetLastError();
break;
}
}
}
disconnect:
WLog_INFO(TAG, "Prepare shutdown...");
if (async_input && inputThread)
{
WaitForSingleObject(inputThread, INFINITE);
CloseHandle(inputThread);
}
return status;
}
DWORD WINAPI wf_thread(LPVOID lpParam)
{
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];
freerdp* instance;
rdpChannels* channels;
instance = (freerdp*) lpParam;
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 (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);
return 0;
}
static DWORD WINAPI shw_client_thread(LPVOID 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 0;
}
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%08lX", 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 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;
}
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;
}
}
}
/*****************************************************************************
* Demux:
*****************************************************************************/
static void *DemuxThread( void *p_data )
{
demux_t *p_demux = (demux_t *) p_data;
demux_sys_t *p_sys = p_demux->p_sys;
p_sys->i_starttime = vlc_tick_now();
vlc_tick_t i_next_frame_date = vlc_tick_now() + p_sys->i_frame_interval;
int i_ret;
for(;;)
{
i_ret = 0;
p_sys->i_cancel_state = vlc_savecancel();
if ( freerdp_shall_disconnect( p_sys->p_instance ) )
{
vlc_restorecancel( p_sys->i_cancel_state );
msg_Warn( p_demux, "RDP server closed session" );
es_out_Del( p_demux->out, p_sys->es );
p_sys->es = NULL;
return NULL;
}
struct
{
void* pp_rfds[RDP_MAX_FD]; /* Declared by rdp */
void* pp_wfds[RDP_MAX_FD];
int i_nbr;
int i_nbw;
struct pollfd ufds[RDP_MAX_FD];
} fds;
fds.i_nbr = fds.i_nbw = 0;
if ( freerdp_get_fds( p_sys->p_instance, fds.pp_rfds, &fds.i_nbr,
fds.pp_wfds, &fds.i_nbw ) != true )
{
vlc_restorecancel( p_sys->i_cancel_state );
msg_Err( p_demux, "cannot get FDS" );
}
else
if ( (fds.i_nbr + fds.i_nbw) > 0 && p_sys->es )
{
vlc_restorecancel( p_sys->i_cancel_state );
int i_count = 0;
for( int i = 0; i < fds.i_nbr; i++ )
{
fds.ufds[ i_count ].fd = (long) fds.pp_rfds[ i ];
fds.ufds[ i_count ].events = POLLIN ;
fds.ufds[ i_count++ ].revents = 0;
}
for( int i = 0; i < fds.i_nbw && i_count < RDP_MAX_FD; i++ )
{ /* may be useless */
fds.ufds[ i_count ].fd = (long) fds.pp_wfds[ i ];
fds.ufds[ i_count ].events = POLLOUT;
fds.ufds[ i_count++ ].revents = 0;
}
i_ret = poll( fds.ufds, i_count, p_sys->i_frame_interval * 1000/2 );
} else {
vlc_restorecancel( p_sys->i_cancel_state );
}
vlc_tick_wait( i_next_frame_date );
i_next_frame_date += p_sys->i_frame_interval;
if ( i_ret >= 0 )
{
/* Do the rendering */
p_sys->i_cancel_state = vlc_savecancel();
freerdp_check_fds( p_sys->p_instance );
vlc_restorecancel( p_sys->i_cancel_state );
block_t *p_block = block_Duplicate( p_sys->p_block );
if (likely( p_block && p_sys->p_block ))
{
p_sys->p_block->i_dts = p_sys->p_block->i_pts = vlc_tick_now() - p_sys->i_starttime;
es_out_SetPCR( p_demux->out, p_sys->p_block->i_pts );
es_out_Send( p_demux->out, p_sys->es, p_sys->p_block );
p_sys->p_block = p_block;
}
}
}
return NULL;
}
int android_freerdp_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;
int select_status;
struct timeval timeout;
assert(instance);
memset(rfds, 0, sizeof(rfds));
memset(wfds, 0, sizeof(wfds));
if (!freerdp_connect(instance))
{
freerdp_callback("OnConnectionFailure", "(I)V", instance);
return 0;
}
((androidContext*)instance->context)->is_connected = TRUE;
while (!freerdp_shall_disconnect(instance))
{
rcount = 0;
wcount = 0;
if (freerdp_get_fds(instance, rfds, &rcount, wfds, &wcount) != TRUE)
{
DEBUG_ANDROID("Failed to get FreeRDP file descriptor\n");
break;
}
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 (android_get_fds(instance, rfds, &rcount, wfds, &wcount) != TRUE)
{
DEBUG_ANDROID("Failed to get android 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;
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 (freerdp_check_fds(instance) != TRUE)
{
DEBUG_ANDROID("Failed to check FreeRDP file descriptor\n");
break;
}
if (android_check_fds(instance) != TRUE)
{
DEBUG_ANDROID("Failed to check android file descriptor\n");
break;
}
if (freerdp_channels_check_fds(instance->context->channels, instance) != TRUE)
{
DEBUG_ANDROID("Failed to check channel manager file descriptor\n");
break;
}
android_process_channel_event(instance->context->channels, instance);
}
// issue another OnDisconnecting here in case the disconnect was initiated by the sever and not our client
freerdp_callback("OnDisconnecting", "(I)V", instance);
freerdp_channels_close(instance->context->channels, instance);
freerdp_disconnect(instance);
gdi_free(instance);
cache_free(instance->context->cache);
android_cliprdr_uninit(instance);
freerdp_callback("OnDisconnected", "(I)V", instance);
return 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;
}
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;
}
/**
* 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 */
rdp_client->keyboard = guac_rdp_keyboard_alloc(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);
/* 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;
}
/* If an error occurred, fail */
if (wait_result < 0)
guac_client_abort(client, GUAC_PROTOCOL_STATUS_UPSTREAM_ERROR,
"Connection closed.");
/* Flush frame */
guac_common_display_flush(rdp_client->display);
guac_client_end_frame(client);
guac_socket_flush(client->socket);
}
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;
}
static int peer_recv_tpkt_pdu(freerdp_peer* client, wStream* s)
{
rdpRdp* rdp;
UINT16 length;
UINT16 pduType;
UINT16 pduLength;
UINT16 pduSource;
UINT16 channelId;
UINT16 securityFlags = 0;
rdp = client->context->rdp;
if (!rdp_read_header(rdp, s, &length, &channelId))
{
WLog_ERR(TAG, "Incorrect RDP header.");
return -1;
}
if (freerdp_shall_disconnect(rdp->instance))
return 0;
if (rdp->settings->UseRdpSecurityLayer)
{
if (!rdp_read_security_header(s, &securityFlags))
return -1;
if (securityFlags & SEC_ENCRYPT)
{
if (!rdp_decrypt(rdp, s, length - 4, securityFlags))
{
WLog_ERR(TAG, "rdp_decrypt failed");
return -1;
}
}
}
if (channelId == MCS_GLOBAL_CHANNEL_ID)
{
if (!rdp_read_share_control_header(s, &pduLength, &pduType, &pduSource))
return -1;
client->settings->PduSource = pduSource;
switch (pduType)
{
case PDU_TYPE_DATA:
if (!peer_recv_data_pdu(client, s))
return -1;
break;
case PDU_TYPE_CONFIRM_ACTIVE:
if (!rdp_server_accept_confirm_active(rdp, s))
return -1;
break;
case PDU_TYPE_FLOW_RESPONSE:
case PDU_TYPE_FLOW_STOP:
case PDU_TYPE_FLOW_TEST:
break;
default:
WLog_ERR(TAG, "Client sent pduType %"PRIu16"", pduType);
return -1;
}
}
else if (rdp->mcs->messageChannelId && channelId == rdp->mcs->messageChannelId)
{
if (!rdp->settings->UseRdpSecurityLayer)
if (!rdp_read_security_header(s, &securityFlags))
return -1;
return rdp_recv_message_channel_pdu(rdp, s, securityFlags);
}
else
{
if (!freerdp_channel_peer_process(client, s, channelId))
return -1;
}
return 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;
}
