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VNCConn.cpp
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VNCConn.cpp
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/*
VNCConn.cpp: VNC connection class implementation.
This file is part of MultiVNC, a multicast-enabled crossplatform
VNC viewer.
Copyright (C) 2009, 2010 Christian Beier <dontmind@freeshell.org>
MultiVNC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
MultiVNC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <cstdarg>
#include <cerrno>
#include <wx/intl.h>
#include <wx/log.h>
#include <wx/socket.h>
#ifdef __WIN32__
#include <winsock.h>
#else
#include <arpa/inet.h>
#endif
#include "VNCConn.h"
// use some global address
#define VNCCONN_OBJ_ID (void*)VNCConn::thread_got_update
// logfile name
#define LOGFILE _T("MultiVNC.log")
// pixelformat defaults
// seems 8,3,4 and 5,3,2 are possible with rfbGetClient()
#define BITSPERSAMPLE 8
#define SAMPLESPERPIXEL 3
#define BYTESPERPIXEL 4
// define our new notify events!
DEFINE_EVENT_TYPE(VNCConnIncomingConnectionNOTIFY)
DEFINE_EVENT_TYPE(VNCConnDisconnectNOTIFY)
DEFINE_EVENT_TYPE(VNCConnUpdateNOTIFY)
DEFINE_EVENT_TYPE(VNCConnFBResizeNOTIFY)
DEFINE_EVENT_TYPE(VNCConnCuttextNOTIFY)
DEFINE_EVENT_TYPE(VNCConnBellNOTIFY)
DEFINE_EVENT_TYPE(VNCConnUniMultiChangedNOTIFY);
DEFINE_EVENT_TYPE(VNCConnReplayFinishedNOTIFY);
BEGIN_EVENT_TABLE(VNCConn, wxEvtHandler)
EVT_TIMER (wxID_ANY, VNCConn::on_stats_timer)
END_EVENT_TABLE();
#ifdef LIBVNCSERVER_WITH_CLIENT_TLS
bool VNCConn::TLS_threading_initialized;
extern "C"
{
#include <gcrypt.h>
#include <errno.h>
/*
* gcrypt thread option wx implementation
*/
static int gcry_wx_mutex_init( void **p )
{
*p = new wxMutex();
return 0;
}
static int gcry_wx_mutex_destroy( void **p )
{
delete (wxMutex*)*p;
return 0;
}
static int gcry_wx_mutex_lock( void **p )
{
if(((wxMutex*)(*p))->Lock() == wxMUTEX_NO_ERROR)
return 0;
else
return 1;
}
static int gcry_wx_mutex_unlock( void **p )
{
if(((wxMutex*)(*p))->Unlock() == wxMUTEX_NO_ERROR)
return 0;
else
return 1;
}
static const struct gcry_thread_cbs gcry_threads_wx =
{
GCRY_THREAD_OPTION_USER,
NULL,
gcry_wx_mutex_init,
gcry_wx_mutex_destroy,
gcry_wx_mutex_lock,
gcry_wx_mutex_unlock
};
}
#endif
/*
constructor/destructor
*/
VNCConn::VNCConn(void* p, char* (*getpassworddfunc)(rfbClient*), rfbCredential* (*getcredentialfunc)(rfbClient*, int))
{
// save our caller
parent = p;
cl = 0;
multicastStatus = 0;
latency = -1;
rfbClientLog = rfbClientErr = thread_logger;
#ifdef LIBVNCSERVER_WITH_CLIENT_TLS
/* we're using threads in here, tell libgcrypt before TLS
gets initialized by libvncclient! */
if(! TLS_threading_initialized)
{
wxLogDebug(wxT("Initialized libgcrypt threading."));
gcry_control (GCRYCTL_SET_THREAD_CBS, &gcry_threads_wx);
gcry_check_version (NULL);
gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
TLS_threading_initialized = true;
}
#endif
// statistics stuff
do_stats = false;
upd_bytes = 0;
upd_bytes_inflated = 0;
upd_count = 0;
stats_timer.SetOwner(this);
// fastrequest stuff
fastrequest_interval = 0;
// record/replay stuff
recording = replaying = false;
// save the credential and password getters
this->getpasswordfunc = getpassworddfunc;
this->getcredentialfunc = getcredentialfunc;
}
VNCConn::~VNCConn()
{
Shutdown();
wxLogDebug(wxT("VNCConn %p: I'm dead!"), this);
}
/*
private members
*/
void VNCConn::on_stats_timer(wxTimerEvent& event)
{
if(do_stats)
{
wxCriticalSectionLocker lock(mutex_stats);
if(statistics.IsEmpty())
statistics.Add(wxString()
+ wxT("UTC time,")
+ wxT("conn time,")
+ wxT("rcvd bytes,")
+ wxT("rcvd bytes inflated,")
+ wxT("upd count,")
+ wxT("latency,")
+ wxT("nack rate,")
+ wxT("loss rate,")
+ wxT("buf size,")
+ wxT("buf fill,"));
wxString sample;
sample += (wxString() << (int)wxGetUTCTime()); // global UTC time
sample += wxT(",");
sample += (wxString() << (int)conn_stopwatch.Time()); // connection time
sample += wxT(",");
sample += (wxString() << upd_bytes); // rcvd bytes sampling
sample += wxT(",");
sample += (wxString() << upd_bytes_inflated); // rcvd bytes inflated sampling
sample += wxT(",");
sample += (wxString() << upd_count); // number of updates sampling
sample += wxT(",");
sample += (wxString() << latency); // latency sampling
sample += wxT(",");
wxString nackrate_str = wxString::Format(wxT("%.4f"), getMCNACKedRatio());
nackrate_str.Replace(wxT(","), wxT("."));
sample += nackrate_str; // nack rate sampling
sample += wxT(",");
wxString lossrate_str = wxString::Format(wxT("%.4f"), getMCLossRatio());
lossrate_str.Replace(wxT(","), wxT("."));
sample += lossrate_str; // loss rate sampling
sample += wxT(",");
sample += (wxString() << getMCBufSize()); // buffer size sampling
sample += wxT(",");
sample += (wxString() << getMCBufFill()); // buffer fill sampling
// add the sample
statistics.Add(sample);
// reset these
upd_bytes = 0;
upd_bytes_inflated = 0;
upd_count = 0;
latency = -1;
latency_test_trigger = true;
}
}
rfbBool VNCConn::alloc_framebuffer(rfbClient* client)
{
// get VNCConn object belonging to this client
VNCConn* conn = (VNCConn*) rfbClientGetClientData(client, VNCCONN_OBJ_ID);
wxLogDebug(wxT("VNCConn %p: alloc'ing framebuffer w:%i, h:%i"), conn, client->width, client->height);
// assert 32bpp, as requested with GetClient() in Init()
if(client->format.bitsPerPixel != 32)
{
conn->err.Printf(_("Failure setting up framebuffer: wrong BPP!"));
return false;
}
// ensure that we get the whole framebuffer in case of a resize!
client->updateRect.x = client->updateRect.y = 0;
client->updateRect.w = client->width; client->updateRect.h = client->height;
// free
if(client->frameBuffer)
free(client->frameBuffer);
// alloc, zeroed
client->frameBuffer = (uint8_t*)calloc(1, client->width*client->height*client->format.bitsPerPixel/8);
// notify our parent
conn->thread_post_fbresize_notify();
return client->frameBuffer ? TRUE : FALSE;
}
wxThread::ExitCode VNCConn::Entry()
{
int i=0;
pointerEvent pe;
keyEvent ke = {0, 0};
while(! GetThread()->TestDestroy())
{
if(thread_listenmode)
{
i=listenForIncomingConnectionsNoFork(cl, 100000); // 100 ms
if(i<0)
{
if(errno==EINTR)
continue;
wxLogDebug(wxT("VNCConn %p: vncthread listen() failed"), this);
thread_post_disconnect_notify();
break;
}
if(i)
{
thread_post_incomingconnection_notify();
break;
}
}
else
{
// userinput replay here
{
wxCriticalSectionLocker lock(mutex_recordreplay);
if(replaying)
{
if(userinput_pos < userinput.GetCount()) // still recorded input there
{
wxString ui_now = userinput[userinput_pos];
// get timestamp and strip it from string
long ts = wxAtol(ui_now.BeforeFirst(','));
ui_now = ui_now.AfterFirst(',');
if(ts <= recordreplay_stopwatch.Time()) // past or now, process it
{
// get type
wxString type = ui_now.BeforeFirst(',');
ui_now = ui_now.AfterFirst(',');
if(type == wxT("p"))
{
// get pointer x,y, buttmask
int x = wxAtoi(ui_now.BeforeFirst(','));
ui_now = ui_now.AfterFirst(',');
int y = wxAtoi(ui_now.BeforeFirst(','));
ui_now = ui_now.AfterFirst(',');
int bmask = wxAtoi(ui_now);
// and send
SendPointerEvent(cl, x, y, bmask);
}
if(type == wxT("k"))
{
// get keysym
rfbKeySym keysym = wxAtoi(ui_now.BeforeFirst(','));
ui_now = ui_now.AfterFirst(',');
bool down = wxAtoi(ui_now);
// and send
SendKeyEvent(cl, keysym, down);
}
// advance to next input
++userinput_pos;
}
}
else if (replay_loop)
{
userinput_pos = 0; // rewind
recordreplay_stopwatch.Start(); // restart
}
else
{
replaying = false; // all done
thread_post_replayfinished_notify();
}
}
}
// send everything that's inside the input queues
while(pointer_event_q.ReceiveTimeout(0, pe) != wxMSGQUEUE_TIMEOUT) // timeout == empty
thread_send_pointer_event(pe);
while(key_event_q.ReceiveTimeout(0, ke) != wxMSGQUEUE_TIMEOUT) // timeout == empty
thread_send_key_event(ke);
{
wxCriticalSectionLocker lock(mutex_stats);
if(latency_test_trigger)
{
latency_test_trigger = false;
thread_send_latency_probe();
}
}
if(fastrequest_interval && (size_t)fastrequest_stopwatch.Time() > fastrequest_interval)
{
if(isMulticast())
SendMulticastFramebufferUpdateRequest(cl, TRUE);
else
SendFramebufferUpdateRequest(cl, 0, 0, cl->width, cl->height, TRUE);
fastrequest_stopwatch.Start(); // restart
}
// request update and handle response
if(!rfbProcessServerMessage(cl, 500))
{
if(errno == EINTR)
continue;
wxLogDebug(wxT("VNCConn %p: vncthread rfbProcessServerMessage() failed"), this);
thread_post_disconnect_notify();
break;
}
/*
Compute nacked/loss ratio: We take a ratio sample every second and put it into a sample queue
of size N. Action is taken when the average sample value of the whole buffer exceeds a per-action
limit. This has advantages over taking a sample every N seconds: First, it's able to catch say a 5sec burst
that could be missed by two adjacent 10sec samples (one catches 2sec, the next one 3sec - no action triggered
although condition present). Second, this way we're able to show a value to the user every second independent
of the sample time frame.
*/
if(isMulticast() && multicastratio_stopwatch.Time() >= 1000)
{
// restart
multicastratio_stopwatch.Start();
/*
take sample
*/
{
// the fifos are read by the GUI thread as well!
wxCriticalSectionLocker lock(mutex_multicastratio);
if(multicastNACKedRatios.size() >= MULTICAST_RATIO_SAMPLES) // make room if size exceeded
multicastNACKedRatios.pop_front();
if(cl->multicastPktsRcvd + cl->multicastPktsNACKed > 0)
multicastNACKedRatios.push_back(cl->multicastPktsNACKed/(double)(cl->multicastPktsRcvd + cl->multicastPktsNACKed));
else
multicastNACKedRatios.push_back(-1); // nothing to measure, add invalid marker
if(multicastLossRatios.size() >= MULTICAST_RATIO_SAMPLES) // make room if size exceeded
multicastLossRatios.pop_front();
if(cl->multicastPktsRcvd + cl->multicastPktsLost > 0)
multicastLossRatios.push_back(cl->multicastPktsLost/(double)(cl->multicastPktsRcvd + cl->multicastPktsLost));
else
multicastLossRatios.push_back(-1); // nothing to measure, add invalid marker
// reset the values we sample
cl->multicastPktsRcvd = cl->multicastPktsNACKed = cl->multicastPktsLost = 0;
}
/*
And act accordingly, but only after the ratio deques are at least half full.
When a client joins a multicast group with heavy traffic going on, it will lose
a lot of packets in the very beginning because there is a considerable time
amount between it's multicast socket creation and the first read. Thus, the socket
buffer is likely to overflow in this start situation, resulting in packet loss.
*/
if(multicastLossRatios.size() >= MULTICAST_RATIO_SAMPLES/2)
{
if(getMCLossRatio() > 0.5)
{
rfbClientLog("MultiVNC: loss ratio > 0.5, falling back to unicast\n");
wxLogDebug(wxT("VNCConn %p: multicast loss ratio > 0.5, falling back to unicast"), this);
cl->multicastDisabled = TRUE;
SendFramebufferUpdateRequest(cl, 0, 0, cl->width, cl->height, FALSE);
}
else if(getMCLossRatio() > 0.2)
{
rfbClientLog("MultiVNC: loss ratio > 0.2, requesting a full multicast framebuffer update\n");
SendMulticastFramebufferUpdateRequest(cl, FALSE);
cl->multicastPktsLost /= 2;
}
}
}
int now = isMulticast();
if(now != multicastStatus)
{
multicastStatus = now;
thread_post_unimultichanged_notify();
}
}
}
return 0;
}
bool VNCConn::thread_send_pointer_event(pointerEvent &event)
{
int buttonmask = 0;
if(event.LeftIsDown())
buttonmask |= rfbButton1Mask;
if(event.MiddleIsDown())
buttonmask |= rfbButton2Mask;
if(event.RightIsDown())
buttonmask |= rfbButton3Mask;
if(event.GetWheelRotation() > 0)
buttonmask |= rfbWheelUpMask;
if(event.GetWheelRotation() < 0)
buttonmask |= rfbWheelDownMask;
if(event.Entering() && ! cuttext.IsEmpty())
{
wxCriticalSectionLocker lock(mutex_cuttext); // since cuttext can be set from the main thread
// if encoding fails, a NULL pointer is returned!
if(cuttext.mb_str(wxCSConv(wxT("iso-8859-1"))))
{
wxLogDebug(wxT("VNCConn %p: sending cuttext: '%s'"), this, cuttext.c_str());
char* encoded_text = strdup(cuttext.mb_str(wxCSConv(wxT("iso-8859-1"))));
SendClientCutText(cl, encoded_text, strlen(encoded_text));
free(encoded_text);
}
else
wxLogDebug(wxT("VNCConn %p: sending cuttext FAILED, could not convert '%s' to ISO-8859-1"), this, cuttext.c_str());
}
// record here
{
wxCriticalSectionLocker lock(mutex_recordreplay);
if(recording)
{
wxString ui_now;
ui_now += (wxString() << (int)recordreplay_stopwatch.Time());
ui_now += wxT(",");
ui_now += wxT("p"); // is pointer event
ui_now += wxT(",");
ui_now += (wxString() << event.m_x);
ui_now += wxT(",");
ui_now += (wxString() << event.m_y);
ui_now += wxT(",");
ui_now += (wxString() << buttonmask);
userinput.Add(ui_now);
}
}
wxLogDebug(wxT("VNCConn %p: sending pointer event at (%d,%d), buttonmask %d"), this, event.m_x, event.m_y, buttonmask);
return SendPointerEvent(cl, event.m_x, event.m_y, buttonmask);
}
bool VNCConn::thread_send_key_event(keyEvent &event)
{
// record here
{
wxCriticalSectionLocker lock(mutex_recordreplay);
if(recording)
{
wxString ui_now;
ui_now += (wxString() << (int)recordreplay_stopwatch.Time());
ui_now += wxT(",");
ui_now += wxT("k"); // is key event
ui_now += wxT(",");
ui_now += (wxString() << event.keysym);
ui_now += wxT(",");
ui_now += (wxString() << event.down);
userinput.Add(ui_now);
}
}
return SendKeyEvent(cl, event.keysym, event.down);
}
bool VNCConn::thread_send_latency_probe()
{
bool result = TRUE;
// latency check start
if(SupportsClient2Server(cl, rfbXvp)) // favor xvp over the rect check
{
if(!latency_test_xvpmsg_sent)
{
result = SendXvpMsg(cl, LATENCY_TEST_XVP_VER, 2);
latency_test_xvpmsg_sent = true;
latency_stopwatch.Start();
wxLogDebug(wxT("VNCConn %p: xvp message sent to test latency"), this);
}
}
else // check using special rect
{
if(!latency_test_rect_sent)
{
result = SendFramebufferUpdateRequest(cl, LATENCY_TEST_RECT, FALSE);
latency_test_rect_sent = true;
latency_stopwatch.Start();
wxLogDebug(wxT("VNCConn %p: fb update request sent to test latency"), this);
}
}
return result;
}
void VNCConn::thread_post_incomingconnection_notify()
{
wxLogDebug(wxT("VNCConn %p: post_incomingconnection_notify()"), this);
// new NOTIFY event, we got no window id
wxCommandEvent event(VNCConnIncomingConnectionNOTIFY, wxID_ANY);
event.SetEventObject(this); // set sender
// Send it
wxPostEvent((wxEvtHandler*)parent, event);
}
void VNCConn::thread_post_disconnect_notify()
{
wxLogDebug(wxT("VNCConn %p: post_disconnect_notify()"), this);
// new NOTIFY event, we got no window id
wxCommandEvent event(VNCConnDisconnectNOTIFY, wxID_ANY);
event.SetEventObject(this); // set sender
// Send it
wxPostEvent((wxEvtHandler*)parent, event);
}
void VNCConn::thread_post_update_notify(int x, int y, int w, int h)
{
VNCConnUpdateNotifyEvent event(VNCConnUpdateNOTIFY, wxID_ANY);
event.SetEventObject(this); // set sender
// set info about what was updated
event.rect = wxRect(x, y, w, h);
wxLogDebug(wxT("VNCConn %p: post_update_notify(%i,%i,%i,%i)"), this,
event.rect.x,
event.rect.y,
event.rect.width,
event.rect.height);
// Send it
wxPostEvent((wxEvtHandler*)parent, event);
}
void VNCConn::thread_post_fbresize_notify()
{
wxLogDebug(wxT("VNCConn %p: post_fbresize_notify() (%i, %i)"),
this,
getFrameBufferWidth(),
getFrameBufferHeight());
// new NOTIFY event, we got no window id
wxCommandEvent event(VNCConnFBResizeNOTIFY, wxID_ANY);
event.SetEventObject(this); // set sender
// Send it
wxPostEvent((wxEvtHandler*)parent, event);
}
void VNCConn::thread_post_cuttext_notify()
{
// new NOTIFY event, we got no window id
wxCommandEvent event(VNCConnCuttextNOTIFY, wxID_ANY);
event.SetEventObject(this); // set sender
// Send it
wxPostEvent((wxEvtHandler*)parent, event);
}
void VNCConn::thread_post_bell_notify()
{
// new NOTIFY event, we got no window id
wxCommandEvent event(VNCConnBellNOTIFY, wxID_ANY);
event.SetEventObject(this); // set sender
// Send it
wxPostEvent((wxEvtHandler*)parent, event);
}
void VNCConn::thread_post_unimultichanged_notify()
{
wxCommandEvent event(VNCConnUniMultiChangedNOTIFY, wxID_ANY);
event.SetEventObject(this); // set sender
// Send it
wxPostEvent((wxEvtHandler*)parent, event);
}
void VNCConn::thread_post_replayfinished_notify()
{
wxCommandEvent event(VNCConnReplayFinishedNOTIFY, wxID_ANY);
event.SetEventObject(this); // set sender
// Send it
wxPostEvent((wxEvtHandler*)parent, event);
}
void VNCConn::thread_got_update(rfbClient* client,int x,int y,int w,int h)
{
VNCConn* conn = (VNCConn*) rfbClientGetClientData(client, VNCCONN_OBJ_ID);
if(! conn->GetThread()->TestDestroy())
{
conn->updated_rect.Union(wxRect(x, y, w, h));
// single (partial) multicast updates are small, so when a big region is updated,
// the update notify receiver gets flooded, resulting in way too much cpu load.
// thus, when multicasting, we only notify for logic (whole) framebuffer updates.
if(!conn->isMulticast())
conn->thread_post_update_notify(x, y, w, h);
if(conn->do_stats)
{
wxCriticalSectionLocker lock(conn->mutex_stats);
wxRect this_update_rect = wxRect(x,y,w,h);
// compressed bytes
conn->upd_bytes += conn->cl->bytesRcvd;
conn->upd_bytes += conn->cl->multicastBytesRcvd;
conn->cl->bytesRcvd = conn->cl->multicastBytesRcvd = 0;
// uncompressed bytes
conn->upd_bytes_inflated += w*h*BYTESPERPIXEL;
// latency check, rect case
if(conn->latency_test_rect_sent && this_update_rect.Contains(wxRect(LATENCY_TEST_RECT)))
{
conn->latency_stopwatch.Pause();
conn->latency = conn->latency_stopwatch.Time();
conn->latency_test_rect_sent = false;
wxLogDebug(wxT("VNCConn %p: got update containing latency test rect, took %ims"), conn, conn->latency_stopwatch.Time());
}
}
}
}
void VNCConn::thread_update_finished(rfbClient* client)
{
VNCConn* conn = (VNCConn*) rfbClientGetClientData(client, VNCCONN_OBJ_ID);
if(! conn->GetThread()->TestDestroy())
{
// single (partial) multicast updates are small, so when a big region is updated,
// the update notify receiver gets flooded, resulting in way too much cpu load.
// thus, when multicasting, we only notify for logic (whole) framebuffer updates.
if(conn->isMulticast() && !conn->updated_rect.IsEmpty())
conn->thread_post_update_notify(conn->updated_rect.x, conn->updated_rect.y, conn->updated_rect.width, conn->updated_rect.height);
conn->updated_rect = wxRect();
if(conn->do_stats)
{
wxCriticalSectionLocker lock(conn->mutex_stats);
conn->upd_count++;
}
}
}
void VNCConn::thread_kbd_leds(rfbClient* cl, int value, int pad)
{
VNCConn* conn = (VNCConn*) rfbClientGetClientData(cl, VNCCONN_OBJ_ID);
wxLogDebug(wxT("VNCConn %p: Led State= 0x%02X"), conn, value);
}
void VNCConn::thread_textchat(rfbClient* cl, int value, char *text)
{
VNCConn* conn = (VNCConn*) rfbClientGetClientData(cl, VNCCONN_OBJ_ID);
switch(value)
{
case (int)rfbTextChatOpen:
wxLogDebug(wxT("VNCConn %p: got textchat open\n"), conn);
break;
case (int)rfbTextChatClose:
wxLogDebug(wxT("VNCConn %p: got textchat close\n"), conn);
break;
case (int)rfbTextChatFinished:
wxLogDebug(wxT("VNCConn %p: got textchat finish\n"), conn);
break;
default:
wxLogDebug(wxT("VNCConn %p: got textchat text: '%s'\n"), conn, text);
}
}
void VNCConn::thread_got_cuttext(rfbClient *cl, const char *text, int len)
{
VNCConn* conn = (VNCConn*) rfbClientGetClientData(cl, VNCCONN_OBJ_ID);
wxLogDebug(wxT("VNCConn %p: got cuttext: '%s'"), conn, wxString(text, wxCSConv(wxT("iso-8859-1"))).c_str());
wxCriticalSectionLocker lock(conn->mutex_cuttext); // since cuttext can also be set from the main thread
conn->cuttext = wxString(text, wxCSConv(wxT("iso-8859-1")));
conn->thread_post_cuttext_notify();
}
void VNCConn::thread_bell(rfbClient *cl)
{
VNCConn* conn = (VNCConn*) rfbClientGetClientData(cl, VNCCONN_OBJ_ID);
wxLogDebug(wxT("VNCConn %p: bell"), conn);
conn->thread_post_bell_notify();
}
void VNCConn::thread_handle_xvp(rfbClient *cl, uint8_t ver, uint8_t code)
{
VNCConn* conn = (VNCConn*) rfbClientGetClientData(cl, VNCCONN_OBJ_ID);
wxLogDebug(wxT("VNCConn %p: handling xvp msg version %d code %d"), conn, ver, code);
if(conn->latency_test_xvpmsg_sent && ver == LATENCY_TEST_XVP_VER && code == rfbXvp_Fail)
{
wxCriticalSectionLocker lock(conn->mutex_stats);
conn->latency_stopwatch.Pause();
conn->latency = conn->latency_stopwatch.Time();
conn->latency_test_xvpmsg_sent = false;
wxLogDebug(wxT("VNCConn %p: got latency test xvp message back, took %ims"), conn, conn->latency_stopwatch.Time());
}
}
// there's no per-connection log since we cannot find out which client
// called the logger function :-(
wxArrayString VNCConn::log;
wxCriticalSection VNCConn::mutex_log;
bool VNCConn::do_logfile;
void VNCConn::thread_logger(const char *format, ...)
{
if(!rfbEnableClientLogging)
return;
// since we're accessing some global things here from different threads
wxCriticalSectionLocker lock(mutex_log);
wxChar timebuf[256];
time_t log_clock;
time(&log_clock);
wxStrftime(timebuf, WXSIZEOF(timebuf), _T("%d/%m/%Y %X "), localtime(&log_clock));
// global log string array
va_list args;
wxString wx_format(format, wxConvUTF8);
va_start(args, format);
char msg[1024];
vsnprintf(msg, 1024, format, args);
log.Add( wxString(timebuf) + wxString(msg, wxConvUTF8));
va_end(args);
// global log file
if(do_logfile)
{
FILE* logfile;
wxString logfile_str = LOGFILE;
// delete logfile on program startup
static bool firstrun = 1;
if(firstrun)
{
remove(logfile_str.char_str());
firstrun = 0;
}
logfile=fopen(logfile_str.char_str(),"a");
va_start(args, format);
fprintf(logfile, wxString(timebuf).mb_str());
vfprintf(logfile, format, args);
va_end(args);
fclose(logfile);
}
// and stderr
va_start(args, format);
fprintf(stderr, wxString(timebuf).mb_str());
vfprintf(stderr, format, args);
va_end(args);
}
/*
public members
*/
bool VNCConn::setupClient()
{
wxLogDebug(wxT("VNCConn %p: setupClient()"), this);
if(cl) // already set up
{
wxLogDebug(wxT("VNCConn %p: setupClient() already done"), this);
return false;
}
// this takes (int bitsPerSample,int samplesPerPixel, int bytesPerPixel)
// 5,3,2 and 8,3,4 seem possible
cl=rfbGetClient(BITSPERSAMPLE, SAMPLESPERPIXEL, BYTESPERPIXEL);
rfbClientSetClientData(cl, VNCCONN_OBJ_ID, this);
// callbacks
cl->MallocFrameBuffer = alloc_framebuffer;
cl->GotFrameBufferUpdate = thread_got_update;
cl->FinishedFrameBufferUpdate = thread_update_finished;
cl->GetPassword = getpasswordfunc;
cl->GetCredential = getcredentialfunc;
cl->HandleKeyboardLedState = thread_kbd_leds;
cl->HandleTextChat = thread_textchat;
cl->GotXCutText = thread_got_cuttext;
cl->Bell = thread_bell;
cl->HandleXvpMsg = thread_handle_xvp;
cl->canHandleNewFBSize = TRUE;
return true;
}
bool VNCConn::Listen(int port)
{
wxLogDebug(wxT("VNCConn %p: Listen() port %d"), this, port);
if(!cl)
setupClient();
cl->listenPort = cl->listen6Port = port;
thread_listenmode = true;
if( CreateThread() != wxTHREAD_NO_ERROR )
{
err.Printf(_("Could not create VNC listener thread!"));
Shutdown();
return false;
}
if( GetThread()->Run() != wxTHREAD_NO_ERROR )
{
err.Printf(_("Could not start VNC listener thread!"));
Shutdown();
return false;
}
return true;
}
bool VNCConn::Init(const wxString& host, const wxString& username,
#if wxUSE_SECRETSTORE
const wxSecretValue& password,
#endif
const wxString& encodings, int compresslevel, int quality, bool multicast, int multicast_socketrecvbuf, int multicast_recvbuf)
{
wxLogDebug(wxT("VNCConn %p: Init()"), this);
if(!cl)
setupClient();
if(cl->frameBuffer || (GetThread() && GetThread()->IsRunning()))
{
wxLogDebug(wxT("VNCConn %p: Init() already done. Call Shutdown() first!"), this);
return false;
}
// reset stats before doing new connection
resetStats();
cl->programName = "VNCConn";
parseHostString(host.mb_str(), 5900, &cl->serverHost, &cl->serverPort);
this->username = username;
#if wxUSE_SECRETSTORE
this->password = password;
#endif
// Support short-form (:0, :1)
if(cl->serverPort < 100)
cl->serverPort += 5900;