barrier/lib/server/CClientProxy1_0.cpp

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#include "CClientProxy1_0.h"
#include "CServer.h"
#include "CClipboard.h"
#include "CProtocolUtil.h"
#include "XSynergy.h"
#include "IInputStream.h"
#include "IOutputStream.h"
#include "CLock.h"
#include "CThread.h"
#include "CLog.h"
#include "CStopwatch.h"
#include <cstring>
//
// CClientProxy1_0
//
CClientProxy1_0::CClientProxy1_0(IServer* server, const CString& name,
IInputStream* input, IOutputStream* output) :
CClientProxy(server, name, input, output)
{
for (UInt32 i = 0; i < kClipboardEnd; ++i) {
m_clipboardDirty[i] = true;
}
}
CClientProxy1_0::~CClientProxy1_0()
{
// do nothing
}
bool
CClientProxy1_0::open()
{
// send request
log((CLOG_DEBUG1 "querying client \"%s\" info", getName().c_str()));
CProtocolUtil::writef(getOutputStream(), kMsgQInfo);
getOutputStream()->flush();
// wait for and verify reply
UInt8 code[4];
for (;;) {
UInt32 n = getInputStream()->read(code, 4, -1.0);
if (n == 4) {
if (memcmp(code, kMsgCNoop, 4) == 0) {
// discard heartbeats
continue;
}
if (memcmp(code, kMsgDInfo, 4) == 0) {
break;
}
}
throw XBadClient();
}
// handle reply
recvInfo(false);
return true;
}
void
CClientProxy1_0::mainLoop()
{
// handle messages until the client hangs up or stops sending heartbeats
CStopwatch heartTimer;
for (;;) {
CThread::testCancel();
// wait for a message
UInt8 code[4];
UInt32 n = getInputStream()->read(code, 4, kHeartRate);
CThread::testCancel();
// check if client hungup
if (n == 0) {
log((CLOG_NOTE "client \"%s\" disconnected", getName().c_str()));
return;
}
// check if client has stopped sending heartbeats
if (n == (UInt32)-1) {
/* FIXME -- disabled to avoid masking bugs
if (heartTimer.getTime() > kHeartDeath) {
log((CLOG_NOTE "client \"%s\" is dead", getName().c_str()));
return;
}
*/
continue;
}
// got a message so reset heartbeat monitor
heartTimer.reset();
// verify we got an entire code
if (n != 4) {
log((CLOG_ERR "incomplete message from \"%s\": %d bytes", getName().c_str(), n));
// client sent an incomplete message
throw XBadClient();
}
// parse message
log((CLOG_DEBUG2 "msg from \"%s\": %c%c%c%c", getName().c_str(), code[0], code[1], code[2], code[3]));
if (memcmp(code, kMsgDInfo, 4) == 0) {
recvInfo(true);
}
else if (memcmp(code, kMsgCNoop, 4) == 0) {
// discard no-ops
continue;
}
else if (memcmp(code, kMsgCClipboard, 4) == 0) {
recvGrabClipboard();
}
else if (memcmp(code, kMsgDClipboard, 4) == 0) {
recvClipboard();
}
// note -- more message handlers go here
else {
log((CLOG_ERR "invalid message from client \"%s\"", getName().c_str()));
// unknown message
throw XBadClient();
}
}
}
void
CClientProxy1_0::close()
{
log((CLOG_DEBUG1 "send close to \"%s\"", getName().c_str()));
CProtocolUtil::writef(getOutputStream(), kMsgCClose);
// force the close to be sent before we return
getOutputStream()->flush();
}
void
CClientProxy1_0::enter(SInt32 xAbs, SInt32 yAbs,
UInt32 seqNum, KeyModifierMask mask, bool)
{
log((CLOG_DEBUG1 "send enter to \"%s\", %d,%d %d %04x", getName().c_str(), xAbs, yAbs, seqNum, mask));
CProtocolUtil::writef(getOutputStream(), kMsgCEnter,
xAbs, yAbs, seqNum, mask);
}
bool
CClientProxy1_0::leave()
{
log((CLOG_DEBUG1 "send leave to \"%s\"", getName().c_str()));
CProtocolUtil::writef(getOutputStream(), kMsgCLeave);
// we can never prevent the user from leaving
return true;
}
void
CClientProxy1_0::setClipboard(ClipboardID id, const CString& data)
{
// ignore if this clipboard is already clean
CLock lock(&m_mutex);
if (m_clipboardDirty[id]) {
// this clipboard is now clean
m_clipboardDirty[id] = false;
log((CLOG_DEBUG "send clipboard %d to \"%s\" size=%d", id, getName().c_str(), data.size()));
CProtocolUtil::writef(getOutputStream(), kMsgDClipboard, id, 0, &data);
}
}
void
CClientProxy1_0::grabClipboard(ClipboardID id)
{
log((CLOG_DEBUG "send grab clipboard %d to \"%s\"", id, getName().c_str()));
CProtocolUtil::writef(getOutputStream(), kMsgCClipboard, id, 0);
// this clipboard is now dirty
CLock lock(&m_mutex);
m_clipboardDirty[id] = true;
}
void
CClientProxy1_0::setClipboardDirty(ClipboardID id, bool dirty)
{
CLock lock(&m_mutex);
m_clipboardDirty[id] = dirty;
}
void
CClientProxy1_0::keyDown(KeyID key, KeyModifierMask mask)
{
log((CLOG_DEBUG1 "send key down to \"%s\" id=%d, mask=0x%04x", getName().c_str(), key, mask));
CProtocolUtil::writef(getOutputStream(), kMsgDKeyDown, key, mask);
}
void
CClientProxy1_0::keyRepeat(KeyID key, KeyModifierMask mask, SInt32 count)
{
log((CLOG_DEBUG1 "send key repeat to \"%s\" id=%d, mask=0x%04x, count=%d", getName().c_str(), key, mask, count));
CProtocolUtil::writef(getOutputStream(), kMsgDKeyRepeat, key, mask, count);
}
void
CClientProxy1_0::keyUp(KeyID key, KeyModifierMask mask)
{
log((CLOG_DEBUG1 "send key up to \"%s\" id=%d, mask=0x%04x", getName().c_str(), key, mask));
CProtocolUtil::writef(getOutputStream(), kMsgDKeyUp, key, mask);
}
void
CClientProxy1_0::mouseDown(ButtonID button)
{
log((CLOG_DEBUG1 "send mouse down to \"%s\" id=%d", getName().c_str(), button));
CProtocolUtil::writef(getOutputStream(), kMsgDMouseDown, button);
}
void
CClientProxy1_0::mouseUp(ButtonID button)
{
log((CLOG_DEBUG1 "send mouse up to \"%s\" id=%d", getName().c_str(), button));
CProtocolUtil::writef(getOutputStream(), kMsgDMouseUp, button);
}
void
CClientProxy1_0::mouseMove(SInt32 xAbs, SInt32 yAbs)
{
log((CLOG_DEBUG2 "send mouse move to \"%s\" %d,%d", getName().c_str(), xAbs, yAbs));
CProtocolUtil::writef(getOutputStream(), kMsgDMouseMove, xAbs, yAbs);
}
void
CClientProxy1_0::mouseWheel(SInt32 delta)
{
log((CLOG_DEBUG2 "send mouse wheel to \"%s\" %+d", getName().c_str(), delta));
CProtocolUtil::writef(getOutputStream(), kMsgDMouseWheel, delta);
}
void
CClientProxy1_0::screensaver(bool on)
{
log((CLOG_DEBUG1 "send screen saver to \"%s\" on=%d", getName().c_str(), on ? 1 : 0));
CProtocolUtil::writef(getOutputStream(), kMsgCScreenSaver, on ? 1 : 0);
}
SInt32
CClientProxy1_0::getJumpZoneSize() const
{
CLock lock(&m_mutex);
return m_info.m_zoneSize;
}
void
CClientProxy1_0::getShape(SInt32& x, SInt32& y, SInt32& w, SInt32& h) const
{
CLock lock(&m_mutex);
x = m_info.m_x;
y = m_info.m_y;
w = m_info.m_w;
h = m_info.m_h;
}
void
CClientProxy1_0::getCursorPos(SInt32&, SInt32&) const
{
assert(0 && "shouldn't be called");
}
void
CClientProxy1_0::getCursorCenter(SInt32& x, SInt32& y) const
{
CLock lock(&m_mutex);
x = m_info.m_mx;
y = m_info.m_my;
}
void
CClientProxy1_0::recvInfo(bool notify)
{
{
CLock lock(&m_mutex);
// parse the message
SInt16 x, y, w, h, zoneSize, mx, my;
CProtocolUtil::readf(getInputStream(), kMsgDInfo + 4,
&x, &y, &w, &h, &zoneSize, &mx, &my);
log((CLOG_DEBUG "received client \"%s\" info shape=%d,%d %dx%d, zone=%d, pos=%d,%d", getName().c_str(), x, y, w, h, zoneSize, mx, my));
// validate
if (w <= 0 || h <= 0 || zoneSize < 0) {
throw XBadClient();
}
if (mx < x || my < y || mx >= x + w || my >= y + h) {
throw XBadClient();
}
// save
m_info.m_x = x;
m_info.m_y = y;
m_info.m_w = w;
m_info.m_h = h;
m_info.m_zoneSize = zoneSize;
m_info.m_mx = mx;
m_info.m_my = my;
}
// tell server of change
if (notify) {
getServer()->onInfoChanged(getName(), m_info);
}
// acknowledge receipt
log((CLOG_DEBUG1 "send info ack to \"%s\"", getName().c_str()));
CProtocolUtil::writef(getOutputStream(), kMsgCInfoAck);
}
void
CClientProxy1_0::recvClipboard()
{
// parse message
ClipboardID id;
UInt32 seqNum;
CString data;
CProtocolUtil::readf(getInputStream(), kMsgDClipboard + 4, &id, &seqNum, &data);
log((CLOG_DEBUG "received client \"%s\" clipboard %d seqnum=%d, size=%d", getName().c_str(), id, seqNum, data.size()));
// validate
if (id >= kClipboardEnd) {
throw XBadClient();
}
// send update. this calls us back to reset our clipboard dirty flag
// so don't hold a lock during the call.
getServer()->onClipboardChanged(id, seqNum, data);
}
void
CClientProxy1_0::recvGrabClipboard()
{
// parse message
ClipboardID id;
UInt32 seqNum;
CProtocolUtil::readf(getInputStream(), kMsgCClipboard + 4, &id, &seqNum);
log((CLOG_DEBUG "received client \"%s\" grabbed clipboard %d seqnum=%d", getName().c_str(), id, seqNum));
// validate
if (id >= kClipboardEnd) {
throw XBadClient();
}
// send update. this calls us back to reset our clipboard dirty flag
// so don't hold a lock during the call.
getServer()->onGrabClipboard(getName(), id, seqNum);
}