mirror of
https://github.com/Drezil/imgui.git
synced 2024-12-23 08:06:35 +00:00
637 lines
18 KiB
C
637 lines
18 KiB
C
/*
|
|
uSynergy client -- Implementation for the embedded Synergy client library
|
|
version 1.0.0, July 7th, 2012
|
|
|
|
Copyright (c) 2012 Alex Evans
|
|
|
|
This software is provided 'as-is', without any express or implied
|
|
warranty. In no event will the authors be held liable for any damages
|
|
arising from the use of this software.
|
|
|
|
Permission is granted to anyone to use this software for any purpose,
|
|
including commercial applications, and to alter it and redistribute it
|
|
freely, subject to the following restrictions:
|
|
|
|
1. The origin of this software must not be misrepresented; you must not
|
|
claim that you wrote the original software. If you use this software
|
|
in a product, an acknowledgment in the product documentation would be
|
|
appreciated but is not required.
|
|
|
|
2. Altered source versions must be plainly marked as such, and must not be
|
|
misrepresented as being the original software.
|
|
|
|
3. This notice may not be removed or altered from any source
|
|
distribution.
|
|
*/
|
|
#include "uSynergy.h"
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
// Internal helpers
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
|
|
|
|
|
|
/**
|
|
@brief Read 16 bit integer in network byte order and convert to native byte order
|
|
**/
|
|
static int16_t sNetToNative16(const unsigned char *value)
|
|
{
|
|
#ifdef USYNERGY_LITTLE_ENDIAN
|
|
return value[1] | (value[0] << 8);
|
|
#else
|
|
return value[0] | (value[1] << 8);
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
@brief Read 32 bit integer in network byte order and convert to native byte order
|
|
**/
|
|
static int32_t sNetToNative32(const unsigned char *value)
|
|
{
|
|
#ifdef USYNERGY_LITTLE_ENDIAN
|
|
return value[3] | (value[2] << 8) | (value[1] << 16) | (value[0] << 24);
|
|
#else
|
|
return value[0] | (value[1] << 8) | (value[2] << 16) | (value[3] << 24);
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
@brief Trace text to client
|
|
**/
|
|
static void sTrace(uSynergyContext *context, const char* text)
|
|
{
|
|
// Don't trace if we don't have a trace function
|
|
if (context->m_traceFunc != 0L)
|
|
context->m_traceFunc(context->m_cookie, text);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
@brief Add string to reply packet
|
|
**/
|
|
static void sAddString(uSynergyContext *context, const char *string)
|
|
{
|
|
size_t len = strlen(string);
|
|
memcpy(context->m_replyCur, string, len);
|
|
context->m_replyCur += len;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
@brief Add uint8 to reply packet
|
|
**/
|
|
static void sAddUInt8(uSynergyContext *context, uint8_t value)
|
|
{
|
|
*context->m_replyCur++ = value;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
@brief Add uint16 to reply packet
|
|
**/
|
|
static void sAddUInt16(uSynergyContext *context, uint16_t value)
|
|
{
|
|
uint8_t *reply = context->m_replyCur;
|
|
*reply++ = (uint8_t)(value >> 8);
|
|
*reply++ = (uint8_t)value;
|
|
context->m_replyCur = reply;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
@brief Add uint32 to reply packet
|
|
**/
|
|
static void sAddUInt32(uSynergyContext *context, uint32_t value)
|
|
{
|
|
uint8_t *reply = context->m_replyCur;
|
|
*reply++ = (uint8_t)(value >> 24);
|
|
*reply++ = (uint8_t)(value >> 16);
|
|
*reply++ = (uint8_t)(value >> 8);
|
|
*reply++ = (uint8_t)value;
|
|
context->m_replyCur = reply;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
@brief Send reply packet
|
|
**/
|
|
static uSynergyBool sSendReply(uSynergyContext *context)
|
|
{
|
|
// Set header size
|
|
uint8_t *reply_buf = context->m_replyBuffer;
|
|
uint32_t reply_len = (uint32_t)(context->m_replyCur - reply_buf); /* Total size of reply */
|
|
uint32_t body_len = reply_len - 4; /* Size of body */
|
|
uSynergyBool ret;
|
|
reply_buf[0] = (uint8_t)(body_len >> 24);
|
|
reply_buf[1] = (uint8_t)(body_len >> 16);
|
|
reply_buf[2] = (uint8_t)(body_len >> 8);
|
|
reply_buf[3] = (uint8_t)body_len;
|
|
|
|
// Send reply
|
|
ret = context->m_sendFunc(context->m_cookie, context->m_replyBuffer, reply_len);
|
|
|
|
// Reset reply buffer write pointer
|
|
context->m_replyCur = context->m_replyBuffer+4;
|
|
return ret;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
@brief Call mouse callback after a mouse event
|
|
**/
|
|
static void sSendMouseCallback(uSynergyContext *context)
|
|
{
|
|
// Skip if no callback is installed
|
|
if (context->m_mouseCallback == 0L)
|
|
return;
|
|
|
|
// Send callback
|
|
context->m_mouseCallback(context->m_cookie, context->m_mouseX, context->m_mouseY, context->m_mouseWheelX,
|
|
context->m_mouseWheelY, context->m_mouseButtonLeft, context->m_mouseButtonRight, context->m_mouseButtonMiddle);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
@brief Send keyboard callback when a key has been pressed or released
|
|
**/
|
|
static void sSendKeyboardCallback(uSynergyContext *context, uint16_t key, uint16_t modifiers, uSynergyBool down, uSynergyBool repeat)
|
|
{
|
|
// Skip if no callback is installed
|
|
if (context->m_keyboardCallback == 0L)
|
|
return;
|
|
|
|
// Send callback
|
|
context->m_keyboardCallback(context->m_cookie, key, modifiers, down, repeat);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
@brief Send joystick callback
|
|
**/
|
|
static void sSendJoystickCallback(uSynergyContext *context, uint8_t joyNum)
|
|
{
|
|
int8_t *sticks;
|
|
|
|
// Skip if no callback is installed
|
|
if (context->m_joystickCallback == 0L)
|
|
return;
|
|
|
|
// Send callback
|
|
sticks = context->m_joystickSticks[joyNum];
|
|
context->m_joystickCallback(context->m_cookie, joyNum, context->m_joystickButtons[joyNum], sticks[0], sticks[1], sticks[2], sticks[3]);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
@brief Parse a single client message, update state, send callbacks and send replies
|
|
**/
|
|
#define USYNERGY_IS_PACKET(pkt_id) memcmp(message+4, pkt_id, 4)==0
|
|
static void sProcessMessage(uSynergyContext *context, const uint8_t *message)
|
|
{
|
|
// We have a packet!
|
|
if (memcmp(message+4, "Synergy", 7)==0)
|
|
{
|
|
// Welcome message
|
|
// kMsgHello = "Synergy%2i%2i"
|
|
// kMsgHelloBack = "Synergy%2i%2i%s"
|
|
sAddString(context, "Synergy");
|
|
sAddUInt16(context, USYNERGY_PROTOCOL_MAJOR);
|
|
sAddUInt16(context, USYNERGY_PROTOCOL_MINOR);
|
|
sAddUInt32(context, (uint32_t)strlen(context->m_clientName));
|
|
sAddString(context, context->m_clientName);
|
|
if (!sSendReply(context))
|
|
{
|
|
// Send reply failed, let's try to reconnect
|
|
sTrace(context, "SendReply failed, trying to reconnect in a second");
|
|
context->m_connected = USYNERGY_FALSE;
|
|
context->m_sleepFunc(context->m_cookie, 1000);
|
|
}
|
|
else
|
|
{
|
|
// Let's assume we're connected
|
|
char buffer[256+1];
|
|
sprintf(buffer, "Connected as client \"%s\"", context->m_clientName);
|
|
sTrace(context, buffer);
|
|
context->m_hasReceivedHello = USYNERGY_TRUE;
|
|
}
|
|
return;
|
|
}
|
|
else if (USYNERGY_IS_PACKET("QINF"))
|
|
{
|
|
// Screen info. Reply with DINF
|
|
// kMsgQInfo = "QINF"
|
|
// kMsgDInfo = "DINF%2i%2i%2i%2i%2i%2i%2i"
|
|
uint16_t x = 0, y = 0, warp = 0;
|
|
sAddString(context, "DINF");
|
|
sAddUInt16(context, x);
|
|
sAddUInt16(context, y);
|
|
sAddUInt16(context, context->m_clientWidth);
|
|
sAddUInt16(context, context->m_clientHeight);
|
|
sAddUInt16(context, warp);
|
|
sAddUInt16(context, 0); // mx?
|
|
sAddUInt16(context, 0); // my?
|
|
sSendReply(context);
|
|
return;
|
|
}
|
|
else if (USYNERGY_IS_PACKET("CIAK"))
|
|
{
|
|
// Do nothing?
|
|
// kMsgCInfoAck = "CIAK"
|
|
return;
|
|
}
|
|
else if (USYNERGY_IS_PACKET("CROP"))
|
|
{
|
|
// Do nothing?
|
|
// kMsgCResetOptions = "CROP"
|
|
return;
|
|
}
|
|
else if (USYNERGY_IS_PACKET("CINN"))
|
|
{
|
|
// Screen enter. Reply with CNOP
|
|
// kMsgCEnter = "CINN%2i%2i%4i%2i"
|
|
|
|
// Obtain the Synergy sequence number
|
|
context->m_sequenceNumber = sNetToNative32(message + 12);
|
|
context->m_isCaptured = USYNERGY_TRUE;
|
|
|
|
// Call callback
|
|
if (context->m_screenActiveCallback != 0L)
|
|
context->m_screenActiveCallback(context->m_cookie, USYNERGY_TRUE);
|
|
}
|
|
else if (USYNERGY_IS_PACKET("COUT"))
|
|
{
|
|
// Screen leave
|
|
// kMsgCLeave = "COUT"
|
|
context->m_isCaptured = USYNERGY_FALSE;
|
|
|
|
// Call callback
|
|
if (context->m_screenActiveCallback != 0L)
|
|
context->m_screenActiveCallback(context->m_cookie, USYNERGY_FALSE);
|
|
}
|
|
else if (USYNERGY_IS_PACKET("DMDN"))
|
|
{
|
|
// Mouse down
|
|
// kMsgDMouseDown = "DMDN%1i"
|
|
char btn = message[8]-1;
|
|
if (btn==2)
|
|
context->m_mouseButtonRight = USYNERGY_TRUE;
|
|
else if (btn==1)
|
|
context->m_mouseButtonMiddle = USYNERGY_TRUE;
|
|
else
|
|
context->m_mouseButtonLeft = USYNERGY_TRUE;
|
|
sSendMouseCallback(context);
|
|
}
|
|
else if (USYNERGY_IS_PACKET("DMUP"))
|
|
{
|
|
// Mouse up
|
|
// kMsgDMouseUp = "DMUP%1i"
|
|
char btn = message[8]-1;
|
|
if (btn==2)
|
|
context->m_mouseButtonRight = USYNERGY_FALSE;
|
|
else if (btn==1)
|
|
context->m_mouseButtonMiddle = USYNERGY_FALSE;
|
|
else
|
|
context->m_mouseButtonLeft = USYNERGY_FALSE;
|
|
sSendMouseCallback(context);
|
|
}
|
|
else if (USYNERGY_IS_PACKET("DMMV"))
|
|
{
|
|
// Mouse move. Reply with CNOP
|
|
// kMsgDMouseMove = "DMMV%2i%2i"
|
|
context->m_mouseX = sNetToNative16(message+8);
|
|
context->m_mouseY = sNetToNative16(message+10);
|
|
sSendMouseCallback(context);
|
|
}
|
|
else if (USYNERGY_IS_PACKET("DMWM"))
|
|
{
|
|
// Mouse wheel
|
|
// kMsgDMouseWheel = "DMWM%2i%2i"
|
|
// kMsgDMouseWheel1_0 = "DMWM%2i"
|
|
context->m_mouseWheelX += sNetToNative16(message+8);
|
|
context->m_mouseWheelY += sNetToNative16(message+10);
|
|
sSendMouseCallback(context);
|
|
}
|
|
else if (USYNERGY_IS_PACKET("DKDN"))
|
|
{
|
|
// Key down
|
|
// kMsgDKeyDown = "DKDN%2i%2i%2i"
|
|
// kMsgDKeyDown1_0 = "DKDN%2i%2i"
|
|
//uint16_t id = sNetToNative16(message+8);
|
|
uint16_t mod = sNetToNative16(message+10);
|
|
uint16_t key = sNetToNative16(message+12);
|
|
sSendKeyboardCallback(context, key, mod, USYNERGY_TRUE, USYNERGY_FALSE);
|
|
}
|
|
else if (USYNERGY_IS_PACKET("DKRP"))
|
|
{
|
|
// Key repeat
|
|
// kMsgDKeyRepeat = "DKRP%2i%2i%2i%2i"
|
|
// kMsgDKeyRepeat1_0 = "DKRP%2i%2i%2i"
|
|
uint16_t mod = sNetToNative16(message+10);
|
|
// uint16_t count = sNetToNative16(message+12);
|
|
uint16_t key = sNetToNative16(message+14);
|
|
sSendKeyboardCallback(context, key, mod, USYNERGY_TRUE, USYNERGY_TRUE);
|
|
}
|
|
else if (USYNERGY_IS_PACKET("DKUP"))
|
|
{
|
|
// Key up
|
|
// kMsgDKeyUp = "DKUP%2i%2i%2i"
|
|
// kMsgDKeyUp1_0 = "DKUP%2i%2i"
|
|
//uint16 id=Endian::sNetToNative(sbuf[4]);
|
|
uint16_t mod = sNetToNative16(message+10);
|
|
uint16_t key = sNetToNative16(message+12);
|
|
sSendKeyboardCallback(context, key, mod, USYNERGY_FALSE, USYNERGY_FALSE);
|
|
}
|
|
else if (USYNERGY_IS_PACKET("DGBT"))
|
|
{
|
|
// Joystick buttons
|
|
// kMsgDGameButtons = "DGBT%1i%2i";
|
|
uint8_t joy_num = message[8];
|
|
if (joy_num<USYNERGY_NUM_JOYSTICKS)
|
|
{
|
|
// Copy button state, then send callback
|
|
context->m_joystickButtons[joy_num] = (message[9] << 8) | message[10];
|
|
sSendJoystickCallback(context, joy_num);
|
|
}
|
|
}
|
|
else if (USYNERGY_IS_PACKET("DGST"))
|
|
{
|
|
// Joystick sticks
|
|
// kMsgDGameSticks = "DGST%1i%1i%1i%1i%1i";
|
|
uint8_t joy_num = message[8];
|
|
if (joy_num<USYNERGY_NUM_JOYSTICKS)
|
|
{
|
|
// Copy stick state, then send callback
|
|
memcpy(context->m_joystickSticks[joy_num], message+9, 4);
|
|
sSendJoystickCallback(context, joy_num);
|
|
}
|
|
}
|
|
else if (USYNERGY_IS_PACKET("DSOP"))
|
|
{
|
|
// Set options
|
|
// kMsgDSetOptions = "DSOP%4I"
|
|
}
|
|
else if (USYNERGY_IS_PACKET("CALV"))
|
|
{
|
|
// Keepalive, reply with CALV and then CNOP
|
|
// kMsgCKeepAlive = "CALV"
|
|
sAddString(context, "CALV");
|
|
sSendReply(context);
|
|
// now reply with CNOP
|
|
}
|
|
else if (USYNERGY_IS_PACKET("DCLP"))
|
|
{
|
|
// Clipboard message
|
|
// kMsgDClipboard = "DCLP%1i%4i%s"
|
|
//
|
|
// The clipboard message contains:
|
|
// 1 uint32: The size of the message
|
|
// 4 chars: The identifier ("DCLP")
|
|
// 1 uint8: The clipboard index
|
|
// 1 uint32: The sequence number. It's zero, because this message is always coming from the server?
|
|
// 1 uint32: The total size of the remaining 'string' (as per the Synergy %s string format (which is 1 uint32 for size followed by a char buffer (not necessarily null terminated)).
|
|
// 1 uint32: The number of formats present in the message
|
|
// And then 'number of formats' times the following:
|
|
// 1 uint32: The format of the clipboard data
|
|
// 1 uint32: The size n of the clipboard data
|
|
// n uint8: The clipboard data
|
|
const uint8_t * parse_msg = message+17;
|
|
uint32_t num_formats = sNetToNative32(parse_msg);
|
|
parse_msg += 4;
|
|
for (; num_formats; num_formats--)
|
|
{
|
|
// Parse clipboard format header
|
|
uint32_t format = sNetToNative32(parse_msg);
|
|
uint32_t size = sNetToNative32(parse_msg+4);
|
|
parse_msg += 8;
|
|
|
|
// Call callback
|
|
if (context->m_clipboardCallback)
|
|
context->m_clipboardCallback(context->m_cookie, format, parse_msg, size);
|
|
|
|
parse_msg += size;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Unknown packet, could be any of these
|
|
// kMsgCNoop = "CNOP"
|
|
// kMsgCClose = "CBYE"
|
|
// kMsgCClipboard = "CCLP%1i%4i"
|
|
// kMsgCScreenSaver = "CSEC%1i"
|
|
// kMsgDKeyRepeat = "DKRP%2i%2i%2i%2i"
|
|
// kMsgDKeyRepeat1_0 = "DKRP%2i%2i%2i"
|
|
// kMsgDMouseRelMove = "DMRM%2i%2i"
|
|
// kMsgEIncompatible = "EICV%2i%2i"
|
|
// kMsgEBusy = "EBSY"
|
|
// kMsgEUnknown = "EUNK"
|
|
// kMsgEBad = "EBAD"
|
|
char buffer[64];
|
|
sprintf(buffer, "Unknown packet '%c%c%c%c'", message[4], message[5], message[6], message[7]);
|
|
sTrace(context, buffer);
|
|
return;
|
|
}
|
|
|
|
// Reply with CNOP maybe?
|
|
sAddString(context, "CNOP");
|
|
sSendReply(context);
|
|
}
|
|
#undef USYNERGY_IS_PACKET
|
|
|
|
|
|
|
|
/**
|
|
@brief Mark context as being disconnected
|
|
**/
|
|
static void sSetDisconnected(uSynergyContext *context)
|
|
{
|
|
context->m_connected = USYNERGY_FALSE;
|
|
context->m_hasReceivedHello = USYNERGY_FALSE;
|
|
context->m_isCaptured = USYNERGY_FALSE;
|
|
context->m_replyCur = context->m_replyBuffer + 4;
|
|
context->m_sequenceNumber = 0;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
@brief Update a connected context
|
|
**/
|
|
static void sUpdateContext(uSynergyContext *context)
|
|
{
|
|
/* Receive data (blocking) */
|
|
int receive_size = USYNERGY_RECEIVE_BUFFER_SIZE - context->m_receiveOfs;
|
|
int num_received = 0;
|
|
int packlen = 0;
|
|
if (context->m_receiveFunc(context->m_cookie, context->m_receiveBuffer + context->m_receiveOfs, receive_size, &num_received) == USYNERGY_FALSE)
|
|
{
|
|
/* Receive failed, let's try to reconnect */
|
|
char buffer[128];
|
|
sprintf(buffer, "Receive failed (%d bytes asked, %d bytes received), trying to reconnect in a second", receive_size, num_received);
|
|
sTrace(context, buffer);
|
|
sSetDisconnected(context);
|
|
context->m_sleepFunc(context->m_cookie, 1000);
|
|
return;
|
|
}
|
|
context->m_receiveOfs += num_received;
|
|
|
|
/* If we didn't receive any data then we're probably still polling to get connected and
|
|
therefore not getting any data back. To avoid overloading the system with a Synergy
|
|
thread that would hammer on polling, we let it rest for a bit if there's no data. */
|
|
if (num_received == 0)
|
|
context->m_sleepFunc(context->m_cookie, 500);
|
|
|
|
/* Check for timeouts */
|
|
if (context->m_hasReceivedHello)
|
|
{
|
|
uint32_t cur_time = context->m_getTimeFunc();
|
|
if (num_received == 0)
|
|
{
|
|
/* Timeout after 2 secs of inactivity (we received no CALV) */
|
|
if ((cur_time - context->m_lastMessageTime) > USYNERGY_IDLE_TIMEOUT)
|
|
sSetDisconnected(context);
|
|
}
|
|
else
|
|
context->m_lastMessageTime = cur_time;
|
|
}
|
|
|
|
/* Eat packets */
|
|
for (;;)
|
|
{
|
|
/* Grab packet length and bail out if the packet goes beyond the end of the buffer */
|
|
packlen = sNetToNative32(context->m_receiveBuffer);
|
|
if (packlen+4 > context->m_receiveOfs)
|
|
break;
|
|
|
|
/* Process message */
|
|
sProcessMessage(context, context->m_receiveBuffer);
|
|
|
|
/* Move packet to front of buffer */
|
|
memmove(context->m_receiveBuffer, context->m_receiveBuffer+packlen+4, context->m_receiveOfs-packlen-4);
|
|
context->m_receiveOfs -= packlen+4;
|
|
}
|
|
|
|
/* Throw away over-sized packets */
|
|
if (packlen > USYNERGY_RECEIVE_BUFFER_SIZE)
|
|
{
|
|
/* Oversized packet, ditch tail end */
|
|
char buffer[128];
|
|
sprintf(buffer, "Oversized packet: '%c%c%c%c' (length %d)", context->m_receiveBuffer[4], context->m_receiveBuffer[5], context->m_receiveBuffer[6], context->m_receiveBuffer[7], packlen);
|
|
sTrace(context, buffer);
|
|
num_received = context->m_receiveOfs-4; // 4 bytes for the size field
|
|
while (num_received != packlen)
|
|
{
|
|
int buffer_left = packlen - num_received;
|
|
int to_receive = buffer_left < USYNERGY_RECEIVE_BUFFER_SIZE ? buffer_left : USYNERGY_RECEIVE_BUFFER_SIZE;
|
|
int ditch_received = 0;
|
|
if (context->m_receiveFunc(context->m_cookie, context->m_receiveBuffer, to_receive, &ditch_received) == USYNERGY_FALSE)
|
|
{
|
|
/* Receive failed, let's try to reconnect */
|
|
sTrace(context, "Receive failed, trying to reconnect in a second");
|
|
sSetDisconnected(context);
|
|
context->m_sleepFunc(context->m_cookie, 1000);
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
num_received += ditch_received;
|
|
}
|
|
}
|
|
context->m_receiveOfs = 0;
|
|
}
|
|
}
|
|
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
// Public interface
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
|
|
|
|
|
|
/**
|
|
@brief Initialize uSynergy context
|
|
**/
|
|
void uSynergyInit(uSynergyContext *context)
|
|
{
|
|
/* Zero memory */
|
|
memset(context, 0, sizeof(uSynergyContext));
|
|
|
|
/* Initialize to default state */
|
|
sSetDisconnected(context);
|
|
}
|
|
|
|
|
|
/**
|
|
@brief Update uSynergy
|
|
**/
|
|
void uSynergyUpdate(uSynergyContext *context)
|
|
{
|
|
if (context->m_connected)
|
|
{
|
|
/* Update context, receive data, call callbacks */
|
|
sUpdateContext(context);
|
|
}
|
|
else
|
|
{
|
|
/* Try to connect */
|
|
if (context->m_connectFunc(context->m_cookie))
|
|
context->m_connected = USYNERGY_TRUE;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
@brief Send clipboard data
|
|
**/
|
|
void uSynergySendClipboard(uSynergyContext *context, const char *text)
|
|
{
|
|
// Calculate maximum size that will fit in a reply packet
|
|
uint32_t overhead_size = 4 + /* Message size */
|
|
4 + /* Message ID */
|
|
1 + /* Clipboard index */
|
|
4 + /* Sequence number */
|
|
4 + /* Rest of message size (because it's a Synergy string from here on) */
|
|
4 + /* Number of clipboard formats */
|
|
4 + /* Clipboard format */
|
|
4; /* Clipboard data length */
|
|
uint32_t max_length = USYNERGY_REPLY_BUFFER_SIZE - overhead_size;
|
|
|
|
// Clip text to max length
|
|
uint32_t text_length = (uint32_t)strlen(text);
|
|
if (text_length > max_length)
|
|
{
|
|
char buffer[128];
|
|
sprintf(buffer, "Clipboard buffer too small, clipboard truncated at %d characters", max_length);
|
|
sTrace(context, buffer);
|
|
text_length = max_length;
|
|
}
|
|
|
|
// Assemble packet
|
|
sAddString(context, "DCLP");
|
|
sAddUInt8(context, 0); /* Clipboard index */
|
|
sAddUInt32(context, context->m_sequenceNumber);
|
|
sAddUInt32(context, 4+4+4+text_length); /* Rest of message size: numFormats, format, length, data */
|
|
sAddUInt32(context, 1); /* Number of formats (only text for now) */
|
|
sAddUInt32(context, USYNERGY_CLIPBOARD_FORMAT_TEXT);
|
|
sAddUInt32(context, text_length);
|
|
sAddString(context, text);
|
|
sSendReply(context);
|
|
}
|