Normalize all the line endings.
(cherry picked from commit f1772d44be09fd78bf5f1ebda44b39b96180d319)
diff --git a/examples/example_sdl_directx11/example_sdl_directx11.vcxproj b/examples/example_sdl_directx11/example_sdl_directx11.vcxproj
index e28a5d2..7af2c9c 100644
--- a/examples/example_sdl_directx11/example_sdl_directx11.vcxproj
+++ b/examples/example_sdl_directx11/example_sdl_directx11.vcxproj
@@ -1,181 +1,181 @@
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+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+ <ItemGroup Label="ProjectConfigurations">
+ <ProjectConfiguration Include="Debug|Win32">
+ <Configuration>Debug</Configuration>
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+ <Platform>x64</Platform>
+ </ProjectConfiguration>
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+ <ProjectConfiguration Include="Release|x64">
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+ <ProjectGuid>{9E1987E3-1F19-45CA-B9C9-D31E791836D8}</ProjectGuid>
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+ <ClCompile Include="..\imgui_impl_dx11.cpp" />
+ <ClCompile Include="..\imgui_impl_sdl.cpp" />
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\ No newline at end of file
diff --git a/examples/example_sdl_directx11/example_sdl_directx11.vcxproj.filters b/examples/example_sdl_directx11/example_sdl_directx11.vcxproj.filters
index b234506..879f0db 100644
--- a/examples/example_sdl_directx11/example_sdl_directx11.vcxproj.filters
+++ b/examples/example_sdl_directx11/example_sdl_directx11.vcxproj.filters
@@ -1,57 +1,57 @@
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+ <Filter>imgui</Filter>
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+ <Filter>sources</Filter>
+ </ClCompile>
+ </ItemGroup>
+ <ItemGroup>
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</Project>
\ No newline at end of file
diff --git a/examples/libs/usynergy/uSynergy.c b/examples/libs/usynergy/uSynergy.c
index a8d01da..8dce47b 100644
--- a/examples/libs/usynergy/uSynergy.c
+++ b/examples/libs/usynergy/uSynergy.c
@@ -1,636 +1,636 @@
-/*
-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);
-}
+/*
+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);
+}
