Patch by Jerry:

- Fixed line endings
- Integ test for file transfer
- Fixed crashed problem when log info is larger than 2048 bytes
- Fixed compile error caused by std exception (by Feng ye)
- Fixed include path on Mac and linux (by Feng ye)

src/lib/synergy/CFileChunker.cpp

@@ -0,0 +1,100 @@
+/*
+ * synergy -- mouse and keyboard sharing utility
+ * Copyright (C) 2013 Bolton Software Ltd.
+ * 
+ * This package is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * found in the file COPYING that should have accompanied this file.
+ * 
+ * This package 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "CFileChunker.h"
+#include "BasicTypes.h"
+#include "ProtocolTypes.h"
+#include "CEvent.h"
+#include "IEventQueue.h"
+#include "CEventTypes.h"
+#include "CLOG.h"
+#include <fstream>
+#include <sstream>
+
+using namespace std;
+
+const size_t CFileChunker::m_chunkSize = 512 * 1024; // 512kb
+
+void
+CFileChunker::sendFileChunks(char* filename, IEventQueue* events, void* eventTarget)
+{
+	std::fstream file(reinterpret_cast<char*>(filename), std::ios::in | std::ios::binary);
+
+	if (!file.is_open()) {
+		throw runtime_error("failed to open file");
+	}
+
+	// check file size
+	file.seekg (0, std::ios::end);
+	size_t size = (size_t)file.tellg();
+
+	// send first message (file size)
+	CString fileSize = intToString(size);
+	UInt32 sizeLength = fileSize.size();
+	CFileChunk* sizeMessage = new CFileChunk(sizeLength + 2);
+	char* chunkData = sizeMessage->m_chunk;
+
+	chunkData[0] = kFileStart;
+	memcpy(&chunkData[1], fileSize.c_str(), sizeLength);
+	chunkData[sizeLength + 1] = '\0';
+	events->addEvent(CEvent(events->forIScreen().fileChunkSending(), eventTarget, sizeMessage));
+
+	// send chunk messages with a fixed chunk size
+	size_t sentLength = 0;
+	size_t chunkSize = m_chunkSize;
+	file.seekg (0, std::ios::beg);
+	while (true) {
+		// make sure we don't read too much from the mock data.
+		if (sentLength + chunkSize > size) {
+			chunkSize = size - sentLength;
+		}
+
+		// for fileChunk->m_chunk, the first byte is the chunk mark, last is \0
+		CFileChunk* fileChunk = new CFileChunk(chunkSize + 2);
+		char* chunkData = fileChunk->m_chunk;
+
+		chunkData[0] = kFileChunk;
+		file.read(&chunkData[1], chunkSize);
+		chunkData[chunkSize + 1] = '\0';
+		events->addEvent(CEvent(events->forIScreen().fileChunkSending(), eventTarget, fileChunk));
+
+		sentLength += chunkSize;
+		file.seekg (sentLength, std::ios::beg);
+
+		if (sentLength == size) {
+			break;
+		}
+	}
+
+	// send last message
+	CFileChunk* transferFinished = new CFileChunk(2);
+	chunkData = transferFinished->m_chunk;
+
+	chunkData[0] = kFileEnd;
+	chunkData[1] = '\0';
+	events->addEvent(CEvent(events->forIScreen().fileChunkSending(), eventTarget, transferFinished));
+
+	file.close();
+}
+
+CString
+CFileChunker::intToString(size_t i)
+{
+	stringstream ss;
+	ss << i;
+	return ss.str();
+}