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/*
* barrier -- mouse and keyboard sharing utility
* Copyright (C) 2013-2016 Symless 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 LICENSE 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 "barrier/StreamChunker.h"
#include "mt/Lock.h"
#include "mt/Mutex.h"
#include "barrier/FileChunk.h"
#include "barrier/ClipboardChunk.h"
#include "barrier/protocol_types.h"
#include "base/EventTypes.h"
#include "base/Event.h"
#include "base/IEventQueue.h"
#include "base/EventTypes.h"
#include "base/Log.h"
#include "base/Stopwatch.h"
#include "base/String.h"
#include "common/stdexcept.h"
#include <fstream>
using namespace std;
static const size_t g_chunkSize = 32 * 1024; //32kb
bool StreamChunker::s_isChunkingFile = false;
bool StreamChunker::s_interruptFile = false;
Mutex* StreamChunker::s_interruptMutex = NULL;
void
StreamChunker::sendFile(
char* filename,
IEventQueue* events,
void* eventTarget)
{
s_isChunkingFile = true;
std::fstream file(static_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)
String fileSize = barrier::string::sizeTypeToString(size);
FileChunk* sizeMessage = FileChunk::start(fileSize);
events->addEvent(Event(events->forFile().fileChunkSending(), eventTarget, sizeMessage));
// send chunk messages with a fixed chunk size
size_t sentLength = 0;
size_t chunkSize = g_chunkSize;
file.seekg (0, std::ios::beg);
while (true) {
if (s_interruptFile) {
s_interruptFile = false;
LOG((CLOG_DEBUG "file transmission interrupted"));
break;
}
events->addEvent(Event(events->forFile().keepAlive(), eventTarget));
// make sure we don't read too much from the mock data.
if (sentLength + chunkSize > size) {
chunkSize = size - sentLength;
}
char* chunkData = new char[chunkSize];
file.read(chunkData, chunkSize);
UInt8* data = reinterpret_cast<UInt8*>(chunkData);
FileChunk* fileChunk = FileChunk::data(data, chunkSize);
delete[] chunkData;
events->addEvent(Event(events->forFile().fileChunkSending(), eventTarget, fileChunk));
sentLength += chunkSize;
file.seekg (sentLength, std::ios::beg);
if (sentLength == size) {
break;
}
}
// send last message
FileChunk* end = FileChunk::end();
events->addEvent(Event(events->forFile().fileChunkSending(), eventTarget, end));
file.close();
s_isChunkingFile = false;
}
void
StreamChunker::sendClipboard(
String& data,
size_t size,
ClipboardID id,
UInt32 sequence,
IEventQueue* events,
void* eventTarget)
{
// send first message (data size)
String dataSize = barrier::string::sizeTypeToString(size);
ClipboardChunk* sizeMessage = ClipboardChunk::start(id, sequence, dataSize);
events->addEvent(Event(events->forClipboard().clipboardSending(), eventTarget, sizeMessage));
// send clipboard chunk with a fixed size
size_t sentLength = 0;
size_t chunkSize = g_chunkSize;
while (true) {
events->addEvent(Event(events->forFile().keepAlive(), eventTarget));
// make sure we don't read too much from the mock data.
if (sentLength + chunkSize > size) {
chunkSize = size - sentLength;
}
String chunk(data.substr(sentLength, chunkSize).c_str(), chunkSize);
ClipboardChunk* dataChunk = ClipboardChunk::data(id, sequence, chunk);
events->addEvent(Event(events->forClipboard().clipboardSending(), eventTarget, dataChunk));
sentLength += chunkSize;
if (sentLength == size) {
break;
}
}
// send last message
ClipboardChunk* end = ClipboardChunk::end(id, sequence);
events->addEvent(Event(events->forClipboard().clipboardSending(), eventTarget, end));
LOG((CLOG_DEBUG "sent clipboard size=%d", sentLength));
}
void
StreamChunker::interruptFile()
{
if (s_isChunkingFile) {
s_interruptFile = true;
LOG((CLOG_INFO "previous dragged file has become invalid"));
}
}
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