mirror of
https://github.com/hyperion-project/hyperion.ng.git
synced 2023-10-10 13:36:59 +02:00
590 lines
16 KiB
C++
590 lines
16 KiB
C++
// system includes
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#include <stdexcept>
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#include <cassert>
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// stl includes
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#include <iostream>
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#include <sstream>
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#include <iterator>
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// Qt includes
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#include <QResource>
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#include <QDateTime>
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#include <QCryptographicHash>
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#include <QHostInfo>
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// hyperion util includes
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#include <hyperion/ImageProcessorFactory.h>
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#include <hyperion/ImageProcessor.h>
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#include <hyperion/ColorTransform.h>
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#include <utils/ColorRgb.h>
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// project includes
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#include "JsonClientConnection.h"
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JsonClientConnection::JsonClientConnection(QTcpSocket *socket, Hyperion * hyperion) :
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QObject(),
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_socket(socket),
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_imageProcessor(ImageProcessorFactory::getInstance().newImageProcessor()),
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_hyperion(hyperion),
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_receiveBuffer(),
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_webSocketHandshakeDone(false)
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{
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// connect internal signals and slots
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connect(_socket, SIGNAL(disconnected()), this, SLOT(socketClosed()));
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connect(_socket, SIGNAL(readyRead()), this, SLOT(readData()));
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}
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JsonClientConnection::~JsonClientConnection()
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{
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delete _socket;
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}
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void JsonClientConnection::readData()
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{
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_receiveBuffer += _socket->readAll();
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if (_webSocketHandshakeDone)
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{
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// websocket mode, data frame
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handleWebSocketFrame();
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} else
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{
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// might be a handshake request or raw socket data
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if(_receiveBuffer.contains("Upgrade: websocket"))
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{
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doWebSocketHandshake();
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} else
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{
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// raw socket data, handling as usual
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int bytes = _receiveBuffer.indexOf('\n') + 1;
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while(bytes > 0)
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{
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// create message string
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std::string message(_receiveBuffer.data(), bytes);
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// remove message data from buffer
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_receiveBuffer = _receiveBuffer.mid(bytes);
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// handle message
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handleMessage(message);
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// try too look up '\n' again
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bytes = _receiveBuffer.indexOf('\n') + 1;
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}
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}
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}
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}
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void JsonClientConnection::handleWebSocketFrame()
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{
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if ((_receiveBuffer.at(0) & 0x80) == 0x80)
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{
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// final bit found, frame complete
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quint8 * maskKey = NULL;
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quint8 opCode = _receiveBuffer.at(0) & 0x0F;
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bool isMasked = (_receiveBuffer.at(1) & 0x80) == 0x80;
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quint64 payloadLength = _receiveBuffer.at(1) & 0x7F;
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quint32 index = 2;
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switch (payloadLength)
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{
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case 126:
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payloadLength = ((_receiveBuffer.at(2) << 8) & 0xFF00) | (_receiveBuffer.at(3) & 0xFF);
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index += 2;
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break;
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case 127:
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payloadLength = 0;
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for (uint i=0; i < 8; i++) {
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payloadLength |= ((quint64)(_receiveBuffer.at(index+i) & 0xFF)) << (8*(7-i));
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}
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index += 8;
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break;
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default:
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break;
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}
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if (isMasked)
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{
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// if the data is masked we need to get the key for unmasking
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maskKey = new quint8[4];
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for (uint i=0; i < 4; i++)
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{
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maskKey[i] = _receiveBuffer.at(index + i);
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}
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index += 4;
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}
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// check the type of data frame
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switch (opCode)
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{
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case 0x01:
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{
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// frame contains text, extract it
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QByteArray result = _receiveBuffer.mid(index, payloadLength);
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_receiveBuffer.clear();
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// unmask data if necessary
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if (isMasked)
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{
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for (uint i=0; i < payloadLength; i++)
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{
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result[i] = (result[i] ^ maskKey[i % 4]);
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}
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if (maskKey != NULL)
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{
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delete[] maskKey;
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maskKey = NULL;
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}
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}
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handleMessage(QString(result).toStdString());
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}
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break;
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case 0x08:
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{
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// close request, confirm
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quint8 close[] = {0x88, 0};
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_socket->write((const char*)close, 2);
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_socket->flush();
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_socket->close();
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}
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break;
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case 0x09:
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{
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// ping received, send pong
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quint8 pong[] = {0x0A, 0};
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_socket->write((const char*)pong, 2);
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_socket->flush();
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}
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break;
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}
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} else
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{
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std::cout << "Someone is sending very big messages over several frames... it's not supported yet" << std::endl;
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quint8 close[] = {0x88, 0};
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_socket->write((const char*)close, 2);
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_socket->flush();
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_socket->close();
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}
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}
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void JsonClientConnection::doWebSocketHandshake()
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{
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// http header, might not be a very reliable check...
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std::cout << "Websocket handshake" << std::endl;
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// get the key to prepare an answer
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int start = _receiveBuffer.indexOf("Sec-WebSocket-Key") + 19;
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std::string value(_receiveBuffer.mid(start, _receiveBuffer.indexOf("\r\n", start) - start).data());
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_receiveBuffer.clear();
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// must be always appended
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value += "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
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// generate sha1 hash
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QByteArray hash = QCryptographicHash::hash(value.c_str(), QCryptographicHash::Sha1);
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// prepare an answer
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std::ostringstream h;
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h << "HTTP/1.1 101 Switching Protocols\r\n" <<
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"Upgrade: websocket\r\n" <<
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"Connection: Upgrade\r\n" <<
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"Sec-WebSocket-Accept: " << QString(hash.toBase64()).toStdString() << "\r\n\r\n";
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_socket->write(h.str().c_str());
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_socket->flush();
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// we are in WebSocket mode, data frames should follow next
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_webSocketHandshakeDone = true;
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}
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void JsonClientConnection::socketClosed()
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{
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_webSocketHandshakeDone = false;
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emit connectionClosed(this);
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}
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void JsonClientConnection::handleMessage(const std::string &messageString)
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{
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Json::Reader reader;
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Json::Value message;
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if (!reader.parse(messageString, message, false))
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{
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sendErrorReply("Error while parsing json: " + reader.getFormattedErrorMessages());
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return;
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}
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// check basic message
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std::string errors;
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if (!checkJson(message, ":schema", errors))
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{
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sendErrorReply("Error while validating json: " + errors);
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return;
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}
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// check specific message
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const std::string command = message["command"].asString();
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if (!checkJson(message, QString(":schema-%1").arg(QString::fromStdString(command)), errors))
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{
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sendErrorReply("Error while validating json: " + errors);
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return;
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}
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// switch over all possible commands and handle them
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if (command == "color")
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handleColorCommand(message);
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else if (command == "image")
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handleImageCommand(message);
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else if (command == "effect")
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handleEffectCommand(message);
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else if (command == "serverinfo")
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handleServerInfoCommand(message);
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else if (command == "clear")
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handleClearCommand(message);
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else if (command == "clearall")
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handleClearallCommand(message);
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else if (command == "transform")
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handleTransformCommand(message);
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else
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handleNotImplemented();
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}
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void JsonClientConnection::handleColorCommand(const Json::Value &message)
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{
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// extract parameters
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int priority = message["priority"].asInt();
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int duration = message.get("duration", -1).asInt();
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std::vector<ColorRgb> colorData(_hyperion->getLedCount());
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const Json::Value & jsonColor = message["color"];
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Json::UInt i = 0;
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for (; i < jsonColor.size()/3 && i < _hyperion->getLedCount(); ++i)
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{
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colorData[i].red = uint8_t(message["color"][3u*i].asInt());
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colorData[i].green = uint8_t(message["color"][3u*i+1u].asInt());
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colorData[i].blue = uint8_t(message["color"][3u*i+2u].asInt());
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}
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// copy full blocks of led colors
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unsigned size = i;
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while (i + size < _hyperion->getLedCount())
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{
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memcpy(&(colorData[i]), colorData.data(), size * sizeof(ColorRgb));
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i += size;
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}
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// copy remaining block of led colors
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if (i < _hyperion->getLedCount())
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{
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memcpy(&(colorData[i]), colorData.data(), (_hyperion->getLedCount()-i) * sizeof(ColorRgb));
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}
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// set output
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_hyperion->setColors(priority, colorData, duration);
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// send reply
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sendSuccessReply();
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}
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void JsonClientConnection::handleImageCommand(const Json::Value &message)
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{
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// extract parameters
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int priority = message["priority"].asInt();
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int duration = message.get("duration", -1).asInt();
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int width = message["imagewidth"].asInt();
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int height = message["imageheight"].asInt();
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QByteArray data = QByteArray::fromBase64(QByteArray(message["imagedata"].asCString()));
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// check consistency of the size of the received data
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if (data.size() != width*height*3)
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{
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sendErrorReply("Size of image data does not match with the width and height");
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return;
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}
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// set width and height of the image processor
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_imageProcessor->setSize(width, height);
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// create ImageRgb
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Image<ColorRgb> image(width, height);
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memcpy(image.memptr(), data.data(), data.size());
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// process the image
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std::vector<ColorRgb> ledColors = _imageProcessor->process(image);
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_hyperion->setColors(priority, ledColors, duration);
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// send reply
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sendSuccessReply();
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}
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void JsonClientConnection::handleEffectCommand(const Json::Value &message)
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{
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// extract parameters
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int priority = message["priority"].asInt();
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int duration = message.get("duration", -1).asInt();
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const Json::Value & effect = message["effect"];
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const std::string & effectName = effect["name"].asString();
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// set output
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if (effect.isMember("args"))
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{
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_hyperion->setEffect(effectName, effect["args"], priority, duration);
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}
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else
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{
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_hyperion->setEffect(effectName, priority, duration);
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}
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// send reply
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sendSuccessReply();
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}
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void JsonClientConnection::handleServerInfoCommand(const Json::Value &)
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{
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// create result
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Json::Value result;
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result["success"] = true;
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Json::Value & info = result["info"];
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// add host name for remote clients
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info["hostname"] = QHostInfo::localHostName().toStdString();
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// collect priority information
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Json::Value & priorities = info["priorities"] = Json::Value(Json::arrayValue);
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uint64_t now = QDateTime::currentMSecsSinceEpoch();
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QList<int> activePriorities = _hyperion->getActivePriorities();
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foreach (int priority, activePriorities) {
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const Hyperion::InputInfo & priorityInfo = _hyperion->getPriorityInfo(priority);
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Json::Value & item = priorities[priorities.size()];
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item["priority"] = priority;
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if (priorityInfo.timeoutTime_ms != -1)
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{
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item["duration_ms"] = Json::Value::UInt(priorityInfo.timeoutTime_ms - now);
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}
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}
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// collect transform information
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Json::Value & transformArray = info["transform"];
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for (const std::string& transformId : _hyperion->getTransformIds())
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{
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const ColorTransform * colorTransform = _hyperion->getTransform(transformId);
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if (colorTransform == nullptr)
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{
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std::cerr << "Incorrect color transform id: " << transformId << std::endl;
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continue;
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}
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Json::Value & transform = transformArray.append(Json::Value());
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transform["id"] = transformId;
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transform["saturationGain"] = colorTransform->_hsvTransform.getSaturationGain();
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transform["valueGain"] = colorTransform->_hsvTransform.getValueGain();
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Json::Value & threshold = transform["threshold"];
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threshold.append(colorTransform->_rgbRedTransform.getThreshold());
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threshold.append(colorTransform->_rgbGreenTransform.getThreshold());
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threshold.append(colorTransform->_rgbBlueTransform.getThreshold());
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Json::Value & gamma = transform["gamma"];
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gamma.append(colorTransform->_rgbRedTransform.getGamma());
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gamma.append(colorTransform->_rgbGreenTransform.getGamma());
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gamma.append(colorTransform->_rgbBlueTransform.getGamma());
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Json::Value & blacklevel = transform["blacklevel"];
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blacklevel.append(colorTransform->_rgbRedTransform.getBlacklevel());
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blacklevel.append(colorTransform->_rgbGreenTransform.getBlacklevel());
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blacklevel.append(colorTransform->_rgbBlueTransform.getBlacklevel());
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Json::Value & whitelevel = transform["whitelevel"];
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whitelevel.append(colorTransform->_rgbRedTransform.getWhitelevel());
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whitelevel.append(colorTransform->_rgbGreenTransform.getWhitelevel());
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whitelevel.append(colorTransform->_rgbBlueTransform.getWhitelevel());
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}
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// collect effect info
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Json::Value & effects = info["effects"] = Json::Value(Json::arrayValue);
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const std::list<EffectDefinition> & effectsDefinitions = _hyperion->getEffects();
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for (const EffectDefinition & effectDefinition : effectsDefinitions)
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{
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Json::Value effect;
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effect["name"] = effectDefinition.name;
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effect["script"] = effectDefinition.script;
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effect["args"] = effectDefinition.args;
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effects.append(effect);
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}
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// send the result
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sendMessage(result);
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}
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void JsonClientConnection::handleClearCommand(const Json::Value &message)
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{
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// extract parameters
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int priority = message["priority"].asInt();
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// clear priority
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_hyperion->clear(priority);
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// send reply
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sendSuccessReply();
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}
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void JsonClientConnection::handleClearallCommand(const Json::Value &)
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{
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// clear priority
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_hyperion->clearall();
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// send reply
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sendSuccessReply();
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}
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void JsonClientConnection::handleTransformCommand(const Json::Value &message)
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{
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const Json::Value & transform = message["transform"];
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const std::string transformId = transform.get("id", _hyperion->getTransformIds().front()).asString();
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ColorTransform * colorTransform = _hyperion->getTransform(transformId);
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if (colorTransform == nullptr)
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{
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//sendErrorReply(std::string("Incorrect transform identifier: ") + transformId);
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return;
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}
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if (transform.isMember("saturationGain"))
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{
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colorTransform->_hsvTransform.setSaturationGain(transform["saturationGain"].asDouble());
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}
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if (transform.isMember("valueGain"))
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{
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colorTransform->_hsvTransform.setValueGain(transform["valueGain"].asDouble());
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}
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if (transform.isMember("threshold"))
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{
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const Json::Value & values = transform["threshold"];
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colorTransform->_rgbRedTransform .setThreshold(values[0u].asDouble());
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colorTransform->_rgbGreenTransform.setThreshold(values[1u].asDouble());
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colorTransform->_rgbBlueTransform .setThreshold(values[2u].asDouble());
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}
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if (transform.isMember("gamma"))
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{
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const Json::Value & values = transform["gamma"];
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colorTransform->_rgbRedTransform .setGamma(values[0u].asDouble());
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colorTransform->_rgbGreenTransform.setGamma(values[1u].asDouble());
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colorTransform->_rgbBlueTransform .setGamma(values[2u].asDouble());
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}
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if (transform.isMember("blacklevel"))
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{
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const Json::Value & values = transform["blacklevel"];
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colorTransform->_rgbRedTransform .setBlacklevel(values[0u].asDouble());
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colorTransform->_rgbGreenTransform.setBlacklevel(values[1u].asDouble());
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colorTransform->_rgbBlueTransform .setBlacklevel(values[2u].asDouble());
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}
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if (transform.isMember("whitelevel"))
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{
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const Json::Value & values = transform["whitelevel"];
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colorTransform->_rgbRedTransform .setWhitelevel(values[0u].asDouble());
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colorTransform->_rgbGreenTransform.setWhitelevel(values[1u].asDouble());
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colorTransform->_rgbBlueTransform .setWhitelevel(values[2u].asDouble());
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}
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// commit the changes
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_hyperion->transformsUpdated();
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sendSuccessReply();
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}
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void JsonClientConnection::handleNotImplemented()
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{
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sendErrorReply("Command not implemented");
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}
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void JsonClientConnection::sendMessage(const Json::Value &message)
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{
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Json::FastWriter writer;
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std::string serializedReply = writer.write(message);
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if (!_webSocketHandshakeDone)
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{
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// raw tcp socket mode
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_socket->write(serializedReply.data(), serializedReply.length());
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} else
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{
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// websocket mode
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quint32 size = serializedReply.length();
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// prepare data frame
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QByteArray response;
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response.append(0x81);
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if (size > 125)
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{
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response.append(0x7E);
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response.append((size >> 8) & 0xFF);
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response.append(size & 0xFF);
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} else {
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response.append(size);
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}
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response.append(serializedReply.c_str(), serializedReply.length());
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_socket->write(response.data(), response.length());
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}
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}
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void JsonClientConnection::sendSuccessReply()
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{
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// create reply
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Json::Value reply;
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reply["success"] = true;
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// send reply
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sendMessage(reply);
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}
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void JsonClientConnection::sendErrorReply(const std::string &error)
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{
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// create reply
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Json::Value reply;
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reply["success"] = false;
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reply["error"] = error;
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|
|
|
// send reply
|
|
sendMessage(reply);
|
|
}
|
|
|
|
bool JsonClientConnection::checkJson(const Json::Value & message, const QString & schemaResource, std::string & errorMessage)
|
|
{
|
|
// read the json schema from the resource
|
|
QResource schemaData(schemaResource);
|
|
assert(schemaData.isValid());
|
|
Json::Reader jsonReader;
|
|
Json::Value schemaJson;
|
|
if (!jsonReader.parse(reinterpret_cast<const char *>(schemaData.data()), reinterpret_cast<const char *>(schemaData.data()) + schemaData.size(), schemaJson, false))
|
|
{
|
|
throw std::runtime_error("Schema error: " + jsonReader.getFormattedErrorMessages()) ;
|
|
}
|
|
|
|
// create schema checker
|
|
JsonSchemaChecker schema;
|
|
schema.setSchema(schemaJson);
|
|
|
|
// check the message
|
|
if (!schema.validate(message))
|
|
{
|
|
const std::list<std::string> & errors = schema.getMessages();
|
|
std::stringstream ss;
|
|
ss << "{";
|
|
foreach (const std::string & error, errors) {
|
|
ss << error << " ";
|
|
}
|
|
ss << "}";
|
|
errorMessage = ss.str();
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|