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FlowAsio.h
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FlowAsio.h
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#pragma once
#include <boost/asio.hpp>
#include <boost/asio/ssl.hpp>
#include "Response.h"
#include <vector>
#include "Socket.h"
#include <FlowUtils/FlowLog.h>
#include <FlowUtils/Semaphore.h>
#include "Request.h"
namespace FlowAsio {
inline std::string readStringSSL(Socket &socket) {
std::stringstream allDataBuffer;
boost::system::error_code error;
std::array<char, 8192> caBuf;
do {
size_t readLength = boost::asio::read(*socket.GetSSLSocket(),
boost::asio::buffer(caBuf),
boost::asio::transfer_at_least(1), error);
allDataBuffer.write(caBuf.data(), readLength);
} while (error != boost::asio::error::eof && socket.GetSSLSocket()->lowest_layer().available());
return allDataBuffer.str();
}
inline std::string readString(Socket &socket) {
std::stringstream allDataBuffer;
boost::system::error_code error;
std::array<char, 8192> caBuf;
do {
size_t readLength = boost::asio::read(*socket.GetSocket(),
boost::asio::buffer(caBuf),
boost::asio::transfer_at_least(1), error);
allDataBuffer.write(caBuf.data(), readLength);
} while (error != boost::asio::error::eof && socket.GetSocket()->lowest_layer().available());
return allDataBuffer.str();
}
inline std::vector<unsigned char> readBytesSSL(Socket &socket) {
std::vector<unsigned char> allDataBuffer;
boost::system::error_code error;
std::array<char, 8192> caBuf;
do {
size_t readLength = boost::asio::read(*socket.GetSSLSocket(),
boost::asio::buffer(caBuf),
boost::asio::transfer_at_least(1), error);
allDataBuffer.insert(allDataBuffer.end(), caBuf.begin(), caBuf.begin() + readLength);
} while (error != boost::asio::error::eof && socket.GetSSLSocket()->lowest_layer().available());
return allDataBuffer;
}
inline std::vector<unsigned char> readBytesNoSSL(Socket &socket) {
std::vector<unsigned char> allDataBuffer;
boost::system::error_code error;
std::array<char, 8192> caBuf;
do {
size_t readLength = boost::asio::read(*socket.GetSocket(),
boost::asio::buffer(caBuf),
boost::asio::transfer_at_least(1), error);
allDataBuffer.insert(allDataBuffer.end(), caBuf.begin(), caBuf.begin() + readLength);
} while (error != boost::asio::error::eof && socket.GetSocket()->lowest_layer().available());
return allDataBuffer;
}
inline std::string read(Socket &socket) {
if (socket.IsSSL())
return readStringSSL(socket);
else
return readString(socket);
}
inline std::vector<unsigned char> readBytes(Socket &socket) {
if (socket.IsSSL())
return readBytesSSL(socket);
else
return readBytesNoSSL(socket);
}
inline bool writeStringSSL(Socket &socket, const std::string &data) {
try {
boost::asio::write(*socket.GetSSLSocket(), boost::asio::buffer(data));
} catch (std::exception &ex) {
LOG_WARNING << ex.what();
return false;
}
return true;
}
inline bool writeString(Socket &socket, const std::string &data) {
try {
boost::asio::write(*socket.GetSocket(), boost::asio::buffer(data));
} catch (std::exception &ex) {
LOG_WARNING << ex.what();
return false;
}
return true;
}
inline bool write(Socket &socket, const std::string &data) {
if (socket.IsSSL())
return writeStringSSL(socket, data);
else
return writeString(socket, data);
}
inline bool asioWrite(boost::asio::ip::tcp::socket &soc, const std::string &data) {
try {
boost::asio::write(soc, boost::asio::buffer(data));
} catch (std::exception &ex) {
LOG_WARNING << ex.what();
return false;
}
return true;
}
inline bool write(Socket &socket, const unsigned char *data, const size_t &size) {
try {
if (socket.IsSSL())
boost::asio::write(*socket.GetSSLSocket(), boost::asio::buffer(data, size));
else
boost::asio::write(*socket.GetSocket(), boost::asio::buffer(data, size));
} catch (std::exception &ex) {
LOG_WARNING << ex.what();
return false;
}
return true;
}
inline bool write(Socket &socket, const std::vector<unsigned char> &data) {
return write(socket, data.data(), data.size());
}
inline bool sendMultiStatus(Socket &socket, Response &res) {
res.StatusCode = HttpStatusCode::MultiStatus;
return write(socket, res.ToString());
}
inline bool sendOk(Socket &socket) {
Response res;
return write(socket, res.ToString());
}
inline bool sendOk(Socket &socket, Response &res) {
res.StatusCode = HttpStatusCode::OK;
return write(socket, res.ToString());
}
inline bool send(Socket &socket, const Response &res) {
return write(socket, res.ToString());
}
inline std::size_t readToVector(Socket &socket, std::vector<unsigned char> &buffer,
boost::system::error_code &error,
std::size_t bufferSize) {
try {
buffer.clear();
buffer.resize(bufferSize);
if (socket.IsSSL())
return boost::asio::read(*socket.GetSSLSocket(),
boost::asio::buffer(buffer),
boost::asio::transfer_at_least(1),
error);
else
return boost::asio::read(*socket.GetSocket(),
boost::asio::buffer(buffer),
boost::asio::transfer_at_least(1),
error);
} catch (std::exception ex) {
LOG_WARNING << ex.what();
}
return 0;
}
inline void redirect(const std::string &string, Socket &socket) {
Response response(socket.IsSSL());
response.StatusCode = HttpStatusCode::MovedPermanently;
response.emplace("Location", string);
write(socket, response.ToString());
}
inline void sendFound(Response &response, Socket &socket, const std::string &location) {
response.StatusCode = HttpStatusCode::Found;
response.emplace("Location", location);
write(socket, response.ToString());
}
inline void sendUnauthorized(Socket &socket) {
Response response(socket.IsSSL());
response.StatusCode = HttpStatusCode::Unauthorized;
write(socket, response.ToString());
}
inline bool sendNotFound(Socket &socket) {
Response response(socket.IsSSL());
response.StatusCode = HttpStatusCode::NotFound;
return write(socket, response.ToString());
}
inline bool sendBadRequest(Socket &socket) {
Response response;
response.StatusCode = HttpStatusCode::BadRequest;
return write(socket, response.ToString());
}
inline bool sendBadRequest(Socket &socket, Response &response) {
response.StatusCode = HttpStatusCode::BadRequest;
return write(socket, response.ToString());
}
inline bool sendMethodNotAllowed(Socket &socket) {
Response response(socket.IsSSL());
response.StatusCode = HttpStatusCode::MethodNotAllowed;
return write(socket, response.ToString());
}
inline bool
sendFile(const std::string &fileName,
const std::string &path,
const std::string &mime,
Request &request, Response &response, Socket &socket,
bool isDownload = true) {
const static size_t BUFFER_SIZE = 128 * 1024;
if (isDownload)
response["Content-Disposition"] = "attachment; filename=" + fileName;
response.ContentType = mime;
response.SetFile(path);
//Range
response["Accept-Ranges"] = "bytes";
if (request.count("Range")) {
if (!response.Range(request.at("Range"))) {
request.CloseConnection();
FlowAsio::sendBadRequest(socket);
return true;
}
}
unsigned char data1[BUFFER_SIZE];
unsigned char data2[BUFFER_SIZE];
unsigned char *data = data1;
bool dataSwitch = false;
Semaphore m;
const std::string header = response.Header();
m.lock();
std::thread([&] {
FlowAsio::write(socket, header);
m.unlock();
}).detach();
size_t readBytes = 0;
bool hasError = false;
size_t lock_count = 0;
while ((readBytes = response.ReadData(data, BUFFER_SIZE)) && !hasError) {
m.lock();
std::thread([&, data, readBytes] {
if (!FlowAsio::write(socket, data, readBytes)) {
hasError = true;
request.CloseConnection();
m.unlock();
return false;
}
m.unlock();
return true;
}).detach();
data = dataSwitch ? data1 : data2;
dataSwitch = !dataSwitch;
}
m.lock();
request.CloseConnection();
return true;
}
inline Request readRequest(Socket &socket) {
Request request;
while (request.ParserState <= HttpParserState::HEADER_END && request.ParserState != HttpParserState::END &&
request.ParserState != HttpParserState::BAD_REQUEST) {
auto req = FlowAsio::readBytes(socket);
// LOG_DEBUG << "Request:" << std::endl << std::string(req.begin(), req.end());
request << req;
}
return request;
}
inline Socket moveSocketToSSLSocket(boost::asio::ip::tcp::socket& socket, boost::asio::ssl::context &ssl_context) {
Socket rtn(std::move(socket));
boost::system::error_code error;
rtn.SetSSL(ssl_context);
rtn.GetSSLSocket()->handshake(boost::asio::ssl::stream_base::server, error);
if (error) {
LOG_WARNING << "Bad Request";
}
return rtn;
}
inline Socket moveSocketToSocket(boost::asio::ip::tcp::socket& socket) {
Socket rtn(std::move(socket));
return rtn;
}
inline std::string getBody(Request& request, Socket& socket){
while (request.ParserState >= HttpParserState::HEADER_END && request.ParserState != HttpParserState::END &&
request.ParserState != HttpParserState::BAD_REQUEST) {
auto req = FlowAsio::readBytes(socket);
// LOG_DEBUG << "Request:" << std::endl << std::string(req.begin(), req.end());
request << req;
}
if(request.GetBody().length() != std::stoull(request.ContentLength())){
LOG_WARNING << "Bad Request after reading all!";
request.ParserState = HttpParserState::BAD_REQUEST;
}
return request.GetBody();
}
}