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#include "socket.h"
#include <filesystem>
#include <iostream>
namespace fs = std::filesystem;
using namespace std::string_literals;
std::mutex& Socket::getMutex()
{
return m_mutex;
}
FCGI_ID& Socket::fcgi_id()
{
return m_fcgi_id;
}
SocketFactory::SocketFactory()
: m_io_context()
{
}
std::shared_ptr<Socket> SocketFactory::create(const std::string& app_addr)
{
size_t pos { app_addr.find(':') };
if (pos != app_addr.npos) { // tcp socket: host:port
return std::make_shared<TCPSocket>(app_addr.substr(0, pos), app_addr.substr(pos + 1), m_io_context);
} else if (fs::is_socket(fs::path{app_addr})) { // Unix domain socket
return std::make_shared<FileSocket>(app_addr, m_io_context);
} else if (fs::is_regular_file(fs::path{app_addr})) { // Executable to start
// TODO
std::cerr << "FCGI Error: Executable FCGI not yet implemented." << std::endl;
} else {
std::cerr << "FCGI Error: Invalid app_addr type." << std::endl;
}
return {};
}
TCPSocket::TCPSocket(const std::string& host, const std::string& port, boost::asio::io_context& io_context)
: m_io_context(io_context)
, m_host(host)
, m_port(port)
, m_socket(io_context)
{
}
TCPSocket::~TCPSocket()
{
}
void TCPSocket::open()
{
boost::asio::ip::tcp::resolver resolver(m_io_context);
auto endpoints{resolver.resolve(m_host, m_port)};
try {
boost::asio::connect(m_socket, endpoints);
} catch(const std::exception& ex) {
std::cerr << "FCGI Error: Error on connecting to " << m_host << ":" << m_port << ": " << ex.what() << std::endl;
return;
}
boost::asio::socket_base::keep_alive keepAlive(true);
m_socket.set_option(keepAlive);
struct timeval tv;
tv.tv_sec = 0; // infinite
tv.tv_usec = 0;
if (setsockopt(m_socket.native_handle(), SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)))
std::cerr << "FCGI Error: SO_RCVTIMEO" << std::endl;
if (setsockopt(m_socket.native_handle(), SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)))
std::cerr << "FCGI Error: SO_SNDTIMEO" << std::endl;
int val{1};
if (setsockopt(m_socket.native_handle(), SOL_SOCKET, SO_KEEPALIVE, &val, sizeof(val)))
std::cerr << "FCGI Error: SO_KEEPALIVE" << std::endl;
}
bool TCPSocket::is_open()
{
return m_socket.is_open();
}
void TCPSocket::close()
{
m_socket.close();
}
size_t TCPSocket::write(const std::vector<char>& data)
{
try {
return m_socket.write_some(boost::asio::buffer(data));
} catch (const boost::system::system_error& ex) {
if (ex.code() == boost::asio::error::eof) {
throw fcgi_eof_error("EOF on write");
} else
throw std::runtime_error("FCGI Error: Unknown boost asio exception on write: "s + ex.what());
} catch (const std::exception& ex) {
throw std::runtime_error("FCGI Error: Unknown exception on write: "s + ex.what());
}
}
size_t TCPSocket::read(std::vector<char>& data)
{
try {
return m_socket.read_some(boost::asio::buffer(data));
} catch (const boost::system::system_error& ex) {
if (ex.code() == boost::asio::error::eof) {
throw fcgi_eof_error("EOF on read");
} else
throw std::runtime_error("FCGI Error: Unknown boost asio exception on read: "s + ex.what());
} catch (const std::exception& ex) {
throw std::runtime_error("FCGI Error: Unknown exception on read: "s + ex.what());
}
}
FileSocket::FileSocket(const std::string& app_addr, boost::asio::io_context& io_context)
: m_app_addr(app_addr)
, m_socket(io_context)
{
}
FileSocket::~FileSocket()
{
}
void FileSocket::open()
{
try {
boost::asio::local::stream_protocol::endpoint ep(m_app_addr);
m_socket.connect(ep);
} catch(const std::exception& ex) {
std::cerr << "FCGI Error: Error on connecting to " << m_app_addr << ": " << ex.what() << std::endl;
return;
}
}
bool FileSocket::is_open()
{
return m_socket.is_open();
}
void FileSocket::close()
{
m_socket.close();
}
size_t FileSocket::write(const std::vector<char>& data)
{
try {
return m_socket.write_some(boost::asio::buffer(data));
} catch (const boost::system::system_error& ex) {
if (ex.code() == boost::asio::error::eof) {
throw fcgi_eof_error("EOF on write");
} else
throw std::runtime_error("FCGI Error: Unknown boost asio exception on write: "s + ex.what());
} catch (const std::exception& ex) {
throw std::runtime_error("FCGI Error: Unknown exception on write: "s + ex.what());
}
}
size_t FileSocket::read(std::vector<char>& data)
{
try {
return m_socket.read_some(boost::asio::buffer(data));
} catch (const boost::system::system_error& ex) {
if (ex.code() == boost::asio::error::eof) {
throw fcgi_eof_error("EOF on read");
} else
throw std::runtime_error("FCGI Error: Unknown boost asio exception on read: "s + ex.what());
} catch (const std::exception& ex) {
throw std::runtime_error("FCGI Error: Unknown exception on read: "s + ex.what());
}
}
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