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#pragma once
#include "app.hpp"
#include "async_resp.hpp"
#include <sys/socket.h>
#include <boost/asio/local/stream_protocol.hpp>
#include <boost/container/flat_set.hpp>
#include <websocket.hpp>
namespace crow
{
namespace obmc_console
{
// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
static std::unique_ptr<boost::asio::local::stream_protocol::socket> hostSocket;
// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
static std::array<char, 4096> outputBuffer;
// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
static std::string inputBuffer;
// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
static boost::container::flat_set<crow::websocket::Connection*> sessions;
// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
static bool doingWrite = false;
inline void doWrite()
{
if (doingWrite)
{
BMCWEB_LOG_DEBUG << "Already writing. Bailing out";
return;
}
if (inputBuffer.empty())
{
BMCWEB_LOG_DEBUG << "Outbuffer empty. Bailing out";
return;
}
if (!hostSocket)
{
BMCWEB_LOG_ERROR << "doWrite(): Socket closed.";
return;
}
doingWrite = true;
hostSocket->async_write_some(
boost::asio::buffer(inputBuffer.data(), inputBuffer.size()),
[](const boost::beast::error_code& ec, std::size_t bytesWritten) {
doingWrite = false;
inputBuffer.erase(0, bytesWritten);
if (ec == boost::asio::error::eof)
{
for (crow::websocket::Connection* session : sessions)
{
session->close("Error in reading to host port");
}
return;
}
if (ec)
{
BMCWEB_LOG_ERROR << "Error in host serial write " << ec;
return;
}
doWrite();
});
}
inline void doRead()
{
if (!hostSocket)
{
BMCWEB_LOG_ERROR << "doRead(): Socket closed.";
return;
}
BMCWEB_LOG_DEBUG << "Reading from socket";
hostSocket->async_read_some(
boost::asio::buffer(outputBuffer.data(), outputBuffer.size()),
[](const boost::system::error_code& ec, std::size_t bytesRead) {
BMCWEB_LOG_DEBUG << "read done. Read " << bytesRead << " bytes";
if (ec)
{
BMCWEB_LOG_ERROR << "Couldn't read from host serial port: " << ec;
for (crow::websocket::Connection* session : sessions)
{
session->close("Error in connecting to host port");
}
return;
}
std::string_view payload(outputBuffer.data(), bytesRead);
for (crow::websocket::Connection* session : sessions)
{
session->sendBinary(payload);
}
doRead();
});
}
inline void connectHandler(const boost::system::error_code& ec)
{
if (ec)
{
BMCWEB_LOG_ERROR << "Couldn't connect to host serial port: " << ec;
for (crow::websocket::Connection* session : sessions)
{
session->close("Error in connecting to host port");
}
return;
}
doWrite();
doRead();
}
inline void requestRoutes(App& app)
{
BMCWEB_ROUTE(app, "/console0")
.privileges({{"OpenBMCHostConsole"}})
.websocket()
.onopen(
[](crow::websocket::Connection& conn) {
BMCWEB_LOG_DEBUG << "Connection " << &conn << " opened";
sessions.insert(&conn);
if (hostSocket == nullptr)
{
const std::string consoleName("\0obmc-console", 13);
boost::asio::local::stream_protocol::endpoint ep(consoleName);
hostSocket =
std::make_unique<boost::asio::local::stream_protocol::socket>(
conn.getIoContext());
hostSocket->async_connect(ep, connectHandler);
}
})
.onclose([](crow::websocket::Connection& conn,
[[maybe_unused]] const std::string& reason) {
BMCWEB_LOG_INFO << "Closing websocket. Reason: " << reason;
sessions.erase(&conn);
if (sessions.empty())
{
hostSocket = nullptr;
inputBuffer.clear();
inputBuffer.shrink_to_fit();
}
})
.onmessage([]([[maybe_unused]] crow::websocket::Connection& conn,
const std::string& data, [[maybe_unused]] bool isBinary) {
inputBuffer += data;
doWrite();
});
}
} // namespace obmc_console
} // namespace crow
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