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#pragma once
#include "http_connection.hpp"
#include "logging.hpp"
#include "timer_queue.hpp"
#include <boost/asio/ip/address.hpp>
#include <boost/asio/ip/tcp.hpp>
#include <boost/asio/signal_set.hpp>
#include <boost/asio/ssl/context.hpp>
#include <boost/asio/steady_timer.hpp>
#include <boost/beast/ssl/ssl_stream.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>
#include <ssl_key_handler.hpp>
#include <atomic>
#include <chrono>
#include <cstdint>
#include <filesystem>
#include <future>
#include <memory>
#include <utility>
#include <vector>
namespace crow
{
template <typename Handler, typename Adaptor = boost::asio::ip::tcp::socket>
class Server
{
public:
Server(Handler* handlerIn,
std::unique_ptr<boost::asio::ip::tcp::acceptor>&& acceptorIn,
std::shared_ptr<boost::asio::ssl::context> adaptorCtx,
std::shared_ptr<boost::asio::io_context> io =
std::make_shared<boost::asio::io_context>()) :
ioService(std::move(io)),
acceptor(std::move(acceptorIn)),
signals(*ioService, SIGINT, SIGTERM, SIGHUP), timer(*ioService),
handler(handlerIn), adaptorCtx(std::move(adaptorCtx))
{}
Server(Handler* handlerIn, const std::string& bindaddr, uint16_t port,
const std::shared_ptr<boost::asio::ssl::context>& adaptorCtx,
const std::shared_ptr<boost::asio::io_context>& io =
std::make_shared<boost::asio::io_context>()) :
Server(handlerIn,
std::make_unique<boost::asio::ip::tcp::acceptor>(
*io, boost::asio::ip::tcp::endpoint(
boost::asio::ip::make_address(bindaddr), port)),
adaptorCtx, io)
{}
Server(Handler* handlerIn, int existingSocket,
const std::shared_ptr<boost::asio::ssl::context>& adaptorCtx,
const std::shared_ptr<boost::asio::io_context>& io =
std::make_shared<boost::asio::io_context>()) :
Server(handlerIn,
std::make_unique<boost::asio::ip::tcp::acceptor>(
*io, boost::asio::ip::tcp::v6(), existingSocket),
adaptorCtx, io)
{}
void updateDateStr()
{
time_t lastTimeT = time(nullptr);
tm myTm{};
gmtime_r(&lastTimeT, &myTm);
dateStr.resize(100);
size_t dateStrSz =
strftime(&dateStr[0], 99, "%a, %d %b %Y %H:%M:%S GMT", &myTm);
dateStr.resize(dateStrSz);
}
void run()
{
loadCertificate();
updateDateStr();
getCachedDateStr = [this]() -> std::string {
static std::chrono::time_point<std::chrono::steady_clock>
lastDateUpdate = std::chrono::steady_clock::now();
if (std::chrono::steady_clock::now() - lastDateUpdate >=
std::chrono::seconds(10))
{
lastDateUpdate = std::chrono::steady_clock::now();
updateDateStr();
}
return this->dateStr;
};
timer.expires_after(std::chrono::seconds(1));
timerHandler = [this](const boost::system::error_code& ec) {
if (ec)
{
return;
}
timerQueue.process();
timer.expires_after(std::chrono::seconds(1));
timer.async_wait(timerHandler);
};
timer.async_wait(timerHandler);
BMCWEB_LOG_INFO << "bmcweb server is running, local endpoint "
<< acceptor->local_endpoint();
startAsyncWaitForSignal();
doAccept();
}
void loadCertificate()
{
#ifdef BMCWEB_ENABLE_SSL
namespace fs = std::filesystem;
// Cleanup older certificate file existing in the system
fs::path oldCert = "/home/root/server.pem";
if (fs::exists(oldCert))
{
fs::remove("/home/root/server.pem");
}
fs::path certPath = "/etc/ssl/certs/https/";
// if path does not exist create the path so that
// self signed certificate can be created in the
// path
if (!fs::exists(certPath))
{
fs::create_directories(certPath);
}
fs::path certFile = certPath / "server.pem";
BMCWEB_LOG_INFO << "Building SSL Context file=" << certFile;
std::string sslPemFile(certFile);
ensuressl::ensureOpensslKeyPresentAndValid(sslPemFile);
std::shared_ptr<boost::asio::ssl::context> sslContext =
ensuressl::getSslContext(sslPemFile);
adaptorCtx = sslContext;
handler->ssl(std::move(sslContext));
#endif
}
void startAsyncWaitForSignal()
{
signals.async_wait([this](const boost::system::error_code& ec,
int signalNo) {
if (ec)
{
BMCWEB_LOG_INFO << "Error in signal handler" << ec.message();
}
else
{
if (signalNo == SIGHUP)
{
BMCWEB_LOG_INFO << "Receivied reload signal";
loadCertificate();
boost::system::error_code ec2;
acceptor->cancel(ec2);
if (ec2)
{
BMCWEB_LOG_ERROR
<< "Error while canceling async operations:"
<< ec2.message();
}
this->startAsyncWaitForSignal();
}
else
{
stop();
}
}
});
}
void stop()
{
ioService->stop();
}
void doAccept()
{
std::optional<Adaptor> adaptorTemp;
if constexpr (std::is_same<Adaptor,
boost::beast::ssl_stream<
boost::asio::ip::tcp::socket>>::value)
{
adaptorTemp = Adaptor(*ioService, *adaptorCtx);
auto p = std::make_shared<Connection<Adaptor, Handler>>(
handler, getCachedDateStr, timerQueue,
std::move(adaptorTemp.value()));
acceptor->async_accept(p->socket().next_layer(),
[this, p](boost::system::error_code ec) {
if (!ec)
{
boost::asio::post(
*this->ioService,
[p] { p->start(); });
}
doAccept();
});
}
else
{
adaptorTemp = Adaptor(*ioService);
auto p = std::make_shared<Connection<Adaptor, Handler>>(
handler, getCachedDateStr, timerQueue,
std::move(adaptorTemp.value()));
acceptor->async_accept(
p->socket(), [this, p](boost::system::error_code ec) {
if (!ec)
{
boost::asio::post(*this->ioService,
[p] { p->start(); });
}
doAccept();
});
}
}
private:
std::shared_ptr<boost::asio::io_context> ioService;
detail::TimerQueue timerQueue;
std::function<std::string()> getCachedDateStr;
std::unique_ptr<boost::asio::ip::tcp::acceptor> acceptor;
boost::asio::signal_set signals;
boost::asio::steady_timer timer;
std::string dateStr;
Handler* handler;
std::function<void(const boost::system::error_code& ec)> timerHandler;
#ifdef BMCWEB_ENABLE_SSL
bool useSsl{false};
#endif
std::shared_ptr<boost::asio::ssl::context> adaptorCtx;
}; // namespace crow
} // namespace crow
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