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#pragma once
#include "http_connection.hpp"
#include "logging.hpp"
#include "ssl_key_handler.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/ssl/stream.hpp>
#include <boost/asio/steady_timer.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, boost::asio::ip::tcp::acceptor&& acceptorIn,
std::shared_ptr<boost::asio::ssl::context> adaptorCtxIn,
std::shared_ptr<boost::asio::io_context> io) :
ioService(std::move(io)),
acceptor(std::move(acceptorIn)),
signals(*ioService, SIGINT, SIGTERM, SIGHUP), handler(handlerIn),
adaptorCtx(std::move(adaptorCtxIn))
{}
void updateDateStr()
{
time_t lastTimeT = time(nullptr);
tm myTm{};
gmtime_r(&lastTimeT, &myTm);
dateStr.resize(100);
size_t dateStrSz = strftime(dateStr.data(), dateStr.size() - 1,
"%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 dateStr;
};
BMCWEB_LOG_INFO("bmcweb server is running, local endpoint {}",
acceptor.local_endpoint().address().to_string());
startAsyncWaitForSignal();
doAccept();
}
void loadCertificate()
{
if constexpr (BMCWEB_INSECURE_DISABLE_SSL)
{
return;
}
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.string());
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));
}
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());
}
startAsyncWaitForSignal();
}
else
{
stop();
}
}
});
}
void stop()
{
ioService->stop();
}
void doAccept()
{
if (ioService == nullptr)
{
BMCWEB_LOG_CRITICAL("IoService was null");
return;
}
boost::asio::steady_timer timer(*ioService);
std::shared_ptr<Connection<Adaptor, Handler>> connection;
if constexpr (std::is_same<Adaptor,
boost::asio::ssl::stream<
boost::asio::ip::tcp::socket>>::value)
{
if (adaptorCtx == nullptr)
{
BMCWEB_LOG_CRITICAL(
"Asked to lauch TLS socket but no context available");
return;
}
connection = std::make_shared<Connection<Adaptor, Handler>>(
handler, std::move(timer), getCachedDateStr,
Adaptor(*ioService, *adaptorCtx));
}
else
{
connection = std::make_shared<Connection<Adaptor, Handler>>(
handler, std::move(timer), getCachedDateStr,
Adaptor(*ioService));
}
acceptor.async_accept(
boost::beast::get_lowest_layer(connection->socket()),
[this, connection](const boost::system::error_code& ec) {
if (!ec)
{
boost::asio::post(*ioService,
[connection] { connection->start(); });
}
doAccept();
});
}
private:
std::shared_ptr<boost::asio::io_context> ioService;
std::function<std::string()> getCachedDateStr;
boost::asio::ip::tcp::acceptor acceptor;
boost::asio::signal_set signals;
std::string dateStr;
Handler* handler;
std::shared_ptr<boost::asio::ssl::context> adaptorCtx;
};
} // namespace crow
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