http/app.hpp

#ifndef THIRD_PARTY_GBMCWEB_HTTP_APP_H_
#define THIRD_PARTY_GBMCWEB_HTTP_APP_H_

#include "http_request.hpp"
#include "async_resp.hpp"
#include "privileges.hpp"
#include "app_interface.h"
#include "smart_router.h"
// #include "utility.hpp"
#include "boost/asio/io_context.hpp"  // NOLINT
#include "boost/asio/ip/tcp.hpp"  // NOLINT
#include "routing.hpp"
#ifdef BMCWEB_ENABLE_SSL
#include "boost/asio/ssl/context.hpp"  // NOLINT
#include "boost/beast/ssl/ssl_stream.hpp"  // NOLINT
#endif

#include <array>
#include <cstddef>
#include <cstdint>
#include <memory>
#include <string>
#include <string_view>
#include <type_traits>
#include <utility>
#include <vector>

// NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
#define BMCWEB_ROUTE(app, url) \
  app.template route<crow::black_magic::getParameterTag(url)>(url)

#ifdef BMCWEB_ENABLE_SSL
using ssl_context_t = boost::asio::ssl::context;
using ssl_socket_t = boost::beast::ssl_stream<boost::asio::ip::tcp::socket>;
#else
using socket_t = boost::asio::ip::tcp::socket;
#endif

namespace crow {

class App {
 public:
  explicit App(bool allowSessionEmpty,
               std::shared_ptr<boost::asio::io_context> ioIn =
                   std::make_shared<boost::asio::io_context>(),
               AppInterface* tlbmc_app = nullptr)
      : io(std::move(ioIn)), router(allowSessionEmpty, tlbmc_app) {}
  ~App() { this->stop(); }

  App(const App&) = delete;
  App(App&&) = delete;
  App& operator=(const App&) = delete;
  App& operator=(const App&&) = delete;

  template <typename Adaptor>
  void handleUpgrade(Request& req,
                     const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
                     Adaptor&& adaptor) {
    router.HandleUpgrade(req, asyncResp, std::forward<Adaptor>(adaptor));
  }

  void handle(Request& req,
              const std::shared_ptr<bmcweb::AsyncResp>& asyncResp);

  DynamicRule& routeDynamic(std::string&& rule) {
    return router.NewRuleDynamic(std::move(rule));
  }

  template <uint64_t Tag>
  auto& route(std::string&& rule) {
    return router.NewRuleTagged<Tag>(std::move(rule));
  }

  App& socket(int existingSocket) {
    socketFd = existingSocket;
    return *this;
  }

  App& port(std::uint16_t port) {
    portUint = port;
    return *this;
  }

  App& bindaddr(std::string bindaddr) {
    bindaddrStr = std::move(bindaddr);
    return *this;
  }

  void validate() { router.Validate(); }

  void run();

  void stop() { io->stop(); }

  void debugPrint();

  std::vector<const std::string*> getRoutes() {
    const std::string root;
    return router.GetRoutes(root);
  }
  std::vector<const std::string*> getRoutes(const std::string& parent) {
    return router.GetRoutes(parent);
  }

  template <uint64_t Tag, typename Func, size_t N>
  void addHandler(std::string_view url, boost::beast::http::verb verb,
                  const std::array<redfish::Privileges, N>& p, Func&& func) {
    router.NewRuleTagged<Tag>(url).methods(verb).privileges(p)(func);
  }

  template <uint64_t Tag, typename Func>
  void replaceHandler(std::string_view url, boost::beast::http::verb verb,
                      Func&& func) {
    router.ReplaceHandler<Tag>(url, verb, func);
  }

  template <uint64_t Tag>
  void removeHandler(std::string_view url, boost::beast::http::verb verb) {
    router.RemoveHandler<Tag>(url, verb);
  }

  template <uint64_t Tag, typename Func>
  void appendHandler(std::string_view url, boost::beast::http::verb verb,
                     Func&& func) {
    router.AppendHandler<Tag>(url, verb, func);
  }

#ifdef BMCWEB_ENABLE_SSL
  App& ssl(std::shared_ptr<boost::asio::ssl::context>&& ctx) {
    sslContext = std::move(ctx);
    BMCWEB_LOG_INFO << "app::ssl context use_count=" << sslContext.use_count();
    return *this;
  }

  std::shared_ptr<ssl_context_t> sslContext = nullptr;

#else
  template <typename T>
  App& ssl(T&& /*unused*/) {
    // We can't call .ssl() member function unless BMCWEB_ENABLE_SSL is
    // defined.
    static_assert(
        // make static_assert dependent to T; always false
        std::is_base_of<T, void>::value,
        "Define BMCWEB_ENABLE_SSL to enable ssl support.");
    return *this;
  }
#endif

 private:
  std::shared_ptr<boost::asio::io_context> io;
#ifdef BMCWEB_ENABLE_SSL
  uint16_t portUint = 443;
#else
  uint16_t portUint = 80;  // NOLINT
#endif
  std::string bindaddrStr = "0.0.0.0";  // NOLINT
  int socketFd = -1;                    // NOLINT
  SmartRouter router;                   // NOLINT
};
}  // namespace crow
using App = crow::App;

#endif  // THIRD_PARTY_GBMCWEB_HTTP_APP_H_