Implement sanitizer support via CMake (#822)

Fixes #302

src/web/DOSGuard.h

@@ -20,6 +20,8 @@
 #pragma once
 
 #include <util/config/Config.h>
+#include <util/log/Logger.h>
+#include <web/IntervalSweepHandler.h>
 #include <web/WhitelistHandler.h>
 
 #include <boost/asio.hpp>
@@ -253,66 +255,6 @@ private:
     }
 };
 
-/**
- * @brief Sweep handler using a steady_timer and boost::asio::io_context.
- */
-class IntervalSweepHandler
-{
-    std::chrono::milliseconds sweepInterval_;
-    std::reference_wrapper<boost::asio::io_context> ctx_;
-    boost::asio::steady_timer timer_;
-
-    BaseDOSGuard* dosGuard_ = nullptr;
-
-public:
-    /**
-     * @brief Construct a new interval-based sweep handler.
-     *
-     * @param config Clio config
-     * @param ctx The boost::asio::io_context
-     */
-    IntervalSweepHandler(util::Config const& config, boost::asio::io_context& ctx)
-        : sweepInterval_{std::max(1u, static_cast<uint32_t>(config.valueOr("dos_guard.sweep_interval", 1.0) * 1000.0))}
-        , ctx_{std::ref(ctx)}
-        , timer_{ctx.get_executor()}
-    {
-    }
-
-    ~IntervalSweepHandler()
-    {
-        timer_.cancel();
-    }
-
-    /**
-     * @brief This setup member function is called by @ref BasicDOSGuard during its initialization.
-     *
-     * @param guard Pointer to the dos guard
-     */
-    void
-    setup(BaseDOSGuard* guard)
-    {
-        assert(dosGuard_ == nullptr);
-        dosGuard_ = guard;
-        assert(dosGuard_ != nullptr);
-
-        createTimer();
-    }
-
-private:
-    void
-    createTimer()
-    {
-        timer_.expires_after(sweepInterval_);
-        timer_.async_wait([this](boost::system::error_code const& error) {
-            if (error == boost::asio::error::operation_aborted)
-                return;
-
-            dosGuard_->clear();
-            boost::asio::post(ctx_.get().get_executor(), [this] { createTimer(); });
-        });
-    }
-};
-
-using DOSGuard = BasicDOSGuard<web::WhitelistHandler, IntervalSweepHandler>;
+using DOSGuard = BasicDOSGuard<web::WhitelistHandler, web::IntervalSweepHandler>;
 
 }  // namespace web