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Protocol/Protocol.h

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+#ifndef PROTOCOL_H
+#define PROTOCOL_H
+
+#include "Util/Util.h"
+#include <string>
+#include <utility>
+
+
+namespace Protocol {
+
+class Protocol
+{
+public:
+	class State
+	{
+	public:
+		enum type
+		{
+			Connected,
+			Disconnected
+		};
+	};
+
+	typedef std::pair<State::type, std::string> Result;
+
+public:
+	explicit Protocol(const Util::Context& context);
+
+	Result OpenConnection(const std::string& address);
+	Result ProcessMessage(const std::string& message);
+
+private:
+	class InternalState
+	{
+	public:
+		enum type
+		{
+			None,
+			Connect,
+			Helo,
+			Auth_login_user,
+			Auth_login_pass,
+			Mail_from,
+			Rcpt_to,
+			Data,
+			Mime_boundary,
+			Image_data,
+			Disconnect
+		};
+	};
+
+private:
+	Result Answer(State::type state, std::string answer) const;
+	void AppendMessage(const std::string& message);
+
+private:
+	InternalState::type m_internalState;
+	std::string m_address;
+	std::string m_message;
+
+	const Util::Context& m_context;
+};
+
+} // namespace Protocol
+
+#endif // PROTOCOL_H