Servertalk implementation wip, added optional support for pub-key authenticated encryption (via libsodium), not backwards compatible.

common/net/servertalk_client_connection.h

@@ -0,0 +1,53 @@
+#pragma once
+
+#include "tcp_connection.h"
+#include "../event/timer.h"
+#include "servertalk_common.h"
+#include "packet.h"
+#include <sodium.h>
+
+namespace EQ
+{
+	namespace Net
+	{
+		class ServertalkClient
+		{
+		public:
+			ServertalkClient(const std::string &addr, int port, bool ipv6, const std::string &identifier, const std::string &credentials);
+			~ServertalkClient();
+
+		private:
+			void Connect();
+			void ProcessData(EQ::Net::TCPConnection *c, const unsigned char *data, size_t length);
+			void SendHello();
+			void InternalSend(ServertalkPacketType type, EQ::Net::Packet &p);
+			void ProcessReadBuffer();
+			void ProcessHello(EQ::Net::Packet &p);
+			void ProcessMessage(EQ::Net::Packet &p);
+			void SendHandshake();
+
+			std::unique_ptr<EQ::Timer> m_timer;
+
+			std::string m_addr;
+			std::string m_identifier;
+			std::string m_credentials;
+			bool m_connecting;
+			int m_port;
+			bool m_ipv6;
+			bool m_encrypted;
+			std::shared_ptr<EQ::Net::TCPConnection> m_connection;
+			std::vector<char> m_buffer;
+
+#ifdef ENABLE_SECURITY
+			unsigned char m_public_key_ours[crypto_box_PUBLICKEYBYTES];
+			unsigned char m_private_key_ours[crypto_box_SECRETKEYBYTES];
+			unsigned char m_nonce_ours[crypto_box_NONCEBYTES];
+
+			unsigned char m_public_key_theirs[crypto_box_PUBLICKEYBYTES];
+			unsigned char m_nonce_theirs[crypto_box_NONCEBYTES];
+
+			unsigned char m_shared_key[crypto_box_BEFORENMBYTES];
+#endif
+		};
+	}
+}