Assorted network research (#176)

classes.cpp

@@ -33,6 +33,7 @@
 #include "enums/eExplosionTag.hpp"
 #include "enums/eHandlingType.hpp"
 #include "game_files/CGameConfig.hpp"
+#include "game_files/GameDataHash.hpp"
 #include "misc/CTunables.hpp"
 #include "misc/vfx/TimecycleKeyframeData.hpp"
 #include "netsync/CProjectBaseSyncDataNode.hpp"
@@ -113,6 +114,7 @@
 #include "network/ChatData.hpp"
 #include "network/CJoinRequestContext.hpp"
 #include "network/ClanData.hpp"
+#include "network/CMsgJoinRequest.hpp"
 #include "network/CMsgJoinResponse.hpp"
 #include "network/CMsgTextMessage.hpp"
 #include "network/CNetComplaintMgr.hpp"
@@ -122,11 +124,13 @@
 #include "network/MatchmakingAttributes.hpp"
 #include "network/MatchmakingId.hpp"
 #include "network/netObject.hpp"
+#include "network/netObjectIds.hpp"
 #include "network/netPeerAddress.hpp"
 #include "network/netPlayer.hpp"
 #include "network/netPlayerMgrBase.hpp"
 #include "network/netTime.hpp"
 #include "network/Network.hpp"
+#include "network/P2pSecurity.hpp"
 #include "network/RemoteGamerInfoMsg.hpp"
 #include "network/snConnectToPeerTask.hpp"
 #include "network/snSession.hpp"

game_files/GameDataHash.hpp

@@ -0,0 +1,13 @@
+#pragma once
+#include "security/ObfVar.hpp"
+#include <array>
+
+#pragma pack(push, 8)
+class GameDataHash
+{
+public:
+	bool m_is_japanese_version;
+	std::array<rage::Obf32, 15> m_data;
+};
+static_assert(sizeof(GameDataHash) == 0xF4);
+#pragma pack(pop)

network/CMsgJoinRequest.hpp

@@ -0,0 +1,25 @@
+#pragma once
+#include <cstdint>
+
+#include "game_files/GameDataHash.hpp"
+#include "CNetGamePlayerDataMsg.hpp"
+#include "rage/rlGamerHandle.hpp"
+
+#pragma pack(push, 8)
+class CMsgJoinRequest
+{
+public:
+	std::uint32_t m_version_number;
+	std::uint32_t m_flags;
+	std::uint32_t m_unk_zero;
+	std::uint32_t m_magic;
+	GameDataHash m_game_data_hash;
+	std::uint32_t m_dlc_hash;
+	std::uint32_t m_timeout_time;
+	std::uint32_t dword10C;
+	bool m_no_handle;
+	rage::rlGamerHandle m_gamer_handle;
+	CNetGamePlayerDataMsg m_player_data_msg;
+};
+static_assert(sizeof(CMsgJoinRequest) == 0x168);
+#pragma pack(pop)

network/CNetGamePlayerDataMsg.hpp

@@ -4,16 +4,16 @@
 
 class datBitBuffer;
 
-#pragma pack(push,8)
+#pragma pack(push, 8)
 namespace rage {
     class playerDataMsg
     {
     public:
-        virtual ~playerDataMsg() = 0;
-        virtual int GetBufferSize() = 0;
-        virtual void Log() = 0;
-        virtual bool Serialize(datBitBuffer* buffer) = 0;
-        virtual bool Deserialize(datBitBuffer* buffer) = 0;
+        virtual ~playerDataMsg() = default;
+        virtual int GetBufferSize() { return 0; };
+        virtual void Log() {};
+        virtual bool Serialize(datBitBuffer* buffer) { return true; };
+        virtual bool Deserialize(datBitBuffer* buffer) { return true; };
 
         uint32_t m_game_version; //0x0008
         uint32_t m_nat_type; //0x000C

network/P2pSecurity.hpp

@@ -0,0 +1,67 @@
+#pragma once
+#include "rage/rlGamerInfo.hpp"
+
+#pragma pack(push, 2)
+namespace rage
+{
+	class SecurityPeer
+	{
+	public:
+#pragma pack(push, 8)
+		struct Info
+		{
+			uint8_t platform;
+			rage::rlGamerHandle handle;
+			char name[16];
+		};
+#pragma pack(pop)
+
+		std::uint8_t gap0[80];
+		int m_security_id_2;
+		std::uint8_t gap54[52];
+		int m_time_initialized;
+		std::uint8_t gap8C[4];
+		int dword90;
+		int m_security_id;
+		int gap98;
+		std::uint8_t gap9C[4];
+		rage::netPeerAddress m_address;
+		rage::netPeerAddress m_real_address;
+		std::uint64_t qwordE0; // unk data from the bitbuffer
+		std::uint64_t qwordE8;
+		std::uint64_t qwordF0;
+		std::uint64_t m_peer_id;
+		rage::rlGamerHandle m_unverified_handle;
+		char m_dtls_cxn_type;
+		std::uint8_t gap111[3];
+		char m_timeouts[0x40];
+		std::uint8_t gap154[4];
+		char m_decryption_lock[0x28];
+		void* m_WolfSSL;
+		rage::SecurityPeer::Info m_info;
+		std::uint8_t gap1B0[48];
+		rage::netPeerAddress m_last_provided_address;
+		int m_last_provided_security_id;
+		std::uint8_t gap204[44];
+		char m_peer_query_stage;
+		std::uint8_t gap231[3];
+		int m_get_peer_address_status;
+		std::uint8_t gap238[8];
+		rage::netPeerAddress m_peer_query_result;
+		bool m_errored;
+		std::uint8_t m_dtls_cxn_establish_state;
+		char aaaa[2];
+		int m_error_code;
+		std::uint8_t gap268[96]; // error queue
+		std::uint8_t m_info_requests;
+		std::uint8_t m_failed_decryption_attempts;
+		std::uint8_t gap2CA[6];
+		int m_certificate_verify_error_code;
+		int m_certificate_verify_status;
+		std::uint8_t gap2D8[8];
+		char m_flags;
+		std::uint8_t gap2E1[761];
+	};
+	static_assert(sizeof(rage::SecurityPeer) == 0x5DA);
+}
+#pragma pack(pop)

network/netConnection.hpp

@@ -54,38 +54,59 @@ namespace rage
 		uint64_t m_count;
 	};
 
+#pragma pack(push, 8)
+	class netEvent
+	{
+	public:
+		enum class Type
+		{
+			ConnectionRequested = 0, // seems to be identical to rage::netConnection::InFrame
+			ConnectionError = 2,
+			ConnectionClosed = 3,
+			FrameReceived = 4, // rage::netConnection::InFrame
+			BandwidthExceeded = 6,
+			OutOfMemory = 7
+		};
+
+		virtual ~netEvent() = default;
+
+		virtual void destroy() = 0;
+		virtual Type get_event_type() = 0;
+		virtual uint32_t _0x18() = 0;
+
+		std::uint32_t m_timestamp;             // 0x0008
+		char pad_0008[52];                     // 0x000C
+		std::uint32_t m_msg_id;                // 0x0040
+		std::uint32_t m_connection_identifier; // 0x0044
+		rage::netEvent* m_this;                // 0x0048
+		uint32_t m_peer_id;                    // 0x0050
+	};
+	static_assert(sizeof(rage::netEvent) == 0x58);
+
+	class netEventConnectionError : public rage::netEvent
+	{
+	public:
+		std::uint64_t m_unk;  // 0x0058 (always 2)
+		char m_data[0x80];    // 0x0060
+		std::uint32_t m_size; // 0x00E0
+	};
+	static_assert(sizeof(rage::netEventConnectionError) == 0xE8);
+#pragma pack(pop)
+
 	class netConnection
 	{
 	public:
-		class InFrame
+#pragma pack(push, 8)
+		class InFrame : public rage::netEvent
 		{
 		public:
-			enum class EventType
-			{
-				ConnectionClosed = 3,
-				FrameReceived = 4,
-				BandwidthExceeded = 6,
-				OutOfMemory = 7
-			};
-
-			virtual ~InFrame() = default;
-
-			virtual void destroy() = 0;
-			virtual EventType get_event_type() = 0;
-			virtual uint32_t _0x18() = 0;
-
-			uint32_t m_timestamp;             //0x0008
-			char pad_0008[52];                //0x000C
-			uint32_t m_msg_id;                //0x0040
-			uint32_t m_connection_identifier; //0x0044
-			InFrame* m_this;                  //0x0048
-			uint32_t m_peer_id;               //0x0050
-			char pad_0050[44];                //0x0058
-			uint32_t m_length;                //0x0080
-			char pad_007C[4];                 //0x0084
-			void* m_data;                     //0x0088
+			alignas(8) int m_security_id;        // 0x0058
+			rage::netPeerAddress m_peer_address; // 0x0060
+			std::uint32_t m_length;              // 0x0080
+			void* m_data;                        // 0x0088
 		};
 		static_assert(sizeof(rage::netConnection::InFrame) == 0x90);
+#pragma pack(pop)
 
 		char gap0[8];
 		rage::netConnectionPeer* m_connection_peer;

network/netObject.hpp

@@ -4,6 +4,7 @@
 #include "../netsync/netSyncTree.hpp"
 #include "../base/atRTTI.hpp"
 
+#pragma pack(push, 4)
 class CObject;
 namespace rage
 {
@@ -20,6 +21,8 @@ namespace rage
         bool m_wants_to_delete; //0x004D
         char pad_004E[1]; //0x004E
         bool m_should_not_be_delete; //0x004F
+        char pad_0050[0x38]; //0x0050
+        int m_ownership_token; //0x0088
 
         DEFINE_RAGE_RTTI(rage::netObject)
 
@@ -129,5 +132,6 @@ namespace rage
         virtual void m_320() = 0;
         virtual void UpdatePendingVisibilityChanges() = 0;
     }; //Size: 0x0050
-    static_assert(sizeof(netObject) == 0x50);
+    static_assert(sizeof(netObject) == 0x8C); // incorrect, but will do for now
 }
+#pragma pack(pop)

network/netObjectIds.hpp

@@ -0,0 +1,62 @@
+#pragma once
+#include <cstdint>
+
+#pragma pack(push, 4)
+namespace rage
+{
+	class netObjectIds
+	{
+	public:
+		char gap0[41];
+		char byte29;
+		int m_local_player_id;
+		int m_object_id_response_pending_players;
+		int m_last_object_id_response_time;
+		char gap38[4];
+		uint16_t m_usable_object_ids[8000];
+		int m_next_usable_object_id_write_slot;
+		int m_next_usable_object_id_read_slot;
+		int m_usable_object_id_count;
+
+		inline bool is_object_id_usable(std::uint16_t id)
+		{
+			if (m_usable_object_id_count <= 0)
+				return false;
+
+			int count = 0;
+			for (int i = m_next_usable_object_id_read_slot + 1; m_usable_object_ids[i % 8000] != id; i++)
+				if (++count > m_usable_object_id_count)
+					return false;
+
+			return true;
+		}
+
+		std::uint16_t get_usable_object_id()
+		{
+			int slot = ++m_next_usable_object_id_read_slot;
+			m_usable_object_id_count--;
+			if (slot == 8000)
+				slot = 0;
+			m_next_usable_object_id_read_slot = slot;
+			return m_usable_object_ids[slot];
+		}
+
+		// this operation is fundamentally unsupported by the data structure the IDs are stored in, unforeseen problems may occur
+		void remove_object_id(std::uint16_t id)
+		{
+			if (m_usable_object_id_count < 2)
+				return; // we need at least 2 items
+
+			int count = 0;
+			int i;
+			for (i = m_next_usable_object_id_read_slot + 1; m_usable_object_ids[i % 8000] != id; i++)
+				if (++count > m_usable_object_id_count)
+					return;
+
+			auto new_id = get_usable_object_id();
+			if (new_id != id)
+				m_usable_object_ids[i % 8000] = new_id;
+		}
+	};
+}
+#pragma pack(pop)

network/netPeerAddress.hpp

@@ -14,7 +14,7 @@ static_assert(sizeof(netAddress) == 0x04);
 
 namespace rage
 {
-#pragma pack(push, 4)
+#pragma pack(push, 8)
 	class netPeerAddress
 	{
 	public:

network/snConnectToPeerTask.hpp

@@ -1,21 +1,26 @@
-#pragma once
-#include <cstdint>
-
-namespace rage
-{
-	class snConnectToPeerTaskData
-	{
-	public:
-		int m_unk;
-		int m_reason;
-		uint64_t m_session_token;
-	};
-
-	class snConnectToPeerTaskResult
-	{
-	public:
-		char pad[0x10]{};
-		int m_peer_id;
-		char pad2[0x400]{};
-	};
+#pragma once
+#include <cstdint>
+
+namespace rage
+{
+#pragma pack(push, 8)
+	class snConnectToPeerTaskData
+	{
+	public:
+		std::uint8_t m_host_flag;
+		std::uint8_t m_connect_reason;
+		std::uint64_t m_session_token;
+		std::uint8_t m_flag2;
+		std::uint8_t m_flag3;
+	};
+	static_assert(sizeof(rage::snConnectToPeerTaskData) == 0x18);
+#pragma pack(pop)
+
+	class snConnectToPeerTaskResult
+	{
+	public:
+		char pad[0x10]{};
+		int m_peer_id;
+		char pad2[0x400]{};
+	};
 }