TmpMenu/src/gta/fidevice.hpp

#pragma once

#include "sysMemAllocator.hpp"
#include "pointers.hpp"

#include <array>

namespace rage
{
	struct fiFindData
	{
		char fileName[256];
		uint64_t fileSize;
		FILETIME lastWriteTime;
		DWORD fileAttributes;
	};

	struct ResourceFlags
	{
		// TODO: figure out which is physical and which is virtual
		uint32_t flag1;
		uint32_t flag2;
	};

	// since Payne, RAGE devices are thread-safe (might not apply to V?)
	// in V, RAGE devices use UTF-8
	class fiDevice
	{
	public:
		static inline fiDevice* GetDevice(const char* path, bool allowRoot)
		{
			return big::g_pointers->m_fidevice_get_device(path, allowRoot);
		}

		static bool MountGlobal(const char* mountPoint, fiDevice* device, bool allowRoot);

		static void Unmount(const char* rootPath);

		static void Unmount(fiDevice const& device);

	public:
		virtual ~fiDevice() = 0;

		virtual uint64_t Open(const char* fileName, bool readOnly) = 0;

		virtual uint64_t OpenBulk(const char* fileName, uint64_t* ptr) = 0;

		virtual uint64_t OpenBulkWrap(const char* fileName, uint64_t* ptr, void*) = 0;

		virtual uint64_t CreateLocal(const char* fileName) = 0;

		virtual uint64_t Create(const char* fileName) = 0;

		virtual uint32_t Read(uint64_t handle, void* buffer, uint32_t toRead) = 0;

		virtual uint32_t ReadBulk(uint64_t handle, uint64_t ptr, void* buffer, uint32_t toRead) = 0;

		virtual uint32_t WriteBulk(uint64_t, int, int, int, int) = 0;

		virtual uint32_t Write(uint64_t, void*, int) = 0;

		virtual uint32_t Seek(uint64_t handle, int32_t distance, uint32_t method) = 0;

		virtual uint64_t SeekLong(uint64_t handle, int64_t distance, uint32_t method) = 0;

		virtual int32_t Close(uint64_t handle) = 0;

		virtual int32_t CloseBulk(uint64_t handle) = 0;

		virtual int GetFileLength(uint64_t handle) = 0;

		virtual uint64_t GetFileLengthUInt64(uint64_t handle) = 0;

		// dummy!
		virtual int m_40(int) = 0;

		virtual bool RemoveFile(const char* file) = 0;
		virtual int RenameFile(const char* from, const char* to) = 0;
		virtual int CreateDirectory(const char* dir) = 0;

		virtual int RemoveDirectory(const char* dir) = 0;

		virtual void m_xx() = 0;

		virtual uint64_t GetFileLengthLong(const char* fileName) = 0;

		virtual uint64_t GetFileTime(const char* file) = 0;
		virtual bool SetFileTime(const char* file, FILETIME fileTime) = 0;

		virtual uint64_t FindFirst(const char* path, fiFindData* findData) = 0;
		virtual bool FindNext(uint64_t handle, fiFindData* findData) = 0;
		virtual int FindClose(uint64_t handle) = 0;

		virtual rage::fiDevice* GetUnkDevice() = 0;

		virtual void* m_xy(void*, int, void*) = 0;

		virtual bool Truncate(uint64_t handle) = 0;

		virtual uint32_t GetFileAttributes(const char* path) = 0;

		virtual bool m_xz() = 0;

		virtual bool SetFileAttributes(const char* file, uint32_t FileAttributes) = 0;

		virtual int m_yx() = 0;

		// read even if read() returns less than length
		virtual bool ReadFull(uint64_t handle, void* buffer, uint32_t length) = 0;

		virtual bool WriteFull(uint64_t handle, void* buffer, uint32_t length) = 0;

		virtual int32_t GetResourceVersion(const char* fileName, ResourceFlags* flags) = 0;

		virtual int32_t m_yy() = 0;

		virtual int32_t m_yz(void*) = 0;

		virtual int32_t m_zx(void*) = 0; // return 0x40000000

		virtual bool IsCollection() = 0;

		virtual bool m_addedIn1290() = 0;

		virtual fiDevice* GetCollection() = 0; // return this

		virtual bool m_ax() = 0;

		virtual int32_t GetCollectionId() = 0;

		virtual const char* GetName() = 0;
	};

	class fiDeviceImplemented : public fiDevice
	{
	protected:
		fiDeviceImplemented();

	public:
		virtual ~fiDeviceImplemented();

		virtual uint64_t Open(const char* fileName, bool readOnly);

		virtual uint64_t OpenBulk(const char* fileName, uint64_t* ptr);

		virtual uint64_t OpenBulkWrap(const char* fileName, uint64_t* ptr, void* a3);

		virtual uint64_t CreateLocal(const char* fileName);

		virtual uint64_t Create(const char* fileName);

		virtual uint32_t Read(uint64_t handle, void* buffer, uint32_t toRead);

		virtual uint32_t ReadBulk(uint64_t handle, uint64_t ptr, void* buffer, uint32_t toRead);

		virtual uint32_t WriteBulk(uint64_t, int, int, int, int);

		virtual uint32_t Write(uint64_t, void*, int);

		virtual uint32_t Seek(uint64_t handle, int32_t distance, uint32_t method);

		virtual uint64_t SeekLong(uint64_t handle, int64_t distance, uint32_t method);

		virtual int32_t Close(uint64_t handle);

		virtual int32_t CloseBulk(uint64_t handle);

		virtual int GetFileLength(uint64_t handle);

		virtual uint64_t GetFileLengthUInt64(uint64_t handle);

		// dummy!
		virtual int m_40(int);

		virtual bool RemoveFile(const char* file);
		virtual int RenameFile(const char* from, const char* to);
		virtual int CreateDirectory(const char* dir);

		virtual int RemoveDirectory(const char* dir);

		virtual void m_xx();

		virtual uint64_t GetFileLengthLong(const char* fileName);

		virtual uint64_t GetFileTime(const char* file);
		virtual bool SetFileTime(const char* file, FILETIME fileTime);

		virtual uint64_t FindFirst(const char* path, fiFindData* findData);
		virtual bool FindNext(uint64_t handle, fiFindData* findData);
		virtual int FindClose(uint64_t handle);

		virtual rage::fiDevice* GetUnkDevice();

		virtual void* m_xy(void* a1, int a2, void* a3);

		virtual bool Truncate(uint64_t handle);

		virtual uint32_t GetFileAttributes(const char* path);

		virtual bool m_xz();

		virtual bool SetFileAttributes(const char* file, uint32_t FileAttributes);

		virtual int m_yx();

		// read even if read() returns less than length
		virtual bool ReadFull(uint64_t handle, void* buffer, uint32_t length);

		virtual bool WriteFull(uint64_t handle, void* buffer, uint32_t length);

		virtual int32_t GetResourceVersion(const char* fileName, ResourceFlags* version);

		virtual int32_t m_yy();

		virtual int32_t m_yz(void*);

		virtual int32_t m_zx(void*); // return 0x40000000

		virtual bool IsCollection();

		virtual bool m_addedIn1290();

		virtual fiDevice* GetCollection(); // return this

		virtual bool m_ax();

		virtual int32_t GetCollectionId();

		virtual const char* GetName();
	};

	class fiDeviceRelative : public fiDeviceImplemented
	{
	private:
		char m_pad[272];
	public:
		fiDeviceRelative();

		// any RAGE path can be used; including root-relative paths
		void SetPath(const char* relativeTo, rage::fiDevice* baseDevice, bool allowRoot);

		// compatibility wrapper for NY code
		inline void SetPath(const char* relativeTo, bool allowRoot)
		{
			SetPath(relativeTo, nullptr, allowRoot);
		}

		// mounts the device in the device stack
		void Mount(const char* mountPoint);
	};

	class fiEncryptingDevice : public fiDeviceImplemented
	{
	private:
		void* m_keyState;
		void* m_0010;
		char m_buffer[4096];
		bool m_1018;
		alignas(int) char m_pad[64]; // unsure

	private:
		void* AllocKeyState(const uint8_t* key);

	public:
		fiEncryptingDevice(const std::array<uint8_t, 32>& key);

		void FreeKeyState();
	};

	class fiPackfile : public fiDeviceImplemented
	{
	private:
		char m_pad[368 + (0x650 - 0x590)];
	public:
		fiPackfile();

		// any RAGE path can be used; including root-relative paths
		bool OpenPackfile(const char* archive, bool bTrue, int type, intptr_t veryFalse);

		// mounts the device in the device stack
		bool Mount(const char* mountPoint);

		// closes the package file
		void ClosePackfile();
	};
}